These are representative sample records from Science.gov related to your search topic.
For comprehensive and current results, perform a real-time search at Science.gov.
1

EM International. Volume 1  

SciTech Connect

It is the intent of EM International to describe the Office of Environmental Restoration and Waste Management`s (EM`s) various roles and responsibilities within the international community. Cooperative agreements and programs, descriptions of projects and technologies, and synopses of visits to international sites are all highlighted in this semiannual journal. Focus on EM programs in this issue is on international collaboration in vitrification projects. Technology highlights covers: in situ sealing for contaminated sites; and remote sensors for toxic pollutants. Section on profiles of countries includes: Arctic contamination by the former Soviet Union, and EM activities with Germany--cooperative arrangements.

Not Available

1993-07-01

2

Environmental Media Services (EMS)  

NSDL National Science Digital Library

Environmental Media Services (EMS) is a nonprofit communications clearinghouse committed to the expansion of media coverage on critical environmental and public health issues. True to their mission, EMS staff "build relationships with top scientists, physicians, and other experts to bring journalists the latest and most credible information." EMS's modest homepage is free of clutter but full of content. While several sections are under construction and updates (currently) appear irregular, a series of available articles provides useful summaries of important environmental news issues over the past six months. Current articles include "The impacts of global warming on the oceans" and "Cool companies," among others.

3

OPTIMIZAC ~ AO EM REDES  

E-print Network

OPTIMIZAC¸ ~ AO EM REDES UMA VIS ~ AO GLOBAL Deolinda Dias Rasteiro, Jose Luis Santos, Marta Braz; Optimiza¸c~ao em Redes ­ Uma Vis~ao Global N = fv 1 ; : : : ; v n g j f1; : : : ; ng ­ conjunto de n'os (v est~ao associados par??ametros Exemplo: `j 'i 1 `j 'i 2 `j 'i 3 `j 'i 4 \\Gamma \\Gamma \\Gamma \\Gamma

Pascoal, Marta Margarida Braz

4

*Bacharel em Turismo.  

E-print Network

algumas questes que ainda fazem parte das discusses sobre as necessrias reformas estatais originadas no perodo da transio democrtica e que se estendem at os dias atuais. Discusses essas que incluem tambm as transformaes ocorridas na sociedade e que colocam as propostas de reformas para alm da estrutura do Estado. neste perodo que se pronuncia o esgotamento do planejamento centralizado como instrumento de conduo poltica, no s em funo dos problemas intrnsecos estrutura estatal, mas principalmente por este no conseguir planejar a sociedade em virtude da nova complexidade social. Alis, complexidade a noo predominante nesse contexto em que se abrem novas propostas de planejamento, definidas atravs da co-responsabilidade entre os representantes do Estado e da

Ana Valria Endres; Palavras-chave Turismo; Estado Planejamento; Planejamento Turstico

5

EM Radiation Program  

NSDL National Science Digital Library

The EM Radiation program displays the electric field vectors (in the x-y plane) and magnetic field contours (for the field in the z direction) calculated from the Lienard-Wiechert potentials for a charged particle. The default scenario shows the resulting radiation from a charged particle in simple harmonic motion. Additional particle trajectories can be specified using the Display | Switch GUI menu item. EM Radiation is an Open Source Physics program written for the teaching of electromagnetism. It is distributed as a ready-to-run (compiled) Java archive. Double clicking the em_radiation.jar file will run the program if Java is installed. Other electromagnetism programs are also available. They can be found by searching ComPADRE for Open Source Physics, OSP, or electromagnetism.

Christian, Wolfgang

2008-05-20

6

The EM Earthquake Precursor  

NASA Astrophysics Data System (ADS)

Many attempts have been made to determine a sound forecasting method regarding earthquakes and warn the public in turn. Presently, the animal kingdom leads the precursor list alluding to a transmission related source. By applying the animal-based model to an electromagnetic (EM) wave model, various hypotheses were formed, but the most interesting one required the use of a magnetometer with a differing design and geometry. To date, numerous, high-end magnetometers have been in use in close proximity to fault zones for potential earthquake forecasting; however, something is still amiss. The problem still resides with what exactly is forecastable and the investigating direction of EM. After the 1989 Loma Prieta Earthquake, American earthquake investigators predetermined magnetometer use and a minimum earthquake magnitude necessary for EM detection. This action was set in motion, due to the extensive damage incurred and public outrage concerning earthquake forecasting; however, the magnetometers employed, grounded or buried, are completely subject to static and electric fields and have yet to correlate to an identifiable precursor. Secondly, there is neither a networked array for finding any epicentral locations, nor have there been any attempts to find even one. This methodology needs dismissal, because it is overly complicated, subject to continuous change, and provides no response time. As for the minimum magnitude threshold, which was set at M5, this is simply higher than what modern technological advances have gained. Detection can now be achieved at approximately M1, which greatly improves forecasting chances. A propagating precursor has now been detected in both the field and laboratory. Field antenna testing conducted outside the NE Texas town of Timpson in February, 2013, detected three strong EM sources along with numerous weaker signals. The antenna had mobility, and observations were noted for recurrence, duration, and frequency response. Next, two directional techniques were employed, resulting in three mapped, potential epicenters. The remaining, weaker signals presented similar directionality results to more epicentral locations. In addition, the directional results of the Timpson field tests lead to the design and construction of a third prototype antenna. In a laboratory setting, experiments were created to fail igneous rock types within a custom-designed Faraday Cage. An antenna emplaced within the cage detected EM emissions, which were both reproducible and distinct, and the laboratory results paralleled field results. With a viable system and continuous monitoring, a fracture cycle could be established and observed in real-time. Sequentially, field data would be reviewed quickly for assessment; thus, leading to a much improved earthquake forecasting capability. The EM precursor determined by this method may surpass all prior precursor claims, and the general public will finally receive long overdue forecasting.

Jones, K. B., II; Saxton, P. T.

2013-12-01

7

EPA LABORATORIES IMPLEMENT EMS PROGRAM  

EPA Science Inventory

This paper highlights the breadth and magnitude of carrying out an effective Environmental Management System (EMS) program at the U.S. EPA's research and development laboratories. Federal research laboratories have unique operating challenges compared to more centralized industr...

8

Angus Robichaud's Reel G Em D A Bm D7  

E-print Network

Angus Robichaud's Reel 4 4 D G A D D G A D 3 3 G Em D A Bm D7 3 3 G Em D A D Animas Reel Bernie Waugh 4 4 3 3 G D G Bm Em C Am C D G D G Bm Em C Am D G The Arkansas Traveler 4 2 D G A D Em A 3D G A D Em G A D D G D A Bm Em A D G D A Em G A D #12;Asher Rodney Miller 4 4 D Em F#m G A D Em G A D A D1 2

Doyle, Peter

9

Angus Robichaud's Reel G Em D A Bm D7  

E-print Network

Angus Robichaud's Reel 4 4 D G A D D G A D 3 3 G Em D A Bm D7 3 3 G Em D A D Animas Reel Bernie Waugh 4 4 3 3 G D G Bm Em C Am C D G D G Bm Em C Am D G The Arkansas Traveler 4 2 D G A D Em A 3 D G A D Em G A D D G D A Bm Em A D G D A Em G A D #12; Asher Rodney Miller 4 4 D Em F#m G A D Em G A D A D 1

Doyle, Peter

10

Correlation of the NBME Advanced Clinical Examination in EM and the National EM M4 exams  

PubMed Central

Introduction Since 2011 two online, validated exams for fourth-year emergency medicine (EM) students have been available (National EM M4 Exams). In 2013 the National Board of Medical Examiners offered the Advanced Clinical Examination in Emergency Medicine (EM-ACE). All of these exams are now in widespread use; however, there are no data on how they correlate. This study evaluated the correlation between the EM-ACE exam and the National EM M4 Exams. Methods From May 2013 to April 2014 the EM-ACE and one version of the EM M4 exam were administered sequentially to fourth-year EM students at five U.S. medical schools. Data collected included institution, gross and scaled scores and version of the EM M4 exam. We performed Pearsons correlation and random effects linear regression. Results 303 students took the EM-ACE and versions 1 (V1) or 2 (V2) of the EM M4 exams (279 and 24, respectively). The mean percent correct for the exams were as follows: EM-ACE 74.8 (SD-8.83), V1 83.0 (SD-6.41), V2 78.5 (SD-7.70). Pearsons correlation coefficient for the V1/EM-ACE was 0.51 (0.42 scaled) and for the V2/EM-ACE was 0.59 (0.41 scaled). The coefficient of determination for V1/EM-ACE was 0.72 and for V2/EM-ACE = 0.71 (0.86 and 0.49 for scaled scores). The R-squared values were 0.25 and 0.30 (0.18 and 0.13, scaled), respectively. There was significant cluster effect by institution. Conclusion There was moderate positive correlation of student scores on the EM-ACE exam and the National EM M4 Exams.

Hiller, Katherine; Miller, Emily S.; Lawson, Luan; Wald, David; Beeson, Michael; Heitz, Corey; Morrissey, Thomas; House, Joseph; Poznanski, Stacey

2015-01-01

11

Lecture 12: EM Radiation (EMR)  

E-print Network

#12;James Clerk Maxwell You! 5 Finally, the pinnacle of EM... E · dA = qencl 0 B · dA = 0 E · dl = E = - dB dt{ Maxwell'sEquations F = q(E + v ? B)Lorentz Force Law: Gauss's Law Gauss's Law for Mag. Faraday's Law Ampère's LawB · dl = µ0(Ireal + 0 dE dt ) 6 Must be cool 7 Maxwell's last two equations... B

Tobar, Michael

12

ISSN 0103-9741 Monografias em Cincia da Computao  

E-print Network

abordagem por reflexão computacional baseada em lógica Dárlinton Barbosa Feres Carvalho Edward Hermann Lucena Dezembro, 2010 Análise de Riscos em Projetos: uma abordagem por reexão computacional baseada em em um projeto, é proposto neste trabalho um modelo para reexão computacional baseado em lógica

Endler, Markus

13

School Budget Hold'em Facilitator's Guide  

ERIC Educational Resources Information Center

"School Budget Hold'em" is a game designed to help school districts rethink their budgeting process. It evolved out of Education Resource Strategies' (ERS) experience working with large urban districts around the country. "School Budget Hold'em" offers a completely new approach--one that can turn the budgeting process into a long-term visioning

Education Resource Strategies, 2012

2012-01-01

14

Fully distributed EM for very large datasets  

Microsoft Academic Search

In EM and related algorithms, E-step compu- tations distribute easily, because data items are independent given parameters. For very large data sets, however, even storing all of the parameters in a single node for the M- step can be impractical. We present a frame- work that fully distributes the entire EM pro- cedure. Each node interacts only with pa- rameters

Jason Wolfe; Aria Haghighi; Dan Klein

2008-01-01

15

LANSIM and its applications to distributed EMS  

SciTech Connect

Distributed energy management systems (EMS) open up a host of alternative design options. Simulation plays an important role in evaluating performance and in comparing alternative designs. Currently all the proposed distributed EMSs are local area network (LAN)-based. To illustrate the application of LANSIM, comparisons are made with different distributed EMS configurations, different LAN technologies (Ethernet and FDDI), and different Ethernet implementations.

Lun, S.M.; Lo, T.; Wu, F.; Murphy, L. [Univ. of California, Berkeley, CA (United States). Dept. of Electrical Engineering and Computer Sciences; Sen, A. [ABB Systems Control, Santa Clara, CA (USD)

1996-08-01

16

Em que medida devem ser privados, em que medida devem ser pblicos o conhecimento e a informao?  

E-print Network

Em que medida devem ser privados, em que medida devem ser públicos o conhecimento e a informação? 1 Transparências com licença Creative Commons Em que medida devem ser privados, em que medida devem ser públicos o as alternativas? codexKonstanz #12;Em que medida devem ser privados, em que medida devem ser públicos o

Kuhlen, Rainer

17

EM International, July 1994, Volume 2  

SciTech Connect

The Office of Environmental Management (EM) at the Department of Energy (DOE) is seeking out and leveraging foreign technology, data, and resources in keeping with EM`s mandate to protect public health and the environment through the safe and cost-effective remediation of the Department`s nuclear weapons sites. EM works closely with foreign governments, industry, and universities to obtain innovative environmental technologies, scientific and engineering expertise, and operations experience that will support EM`s objectives. Where appropriate, these international resources are used to manage the more urgent risks at our sites, secure a safe workplace, help build consensus on critical issues, and strengthen our technology development program. Through international agreements EM engages in cooperative exchange of information, technology, and individuals. Currently, we are managing agreements with a dozen countries in Europe, Latin America, and Asia. These agreements focus on environmental restoration, waste management, transportation of radioactive wastes, and decontamination and decommissioning. This publication contains the following articles: in situ remediation integrated program; in-situ characterization and inspection of tanks; multimedia environmental pollutant assessment system (MEPAS); LLNL wet oxidation -- AEA technology. Besides these articles, this publication covers: EU activities with Russia; technology transfer activities; and international organization activities.

Not Available

1994-10-01

18

em?s ?kio gamybos (ekologin?s ir ?prastin?s) ?taka dirvoemio savyb?ms ir iemini? kvie?i? gr?d? kokybei.  

E-print Network

??Tyrimai atlikti 20082009 m. Lietuvos em?s ?kio universiteto Agroekologijos centro ekologin?s gamybos ir mokomajame (chemizuota gamyba) ?kiuose. Darbo tikslas - ?vertinti ekologin?s em?s ?kio gamybos (more)

Upurvis,; Edgaras

2010-01-01

19

EMS offshore. A new horizon for paramedics.  

PubMed

The difficulty in getting medical aid to offshore drilling platforms can be a source of life-threatening delays. Recently, some companies have charted new waters by actually stationing EMS crews on their rigs. PMID:10116023

Mallard, A S

1991-10-01

20

EMS Division Potential Benefits of Selected  

E-print Network

Engineers Journal, January 1998, p 107 2 D. Kuhlmann-Wilsdorf, "Metal Fiber Brushes", in Electrical Contacts coils are stationary; there are no rotating cold seals #12;EMS Division Advanced Homopolar Motor Concept

21

Reviso sistemtica sobre obesidade em adolescentes brasileiros  

Microsoft Academic Search

Resumo - O propsito deste estudo foi revisar, de forma sistemtica, a literatura nacional sobre a prevalncia e fatores associados obesidade em adolescentes. A busca foi realizada nas bases de dados Pubmed e Bireme, atravs dos descritores: \\

Rafael Miranda Tassitano; Maria Ceclia Marinho Tenrio; Pedro C Hallal

22

M em ory for Item s and M em ory for R elations in the Procedural/D eclarative M em ory Fram ew ork  

E-print Network

ever, as we hope to m ake clear here, progress on this front M E M O R Y , 1 99 7, 5 (1 /2 ), 1 31 ±17M em ory for Item s and M em ory for R elations in the Procedural/D eclarative M em ory Fram ew ork ard Eichenbaum Boston U niversity, U SA A m ajor area of research in m em ory and am nesia concerns

Poldrack, Russ

23

Charge, from EM fields only  

E-print Network

Consider the electric field E about an electron. Its source has been thought a substance called charge, enclosed within a small volume that defines the size of the electron. Scattering experiments find no size at all. Charge is useful, but mysterious. This study concludes that charge is not real. Useful, but not real. Absent real charge, the electric field must look to a different source. We know another electric field, vxB, not sourced by charge. A simple model of the electron, using EM fields only, has been found that generates an electric field vxB very like E. Gauss' law finds the model contains charge, but div vxB cannot find the charge density. The model contains a permanent magnetic flux quantum, configured as a dipole. The dipolar B fields spin around the symmetry axis, accounting for angular momentum. Spin stabilizes the magnetic flux quantum, and creates the vxB electric field. Stability in this model is dynamic. Energy is exchanged between the dipolar magnetic moment and an encircling toroidal displacement current, at the Compton frequency, mc^2/h = 1.24x10^20 Hz. The electric field undulates at this rate, instead of being static like E associated with charge. Absent any real charge, we have to abandon the notion that size of a charged particle is that of a small sack full of charge. The only electric field is vxB, and its source is not charge. What is the size of an electron? Coulomb scattering finds it point-like, but its spinning B fields extend to infinity.

R. L. Collins

2007-03-04

24

EMS adaptation for climate change  

NASA Astrophysics Data System (ADS)

The purpose of this study was to find an appropriate scenario of pre-hospital transportation of an emergency medical service (EMS) system for burdensome casualties resulting from extreme climate events. A case of natural catastrophic events in Taiwan, 88 wind-caused disasters, was reviewed and analyzed. A sequential-conveyance method was designed to shorten the casualty transportation time and to promote the efficiency of ambulance services. A proposed mobile emergency medical center was first constructed in a safe area, but nearby the disaster area. The Center consists of professional medical personnel who process the triage of incoming patients and take care of casualties with minor injuries. Ambulances in the Center were ready to sequentially convey the casualties with severer conditions to an assigned hospital that is distant from the disaster area for further treatment. The study suggests that if we could construct a spacious and well-equipped mobile emergency medical center, only a small portion of casualties would need to be transferred to distant hospitals. This would reduce the over-crowding problem in hospital ERs. First-line ambulances only reciprocated between the mobile emergency medical center and the disaster area, saving time and shortening the working distances. Second-line ambulances were highly regulated between the mobile emergency medical center and requested hospitals. The ambulance service of the sequential-conveyance method was found to be more efficient than the conventional method and was concluded to be more profitable and reasonable on paper in adapting to climate change. Therefore, additional practical work should be launched to collect more precise quantitative data.

Pan, C.; Chang, Y.; Wen, J.; Tsai, M.

2010-12-01

25

Tour of the Electromagnetic Spectrum (EMS) Videos  

NSDL National Science Digital Library

These videos introduce middle- and high school-age learners to the electromagnetic spectrum. The product consists of 8 animations including an introduction to electromagnetic waves and one animation for each wavelength of the EM spectrum (Radio, Microwave, Infrared, Visible, Ultraviolet, X-Rays and Gamma Rays). Each wavelength of the EM spectrum offers a construct to illustrate and teach about NASA sensors, missions, and science. Emphasis is placed on relevant science, such as lunar exploration, and hot science topics, such as climate change. The examples and narrative for each wavelength animation build on the learners prior knowledge then introduces examples from NASA missions. These examples explore the use of spectral analysis and visualizations that help scientists make discoveries about the world around us using EM waves.

Troy Benesch

2009-01-01

26

EM-ONE : an architecture for reflective commonsense thinking  

E-print Network

This thesis describes EM-ONE, an architecture for commonsense thinking capable of reflective reasoning about situations involving physical, social, and mental dimensions. EM-ONE uses as its knowledge base a library of ...

Singh, Pushpinder, 1972-2006.

2005-01-01

27

ECE 341: Electromagnetic Fields I EM devices and systems  

E-print Network

in material media - Electromagnetic induction - Inductance - Magnetic energy Applications: - ElectronicsECE 341: Electromagnetic Fields I EM devices and systems - Can compute and analyze potentials compositions - Can evaluate capacitance, inductance, resistance, and conductance of EM structures - Understands

Schumacher, Russ

28

EM2: A Scalable Shared-Memory Multicore Architecture  

E-print Network

We introduce the Execution Migration Machine (EM2), a novel, scalable shared-memory architecture for large-scale multicores constrained by off-chip memory bandwidth. EM2 reduces cache miss rates, and consequently off-chip ...

Khan, Omer

2010-06-12

29

A emisso em 8mm e as bandas de Merrill-Sanford em estrelas carbonadas  

NASA Astrophysics Data System (ADS)

Estrelas carbonadas possuem bandas moleculares em absoro no visvel e, no infravermelho (IR) as principais caractersticas espectrais se devem a emisso de gros. Recentemente foi detectada a presena de bandas de SiC2 (Merrill-Sanford, MS) em emisso sendo atribuda presena de um disco rico em poeira. Neste trabalho analisamos uma amostra de 14 estrelas carbonadas, observadas no telescpio de 1.52 m do ESO em 4 regies espectrais diferentes, a fim de detectar as bandas de MS em emisso. Nossa amostra composta de estrelas que apresentam alm da emisso em 11.3 mm, outra em 8 mm. Esta ltima emisso, no usual nestes objetos, tem sido atribuda ou a molculas de C2H2, ou a um composto slido ainda indefinido. A deteco de emisses de MS e aquelas no IR, simultaneamente, revelaria um cenrio mais complexo que o habitualmente esperado para os ventos destes objetos. No entanto como primeiro resultado, verificamos que as bandas de Merrill-Sanford encontram-se em absoro, no revelando nenhuma conexo com a emisso a 8 mm. Assim, temos duas hipteses: (a) a emisso a 8 mm se deve molcula C2H2 ou (b) essa emisso resultado da emisso trmica de gros. Testamos a segunda hiptese modelando a amostra com gros no-homogneos de SiC e quartzo, o qual emite em aproximadamente 8mm. Este gro seria produzido em uma fase evolutiva anterior a das carbonadas (estrelas S) e por terem uma estrutura cristalina so destrudos apenas na presena de campos de radiao ultravioleta muito intensos. Os modelos para os envoltrios utilizam o mtodo de Monte Carlo para descrever o problema do transporte da radiao. As concluses deste trabalho so: (1) as bandas de Merrill-Sanford se encontram em absoro, sugerindo um cenrio usual para os ventos das estrelas da amostra; (2) neste cenrio, a emisso em 8 mm seria resultado de gros de quartzo com mantos de SiC, indicando que o quartzo poderia sobreviver a fase evolutiva S.

de Mello, A. B.; Lorenz-Martins, S.

2003-08-01

30

7 CFR 759.6 - EM to be made available.  

Code of Federal Regulations, 2014 CFR

... 2014-01-01 2014-01-01 false EM to be made available. 759.6 Section 759...DESIGNATIONS AND NOTIFICATIONS 759.6 EM to be made available. (a) For purposes of the EM Program under part 764, subpart I, of...

2014-01-01

31

7 CFR 759.6 - EM to be made available.  

Code of Federal Regulations, 2013 CFR

... 2013-01-01 2013-01-01 false EM to be made available. 759.6 Section 759...DESIGNATIONS AND NOTIFICATIONS 759.6 EM to be made available. (a) For purposes of the EM Program under part 764, subpart I, of...

2013-01-01

32

7 CFR 1945.35 - Special EM loan training.  

Code of Federal Regulations, 2011 CFR

...2011-01-01 2009-01-01 true Special EM loan training. 1945.35 Section 1945...Assistance-General 1945.35 Special EM loan training. (a) General...completed they will be well qualified to process EM loans without undue delay. The...

2011-01-01

33

7 CFR 1945.35 - Special EM loan training.  

Code of Federal Regulations, 2010 CFR

...2010-01-01 2009-01-01 true Special EM loan training. 1945.35 Section 1945...Assistance-General 1945.35 Special EM loan training. (a) General...completed they will be well qualified to process EM loans without undue delay. The...

2010-01-01

34

7 CFR 1945.35 - Special EM loan training.  

Code of Federal Regulations, 2012 CFR

...2012-01-01 2012-01-01 false Special EM loan training. 1945.35 Section 1945...Assistance-General 1945.35 Special EM loan training. (a) General...completed they will be well qualified to process EM loans without undue delay. The...

2012-01-01

35

Bayesian Gaussian Process Classification with the EM-EP Algorithm  

E-print Network

Bayesian Gaussian Process Classification with the EM-EP Algorithm Hyun-Chul Kim and Zoubin of hyperparameters to determine various aspects of the function. Recently, the expectation propagation (EP) approach an approximate EM algorithm, the EM-EP algorithm, to learn both the latent function and the hyperparameters

Ghahramani, Zoubin

36

On Convergence Properties of the EM Algorithm for Gaussian Mixtures  

Microsoft Academic Search

We build up the mathematical connection between the Expectation-Maximization (EM) algorithm and gradient-based approaches for maximum likelihood learning of finite gaussian mixtures. We show that the EM step in parameter space is obtained from the gradient via a projection matrix P, and we provide an explicit expression for the matrix. We then analyze the convergence of EM in terms of

Lei Xu; Michael I. Jordan

1996-01-01

37

A Structural EM Algorithm for Phylogenetic Inference  

Microsoft Academic Search

A central task in the study of molecular evolution is the reconstruction of a phylogenetic tree from sequences of current-day taxa. The most established approach to tree reconstruction is maximum likelihood (ML) analysis. Unfortunately, searching for the maximum likelihood phylogenetic tree is computationally prohibitive for large data sets. In this paper, we describe a new algorithm that uses Structural EM

Nir Friedman; Matan Ninio; Itsik Pe'er; Tal Pupko

2002-01-01

38

Network Emulation with NetEm  

Microsoft Academic Search

Many protocols and applications perform poorly when exposed to real life networks with delay and packet loss. Often, it is costly and dicult to reproduce Internet behavior in a controlled environment. There are tools avail- able for testing, but they are either expen- sive hardware solutions, proprietary software, or limited research projects. NetEm is a recent enhancement of the trac

Stephen Hemminger

39

Bolseiros em protesto. "Para a banca milhes,  

E-print Network

segunda vez a candida- tura a bolsa de doutoramento. Em 179 candidatos entraram 12. Ele era o 14.° e acha para os animais já houve dificuldades", diz. David Gomes e Ana Silva, de 23 e 24 anos, estão a começar

Instituto de Sistemas e Robotica

40

Mercury pollution in the Ems estuary  

NASA Astrophysics Data System (ADS)

From approximately 1960 to 1975 the Ems estuary received several tons of mercury per year from a chlor-alkali plant, a pesticide factory and some minor sources. The discharge has been reduced drastically from 1976 onwards. In 1975 and 1976 measurements were made on the distribution of mercury in the sediment. The horizontal distribution revealed a strong local enrichment of the sediment near the point of discharge. The vertical distribution was found to be in accordance with the local deposition rates. In the water phase no significant change in mercury content from 1975 to 1978/79 could be demonstrated. In 1978/79 a difference between Ems estuary and Dutch Wadden Sea was not significant. In 1978 mercury contents of eelpout Zoarces viviparus in the Ems estuary were about twice as high as in the Wadden Sea. In the Ems estuary a decrease of these contents was found between 1974/75 and 1978. A similar decline in the Wadden Sea may be related to a decreased mercury discharge by the River Rhine.

Essink, K.

1980-03-01

41

de Ps-Graduao em Enfermagem  

E-print Network

/data expedição CPF Nome da mãe/pai Estado civil E-mail Endereço residencial #12;Programa de Pós-Graduação em Dirigir-se ao Banco do Brasil e fazer um depósito para a Agência: 14532 Conta ?nica do Tesouro Nacional

Floeter, Sergio Ricardo

42

Efficient Scanning for EM Based Target Localization  

E-print Network

of the time. 1 Introduction Focused Ion Beam Scanning Electron Microscopes (FIB-SEM) and their ability Image Fig. 1. FIB-SEM Scanning Process. The microscope repeatedly scans the surface of a sample blockEfficient Scanning for EM Based Target Localization Raphael Sznitman, Aurelien Lucchi, Natasa

Fua, Pascal

43

EM-dissertations completed in 2007  

E-print Network

theme: Computational and Experimental Mechanics Sensing, Monitoring and Control of Laser Based Welding-90-9022179-3 EM research theme: Computational and Experimental Mechanics Thermomechanical fatigue failure;Sensor-guided robotic laser welding Graaf, M.W. de Advisor: Prof.dr.ir. J. Meijer; prof.dr.ir. J

Franssen, Michael

44

College of Engineering EM Engineering Mechanics  

E-print Network

College of Engineering EM Engineering Mechanics KEY: # = new course * = course changed = course; bending of beams; combined loading of members; buckling of columns. Prereq: Registration in the College.Kinematics:cartesianandpolarcoordinatesystems;normalandtangentialcomponents;translatingand rotating reference frames. Kinetics of particles and rigid bodies: laws of motion; work and energy; impulse

MacAdam, Keith

45

ESPCIES DO GNERO Eimeria (APICOMPLEXA: EIMERIIDAE) EM TAMANDUS-BANDEIRA (Myrmecophaga tridactyla LINNAEUS, 1758) EM CATIVEIRO  

Microsoft Academic Search

1 ABSTRACT:- FREITAS, F.L. DA C.; ALMEIDA, K. DE S.; ZANETTI, A.S.; NASCIMENTO, A.A. DO; MACHADO, C. R.; MACHADO, R.Z. (Species of the genus Eimeria (Apicomplexa: Eimeriidae) in giant anteaters (Myrmecophaga tridactyla Linnaeus, 1758) in captivity). Espcies do gnero Eimeria (Apicomplexa: Eimeriidae) em Tamandus-bandeira (Myrmecophaga tridactyla Linnaeus, 1758) em cativeiro. Revista Brasileira de Parasitologia Veterinria, v. 15, n. 1, p.

FAGNER LUIZ DA C. FREITAS; ANDR S. ZANETTI; CLIO R. MACHADO; ROSANGELA Z. MACHADO

46

BUSCA LOCAL PARA POS-PROCESSAMENTO EM RESULTADOS DE OTIMIZAC~AO MULTI-OBJETIVO EM REDES DE FILAS  

E-print Network

BUSCA LOCAL PARA P´OS-PROCESSAMENTO EM RESULTADOS DE OTIMIZA¸C~AO MULTI-OBJETIVO EM REDES DE FILAS otimiza¸c~ao de redes de filas finitas, a capacidade total do sistema em ´areas de espera deve ser a menor algoritmo simulated annealing foi desenvolvido, especialmente para redes de filas finitas, produzindo solu

Cruz, Frederico

47

Frmions ultra-frios em redes ticas  

E-print Network

Férmions ultra-frios em redes óticas Thereza C de L Paiva Colóquio Interinstitucional CBPF - IMPA - UFF - UFRJ 18 de abril de 2012 #12;Átomos ultrafrios armadilhados Bósons e férmions Redes óticas;Redes óticasRedes óticas #12;Redes óticas Potencial confinante + Potencial periódico + #12;Dimensão 3D

Liu, I-Shih

48

Transportes em Revista.com Pas: Portugal  

E-print Network

Comentar artigo Imprimir PDF Enviar a um amigo 09 -10 -2012 Toyota aposta no hidrogénio para ve ículos Plug-in em Paris 21 -08 -2012 Toyota lan ça novo Auris com motoriza ção híbrida 20 -08 -2012 MAN Toyota Veículos híbridos Estatísticas deste artigo Passageiros & Mobilidade voltar Os utilizadores

Instituto de Sistemas e Robotica

49

TandEM: Titan and Enceladus mission  

Microsoft Academic Search

TandEM was proposed as an L-class (large) mission in response to ESAs Cosmic Vision 20152025 Call, and accepted for further\\u000a studies, with the goal of exploring Titan and Enceladus. The mission concept is to perform in situ investigations of two worlds\\u000a tied together by location and properties, whose remarkable natures have been partly revealed by the ongoing CassiniHuygens\\u000a mission. These

A. Coustenis; S. K. Atreya; T. Balint; R. H. Brown; M. K. Dougherty; F. Ferri; M. Fulchignoni; D. Gautier; R. A. Gowen; C. A. Griffith; L. I. Gurvits; R. Jaumann; Y. Langevin; M. R. Leese; J. I. Lunine; C. P. McKay; X. Moussas; I. Mller-Wodarg; F. Neubauer; T. C. Owen; F. Raulin; E. C. Sittler; F. Sohl; C. Sotin; G. Tobie; T. Tokano; E. P. Turtle; J.-E. Wahlund; J. H. Waite; K. H. Baines; J. Blamont; A. J. Coates; I. Dandouras; T. Krimigis; E. Lellouch; R. D. Lorenz; A. Morse; C. C. Porco; M. Hirtzig; J. Saur; T. Spilker; J. C. Zarnecki; E. Choi; N. Achilleos; R. Amils; P. Annan; D. H. Atkinson; Y. Bnilan; C. Bertucci; B. Bzard; G. L. Bjoraker; M. Blanc; L. Boireau; J. Bouman; M. T. Capria; E. Chassefire; P. Coll; M. Combes; J. F. Cooper; A. Coradini; F. Crary; T. Cravens; I. A. Daglis; E. de Angelis; C. de Bergh; I. de Pater; C. Dunford; G. Durry; O. Dutuit; D. Fairbrother; F. M. Flasar; A. D. Fortes; R. Frampton; M. Fujimoto; M. Galand; O. Grasset; M. Grott; T. Haltigin; A. Herique; F. Hersant; H. Hussmann; W. Ip; R. Johnson; E. Kallio; S. Kempf; M. Knapmeyer; W. Kofman; R. Koop; T. Kostiuk; N. Krupp; M. Kppers; H. Lammer; L.-M. Lara; P. Lavvas; S. Le Moulic; S. Lebonnois; S. Ledvina; J. Li; T. A. Livengood; R. M. Lopes; J.-J. Lopez-Moreno; D. Luz; P. R. Mahaffy; U. Mall; J. Martinez-Frias; B. Marty; T. McCord; C. Menor Salvan; A. Milillo; D. G. Mitchell; R. Modolo; O. Mousis; M. Nakamura; C. D. Neish; C. A. Nixon; D. Nna Mvondo; G. Orton; M. Paetzold; J. Pitman; S. Pogrebenko; W. Pollard; O. Prieto-Ballesteros; P. Rannou; K. Reh; L. Richter; F. T. Robb; R. Rodrigo; S. Rodriguez; P. Romani; M. Ruiz Bermejo; E. T. Sarris; P. Schenk; B. Schmitt; N. Schmitz; D. Schulze-Makuch; K. Schwingenschuh; A. Selig; B. Sicardy; L. Soderblom; L. J. Spilker; D. Stam; A. Steele; K. Stephan; D. F. Strobel; K. Szego; C. Szopa; R. Thissen; M. G. Tomasko; D. Toublanc; H. Vali; I. Vardavas; V. Vuitton; R. A. West; R. Yelle; E. F. Young

2009-01-01

50

TandEM: Titan and Enceladus mission  

USGS Publications Warehouse

TandEM was proposed as an L-class (large) mission in response to ESA's Cosmic Vision 2015-2025 Call, and accepted for further studies, with the goal of exploring Titan and Enceladus. The mission concept is to perform in situ investigations of two worlds tied together by location and properties, whose remarkable natures have been partly revealed by the ongoing Cassini-Huygens mission. These bodies still hold mysteries requiring a complete exploration using a variety of vehicles and instruments. TandEM is an ambitious mission because its targets are two of the most exciting and challenging bodies in the Solar System. It is designed to build on but exceed the scientific and technological accomplishments of the Cassini-Huygens mission, exploring Titan and Enceladus in ways that are not currently possible (full close-up and in situ coverage over long periods of time). In the current mission architecture, TandEM proposes to deliver two medium-sized spacecraft to the Saturnian system. One spacecraft would be an orbiter with a large host of instruments which would perform several Enceladus flybys and deliver penetrators to its surface before going into a dedicated orbit around Titan alone, while the other spacecraft would carry the Titan in situ investigation components, i.e. a hot-air balloon (Montgolfi??re) and possibly several landing probes to be delivered through the atmosphere. ?? Springer Science + Business Media B.V. 2008.

Coustenis, A.; Atreya, S.K.; Balint, T.; Brown, R.H.; Dougherty, M.K.; Ferri, F.; Fulchignoni, M.; Gautier, D.; Gowen, R.A.; Griffith, C.A.; Gurvits, L.I.; Jaumann, R.; Langevin, Y.; Leese, M.R.; Lunine, J.I.; McKay, C.P.; Moussas, X.; Muller-Wodarg, I.; Neubauer, F.; Owen, T.C.; Raulin, F.; Sittler, E.C.; Sohl, F.; Sotin, C.; Tobie, G.; Tokano, T.; Turtle, E.P.; Wahlund, J.-E.; Waite, J.H.; Baines, K.H.; Blamont, J.; Coates, A.J.; Dandouras, I.; Krimigis, T.; Lellouch, E.; Lorenz, R.D.; Morse, A.; Porco, C.C.; Hirtzig, M.; Saur, J.; Spilker, T.; Zarnecki, J.C.; Choi, E.; Achilleos, N.; Amils, R.; Annan, P.; Atkinson, D.H.; Benilan, Y.; Bertucci, C.; Bezard, B.; Bjoraker, G.L.; Blanc, M.; Boireau, L.; Bouman, J.; Cabane, M.; Capria, M.T.; Chassefiere, E.; Coll, P.; Combes, M.; Cooper, J.F.; Coradini, A.; Crary, F.; Cravens, T.; Daglis, I.A.; de Angelis, E.; De Bergh, C.; de Pater, I.; Dunford, C.; Durry, G.; Dutuit, O.; Fairbrother, D.; Flasar, F.M.; Fortes, A.D.; Frampton, R.; Fujimoto, M.; Galand, M.; Grasset, O.; Grott, M.; Haltigin, T.; Herique, A.; Hersant, F.; Hussmann, H.; Ip, W.; Johnson, R.; Kallio, E.; Kempf, S.; Knapmeyer, M.; Kofman, W.; Koop, R.; Kostiuk, T.; Krupp, N.; Kuppers, M.; Lammer, H.; Lara, L.-M.; Lavvas, P.; Le, Mouelic S.; Lebonnois, S.; Ledvina, S.; Li, J.; Livengood, T.A.; Lopes, R.M.; Lopez-Moreno, J. -J.; Luz, D.; Mahaffy, P.R.; Mall, U.; Martinez-Frias, J.; Marty, B.; McCord, T.; Salvan, C.M.; Milillo, A.; Mitchell, D.G.; Modolo, R.; Mousis, O.; Nakamura, M.; Neish, C.D.; Nixon, C.A.; Mvondo, D.N.; Orton, G.; Paetzold, M.; Pitman, J.; Pogrebenko, S.; Pollard, W.; Prieto-Ballesteros, O.; Rannou, P.; Reh, K.; Richter, L.; Robb, F.T.; Rodrigo, R.; Rodriguez, S.; Romani, P.; Bermejo, M.R.; Sarris, E.T.; Schenk, P.; Schmitt, B.; Schmitz, N.; Schulze-Makuch, D.; Schwingenschuh, K.; Selig, A.; Sicardy, B.; Soderblom, L.; Spilker, L.J.; Stam, D.; Steele, A.; Stephan, K.; Strobel, D.F.; Szego, K.; Szopa

2009-01-01

51

TandEM: Titan and Enceladus mission  

NASA Astrophysics Data System (ADS)

TandEM was proposed as an L-class (large) mission in response to ESAs Cosmic Vision 2015-2025 Call, and accepted for further studies, with the goal of exploring Titan and Enceladus. The mission concept is to perform in situ investigations of two worlds tied together by location and properties, whose remarkable natures have been partly revealed by the ongoing Cassini-Huygens mission. These bodies still hold mysteries requiring a complete exploration using a variety of vehicles and instruments. TandEM is an ambitious mission because its targets are two of the most exciting and challenging bodies in the Solar System. It is designed to build on but exceed the scientific and technological accomplishments of the Cassini-Huygens mission, exploring Titan and Enceladus in ways that are not currently possible (full close-up and in situ coverage over long periods of time). In the current mission architecture, TandEM proposes to deliver two medium-sized spacecraft to the Saturnian system. One spacecraft would be an orbiter with a large host of instruments which would perform several Enceladus flybys and deliver penetrators to its surface before going into a dedicated orbit around Titan alone, while the other spacecraft would carry the Titan in situ investigation components, i.e. a hot-air balloon (Montgolfire) and possibly several landing probes to be delivered through the atmosphere.

Coustenis, A.; Atreya, S. K.; Balint, T.; Brown, R. H.; Dougherty, M. K.; Ferri, F.; Fulchignoni, M.; Gautier, D.; Gowen, R. A.; Griffith, C. A.; Gurvits, L. I.; Jaumann, R.; Langevin, Y.; Leese, M. R.; Lunine, J. I.; McKay, C. P.; Moussas, X.; Mller-Wodarg, I.; Neubauer, F.; Owen, T. C.; Raulin, F.; Sittler, E. C.; Sohl, F.; Sotin, C.; Tobie, G.; Tokano, T.; Turtle, E. P.; Wahlund, J.-E.; Waite, J. H.; Baines, K. H.; Blamont, J.; Coates, A. J.; Dandouras, I.; Krimigis, T.; Lellouch, E.; Lorenz, R. D.; Morse, A.; Porco, C. C.; Hirtzig, M.; Saur, J.; Spilker, T.; Zarnecki, J. C.; Choi, E.; Achilleos, N.; Amils, R.; Annan, P.; Atkinson, D. H.; Bnilan, Y.; Bertucci, C.; Bzard, B.; Bjoraker, G. L.; Blanc, M.; Boireau, L.; Bouman, J.; Cabane, M.; Capria, M. T.; Chassefire, E.; Coll, P.; Combes, M.; Cooper, J. F.; Coradini, A.; Crary, F.; Cravens, T.; Daglis, I. A.; de Angelis, E.; de Bergh, C.; de Pater, I.; Dunford, C.; Durry, G.; Dutuit, O.; Fairbrother, D.; Flasar, F. M.; Fortes, A. D.; Frampton, R.; Fujimoto, M.; Galand, M.; Grasset, O.; Grott, M.; Haltigin, T.; Herique, A.; Hersant, F.; Hussmann, H.; Ip, W.; Johnson, R.; Kallio, E.; Kempf, S.; Knapmeyer, M.; Kofman, W.; Koop, R.; Kostiuk, T.; Krupp, N.; Kppers, M.; Lammer, H.; Lara, L.-M.; Lavvas, P.; Le Moulic, S.; Lebonnois, S.; Ledvina, S.; Li, J.; Livengood, T. A.; Lopes, R. M.; Lopez-Moreno, J.-J.; Luz, D.; Mahaffy, P. R.; Mall, U.; Martinez-Frias, J.; Marty, B.; McCord, T.; Menor Salvan, C.; Milillo, A.; Mitchell, D. G.; Modolo, R.; Mousis, O.; Nakamura, M.; Neish, C. D.; Nixon, C. A.; Nna Mvondo, D.; Orton, G.; Paetzold, M.; Pitman, J.; Pogrebenko, S.; Pollard, W.; Prieto-Ballesteros, O.; Rannou, P.; Reh, K.; Richter, L.; Robb, F. T.; Rodrigo, R.; Rodriguez, S.; Romani, P.; Ruiz Bermejo, M.; Sarris, E. T.; Schenk, P.; Schmitt, B.; Schmitz, N.; Schulze-Makuch, D.; Schwingenschuh, K.; Selig, A.; Sicardy, B.; Soderblom, L.; Spilker, L. J.; Stam, D.; Steele, A.; Stephan, K.; Strobel, D. F.; Szego, K.; Szopa, C.; Thissen, R.; Tomasko, M. G.; Toublanc, D.; Vali, H.; Vardavas, I.; Vuitton, V.; West, R. A.; Yelle, R.; Young, E. F.

2009-03-01

52

Complete-data spaces and generalized EM algorithms  

Microsoft Academic Search

Expectation-maximization (EM) algorithms have been applied extensively for computing maximum-likelihood and penalized-likelihood parameter estimates in signal processing applications. Intrinsic to each EM algorithm is a complete-data space (CDS)-a hypothetical set of random variables that is related to the parameters more naturally than the measurements are. The authors describe two generalizations of the EM paradigm: (i) allowing the relationship between the

J. A. Fessler; A. O. Hero

1993-01-01

53

Em18 and Em16, new serologic marker epitopes for alveolar echinococcosis in western blot analysis, are the only two epitopes recognized by commercially available weak positive (cut off) sera for Em2plus-ELISA.  

PubMed

The assay system for antibody responses against Em2, the most specific antigen for serodiagnosis of alveolar echinococcosis (AE), has been established by enzyme-linked immunosorbent assay (ELISA) but not by Western blot assay, since Em2 antigen is not protein but carbohydrate in nature. Recently we reported that previously undescribed protein epitopes, designated Em18 and Em16 due to their molecular weights, were good serologic markers for AE by Western blot analysis. It has been shown that Em18 and Em16 are the only two epitopes recognized by commercially available weak positive (cut off) sera for the Em2plus-ELISA. PMID:8583132

Ito, A; Osawa, Y; Nakao, M; Horii, T; Okamoto, M; Itoh, M; Yamashita, T

1995-12-01

54

2. HI PAR (ACQUISITION RADAR) TOWER AND ENLISTED MEN (EM) ...  

Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

2. HI PAR (ACQUISITION RADAR) TOWER AND ENLISTED MEN (EM) BARRACKS WITH RADAR ATTACHED. - Nike Hercules Missile Battery Summit Site, Battery Control Administration & Barracks Building, Anchorage, Anchorage, AK

55

Test beam performance of CDF plug upgrade EM calorimeter  

SciTech Connect

CDF Plug Upgrade(tile-fiber) EM Calorimeter performed resolution of 15%/{radical}E{circle_plus}0.7% with non-linearity less than 1% in a energy range of 5-180 GeV at Fermilab Test Beam. Transverse uniformity of inside-tower-response of the EM Calorimeter was 2.2% with 56 GeV positron, which was reduced to 1.0% with response map correction. We observed 300 photo electron/GeV in the EM Calorimeter. Ratios of EM Calorimeter response to positron beam to that to {sup 137}Cs Source was stable within 1% in the period of 8 months.

Fukui, Y. [National Lab. for High Energy Physics, Tsukuba, Ibaraki (Japan); CDF Upgrade Group

1998-01-01

56

You did what? Clinical errors in EMS.  

PubMed

It was late and you were exhausted. You ran a call that didn't go the way you would have liked. Errors occurred. What actions do you take when your partner is making mistakes? When do you step in? Do you step in? What if there's more to the errors than you realize? This article provides guidelines for EMS personnel to consider when dealing with a scenario that contains clinical errors. Although not an all-inclusive list, the examples and solutions may be beneficial to providers, including rookies and veterans. PMID:11501273

Linder, G; Murphy, P; Streger, M R

2001-08-01

57

EM threat analysis for wireless systems.  

SciTech Connect

Modern digital radio systems are complex and must be carefully designed, especially when expected to operate in harsh propagation environments. The ability to accurately predict the effects of propagation on wireless radio performance could lead to more efficient radio designs as well as the ability to perform vulnerability analyses before and after system deployment. In this report, the authors--experts in electromagnetic (EM) modeling and wireless communication theory--describe the construction of a simulation environment that is capable of quantifying the effects of wireless propagation on the performance of digital communication.

Burkholder, R. J. (Ohio State University Electroscience Laboratory); Mariano, Robert J.; Schniter, P. (Ohio State University Electroscience Laboratory); Gupta, I. J. (Ohio State University Electroscience Laboratory)

2006-06-01

58

Aquisio de Estreptococos Mutans e Desenvolvimento de Crie Dental em Primognitos  

PubMed Central

Objetivo Avaliar o momento de aquisio de estreptococos mutans (EM), desenvolvimento de crie dental e as variveis a eles associadas no decorrer de 23 meses, em primognitos de famlias de baixo nvel socioeconmico, desde os sete meses de idade. Mtodo A amostra foi selecionada com base em mes densamente colonizadas por EM, incluindo todos os membros de 14 famlias que conviviam na mesma casa. Foram envolvidos no estudo 14 mes, pais e primognitos e 8 parentes, na maioria avs. Exames clnicos e radiogrficos iniciais determinaram os ndices de crie e condio periodontal dos adultos. Contagens de EM foram feitas em todos os adultos nas duas primeiras visitas. Nas crianas foram avaliados os nveis de EM, o nmero de dentes e de cries, em quatro visitas. Resultados A prevalncia de EM nos adultos foi alta, estando ausente em apenas um dos pais. EM foram detectados em 1, 2, 3 e 10 crianas, respectivamente nas visitas #1, 2, 3 e 4. A crie dental foi detectada em apenas trs crianas na ltima visita (aos 30 meses de idade), as quais apresentaram escores de EM significantemente maiores que as crianas sem crie, na mesma visita. Concluso Exclusivamente a condio social de baixa renda e mes densamente colonizadas por EM no so sinnimo de colonizao precoce e alta atividade de crie em crianas cuidadas em casa. O desenvolvimento de crie est significantemente associado a escores elevados de EM nas crianas. PMID:22022218

NOCE, Erica; RUBIRA, Cassia Maria Fischer; da Silva ROSA, Odila Pereira; da SILVA, Salete Moura Bonifcio; BRETZ, Walter Antonio

2011-01-01

59

Rito Funerrio entre os Florianopolitanos: corpos em dilogo  

Microsoft Academic Search

Abertura Quando os espanhis encontraram-se com os amerndios, o que os livros de histria teimam em chamar de descobrimento, cosmologias diferentes foram postas em contato, num processo vigoroso de estranhamento do outro. Cada qual a sua maneira tratou de descobrir quem era este \\

Fernando Gonalves Bitencourt

60

Nonlinear Cyclotron-Resonance Accelerations by a Generalized EM Wave  

E-print Network

). Unlike the usual transit-time accelerations e 00 v 1 this acceleration mechanism is independentNonlinear Cyclotron-Resonance Accelerations by a Generalized EM Wave AKIMOTO, Kazuhiro and HOJO accelerations by a 1D, EM, dispersive pulse in an external magnetic field are investigated. It is found

Boyer, Edmond

61

CURSO DE PS-GRADUAO EM COMPUTAO APLICADA  

E-print Network

Sistemas Complexos Física Matemática Fundamentos da Teoria de Conjuntos Nebulosos e da Teoria de Possibilidades Inteligência Artificial Inteligência Computacional e Aplicações Introdução à Teoria de Sistemas Teoria do Controle Inteligente Testes de Software Baseado em Modelo Tópicos Especiais em Computação

62

Dirio Econmico -Universidades Como ser investigador em Portugal  

E-print Network

Diário Económico - Universidades Como é ser investigador em Portugal Autor: N.D. Editora: ST e SF - Universidades Como é ser investigador em Portugal Autor: N.D. Editora: ST e SF Id: 1646658 Data Publicação: 19

Instituto de Sistemas e Robotica

63

Stochastic EM-based TFBS motif discovery with MITSU  

PubMed Central

Motivation: The ExpectationMaximization (EM) algorithm has been successfully applied to the problem of transcription factor binding site (TFBS) motif discovery and underlies the most widely used motif discovery algorithms. In the wider field of probabilistic modelling, the stochastic EM (sEM) algorithm has been used to overcome some of the limitations of the EM algorithm; however, the application of sEM to motif discovery has not been fully explored. Results: We present MITSU (Motif discovery by ITerative Sampling and Updating), a novel algorithm for motif discovery, which combines sEM with an improved approximation to the likelihood function, which is unconstrained with regard to the distribution of motif occurrences within the input dataset. The algorithm is evaluated quantitatively on realistic synthetic data and several collections of characterized prokaryotic TFBS motifs and shown to outperform EM and an alternative sEM-based algorithm, particularly in terms of site-level positive predictive value. Availability and implementation: Java executable available for download at http://www.sourceforge.net/p/mitsu-motif/, supported on Linux/OS X. Contact: a.m.kilpatrick@sms.ed.ac.uk PMID:24931999

Kilpatrick, Alastair M.; Ward, Bruce; Aitken, Stuart

2014-01-01

64

10 CFR Appendixes E-M to Part 52 - [Reserved  

Code of Federal Regulations, 2010 CFR

10 Energy 2 2010-01-01 2010-01-01 false [Reserved] E Appendixes E-M to Part 52 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) LICENSES, CERTIFICATIONS, AND APPROVALS FOR NUCLEAR POWER PLANTS Appendixes E-M to Part 52...

2010-01-01

65

Notas para uma Avaliao do Discurso Marxista em Douglass North  

Microsoft Academic Search

A partir da publicao do livro Institutions, Institutional Change and Economic Performance em 1990 e da obteno do Nobel em 1993, as contribuies de Douglass North parecem ter entrado definitivamente no debate sobre a questo do desenvolvimento das economias no longo prazo. Muito se discute atualmente sobre a natureza da obra de North, mais especificamente sobre o grau de neoclassicismo

Gabriel Galpolo; Paulo Gala; Danilo Araujo Fernandes

2008-01-01

66

Tuning of EM performance for streamlined aircraft radomes  

Microsoft Academic Search

Aircraft radomes are often streamlined and highly prone to EM performance degradation due to fabrication uncertainties and the non-uniformity of the constituent radome materials. A novel patching scheme is employed for the enhancement of the EM performance. Besides tuning the performance, this patching scheme can also be employed to determine the potential of the radome for any further improvements.

R. U. Nair; R. M. Jha

2004-01-01

67

BENJAMIN FRANKLIN E A HISTRIA DA ELETRICIDADE EM LIVROS DIDTICOS  

Microsoft Academic Search

Introduo Nos ltimos anos, a histria da cincia vem sendo introduzida em materiais didticos utilizados em sala de aula. Uma das razes para isso a presso de rgos governamentais, tais como a Secretaria de Educao Bsica, responsvel pela avaliao destes livros dentro do Programa Nacional de Livros Didticos para o ens ino fundamental e mdio. Os editais destes programas

Cibelle Celestino Silva; Ana Carolina Pimentel

68

Esparsidade, Estrutura, Escalamento e Estabilidade em Algebra Linear Computacional  

E-print Network

Sparsity, Structure, Scaling and Stability in Computational Linear Algebra - Textbook from the IX School of Computer Science, held on July 24-31 of 1994 at Recife, Brazil. Esparsidade, Estrutura, Escalamento e Estabilidade em Algebra Linear Computacional - Livro texto da IX Escola de Computacao, realizada nos dias 24 a 31 de Julho de 1994 em Recife, Brasil. This textbook is written in Portuguese Language.

Stern, Julio M

2011-01-01

69

Accuracy of EMS Trauma Transport Destination Plans in North Carolina.  

PubMed

Abstract Objective. Planning for time-sensitive injury may allow emergency medical services (EMS) systems to more accurately triage patients meeting accepted criteria to facilities most capable of providing life-saving treatment. In 2010, North Carolina (NC) implemented statewide Trauma Triage and Destination Plans (TTDPs) in all 100 of North Carolina's county-defined EMS systems. Each system was responsible for identifying the specific destination hospitals with appropriate resources to treat trauma patients. We sought to characterize the accuracy of their hospital designations. Methods. In this cross-sectional study, we collected TTDPs for each county-defined EMS system, including their assigned hospital capabilities (i.e., trauma center or community hospital). We conducted a survey with each EMS system to determine how their TTDP was constructed and maintained, as well as with each TTDP-designated hospital to verify their capabilities. We determined the accuracy of the EMS assigned hospital designations by comparing them to the hospital's reported capabilities. Results. The 100 NC EMS systems provided 380 designations for 112 hospitals. TTDPs were created by EMS administrators and medical directors, with only 55% of EMS systems engaging a hospital representative in the plan creation. Compared to the actual hospital capabilities, 97% of the EMS TTDP designations were correct. Twelve hospital designations were incorrect and the majority (10) overestimated hospital capabilities. Of the 100 EMS systems, 7 misclassified hospitals in their TTDP. EMS systems that did not verify their local hospitals' capabilities during TTDP development were more likely to incorrectly categorize a hospital's capabilities (p = 0.001). Conclusions. A small number of EMS systems misclassified hospitals in their TTDP, but most plans accurately reflected hospital capabilities. Misclassification occurred more often in systems that did not consult local hospitals prior to developing their TTDP. The potential of the TTDP to improve communication between EMS agencies and the facilities with which they work has not been fully realized. EMS agencies or systems should verify local hospital capabilities when engaging in destination planning efforts. PMID:24878396

Moss, Chailee; Cowden, Christopher S; Atterton, Laurie Meyer; Arasaratnam, Meredith H; Fernandez, Antonio R; Evarts, Jeff S; Barrier, Brian; Lerner, E Brooke; Mann, N Clay; Lohmeier, Chad; Shofer, Frances S; Brice, Jane H

2015-01-01

70

Acceleration of MAP-EM algorithm via over-relaxation.  

PubMed

To improve the convergence rate of the effective maximum a posteriori expectation-maximization (MAP-EM) algorithm in tomographic reconstructions, this study proposes a modified MAP-EM which uses an over-relaxation factor to accelerate image reconstruction. The proposed method, called MAP-AEM, is evaluated and compared with the results for MAP-EM and for an ordered-subset algorithm, in terms of the convergence rate and noise properties. The results show that the proposed method converges numerically much faster than MAP-EM and with a speed that is comparable to that for an ordered-subset type method. The proposed method is effective in accelerating MAP-EM tomographic reconstruction. PMID:25465068

Tsai, Yu-Jung; Huang, Hsuan-Ming; Fang, Yu-Hua Dean; Chang, Shi-Ing; Hsiao, Ing-Tsung

2014-11-15

71

Dor em membros em um servio de reumatologia peditrica Limb pain in a pediatric rheumatology outpatient clinic  

Microsoft Academic Search

Objetivo: Avaliar clnica e laboratorialmente crianas e adolescentes com dor em membros e sua possvel associao com fibromialgia e hipermobilidade articular. Mtodo: Estudo transversal realizado no perodo de janeiro de 2001 a dezembro de 2002, que incluiu 103 crianas e ado- lescentes atendidos no Ambulatrio de Reumatologia Pedi- trica, com queixa de dor em membros. Alm do exame fsico geral,

Cssia Maria; P. L. Barbosa; Luciana Hangai; Maria Teresa Terreri; Cludio Arnaldo Len; Maria Odete; E. Hilrio

72

Estudo comparativo dos parmetros angulares da marcha humana em ambiente aqutico e terrestre em indivduos hgidos adultos jovens  

Microsoft Academic Search

RESUMO H um grande interesse em estudar o movimento humano den- tro da gua, uma vez que o meio j utilizado para treinamento e reabilitao devido s diferentes propriedades mecnicas que ofe- rece. No entanto, h uma carncia de estudos sobre as caracters- ticas biomecnicas do andar em ambiente aqutico. O presente estudo teve como objetivo determinar as variveis

Danieli Isabel Romanovitch Ribas; Vera Lcia Israel; Elisngela Ferretti Manfra; Camila Costa de Arajo

2007-01-01

73

The Post-LBV Supernova 2001em  

NASA Astrophysics Data System (ADS)

The supernova (SN) 2001em in UGC 11794 was classified early as Type Ib/c, i.e., as one arising from a hydrogen-stripped star. As part of a radio survey with the Very Large Array of SNe Ib/c at late times (Stockdale et al. 2003, BAAS, 35, 1346), SN 2001em was detected as a highly luminous radio source 2 years after explosion. The SN was also subsequently discovered with Chandra to be a very luminous X-ray source. The properties of both the radio and X-ray emission are more characteristic of the Type II-narrow (IIn) SNe, where the SN shock is interacting with dense, massive circumstellar matter, resulting in bright radio synchrotron emission and thermal bremsstrahlung from the interaction region. In fact, SN 2001em has shown to have spectroscopically transformed to a SN IIn. The premise that this might indicate an off-axis gamma-ray burst has been presented (Granot & Ramirez-Ruiz 2004, ApJ, 609, L9) and later, rather convincingly, refuted (e.g., Schinzel et al. 2009, ApJ, 691, 1380). Chugai & Chevalier (2006, ApJ, 641, 1051) have interpreted the spectral transformation and radio/X-ray emission as the SN shock overtaking the detached hydrogen envelope of the progenitor star, which was shed in a superwind episode many years prior to explosion. Chevalier (2007, RMxAC, 30, 41) has further pointed to the required mass-loss rate in the event being equivalent to what would occur in the eruption of a luminous blue variable (LBV). The optical (ground-based and HST) and radio/X-ray data, together with mid-infrared Spitzer observations, tend to support this scenario of a very massive star that experienced a powerful LBV outburst prior to explosion. Such an event may not be unique, with possible parallels in the cases of SNe 2005bf and 2006jc, and may provide valuable new information about massive stellar evolution.

Van Dyk, Schuyler D.; Chornock, R.; Filippenko, A. V.; Foley, R. J.; Lewin, W. H. G.; Li, W.; Panagia, N.; Pooley, D.; Stockdale, C. J.; Weiler, K. W.

2009-12-01

74

Electromagnetic optimization of EMS-MAGLEV systems  

SciTech Connect

In EMS-MAGLEV high-speed transport systems, devices for propulsion, levitation and contactless on-board electric power transfer are combined in a single electromagnetic structure. The strong coupling among the windings affects the performance of each device and requires the utilization of numerical codes. The paper describes an overall optimization procedure, based on a suitable mathematical model of the system, which takes into account several items of the system performance. The parameters of the model are calculated by an automated sequence of FEM analyses of the configuration. Both the linear generator output characteristics and the propulsion force ripple are improved applying the procedure to a reference configuration. The results are compared with the results obtained by a sequence of partial optimizations operating separately on two different subsets of the geometric parameters.

Andriollo, M.; Martinelli, G.; Morini, A.; Tortella, A. [Univ. of Padova (Italy). Dept. of Electrical Engineering] [Univ. of Padova (Italy). Dept. of Electrical Engineering

1998-07-01

75

DOE EM industry programs robotics development  

SciTech Connect

The Office of Science and Technology (OST) manages an aggressive program for RD&D, as well as testing and evaluation for the U.S. Department of Energy`s (DOE) Environmental Management (EM) organization. The goal is to develop new and improved environmental restoration and waste management technologies to clean up the inventory of the DOE weapons complex faster, safer, and cheaper than is possible with currently available technologies. OST has organized technology management activities along focus teams for each major problem area. There are currently five focus areas: decontamination and decommissioning, tanks, subsurface contaminants, mixed waste, and plutonium. In addition, OST is pursuing research and development (R&D) that cuts across these focus areas by having applications in two or more focus areas. Currently, there are three cross-cutting programs: the robotics technology development; characterization, monitoring, and sensor technologies; and efficient separations and processing.

Staubly, R.; Kothari, V. [Dept. of Energy, Morgantown, WV (United States)

1997-12-01

76

Elevated ethyl methanesulfonate (EMS) in nelfinavir mesylate (Viracept, Roche): overview.  

PubMed

Roche's protease inhibitor nelfinavir mesylate (Viracept) produced between March 2007-June 2007 was found to contain elevated levels of ethyl methanesulfonate (EMS), a known mutagen (alkylator) - leading to a global recall of the drug. EMS levels in a daily dose (2,500 mg Viracept/day) were predicted not to exceed a dose of approximately 2.75 mg/day (approximately 0.055 mg/kg/day based on 50 kg patient). As existing toxicology data on EMS did not permit an adequate patient risk assessment, a comprehensive animal toxicology evaluation of EMS was conducted. General toxicity of EMS was investigated in rats over 28 days. Two studies for DNA damage were performed in mice; chromosomal damage was assessed using a micronucleus assay and gene mutations were detected using the MutaMouse transgenic model. In addition, experiments designed to extrapolate animal exposure to humans were undertaken. A general toxicity study showed that the toxicity of EMS occurred only at doses >or= 60 mg/kg/day, which is far above that received by patients. Studies for chromosomal damage and mutations in mice demonstrated a clear threshold effect with EMS at 25 mg/kg/day, under chronic dosing conditions. Exposure analysis (Cmax) demonstrated that approximately 370-fold higher levels of EMS than that ingested by patients, are needed to saturate known, highly conserved, error-free, mammalian DNA repair mechanisms for alkylation. In summary, animal studies suggested that patients who took nelfinavir mesylate with elevated levels of EMS are at no increased risk for carcinogenicity or teratogenicity over their background risk, since mutations are prerequisites for such downstream events. These findings are potentially relevant to >40 marketed drugs that are mesylate salts. PMID:19660105

Pozniak, Anton; Mller, Lutz; Salgo, Miklos; Jones, Judith K; Larson, Peter; Tweats, David

2009-01-01

77

Queda dos homicdios em So Paulo, Brasil: uma anlise descritiva  

PubMed Central

Objetivo Descrever a evoluo da mortalidade por homicdios no Municpio de So Paulo segundo tipo de arma, sexo, raa ou cor, idade e reas de excluso/incluso social entre 1996 e 2008. Mtodos Estudo ecolgico de srie temporal. Os dados sobre bitos ocorridos no Municpio foram coletados da base de dados do Programa de Aprimoramento das Informaes sobre Mortalidade, seguindo a Classificao Internacional de Doenas, Dcima Reviso (CID-10). Foram calculadas as taxas de mortalidade por homicdio (TMH) para a populao total, por sexo, raa ou cor, faixa etria, tipo de arma e rea de excluso/incluso social. As TMH foram padronizadas por idade pelo mtodo direto. Foram calculados os percentuais de variao no perodo estudado. Para as reas de excluso/incluso social foram calculados os riscos relativos de morte por homicdio. Resultados As TMH apresentaram queda de 73,7% entre 2001 e 2008. Foi observada reduo da TMH em todos os grupos analisados, mais pronunciada em homens (?74,5%), jovens de 15 a 24 anos (?78,0%) e moradores de reas de excluso social extrema (?79,3%). A reduo ocorreu, sobretudo, nos homicdios cometidos com armas de fogo (?74,1%). O risco relativo de morte por homicdio nas reas de excluso extrema (tendo como referncia reas com algum grau de excluso social) foi de 2,77 em 1996, 3,9 em 2001 e 2,13 em 2008. Nas reas de alta excluso social, o risco relativo foi de 2,07 em 1996 e 1,96 em 2008. Concluses Para compreender a reduo dos homicdios no Municpio, importante considerar macrodeterminantes que atingem todo o Municpio e todos os subgrupos populacionais e microdeterminantes que atuam localmente, influenciando de forma diferenciada os homicdios com armas de fogo e os homicdios na populao jovem, no sexo masculino e em residentes em reas de alta excluso social. PMID:21390415

Peres, Maria Fernanda Tourinho; Vicentin, Diego; Nery, Marcelo Batista; de Lima, Renato Srgio; de Souza, Edinilsa Ramos; Cerda, Magdalena; Cardia, Nancy; Adorno, e Srgio

2012-01-01

78

Evaluation of Fracture Azimuth by EM Wave and Elastic Wave  

NASA Astrophysics Data System (ADS)

Fracture system plays an important role in the development of underground energy, for example enhanced geothermal system (EGS), oil shale and shale gas, etc. Therefore, it becomes more and more important to detect and evaluate the fracture system. Geophysical prospecting is an useful method to evaluate the characteristics of the subsurface fractures. Currently, micro-seismology, multi-wave seismic exploration, and electromagnetic (EM) survey are reported to be used for the purpose. We are studying a method using both elastic wave and EM wave to detect and evaluate the fracture azimuth in laboratory. First, we build a 3D horizontal transverse isotropy (HTI) model, shown in the figure 1, by dry parallel fractures system, which was constructed by plexiglass plates and papers. Then, we used the ultrasonic system to obtain reflected S-wave data. Depending on the shear wave splitting, we evaluated the fracture azimuth by the algorithm of Pearson correlation coefficient. In addition, we used the full Polarimetric ultra wide band electromagnetic (FP-UWB-EM) wave System, shown in the figure 2, to obtain full polarimetric reflected EM-wave data. Depending on the rotation of the EM wave polarimetry, we evaluated the fracture azimuth by the the ration between maximum amplitude of co-polarimetric EM wave and maximum amplitude of cross-polarimetric EM wave. Finally, we used both EM-wave data and S-wave data to evaluate the fracture azimuth by the method of cross plot and statistical mathematics. To sum up, we found that FP-UWB-EM wave can be used to evaluated the fracture azimuth and is more accurate than ultrasound wave. Also joint evaluation using both data could improve the precision.

Feng, X.; Wang, Q.; Liu, C.; Lu, Q.; Zeng, Z.; Liang, W.; Yu, Y.; Ren, Q.

2013-12-01

79

Theory of EM monitoring of sea bottom geothermal areas  

NASA Astrophysics Data System (ADS)

Monitoring of geophysical conditions of marine sedimentary basins is necessary for predicting seismic events and for adaptation of geothermal technologies for seismically active (as a rule) sea bottom geothermal areas. These conditions are characterized by seismo-hydro-electromagnetic (EM) geophysical field interaction in the presence of gravity. Based on the main physical principles, geophysical and petrophysical data, we formulate a mathematical model of seismo-hydro-EM interaction in a basin of a marginal sea and calculate the transformation of a seismic excitation in the upper mantle under the central part of the sea of Japan into the low-frequency (0.1 to 10 Hz) EM signals at the top of the sea bottom sedimentary layer, at the sea surface and in the atmosphere up to the lower boundary of the ionosphere. Physics of the EM generation and propagation process is shown including: generation of EM waves in the upper mantle layer M by a seismic wave from under M, spatial modulation of diffusive EM waves by a seismic wave, stopping of the EM wave arrived (before the seismic P wave) from the upper mantle at the top of the sediments because of the high electric conductivity of seawater (3.5 S/m), immediate penetration of the EM wave through the seawater thickness after the delayed seismic P wave shock into the sea bottom, and EM emission from the sea surface into the atmosphere. Let us note that the EM signal in the sea bottom sediments is the first measurable signal of a seismic activation of geological structures beneath the seafloor and this signal is protected by seawater from the influence ionosphere disturbances. Amplitude of the computed magnetic signals (300, 200, 50, and 30 pT at the ocean-atmosphere interface and at the height of 10, 30 and 50 km, respectively), their predominant frequency (0.25 Hz), the delay of the seismic P wave in regard to the magnetic signal for the receivers at the shore (20 s), the amplitude of temperature disturbances in sediments (up to 0.02 K), the parameters of the long (150 km) tsunami wave of a small (up to 20 cm) amplitude far from the shore and other values that characterize the seismo-hydro-EM process are of the orders observed. Recommendations for the EM monitoring of dynamic processes beneath seafloor geothermal areas are given.

Ershov, Sergey; Mikhaylovskaya, Irina; Novik, Oleg

2006-04-01

80

UNIVERSIDADE DE BRASLIA PROGRAMA DE PS-GRADUAO EM COMUNICAO  

E-print Network

Experiência profissional em comunicação 5 Produção científica na área de comunicação (artigos, livros e capítulos) 10 Produção científica em outras áreas de conhecimento (artigos, livros e capítulos) 5 (artigos, livros e 10 #12;3 capítulos) Produção científica em outras áreas de conhecimento (artigos, livros

Maier, Rudolf Richard

81

Environmental Education and Development Division (EM-522). Annual report, Fiscal year 1993  

SciTech Connect

The Environmental Education and Development Division (EM-522) is one of three divisions within the Office of Technology Integration and Environmental Education and Development (EM-52) in Environmental Restoration and Waste Management`s (EM`s) Office of Technology Development (EM-50). The primary design criterion for EM-522 education activities is directly related to meeting EM`s goal of environmental compliance on an accelerated basis and cleanup of the 1989 inventory of inactive sites and facilities by the year 2019. Therefore, EM-522`s efforts are directed specifically toward stimulating knowledge and capabilities to achieve the goals of EM while contributing to DOE`s overall goal of increasing scientific, mathematical, and technical literacy and competency. This report discusses fiscal year 1993 activities.

Not Available

1993-12-31

82

Truncated and constrained helical analogs of antimicrobial esculentin-2EM.  

PubMed

Esculentin-2EM is a 37-residue, cationic, amphipathic, ?-helical antimicrobial peptide isolated from a Korean frog, Glandirama emeljanovi. Many studies revealed that truncation of this peptide results in substantial decreases in its antimicrobial activity. Lee and his colleagues have recently reported that a 23-residue esculentin-2EM analog containing a tryptophanyl substitution at position 16 showed a significant recovery of the antimicrobial activity of the parent peptide. Here we report a new series of 15-residue esculentin-2EM analogs which are constrained into an ?-helical conformation via an oct-4-enyl cross-link. The resulting 'stapled' derivatives displayed remarkable increases not only in antimicrobial activity but also in helical content and protease resistance compared to Lee's original 23-residue esculentin-2EM analog. The preliminary data obtained in this work strongly supports the potential of our strategy for the development of a new class of peptide antibiotics. PMID:24211019

Pham, Thanh Kim; Kim, Do-Hee; Lee, Bong-Jin; Kim, Young-Woo

2013-12-15

83

Gentica de populaes e relaes de parentesco em Ciconiiformes (Aves).  

E-print Network

??Estudos de gentica de populaes e de parentesco gentico foram desenvolvidos em colhereiro (Platalea ajaja), cabea-seca (Mycteria americana) e gara-branca-grande (Ardea alba egretta), de colnias (more)

Carolina Isabel Mio

2010-01-01

84

Structure of Matter, Forces, EM Waves, Spectroscopy, Doppler Effect  

NSDL National Science Digital Library

These supplemental class notes cover the basic properties of matter, the nature of forces, the electromagnetic spectrum, and how astronomers exploit the properties of the EM spectrum to deduce the physical nature of distant objects.

O'Connell, Robert

2005-06-28

85

E.M. and Hadronic Shower Simulation with FLUKA  

SciTech Connect

A description of the main features of e.m. and hadronic shower simulation models used in the FLUKA code is summarized and some recent applications are discussed. The general status of the FLUKA project is also reported.

Battistoni, G.; Fasso, A.; Ferrari, A.; Ranft, J.; Rubbia, A.; Sala, P.R.; /INFN, Milan /SLAC /CERN /Siegen U. /Zurich, ETH

2005-10-03

86

NASA EM Followup of LIGO-Virgo Candidate Events  

NASA Technical Reports Server (NTRS)

We present a strategy for a follow-up of LIGO-Virgo candidate events using offline survey data from several NASA high-energy photon instruments aboard RXTE, Swift, and Fermi. Time and sky-location information provided by the GW trigger allows for a targeted search for prompt and afterglow EM signals. In doing so, we expect to be sensitive to signals which are too weak to be publicly reported as astrophysical EM events.

Blackburn, Lindy L.

2011-01-01

87

EM Telemetry Tool for Deep Well Drilling Applications  

SciTech Connect

This final report discusses the successful development and testing of a deep operational electromagnetic (EM) telemetry system, produced under a cooperative agreement with the United States Department of Energy's National Energy Technology Laboratory. This new electromagnetic telemetry system provides a wireless communication link between sensors deployed deep within oil and gas wells and data acquisition equipment located on the earth's surface. EM based wireless telemetry is a highly appropriate technology for oil and gas exploration in that it avoids the need for thousands of feet of wired connections. In order to achieve the project performance objectives, significant improvements over existing EM telemetry systems were made. These improvements included the development of new technologies that have improved the reliability of the communications link while extending operational depth. A key element of the new design is the incorporation of a data-fusion methodology which enhances the communication receiver's ability to extract very weak signals from large amounts of ambient environmental noise. This innovative data-fusion receiver based system adapts advanced technologies, not normally associated with low-frequency communications, and makes them work within the harsh drilling environments associated with the energy exploration market. Every element of a traditional EM telemetry system design, from power efficiency to reliability, has been addressed. The data fusion based EM telemetry system developed during this project is anticipated to provide an EM tool capability that will impact both onshore and offshore oil and gas exploration operations, for conventional and underbalanced drilling applications.

Jeffrey M. Gabelmann

2005-11-15

88

Evaluation of Use of Recombinant Em18 and Affinity-Purified Em18 for Serological Differentiation of Alveolar Echinococcosis from Cystic Echinococcosis and Other Parasitic Infections  

Microsoft Academic Search

To further evaluate recombinant Em18 antigen (rEm18) for immunodiagnosis of human alveolar echino- coccosis, 208 serum samples were examined by enzyme-linked immunosorbent assay (ELISA). To compara- tively assess the results of rEm18-ELISA, ELISA and immunoblot analysis with two affinity-purified native antigens were also performed with 45 selected serum samples. The results indicate that rEm18 is highly useful for serodiagnosis.

Ning Xiao; Wulamu Mamuti; Hiroshi Yamasaki; Yasuhito Sako; Minoru Nakao; Kazuhiro Nakaya; Bruno Gottstein; Peter M. Schantz; Marshall W. Lightowlers; Philip S. Craig; Akira Ito

2003-01-01

89

Isolamento de Salmonella spp. em pombos (Columba livia) no Distrito Federal : aspecto de relevncia ao sistema de vigilncia em sade.  

E-print Network

??Dissertao (mestrado)Universidade de Braslia, Faculdade de Agronomia e Medicina Veterinria, Programa de Ps-Graduao em Sade Animal, 2014. A domesticao de pombos da espcie Columba livia, (more)

Santos, Ivanildo de Oliveira Correia

2014-01-01

90

DOE EM industry programs robotics development  

SciTech Connect

The Office of Science and Technology (OST) manages an aggressive program for RD and D, as well as testing and evaluation for the Department of Energy`s (DOE`s) Environmental Management (EM) organization. The goal is to develop new and improved environmental restoration and waste management technologies to clean up the inventory of the DOE weapons complex faster, safer, and cheaper than is possible with currently available technologies. Robotic systems reduce worker exposure to the absolute minimum, while providing proven, cost-effective, and, for some applications, the only acceptable technique for addressing challenging problems. Development of robotic systems for remote operations occurs in three main categories: tank waste characterization and retrieval; decontamination and dismantlement; and characterization, mapping, and inspection systems. In addition, the Federal Energy Technology Center (FETC) has some other projects which fall under the heading of supporting R and D. The central objective of all FETC robotic projects is to make robotic systems more attractive by reducing costs and health risks associated with the deployment of robotic technologies in the cleanup of the nuclear weapons complex. This will be accomplished through development of robots that are cheaper, faster, safer, and more reliable, as well as more straightforward to modify/adapt and more intuitive to operate with autonomous capabilities and intelligent controls that prevent accidents and optimize task execution.

Staubly, R.; Kothari, V.

1998-12-31

91

Image segmentation by EM-based adaptive pulse coupled neural networks in brain magnetic resonance imaging.  

PubMed

We propose an automatic hybrid image segmentation model that integrates the statistical expectation maximization (EM) model and the spatial pulse coupled neural network (PCNN) for brain magnetic resonance imaging (MRI) segmentation. In addition, an adaptive mechanism is developed to fine tune the PCNN parameters. The EM model serves two functions: evaluation of the PCNN image segmentation and adaptive adjustment of the PCNN parameters for optimal segmentation. To evaluate the performance of the adaptive EM-PCNN, we use it to segment MR brain image into gray matter (GM), white matter (WM) and cerebrospinal fluid (CSF). The performance of the adaptive EM-PCNN is compared with that of the non-adaptive EM-PCNN, EM, and Bias Corrected Fuzzy C-Means (BCFCM) algorithms. The result is four sets of boundaries for the GM and the brain parenchyma (GM+WM), the two regions of most interest in medical research and clinical applications. Each set of boundaries is compared with the golden standard to evaluate the segmentation performance. The adaptive EM-PCNN significantly outperforms the non-adaptive EM-PCNN, EM, and BCFCM algorithms in gray mater segmentation. In brain parenchyma segmentation, the adaptive EM-PCNN significantly outperforms the BCFCM only. However, the adaptive EM-PCNN is better than the non-adaptive EM-PCNN and EM on average. We conclude that of the three approaches, the adaptive EM-PCNN yields the best results for gray matter and brain parenchyma segmentation. PMID:20042313

Fu, J C; Chen, C C; Chai, J W; Wong, S T C; Li, I C

2010-06-01

92

FitEM2EM--tools for low resolution study of macromolecular assembly and dynamics.  

PubMed

Studies of the structure and dynamics of macromolecular assemblies often involve comparison of low resolution models obtained using different techniques such as electron microscopy or atomic force microscopy. We present new computational tools for comparing (matching) and docking of low resolution structures, based on shape complementarity. The matched or docked objects are represented by three dimensional grids where the value of each grid point depends on its position with regard to the interior, surface or exterior of the object. The grids are correlated using fast Fourier transformations producing either matches of related objects or docking models depending on the details of the grid representations. The procedures incorporate thickening and smoothing of the surfaces of the objects which effectively compensates for differences in the resolution of the matched/docked objects, circumventing the need for resolution modification. The presented matching tool FitEM2EMin successfully fitted electron microscopy structures obtained at different resolutions, different conformers of the same structure and partial structures, ranking correct matches at the top in every case. The differences between the grid representations of the matched objects can be used to study conformation differences or to characterize the size and shape of substructures. The presented low-to-low docking tool FitEM2EMout ranked the expected models at the top. PMID:18974836

Frankenstein, Ziv; Sperling, Joseph; Sperling, Ruth; Eisenstein, Miriam

2008-01-01

93

Degradation of Benzodiazepines after 120 Days of EMS Deployment  

PubMed Central

Introduction EMS treatment of status epilepticus improves outcomes, but the benzodiazepine best suited for EMS use is unclear, given potential high environmental temperature exposures. Objective To describe the degradation of diazepam, lorazepam, and midazolam as a function of temperature exposure and time over 120 days of storage on active EMS units. Methods Study boxes containing vials of diazepam, lorazepam, and midazolam were distributed to 4 active EMS units in each of 2 EMS systems in the southwestern United States during MayAugust 2011. The boxes logged temperature every minute and were stored in EMS units per local agency policy. Two vials of each drug were removed from each box at 30-day intervals and underwent high-performance liquid chromatography to determine drug concentration. Concentration was analyzed as mean (and 95%CI) percent of initial labeled concentration as a function of time and mean kinetic temperature (MKT). Results 192 samples were collected (2 samples of each drug from each of 4 units per city at 4 time-points). After 120 days, the mean relative concentration (95%CI) of diazepam was 97.0% (95.798.2%) and of midazolam was 99.0% (97.7100.2%). Lorazepam experienced modest degradation by 60 days (95.6% [91.699.5%]) and substantial degradation at 90 days (90.3% [85.2-95.4%]) and 120 days (86.5% [80.792.3%]). Mean MKT was 31.6C (95%CI 27.136.1). Increasing MKT was associated with greater degradation of lorazepam, but not midazolam or diazepam. Conclusions Midazolam and diazepam experienced minimal degradation throughout 120 days of EMS deployment in high-heat environments. Lorazepam experienced significant degradation over 120 days and appeared especially sensitive to higher MKT exposure. PMID:24548058

McMullan, Jason T.; Jones, Elizabeth; Barnhart, Bruce; Denninghoff, Kurt; Spaite, Daniel; Zaleski, Erin; Silbergleit, Robert

2014-01-01

94

ecaloma P ecaloma Produzido por Fibras de Aa: Relato de Dois Casos roduzido por Fibras de Aa: Relato de Dois Casos roduzido por Fibras de Aa: Relato de Dois Casos roduzido por Fibras de Aa: Relato de Dois Casos roduzido por Fibras de Aa: Relato de Dois Casos Fecal Impactation Produced by Aa: Two Case Reports  

Microsoft Academic Search

O objetivo do presente relato mostrar que o fecaloma produzido pelas fibras de aa (Euterpe oleracea), consumido in natura, requer conduta teraputica diferente dos fecalomas de outra natureza, porque exige esvaziamento manual sob anestesia, e que acomete pessoas pobres da Amaznia brasileira. Da o interesse em descrever dois casos de fecaloma produzido por fibras de aa a partir da

Domingos N. Lamaro

2006-01-01

95

Learning when to Hold'em and When to Fold'em: ERS's Budget Hold'em Game Facilitates the Budget Development Process in Memphis  

ERIC Educational Resources Information Center

If your school district is facing a budget issue, it might surprise you to learn that the solution might very well lie in a game of cards. That certainly was the case earlier this year for the city schools of Memphis, Tennessee. The game is called Budget Hold'em, and it was developed by Education Resource Strategies (ERS) of Watertown,

Education Resource Strategies, 2010

2010-01-01

96

EMS Stretcher "Misadventures" in a Large, Urban EMS System: A Descriptive Analysis of Contributing Factors and Resultant Injuries.  

PubMed

Purpose. There is a paucity of data regarding EMS stretcher-operation-related injuries. This study describes and analyzes characteristics associated with undesirable stretcher operations, with or without resultant injury in a large, urban EMS agency. Methods. In the study agency, all stretcher-related "misadventures" are required to be documented, regardless of whether injury results. All stretcher-related reports between July 1, 2009 and June 30, 2010 were queried in retrospective analysis, avoiding Hawthorne effect in stretcher operations. Results. During the year studied, 129,110 patients were transported. 23 stretcher incidents were reported (0.16 per 1,000 transports). No patient injury occurred. Four EMS providers sustained minor injuries. Among contributing aspects, the most common involved operations surrounding the stretcher-ambulance safety latch, 14/23 (60.9%). From a personnel injury prevention perspective, there exists a significant relationship between combative patients and crew injury related to stretcher operation, Fisher's exact test 0.048. Conclusions. In this large, urban EMS system, the incidence of injury related to stretcher operations in the one-year study period is markedly low, with few personnel injuries and no patient injuries incurred. Safety for EMS personnel and patients could be advanced by educational initiatives that highlight specific events and conditions contributing to stretcher-related adverse events. PMID:22606379

Goodloe, Jeffrey M; Crowder, Christopher J; Arthur, Annette O; Thomas, Stephen H

2012-01-01

97

EMS Stretcher Misadventures in a Large, Urban EMS System: A Descriptive Analysis of Contributing Factors and Resultant Injuries  

PubMed Central

Purpose. There is a paucity of data regarding EMS stretcher-operation-related injuries. This study describes and analyzes characteristics associated with undesirable stretcher operations, with or without resultant injury in a large, urban EMS agency. Methods. In the study agency, all stretcher-related misadventures are required to be documented, regardless of whether injury results. All stretcher-related reports between July 1, 2009 and June 30, 2010 were queried in retrospective analysis, avoiding Hawthorne effect in stretcher operations. Results. During the year studied, 129,110 patients were transported. 23 stretcher incidents were reported (0.16 per 1,000 transports). No patient injury occurred. Four EMS providers sustained minor injuries. Among contributing aspects, the most common involved operations surrounding the stretcher-ambulance safety latch, 14/23 (60.9%). From a personnel injury prevention perspective, there exists a significant relationship between combative patients and crew injury related to stretcher operation, Fisher's exact test 0.048. Conclusions. In this large, urban EMS system, the incidence of injury related to stretcher operations in the one-year study period is markedly low, with few personnel injuries and no patient injuries incurred. Safety for EMS personnel and patients could be advanced by educational initiatives that highlight specific events and conditions contributing to stretcher-related adverse events. PMID:22606379

Goodloe, Jeffrey M.; Crowder, Christopher J.; Arthur, Annette O.; Thomas, Stephen H.

2012-01-01

98

Analyses of Subnanometer Resolution Cryo-EM Density Maps  

PubMed Central

Today, electron cryomicroscopy (cryo-EM) can routinely achieve subnanometer resolutions of complex macromolecular assemblies. From a density map, one can extract key structural and functional information using a variety of computational analysis tools. At subnanometer resolution, these tools make it possible to isolate individual subunits, identify secondary structures, and accurately fit atomic models. With several cryo-EM studies achieving resolutions beyond 5 , computational modeling and feature recognition tools have been employed to construct backbone and atomic models of the protein components directly from a density map. In this chapter, we describe several common classes of computational tools that can be used to analyze and model subnanometer resolution reconstructions from cryo-EM. A general protocol for analyzing subnanometer resolution density maps is presented along with a full description of steps used in analyzing the 4.3 resolution structure of Mm-cpn. PMID:20888467

Baker, Matthew L.; Baker, Mariah R.; Hryc, Corey F.; DiMaio, Frank

2011-01-01

99

Residual Symmetries in the Presence of an EM Background  

E-print Network

The symmetry algebra of a QFT in the presence of an external EM background (named "residual symmetry") is investigated within a Lie-algebraic, model independent scheme. Some results previously encountered in the literature are here extended. In particular we compute the symmetry algebra for a constant EM background in D=3 and D=4 dimensions. In D= 3 dimensions the residual symmetry algebra is isomorphic to $u(1)\\oplus {\\cal P}_c(2)$, with ${\\cal P}_c(2)$ the centrally extended 2-dimensional Poincar\\'e algebra. In D=4 dimension the generic residual symmetry algebra is given by a seven-dimensional solvable Lie algebra which is explicitly computed. Residual symmetry algebras are also computed for specific non-constant EM backgrounds.

H. L. Carrion; M. Rojas; F. Toppan

2002-05-23

100

Convergence Results for the EM Approach to Mixtures of Experts Architectures  

E-print Network

The Expectation-Maximization (EM) algorithm is an iterative approach to maximum likelihood parameter estimation. Jordan and Jacobs (1993) recently proposed an EM algorithm for the mixture of experts architecture of ...

Jordan, Michael I.

1993-11-01

101

Estudo de apomixia em diferentes nveis de ploidia no Manihot spp.  

E-print Network

??Dissertao (mestrado)Universidade de Braslia, Instituto de Cincias Biolgicas, Departamento de Botnica, Programa de Ps-Graduao em Botnica, 2011. A apomixia em Manihot vem sendo estudada pelo (more)

Ferreira, Adalgisa Maria Chaib

2011-01-01

102

EM-31 Alternative and Enhanced Chemical Cleaning Program  

SciTech Connect

King's introduction to his presentation made 5 important points: 1) Numerous SRS tanks scheduled for closure (contract commitments); 2) Cannot remove all sludge by mechanical means due to obstructions; 3) Chemical removal technology needed (likely oxalic acid); 4) Post - dissolution neutralization required prior to transfer to compliant tanks; 5) Sodium oxalate salts precipitate on neutralization and have negative downstream impacts. There were three SRS chemical cleaning programs in 2010: Baseline: 8wt percent OA batch contact, ECC: 1-3 wt. percent OA with oxalate destruction, and the Alternative/Enhanced Chemical Cleaning (EM-31). This talk is on the EM-31 program.

King, Bill (SRNL) [SRNL

2010-11-01

103

ARTIGO INTERNET Jogos Srios em debate no IST  

E-print Network

ARTIGO INTERNET «Jogos Sérios» em debate no IST in http://sol.sapo.pt/ Data: 2011-9-15 Link: http://sol.sapo.pt/inicio/Tecn ... «Jogos Sérios» em debate no IST O Instituto Superior Técnico (IST) vai ser o palco da II Conferência Internacional sobre aplicações e desenvolvimento de «Jogos Sérios» A conferência terá lugar nos dias 19 e 20 de

Instituto de Sistemas e Robotica

104

MESTRADO EM MICROBIOLOGIA EPIDEMIOLOGIA DE DOENAS TRANSMISSVEIS Faculdade de Cincias  

E-print Network

transmissíveis (DTs) e agentes etiológicos. História natural da infecção no hospedeiro. Noção de R0. Imunidade de grupo. Construção de modelos matemáticos para DTs: em equações às diferenças. Principais parâmetros dos modelos de DTs e sua estimação. Modelos para DTs formalizados em equações diferenciais. Padrões dinâmicos

Instituto de Sistemas e Robotica

105

Erros comuns de ingls em artigos cientficos escritos por pessoas de lngua portuguesa  

E-print Network

Erros comuns de inglês em artigos científicos escritos por pessoas de língua portuguesa Siang Wun comuns de inglês em artigos científicos escritos por pessoa #12;Introdução Baseado em experiência acumulada ao longo dos anos, ao revisar artigos escritos em inglês principalmente por pessoas de língua

Song, Siang Wun

106

Study on the Temperature Limitation of the Injecting Power to a Pyramidal EM-Wave Absorber  

Microsoft Academic Search

In this paper, first the temperature distribution of the pyramidal EM-wave absorber is calculated in the coupled method. Next, the injected power to the EM-wave absorber is changed to estimate the maximum power density that the EM-wave absorber can resist. As a result, the limitation of the injecting power density to a pyramidal EM-wave absorber is achievable.

Tetsuhiro Sasagawa; Shinya Watanabe; Osamu Hashimoto; Toshifumi Saito; Hiroshi Kurihara

2009-01-01

107

Quasi-Monte Carlo Sampling to improve the Efficiency of Monte Carlo EM  

E-print Network

Quasi-Monte Carlo Sampling to improve the Efficiency of Monte Carlo EM Wolfgang Jank Department@rhsmith.umd.edu November 17, 2003 Abstract In this paper we investigate an efficient implementation of the Monte Carlo EM al- gorithm based on Quasi-Monte Carlo sampling. The Monte Carlo EM algorithm is a stochastic version

Jank, Wolfgang

108

EMS Mutagenesis 101 From: Methods in Molecular Biology, vol. 323: Arabidopsis Protocols, Second Edition  

E-print Network

-genomic era, the use of reverse genetic approaches to understanding the role of genes in growth of EMS mutagenesis for the molecular genetic model plant Arabidopsis thaliana. Key Words: EMS; chemical produces T/A to G/C transversion and A/T to G/C transitions (1,3,4). At a low frequency, EMS generates G

Schumaker, Karen

109

Reliable prediction of EM radiation from a PCB at the design stage of electronic equipment  

Microsoft Academic Search

This paper presents a composite computer-aided design (CCAD) package for prediction of electromagnetic (EM) radiation from a printed circuit board (PCB) at the design stage of equipment. Such a CCAD package has been developed by combining an EM computation tool such as numerical electromagnetic code (NEC)-2, with other circuit design packages (CDPs). The method of prediction of EM radiation using

P. K. Saha; Jim Dowling

1998-01-01

110

Sensibilidade antimicrobiana de bactrias aerbicas isoladas de lceras leishmaniticas, em Corte de Pedra, BA  

Microsoft Academic Search

RESUMO Um estudo prospectivo, sobre a sensibilidade antimicrobiana da flora bacteriana em lceras cutneas leishmaniticas, foi realizado em pacientes portadores de leishmaniose tegumentar, em Corte de Pedra, Bahia. Foram estudados 84 pacientes, principalmente adolescentes e adultos dedicados lavoura, apresentando leso cutnea nica. Staphylococcus aureus predominou (83%) nas culturas, sendo sensvel maioria dos antibiticos testados. Flora bacteriana mista esteve

Luis Angel Vera; Jefferson Lessa Soares de Macedo; Isolina Allen Ciuffo; Conceio Guerra Santos; Joo Barberino Santos

2006-01-01

111

Convergence results for the EM approach to mixtures of experts architectures  

Microsoft Academic Search

The Expectation-Maximization (EM) algorithm is an iterative approach to maximum likelihood parameter estimation. Jordan and Jacobs recently proposed an EM algorithm for the mixture of experts architecture of Jacobs, Jordan, Nowlan and Hinton (1991) and the hierarchical mixture of experts architecture of Jordan and Jacobs (1992). They showed empirically that the EM algorithm for these architectures yields significantly faster convergence

Michael I. Jordan; Lei Xu

1995-01-01

112

Airborne EM for geothermal and hydrogeological mapping  

NASA Astrophysics Data System (ADS)

Within the "VIGOR" project, aimed at assessing the geothermal potential of four regions in southern Italy, Airborne EM data have been acquired, modeled and interpreted. The system deployed was SkyTEM, a time-domain helicopter electromagnetic system designed for hydrogeophysical, environmental and mineral investigations. The AEM data provide, after data acquisition, analysis, processing, and modeling, a distribution volume of electrical resistivity, spanning an investigation depth from ground surface of few hundred meters, depending on resistivity condition. Resistivity is an important physical parameter for geothermal investigation, since it proved to be very effective in mapping anomalies due to hydrothermal fluid circulation, which usually has high salt content and produces clayey alteration minerals. Since the project required, among other issues, to define geothermal resources at shallow level, it was decided to perform a test with an airborne electromagnetic geophysical survey, to verify the advantages offered by the system in covering large areas in a short time. The geophysical survey was carried out in Sicily, Italy, in late 2011, over two test sites named "Termini" and "Western Sicily". The two areas were chosen on different basis. "Termini" area is covered by extensive geological surveys, and was going to be investigated also by means of electrical tomography in its northern part. Since geological condition of Sicily, even at shallow depth, is very complex, this area provided a good place for defining the resistivity values of the main geological units outcropping in the region. "Termini" survey has been also an occasion to define relations between resistivity distribution, lithological units and thermal conductivity. The "Western Sicily" area cover the main thermal manifestations of western Sicily, and the research target was to establish whether they are characterized by common hydrogeological or tectonic features that could be mapped by resistivity. SkyTEM data have been acquired in a series of flight lines and were then processed and inverted. In the "Termini" area the flight line spacing had 150 m separation. In the "Western Sicily" area two different line spacing were used: the 1 km spacing was used for the regional mapping, whereas for infill areas, around the main hydrothermal springs, the flight lines had 100 m spacing. The total number of flight line was 4580 km, and the explored surface was in excess of 2000 km2. After acquisition, data were processed to eliminate coupling with infrastructures, and noise. Inversions was then carried out using the quasi 3-D Spatially Constrained Inversion. The obtained resistivity volume has then been the base for a detailed lithological and geothermal interpretation. Lithological and geological maps were used to constrain surface condition and to understand the resistivity ranges of the different lithological units. On the base of resistivity values, lithological units were combined to establish the main litho-resistive units, then modeled at depth, down to achievable investigation depth. This detailed interpretative modeling was also the occasion of recognizing resistivity anomalies within carbonate units, which may possibly represent hydrogeological or hydrothermal bodies. The litho-resitive 3D model is now under investigation to verify how it can represent a viable way to image thermal conductivity variations at depth.

Menghini, A.; Manzella, A.; Viezzoli, A.; Montanari, D.; Maggi, S.

2012-12-01

113

UNIVERSIDADE DE BRASLIA PROGRAMA DE PS-GRADUAO EM INFORMTICA  

E-print Network

Computação: 16, sendo 2 para candidatos com residência no exterior. 2.3.2 Linha de Pesquisa em Fundamentos e, Algoritmos e Métodos Formais (3 vagas), Processamento de Imagens e Sinais (7 vagas), Redes e Comunicação sem

Lucero, Jorge Carlos

114

UNIVERSIDADE DE BRASLIA PROGRAMA DE PS-GRADUAO EM INFORMTICA  

E-print Network

no exterior. 2.3.2 Linha de Pesquisa em Fundamentos e Métodos de Computação: 15 (quinze), sendo quatro para imagens e sinais (9 vagas), robótica (2 vagas), redes e comunicação sem fio (2 vagas), hardware e sistemas

Maier, Rudolf Richard

115

Sonar-Based Mapping With Mobile Robots Using EM  

Microsoft Academic Search

This paper presents an algorithms for learn- ing occupancy grid maps with mobile robots equipped with range finders, such as sonar sen- sors. Our approach employs the EM algorithm to solve the concurrent mapping and localization problem. To accommodate the spatial nature of range data, it relies on a two-layered representa- tion of maps, where global maps are composed from

Wolfram Burgard; Dieter Fox; Hauke Jans; Christian Matenar; Sebastian Thrun

116

ISSN 0103-9741 Monografias em Cincia da Computao  

E-print Network

&P) activities, such as 3D geomodelling, seismic interpretation, real-time drilling follow-up and correction, offshore structures' design, static and dynamic simulations of these offshore structures, oil pipelines perfuração em tempo real, projeto de estruturas offshore, simulações estáticas e dinâmicas destas estruturas

Barbosa, Alberto

117

Minimum-Distortion Isometric Shape Correspondence Using EM Algorithm  

E-print Network

Minimum-Distortion Isometric Shape Correspondence Using EM Algorithm Yusuf Sahillioglu and Yu¨cel Yemez Abstract--We present a purely isometric method that establishes 3D correspondence between two (nearly) isometric shapes. Our method evenly samples high-curvature vertices from the given mesh

Yemez, Yücel

118

ISSN 0103-9741 Monografias em Cincia da Computao  

E-print Network

into cells from all three germinal layers while multipotent stem cells can generate only closely relatedISSN 0103-9741 Monografias em Ciência da Computação n° 04/09 Automatic Embryonic Stem Cells de Lucena February, 2009 Automatic Embryonic Stem Cells Detection and Counting in Fluorescence

Endler, Markus

119

PS-GRADUAO EM BIOLOGIA DE FUNGOS, ALGAS E PLANTAS  

E-print Network

identificação, sendo Carteira de identidade e CPF (original e fotocópia, ou fotocópia autenticada em cartório de Botânica Campus Universitário ­ Trindade - Florianópolis-SC-Brasil Cx. Postal 476 - CEP 88040

Floeter, Sergio Ricardo

120

A Generalized Partial Credit Model: Application of an EM Algorithm  

Microsoft Academic Search

The partial credit model (PCM) with a varying slope parameter is developed and called the generalized partial credit model (GPCM). The item step parameter of this model is decomposed to a location and a threshold parameter, following Andrich's (1978) rating scale formulation. The EM algorithm for estimating the model parameters is derived. The performance of this generalized model is compared

Eiji Muraki

1992-01-01

121

7 CFR 1945.20 - Making EM loans available.  

Code of Federal Regulations, 2010 CFR

...1945.20 Making EM loans...the actions required by 1945...and other factors which are...Secretary in making determinations...Secretary in making a decision on the requested...consider other factors in accordance...the actions required in...

2010-01-01

122

EM Ground-Wave Propagation over the Curved Lunar Surface  

Microsoft Academic Search

VLF and LF electromagnetic (EM) ground-wave propagation between points on the surface of a smooth lunar sphere which is surrounded by free space or a cold isotropic plasma is investigated. Following Ward's analysis of recent lunar geophysical data, two mathematical models which are most likely to actually exist were chosen as either a cold homogeneous moon or a hot wet

Se Hyun Cho; Ray King

1972-01-01

123

INOVAO E TEORIAS DA FIRMA EM TRS PARADIGMAS  

Microsoft Academic Search

1. INTRODUO Desde os tempos de Alfred Marshall, a teoria econmica procura criar mo- delos que capturem a lgica do comportamento das firmas e dos merca- dos. Os resultados destes esforos no resultaram em um quadro analtico convergente, j que persistem controvrsias importantes acerca do papel das diferentes foras que influenciam o crescimento e os objetivos da firma. Winter (1993),

Paulo Bastos Tigre

124

A MORE COHERENT TOPIC SEQUENCE FOR E&M  

Microsoft Academic Search

The traditional sequence of topics in the E&M portion of the calculus-based introductory physics poses serious conceptual problems for the student. New concepts are introduced extremely rapidly; abstractions are layered on top of abstractions; complex mathematical formalisms are introduced rapidly; and the student is expected to assimilate all of this quickly. To many students it is not even clear what

Ruth Chabay; Bruce Sherwood

125

An EM algorithm for wavelet-based image restoration  

Microsoft Academic Search

Abstract: This paper introduces an expectation--maximization(EM) algorithm for image restoration (deconvolution) based on apenalized likelihood formulated in the wavelet domain. Regularizationis achieved by promoting a reconstruction with low-complexity,expressed in the wavelet coefficients, taking advantage ofthe well known sparsity of wavelet representations. Previous workshave investigated wavelet-based restoration but, except for certainspecial cases, the resulting criteria are solved...

Mrio A. T. Figueiredo; Robert D. Nowak

2003-01-01

126

CONTINUIDADES E DESCONTINUIDADES HISTRICAS EM ANLISE DO DISCURSO  

Microsoft Academic Search

RESUMO: Este artigo apresenta e reflete sobre a trajetria da disciplina lingstica Anlise do Discurso, tomando por base para essa reflexo os conceitos de paradigma e de continuidade vs. descontinuidade histricas, postulados por Khun. Embora a Anlise do Discurso tenha sido fundada na Frana na dcada de 60, com um propsito definido, seu contato com outros povos possibilitou alterao em

Eli Gomes Castanho; Jarbas Vargas Nascimento

127

NUMBER: EM 1.00 (NEW) SECTION: Emergency Management  

E-print Network

NUMBER: EM 1.00 (NEW) SECTION: Emergency Management SUBJECT: Emergency Notification System Policy and taking into account the safety of the community, activate the notification system, unless issuing the Carolina Alert system. a. Emergency Management Coordinator, University of South Carolina Division of Law

Almor, Amit

128

The EM Algorithm for Mixtures of Factor Analyzers Zoubin Ghahramani  

E-print Network

). The algorithm used by these authors for dimensionality reduction is principal components analysis (PCA). 1 #12;z components analyzers to a mixture of factor analyzers. Their learning algorithm consisted of an outer loop of approximate EM to t the mixture components, combined with an inner loop of gradient descent to t each

Ghahramani, Zoubin

129

Cost-Effectiveness Analysis of Helicopter EMS for Trauma Patients  

Microsoft Academic Search

Study objective: To evaluate the cost-effectiveness of helicopter EMS for trauma patients. Methods: We applied a cost-effectiveness analysis from the service provider's perspective to cost and effectiveness estimates. The cost estimates comprise direct operating costs and additional survivors' hospital costs. The effectiveness estimates were calculated with the TRISS methodology from literature sources and data from a cohort of patients transported

Peter A Gearhart; Richard Wuerz; A. Russell Localio

1997-01-01

130

MESTRADO EM MICROBIOLOGIA FBRICAS CELULARES MICROBIANAS Instituto Superior Tcnico  

E-print Network

MESTRADO EM MICROBIOLOGIA FÁBRICAS CELULARES MICROBIANAS ­ Instituto Superior Técnico Objectivos: O microbiologia celular e molecular com as novas abordagens da engenharia metabólica à escala do genoma procariotas e eucariotas: - Estruturas celulares e compartimentalização; - Sistemas de transporte; - Fluxo de

Instituto de Sistemas e Robotica

131

Da Causalidade Indecidibilidade em Cincias da Terra  

Microsoft Academic Search

As Cincias da Terra estudam a historia da Terra mas tambm os processos que a ocorrem. So simultaneamente Cincias Histricas e Dinmicas. O principio das causas actuais, enunciado por Lyell no sculo XIX, procurava explicar o passado a partir do presente e levou ao uniformismo, que suplantou o catastrofismo ainda no sculo XIX. Mas a observao dos processos em profundidade

A. Ribeiro

132

Hierarchical mixtures of experts and the EM algorithm  

Microsoft Academic Search

We present a tree-structured architecture for supervised learning. The statistical model underlying the architecture is a hierarchical mixture model in which both the mixture coefficients and the mixture components are generalized linear models (GLIMs). Learning is treated as a maximum likelihood problem; in particular, we present an expectation-maximization (EM) algorithm for adjusting the parameters of the architecture. We also develop

Michael I. Jordan; Robert A. Jacobs

1993-01-01

133

Hierarchical Mixtures of Experts and the EM Algorithm  

Microsoft Academic Search

We present a tree-structured architecture for supervised learning. The statistical model underlying the architecture is a hierarchical mixture model in which both the mixture coefficients and the mixture components are generalized linear models (GLIM's). Learning is treated as a maximum likelihood problem; in particular, we present an Expectation-Maximization (EM) algorithm for adjusting the parameters of the architecture. We also develop

Michael I. Jordan; Robert A. Jacobs

1994-01-01

134

ISSN 0103-9741 Monografias em Cincia da Computao  

E-print Network

, jogos para telefones celulares podem ser sé- rios candidatos a se tornarem uma forma importante de entretenimento em um futuro próximo. Entretanto, a maioria dos jogos (para computadores, consoles e dispositivos tipo de entretenimento. Embora jogos para telefones celulares pu- dessem atender a muitos usuários com

Endler, Markus

135

COMBINATION OF EM AND DC MEASUREMENTS FOR UPPER CRUSTAL STUDIES  

E-print Network

COMBINATION OF EM AND DC MEASUREMENTS FOR UPPER CRUSTAL STUDIES T. HARINARAYANA National method alone, could possibly be identified by a combination of methods. Further, distortion or error. This review covers the main results of the combination of these methods, giving more emphasis to case

Harinarayana, T.

136

Populao estelar nuclear e extranuclear em galxias Seyfert 2  

NASA Astrophysics Data System (ADS)

A luz das estrelas foi, historicamente, vista por observadores de AGNs como uma poluio inconveniente. Conseqentemente, a informao contida nas caractersticas estelares foi, durante muito tempo, largamente omitida. Nos primeiros estudos, o mtodo empregado para remover esta contaminao estelar foi represent-la por um template de galxia elptica e subtra-la do espectro observado, restando o puro AGN como um resduo. Hoje sabemos que no to simples representar essa populao. Vrios estudos tm mostrado a presena de formao estelar recente prxima a regio nuclear de galxias Seyfert. Neste trabalho foi revisada a abordagem tradicional, tendo-se focalizado a anlise na luz estelar. Espectros ticos de fenda longa, com alta razo sinal/rudo, foram usados para estudar a variao radial das larguras equivalentes de linhas de absoro e cores do contnuo. Utilizando o mtodo de sntese espectral de populaes estelares, foram estimadas as contribuies de populaes estelares de diferentes idades (e de um contnuo tipo lei de potncia) para a luz integrada das galxias, em 4020A. As principais concluses deste trabalho so: na regio nuclear, mais da metade das galxias Seyfert 2 da amostra (57%) apresenta contribuies das populaes com 100 milhes de anos ou mais jovens superior a 20% do fluxo em 4020A, enquanto que em cerca de 40% delas a componente de 3 milhes de anos (e/ou luz que provem de um ncleo ativo) tem contribuio significativa (maior do que 10%). Estas contribuies em geral decrescem quando se vai para regies mais distantes do centro das galxias, respectivamente 53% e 30% a 1kpc, 40% e 15% a 3kpc do centro das galxias. Estes resultados foram comparados com aqueles obtidos para uma amostra de galxias no ativas de mesmo tipo de Hubble das Seyfert. Em uma anlise inicial nota-se que em geral as galxias Seyfert apresentam contribuies das populaes de 100 milhes de anos maiores do que aquelas encontradas nas galxias no ativas, sugerindo uma ligao entre a formao estelar e a atividade em galxias.

Raimann, D. I.; Storchi-Bergmann, T.; Cid Fernandes, R., Jr.; Delgado, R. M. G.; Schmitt, H.; Heckman, T.; Leitherer, C.

2003-08-01

137

Effective Teaching of Photonics E&M Theory Using COMSOL  

NSDL National Science Digital Library

Photonics and optical communications, after the exuberant growth and subsequent down turn in late 1990s and early 2000s, have entered a more mature and stable growth phase. As the technology of choice for long distance, high data rate, and high performance communication systems underlying the now ubiquitous Internet communications, photonics and optical communication professionals are and will continue to be in high demand. Because electromagnetic (E&M) theory is the foundation of photonics and optical communications, mastery of E&M theory is essential for those electrical engineering (EE) students who want to develop a career in this field. Traditionally, rigorous analytic skills in advanced mathematics especially in subjects such as partial differential equations (PDE) and linear algebra are a must to the understanding and applications of E&M theory, as well as photonic device and waveguide designs. However, as practical designs grow in complexity, even the most sophisticated and advanced analytic techniques in these mathematical subject areas can quickly fall short of being a suitable practical design tool. Standard industry practices utilize comprehensive software simulation packages to address these design needs. It is therefore appropriate and advantageous for EE students to learn and more importantly visualize the E&M theory by combining the basic mathematical principles, e.g., the Maxwell equations and wave equations, with practical software tools that they are more likely to use in their professional life. This paper discusses the introduction of COMSOL, a predominant industry PDE solver, to senior EE undergraduates as a learning tool of fundamental concepts in photonics such as transverse electrical (TE) modes and transverse magnetic (TM) modes in planar waveguide designs. This teaching method improves teaching effectiveness of E&M field and wave theory by helping the students better understand mathematical complexities through this readily available and reliable software tool. In addition to the theory, the students also gain the design capability using these industry standard software packages, and therefore bridging the gap between theory and practice.

2009-10-08

138

ATTRACT-EM: A New Method for the Computational Assembly of Large Molecular Machines Using Cryo-EM Maps  

PubMed Central

Many of the most important functions in the cell are carried out by proteins organized in large molecular machines. Cryo-electron microscopy (cryo-EM) is increasingly being used to obtain low resolution density maps of these large assemblies. A new method, ATTRACT-EM, for the computational assembly of molecular assemblies from their components has been developed. Based on concepts from the protein-protein docking field, it utilizes cryo-EM density maps to assemble molecular subunits at near atomic detail, starting from millions of initial subunit configurations. The search efficiency was further enhanced by recombining partial solutions, the inclusion of symmetry information, and refinement using a molecular force field. The approach was tested on the GroES-GroEL system, using an experimental cryo-EM map at 23.5 resolution, and on several smaller complexes. Inclusion of experimental information on the symmetry of the systems and the application of a new gradient vector matching algorithm allowed the efficient identification of docked assemblies in close agreement with experiment. Application to the GroES-GroEL complex resulted in a top ranked model with a deviation of 4.6 (and a 2.8 model within the top 10) from the GroES-GroEL crystal structure, a significant improvement over existing methods. PMID:23251350

de Vries, Sjoerd J.; Zacharias, Martin

2012-01-01

139

Application of Electromagnetic (EM) Separation Technology to Metal Refining Processes: A Review  

NASA Astrophysics Data System (ADS)

Application of electromagnetic (EM) force to metal processing has been considered as an emerging technology for the production of clean metals and other advanced materials. In the current paper, the principle of EM separation was introduced and several schemes of imposing EM field, such as DC electric field with a crossed steady magnetic field, AC electric field, AC magnetic field, and traveling magnetic field were reviewed. The force around a single particle or multi-particles and their trajectories in the conductive liquid under EM field were discussed. Applications of EM technique to the purification of different liquid metals such as aluminum, zinc, magnesium, silicon, copper, and steel were summarized. Effects of EM processing parameters, such as the frequency of imposed field, imposed magnetic flux density, processing time, particle size, and the EM unit size on the EM purification efficiency were discussed. Experimental and theoretical investigations have showed that the separation efficiency of inclusions from the molten aluminum using EM purification could as high as over 90 pct. Meanwhile, the EM purification was also applied to separate intermetallic compounds from metal melt, such as ?-AlFeMnSi-phase from the molten aluminum. And then the potential industrial application of EM technique was proposed.

Zhang, Lifeng; Wang, Shengqian; Dong, Anping; Gao, Jianwei; Damoah, Lucas Nana Wiredu

2014-12-01

140

Magnetic field effects on endcap EM calorimetry in SDC  

SciTech Connect

The SDC calorimeter will be immersed in a strong magnetic field in the endcap region because of the solenoid which supplies the SDC tracking field. This flux must be returned through the endcap region of the electromagnetic (EM) and hadronic (HAD) calorimeters. Since magnetic fields are known to induce changes in the light output of plastic scintillator, the endcap will need to be recalibrated once the solenoid is energized. In addition, gradients in the field will create nonuniformities in the calorimetric response. The induced constant term'' in the EM and HAD calorimeters due to the inhomogeneities induced by the magnetic field are here evaluated in order to see that SDC performance specifications are not compromised.

Green, D.

1993-01-25

141

Magnetic field effects on endcap EM calorimetry in SDC  

SciTech Connect

The SDC calorimeter will be immersed in a strong magnetic field in the endcap region because of the solenoid which supplies the SDC tracking field. This flux must be returned through the endcap region of the electromagnetic (EM) and hadronic (HAD) calorimeters. Since magnetic fields are known to induce changes in the light output of plastic scintillator, the endcap will need to be recalibrated once the solenoid is energized. In addition, gradients in the field will create nonuniformities in the calorimetric response. The ``induced constant term`` in the EM and HAD calorimeters due to the inhomogeneities induced by the magnetic field are here evaluated in order to see that SDC performance specifications are not compromised.

Green, D.

1993-01-25

142

Da universidade para o mercado de trabalho em onze pases  

E-print Network

Universia está a ser lançado em várias instituições de ensino superior portuguesas. Rede ibero-americana regista por mês 195 mil ofertas ANA BELA FERREIRA Desde quinta-feira que os 23 mil alunos da Universidade a pró-rei- tora, Ana Nunes de Almeida. Ao aderir a esta plataforma, que con- centra não só ofertas

Instituto de Sistemas e Robotica

143

DustEM: Dust extinction and emission modelling  

NASA Astrophysics Data System (ADS)

DustEM computes the extinction and the emission of interstellar dust grains heated by photons. It is written in Fortran 95 and is jointly developed by IAS and CESR. The dust emission is calculated in the optically thin limit (no radiative transfer) and the default spectral range is 40 to 108 nm. The code is designed so dust properties can easily be changed and mixed and to allow for the inclusion of new grain physics.

Compigne, M.; Verstraete, L.; Jones, A.; Bernard, J.-P.; Boulanger, F.; Flagey, N.; Le Bourlot, J.; Paradis, D.; Ysard, N.

2013-07-01

144

MESTRADO EM MICROBIOLOGIA MICROBIOLOGIA DOS ALIMENTOS Faculdade de Medicina Veterinria  

E-print Network

MESTRADO EM MICROBIOLOGIA MICROBIOLOGIA DOS ALIMENTOS ­ Faculdade de Medicina Veterinária Objectivos: Esta UC visa ministrar formação geral e específica no domínio da Microbiologia dos Alimentos e que interfiram com a segurança sanitária dos alimentos ou promovam a respectiva fermentação, cura ou

Instituto de Sistemas e Robotica

145

UNIVERSIDADE DE BRASLIA PROGRAMA DE PS-GRADUAO EM COMUNICAO  

E-print Network

candidatos residentes no Brasil. 3.4 Poderão inscrever-se no processo seletivo candidatos em fase de e Cópia do CPF. 3.5.7 Comprovante original do recolhimento da taxa de inscrição no valor de R$ 100,00 (cem reais) no Banco do Brasil (001), Agência 1607-1, conta 170500-8 (Conta ?nica do Tesouro), código

Maier, Rudolf Richard

146

EMS mutagenesis in the pea aphid Acyrthosiphon pisum.  

PubMed

In aphids, clonal individuals can show distinct morphologic traits in response to environmental cues. Such phenotypic plasticity cannot be studied with classical genetic model organisms such as Caenorhabditis elegans or Drosophila melanogaster. The genetic basis of this biological process remain unknown, as mutations affecting this process are not available in aphids. Here, we describe a protocol to treat third-stage larvae with an alkylating mutagen, ethyl methanesulfonate (EMS), to generate random mutations within the Acyrthosiphon pisum genome. We found that even low concentrations of EMS were toxic for two genotypes of A. pisum. Mutagenesis efficiency was nevertheless assessed by estimating the occurrence of mutational events on the X chromosome. Indeed, any lethal mutation on the X-chromosome would kill males that are haploid on the X so that we used the proportion of males as an estimation of mutagenesis efficacy. We could assess a putative mutation rate of 0.4 per X-chromosome at 10 mM of EMS. We then applied this protocol to perform a small-scale mutagenesis on parthenogenetic individuals, which were screened for defects in their ability to produce sexual individuals in response to photoperiod shortening. We found one mutant line showing a reproducible altered photoperiodic response with a reduced production of males and the appearance of aberrant winged males (wing atrophy, alteration of legs morphology). This mutation appeared to be stable because it could be transmitted over several generations of parthenogenetic individuals. To our knowledge, this study represents the first example of an EMS-generated aphid mutant. PMID:24531730

Tagu, Denis; Le Trionnaire, Gal; Tanguy, Sylvie; Gauthier, Jean-Pierre; Huynh, Jean-Ren

2014-04-01

147

Agentes e Emoes em Histrias Interativas Cesar Tadeu Pozzer  

E-print Network

foco da construção de elementos autônomos, semelhantes a personagens inteligentes de jogos eletrônicos entretenimento digital. Jogos de computador, que a cada dia estão mais avançados e que diariamente causam espanto). Diversas técnicas de IA são usadas em jogos para dar aos personagens características de aprendizado, tomada

Endler, Markus

148

A Biblioteca do IB em nmeros 2013 Acervo Total (publicaes)  

E-print Network

Total atual Livros * 347 33.796 Teses 259 3.483 Títulos de Periódicos 2.132 Correntes ** 256 Não livros e teses) Biblioteca fornecedora 262 Biblioteca solicitante 100 Nº de cópias fornecidas 3 a Biblioteca comprou 156 livros e recebeu em doação 36. ** 256 por compra, 65 por doação e 78 por permuta. #12;

Morandini, Andre C.

149

Plant's EMS yields 11-month payback in fuel savings  

SciTech Connect

A Johnson Controls 85 energy-management system (EMS) saved the King-Seeley Thermos Co. $70,000 in fuel costs and paid for itself within a year. The system controls 141 points in the 420,000-square-foot plant. Although the Johnson system was the low bidder, its software package with English language programming was the deciding factor. A summary of the JC 85 system describes its functions and performance. (DCK)

Galvin, C.

1982-05-24

150

CURSO DE PS-GRADUAO EM COMPUTAO APLICADA  

E-print Network

. Disciplinas do Núcleo obrigatório de Matemática Aplicada Matemática Computacional I Matemática Computacional Análise Wavelet I Análise Wavelet II Aprendizado Computacional e Reconhecimento de Padrões Banco de Dados Computacional e Aplicações Introdução à Teoria de Sistemas Dinâmicos Matemática Computacional III Métodos em

151

A Bayesian View on Cryo-EM Structure Determination  

PubMed Central

Three-dimensional (3D) structure determination by single-particle analysis of cryo-electron microscopy (cryo-EM) images requires many parameters to be determined from extremely noisy data. This makes the method prone to overfitting, that is, when structures describe noise rather than signal, in particular near their resolution limit where noise levels are highest. Cryo-EM structures are typically filtered using ad hoc procedures to prevent overfitting, but the tuning of arbitrary parameters may lead to subjectivity in the results. I describe a Bayesian interpretation of cryo-EM structure determination, where smoothness in the reconstructed density is imposed through a Gaussian prior in the Fourier domain. The statistical framework dictates how data and prior knowledge should be combined, so that the optimal 3D linear filter is obtained without the need for arbitrariness and objective resolution estimates may be obtained. Application to experimental data indicates that the statistical approach yields more reliable structures than existing methods and is capable of detecting smaller classes in data sets that contain multiple different structures. PMID:22100448

Scheres, Sjors H.W.

2012-01-01

152

A study on characteristics of EM radiation from stripline structure  

NASA Astrophysics Data System (ADS)

In recent years, effective methods for predicting and suppressing electromagnetic interference over a broad band are required. In this paper, we focus on the prediction of electromagnetic (EM) radiation from a stripline structure with a ground thin wire by an equivalent circuit model. First, frequency responses of common-mode (CM) current on the printed circuit board and EM radiation are studied with finite difference time domain modeling. Secondly, an equivalent circuit model for predicting CM current is proposed. The equivalent circuit model for prediction is based on the concepts of CM antenna impedance, distributed constant circuit, and electric coupling between the power plane and the thin ground wire. Good agreement between the predicted and full-wave analysis results indicates the validity of the proposed equivalent circuit model. The frequency response of EM radiation from the stripline structure can be identified using our proposed model. In addition, the equivalent circuit model provides enough flexibility for different geometric parameters and can be used to develop physical insights and design guidelines.

Kayano, Yoshiki; Inoue, Hiroshi

2011-10-01

153

The US DOE-EM International Program - 13004  

SciTech Connect

The U.S. Department of Energy (DOE) Office of Environmental Management (EM) conducts international collaboration activities in support of U.S. policies and objectives regarding the accelerated risk reduction and remediation of environmental legacy of the nations' nuclear weapons program and government sponsored nuclear energy research. The EM International Program supported out of the EM Office of the Associate Principal Deputy Assistant Secretary pursues collaborations with foreign government organizations, educational institutions and private industry to assist in identifying technologies and promote international collaborations that leverage resources and link international experience and expertise. In fiscal year (FY) 2012, the International Program awarded eight international collaborative projects for work scope spanning waste processing, groundwater and soil remediation, deactivation and decommissioning (D and D) and nuclear materials disposition initiatives to seven foreign organizations. Additionally, the International Program's scope and collaboration opportunities were expanded to include technical as well as non-technical areas. This paper will present an overview of the on-going tasks awarded in FY 2012 and an update of upcoming international activities and opportunities for expansion into FY 2013 and beyond. (authors)

Elmetti, Rosa R.; Han, Ana M.; Williams, Alice C. [Department of Energy, Office of Environmental Management, 1000 Independence Ave. SW, Washington, DC 20585 (United States)] [Department of Energy, Office of Environmental Management, 1000 Independence Ave. SW, Washington, DC 20585 (United States)

2013-07-01

154

Covariance Matrix Estimation for the Cryo-EM Heterogeneity Problem  

E-print Network

In cryo-electron microscopy (cryo-EM), a microscope generates a top view of a sample of randomly-oriented copies of a molecule. The cryo-EM problem is to use the resulting set of noisy 2D projection images taken at unknown directions to reconstruct the 3D structure of the molecule. In some situations, the molecule under examination exhibits structural variability, which poses a fundamental challenge in cryo-EM. The heterogeneity problem is the task of mapping the space of conformational states of a molecule. It has been previously shown that the leading eigenvectors of the covariance matrix of the 3D molecules can be used to solve the heterogeneity problem. Estimating the covariance matrix is however challenging, since only projections of the molecules are observed, but not the molecules themselves. In this paper, we derive an estimator for the covariance matrix as a solution to a certain linear system. The linear operator to be inverted, which we term the tomographic covariance transform, is an important obj...

Katsevich, Gene; Singer, Amit

2013-01-01

155

ANLISE DA INSERO DOS TEMAS DE HUMANIDADES E TICA, COM METODOLOGIA DE APRENDIZAGEM BASEADA EM PROBLEMAS, EM CURRICULO MDICO INTEGRADO EM ESCOLA PBLICA NO DISTRITO FEDERAL, BRASIL  

PubMed Central

Objetivo Realizar uma anlise da insero da tica e humanidades no currculo do Curso de Medicina da Escola Superior em Cincias da Sade - ESCS, escola pblica do Distrito Federal, Brasil, de forma a contribuir com o processo de gesto curricular. Metodologia O Estudo de coorte e documental. Foram pesquisados 37 termos relacionados tica e 36 referentes humanizao nos objetivos educacionais e contedo dos mdulos temticos, habilidades e atitudes e interao ensino-servio-comunidade, de 1a a 4a srie e no programa do internato no currculo (ano 2006) e no projeto pedaggico do Curso de Medicina (2001). Resultados Maior insero da humanizao, tica e biotica na 1a e 2a srie, quando comparado insero na 3a e 4a srie e no internato, (IC95%-?=0,034, pvalue=0,007). Unidade de habilidades e atitudes: freqncia das 3 temticas no currculo da 1a a 4a sries (IC95%-?=0,026, pvalue=0,013). Quando comparada a insero entre o internato e as quatro primeiras sries, observa-se que nestas a insero da temtica humanizao superior (IC95%-?=0,042, pvalue=0,029). Concluso O currculo desenvolvido no ano de 2006 na ESCS apresentou correlao com o projeto pedaggico do curso e contemplou a temtica de forma abrangente, em todas as sries e internato. PMID:20396594

Novaes, Maria Rita Carvalho Garbi; Novaes, Luiz Carlos Garcez; Guilhem, Dirce; Lolas, Fernando; Silveira, Carla; Guiotti, Murilo

2009-01-01

156

EMS-STARS: Emergency Medical Services "Superuser" Transport Associations: An Adult Retrospective Study.  

PubMed

Abstract Objective. Emergency medical services (EMS) "superusers" -those who use EMS services at extremely high rates -have not been well characterized. Recent interest in the small group of individuals who account for a disproportionate share of health-care expenditures has led to research on frequent users of emergency departments and other health services, but little research has been done regarding those who use EMS services. To inform policy and intervention implementation, we undertook a descriptive analysis of EMS superusers in a large urban community. In this paper we compare EMS superusers to low, moderate, and high users to characterize factors contributing to EMS use. We also estimate the financial impact of EMS superusers. Methods. We conducted a retrospective cross-sectional study based on 1 year of data from an urban EMS system. Data for all EMS encounters with patients age ?18years were extracted from electronic records generated on scene by paramedics. We identified demographic and clinical variables associated with levels of EMS use. EMS users were characterized by the annual number of EMS encounters: low (1), moderate (2-4), high (5-14), and superusers (?15). In addition, we performed a financial analysis using San Francisco Fire Department (SFFD) 2009 charge and reimbursement data. Results. A total of 31,462 adults generated 43,559 EMS ambulance encounters, which resulted in 39,107 transports (a 90% transport rate). Encounters for general medical reasons were common among moderate and high users and less frequent among superusers and low users, while alcohol use was exponentially correlated with encounter frequency. Superusers were significantly younger than moderate EMS users, and more likely to be male. The superuser group created a significantly higher financial burden/person than any other group, comprising 0.3% of the study population, but over 6% of annual EMS charges and reimbursements. Conclusions. In this retrospective study, adult EMS "superusers" emerged as a distinct, predominantly male population and their EMS encounters were associated with alcohol use. Continued analysis of this unique, high-cost, and frequently transported population will likely illuminate specific intervention strategies. PMID:25093273

Hall, M Kennedy; Raven, Maria C; Hall, Jane; Yeh, Clement; Allen, Elaine; Rodriguez, Robert M; Tangherlini, Niels L; Sporer, Karl A; Brown, John F

2015-01-01

157

Programa de Ps-Graduao em Cincia dos Alimentos CAL/CCA/UFSC Regimento Interno  

E-print Network

1 Programa de Pós-Graduação em Ciência dos Alimentos CAL/CCA/UFSC Regimento Interno UNIVERSIDADE FEDERAL DE SANTA CATARINA CENTRO DE CI?NCIAS AGRÁRIAS PROGRAMA DE P?S-GRADUA??O EM CI?NCIA DOS ALIMENTOS REGIMENTO DO PROGRAMA TÍTULO I DO OBJETIVO Art. 1. O Programa de Pós-Graduação em Ciência dos Alimentos

Floeter, Sergio Ricardo

158

iGrace modle informatique d'motions du robot compagnon EmI  

E-print Network

1 iGrace ­ modèle informatique d'émotions du robot compagnon EmI iGrace ­ emotional computational model for EmI companion robot Sébastien SAINT-AIM?, Brigitte LE-P?V?DIC, Dominique DUHAUT Valoria of EmI, as well as improvements to be made for its third version. Keywords. Emotions, computational

Paris-Sud XI, Université de

159

Quantificao de nitrofurazona e de nitrofurantona em medicamentos por espectrofotometria de refletncia difusa e de transmisso.  

E-print Network

??A nitrofurazona e a nitrofurantona so substncias derivadas dos nitrofuranos e comercializadas em preparaes farmacuticas com ao bactericida, antifngica e antimicrobiana com um amplo espectro (more)

Marcio das Neves Palumbo

2011-01-01

160

Avaliao da infeco por morbilivrus em cetceos arrojados na costa portuguesa.  

E-print Network

??Dissertao de Mestrado Integrado em Medicina Veterinria O Dolphin morbilivrus (DMV) e o Porpoise morbillivirus (PMV) so membros da subfamlia Paramyxovirinae, famlia Paramyxoviridae. Estes vrus (more)

Bento, Maria Carolina Rocha de Medeiros

2012-01-01

161

Modeling of MHD edge containment in strip casting with ELEKTRA and CaPS-EM codes  

SciTech Connect

This paper presents modeling studies of magnetohydrodynamics analysis in twin-roll casting. Argonne National Laboratory (ANL) and ISPAT Inland Inc. (Inland), formerly Inland Steel Co., have worked together to develop a three-dimensional (3-D) computer model that can predict eddy currents, fluid flows, and liquid metal containment of an electromagnetic (EM) edge containment device. The model was verified by comparing predictions with experimental results of liquid metal containment and fluid flow in EM edge dams (EMDs) that were designed at Inland for twin-roll casting. This mathematical model can significantly shorten casting research on the use of EM fields for liquid metal containment and control. The model can optimize the EMD design so it is suitable for application, and minimize expensive time-consuming full-scale testing. Numerical simulation was performed by coupling a 3-D finite-element EM code (ELEKTRA) and a 3-D finite-difference fluids code (CaPS-EM) to solve heat transfer, fluid flow, and turbulence transport in a casting process that involves EM fields. ELEKTRA can predict the eddy-current distribution and the EM forces in complex geometries. CaPS-EM can model fluid flows with free surfaces. The computed 3-D magnetic fields and induced eddy currents in ELEKTRA are used as input to temperature- and flow-field computations in CaPS-EM. Results of the numerical simulation compared well with measurements obtained from both static and dynamic tests.

Chang, F. C.

2000-01-12

162

Iniciativas de Transio e Permacultura, como reestruturao e capacitao de comunidades em Portugal.  

E-print Network

??Mestrado em Gesto e Estratgia Industrial Este trabalho visa abordar o movimento de Iniciativas de Transio, analisando as suas motivaes, baseadas fundamentalmente na insustentabilidade da (more)

Soares, Pedro David Almeida Rebelo

2012-01-01

163

Covariance Matrix Estimation for the Cryo-EM Heterogeneity Problem*  

PubMed Central

In cryo-electron microscopy (cryo-EM), a microscope generates a top view of a sample of randomly oriented copies of a molecule. The problem of single particle reconstruction (SPR) from cryo-EM is to use the resulting set of noisy two-dimensional projection images taken at unknown directions to reconstruct the three-dimensional (3D) structure of the molecule. In some situations, the molecule under examination exhibits structural variability, which poses a fundamental challenge in SPR. The heterogeneity problem is the task of mapping the space of conformational states of a molecule. It has been previously suggested that the leading eigenvectors of the covariance matrix of the 3D molecules can be used to solve the heterogeneity problem. Estimating the covariance matrix is challenging, since only projections of the molecules are observed, but not the molecules themselves. In this paper, we formulate a general problem of covariance estimation from noisy projections of samples. This problem has intimate connections with matrix completion problems and high-dimensional principal component analysis. We propose an estimator and prove its consistency. When there are finitely many heterogeneity classes, the spectrum of the estimated covariance matrix reveals the number of classes. The estimator can be found as the solution to a certain linear system. In the cryo-EM case, the linear operator to be inverted, which we term the projection covariance transform, is an important object in covariance estimation for tomographic problems involving structural variation. Inverting it involves applying a filter akin to the ramp filter in tomography. We design a basis in which this linear operator is sparse and thus can be tractably inverted despite its large size. We demonstrate via numerical experiments on synthetic datasets the robustness of our algorithm to high levels of noise.

Katsevich, E.; Katsevich, A.; Singer, A.

2015-01-01

164

UNIVERSIDADE DE BRASLIA PROGRAMA DE PS-GRADUAO EM FILOSOFIA  

E-print Network

Filosofia: 0,5 (um) ponto (até 1 pontos) 2.3. Livro de Filosofia: 1 (dois) pontos (até 2 pontos) 2.4. Resumo evento de Filosofia: 0,5 (um) ponto (até 1 pontos)" Leia-se "2.2. Capítulo de livro de Filosofia: 0,5 (meio) ponto (até 1 pontos) 2.3. Livro de Filosofia: 1 (um) ponto (até 2 pontos) 2.4. Resumo em anais de

Lucero, Jorge Carlos

165

PROGRAMA DE PS-GRADUAO EM EDUCAO MANUAL DO CANDIDATO  

E-print Network

.ppge.ufsc.br a partir de 12 de março de 2013); b) Cópia da Carteira de Identidade e do CPF; c) Cópia do DIPLOMA e do (apenas o CPF identificará o candidato), contendo `folha de rosto' (disponível a partir de 12 de março na, 1993. v. 2. p. 193-274. GONDRA, J. G. (Org.). Pesquisa em história da educação no Brasil. Rio de

Floeter, Sergio Ricardo

166

State of the Art in EM Field Computation  

SciTech Connect

This paper presents the advances in electromagnetic (EM) field computation that have been enabled by the US DOE SciDAC Accelerator Science and Technology project which supports the development and application of a suite of electromagnetic codes based on the higher-order finite element method. Implemented on distributed memory supercomputers, this state of the art simulation capability has produced results which are of great interest to accelerator designers and with realism previously not possible with standard codes. Examples from work on the International Linear Collider (ILC) project are described.

Ng, C.; Akcelik, V.; Candel, A.; Chen, S.; Folwell, N.; Ge, L.; Guetz, A.; Jiang, H.; Kabel, A.; Lee, L.-Q.; Li, Z.; Prudencio, E.; Schussman, G.; Uplenchwar, R.; Xiao,; Ko, K.; /SLAC

2006-09-25

167

An Effective EMS Hardware and Software Interface- The Trained Operator  

E-print Network

print out a specific alarm message if a piece of equipment fails to operate properly. This knowledge merely enables the operator to list capabilities, it does not imply understanding of how to react to, alter or cause those events. Knowledge alone... to be productive and the owner can begin to realize EMS benefits. ANALYSIS ,..... The three skill levels achieved so far, should be regarded as the minimum necessary for acceptable system opera tion. The next two training levels rep resent "money in the bank...

Cherry, C. L.

168

SEI: Junior E&M I Course Materials - Electrodynamics  

NSDL National Science Digital Library

This is a collection of resources for teaching electrodynamics. Included are homework questions, concept tests, student tutorials, and information about common student difficulties in the topic and ways to address these difficulties. This material was developed as part of a education research-based course transformation for junior level E&M. All of the resources developed for this course are available, sorted by individual topic and type, at http://www.compadre.org/psrc/items/Relations.cfm?ID=7891. Because this topic is not typically taught in depth in the courses used in developing these course materials, these materials are less complete than the other sections.

Pollock, Steven J.; Chasteen, Stephanie V.

2010-09-24

169

9/7/2004 Penumadu, Prashant, and Frost. EM-2004 1 A VIRTUAL TRIAXIAL COMPRESSION  

E-print Network

9/7/2004 Penumadu, Prashant, and Frost. EM-2004 1 A VIRTUAL TRIAXIAL COMPRESSION TEST SIMULATOR, Knoxville, TN, USA David J. Frost: Department of Civil and Environmental Engineering, Georgia Institute. #12;9/7/2004 Penumadu, Prashant, and Frost. EM-2004 2 Presentation Outline Concept of Virtual

Prashant, Amit

170

Global Convergence of the EM Algorithm for Unconstrained Latent Variable Models with Categorical Indicators  

ERIC Educational Resources Information Center

Convergence of the expectation-maximization (EM) algorithm to a global optimum of the marginal log likelihood function for unconstrained latent variable models with categorical indicators is presented. The sufficient conditions under which global convergence of the EM algorithm is attainable are provided in an information-theoretic context by

Weissman, Alexander

2013-01-01

171

DIAGNSTICO DE FALHAS EM MQUINAS ROTATIVAS ATRAVS DA ANLISE DA VIBRAO TORCIONAL  

Microsoft Academic Search

RESUMO Os eixos, quando transmitem torque, agem como molas torcionais, alm da flexo. Quando h variao cclica no torque transmitido podem aparecer vibraes torcionais foradas, que dependendo das freqncias naturais do sistema podero causar ressonncia, caso em que o eixo poder oscilar em amplitudes suficientemente elevadas para produzir falhas. O presente trabalho apresenta tcnicas de medio e anlise de vibrao

Evaldo Khater

172

Comportamento de Pantala flavescens (Odonata, Anisoptera, Libellulidae) e perda do investimento reprodutivo em reas antropizadas  

Microsoft Academic Search

RESUMO: Pantala flavescens uma liblula exoftica, territorialista e migratria. Devido ao comportamento migratrio, a ocorrncia desta espcie em reas no alagadas comum. No entanto, a presena de P. flavescens em reas de estacionamento de veculos e o registro de eventos de oviposio sobre as latarias de automveis no bem entendida. O presente trabalho apresenta dados comportamentais de

Antonia Figueira Van de Koken

2007-01-01

173

Effectiveness of electromagnetic wave absorbers to improve 5.8 GHz DSRC EM environment inside tunnel  

Microsoft Academic Search

Electromagnetic (EM) wave absorbers have been used to improve the EM environment of an electronic toll collection (ETC) system on an express highway or a wireless local area network (LAN) system in an indoor environment. In this paper, an efficient multi-ray propagation model, which uses a combination of image technique and grid approach to trace multiple signal rays from transmitter

Ramesh K. POKHAREL; Hirotomo ICHINOSE; Osamu HASHIMOTO; Makoto TOYOTA; Itoji SAMEDA; Kouji WADA

2005-01-01

174

Developing State and National Evaluation Infrastructures- Guidance for the Challenges and Opportunities of EM&V  

SciTech Connect

Evaluating the impacts and effectiveness of energy efficiency programs is likely to become increasingly important for state policymakers and program administrators given legislative mandates and regulatory goals and increasing reliance on energy efficiency as a resource. In this paper, we summarize three activities that the authors have conducted that highlight the expanded role of evaluation, measurement and verification (EM&V): a study that identified and analyzed challenges in improving and scaling up EM&V activities; a scoping study that identified issues involved in developing a national efficiency EM&V standard; and lessons learned from providing technical assistance on EM&V issues to states that are ramping up energy efficiency programs. The lessons learned are summarized in 13 EM&V issues that policy makers should address in each jurisdiction and which are listed and briefly described. The paper also discusses how improving the effectiveness and reliability of EM&V will require additional capacity building, better access to existing EM&V resources, new methods to address emerging issues and technologies, and perhaps foundational documents and approaches to improving the credibility and cross jurisdictional comparability of efficiency investments. Two of the potential foundational documents discussed are a national EM&V standard or resource guide and regional deemed savings and algorithm databases.

Schiller, Steven R.; Goldman, Charles A.

2011-06-24

175

COLOR IMAGE SEGMENTATION USING A SELF-INITIALIZING EM Dana Elena Ilea and Paul F. Whelan  

E-print Network

COLOR IMAGE SEGMENTATION USING A SELF-INITIALIZING EM ALGORITHM Dana Elena Ilea and Paul F. Whelan-Maximization (EM) algorithm that we apply for color image segmentation. Since this algorithm partitions the data included in the development of an adaptive image segmentation scheme that has been applied to a large

Whelan, Paul F.

176

Adaptac~ao ao Contexto em Sistemas de Comunicac~ao Heterogeneos  

E-print Network

. Considerem-se por exemplo aplicac¸ ~oes cooperativas multi-utilizador tais como os jogos em rede ou aplicac¸~oes cooperativas multi-utilizador (tais como os jogos on-line). Embora a maioria das concretizac¸~oes actuais destes jogos se baseiem em arquitecturas cliente-servidor, foram j´a de- Este trabalho foi

Rodrigues, Luís E.T.

177

Uma Estratgia para a Visualizao do Cu e seus Elementos em Jogos  

Microsoft Academic Search

Resumo Uma visualizao convincente do cu e seus elementos (nuvens, sol, lua, estrelas) fundamental para agregar realismo aos jogos que usam cenrios em ambientes externos. Como uma simulao precisa desses efeitos pode ser computacionalmente muito cara, muitos jogos empregam artifcios, visualizando o cu como texturas mapeadas em esferas e caixas envolventes. Neste trabalho, apresentamos uma estratgia simples para simular

MARCIO PEREIRA DE ARAUJO; WALDEMAR CELES

178

Method for evaluating compatibility of commercial electromagnetic (EM) microsensor tracking systems with surgical and imaging tables  

NASA Astrophysics Data System (ADS)

Electromagnetic (EM) tracking systems have been successfully used for Surgical Navigation in ENT, cranial, and spine applications for several years. Catheter sized micro EM sensors have also been used in tightly controlled cardiac mapping and pulmonary applications. EM systems have the benefit over optical navigation systems of not requiring a line-of-sight between devices. Ferrous metals or conductive materials that are transient within the EM working volume may impact tracking performance. Effective methods for detecting and reporting EM field distortions are generally well known. Distortion compensation can be achieved for objects that have a static spatial relationship to a tracking sensor. New commercially available micro EM tracking systems offer opportunities for expanded image-guided navigation procedures. It is important to know and understand how well these systems perform with different surgical tables and ancillary equipment. By their design and intended use, micro EM sensors will be located at the distal tip of tracked devices and therefore be in closer proximity to the tables. Our goal was to define a simple and portable process that could be used to estimate the EM tracker accuracy, and to vet a large number of popular general surgery and imaging tables that are used in the United States and abroad.

Nafis, Christopher; Jensen, Vern; von Jako, Ron

2008-03-01

179

Chapter 19: HVAC Controls (DDC/EMS/BAS) Evaluation Protocol  

SciTech Connect

The HVAC Controls Evaluation Protocol is designed to address evaluation issues for direct digital controls/energy management systems/building automation systems (DDC/EMS/BAS) that are installed to control heating, ventilation, and air-conditioning (HVAC) equipment in commercial and institutional buildings. (This chapter refers to the DDC/EMS/BAS measure as HVAC controls.) This protocol may also be applicable to industrial facilities such as clean rooms and labs, which have either significant HVAC equipment or spaces requiring special environmental conditions. This protocol addresses only HVAC-related equipment and the energy savings estimation methods associated with installing such control systems as an energy efficiency measure. The affected equipment includes: Air-side equipment (air handlers, direct expansion systems, furnaces, other heating- and cooling-related devices, terminal air distribution equipment, and fans); Central plant equipment (chillers, cooling towers, boilers, and pumps). These controls may also operate or affect other end uses, such as lighting, domestic hot water, irrigation systems, and life safety systems such as fire alarms and other security systems. Considerable nonenergy benefits, such as maintenance scheduling, system component troubleshooting, equipment failure alarms, and increased equipment lifetime, may also be associated with these systems. When connected to building utility meters, these systems can also be valuable demand-limiting control tools. However, this protocol does not evaluate any of these additional capabilities and benefits.

Romberger, J.

2014-11-01

180

Children recognize emotions of EmI companion robot Sebastien Saint-Aime and Brigitte Le Pevedic and Dominique Duhaut  

E-print Network

Children recognize emotions of EmI companion robot S´ebastien Saint-Aim´e and Brigitte Le P´ev´edic and Dominique Duhaut Abstract-- This article presents the evaluation of the emotio- nal expressiveness of EmI and implementation of EmI, and experimentation to evaluate the expressiveness of EmI with 52 school children aged 7

Paris-Sud XI, Université de

181

Prevalence of Depression and Cognitive Impairment in Older Adult EMS Patients  

PubMed Central

Objectives To characterize the proportion of older adult ED patients with depression or cognitive impairment. To compare the prevalence of depression or cognitive impairment among ED patients arriving via EMS, as compared to other modes. Methods Community-dwelling older adults (age?60) presenting to an academic medical center ED were interviewed. Participants provided demographic and clinical information, and were evaluated for depression and cognitive impairment. Subjects arriving via EMS were compared to those arriving via other modes using the chi-square test, t-test, and the Wilcoxon rank sum test, where appropriate. Results Consent was obtained from 1342 eligible older adults; 695 (52%) arrived via EMS. The median age for those arriving via EMS was 74 (IQR 65, 82), 52% were female, 81% white. 15% of EMS patients had moderate or greater depression, as compared to 14% of patients arriving via other modes (p=0.52). 13% of EMS patients had cognitive impairment, as compared to 8% arriving via other modes (p<0.01). Depressed EMS patients frequently reported a history of depression (47%) and taking antidepressants (51%). Cognitively impaired EMS patients infrequently reported a history of dementia (16%) or taking medications for dementia (14%). Conclusions In this cohort of community-dwelling older adult ED patients depression and cognitive impairment were common. As compared to ED patients arriving by other transport means, patients arriving via EMS had similar prevalence of depression but an increased prevalence of cognitive impairment. Screening for depression and cognitive impairment by EMS providers may have value, but needs further investigation. PMID:20977363

Shah, Manish N.; Jones, Courtney M. C.; Richardson, Thomas M.; Conwell, Yeates; Katz, Paul; Schneider, Sandra M.

2010-01-01

182

The EM SSAB Annual Work Plan Process: Focusing Board Efforts and Resources - 13667  

SciTech Connect

One of the most daunting tasks for any new member of a local board of the Environmental Management Site Specific Advisory Board (EM SSAB) is to try to understand the scope of the clean-up activities going on at the site. In most cases, there are at least two or three major cleanup activities in progress as well as monitoring of past projects. When planning for future projects is added to the mix, the list of projects can be long. With the clean-up activities involving all major environmental media - air, water, soils, and groundwater, new EM SSAB members can find themselves totally overwhelmed and ineffective. Helping new members get over this initial hurdle is a major objective of EM and all local boards of the EM SSAB. Even as members start to understand the size and scope of the projects at a site, they can still be frustrated at the length of time it takes to see results and get projects completed. Many project and clean-up timelines for most of the sites go beyond 10 years, so it's not unusual for an EM SSAB member to see the completion of only 1 or 2 projects over the course of their 6-year term on the board. This paper explores the annual work planning process of the EM SSAB local boards, one tool that can be used to educate EM SSAB members into seeing the broader picture for the site. EM SSAB local work plans divide the site into projects focused on a specific environmental issue or media such as groundwater and/or waste disposal options. Projects are further broken down into smaller segments by highlighting major milestones. Using these metrics, local boards of the EM SSAB can start to quantify the effectiveness of the project in achieving the ultimate goal of site clean-up. These metrics can also trigger board advice and recommendations for EM. At the beginning of each fiscal year, the EM SSAB work plan provides a road map with quantifiable checkpoints for activities throughout the year. When the work plans are integrated with site-specific, enforceable regulatory milestones, they can provide a comprehensive work plan for not only the board, but also regulators, site contractors, and DOE. Because the work plans are reviewed and approved by DOE, they carry some weight in holding local boards of the EM SSAB accountable. This structure provides the basis for local boards to achieve their primary function, to provide DOE with information, advice, and recommendations concerning issues affecting the EM program at the site. (authors)

Young, Ralph [Paducah Citizens Advisory Board (United States)] [Paducah Citizens Advisory Board (United States)

2013-07-01

183

Capturing RNA-dependent pathways for cryo-EM analysis  

PubMed Central

Cryo-Electron Microscopy (EM) is a powerful technique to visualize biological processes at nanometer resolution. Structural studies of macromolecular assemblies are typically performed on individual complexes that are biochemically isolated from their cellular context. Here we present a molecular imaging platform to capture and view multiple components of cellular pathways within a functionally relevant framework. We utilized the bacterial protein synthesis machinery as a model system to develop our approach. By using modified Affinity Grid surfaces, we were able to recruit multiple protein assemblies bound to nascent strands of mRNA. The combined use of Affinity Capture technology and single particle electron microscopy provide the basis for visualizing RNA-dependent pathways in a remarkable new way. PMID:24688633

Tanner, Justin R.; Degen, Katherine; Gilmore, Brian L.; Kelly, Deborah F.

2012-01-01

184

High-dimensional cluster analysis with the Masked EM Algorithm  

PubMed Central

Cluster analysis faces two problems in high dimensions: first, the curse of dimensionality that can lead to overfitting and poor generalization performance; and second, the sheer time taken for conventional algorithms to process large amounts of high-dimensional data. We describe a solution to these problems, designed for the application of spike sorting for next-generation high channel-count neural probes. In this problem, only a small subset of features provide information about the cluster member-ship of any one data vector, but this informative feature subset is not the same for all data points, rendering classical feature selection ineffective. We introduce a Masked EM algorithm that allows accurate and time-efficient clustering of up to millions of points in thousands of dimensions. We demonstrate its applicability to synthetic data, and to real-world high-channel-count spike sorting data. PMID:25149694

Kadir, Shabnam N.; Goodman, Dan F. M.; Harris, Kenneth D.

2014-01-01

185

SEI: Junior E&M I Course Materials - Homework  

NSDL National Science Digital Library

This homework question collection was constructed over the course of four semesters of a transformed junior-level Electricity and Magnetism course on electro- and magneto-statics. Many questions are related to textbook problems, but with added elements of explanation, sense-making, estimation or approximation, real-world connections, and multiple-representations. Not all these homework questions were used in the course design project. Some problems used include detailed instructor notes, including statistics on student performance on each homework problem assigned. The homework solutions are only available to instructors by writing the authors, Steven.Pollock@colorado.edu This material was developed as part of a education research-based course transformation for junior level E&M. All of the resources developed for this course are available, sorted by individual topic and type, at http://www.compadre.org/psrc/items/Relations.cfm?ID=7891.

Pollock, Steven J.; Chasteen, Stephanie V.

2010-06-10

186

EM Properties of Magnetic Minerals at RADAR Frequencies  

NASA Technical Reports Server (NTRS)

Previous missions to Mars have revealed that Mars surface is magnetic at DC frequency. Does this highly magnetic surface layer attenuate RADAR energy as it does in certain locations on Earth? It has been suggested that the active magnetic mineral on Mars is titanomaghemite and/or titanomagnetite. When titanium is incorporated into a maghemite or magnetite crystal, the Curie temperature can be significantly reduced. Mars has a wide range of daily temperature fluctuations (303K - 143K), which could allow for daily passes through the Curie temperature. Hence, the global dust layer on Mars could experience widely varying magnetic properties as a function of temperature, more specifically being ferromagnetic at night and paramagnetic during the day. Measurements of EM properties of magnetic minerals were made versus frequency and temperature (300K- 180K). Magnetic minerals and Martian analog samples were gathered from a number of different locations on Earth.

Stillman, D. E.; Olhoeft, G. R.

2005-01-01

187

In-house labor saves University 50% of EMS cost  

SciTech Connect

By designing and installing its own energy-management system (EMS), the staff at Oklahoma State University hopes to reduce the cost of a Staefa EMA II system in half. However, the school has held up payment in accordance with its contract until some equipment problems are solved and the system is operating for 30 consecutive days at 95% of performance specifications. Faulty field multiplexers and inadequate voice-intercom equipment failed the first two acceptance tests. The 750-point system that will control 10 buildings should have a three-year payback. In-house crews are reducing installation costs because they are familiar with the buildings and can work around class schedules. Two separate bids were required because most bids failed to meet equipment specifications. (DCK)

Crawford, E.

1982-03-15

188

SEI: Junior E&M I Course Materials - Tutorials  

NSDL National Science Digital Library

This collection of tutorials and tutorial pre-tests was constructed for a transformed junior-level Electricity and Magnetism course. These tutorials are weekly student sessions, modeled after research-validated curricula developed at the University of Washington. Using these materials in study/recitation sections, students work in small groups with the instructor as a learning coach. The materials are designed to target known student difficulties, to elicit and develop conceptual understanding and math/physics connections. They also help faculty listen to student reasoning, get a clearer sense of student ideas, and determine where they are struggling. This material was developed as part of a education research-based course transformation for junior level E&M. All of the resources developed for this course are available, sorted by individual topic and type, at http://www.compadre.org/psrc/items/Relations.cfm?ID=7891.

Pollock, Steven J.; Chasteen, Stephanie V.; Kinney, Edward; Dubson, Michael

2010-06-10

189

Integrated EM & Thermal Simulations with Upgraded VORPAL Software  

SciTech Connect

Nuclear physics accelerators are powered by microwaves which must travel in waveguides between room-temperature sources and the cryogenic accelerator structures. The ohmic heat load from the microwaves is affected by the temperature-dependent surface resistance and in turn affects the cryogenic thermal conduction problem. Integrated EM & thermal analysis of this difficult non-linear problem is now possible with the VORPAL finite-difference time-domain simulation tool. We highlight thermal benchmarking work with a complex HOM feed-through geometry, done in collaboration with researchers at the Thomas Jefferson National Accelerator Laboratory, and discuss upcoming design studies with this emerging tool. This work is part of an effort to generalize the VORPAL framework to include generalized PDE capabilities, for wider multi-physics capabilities in the accelerator, vacuum electronics, plasma processing and fusion R&D fields, and we will also discuss user interface and algorithmic upgrades which facilitate this emerging multiphysics capability.

D.N. Smithe, D. Karipides, P. Stoltz, G. Cheng, H. Wang

2011-03-01

190

EMS mutant spectra generated by multi-parameter flow cytometry.  

PubMed

The CHO A(L) cell line contains a single copy of human chromosome 11 that encodes several cell surface proteins including glycosyl phosphatidylinositol (GPI) linked CD59 and CD90, as well as CD98, CD44 and CD151 which are not GPI-linked. The flow cytometry mutation assay (FCMA) measures mutations of the CD59 gene by the absence of fluorescence when stained with antibodies against the CD59 cell surface protein. We have measured simultaneous mutations in CD59, CD44, CD90, CD98 and CD151 to generate a mutant spectrum for ionizing radiation. After treatment with ethyl methanesulfonate (EMS) many cells have an intermediate level of CD59 staining. Single cells were sorted from CD59(-) regions with varying levels of fluorescence and the resulting clonal populations had a stable phenotype for CD59 expression. Mutant spectra were generated by flow cytometry using the isolated clones and nearly all clones were mutated in CD59 only. Interestingly, about 60% of the CD59 negative clones were actually GPI mutants determined by staining with the GPI specific fluorescently labeled bacterial toxin aerolysin (FLAER). The GPI negative cells are most likely caused by mutations in the X-linked pigA gene important in GPI biosynthesis. Small mutations of pigA and CD59 were expected for the alkylating agent EMS and the resulting spectra are significantly different than the large deletions found when analyzing radiation mutants. After analyzing the CD59(-) clonal populations we have adjusted the FCMA mutant regions from 1% to 10% of the mean of the CD59 positive peak to include the majority of CD59 mutants. PMID:19463836

Keysar, Stephen B; Fox, Michael H

2009-12-01

191

Effects of integrated use of organic and inorganic nutrient sources with effective microorganisms (EM) on seed cotton yield in Pakistan.  

PubMed

A field experiment was conducted to determine the effects of integrated use of organic and inorganic nutrient sources with effective microorganisms on growth and yield of cotton. Treatments included: control; organic materials (OM); effective microorganisms (EM); OM+EM; mineral NPK (170:85:60 kg); 1/2 mineral NPK+EM; 1/2 mineral NPK+OM+EM and mineral NPK+OM+EM. OM and EM alone did not increase the yield and yield attributing components significantly but integrated use of both resulted in a 44% increase over control. Application of NPK in combination with OM and EM resulted in the highest seed cotton yield (2470 kg ha-1). Integrated use of OM+EM with 1/2 mineral NPK yielded 2091 kg ha-1, similar to the yield (2165 kg ha-1) obtained from full recommended NPK, indicating that this combination can substitute for 85 kg N ha-1. Combination of both N sources with EM also increased the concentrations of NPK in plants. Economic analysis suggested the use of 1/2 mineral NPK with EM+OM saves the mineral N fertilizer by almost 50% compared to a system with only mineral NPK application. This study indicated that application of EM increased the efficiency of both organic and mineral nutrient sources but alone was ineffective in increasing yield. PMID:16023343

Khaliq, Abdul; Abbasi, M Kaleem; Hussain, Tahir

2006-05-01

192

Effects of caffeine or EDTA post-treatment on EMS mutagenesis in soybean  

Microsoft Academic Search

Seeds of soybean cultivar LD4 were mutagenically treated with EMS (0.3, 0.5, 0.6, 0.9, 0.5 and 1.8%) for 3 h only or plus caffeine (50 mM) or EDTA (1 mM) post-treatment for 5 h. The experimental results indicated that: (1) of the different concentrations of EMS treatment, the M2 mutation frequency induced with 0.6% EMS was the highest (9.7%). When

Zhu Baoge; Gu Aiqiu; Deng Xiangdong; Deng Yuxuan; Lu Zixian

1995-01-01

193

Um Framework para Proviso de QoS em Redes Mveis Sem Fio1  

E-print Network

Um Framework para Provisão de QoS em Redes Móveis Sem Fio1 Luciana dos Santos Lima, Antônio Tadeu A provisão de QoS em redes móveis sem fio integrando soluções isoladas encontradas na literatura. Esses descrita através de um cenário simulado em que serviços integrados são oferecidos sobre uma rede IP Móvel

Colcher, Sérgio

194

Centro de Cincias Agrrias Coordenao do Curso de Graduao em Cincia e Tecnologia de Alimentos  

E-print Network

Centro de Ciências Agrárias Coordenação do Curso de Graduação em Ciência e Tecnologia de Alimentos-2728 Regimento Interno do Curso de Graduação em Ciência e Tecnologia de alimentos Capítulo I ­ Das disposições iniciais Art. 1º - O Curso de Graduação em Ciência e Tecnologia de Alimentos, instituído pela Resolução 005

Floeter, Sergio Ricardo

195

User's guide for the PWR LOCA analysis capability of the WRAP-EM system  

SciTech Connect

The Water Reactor Analysis Package (WRAP) has been expanded to provide the capability to analyze loss-of-coolant accidents (LOCAs) in both pressurized water reactors (PWRs) and boiling water reactors (BWRs) by using evaluation models (EMs). The input specifications for modules in the WRAP-EM system are presented in this document along with the JOSHUA input templates. This document, along with the WRAP user's guide, provides a step-by-step procedure for setting up a PWR data base for the WRAP-EM system. 12 refs.

Beranek, F; Gregory, M V

1980-02-01

196

UFF/PROGEPE/CASQ/DPVS Diviso de Promoo e Vigilncia em Sade-DPVS  

E-print Network

considerado uma das principais causas de morte evitável. No mundo, cerca de 1,3 bilhões de pessoas são considerado como a terceira maior causa de morte evitável aumentando a morbidade em crianças por doenças respiratórias e em cinco vezes o risco de morte súbita em bebês. A atual Portaria Nº 3 de 25 de março de 2013 da

Souza, Max O.

197

Investigating the source of contaminated plumes downstream of the Alborz Sharghi coal washing plant using EM34 conductivity data, VLF-EM and DC-resistivity geophysical methods  

NASA Astrophysics Data System (ADS)

Coal washing factories may create serious environmental problems due to pyrite oxidation and acid mine drainage generation from coal waste piles on nearby land. Infiltration of pyrite oxidation products through the porous materials of the coal waste pile by rainwater cause changes in the conductivity of underground materials and groundwater downstream of the pile. Electromagnetic and electrical methods are effective for investigation and monitoring of the contaminated plumes caused by coal waste piles and tailings impoundments. In order to investigate the environmental impact from a coal waste pile at the Alborz Sharghi coal washing plant, an EM34 ground conductivity meter was used on seven parallel lines in an E-W direction, downstream of the waste pile. Two-dimensional resistivity models obtained by the inversion of EM34 conductivity data identified conductive leachate plumes. In addition, quasi-3D inversion of EM34 data has confirmed the decreasing resistivity at depth due to the contaminated plumes. Comparison between EM34, VLF and DC-resistivity datasets, which were acquired for similar survey lines, agree well in identifying changes in the resistivity trend. The EM34 and DC-resistivity sections have greater similarity and better smoothness rather than those of the VLF model. Two-dimensional inversion models of these methods have shown some contaminated plumes with low resistivity.

Shiraz, Farzin Amirkhani; Ardejani, Faramarz Doulati; Moradzadeh, Ali; Arab-Amiri, Ali Reza

2013-01-01

198

Mars' Magnetic Atmosphere: Ionospheric Currents, Lightning (or not), E&M; Subsurface Sounding, and Future Missions  

NASA Astrophysics Data System (ADS)

Mars' ionosphere has no obvious magnetic signs of large-scale, dust-produced lightning. However, there are numerous interesting ionospheric currents (some associated with crustal magnetic fields) which would allow for E&M; subsurface sounding.

Espley, J. R.; Connerney, J. E. P.

2014-07-01

199

Cryo-EM of macromolecular assemblies at near-atomic resolution.  

PubMed

With single-particle electron cryomicroscopy (cryo-EM), it is possible to visualize large, macromolecular assemblies in near-native states. Although subnanometer resolutions have been routinely achieved for many specimens, state of the art cryo-EM has pushed to near-atomic (3.3-4.6 ) resolutions. At these resolutions, it is now possible to construct reliable atomic models directly from the cryo-EM density map. In this study, we describe our recently developed protocols for performing the three-dimensional reconstruction and modeling of Mm-cpn, a group II chaperonin, determined to 4.3 resolution. This protocol, utilizing the software tools EMAN, Gorgon and Coot, can be adapted for use with nearly all specimens imaged with cryo-EM that target beyond 5 resolution. Additionally, the feature recognition and computational modeling tools can be applied to any near-atomic resolution density maps, including those from X-ray crystallography. PMID:20885381

Baker, Matthew L; Zhang, Junjie; Ludtke, Steven J; Chiu, Wah

2010-09-01

200

Analysis of the electrochemistry of hemes with Ems spanning 800 mV  

PubMed Central

The free energy of heme reduction in different proteins is found to vary over more than 18 kcal/mol. It is a challenge to determine how proteins manage to achieve this enormous range of Ems with a single type of redox cofactor. Proteins containing 141 unique hemes of a-, b-, and c-type, with bis-His, His-Met, and aquo-His ligation were calculated using Multi-Conformation Continuum Electrostatics (MCCE). The experimental Ems range over 800 mV from ?350 mV in cytochrome c3 to 450 mV in cytochrome c peroxidase (vs. SHE). The quantitative analysis of the factors that modulate heme electrochemistry includes the interactions of the heme with its ligands, the solvent, the protein backbone, and sidechains. MCCE calculated Ems are in good agreement with measured values. Using no free parameters the slope of the line comparing calculated and experimental Ems is 0.73 (R2 = 0.90), showing the method accounts for 73% of the observed Em range. Adding a +160 mV correction to the His-Met c-type hemes yields a slope of 0.97 (R2 = 0.93). With the correction 65% of the hemes have an absolute error smaller than 60 mV and 92% are within 120 mV. The overview of heme proteins with known structures and Ems shows both the lowest and highest potential hemes are c-type, whereas the b-type hemes are found in the middle Em range. In solution, bis-His ligation lowers the Em by ?205 mV relative to hemes with His-Met ligands. The bis-His, aquo-His, and His-Met ligated b-type hemes all cluster about Ems which are ?200 mV more positive in protein than in water. In contrast, the low potential bis-His c-type hemes are shifted little from in solution, whereas the high potential His-Met c-type hemes are raised by ?300 mV from solution. The analysis shows that no single type of interaction can be identified as the most important in setting heme electrochemistry in proteins. For example, the loss of solvation (reaction field) energy, which raises the Em, has been suggested to be a major factor in tuning in situ Ems. However, the calculated solvation energy vs. experimental Em shows a slope of 0.2 and R2 of 0.5 thus correlates weakly with Ems. All other individual interactions show even less correlation with Em. However the sum of these terms does reproduce the range of observed Ems. Therefore, different proteins use different aspects of their structures to modulate the in situ heme electrochemistry. This study also shows that the calculated Ems are relatively insensitive to different heme partial charges and to the protein dielectric constant used in the simulation. PMID:19003997

Zheng, Zhong; Gunner, M. R.

2009-01-01

201

METODOLOGIAS LIMPAS PARA DETERMINAO DE ACARES TOTAIS EM CAF CRU EMPREGANDO ALGORITMOS GENTICOS  

E-print Network

Instituto de Tecnologia de Alimentos, 6 Faculdade de Engenharia de Alimentos - UNICAMP, 7 Instituto de a quantificação dos teores de lipídios em alimentos. FAPERGS, EMBRAPA, PROGRUPE-UNISC e FUNDAP-UNISC #12;

Ferreira, Márcia M. C.

202

Histrico demogrfico e filogeografia em populaes brasileiras de Ardea alba egretta.  

E-print Network

??Foram estudadas populaes de Ardea alba egretta (gara-branca-grande) da famlia Ardeidae (Aves), amostradas em quatro regies brasileiras, com latitudes diferentes (Rio Grande do Sul, Pantanal, (more)

Thas Camilo Corra

2009-01-01

203

EM-MAC: A Dynamic Multichannel Energy-Efficient MAC Protocol for Wireless Sensor Networks  

E-print Network

-up scheduling. EM-MAC substantially enhances wireless channel uti- lization and transmission efficiency while resisting wireless inter- ference and jamming by enabling every node to dynamically op- timize the selection

Shihada, Basem

204

V.S. Ramachandran and E.M. Hubbard The Phenomenology of Synaesthesia  

E-print Network

V.S. Ramachandran and E.M. Hubbard The Phenomenology of Synaesthesia Abstract: This article the phenomenology of synaesthesia in greater detail, raise several new questions that have emerged from recent

Ramachandran, Vilayanur S.

205

EMDataBank.org: unified data resource for CryoEM  

PubMed Central

Cryo-electron microscopy reconstruction methods are uniquely able to reveal structures of many important macromolecules and macromolecular complexes. EMDataBank.org, a joint effort of the Protein Data Bank in Europe (PDBe), the Research Collaboratory for Structural Bioinformatics (RCSB) and the National Center for Macromolecular Imaging (NCMI), is a global one-stop shop resource for deposition and retrieval of cryoEM maps, models and associated metadata. The resource unifies public access to the two major archives containing EM-based structural data: EM Data Bank (EMDB) and Protein Data Bank (PDB), and facilitates use of EM structural data of macromolecules and macromolecular complexes by the wider scientific community. PMID:20935055

Lawson, Catherine L.; Baker, Matthew L.; Best, Christoph; Bi, Chunxiao; Dougherty, Matthew; Feng, Powei; van Ginkel, Glen; Devkota, Batsal; Lagerstedt, Ingvar; Ludtke, Steven J.; Newman, Richard H.; Oldfield, Tom J.; Rees, Ian; Sahni, Gaurav; Sala, Raul; Velankar, Sameer; Warren, Joe; Westbrook, John D.; Henrick, Kim; Kleywegt, Gerard J.; Berman, Helen M.; Chiu, Wah

2011-01-01

206

Histria da cincia no estudo de modelos atmicos em livros didticos de qumica.  

E-print Network

??Dissertao (mestrado)Universidade de Braslia, Faculdade de Educao, Programa de Ps-Graduao em Educao, 2011. Esta dissertao tem por objetivo identificar a Histria da Cincia apresentada nos (more)

Chaves, Lgia Maria Martinho Pereira

2011-01-01

207

Reserva de Recursos e Qualidade de Servio em Redes de Computadores de Dbito Elevado  

E-print Network

Reserva de Recursos e Qualidade de Serviço em Redes de Computadores de Débito Elevado Elisabete trabalho insere-se na área das redes de comunicação de alta velocidade com garantia de qualidade de serviço desenvolvimento e a integração de mecanismos de garantia de qualidade de serviço (QoS) em protocolos de rede e de

Monteiro, Edmundo

208

ARTIGO INTERNET Bioengenharia de Clulas Estaminais e Redes de Comunicaes em debate  

E-print Network

NewsSearch ARTIGO INTERNET Bioengenharia de Células Estaminais e Redes de Comunicações em debate://www.cienciapt.net/pt/in ... Bioengenharia de Células Estaminais e Redes de Comunicações em debate no IST Taguspark Com o objectivo de tecnológicas de vanguarda. Temáticas como a Bioengenharia de Células Estaminais, Redes de Comunicações, Gestão

Instituto de Sistemas e Robotica

209

SciMulator: Um Ambiente de Simulao de Workflows Cientficos em Redes P2P*  

E-print Network

SciMulator: Um Ambiente de Simulação de Workflows Científicos em Redes P2P* Jonas Dias1 , Carla desempenho ao utilizar a arquitetura SciMule para submissão de atividades de workflows científicos em redes P, equipe associada. VI Workshop de Redes Dinâmicas e Sistemas Peer-to-Peer 45 lirmm-00641030,version1-14Nov

Paris-Sud XI, Université de

210

Desenho e Avaliao do sistema BOA com base em Padres de Interfaces Sociais  

E-print Network

Desenho e Avaliação do sistema BOA com base em Padrões de Interfaces Sociais Alberto Rodrigues da-aprendizagem, como é o caso da plataforma Bolsa de Objectos de Aprendizagem (BOA). Este trabalho surge no seguimento dinamização e participação em comunidades suportadas pelo BOA. Este artigo, baseando-se na análise da

da Silva, Alberto Rodrigues

211

Circular Polarization Fractal Koch microstrip patch Antenna using single-fed EM coupled ring Resonators  

Microsoft Academic Search

This paper describes the design and analysis of a Circular Polarization Fractal Koch Antenna using single-fed electromagnetic (EM) coupled ring resonator at 2.4 GHz. By applying fractal Koch, the proposed antenna size is reduced about 5% compared to the square patch using single-fed EM coupled ring resonator antenna. The simulation process has been done by CST software. Simulation as well

M. A. M. Yusop; M. K. A. Rahim; M. F. Ismail; A. Wahid

2010-01-01

212

PROCEDIMENTOS PARA RECOLHIMENTO DE VALORES REFERENTES INSCRIO EM PROCESSOS SELETIVOS DOS CURSOS DE MESTRADO E DOUTORADO  

E-print Network

) 6) Competência: mês/ano do pagamento; 7) Vencimento: dia/mês/ano do pagamento; 8) CNPJ/CPF do interessado; 9) Nome do interessado; 12) Emitir GRU; 13) Imprimir; 14) Pagamento no Banco do Brasil em a impressão para posterior pagamento no Banco do Brasil. 4. Esta ordem de serviço entra em vigor a partir de

Paraná, Universidade Federal do

213

UNIVERSIDADE FEDERAL FLUMINENSE COORDENAO DE PS-GRADUAO EM ENFERMAGEM DO TRABALHO  

E-print Network

perante o Consulado do Brasil em seu País. Exige-se do candidato estrangeiro o Certificado de Proficiência carteira do Conselho Regional de Enfermagem ou franquia provisória; · Fotocópia do CPF (para brasileiros ou recolhida em: BANCO DO BRASIL ­ 3. DA SELE??O: 3.1 Análise do Curriculum Vitae Observação: a) A nota mínima

Souza, Max O.

214

Seminario Informal (mas Formal!) 2006 Estrategias da Teoria de Reescrita em PVS  

E-print Network

4o Semin´ario Informal (mas Formal!) 2006 Estrat´egias da Teoria de Reescrita em PVS: considerac Teoria da Computac¸ ~ao Campus de Catal~ao & Departamento de Matem´atica Universidade Federal de Goi. A especificac¸ ~ao em PVS ´e organizada como uma colec¸ ~ao de Teorias. Uma Teoria ´e essencialmente feita de

Ayala-Rincón, Mauricio

215

Examination on Temperature Distribution of a Pyramidal EM-wave Absorber Under High Power Injection  

Microsoft Academic Search

In this research, temperature distribution of a pyramidal EM-absorber under high power injection is computed by a coupled method called FDTD-SIMPLE-MR method. In this method, both electromagnetic field and all the heat transmission phenomena such as heat transportation, heat transfer by air convention and heat radiation can be calculated. Moreover, temperature distribution of a pyramidal EM-absorber is examined experimentally by

Tetsuhiro Sasagawa; O. Hashimoto; S. Watanabe; T. Saito; H. Kurihara

2007-01-01

216

Self-assembled monolayers improve protein distribution on holey carbon cryo-EM supports  

PubMed Central

Poor partitioning of macromolecules into the holes of holey carbon support grids frequently limits structural determination by single particle cryo-electron microscopy (cryo-EM). Here, we present a method to deposit, on gold-coated carbon grids, a self-assembled monolayer whose surface properties can be controlled by chemical modification. We demonstrate the utility of this approach to drive partitioning of ionotropic glutamate receptors into the holes, thereby enabling 3D structural analysis using cryo-EM methods. PMID:25403871

Meyerson, Joel R.; Rao, Prashant; Kumar, Janesh; Chittori, Sagar; Banerjee, Soojay; Pierson, Jason; Mayer, Mark L.; Subramaniam, Sriram

2014-01-01

217

Acceleration of germination of super-hard rice cultivar EM10 by soaking with red onion.  

PubMed

Red onion accelerated the germination of rice seeds and inhibited microbial infestation during germination. After germination with red onion for 16 h at 35 C, super-hard rice EM10 showed a higher germination ratio (2.3 times), and it contained more GABA (2.3 times) and glucose (2.9 times) than that soaked without onion. Due to soaking with red onion, germinated EM10 was fortified with quercetin (18 mg/100 g). PMID:21389608

Nakamura, Sumiko; Ohtsubo, Ken'ichi

2011-01-01

218

leos essenciais no controle ps-colheita de Colletotrichum gloeosporioides em mamo  

Microsoft Academic Search

RESUMO: Os subprodutos de plantas medicinais tm sido estudados como uma alternativa para o controle de doenas de plantas visando amenizar e\\/ou reduzir o uso abusivo de agrotxicos, principalmente em condies ps-colheita. Assim, este trabalho teve como objetivo avaliar, in vitro e in vivo, o controle de Colletotrichum gloeosporioides, agente causal da antracnose do mamo em ps-colheita, por leos essenciais

219

Fast, simultaneous and robust VLF-EM data denoising and reconstruction via multivariate empirical mode decomposition  

NASA Astrophysics Data System (ADS)

The measurement of Very Low Frequency Electromagnetic (VLF-EM) is important in many different applications, i.e, environmental, archeological, geotechnical studies, etc. In recent years, improving and enhancing VLF-EM data containing complex numbers (bivariate) was presented by several authors in order to produce reliable models, generally using univariate empirical mode decomposition (EMD). Applying univariate EMD separately on each data is problematic. This results in a different number of misaligned Intrinsic Mode Functions (IMFs) which can complicate the selection of some IMFs for denoising process. Thus, a filtering method based on the multivariate empirical mode decomposition (MEMD) approach to decompose simultaneously bivariate data is proposed. In this paper we address two issues by employing the recently introduced noise assisted MEMD (N-A MEMD) for improving bivariate VLF-EM data. Firstly, the N-A MEMD to decompose bivariate measurement of the VLF-EM data into IMFs and a residue is defined as VLF-EM signal or unwanted noise. Secondly, the proposed method is used to enhance VLF-EM data and to reject unwanted noise. Finally, the proposed method is applied to a synthetic data with two added sinusoids. To demonstrate the robustness of the N-A MEMD method, the method was tested on added-noise synthetic data sets and the results were compared to the Ensemble EMD (EEMD) and Bivariate EMD (BEMD). The N-A MEMD gave more robust and accurate results than the EEMD and BEMD methods and the method required less CPU time to obtain the IMFs compared to EEMD. The method was also tested on several field data sets. The results indicate that the filtered VLF-EM data based on the N-A MEMD make the data easier to interpret and to be analyzed further. In addition, the 2D resistivity profile estimated from the inversion of filtered VLF-EM data results was appropriate to the geological condition.

Sungkono; Bahri, Ayi S.; Warnana, Dwa D.; Monteiro Santos, Fernando A.; Santosa, Bagus J.

2014-06-01

220

UNIVERSIDADE DE BRASLIA PROGRAMA DE PS-GRADUAO EM NANOCINCIA E NANOBIOTECNOLOGIA  

E-print Network

Lunardi Gomes M/D clunardi@unb.br Denilson Rabelo M/D denilson@quimica.ufg.br Emília Celma de Oliveira Pereira Garcia M mgarcia@unb.br Patricia P. Confessori Sartoratto M/D patricia@quimica.ufg.br Paulo César@if.ufg.br Claure Nain Lunardi Gomes M/D clunardi@unb.br Denilson Rabelo M/D denilson@quimica.ufg.br Emília Celma de

Maier, Rudolf Richard

221

INPE-12145-TDI/969 ANLISE DE EPISDIOS DE TORNADO EM SANTA CATARINA  

E-print Network

INPE-12145-TDI/969 ANÁLISE DE EPIS?DIOS DE TORNADO EM SANTA CATARINA: CARACTERIZA??O SIN?TICA E. Análise de episódios de tornados em Santa Catarina: caracterização sinótica e mineração de dados / I. P. O. Marcelino. ­ São José dos Campos: INPE, 2003. 223p. ­ (INPE-12145-TDI/969). 1.Tornados. 2.Tempestades

222

Inactivation of the Cystatin E/M Tumor Suppressor Gene in Cervical Cancer  

PubMed Central

We have previously localized a cervical cancer tumor suppressor gene to a 300 kb interval of 11q13. Analysis of candidate genes revealed loss of expression of cystatin E/M, a lysosomal cysteine protease inhibitor, in 6 cervical cancer cell lines and 9 of 11 primary cervical tumors. Examination of the three exons in four cervical cancer cell lines, 19 primary tumors, and 21 normal controls revealed homozygous deletion of exon 1 sequences in one tumor. Point mutations were observed in six other tumors. Two tumors contained mutations at the consensus binding sites for cathepsin L, a lysosomal protease over-expressed in cervical cancer. Introduction of these two point mutations using site directed mutagenesis resulted in reduced binding of mutated cystatin E/M to cathepsin L. Although mutations were not observed in any cell lines, four cell lines and 12 of 18 tumors contained promoter hypermethylation. Re-expression of cystatin E/M was observed after 5?aza 2-deoxycytidiene and/or Trichostatin A treatment of cervical cancer cell lines, HeLa and SiHa, confirming promoter hypermethylation. Ectopic expression of cystatin E/M in these two cell lines resulted in growth suppression. There was also suppression of soft agar colony formation by HeLa cells expressing the cystatin E/M gene. Re-expression of cystatin E/M resulted in decreased intracellular and extracellular expression of cathepsin L. Over-expression of cathepsin L resulted in increased cell growth which was inhibited by the reintroduction of cystatin E/M. We conclude, therefore, that cystatin E/M is a cervical cancer suppressor gene and that the gene is inactivated by somatic mutations and promoter hypermethylation. PMID:18506750

Veena, Mysore S.; Lee, Grant; Keppler, Daniel; Mendonca, Marc S.; Redpath, J. Leslie; Stanbridge, Eric J.; Wilczynski, Sharon P.; Srivatsan, Eri S.

2010-01-01

223

AlmAnAc SUPPlEmEnT may 16, 1995 S-Making Connections  

E-print Network

AlmAnAc SUPPlEmEnT may 16, 1995 S- Making Connections Building Penn's electronic future Information #12;AlmAnAc SUPPlEmEnT may 16, 1995S- Abstract This statement of direction moves Penn toward a future and Computing, at may@pobox.upenn.edu or 5/898-0005. ©1995 Trustees of the University of Pennsylvania #12;AlmAnAc

Sharp, Kim

224

Colquio em homenagem ao centenrio da morte de Henri Poincar Rio de Janeiro  

E-print Network

Colóquio em homenagem ao centenário da morte de Henri Poincaré Rio de Janeiro 27 a 30 de novembro Henri Poincaré (Université Nancy 2) Em 2012, ocorrerá o primeiro centenário da morte do matemático morte de Poincaré, além de ser uma merecida homenagem a um cientista-filósofo, cujas idéias ainda hoje

Solodov, Mikhail V.

225

USING A HELICOPTER-BORNE EM-INDUCTION SYSTEM TO VALIDATE RADARSAT SEA ICE SIGNATURES  

Microsoft Academic Search

Field surveys over the past several winters in the Gulf of St. Lawrence and off Labrador use helicopter-borne sensors to validate SAR ice signatures in RADARSAT imagery. Ice-plus- snow thickness profiles were collected using an electromagnetic (EM) induction system towed 15-25m above the ice surface by helicopter. Measurements from the laser altimeter contained in the EM system were high-pass filtered

I. K. Peterson; S. J. Prinsenberg; J. S. Holladay

226

Tide-driven fluid mud transport in the Ems estuary  

NASA Astrophysics Data System (ADS)

The Ems estuary, located at the border between The Netherlands and Germany, experienced a significant change of the hydrodynamic regime during the past decades, as a result of extensive river engineering. With the net sediment transport now being flood-oriented, suspended sediment concentrations have increased dramatically, inducing siltation and formation of fluid mud layers, which, in turn, influence hydraulic flow properties, such as turbulence and the apparent bed roughness. Here, the process-based understanding of fluid mud is essential to model and predict mud accumulation, not only regarding the anthropogenic impact, but also in view of the expected changes of environmental boundary conditions, i.e., sea level rise. In the recent past, substantial progress has been made concerning the understanding of estuarine circulation and influence of tidal asymmetry on upstream sediment accumulation. While associated sediment transport formulations have been implemented in the framework of numerical modelling systems, in-situ data of fluid mud are scarce. This study presents results on tide-driven fluid mud dynamics, measured during four tidal cycles aside the navigation channel in the Ems estuary. Lutoclines, i.e., strong vertical density gradients, were detected by sediment echo sounder (SES). Acoustic Doppler current profiles (ADCP) of different acoustic frequencies were used to determine hydrodynamic parameters and the vertical distribution of suspended sediment concentrations in the upper part of the water column. These continuous profiling measurements were complemented by CTD, ADV, and OBS casts. SES and ADCP profiles show cycles of fluid mud entrainment during accelerating flow, and subsequent settling, and the reformation of a lutocline during decelerating flow and slack water. Significant differences are revealed between flood and ebb phase. Highest entrainment rates are measured at the beginning of the flood phase, associated with strong current shear and rapid vertical mixing, inducing the highest instantaneous suspended sediment flux measured during the tidal cycle. During decelerating flood currents a lutocline is again established at a certain distance above the consolidated river bed. During slack water after the flood phase the concentration gradient increases and the thickness of the fluid mud layer below is constant, also during a significant part of the ebb phase. As water depth decreases during ebb, entrainment occurs only at the upper part of the fluid mud layer. The suspended sediment flux is low compared to the flood phase. These observations are further elaborated using turbulence parameters obtained from ADV and ADCP, explaining the difference between ebb and flood concerning the vertical location of the maximum concentration gradient. This study is funded through DFG-Research Center / Excellence Cluster "The Ocean in the Earth System". The Senckenberg Institute and the Federal Waterways Engineering and Research Institute are acknowledged for technical support.

Becker, Marius; Maushake, Christian; Winter, Christian

2014-05-01

227

New Developments in the Technology Readiness Assessment Process in US DOE-EM - 13247  

SciTech Connect

A Technology Readiness Assessment (TRA) is a systematic, metric-based process and accompanying report that evaluates the maturity of the technologies used in systems; it is designed to measure technology maturity using the Technology Readiness Level (TRL) scale pioneered by the National Aeronautics and Space Administration (NASA) in the 1980's. More recently, DoD has adopted and provided systematic guidance for performing TRAs and determining TRLs. In 2007 the GAO recommended that the DOE adopt the NASA/DoD methodology for evaluating technology maturity. Earlier, in 2006-2007, DOE-EM had conducted pilot TRAs on a number of projects at Hanford and Savannah River. In March 2008, DOE-EM issued a process guide, which established TRAs as an integral part of DOE-EM's Project Management Critical Decision Process. Since the development of its detailed TRA guidance in 2008, DOE-EM has continued to accumulate experience in the conduct of TRAs and the process for evaluating technology maturity. DOE has developed guidance on TRAs applicable department-wide. DOE-EM's experience with the TRA process, the evaluations that led to recently developed proposed revisions to the DOE-EM TRA/TMP Guide; the content of the proposed changes that incorporate the above lessons learned and insights are described. (authors)

Krahn, Steven [Department of Civil and Environmental Engineering, Vanderbilt University, Nashville, TN, 37235 (United States)] [Department of Civil and Environmental Engineering, Vanderbilt University, Nashville, TN, 37235 (United States); Sutter, Herbert [Consultant, 910 Laurel Green Dr., North Canton, OH, 44720 (United States)] [Consultant, 910 Laurel Green Dr., North Canton, OH, 44720 (United States); Johnson, Hoyt [DOE-EM, 1000 Independence Ave., Washington, DC, 20585 (United States)] [DOE-EM, 1000 Independence Ave., Washington, DC, 20585 (United States)

2013-07-01

228

Mutagenic effectiveness and efficiency of EMS, DES and gamma-rays in rice.  

PubMed

Data on chlorophyll mutation frequency after treatment with EMS, DES and gamma-rays and sequential administration of gamma-rays and the two alkylating agents in three varieties of rice have been used to work out quantitatively the effectiveness and efficiency of each mutagen and combination treatment. For effectiveness, the order is EMS > DES and for efficiency it is EMS > DES > gamma-rays. In some sequential treatments (Gamma-rays + DES in 'IR8' and 'Basmati'; DES + gamma-rays in 'IR8' and 'Jhona'; Gamma-rays + EMS in 'IR8' and 'Basmati'; and EMS + gamma-rays in 'IR8', 'Jhona' and 'Basmati') mutation frequency is more than additive (synergistic) but these treatments are decisively less efficient because of their relatively high injurious effects in the M1. generation. EMS induces more albinas than gamma-rays do. The mutational spectrum patterns induced by gamma-rays and DES are alike. In general, combination treatments tend to increase the frequency of albinas over other types of chlorophyll mutants. PMID:24407841

Kaul, M L; Bhan, A K

1977-09-01

229

Anisotropic 3D inversion of towed streamer EM data from the Troll West oil province (Invited)  

NASA Astrophysics Data System (ADS)

Obviating the need for ocean bottom receivers, the towed streamer EM system enables CSEM data to be acquired simultaneously with seismic over very large areas in frontier and mature basins for higher production rates and more cost effective than conventional marine CSEM. The towed streamer EM data are currently processed and delivered as a spectrum of frequency-domain responses. We apply a 3D anisotropic inversion methodology for towed streamer EM data that includes a moving sensitivity domain. Our implementation is based on the 3D contraction integral equation method for computing the EM responses and Frchet derivatives, and uses the re-weighted regularized conjugate gradient method for minimizing the objective functional with focusing regularization. We present an actual case study for the 3D anisotropic inversion of towed streamer EM data from the Troll West oil province in the North Sea, and demonstrate our ability to image the Troll West Oil and Gas Provinces. We conclude that 3D anisotropic inversion of the data from the current generation of towed streamer EM system can adequately recover both the vertical and horizontal resistivities in anisotropic hydrocarbon-bearing formations.

Mattsson, J.; Midgley, J.; Zhdanov, M. S.; ENDO, M.

2013-12-01

230

EM modeling for GPIR using 3D FDTD modeling codes  

SciTech Connect

An analysis of the one-, two-, and three-dimensional electrical characteristics of structural cement and concrete is presented. This work connects experimental efforts in characterizing cement and concrete in the frequency and time domains with the Finite Difference Time Domain (FDTD) modeling efforts of these substances. These efforts include Electromagnetic (EM) modeling of simple lossless homogeneous materials with aggregate and targets and the modeling dispersive and lossy materials with aggregate and complex target geometries for Ground Penetrating Imaging Radar (GPIR). Two- and three-dimensional FDTD codes (developed at LLNL) where used for the modeling efforts. Purpose of the experimental and modeling efforts is to gain knowledge about the electrical properties of concrete typically used in the construction industry for bridges and other load bearing structures. The goal is to optimize the performance of a high-sample-rate impulse radar and data acquisition system and to design an antenna system to match the characteristics of this material. Results show agreement to within 2 dB of the amplitudes of the experimental and modeled data while the frequency peaks correlate to within 10% the differences being due to the unknown exact nature of the aggregate placement.

Nelson, S.D.

1994-10-01

231

Exact solution of the EM radiation-reaction problem for classical finite-size and Lorentzian charged particles  

Microsoft Academic Search

.An exact solution is given to the classical electromagnetic (EM) radiation-reaction (RR) problem, originally posed by Lorentz.\\u000a This refers to the dynamics of classical non-rotating and quasi-rigid finite-size particles subject to an external prescribed\\u000a EM field. A variational formulation of the problem is presented. It is shown that a covariant representation for the EM potential\\u000a of the self-field generated by

C. Cremaschini; M. Tessarotto

2011-01-01

232

Rock 'Em, Sock 'Em!  

ERIC Educational Resources Information Center

K-12-level competitive robotics is growing in popularity around the country and worldwide. According to one of the leading organizers of these events, FIRST--For Inspiration and Recognition of Science and Technology--250,000 students from 56 countries take part in its competitions. FIRST Tech Challenge (FTC) is a yearly event the organization puts

Waters, John K.

2011-01-01

233

Accurate 2D/3D electromagnetic modeling for time-domain airborne EM systems  

NASA Astrophysics Data System (ADS)

The existing industry software cannot deliver correct results for 3D time-domain airborne EM responses. In this paper, starting from the Fourier transform and convolution, we compare the stability of different modeling techniques and analyze the reason for instable calculations of the time-domain airborne EM responses. We find that the singularity of the impulse responses of EM systems at very early time that are used in the convolution is responsible for the instability of the modeling (Fig.1). Based on this finding, we put forward an algorithm that uses step response rather than impulse response of the airborne EM system for the convolution and create a stable algorithm that delivers precise results and maintains well the integral/derivative relationship between the magnetic field B and the magnetic induction dB/dt. A three-step transformation procedure for the modeling is proposed: 1) output the frequency-domain EM response data from the existing software; 2) transform into step-response by digital Fourier/Hankel transform; 3) convolve the step response with the transmitting current or its derivatives. The method has proved to be working very well (Fig. 2). The algorithm can be extended to the modeling of other time-domain ground and airborne EM system responses.Fig. 1: Comparison of impulse and step responses for an airborne EM system Fig. 2: Bz and dBz/dt calculated from step (middle panel) and impulse responses (lower panel) for the same 3D model as in Fig.1.

Yin, C.; Hodges, G.

2012-12-01

234

Electrokinetic effect combined with surface-charge assumption: a possible generation mechanism of coseismic EM signals  

NASA Astrophysics Data System (ADS)

According to field observations, electromagnetic (EM) signals accompanying seismic waves can be recorded. The orders of magnitude of observed coseismic electric and magnetic signals associated with earthquakes are usually around 1 to 101 mV km-1 and 10-2 to 1 nT, respectively. In this paper, we carry out numerical simulation of coseismic EM signals associated with seismic waves due to electrokinetic effect and compare with field observations. The seismic source is represented by a finite fault measuring 15 9 km2 with a max slip displacement 1.5 m, corresponding to a Mw 5.9 earthquake. While using the EM surface boundary condition of continuous horizontal EM components, the magnetic signals only accompany the late-arriving S waves at receiver near the ground surface. This is obviously different from field observations. Thus, we adopt another EM surface boundary condition which assumes the ground surface carries surface charge. For the used half-space model, a surface-charge density magnitude |Qsc| in excess of 10-4 C m-2 is sufficient to make horizontal magnetic components clearly show up at the whole time duration of seismic waves. When |Qsc| increases, the contribution of surface-charge density to coseismic EM signals becomes more and more dominant comparing with that of the seismically induced streaming-current. We estimate the Qsc expected at the Earth's surface might be a value between -5 10-4 and -0.1 C m-2 by the comparison between numerical results and field observations. The vertical magnetic signals only accompany the late-arriving seismic waves, because they are theoretically only induced by SH wave. The field observation results of vertical magnetic signals may be resulted from the scattering effect or the seismic dynamo effect. We conclude that electrokinetic effect combined with surface-charge assumption is one possible generation mechanism of the observed coseismic EM signals.

Ren, Hengxin; Wen, Jian; Huang, Qinghua; Chen, Xiaofei

2015-02-01

235

Estudo de solues locais e cosmolgicas em teorias do tipo tensor-escalar  

NASA Astrophysics Data System (ADS)

Teorias do tipo tensor-escalar so a mais simples extenso poss vel da Relatividade Geral. Nessas teorias, cujo modelo padro a teoria de Brans-Dicke, a curvatura do espao-tempo, descrita por componentes tensoriais, aparece acoplada a um campo escalar que, de certo modo, representa uma variao na constante de acoplamento da gravitao. Tais teorias apresentam solues locais e cosmolgicas que, em determinados limites, recaem nas apresentadas pela Relatividade Geral, mas que em outros limites trazem novidades, tais como conseqncias observacionais da evoluo de flutuaes primordiais distintas daquelas previstas pela Relatividade Geral (ver, por ex., Nagata et al., PRD 66, p. 103510 (2002)). Graas a esta possibilidade de trazer luz novidades em relao gravitao, teorias do tipo tensor-escalar podem ser vistas como um interessante campo alternativo de pesquisas para solues dos problemas de massa faltante (ou escura) e/ou energia escura. Seguindo tal linha, este trabalho, ainda em sua fase inicial, apresenta solues gerais de teorias do tipo tensor-escalar para diversas situaes, verificando-se em que consiste a divergncia dessas solues dos casos tradicionais poss veis na Relatividade Geral. Como exemplos das solues aqui apresentadas pode-se destacar uma expresso geral para diferentes solues cosmolgicas englobando diferentes tipos de matria (representados por diferentes equaes de estado), e a expresso para uma soluo local representando um buraco negro com rotao, similar soluo de Kerr da Relatividade Geral. Por fim, importante ressaltar que, embora aqui apresentem-se poucos resultados novos, na literatura sobre o assunto a maior parte das solues apresentadas limita-se a uns poucos casos espec ficos, tal como solues cosmolgicas apenas com curvatura nula, e que mesmo as solues dispon veis so, em geral, pouco divulgadas e, portanto, pouco conhecidas, e tal situao que este trabalho busca, em parte, reverter.

Silva E Costa, S.

2003-08-01

236

EM-54 Technology Development In Situ Remediation Integrated Program. Annual report  

SciTech Connect

The Department of Energy (DOE) established the Office of Technology Development (EM-50) as an element of Environmental Restoration and Waste Management (EM) in November 1989. EM manages remediation of all DOE sites as well as wastes from current operations. The goal of the EM program is to minimize risks to human health, safety and the environment, and to bring all DOE sites into compliance with Federal, state, and local regulations by 2019. EM-50 is charged with developing new technologies that are safer, more effective and less expensive than current methods. The In Situ Remediation Integrated Program (the subject of this report) is part of EM-541, the Environmental Restoration Research and Development Division of EM-54. The In Situ Remediation Integrated Program (ISR IP) was instituted out of recognition that in situ remediation could fulfill three important criteria: Significant cost reduction of cleanup by eliminating or minimizing excavation, transportation, and disposal of wastes; reduced health impacts on workers and the public by minimizing exposure to wastes during excavation and processing; and remediation of inaccessible sites, including: deep subsurfaces; in, under, and around buildings. Buried waste, contaminated soils and groundwater, and containerized wastes are all candidates for in situ remediation. Contaminants include radioactive wastes, volatile and non-volatile organics, heavy metals, nitrates, and explosive materials. The ISR IP tends to facilitate development of in situ remediation technologies for hazardous, radioactive, and mixed wastes in soils, groundwater, and storage tanks. Near-term focus is on containment of the wastes, with treatment receiving greater effort in future years.

Not Available

1993-08-01

237

Canibalismo em fmeas de camundongo swiss expostas irradiao ionizante durante a prenhez: alteraes morfol gicas associadas.  

E-print Network

??Fmeas de camundongos Swiss irradiadas apresentaram comportamento canibalstico inesperado durante um experimento para avaliao de teste de memria operacional e de referncia, no mencionado em (more)

Lcia de Arajo Pima

2007-01-01

238

Fraudes corporativas : uma anlise das variveis contbeis indicativas em empresas no financeiras de capital aberto no Brasil.  

E-print Network

??Trabalhos cientficos com ferramental estatstico em contabilidade, utilizando variveis contbeis indicativas, deram seus primeiros passos no estudo das fraudes corporativas no exterior no incio da (more)

Renato Ros

2011-01-01

239

Estratgia de escalonamento de controladores PID baseado em regras Fuzzy para redes industriais foundation fieldbus usando blocos padres.  

E-print Network

??Com o objetivo de se manter a padronizao Foundation Fieldbus, neste trabalho so apresentados procedimentos para se implementar estratgias de controle inteligente, baseadas em escalonamento (more)

Fbio Soares de Lima

2004-01-01

240

Identificao fenotpica e molecular, perfil de suscetibilidade aos antifngicos e deteco de glucuronoxilomanana em isolados clnicos de Trichosporon.  

E-print Network

??Infeces invasivas por Trichosporon spp. ocorrem com maior frequncia em pacientes neutropnicos, principalmente portadores de doenas hematolgicas malignas, e esto associadas a elevados ndices de (more)

Dulce Sachiko Yamamoto de Figueiredo

2013-01-01

241

Infeco por helmintos gastrintestinais em ces (Canis familiaris, Linnaeus, 1758) errantes procedentes do municpio de Recife - PE.  

E-print Network

??Os helmintos gastrintestinais assumem importncia significativa na etiologia das gastrenterites em caninos, sendo as helmintoses de origem canina um problema mundial e de prevalncia elevada, (more)

Auxiliadora de Moraes Ostermann

2008-01-01

242

Over one-half billion years of head conservation? Expression of an ems class gene in Hydractinia symbiolongicarpus (Cnidaria: Hydrozoa)  

PubMed Central

We report the isolation of an empty spiracles class homeodomain-containing gene, Cn-ems, from the hydrozoan Hydractinia symbiolongicarpus, the first gene of this class characterized in a lower metazoan. Cn-ems was found to be expressed in the head of gastrozooids, specifically in endodermal epithelial cells of the taeniolae of the hypostome. Cn-ems is not expressed in gonozooids, which lack taeniolae. Experimental conversion of the posterior region of the planula larva into head structures up-regulates expression of the gene. These findings establish that the association of ems-class genes with head structures preceded the evolution of bilateral symmetry. PMID:9520424

Mokady, Ofer; Dick, Matthew H.; Lackschewitz, Dagmar; Schierwater, Bernd; Buss, Leo W.

1998-01-01

243

Elimination of error factors, affecting EM and seismic inversions  

NASA Astrophysics Data System (ADS)

EM or seismic data inversions are affected by many factors, which may conceal the responses from target objects. We address here the contributions from the following effects: 1) Pre-survey spectral sensitivity factor. Preliminary information about a target layer can be used for a pre-survey estimation of the required frequency domain and signal level. A universal approach allows making such estimations in real time, helping the survey crew to optimize an acquisition process. 2) Preliminary velocities' identification and their dispersions for all the seismic waves, arising in a stratified media became a fast working tool, based on the exact analytical solution. 3) Vertical gradients effect. For most layers the log data scatter, requiring an averaging pattern. A linear gradient within each representative layer is a reasonable compromise between required inversion accuracy and forward modeling complexity. 4) An effect from the seismic source's radial component becomes comparable with vertical part for explosive sources. If this effect is not taken into account, a serious modeling error takes place. This problem has an algorithmic solution. 5) Seismic modeling is often based on different representations for a source formulated either for a force or to a potential. The wave amplitudes depend on the formulation, making an inversion result sensitive to it. 6) Asymmetrical seismic waves (modified Rayleigh) in symmetrical geometry around liquid fracture come from S-wave and merge with the modified Krauklis wave at high frequencies. A detail analysis of this feature allows a spectral range optimization for the proper wave's extraction. 7) An ultrasonic experiment was conducted to show different waves appearance for a super-thin water-saturated fracture between two Plexiglas plates, being confirmed by comparison with theoretical computations. 8) A 'sandwich effect' was detected by comparison with averaged layer's effect. This opens an opportunity of the shale gas direct identification from the surface measurements.

Magomedov, M.; Zuev, M. A.; Korneev, V. A.; Goloshubin, G.; Zuev, J.; Brovman, Y.

2013-12-01

244

Pre-flight risk assessment in Emergency Medical Service (EMS) helicopters  

NASA Technical Reports Server (NTRS)

The Emergency Medical Service (EMS) industry has been the subject of several television and newspaper articles (Harvey and Jensen, 1987) which emphasized the negative aspects, (e.g., fatalities and high accident rates), rather than the life saving services performed. Until recently, the accident rate of the EMS industry has been five times as high as that of other civil helicopters. This high accident rate has been coupled with the dramatic rise in the number of programs. The industry has built from a single service at its inception in 1972, to over 180 in 1987 (Spray, 1987), to the point that 93 percent of the contiguous U.S. is now covered by some type of EMS service. These factors prompted the National Transportation Safety Board (NTSB) to study the accidents that occurred between May 11, 1978 and December 3, 1986 (NTSB, 1988). The NTSB report concluded that 'Sound pilot judgment is central to safe flight operations.' They further stated that '... factors unique to EMS helicopter operations--such as the influence of the mission itself, program competition, and EMS program management perspectives--can drastically influence pilot judgment during the EMS mission.' One of the most difficult decisions that a pilot must make is whether to accept or decline a mission. A pre-flight risk assessment system (SAFE) was developed at NASA-Ames Research Center for civil EMS operations to aid pilots in making this decision objectively. The ability of the SAFE system to predict mission risk profiles was tested at an EMS facility. The results of this field study demonstrated that the usefulness of SAFE was highly dependent on the type of mission flown. SAFE is now being modified so that it can 'learn' with each mission flown. For example, after flying a mission to a particular site, an EMS pilot would input information about this mission into the system, such as new buildings, wires, or approach procedures. Then, the next time a pilot flew a similar mission or one to the same area, this additional information would be taken into account in computing a risk assessment.

Shively, R. J.

1992-01-01

245

PWR loss-of-coolant accident analysis capability of the WRAP-EM system  

SciTech Connect

The modular computational system known as the Water Reactor Analysis Package (WRAP) has been extended to provide the computational tools required to perform a complete analysis of loss-of-coolant accidents (LOCAs) in pressurized water reactors (PWR). The new system is known as the WRAP-EM (Evaluation Model) system and will be used by NRC to interpret and evaluate reactor vendor EM methods and computed results. The system for PWR-EM analysis is comprised of several computer codes which have been developed to analyze a particular phase of a LOCA. These codes include GAPCON for calculation of initial fuel conditions, WRAP (the previously developd SRL analog of RELAP4/MOD5) for analysis of the system blowdown and refill, the FLOOD option in WRAP for analysis of the reflood phase, and FRAP for the calculation of the behavior of the hot fuel pin. In addition, a PWR steady-state initialization procedure has been developed to provide the initial operating state of the reactor system. The PWR-EM system is operational and is being evaluated to determine the adequacy and consistency of the physical models employed for EM analysis.

Gregory, M.V.; Beranek, F.

1980-08-01

246

In vivo genotoxicity of EMS: statistical assessment of the dose response curves.  

PubMed

EMS induced micronuclei and lacZ mutations in in vivo studies in mice with a clearly sublinear dose dependency. As reported elsewhere in this issue, NOEL dose values of between 25 mg/kg/day and 80 mg/kg/day were observed for the different endpoints and tissues analysed. Here we show that statistical assessment of the data provides solid support that the induction of mutagenic and clastogenic effects after in vivo treatment with the directly DNA damaging mutagen EMS adheres to a thresholded dose response relation. These data corroborate similar evidence obtained in in vitro studies. We conclude that cells are fully capable of repairing large amounts of DNA ethylations induced by EMS without experiencing elevated mutation frequencies. The stochastic, linear risk assessment model generally employed for DNA damaging genotoxins can therefore be refuted for EMS. While presently this conclusion cannot be generalized to other genotoxins a change of paradigm appears to be indicated at least for alkylating agents inducing a comparable type and spectrum of DNA lesions as EMS. PMID:19857797

Gocke, Elmar; Wall, Michael

2009-11-12

247

Scalable and interactive segmentation and visualization of neural processes in EM datasets.  

PubMed

Recent advances in scanning technology provide high resolution EM (Electron Microscopy) datasets that allow neuro-scientists to reconstruct complex neural connections in a nervous system. However, due to the enormous size and complexity of the resulting data, segmentation and visualization of neural processes in EM data is usually a difficult and very time-consuming task. In this paper, we present NeuroTrace, a novel EM volume segmentation and visualization system that consists of two parts: a semi-automatic multiphase level set segmentation with 3D tracking for reconstruction of neural processes, and a specialized volume rendering approach for visualization of EM volumes. It employs view-dependent on-demand filtering and evaluation of a local histogram edge metric, as well as on-the-fly interpolation and ray-casting of implicit surfaces for segmented neural structures. Both methods are implemented on the GPU for interactive performance. NeuroTrace is designed to be scalable to large datasets and data-parallel hardware architectures. A comparison of NeuroTrace with a commonly used manual EM segmentation tool shows that our interactive workflow is faster and easier to use for the reconstruction of complex neural processes. PMID:19834227

Jeong, Won-Ki; Beyer, Johanna; Hadwiger, Markus; Vazquez, Amelio; Pfister, Hanspeter; Whitaker, Ross T

2009-01-01

248

Evaluation model calculations with the water reactor analysis package (WRAP-EM)  

SciTech Connect

The Water Reactor Analysis Package-Evaluation Model (WRAP-EM) is a modular system of computer codes designed to provide the safety analyst with the capability of performing complete loss-of-coolant calculations for both pressurized- and boiling-water reactor systems. The system provides a licensing-type calculation capability and thus contains most of the Nuclear Regulatory Commission-Approved EM options, as described in the Code of Federal Regulations, Title 10, Part 50, Appendix K. All phases of an accident (blowdown, refill, and reflood) are modeled. The WRAP consists of modified versions of five preexisting codes (RELAP4/MOD5, GAPCON, FRAP, MOXY, and NORCOOL), the necessary interfaces to permit automatic transition from one code to the next during the transient calculations, plus a host of user-convenience features to aid the analyst faced with a multitude of EM calculations. The WRAP has been verified against both calculated and experimental results.

Gregory, M.V.; Beranek, F.

1982-01-01

249

EM algorithm applied for estimating non-stationary region boundaries using electrical impedance tomography  

NASA Astrophysics Data System (ADS)

EIT has been used for the dynamic estimation of organ boundaries. One specific application in this context is the estimation of lung boundaries during pulmonary circulation. This would help track the size and shape of lungs of the patients suffering from diseases like pulmonary edema and acute respiratory failure (ARF). The dynamic boundary estimation of the lungs can also be utilized to set and control the air volume and pressure delivered to the patients during artificial ventilation. In this paper, the expectation-maximization (EM) algorithm is used as an inverse algorithm to estimate the non-stationary lung boundary. The uncertainties caused in Kalman-type filters due to inaccurate selection of model parameters are overcome using EM algorithm. Numerical experiments using chest shaped geometry are carried out with proposed method and the performance is compared with extended Kalman filter (EKF). Results show superior performance of EM in estimation of the lung boundary.

Khambampati, A. K.; Rashid, A.; Kim, B. S.; Liu, Dong; Kim, S.; Kim, K. Y.

2010-04-01

250

IPEP: Laboratory performance evaluation reports for management of DOE EM programs  

SciTech Connect

Environmental restoration program/project managers at DOE`s Office of Environmental Management (EM) are making important decisions based on analytical data generated by contracted laboratories. The Analytical Services Division, EM-263, is developing the Integrated Performance Evaluation Program (IPEP) to assess the performance of those laboratories, based on results from Performance Evaluation (PE) programs. The IPEP reports will be used by the laboratories to foster self-assessment and improvement. In addition, IPEP will produce PE reports for three levels of EM management (Operations/Project Offices, Area Program Offices, and Deputy Assistant Secretary Office). These reports will be used to assess whether contracted analytical laboratories have the capability to produce environmental data of the quality necessary for making environmental restoration and waste management decisions.

Hensley, J.E.; Lindahl, P.C.; Streets, W.E. [and others

1995-08-01

251

Preliminary Seafloor Controlled Source EM Results From APPLE  

NASA Astrophysics Data System (ADS)

Certain events in the life cycle of oceanic lithosphere are dominantly two-dimensional. These include formation of crust at axial spreading centers and deformation at the lithosphere - asthenosphere boundary. These processes may result in an electrically anisotropic oceanic lithosphere by creating conductive pathways in preferred orientations. Controlled Source Electromagnetic (CSEM) soundings and Magnetotelluric (MT) soundings were made during the Anisotropy and Physics of the Pacific Lithosphere Experiment (APPLE), carried out in February/March 2001 approximately 600 km west of San Diego, California. Twenty seafloor electromagnetic field sensors were deployed: 4 long-wire CSEM recorders with 200 m electrode offsets, 6 high-frequency MT/CSEM recorders with two orthogonal 10 m offset electrodes and two orthogonal induction coil magnetometers, and 10 low-frequency MT recorders with a three-component fluxgate magnetometer and two orthogonal 10 m electric dipoles, 5 of which also recorded CSEM data. Every instrument was recovered, with data, during this primary cruise and a follow-up recovery cruise for the long-period instruments in August 2001. The deep-towed EM transmitter (DASI) was a 100 m horizontal electric dipole, which was towed in a 30 km radius circle around a central core of recorders. A radial tow was also performed. DASI transmitted a 4 Hz square wave throughout the CSEM phase of the experiment. Initial processing of the CSEM data reveals evidence of crustal anisotropy. In particular, transmitted electromagnetic energy is attenuated more strongly when propagating from west to east than from north to south. The difference in attenuation is about a factor of two, at a range of 30 km and a frequency of 4Hz. This confirms earlier results from the PEGASUS experiment, which proposed that oceanic lower crust and upper mantle with east-west trending lineaments of increased conductivity will exhibit greater attenuation of electric fields in the east-west direction. These lineaments may be deposits of conductive minerals (e.g. oxides, graphite) stretched out along the direction of plate motion.

Behrens, J. P.; MacGregor, L.; Constable, S.; Everett, M.

2001-12-01

252

Facilitating EMS turnaround intervals at hospitals in the face of receiving facility overcrowding.  

PubMed

The escalating national problem of oversaturated hospital beds and emergency departments (EDs) has resulted in serious operational impediments within patient-receiving facilities. It has also had a growing impact on the 9-1-1 emergency care system. Beyond the long-standing difficulties arising from ambulance diversion practices, many emergency medical services (EMS) crews are now finding themselves detained in EDs for protracted periods, unable to transfer care of their transported patients to ED staff members. Key factors have included a lack of beds or stretcher space, and, in some cases, EMS personnel are used transiently for ED patient care services. In other circumstances, ED staff members no longer prioritize rapid turnaround of EMS-transported patients because of the increasing volume and acuity of patients already in their care. The resulting detention of EMS crews confounds concurrent ambulance availability problems, creates concrete risks for delayed EMS responses to impending critical cases, and incurs regulatory jeopardy for hospitals. Communities should take appropriate steps to ensure that delivery intervals (time elapsing from entry into the hospital to physical transfer of patient care to ED staff) remain extremely brief (less than a few minutes) and that they rarely exceed 10 minutes. While recognizing that the root causes of these issues will require far-reaching national health care policy changes, EMS and local government officials should still maintain ongoing dialogues with hospital chief administrators to mitigate this mutual crisis of escalating service demands. Federal and state health officials should also play an active role in monitoring progress and compliance. PMID:16147474

Eckstein, Marc; Isaacs, S Marshal; Slovis, Corey M; Kaufman, Bradley J; Loflin, James R; O'Connor, Robert E; Pepe, Paul E

2005-01-01

253

Influence of motivations for seeking ISO 14001 certification on perceptions of EMS effectiveness in China.  

PubMed

This study examines the motivations of mainland Chinese facilities in seeking ISO 14001 certification and examines the linkages between these motivations and self-reports of the effectiveness of major environmental management system (EMS) components. In a sample of 128 facilities in Beijing, Shanghai, and Guangzhou, the main drivers for certification were reported to be to ensure regulatory compliance, to enhance the firm's reputation, and to improve environmental performance, in that order. Although motivation to achieve cost reductions were least emphasized, a broad range of motivations appears to be considered in the decision to seek certification to ISO 14001. Regression models linking these motivations to the EMS components suggests that internal motivations have an influence on most EMS components. One interesting exception to this, however, is that no significant relationship was observed between internal motivations and the promulgation of environmental objectives and targets. The relationships associated with external motivations for certification (i.e., those in response to customer and other stakeholder pressures) and EMS components, on the other hand, are weaker and tend to occur earlier in the process cycle. No significant relationships were found between motivations to reduce costs and perceptions of the effectiveness of EMS components. Overall, these findings suggest that ISO 14001, as currently being implemented in mainland China, may have a modestly useful role when used in combination with other policy mechanisms to move the Chinese economy toward more sustainable practices. It is asserted that the ISO standard could provide even greater benefits if Chinese registrars were more proactive in developing EMS in conjunction with even more rigorous third-party audits. PMID:15285401

Fryxell, Gerald E; Lo, Carlos Wing-Hung; Chung, Shan Shan

2004-02-01

254

Maximum Likelihood from Incomplete Data via the EM Algorithm A. P. Dempster; N. M. Laird; D. B. Rubin  

E-print Network

. DEMPSTER,N. M. LAIRDand D. B. RDIN Harvard University and Educational Testing Service [Read before of an expectation step followed by a maximization step we call it the EM algorithm. The EM process is remarkable an exponential family whose maximum-likelihood estimates are easily computed, then each maximization step

Cheng, Jianlin Jack

255

Factor Analysis with EM Algorithm Never Gives Improper Solutions when Sample Covariance and Initial Parameter Matrices Are Proper  

ERIC Educational Resources Information Center

Rubin and Thayer ("Psychometrika," 47:69-76, 1982) proposed the EM algorithm for exploratory and confirmatory maximum likelihood factor analysis. In this paper, we prove the following fact: the EM algorithm always gives a proper solution with positive unique variances and factor correlations with absolute values that do not exceed one, when the

Adachi, Kohei

2013-01-01

256

Left-Handed-Media Simulation and Transmission of EM Waves in Subwavelength Split-Ring-Resonator-Loaded Metallic Waveguides  

Microsoft Academic Search

At microwave frequencies, hollow metallic waveguides behave in certain aspects as a ``one-dimensional plasma.'' This feature will be advantageously used for simulating the propagation of electromagnetic (EM) waves in left-handed metamaterials provided the hollow waveguide is periodically loaded with split ring resonators. It will be shown that EM transmission in this structure is feasible within a certain frequency band even

R. Marqus; J. Martel; F. Mesa; F. Medina

2002-01-01

257

Hamartoma fibrolipomatoso e macrodistrofia lipomatosa: anlise dos achados clnicos e de imagem em quatro casos, com reviso da literatura  

Microsoft Academic Search

O hamartoma fibrolipomatoso neural e a macrodistrofia lipomatosa so doenas raras, com achados de imagem caractersticos. Radiografias simples, estudos de ressonncia magntica e pronturios mdicos de quatro pacientes foram revisados. Em um paciente, foi realizada cirurgia com confirmao histopatolgica. Em trs pacientes, os achados clnicos e de imagem foram considerados suficientes para o diagnstico. Descreve- mos dois casos de macrodistrofia

Rafael Darahem de Souza Coelho; Marcelo Novelino Simo; Clvis Simo Trad

2002-01-01

258

Rotating-bed reactor as a power source for EM gun applications  

SciTech Connect

Electromagnetic gun applications of the Rotating Bed Reactor (RBR) are examined. The RBR is a compact (approx. 1 m/sup 3/), (up to several thousand MW(th)), high-power reactor concept, capable of producing a high-temperature (up to approx. 300/sup 0/K) gas stream with a MHD generator coupled to it, the RBR can generate electric power (up to approx. 1000 MW(e)) in the pulsed or cw modes. Three EM gun applications are investigated: a rail gun thruster for orbit transfer, a rapid-fire EM gun for point defense, and a direct ground-to-space launch. The RBR appears suitable for all applications.

Powell, J.; Botts, T.; Stickley, C.M.; Meth, S.

1980-01-01

259

Over-commitment of EMS Personnel in North Carolina with Implications for Disaster Planning.  

PubMed

Abstract Background. While large-scale disasters are uncommon, our society relies on emergency personnel to be available to respond and act. Faith in their availability may lead to a false sense of security. Many emergency personnel obligate themselves to more than one agency and so may be overcommitted, leaving agencies with unfilled positions in a disaster. We sought to describe the frequency of overcommitment of emergency medical services (EMS) personnel in North Carolina. Methods. We conducted a cross-sectional study utilizing the Credentialing Information System (CIS) of the North Carolina Office of EMS. The CIS database manages demographic and certification information for all EMS personnel in North Carolina. The state is divided into 100 EMS systems based on county boundaries. Utilizing de-identified provider data from the CIS, we collected system(s) affiliation(s) and level of certification. To calculate an overcommitment rate per system, we divided the number of personnel with more than one system affiliation by total number of system roster personnel. To compare urbanicity and certification level with overcommitment, analysis of variance and the chi-square test were used, respectively. Results. North Carolina credentials 14,717 EMS providers (8,346 EMT, 1,709 EMT-intermediate (EMT-I), 4,662 EMT-paramedic (EMT-P)). Of these, 10,928 (74%) are affiliated with a single system. Of the 3,789 committed to more than one system, 3,020 (21%) were committed to two systems, 571 (4%) to three, 138 (1%) to four, and 60 (<1%) to five or more. EMT-Is and EMT-Ps were more likely to be overcommitted when compared to EMTs (37, 32, 20% respectively, p < 0.0001). Statewide, the median overcommitment rate for EMS systems was 24% (IQR 16-37%). Personnel working in systems servicing less densely populated areas were more likely to be overcommitted: 33% wilderness, 29% rural, 20% suburban and 11% urban (p < 0.0001). Additionally, 40% wilderness, 23% rural, 4% suburban, and 0% urban systems had >37% of their personnel engaged in 9-1-1 response in more than one system. Conclusion. Many EMS personnel have multiple EMS commitments. Disaster planners and emergency managers should consider overcommitment of emergency responders when calculating the work force on which they can rely. PMID:25289878

Watkins, Cameron; Shofer, Frances S; Delbridge, Theodore R; Mears, Greg D; Robertson, Jeff; Brice, Jane H

2014-10-01

260

The longitudinal study of turnover and the cost of turnover in EMS  

PubMed Central

Purpose Few studies have examined employee turnover and associated costs in emergency medical services (EMS). The purpose of this study was to quantify the mean annual rate of turnover, total median cost of turnover, and median cost per termination in a diverse sample of EMS agencies. Methods A convenience sample of 40 EMS agencies was followed over a 6 month period. Internet, telephone, and on-site data collection methods were used to document terminations, new hires, open positions, and costs associated with turnover. The cost associated with turnover was calculated based on a modified version of the Nursing Turnover Cost Calculation Methodology (NTCCM). The NTCCM identified direct and indirect costs through a series of questions that agency administrators answered monthly during the study period. A previously tested measure of turnover to calculate the mean annual rate of turnover was used. All calculations were weighted by the size of the EMS agency roster. The mean annual rate of turnover, total median cost of turnover, and median cost per termination were determined for 3 categories of agency staff mix: all paid staff, mix of paid and volunteer (mixed), and all-volunteer. Results The overall weighted mean annual rate of turnover was 10.7%. This rate varied slightly across agency staffing mix: (all-paid=10.2%, mixed=12.3%, all-volunteer=12.4%). Among agencies that experienced turnover (n=25), the weighted median cost of turnover was $71,613.75, which varied across agency staffing mix: (all-paid=$86,452.05, mixed=$9,766.65, and all-volunteer=$0). The weighted median cost per termination was $6,871.51 and varied across agency staffing mix: (all-paid=$7,161.38, mixed=$1,409.64, and all-volunteer=$0). Conclusions Annual rates of turnover and costs associated with turnover vary widely across types of EMS agencies. The studys mean annual rate of turnover was lower than expected based on information appearing in the news media and EMS trade magazines. Findings provide estimates of two key workforce measures turnover rates and costs where previously none have existed. Local EMS directors and policymakers at all levels of government may find the results and study methodology useful towards designing and evaluating programs targeting the EMS workforce. PMID:20199235

Patterson, P. Daniel; Jones, Cheryl B.; Hubble, Michael W.; Carr, Matthew; Weaver, Matthew D.; Engberg, John; Castle, Nicholas

2010-01-01

261

Comparison of 3D OS-EM and 4D MAP-RBI-EM reconstruction algorithms for cardiac motion abnormality classification using a motion observer.  

PubMed

Using a heart motion observer, we compared the performance of two image reconstruction techniques, a 3D OS-EM algorithm with post Butterworth spatial filtering and a 4D MAP-RBI-EM algorithm. The task was to classify gated myocardial perfusion (GMP) SPECT images of beating hearts with or without regional motion abnormalities. Noise-free simulated GMP SPECT projection data was generated from two 4D NCAT beating heart phantom models, one with normal motion and the other with a 50% motion defect in a pie-shaped wedge region-of-interest (ROI) in the anterior-lateral left ventricular wall. The projection data were scaled to clinical GMP SPECT count level before Poisson noise was simulated to generate 40 noise realizations. The noise-free and noisy projection data were reconstructed using the two reconstruction algorithms, parameters chosen to optimize the tradeoff between image bias and noise. As a motion observer, a 3D motion estimation method previously developed was applied to estimate the radial motion on the ROI from two adjacent gates. The receiver operating characteristic (ROC) curves were computed for radial motion magnitudes corresponding to each reconstruction technique. The area under the ROC curve (AUC) was calculated as an index for classification of regional motion. The reconstructed images with better bias and noise tradeoff were found to offer better classification for hearts with or without regional motion defects. The 3D cardiac motion estimation algorithm, serving as a heart motion observer, was better able to distinguish the abnormal from the normal regional motion in GMP SPECT images obtained from the 4D MAP-RBI-EM algorithm than from the 3D OS-EM algorithm with post Butterworth spatial filtering. PMID:21516240

Tang, Jing; Lee, Taek-Soo; He, Xin; Segars, W Paul; Tsui, Benjamin M W

2010-08-26

262

In Situ Data Processing With Workflow-based Embedded Cyberinfrastructure (emCI)  

NASA Astrophysics Data System (ADS)

The decreasing cost of sensors and sensor networks has led to the wide scale adoption of this technology by large numbers of scientists for the collection of data in the field. At the same time, advances in both hardware and software have resulted in increased processing power at the sensor, enabling sensors in the field to do more than just data collection. With an increase in the number of sensors and deployments, scientists need tools for the configuration, operation, and debugging problems on their sensor networks. Furthermore, as the amount of data increases, scientists need a way to quickly and easily tag, process, archive, and share their datasets. Without proper tools, it is common for data processing to happen weeks or sometimes months after it is collected. This leads to important events being missed and makes real-time data analysis impossible. Additionally, because data is often manually processed through a series of repetitive steps, the analysis is susceptible to errors that are hard to track after data is combined and shared among researchers. Our emCI (embedded cyberinfrastructure) toolkit enables researchers to easily collect, analyze, and share their data. emCI provides a web-portal with upload/download capabilities that accept data in a number of different formats and ultimately can be used to archive data and share datasets among scientists. emCI uses an embedded general-purpose computer in the field for interfacing with sensors, coordinating data collection, and providing reliable data transfer to the emCI web portal. emCI relies on workflow technologies to automate data processing pipelines and to provide provenance information. In particular, emCI uses the Pegasus Workflow Management System as a core component, adapting it to the embedded computation environment. emCI allows scientists to distribute tasks among sensors in field and servers in the lab. In-situ processing using embedded workflows enable data reduction and validation in the field. Scientists can also create embedded workflows for data analysis and sensor retasking, allowing for much faster response to events in the field as well as disconnected operation from the emCI portal. Workflows executed at the emCI portal can include heavier computations, and combine data from multiple sensors by performing data analysis on data from multiple sources. The emCI portal also supports workflows for data transfers, visualization, and the automatic monitoring of the embedded infrastructure. We have prototyped the emCI toolkit in a project that uses automated digital cameras and weather stations for observing climate change based on plant phenology observations. In this application, embedded workflows are being used to coordinate the field data collection, reduce and analyze image data in the field, and retask cameras based on embedded triggers. We are currently in the process of moving our deployment from prototype to production stage at the Stunt Ranch UC Reserve in the Santa Monica Mountains.

Mehta, G.; Silva, F.; Graham, E. A.; Vahi, K.; Deelman, E.; Rundel, P.

2011-12-01

263

Dynamic behaviour conception for EmI companion robot. Sbastien Saint-Aim, Cline Jost, Brigitte Le-Pvdic, Dominique Duhaut  

E-print Network

Dynamic behaviour conception for EmI companion robot. Sébastien Saint-Aimé, Céline Jost, Brigitte of satisfaction (86%) of the evaluation allowed us embeded static mode on our robotics platform: EmI ­ Emotional Model of Interaction. Now, we want add dynamics on EmI robot and add lifelike in its reactions

Paris-Sud XI, Université de

264

Scattering of Arbitrarily-Polarized EM Waves by a Discontinuity in a Grounded Dielectric Sheet and Propagation of EM Pulses Excited by AN Electric Dipole in Conducting Media.  

NASA Astrophysics Data System (ADS)

There are two parts in this thesis. In Part I, the two-dimensional problem of the interaction between an arbitrarily-polarized electromagnetic (EM) wave and a dielectric discontinuity in a grounded dielectric sheet is analyzed. An electric field integral equation (EFIE) is derived based on the dyadic Green's function for the field produced by induced polarization currents in the discontinuity region. Impressed electric fields consist of either plane waves incident from space above the dielectric sheet or surface waves supported by that sheet; both TE and TM polarizations are considered. The EFIE is solved using Galerkin's method with pulse and sinusoidal/piecewise -sinusoidal (SPS) basis functions. Computation of the inverse Fourier transform representation of the Green's function is performed by integration along the real axis, along the branch cuts directly, and along the branch cuts with a variable change. It is found that the excitation of the surface-wave mode reduces the back scattered radiation field for TE-polarized plane wave incidence. The reflected power for both TE- and TM-polarized surface-wave incidence is calculated, and it is found that the numerical results agree very well with those of existing studies. The EFIE is also solved iteratively using successive approximations. These approximate results agree very well with the direct MoM (Method of Moments) solutions to the EFIE. In Part II, the exact solutions are given for the transient EM fields excited by an electric dipole antenna with an impulsive current in a conducting medium. There exists an optimum waveform for the antenna current which can generate an EM pulse with a maximum intensity at a particular distance from the antenna. It is found that the EM fields of an EM pulse excited by an antenna in a conducting medium can be divided into two parts. The first part is an impulse wave which propagates with the speed of light (1/sqrt{muvarepsilon }) and decays exponentially. The second part builds up gradually and propagates slowly, and more importantly this part attenuates as an inverse power of distance which is a much slower rate than an exponential decay.

Song, Jiming

265

Sintomas Depressivos e Qualidade de Vida em Indivduos com Epilepsia por Esclerose Mesial Temporal  

Microsoft Academic Search

RESUMO Introduo: Dificuldades no trabalho, em relacionamentos interpessoais, familiares e sociais, a percepo do estigma, da discriminao dentre outros tm sido associados aos estados depressivos interictais, influen- ciando negativamente a qualidade de vida (QV) das pessoas com epilepsia. A depresso tem alta prevalncia (20 a 55%) nas epilepsias, sendo vista como o fator mais importante no julgamento do paciente sobre

Neide Barreira Alonso; Tatiana Indelicato da Silva; Ana Carolina Westphal; Auro Mauro Azevedo

266

Extrac~ao de Propriedades Sociais em Redes Veiculares Felipe Cunha13  

E-print Network

Extrac¸~ao de Propriedades Sociais em Redes Veiculares Felipe Cunha13 , Aline Viana3 , Thiago atestar que as Redes Veiculares apresentam comportamento social. Os re- sultados comprovam a exist^encia de rotinas e propriedades sociais nas Redes Veiculares. Finalizando, discute-se sobre novas

Paris-Sud XI, Université de

267

Governo apresenta reforma da rede do Superior em Maro sem contributo dos reitores  

E-print Network

Governo apresenta reforma da rede do Superior em Março sem contributo dos reitores O Ministério da a racionalização da rede do Superior que vai passar pela cria- ção de consórcios entre universida- des e

Instituto de Sistemas e Robotica

268

Environmental Cost Analysis System (ECAS) Status and Compliance Requirements for EM Consolidated Business Center Contracts - 13204  

SciTech Connect

The Department of Energy (DOE) Office of Environmental Management (EM) has developed a web-accessible database to collect actual cost data from completed EM projects to support cost estimating and analysis. This Environmental Cost Analysis System (ECAS) database was initially deployed in early 2009 containing the cost and parametric data from 77 decommissioning, restoration, and waste management projects completed under the Rocky Flats Closure Project. In subsequent years we have added many more projects to ECAS and now have a total of 280 projects from 8 major DOE sites. This data is now accessible to DOE users through a web-based reporting tool that allows users to tailor report outputs to meet their specific needs. We are using it as a principal resource supporting the EM Consolidated Business Center (EMCBC) and the EM Applied Cost Engineering (ACE) team cost estimating and analysis efforts across the country. The database has received Government Accountability Office review as supporting its recommended improvements in DOE's cost estimating process, as well as review from the DOE Office of Acquisition and Project Management (APM). Moving forward, the EMCBC has developed a Special Contract Requirement clause or 'H-Clause' to be included in all current and future EMCBC procurements identifying the process that contractors will follow to provide DOE their historical project data in a format compatible with ECAS. Changes to DOE O 413.3B implementation are also in progress to capture historical costs as part of the Critical Decision project closeout process. (authors)

Sanford, P.C. [Consultant, 11221 E. Cimmarron Dr., Englewood, CO 80111 (United States)] [Consultant, 11221 E. Cimmarron Dr., Englewood, CO 80111 (United States); Moe, M.A. [EMCBC Office of Cost Estimating and Analysis, United States Department of Energy, 250 E. 5th Street, Suite 500, Cincinnati, OH 45202 (United States)] [EMCBC Office of Cost Estimating and Analysis, United States Department of Energy, 250 E. 5th Street, Suite 500, Cincinnati, OH 45202 (United States); Hombach, W.G. [Team Analysis, Inc., 2 Cardinal Park Drive, Suite 105A, Leesburg, VA 20175 (United States)] [Team Analysis, Inc., 2 Cardinal Park Drive, Suite 105A, Leesburg, VA 20175 (United States); Urdangaray, R. [Project Performance Corporation, 1760 Old Meadow Road, McLean, VA 22102 (United States)] [Project Performance Corporation, 1760 Old Meadow Road, McLean, VA 22102 (United States)

2013-07-01

269

Accelerated Iterative Reconstruction for Positron Emission Tomography Based on the EM Algorithm for Maximum Likelihood Estimation  

Microsoft Academic Search

The EM method that was originally developed for maximum likelihood estimation in the context of mathematical statistics may be applied to a stochastic model of positron emission tomography (PET). The result is an iterative algorithm for image reconstruction that is finding increasing use in PET, due to its attractive theoretical and practical properties. Its major disadvantage is the large amount

Robert M. Lewitt; Gerd Muehllehner

1986-01-01

270

Monte Carlo EM for Generalized Linear Mixed Models using Randomized Spherical Radial  

E-print Network

Monte Carlo EM for Generalized Linear Mixed Models using Randomized Spherical Radial Integration by Monte Carlo methods. However, in practice, the Monte Carlo sample sizes required for convergence for such methods. One solution is to use Monte Carlo approximation, as proposed by Wei and Tanner (1990

Booth, James

271

Memria fonolgica em crianas bilngues bimodais e crianas com implante coclear  

PubMed Central

RESUMO Este estudo comparou o desempenho de crianas bilngues bimodais ouvintes (filhas de pais surdos) e crianas surdas usurias de implante coclear (filhas de pais surdos e de pais ouvintes), com diferentes contextos de acesso Lngua Brasileira de Sinais (Libras), em tarefas que envolvem memria fonologica. Os testes utilizados foram: Teste de Pseudopalavras (Santos e Bueno, 2003) e Teste de Pseudosinais (desenvolvido pelos pesquisadores responsveis pelo Projeto Desenvolvimento Bilngue Bimoda). Alm disso, foram includos dois grupos de controle, formados por crianas surdas (usuarias de Libras), e adultos bilngues bimodais ouvintes. Na anlise dos resultados, em relao ao desempenho entre os dois grupos testados foi constatado que o grupo de crianas bilngues bimodais ouvintes apresentou desempenho superior, nos dois testes. No entanto, ao ser analisado o desempenho da criana surda usuaria de implante coclear, filha de pais surdos, que possui acesso irrestrito Libras e comparado com o das crianas surdas usurias de implante coclear, que possuem acesso restrito Libras, foi constatado que o seu desempenho foi semelhante ao do grupo de crianas bilngues bimodais ouvintes. As crianas surdas usurias de implante coclear com acesso restrito Libras e, portanto, com acesso maior ao Portugus apresentaram escores mais baixos nas tarefas, principalmente do teste em Portugus. Os resultados sugerem que as crianas surdas usurias de implante coclear em processo de aquisio da lnguagem podem se beneficiar com o acesso irrestrito Libras, atingindo inclusive desempenho semelhante a de crianas bilngues bimodais ouvintes. PMID:25110473

de Quadros, Ronice Mller; Cruz, Carina Rebello; Pizzio, Aline Lemos

2014-01-01

272

Conhecimento e Dinamismo Psquico em Dois Sermes no Brasil Colonial1  

Microsoft Academic Search

RESUMO - O trabalho aborda as relaes entre conhecimento e dinamismo psquico em dois sermes pregados no Brasil por Eusebio de Mattos, no sculo XVII e por Bento da Trindade, no sculo XVIII. Uma concepo de conhecimento afetivo implicando as atividades das potncias anmicas defi ne o xtase dos msticos como ato do entendimento aplicado ao objeto supremo, Deus. Esta

Marina Massimi

273

An EM Algorithm for Fitting Two-Level Structural Equation Models  

ERIC Educational Resources Information Center

Maximum likelihood is an important approach to analysis of two-level structural equation models. Different algorithms for this purpose have been available in the literature. In this paper, we present a new formulation of two-level structural equation models and develop an EM algorithm for fitting this formulation. This new formulation covers a

Liang, Jiajuan; Bentler, Peter M.

2004-01-01

274

Lessons in Generative Design, Publishing, and Circulation: What EM-Journal's First Year Has Taught Us  

ERIC Educational Resources Information Center

"EM-Journal" is a flexibly refereed online journal featuring writing produced by students of Eastern Michigan University. The journal showcases a variety of documents (articles, essays, reports, etc.) written and designed by students enrolled in EMU's First-Year Writing (FYW) program, in selected Writing Intensive (WI) courses affiliated with the

Rosinski, Jana; Lonsdale, Chelsea; Morrison, Becky; Mueller, Derek; Nannini, Adam

2013-01-01

275

Instituto Nacional de Pesquisas Espaciais Exame para o curso de ps-graduao em Astrofsica  

E-print Network

for Extraterrestrial Intelligence), afirmava que o grande radiotelescópio de Arecibo, em Porto Rico, "pode detectar um magnético? b) A que aceleração ele é submetido? #12;6. Frank Drake, um dos criadores do projeto SETI (Search

276

iGrace emotional computational model for EmI companion robot.  

E-print Network

0 iGrace ­ emotional computational model for EmI companion robot. S´ebastien Saint. Introduction A new challenge in Robotics is to create systems capable of behaviour enhancement due modality in human communication. Robotherapy, a field in robotics, attempts to apply the principles

Paris-Sud XI, Université de

277

ICE-EM RNSA 2007 Workshop on Pairing Based Cryptography 1 Certificateless Cryptography I  

E-print Network

ICE-EM RNSA 2007 Workshop on Pairing Based Cryptography 1 Certificateless Cryptography I Kenny on Pairing Based Cryptography 2 Overview This talk and the next: · Motivating and introducing certificateless (public key) cryptography · Certificateless Encryption (CLE) and its security · Specific and generic

Paterson, Kenny

278

A Carreira Universitria em Portugal Paulo J. Ferreira, Ph.D  

E-print Network

A Carreira Universitária em Portugal Paulo J. Ferreira, Ph.D University of Texas Austin, Texas, USA ferreira@mail.utexas.edu Poderá parecer incrível, mas de acordo com os actuais estatutos da carreira

Ferreira, Paulo J.

279

Introduc~ao ao LATEX 2 Ou LATEX2 em 105 minutos  

E-print Network

´a-lo atualizado para o LATEX2 por J¨org Knappen em CTAN:/tex-archive/info/lshort/german Enquanto preparava este! Rosemary Bailey, Friedemann Brauer, Jan Busa, Markus Br¨uhwiler, David Carlisle, Jos´e Carlos Santos, Mike

Reverbel, Francisco

280

New Jersey's EMS response to Superstorm Sandy: a case study of the emergency management assistance compact.  

PubMed

In the United States, understanding the Emergency Management Assistance Compact (EMAC) is critical to responding to a natural disaster or manmade event. Recently, the State of New Jersey responded to Superstorm Sandy and implemented the EMAC system by requesting ambulances to aid in the Emergency Medical Services response. New Jersey's response to Superstorm Sandy was unprecedented in that this storm affected the entire state and EMS community. New Jersey's EMS community and infrastructure were impacted greatly, despite years of planning and preparation for such an event. Once received, out-of-state EMS resources were integrated into New Jersey's emergency management and EMS systems. In this report, each phase of the EMAC in New Jersey is explored, from how the response was coordinated to how it ultimately was executed. The state coordinated its response on multiple levels and, as such, tested the practical applicability of the EMAC process and employed best practices and solutions to issues that arose. These best practices and solutions may prove invaluable for any state or territory that may activate the EMAC system for emergency medical service resources. PMID:24844291

Clancy, Terry; Christensen, Kenneth; Cortacans, Henry P

2014-06-01

281

UNIVERSIDADE DE BRASLIA PROGRAMA DE PS-GRADUAO EM PROCESSOS DE DESENVOLVIMENTO  

E-print Network

vagas oferecidas para candidatos residentes no Brasil é: 2.1.1 Mestrado Acadêmico: 25 (vinte e cinco inscrição, os candidatos residentes no Brasil deverão, obrigatoriamente, entregar, pessoalmente ou por 001/2011-PGPDS, nome completo do candidato e número do CPF, na Secretaria de Pós-Graduação em

Lucero, Jorge Carlos

282

The VLF-EM imaging of potential collapse on the LUSI embankment  

NASA Astrophysics Data System (ADS)

Collapse and overtopping repeatedly occur in LUSI Embankment. Discontinuities (crack or fracture) in the embankment are major reasons for embankment failures or collapses. Very-low frequency electromagnetic (VLF-EM) measurement is essentially a non-destructive technique which displays subsurface 2-D cross section of resistivity. The cross section result has the possibility of detecting discontinuities and liquid saturation in embankment before it collapsed by observing which part of it in the cross section has low resistivity. This paper presents results of a survey conducted at the LUSI embankment in Eastern Java, Indonesia in a part of potential collapse. VLF-EM profiles measured along the embankment crest provided an overview of the whole embankment and served to detect anomalous zones. The noise assisted multivariate empirical mode decomposition (NA-MEMD) is applied to reject unwanted VLF-EM noise and Inv2DVLF software is applied to obtain result of 2-D resistivity models. In the selected area, the drill log and the standard penetration test (SPT) value gave detailed information about subsurface layer below embankment. This information is valuable for supporting 2-D resistivity image obtained from VLF-EM data inversion. Furthermore, the low resistivity in embankment layer is associated to discontinuities (fracture, crack or fault) along the embankment which caused its collapse.

Sungkono; Husein, Alwi; Prasetyo, Hardi; Bahri, Ayi S.; Monteiro Santos, Fernando A.; Santosa, Bagus J.

2014-10-01

283

O METRO E A CIDADE. Das representaes da causalidade integrao transporte/ordenamento em Paris.  

E-print Network

1 O METRO E A CIDADE. Das representações da causalidade à integração transporte/ordenamento em Paris. _____________________ Palavras-chave : metro ­ causalidade ­ avaliação ­ efeitos ­ infra entre a expansão do metro parisiense nos arredores da capital francesa e o tecido urbano e social do

Paris-Sud XI, Université de

284

Original identification technique of passive EM sensors using loaded transmission delay lines  

Microsoft Academic Search

This paper presents a proof of concept of an original identification technique of passive EM sensor cells. Previous works published by the authors have shown the feasibility of high sensitivity passive sensor Microsystems based on the electromagnetic transduction principle. More, other works, published by the same authors, have demonstrated the feasibility of a wireless interrogation technique of such passive measurement

M. M. Jatlaoui; F. Chebila; S. Bouaziz; P. Pons; H. Aubert

2010-01-01

285

Assessing the credibility of a target zone: evidence from the EMS  

Microsoft Academic Search

This paper provides some new evidence on the credibility of the Exchange Rate Mechanism (ERM) of the European Monetary System (EMS). The study differs from previous research in the literature in three main respects. First, the main contribution is the use of several credibility indicators, some of which have never been applied before to all of the currencies under study.

Francisco Ledesma-Rodrguez; Manuel Navarro-Ibez; Jorge Prez-Rodrguez; Simn Sosvilla-Rivero

2005-01-01

286

Study of temperature distribution of a pyramidal EM-wave absorber under high power injection  

Microsoft Academic Search

Utilization of electromagnetic absorbers under high power is increasing. The absorbers are used in anechoic chambers for estimation of performance of high power radars. Variation of the absorption characteristics of the absorbers under such condition is expected, due to the generation of heat or temperature change. In this paper, first temperature distribution of a pyramidal EM-wave absorber under high power

Shinya Watanabe; Tetsuhiro Sasagawa; Osamu Hashimoto; Toshifumi Saito

2007-01-01

287

Prof. Dr. Ir. Joost-Pieter Katoen Prof. em. Dr. Klaus Indermark  

E-print Network

Staff · Faculty Prof. Dr. Ir. Joost-Pieter Katoen Prof. em. Dr. Klaus Indermark AOR Priv.-Doz. Dr Chakraborty (IIT Delhi, India) Taolue Chen (University of Oxford, UK) Andreas Classen (University of Namur, B success both scientifically as well as socially. #12;Other highlights during 2011: - Joost-Pieter Katoen

Ábrahám, Erika

288

Prof. Dr. Ir. Joost-Pieter Katoen Prof. em. Dr. Klaus Indermark  

E-print Network

Staff · Faculty Prof. Dr. Ir. Joost-Pieter Katoen Prof. em. Dr. Klaus Indermark apl. Prof. Dr Bundeswehr München, GER) B. Srivathsan (LaBRI, Bordeaux, FRA) Daniel Stan (ENS Cachan, FRA) Gerjan Stokkink of post-doctoral research. Dino Distefano was one of the first PhD stu- dents supervised by Joost

Ábrahám, Erika

289

9th EMS Annual Meeting & 9th European Conference on Applications of Meteorology (ECAM)  

E-print Network

9th EMS Annual Meeting & 9th European Conference on Applications of Meteorology (ECAM) 28 September Meteorological Society 9th Annual Meeting and the 9th European Conference on Applications of Meteorology at the UK Met Office. I am very grateful to the European Meteorological Society for enabling me to attend

Williams, Paul

290

An EM Algorithm for Maximum Likelihood Estimation of Process Factor Analysis Models  

ERIC Educational Resources Information Center

In this dissertation, an Expectation-Maximization (EM) algorithm is developed and implemented to obtain maximum likelihood estimates of the parameters and the associated standard error estimates characterizing temporal flows for the latent variable time series following stationary vector ARMA processes, as well as the parameters defining the

Lee, Taehun

2010-01-01

291

Regresso mltipla stepwise e hierrquica em Psicologia Organizacional: aplicaes, problemas e solues  

Microsoft Academic Search

Resumo Este artigo discute algumas aplicaes das tcnicas de anlise de regresso mltipla stepwise e hierr- quica, as quais so muito utilizadas em pesquisas da rea de Psicologia Organizacional. So discuti- das algumas estratgias de identificao e de soluo de problemas relativos ocorrncia de erros do Tipo I e II e aos fenmenos de supresso, complementaridade e redundncia nas

Gardnia Abbad; Cludio Vaz Torres

2002-01-01

292

Teamwork. University of Miami uses competition to sharpen EMS team performance.  

PubMed

Many argue that experience is the best teacher. However, it's often dangerous for the patient and impractical for an EMS system to assess prehospital providers in their actual working environment. Simulated scenario competition fosters clearer thinking and translates into more effective action and enhanced patient outcomes during true emergencies. PMID:11771373

Miller, G T; Gordon, D L; Issenberg, S B; LaCombe, D M; Brotons, A A

2001-12-01

293

EM2I: A Term in Search of the Infrastructure of Electronic Markets  

E-print Network

be treated as a research area for the research specialists of business information systems and electronic, in [34], "electronic markets" had a set of e-commerce business models such as "e-shop", "e- procurementEM2I: A Term in Search of the Infrastructure of Electronic Markets Jingzhi Guo Department

Guo, Jingzhi

294

Controlling protein adsorption on graphene for cryo-EM using low-energy hydrogen plasmas  

E-print Network

Controlling protein adsorption on graphene for cryo-EM using low-energy hydrogen plasmas Christopher J. Russo1 and Lori A. Passmore1 1Medical Research Council Laboratory of Molecular Biology taken before and after 80 s hydrogen plasma treatment used to measure change in lattice constant vis

Cai, Long

295

The Use of Electronic Monitoring (EM) Technologies in Alaskan Fisheries Prepared by  

E-print Network

species catch (PSC) on a factory trawler and monitor and enumerate discard aboard rockfish catcher vessels program. These issues included: 1) the cost of implementing EM, which can be similar to, or higher than of Alaska Rockfish Fishery Alaska Groundfish Databank, in conjunction with NMFS, has conducted several

296

Deteco de Ativao em Ressonncia Nuclear Magntica Funcional do Crebro PEDRO PAULO DE M. OLIVEIRA JR  

E-print Network

as a means to map the sensorial and motor activities into the brain. This paper presents an image processing images collected with a 1,5 Tesla MRI Scanner. Results, also presented here, indicate the feasibility de sinal em exames funcionais é da ordem de 5%, num aparelho de 1.5 Tesla. Isto #12;significa que

297

Fuzzy Comprehensive Evaluation of River Health Using (1\\/2, 2) EM Method  

Microsoft Academic Search

In this paper, river health evaluation is decomposed into a hierarchical structure. Weights for each index of each grade are determined with the (1\\/2,2) EM method. The relative membership degree of different evaluation grade standards is then calculated with a fuzzy comprehensive evaluation based on fuzzy theory. The results present a comprehensive evaluation of river health and a scientific basis

Zhijie Yin; Yuhui Guan; Alexander Baron; Leihua Geng

2009-01-01

298

Effect of EM on Soil Properties and Nutrient Cycling in a Citrus Agroecosystem  

Microsoft Academic Search

To test the effects of Effective Microorganisms (EM) on soil and on natural cycling of nutrients, a field investigation was conducted with citrus in the State of So Paulo, Brazil. A Typic Hapludox soil predominates as a deep, well-drained, clay soil with high hydrogen and aluminum contents and low base saturation, The organic matter content of the soil is moderate,

D. Paschoal; S. K. Homma; M. J. A. Jorge; M. C. S. Nogueira

299

FERMAT: A high frequency em scattering code from complex scenes including objects and environment  

Microsoft Academic Search

In this paper, a fast high frequency analysis method of complex 3D targets and environment is achieved by coupling electromagnetic asymptotic formulations and shooting and bouncing ray (SBR) approach. Different applications of the tools from EM fields evaluation are then presented.

H. J. Mametsa; S. Laybros; A. Berges; P. F. Combes; P. N'Guyen; P. Pitot

2006-01-01

300

Magnetic Properties of the Basalt in Hole EM 7, Mohole Project  

Microsoft Academic Search

The average direction of the remanent magnetization of the basalt layer at the bottom of hole EM 7 is inclined 36 above tile horizontal, indicating that the layer is reversely magnetized. Detailed demagnetization experiments with alternating magnetic fields to 800 oer- steds peak intensity indicate that the drilling operations did not remagnetize the basalts. The natural magnetization is extremely

Allan Cox; Richard R. Doell

1962-01-01

301

Use of the Electromagnetic-Induction Meter (EM38) as a Tool in Managing Salinisation  

NASA Astrophysics Data System (ADS)

Utilisation of an EM38 electromagnetic-induction meter is a cost-effective method for assessing field salinity and for experiments on the salt tolerance of crops. The EM38 meter can be used to map the distribution and severity of salinity. The instrument must be calibrated for temperature, moisture, texture, and other soil factors, such as the presence of magnetic minerals. The meter can be carried by an operator and readings recorded manually; it can be towed behind an all-terrain vehicle to map in a preset grid; or it can be used randomly with a Global Positioning System and data-logging equipment to map large areas. In field experiments in Alberta, Canada, the EM38 was used to help assess salt tolerance of 28 species of trees and 28 species of forage and turf grasses. In similar experiments in Western Australia, the usefulness of the EM38 meter was evaluated in helping to predict survival and growth of Eucalyptus globulus and pastures in saline soils. These techniques are now being incorporated into salinity-management strategies.

McKenzie, R. C.; George, R. J.; Woods, S. A.; Cannon, M. E.; Bennett, D. L.

1997-01-01

302

Description and comparison of algorithms for correcting anisotropic magnification in cryo-EM images  

E-print Network

Single particle electron cryomicroscopy (cryo-EM) allows for structures of proteins and protein complexes to be determined from images of non-crystalline specimens. Cryo-EM data analysis requires electron microscope images of randomly oriented ice-embedded protein particles to be rotated and translated to allow for coherent averaging when calculating three-dimensional (3-D) structures. Rotation of 2-D images is usually done with the assumption that the magnification of the electron microscope is the same in all directions, a condition that has been found to be untrue with some electron microscopes when used with the settings necessary for cryo-EM with a direct detector device (DDD) camera (Grant and Grigorieff, in preparation). Correction of images by linear interpolation in real space has allowed high-resolution structures to be calculated from cryo-EM images for symmetric particles (Grant and Grigorieff, in preparation). Here we describe and compare a simple real space method and a somewhat more sophisticat...

Zhao, Jianhua; Benlekbir, Samir; Rubinstein, John L

2015-01-01

303

O Feminino na Mdia: novos argumentos em busca de novos sentidos 1  

Microsoft Academic Search

Este artigo se prope a discutir sob o ponto da An lise Crtica de Discurso (ACD) a insero de novos discursos nas peas de publicidad e, direcionadas ao pblico feminino. Para elaborar uma breve anlise toma-se como objeto recortes da campanha da Linha Natura de cosmticos. Os pressupostos tericos est o em Baktin (2004), no que diz respeito representao

Eliane Penha Mergulho Dias

304

O pragmatismo em economia : bases filosficas para uma interpretao do discurso econmico  

Microsoft Academic Search

O trabalho tem por objetivo trazer elementos da corrente filosfica do pragmatismo para a discusso metodolgica em economia, particularmente no que diz respeito a teoria da verdade e suas implicaes para o debate epistemolgico. Aps apresentar as contribuies dos pioneiros do pragmatismo William James, John Dewey e Charles S. Peirce e discutir aspectos da obra de W. Quine e Richard

Paulo Srgio de Oliveira Simes Gala; Danilo Fernandes Arajo; Jos Mrcio Rego

2004-01-01

305

188 Oliveira et al. Quim. Nova SISTEMA DE INJEO EM FLUXO ESPECTROFOTOMTRICO PARA MONITORAR PERXIDO DE  

E-print Network

188 Oliveira et al. Quim. Nova SISTEMA DE INJE??O EM FLUXO ESPECTROFOTOM?TRICO PARA MONITORAR injection analysis; foto-Fenton. ArtigoQuim. Nova, Vol. 24, No. 2, 188-190, 2001. INTRODU??O A reação foto

Jardim, Wilson de Figueiredo

306

Maximum Likelihood Computations with Repeated Measures: Application of the EM Algorithm  

Microsoft Academic Search

The purpose of this article is to consider the use of the EM algorithm (Dempster, Laird, and Rubin 1977) for both maximum likelihood (ML) and restricted maximum likelihood (REML) estimation in a general repeated measures setting using a multivariate normal data model with linear mean and covariance structure (Anderson 1973). Several models and methods of analysis have been proposed in

Nan Laird; Nicholas Lange; Daniel Stram

1987-01-01

307

CHARACTERIZATION OF EM SEA CLUTTER WITH -STABLE DISTRIBUTION Anthony Fiche1  

E-print Network

CHARACTERIZATION OF EM SEA CLUTTER WITH -STABLE DISTRIBUTION Anthony Fiche1 , Jean-Christophe Cexus clutter are highly non-stationnary. The probability density function of the RCS has been mainly studied with the K distribution. In [1], the authors proved that the K distribution fits sea clutter data well

Paris-Sud XI, Université de

308

Are you under stress in EMS. Understanding the slippery slope of burnout and PTSD.  

PubMed

Burnout and PTSD are closely linked and often underreported in EMS. EMS classrooms do little or nothing to prepare providers for the inherent emotional stresses of emergency response and the "thick skin" culture of EMS may make many providers apprehensive about sharing their true feelings. Burnout is triggered by many of the same stresses that lead to the symptoms of PTSD and providers experiencing burnout that doesn't resolve within a few weeks may actually be experiencing PTSD. Be mindful of yourself and your fellow coworkers, particularly after a very traumatic response. And remember traumatic responses don't need to be as dramatic as Sept. 11, New Orleans after Hurricane Katrina or the Aurora, CO shootings to bother an EMS worker. In contrast, these are the calls where providers often receive the most attention. Instead, watch for the new father who just performed CPR on an infant the same age as his own, or the provider who just watched his or her friend die following a motor vehicle collision. Pay attention to yourself and colleagues, and be responsible and honest with yourself and others about when coping strategies are enough, and when they aren't. Finally, don't ever be afraid to seek help. PMID:23097838

Collopy, Kevin T; Kivlehan, Sean M; Snyder, Scott R

2012-10-01

309

ARALES DE LAGOAS EM UMA REA DO SEMI-RIDO BAIANO  

Microsoft Academic Search

RESUMO O presente trabalho trata das espcies de Arales ocorrentes em lagoas de uma rea do semi-rido baiano. A ordem apresenta, no local, duas famlias com cinco espcies: Lemna valdiviana Phil., Lemna aequinoctialis Welwitsch, Wolffiella lingulata (Hegelm.) Hegelm. e Wolffia columbiana Karsten (LEMNACEAE) e Pistia stratiotes L. (ARACEAE). PALAVRAS-CHAVE: Arales; plantas aquticas; Lemnaceae; Araceae. ABSTRACT This paper presents

Mrcia Gonalves Bezerra; Flvio Frana

310

IDENTIFICAC ~AO E RASTREAMENTO EM TEMPO REAL DE M ULTIPLOS AGENTES AUT ^ONOMOS  

E-print Network

- treamento em tempo real de objetos durante o jogo. Diversos experimentos reais s~ao realizados para^amera instalada a uma altura m´inima de 3 metros acima do campo ´e utilizada para capturar imagens do jogo, que s´aticas de jogos. As ac¸~oes no dom´inio s~ao r

Zhang, Richard "Hao"

311

Innovation on Energy Power Technology (17)Development of EMS/SCADA in TEPCO  

NASA Astrophysics Data System (ADS)

Effective Load Dispatching Automatic Controller (ELDAC) is an EMS/SCADA system for Central Load Dispatching Office in Tokyo Electric Power Company Inc. This paper introduces the progress of development of ELDAC, which forecasts demand, sets up the most efficient generation schedule, and controls total power from generators.

Suzuki, Mamoru

312

Cramer-Rao lower bound optimization of an EM-CCD-based scintillation gamma camera  

NASA Astrophysics Data System (ADS)

Scintillation gamma cameras based on low-noise electron multiplication (EM-)CCDs can reach high spatial resolutions. For further improvement of these gamma cameras, more insight is needed into how various parameters that characterize these devices influence their performance. Here, we use the Cramer-Rao lower bound (CRLB) to investigate the sensitivity of the energy and spatial resolution of an EM-CCD-based gamma camera to several parameters. The gamma camera setup consists of a 3 mm thick CsI(Tl) scintillator optically coupled by a fiber optic plate to the E2V CCD97 EM-CCD. For this setup, the position and energy of incoming gamma photons are determined with a maximum-likelihood detection algorithm. To serve as the basis for the CRLB calculations, accurate models for the depth-dependent scintillation light distribution are derived and combined with a previously validated statistical response model for the EM-CCD. The sensitivity of the lower bounds for energy and spatial resolution to the EM gain and the depth-of-interaction (DOI) are calculated and compared to experimentally obtained values. Furthermore, calculations of the influence of the number of detected optical photons and noise sources in the image area on the energy and spatial resolution are presented. Trends predicted by CRLB calculations agree with experiments, although experimental values for spatial and energy resolution are typically a factor of 1.5 above the calculated lower bounds. Calculations and experiments both show that an intermediate EM gain setting results in the best possible spatial or energy resolution and that the spatial resolution of the gamma camera degrades rapidly as a function of the DOI. Furthermore, calculations suggest that a large improvement in gamma camera performance is achieved by an increase in the number of detected photons or a reduction of noise in the image area. A large noise reduction, as is possible with a new generation of EM-CCD electronics, may improve the energy and spatial resolution by a factor of 1.5.

Korevaar, Marc A. N.; Goorden, Marlies C.; Beekman, Freek J.

2013-04-01

313

Cramer-Rao lower bound optimization of an EM-CCD-based scintillation gamma camera.  

PubMed

Scintillation gamma cameras based on low-noise electron multiplication (EM-)CCDs can reach high spatial resolutions. For further improvement of these gamma cameras, more insight is needed into how various parameters that characterize these devices influence their performance. Here, we use the Cramer-Rao lower bound (CRLB) to investigate the sensitivity of the energy and spatial resolution of an EM-CCD-based gamma camera to several parameters. The gamma camera setup consists of a 3mm thick CsI(Tl) scintillator optically coupled by a fiber optic plate to the E2V CCD97 EM-CCD. For this setup, the position and energy of incoming gamma photons are determined with a maximum-likelihood detection algorithm. To serve as the basis for the CRLB calculations, accurate models for the depth-dependent scintillation light distribution are derived and combined with a previously validated statistical response model for the EM-CCD. The sensitivity of the lower bounds for energy and spatial resolution to the EM gain and the depth-of-interaction (DOI) are calculated and compared to experimentally obtained values. Furthermore, calculations of the influence of the number of detected optical photons and noise sources in the image area on the energy and spatial resolution are presented. Trends predicted by CRLB calculations agree with experiments, although experimental values for spatial and energy resolution are typically a factor of 1.5 above the calculated lower bounds. Calculations and experiments both show that an intermediate EM gain setting results in the best possible spatial or energy resolution and that the spatial resolution of the gamma camera degrades rapidly as a function of the DOI. Furthermore, calculations suggest that a large improvement in gamma camera performance is achieved by an increase in the number of detected photons or a reduction of noise in the image area. A large noise reduction, as is possible with a new generation of EM-CCD electronics, may improve the energy and spatial resolution by a factor of 1.5. PMID:23552717

Korevaar, Marc A N; Goorden, Marlies C; Beekman, Freek J

2013-04-21

314

Final report: Key comparison of 50/60 Hz power SIM.EM-K5  

NASA Astrophysics Data System (ADS)

Under the auspices of the Committee Consultative of Electromagnetism, CCEM, the SIM Electromagnetic Working Group carried out a key comparison of power standards at 50/60 Hz. This key comparison, identified as SIM.EM-K5, aims to provide a link to various NMIs in the SIM region to the CCEM-K5 key comparison on 50/60 Hz power completed in 2001 and piloted by NIST. Measurements in the SIM.EM-K5 comparison were carried out from May 2010 to March 2012, including testing points of active and reactive power. CENAM was the pilot laboratory. Differences between the measurement results of the participating laboratories and the reference value of this key comparison, calculated at each of all the testing points, show a good infrastructure of national standards of measurement of electric power in the SIM region. Based on previous work, a link has been estimated between the results of the CCEM-K5 and the SIM.EM-K5 key comparisons, whose results were reported in 2002 and 2014, respectively. From the link it is shown that the measurement results of SIM.EM-K5 comparison are well supported. The SIM.EM-K5 comparison is a rewording exercise of comparison of the national standards of measurement as recommended by the CIPM. The participating laboratories are fully recommended for their enthusiastic participation in the comparison. Their individual efforts to maintain the national standards of power measurement are acknowledged. Main text. To reach the main text of this paper, click on Final Report. Note that this text is that which appears in Appendix B of the BIPM key comparison database kcdb.bipm.org/. The final report has been peer-reviewed and approved for publication by the CCEM, according to the provisions of the CIPM Mutual Recognition Arrangement (CIPM MRA).

Carranza, R.; Campos, S.; Castruita, A.; Nelson, T.; Ribeiro, A.; So, E.; Di Lillo, L.; Spaggiari, A.; Slomovitz, D.; Izquierdo, Daniel; Faverio, Carlos; Postigo, H.; Daz, H.; Sanchez, H.; Gonzalez, J.; Zipaquir Triana, lvaro

2015-01-01

315

Foreground object detection using top-down information based on EM framework.  

PubMed

In this paper, we present a novel foreground object detection scheme that integrates the top-down information based on the expectation maximization (EM) framework. In this generalized EM framework, the top-down information is incorporated in an object model. Based on the object model and the state of each target, a foreground model is constructed. This foreground model can augment the foreground detection for the camouflage problem. Thus, an object's state-specific Markov random field (MRF) model is constructed for detection based on the foreground model and the background model. This MRF model depends on the latent variables that describe each object's state. The maximization of the MRF model is the M-step in the EM framework. Besides fusing spatial information, this MRF model can also adjust the contribution of the top-down information for detection. To obtain detection result using this MRF model, sampling importance resampling is used to sample the latent variable and the EM framework refines the detection iteratively. Besides the proposed generalized EM framework, our method does not need any prior information of the moving object, because we use the detection result of moving object to incorporate the domain knowledge of the object shapes into the construction of top-down information. Moreover, in our method, a kernel density estimation (KDE)-Gaussian mixture model (GMM) hybrid model is proposed to construct the probability density function of background and moving object model. For the background model, it has some advantages over GMM- and KDE-based methods. Experimental results demonstrate the capability of our method, particularly in handling the camouflage problem. PMID:22645266

Liu, Zhou; Huang, Kaiqi; Tan, Tieniu

2012-09-01

316

EMS & high reliability organizing. Achieving safety & reliability in the dynamic, high-risk environment.  

PubMed

Enactment describes how we engage the situation to make sense of it. But by our engagement, we also change the situation. Our presence, alone, will change the situation. At times, we may fail to act. Here, we are at risk of interpreting this as a sense of personal "limitation" in what we can do. This will inhibit us in engaging in other incidents. Rather, we should understand that while we may often fail after engaging, acting is part of performing in uncertainty. In EMS, the system, as it's set up, can lead people to fail to act. For reasons specific to a system, the EMT or paramedic may not act for fear of doing something wrong. This failure to act reinforces the limitations one feels. When you avoid acting, you don't learn. By avoiding testing ourselves, we conclude that constraints exist. This is contrary to the historical approach public safety and EMS personnel use to learn. In the past, it was accepted that we learn what works through action. We also perceive, or sensemake, through interaction with the environment. We watch for responsiveness to our actions, such as cooperation from bystanders vs. defiance. However, this is influenced by how we approach the scene. One EMS provider may obtain cooperation while another experiences defiance. We bracket this information by placing it in context. This interaction is difficult to communicate to those not present at the incident, because they don't know when one "story" begins and when another leaves off. HROs have developed in organizations that adapted to time constraints in uncertain and hazardous environments. There, lessons were actually learned through the blood of live-or-die situations. Academics have codified these principles and concepts that are accessible to EMS caregivers. EMS can benefit from the principles and concepts of HRO through improved performance by individuals and stronger organizations. PMID:24159730

Van Stralen, Daved; Mercer, Thomas A

2013-06-01

317

Fabrication of carbon films with ? 500nm holes for cryo-EM with a direct detector device.  

PubMed

Single particle electron cryomicroscopy (cryo-EM) is often performed using EM grids coated with a perforated or holey layer of amorphous carbon. Regular arrays of holes enable efficient cryo-EM data collection and several methods for the production of micropatterned holey-carbon film coated grids have been described. However, a new generation of direct detector device (DDD) electron microscope cameras can benefit from hole diameters that are smaller than currently available. Here we extend a previously proposed method involving soft lithography with a poly(dimethylsiloxane) (PDMS) stamp for the production of holey-carbon film coated EM grids. By incorporating electron-beam (e-beam) lithography and modifying the procedure, we are able to produce low-cost high-quality holey-carbon film coated EM grids with ?500nm holes spaced 4?m apart centre-to-centre. We demonstrate that these grids can be used for cryo-EM. Furthermore, we show that by applying image shifts to obtain movies of the carbon regions beside the holes after imaging the holes, the contrast transfer function (CTF) parameters needed for calculation of high-resolution cryo-EM maps with a DDD can be obtained efficiently. PMID:24269484

Marr, Chelsea R; Benlekbir, Samir; Rubinstein, John L

2014-01-01

318

Investigating metal removal potential by Effective Microorganisms (EM) in alginate-immobilized and free-cell forms.  

PubMed

Metal removal potential of both alginate-immobilized and free-cells of Effective Microorganisms (EM-1 Inoculant) was investigated in this study. Results revealed that removal of Cr(III), Cu(II) and Pb(II) followed a similar trend where alginate-immobilized EM were more efficient compared to free-cells of EM. For these metals, 0.940, 2.695 and 4.011 mg g(-1) of Cr(III), Cu(II) and Pb(II) were removed compared to only 0.160, 0.859 and 0.755 mg ml(-1) removed by free-cells, respectively. The higher efficiency of alginate-immobilized EM was primarily attributed to the alginate matrix. This was evident when both alginate-immobilized EM and plain alginate beads (without EM), were not significantly different in their removal efficacies. Presence of alginate also enhanced the use of the biosorbents as maximum metal sorption was achieved after 120 min as opposed to only 60 min for free-cells. EM per se in immobilized or free-cell forms did not enhance metal removal efficacy. PMID:24001691

Ting, Adeline Su Yien; Rahman, Nurul Hidayah Abdul; Isa, Mohamed Ikmal Hafiz Mahamad; Tan, Wei Shang

2013-11-01

319

An optically scanned EMS reporting form and analysis system for statewide use: development and five years' experience.  

PubMed

Analysis of emergency medical services (EMS) systems data is crucial to planning, education, research, and quality assurance programs. Currently, comparative analysis of EMS data between regions or states is virtually impossible due to wide variations in data collection and analysis methods. To devise a practical and uniform EMS reporting system, we referenced the minimum data set (MDS) established by the federal government in 1974 and surveyed 22 states known to be using uniform reporting systems. In developing our final data set, elements were added based on inclusion in the MDS, national survey results, a review of current EMS literature, and consensus of local EMS providers. This set of 48 elements then was incorporated into a reporting form using narrative and optically scanned formats, allowing automated data collection for computer analysis. After a pilot study, the system was improved to allow high-speed ink reading and large volume data storage and analysis using a microcomputer. This system has subsequently been adopted by seven states. The combined data base exceeds 250,000 cases. Error screening algorithms ensure data integrity and are also used for quality assurance. Customized output reports can be generated within minutes and have assisted in EMS quality assurance, planning, and research. We believe that the successful performance of this system supports the use of the suggested data elements as well as optical scanning and microcomputer analysis of EMS data. PMID:1746736

Joyce, S M; Brown, D E

1991-12-01

320

Measurement of EM Field Inside a Cruising Aircraft: Potential Problems for the Use of Mobile Phones on Board  

NASA Astrophysics Data System (ADS)

Electromagnetic (EM) emissions from portable electronic devices (PEDs) carried onboard aircraft can interfere with avionic systems. Several onboard systems using EM waves have been planned, such as mobile communications and UWB (ultra-wideband) entertainment services distribution. Manufacturers of this system develop schemes to avoid electromagnetic interference by the transmissions (emissions) of mobile phones with avionic systems; some local-specific problems still remain. The purpose of this chapter is to investigate to what extent non-GSM transmissions from the ground base stations reach inside a cruising aircraft. The EM field at the base station frequency bands is measured in a cruising small aircraft.

Kohmura, A.; Picard, J.; Yonemoto, N.; Yamamoto, K.

321

2009 DOE-EM LONG-TERM MONITORING TECHNICAL FORUM SUMMARY REPORT  

SciTech Connect

The U. S. Department of Energy's (DOE) Office of Environmental Management (EM) has the responsibility for cleaning up 60 sites in 22 states that were associated with the legacy of the nation's nuclear weapons program and other research and development activities. These sites are unique and many of the technologies needed to successfully disposition the associated wastes have yet to be developed or would require significant re-engineering to be adapted for future EM cleanup efforts. In 2008, the DOE-EM Engineering and Technology Program (EM-22) released the Engineering and Technology Roadmap in response to Congressional direction and the need to focus on longer term activities required for the completion of the aforementioned cleanup program. One of the strategic initiatives included in the Roadmap was to enhance long term performance monitoring as defined by 'Develop and deploy cost effective long-term strategies and technologies to monitor closure sites (including soil, groundwater, and surface water) with multiple contaminants (organics, metals and radionuclides) to verify integrated long-term cleanup performance'. To support this long-term monitoring (LTM) strategic initiative, EM 22 and the Savannah River National Laboratory (SRNL) organized and held an interactive symposia, known as the 2009 DOE-EM Long-Term Monitoring Technical Forum, to define and prioritize LTM improvement strategies and products that could be realized within a 3 to 5 year investment time frame. This near-term focus on fundamental research would then be used as a foundation for development of applied programs to improve the closure and long-term performance of EM's legacy waste sites. The Technical Forum was held in Atlanta, GA on February 11-12, 2009, and attended by 57 professionals with a focus on identifying those areas of opportunity that would most effectively advance the transition of the current practices to a more effective strategy for the LTM paradigm. The meeting format encompassed three break-out sessions, which focused on needs and opportunities associated with the following LTM technical areas: (1) Performance Monitoring Tools, (2) Systems, and (3) Information Management. The specific objectives of the Technical Forum were to identify: (1) technical targets for reducing EM costs for life-cycle monitoring; (2) cost-effective approaches and tools to support the transition from active to passive remedies at EM waste sites; and (3) specific goals and objectives associated with the lifecycle monitoring initiatives outlined within the Roadmap. The first Breakout Session on LTM performance measurement tools focused on the integration and improvement of LTM performance measurement and monitoring tools that deal with parameters such as ecosystems, boundary conditions, geophysics, remote sensing, biomarkers, ecological indicators and other types of data used in LTM configurations. Although specific tools were discussed, it was recognized that the Breakout Session could not comprehensively discuss all monitoring technologies in the time provided. Attendees provided key references where other organizations have assessed monitoring tools. Three investment sectors were developed in this Breakout Session. The second Breakout Session was on LTM systems. The focus of this session was to identify new and inventive LTM systems addressing the framework for interactive parameters such as infrastructure, sensors, diagnostic features, field screening tools, state of the art characterization monitoring systems/concepts, and ecosystem approaches to site conditions and evolution. LTM systems consist of the combination of data acquisition and management efforts, data processing and analysis efforts and reporting tools. The objective of the LTM systems workgroup was to provide a vision and path towards novel and innovative LTM systems, which should be able to provide relevant, actionable information on system performance in a cost-effective manner. Two investment sectors were developed in this Breakout Session. The last Breakout Session of the Technical Forum

Mayer, J.

2009-09-30

322

Compilao de dados atmicos e moleculares do UV ao IV prximo para uso em sntese espectral  

NASA Astrophysics Data System (ADS)

Espectros sintticos so utis em uma grande variedade de aplicaes, desde anlise de abundncias em espectros estelares de alta resoluo ao estudo de populaes estelares em espectros integrados. A confiabilidade de um espectro sinttico depende do modelo de atmosfera adotado, do cdigo de formao de linhas e da qualidade dos dados atmicos e moleculares que so determinantes no clculo das opacidades da fotosfera. O nosso grupo no departamento de Astronomia no IAG tem utilizado espectros sintticos h mais de 15 anos, em aplicaes voltadas principalmente para a anlise de abundncias de estrelas G, K e M e populaes estelares velhas. Ao longo desse tempo, as listas de linhas vieram sendo construdas e atualizadas continuamente, e alguns acrscimos recentes podem ser citados: Castilho (1999, tomos e molculas no UV), Schiavon (1998, bandas moleculares de TiO) e Melendez (2001, tomos e molculas no IV prximo). Com o intuito de calcular uma grade de espectros do UV ao IV prximo para uso no estudo de populaes estelares velhas, se fazia necessrio compilar e homogeneizar as diversas listas em apenas uma lista atmica e uma molecular. Nesse processo, a nova lista compilada foi correlacionada com outras bases de dados (NIST, Kurucz Database, O' Brian et al. 1991) para atualizao dos parmetros que caracterizam a transio atmica (comprimento de onda, log gf e potencial de excitao). Adicionalmente as constantes de interao C6 foram calculadas segundo a teoria de Anstee & O'Mara (1995) e artigos posteriores. As bandas moleculares de CH e CN foram recalculadas com o programa LIFBASE (Luque & Crosley 1999). Nesse poster esto detalhados os procedimentos citados acima, as comparaes entre espectros calculados com as novas listas e espectros observados em alta resoluo do Sol e de Arcturus, e uma anlise do impacto decorrente da utilizao de diferentes modelos de atmosfera no espectro sinttico. Ao final, temos uma lista de linhas atmicas com mais de 24.000 linhas e uma lista molecular com as molculas CN, CH, OH, NH, MgH, C2, TiO Gama, CO, FeH, adequadas ao estudo de estrelas G, K e M e populaes estelares velhas.

Coelho, P.; Barbuy, B.; Melendez, J.; Allen, D. M.; Castilho, B.

2003-08-01

323

Imugenicidade e segurana da vacina contra influenza A H1N1/2009 em pacientes com dermatomiosite juvenil.  

E-print Network

??Objetivos: Avaliar a imunogenicidade e segurana da vacina anti-influenza A/H1N1 2009 em pacientes com dermatomiosite juvenil (DMJ) comparados com controles saudveis e a possvel associao (more)

Vanessa Ramos Guissa

2013-01-01

324

Contribuies ao estudo do eletrocardiograma e da presso arterial em preguias, Bradypus variegatus.  

E-print Network

??Os objetivos deste trabalho foram caracterizar o eletrocardiograma (ECG) e estabelecer o ritmo endgeno da presso arterial (PA) em livre-curso, correlacionando-o ocorrncia de comportamentos, (more)

Eduardo Magalhes da Silva

2007-01-01

325

AlmAnAc SUPPlEmEnT January 17, 1995 S-University of Pennsylvania  

E-print Network

AlmAnAc SUPPlEmEnT January 17, 1995 S- The University of Pennsylvania Administrative Restructuring summary as advised in a letter mailed recently to members of the University community. #12;AlmAnAc SUPPl

Sharp, Kim

326

In vivo studies in the mouse to define a threshold for the genotoxicity of EMS and ENU.  

PubMed

The presence of ethyl methanesulfonate (EMS) in tablets of a HIV medication triggered non-clinical studies into the dose response for mutation analysis after chronic dosing. Although there are a multitude of in vitro and in vivo studies on the genotoxic activity of EMS, no lifetime carcinogenicity studies, repeat dose mutation data or exposure analysis are available to serve as a solid basis for risk assessment. For alkylators like EMS it is generally assumed that the dose response for mutagenicity (and by default for carcinogenicity) is linear - indicating that no 'safe' dose does exist. A recent in vitro genotoxicity study [S.H. Doak, G.J. Jenkins, G.E. Johnson, E. Quick, E.M. Parry, J.M. Parry, Mechanistic influences for mutation induction curves after exposure to DNA-reactive carcinogens, Cancer Res. 67 (2007) 3904-3911] provided evidence, however, that the dose-response curve for mutagenic and clastogenic activity of EMS was thresholded - in contrast to ethylnitrosourea (ENU) tested in parallel. For risk assessment we sought to verify the existence of a threshold for mutagenic and clastogenic activity in vivo using the micronucleus test (MNT) and gene mutation test (MutaMouse), with the aim to provide reassurance to the patients that their exposure to EMS did not carry a toxicological risk. Dose levels ranging from 1.25 to 260mg/(kgday) were applied for up to 28 days. As reference we included ENU at doses of 1.1-22mg/(kgday). Our studies showed that daily doses of EMS up to 25mg/(kgday) (bone marrow, GI tract) and 50mg/(kgday) (liver) did not induce mutations in the lacZ gene in the three organs tested. Doses of EMS up to 80mg/(kgday) did not induce micronuclei in mouse bone marrow. Only at higher dose levels the genotoxic activity of EMS became apparent. Dose fractionation of EMS (28 times 12.5mg/kg versus a single high dose 380mg/kg) in the MutaMouse study provided further convincing evidence for the thresholded dose response of EMS and showed that no accumulation below the threshold was occurring. For ENU no threshold was apparent and dose fractionation indicated additivity. However, there are arguments that a threshold in the dose region of about 0.4mg/(kgday) ENU might exist. PMID:19376265

Gocke, Elmar; Mller, Lutz

2009-08-01

327

Suporte para vistas em ambientes de gesto de rede Palavras chave: Vistas, Gesto de Rede, CRC2000.  

E-print Network

1 Suporte para vistas em ambientes de gestão de rede Palavras chave: Vistas, Gestão de Rede, CRC2000. Resumo Em sistemas de gestão de redes, uma vista representa uma perspectiva parcelar do universo sistema Scotty, uma conhecida plataforma de gestão de rede de domínio público. I. Introdução A grande

Rodrigues, Luís E.T.

328

Deteco Cooperativa de Intruses em Redes Carrier Ethernet Pan Jieke1, Joo Redol1, Miguel Correia2  

E-print Network

Detecção Cooperativa de Intrusões em Redes Carrier Ethernet Pan Jieke1, João Redol1, Miguel Correia, 1749-016 Lisboa, Portugal mpc@di.fc.ul.pt Resumo Hoje em dia os elementos de rede (NEs) da camada 2 do interno. Este trabalho apresenta um esquema para proteger infra-estruturas de rede Carrier Ethernet de

Correia, Miguel

329

APLICAO DE AGENTES MVEIS EM REDES DE SENSORES SEM FIO PARA LOCALIZAO E SEGUIMENTO DE OBJETOS ALVOS MVEIS  

E-print Network

APLICA??O DE AGENTES M?VEIS EM REDES DE SENSORES SEM FIO PARA LOCALIZA??O E SEGUIMENTO DE OBJETOS sistema embarcado baseada em uma aplicação de localização e seguimento de objeto alvo utilizando redes de sensores sem fio (RSSF). Sendo os nós da rede fixos, realiza-se o seguimento do alvo utilizando agentes

Wagner, Flávio Rech

330

Immunodiagnosis of alveolar echinococcosis by enzyme-linked immunosorbent assay using a partially purified Em18/16 enriched fraction.  

PubMed

An improved enzyme-linked immunosorbent assay (ELISA) system using partially purified Eml8/16 enriched fraction (PP-Em18/16) prepared by isoelectric focusing was evaluated for serodiagnosis of alveolar echinococcosis (AE). The PP-Em18/16-ELISA was compared with Em2plus-ELISA by using sera from AE and cystic echinococcosis (CE) patients in China, where both AE and CE are endemic; sera from CE patients in Australia, where only CE exists; and sera from patients with cysticercosis, paragonimiasis, or sparganosis in Korea, where no indigenous AE or CE exists. We used Em2plus-ELISA as a standard ELISA and found 24.6% (17 of 69 specimens) cross-reactivity with sera from CE. Furthermore, some of the sera from paragonimiasis, sparganosis, and cysticercosis patients were also cross-reactive in the Em2plus-ELISA. When we tested for similar cross-reactivity in the same sera from CE patients by PP-Em18/16-ELISA (23.2%, 16 of 69), it became evident that the specificity of the PP-Em18/16-ELISA was better than that of the Em2plus-ELISA, since no sera from patients with the examined parasitic diseases except CE showed cross-reactivity. Some CE patients from China showed exceptionally high levels of antibody in comparison with those of CE patients from Australia, where no AE occurs. It is speculated that these patients with strongly positive cases of CE from China may have been exposed to both species of Echinococcus. PMID:9008281

Ito, A; Ma, L; Itoh, M; Cho, S Y; Kong, Y; Kang, S Y; Horii, T; Pang, X L; Okamoto, M; Yamashita, T; Lightowlers, M W; Wang, X G; Liu, Y H

1997-01-01

331

Hydrolysis of 4-Hydroxybenzoic Acid Esters (Parabens) and Their Aerobic Transformation into Phenol by the Resistant Enterobacter cloacae Strain EM  

Microsoft Academic Search

Enterobacter cloacae strain EM was isolated from a commercial dietary mineral supplement stabilized by a mixture of methylparaben and propylparaben. It harbored a high-molecular-weight plasmid and was resistant to high concentrations of parabens. Strain EM was able to grow in liquid media containing similar amounts of parabens as found in the mineral supplement (1,700 and 180 mg of methyl and

NELLY VALKOVA; FRANCOIS LEPINE; LOREDANA VALEANU; MARYSE DUPONT; LOUISETTE LABRIE; JEAN-GUY BISAILLON; REJEAN BEAUDET; FRANCOIS SHARECK; RICHARD VILLEMUR

2001-01-01

332

A theoretical way of distinguishing the thermal and non-thermal effects in biological tissues subject to EM radiation  

Microsoft Academic Search

Effects of electromagnetic (EM) radiation to the biological bodies keep receiving great attentions over the years due to\\u000a extensive applications of many electric devices such as cellular phones, microwave ovens, hyperthermia apparatus, which may\\u000a emit EM wave during operation. Studies on the mechanisms thus induced on the human body are critical for the safe use of the\\u000a devices. In this

Y.-G. Lv; J. Liu

2003-01-01

333

Comparing EM Models to RCS Measurements for Building-Penetration Radar  

SciTech Connect

For the DARPA VisiBuilding program, SRI International and Lawrence Livermore National Laboratory are using a variety of electromagnetic (EM) simulation codes and measurement techniques to analyze how radar pulses interact with building structures and materials. Of primary interest is how interior wall and corner reflections are delayed, attenuated, and dispersed by the exterior wall materials. In this paper, we compare microwave frequency-domain radar cross section (RCS) chamber measurements of scale models of simple buildings to finite-element and finite-difference full-wave time-domain and ray-tracing models. The ability to accurately reconstruct the building from these models is compared with the reconstruction from chamber measurements. We observe that careful attention to the spatial sampling in the EM models is essential to achieving good reconstruction at the higher frequencies.

Fasenfest, B; Ueberschaer, R

2007-05-18

334

Statistical analysis of the influence of forces on particles in EM driven recirculated turbulent flows  

NASA Astrophysics Data System (ADS)

The present paper contains an analysis of the statistical distribution of forces affecting non-conducting particles dispersed in an EM induced recirculated flow in induction furnaces. The simulation is conducted adopting the LES-based Euler-Lagrange approach in the limit of dilute conditions (one-way coupling). It is done by means of a development of OpenFOAM software code. The used Lagrange equation for particle tracking includes drag, EM, buoyancy, lift, acceleration and added mass forces. The relevant approximations for the forces are chosen on the basis of the statistical analysis of the non-dimensional parameters (particle Reynolds number, shear stress and acceleration parameter). The effect of force distribution on particle homogenization is described under different density ratios and particle sizes. The recommendations of the consistence of the Lagrange model for the simulation of the particle motion in the laboratory scale induction crucible furnace are given in conclusion.

?epanskis, M.; Jakovi?s, A.; Baake, E.

2011-12-01

335

Using cryo-EM to measure the dipole potential of a lipid membrane  

PubMed Central

The dipole potential of a lipid bilayer membrane accounts for its much larger permeability to anions than cations and affects the conformation and function of membrane proteins. The absolute value of the dipole potential has been very difficult to measure, although its value has been estimated to range from 200 to 1,000 mV from ion translocation rates, the surface potential of lipid monolayers, and molecular dynamics calculations. Here, a point charge probe method was used to investigate the dipole potentials of both ester and ether lipid membranes. The interactions between electrons and lipid molecules were recorded by phase-contrast imaging using cryo-EM. The magnitude and the profile of the dipole potential along the bilayer normal were obtained by subtracting the contribution of the atomic potential from the cryo-EM image intensity. The peak dipole potential was estimated to be 510 and 260 mV for diphytanoylphosphatidylcholine and diphytanylphosphatidylcholine, respectively. PMID:17116859

Wang, Liguo; Bose, Pulkit S.; Sigworth, Fred J.

2006-01-01

336

Helicopter EMS Transport Outcomes Literature: Annotated Review of Articles Published 20072011  

PubMed Central

Helicopter EMS (HEMS) and its possible association with outcomes improvement continues to be a subject of discussion. As is the case with other scientific discourse, debate over HEMS usefulness should be framed around an evidence-based assessment of the relevant literature. In an effort to facilitate the academic pursuit of assessment of HEMS utility, in late 2000 the National Association of EMS Physicians' (NAEMSP) Air Medical Task Force prepared annotated bibliographies of the HEMS-related outcomes literature. As a result of that work, two review articles, one covering HEMS use in nontrauma and the other in trauma, published in 2002 in Prehospital Emergency Care surveyed HEMS outcomes-related literature published between 1980 and mid-2000. The project was extended with two subsequent reviews covering the literature through 2006. This review continues the series, outlining outcomes-associated HEMS literature for the three-year period 2007 through the first half of 2011. PMID:22288016

Brown, Brandon S.; Pogue, Korby A.; Williams, Emily; Hatfield, Jesse; Thomas, Matthew; Arthur, Annette; Thomas, Stephen H.

2012-01-01

337

A marginalized MAP approach and EM optimization for pair-wise registration.  

PubMed

We formalize the pair-wise registration problem in a maximum a posteriori (MAP) framework that employs a multinomial model of joint intensities with parameters for which we only have a prior distribution. To obtain an MAP estimate of the aligning transformation alone, we treat the multinomial parameters as nuisance parameters, and marginalize them out. If the prior on those is uninformative, the marginalization leads to registration by minimization of joint entropy. With an informative prior, the marginalization leads to minimization of the entropy of the data pooled with pseudo observations from the prior. In addition, we show that the marginalized objective function can be optimized by the Expectation-Maximization (EM) algorithm, which yields a simple and effective iteration for solving entropy-based registration problems. Experimentally, we demonstrate the effectiveness of the resulting EM iteration for rapidly solving a challenging intra-operative registration problem. PMID:17633738

Zllei, Lilla; Jenkinson, Mark; Timoner, Samson; Wells, William

2007-01-01

338

REX-ISOLDE RFQ Beam Dynamics Studies using CST EM Studio  

E-print Network

The original CNC milling files used to machine the electrodes of the REX-ISOLDE RFQ were acquired in late 2012 and electrostatic simulations were carried out using CST EM Studio in order to attain a 3D field map of the electric fields in the region around the beam axis. The objective was to construct a beam dynamics simulation tool that frees us from the constraints of the PARMTEQM code, which was used to design the RFQ, and that will afford us more flexibility in the studies needed for pre-bunching into the RFQ with an external multi-harmonic buncher. This note details the geometry of the electrodes and their simulation in CST EM Studio, the implementation of particle tracking in the computed field map using TRACK and benchmarking studies with PARMTEQM v3.09.

Fraser, M A

2014-01-01

339

Auswirkungen von anthropogenen Einflssen auf einen Kstengrundwasserleiter am Beispiel des Ems-stuars  

NASA Astrophysics Data System (ADS)

The coastal aquifer system of Moormerland, Eastern Frisia (Germany), is influenced by a variety of anthropogenic impacts, e.g. dredging of the riverbed of the tidal-influenced Ems River, construction of the Ems flood barrier at Gandersum, as well as groundwater abstraction and land drainage close to the river. In order to predict the future evolution of groundwater quantity and quality in this area, several research projects have been initiated over the last 14 years. The investigations included an extensive geochemical survey and analysis of the hydraulic conditions of groundwater, seawater and river water. Environmental tracers with a wide range of half-lives allowed the reconstruction of past environmental conditions and the corresponding impacts on the hydraulic regime. Model calculations indicate that the current status represents a transition between the prevailing pristine conditions in deeper parts of the aquifer and conditions which are dominantly constrained by human impact and which will lead to increased saltwater intrusion.

Fhrbter, Jens Fred; Sltenfu, Jrgen; Purtschert, Roland

2015-01-01

340

User awards EMS bid based on cheap 5-yr service offer  

SciTech Connect

A local contractor bidding Barber-Colman's Network 2100 energy management system (EMS) made the winning bid for two schools in Jenison, Michigan. The system will be fully operational in a few weeks, with energy savings available in February. Conditions for the bidding were that the installed cost would not exceed a $100,000 budget, but the five-year maintenance agreement covering both the new EMS and some existing controls was a major in the selection. The firm was already performing some maintenance on the existing equipment, which gave it a foot in the door. The new systems should reduce energy expenses by about $30,000 a year and pay for itself in about 3.3 years. Two rounds of bidding were necessary to get the price within the specification. The winning firm was not the low bidder, but the maintenance contract combined with the installation bid was the best package.

Springer, N.

1986-01-20

341

System concept definition of the Grumman superconducting Electromagnetic Suspension (EMS) Maglev design  

NASA Technical Reports Server (NTRS)

Grumman, under contract to the Army Corps of Engineers, completed a System Concept Definition (SCD) study to design a high-speed 134 m/s (300 m.p.h.) magnetically levitated (Maglev) transportation system. The primary development goals were to design a Maglev that is safe, reliable, environmentally acceptable, and low-cost. The cost issue was a predominant one, since previous studies have shown that an economically viable Maglev system (one that is attractive to investors for future models of passenger and/or freight transportation) requires a cost that is about $12.4 M/km ($20 Million per mile). The design is based on the electromagnetic suspension (EMS) system using superconducting iron-core magnets mounted along both sides of the vehicle. The EMS system has several advantages compared to the electrodynamic suspension (EDS) Maglev systems such as low stray magnetic fields in the passenger cabin and the surrounding areas, uniform load distribution along the full length of the vehicle, and small pole pitch for smoother propulsion and ride comfort. It is also levitated at all speeds and incorporates a wrap-around design of safer operation. The Grumman design has all the advantages of an EMS system identified above, while eliminating (or significantly improving) drawbacks associated with normal magnet powered EMS systems. Improvements include larger gap clearance, lighter weight, lower number of control servos, and higher off line switching speeds. The design also incorporates vehicle tilt (plus or minus 9 deg) for higher coordinated turn and turn out speed capability.

Proise, M.

1994-01-01

342

MiCCS4Mobile Middleware para Comunicao e Coordenao Segura em Redes Ad-hoc  

E-print Network

MiCCS4Mobile Middleware para Comunicação e Coordenação Segura em Redes Ad-hoc com Participantes desenvolvimento de aplicações móveis. Algumas aplicações exploram protocolos de redes sem fios e a mobilidade dos dispositivos para aumentar as suas funciona- lidades. A classe de protocolos de redes sem fios com dispositivos

Neves, Nuno

343

Design, construction and performance of an EMS-based HTS maglev vehicle  

Microsoft Academic Search

A laboratory-scale EMS-based HTS maglev vehicle operating over a 1.5m guideway has been successfully constructed. The fully integrated system consists of a vehicle chassis, four dependent magnetic circuits, four distance sensors, and control and power amplification circuits. As key component of the system, each magnetic circuit includes a U-shape iron core with one HTS coil forming each pole. Eight HTS

Chen Gu; Menglin Liu; Huawei Xing; Tong Zhou; Wensheng Yin; Jun Zong; Zhenghe Han

2005-01-01

344

3D Coupled Electromechanics for MEMS: Applications of CoSolve-EM  

Microsoft Academic Search

Micro-electro-mechanical systems (MEMS) are often designed on scales at which electrostatic forces are capable of moving or deforming the parts of the system. In this regime accurate prediction of device behavior may require 3D coupled simulations between the electrostatic and mechanical domains. We have recently developed CoSolve-EM, a coupled solver for 3D quasi-static electro-mechanics. In this paper, we demonstrate the

J. R. Gilbert; R. Legtenberg; S. D. Senturia

1993-01-01

345

Brecht e Cordel: Distanciamento e Protesto em Se Correr o Bicho Pega  

E-print Network

brasileo," Mundo Nuevo, Num. 30 (diciembre 1968), 80. 3. Maria Helena Kiihner, "Reflexes sobre um teatro em tempo de sntese," Revista Civiliza o Brasileira, Num. 4 (junho 1968), 37. (Caderno especial, No. 2) 4. Oduvaldo Vianna Filho e Ferreira... Grupo Opinio que at ento apresentara seleo de autores nacionais e estrangeiros acompanhadas de msica,2 como Liberdade, Liberdade, e elaboraram uma pea de reao anti burguesa dentro da realidade brasileira. Ao mesmo tempo que a obra um...

Ishmael-Bissett, Judith

1977-10-01

346

UNIVERSIDADE DE BRASLIA PROGRAMA DE RESIDNCIA MDICA VETERINRIA EM CLNICA E CIRURGIA DE  

E-print Network

-se candidatos residentes no Brasil ou no exterior. 3.5 Poderão inscrever-se no processo seletivo candidatos em listada no currículo. 3.5.5. Cópia de Documento de Identidade, Cópia do CPF. 3.5.6. Comprovante original do recolhimento da taxa de inscrição no valor de R$ 100,00 (cem reais) no Banco do Brasil (001

Maier, Rudolf Richard

347

UNIVERSIDADE DE BRASLIA PROGRAMA DE RESIDNCIA MDICO VETERINRIA EM CLNICA CIRRGIA DE  

E-print Network

-se candidatos residentes no Brasil ou no exterior. 3.5 Poderão inscrever-se no processo seletivo candidatos em listada no currículo. 3.5.5. Cópia de Documento de Identidade, Cópia do CPF. 3.5.6. Comprovante original do recolhimento da taxa de inscrição no valor de R$ 100,00 (cem reais) no Banco do Brasil (001

Maier, Rudolf Richard

348

Estudo etnobotnico em duas comunidades rurais (Limeira e Ribeiro Grande) de Guaratuba (Paran, Brasil)  

Microsoft Academic Search

RESUMO: Realizou-se levantamento etnobotnico em duas comunidades rurais etnicamente distintas (Limeira e Ribeiro Grande) de Guaratuba (Paran, Brasil) para identificar plantas utilizadas na teraputica popular, utilizando-se entrevistas semi-estruturadas (n= 11 e n= 7, respectivamente). Alm de informaes scio-econmicas sobre a populao amostrada, as seguintes informaes sobre o uso de plantas medicinais foram registradas: nome popular, indicao teraputica, parte usada, modo

349

Problema: Merzbacher 18.11 Aplique teoria de perturbao em segunda ordem para o potencial peridico  

E-print Network

Problema: Merzbacher 18.11 Aplique teoria de perturbação em segunda ordem para o potencial no limite L as funções de onda não perturbadas são ondas planas. b) Mostre que a teoria de perturbação não fronteira da zona de Brillouin deste problema, região onde a teoria não-degenerada falha pois En = En+r N

de Aguiar, Marcus A. M.

350

Comparative study of projection/back-projection schemes in cryo-EM tomography  

NASA Astrophysics Data System (ADS)

In the cryo-EM tomography, the projection and back-projection are essential steps in reconstruction the 3D structure of the virus and macromolecules. Distance driven method (DD) is the latest projection /backprojection algorithm originally employed for x-ray computed tomography. This paper is mainly concerned about employing this algorithm to the cryo-EM tomography for reconstruction performance improvement. Existing algorithms used in cryo-EM are pixel-driven and ray driven projection/backprojection, etc. These methods are generally quite time consuming because of their high computational complexity. Furthermore, interpolation artifacts are usually noticeable when the sufficient view and detector samples are not available. The DD is originally proposed to overcome these drawbacks. The interpolation process in DD is done by calculating the overlap area between the detector and pixel boundaries. This procedure largely removes the interpolation artifacts, and reduces the computational complexity significantly. Furthermore, it guarantees that the projection and backprojection are adjoint to each other - a desired property to guarantee the convergence of the iterative reconstruction algorithm. However, unlike the x-ray computed tomography, the cryo-EM tomography problem generally has limited number of the projections, and projection angles are randomly distributed over 4pi steradian. Therefore, the conventional DD should be modified. Rather than computing the boundary overlap in the previous 3-D DD method, we propose a novel DD algorithm based on volume overlap. CCMV virus model is used as testing example. Results are visualized using AMIRA software. Analysis is made upon the advantages and drawbacks of both the existing approaches and distance driven method.

Liu, Yu; Ye, Jong Chul

2006-08-01

351

An EM algorithm and testing strategy for multiple-locus haplotypes  

Microsoft Academic Search

This paper gives an expectation maximization (EM) algorithm to obtain allele frequencies, haplotype frequencies, and gametic disequilibrium coefficients for multiple-locus systems. It permits high polymorphism and null alleles at all loci. This approach effectively deals with the primary estimation problems associated with such systems; that is, there is not a one-to-one correspondence between phenotypic and genotypic categories, and sample sizes

J. C. Long; R. C. Williams; M. Urbanek

1995-01-01

352

Surgical treatment for paediatric patients with moyamoya disease by indirect revascularization procedures (EDAS, EMS, EMAS)  

Microsoft Academic Search

Summary Surgical results of paediatric patients with Moyamoya disease who were treated by indirect revascularization procedures are reported. Encephalo-duro-arterio-synangiosis (EDAS), encephalomyo-arterio-synangiosis (EMAS), and\\/or encephalo-myo-synangiosis (EMS) were performed on 47 sides of 29 children with Moyamoya disease. The results of those non-anastomotic EC-IC bypass procedures were evaluated clinically, angiographically, and by computed tomography (CT). Postoperative external carotid angiograms showed a good

T. Matsushima; S. Fujiwara; S. Nagata; K. Fujii; M. Fukui; K. Kitamura; K. Hasuo

1989-01-01

353

Mtodo e loucura da teorizao em psicanlise: a busca de figurabilidade  

E-print Network

própria construção teórica? Trata-se de dar conta da postura discursiva na teoria analítica, abordando, método, discurso psicanalítico, metáfora. 1 Thamy Ayouch é Psicanalista, Maître de Conférence (Professor Psicologia Clínica, com ênfase em Psicanálise, Fenomenologia, Teoria Política, Teoria do Gênero. Endereço

354

Novas estratgias comunicativas como fator de qualidade na interao de surdos em um sistema organizacional  

E-print Network

122 Novas estratégias comunicativas como fator de qualidade na interação de surdos em um sistema formulário web e verificar se o uso de novas estratégias comunicativas melhora a interação dos surdos. Foram (MAC), uma com a interface original do sistema, e outra com o uso de novas estratégias comunicativas

Barbosa, Alberto

355

UFPR -DInf -Bacharelado em Cincia da Computao CI210 -Projetos Digitais e Microprocessadores  

E-print Network

valor de N. E : IB4 S : IBN d : IB3 circ : (IB4 ? IB3) IBN circ(E, S, d) S = E ? 2d , 2d {1, 4, 16. Qual a posição de E em S para d = 0 ? E : IB8 S : IBN d : IB3 m : IB circ : (IB ? IB8 ? IB3) IBN circ

Hexsel, Roberto A

356

EMS helicopter incidents reported to the NASA Aviation Safety Reporting System  

NASA Technical Reports Server (NTRS)

The objectives of this evaluation were to: Identify the types of safety-related incidents reported to the Aviation Safety Reporting System (ASRS) in Emergency Medical Service (EMS) helicopter operations; Describe the operational conditions surrounding these incidents, such as weather, airspace, flight phase, time of day; and Assess the contribution to these incidents of selected human factors considerations, such as communication, distraction, time pressure, workload, and flight/duty impact.

Connell, Linda J.; Reynard, William D.

1993-01-01

357

Monopolos e Curvas Algebricas -Curso de Mestrado em Matematica Aplicada -IST Jo~ao Pimentel Nunes  

E-print Network

quocientes hiperKahler; 10. Eq. de Korteg de Vries, eq. de Bogomolny, eq. de Hitchin, eq. de Nahm, aplicaMonop´olos e Curvas Alg´ebricas - Curso de Mestrado em Matem´atica Aplicada - IST Jo~ao Pimentel Nunes Sum´ario: A teoria de monop´olos magn´eticos e as t´ecnicas usadas para o seu estudo s~ao um

Lisboa, Universidade Técnica de

358

Application of Fuzzy Logic to EMS-type Magnetically Levitated Railway Vehicle  

NASA Astrophysics Data System (ADS)

A type of the magnetically levitated railway system with the electro-magnetic suspension system (EMS), which is named HSST system, will be put into revenue service as an urban transport in Nagoya, Japan at the beginning of April 2005. To extend its operational velocity higher than 200km/h for applications in other cities, the design of its EMS system is reexamined for improvement of riding comfort and performances of a train. In order to achieve these objectives, the multipurpose optimization on the basis of the genetic algorithm is applied for the design of EMS-type magnetically levitated vehicle, control parameters of which are optimized both to follow the rail exactly in high-speed and to provide enough riding comfort to passengers. However, the ability to follow sharp irregularities of the rail and to cope with high frequency noises in the gap length control system should be coordinated with riding comfort. The fuzzy logic is introduced into the dynamic control loop and verified to solve the problem. Far better coordination is obtained between the vehicle performances and riding comfort of passengers in high-speed against such various rail conditions. The levitation control with fuzzy logic is shown to be useful for the critical design problem as the high-speed maglev railways.

Kusagawa, Shinichi; Baba, Jumpei; Shutoh, Katsuhiko; Masada, Eisuke

359

A Theoretical Solution to MAP-EM Partial Volume Segmentation of Medical Images  

PubMed Central

Voxels near tissue borders in medical images contain useful clinical information, but are subject to severe partial volume (PV) effect, which is a major cause of imprecision in quantitative volumetric and texture analysis. When modeling each tissue type as a conditionally independent Gaussian distribution, the tissue mixture fractions in each voxel via the modeled unobservable random processes of the underlying tissue types can be estimated by maximum a posteriori expectation-maximization (MAP-EM) algorithm in an iterative manner. This paper presents, based on the assumption that PV effect could be fully described by a tissue mixture model, a theoretical solution to the MAP-EM segmentation algorithm, as opposed to our previous approximation which simplified the posteriori cost function as a quadratic term. It was found out that the theoretically-derived solution existed in a set of high-order non-linear equations. Despite of the induced computational complexity when seeking for optimum numerical solutions to non-linear equations, potential gains in robustness, consistency and quantitative precision were noticed. Results from both synthetic digital phantoms and real patient bladder magnetic resonance images were presented, demonstrating the accuracy and efficiency of the presented theoretical MAP-EM solution. PMID:19768123

Wang, Su; Lu, Hongyu; Liang, Zhengrong

2009-01-01

360

Developing a high-resolution x-ray imager using electron-multiplying (EM) CCDs  

NASA Astrophysics Data System (ADS)

Applications at synchrotron facilities such as macromolecular crystallography and high energy X-ray diffraction require high resolution imaging detectors with high dynamic range and large surface area. Current systems can be split into two main categories: hybrid pixel detectors and scintillator-coupled Charge-Coupled Devices (CCDs). Whilst both have limitations, CCD-based systems (coupled to fibre-optics to increase imaging area) are often used in these applications due to their small pixels and the high resolution. Electron-Multiplication CCDs (EM-CCDs) are able to suppress the readout noise associated with increased readout speed offering a low noise, high speed detector solution. A previous pilot study using a small-area (8 mm 8 mm) scintillator-coupled EM-CCD found that through high frame-rates, low noise and novel uses of photon-counting, resolution could be improved from over 80 ?m to 25 ?m at 2 fps. To further improve this detector system, high speed readout electronics can be used alongside a fibre-optic taper and EM-CCD to create a "best of both worlds" solution consisting of the high resolution of a CCD, along with the low noise, high speed (high dynamic range) and large effective area of pixel detectors. This paper details the developments in the study and discusses the latest results and their implication on the system design.

Tutt, James H.; Hall, David J.; Holland, Andrew D.; Murray, Neil J.; Endicott, James

2013-09-01

361

Application of EM38 and ERT methods in estimation of saturated hydraulic conductivity in unsaturated soil  

NASA Astrophysics Data System (ADS)

Soil apparent electrical conductivity is being considerably used as a surrogate measure for soil properties and hydraulic parameters. In this study, measurements of electrical conductivity were accomplished with electrical resistivity tomography (ERT) and EM38 to develop multiple datasets for defining spatiotemporal moisture content variations and estimating saturated hydraulic conductivity under natural conditions in an experimental site located in Lisbon, Portugal. In addition, EM38 capability in monitoring electrical conductivity variations in comparison with ERT method was examined. In order to achieve these objectives, appropriate relationships were derived based on determination of experimental curve resistivity vs. degree of saturation by in-situ investigation to convert electrical resistivity maps inferred from ERT and EM38 data to moisture content distribution maps. In addition, the surface temperature variations during the experiment were measured and the effects of the temperature variations were removed by assuming 2% change in electrical resistivity per C change in temperature. The conducted experiment proves that the soil is fairly homogenous and semi-pervious sediment and the spatiotemporal moisture content variations during the experiment barely exceed 10%. Our calculations constrain the range of saturated hydraulic conductivity to be 3-9 (cm/day) range.

Farzamian, Mohammad; Monteiro Santos, Fernando A.; Khalil, Mohamed A.

2015-01-01

362

Helicopter-borne measurements of sea ice thickness, using a small and lightweight, digital EM system  

NASA Astrophysics Data System (ADS)

Sea ice is an important climate variable and is also an obstacle for marine operations in polar regions. We have developed a small and lightweight, digitally operated frequency-domain electromagnetic-induction (EM) system, a so-called EM bird, dedicated for measurements of sea ice thickness. It is 3.5 m long and weighs only 105 kg, and can therefore easily be shipped to remote places and operated from icebreakers and small helicopters. Here, we describe the technical design of the bird operating at two frequencies of f1 = 3.68 kHz and f2 = 112 kHz, and study its technical performance. On average, noise amounts to 8.5 ppm and 17.5 ppm for f1 and f2, respectively. Electrical drift amounts to 200 ppm/h and 2000 ppm/h for f1 and f2, during the first 0.5 h of operation. It is reduced by 75% after 2 h. Calibration of the Inphase and Quadrature ppm signals varies by 2 to 3%. A sensitivity study shows that all these signal variations do affect the accuracy of the ice thickness retrieval, but that it remains better than 0.1 m over level ice in most cases. This accuracy is also confirmed by means of comparisons of the helicopter EM data with other thickness measurements. The paper also presents the ice thickness retrieval from single-component Inphase data of f1.

Haas, Christian; Lobach, John; Hendricks, Stefan; Rabenstein, Lasse; Pfaffling, Andreas

2009-03-01

363

Cryo-EM Imaging of DNA-PK DNA Damage Repair Complexes  

SciTech Connect

Exposure to low levels of ionizing radiation causes DNA double-strand breaks (DSBs) that must be repaired for cell survival. Higher eukaryotes respond to DSBs by arresting the cell cycle, presumably to repair the DNA lesions before cell division. In mammalian cells, the nonhomologous end-joining DSB repair pathway is mediated by the 470 kDa DNA-dependent protein kinase catalytic subunit (DNA-PKcs) together with the DNA-binding factors Ku70 and Ku80. Mouse knock-out models of these three proteins are all exquisitely sensitive to low doses of ionizing radiation. In the presence of DNA ends, Ku binds to the DNA and then recruits DNA-PKcs. After formation of the complex, the kinase activity associated with DNA-PKcs becomes activated. This kinase activity has been shown to be essential for repairing DNA DSBs in vivo since expression of a kinase-dead form of DNA-PKcs in a mammalian cell line that lacks DNA-PKcs fails to complement the radiosensitive phenotype. The immense size of DNA-PKcs suggests that it may also serve as a docking site for other DNA repair proteins. Since the assembly of the DNA-PK complex onto DNA is a prerequisite for DSB repair, it is critical to obtain structural information on the complex. Cryo-electron microscopy (cryo-EM) and single particle reconstruction methods provide a powerful way to image large macromolecular assemblies at near atomic (10-15 ?) resolution. We have already used cryo-EM methods to examine the structure of the isolated DNA-PKcs protein. This structure reveals numerous cavities throughout the protein that may allow passage of single or double-stranded DNA. Pseudo two-fold symmetry was found for the monomeric protein, suggesting that DNA-PKcs may interact with two DNA ends or two Ku heterodimers simultaneously. Here we propose to study the structure of the cross-linked DNA-PKcs/Ku/DNA complex. Difference imaging with our published DNA-PKcs structure will enable us to elucidate the architecture of the complex. A second objective is to locate the kinase domain of DNA-PKcs by determining the structure of a kinase deletion mutant both as an isolated protein and as part of a DNA-PKcs/Ku/DNA complex. A third objective is to pursue higher resolution studies of DNA-PKcs and the DNA-PKcs/Ku/DNA complex. If the crystal structure determination of DNA-PKcs is completed during the project period, the atomic coordinates of DNA-PKcs will be modeled within the cryo-EM structure of the complex. In order to achieve these goals, a collaborative effort is proposed between Dr. Phoebe Stewart at UCLA, whose laboratory has expertise in cryo-EM reconstruction methods, and Dr. David Chen at the Lawrence Berkeley National Laboratory, who has a long-standing interest in DNA repair. Advantages of the cryo-EM structural method include the fact that the sample is imaged in a frozen-hydrated and unstained state, avoiding artifacts associated with drying and staining in other EM approaches. Also crystals of the sample are not needed for the single particle reconstruction method and only microgram quantities of sample are required. Cryo-EM structural information of macromolecular assemblies is complementary to both atomic structures of individual component molecules, as well as low resolution information obtained from x-ray and neutron scattering. Knowledge of the geometrical arrangement of the complex, and the position of the essential DNA-PKcs kinase domain, should lead to a greater understanding of the molecular events in DNA double-strand break repair following exposure to low doses of radiation.

Phoebe L. Stewart

2005-06-27

364

Influence of small-scale EM and HM on the growth of large-scale magnetic field  

NASA Astrophysics Data System (ADS)

We investigated the influence of small-scale magnetic energy (EM) and magnetic helicity (HM) on the growth rate (?) of overline{B} field (large-scale magnetic field). HM that plays a key role in magnetohydrodynamic (MHD) dynamo is a topological concept describing the structural properties of magnetic fields. Since EM is a prerequisite of HM, it is not easy to differentiate the intrinsic properties of HM from the influence of EM. However, to understand MHD dynamo, the features of helical and non-helical magnetic field should be made clear. For this, we made a detour: we gave each simulation set its own initial condition (IC, same EM(0) and specific HM(0) at the forced wavenumber kf = 5), and then drove the system with positive helical kinetic energy(kf = 5). According to the simulation results, EM(0), whether or not helical, increases the growth rate of overline{B}. The positive HM(0) boosts the increased growth rate, but the negative HM(0) decreases it. To explain these results, two coupled equations of HM and EM were derived and solved using a simple approximate method. The equations imply that helical magnetic field evolves into the total (helical and non-helical) magnetic field but quenches itself. Non-helical magnetic field also evolves into the total magnetic field but quenches itself. The initially given EM(0) modifies the electromotive force (EMF, < u b rangle) and generates new terms. The effects of these terms depend on the magnetic diffusivity ?, position of initial conditions kf, and magnetic diffusion time. But the influence disappears exponentially as time passes, so the saturated magnetic fields are eventually independent of the pre-existing initial conditions.

Park, Kiwan

2014-11-01

365

Dinmica populacional de Melanoides tuberculatus (Mller, 1774) em um riacho impactado da Vila do Abrao, Ilha Grande, Angra dos Reis, RJ, Brasil.  

E-print Network

??Melanoides tuberculatus (Mller, 1774) um gastrpode dulceaqucola de origem afroasitica, atualmente com uma distribuio cosmopolita, devido a seu comportamento invasivo. Utilizamos em nosso trabalho (more)

Igor Christo Miyahira

2010-01-01

366

Projeto educao em cincias com observatrios virtuais: a participao da Escola Moppe no perodo 2000-2003  

NASA Astrophysics Data System (ADS)

O projeto Educao em Cincias com Observatrios Virtuais foi concebido pelo Instituto Astronmico e Geofsico da USP, agregando diversas instituies de ensino e pesquisa no pas para desenvolver competncias diversas na educao fundamental, mdia e superior utilizando a astronomia como ferramenta multidisciplinar. Este trabalho descreve a participao da MOPPE, escola-piloto do INPE no projeto, no perodo de 2000-2003. Sero apresentadas 1) a criao de um clube de cincias (1999 a 2001) cujo tema foi a colonizao de Marte e 2) a ementa de astronomia trabalhada com as 7a. e 8a. sries do ensino fundamental. A proposta do projeto Colonizando Marte foi estudar diversos aspectos de uma misso interplanetria e construir experiementos que permitissem quantificar esses aspectos. Os resultados obtidos incluiram apresentaes nas SBPC Jovem em 2000 e 2001. Discutiremos tambm as ementas de astronomia trabalhadas desde 2001 e o envolvimento dos alunos com atividades ligadas a astronomia, fora da aula de cincias. A incluso de astronomia no currculo das ltimas sries motivou a participao de mais alunos culminando com a conquista de duas medalhas para alunos da 7a. srie na Olimpiada Brasileira de Astronomia em 2002. Houve tambm um aumento no nmero de participantes na OBA 2003 e nos projetos de astronomia mais elaborados nas Feira de Cincias de 2001 e 2002. Destacamos em 2003 a incluso da MOPPE no projeto TIE - Telescopes in Education - da NASA, que utiliza o telescpio do Observatrio de Mount Wilson (EUA) para observaes remotas em projetos pedaggicos para o ensino de astronomia.

Wuensche, C. A.; Gavioli, E.; Oliveira, A. L. P. R. S.; da Silva, C.; Cardoso, H. P.; Estcio, S.

2003-08-01

367

Theory and detection scheme of seismic EM signals transferred into the atmosphere from the oceanic and continental lithosphere  

NASA Astrophysics Data System (ADS)

Due to the compound structure of the medium and large portions of energy transferred, a seismic excitation in the oceanic or continental lithosphere disturbs all types of geophysical fields. To investigate the problem of electromagnetic (EM) disturbances in the atmosphere from the seismically activated lithosphere, we have formulated two mathematical models of interaction of fields of different physical nature resulting in arising of the low-frequency (from 0.1 to 10 Hz by amplitude of a few hundreds of pT) EM signals in the atmosphere. First we have considered the EM field generation in the moving oceanic lithosphere and then in the moving continental one. For both cases, the main physical principles and geological data were applied for formulation of the model and characteristics of the computed signals of different nature agree with measurements of other authors. On the basis of the 2D model of the seismo-hydro-EM-temperature interaction in the lithosphere-Ocean-atmosphere domain, a block-scheme of a multisensory vertically distributed (from a seafloor up to the ionosphere) tsunami precursors' detection system is described. On the basis of the 3D model of the seismo-EM interaction in a lithosphere-atmosphere domain, we explain why Prof. Kopytenko (Inst. IZMIRAN of Russian Acad. Sci.) and co-authors were able to estimate location of the future seismic epicenter area from their magnetic field measurements in the atmosphere near the earth's surface.

Novik, Oleg; Ershov, Sergey; Ruzhin, Yuri; Smirnov, Fedor; Volgin, Maxim

2014-07-01

368

Detecting leachate plumes and groundwater pollution at Ruseifa municipal landfill utilizing VLF-EM method  

NASA Astrophysics Data System (ADS)

A Very Low Frequency-Electromagnetic (VLF-EM) survey was carried out in two sites of domestic waste of old and recent landfills. The landfill structures lie on a major highly fractured limestone aquifer of shallow groundwater less than 30 m, which is considered as the main source of fresh water in Amman-Zarqa region. A total of 18 VLF-EM profiles were conducted with length ranges between 250 and 1500 m. Hydrochemical and biochemical analysis of water samples, taken from wells in the region, has also been conducted. The integrated results of previous DC resistivity method of the same study area and the outcomes of the 2-D tipper inversion of VLF-EM data proved the efficiency of this method in locating shallow and deep leachate plume with resistivity less than 20 ? m, and enabling the mapping of anomalous bodies and their extensions down to 40 m depth. The sign of groundwater contamination was noticed in many surrounding wells resulting in the high number of fecal coliform bacteria and total coliform bacteria and the increase in inorganic parameters such as chloride (Cl). The pollution of groundwater wells in the landfill area is attributed to the leachate bodies which flow through the upper part of Wadi Es Sir (A7) or Amman-Wadi Es Sir Aquifer (B2/A7). Furthermore, several structural features were detected and the direction of local groundwater movement has been determined. The structural features have been found to have critical effects on the flowing of leachate plume towards north-northeast and west-southwest of the potable aquifer in the area.

Al-Tarazi, E.; Abu Rajab, J.; Al-Naqa, A.; El-Waheidi, M.

2008-09-01

369

The ISO 14001 EMS implementation process and its implications: A case study of Central Japan  

SciTech Connect

This study aims to investigate the ISO 14001 implementation process and its implications for regional environmental management. The region of Central Japan was chosen for this case study. The study focuses on selected issues such as the: (1) trends and motives of private firms in the implementation of an ISO 14001-based environmental management system (EMS); (2) obstacles during system implementation; (3) role of the system in enhancing environmental performance within the certified organization; and (4) relation between the major stakeholders, local citizens, governments, and firms after adopting the system. To achieve these objectives, a questionnaire survey was mailed to all certified firms in the region. A 58% response was achieved overall. The results show that the main aims behind the adoption of ISO 14001 by firms in the Bhubu region are to improve the environmental aspects within the enterprises and to enhance the employees' environmental awareness and capacity. The results have also shown that the ISO 14001-based EMS has had a great effect on a firm's environmental status as certified firms have claimed that natural resources such as fuel, water, and paper consumption have been more efficiently managed after adopting the system. Implementation of the system causes the firms to consider the role of the local people and the government in more effectively involving the local people in the firm's daily environmental awareness among the local people. Adopting the system also promotes a better relation within the enterprises affiliated to the same group, such as more attention given by the parent firms towards other firms working for the same group, or branches--mainly small and medium sized enterprises--in the field of EMS. Finally, the results show that firms give serious consideration to their final products' impacts on the environment. In other words, attention is given to life cycle analysis (LCA) among certified firms.

Mohammed, Matouq

2000-02-01

370

Advanced Metering Plan for Monitoring Energy and Potable Water Use in PNNL EMS4 Buildings  

SciTech Connect

This updated Advanced Metering Plan for monitoring whole building energy use in Pacific Northwest National Laboratory (PNNL) EMS4 buildings on the PNNL campus has been prepared in accordance with the requirements of the Energy Policy Act of 2005 (EPAct 2005), Section 103, U.S. Department of Energy (DOE) Order 430.2B, and Metering Best Practices, A Guide to Achieving Utility Resource Efficiency, Federal Energy Management Program, October 2007 (Sullivan et al. 2007). The initial PNNL plan was developed in July 2007 (Olson 2007), updated in September 2008 (Olson et al. 2008), updated in September 2009 (Olson et al. 2009), and updated again in August 2010 (Olson et al. 2010).

Pope, Jason E.; Olson, Norman J.; Berman, Marc J.; Schielke, Dale R.

2011-08-17

371

Computer science. Heads-up limit hold'em poker is solved.  

PubMed

Poker is a family of games that exhibit imperfect information, where players do not have full knowledge of past events. Whereas many perfect-information games have been solved (e.g., Connect Four and checkers), no nontrivial imperfect-information game played competitively by humans has previously been solved. Here, we announce that heads-up limit Texas hold'em is now essentially weakly solved. Furthermore, this computation formally proves the common wisdom that the dealer in the game holds a substantial advantage. This result was enabled by a new algorithm, CFR(+), which is capable of solving extensive-form games orders of magnitude larger than previously possible. PMID:25574016

Bowling, Michael; Burch, Neil; Johanson, Michael; Tammelin, Oskari

2015-01-01

372

A penalized EM algorithm incorporating missing data mechanism for Gaussian parameter estimation  

PubMed Central

Summary Missing data rates could depend on the targeted values in many settings, including mass spectrometry-based proteomic profiling studies. Here we consider mean and covariance estimation under a multivariate Gaussian distribution with non-ignorable missingness, including scenarios in which the dimension (p) of the response vector is equal to or greater than the number (n) of independent observations. A parameter estimation procedure is developed by maximizing a class of penalized likelihood functions that entails explicit modeling of missing data probabilities. The performance of the resulting penalized EM algorithm incorporating missing data mechanism (PEMM) estimation procedure is evaluated in simulation studies and in a proteomic data illustration. PMID:24471933

Chen, Lin S.; Prentice, Ross L.; Wang, Pei

2014-01-01

373

Wave Chaos and Coupling to EM Structures Students: Sameer Hemmady, James Hart,  

E-print Network

1 Wave Chaos and Coupling to EM Structures Students: Sameer Hemmady, James Hart, Xing Zheng (George of Increasing Loss High LossLow Loss Intermediate Loss 0 1 2 3 0 1 2 k 2 /(Q) = 7.6 k 2 /(Q) = 4.2 k 2 /(Q) = 0.8 -2 -1 0 1 2 0 1 2 k 2 /(Q) = 0.8 k 2 /(Q) = 4.2 k 2 /(Q) = 7.6 = Re Z( ) /RR = (Im Z( )- XR) /RR

Anlage, Steven

374

Combining EMS-Vision and Horopter Stereo for Obstacle Avoidance of Autonomous Vehicles  

Microsoft Academic Search

A novel perception system for autonomous navigation on low level roads and open terrain is presented. Built within the framework\\u000a of the US-German AutoNav project, it combines UBMs object oriented techniques, known as the 4D approach to machine perception\\u000a (EMS-Vision), with Sarnoffs hierarchical stereo processing.\\u000a \\u000a The Vision Front End 200, a specially designed hardware device for real-time image processing, computes

K.-H. Siedersberger; Martin Pellkofer; Michael Ltzeler; Ernst D. Dickmanns; Andr Rieder; Robert Mandelbaum; Luca Bogoni

2001-01-01

375

SEI: Junior E&M I Course Materials - Electric Fields in Matter  

NSDL National Science Digital Library

This is a collection of resources for teaching electrostatics in matter, including polarization and the electric displacement, constructed over the course of four semesters of a transformed junior-level Electricity and Magnetism course. Included are homework questions, concept tests, student tutorials, lecture notes, and information about common student difficulties in the topic and ways to address these difficulties. This material was developed as part of a education research-based course transformation for junior level E&M. All of the resources developed for this course are available, sorted by individual topic and type, at http://www.compadre.org/psrc/items/Relations.cfm?ID=7891.

Pollock, Steven J.; Chasteen, Stephanie V.

2010-06-29

376

The Case for a Misaligned Relativistic Jet from SN 2001em  

E-print Network

SN 2001em, identified as a Type Ic supernova, has recently been detected in the radio and X-rays, $\\gtrsim$ 2 yr after the explosion. The high luminosities at such late times might arise from a relativistic jet viewed substantially off-axis that becomes visible only when it turns mildly relativistic and its emission is no longer strongly beamed away from us. Alternatively, the emission might originate from the interaction of the SN shell with the circumstellar medium. We find that the latter scenario is hard to reconcile with the observed rapid rise in the radio flux and optically thin spectrum, $F_\

Jonathan Granot; Enrico Ramirez-Ruiz

2004-05-03

377

Correlao de longo alcance em sistemas binrios de raios-x usando remoo de flutuaes  

NASA Astrophysics Data System (ADS)

Neste trabalho proposta uma metodologia de analise de series temporais de fontes astrofsicas, baseada no mtodo proposto por Peng et al. (1994) e Liu et al. (1999), o qual consiste na idia de que uma srie temporal correlacionada pode ser mapeada por um processo de busca de auto-similaridades em diversas escalas de tempo n. Removendo as eventuais tendncias e integrando o sinal observado, obtida uma medida do desvio mdio quadrtico das flutuaes do sinal integrado F(n)~na, onde a representa o fator de escala associado com a auto-similaridade da correlao de longo alcance do sinal. Baseado nos valores obtidos de a, possvel distinguir entre os casos de sinais no-correlacionados, tipo rudo branco (a = 0,5), sinal anti-persistentes (a < 0,5) e sinal persistente (a > 0,5). Usando esta metodologia, foram analisadas 129 curvas de luz de sistemas binrios de raios-X, provenientes do banco de dados pblicos de observaes feitas pelo instrumento All Sky Monitor, a bordo do satlite Rossi X-Ray Timing Explorer (ASM-RXTE). Foram identificadas a presena de a'0,5 em mais de 90% dos sistemas estudados, implicando em dizer que as flutuaes de intensidade observadas apresentam correlao de auto-similaridade, sem entretanto, indcios de apresentarem uma escala de tempo caracterstica das flutuaes de intensidade. Sistemas onde so observadas erupes (flares), apresentam sistematicamente a > 0,5, caracterstica esta, possivelmente associada com persistncia das flutuaes de densidade de disco ou taxa de acrscimo de massa. Os sistemas com curvas de luz onde nao so observadas as erupes apresentam uma distribuio normal centrada em a~0,62+/-0,10. Referncias Peng, C.-K., Buldyrev, S.V., Havlin, S., Simons, M., Stanley, H.E., e Goldberg, A.L., Phys. Rev. E, (49), 1685 (1994). Liu, Y., Gopikrishnan, P., Cizeau, P., Meyer, M., Peng,C.-K., e Stanley, H.E., Phys. Rev. E, (60), 1390 (1999).

Pereira, M. G.; Moret, M. A.; Zebende, G. F.; Nogueira, E., Jr.

2003-08-01

378

Degradation of Microcystin-LR and RR by a Stenotrophomonas sp. Strain EMS Isolated from Lake Taihu, China  

PubMed Central

A bacterial strain EMS with the capability of degrading microcystins (MCs) was isolated from Lake Taihu, China. The bacterium was tentatively identified as a Stenotrophomonas sp. The bacterium could completely consume MC-LR and MC-RR within 24 hours at a concentration of 0.7 ?g/mL and 1.7 ?g/mL, respectively. The degradation of MC-LR and MC-RR by EMS occurred preferentially in an alkaline environment. In addition, mlrA gene involved in the degradation of MC-LR and MC-RR was detected in EMS. Due to the limited literature this gene has rare homologues. Sequencing analysis of the translated protein from mlrA suggested that MlrA might be a transmembrane protein, which suggests a possible new protease family having unique function. PMID:20479990

Chen, Jian; Hu, Liang Bin; Zhou, Wei; Yan, Shao Hua; Yang, Jing Dong; Xue, Yan Feng; Shi, Zhi Qi

2010-01-01

379

Regularized EM algorithm for sparse parameter estimation in nonlinear dynamic systems with application to gene regulatory network inference  

PubMed Central

Parameter estimation in dynamic systems finds applications in various disciplines, including system biology. The well-known expectation-maximization (EM) algorithm is a popular method and has been widely used to solve system identification and parameter estimation problems. However, the conventional EM algorithm cannot exploit the sparsity. On the other hand, in gene regulatory network inference problems, the parameters to be estimated often exhibit sparse structure. In this paper, a regularized expectation-maximization (rEM) algorithm for sparse parameter estimation in nonlinear dynamic systems is proposed that is based on the maximum a posteriori (MAP) estimation and can incorporate the sparse prior. The expectation step involves the forward Gaussian approximation filtering and the backward Gaussian approximation smoothing. The maximization step employs a re-weighted iterative thresholding method. The proposed algorithm is then applied to gene regulatory network inference. Results based on both synthetic and real data show the effectiveness of the proposed algorithm. PMID:24708632

2014-01-01

380

Regularized EM algorithm for sparse parameter estimation in nonlinear dynamic systems with application to gene regulatory network inference.  

PubMed

Parameter estimation in dynamic systems finds applications in various disciplines, including system biology. The well-known expectation-maximization (EM) algorithm is a popular method and has been widely used to solve system identification and parameter estimation problems. However, the conventional EM algorithm cannot exploit the sparsity. On the other hand, in gene regulatory network inference problems, the parameters to be estimated often exhibit sparse structure. In this paper, a regularized expectation-maximization (rEM) algorithm for sparse parameter estimation in nonlinear dynamic systems is proposed that is based on the maximum a posteriori (MAP) estimation and can incorporate the sparse prior. The expectation step involves the forward Gaussian approximation filtering and the backward Gaussian approximation smoothing. The maximization step employs a re-weighted iterative thresholding method. The proposed algorithm is then applied to gene regulatory network inference. Results based on both synthetic and real data show the effectiveness of the proposed algorithm. PMID:24708632

Jia, Bin; Wang, Xiaodong

2014-01-01

381

XII Escola de Modelos de Regress~ao, Fortaleza-CE, 13-16 Marco 2011 Atribuic ~ao de Trafego em Redes de Filas Finitas Dependentes do Estado  

E-print Network

Redes de Filas Finitas Dependentes do Estado Guilherme D. Carvalho, Renato A. Nascimento & Frederico R´iculos, baseado em filas finitas configuradas em redes, acoplado ao modelo do ´otimo do sistema, que ´e um dos tr´afego faz sentido e ´e robusta. Palavras-chave: Redes de filas, filas finitas, sistemas estoc

Cruz, Frederico

382

Using an EM Covariance Matrix to Estimate Structural Equation Models with Missing Data: Choosing an Adjusted Sample Size to Improve the Accuracy of Inferences  

ERIC Educational Resources Information Center

Two methods, direct maximum likelihood (ML) and the expectation maximization (EM) algorithm, can be used to obtain ML parameter estimates for structural equation models with missing data (MD). Although the 2 methods frequently produce identical parameter estimates, it may be easier to satisfy missing at random assumptions using EM. However, no

Enders, Craig K.; Peugh, James L.

2004-01-01

383

Accelerated EM-based clustering of large data sets Jakob J. Verbeek (j.j.verbeek@uva.nl) , Jan R.J. Nunnink  

E-print Network

Accelerated EM-based clustering of large data sets Jakob J. Verbeek (j.j.verbeek@uva.nl) , Jan R by the poor performance (linear complexity) of the EM algorithm in clustering large data sets, and inspired energy, kd-trees, large data sets. 1. Introduction Mixture models provide a rigorous framework

Paris-Sud XI, Université de

384

Dinmica dos usos e coberturas da terra em rea de Preservao Permanente na Bacia Hidrogrfica dos Rios Mogi Guau e Pardo, no perodo entre 1988 e 2002  

Microsoft Academic Search

O objetivo deste trabalho foi estudar a dinmica de uso e ocupao da terra em reas de Preservao Permanente APPs - na Bacia Hidrogrfica dos Rios Mogi Guau e Pardo, estado de So Paulo, de modo a subsidiar a formulao de polticas pblicas. As APPs foram identificadas e mapeadas usando imagens do Landsat-7. O uso antrpico em reas de

Luis Alberto Ambrosio; Maria Do Carmo Ramos Fasiaben; Jener Fernando Leite De Moraes

2008-01-01

385

C OMUNIDADES LENHOSAS NO CERRADO SENTIDO RESTRITO EM DUAS POSIES TOPOGRFICAS NA ESTAO ECOLGICA DO JARDIM BOTNICO DE BRASLIA, DF, BRASIL  

Microsoft Academic Search

2 CNPq - Bolsa, Pesquisador II. RESUMO (Comunidades lenhosas no cerrado sentido restrito em duas posies topogrficas na EEJBB, DF, Brasil) A topografia afeta o regime hdrico e propriedades edficas determinantes da vegetao do cerrado. Este estudo avaliou a distribuio espacial de rvores do cerrado sensu stricto em duas posies topogrficas, interflvio (I) e vale (V) na Estao Ecolgica do

Manoel Cludio; Silva Jnior; Thaise Rachel Sarmento

2009-01-01

386

Abordagem do tema hipertenso arterial e suas relaes com o tabagismo e a obesidade como forma de avaliao da aquisio e socializao de conhecimentos em Feiras de Cincias  

Microsoft Academic Search

O presente trabalho apresenta a experincia vivenciada por um professor do Ensino Fundamental de Escola Pblica do Paran, na orientao de uma equipe de alunos de 8 srie, em 2008, visando o desenvolvimento de trabalhos em Feiras de Cincias. A temtica da equipe enfoca a hipertenso arterial e seus fatores de risco, tabagismo e obesidade, no municpio de Floresta. Escolheu-se

Eduardo de Almeida Grenier; Celso Ivam Conegero

2008-01-01

387

Bactrias da famlia Enterobacteriaceae em Alphitobius diaperinus oriundos de granjas avcolas dos Estados do Rio Grande do Sul e Santa Catarina, Brasil  

Microsoft Academic Search

O cascudinho (Alphitobius diaperinus) um inseto considerado como uma das maiores pragas da indstria avcola no Brasil e em diversos pases no mundo. A presena dele nos avirios gera diversos transtornos, pois sua ingesto pelas aves, prejudica o ganho de peso e tambm podem albergar e disseminar entre as aves diversos patgenos. Coletaram-se cascudinhos em seis empresas avcolas dos

Stefanie Dickel Segabinazi; Maristela Lovato Flres; Alverson da Silva Barcelos; Gislaine Jacobsen; Rosngela Dariva Eltz

388

Programa de Ps-Graduao em Engenharia de Transportes e Gesto Territorial PPGTG PPGTG -Gesto Carlos Loch  

E-print Network

modelo padrão (modelo 2); Uma foto 3x4 recente; Cópia do CPF e do RG; #12;Programa de Pós-Graduação em Educação e/ou pelo Ministério de Relações Exteriores do Brasil; e Os modelos 1, 2 e 3 acima poderão ser Catarina / Brasil #12;Programa de Pós-Graduação em Engenharia de Transportes e Gestão Territorial ­ PPGTG

Floeter, Sergio Ricardo

389

Padries alomtricos em espcies arbreas pioneiras tropicais Allometric patterns for tropical pioneer tree species  

Microsoft Academic Search

RESUMO: Neste estudo, foi investigada a existncia de padries alomtricos em cinco espci- es arbreas pioneiras tropicais, que refletem suas caractersticas de crescimento e estratgias de ocupao. As espcies estudadas, Cecropia glazioui, Miconia cinnamomifolia, Schefflera morototoni, Miconia splendens e Vismia guianensis, localizam-se em vegetao secundria de mata atlntica, na Reserva Florestal de Linhares, norte do Estado do Esprito Santo, Brasil.

Marco Aurlio; Leite Fontes

390

STATegra EMS: an Experiment Management System for complex next-generation omics experiments.  

PubMed

High-throughput sequencing assays are now routinely used to study different aspects of genome organization. As decreasing costs and widespread availability of sequencing enable more laboratories to use sequencing assays in their research projects, the number of samples and replicates in these experiments can quickly grow to several dozens of samples and thus require standardized annotation, storage and management of preprocessing steps. As a part of the STATegra project, we have developed an Experiment Management System (EMS) for high throughput omics data that supports different types of sequencing-based assays such as RNA-seq, ChIP-seq, Methyl-seq, etc, as well as proteomics and metabolomics data. The STATegra EMS provides metadata annotation of experimental design, samples and processing pipelines, as well as storage of different types of data files, from raw data to ready-to-use measurements. The system has been developed to provide research laboratories with a freely-available, integrated system that offers a simple and effective way for experiment annotation and tracking of analysis procedures. PMID:25033091

Hernndez-de-Diego, Rafael; Boix-Chova, Noemi; Gmez-Cabrero, David; Tegner, Jesper; Abugessaisa, Imad; Conesa, Ana

2014-01-01

391

STATegra EMS: an Experiment Management System for complex next-generation omics experiments  

PubMed Central

High-throughput sequencing assays are now routinely used to study different aspects of genome organization. As decreasing costs and widespread availability of sequencing enable more laboratories to use sequencing assays in their research projects, the number of samples and replicates in these experiments can quickly grow to several dozens of samples and thus require standardized annotation, storage and management of preprocessing steps. As a part of the STATegra project, we have developed an Experiment Management System (EMS) for high throughput omics data that supports different types of sequencing-based assays such as RNA-seq, ChIP-seq, Methyl-seq, etc, as well as proteomics and metabolomics data. The STATegra EMS provides metadata annotation of experimental design, samples and processing pipelines, as well as storage of different types of data files, from raw data to ready-to-use measurements. The system has been developed to provide research laboratories with a freely-available, integrated system that offers a simple and effective way for experiment annotation and tracking of analysis procedures. PMID:25033091

2014-01-01

392

Comparison of EM-based and level set partial volume segmentations of MR brain images  

NASA Astrophysics Data System (ADS)

EM and level set algorithms are competing methods for segmenting MRI brain images. This paper presents a fair comparison of the two techniques using the Montreal Neurological Institute's software phantom. There are many flavors of level set algorithms for segmentation into multiple regions (multi-phase algorithms, multi-layer algorithms). The specific algorithm evaluated by us is a variant of the multi-layer level set algorithm. It uses a single level set function for segmenting the image into multiple classes and can be run to completion without restarting. The EM-based algorithm is standard. Both algorithms have the capacity to model a variable number of partial volume classes as well as image inhomogeneity (bias field). Our evaluation consists of systematically changing the number of partial volume classes, additive image noise, and regularization parameters. The results suggest that the performances of both algorithms are comparable across noise, number of partial volume classes, and regularization. The segmentation errors of both algorithms are around 5 - 10% for cerebrospinal fluid, gray and white matter. The level set algorithm appears to have a slight advantage for gray matter segmentation. This may be beneficial in studying certain brain diseases (Multiple Sclerosis or Alzheimer's disease) where small changes in gray matter volume are significant.

Tagare, Hemant D.; Chen, Yunmei; Fulbright, Robert K.

2008-03-01

393

Type IIP supernovae as cosmological probes: A SEAM distance to SN1999em  

SciTech Connect

Because of their intrinsic brightness, supernovae make excellent cosmological probes. We describe the spectral-fitting expanding atmosphere method (SEAM) for obtaining distances to Type IIP supernovae (SNe IIP) and present a distance to SN 1999em for which a Cepheid distance exists. Our models give results consistent with the Cepheid distance, even though we have not attempted to tune the underlying hydrodynamical model but have simply chosen the best fits. This is in contradistinction to the expanding photosphere method (EPM), which yields a distance to SN 1999em that is 50 percent smaller than the Cepheid distance. We emphasize the differences between the SEAM and the EPM. We show that the dilution factors used in the EPM analysis were systematically too small at later epochs. We also show that the EPM blackbody assumption is suspect. Since SNe IIP are visible to redshifts as high as z {approx}< 6, with the James Webb Space Telescope, the SEAM may be a valuable probe of the early universe.

Baron, E.; Nugent, Peter E.; Branch, David; Hauschildt, Peter H.

2004-06-01

394

A blind deconvolution approach for improving the resolution of cryo-EM density maps.  

PubMed

Cryo-electron microscopy (cryo-EM) plays an increasingly prominent role in structure elucidation of macromolecular assemblies. Advances in experimental instrumentation and computational power have spawned numerous cryo-EM studies of large biomolecular complexes resulting in the reconstruction of three-dimensional density maps at intermediate and low resolution. In this resolution range, identification and interpretation of structural elements and modeling of biomolecular structure with atomic detail becomes problematic. In this article, we present a novel algorithm that enhances the resolution of intermediate- and low-resolution density maps. Our underlying assumption is to model the low-resolution density map as a blurred and possibly noise-corrupted version of an unknown high-resolution map that we seek to recover by deconvolution. By exploiting the nonnegativity of both the high-resolution map and blur kernel, we derive multiplicative updates reminiscent of those used in nonnegative matrix factorization. Our framework allows for easy incorporation of additional prior knowledge such as smoothness and sparseness, on both the sharpened density map and the blur kernel. A probabilistic formulation enables us to derive updates for the hyperparameters; therefore, our approach has no parameter that needs adjustment. We apply the algorithm to simulated three-dimensional electron microscopic data. We show that our method provides better resolved density maps when compared with B-factor sharpening, especially in the presence of noise. Moreover, our method can use additional information provided by homologous structures, which helps to improve the resolution even further. PMID:21385038

Hirsch, Michael; Schlkopf, Bernhard; Habeck, Michael

2011-03-01

395

Beam-induced motion correction for sub-megadalton cryo-EM particles.  

PubMed

In electron cryo-microscopy (cryo-EM), the electron beam that is used for imaging also causes the sample to move. This motion blurs the images and limits the resolution attainable by single-particle analysis. In a previous Research article (Bai et al., 2013) we showed that correcting for this motion by processing movies from fast direct-electron detectors allowed structure determination to near-atomic resolution from 35,000 ribosome particles. In this Research advance article, we show that an improved movie processing algorithm is applicable to a much wider range of specimens. The new algorithm estimates straight movement tracks by considering multiple particles that are close to each other in the field of view, and models the fall-off of high-resolution information content by radiation damage in a dose-dependent manner. Application of the new algorithm to four data sets illustrates its potential for significantly improving cryo-EM structures, even for particles that are smaller than 200 kDa. PMID:25122622

Scheres, Sjors Hw

2014-01-01

396

3D anisotropic modeling for airborne EM systems using finite-difference method  

NASA Astrophysics Data System (ADS)

Most current airborne EM data interpretations assume an isotropic model, which is sometimes inappropriate, especially in regions with distinct dipping anisotropy due to strong layering and stratifications. In this paper, we investigate airborne EM modeling and interpretation for a 3D earth with arbitrarily electrical anisotropy. We implement the staggered finite-difference algorithm to solve the coupled partial differential equations for the scattered electrical fields. Whereas the current density that is connected to the diagonal elements of the anisotropic conductivity tensor is discretized by using the volume weighted average, the current density that is connected to the non-diagonal elements is discretized by using the volume current density average. Further, we apply a divergence correction technique designed specifically for 3D anisotropic models to speed up the modeling process. For numerical experiments, we take both VMD and HMD transmitting dipoles for two typical anisotropic cases: 1) anisotropic anomalous inhomogeneities embedded in an isotropic half-space; and 2) isotropic anomalous inhomogeneities embedded in an anisotropic host rock. Model experiments show that our algorithm has high calculation accuracy, the divergence correction technique used in the modeling can greatly improve the convergence of the solutions, accelerating the calculation speed up to 2 times for the model presented in the paper. The characteristics inside the anisotropic earth, like the location of the anomalous body and the principal axis orientations, can also be clearly identified from AEM area surveys.

Liu, Yunhe; Yin, Changchun

2014-10-01

397

Beam-induced motion correction for sub-megadalton cryo-EM particles  

PubMed Central

In electron cryo-microscopy (cryo-EM), the electron beam that is used for imaging also causes the sample to move. This motion blurs the images and limits the resolution attainable by single-particle analysis. In a previous Research article (Bai et al., 2013) we showed that correcting for this motion by processing movies from fast direct-electron detectors allowed structure determination to near-atomic resolution from 35,000 ribosome particles. In this Research advance article, we show that an improved movie processing algorithm is applicable to a much wider range of specimens. The new algorithm estimates straight movement tracks by considering multiple particles that are close to each other in the field of view, and models the fall-off of high-resolution information content by radiation damage in a dose-dependent manner. Application of the new algorithm to four data sets illustrates its potential for significantly improving cryo-EM structures, even for particles that are smaller than 200 kDa. DOI: http://dx.doi.org/10.7554/eLife.03665.001 PMID:25122622

Scheres, Sjors HW

2014-01-01

398

Uma Comparao entre Tcnicas de Propagao de Erros em Astrofsica: Monte Carlo x Bootstrap  

NASA Astrophysics Data System (ADS)

Neste trabalho feito um estudo comparativo entre dois algoritmos numricos usados para propagao de erros em dados experimentais. Um deles conhecido por Mtodo de Monte carlo e o outro por Mtodo de Bootstrap. Recentemente, Dhullon & Watson argiram que a aplicao do mtodo de Monte Carlo introduz rudo nos dados, e propuseram ento a utilizao do Bootstrap como alternativa capaz de produzir resultados superiores. O objetivo deste trabalho testar a validade dessa afirmao. As duas tcnicas foram aplicadas a trs problemas diferentes: o ajsute de modelos de emisso LTE simples e atmosfera estelar a espectros estelares observados e o ajuste de curvas de luz de eclipses de Variveis Cataclsmicas para a detemrinao da distribuio radial de brilho dos seus discos de acrscimo. Os mtodos foram testados quanto sua robusteza, ou seja, a capacidade de prover resultados coerentes enre si. Alm disso, as solues dos mtodos foram comparadas. Os resultados indicam que no existe evidncia de superioridade de um mtodos em relao ao outro.

Zabot, Alexandre; Baptista, Raymundo

2005-07-01

399

Analytical prediction of EM scattering by complex obstacles within electrically large open cavities  

NASA Technical Reports Server (NTRS)

An analytical technique is described for predicting the electromagnetic (EM) scattering by complex obstacles within electrically large open waveguide cavities. This topic is of relevance to EM scattering and EMC type applications. A general open ended waveguide cavity is illustrated and is assumed to be relatively arbitrarily shaped, and the open front end of the cavity is illuminated by an arbitrarily polarized external plane wave field. The interior obstacle is assumed to be located within the cavity near the back end, and it generally contributes significantly to the fields scattered into the exterior by the entire cavity configuration. The present scattering analysis is restricted to within approximately 70 degs from boresight with respect to the open front end; outside of this region, the scattering by the external features of the cavity are generally more significant than from the interior of the cavity. The scattering analysis is composed of two main parts. One analysis is of the coupling of the incident plane wave field, via the open front end using the high frequency ray or beam shooting methods. The other analysis deals with separately obtaining the plane wave scattering characteristics of the interior obstacle. Thus the present analysis represents a hybrid combination of an asymptotic high frequency ray/beam method for tracking the fields through the cavity, together with any suitable method for obtaining a plane wave characterization of the interior obstacle.

Pathak, Prabhakar H.

1991-01-01

400

Late Emission from the Type Ib/c SN 2001em: Overtaking the Hydrogen Envelope  

E-print Network

The Type Ib/c supernova SN 2001em was observed to have strong radio, X-ray, and Halpha emission at an age of about 2.5 yr. Although the radio and X-ray emission have been attributed to an off-axis gamma-ray burst, we model the emission as the interaction of normal SN Ib/c ejecta with a dense, massive (3 Msun) circumstellar shell at a distance about 7 x 10^{16} cm. We investigate two models, in which the circumstellar shell has or has not been overtaken by the forward shock at the time of the X-ray observation. The circumstellar shell was presumably formed by vigorous mass loss with a rate (2-10) x 10^{-3} Msun/yr at 1000-2000 yr prior to the supernova explosion. The hydrogen envelope was completely lost, and subsequently was swept up and accelerated by the fast wind of the presupernova star up to a velocity of 30-50 km/s. Although interaction with the shell can explain most of the late emission properties of SN 2001em, we need to invoke clumping of the gas to explain the low absorption at X-ray and radio wavelengths.

Nikolai N. Chugai; Roger A. Chevalier

2005-10-12

401

Real-time motion compensation for EM bronchoscope tracking with smooth output - ex-vivo validation  

NASA Astrophysics Data System (ADS)

Navigated bronchoscopy provides benefits for endoscopists and patients, but accurate tracking information is needed. We present a novel real-time approach for bronchoscope tracking combining electromagnetic (EM) tracking, airway segmentation, and a continuous model of output. We augment a previously published approach by including segmentation information in the tracking optimization instead of image similarity. Thus, the new approach is feasible in real-time. Since the true bronchoscope trajectory is continuous, the output is modeled using splines and the control points are optimized with respect to displacement from EM tracking measurements and spatial relation to segmented airways. Accuracy of the proposed method and its components is evaluated on a ventilated porcine ex-vivo lung with respect to ground truth data acquired from a human expert. We demonstrate the robustness of the output of the proposed method against added artificial noise in the input data. Smoothness in terms of inter-frame distance is shown to remain below 2 mm, even when up to 5 mm of Gaussian noise are added to the input. The approach is shown to be easily extensible to include other measures like image similarity.

Reichl, Tobias; Gergel, Ingmar; Menzel, Manuela; Hautmann, Hubert; Wegner, Ingmar; Meinzer, Hans-Peter; Navab, Nassir

2012-02-01

402

Kinetics of CHO A L mutant expression after treatment with gamma radiation, EMS, and asbestos.  

PubMed

The flow cytometry mutation assay (FCMA) uses hybrid CHO A(L) cells to measure mutations of the cd59 gene located on human chromosome 11 by the absence of fluorochrome-conjugated antibody binding to the CD59 surface antigen. Mutant expression peaks between 6 and 12 days, then decreases to a stable plateau, instead of a constant mutant fraction obtained by clonogenic assays. To evaluate this variable mutant expression time, cells were treated with radiation, EMS or asbestos and cell proliferation and survival were measured at times leading up to peak mutant expression. Potential doubling time (T(pot)) values increased by at least 75% for each agent by 3 h after treatment but returned to control levels after only 3 days. Survival returned to 90% of control within a week, close to the peak expression day for all three agents. The survival of CD59(-) cells sorted on the peak day of expression was roughly half that of CD59(+) cells. Cloned EMS-treated CD59(-) cells had a doubling time of 16.7 vs. 14.1 h for CD59(+) cells. Triple mutants (CD59(-)/CD44(-)/CD90(-)) were preferentially lost from the population over time, while the proportion of CD59(-)/CD90(-) mutants increased. In conclusion, the peak day of mutant expression occurs only when cells recover from the toxic effects of the mutagen. A fraction of cells originally quantified as mutants are lost over time due to lethal deletions and slower growth. PMID:19291804

Keysar, Stephen B; Fox, Michael H

2009-05-01

403

Kinetics of CHO AL mutant expression after treatment with ? radiation, EMS and asbestos  

PubMed Central

The flow cytometry mutation assay (FCMA) uses hybrid CHO AL cells to measure mutations of the cd59 gene located on human chromosome 11 by the absence of fluorochrome-conjugated antibody binding to the CD59 surface antigen. Mutant expression peaks between 612 days, then decreases to a stable plateau, instead of a constant mutant fraction obtained by clonogenic assays. To evaluate this variable mutant expression time, cells were treated with radiation, EMS or asbestos and cell proliferation and survival were measured at times leading up to peak mutant expression. Potential doubling time (Tpot) values increased by at least 75% for each agent by 3 hr after treatment but returned to control levels after only three days. Survival returned to 90% of control within a week, close to the peak expression day for all 3 agents. The survival of CD59? cells sorted on the peak day of expression was roughly half that of CD59+ cells. Cloned EMS-treated CD59? cells had a doubling time of 16.7 hr vs. 14.1 hr for CD59+ cells. Triple mutants (CD59?/CD44?/CD90?) were preferentially lost from the population over time, while the proportion of CD59?/CD90? increased. In conclusion, the peak day of mutant expression occurs only when cells recover from the toxic effects of the mutagen. A fraction of cells originally quantified as mutants are lost over time due to lethal deletions and slower growth. PMID:19291804

Keysar, Stephen B.; Fox, Michael H.

2009-01-01

404

Anlise das Atribuies Causais do Sucesso e do Insucesso na Competio, em Funo do Nvel Competitivo dos Futebolistas Portugueses Analysis of Causal Attributions of Success and Failure in Competitions Regarding Portuguese Soccer Players' Competition Level  

Microsoft Academic Search

Resumo Tendo como referncia o modelo atribuicional da motivao e emoo de Weiner (1979), pretendeu-se avaliar as atribuies causais, em situaes de sucesso e insucesso desportivo, em funo da influncia dos diferentes nveis competitivos dos futebolistas portugueses. Analisando uma amostra que integrou 125 futebolistas, que participaram em trs nveis competitivos do futebol portugus (II Diviso; III Diviso; I Diviso Distrital),

Paulo Malico Sous; Antnio Boleto Rosado; Tlia Maia Cabrita

405

Measurements of visual double stars with a 6" reflector and a em-ccd imaging device. (French Title: Mesures d'toiles doubles avec un tlescope de 150mm et une camra em-ccd)  

NASA Astrophysics Data System (ADS)

This paper presents the measurements of 192 visual double stars obtained between Avr 2010 and Feb 2011 with a 6" reflector telescope and an EM-CCD camera. The sensibility of this kind of imaging device allowed us to obtain reliable measures for systems up to mag 12.

Srot, J.

2011-09-01

406

Dficits neurolgicos y aracnoiditis secundarios a anestesia neuroaxial: rol de parestesias, punciones durales, anestsicos locales y gnero. Protocolo para su tratamiento  

Microsoft Academic Search

IntroductionAmong the complications of neuroaxial anesthesia, arachnoiditis and neurological deficit represent one of the most serious problems that anesthesiologists can face. Although the real frequency of this complication is unknown, the functional consequences for the patient and legal repercussions for the physician are devastating, mainly because most patients are not treated in a timely fashion, increasing the probability of a

A. Ramrez Bermejo; J. A. Aldrete; N. C. Godnez Cubillo; S. Bautista Snchez; R. Ghaly; A. Kassian Rank

2009-01-01

407

AVALIAO DE SEIS PROTOCOLOS PR-ANESTSICOS PARA ANESTESIA EPIDURAL DE CANINOS* EVALUATION OF SIX PREANESTHETIC COMBINATIONS TO CANINE EPIDURAL ANESTHESIA  

Microsoft Academic Search

Various pre-anaesthetic protocols can be used in an anaesthetic regimen that includes epidural anesthesia. Different drug availability and drug combinations allows adjusting the anaesthetic procedure to each patient, con- cerning to the risk grade and temperament. The choosing of a pre-anaesthetic protocol needs to be judicious, to allow the correct execution of the epidural anaesthetic technique, without challenging its safety.

SILVIA PRAXEDES; ROBERTO BRAGA DE MELLO

2002-01-01

408

CO2 Washout Testing of the REI and EM-ACES Space Suits  

NASA Technical Reports Server (NTRS)

Requirements for using a space suit during ground testing include providing adequate carbon dioxide (CO2) washout for the suited subject. Acute CO2 exposure can lead to symptoms including headache, dyspnea, lethargy and eventually unconsciousness or even death. Symptoms depend on several factors including partial pressure of CO2 (ppCO2), duration of exposure, metabolic rate of the subject and physiological differences between subjects. The objective of this test was to characterize inspired oronasal ppCO2 in the Rear Entry I-Suit (REI) and the Enhanced Mobility Advanced Crew Escape Suit (EM-ACES) across a range of workloads and flow rates for which ground testing is nominally performed. Three subjects were tested in each suit. In all but one case, each subject performed the test twice to allow for comparison between tests. Suit pressure was maintained at 4.3 psid. Subjects wore the suit while resting, performing arm ergometry, and walking on a treadmill to generate metabolic workloads of approximately 500 to 3000 BTU/hr. Supply airflow was varied at 6, 5 and 4 actual cubic feet per minute (ACFM) at each workload. Subjects wore an oronasal mask with an open port in front of the mouth and were allowed to breathe freely. Oronasal ppCO2 was monitored real-time via gas analyzers with sampling tubes connected to the oronasal mask. Metabolic rate was calculated from the total CO2 production measured by an additional gas analyzer at the air outlet from the suit. Real-time metabolic rate was used to adjust the arm ergometer or treadmill workload to meet target metabolic rates. In both suits, inspired CO2 was primarily affected by the metabolic rate of the subject, with increased metabolic rate resulting in increased inspired ppCO2. Suit flow rate also affected inspired ppCO2, with decreased flow causing small increases in inspired ppCO2. The effect of flow was more evident at metabolic rates greater than or equal to 2000 BTU/hr. Results were consistent between suits, with the EM-ACES demonstrating slightly better CO2 washout than the REI suit, but not statistically significant. Regression equations were developed for each suit to predict the mean inspired ppCO2 as a function of metabolic rate and suit flow rate. This paper provides detailed descriptions of the test hardware, methodology and results, as well as implications for future ground testing in the REI and EM-ACES.

Mitchell, Kate; Norcross, Jason

2011-01-01

409

Georeferencing natural disaster impact footprints : lessons learned from the EM-DAT experience  

NASA Astrophysics Data System (ADS)

The Emergency Events Database (EM-DAT) contains data about the occurrence and consequences of all the disasters that have taken place since 1900. The main objectives of the database are to serve the purposes of humanitarian action at national and international levels; to aid decision making for disaster preparedness, as well as providing an objective base for vulnerability assessments and priority setting. EM-DAT records data on the human and economic impacts for each event as well as the location of said event. This is recorded as text data, namely the province, department, county, district, or village. The first purpose of geocoding (or georeferencing) the EM-DAT database is to transform the location data from text format into code data. The GAUL (Global Administrative Unit Layers) database (FAO) is used as a basis to identify the geographic footprint of the disaster, ideally to the second administrative level and add a unique code for each affected unit. Our first step has involved georeferencing earthquakes since the location of these is precise. The second purpose is to detail the degree of precision of georeferencing. The application and benefits of georeferencing are manifold. The geographic information of the footprint of past (after 2000) and future natural disasters permits the location of vulnerable areas with a GIS system and to cross data from different sources. It will allow the study of different elements such as the extent of a disaster and its human and economic consequences; the exposure and vulnerability of the population in space and time and the efficiency of mitigation measures. In addition, any association between events and external factors can be identified (e.g.: is the famine located at the same places as drought?) and precision of the information in the disaster report can be evaluated. Besides this, these maps will provide valuable communication support since maps have a high communication power and are easily understandable by the wider public and policy makers. Some results from the application of georeferencing will be presented during the session such as a study of the population potentially exposed and affected by natural disasters in Europe, a flood vulnerability analysis in Vietnam and the potential merging of watersheds analysis and flood footprints data.

Wallemacq, Pascaline; Guha Sapir, Debarati

2014-05-01

410

Global coupled EM-electrical-thermal simulation and experimental validation for a spatial power combining MMIC array  

Microsoft Academic Search

A unique electromagnetic (EM)-electrothermal global simulation tool based on a universal error concept is presented. The advantages of this electrothermal model are illustrated by comparison with a commercial electrothermal circuit simulator. The first description of a fully physical, electrothermal, microwave circuit simulation, based on coupling of the Leeds Physical Model of MESFETs and high electron-mobility transistors, to a microwave circuit

William Batty; Carlos E. Christoffersen; Alexander B. Yakovlev; John F. Whitaker; Amir Mortazawi; Ayman Al-Zayed; Mete Ozkar; Sean C. Ortiz; Ronald M. Reano; Kyoung Yang; Linda P. B. Katehi; Christopher M. Snowden; Michael B. Steer

2002-01-01

411

Investigation of strain-sensing materials based on EM surface wave propagation for steel bridge health monitoring  

E-print Network

and transporta- tion agencies throughout the United States. In 2007, the I-35W bridge, which spans the Mississippi River in Minneapolis, Minne- sota, collapsed and killed 13 people [31]. The collapse of the bridgeInvestigation of strain-sensing materials based on EM surface wave propagation for steel bridge

Hanson, George

412

4U 0614+091: The Near UV X-ray Connection A. Zell and E.M. Cackett  

E-print Network

accretion rate could be responsible for blocking some of the hard X- ray emission of Cyg X-2 therefore angle this could also have affected the hard X-ray count rate. A higher inclination angle could block4U 0614+091: The Near UV ­ X-ray Connection A. Zell and E.M. Cackett Department of Physics

Cinabro, David

413

Optimal design and FEM analysis of the superconducting magnets of EMS-MAGLEV models using Bi2223 tapes  

Microsoft Academic Search

The focus of our research is to explore the possibility for designing and fabricating a new electromagnetic suspension (EMS-MAGLEV) model with high temperature superconductors (HTS). The magnets of our model were designed to possess 250-kg vertical suspension force. The cross sectional shapes and the configurations of HTS magnets were analyzed with FEM and evolution strategies. The design variables are the

Guoqiang Zhang; Youtong Fang; Fuchuan Song; Guiping Zhu; Zanji Wang

2004-01-01

414

The Contributions of E.M. Tiffany and the FFA Creed to Leadership Development within the FFA  

ERIC Educational Resources Information Center

The FFA Creed by E.M. Tiffany has influenced the lives of countless FFA members. However, the creed has received little attention in terms of its origin. A creed is a foundational component for many organizations. It serves to establish collective vision and goals with the intent of providing purpose and direction to the individual as well as the

Connors, James J.; Velez, Jonathan J.

2008-01-01

415

PLANILHA DE NECESSIDADES UNIFICADA Balo volumtrico 100 ml; Balo fabricado em vidro boro classe A com rolha de  

E-print Network

,3 cm Caixa de ferramentas produzida em polipropileno, produto reciclável de boa resistência a impacto acima de 15 °C possui boa estabilidade térmica. Além de boa resistência química e a solventes

Paraná, Universidade Federal do

416

Body Size in Relation to Urinary Estrogens and Estrogen Metabolites (EM) among Premenopausal Women during the Luteal Phase  

PubMed Central

Estrogen metabolism profiles may play an important role in the relationship between body size and breast carcinogenesis. Previously, we observed inverse associations between current body mass index (BMI) and plasma levels of parent estrogens (estrone and estradiol) among premenopausal women during both follicular and luteal phases. Using data from the Nurses Health Study II (NHS II), we assessed whether height, current BMI, and BMI at age 18 were associated with the urinary concentrations of 15 estrogens and estrogen metabolites (jointly referred to as EM) measured during the luteal phase among 603 premenopausal women. We observed inverse associations with total EM for height (Ptrend=0.01) and current BMI (Ptrend=0.01), but not BMI at age 18 (Ptrend=0.26). Six EMs were 1827% lower in women with a height 68+ inches versus ?62 inches, primarily in the methylated catechol pathway (Ptrend=0.04). Eight EMs were 1850% lower in women with a BMI of 30+ versus <20, primarily in the 2-catechol and methylated catechol pathways (Ptrend<0.001 for both). Our results suggest that height and current BMI are associated with estrogen metabolism profiles in premenopausal women. Further studies with timed urine and blood collections are required to confirm and extend our findings. PMID:23011724

Xie, Jing; Eliassen, A. Heather; Xu, Xia; Matthews, Charles E.; Hankinson, Susan E.; Ziegler, Regina G.; Tworoger, Shelley S.

2012-01-01

417

Multiple scattering of EM waves by spheres part I--Multipole expansion and ray-optical solutions  

Microsoft Academic Search

Solution to the multiple scattering of electromagnetic (EM) waves by two arbitrary spheres has been pursued first by the multipole expansion method. Previous attempts at numerical solution have been thwarted by the complexity of the translational addition theorem. A new recursion relation is derived which reduces the computation effort by several orders of magnitude so that a quantitative analysis for

J. H. Bruning; Yuen Lo

1971-01-01

418

EDITAL N 66/2012 Processo Seletivo do Curso de Ps-Graduao Lato Sensu em Gesto Pblica  

E-print Network

Brasil. 1. DOS REQUISITOS PARA MATRÍCULA Art. 1º ­ A matrícula será realizada no polo em que o candidato: - Diploma de nível superior; - Histórico escolar de nível superior; - Carteira de Identidade; - CPF

Paraná, Universidade Federal do

419

EDITAL N 65/2012 Processo Seletivo do Curso de Ps-Graduao Lato Sensu em Gesto da Sade,  

E-print Network

destinadas ao curso em conformidade com o ­ UAB/CAPES/MEC ­ Sistema Universidade Aberta do Brasil. 1. DOS; - Carteira de Identidade; - CPF; - Título de Eleitor e comprovante de votação da última eleição; - Certidão

Paraná, Universidade Federal do

420

The Dynamic Dielectric at a Brain Functional Site and an EM Wave Approach to Functional Brain Imaging  

PubMed Central

Functional brain imaging has tremendous applications. The existing methods for functional brain imaging include functional Magnetic Resonant Imaging (fMRI), scalp electroencephalography (EEG), implanted EEG, magnetoencephalography (MEG) and Positron Emission Tomography (PET), which have been widely and successfully applied to various brain imaging studies. To develop a new method for functional brain imaging, here we show that the dielectric at a brain functional site has a dynamic nature, varying with local neuronal activation as the permittivity of the dielectric varies with the ion concentration of the extracellular fluid surrounding neurons in activation. Therefore, the neuronal activation can be sensed by a radiofrequency (RF) electromagnetic (EM) wave propagating through the site as the phase change of the EM wave varies with the permittivity. Such a dynamic nature of the dielectric at a brain functional site provides the basis for an RF EM wave approach to detecting and imaging neuronal activation at brain functional sites, leading to an RF EM wave approach to functional brain imaging. PMID:25367217

Li, X. P.; Xia, Q.; Qu, D.; Wu, T. C.; Yang, D. G.; Hao, W. D.; Jiang, X.; Li, X. M.

2014-01-01

421

General Physics II Exam 3 -Chs. 2225 -EM Waves & Optics April 12, 2010 Name Rec. Instr. Rec. Time  

E-print Network

. red light. d. blue light. e. ultraviolet. f. AM radio. g. all tie. 5. (8) 150 MHz radio waves travel. 1. (2) An electromagnetic wave is traveling due north with electric field vector oscillating east. (2) An EM wave travels due north. At a point in space where the electric field instantaneously has

Wysin, Gary

422

General Physics II Exam 3 -Chs. 2225 -EM Waves & Optics October 24, 2013 Name Rec. Instr. Rec. Time  

E-print Network

is perpendicular to E but out of phase with E. 6. (12) 450 MHz radio waves travel out from a transmitter. 1. (3) An electromagnetic wave is traveling due north with electric field vector oscillating east. (3) An EM wave travels due north. At a point in space where the electric field instantaneously has

Wysin, Gary

423

[1] R C. Arkin, E.M. Riseman, and A. R. Hanson. Aura: And architecture for vision-based robot  

E-print Network

#12;[1] R C. Arkin, E.M. Riseman, and A. R. Hanson. Aura: And architecture for vision-based robot, pages 319-326, Los Altos, 1988. [5] T. S. Levitt, D. T. Lawton, D. M. Chelberg, and P. C. Nelson: The drop-off problem. In Proceedings of the DARPA Image Understand- ing Workshop, 1990. [14] C..Thorpe, S

Southern California, University of

424

Relaes solo-geoambiente em reas de ocorrncias de Ipucas na plancie do Mdio Araguaia - Estado de Tocantins  

Microsoft Academic Search

RESUMO - Dentre as paisagens do mdio rio Araguaia, destacam-se as extensas plancies e depresses sazonalmente alagadas. Nelas se inserem formaes florestais higrfilas denominadas Ipucas, como enclaves peculiares pela sua fitossociologia e ambiente pedogeomorfolgico. Esses fragmentos florestais naturais ocorrem na plancie fluvial, em regio de ectono entre o Cerrado e a Floresta Amaznica. Neste estudo, foi selecionada uma rea de

Alan Kardec Elias Martins; Carlos Ernesto G. R. Schaefer; Elias Silva; Vicente Paulo Soares; Guilherme Resende Corra; Bruno Arajo Furtado de Mendona

2006-01-01

425

Development of Grounded Electrical Source Airborne Transient EM (GREATEM) Survey System and Its Application to Investigating a Volcano Structure  

Microsoft Academic Search

We have developed an airborne EM system that uses a grounded electrical source and an airborne magnetic field receiver to increase the depth of investigation. Using a grounded source, we can apply a large source moment with a long transmitter-receiver distance, thus we expect to obtain a greater depth of investigation. However, the area of survey is limited with this

T. Mogi; A. Jomori; N. Jomori; Y. Azuma; E. Y. Fomenko

2005-01-01

426

Finite-difference simulation of borehole EM logging measurements in 3D anisotropic subsurface media using coupled potentials  

E-print Network

or potential formulation). #12;3 It is a common practice in the analysis of EM boundary-value problems to use the boundary-value problems for Maxwell's equations, or the second-order partial differential equations (PDE-scalar potentials subject to the appropriate boundary conditions, and approximated with finite volume central finite

Torres-Verdín, Carlos

427

The Value of Bus Rapid Transit: Hedonic Price Analysis of the EmX in Eugene, Oregon  

E-print Network

1 The Value of Bus Rapid Transit: Hedonic Price Analysis of the EmX in Eugene, Oregon Peter and stimulating economic growth and employment opportunities. These are measured along the transit line through, 143). Other contributing factors to transit decisions include objectives and values, effects

Oregon, University of

428

A Rodaviva das Tecnologias Novas tecnologias do origem, em geral, a novos modelos de negcio que por sua vez  

E-print Network

A Roda­viva das Tecnologias Novas tecnologias dão origem, em geral, a novos modelos de negócio que palavras, velhas tecnologias reaparecem com uma nova roupagem como se submetidas a um processo de mundo. O uso dos browsers para utilizar esses servidores é nada mais do que uma nova roupagem para um

429

Evoluindo para uma Arquitetura de Groupware Baseada em Componentes: o Estudo de Caso do Learningware AulaNet  

E-print Network

Evoluindo para uma Arquitetura de Groupware Baseada em Componentes: o Estudo de Caso do}@inf.puc-rio.br;abraposo@tecgraf.puc-rio.br Abstract. Groupware must be flexible in order to satisfy the different characteristics and the continuous as a basis for building different types of groupware. It ensues in the new AulaNet architecture

Barbosa, Alberto

430

Determination of probability distribution of diplotype configuration (diplotype distribution) for each subject from genotypic data using the EM algorithm  

Microsoft Academic Search

summary Haplotype analysis is important for mapping traits. Recently, methods for estimating haplotype frequencies from genotypes of unrelated individuals based on the expectation-maximization (EM) algorithm have been developed. Our program estimates haplotype frequencies in the population and determines the posterior probability distribution of diplotype configuration (diplotype distribution) for each subject based on the estimated haplotype frequencies. Samples from three ethnic

Y. KITAMURA; M. MORIGUCHI; H. KANEKO; H. MORISAKI; T. MORISAKI; K. TOYAMA; N. KAMATANI

2002-01-01

431

Prediction of the field radiated at one meter from PCB's and microprocessors from near EM field cartography  

Microsoft Academic Search

The paper shows a near field scanning method to characterize chips that leads to the prediction of the coupling phenomena on the electronic board and to the evaluation of the radiated emission at one meter. A theoretical model is first given for simple circuits. An estimation of the scalar and vector potentials is found with the EM scan. Using these

F. de Daran; J. Chollet-Ricard; F. Lafon; O. Maurice

2003-01-01

432

On the tsunami-induced EM fields at the seafloor: Lessons learned from the 2006-2007 Kuril  

E-print Network

On the tsunami-induced EM fields at the seafloor: Lessons learned from the 2006-2007 Kuril and 2011 Tohoku tsunamis Hiroaki Toh, D.Sc. Graduate School of Science, Kyoto University, Japan Ctvrtek, 6. r with tsunamis from two earthquakes occurred along the Kuril Trench. Previous seismological analyses indicated

Cerveny, Vlastislav

433

Details of the Electro-Mechanical (E/M) Impedance Health Monitoring of Spot-Welded Structural Joints  

E-print Network

-alloy spot-welded lap shear specimens under fatigue loading to determine a stable pattern of crack1 Details of the Electro-Mechanical (E/M) Impedance Health Monitoring of Spot-Welded Structural, spot- welding play a major role. Spot welding is the traditional method of assembly for steel

Giurgiutiu, Victor

434

Monop olos e Curvas Alg ebricas -Curso de Mestrado em Matem atica Aplicada -IST Jo~ao Pimentel Nunes  

E-print Network

;es de quocientes hiperKahler; 10. Eq. de Korteg de Vries, eq. de Bogomolny, eq. de Hitchin, eq. deMonop#19;olos e Curvas Alg#19;ebricas - Curso de Mestrado em Matem#19;atica Aplicada - IST Jo~ao Pimentel Nunes Sum#19;ario: A teoria de monop#19;olos magn#19;eticos e as t#19;ecnicas usadas para o seu

Lisboa, Universidade Técnica de

435

Um estudo do uso de SGBDs relacionais em arquiteturas de jogos multi-jogador Lauro Eduardo Kozovits  

E-print Network

Um estudo do uso de SGBDs relacionais em arquiteturas de jogos multi-jogador Lauro Eduardo Kozovits balance, scalability. Resumo: A tecnologia de jogos com número elevado de jogadores é tanto um negócio uma especialização dentro da área de ambientes virtuais distribuídos, jogos multi-jogador possuem

Endler, Markus

436

Planejamento Estratgico do Programa de Ps-Graduao em Fsica da Universidade Federal do Paran para o ano de 2012  

E-print Network

a constante atualização da infraestrutura computacional de pesquisa. Em particular: manter constante e confiável o acesso a essa estrutura computacional de pesquisa, promovendo a atualização regular do servidor de acesso aos recursos de computação científica; aprimorar o parque computacional existente. 2

Paraná, Universidade Federal do

437

CryoEM and mutagenesis reveal that the smallest capsid protein cements and stabilizes Kaposi's sarcoma-associated herpesvirus capsid.  

PubMed

With just one eighth the size of the major capsid protein (MCP), the smallest capsid protein (SCP) of human tumor herpesviruses-Kaposi's sarcoma-associated herpesvirus (KSHV) and Epstein-Barr virus (EBV)-is vital to capsid assembly, yet its mechanism of action is unknown. Here, by cryoEM of KSHV at 6- resolution, we show that SCP forms a crown on each hexon and uses a kinked helix to cross-link neighboring MCP subunits. SCP-null mutation decreased viral titer by 1,000 times and impaired but did not fully abolish capsid assembly, indicating an important but nonessential role of SCP. By truncating the C-terminal half of SCP and performing cryoEM reconstruction, we demonstrate that SCP's N-terminal half is responsible for the observed structure and function whereas the C-terminal half is flexible and dispensable. Serial truncations further highlight the critical importance of the N-terminal 10 aa, and cryoEM reconstruction of the one with six residues truncated localizes the N terminus of SCP in the cryoEM density map and enables us to construct a pseudoatomic model of SCP. Fitting of this SCP model and a homology model for the MCP upper domain into the cryoEM map reveals that SCP binds MCP largely via hydrophobic interactions and the kinked helix of SCP bridges over neighboring MCPs to form noncovalent cross-links. These data support a mechanistic model that tumor herpesvirus SCP reinforces the capsid for genome packaging, thus acting as a cementing protein similar to those found in many bacteriophages. PMID:25646489

Dai, Xinghong; Gong, Danyang; Xiao, Yuchen; Wu, Ting-Ting; Sun, Ren; Zhou, Z Hong

2015-02-17

438

Peaks and decays of student knowledge in an introductory E&M course  

NSDL National Science Digital Library

A common format for assessment of learning is pretesting and post-testing. In this study, we collect student test data several times per week throughout a course, allowing for the measurement of the changes in student knowledge with a time resolution on the order of a few days. To avoid the possibility of test-retest effects, separate and quasirandom subpopulations of students are tested on a variety of tasks. We report on data taken in a calculus-based introductory E&M class populated primarily by engineering majors. Unsurprisingly for a traditional introductory course, there is little change in many conceptual questions. However, the data suggest that some student performance peaks and decays rapidly during a quarter, a pattern consistent with memory research yet unmeasurable by pretesting and post-testing. In addition, it appears that some course topics can interfere with prior knowledge, decreasing performance on questions related to earlier topics in the course.

Sayre, Eleanor C.; Heckler, Andrew F.

2010-06-29

439

Semi-automated selection of cryo-EM particles in RELION-1.3  

PubMed Central

The selection of particles suitable for high-resolution cryo-EM structure determination from noisy micrographs may represent a tedious and time-consuming step. Here, a semi-automated particle selection procedure is presented that has been implemented within the open-source software RELION. At the heart of the procedure lies a fully CTF-corrected template-based picking algorithm, which is supplemented by a fast sorting algorithm and reference-free 2D class averaging to remove false positives. With only limited user-interaction, the proposed procedure yields results that are comparable to manual particle selection. Together with an improved graphical user interface, these developments further contribute to turning RELION from a stand-alone refinement program into a convenient image processing pipeline for the entire single-particle approach. PMID:25486611

Scheres, Sjors H.W.

2015-01-01

440

Identifying conformational states of macromolecules by eigen-analysis of resampled cryo-EM images  

PubMed Central

Summary We present the codimensional PCA, a novel and straightforward method for resolving sample heterogeneity within a set of cryo-EM 2D projection images of macromolecular assemblies. The method employs Principal Component Analysis (PCA) of resmapled 3D structures computed using subsets of 2D data obtained with a novel hypergeometric sampling scheme. PCA provides us with a small subset of dominating eingevolumes of the system, whose reprojections are compared with experimental projection data to yield their factorial coordinates constructed in a common framework of the 3D space of the macromolecule. Codimensional PCA is unique in the dramatic reduction of dimensionality of the problem, which facilitates rapid determination of both the plausible number of conformers in the sample and their 3D structures. We applied the codimensional PCA to a complex data set of T. thermophilus 70S ribosome, and we identified four major conformational states and visualized high mobility of the stalk base region. PMID:22078558

Penczek, Pawel A.; Kimmel, Marek; Spahn, Christian M.T.

2012-01-01

441

Relation Between Basophilia and Fine Structure of Cytoplasm in the Fungus Allomyces macrogynus Em  

PubMed Central

In a fungus, Allomyces macrogynus Em., staining tests have revealed changes in the location of cytoplasmic basophilia following different phases of the developmental cycle. These variations in location were used to observe which fine structures correspond to basophile and non-basophile areas of the cytoplasm. Hyphae, gametangia, zygotes, and plants were fixed at various developmental stages in OsO4, pH 6.1, and embedded in vestopal. Sections were examined in the electron microscope. Comparison of basophile and non-basophile cytoplasms leads to the conclusion that cytoplasmic particles of 150 to 200 A in diameter are responsible for basophilia. The possibility of these particles being ribosomes is discussed and confirmed. The present paper also describes some observations on the fine structure of other cellular components of this fungus, such as nuclei, mitochondria, various granules, and flagella. PMID:13801597

Blondel, Benigna; Turian, Gilbert

1960-01-01

442

Real time EM waves monitoring system for oil industry three phase flow measurement  

NASA Astrophysics Data System (ADS)

Monitoring fluid flow in a dynamic pipeline is a significant problem in the oil industry. In order to manage oil field wells efficiently, the oil industry requires accurate on line sensors to monitor the oil, gas, and water flow in the production pipelines. This paper describes a non-intrusive sensor that is based on an EM Waves cavity resonator. It determines and monitors the percentage volumes of each phase of three phase (oil, gas, and water) in the pipeline, using the resonant frequencies shifts that occur within an electromagnetic cavity resonator. A laboratory prototype version of the sensor system was constructed, and the experimental results were compared to the simulation results which were obtained by the use of High Frequency Structure Simulation (HFSS) software package.

Al-Hajeri, S.; Wylie, S. R.; Shaw, A.; Al-Shamma'a, A. I.

2009-07-01

443

Semi-automated selection of cryo-EM particles in RELION-1.3.  

PubMed

The selection of particles suitable for high-resolution cryo-EM structure determination from noisy micrographs may represent a tedious and time-consuming step. Here, a semi-automated particle selection procedure is presented that has been implemented within the open-source software RELION. At the heart of the procedure lies a fully CTF-corrected template-based picking algorithm, which is supplemented by a fast sorting algorithm and reference-free 2D class averaging to remove false positives. With only limited user-interaction, the proposed procedure yields results that are comparable to manual particle selection. Together with an improved graphical user interface, these developments further contribute to turning RELION from a stand-alone refinement program into a convenient image processing pipeline for the entire single-particle approach. PMID:25486611

Scheres, Sjors H W

2015-02-01

444

Test of 3D CT reconstructions by EM + TV algorithm from undersampled data  

SciTech Connect

Computerized tomography (CT) plays an important role in medical imaging for diagnosis and therapy. However, CT imaging is connected with ionization radiation exposure of patients. Therefore, the dose reduction is an essential issue in CT. In 2011, the Expectation Maximization and Total Variation Based Model for CT Reconstruction (EM+TV) was proposed. This method can reconstruct a better image using less CT projections in comparison with the usual filtered back projection (FBP) technique. Thus, it could significantly reduce the overall dose of radiation in CT. This work reports the results of an independent numerical simulation for cone beam CT geometry with alternative virtual phantoms. As in the original report, the 3D CT images of 128 Multiplication-Sign 128 Multiplication-Sign 128 virtual phantoms were reconstructed. It was not possible to implement phantoms with lager dimensions because of the slowness of code execution even by the CORE i7 CPU.

Evseev, Ivan; Ahmann, Francielle; Silva, Hamilton P. da [Universidade Tecnologica Federal do Parana - UTFPR/FB, 85601-970, Caixa Postal 135, Francisco Beltrao - PR (Brazil); Schelin, Hugo R. [Universidade Tecnologica Federal do Parana-UTFPR/FB,85601-970,Caixa Postal 135,Francisco Beltrao-PR (Brazil) and Faculdades Pequeno Principe-FPP, Av. Iguacu, 333, Rebou (Brazil); Yevseyeva, Olga [Universidade Federal de Santa Catarina - UFSC/ARA, 88900-000, Rua Pedro Joao Pereira, 150, Ararangua - SC (Brazil); Klock, Margio C. L. [Universidade Federal do Parana - UFPR Litoral, 80230-901, Rua Jaguaraiva 512, Caioba, Matinhos - PR (Brazil)

2013-05-06

445

Cryo-EM analysis reveals new insights into the mechanism of action of pyruvate carboxylase  

PubMed Central

Summary Pyruvate carboxylase (PC) is a conserved multifunctional enzyme linked to important metabolic diseases. PC homotetramer is arranged in two layers with two opposing monomers per layer. Cryo-EM explores the conformational variability of PC in the presence of different substrates. The results demonstrate that the biotin-carboxyl carrier protein (BCCP) domain localizes near the biotin carboxylase (BC) domain of its own monomer and travels to the carboxyltransferase (CT) domain of the opposite monomer. All density maps show noticeable conformational differences between layers, mainly for the BCCP and BC domains. This asymmetry may be indicative of a coordination mechanism where monomers from different layers catalyze the BC and CT reactions consecutively. A conformational change of the PC tetramerization (PT) domain suggests a new functional role in communication. A long-range communication pathway between subunits in different layers, via interacting PT-PT and BC-BC domains, may be responsible for the cooperativity of PC from S. aureus. PMID:20947019

Lasso, Gorka; Yu, Linda P.C.; Gil, David; Xiang, Song; Tong, Liang; Valle, Mikel

2010-01-01

446

SEI: Junior E&M I Course Materials - Concept Tests/Clicker Questions  

NSDL National Science Digital Library

This concept test / clicker question collection was constructed over the course of four semesters of a transformed junior-level Electricity and Magnetism course on electro- and magneto-statics. The questions are intended to be used with personal response systems as peer instruction. Some comments in the notes section of each slide provides information about the results of use in class, such as average student responses. This material was developed as part of a education research-based course transformation for junior level E&M. All of the resources developed for this course are available, sorted by individual topic and type, at http://www.compadre.org/psrc/items/Relations.cfm?ID=7891.

Pollock, Steven J.; Chasteen, Stephanie V.; Kinney, Edward; Dubson, Michael

2010-06-09

447

Application of object-oriented techniques to software development in an EMS environment  

SciTech Connect

Power system operations and control are becoming more and more complex. The developers are being forced to analyze multiple environments (PC/workstations, expert systems or procedural systems, structural programming or Object-Oriented (OO) programming, and others) in order to deliver the capabilities that are expected from them. In this paper the authors share some of the insights that they have learned over the period of developing applications in a multi-hardware platform/multi-operating system environment: application of OO technology to simplify the software design, maintenance, and integration processes; provide a unified abstract interface to be integrated with other software components; use the same OO paradigm to design various parts of the system; provide an intuitive user interface; and reduce software development and maintenance costs. The authors have also provided a Source Database design case study to illustrate the use of OO technology in EMS application development. Some ideas explored in this paper have been fully utilized.

Vadari, S.; Ma, J.T.K. [CEGELEC ESCA Corp., Bellevue, WA (United States)

1995-12-31

448

Peaks and decays of student knowledge in an introductory E&M course  

NASA Astrophysics Data System (ADS)

A common format for assessment of learning is pretesting and post-testing. In this study, we collect student test data several times per week throughout a course, allowing for the measurement of the changes in student knowledge with a time resolution on the order of a few days. To avoid the possibility of test-retest effects, separate and quasirandom subpopulations of students are tested on a variety of tasks. We report on data taken in a calculus-based introductory E&M class populated primarily by engineering majors. Unsurprisingly for a traditional introductory course, there is little change in many conceptual questions. However, the data suggest that some student performance peaks and decays rapidly during a quarter, a pattern consistent with memory research yet unmeasurable by pretesting and post-testing. In addition, it appears that some course topics can interfere with prior knowledge, decreasing performance on questions related to earlier topics in the course.

Sayre, Eleanor C.; Heckler, Andrew F.

2009-06-01

449

System architecture and market aspects of an European Land Mobile Satellite System via EMS  

NASA Astrophysics Data System (ADS)

The paper describes an implementation scenario of a Land Mobile Satellite System via the EMS (European Mobile System) payload embarked on Italsat F-2. Some emphasis is given on market issues aiming at singling out business niches of Land Mobile Satellite Services (LMSS) in Europe. Other crucial issues exist such as: the alternate/competitive systems, the problems of interworking with other existing and/or planned systems, the definition of network architecture that better fits the user requirements, the marketing strategy and, last but not least, the financial evaluation of the project. The paper, on the basis of a study performed by Telespazio on behalf of ESA, discusses some of these issues with emphasis on competitive market aspects.

Ananasso, F.; Mistretta, I.

1992-03-01

450

Selection and characterization of lead alloys for use in the SDC EM Calorimeter  

SciTech Connect

Lead, because of it`s density and ductility, has been used by man for centuries for many things ranging from building materials, to piping; from electrical connections, to radiation shielding, and batteries. However, despite it`s extensive and varied use, not much is really known about it`s exact physical and structural properties except in a very rudimentary way. The SDC cast lead EM Calorimeter needs to take full advantage of all the properties that the lead alloy has to offer. Hence, a very thorough and detailed understanding of the properties of the lead-absorber structure must be obtained and controlled, so that the integrity of the calorimeter is not compromised. This paper will attempt to detail a series of ongoing experiments used to characterize and define the properties of the Calcium-Tin-Lead alloys for use in the SDC cast lead electromagnetic calorimeter.

Nasiatka, J.

1993-12-01

451

SEI: Upper-Division Electrodynamics (E&M 2) Course Materials  

NSDL National Science Digital Library

This web site contains a complete suite of resources suitable for the second semester of an undergraduate electricity and magnetism class. The materials developed include a suite of clicker questions, in-class activities, homework problems, and other assessments. The topics covered include Maxwell's time-dependent equations, AC circuits, conservation laws, electromagnetic waves in vacuum and media, potentials and gauge transformations, radiation & special relativity. This package of course materials also contains implementation guides, an archive of several past E&M II courses at the University of Colorado, and supporting materials such as explicit learning goals, relevant education research articles, and notes on common student difficulties. The materials are available in Word, Powerpoint, and PDF formats to facilitate their adaptation and implementation by others. Assessment materials are available from the authors upon request. The authors of these materials are seeking feedback to help in the refinement and improvement of these course materials and assessments.

Baily, Charles; Pollock, Steven J.; Dubson, Michael

2012-07-25

452

Effects of Dielectric Values and Substrate Materials on Electromagnetic (EM) Absorption in Human Head  

NASA Astrophysics Data System (ADS)

The aim of this study was to considered possible discrepancy in electromagnetic (EM) fascination in the human head. Commercially available software CST Microwave Studio based on the finite-difference time-domain (FDTD) method was adopted in this study. In this calculation, the conductivity and permittivity of all tissues were increased from 10 to 20% except using if not the same revelation conditions. Familiar cellular phone frequencies of 835, 900, and 1900 MHz were investigated in this research. The rise of up to 20% in conductivity, permittivity and varied substrate material always caused a SAR variation of 30.42% for SAR 1 g and 23.75% for SAR 10 g at 835 MHz, variation of 22.41% for SAR 1 g and 21.96% for SAR 10 g at 900 MHz and variation of 11.96% for SAR 1 g and 14.29% for SAR 10 g at 1900 MHz respectively.

Faruque, Mohammad Rashed Iqbal; Islam, Mohammad Tariqul; Misran, Norbahiah

2012-03-01

453

Respect your elders. Special considerations for EMS response to geriatric patients.  

PubMed

A variety of chronic pathologies often come along with the aging process and are experienced by many patients in late adulthood. EMS providers must be aware of the various challenges of transporting the geriatric population. And although an emphasis is often placed on the physical and medical issues associated with this population, it's also imperative to look at the whole picture to help prevent issues before they become an emegent problem. This includes being vigilant for elder abuse and neglect, as well as potential home hazards-including fall potentials and maintaining colder home temperatures-and dangerous cost-cutting measures, such as sharing medications. Prevention is key to helping older patients avoid potentially devastating situations, such as falls, medication errors and urban hyperthermia. But when those situations happen and providers are called to care for an older patient, compassion and demeanor are necessary to make this more vulnerable patient population comfortable and safe. PMID:24319883

Widmeier, Keith

2013-08-01

454

The three-dimensional structure of in vitro reconstituted Xenopus laevis chromosomes by EM tomography.  

PubMed

We have studied the in vitro reconstitution of sperm nuclei and small DNA templates to mitotic chromatin in Xenopus laevis egg extracts by three-dimensional (3D) electron microscopy (EM) tomography. Using specifically developed software, the reconstituted chromatin was interpreted in terms of nucleosomal patterns and the overall chromatin connectivity. The condensed chromatin formed from small DNA templates was characterized by aligned arrays of packed nucleosomal clusters having a typical 10-nm spacing between nucleosomes within the same cluster and a 30-nm spacing between nucleosomes in different clusters. A similar short-range nucleosomal clustering was also observed in condensed chromosomes; however, the clusters were smaller, and they were organized in 30- to 40-nm large domains. An analysis of the overall chromatin connectivity in condensed chromosomes showed that the 30-40-nm domains are themselves organized into a regularly spaced and interconnected 3D chromatin network that extends uniformly throughout the chromosomal volume, providing little indication of a systematic large-scale organization. Based on their topology and high degree of interconnectedness, it is unlikely that 30-40-nm domains arise from the folding of local stretches of nucleosomal fibers. Instead, they appear to be formed by the close apposition of more distant chromatin segments. By combining 3D immunolabeling and EM tomography, we found topoisomerase II to be randomly distributed within this network, while the stable maintenance of chromosomes head domain of condensin was preferentially associated with the 30-40-nm chromatin domains. These observations suggest that 30-40-nm domains are essential for establishing long-range chromatin associations that are central for chromosome condensation. PMID:17333236

Knig, Peter; Braunfeld, Michael B; Sedat, John W; Agard, David A

2007-08-01

455

EM-Navigated Catheter Placement for Gynecologic Brachytherapy: An Accuracy Study  

PubMed Central

Gynecologic malignancies, including cervical, endometrial, ovarian, vaginal and vulvar cancers, cause significant mortality in women worldwide. The standard care for many primary and recurrent gynecologic cancers consists of chemoradiation followed by brachytherapy. In high dose rate (HDR) brachytherapy, intracavitary applicators and/or interstitial needles are placed directly inside the cancerous tissue so as to provide catheters to deliver high doses of radiation. Although technology for the navigation of catheters and needles is well developed for procedures such as prostate biopsy, brain biopsy, and cardiac ablation, it is notably lacking for gynecologic HDR brachytherapy. Using a benchtop study that closely mimics the clinical interstitial gynecologic brachytherapy procedure, we developed a method for evaluating the accuracy of image-guided catheter placement. Future bedside translation of this technology offers the potential benefit of maximizing tumor coverage during catheter placement while avoiding damage to the adjacent organs, for example bladder, rectum and bowel. In the study, two independent experiments were performed on a phantom model to evaluate the targeting accuracy of an electromagnetic (EM) tracking system. The procedure was carried out using a laptop computer (2.1GHz Intel Core i7 computer, 8GB RAM, Windows 7 64-bit), an EM Aurora tracking system with a 1.3mm diameter 6 DOF sensor, and 6F (2 mm) brachytherapy catheters inserted through a Syed-Neblett applicator. The 3D Slicer and PLUS open source software were used to develop the system. The mean of the targeting error was less than 2.9mm, which is comparable to the targeting errors in commercial clinical navigation systems. PMID:25076828

Mehrtash, Alireza; Damato, Antonio; Pernelle, Guillaume; Barber, Lauren; Farhat, Nabgha; Viswanathan, Akila; Cormack, Robert; Kapur, Tina

2014-01-01

456

Wavelet restoration of medical pulse-echo ultrasound images in an EM framework.  

PubMed

The clinical utility of pulse-echo ultrasound images is severely limited by inherent poor resolution that impacts negatively on their diagnostic potential. Research into the enhancement of image quality has mostly been concentrated in the areas of blind image restoration and speckle removal, with little regard for accurate modeling of the underlying tissue reflectivity that is imaged. The acoustic response of soft biological tissues has statistics that differ substantially from the natural images considered in mainstream image processing: although, on a macroscopic scale, the overall tissue echogenicity does behave some-what like a natural image and varies piecewise-smoothly, on a microscopic scale, the tissue reflectivity exhibits a pseudo-random texture (manifested in the amplitude image as speckle) due to the dense concentrations of small, weakly scattering particles. Recognizing that this pseudorandom texture is diagnostically important for tissue identification, we propose modeling tissue reflectivity as the product of a piecewise-smooth echogenicity map and a field of uncorrelated, identically distributed random variables. We demonstrate how this model of tissue reflectivity can be exploited in an expectation-maximization (EM) algorithm that simultaneously solves the image restoration problem and the speckle removal problem by iteratively alternating between Wiener filtering (to solve for the tissue reflectivity) and wavelet-based denoising (to solve for the echogenicity map). Our simulation and in vitro results indicate that our EM algorithm is capable of producing restored images that have better image quality and greater fidelity to the true tissue reflectivity than other restoration techniques based on simpler regularizing constraints. PMID:17375824

Ng, James; Prager, Richard; Kingsbury, Nick; Treece, Graham; Gee, Andrew

2007-03-01

457

Investigation of range profiles from buried 3-D object based on the EM simulation.  

PubMed

The 1-D range profiles are suitable features for target identification and target discrimination because they provide discriminative information on the geometry of the target. To resolve features of the buried target, the contribution from individual scattering centers of the buried target in the range profiles need to be identified. Thus, the study of complex scattering mechanisms from which the range profiles are produced is of great importance. In order to clearly establish the relationship between the range profile characteristics and the complicated electromagnetic (EM) scattering mechanisms, such as reflections and diffractions, a buried cuboid possessing straight edges is chosen as the buried target in this paper. By performing an inverse discrete Fourier transform (IDFT) on the wideband backscattered field data computed with an accurate and fast EM method, the 1-D range profiles of the buried cuboid is successfully simulated. The simulated range profiles provide information about the position and scattering strength of the cuboid's scattering centers along the range direction. Meanwhile, a predicted distribution of the scattering centers is quantitatively calculated for the buried cuboid based on the ray path computation. Good agreement has been found between simulated and predicted locations of the range profiles. Validation for amplitudes of the range profiles is further provided in the research. Both the peak amplitudes and locations of the range profiles could be understood and analyzed based on the knowledge of the scattering mechanisms. The formation of the 1-D range profiles has been revealed clearly from the full analysis of the scattering mechanisms and contributions. The problem has been solved for both near and far field regions. Finally, the buried depth and the characteristic size of the object are reasonably deduced from the simulated range profiles. PMID:21716466

He, Siyuan; Zhuang, Lei; Zhang, Fan; Hu, Weidong; Zhu, Guoqiang

2011-06-20

458

Inversion approaches for EM and seismic surveys, based on the exact analytical solutions (Invited)  

NASA Astrophysics Data System (ADS)

A modern underground structure's detection and imaging are based on a large amount of iterations, required by an inversion and extensive use of forward problem solutions. Such solutions are mainly obtained from the available numerical schemes or various approximate analytical methods. A poor performance, inaccuracy and instability are common problems here, which bring many limitations to the inversion. If obtained, the exact analytical solutions are capable to eliminate these problems, also containing near-zone wave-field effects, where the wavelengths are comparable with the offsets and depths. The analytical solutions use Tx-source signature, as well as Rx-data and allow accurate mapping not just the layers' depths, but the whole set of stratified Earth's properties: layer's conductivities for EM; P- and S-velocities, and density for seismic. The high forward modeling speed allows a real-time inversion regime, capable to redirect a survey crew while in the field if needed. The developed inversion approaches combine advantages of the spectrum and time domain processing. The exact solutions reveal inversion limitations, caused by an 'uncertainty principle', similar to quantum physics concept. Validations of these solutions for both EM and seismic are achieved by comparison with the known limit transfers, with quasi-analytics and finite-difference traces. Case studies and comparisons with log data reveal accurate fits of data and theory within measured error corridors. A near-surface 3D locality effect reveals additional opportunities for detection and mapping of shallow caves and tunnels' recognition, non-destructive evaluations, archeological surveys, etc.

Zuev, M. A.; Magomedov, M.

2013-12-01

459

Direct 4D parametric imaging for linearized models of reversibly binding PET tracers using generalized AB-EM reconstruction  

NASA Astrophysics Data System (ADS)

Due to high noise levels in the voxel kinetics, development of reliable parametric imaging algorithms remains one of most active areas in dynamic brain PET imaging, which in the vast majority of cases involves receptor/transporter studies with reversibly binding tracers. As such, the focus of this work has been to develop a novel direct 4D parametric image reconstruction scheme for such tracers. Based on a relative equilibrium (RE) graphical analysis formulation (Zhou et al 2009b Neuroimage 44 661-70), we developed a closed-form 4D EM algorithm to directly reconstruct distribution volume (DV) parametric images within a plasma input model, as well as DV ratio (DVR) images within a reference tissue model scheme (wherein an initial reconstruction was used to estimate the reference tissue time-activity curves). A particular challenge with the direct 4D EM formulation is that the intercept parameters in graphical (linearized) analysis of reversible tracers (e.g. Logan or RE analysis) are commonly negative (unlike for irreversible tracers, e.g. using Patlak analysis). Subsequently, we focused our attention on the AB-EM algorithm, derived by Byrne (1998, Inverse Problems 14 1455-67) to allow inclusion of prior information about the lower (A) and upper (B) bounds for image values. We then generalized this algorithm to the 4D EM framework, thus allowing negative intercept parameters. Furthermore, our 4D AB-EM algorithm incorporated and emphasized the use of spatially varying lower bounds to achieve enhanced performance. As validation, the means of parameters estimated from 55 human 11C-raclopride dynamic PET studies were used for extensive simulations using a mathematical brain phantom. Images were reconstructed using conventional indirect as well as proposed direct parametric imaging methods. Noise versus bias quantitative measurements were performed in various regions of the brain. Direct 4D EM reconstruction resulted in notable qualitative and quantitative accuracy improvements (over 35% noise reduction, with matched bias, in both plasma and reference-tissue input models). Similar improvements were also observed in the coefficient of variation of the estimated DV and DVR values even for relatively low uptake cortical regions, suggesting the enhanced ability for robust parameter estimation. The method was also tested on a 90 min 11C-raclopride patient study performed on the high-resolution research tomograph wherein the proposed method was shown across a variety of regions to outperform the conventional method in the sense that for a given DVR value, improved noise levels were observed.

Rahmim, Arman; Zhou, Yun; Tang, Jing; Lu, Lijun; Sossi, Vesna; Wong, Dean F.

2012-02-01

460

Estudo das tenses em dente restaurado com coroa metalocermica e dois formatos de retentores intra-radiculares - mtodo dos elementos finitos.  

E-print Network

??O estudo comparativo da distribuio de tenses de von Mises em dente endodonticamente tratado, com dois formatos de retentores intra-radiculares, pr-fabricado cilndrico/escalonado e fundido cnico, (more)

Isaac Jos Peixoto Batinga da Rocha

2000-01-01

461

Sntese botton up de nanopartculas magnticas core-shell do tipo ?-Fe2O3@CoFe2O4 visando aplicaes em magneto-hipertermia.  

E-print Network

??Dissertao (mestrado)Universidade de Braslia, Faculdade UnB Planaltina, Programa de Ps-Graduao em Cincia de Materiais, 2013. O interesse pelos nanomateriais ocorre da possibilidade de manipulao de (more)

Cruz, Carlos Jos Domingos da

2013-01-01

462

Unplanned, urgent and emergency care: what are the roles EMS provide for older people with dementia? An integrative review of policy, professional recommendations and evidence  

E-print Network

Objective: To synthesise the existing literature on the roles emergency medical services (EMS) play in unplanned, urgent and emergency care for older people with dementia (OPWD), to define these roles, understand the strength of current research...

Buswell, Marina; Lumbard, Philip; Prothero, Larissa; Lee, Caroline; Martin, Steven; Fleming, Jane; Goodman, Claire

2015-01-01

463

Percepes de estudantes de licenciatura em Cincias Naturais sobre uma unidade didtica acerca da humanizao das cincias com base nos estudos de Gregor Mendel sobre a hereditariedade.  

E-print Network

??Dissertao (mestrado)Universidade de Braslia, Instituto de Cincias Biolgicas, Instituto de Fsica, Instituto de Qumica, Faculdade UnB Planaltina, Programa de Ps-Graduao em Ensino de Cincias, Mestrado (more)

Melo, Juliana Ricarda de

2014-01-01

464

O Prof. Paulo Helene Professor Titular da Universidade de So Paulo, Educador, Pesquisador renomado e respeitado Consultor. Engenheiro Civil, EPUSP. Especialista em "Patologa de las Construcciones", Instituto  

E-print Network

congressos, eventos nacionais e internacionais e em 25 revistas especializadas. Autor de 9 livros publicados no exterior, 3 livros publicados no Brasil e tradutor de outros 3 livros. Orgulha-se de ter formado 43 mestres

Paraná, Universidade Federal do

465

TnE em Congressos XXXIII Reunio Anual da SAB Boletim da Sociedade Astronmica Brasileira (2007) Vol. 27, No.1, p. 234  

E-print Network

) Vol. 27, No.1, p. 234 DESENVOLVIMENTO COMPUTACIONAL PARA OBSERVA??ES ASTRON?MICAS REMOTAS Ana Lúcia da aumentaram sua confiabilidade. O desenvolvimento computacional ­ em código aberto ­ é baseado na linguagem

466

GIO-EMS and International Collaboration in Satellite based Emergency Mapping  

NASA Astrophysics Data System (ADS)

During the last decade, satellite based emergency mapping has developed into a mature operational stage. The European Union's GMES Initial Operations - Emergency Management Service (GIO-EMS), is operational since April 2012. It's set up differs from other mechanisms (for example from the International Charter "Space and Major Disasters"), as it extends fast satellite tasking and delivery with the value adding map production as a single service, which is available, free of charge, to the authorized users of the service. Maps and vector datasets with standard characteristics and formats ranging from post-disaster damage assessment to recovery and disaster prevention are covered by this initiative. Main users of the service are European civil protection authorities and international organizations active in humanitarian aid. All non-sensitive outputs of the service are accessible to the public. The European Commission's in-house science service Joint Research Centre (JRC) is the technical and administrative supervisor of the GIO-EMS. The EC's DG ECHO Monitoring and Information Centre acts as the service's focal point and DG ENTR is responsible for overall service governance. GIO-EMS also aims to contribute to the synergy with similar existing mechanisms at national and international level. The usage of satellite data for emergency mapping has increased during the last years and this trend is expected to continue because of easier accessibility to suitable satellite and other relevant data in the near future. Furthermore, the data and analyses coming from volunteer emergency mapping communities are expected to further enrich the content of such cartographic products. In the case of major disasters the parallel activity of more providers is likely to generate non-optimal use of resources, e.g. unnecessary duplication; whereas coordination may lead to reduced time needed to cover the disaster area. Furthermore the abundant number of geospatial products of different characteristics and quality can become confusing for users. The urgent need for a better coordination has led to establishment of the International Working Group on Satellite Based Emergency Mapping (IWG-SEM). Members of the IWG-SEM, which include JRC, USGS, DLR-ZKI, SERVIR, Sentinel Asia, UNOSAT, UN-SPIDER, GEO, ITHACA and SERTIT have recognized the need to establish the best practice between operational satellite-based emergency mapping programs. The group intends to: work with the appropriate organizations on definition of professional standards for emergency mapping, guidelines for product generation and reviewing relevant technical standards and protocols facilitate communication and collaboration during the major emergencies stimulate coordination of expertise and capacities. The existence of the group and the cooperation among members already brought benefits during recent disasters in Africa and Europe in 2012 in terms of faster and effective satellite data provision and better product generation.

Kucera, Jan; Lemoine, Guido; Broglia, Marco

2013-04-01

467

Avaliao da QoS em redes Ethernet M. Carmo, J. S Silva, E. Monteiro, P. Simes, M. Curado and F. Boavida  

E-print Network

Avaliação da QoS em redes Ethernet M. Carmo, J. Sá Silva, E. Monteiro, P. Simões, M. Curado and F redes Ethernet foi superada com o desenvolvimento das normas IEEE 802.1D e IEEE 802.1Q. Este artigo serviço em redes Ethernet. Os módulos respeitam as normas IEEE 802.1Q/D e implementam as recomendações

Monteiro, Edmundo

468

Representaes Qunticas no Espao de Fases Uma funo de onda abstrata | > um vetor em um espao de Hilbert. Esse vetor pode ser expresso  

E-print Network

espaço de Hilbert. Esse vetor pode ser expresso em termos de uma infinidade de representações ortonormais. Assim nenhuma função das coordenadas (q,p) pode ser definida de forma a ser interpretada como" dado o Princípio da Incerteza. Uma excelente revisão desse formalismo pode ser encontrado em [13,14]. 2

de Aguiar, Marcus A. M.

469

EM-ANIMATE: A Computer Program for Displaying and Animating Electromagnetic Near-Field and Surface-Current Solutions: Video Supplement to NASA Technical Memorandum 4539  

NASA Technical Reports Server (NTRS)

In this video, several examples of electromagnetic field and surface-current animation sequences are shown to demonstrate the visualization capabilities of the EM-ANIMATE computer program. These examples show the animation of total and scattered electric near fields from test bodies of a flat plate, a corner reflector, and a sphere. These test cases show the electric-field behavior caused by different scattering mechanisms through the animation of electromagnetic data from the EM-ANIMATE routine.

Hom, Kam W.

1994-01-01

470

Retinoic acid down-regulates the expression of EmH-3 homeobox-containing gene in the freshwater sponge Ephydatia muelleri  

Microsoft Academic Search

The effects of retinoic acid (RA), a common morphogen and gene expression regulator in vertebrates, were studied in the freshwater sponge Ephydatiamuelleri, both on morphogenesis and on the expression of EmH-3 homeobox-containing gene. At 0.3 ?M, RA had no noticeable influence on sponge development, slightly up-regulating EmH-3 expression. In contrast, in sponges reared in 10, 8 ?M and to a

Elina Nikko; Gisle Van de Vyver; Evelyn Richelle-Maurer

2001-01-01

471

5a. Lista de Exercicios 1. O ponto de ruptura (em libras) de 15 amostras de corda de di^ametro  

E-print Network

o gene de anemia falciforme. (a) Ache a estimativa pontual para a verdadeira propor¸c~ao de in- div´iduos desta subpopula¸c~ao que t^em o gene de anemia falciforme. Al´em disso, apresente o IC de 95% de confian acordo com a OMS, estima-se que 20% dos indiv´iduos desta subpopula¸c~ao carregem o gene de anemia

Lopes Garcia, Nancy

472

Exomethylene-3,4-ethylenedioxythiophene (emEDOT): a new versatile building block for functionalized electropolymerized poly(3,4-ethylenedioxythiophenes) (PEDOTs).  

PubMed

A new versatile thiophene derivative exomethylene-3,4-ethylenedioxythiophene (emEDOT) is introduced. The molecule can be straightforwardly prepared in two steps from commercially available derivatives and enables facile further derivatization through both acid catalyzed additions of alcohols and standard thiol-ene click chemistry. The preparation of electrochromic materials and of an electrochemical avidine sensor is shown by the oxidative polymerizations of several functionalized EDOT monomers straightforwardly prepared from emEDOT. PMID:23795958

Sassi, Mauro; Mascheroni, Luca; Ruffo, Riccardo; Salamone, Matteo M; Pagani, Giorgio A; Mari, Claudio M; D'Orazio, Giuseppe; La Ferla, Barbara; Beverina, Luca

2013-07-19

473

Writing Position Vectors in 3-d Space: A Student Difficulty With Spherical Unit Vectors in Intermediate E&M  

NASA Astrophysics Data System (ADS)

An intermediate E&M course (i.e. based on Griffiths [1]) involves the extensive integration of vector calculus concepts and notation with abstract physics concepts like field and potential. We hope that students take what they have learned in their math courses and apply it to help represent and make sense of the physics. To assess how well students are able to do this integration and application I have developed several simple concept tests on position and unit vectors in non-Cartesian coordinate systems as they are used in intermediate E&M. In this paper I describe one of these concept tests and present results that show both undergraduate physics majors and physics graduate students have difficulty using spherical unit vectors to write position vectors in 3-d space.

Hinrichs, Brant E.

2010-10-01

474

Cryo-EM reveals different coronin binding modes for ADP- and ADP-BeFx actin filaments.  

PubMed

Essential cellular processes involving the actin cytoskeleton are regulated by auxiliary proteins that can sense the nucleotide state of actin. Here we report cryo-EM structures for ADP-bound and ADP-beryllium fluoride (ADP-BeFx, an ADP-Pi mimic)-bound actin filaments in complex with the ?-propeller domain of yeast coronin 1 (crn1), at 8.6- resolution. Our structures reveal the main differences in the interaction of coronin with the two nucleotide states of F-actin. We derived pseudoatomic models by fitting the atomic structures of actin and coronin into the EM envelopes and confirmed the identified interfaces on actin by chemical cross-linking, fluorescence spectroscopy and actin mutagenesis. The models offer a structural explanation for the nucleotide-dependent effects of coronin on cofilin-assisted remodeling of F-actin. PMID:25362487

Ge, Peng; Durer, Zeynep A Oztug; Kudryashov, Dmitri; Zhou, Z Hong; Reisler, Emil

2014-12-01

475

EM reconstruction of dual isotope PET using staggered injections and prompt gamma positron emitters  

SciTech Connect

Purpose: The aim of dual isotope positron emission tomography (DIPET) is to create two separate images of two coinjected PET radiotracers. DIPET shortens the duration of the study, reduces patient discomfort, and produces perfectly coregistered images compared to the case when two radiotracers would be imaged independently (sequential PET studies). Reconstruction of data from such simultaneous acquisition of two PET radiotracers is difficult because positron decay of any isotope creates only 511 keV photons; therefore, the isotopes cannot be differentiated based on the detected energy. Methods: Recently, the authors have proposed a DIPET technique that uses a combination of radiotracer A which is a pure positron emitter (such as{sup 18}F or {sup 11}C) and radiotracer B in which positron decay is accompanied by the emission of a high-energy (HE) prompt gamma (such as {sup 38}K or {sup 60}Cu). Events that are detected as triple coincidences of HE gammas with the corresponding two 511 keV photons allow the authors to identify the lines-of-response (LORs) of isotope B. These LORs are used to separate the two intertwined distributions, using a dedicated image reconstruction algorithm. In this work the authors propose a new version of the DIPET EM-based reconstruction algorithm that allows the authors to include an additional, independent estimate of radiotracer A distribution which may be obtained if radioisotopes are administered using a staggered injections method. In this work the method is tested on simple simulations of static PET acquisitions. Results: The authors experiments performed using Monte-Carlo simulations with static acquisitions demonstrate that the combined method provides better results (crosstalk errors decrease by up to 50%) than the positron-gamma DIPET method or staggered injections alone. Conclusions: The authors demonstrate that the authors new EM algorithm which combines information from triple coincidences with prompt gammas and staggered injections improves the accuracy of DIPET reconstructions for static acquisitions so they reach almost the benchmark level calculated for perfectly separated tracers.

Andreyev, Andriy, E-mail: andriy.andreyev-1@philips.com [Philips Healthcare, Highland Heights, Ohio 44143 (United States)] [Philips Healthcare, Highland Heights, Ohio 44143 (United States); Sitek, Arkadiusz [Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114 (United States)] [Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Boston, Massachusetts 02114 (United States); Celler, Anna [Department of Radiology, University of British Columbia, Vancouver V5Z 1M9 (Canada)] [Department of Radiology, University of British Columbia, Vancouver V5Z 1M9 (Canada)

2014-02-15

476

Two-dimensional Finite Difference Time Domain (FDTD) model of electromagnetic (EM) scattering from a buried rectangular object  

Microsoft Academic Search

A two-dimensional transverse-magnetic (TM) electromagnetic (EM) scattering problem from buried dielectric objects due to a Gaussian pulse is numerically solved using the Finite Difference Time Domain (FD-TD) method with absorbing boundary conditions via Maxwell's equations. The scatterers are rectangular cross sections in a multilayer media; the Gaussian pulse is reflected into a lossy earth by a finite, 450 plate that

Thomas A. Korjack

1995-01-01

477

Caracterizao socio-econmico-cultural de raizeiros e procedimentos ps-colheita de plantas medicinais comercializadas em Macei, AL  

Microsoft Academic Search

RESUMO: Objetivou-se, com este trabalho, estabelecer o perfil scio-econmico-cultural de raizeiros, bem como executar um levantamento dos procedimentos ps-colheita para as plantas medicinais comercializadas em feiras e mercados ao ar livre na cidade de Macei, AL. Foram abordados aspectos sociais, econmicos e culturais de 46 raizeiros, bem como os procedimentos ps-colheita adotados para a conservao das plantas medicinais comercializadas no

Csar de Arajo

478

A system for the 3D reconstruction of retracted-septa PET data using the EM algorithm  

Microsoft Academic Search

We have implemented the EM reconstruction algorithm for volume acquisition from current generation retracted-septa PET scanners. Although the software was designed for a GE Advance scanner, it is easily adaptable to other 3D scanners. The reconstruction software was written for an Intel iPSC\\/860 parallel computer with 128 compute nodes. Running on 32 processors, the algorithm requires approximately 55 minutes per

Calvin A. Johnson; Yuchen Yan; R. E. Carson; R. L. Martino; Margaret E. Daube-Witherspoon

1995-01-01

479

Engineering of cyclodextrin product specificity and pH optima of the thermostable cyclodextrin glycosyltransferase from Thermoanaerobacterium thermosulfurigenes EM1.  

PubMed

The product specificity and pH optimum of the thermostable cyclodextrin glycosyltransferase (CGTase) from Thermoanaerobacterium thermosulfurigenes EM1 was engineered using a combination of x-ray crystallography and site-directed mutagenesis. Previously, a crystal soaking experiment with the Bacillus circulans strain 251 beta-CGTase had revealed a maltononaose inhibitor bound to the enzyme in an extended conformation. An identical experiment with the CGTase from T. thermosulfurigenes EM1 resulted in a 2.6-A resolution x-ray structure of a complex with a maltohexaose inhibitor, bound in a different conformation. We hypothesize that the new maltohexaose conformation is related to the enhanced alpha-cyclodextrin production of the CGTase. The detailed structural information subsequently allowed engineering of the cyclodextrin product specificity of the CGTase from T. thermosulfurigenes EM1 by site-directed mutagenesis. Mutation D371R was aimed at hindering the maltohexaose conformation and resulted in enhanced production of larger size cyclodextrins (beta- and gamma-CD). Mutation D197H was aimed at stabilization of the new maltohexaose conformation and resulted in increased production of alpha-CD. Glu258 is involved in catalysis in CGTases as well as alpha-amylases, and is the proton donor in the first step of the cyclization reaction. Amino acids close to Glu258 in the CGTase from T. thermosulfurigenes EM1 were changed. Phe284 was replaced by Lys and Asn327 by Asp. The mutants showed changes in both the high and low pH slopes of the optimum curve for cyclization and hydrolysis when compared with the wild-type enzyme. This suggests that the pH optimum curve of CGTase is determined only by residue Glu258. PMID:9488711

Wind, R D; Uitdehaag, J C; Buitelaar, R M; Dijkstra, B W; Dijkhuizen, L

1998-03-01

480

On the modeling of planetary plasma environments by a fully kinetic electromagnetic global model HYB-em  

Microsoft Academic Search

We have developed a fully kinetic electromagnetic model to study instabilities and waves in planetary plasma environments. In the particle-in-a-cell (PIC) model both ions and electrons are modeled as particles. An important feature of the developed global kinetic model, called HYB-em, compared to other electromagnetic codes is that it is built up on an earlier quasi-neutral hybrid simulation platform called

V. Pohjola; E. Kallio

2010-01-01

481

The EmsB tandemly repeated multilocus microsatellite: a new tool to investigate genetic diversity of Echinococcus granulosus sensu lato.  

PubMed

Cystic echinococcosis (CE) is a widespread and severe zoonotic disease caused by infection with the larval stage of the eucestode Echinococcus granulosus sensu lato. The polymorphism exhibited by nuclear and mitochondrial markers conventionally used for the genotyping of different parasite species and strains does not reach the level necessary for the identification of genetic variants linked to restricted geographical areas. EmsB is a tandemly repeated multilocus microsatellite that proved its usefulness for the study of genetic polymorphisms within the species E. multilocularis, the causative agent of alveolar echinococcosis. In the present study, EmsB was used to characterize E. granulosus sensu lato samples collected from different host species (sheep, cattle, dromedaries, dogs, and human patients) originating from six different countries (Algeria, Mauritania, Romania, Serbia, Brazil, and the People's Republic of China). The conventional mitochondrial cox1 and nad1 markers identified genotypes G1, G3, G5, G6, and G7, which are clustered into three groups corresponding to the species E. granulosus sensu stricto, E. ortleppi, and E. canadensis. With the same samples, EmsB provided a higher degree of genetic discrimination and identified variations that correlated with the relatively small-scale geographic origins of the samples. In addition, one of the Brazilian single hydatid cysts presented a hybrid genotypic profile that suggested genetic exchanges between E. granulosus sensu stricto and E. ortleppi. In summary, the EmsB microsatellite exhibits an interesting potential for the elaboration of a detailed map of the distribution of genetic variants and therefore for the determination and tracking of the source of CE. PMID:19741078

Maillard, S; Gottstein, B; Haag, K L; Ma, S; Colovic, I; Benchikh-Elfegoun, M C; Knapp, J; Piarroux, R

2009-11-01

482

EM and SM induced degradation dynamics in copper interconnects studied using electron microscopy and X-ray microscopy  

Microsoft Academic Search

In addition to statistically relevant standard reliability tests and lifetime analysis, the study of solid-state physical degradation mechanisms for a limited number of representative samples is needed to understand weaknesses in the interconnect technology and to exclude reliability-related failure in Cu interconnects. We present dynamic studies of damage mechanisms in on-chip Cu interconnects caused by electromigration (EM) and stress migration

Ehrenfried Zschech; Ren Hbner; Oliver Aubel; Paul S. Ho

2010-01-01

483

Binding of the wheat basic leucine zipper protein EmBP-1 to nucleosomal binding sites is modulated by nucleosome positioning.  

PubMed Central

To investigate interactions of the basic leucine zipper transcription factor EmBP-1 with its recognition sites in nucleosomal DNA, we reconstituted an abscisic acid response element and a high-affinity binding site for EmBP-1 into human and wheat nucleosome cores in vitro. DNA binding studies demonstrated that nucleosomal elements can be bound by EmBP-1 at reduced affinities relative to naked DNA. EmBP-1 affinity was lowest when the recognition sites were positioned near the center of the nucleosome. Binding was achieved with a truncated DNA binding domain; however, binding of full-length EmBP-1 caused additional strong DNase I hypersensitivity flanking the binding sites. Similar results were observed with nucleosomes reconstituted with either human or wheat histones, demonstrating a conserved mechanism of transcription factor-nucleosome interactions. We conclude that positioning of recognition sequences on a nucleosome may play an important role in regulating interactions of EmBP-1 with its target sites in plant cells. PMID:8837510

Niu, X; Adams, C C; Workman, J L; Guiltinan, M J

1996-01-01

484

Investigation on High Performance of 10m Semi Anechoic Chamber by using Open-Top Hollow Pyramidal Hybrid EM Wave Absorber  

NASA Astrophysics Data System (ADS)

The emission radiated from electric and electronic equipments is evaluated through OATS. Recently, it is not fully prepared the environment for OATS because of a variety of communication radiation sources (e.g., digital television broadcast and cellular phone station). Therefore, the EM anechoic chambers are becoming more and more important as EMI test site. On the other hand, the EM anechoic chambers are needed high performance in order to cut down EMI countermeasure cost and calculate the antenna factor. The objective of this paper is mainly to present the EM wave absorber design in order to obtain within 2dB against the theoretical site attenuation values in the 10m semi anechoic chamber at 30MHz to 300MHz. We get the necessary reflectivity of EM wave absorber by the basic site attenuation equation. We design the open-top hollow pyramidal new hybrid EM wave absorber consisted of 180cm long dielectric loss foam and ferrite tiles. Then, we design the 10m semi anechoic chamber by using the ray-tracing simulation and construct it in the size of L24mW15.2mH11.2m. More over, we measure the site attenuation of the constructed 10m semi anechoic chamber by using the broadband calculable dipole antennas. As the result, we confirm the validity of the designed open-top hollow pyramidal new hybrid EM wave absorber.

Kurihara, Hiroshi; Saito, Toshifumi; Suzuki, Yoshikazu; Nishikata, Atsuhiro; Hashimoto, Osamu

485

Cryo-EM structure of the Plasmodium falciparum 80S ribosome bound to the anti-protozoan drug emetine  

PubMed Central

Malaria inflicts an enormous burden on global human health. The emergence of parasite resistance to front-line drugs has prompted a renewed focus on the repositioning of clinically approved drugs as potential anti-malarial therapies. Antibiotics that inhibit protein translation are promising candidates for repositioning. We have solved the cryo-EM structure of the cytoplasmic ribosome from the human malaria parasite, Plasmodium falciparum, in complex with emetine at 3.2 resolution. Emetine is an anti-protozoan drug used in the treatment of ameobiasis that also displays potent anti-malarial activity. Emetine interacts with the E-site of the ribosomal small subunit and shares a similar binding site with the antibiotic pactamycin, thereby delivering its therapeutic effect by blocking mRNA/tRNA translocation. As the first cryo-EM structure that visualizes an antibiotic bound to any ribosome at atomic resolution, this establishes cryo-EM as a powerful tool for screening and guiding the design of drugs that target parasite translation machinery. DOI: http://dx.doi.org/10.7554/eLife.03080.001 PMID:24913268

Wong, Wilson; Bai,