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1

Microfluidic Serial Dilution Circuit  

PubMed Central

In vitro evolution of RNA molecules requires a method for executing many consecutive serial dilutions. To solve this problem, a microfluidic circuit has been fabricated in a three-layer glass-PDMS-glass device. The 400-nL serial dilution circuit contains five integrated membrane valves: three two-way valves arranged in a loop to drive cyclic mixing of the diluent and carryover, and two bus valves to control fluidic access to the circuit through input and output channels. By varying the valve placement in the circuit, carryover fractions from 0.04 to 0.2 were obtained. Each dilution process, which is comprised of a diluent flush cycle followed by a mixing cycle, is carried out with no pipeting, and a sample volume of 400 nL is sufficient for conducting an arbitrary number of serial dilutions. Mixing is precisely controlled by changing the cyclic pumping rate, with a minimum mixing time of 22 s. This microfluidic circuit is generally applicable for integrating automated serial dilution and sample preparation in almost any microfluidic architecture. PMID:17073422

Paegel, Brian M.; Grover, William H.; Skelley, Alison M.; Mathies, Richard A.; Joyce, Gerald F.

2008-01-01

2

Serial Dilution & Parts Per Million  

NSDL National Science Digital Library

This activity provides a real world application of the ATEEC Recommended Core Curriculum. This curriculum was identified by ATEEC Fellows as necessary preparation for environmental technology occupation. In this activity, students will experiment with serial dilution and parts per million. At the end of the activity, students will understand how to perform lab procedures, translate real world problems into math relationship, apply ratios and proportions to solve problems, manipulate and substitute variables to solve formulas, and demonstrate safe practices. The activity is appropriate for a high school biology or chemistry class.

2013-11-04

3

Serial dilutions: a new area of research for animal behavior.  

PubMed

This paper attempts to stimulate the psychological investigation of homeopathy and serially agitated dilutions. The history of homeopathy and serial dilutions is provided in a literature review of selected research areas. Two original illustrative experiments are also presented and discussed. The first examined the effect of serially agitated dilutions of Sevin on the mortality rate of honey bees (Apis mellifera). In a second experiment, the effect of serially agitated dilutions of sucrose on proboscis extension in honey bees was assessed. No differences were found between serially agitated dilutions of pesticides and sucrose compared with dilutions alone. Implications, limitations, and proposed further work are discussed. PMID:23234091

Nolf, Sondra L; Craig, David Philip Arthur; Abramson, Charles I

2012-10-01

4

Critical Review and Meta-Analysis of Serial Agitated Dilutions in Experimental Toxicology  

Microsoft Academic Search

1 We conducted an overview and quantitative meta-analysis of all experimental literature on the protective effects of serial agitated dilutions (SADs) of toxin preparations.2 Articles were systematically collected and evaluated for scientific quality using pre-defined methodological criteria and then independently analysed for validity.3 We found 105 publications exploring the effects of SAD preparations in toxicological systems.4 The quality of evidence

Klaus Linde; Wayne B. Jonas; Dieter Melchart; Felege Worku; Hildebert Wagner; Florian Eitel

1994-01-01

5

Detection thresholds for phenyl ethyl alcohol using serial dilutions in different solvents.  

PubMed

Detection thresholds are typically obtained by presenting a subject with serial dilutions of an odorant. Many factors, including the solvent used to dilute the odorant, can influence the measurement of detection thresholds. Differences have been reported in detection thresholds for phenyl ethyl alcohol (PEA) when different solvents are used. In this study we used gas chromatography (GC) to investigate further the effect of solvent on odor detection thresholds. We used a single ascending method and serial dilutions of PEA in four different solvents--liquid paraffin (LP), mineral oil (MO), propylene glycol (PG) and dipropylene glycol (DPG)--to determine the PEA thresholds for 31 adult subjects. For each solvent, we prepared eight serial log base 10 step dilutions (1-8), with corresponding liquid PEA concentrations of 6.3 x 10(1)-6.3 x 10(-6) (% v/v). We found that the threshold concentrations for PEA in LP (step 6.5) and PEA in MO (step 5.5) were significantly lower (P < 0.05) than for PEA in PG (step 4.0) and DPG (step 4.0) We then used GC to measure both the liquid and gas PEA concentrations for the dilution steps prepared with LP and PG. Although there were large threshold differences in the liquid concentrations of PEA in LP and PG, the headspace gas concentrations of PEA were the same. These results demonstrate the importance of determining the gas concentration of odorant stimuli when performing odor threshold measurements, in particular when comparing odor detection thresholds obtained using different solvents. PMID:12502521

Tsukatani, Toshiaki; Miwa, Takaki; Furukawa, Mitsuru; Costanzo, Richard M

2003-01-01

6

EMJH medium with 5-fluorouracil and nalidixic acid associated with serial dilution technique used to recover Leptospira spp from experimentally contaminated bovine semen  

PubMed Central

Bovine semen experimentally contaminated with Leptospira santarosai serovar Guaricura was submitted to the modified EMJH medium with 5-fluorouracil (300mg/L) and nalidixic acid (20mg/L), named as “selective medium” and using the serial dilution technique, in order to evaluate the percentage of recovery of the added microorganism. The selective EMJH medium was found with higher percentage of recovery of leptospiras and minor losses of samples due to contamination with opportunistic microorganisms than the non-selective EMJH medium: 151/376 (40.0%) of positive growth; and 38/376 (10.0%) contamination and 58/376 (15%) and 129/376 (34.0%), respectively. These results were statistically significant (p<0. 0001; Fisher). Differences were found when the frequencies of positive leptospires recovery have been compared in the serial dilution technique (10-1 to 10-4) between the selective and non-selective media at different dilution factors. At 1/10th dilution the percentages found were (0%, 0/80) and (38%, 30/80), at 1/100th dilution, (3%, 2/80) and (49%, 39/ 80) and at 1/1,000th dilution, (25%, 20/80) and (50%, 40/80), respectively. The percentage of recovery of leptospires was found to be directly proportional to the dilution used. The methodology of the serial dilution technique (setting at least three dilutions) and the use of selective EMJH medium have been found to be efficient for the isolation of leptospires from the bovine semen samples. PMID:24031342

Miraglia, Fabiana; de Moraes, Zenaide Maria; Melville, Priscilla Anne; Dias, Ricardo Augusto; Vasconcellos, Silvio Arruda

2009-01-01

7

Differences in Median Ultraviolet Light Transmissions of Serial Homeopathic Dilutions of Copper Sulfate, Hypericum perforatum, and Sulfur  

PubMed Central

Homeopathic remedies are produced by potentising, that is, the serial logarithmic dilution and succussion of a mother tincture. Techniques like ultraviolet spectroscopy, nuclear magnetic resonance, calorimetry, or thermoluminescence have been used to investigate their physical properties. In this study, homeopathic centesimal (c) potencies (6c to 30c) of copper sulfate, Hypericum perforatum, and sulfur as well as succussed water controls were prepared. Samples of these preparations were exposed to external physical factors like heat, pressure, ultraviolet radiation, or electromagnetic fields to mimic possible everyday storage conditions. The median transmissions from 190?nm to 340?nm and 220?nm to 340?nm were determined by ultraviolet light spectroscopy on five measurement days distributed over several months. Transmissions of controls and potencies of sulfur differed significantly on two of five measurement days and after exposure to physical factors. Transmissions of potencies exposed to ultraviolet light and unexposed potencies of copper sulfate and Hypericum perforatum differed significantly. Potency levels 6c to 30c were also compared, and wavelike patterns of higher and lower transmissions were found. The Kruskal-Wallis test yielded significant differences for the potency levels of all three substances. Aiming at understanding the physical properties of homeopathic preparations, this study confirmed and expanded the findings of previous studies. PMID:23401712

Klein, Sabine D.; Sandig, Annegret; Baumgartner, Stephan; Wolf, Ursula

2013-01-01

8

Serial Killers and Serial Rapists  

Microsoft Academic Search

This chapter reviews the typologies for serial murder and serial rape. The aim here is to showcase the principal conceptual\\u000a models that have accounted for these two forms of criminal behavior in the extant literature. Additionally, however, the chapter\\u000a considers where and how the typologies on serial rape and murder could be integrated, especially with respect to offender\\u000a motivations, cognitions,

Stacey L. Shipley; Bruce A. Arrigo

9

Serial Killers  

Microsoft Academic Search

We chose to research and study the effects of nature and nurture on serial killers. In our paper we used numerous examples of serial killers, such as Jeffrey Dahmer and John Wayne Gacy, to add credibility to our research. We researched their childhoods extensively and found ideas that prove both the nature and nurture side of the argument. We found

BrookeAlba; NatalieWittter; LizabethKaeb; AlisonNovakow

2012-01-01

10

Comment on 'Superluminal solitons in a {lambda}-type atomic system with two-folded levels'  

SciTech Connect

We show that the analysis of the optical solitons in a resonant, lifetime-broadened {lambda}-type atomic system with two-folded lower levels, given recently by D. Han et al. [J. Opt. Soc. Am. B 24, 2244 (2007)], is incorrect. Although in the anomalous dispersion regime near resonance one may obtain a superluminal optical soliton, such a soliton suffers serious absorption and hence cannot propagate a significant distance. However, by choosing appropriate system parameters to work in the normal dispersion regime and hence inside the transparency windows of double dark resonance, an ultraslow optical soliton with very low light intensity can form and propagate stably for a fairly long distance.

Hang Chao; Huang Guoxiang [State Key Laboratory of Precision Spectroscopy and Department of Physics, East China Normal University, Shanghai 200062 (China); Luo Bin [Department of Physics and Information Science, Yulin Normal University, Yulin 537000, Guangxi (China)

2008-06-15

11

UltimaSerial  

NSDL National Science Digital Library

UltimaSerial is a Windows based controller for DATAQ Instrument's DI-1xx serial data acquisition device, or WinDaq Starter Kit. It includes access to analog inputs, digital inputs, event counters, various trigger modes, and is backward compatible with the DataqSerial ActiveX control. UltimaSerial comes sample code in a range of languages.

Ultimaserial

2003-10-10

12

Gain-assisted giant Kerr nonlinearity in a {?}-type system with two-folded lower levels  

NASA Astrophysics Data System (ADS)

We propose a four-level ? scheme with a one-mode active Raman gain core and two-folded lower levels to obtain new linear and nonlinear optical responses. We show that this scheme is fundamentally different from that based on electromagnetically induced transparency (EIT). Firstly, it is gain-assisted and thus capable of eliminating all attenuation of probe field. Furthermore, due to the quantum interference effect introduced by a coupling field a gain doublet appears in gain spectrum, and hence the distortion of the probe field during propagation can be effectively avoided. In addition, in such system a large and rapidly responding Kerr nonlinearity can be produced, which is much (more than 10 times) larger than that obtained in the EIT-based scheme with the same energy-level configuration.

Zhu, C. J.; Hang, C.; Huang, G. X.

2010-01-01

13

The serial killer industry  

Microsoft Academic Search

Serial sex killing is developing into the moral panic of the 1990s but unlike previous moral panics about sex crime the activity of serial killing in Britain is very limited and the current concern is probably overstated. American definitions of the problem are becoming too influential and we are moving towards socially constructing a world-wide epidemic of serial killers. A

Keith Soothill

1993-01-01

14

Modern serial killers  

Microsoft Academic Search

The study of serial killing has been dominated by an individualized focus on the aetiology and biography of particular offenders. As such, it has tended to downplay the broader social, historical and cultural context of such acts. This article addresses this lacuna by arguing that serial killers are distinctively modern. It highlights six modern phenomena related to serial killing: (a)

Kevin D. Haggerty

2009-01-01

15

Serials Management with INMAGIC  

Microsoft Academic Search

Serials management for the specialized collection of GAF Chemicals Corporation Library is presented with a discussion of the serials module of INMAGIC. This versatile, flexible, and relatively easy to use package allows for reports generation, effective database maintenance, and improved library operations. The software is an excellent tool for computerization of special library functions.

Melanie C. Sze

1991-01-01

16

Classifying serial killers  

Microsoft Academic Search

We attempted to match the appearance and demeanor of 27 serial killers to the postmortem ‘signatures’ found on their victims’ bodies. Our results suggest that a link may exist between postmortem signatures and two complementary appearance–demeanor types.

Donald I Promish; David Lester

1999-01-01

17

Cataloging Government Online Serials  

Microsoft Academic Search

This workshop describes the U.S. Government Printing Office's (GPO) team-based approach to efficiently identify, catalog, and provide electronic access to online serials published by more than five hundred U.S. Government publishers. Topics include publishing practices of Federal agencies, the process of selecting serials for GPO's Electronic Collection, and requirements for authenticity and textual integrity. Additional topics include GPO's application of

Sally C. Tseng Recorder

2001-01-01

18

Serial floating point formatter  

SciTech Connect

A floating point formatter for changing fixed point serial digital data, such as that received by a seismic data acquisition system, is disclosed wherein fixed point serial digital data is received and scaled to remove any bias added by preamplification. The scaled data is shifted a predetermined number of bits and a resulting exponent is calculated. The shifted data signal and corresponding exponent are combined and further scaled to permit stacking the data without exceeding the system capacity.

Peterson, R. D.; Penner, W. A.

1985-11-12

19

Classifying serial killers.  

PubMed

We attempted to match the appearance and demeanor of 27 serial killers to the postmortem 'signatures' found on their victims' bodies. Our results suggest that a link may exist between postmortem signatures and two complementary appearance-demeanor types. PMID:10643649

Promish, D I; Lester, D

1999-11-01

20

Suicide in serial killers.  

PubMed

In a sample of 248 killers of two victims in America from 1900 to 2005, obtained from an encyclopedia of serial killers by Newton (2006), those completing suicide did not differ in sex, race, or the motive for the killing from those who were arrested. PMID:20402450

Lester, David; White, John

2010-02-01

21

Dilution Confusion: Conventions for Defining a Dilution  

ERIC Educational Resources Information Center

Two conventions for preparing dilutions are used in clinical laboratories. The first convention defines an "a:b" dilution as "a" volumes of solution A plus "b" volumes of solution B. The second convention defines an "a:b" dilution as "a" volumes of solution A diluted into a final volume of "b". Use of the incorrect dilution convention could affect…

Fishel, Laurence A.

2010-01-01

22

Optimal Serial Dilutions Designs for Drug Discovery Experiments  

E-print Network

- and DS-optimality are defined and used to evaluate the precision of estimating the potency of the tested Corresponding author: A. N. Donev. E-mail: a.n.donev@manchester.ac.uk 1 #12;1. Introduction Modern technology to properties of scientific interest, e.g. potency or toxicity in pharmacology. Such studies are common

Sidorov, Nikita

23

Serial murder in institutional settings  

Microsoft Academic Search

This research explored the topic of professional caregivers who commit serial murder in institutional settings. In-depth case studies were created for individuals convicted of serial murder in institutional settings in the United States. The purpose of this research was to identify the characteristics of this group of institutional serialists and compare the current data to existing data on serial killers.

Jennifer D Grine

2003-01-01

24

Delaware's first serial killer.  

PubMed

The violent murder of Shirley Ellis on November 29, 1987, marked the beginning of the strange and terrible tale of Steven Bryan Pennell's reign as the state of Delaware's first convicted serial killer. Three more bodies followed the first victim, and all had been brutally beaten and sadistically tortured. The body of a fifth woman has never been found. State and county police collaborated with the FBI to identify and hunt down their suspect, forming a task force of over 100 officers and spending about one million dollars. Through their knowledge and experience with other serial killers, the FBI was able to make an amazingly accurate psychological profile of Delaware's serial killer. After months of around-the-clock surveillance, Steven Pennell was arrested on November 29, 1988, one year to the day after the first victim was found. Pennell was found guilty in the deaths of the first two victims on November 29, 1989, and plead no contest to the murder of two others on October 30, 1991. Still maintaining his innocence, he asked for the death penalty so that he could spare his family further agony. Steven Pennell was executed by lethal injection on March 15, 1992. PMID:11125664

Inguito, G B; Sekula-Perlman, A; Lynch, M J; Callery, R T

2000-11-01

25

Pulse shape analysis of a two fold clover detector with an EMD based new algorithm: A comparison  

NASA Astrophysics Data System (ADS)

An investigation of Empirical Mode Decomposition (EMD) based noise filtering algorithm has been carried out on a mirror signal from a two fold germanium clover detector. EMD technique can decompose linear as well as nonlinear and chaotic signals with a precise frequency resolution. It allows to decompose the preamplifier signal (charge pulse) on an event-by-event basis. The filtering algorithm provides the information about the Intrinsic Mode Functions (IMFs) mainly dominated by the noise. It preserves the signal information and separates the overriding noise oscillations from the signals. The identification of noise structure is based on the frequency distributions of different IMFs. The preamplifier noise components which distort the azimuthal co-ordinates information have been extracted on the basis of the correlation between the different IMFs and the mirror signal. The correlation studies have been carried out both in frequency and time domain. The extracted correlation coefficient provides an important information regarding the pulse shape of the ?-ray interaction in the detector. A comparison between the EMD based and state-of-the-art wavelet based denoising techniques has also been made and discussed. It has been observed that the fractional noise strength distribution varies with the position of the collimated gamma-ray source. Above trend has been reproduced by both the denoising techniques.

Siwal, Davinder; Mandal, S.; Palit, R.; Sethi, J.; Garg, R.; Saha, S.; Prasad, Awadhesh; Chavan, P. B.; Naidu, B. S.; Jadhav, S.; Donthi, R.; Schaffner, H.; Adamczewski-Musch, J.; Kurz, N.; Wollersheim, H. J.; Singh, R.

2014-03-01

26

Structural differences among subfamilies of EF-hand proteins-A view from the pseudo two-fold symmetry axis.  

PubMed

We have analyzed the conformations of EF-lobes, adjacent pairs of EF-hand domains, in a coordinate system based on the approximate two-fold (z) axis that relates the two EF-hands. Two parameters - dE(ø), the azimuthal angle between the y-axis and the projection of the offset vector to helix E onto the yz-plane, and ?dF(ø), the difference angle between the two helices (F1 and F2) of odd and even domains-characterize the openness of a single EF-hand domain and of an EF-lobe, respectively. We describe and compare values of dE(ø) and of ?dF(ø) for EF-hand proteins of five subfamilies-CTER, CPV, S100, PARV, CALP-in calci- and apo- forms, with and without bound target proteins. Each subfamily has characteristic changes associated with binding calcium and/or target proteins. Proteins 2014; 82:2915-2924. © 2014 Wiley Periodicals, Inc. PMID:24638959

Kawasaki, Hiroshi; Kretsinger, Robert H

2014-11-01

27

First Report on Two-Fold Classification of Plasmodium falciparum Carbonic Anhydrase Inhibitors Using QSAR Modeling Approaches.  

PubMed

Quantitative structure-activity relationship (QSAR)-based classification approach is one of the important chemometric tools in drug discovery process for categorizing the target protein inhibitors into more active and less active classes. In this background, we have presented here a novel approach of two-fold QSAR-based classification modeling for the Plasmodium falciparum carbonic anhydrase (PfCA) inhibitors using 2D-QSAR and linear discriminant analysis (LDA) methods. The logic of applying this concept is to ensure more accurate classification of compounds and to draw some concrete conclusion about structure-activity relations for further work, in absence of 3D-protein structure and lack of sufficient experimental data using the PfCA target. The 2D-QSAR modeling analysis suggested the importance of electrotopological, electronic, extended topochemical atom, and spatial (Jurs) indices for modeling the inhibitory activity against PfCA. The LDA model analysis showed that spatial (Jurs), electrotopological and thermodynamic indices were the discriminating features to differentiate the inhibitors into more active and less active groups. The classification ability of both the models for training and test sets was checked by different qualitative validation parameters such as sensitivity, specificity, accuracy, recall, precision, F-measure and G-means. The classification results revealed that the developed models were significant in classifying the more active inhibitors as compared to the less active inhibitors of both training and test sets. The structural features unveiled from these two models could be utilized for the selection of more active compounds against PfCA in the database screening process. PMID:25163527

Aher, Rahul Balasaheb; Roy, Kunal

2014-11-01

28

Two-fold Unsymmetrical C-H Functionalization of PyrDipSi-Arenes: A General Method For Synthesis of Substituted meta-Halophenols**  

PubMed Central

Two-fold unsymmetrical functionalization of arenes, which includes sequential halogenation/oxygenation reactions, has been developed. This transformation allows for a general and efficient synthesis of substituted meta-halophenols from simple aryl iodides. Importantly, the PyrDipSi (2-diisopropylsilylpyrimidine) group can be easily removed or efficiently converted into valuable functionalities. PMID:24038769

Sarkar, Dhruba; Melkonyan, Ferdinand S.; Gulevich, Anton V.

2013-01-01

29

Thermodynamics of Dilute Solutions.  

ERIC Educational Resources Information Center

Discusses principles and definitions related to the thermodynamics of dilute solutions. Topics considered include dilute solution, Gibbs-Duhem equation, reference systems (pure gases and gaseous mixtures, liquid mixtures, dilute solutions), real dilute solutions (focusing on solute and solvent), terminology, standard states, and reference systems.…

Jancso, Gabor; Fenby, David V.

1983-01-01

30

Debugging Serial and Parallel Codes  

NSDL National Science Digital Library

Introduction to debugger software. Serial debugging of array indexing, arguments mismatch, infinite loops, pointer misuse, and memory allocation. Parallel debugging of process count, shared memory, MPI I/O, collective communications, and OpenMP scope.

Ncsa

31

The Effect of Dilution on the Structure of Microbial Communities  

NASA Technical Reports Server (NTRS)

To determine how dilution of microbial communities affects the diversity of the diluted assemblage a series of numerical simulations were conducted that determined the theoretical change in diversity, richness, and evenness of the community with serial dilution. The results of the simulation suggested that the effects are non linear with a high degree of dependence on the initial evenness of the community being diluted. A series of incubation experiments using a range of dilutions of raw sewage as an inoculum into sterile sewage was used for comparison to the simulations. The diluted communities were maintained in batch fed reactors (three day retention time) for nine days. The communities were harvested and examined by conventional plating and by molecular analysis of the whole-community DNA using AFLP and T-RFLP. Additional, CLPP analysis was also applied. The effects on richness predicted by the numerical simulations were confirmed by the analyses used. The diluted communities fell into three groups, a low dilution, intermediate dilution, and high dilution group, which corresponded well with the groupings obtained for community richness in simulation. The grouping demonstrated the non-linear nature of dilution of whole communities. Furthermore, the results implied that the undiluted community consisted of a few dominant types accompanied by a number of rare (low abundance) types as is typical in unevenly distributed communities.

Mills, Aaron L.

2000-01-01

32

Serial Input Output  

SciTech Connect

Serial Input/Output (SIO) is designed to be a long term storage format of a sophistication somewhere between simple ASCII files and the techniques provided by inter alia Objectivity and Root. The former tend to be low density, information lossy (floating point numbers lose precision) and inflexible. The latter require abstract descriptions of the data with all that that implies in terms of extra complexity. The basic building blocks of SIO are streams, records and blocks. Streams provide the connections between the program and files. The user can define an arbitrary list of streams as required. A given stream must be opened for either reading or writing. SIO does not support read/write streams. If a stream is closed during the execution of a program, it can be reopened in either read or write mode to the same or a different file. Records represent a coherent grouping of data. Records consist of a collection of blocks (see next paragraph). The user can define a variety of records (headers, events, error logs, etc.) and request that any of them be written to any stream. When SIO reads a file, it first decodes the record name and if that record has been defined and unpacking has been requested for it, SIO proceeds to unpack the blocks. Blocks are user provided objects which do the real work of reading/writing the data. The user is responsible for writing the code for these blocks and for identifying these blocks to SIO at run time. To write a collection of blocks, the user must first connect them to a record. The record can then be written to a stream as described above. Note that the same block can be connected to many different records. When SIO reads a record, it scans through the blocks written and calls the corresponding block object (if it has been defined) to decode it. Undefined blocks are skipped. Each of these categories (streams, records and blocks) have some characteristics in common. Every stream, record and block has a name with the condition that each stream, record or block name must be unique in its category (i.e. all streams must have different names, but a stream can have the same name as a record). Each category is an arbitrary length list which is handled by a 'manager' and there is one manager for each category.

Waite, Anthony; /SLAC

2011-09-07

33

Bit-serial neuroprocessor architecture  

NASA Technical Reports Server (NTRS)

A neuroprocessor architecture employs a combination of bit-serial and serial-parallel techniques for implementing the neurons of the neuroprocessor. The neuroprocessor architecture includes a neural module containing a pool of neurons, a global controller, a sigmoid activation ROM look-up-table, a plurality of neuron state registers, and a synaptic weight RAM. The neuroprocessor reduces the number of neurons required to perform the task by time multiplexing groups of neurons from a fixed pool of neurons to achieve the successive hidden layers of a recurrent network topology.

Tawel, Raoul (Inventor)

2001-01-01

34

Venture capitalists and serial entrepreneurs  

Microsoft Academic Search

Habitual entrepreneurship is receiving growing attention, much of which has focused on entrepreneurs who have started more than one venture. This paper examines the importance of habitual entrepreneurs to the venture capital industry, with particular emphasis on those who have exited from an initial investment in the venture capitalist's portfolio, termed serial entrepreneurs. As venture capital markets mature, increasing numbers

Mike Wright; Ken Robbie; Christine Ennew

1997-01-01

35

Serials Control Systems on Microcomputers.  

ERIC Educational Resources Information Center

This paper describes seven commercially available microcomputer serials systems in terms of the following functions: cataloging/title entry, searching, check-in, claims, routing, bindery control, duplicates control, financial control, ordering, subscription renewal/payment, vendor records, reports, technical descriptions, costs, and number of…

Leatherbury, Maurice C.

1984-01-01

36

Inside the mind of the serial murder  

Microsoft Academic Search

This article approaches a position of delving into the thoughts of those who commit murder serially. The information comes\\u000a from a variety of sources which include research literature, theory examination and most importantly, serial murderers themselves.\\u000a More than 400 cases of serial fatal violence as well as interviews with incarcerated serial killers were utilized. Important\\u000a issues such as locus of

Ronald M. Holmes; James De Burger; Stephen T. Holmes

1988-01-01

37

The mathematics of dilution.  

PubMed

The major objection to homeopathic medicine is that the doses of medicine prescribed in some cases are too dilute for any active ingredient to be present. The medicines would hence be rendered inactive, necessitating novel explanations for the action. A further examination of dilution in the light of the Langmuir equation shows that homeopathic medicines may not be as dilute as a simplistic application of Avogadro's Principle suggests, due to surface effects. PMID:24685420

Chatterjee, Barun Kumar

2014-04-01

38

SERIAL KILLER COMMUNIQUÉS: HELPFUL OR HURTFUL  

Microsoft Academic Search

For centuries serial killers have plagued society. These social deviants cunningly meander through communities murdering the most vulnerable: women, children, the homeless, and the elderly. Often, the serial killers avoid capture because they are highly mobile, tend to leave little evidence, and keep their thoughts and deeds to themselves. Occasionally, serial killers communicate with police or the mass media. It

Tomas Guillen

39

The Social Construction of a Serial Killer  

Microsoft Academic Search

Much psychological research examining the serial killer has adopted an essentialist theoretical focus concentrating on the `nature' of the individual who commits the murder. This study, in contrast, aims to analyse the talk of a serial killer using principles taken from discursive psychology. A courtroom transcript concerning the confession to 10 murders by the serial killer, Dennis Rader, was analysed.

Ross Bartels; Ceri Parsons

2009-01-01

40

Criminal Psychological Profiling of Serial Arson Crimes  

Microsoft Academic Search

The practice of criminal psychological profiling is frequently cited as being applicable to serial arson crimes. Despite this claim, there does not appear to be any empirical research that examines serial arson offence behaviors in the context of profiling. This study seeks to develop an empirical model of serial arsonist behaviors that can be systematically associated with probable offender characteristics.

Richard N. Kocsis; Ray W. Cooksey

2002-01-01

41

Serial Killers with Military Experience: Applying Learning Theory to Serial Murder  

Microsoft Academic Search

Scholars have endeavored to study the motivation and causality behind serial murder by researching biological, psychological, and sociological variables. Some of these studies have provided support for the relationship between these variables and serial murder. However, the study of serial murder continues to be an exploratory rather than explanatory research topic. This article examines the possible link between serial killers

Tammy Castle; Christopher Hensley

2002-01-01

42

Unique two-fold interpenetration of 3D microporous 3d-4f heterometal-organic frameworks (HMOF) based on a rigid ligand.  

PubMed

Six heterometal-organic frameworks, {[LnCu1.5(BPDC)3(H2O)2].mH2O}n (Ln = Gd (1, m = 4.75), Tb (2, m = 3.75), Eu (3, m = 5), Ho (4, m = 2), Yb (5, m = 2.25), BPDC = 4,4-dicarboxylate-2,2-dipyridine anion), and {[LuCu1.5(BPDC)3(H2O)1.5].2.5H2O}n (6), have been synthesized under hydrothermal conditions. The structure analyses for 1-6 reveal that the six compounds are isomorphous, belonging to the monoclinic system with space group C2/c, and display two-fold interpenetrating 3D frameworks, which are the first examples of d-f heterometal-organic frameworks based on a rigid ligand. These frameworks were further characterized by elemental analyses, TG analysis, PXRD, hydrogen adsorption and variable-temperature magnetic susceptibilities. Interestingly, hydrogen adsorption was significantly observed under the existence of the two-fold interpenetration. Magnetic investigations suggest that the ferromagnetic coupling exists between Gd3+ and Cu2+ in 1, and that the nature of the interaction between Ln3+ and Cu2+ ions in compounds 2, and 4-6 cannot be absolutely determined when MT values are reduced with decreasing temperature. PMID:19759951

Fang, Ming; Zhao, Bin; Zuo, Ya; Chen, Jun; Shi, Wei; Liang, Jing; Cheng, Peng

2009-10-01

43

A two-fold interpenetrating 3D metal-organic framework material constructed from helical chains linked via 4,4'-H{sub 2}bpz fragments  

SciTech Connect

A 3-connected dia-f-type metal-organic framework compound {l_brace}[Ag(L){sub 3/2}H{sub 2}PO{sub 4}]{r_brace}{sub n} (1) has been synthesized by self-assembly of 4,4'-H{sub 2}bpz (L=4,4'-H{sub 2}bpz=3,3',5,5'-tetramethyl-4,4'-bipyrazole) and Ag{sub 4}P{sub 2}O{sub 7} under hydrothermal conditions. It crystallizes in the tetragonal space group I4{sub 1}/acd with a=21.406(4) A, b=21.406(4) A, c=36.298(8) A, Z=32. X-ray single-crystal diffraction reveals that 1 has a three-dimensional framework with an unprecedented alternate left- and right-handed helices structure, featuring a non-uniform two-fold interpenetrated (4.14{sup 2}) net. Photoluminescent investigation reveals that the title compound displays interesting emissions in a wide region, which shows that the title compound may be a good potential candidate as a photoelectric material. - Graphical abstract: A 3-connected dia-f-type metal-organic framework compound [Ag(4,4'-bpz){sub 3/2}H{sub 2}PO{sub 4}] shows unprecedented alternating left- and right-handed helices structure, featuring a non-uniform two-fold interpenetrated (4.14{sup 2}) net.

Xie Yiming [State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 35002 (China); College of Materials Science and Engineering, Huaqiao University, the Key Laboratory for Functional Materials of Fujian Higher Education, Quanzhou, Fujian 362021 (China); Zhao Zhenguo; Wu Xiaoyuan; Zhang Qisheng; Chen Lijuan; Wang Fei; Chen Shanci [State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 35002 (China); Lu Canzhong [State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 35002 (China)], E-mail: czlu@fjirsm.ac.cn

2008-12-15

44

Measuring Dilution of Microbicide Gels with Optical Imaging  

PubMed Central

We present a novel approach for measuring topical microbicide gel dilution using optical imaging. The approach compares gel thickness measurements from fluorimetry and multiplexed low coherence interferometry in order to calculate dilution of a gel. As a microbicide gel becomes diluted at fixed thickness, its mLCI thickness measurement remains constant, while the fluorimetry signal decreases in intensity. The difference between the two measurements is related to the extent of gel dilution. These two optical modalities are implemented in a single endoscopic instrument that enables simultaneous data collection. A preliminary validation study was performed with in vitro placebo gel measurements taken in a controlled test socket. It was found that change in slope of the regression line between fluorimetry and mLCI based measurements indicates dilution. A dilution calibration curve was then generated by repeating the test socket measurements with serial dilutions of placebo gel with vaginal fluid simulant. This methodology can provide valuable dilution information on candidate microbicide products, which could substantially enhance our understanding of their in vivo functioning. PMID:24340006

Drake, Tyler K.; Shah, Tejen; Peters, Jennifer J.; Wax, Adam; Katz, David F.

2013-01-01

45

Serial murder by healthcare professionals.  

PubMed

The prosecution of Charles Cullen, a nurse who killed at least 40 patients over a 16-year period, highlights the need to better understand the phenomenon of serial murder by healthcare professionals. The authors conducted a LexisNexis search which yielded 90 criminal prosecutions of healthcare providers that met inclusion criteria for serial murder of patients. In addition we reviewed epidemiologic studies, toxicology evidence, and court transcripts, to provide data on healthcare professionals who have been prosecuted between 1970 and 2006. Fifty-four of the 90 have been convicted; 45 for serial murder, four for attempted murder, and five pled guilty to lesser charges. Twenty-four more have been indicted and are either awaiting trial or the outcome has not been published. The other 12 prosecutions had a variety of legal outcomes. Injection was the main method used by healthcare killers followed by suffocation, poisoning, and tampering with equipment. Prosecutions were reported from 20 countries with 40% taking place in the United States. Nursing personnel comprised 86% of the healthcare providers prosecuted; physicians 12%, and 2% were allied health professionals. The number of patient deaths that resulted in a murder conviction is 317 and the number of suspicious patient deaths attributed to the 54 convicted caregivers is 2113. These numbers are disturbing and demand that systemic changes in tracking adverse patient incidents associated with presence of a specific healthcare provider be implemented. Hiring practices must shift away from preventing wrongful discharge or denial of employment lawsuits to protecting patients from employees who kill. PMID:18409454

Yorker, Beatrice Crofts; Kizer, Kenneth W; Lampe, Paula; Forrest, A R W; Lannan, Jacquetta M; Russell, Donna A

2008-01-01

46

The sexually sadistic serial killer.  

PubMed

This article explores characteristics and crime scene behavior of 20 sexually sadistic serial murderers. The pairing of character pathology with paraphilic arousal to the control and degradation of others is examined as it manifests itself in their murders. Commonalities across murders and across murderers are highlighted, i.e., the execution of murders that are well-planned, the use of preselected locations, captivity, a variety of painful sexual acts, sexual bondage, intentional torture, and death by means of strangulation and stabbing. PMID:8914287

Warren, J I; Hazelwood, R R; Dietz, P E

1996-11-01

47

Serial turbo trellis coded modulation using a serially concatenated coder  

NASA Technical Reports Server (NTRS)

Serial concatenated trellis coded modulation (SCTCM) includes an outer coder, an interleaver, a recursive inner coder and a mapping element. The outer coder receives data to be coded and produces outer coded data. The interleaver permutes the outer coded data to produce interleaved data. The recursive inner coder codes the interleaved data to produce inner coded data. The mapping element maps the inner coded data to a symbol. The recursive inner coder has a structure which facilitates iterative decoding of the symbols at a decoder system. The recursive inner coder and the mapping element are selected to maximize the effective free Euclidean distance of a trellis coded modulator formed from the recursive inner coder and the mapping element. The decoder system includes a demodulation unit, an inner SISO (soft-input soft-output) decoder, a deinterleaver, an outer SISO decoder, and an interleaver.

Divsalar, Dariush (Inventor); Dolinar, Samuel J. (Inventor); Pollara, Fabrizio (Inventor)

2010-01-01

48

Analysis of transitions at two-fold redundant sites in mammalian genomes. Transition redundant approach-to-equilibrium (TREx) distance metrics  

PubMed Central

Background The exchange of nucleotides at synonymous sites in a gene encoding a protein is believed to have little impact on the fitness of a host organism. This should be especially true for synonymous transitions, where a pyrimidine nucleotide is replaced by another pyrimidine, or a purine is replaced by another purine. This suggests that transition redundant exchange (TREx) processes at the third position of conserved two-fold codon systems might offer the best approximation for a neutral molecular clock, serving to examine, within coding regions, theories that require neutrality, determine whether transition rate constants differ within genes in a single lineage, and correlate dates of events recorded in genomes with dates in the geological and paleontological records. To date, TREx analysis of the yeast genome has recognized correlated duplications that established a new metabolic strategies in fungi, and supported analyses of functional change in aromatases in pigs. TREx dating has limitations, however. Multiple transitions at synonymous sites may cause equilibration and loss of information. Further, to be useful to correlate events in the genomic record, different genes within a genome must suffer transitions at similar rates. Results A formalism to analyze divergence at two fold redundant codon systems is presented. This formalism exploits two-state approach-to-equilibrium kinetics from chemistry. This formalism captures, in a single equation, the possibility of multiple substitutions at individual sites, avoiding any need to "correct" for these. The formalism also connects specific rate constants for transitions to specific approximations in an underlying evolutionary model, including assumptions that transition rate constants are invariant at different sites, in different genes, in different lineages, and at different times. Therefore, the formalism supports analyses that evaluate these approximations. Transitions at synonymous sites within two-fold redundant coding systems were examined in the mouse, rat, and human genomes. The key metric (f2), the fraction of those sites that holds the same nucleotide, was measured for putative ortholog pairs. A transition redundant exchange (TREx) distance was calculated from f2 for these pairs. Pyrimidine-pyrimidine transitions at these sites occur approximately 14% faster than purine-purine transitions in various lineages. Transition rate constants were similar in different genes within the same lineages; within a set of orthologs, the f2 distribution is only modest overdispersed. No correlation between disparity and overdispersion is observed. In rodents, evidence was found for greater conservation of TREx sites in genes on the X chromosome, accounting for a small part of the overdispersion, however. Conclusion The TREx metric is useful to analyze the history of transition rate constants within these mammals over the past 100 million years. The TREx metric estimates the extent to which silent nucleotide substitutions accumulate in different genes, on different chromosomes, with different compositions, in different lineages, and at different times. PMID:16545144

Li, Tang; Chamberlin, Stephen G; Caraco, M Daniel; Liberles, David A; Gaucher, Eric A; Benner, Steven A

2006-01-01

49

Combustion selective temperature dilution  

SciTech Connect

In a gas turbine engine having a hot gas flowing in an annular path partially defined by inner and outer liners of a combustor and inner and outer vane shrouds, the combustor including at its upstream end injectors for admitting an original mixture of air and fuel to the upstream end of the combustor for burning of the mixture in the combustor, the improvement is described comprising: circumferentially spaced-apart stationary turbine vanes disposed in the hot gas flow path downstream of the combustor; circumferentially spaced-apart dilution apertures disposed in the combustor downstream of the injectors, upstream of the turbine vanes and in axial alignment with leading edges of the turbine vanes, for admitting dilution air into the combustor for mixing with the original mixture to promote partial mixing thereof; and circumferentially spaced dilution apertures for admitting dilution air into the combustor to promote partial mixing with the original mixture. The first and second apertures are axially located in a secondary combustion zone of the combustor and upstream of the turbine vanes to induce partial mixing of the dilution air with the hot gases for generating a preselected circumferential temperature gradient in the hot gas for providing a flow of hot gas at a relatively higher temperature through the gaps and a flow of hot gas at relatively lower temperature upon the turbine vanes.

Vdoviak, J.W.; Weinstein, B.

1988-03-29

50

The Serial Murderer's Motivations: An Interdisciplinary Review.  

ERIC Educational Resources Information Center

Defines serial killer as individual who murders two or more victims over an extended period of time, ranging from days to years, with the crimes often being sexually motivated. Reviews existing motivational theories of serial murder and proposes additional explications from range of disciplines. Presents suggestions for future research and…

DeHart, Dana D.; Mahoney, John M.

1994-01-01

51

Modus operandi of female serial killers.  

PubMed

The modus operandi of female serial killers was examined from a chronology of 58 cases in America and 47 cases in 17 other countries, compiled over 25-year intervals. Female serial killers in other countries accounted for a disproportionately greater number of victims, but those in America managed a longer killing career when associated with a low profile modus operandi. PMID:9621726

Wilson, W; Hilton, T

1998-04-01

52

Serial Order: A Parallel Distributed Processing Approach.  

ERIC Educational Resources Information Center

Human behavior shows a variety of serially ordered action sequences. This paper presents a theory of serial order which describes how sequences of actions might be learned and performed. In this theory, parallel interactions across time (coarticulation) and parallel interactions across space (dual-task interference) are viewed as two aspects of a…

Jordan, Michael I.

53

Bus Serialization for Reducing Power Consumption  

Microsoft Academic Search

yyy Shared-bus chip multiprocessors require buses with long wires. The portion of power consumed in wires relatively increases with device scaling. In this paper, we advocate the use of bus serialization to reduce bus power consumption. Bus serialization decreases the number of wires, and increases the pitch between wires. The wider pitch decreases the coupling capacitances of wires, and consequently

Naoya Hatta; Niko Demus Barli; Chitaka Iwama; Luong Dinh Hung; Daisuke Tashiro; Shuichi Sakai; Hidehiko Tanaka

2006-01-01

54

Serial Cohabitation and the Marital Life Course  

ERIC Educational Resources Information Center

Using cohort data from the National Longitudinal Survey of Youth, this paper tracks the experiences of "serial cohabitors." Results indicate that only a minority of cohabiting women (about 15%-20%) were involved in multiple cohabitations. Serial cohabitations were overrepresented among economically disadvantaged groups, especially those with low…

Lichter, Daniel T.; Qian, Zhenchao

2008-01-01

55

Perception of Serial Order in Infants  

ERIC Educational Resources Information Center

Serial order is fundamental to perception, cognition and behavioral action. Three experiments investigated infants' perception, learning and discrimination of serial order. Four- and 8-month-old infants were habituated to three sequentially moving objects making visible and audible impacts and then were tested on separate test trials for their…

Lewkowicz, David J.

2004-01-01

56

Serials Automation at Kearney State College.  

ERIC Educational Resources Information Center

After updating and revising the manual serials record in June 1973, the serials department of the Kearney State College Library was automated. The functions automated were: (1) citation of index and abstract services, (2) binding notification, (3) indication of publication frequency, (4) compilation of subject lists, and (5) holding statements…

Pitkin, Gary M.

57

Serial killers with military experience: applying learning theory to serial murder.  

PubMed

Scholars have endeavored to study the motivation and causality behind serial murder by researching biological, psychological, and sociological variables. Some of these studies have provided support for the relationship between these variables and serial murder. However, the study of serial murder continues to be an exploratory rather than explanatory research topic. This article examines the possible link between serial killers and military service. Citing previous research using social learning theory for the study of murder, this article explores how potential serial killers learn to reinforce violence, aggression, and murder in military boot camps. As with other variables considered in serial killer research, military experience alone cannot account for all cases of serial murder. Future research should continue to examine this possible link. PMID:12150084

Castle, Tammy; Hensley, Christopher

2002-08-01

58

Serial powering of pixel modules  

NASA Astrophysics Data System (ADS)

Modern pixel detectors for the next generation of high-energy collider experiments like LHC use readout electronics in deep sub-micron technology. Chips in this technology need a low supply voltage of 2-2.5 V alongside high current consumption to achieve the desired performance. The high supply current leads to significant voltage drops in the long and low mass supply cables so that voltage fluctuations at the chips are induced, when the supply current changes. This problem scales with the number of modules when connected in parallel to the power supplies. An alternative powering scheme connects several modules in series resulting in a higher supply voltage but a lower current consumption of the chain and therefore a much lower voltage drop in the cables. In addition the amount of cables needed to supply the detector is vastly reduced. The concept and features of serial powering are presented and studies of the implementation of this technology as an alternative for the ATLAS pixel detector are shown. In particular, it is shown that the potential risk of powering in series can be addressed and eliminated.

Stockmanns, Tobias; Fischer, Peter; Hügging, Fabian; Peric, Ivan; Runolfsson, Ögmundur; Wermes, Norbert

2003-09-01

59

Helium dilution refrigeration system  

DOEpatents

A helium dilution refrigeration system operable over a limited time period, and recyclable for a next period of operation is disclosed. The refrigeration system is compact with a self-contained pumping system and heaters for operation of the system. A mixing chamber contains [sup 3]He and [sup 4]He liquids which are precooled by a coupled container containing [sup 3]He liquid, enabling the phase separation of a [sup 3]He rich liquid phase from a dilute [sup 3]He-[sup 4]He liquid phase which leads to the final stage of a dilution cooling process for obtaining low temperatures. The mixing chamber and a still are coupled by a fluid line and are maintained at substantially the same level with the still cross sectional area being smaller than that of the mixing chamber. This configuration provides maximum cooling power and efficiency by the cooling period ending when the [sup 3]He liquid is depleted from the mixing chamber with the mixing chamber nearly empty of liquid helium, thus avoiding unnecessary and inefficient cooling of a large amount of the dilute [sup 3]He-[sup 4]He liquid phase. 2 figs.

Roach, P.R.; Gray, K.E.

1988-09-13

60

Helium dilution refrigeration system  

DOEpatents

A helium dilution refrigeration system operable over a limited time period, and recyclable for a next period of operation. The refrigeration system is compact with a self-contained pumping system and heaters for operation of the system. A mixing chamber contains .sup.3 He and .sup.4 He liquids which are precooled by a coupled container containing .sup.3 He liquid, enabling the phase separation of a .sup.3 He rich liquid phase from a dilute .sup.3 He-.sup.4 He liquid phase which leads to the final stage of a dilution cooling process for obtaining low temperatures. The mixing chamber and a still are coupled by a fluid line and are maintained at substantially the same level with the still cross sectional area being smaller than that of the mixing chamber. This configuration provides maximum cooling power and efficiency by the cooling period ending when the .sup.3 He liquid is depleted from the mixing chamber with the mixing chamber nearly empty of liquid helium, thus avoiding unnecessary and inefficient cooling of a large amount of the dilute .sup.3 He-.sup.4 He liquid phase.

Roach, Patrick R. (Darien, IL); Gray, Kenneth E. (Naperville, IL)

1988-01-01

61

Balfour and Newton Libraries Periodicals and Serials  

E-print Network

Balfour and Newton Libraries Periodicals and Serials A Abeille. Mémoires d'Entomologie Holdings: v Continued as: Entomologica Fennica Holdings: v. 1 - v. 54 (1947 - 1989) Location: C.53 Newton Wall Acta

62

Monsters Inc.: Serial killers and consumer culture  

Microsoft Academic Search

Serial killing has become big business. Over the past 15 years, popular culture has been flooded by true-life crime stories, biographies, best-selling fiction, video games and television documentaries devoted to this subject. Cinema is the cultural space in which this phenomenon is perhaps most conspicuous. The Internet Movie Database (imdb.com) lists over 1000 films featuring serial killers and most of

Brian Jarvis

2007-01-01

63

The Relationship Between Serial Murder and the American Tourism Industry  

Microsoft Academic Search

Serial murder is a serious national problem, with substantial implications for tourism. In general, serial murder depresses business activity, with one important partial exceptiontourism. The present study analyzes the relationship between serial killing and public travel and tourism associated with such criminal activity. It was found that serial murder is a quantitatively significant criminal conduct, and it is increasing. The

Dirk C. Gibson

2006-01-01

64

Philosophy Dissertation Bibliographies and Citations in Serials Evaluation  

Microsoft Academic Search

Serial and journal collections can be effectively evaluated through citation studies of dissertation bibliographies. The entire run of philosophy dissertations accepted at Purdue University from 1970-1988 was examined for serials and journals listed in their bibliographies. A composite profile of bibliographic support for serials and journals in dissertation research in philosophy at Purdue University was checked against the serial and

Jean-Pierre V M Herubel

1991-01-01

65

Diluted magnetic oxides  

NASA Astrophysics Data System (ADS)

In this review, we review the progress of research on ZnO- and In2O3-based diluted magnetic oxides (DMOs). Firstly, we present the preparation and characterization of DMOs. The former includes the preparation methods and conditions, and the latter includes the characterization techniques for measuring microstructures. Secondly, we introduce the magnetic and transport properties of DMOs, as well as the relationship between them. Thirdly, the origin and mechanism of the ferromagnetism are discussed. Fourthly, we introduce other related work, including computational work and pertinent heterogeneous structures, such as multilayers and magnetic tunnel junctions. Finally, we provide an overview and outlook for DMOs.

Li, XiaoLi; Qi, ShiFei; Jiang, FengXian; Quan, ZhiYong; Xu, XiaoHong

2013-01-01

66

Diluted magnetic semiconductors  

Microsoft Academic Search

Diluted magnetic semiconductors (DMSs), i.e. semiconducting crystals whose lattice is made up in part of substitutional magnetic ions (e.g. Cd1-xMnxTe, Hg1-xFex Se, Zn1-xCoxS), are reviewed. The focus is on materials of the type A1-xII MnxB VI, which are the most thoroughly understood. However, the similarities and differences between these materials and the A1-x IIFexBVI and A1-IICoxBVI systems are discussed wherever

Nitin Samarth; J. K. Furdyna

1990-01-01

67

He dilution refrigerator  

NASA Astrophysics Data System (ADS)

We describe the preparation of ultracold atomic clouds in a dilution refrigerator. The closed-cycle 3He/4He cryostat was custom made to provide optical access for laser cooling, optical manipulation and detection of atoms. We show that the cryostat meets the requirements for cold atom experiments, specifically in terms of operating a magneto-optical trap, magnetic traps and magnetic transport under ultrahigh vacuum conditions. The presented system is a step toward the creation of a quantum hybrid system combining ultracold atoms and solid-state quantum devices.

Jessen, F.; Knufinke, M.; Bell, S. C.; Vergien, P.; Hattermann, H.; Weiss, P.; Rudolph, M.; Reinschmidt, M.; Meyer, K.; Gaber, T.; Cano, D.; Günther, A.; Bernon, S.; Koelle, D.; Kleiner, R.; Fortágh, J.

2014-09-01

68

Analyzing Current Serials in Virginia: An Application of the Ulrich's Serials Analysis System  

ERIC Educational Resources Information Center

VIVA (the Virtual Library of Virginia) was one of the first subscribers to R. R. Bowker's Ulrich's Serials Analysis System (USAS). Creating a database that combined a union report of current serial subscriptions within most academic libraries in the state with the data elements present in Ulrich's made possible a comprehensive analysis designed…

Metz, Paul; Gasser, Sharon

2006-01-01

69

[The serial murder: a few theoretical perspectives].  

PubMed

Despite numbers of publications and effort to try to establish the definition, the classification, the epidemiology, the clinical aspects and the psychopathology of serial killers, a universal consensus seems to say the least. Crime, though reduced in some countries, appears to impact more and more consistent worldwide, generating controversial ideas and a multitude of possible explanations. The serial killer usually presents as a caucasian man, aged between 20 and 40 years, often embedded socially and in his family, but with serious psychiatric, personal and especially family history. Usually acting alone, the serial killer plans a crime well in advance, but sometimes within the scope of impulsivity for a minority, the victim not being previously selected. In the latter case, an actual mental illness like psychosis is found. It is clear from numerous psychopathological studies conducted so far that most serial killers are defined as psychopathic sexual sadists, whose childhood was difficult, if not flouted, punctuated by physical and psychological violence situations. In addition, pervasive fantasies combined with thoughts of death, sex and violence are as much in common with the original acts of which they are the instigators. Beyond a relentless media that is constantly watering the public with stories and pictures depicting them as such, serial killers remain an enigma. We can therefore attempt to answer the various questions raised by this phenomenon, the way these people operate and how we can curb the rise, thanks to the neurobiological and neurophysiological approaches that science offers us. PMID:21834446

Leistedt, S; Linkowski, P

2011-01-01

70

Serial Expression Analysis: a web tool for the analysis of serial gene expression data  

PubMed Central

Serial transcriptomics experiments investigate the dynamics of gene expression changes associated with a quantitative variable such as time or dosage. The statistical analysis of these data implies the study of global and gene-specific expression trends, the identification of significant serial changes, the comparison of expression profiles and the assessment of transcriptional changes in terms of cellular processes. We have created the SEA (Serial Expression Analysis) suite to provide a complete web-based resource for the analysis of serial transcriptomics data. SEA offers five different algorithms based on univariate, multivariate and functional profiling strategies framed within a user-friendly interface and a project-oriented architecture to facilitate the analysis of serial gene expression data sets from different perspectives. SEA is available at sea.bioinfo.cipf.es. PMID:20525784

Nueda, Maria Jose; Carbonell, Jose; Medina, Ignacio; Dopazo, Joaquin; Conesa, Ana

2010-01-01

71

African-Americans and serial homicide  

Microsoft Academic Search

African-Americans are usually over-represented among offenders arrested in “normal” homicide cases, making up a considerably\\u000a larger proportion than would be expected from the Black presence in the population at large. Among serial murderers, however,\\u000a African-Americans are much less in evidence—perhaps one-fifth or less of known American serial killers are Black. It may be\\u000a that African-Americans are in fact less involved

Philip Jenkins

1993-01-01

72

Dilution jet mixing program  

NASA Technical Reports Server (NTRS)

Parametric tests were conducted to quantify the mixing of opposed rows of jets (two-sided injection) in a confined cross flow. Results show that jet penetrations for two sided injections are less than that for single-sided injections, but the jet spreading rates are faster for a given momentum ratio and orifice plate. Flow area convergence generally enhances mixing. Mixing characteristics with asymmetric and symmetric convergence are similar. For constant momentum ratio, the optimum S/H(0) with in-line injections is one half the optimum value for single sided injections. For staggered injections, the optimum S/H(0) is twice the optimum value for single-sided injection. The correlations developed predicted the temperature distributions within first order accuracy and provide a useful tool for predicting jet trajectory and temperature profiles in the dilution zone with two-sided injections.

Srinivasan, R.; Coleman, E.; Johnson, K.

1984-01-01

73

Are Volcanic Gases Serial Killers? Bruno Scaillet*  

E-print Network

Are Volcanic Gases Serial Killers? Bruno Scaillet* Volatiles released by volcanic eruptions scenarios derived from the study of recent basalt outbursts, such as the 1783-1784 Laki eruption in Iceland magma may well be a lower bound. Some researchers have proposed on the basis of calculations that basalt

Paris-Sud XI, Université de

74

[Serial angiofluorography in the operation theater].  

PubMed

Using a 33 cm or 36 cm image amplifier in conjunction with a 100 mm camera, fluoroangiography can be employed as a routine method in theatre too. Serial photography can also be taken in conjunction with an electronic programmes selector while saving film and keeping the dosage as low as possible. PMID:7209306

Maurer, H J

1981-03-01

75

Parallel and Serial Processes in Visual Search  

ERIC Educational Resources Information Center

A long-standing issue in the study of how people acquire visual information centers around the scheduling and deployment of attentional resources: Is the process serial, or is it parallel? A substantial empirical effort has been dedicated to resolving this issue. However, the results remain largely inconclusive because the methodologies that have…

Thornton, Thomas L.; Gilden, David L.

2007-01-01

76

A Serials Holdings List Using UNIX Refer.  

ERIC Educational Resources Information Center

Describes the production of an automated union list of serials holdings at minimal cost by a small consortium of state government libraries in Louisiana. Use of the UNIX Refer system without any modifications for data entry and production is described. (EM)

Boyce, Judith I.; Boyce, Bert R.

1987-01-01

77

Behavioural crime linking in serial homicide  

Microsoft Academic Search

The present study aimed to identify dimensions of variation in serial homicide and to use these dimensions to behaviourally link offences committed by the same offender with each other. The sample consisted of 116 Italian homicides committed by 23 individual offenders. Each offender had committed at least two homicides. As some offenders had worked together and some murders involved more

Pekka Santtila; Tom Pakkanen; Angelo Zappalà; Dario Bosco; Maria Valkama; Andreas Mokros

2008-01-01

78

Isotope dilution mass spectrometry  

NASA Astrophysics Data System (ADS)

In the past isotope dilution mass spectrometry (IDMS) has usually been applied using the formation of positive thermal ions of metals. Especially in calibrating other analytical methods and for the certification of standard reference materials this type of IDMS became a routine method. Today, the progress in this field lies in the determination of ultra trace amounts of elements, e.g. of heavy metals in Antarctic ice and in aerosols in remote areas down to the sub-pg g-1 and sub-pg m-3 levels respectively, in the analysis of uranium and thorium at concentrations of a few pg g-1 in sputter targets for the production of micro- electronic devices or in the determination of sub-picogram amounts of230Th in corals for geochemical age determinations and of226Ra in rock samples. During the last few years negative thermal ionization IDMS has become a frequently used method. The determination of very small amounts of selenium and technetium as well as of other transition metals such as vanadium, chromium, molybdenum and tungsten are important examples in this field. Also the measurement of silicon in connection with a re-determination of Avogadro's number and osmium analyses for geological age determinations by the Re/Os method are of special interest. Inductively-coupled plasma mass spectrometry is increasingly being used for multi-element analyses by the isotope dilution technique. Determinations of heavy metals in samples of marine origin are representative examples for this type of multi-element analysis by IDMS. Gas chromatography-mass spectrometry systems have also been successfully applied after chelation of metals (for example Pt determination in clinical samples) or for the determination of volatile element species in the environment, e.g. dimethyl sulfide. However, IDMS--specially at low concentration levels in the environment--seems likely to be one of the most powerful analytical methods for speciation in the future. This has been shown, up to now, for species of iodine, selenium and some heavy metals in aquatic systems.

Heumann, Klaus G.

1992-09-01

79

Neutral null models for diversity in serial transfer evolution experiments.  

PubMed

Evolution experiments with microorganisms coupled with genome-wide sequencing now allow for the systematic study of population genetic processes under a wide range of conditions. In learning about these processes in natural, sexual populations, neutral models that describe the behavior of diversity and divergence summaries have played a pivotal role. It is therefore natural to ask whether neutral models, suitably modified, could be useful in the context of evolution experiments. Here, we introduce coalescent models for polymorphism and divergence under the most common experimental evolution assay, a serial transfer experiment. This relatively simple setting allows us to address several issues that could affect diversity patterns in evolution experiments, whether selection is operating or not: the transient behavior of neutral polymorphism in an experiment beginning from a single clone, the effects of randomness in the timing of cell division and noisiness in population size in the dilution stage. In our analyses and discussion, we emphasize the implications for experiments aimed at measuring diversity patterns and making inferences about population genetic processes based on these measurements. PMID:24889376

Harpak, Arbel; Sella, Guy

2014-09-01

80

Stress in dilute suspensions  

NASA Technical Reports Server (NTRS)

Generally, two types of theory are used to describe the field equations for suspensions. The so-called postulated equations are based on the kinetic theory of mixtures, which logically should give reasonable equations for solutions. The basis for the use of such theory for suspensions is tenuous, though it at least gives a logical path for mathematical arguments. It has the disadvantage that it leads to a system of equations which is underdetermined, in a sense that can be made precise. On the other hand, the so-called averaging theory starts with a determined system, but the very process of averaging renders the resulting system underdetermined. A third type of theory is proposed in which the kinetic theory of gases is used to motivate continuum equations for the suspended particles. This entails an interpretation of the stress in the particles that is different from the usual one. Classical theory is used to describe the motion of the suspending medium. The result is a determined system for a dilute suspension. Extension of the theory to more concentrated systems is discussed.

Passman, Stephen L.

1989-01-01

81

10 CFR 32.201 - Serialization of nationally tracked sources.  

Code of Federal Regulations, 2010 CFR

10 Energy 1 2010-01-01 2010-01-01...Serialization of nationally tracked sources. 32.201 Section 32.201 Energy NUCLEAR REGULATORY COMMISSION...Serialization of nationally tracked sources. Each licensee who...

2010-01-01

82

Dynamic Control of Serial-batch Processing Systems  

E-print Network

This research explores how near-future information can be used to strategically control a batch processor in a serial-batch processor system setting. Specifically, improved control is attempted by using the upstream serial processor to provide near...

Cerekci, Abdullah

2010-01-14

83

The catathymic crisis: An explanation of the serial killer  

Microsoft Academic Search

Various explanations have been proposed to explain the motivation of serial killers. This article proposes that the theory\\u000a of the Catathymic Crisis is an explanation that adds light to the “serial” nature of serial murder as well as an explanation\\u000a of why and how a person can become a serial killer. The theory of Catathymic Crisis was presented in 1937

Arthur H. Garrison; Senior Criminal Justice Planner

1996-01-01

84

Extinction of diffusion flames burning diluted methane and diluted propane in diluted air  

Microsoft Academic Search

A theoretical and experimental investigation of the extinction limits of counterflow diffusion flames burning methane and propane is outlined. A diffusion flame is stabilized between counterflowing streams of a fuel diluted with nitrogen and air diluted with nitrogen. Extinction limits for such flames were measured over a wide parametric range. Results for methane and propane were found to be in

I.K. Puri; K. Seshadri

1986-01-01

85

Phenomenology and Serial MurderAsking Different Questions  

Microsoft Academic Search

This article discusses the study of motives of serial murderers using the method of empirical phenomenology. Departing from a traditional clinical approach in terms of diagnostic categorizations of serial killers and from a conventional descriptive study in which generic aspects of serial murder such as modus operandi are described and interpreted, a qualitative approach is presented as essential to a

CANDICE A. SKRAPEC

2001-01-01

86

Stochastic modeling of a serial killer  

E-print Network

We analyze the time pattern of the activity of a serial killer, who during twelve years had murdered 53 people. The plot of the cumulative number of murders as a function of time is of "Devil's staircase" type. The distribution of the intervals between murders (step length) follows a power law with the exponent of 1.4. We propose a model according to which the serial killer commits murders when neuronal excitation in his brain exceeds certain threshold. We model this neural activity as a branching process, which in turn is approximated by a random walk. As the distribution of the random walk return times is a power law with the exponent 1.5, the distribution of the inter-murder intervals is thus explained. We confirm analytical results by numerical simulation.

Simkin, M V

2012-01-01

87

Critical characteristics of male serial murderers  

Microsoft Academic Search

Difficulties that have limited research on serial murder (i.e., definition, data, and conceptual framework) are addressed\\u000a by the current study. Rickey’s Trauma-Control Model is utilized as a conceptual framework that is particularly helpful when\\u000a sexual activity is involved. This study provides a rich description of male perpetrator characteristics (criminal history,\\u000a age, and ethnicity), killing career characteristics (number of victims, length

WILLIAM B. ARNDTt; Tammy Hietpas; Juhu Kim

2004-01-01

88

Dilution refrigeration for space applications  

NASA Technical Reports Server (NTRS)

Dilution refrigerators are presently used routinely in ground based applications where temperatures below 0.3 K are required. The operation of a conventional dilution refrigerator depends critically on the presence of gravity. To operate a dilution refrigerator in space many technical difficulties must be overcome. Some of the anticipated difficulties are identified in this paper and possible solutions are described. A single cycle refrigerator is described conceptually that uses forces other than gravity to function and the stringent constraints imposed on the design by requiring the refrigerator to function on the earth without using gravity are elaborated upon.

Israelsson, U. E.; Petrac, D.

1990-01-01

89

Serial reversal learning in bumblebees (Bombus impatiens).  

PubMed

Bumblebees are capable of rapidly learning discriminations, but flexibility in bumblebee learning is less well understood. We tested bumblebees (Bombus impatiens) on a serial reversal learning task. A serial reversal task requires learning of an initial discrimination between two differentially rewarded stimuli, followed by multiple reversals of the reward contingency between stimuli. A reduction in errors with repeated reversals in a serial reversal task is an indicator of behavioural flexibility. Bees were housed in a large indoor environment and tested during foraging flights. Testing free-flying bees allowed for large numbers of trials and reversals. All bees were trained to perform a simultaneous discrimination between two colours for a nectar reward, followed by nine reversals of this discrimination. Results showed that bumblebees reduced errors and improved their performance across successive reversals. A reduction in perseverative errors was the major cause of the improvement in performance. Bees showed a slight increase in error rate in their final trials, perhaps as a consequence of increasing proactive interference, but proactive interference may also have contributed to the overall improvement in performance across reversals. Bumblebees are thus capable of behavioural flexibility comparable to that of other animals and may use proactive interference as a mechanism of behavioural flexibility in varying environments. PMID:24218120

Strang, Caroline G; Sherry, David F

2014-05-01

90

DAVINCI: Dilute Aperture VIsible Nulling Coronagraphic Imager  

NASA Technical Reports Server (NTRS)

This slide presentation gives an overview of DAVINCI (Dilute Aperture VIsible Nulling Coronagraphic Imager). The presentation also includes information about dilute aperture coronagraph, and lyot efficiency.

Shao, Michael; Levine, B. M.; Vasisht, G.; Lane, B. F.; Woodruff, R.; Vasudevan, G.; Samuele, R.; Lloyd, C. A.; Clampin, M.; Lyon, R.; Guyon, O.

2008-01-01

91

EM Immunity Study of Serial Links  

NASA Astrophysics Data System (ADS)

This paper proposes a systematic study of IC immunity for a TX/RX digital system, implemented in a FPGA board. A DPI setup is used to measure the immunity of signal I/O ports to conducted continuous- wave interference. The injection path from RF noise source to input pin is characterized to define the injected power level causing a malfunction on the TX/RX system, up to 250 MHz. The impact of data coding on immunity measurement is analyzed by comparing error rates of Flexray coded data over a standard serial transmission protocol.

Fontana, M.; Rigazio, L.; Canavero, F. G.; Perraud, R.

2012-05-01

92

Bicosomes: bicelles in dilute systems.  

PubMed

Bicelles are discoidal phospholipid nanostructures at high lipid concentrations. Under dilute conditions, bicelles become larger and adopt a variety of morphologies. This work proposes a strategy to preserve the discoidal morphology of bicelles in environments with high water content. Bicelles were formed in concentrated conditions and subsequently encapsulated in liposomes. Later dilution of these new structures, called bicosomes, demonstrated that lipid vesicles were able to isolate and protect bicelles entrapped inside them from the medium. Characterization of systems before and after dilution by dynamic light-scattering spectroscopy and cryo-transmission electron microscopy showed that free bicelles changed in size and morphology, whereas encapsulated bicelles remained unaltered by the effect of dilution. Free and entrapped bicelles (containing the paramagnetic contrast agent gadodiamide) were injected into rat brain lateral ventricles. Coronal and sagittal visualization was performed by magnetic resonance imaging. Whereas rats injected with free bicelles did not survive the surgery, those injected with bicosomes did, and a hyperintensity effect due to gadodiamide was observed in the cerebrospinal fluid. These results indicate that bicosomes are a good means of preserving the morphology of bicelles under dilution conditions. PMID:20643066

Rodríguez, Gelen; Soria, Guadalupe; Coll, Elisenda; Rubio, Laia; Barbosa-Barros, Lucyanna; López-Iglesias, Carmen; Planas, Anna M; Estelrich, Joan; de la Maza, Alfons; López, Olga

2010-07-21

93

Concurrent Cognitive Processes in Rat Serial Pattern Learning: Item Memory, Serial Position, and Pattern Structure  

ERIC Educational Resources Information Center

Three experiments examined the processes mediating rat serial pattern learning for rule-consistent versus rule-violating pattern elements ("violation elements"). In all three experiments, rats were trained to press retractable levers in a circular array in a specific sequence for brain-stimulation reward (BSR). Experiment 1 examined the role of…

Muller, Melissa D.; Fountain, Stephen B.

2010-01-01

94

"Serial" effects in parallel models of reading  

PubMed Central

There is now considerable evidence showing that the time to read a word out loud is influenced by an interaction between orthographic length and lexicality. Given that length effects are interpreted by advocates of dual-route models as evidence of serial processing this would seem to pose a serious challenge to models of single word reading which postulate a common parallel processing mechanism for reading both words and nonwords (Coltheart, Rastle, Perry, Langdon, & Ziegler, 2001; Rastle, Havelka, Wydell, Coltheart, & Besner, 2009). However, an alternative explanation of these data is that visual processes outside the scope of existing parallel models are responsible for generating the word-length related phenomena (Seidenberg & Plaut, 1998). Here we demonstrate that a parallel model of single word reading can account for the differential word-length effects found in the naming latencies of words and nonwords, provided that it includes a mapping from visual to orthographic representations, and that the nature of those orthographic representations are not preconstrained. The model can also simulate other supposedly “serial” effects. The overall findings were consistent with the view that visual processing contributes substantially to the word-length effects in normal reading and provided evidence to support the single-route theory which assumes words and nonwords are processed in parallel by a common mechanism. PMID:22343366

Chang, Ya-Ning; Furber, Steve; Welbourne, Stephen

2012-01-01

95

Breaking the indexing ambiguity in serial crystallography.  

PubMed

In serial crystallography, a very incomplete partial data set is obtained from each diffraction experiment (a `snapshot'). In some space groups, an indexing ambiguity exists which requires that the indexing mode of each snapshot needs to be established with respect to a reference data set. In the absence of such re-indexing information, crystallographers have thus far resorted to a straight merging of all snapshots, yielding a perfectly twinned data set of higher symmetry which is poorly suited for structure solution and refinement. Here, two algorithms have been designed for assembling complete data sets by clustering those snapshots that are indexed in the same way, and they have been tested using 15,445 snapshots from photosystem I [Chapman et al. (2011), Nature (London), 470, 73-77] and with noisy model data. The results of the clustering are unambiguous and enabled the construction of complete data sets in the correct space group P63 instead of (twinned) P6322 that researchers have been forced to use previously in such cases of indexing ambiguity. The algorithms thus extend the applicability and reach of serial crystallography. PMID:24419383

Brehm, Wolfgang; Diederichs, Kay

2014-01-01

96

Galileo - The Serial-Production AIT Challenge  

NASA Technical Reports Server (NTRS)

The Galileo Project is one of the most demanding projects of ESA, being Europe's autarkic navigation system and a constellation composed of 30 satellites. This presentation points out the different phases of the project up to the full operational capability and the corresponding launch options with respect to launch vehicles as well as launch configurations. One of the biggest challenges is to set up a small serial 'production line' for the overall integration and test campaign of satellites. This production line demands an optimization of all relevant tasks, taking into account also backup and recovery actions. A comprehensive AIT concept is required, reflecting a tightly merged facility layout and work flow design. In addition a common data management system is needed to handle all spacecraft related documentation and to have a direct input-out flow for all activities, phases and positions at the same time. Process optimization is a well known field of engineering in all small high tech production lines, nevertheless serial production of satellites are still not the daily task in space business and therefore new concepts have to be put in place. Therefore, and in order to meet the satellites overall system optimization, a thorough interface between unit/subsystem manufacturing and satellite AIT must be realized to ensure a smooth flow and to avoid any process interruption, which would directly lead to a schedule impact.

Ragnit, Ulrike; Brunner, Otto

2008-01-01

97

CMOS serial link for fully duplexed data communication  

NASA Astrophysics Data System (ADS)

This paper describes a CMOS serial link allowing fully duplexed 500 Mbaud serial data communication. The CMOS serial link is a robust and low-cost solution to high data rate requirements. A central charge pump PLL for generating multiphase clocks for oversampling is shared by several serial link channels. Fully duplexed serial data communication is realized in the bidirectional bridge by separating incoming data from the mixed signal on the cable end. The digital PLL accomplishes process-independent data recovery by using a low-ratio oversampling, a majority voting, and a parallel data recovery scheme. Mostly, digital approach could extend its bandwidth further with scaled CMOS technology. A single channel serial link and a charge pump PLL are integrated in a test chip using 1.2 micron CMOS process technology. The test chip confirms upto 500 Mbaud unidirectional mode operation and 320 Mbaud fully duplexed mode operation with pseudo random data patterns.

Lee, Kyeongho; Kim, Sungjoon; Ahn, Gijung; Jeong, Deog-Kyoon

1995-04-01

98

Representation of the serial killer on the Italian Internet.  

PubMed

The representation of serial killers was examined from the analysis of 317 Web pages in the Italian language to study how the psychological profiles of serial killers are described on the Italian Internet. The correspondence analysis of the content of these Web pages shows that in Italy the serial killer is associated with words such as "monster" and "horror," which suggest and imply psychological perversion and aberrant acts. These traits are peculiar for the Italian scenario. PMID:11783573

Villano, P; Bastianoni, P; Melotti, G

2001-10-01

99

Single-chip computer and serial communication of GPRS modem  

NASA Astrophysics Data System (ADS)

Communication between PC and Modem is common, while communication between single-chip computer and Modem is rare. This article will elaborate serial communication between single-chip computer and GPRS modem. The wide use of serial communication will enable various transmission units to connect as one organically and exchange data and information in safe and reliable manner. However, since signal of each transmission channel is different, the serial port in use should be various. Therefore, in order to realize communication among units, it is necessary to involve serial port conversion among each unit.

Li, Baohong

2013-03-01

100

Malignant sex and aggression: an overview of serial sexual homicide.  

PubMed

Serial murderers have attracted considerable attention in the popular press and criminal justice field, but scientific literature about these individuals is limited. This article provides an overview, from a psychiatric perspective, of serial sexual homicide, one type of serial killing. Characteristics of this type of murder and of these offenders are discussed. Defining qualities and diagnoses applicable to serial sexual killers are reviewed. Various etiologic theories are discussed, with emphasis on the role of fantasy and psychodynamic explanations. Governmental agencies involved in combating this type of crime, along with the role of mental health professionals in criminal profiling, are presented. Finally, the authors explore the reaction of society to this phenomenon. PMID:8054674

Myers, W C; Reccoppa, L; Burton, K; McElroy, R

1993-01-01

101

A psychological profile of a serial killer: a case report.  

PubMed

Serial killers have always fascinated society. A serial killer is typically defined as a perpetrator who murders three or more people over a period of time. Most reported cases of serial killers come from the United States and Canada. In India, there are few reported cases. We present, to the best of our knowledge, the first Indian case in the literature. The present case is of a 28-year-old man, Surinder Koli. The Department of Forensic Medicine & Toxicology, All India Institute of Medical Sciences, New Delphi handled the forensic study. We present a most unique psychological investigation into the mind of a serial killer. PMID:23115894

Dogra, T D; Leenaars, Antoon A; Chadha, R K; Manju, Mehta; Lalwani, Sanjeev; Sood, Mamta; Lester, David; Raina, Anupuma; Behera, C

2012-01-01

102

Serial binary interval ratios improve rhythm reproduction  

PubMed Central

Musical rhythm perception is a natural human ability that involves complex cognitive processes. Rhythm refers to the organization of events in time, and musical rhythms have an underlying hierarchical metrical structure. The metrical structure induces the feeling of a beat and the extent to which a rhythm induces the feeling of a beat is referred to as its metrical strength. Binary ratios are the most frequent interval ratio in musical rhythms. Rhythms with hierarchical binary ratios are better discriminated and reproduced than rhythms with hierarchical non-binary ratios. However, it remains unclear whether a superiority of serial binary over non-binary ratios in rhythm perception and reproduction exists. In addition, how different types of serial ratios influence the metrical strength of rhythms remains to be elucidated. The present study investigated serial binary vs. non-binary ratios in a reproduction task. Rhythms formed with exclusively binary (1:2:4:8), non-binary integer (1:3:5:6), and non-integer (1:2.3:5.3:6.4) ratios were examined within a constant meter. The results showed that the 1:2:4:8 rhythm type was more accurately reproduced than the 1:3:5:6 and 1:2.3:5.3:6.4 rhythm types, and the 1:2.3:5.3:6.4 rhythm type was more accurately reproduced than the 1:3:5:6 rhythm type. Further analyses showed that reproduction performance was better predicted by the distribution pattern of event occurrences within an inter-beat interval, than by the coincidence of events with beats, or the magnitude and complexity of interval ratios. Whereas rhythm theories and empirical data emphasize the role of the coincidence of events with beats in determining metrical strength and predicting rhythm performance, the present results suggest that rhythm processing may be better understood when the distribution pattern of event occurrences is taken into account. These results provide new insights into the mechanisms underlining musical rhythm perception. PMID:23964258

Wu, Xiang; Westanmo, Anders; Zhou, Liang; Pan, Junhao

2013-01-01

103

Dilution and the elusive baseline.  

PubMed

Knowledge of baseline conditions is critical for evaluating quantitatively the effect of human activities on environmental conditions, such as the impact of acid deposition. Efforts to restore ecosystems to prior, "pristine" condition require restoration targets, often based on some presumed or unknown baseline condition. Here, we show that rapid and relentless dilution of surface water chemistry is occurring in the White Mountains of New Hampshire, following decades of acid deposition. Extrapolating measured linear trends using a unique data set of up to 47 years, suggest that both precipitation and streamwater chemistry (r(2) >0.84 since 1985) in the Hubbard Brook Experimental Forest (HBEF) will approximate demineralized water within one to three decades. Because such dilute chemistry is unrealistic for surface waters, theoretical baseline compositions have been calculated for precipitation and streamwater: electrical conductivity of 3 and 5 ?S/cm, base cation concentrations of 7 and 39 ?eq/liter, acid-neutralizing capacity values of <1 and 14 ?eq/liter, respectively; and pH 5.5 for both. Significantly large and rapid dilution of surface waters to values even more dilute than proposed for Pre-Industrial Revolution (PIR) conditions has important ecological, biogeochemical and water resource management implications, such as for the success of early reproductive stages of aquatic organisms. PMID:22455659

Likens, Gene E; Buso, Donald C

2012-04-17

104

Primary system boron dilution analysis  

Microsoft Academic Search

The results are presented for an analysis conducted to determine the potential paths through which nonborated water or water with insufficient boron concentration might enter the LOFT primary coolant piping system or reactor vessel to cause dilution of the borated primary coolant water. No attempt was made in the course of this analysis to identify possible design modifications nor to

R. J. Crump; C. J. Naretto; R. A. Borgen; H. C. Rockhold

1978-01-01

105

Resource Dilution or Resource Augmentation?  

E-print Network

Resource Dilution or Resource Augmentation? Number of Siblings, Birth Order, Sex of the Child Augmentation? Number of Siblings, Birth Order, Sex of the Child and Frequency of Mother's Activities" This project extends research on the genesis and effects of individual heterogeneity to cover psychological

Moeller, Ralf

106

Irish Serials in the Boston College Libraries  

NSDL National Science Digital Library

The Boston College Library system has online a searchable database of its noted Irish Serials collection. Researchers can now browse and search the list of over 1,400 newspapers, magazines, and journals that originate from or pertain to Ireland before deciding on whether to take a trip to Boston. The Libraries' holdings "range in date from 1685 to the present and cover Irish history, literature, politics, art, archaeology, economics, genealogy, music, and law." Users can search by title keyword, date range, or microform series. Search returns provide complete holdings information and a legend denoting microfiche or microform series. For example, NIPL denotes the Northern Ireland Political Literature series and IPRN (POST CW REP.) the Post Civil War Republican/Fianna Fail series.

107

40 CFR 1065.240 - Dilution air and diluted exhaust flow meters.  

Code of Federal Regulations, 2010 CFR

...air and diluted exhaust flow meters. 1065.240...AGENCY (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING PROCEDURES...Measurement Instruments Flow-Related Measurements § 1065.240 Dilution air and diluted exhaust...

2010-07-01

108

40 CFR 1065.240 - Dilution air and diluted exhaust flow meters.  

Code of Federal Regulations, 2013 CFR

...air and diluted exhaust flow meters. 1065.240...AGENCY (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING PROCEDURES...Measurement Instruments Flow-Related Measurements § 1065.240 Dilution air and diluted exhaust...

2013-07-01

109

40 CFR 1065.240 - Dilution air and diluted exhaust flow meters.  

Code of Federal Regulations, 2011 CFR

...air and diluted exhaust flow meters. 1065.240...AGENCY (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING PROCEDURES...Measurement Instruments Flow-Related Measurements § 1065.240 Dilution air and diluted exhaust...

2011-07-01

110

40 CFR 1065.240 - Dilution air and diluted exhaust flow meters.  

Code of Federal Regulations, 2012 CFR

...air and diluted exhaust flow meters. 1065.240...AGENCY (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING PROCEDURES...Measurement Instruments Flow-Related Measurements § 1065.240 Dilution air and diluted exhaust...

2012-07-01

111

High efficiency battery management system for serially connected battery string  

Microsoft Academic Search

This article presents an approach for balancing serially connected battery strings with high efficiency energy transferred. The efficiency of this balancing process is accomplished by channeling an excess energy through a DC Link Bus rather than done serially. Using this proposed technique with converter which was 80 percent efficiency, the equalized efficiency of balancing process is increased more than the

C. Karnjanapiboon; Kamon Jirasereeamornkul; Veerapol Monyakul

2009-01-01

112

PDA Serials: Practical and Policy Issues for Librarians  

ERIC Educational Resources Information Center

Personal Digital Assistant serials are not just a subset of electronic serials from an acquisitions/collection development point of view because of their total dependence on patron-owned technology. Even if viewed as a "free" resource there are issues of expense and effort involved in gathering, classifying, and providing access and awareness of…

Good, Stephen

2007-01-01

113

Evolutionary Algorithm Aided Interleaver Design for Serially Concatenated Codes  

Microsoft Academic Search

In this paper, we propose an algorithm for designing the interleavers of Serially Concatenated Codes (SCCs), in order to increase the Minimum Hamming Distance (MHD) between the legitimate permutations of the encoded bit sequence and hence to improve the corresponding error floor. Unlike previous so- called Code Matched Interleaver (CMI) designs, our approach is capable of creating interleavers for serial

R. G. Maunder; L. Hanzo

2011-01-01

114

Regularization in Short-Term Memory for Serial Order  

ERIC Educational Resources Information Center

Previous research has shown that short-term memory for serial order can be influenced by background knowledge concerning regularities of sequential structure. Specifically, it has been shown that recall is superior for sequences that fit well with familiar sequencing constraints. The authors report a corresponding effect pertaining to serial

Botvinick, Matthew; Bylsma, Lauren M.

2005-01-01

115

Antisocial personality disorder, sexual sadism, malignant narcissism, and serial murder.  

PubMed

This paper examines the research on serial murder and its relationship to antisocial personality disorder and sexual sadism. The concept of malignant narcissism is also discussed. Case studies of serial killers are examined regarding the nature of sexual violation and crime scene behavior. PMID:8988574

Geberth, V J; Turco, R N

1997-01-01

116

Predicting Serial Killers' Home Base Using a Decision Support System  

Microsoft Academic Search

The effectiveness of a geographical decision support tool (Dragnet) forlocating the base of serial offenders was compared across 570 modelscomprised of a range of negative exponential functions, buffer zonecomponents, and normalization parameters. The models were applied to thebody disposal locations within each series for 70 U.S. serial killers. Twonormalization parameters were compared for all functions. The test ofeffectiveness was a

David Canter; Toby Coffey; Malcolm Huntley; Christopher Missen

2000-01-01

117

The scene of the crime: inventing the serial killer  

Microsoft Academic Search

This article examines the meanings of the crime scene in serial killings, and the tensions between the real and the imagined in the circulation of those meanings. Starting with the Whitechapel Murders of 1888 it argues that they, as well as forming an origin for the construction of the identity of 'the serial killer', initiate certain ideas about the relationship

Alexandra Warwick

2008-01-01

118

Retrospective Revaluation Effects Following Serial Compound Training and Target Extinction  

ERIC Educational Resources Information Center

Using a conditioned suppression task, two experiments examined retrospective revaluation effects after serial compound training in a release from overshadowing design. In Experiment 1, serial X [right arrow] A+ training produced suppression to target A, which was enhanced when preceded by feature X, whereas X by itself elicited no suppression.…

Effting, Marieke; Vervliet, Bram; Kindt, Merel

2010-01-01

119

The Effect of Concurrent Semantic Categorization on Delayed Serial Recall  

ERIC Educational Resources Information Center

The influence of semantic processing on the serial ordering of items in short-term memory was explored using a novel dual-task paradigm. Participants engaged in 2 picture-judgment tasks while simultaneously performing delayed serial recall. List material varied in the presence of phonological overlap (Experiments 1 and 2) and in semantic content…

Acheson, Daniel J.; MacDonald, Maryellen C.; Postle, Bradley R.

2011-01-01

120

Serial murder in America: case studies of seven offenders  

Microsoft Academic Search

This article summarizes and compares information on seven interviewed serial killers in an ongoing project designed to study similarities and differences among these individuals. The aim of this article is to increase our collective knowledge of the dynamics of serial murder by examining the perpetrators' backgrounds, as well as the unique ways in which they view themselves and the world

James O. Beasley II

2004-01-01

121

Automated serial ECG comparison based on the Minnesota code  

Microsoft Academic Search

The Minnesota code was introduced in 1960, and since then, a number of computer programs have been written for classifying electrocardiograms according to the rules of the code. However, in 1982, extended rules for serial comparison based on the Minnesota code were published. This article presents the details of implementation of automated serial electrocardiographic comparison using the code. Its application

Peter W. Macfarlane; Shahid Latif

1996-01-01

122

Joint Stiffness Identification of Industrial Serial Robots Claire Dumasa  

E-print Network

Joint Stiffness Identification of Industrial Serial Robots Claire Dumasa , St´ephane Caroa , Mehdi a new methodology for the joint stiffness identification of industrial serial robots and as consequence for the evaluation of both translational and rotational displacements of the robot's end-effector subject

Paris-Sud XI, Université de

123

Output Decay in Immediate Serial Recall: Speech Time Revisited  

Microsoft Academic Search

Four experiments reexamined the hypothesis that immediate serial recall is limited by the spoken duration of list items during output. In all the experiments, spoken serial recall was measured for visually presented words of short and long duration. The duration of first- and second-half list items was varied independently. Experiment 1 used the disyllabic words from Lovatt, Avons, and Masterson

Peter Lovatt; S. E Avons; Jackie Masterson

2002-01-01

124

Are Electronic Serials Helping or Hindering Academic Libraries?  

ERIC Educational Resources Information Center

As academic libraries move toward the electronic frontier for their serial subscriptions, there are several issues to be considered. This paper intends to outline the advantages and disadvantages with respect to electronic and paper serials, address selection criteria, and describe our practice in coping with these issues at the Leddy Library of…

Wallenius, Leila I. T.

2007-01-01

125

Serial Magnetization Transfer Imaging in Acute Optic Neuritis  

ERIC Educational Resources Information Center

In serial studies of multiple sclerosis lesions, reductions in magnetization transfer ratio (MTR) are thought to be due to demyelination and axonal loss, with later rises due to remyelination. This study followed serial changes in MTR in acute optic neuritis in combination with clinical and electrophysiological measurements to determine if the MTR…

Hickman, S. J.; Toosy, A. T.; Jones, S. J.; Altmann, D. R.; Miszkiel, K. A.; MacManus, D. G.; Barker, G. J.; Plant, G. T.; Thompson, A. J.; Miller, D.H.

2004-01-01

126

27 CFR 24.260 - Serial numbers or filling date.  

Code of Federal Regulations, 2010 CFR

...24.260 Serial numbers or filling date. Each container larger than four liters...separate series of numbers with letter prefixes...used for containers larger than four liters...may mark containers larger than four liters...of using a serial number or use both a...

2010-04-01

127

The Serial Endosymbiosis Theory: Cellular Origins and Intelligent Design Theory  

Microsoft Academic Search

Even though the origin of cells remains largely unresolved, the serial endosymbiont theory is widely accepted as the means by which two organelles, mitochondria and chloroplasts, came to be. The serial endosymbiont theory hypothesizes that mitochondria and chloroplasts were derived from ancient bacteria that were engulfed by an ancient, nucleated cell and took up residence in the cytoplasm of the

Michael Buratovich

128

Recency and Suffix Effects in Serial Recall of Musical Stimuli  

Microsoft Academic Search

Auditory presentation of verbal items leads to larger recency effects in recall than visual presentation. This enhanced recency can be eliminated if a stimulus suffix (an irrelevant sound) follows the last item. Four experiments tested the hypothesis that recency and suffix effects in serial recall result from a speech-specific process. It was demonstrated that serial recall of musical notes played

Robert L. Greene; Arthur G. Samuel

1986-01-01

129

Based on embedded serial device remote monitoring system  

Microsoft Academic Search

This article draws on domain of common IT remote monitoring of the implementation of the plan. From the application point of view to design a real-time and reliable serial device remote monitoring system, causes not to have the networking function originally and to disperse the regional serial devices is connected in the ethernet, make full use of existing Internet resources

Liu Xiaohu; Huang Yiping; Liu Hailang

2010-01-01

130

A serial section Golgi analysis of the primate claustrum  

Microsoft Academic Search

The cellular composition of the primate claustrum was analyzed using serially sectioned Golgi impregnated neurons. The tissue used in this study was embedded in a soft resin mixture and cut with 25 mm long glass knives. The resin embedding allowed the sections to be cut serially at a thickness of only 3 µm. A camera lucida was employed for drawing

Scott Brand

1981-01-01

131

Indexing Serialized Fiction: May the Force Be with You.  

ERIC Educational Resources Information Center

The adult novel offers indexers an unusual opportunity to create a serialized fiction index. This research paper involved designing and creating a Character Index, Thesaurus, Glossary, and Abstract (with descriptors) for 21 novels based on the "Star Wars" movies. The novels are an unusual example of serialized fiction featuring main characters,…

Barr, Melissa M.

132

Evaluation of a diet dilution technique for measuring the response of broiler chickens to increasing concentrations of lysine  

Microsoft Academic Search

1. Three experiments were conducted on male broiler chickens between one and three weeks of age to determine their response to dietary lysine concentrations.2. Serial dilutions of a summit diet shown to be first?limiting in lysine were fed in all experiments. The balance between amino acids in these diets was maintained within narrow limits.3. Intake of the most?limiting amino acid

R. M. Gous; T. R. Morris

1985-01-01

133

Reconstructing Genealogies of Serial Samples Under the Assumption of a Molecular Clock Using Serial-Sample UPGMA  

Microsoft Academic Search

Reconstruction of evolutionary relationships from noncontemporaneous molecular samples provides a new challenge for phylogenetic reconstruction methods. With recent biotechnological advances there has been an increase in molecular sequencing throughput, and the potential to obtain serial samples of sequences from populations, including rapidly evolving pathogens, is fast being realized. A new method called the serial-sample unweighted pair grouping method with arithmetic

Alexei Drummond; Allen G. Rodrigo

134

Switch for serial or parallel communication networks  

DOEpatents

A communication switch apparatus and a method for use in a geographically extensive serial, parallel or hybrid communication network linking a multi-processor or parallel processing system has a very low software processing overhead in order to accommodate random burst of high density data. Associated with each processor is a communication switch. A data source and a data destination, a sensor suite or robot for example, may also be associated with a switch. The configuration of the switches in the network are coordinated through a master processor node and depends on the operational phase of the multi-processor network: data acquisition, data processing, and data exchange. The master processor node passes information on the state to be assumed by each switch to the processor node associated with the switch. The processor node then operates a series of multi-state switches internal to each communication switch. The communication switch does not parse and interpret communication protocol and message routing information. During a data acquisition phase, the communication switch couples sensors producing data to the processor node associated with the switch, to a downlink destination on the communications network, or to both. It also may couple an uplink data source to its processor node. During the data exchange phase, the switch couples its processor node or an uplink data source to a downlink destination (which may include a processor node or a robot), or couples an uplink source to its processor node and its processor node to a downlink destination. 9 figs.

Crosette, D.B.

1994-07-19

135

Switch for serial or parallel communication networks  

DOEpatents

A communication switch apparatus and a method for use in a geographically extensive serial, parallel or hybrid communication network linking a multi-processor or parallel processing system has a very low software processing overhead in order to accommodate random burst of high density data. Associated with each processor is a communication switch. A data source and a data destination, a sensor suite or robot for example, may also be associated with a switch. The configuration of the switches in the network are coordinated through a master processor node and depends on the operational phase of the multi-processor network: data acquisition, data processing, and data exchange. The master processor node passes information on the state to be assumed by each switch to the processor node associated with the switch. The processor node then operates a series of multi-state switches internal to each communication switch. The communication switch does not parse and interpret communication protocol and message routing information. During a data acquisition phase, the communication switch couples sensors producing data to the processor node associated with the switch, to a downlink destination on the communications network, or to both. It also may couple an uplink data source to its processor node. During the data exchange phase, the switch couples its processor node or an uplink data source to a downlink destination (which may include a processor node or a robot), or couples an uplink source to its processor node and its processor node to a downlink destination.

Crosette, Dario B. (DeSoto, TX)

1994-01-01

136

Charge-coupled-device parallel-to-serial converter  

NASA Technical Reports Server (NTRS)

A CCD parallel-to-serial converter comprising two successions of charge transfer stages, recurrently side-loaded with respective ones of parallelly supplied charge packets, then serially unloaded by time-interleaved respective shift register operations. The charge packets converted to time-division-multiplexed serial form are supplied to a shared electrometer, and the electrometer response is de-multiplexed. Preferably, shift register operations are carried forward concurrently at the same rate, but with the final charge transfer stages clocked in phases staggered in time.

Tower, John R. (Inventor)

1987-01-01

137

Hematological response of immunized and serially bled Japanese quail.  

PubMed

Sexually mature female Japanese quail (Coturnix coturnix japonica) were immunized by an intravenous injection with .5 ml of a 7.5% suspension of Chukar partridge (Alectoris graeca chukar) red blood cells (CRBC). Blood samples were collected either serially from one group of quail or a single time from separate groups of quail at 0 (nonimmunized), 3, 6, and 9 days post-immunization. Total anti-CRBC hemagglutinin titers (HA) were measured by a microhemagglutinin procedure. Selected hematological variables were also measured. Mean HA was not affected by serial blood sampling. Total erythrocyte numbers, percent hematocrit, and hemoglobin levels were depressed in serially bled quail at 3 days postimmunization. Reticulocytosis was found in serially bled quail at 6 days postimmunization. PMID:4048067

Gildersleeve, R P; Thaxton, J P; Galvin, M J; McRee, D I

1985-09-01

138

Serial Echocardiographic Evaluation of 22 Closely Related Great Danes  

E-print Network

Objectives: The purpose of this study was to investigate a family of Great Danes with known dilated cardiomyopathy (DCM) using serial echocardiographic evaluation. Animals, Materials, and Methods: Twenty-two dogs were included in this study...

Farmer, Michael R.

2010-07-14

139

Serially Concatenated Coded Continuous Phase Modulation for Aeronautical Telemetry  

E-print Network

This thesis treats the development of bandwidth-efficient serially concatenated coded (SCC) continuous phase modulation (CPM) techniques for aeronautical telemetry. The concatenated code consists of an inner and an outer code, separated...

Porur Damodaran, Kanagaraj

2008-08-26

140

Efficient Mining Strategy for Frequent Serial Episodes in Temporal Database  

E-print Network

Efficient Mining Strategy for Frequent Serial Episodes in Temporal Database Kuo-Yu Huang and Chia-Li, Taiwan 320 want@db.csie.ncu.edu.tw, chia@csie.ncu.edu.tw Abstract. Discovering patterns with great

Chang, Chia-Hui

141

Pathological narcissism and serial homicide: Review and case study  

Microsoft Academic Search

Serial homicide, as a psychopathological condition, has been described as long ago as 1886. The traits and characteristics\\u000a of serial murderers are varied, as are the theories that attempt to explain their motivation. Theorists have emphasized, for\\u000a example, traumatic events in early life, sexual disturbance and dynamics, and neurobiological abnormalities. In the past fifteen\\u000a years, as narcissistic disturbance in general

Louis B. Schlesinger

1998-01-01

142

Long term repetition effects during massed, serial, and random practice  

E-print Network

LONG TERM REPETITION EFFECTS DURING MASSED, SERIAL, AND RANDOM PRACTICE A Thesis by MARIANNE ELIZABETH GOEN Submitted to Texas A8cM University in partial fulfillment of the requirements for the degree of MASTER OF SCIENCE Approved... as to style and content by: 'd Wright (Ch of Committee) rgia Frey (Member) ck Nation ember) Jack Wilmore ead of Department) December 1998 Major Subject: Kinesiology ABSTRACT Long Term Repetition Effects During Massed, Serial, and Random Practice...

Goen, Marianne Elizabeth

2012-06-07

143

Dilution in single pass arc welds  

SciTech Connect

A study was conducted on dilution of single pass arc welds of type 308 stainless steel filler metal deposited onto A36 carbon steel by the plasma arc welding (PAW), gas tungsten arc welding (GTAW), gas metal arc welding (GMAW), and submerged arc welding (SAW) processes. Knowledge of the arc and melting efficiency was used in a simple energy balance to develop an expression for dilution as a function of welding variables and thermophysical properties of the filler metal and substrate. Comparison of calculated and experimentally determined dilution values shows the approach provides reasonable predictions of dilution when the melting efficiency can be accurately predicted. The conditions under which such accuracy is obtained are discussed. A diagram is developed from the dilution equation which readily reveals the effect of processing parameters on dilution to aid in parameter optimization.

DuPont, J.N.; Marder, A.R. [Lehigh Univ., Bethlehem, PA (United States). Dept. of Materials Science and Engineering

1996-06-01

144

A compact rotating dilution refrigerator.  

PubMed

We describe the design and performance of a new rotating dilution refrigerator that will primarily be used for investigating the dynamics of quantized vortices in superfluid (4)He. All equipment required to operate the refrigerator and perform experimental measurements is mounted on two synchronously driven, but mechanically decoupled, rotating carousels. The design allows for relative simplicity of operation and maintenance and occupies a minimal amount of space in the laboratory. Only two connections between the laboratory and rotating frames are required for the transmission of electrical power and helium gas recovery. Measurements on the stability of rotation show that rotation is smooth to around 10(-3) rad s(-1) up to angular velocities in excess of 2.5 rad s(-1). The behavior of a high-Q mechanical resonator during rapid changes in rotation has also been investigated. PMID:24182127

Fear, M J; Walmsley, P M; Chorlton, D A; Zmeev, D E; Gillott, S J; Sellers, M C; Richardson, P P; Agrawal, H; Batey, G; Golov, A I

2013-10-01

145

A compact rotating dilution refrigerator  

NASA Astrophysics Data System (ADS)

We describe the design and performance of a new rotating dilution refrigerator that will primarily be used for investigating the dynamics of quantized vortices in superfluid 4He. All equipment required to operate the refrigerator and perform experimental measurements is mounted on two synchronously driven, but mechanically decoupled, rotating carousels. The design allows for relative simplicity of operation and maintenance and occupies a minimal amount of space in the laboratory. Only two connections between the laboratory and rotating frames are required for the transmission of electrical power and helium gas recovery. Measurements on the stability of rotation show that rotation is smooth to around 10-3 rad s-1 up to angular velocities in excess of 2.5 rad s-1. The behavior of a high-Q mechanical resonator during rapid changes in rotation has also been investigated.

Fear, M. J.; Walmsley, P. M.; Chorlton, D. A.; Zmeev, D. E.; Gillott, S. J.; Sellers, M. C.; Richardson, P. P.; Agrawal, H.; Batey, G.; Golov, A. I.

2013-10-01

146

IFLA General Conference, 1986. Collections and Services Division. Section: Serial Publications. Papers.  

ERIC Educational Resources Information Center

Papers on serial publications presented at the 1986 International Federation of Library Associations (IFLA) conference include: (1) "Scenario for Microcomputer-Based Serials Cataloging from ISDS (International Serials Data System) Records--New Horizons for Serial Librarianship in the Developing Countries by the Availability of Adequate Hardware,…

International Federation of Library Associations and Institutions, The Hague (Netherlands).

147

Short-Term Memory for Serial Order: A Recurrent Neural Network Model Matthew M. Botvinick  

E-print Network

Short-Term Memory for Serial Order: A Recurrent Neural Network Model Matthew M. Botvinick, the mechanisms underlying short-term or working memory for serial order remain uncertain. Recent theoretical for understanding short-term memory for serial order. Keywords: working memory, short-term memory, serial order

Plaut, David C.

148

Starting from Scratch: The Decisions, Policies, and Procedures behind Central Piedmont Community College Libraries' Serials Module  

ERIC Educational Resources Information Center

The Central Piedmont Community College Libraries moved from a separately maintained periodicals holdings list to a fully-integrated serials module. Establishing the serials module from scratch required the library to make a series of interrelated decisions beyond the realm of serials management and control. The implications of the serials module…

Arnold, Jennifer

2004-01-01

149

Hardware Implementation of Serially Concatenated PPM Decoder  

NASA Technical Reports Server (NTRS)

A prototype decoder for a serially concatenated pulse position modulation (SCPPM) code has been implemented in a field-programmable gate array (FPGA). At the time of this reporting, this is the first known hardware SCPPM decoder. The SCPPM coding scheme, conceived for free-space optical communications with both deep-space and terrestrial applications in mind, is an improvement of several dB over the conventional Reed-Solomon PPM scheme. The design of the FPGA SCPPM decoder is based on a turbo decoding algorithm that requires relatively low computational complexity while delivering error-rate performance within approximately 1 dB of channel capacity. The SCPPM encoder consists of an outer convolutional encoder, an interleaver, an accumulator, and an inner modulation encoder (more precisely, a mapping of bits to PPM symbols). Each code is describable by a trellis (a finite directed graph). The SCPPM decoder consists of an inner soft-in-soft-out (SISO) module, a de-interleaver, an outer SISO module, and an interleaver connected in a loop (see figure). Each SISO module applies the Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm to compute a-posteriori bit log-likelihood ratios (LLRs) from apriori LLRs by traversing the code trellis in forward and backward directions. The SISO modules iteratively refine the LLRs by passing the estimates between one another much like the working of a turbine engine. Extrinsic information (the difference between the a-posteriori and a-priori LLRs) is exchanged rather than the a-posteriori LLRs to minimize undesired feedback. All computations are performed in the logarithmic domain, wherein multiplications are translated into additions, thereby reducing complexity and sensitivity to fixed-point implementation roundoff errors. To lower the required memory for storing channel likelihood data and the amounts of data transfer between the decoder and the receiver, one can discard the majority of channel likelihoods, using only the remainder in operation of the decoder. This is accomplished in the receiver by transmitting only a subset consisting of the likelihoods that correspond to time slots containing the largest numbers of observed photons during each PPM symbol period. The assumed number of observed photons in the remaining time slots is set to the mean of a noise slot. In low background noise, the selection of a small subset in this manner results in only negligible loss. Other features of the decoder design to reduce complexity and increase speed include (1) quantization of metrics in an efficient procedure chosen to incur no more than a small performance loss and (2) the use of the max-star function that allows sum of exponentials to be computed by simple operations that involve only an addition, a subtraction, and a table lookup. Another prominent feature of the design is a provision for access to interleaver and de-interleaver memory in a single clock cycle, eliminating the multiple clock-cycle latency characteristic of prior interleaver and de-interleaver designs.

Moision, Bruce; Hamkins, Jon; Barsoum, Maged; Cheng, Michael; Nakashima, Michael

2009-01-01

150

The relationship between serial sexual murder and autoerotic asphyxiation.  

PubMed

This case series documents and examines the association between autoerotic asphyxiation, sadomasochism, and serial sexual murderers. Autoerotic asphyxiation, along with other paraphilias found in this population, is reviewed. Five cases of serial sexual killers who engaged in autoerotic asphyxiation were identified worldwide: four from the United States and one from Russia. Case reports for each are provided. All (100%) were found to have sexual sadism in addition to autoerotic asphyxiation. Furthermore, two (40%) had bondage fetishism, and two (40%) had transvestic fetishism, consistent with these paraphilias co-occurring in those with autoerotic asphyxiation. Overall the group averaged 4.0 lifetime paraphilias. Some possible relationships were observed between the offenders' paraphilic orientation and their modus operandi, e.g., all of these serial killers strangled victims-suggesting an association between their sadistic and asphyxiative paraphilic interests. The overlap of seemingly polar opposite paraphilias in this sample--sexual sadism and autoerotic asphyxiation--is explored from a historical and clinical perspective. Multiple commonalities shared between these five offenders and serial sexual murderers in general are addressed. A primary limitation of this study is its small sample size and empirical basis; the results may not be generalizable beyond the sample. The findings from this study support the supposition that crime scene behaviors often reflect paraphilic disturbances in those who commit serial sexual homicides. PMID:17980531

Myers, Wade C; Bukhanovskiy, Alexandr; Justen, Elle; Morton, Robert J; Tilley, John; Adams, Kenneth; Vandagriff, Virgil L; Hazelwood, Robert R

2008-04-01

151

Genetic programming and serial processing for time series classification.  

PubMed

This work describes an approach devised by the authors for time series classification. In our approach genetic programming is used in combination with a serial processing of data, where the last output is the result of the classification. The use of genetic programming for classification, although still a field where more research in needed, is not new. However, the application of genetic programming to classification tasks is normally done by considering the input data as a feature vector. That is, to the best of our knowledge, there are not examples in the genetic programming literature of approaches where the time series data are processed serially and the last output is considered as the classification result. The serial processing approach presented here fills a gap in the existing literature. This approach was tested in three different problems. Two of them are real world problems whose data were gathered for online or conference competitions. As there are published results of these two problems this gives us the chance to compare the performance of our approach against top performing methods. The serial processing of data in combination with genetic programming obtained competitive results in both competitions, showing its potential for solving time series classification problems. The main advantage of our serial processing approach is that it can easily handle very large datasets. PMID:24032750

Alfaro-Cid, Eva; Sharman, Ken; Esparcia-Alcázar, Anna I

2014-01-01

152

EPS dilution after SEOs and earnings management  

Microsoft Academic Search

Purpose – Firms are concerned about earnings per share (EPS) dilution after equity issues. The purpose of this paper is to investigate whether firms manage upward their discretionary accruals around seasoned equity offerings (SEOs) to mitigate the impact of dilution on reported earnings. Design\\/methodology\\/approach – The authors employ adjusted discretionary accruals from cash flow statements, normalized by the average common

Hui Di; Dalia Marciukaityte; Eugenie A. Goodwin

2012-01-01

153

Serial Fetal MRI for the Diagnosis of Aicardi Syndrome  

PubMed Central

Summary Aicardi syndrome (AS) is defined by the triad of corpus callosum agenesis, chorioretinal “lacunae” and infantile spasms. Additional neuroimaging findings including migrational abnormalities are common. We report on serial neuroimaging findings of a female fetus with ventriculomegaly, corpus callosum agenesis and focal migrational abnormalities, suggestive of AS. Postnatal neuroimaging follow-up as well as ophthalmological evaluation and occurrence of infantile spasms confirmed the prenatally suspected diagnosis of AS. This case points out the key role of serial fetal magnetic resonance imaging (MRI) in detecting the full spectrum of pathologies associated with fetal ventriculomegaly. The associated neuroimaging findings may go undetected on prenatal ultrasound, but are important in terms of diagnosis and counseling of the parents. Additionally, this case emphasizes the importance of serial fetal MRI studies to more accurately delineate the progression of findings during brain development. PMID:24007726

Hergan, B.; Atar, O.D.; Poretti, A.; Huisman, T.A.G.M.

2013-01-01

154

Serial fetal MRI for the diagnosis of Aicardi syndrome.  

PubMed

Aicardi syndrome (AS) is defined by the triad of corpus callosum agenesis, chorioretinal "lacunae" and infantile spasms. Additional neuroimaging findings including migrational abnormalities are common. We report on serial neuroimaging findings of a female fetus with ventriculomegaly, corpus callosum agenesis and focal migrational abnormalities, suggestive of AS. Postnatal neuroimaging follow-up as well as ophthalmological evaluation and occurrence of infantile spasms confirmed the prenatally suspected diagnosis of AS. This case points out the key role of serial fetal magnetic resonance imaging (MRI) in detecting the full spectrum of pathologies associated with fetal ventriculomegaly. The associated neuroimaging findings may go undetected on prenatal ultrasound, but are important in terms of diagnosis and counseling of the parents. Additionally, this case emphasizes the importance of serial fetal MRI studies to more accurately delineate the progression of findings during brain development. PMID:24007726

Hergan, B; Atar, O D; Poretti, A; Huisman, T A G M

2013-08-01

155

A combination strategy for tracking the serial criminal  

NASA Astrophysics Data System (ADS)

We build a Geographic Profiling Model to generate the criminal's geographical profile, by combining two complementary strategies: the Spatial Distribution Strategy and the Probability Distance Strategy. In the first strategy, we designate the mean of all the known crime sites as the anchor point, and build a Standard Deviational Ellipse Model, considering the effect of landscape. In the second strategy, we take many factors such as the buffer zone and distance decay theory into consideration and calculate the probability of the offender's residence in a certain area by using the Bayesian Theorem and the Rossmo Algorithm. Then, we combine the result of two strategies and get three search areas suit different conditions of the police to track the serial criminal. Apply the model to the English serial killer Peter Sutcliffe's case, the calculation result shows that the model can effectively be used to track serial criminal.

He, Chuan; Zhang, Yuan-Biao; Wan, Jiadi; Yu, Wenjing

2010-08-01

156

Serial murder in America: case studies of seven offenders.  

PubMed

This article summarizes and compares information on seven interviewed serial killers in an ongoing project designed to study similarities and differences among these individuals. The aim of this article is to increase our collective knowledge of the dynamics of serial murder by examining the perpetrators' backgrounds, as well as the unique ways in which they view themselves and the world around them. Although qualitative interview research alone is not sufficient to fully understand such behavior, it is useful in many ways. Some of the information discussed based on the seven offenders interviewed is compared with broader epidemiological studies, and the strengths and limitations of each type of research are discussed. PMID:15211559

Beasley, James O

2004-01-01

157

21 CFR 864.5240 - Automated blood cell diluting apparatus.  

Code of Federal Regulations, 2010 CFR

...2010-04-01 false Automated blood cell diluting apparatus. 864.5240 Section...Devices § 864.5240 Automated blood cell diluting apparatus. (a) Identification. An automated blood cell diluting apparatus is a fully...

2010-04-01

158

21 CFR 864.5240 - Automated blood cell diluting apparatus.  

Code of Federal Regulations, 2013 CFR

...2013-04-01 false Automated blood cell diluting apparatus. 864.5240 Section...Devices § 864.5240 Automated blood cell diluting apparatus. (a) Identification. An automated blood cell diluting apparatus is a fully...

2013-04-01

159

40 CFR 1065.667 - Dilution air background emission correction.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Dilution air background emission correction...AGENCY (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING PROCEDURES...1065.667 Dilution air background emission correction...first determine the total flow of dilution air, n...

2011-07-01

160

40 CFR 1065.667 - Dilution air background emission correction.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Dilution air background emission correction...AGENCY (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING PROCEDURES...1065.667 Dilution air background emission correction...first determine the total flow of dilution air, n...

2010-07-01

161

40 CFR 1065.667 - Dilution air background emission correction.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Dilution air background emission correction...AGENCY (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING PROCEDURES...1065.667 Dilution air background emission correction...first determine the total flow of dilution air, n...

2012-07-01

162

40 CFR 1065.667 - Dilution air background emission correction.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Dilution air background emission correction...AGENCY (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING PROCEDURES...1065.667 Dilution air background emission correction...first determine the total flow of dilution air, n...

2013-07-01

163

21 CFR 864.5240 - Automated blood cell diluting apparatus.  

Code of Federal Regulations, 2011 CFR

...2011-04-01 false Automated blood cell diluting apparatus. 864.5240 Section...Devices § 864.5240 Automated blood cell diluting apparatus. (a) Identification. An automated blood cell diluting apparatus is a fully...

2011-04-01

164

Serial Learning in Rats: A Test of Three Hypotheses  

ERIC Educational Resources Information Center

Findings obtained by providing rats with a single fixed series of events, A-B-C-..., often are equally compatible with three alternative serial learning interpretations: that the signal for items is (A) their position in the series (position view), (B) the prior item of the series (chaining view), and (C) one, two, or more prior items of the…

Capaldi, E. J.; Miller, Ronald Mellado

2004-01-01

165

Serials Pricing and the Role of the Electronic Journal.  

ERIC Educational Resources Information Center

This third in a series of articles on scholarly communications and serials prices focuses on the possible role of electronic journals. Highlights include the increase in scientific and scholarly productivity; price differentials between private and for-profit journals; publisher's costs and profits; copyright issues; and the role of libraries and…

Metz, Paul; Gherman, Paul M.

1991-01-01

166

The Rise in Consumerism: The Year's Work in Serials, 1990.  

ERIC Educational Resources Information Center

Examines major issues and trends in serials management represented in the literature published during 1990. Topics covered include the pricing crisis; publishing and scholarly communication; cancellation projects; technological developments and alternatives to print; claiming and replacement activities; acquisitions and collection development;…

Lonberger, Jana

1991-01-01

167

Counterbalancing for Serial Order Carryover Effects in Experimental Condition Orders  

ERIC Educational Resources Information Center

Reactions of neural, psychological, and social systems are rarely, if ever, independent of previous inputs and states. The potential for serial order carryover effects from one condition to the next in a sequence of experimental trials makes counterbalancing of condition order an essential part of experimental design. Here, a method is proposed…

Brooks, Joseph L.

2012-01-01

168

Process to restore obliterated serial numbers on metal surfaces  

NASA Technical Reports Server (NTRS)

Metal smeared into grooves of serial numbers by grinding or filing can be cleaned out by process called cavitation. Ultrasonic vibrator generates very high frequency vibrations in water which create millions of microscopic bubbles. Cavitation bubbles impact metal surface at thousands of pounds per square inch pressure. Metal particles filling grooves are broken away.

Young, S. G.; Parker, B.; Chisum, W. J.

1974-01-01

169

When Temporal Isolation Benefits Memory for Serial Order  

ERIC Educational Resources Information Center

According to temporal distinctiveness models, items that are temporally isolated from their neighbors during list presentation are more distinct and thus should be recalled better. Contrary to that expectation of distinctiveness views, much recent evidence has shown that forward short-term serial recall is unaffected by temporal isolation. We…

Lewandowsky, Stephan; Nimmo, Lisa M.; Brown, Gordon D. A.

2008-01-01

170

The Insanity Plea in the Case of a Serial Killer  

Microsoft Academic Search

The authors comment on society's approach to criminal responsibility in the past and at present, and on the M'Naghten, the Durham, and the American Law Institute definitions of legal sanity. Some statistical studies concerning the frequency and success of the insanity plea in the United States are reported. The recent case of a serial killer, examined by the first author

George B. Palermo; Richard D. Knudten

1994-01-01

171

An Enigmatic Personality: Case Report of a Serial Killer  

Microsoft Academic Search

This case report describes a man with aggressive and anti-social behaviors, a 47, XYY karyotype, abnormally elevated urinary kryptopyrroles and multiple brain injuries who is now serving a 250 year sentence for the serial murders of 11 women. These multiple abnormal findings have relevance as identifiable precursors for potential violence in such individuals with a history of behavioral disturbance and

Richard T. Kraus

172

Encounter and death : The spatial behavior of US serial killers  

Microsoft Academic Search

The locations at which each of 54 US serial killers, who had each killed at least ten people, first encountered their victims (PFE) and later dumped their bodies (BD) were examined in relation to the residence of the offender in order to test three hypotheses: the home tended to be a geographical focus for the crimes; the PFE is more

Maurice Godwin; David Canter

1997-01-01

173

Child serial murder-psychodynamics: closely watched shadows.  

PubMed

There is a malignant transformation in object relations resulting in an identification with an omnipotent and cruel object resulting in an identity transformation. If the tension, desperation, and dissociation increase, serial murder becomes spree murder. The presence of pathological narcissism and psychopathic tendencies are of diagnostic significance in understanding the murderer's personality functioning and motivation to kill. Meloy (1988) considered the degree of sadism and aggression combined with narcissistic qualities to reflect the "malignancy" of the psychopathic disturbance where gratification (of aggression) occurs in the service of narcissistic functioning--that is, cruelty toward others in the form of a triumphant victory over a rejecting object. Meloy also believes that dissociation is ubiquitious in the psychopath. The initial murder of the serial murderer may reflect a "new identity." The pathological object-relations of narcissism and the malignant narcissism are important diagnostic indicators in the personality functioning of serial killers and the occurrence of these phenomena is a significant factor in the formation of the personalities of serial killers, their inner motivations, and their pattern of commission. PMID:11685995

Turco, R

2001-01-01

174

Monsters in the Media; Portrayal of the Psychopathic Serial Killer  

Microsoft Academic Search

Abstract This study aims to investigate the way in which the media represent the phenomenon,of the serial killer who is suffering from psychopathic disorder. It reviews what constitutes a person suffering from psychopathy, giving an understanding and definition of the personality disorder. It then gives an insight into the language which is used by various media texts in order to

Danielle Jeffery

175

Serial Killers: Academic Libraries Respond to Soaring Costs.  

ERIC Educational Resources Information Center

Discusses ways in which academic libraries are responding to rising costs of serials. Topics addressed include pricing by publishers; the effect of journal cancellations on research activities; interlibrary loans and document delivery services; coordinated cancelling; electronic journals; and experiences at the University of Arizona. (LRW)

McCarthy, Paul

1994-01-01

176

A 512 16-b bit-serial sorter chip  

Microsoft Academic Search

A hardware algorithm is presented for sorting. This algorithm is based on a highly pipelined bit-serial architecture. The processing time of this sorter is linearly proportional to the number of data. Sorting cells are much smaller and simpler than previously reported sorter cells. A single chip sorting 512 16-b keys was designed with a 2-?m process and simulated at 240

M. Afghahi

1991-01-01

177

Fitting a Serial Correlation Pattern to Repeated Observations.  

ERIC Educational Resources Information Center

When repeated observations are taken at equal time intervals, a simple form of a stationary time series structure may be fitted to the observations. Use of correction factors is discussed. A computer simulation method is used to investigate power advantages of fitting a serial correlation pattern to repeated observations. (TJH)

Edwards, Lynne K.

1991-01-01

178

Forensic sexology: paraphilic serial rape (biastophilia) and lust murder (erotophonophilia).  

PubMed

Forensic sexology is not synonymous with either forensic psychiatry or forensic psychology. It is a specialty in its own right, and is needed in the courtroom. Paraphilic sex offenders on trial are misrepresented as being, by their own choice, psychopathic or sociopathic deviates. They are unable to explain their paraphilic criminality to either themselves or society. In a case of serial rape and serial lust murder here presented, the contributory causes are examined and differentiated as hereditary predisposition, hormonal functioning; pathological relationships, sexual abuse; and syndrome overlap with bipolar disorder, schizoid disorder, antisocial personality disorder, epilepsy, and multiple personality. The precipitating causes were differentiated as childhood head injuries, and adult head injury at age 20. Left impact trauma and sexological trauma were sequelae of the adult injury. The full range of diagnostic resources was not available for a prisoner on death row. Capital punishment has not prevented the reemergence in each new generation of serial rape and serial lust murder as an epidemiological, public health problem. Punishment is an ineffectual substitute for epidemiological research into cause, effect, and prevention. PMID:2327516

Money, J

1990-01-01

179

Serially Biased Components for Digital-RF Receiver  

Microsoft Academic Search

Reduction of total bias current using the serial biasing technique is required for RSFQ-based digital-RF receiver realization. This will have a major impact on reducing the size, weight and power consumption of the complete cryocooled receiver system. The approach is based on partitioning a homogeneous design into several isolated islands biased in series and transmitting SFQ pulses between islands, over

Timur V. Filippov; Anubhav Sahu; Saad Sarwana; Deepnarayan Gupta; Vasili K. Semenov

2009-01-01

180

Serially configured matched filter interrogation technique for Bragg grating arrays  

Microsoft Academic Search

We describe an interrogation technique for fiber Bragg grating sensors based on serially arranged set of receiver FBG elements, which are used to decode strain induced wavelength shifts of six FBG sensor elements. Each of the receiver elements is wavelength-matched to one of the FBG sensor elements allowing for wavelength discrimination and passive demodulation of individual sensor strain information.

Michael A. Davis; Alan D. Kersey

1995-01-01

181

DC and RF Measurements of Serial Bi-SQUID Arrays  

E-print Network

SQUID arrays are promising candidates for low profile antennas and low noise amplifier applications. We present the integrated circuit designs and results of DC and RF measurements of the wideband serial arrays based on integration of linear bi-SQUID cells forming a Superconducting Quantum Interference Filter (bi-SQUID SQIF). Various configurations of serial arrays designs are described. The measured linearity, power gain, and noise temperature are analyzed and compared. The experimental results are matched to results of mathematical modeling. A serial bi-SQUID SQIF arrays are mounted into a coplanar waveguide (CPW) and symmetrically grounded to corresponding sides of CPW. The RF output comes out from the central common line, which is also used for DC biasing and forms a symmetrical balanced output. The signal and DC flux biasing line is designed as coplanar lines passed in parallel over each bi-SQUID cell in a bidirectional fashion concentrating magnetic flux inside of each cell. Serial bi-SQUID SQIF arrays ...

Prokopenko, G V; de Escobar, A Leese; Taylor, B; de Andrade, M C; Berggren, S; Longhini, P; Palacios, A; Nisenoff, M; Fagaly, R L

2012-01-01

182

The Disappearance of Moral Choice in Serially Reproduced Narratives  

E-print Network

person narrative Digital Object Identifier 10.4230/OASIcs.CMN.2013.36 1 Introduction The large questionThe Disappearance of Moral Choice in Serially Reproduced Narratives Fritz Breithaupt1 , Kevin M Sciences Johns Hopkins University Baltimore, MD, USA szorowi1@gmail.com Abstract How do narratives

Kruschke, John K.

183

Calculations Show Substantial Serial Engagement of T Cell Receptors  

Microsoft Academic Search

The serial engagement model provides an attractive and plausible explanation for how a typical antigen presenting cell, exhibiting a low density of peptides recognized by a T cell, can initiate T cell responses. If a single peptide displayed by a major histocompatibility complex (MHC) can bind, sequentially, to different T cell receptors (TCR), then a few peptides can activate many

Carla Wofsy; Daniel Coombs; Byron Goldstein

2001-01-01

184

A Survey of Serials Lists in New England Libraries.  

National Technical Information Service (NTIS)

In January 1972, the New England Library Information Network (NELINENT) conducted a survey of serials lists and the need for further union list coverage in the New England region. The survey was an outgrowth of a meeting of librarians concerned with seria...

R. DeBuse

1972-01-01

185

Phonological Similarity in Serial Recall: Constraints on Theories of Memory  

ERIC Educational Resources Information Center

In short-term serial recall, similar-sounding items are remembered more poorly than items that do not sound alike. When lists mix similar and dissimilar items, performance on the dissimilar items is of considerable theoretical interest. Farrell and Lewandowsky [Farrell, S., & Lewandowsky, S. (2003). Dissimilar items benefit from phonological…

Lewandowsky, Stephan; Farrell, Simon

2008-01-01

186

A Case of Spree Serial Murder with Suggested Diagnostic Opinions  

Microsoft Academic Search

The relationship between a severe variant of narcissistic personality disorder (namely malignant narcissism) and the motivation to murder is presented in the case of a British spree serial killer. The case illustrates the development of this form of psychopathology and its association with the underlying inner narrative generated in the murderer's mind. The relationship between the pathology of narcissism, psychopathic

Philip H. Pollock

1995-01-01

187

Helium Dilution Cryocooler for Space Applications  

NASA Technical Reports Server (NTRS)

NASA's New Millenium Program Space Technology presents the Helium Dilution Cryocooler for Space Applications. The topics include: 1) Capability; 2) Applications; and 3) Advantages. This paper is in viewgraph form.

Roach, Pat; Hogan, Robert (Technical Monitor)

2001-01-01

188

Calorimetric Study of Diluted Spin Ice Materials  

NASA Astrophysics Data System (ADS)

Spin ice materials Dy2Ti2O7 and Ho2Ti2O7 have been the subject of ongoing interest for over ten years. The cooperative magnetic ground state can be mapped onto the proton disordered ground state in water ice, and its residual entropy follows the same Pauling's estimate. Interestingly it was found in a previous study that, upon dilution of the magnetic rare earth ions Dy^3+ and Ho^3+ by non-magnetic substitutes Y^3+, the residual entropy depends non-monotonically on the dilution level. In this work we investigate through Monte Carlo simulations microscopic models to account quantitatively for the calorimetric experimental measurements, and thus also the residual entropies as a function of dilution. Features of the dilution physics in the specific heat are captured quantitatively by the microscopic models and the interplay between dilution and frustration is understood on the basis of a Bethe lattice calculation. The effect of the dipolar interactions between magnetic spins are exposed numerically for various dilution concentrations. Our work explains the previous discrepancy of the residual entropy between different species of rare earth ions and the generalized Pauling's estimate.

Lin, Taoran; Ke, Xianglin; Thesberg, Mischa; Schiffer, Peter; Melko, Roger; Gingras, Michel

2012-02-01

189

Preparation of serial sections of arthropods using 2, 2-dimethoxypropane dehydration and epoxy  

E-print Network

Preparation of serial sections of arthropods using 2, 2-dimethoxypropane dehydration and epoxy arthropods using serial semithin sections. The specimens were dehydrated with acidified 2, 2 diamond knives are used. Key words: arthropods, dehydration, 2, 2-dimethoxypropane, DMP, resin embedding

Krenn, Harald W.

190

Programed asynchronous serial data interrogation in a two-computer system  

NASA Technical Reports Server (NTRS)

Technique permits redundant computers, with one unit in control mode and one in MONITOR mode, to interrogate the same serial data source. Its use for program-controlled serial data transfer results in extremely simple hardware and software mechanization.

Schneberger, N. A.

1975-01-01

191

Seriality, the Literary and Database in Homestar Runner: Some Old Issues in New Media  

E-print Network

Serial narratives can be reconfigured in digital media sincedigital literature, the logics of algorithms and database transform the storytelling potential of serial narratives.narrative progression is not only a convention, but also a structural condition of digital

Boluk, Stephanie

2009-01-01

192

Magnetic Resonance Angiography Can Serially Evaluate Thrombolysis of In-stent Thrombus , H. Kaneda1  

E-print Network

Magnetic Resonance Angiography Can Serially Evaluate Thrombolysis of In-stent Thrombus M. Hyon1 , H would be beneficial. Using an in-stent thrombosis model, we evaluated MR angiography (MRA) for serial

Southern California, University of

193

The Circulation Analysis of Serial Use: Numbers Game or Key to Service?  

PubMed Central

The conventionally erected and reported circulation analysis of serial use in the individual and the feeder library is found to be statistically invalid and misleading, since it measures neither the intellectual use of the serial's contents nor the physical handlings of serial units, and is nonrepresentative of the in-depth library use of serials. It fails utterly to report or even to suggest the relation of intralibrary and interlibrary serial resources. The actual mechanics of the serial use analysis, and the active variables in the library situation which affect serial use, are demonstrated in a simulated analysis and are explained at length. A positive design is offered for the objective gathering and reporting of data on the local intellectual use and physical handling of serials and the relating of resources. Data gathering in the feeder library, and implications for the extension of the feeder library's resources, are discussed. PMID:6055863

Raisig, L. Miles

1967-01-01

194

76 FR 42730 - In the Matter of Certain Univeral Serial Bus (“USB”) Portable Storage Devices, Including USB...  

Federal Register 2010, 2011, 2012, 2013

...Univeral Serial Bus (``USB'') Portable Storage Devices, Including USB Flash Drives and...universal serial bus (``USB'') portable storage devices, including USB flash drives and...universal serial bus (``USB'') portable storage devices, including USB flash drives...

2011-07-19

195

Serial Entrepreneurs and Venture Performance: Evidence from U.S. Venture-Capital-Financed  

E-print Network

Serial Entrepreneurs and Venture Performance: Evidence from U.S. Venture during 1995-1999 does not show evidence of self-selection of highly-capable entrepreneurs into serial entrepreneurship and indicates that the hazard rate of firms founded by serial entrepreneurs is substantially lower

Sadoulet, Elisabeth

196

A SERIALS DATA PROGRAM FOR SCIENCE AND TECHNOLOGY, RESULTS OF A FEASIBILITY STUDY. FINAL REPORT.  

ERIC Educational Resources Information Center

THIS REPORT PRESENTS THE RESULTS OF A STUDY OF THE FEASIBILITY OF ESTABLISHING A CONTINUING NATIONAL INVENTORY OF THE WORLD'S SCIENTIFIC AND TECHNICAL SERIALS. THE MAJOR TECHNICAL, OPERATIONAL, AND ECONOMIC FACTORS INVOLVED IN THE IMPLEMENTATION AND OPERATION OF SUCH A SERIALS DATA PROGRAM HAVE BEEN EXAMINED. THE BASIC PARAMETERS OF A SERIALS DATA…

CREAGER, WILLIAM A.; SPARKS, DAVID E.

197

The Monster Within: How Male Serial Killers Discursively Manage Their Stigmatized Identities  

Microsoft Academic Search

Investigations of identity management regarding serial killers are sparse and rarely account for the communal discourse surrounding serial homicide. Such studies are essential to understanding the intersections of stigma and identity, particularly for the exploration of reframing that is severely limited for deviant populations. This interpretive study examined 13 interviews with serial killers to explore stigmatized identity management. The analysis

Jayne R. Henson; Loreen N. Olson

2010-01-01

198

Prostitutes as Victims of Serial Homicide: Trends and Case Characteristics, 1970-2009  

Microsoft Academic Search

This work includes a count of solved serial murder cases in the United States from 1970 to 2009. The number of serial murder cases has declined; the likelihood that a victim is a female has increased somewhat and although the numbers of all types of serial murder victims has declined, when a case occurs, victims are increasingly likely to be

Kenna Quinet

2011-01-01

199

Statically Equivalent Serial Chains for Modeling the Center of Mass of Humanoid Robots  

E-print Network

Statically Equivalent Serial Chains for Modeling the Center of Mass of Humanoid Robots Sebastien on the Statically Equivalent Serial Chain (SESC) model, a serial chain representation of any multi-link branched. INTRODUCTION The study and management of the static balance of humanoid robots has generated significant

Paris-Sud XI, Université de

200

ARE PARALLEL ROBOTS MORE ACCURATE THAN SERIAL ROBOTS? Sbastien Briot and Ilian A. Bonev  

E-print Network

ARE PARALLEL ROBOTS MORE ACCURATE THAN SERIAL ROBOTS? Sébastien Briot and Ilian A. Bonev _____________________________________________________________________________ ABSTRACT It is widely claimed that parallel robots are intrinsically more accurate than serial robots of serial- parallel 2-DOF planar robots. Only input errors are considered and all robots are optimized

Paris-Sud XI, Université de

201

Serial Position Effects in the Identification of Letters, Digits, and Symbols  

Microsoft Academic Search

In 6 experiments, the authors investigated the form of serial position functions for identification of letters, digits, and symbols presented in strings. The results replicated findings obtained with the target search paradigm, showing an interaction between the effects of serial position and type of stimulus, with symbols generating a distinct serial position function compared with letters and digits. When the

Ilse Tydgat; Jonathan Grainger

2009-01-01

202

Seriality and Multicultural Dissent in the Same-Sex Marriage Debate  

Microsoft Academic Search

Seriality” is a useful critical heuristic for engaging the contours of identity politics, as it recognizes the limits of essentialism and simultaneously acknowledges its frequent necessity for accomplishing goals and building coalitions. Using contemporary debates about same-sex marriage, this essay places seriality into conversation with rhetorical theory to explore the discursive possibilities of this conceptual practice. While seriality focuses explicitly

Jeffrey A. Bennett

2006-01-01

203

[Some criminological and psychopathologic reflexions about serial crimes].  

PubMed

This article reviews the concept of serial crime, including murder as well as any action for the purpose of inflicting bodily harm upon any person. It characterizes three types of multi-murderers: serial killers, mass murderers, and spree killers. These offenders often have a specific (ritual) behavior that is idiosyncratic and repeated on each crime, which allows the psychological profiling of the murderer. Examples, a psychopathological background, and a description of both their criminal behavior and dynamics are provided for each of these criminals. They are further classified according to their different motivations: psychotic, prophetic or enlightened, pleasure, secondary or pecuniary profits, power or control. Finally, the author shares his personal experience over 20 years in the assessment of sexual offenders. PMID:22091451

Romi, Juan Carlos

2011-01-01

204

Inferring evolutionary rates using serially sampled sequences from several populations.  

PubMed

The estimation of evolutionary rates from serially sampled sequences has recently been the focus of several studies. In this paper, we extend these analyzes to allow the estimation of a joint rate of substitution, omega, from several evolving populations from which serial samples are drawn. In the case of viruses evolving in different hosts, therapy may halt replication and therefore the accumulation of substitutions in the population. In such cases, it may be that only a proportion, p, of subjects are nonresponders who have viral populations that continue to evolve. We develop two likelihood-based procedures to jointly estimate p and omega, and empirical Bayes' tests of whether an individual should be classified as a responder or nonresponder. An example data set comprising HIV-1 partial envelope sequences from six patients on highly active antiretroviral therapy is analyzed. PMID:12949147

Rodrigo, Allen G; Goode, Matthew; Forsberg, Roald; Ross, Howard A; Drummond, Alexei

2003-12-01

205

Serial network simplifies the design of multiple microcomputer systems  

SciTech Connect

Recently there has been a lot of interest in developing network communication schemes for carrying digital data between locally distributed computing stations. Many of these schemes have focused on distributed networking techniques for data processing applications. These applications suggest the use of a serial, multipoint bus, where a number of remote intelligent units act as slaves to a central or host computer. Each slave would be serially addressable from the host and would perform required operations upon being addressed by the host. Based on an MK3873 single-chip microcomputer, the SCU 20 is designed to be such a remote slave device. The capabilities of the SCU 20 and its use in systems applications are examined.

Folkes, D.

1981-01-01

206

Dental identification in serial homicides: the Green River Murders.  

PubMed

At least 40 young women have died at the hands of a serial killer in what has been called the Green River Murders. Because most of the victims' remains were severely decomposed with partial or complete skeletonization and little or no personal effects were recovered, forensic odontologic methods played a key role in their identifications. Although numerous methods were used to accumulate leads to the identities of the badly decomposed skeletonized remains, leads generated through traditional investigative methods established the identities in most cases. Of 40 victims, 36 have now been identified, mainly by means of dental evidence. This article details the challenges presented by serial homicides and the key role of forensic odontologic methods in the Green River Murders investigation. PMID:2768702

Rothwell, B R; Haglund, W; Morton, T H

1989-09-01

207

Serial and parallel encoding processes in memory and visual search  

Microsoft Academic Search

Used an S. Sternberg paradigm in 2 experiments with 12 undergraduates each. Test-set size and delay between presentation of memory and test sets were varied. The existence of a serial memory-set encoding stage was inferred from the observed effect of memory-set size on reaction time (RT) over and above its contribution to the number of comparisons to be performed. In

Jane M. Connor

1972-01-01

208

Which serial killers commit suicide? An exploratory study.  

PubMed

In a sample of 483 serial killers, 6.2% were documented to have committed suicide. Those who committed suicide were found to come from more dysfunctional homes characterized by more psychiatric disturbance in the parents. The sexual acts involved in the murders by the suicides seemed to be more deviant in some aspects, such as committing more bizarre sexual acts or more often taping the murder. PMID:23131308

Lester, David; White, John

2012-11-30

209

A nonparametric trend test for seasonal data with serial dependence.  

USGS Publications Warehouse

Statistical tests for monotonic trend in seasonal (eg monthly) hydrologic time series are commonly confounded by some of the following problems: nonnormal data, missing values, seasonality, censoring and serial dependence. An extension of the Mann-Kendall test for trend (designed for such data) is presented here. Because the test is based entirely on tanks, it is robust against nonnormality and censoring.-from Authors

Hirsch, R. M.; Slack, J. R.

1984-01-01

210

African-American Catholic Serial Literature Prior to 1960  

Microsoft Academic Search

This study identifies the titles and discusses the sources of periodical literature regarding African-American Catholics prior to two roughly coinciding and momentous events-the Second Vatican Council of the Catholic Church, 1962-1965, and the start of this century's American civil rights movement. Beginning in the 1880s, serials about and for black Catholics were published by both religious and secular individuals and

Michael Krieger

1998-01-01

211

Seriality in Contemporary American Memoir: 1957-2007  

E-print Network

is a burgeoning and powerful form of self-expression, and that a close examination of how authors are presenting and re-presenting themselves as they challenge conventional life writing narrative structures will influence not only the way we read... and understand contemporary memoir, but will impact our approaches to self-reflexive narrative structures and provide us with new ways to understand ourselves, and our lives, in relation to the serial culture in which we live. v DEDICATIOglyph1197...

McDaniel-Carder, Nicole Eve

2010-10-12

212

Serial CSTR digester configuration for improving biogas production from manure  

Microsoft Academic Search

A new configuration of manure digesters for improving biogas production has been investigated in laboratory scale. A single thermophilic continuous-flow stirred tank reactor (CSTR) operated with a hydraulic retention time (HRT) of 15 days was compared to a serial CSTR configuration with volume distribution ratio of 80\\/20 and 90\\/10, and total HRT of 15 days. The results showed that the

Kanokwan Boe; Irini Angelidaki

2009-01-01

213

Two Serial Data to Pulse Code Modulation System Interfaces  

NASA Technical Reports Server (NTRS)

Two pulse code modulation (PCM) system interfaces for asynchronous serial data are described. One interface is for global positioning system (GPS) data on the NASA Dryden Flight Research Center (DFRC) F-15B (McDonnell Douglas Corporation, St. Louis, Missouri) airplane, tail number 836 (F-15B/836). The other is for flight control computer data on the duPont Aerospace (La Jolla, California) DP-1, a 53-percent scale model of the duPont Aerospace DP-2.

Hamory, Phil

2006-01-01

214

Automated segmentation of alloy microstructures in serial section images  

Microsoft Academic Search

This paper describes the application of the expectation-maximization\\/maximization of the posterior marginals (EM\\/MPM) algorithm to serial section images, which inherently represent three dimensional (3D) data. The images of interest are electron micrographs of cross sections of a titanium alloy. To improve the accuracy of the resulting segmentation images, the images are pre-filtered before being used as input to the EM\\/MPM

Joel M. Dumke; Mary L. Comer

2007-01-01

215

Context dependent learning in the serial RT task  

Microsoft Academic Search

This study investigated the development of contextual dependencies for sequential perceptual-motor learning on static features\\u000a in the learning environment. In three experiments we assessed the effect of manipulating task irrelevant static context features\\u000a in a serial reaction-time task. Experiment 1 demonstrated impaired performance after simultaneously changing display color,\\u000a placeholder shape, and placeholder location. Experiment 2 showed that this effect was

Elger L. Abrahamse; Willem B. Verwey

2008-01-01

216

Efficient interleaver memory architectures for serial turbo decoding  

Microsoft Academic Search

A practical turbo decoder is usually implemented with a serial decoding architecture for low complexity, where the extrinsic information symbols are stored in the so-called interleaver memory for the next decoding. Either a dual-port (or two ping-pong memories) or a single-port memory can be employed for this memory. The first approach achieves twice the throughput as the second one while

Zhongfeng Wang; Keshab Parhi

2003-01-01

217

Representation of Serial Order in Monkeys (Cebus apella )  

Microsoft Academic Search

Cebus monkeys were trained on a five-item serial learning task, symbolized asABCDE; the initial stages of training were on the shorter subseriesAB, ABC, andABCD. To assess the monkeys' knowledge of the sequential position of each item, pair-wise tests were given to 2 subjects after acquisition of theABCD series and to 4 subjects after reaching criterion on theABCDE series. In both

M. R. DAmato; Michael Colombo

1988-01-01

218

Lipidic cubic phase injector facilitates membrane protein serial femtosecond crystallography  

PubMed Central

Lipidic cubic phase (LCP) crystallization has proven successful for high-resolution structure determination of challenging membrane proteins. Here we present a technique for extruding gel-like LCP with embedded membrane protein microcrystals, providing a continuously-renewed source of material for serial femtosecond crystallography. Data collected from sub-10 ?m-sized crystals produced with less than 0.5 mg of purified protein yield structural insights regarding cyclopamine binding to the Smoothened receptor. PMID:24525480

Weierstall, Uwe; James, Daniel; Wang, Chong; White, Thomas A.; Wang, Dingjie; Liu, Wei; Spence, John C.H.; Doak, R. Bruce; Nelson, Garrett; Fromme, Petra; Fromme, Raimund; Grotjohann, Ingo; Kupitz, Christopher; Zatsepin, Nadia A.; Liu, Haiguang; Basu, Shibom; Wacker, Daniel; Han, Gye Won; Katritch, Vsevolod; Boutet, Sebastien; Messerschmidt, Marc; Williams, Garth J.; Koglin, Jason E.; Seibert, M. Marvin; Klinker, Markus; Gati, Cornelius; Shoeman, Robert L.; Barty, Anton; Chapman, Henry N.; Kirian, Richard A.; Beyerlein, Kenneth R.; Stevens, Raymond C.; Li, Dianfan; Shah, Syed T.A.; Howe, Nicole; Caffrey, Martin; Cherezov, Vadim

2014-01-01

219

Sticky Plans: Inhibition and Binding during Serial Task Control  

PubMed Central

Recent evidence suggests substantial response-time costs associated with lag-2 repetitions of tasks within explicitly controlled task sequences (Koch, Philipp, & Gade, 2006, Schneider, 2007), a result that has been interpreted as inhibition of no-longer relevant tasks. Experiments 1–3 confirm much larger lag-2 costs under serial-control than under externally cued conditions, but also show (a) that these costs occur only when sequences contain at least two distinct chunks and (b) that direct lag-2 repetitions are not a necessary condition for their occurrence. This pattern suggests the hypothesis that rather than task-set inhibition, the large lag-2 costs observed in complex sequences, reflect interference resulting from links between positions within a sequential plan and the individual tasks controlled by this plan. The remaining experiments successfully test this hypothesis (Exp. 4), rule out chaining accounts as a potential alternative explanation (Exp. 5), and demonstrate that interference results from information stored in long-term memory rather than working memory (Exp. 6). Implications of these results for an integration of models of serial-order control and serial memory are discussed. PMID:19427636

Mayr, Ulrich

2009-01-01

220

Serial pixel analog-to-digital converter (ADC)  

NASA Astrophysics Data System (ADS)

This method reduces the data path from the counter to the pixel register of the analog-to-digital converter (ADC) from as many as 10 bits to a single bit. The reduction in data path width is accomplished by using a coded serial data stream similar to a pseudo random number (PRN) generator. The resulting encoded pixel data is then decoded into a standard hexadecimal format before storage. The high-speed serial pixel ADC concept is based on the single-slope integrating pixel ADC architecture. Previous work has described a massively parallel pixel readout of a similar architecture. The serial ADC connection is similar to the state-of-the art method with the exception that the pixel ADC register is a shift register and the data path is a single bit. A state-of-the-art individual-pixel ADC uses a single-slope charge integration converter architecture with integral registers and "one-hot" counters. This implies that parallel data bits are routed among the counter and the individual on-chip pixel ADC registers. The data path bit-width to the pixel is therefore equivalent to the pixel ADC bit resolution.

Larson, Eric D.

2010-02-01

221

Highly Reliable, High-Speed, Unidirectional Serial Data Links  

NASA Technical Reports Server (NTRS)

Highly reliable, high-speed, unidirectional serial data-communication subsystems have been proposed to be installed in an upgrade of the computing systems aboard the space shuttles. The basic design concept of these serial data links is also adaptable to terrestrial use in applications in which there are requirements for highly reliable serial data communications. The hardware and software aspects of the architecture of the data links are dictated largely by a requirement, in the original space-shuttle application, for one computer to monitor the memory transactions and memory contents of other computers in real time with high reliability and without reliance on requests for retransmission. To minimize weight while affording a capability to transfer data at a required rate of 2.56 x 10(exp 8) bits per second, it was decided that the links would be serial ones of the fiber-channel type. [Fiber channel denotes a type of serial computer bus that is used to connect a computer (usually a supercomputer) with a high-speed data storage device. Depending on the specific application, the physical connection between the transmitter and receiver could be made via an optical fiber or a twisted pair of wires.] Heretofore, fiber-channel links have ordinarily been bidirectional and have operated under protocols that provide for receiving stations to detect errors and request retransmission when necessary. In the present case, the time taken by processing to request retransmission would conflict with the requirement for real-time transfer of data. To ensure reliability without retransmission, a link according to the proposal would utilize a modified version of the normal fiberchannel character set in conjunction with forward error correction by means of a Reed-Solomon code (see figure). The Reed-Solomon encoding and decoding and the translations between the normal and modified character sets would be effected by logic circuitry external to the fiber-channel transmitter and receiver, which would be commercial off-the-shelf units. The receiving end of the link could detect and correct errors at a rate as high as 4 million times per second, if necessary. The receiver detects uncorrectable double-byte errors. It has been estimated that uncorrectable-error rate would amount to one failure in about 10(exp 19) characters.

Cole, Robert M.; Bishop, Jamie

2005-01-01

222

Recombinant nucleocapsid protein based single serum dilution ELISA for the detection of antibodies to infectious bronchitis virus in poultry.  

PubMed

Avian infectious bronchitis is ubiquitous and highly contagious disease of poultry, with profound effect on commercial poultry production. For effective control of infectious bronchitis virus (IBV), quick and specific diagnosis is of utmost importance. In this study, the virus was isolated from clinical samples from India and the full length nucleocapsid (N) gene was amplified, cloned and expressed in a prokaryotic system. The purified recombinant N protein based single serum dilution enzyme linked immunosorbent assay (ELISA) was developed for IBV to measure specific antibody in the sera of chickens. A total of 310 chicken sera samples were tested using the commercial IDEXX kit along with the assay developed. A linear correlation was obtained between predicted antibody titres at a single working dilution of 1:100 and the corresponding serum titres observed as determined by the standard serial dilution method. Regression analysis was used to construct a standard curve from which an equation was derived which confirmed their correlation. The developed equation was then used to extrapolate predicated ELISA antibody titer from corrected absorbance readings of the single working dilution. The assay proved to be specific (95.8%) and sensitive (96.8%) when compared to the commercial IDEXX ELISA test. PMID:25173423

Pradhan, Sunil K; Kamble, Nitin M; Pillai, Aravind S; Gaikwad, Satish S; Khulape, Sagar A; Reddy, M R; Mohan, C Madhan; Kataria, Jag Mohan; Dey, Sohini

2014-12-01

223

Diluted magnetic semiconductor nanowires exhibiting magnetoresistance  

DOEpatents

A method for is disclosed for fabricating diluted magnetic semiconductor (DMS) nanowires by providing a catalyst-coated substrate and subjecting at least a portion of the substrate to a semiconductor, and dopant via chloride-based vapor transport to synthesize the nanowires. Using this novel chloride-based chemical vapor transport process, single crystalline diluted magnetic semiconductor nanowires Ga.sub.1-xMn.sub.xN (x=0.07) were synthesized. The nanowires, which have diameters of .about.10 nm to 100 nm and lengths of up to tens of micrometers, show ferromagnetism with Curie temperature above room temperature, and magnetoresistance up to 250 Kelvin.

Yang, Peidong (El Cerrito, CA); Choi, Heonjin (Seoul, KR); Lee, Sangkwon (Daejeon, KR); He, Rongrui (Albany, CA); Zhang, Yanfeng (El Cerrito, CA); Kuykendal, Tevye (Berkeley, CA); Pauzauskie, Peter (Berkeley, CA)

2011-08-23

224

Etiology of the Psychopathic Serial Killer: An Analysis of Antisocial Personality Disorder, Psychopathy, and Serial Killer Personality and Crime Scene Characteristics  

Microsoft Academic Search

The purpose of this article is to make the distinction between antisocial personality disorder and psychopathy, discuss possible etiologies of psychopathy, and analyze the crimes, personality characteristics, and historical aspects of psychopathic serial killers. The research indicates that both environmental and biological factors affect the development of psychopathy. Several different serial killers were compared to assess the similarities and differences

Rebecca Taylor LaBrode

2007-01-01

225

Electron Density of States of Dilute Alloys.  

National Technical Information Service (NTIS)

The change in the electron density of states with dilute alloying is directly related to the shielding of the added impurities. If there is no volume change on alloying, the change in rho (E), the density of states at energy E, is proportional to the exce...

E. A. Stern

1969-01-01

226

LAKE RESTORATION BY DILUTION: MOSES LAKE, WASHINGTON  

EPA Science Inventory

Dilution water, low in macronutrients, was added to Moses Lake on three occasions in 1977 and once in 1978 during the spring-summer period. The addition resulted in reducing the annual average inflow concentration of phosphorus from about 130-140 micrograms/l to 100 micrograms/l....

227

Soret and Dilution Effects on Premixed Flames  

Microsoft Academic Search

The structure of a wrinkled premixed flame is analysed theoretically. By assuming the reactive mixture diluted in an inert gas and a weak cross-diffusion coupling between the heat and mass fluxes, the effect of the change by the reaction of the physical gas properties (thermal conductivity, specific heat, number of molecules) and Soret and Dufour diffusions have been investigated in

PEDRO GARCÍA-YBARRA; COLETTE NICOLI; PAUL CLAVIN

1984-01-01

228

Resistance Minimum in Dilute Magnetic Alloys  

Microsoft Academic Search

Based on the s-d interaction model for dilute magnetic alloys we have calculated the scattering probability of the conduction electrons to the second Born approximation. Because of the dynamical character of the localized spin system, the Pauli principle should be taken into account in the intermediate states of the second order terms. Thus the effect of the Fermi sphere is

Jun Kondo

1964-01-01

229

Surface Pretreatment Based On Dilute Hexafluorozirconic Acid  

Microsoft Academic Search

Two surface pretreatments based on dilute hexafluorozirconic acid (FZ) solution, a simple FZ and a modified FZ or MFZ, were studied as replacements for the phosphating process. The FZ conversion coatings were deposited on cold rolled steel (CRS) substrates by immersion treatment. AFM images reveal that the coating surface exhibited small features tens of nm in size and clusters of

Y. Zhai; Z. Zhao; G. S. Frankel; J. Zimmerman; T. Bryden; W. Fristad

230

Inorganic positive uniaxial films fabricated by serial bideposition.  

PubMed

The physical vapor deposition process of serial bideposition is adapted to the fabrication of uniaxial optical coatings. During the coating process the vapor impinges at an angle of incidence of about 70 on to the substrate, and a stepwise axial rotation with 90 increments causes a columnar structure to grow normal to the substrate. Symmetry considerations that follow from the choice of 90 for the stepwise increment ensure that the film is achiral and has negligible in-plane linear birefringence. Optical characterization techniques confirm that films of tantalum oxide, titanium oxide and zirconium oxide are positive uniaxial with ne -no in the range 0.10 to 0.14. PMID:19483917

Hodgkinson, Ian; Wu, Qi Hong; De Silva, Lakshman; Arnold, Matthew

2004-08-01

231

A sociological analysis of serial murder: victim and offender characteristics  

E-print Network

. The Federal Bureau of Investigation (FBI) has defined murder as ". . . the willful (nonnegligent) killing of one human being by another" (1981 ? 1987). They state that the typical murderer (who has been arrested) is a white male under the age of 25 (1981... descriptive. In fact, a large portion of the literature has not come from the academic field, but from research conducted utilizing data collected by the FBI. It is the purpose of the present study, therefore, to develop a sociological analysis of serial...

Dunlap, Donna Jean

2012-06-07

232

Constant-delay MSB-first bit-serial adder  

NASA Astrophysics Data System (ADS)

A new MSB-first bit-serial adder/subtracter architecture is proposed. The architecture utilizes a modified Manchester carry chain to accommodate the carry from the future LSB's. The carry chain is shown to have the constant delay of two AND gates and one XOR gate regardless of the operand width, which allows a fast constant operational clock frequency. When compared to the conventional parallel addition approach where the operand bits are stored and then added in parallel, the proposed architecture also provides a significant area saving. It is also shown that the proposed architecture can be generalized for radix-r operands.

Kang, Chang Yong; Swartzlander, Earl E., Jr.

2002-12-01

233

Serial fetal magnetic resonance imaging of cloacal exstrophy.  

PubMed

Cloacal exstrophy (CE) is a rare congenital malformation involving the urinary, intestinal, and genital systems. We present a case of CE in which characteristic findings were detected at two serial fetal magnetic resonance imaging (MRI) sessions. At 18 weeks' gestation, the initial fetal MRI revealed a cystic mass protruding from the infra-umbilical abdominal wall. During fetal development, the cystic mass disappeared, and an omphalocele and heterogeneous soft tissue mass were recognized at 28 weeks' gestation. The bladder was not visualized on either examination. CE can be diagnosed by prenatal MRI, thereby permitting prenatal counseling and appropriate postnatal management. PMID:21956372

Yamano, Toshiko; Ando, Kumiko; Ishikura, Reiichi; Hirota, Shozo

2011-11-01

234

Sequential angulation, spatial dispersion and consistency of distance attack patterns from home in serial murder, rape and burglary  

Microsoft Academic Search

Three related measures of spatial movement (sequential angulation, spatial dispersion and consistency of distance in attack target) were compared across three serial offence types: serial homicide (n=35), serial rape (n=41) and serial burglary (n=30). In each case, each offender had committed at least five offences. “Spatial dispersion”, defined as the extent to which an offender distributes his offences across either

Alasdair M. Goodwill; Laurence J. Alison

2005-01-01

235

Effect of type III antifreeze protein dilution and mutation on the growth inhibition of ice.  

PubMed

Mutation of residues at the ice-binding site of type III antifreeze protein (AFP) not only reduced antifreeze activity as indicated by the failure to halt ice crystal growth, but also altered ice crystal morphology to produce elongated hexagonal bipyramids. In general, the c axis to a axis ratio of the ice crystal increased from approximately 2 to over 10 with the severity of the mutation. It also increased during ice crystal growth upon serial dilution of the wild-type AFP. This is in marked contrast to the behavior of the alpha-helical type I AFPs, where neither dilution nor mutation of ice-binding residues increases the c:a axial ratio of the ice crystal above the standard 3.3. We suggest that the ice crystal morphology produced by type III AFP and its mutants can be accounted for by the protein binding to the prism faces of ice and operating by step growth inhibition. In this model a decrease in the affinity of the AFP for ice leads to filling in of individual steps at the prism surfaces, causing the ice crystals to grow with a longer c:a axial ratio. PMID:8913575

DeLuca, C I; Chao, H; Sönnichsen, F D; Sykes, B D; Davies, P L

1996-11-01

236

Serial crystallography on in vivo grown microcrystals using synchrotron radiation  

PubMed Central

Crystal structure determinations of biological macromolecules are limited by the availability of sufficiently sized crystals and by the fact that crystal quality deteriorates during data collection owing to radiation damage. Exploiting a micrometre-sized X-ray beam, high-precision diffractometry and shutterless data acquisition with a pixel-array detector, a strategy for collecting data from many micrometre-sized crystals presented to an X-ray beam in a vitrified suspension is demonstrated. By combining diffraction data from 80 Trypanosoma brucei procathepsin B crystals with an average volume of 9?µm3, a complete data set to 3.0?Å resolution has been assembled. The data allowed the refinement of a structural model that is consistent with that previously obtained using free-electron laser radiation, providing mutual validation. Further improvements of the serial synchrotron crystallography technique and its combination with serial femtosecond crystallography are discussed that may allow the determination of high-resolution structures of micrometre-sized crystals. PMID:25075324

Gati, Cornelius; Bourenkov, Gleb; Klinge, Marco; Rehders, Dirk; Stellato, Francesco; Oberthur, Dominik; Yefanov, Oleksandr; Sommer, Benjamin P.; Mogk, Stefan; Duszenko, Michael; Betzel, Christian; Schneider, Thomas R.; Chapman, Henry N.; Redecke, Lars

2014-01-01

237

Emotional and coping responses to serial killings. The Gainesville murders.  

PubMed

Forensic experts have focused more on the psychological profile of a serial killer rather than on the pronounced effects on the community at large. Coping with a stressful event is thought to influence emotional states. However, little empirical understanding of this process exists. The present study examined changes in psychological factors 9 days after the occurrence of serial killings in a college community. Multivariate analyses of variance conducted on the variables of stress, anxiety, physical symptoms, and depression revealed a significant difference between the group tested after the murders and a cross-sectional cohort group. Univariate analyses revealed that the study class was significantly more depressed compared with the cohort group. The study class was also significantly more depressed compared with their own responses 1 year before the killings. For both classes, depression was significantly correlated with certain coping styles, including escape-avoidance and accept responsibility. Results have implications for certain coping behaviors (i.e., avoidant behaviors), such as that leaving the community may have been maladaptive and perhaps diverted attention from the more necessary active problem-solving behaviors (e.g., increasing security) in addition to increasing depression. PMID:8320543

Norvell, N K; Cornell, C E; Limacher, M C

1993-07-01

238

Stability of high cell density brewery fermentations during serial repitching.  

PubMed

The volumetric productivity of the beer fermentation process can be increased by using a higher pitching rate (i.e. higher inoculum size). However, the decreased yeast net growth observed in these high cell density brewery fermentations can adversely affect the physiological stability throughout subsequent yeast generations. Therefore, different O(2) conditions (wort aeration and yeast preoxygenation) were applied to high cell density fermentation and eight generations of fermentations were evaluated together with conventional fermentations. Freshly propagated high cell density populations adapted faster to the fermentative conditions than normal cell density populations. Preoxygenating the yeast was essential for the yeast physiological and beer flavor compound stability of high cell density fermentations during serial repitching. In contrast, the use of non-preoxygenated yeast resulted in inadequate growth which caused (1) insufficient yield of biomass to repitch all eight generations, (2) a 10% decrease in viability, (3) a moderate increase of yeast age, (4) and a dramatic increase of the unwanted flavor compounds acetaldehyde and total diacetyl during the sequence of fermentations. Therefore, to achieve sustainable high cell density fermentations throughout the economical valuable process of serial repitching, adequate yeast growth is essential. PMID:19565190

Verbelen, Pieter J; Dekoninck, Tinne M L; Van Mulders, Sebastiaan E; Saerens, Sofie M G; Delvaux, Filip; Delvaux, Freddy R

2009-11-01

239

Estimation of the serial interval of pertussis in Dutch households.  

PubMed

Increasing incidence has led to the re-appearance of pertussis as a public health problem in developed countries. Pertussis infection is usually mild in vaccinated children and adults, but it can be fatal in infants who are too young for effective vaccination (?3 months). Tailoring of control strategies to prevent infection of the infant hinges on the availability of estimates of key epidemiological quantities. Here we estimate the serial interval of pertussis, i.e., the time between symptoms onset in a case and its infector, using data from a household-based study carried out in the Netherlands in 2007-2009. We use statistical methodology to tie infected persons to probable infector persons, and obtain statistically supported stratifications of the data by person-type (infant, mother, father, sibling). The analyses show that the mean serial interval is 20 days (95% CI: 16-23 days) when the mother is the infector of the infant, and 28 days (95% CI: 23-33 days) when the infector is the father or a sibling. These time frames offer opportunities for early mitigation of the consequences of infection of an infant once a case has been detected in a household. If preventive measures such as social distancing or antimicrobial treatment are taken promptly they could decrease the probability of infection of the infant. PMID:24928663

Te Beest, Dennis E; Henderson, Donna; van der Maas, Nicoline A T; de Greeff, Sabine C; Wallinga, Jacco; Mooi, Frits R; van Boven, Michiel

2014-06-01

240

33 CFR 154.824 - Inerting, enriching, and diluting systems.  

Code of Federal Regulations, 2013 CFR

...false Inerting, enriching, and diluting systems. 154.824 Section 154.824 Navigation...HAZARDOUS MATERIAL IN BULK Vapor Control Systems § 154.824 Inerting, enriching, and diluting systems. (a) A vapor control system...

2013-07-01

241

33 CFR 154.824 - Inerting, enriching, and diluting systems.  

Code of Federal Regulations, 2010 CFR

...false Inerting, enriching, and diluting systems. 154.824 Section 154.824 Navigation...HAZARDOUS MATERIAL IN BULK Vapor Control Systems § 154.824 Inerting, enriching, and diluting systems. (a) A vapor control system...

2010-07-01

242

33 CFR 154.824 - Inerting, enriching, and diluting systems.  

Code of Federal Regulations, 2012 CFR

...false Inerting, enriching, and diluting systems. 154.824 Section 154.824 Navigation...HAZARDOUS MATERIAL IN BULK Vapor Control Systems § 154.824 Inerting, enriching, and diluting systems. (a) A vapor control system...

2012-07-01

243

40 CFR 1065.340 - Diluted exhaust flow (CVS) calibration.  

Code of Federal Regulations, 2013 CFR

... Diluted exhaust flow (CVS) calibration...AGENCY (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING...and Verifications Flow-Related Measurements...recommend selecting CVS flow rates in a random...background in the dilution air at the...

2013-07-01

244

40 CFR 1065.340 - Diluted exhaust flow (CVS) calibration.  

Code of Federal Regulations, 2012 CFR

... Diluted exhaust flow (CVS) calibration...AGENCY (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING...and Verifications Flow-Related Measurements...recommend selecting CVS flow rates in a random...background in the dilution air at the...

2012-07-01

245

Dilute nanoemulsions via separation of satellite droplets.  

PubMed

A facile method is suggested for fabrication of dilute nanoemulsions. In a typical emulsification process, drops are usually accompanied by off-grade satellite droplets. The size of these satellite droplets ranges from hundreds of nanometers to above microns. Experiments were carried out to assess the possibility of separation of nanodrops from macroemulsions made via a conventional method in order to produce nanoemulsions. A low-power homogenizer was used to produce parent emulsions which were then injected from the bottom to a glass column containing water and allowed to cream. By monitoring drops remaining in the bottom of the column, it is clearly shown how progressively smaller they become with time yielding eventually dilute nanoemulsions. The average diameter of drops reduced to 100 nm when oil with high viscosity was used. The concentration of resulting nanoemulsions increased with increasing viscosity and ratio of the disperse phase of parent emulsions. PMID:23830283

Deen, Shad; Sajjadi, Shahriar

2013-10-01

246

Unstable blast shocks in dilute granular flows.  

PubMed

Shocks and blasts can be readily obtained in granular flows be they dense or dilute. Here, by examining the propagation of a blast shock in a dilute granular flow, we show that such a front is unstable with respect to transverse variations of the density of grains. This instability has a well-defined wavelength which depends on the density of the medium and has an amplitude which grows as an exponential of the distance traveled. These features can be understood using a simple model for the shock front, including dissipation which is inherent to granular flows. While this instability bears much resemblance to that anticipated in gases, it is distinct and has special features we discuss here. PMID:23767525

Boudet, J F; Kellay, H

2013-05-01

247

Unstable blast shocks in dilute granular flows  

NASA Astrophysics Data System (ADS)

Shocks and blasts can be readily obtained in granular flows be they dense or dilute. Here, by examining the propagation of a blast shock in a dilute granular flow, we show that such a front is unstable with respect to transverse variations of the density of grains. This instability has a well-defined wavelength which depends on the density of the medium and has an amplitude which grows as an exponential of the distance traveled. These features can be understood using a simple model for the shock front, including dissipation which is inherent to granular flows. While this instability bears much resemblance to that anticipated in gases, it is distinct and has special features we discuss here.

Boudet, J. F.; Kellay, H.

2013-05-01

248

A cooperative serial acquisition program: thoughts on a response to mounting fiscal pressures.  

PubMed

A regionally cooperative method of distributing responsibility for every serial title in a region is outlined. The system assures the equitable distribution of the number of titles for which each library is committed. Later refinements suggest an equalization of cost commitments on the basis of fiscal resources available for serial purchases. It is pointed out that fiscal realities will force some sort of serial acquisition cooperation for all viable medical libraries. PMID:4826481

Jones, C L

1974-04-01

249

Women’s Role in Serial Killing Teams: Reconstructing a Radical Feminist Perspective  

Microsoft Academic Search

This article examines women’s roles in serial killing teams and reconsiders the traditional applications of radical feminist\\u000a research on serial killers. These applications limit the utility of radical feminist theory for understanding female serial\\u000a killers who kill in teams. An analysis of patriarchal power relations, which emphasizes the constitutive element of radical\\u000a feminist theory, provides a useful framework to achieve

Jennie Thompson; Suzanne Ricard

2009-01-01

250

Dilution in single pass arc welds  

Microsoft Academic Search

A study was conducted on dilution of single pass arc welds of type 308 stainless steel filler metal deposited onto A36 carbon\\u000a steel by the plasma arc welding (PAW), gas tungsten arc welding (GTAW), gas metal arc welding (GMAW), and submerged are welding\\u000a (SAW) processes. Knowledge of the arc and melting efficiency was used in a simple energy balance to

J. N. DuPont; A. R. Marder

1996-01-01

251

Spin currents in diluted magnetic semiconductors.  

PubMed

We study zero-bias spin separation in (Cd,Mn)Te/(Cd,Mg)Te diluted magnetic semiconductor structures. The spin current generated by electron gas heating under terahertz radiation is converted into a net electric current by applying an external magnetic field. The experiments show that the spin polarization of the magnetic ion system enhances drastically the conversion process due to giant Zeeman splitting of the conduction band and spin-dependent electron scattering on localized Mn(2+) ions. PMID:19518662

Ganichev, S D; Tarasenko, S A; Bel'kov, V V; Olbrich, P; Eder, W; Yakovlev, D R; Kolkovsky, V; Zaleszczyk, W; Karczewski, G; Wojtowicz, T; Weiss, D

2009-04-17

252

THE ANISOTROPIC TRANSPORT EFFECTS ON DILUTE PLASMAS  

SciTech Connect

We examine the linear stability analysis of a hot, dilute, and differentially rotating plasma by considering anisotropic transport effects. In dilute plasmas, the ion Larmor radius is small compared with its collisional mean free path. In this case, the transport of heat and momentum along the magnetic field lines becomes important. This paper presents a novel linear instability that may be more powerful and greater than ideal magnetothermal instability and ideal magnetorotational instability in the dilute astrophysical plasmas. This type of plasma is believed to be found in the intracluster medium (ICM) of galaxy clusters and radiatively ineffective accretion flows around black holes. We derive the dispersion relation of this instability and obtain the instability condition. There is at least one unstable mode that is independent of the temperature gradient direction for a helical magnetic field geometry. This novel instability is driven by the gyroviscosity coupled with differential rotation. Therefore, we call it gyroviscous-modified magnetorotational instability (GvMRI). We examine how the instability depends on signs of the temperature gradient and the gyroviscosity and also on the magnitude of the thermal frequency and on the values of the pitch angle. We provide a detailed physical interpretation of the obtained results. The GvMRI is applicable not only to the accretion flows and ICM but also to the transition region between cool dense gas and the hot low-density plasma in stellar coronae, accretion disks, and the multiphase interstellar medium because it is independent of the temperature gradient direction.

Devlen, Ebru, E-mail: ebru.devlen@ege.edu.tr [Department of Astronomy and Space Sciences, Faculty of Science, University of Ege, Bornova 35100, Izmir (Turkey)

2011-04-20

253

Serial agonistic attacks by greylag goose families, Anser anser, against the same opponent  

PubMed Central

It is known from primates that alliance partners may support each other’s interests in competition with others, for example, through repeated agonistic attacks against a particular individual. We examined serial aggressive interactions between greylag goose families and other flock members. We found that repeated attacks towards the same individual were common and that up to five serial attacks by family members followed an initial attack. Family size did not affect the frequency of such serial attacks. Juvenile geese evidently benefited most from active social support through serial attacks. About 60% of the juveniles’ lost primary interactions were subsequently reversed by another family member. This may be one of the reasons why juveniles rank higher in the social hierarchy than would be expected from their age and size alone. Losses in serial attacks predominantly occurred against other, presumably higher-ranking, family geese and ganders. We propose three major functions/consequences of serial attacks. Analogous to primates, serial attacks in greylag geese may serve to reinforce a losing experience of an opponent defeated in a preceding attack. On the side of the winning family, serial attacks may reinforce the experience of winning. Both winning and losing experiences are linked with physiological consequences in higher vertebrates, affecting the future social performance of winners or losers. Finally, serial attacks may signal the agonistic potential of a family to other flock members. This is supported by heart rate data, which indicate that greylags are competent to interpret third-party relationships. PMID:21984838

Scheiber, Isabella B.R.; Kotrschal, Kurt; Weiss, Brigitte M.

2011-01-01

254

Computational Modelling of Particle Degradation in Dilute Phase Pneumatic Conveyors  

E-print Network

Computational Modelling of Particle Degradation in Dilute Phase Pneumatic Conveyors P. Chapellea degradation during dilute phase pneumatic conveying. A numerical procedure, based on a matrix representation. A complete model of particle degradation during dilute phase pneumatic conveying is then described, where

Christakis, Nikolaos

255

21 CFR 172.710 - Adjuvants for pesticide use dilutions.  

Code of Federal Regulations, 2010 CFR

...2009-04-01 true Adjuvants for pesticide use dilutions. 172.710 Section...Additives § 172.710 Adjuvants for pesticide use dilutions. The following surfactants...related adjuvants may be safely added to pesticide use dilutions by a grower or...

2010-04-01

256

21 CFR 172.710 - Adjuvants for pesticide use dilutions.  

Code of Federal Regulations, 2011 CFR

...2011-04-01 false Adjuvants for pesticide use dilutions. 172.710 Section...Additives § 172.710 Adjuvants for pesticide use dilutions. The following surfactants...related adjuvants may be safely added to pesticide use dilutions by a grower or...

2011-04-01

257

Serial analysis of gene expression (SAGE) in rat liver regeneration  

SciTech Connect

We have applied serial analysis of gene expression for studying the molecular mechanism of the rat liver regeneration in the model of 70% partial hepatectomy. We generated three SAGE libraries from a normal control liver (NL library: 52,343 tags), from a sham control operated liver (Sham library: 51,028 tags), and from a regenerating liver (PH library: 53,061 tags). By SAGE bioinformatics analysis we identified 40 induced genes and 20 repressed genes during the liver regeneration. We verified temporal expression of such genes by real time PCR during the regeneration process and we characterized 13 induced genes and 3 repressed genes. We found connective tissue growth factor transcript and protein induced very early at 4 h after PH operation before hepatocytes proliferation is triggered. Our study suggests CTGF as a growth factor signaling mediator that could be involved directly in the mechanism of liver regeneration induction.

Cimica, Velasco [Georg-August-University of Goettingen, Department of Gastroenterology and Endocrinology, Robert Koch Str. 40, 37075 Goettingen (Germany)]. E-mail: vcimica@aecom.yu.edu; Batusic, Danko [Georg-August-University of Goettingen, Department of Gastroenterology and Endocrinology, Robert Koch Str. 40, 37075 Goettingen (Germany); Haralanova-Ilieva, Borislava [Georg-August-University of Goettingen, Department of Gastroenterology and Endocrinology, Robert Koch Str. 40, 37075 Goettingen (Germany); Chen, Yonglong [Georg-August-University of Goettingen, Department of Developmental Biochemistry, Justus-von-Liebig-Weg 11, 37077 Goettingen (Germany); Hollemann, Thomas [Georg-August-University of Goettingen, Department of Developmental Biochemistry, Justus-von-Liebig-Weg 11, 37077 Goettingen (Germany); Pieler, Tomas [Georg-August-University of Goettingen, Department of Developmental Biochemistry, Justus-von-Liebig-Weg 11, 37077 Goettingen (Germany); Ramadori, Giuliano [Georg-August-University of Goettingen, Department of Gastroenterology and Endocrinology, Robert Koch Str. 40, 37075 Goettingen (Germany)

2007-08-31

258

Does the identification of simple features require serial processing?  

NASA Technical Reports Server (NTRS)

Several recent studies have shown performance decrements with increasing display size when background texture elements are present in a same-different feature discrimination task--a result that challenges the traditional notion that the identities of simple visual features are processed in parallel, preattentively. Four experiments are reported that explore the implications of these results. Experiment 1 replicates the recent studies but limits the generalizability of the results to small target numbers. Experiments 2 and 3 show that the observed performance decrements are not due to a serial or even limited-capacity, parallel process. Experiment 4 suggests that decision factors idiosyncratic to the use of texture elements in a same-different task are responsible for the effect. It is concluded that the identification of simple visual features proceeds in parallel, with unlimited capacity (i.e., preattentively).

Folk, C. L.; Egeth, H.

1989-01-01

259

Liquid sample delivery techniques for serial femtosecond crystallography.  

PubMed

X-ray free-electron lasers overcome the problem of radiation damage in protein crystallography and allow structure determination from micro- and nanocrystals at room temperature. To ensure that consecutive X-ray pulses do not probe previously exposed crystals, the sample needs to be replaced with the X-ray repetition rate, which ranges from 120 Hz at warm linac-based free-electron lasers to 1 MHz at superconducting linacs. Liquid injectors are therefore an essential part of a serial femtosecond crystallography experiment at an X-ray free-electron laser. Here, we compare different techniques of injecting microcrystals in solution into the pulsed X-ray beam in vacuum. Sample waste due to mismatch of the liquid flow rate to the X-ray repetition rate can be addressed through various techniques. PMID:24914163

Weierstall, Uwe

2014-07-17

260

An improved integration method in serial femtosecond crystallography.  

PubMed

Recent experiments in serial femtosecond crystallography (SFX) have demonstrated the feasibility of obtaining structural information from nanoscale crystals using X-ray free-electron lasers (XFELs). However, millions of crystals are required to determine one reliable structure. Here, an improved integration algorithm for SFX data processing is reported. By evaluating the dimensions of each crystal and correcting for the geometric factors of single patterns, the effective diffraction intensities, as opposed to the directly measured single-shot pattern diffraction intensities, can be merged to acquire more accurate integrated intensities which can be used for structure determination. This improvement enhances the quality of electron-density maps and decreases the number of diffraction patterns that are needed to solve the crystal structure in SFX experiments. PMID:24816090

Qu, Kun; Zhou, Liang; Dong, Yu-Hui

2014-05-01

261

The Fairchild MIL-STD-1553 Serial Multiplex Bus Tester  

NASA Astrophysics Data System (ADS)

The Fairchild Serial Multiplex Bus Tester (SMBT) is a general purpose computer controlled MIL-STD-1553 stimulus/response/analyzer. SMBT has been selected to fulfill the data bus testing requirements of the Air Force Modular Automatic Test Equipment (MATE) systems. The design is three separate devices or functions: a monitor, a bus controller, and a remote terminal simulator, which may be operated in any combination. The purpose is to integrate the Monitor, Controller, and Remote Terminal functions into a single unit. SMBT may be controlled and synchronized by a master computer performing a coordinated total checkout of a unit under test. The monitor allows a collection of 1024 word 'windows' of bus traffic and simultaneously accumulate error statistics in all bus traffic. A system self check is incorporated as an additional feature of the design. In summary, the SMBT is designed to provide necessary stimulus, response and analysis capability for MIL-STD-1553 Line Replaceable Unit (LRU) testing.

Dunn, A. M.

262

Closed-Loop Analysis of Soft Decisions for Serial Links  

NASA Technical Reports Server (NTRS)

Modern receivers are providing soft decision symbol synchronization as radio links are challenged to push more data and more overhead through noisier channels, and software-defined radios use error-correction techniques that approach Shannon s theoretical limit of performance. The authors describe the benefit of closed-loop measurements for a receiver when paired with a counterpart transmitter and representative channel conditions. We also describe a real-time Soft Decision Analyzer (SDA) implementation for closed-loop measurements on single- or dual- (orthogonal) channel serial data communication links. The analyzer has been used to identify, quantify, and prioritize contributors to implementation loss in real-time during the development of software defined radios.

Lansdowne, Chatwin A.; Steele, Glen F.; Zucha, Joan P.; Schlensinger, Adam M.

2012-01-01

263

Serially transplantable chemically induced rat islet cell tumor  

SciTech Connect

A serially transplantable, chemically induced pancreatic islet cell tumor was developed in Lewis rats. The original tumor was induced by the administration of streptozotocin and nicotinamide. It was subsequently maintained by ip or sc transplantation of tissue fragments into recipient animals. They were well encapsulated, without gross evidence of metastasis. Peroxidase immunocytochemical staining revealed a predominance of insulin-positive cells. Somatostatin-positive cells were also present and varied widely in numbers between different tumors. On electron microscopy, cells containing secretory granules, indistinguishable from nonneoplastic ..beta..-cells, were most abundant. Tumor extracts contained an average of 3260 ..mu..g insulin, 22.6 ..mu..g somatostatin, and 0.84 ..mu..g glucagon per g wet wt of tissue.

Chick, W.L. (Harvard Medical School, Boston, MA); Appel, M.C.; Weir, G.C.; Like, A.A.; Lauris, V.; Porter, J.G.; Chute, R.N.

1980-10-01

264

Inhibition of oil plume dilution in Langmuir ocean circulation  

NASA Astrophysics Data System (ADS)

Oil spills from deep-water blowouts rise through and interact with the ocean mixed layer and Langmuir turbulence, leading to considerable diversity of oil slick dilution patterns observed on the ocean surface. Certain conditions can drive oil droplet plumes to organize into distinct bands called windrows, inhibiting oil dilution. Observations of blurred or even diffused plumes are also common, but conditions under which these various dilution regimes emerge are not well understood. Here we use large eddy simulations to explain and quantify the dilution patterns and their dependence on relevant physical parameters. Two mechanisms, the downwelling and dilution due to Langmuir cells and the inhibition of dilution due to buoyancy of oil droplets, compete. This competition can be characterized by the ratio of Stokes drift to droplet rise velocity—the drift-to-buoyancy parameter, Db. We find that plume appearance and quantitative measures of relative dilution depend mainly on Db.

Yang, Di; Chamecki, Marcelo; Meneveau, Charles

2014-03-01

265

Dilution jet mixing program, phase 3  

NASA Technical Reports Server (NTRS)

The main objectives for the NASA Jet Mixing Phase 3 program were: extension of the data base on the mixing of single sided rows of jets in a confined cross flow to discrete slots, including streamlined, bluff, and angled injections; quantification of the effects of geometrical and flow parameters on penetration and mixing of multiple rows of jets into a confined flow; investigation of in-line, staggered, and dissimilar hole configurations; and development of empirical correlations for predicting temperature distributions for discrete slots and multiple rows of dilution holes.

Srinivasan, R.; Coleman, E.; Myers, G.; White, C.

1985-01-01

266

Effects of Domain-Specific Knowledge on Memory for Serial Order  

ERIC Educational Resources Information Center

Knowledge concerning domain-specific regularities in sequential structure has long been known to affect recall for serial order. However, very little work has been done toward specifying the exact role such knowledge plays. The present article proposes a theory of serial recall in structured domains, based on Bayesian decision theory and a set of…

Botvinick, Matthew M.

2005-01-01

267

Automated Serials Control at the Indian Institutes of Technology: An Overview  

ERIC Educational Resources Information Center

Purpose: The purpose of this paper is to highlight the functional attributes of the automated serials control systems of the libraries in seven Indian Institutes of Technology (IITs) and provide a comparative analysis. Design/methodology/approach: Features of the serials control modules of the library management systems (LMSs) in use in the…

Ghosh, Tapas Kumar; Panda, K. C.

2011-01-01

268

Theoretical consideration of female sexual predator serial killers in the United States  

Microsoft Academic Search

Sexual predators represent the embodiment of the cultural definition of serial killing. In considering the female sexual predator serial killer, a review of the limited literature found a clear distinction between women acting alone versus in partnership. Several theories offered to explain the behavior of women in teams include shared psychotic disorder, Stockholm syndrome, posttraumatic stress disorder (PTSD), battered woman

Heather Silvio; Kathy McCloskey; Julia Ramos-Grenier

2006-01-01

269

Antisocial personality disorder in serial killers: The thrill of the kill  

Microsoft Academic Search

Serial killing is a heinous crime that is difficult to understand. Sadistic serial murderers often rape, torture, and brutalize their victims before the murder even occurs. This paper addresses the motives behind such inhumane acts. By researching how the killer's abusive childhood led to the sadistic need for power and control, one can better understand how the individual developed the

Cassandra L. Simons

2001-01-01

270

Male Serial HomicideThe Influence of Cultural and Structural Variables  

Microsoft Academic Search

Psychiatric approaches have usually been used to explain male serial homicide. But multifactor explanations of the phenomenon suggest that aspects of culture and social structure may also play important roles. The current study attempts to evaluate the multifactor approach by examining whether cultural and structural variables might contribute to explaining the considerable interstate differences in the incidence of male serial

James DeFronzo; Ashley Ditta; Lance Hannon; Jane Prochnow

2007-01-01

271

Construing the Construction Processes of Serial Killers and Other Violent Offenders: 1. The Analysis of Narratives  

Microsoft Academic Search

This article presents analyses of two narratives: a book written by a serial killer, Ian Brady, and an autobiographical account written by a serially violent offender. In both cases, the narrative was subjected to a content analysis and converted to a textual grid. It is argued that narratives provide not only a means of better understanding the violent offender's view

David Winter; Guillem Feixas; Rita Dalton; Livia Jarque-Llamazares; Esteban Laso; Clare Mallindine; Sarah Patient

2007-01-01

272

Researching the multiple murderer: A comprehensive bibliography of books on specific serial, mass, and spree killers  

Microsoft Academic Search

True crime books are a useful source for researching serial killers. Unfortunately, many of these books do not include the name of the killer in the title, making it difficult to find them in a literature search. To make researching serial killers easier, we have created a comprehensive bibliography of true crime books on specific multiple murderers. This was done

Michael G. Aamodt; Christina Moyse

2003-01-01

273

The Brain's Router: A Cortical Network Model of Serial Processing in the Primate Brain  

E-print Network

The Brain's Router: A Cortical Network Model of Serial Processing in the Primate Brain Ariel-driven behavior. The precise mapping of incoming sensory stimuli onto motor representations relies on a ``router processing on hold, and a slow serial performance at the router stage, resulting in a performance bottleneck

Paris-Sud XI, Université de

274

Serial Concatenation of Interleaved Codes: Performance Analysis, Design, and Iterative Decoding  

Microsoft Academic Search

A serially concatenated code with interleaver consists of the cascade of an outer encoder, an interleaver permuting the outer codewords bits, and an inner encoder whose input words are the permuted outer codewords. The construction can be generalized to h cascaded encoders separated by h-1 interleavers. We obtain upper bounds to the average maximum-likelihood bit error probability of serially concatenated

Sergio Benedetto; Dariush Divsalar; Guido Montorsi; Fabrizio Pollara

1998-01-01

275

9 CFR 114.14 - Extension of expiration date for a serial or subserial.  

Code of Federal Regulations, 2010 CFR

...extension of the expiration date shall not exceed the maximum dating allowed in the filed Outline of Production. (1) Serials...to retest the redated serial for potency during the extended dating period and if found unsatisfactory require it be removed...

2010-01-01

276

Subject-Verb Agreement in Children and Adults: Serial or Hierarchical Processing?  

ERIC Educational Resources Information Center

Two processes, serial and hierarchical, are generally opposed to account for grammatical encoding in language production. In a developmental perspective, the question addressed here is whether the subject-verb agreement during writing is computed serially, once the words are linearly ordered in the sentence, or hierarchically, as soon as the…

Negro, Isabelle; Chanquoy, Lucile; Fayol, Michel; Louis-Sidney, Maryse

2005-01-01

277

African Americans and Serial Killing in the MediaThe Myth and the Reality  

Microsoft Academic Search

There were many expressions of shock and surprise voiced in the media in 2002 when the “D.C. Sniper” turned out to be two Black males. Two of the stereotypes surrounding serial killers are that they are almost always White males and that African American males are barely represented in their ranks. In a sample of 413 serial killers operating in

Anthony Walsh

2005-01-01

278

The Moral Responsibility of Psychopathic Serial Killers: A Case Study in Dexter  

Microsoft Academic Search

Dexter Morgan is a serial killer, but he may not be blameworthy for his actions There are two possible explanations that could absolve Dexter of moral responsibility: (1) His inability to empathize with others makes it so that he cannot make appropriate moral decisions. Or (2) his serial killing tendencies are determined in nature, set off by events of which

Matthew Hollander

2011-01-01

279

An econometric model of serial correlation and illiquidity in hedge fund returns  

Microsoft Academic Search

The returns to hedge funds and other alternative investments are often highly serially correlated. In this paper, we explore several sources of such serial correlation and show that the most likely explanation is illiquidity exposure and smoothed returns. We propose an econometric model of return smoothing and develop estimators for the smoothing profile as well as a smoothing-adjusted Sharpe ratio.

Mila Getmansky; Andrew W. Lo; Igor Makarov

2004-01-01

280

The Effect of Rate of Presentation on Digit Serial Recall in Reading Retarded Children.  

ERIC Educational Resources Information Center

This study examined the effect of presentation rate on accuracy of digit serial recall and on serial position curves of digit strings of different lengths with 18 boys classified as reading retarded and a comparison group of children (ages for both groups averaged 11 years) who read at grade level. The results indicated that normal children…

Gan, Jennifer; Tymchuk, Alexander J.

281

Neural network processing of natural language: I. Sensitivity to serial, temporal and abstract structure  

E-print Network

learning ability, and how do they depend on pre-exposure to the environment? Here we show that a neurophysiolo- gically validated temporal recurrent network simulates babies' capabilities to learn serial order birthday, babies can acquire knowledge of serial order relations (Saffran et al., 1996a), as well

Dominey, Peter F.

282

Evaluating Processing Speed in Multiple Sclerosis: A Comparison of Two Rapid Serial Processing Measures  

Microsoft Academic Search

Processing speed deficits in patients with multiple sclerosis (MS) are usually assessed with tests requiring rapid serial processing. Two such tests were compared here, the Paced Auditory Serial Addition Test (PASAT) and a computerized version of the Stroop test. The purpose of this study was to examine the concurrent validity of processing speed measures derived from the Stroop test and

Sharon G. Lynch; Kelly J. Dickerson; Douglas R. Denney

2010-01-01

283

Edinburgh Research Explorer Quantitative Serial MRI of the Treated Fibroid Uterus  

E-print Network

treatments for uterine fibroids, and non-invasive biomarkers are needed to evaluate novel therapeuticEdinburgh Research Explorer Quantitative Serial MRI of the Treated Fibroid Uterus Citation Serial MRI of the Treated Fibroid Uterus' PLoS One, vol 9, no. 3, e89809., 10.1371/journal.pone.0089809

Maizels, Rick

284

Serial position curves in short?term memory: Functional equivalence across modalities  

Microsoft Academic Search

Four experiments investigated item and order memory for sequences of seen unfamiliar faces and heard nonwords. Experiments 1 and 3 found bowed serial position curves using the serial reconstruction test of order with faces and nonwords, respectively. Experiments 2 and 4 found limited recency, no primacy, and above chance performance on all items using a two?alternative forced choice (2AFC) test

Geoff Ward; S. E. Avons; Lindsay Melling

2005-01-01

285

A Comparative Analysis of Serial Ordering in Ring-Tailed Lemurs  

Microsoft Academic Search

Research over the last 25 years has demonstrated that animals are able to organize sequences in memory and retrieve ordered sequences without language. Qualitative differences have been found between the serial organization of behavior in pigeons and monkeys. Here the authors test serial ordering abilities in ring-tailed lemurs, a strepsirrhine primate whose ancestral lineage diverged from that of monkeys, apes,

Dustin Merritt; Evan L. MacLean; Sarah Jaffe; Elizabeth M. Brannon

286

A Comparative Analysis of Serial Ordering in Ring-Tailed Lemurs (Lemur catta)  

Microsoft Academic Search

Research over the last 25 years has demonstrated that animals are able to organize sequences in memory and retrieve ordered sequences without language. Qualitative differences have been found between the serial organization of behavior in pigeons and monkeys. Here the authors test serial ordering abilities in ring-tailed lemurs, a strepsirrhine primate whose ancestral lineage diverged from that of monkeys, apes,

Dustin Merritt; Evan L. MacLean; Sarah Jaffe; Elizabeth M. Brannon

2007-01-01

287

Learning, hubris and corporate serial acquisitions Nihat Aktas, Eric de Bodt,  

E-print Network

has ensued about acquirers' motivations in mergers and acquisitions (M&A). This is most likely due2007/68 Learning, hubris and corporate serial acquisitions Nihat Aktas, Eric de Bodt, and Richard Roll #12;CORE DISCUSSION PAPER 2007/68 Learning, hubris and corporate serial acquisitions Nihat AKTAS1

Nesterov, Yurii

288

Success is good but failure is not so bad either: serial entrepreneurs and venture capital contracting*  

E-print Network

Success is good but failure is not so bad either: serial entrepreneurs and venture capital. Finally, far from getting punished for previous failures, even unsuccessful serial entrepreneurs obtain with thriving entrepreneurship in the United States. JEL Classification Code: G24 Keywords: Venture Capital

Lin, Xiaodong

289

Interference Effects in the Memory for Serially Presented Locations in Clark's Nutcrackers, Nucifraga columbiana  

Microsoft Academic Search

The authors tested the spatial memory of serially presented locations in Clark's nutcrackers (Nucifraga columbiana). Birds were serially presented with locations in an open room. The authors buried a seed in a sand-filled cup at each location and then tested nutcrackers for their memory for each location in the list by using the cluster method. For each item in the

Jody L. Lewis; Alan C. Kamil

2006-01-01

290

Analysis of Readex's Serial Set MARC Records: Improving the Data for the Library Catalog  

ERIC Educational Resources Information Center

Colorado State University Libraries (CSUL) purchased the digitized "United States Congressional Serial Set," 1817-1994 and "American State Papers" (1789-1838) from the Readex Division of NewsBank, Inc. and, once funds and records were available, the accompanying MARC records. The breadth of information found in the "Serial Set" is described, along…

Draper, Daniel; Lederer, Naomi

2013-01-01

291

Using Signal Detection Theory to Model Changes in Serial Learning of Radiological Image Interpretation  

ERIC Educational Resources Information Center

Signal detection theory (SDT) parameters can describe a learner's ability to discriminate (d[prime symbol]) normal from abnormal and the learner's criterion ([lambda]) to under or overcall abnormalities. To examine the serial changes in SDT parameters with serial exposure to radiological cases. 46 participants were recruited for this study: 20…

Boutis, Kathy; Pecaric, Martin; Seeto, Brian; Pusic, Martin

2010-01-01

292

The relationship between serial monogamy and rape in the United States (19601995)  

E-print Network

The relationship between serial monogamy and rape in the United States (1960­1995) Philip T. Starks cannot secure females through traditional methods may seek alternatives, such as rape, to ensure gene) rates of divorce and rape correlate positively. The former result suggests that serial monogamy

Starks, Philip

293

Characterization of regional pulmonary mechanics from serial magnetic resonance imaging data 1  

Microsoft Academic Search

Rationale and Objectives. The aim of this study was to investigate a method for quantifying lung motion from the registration of successive images in serial magnetic resonance imaging acquisitions during normal respiration.Materials and Methods. Estimates of pulmonary motion were obtained by summing the normalized cross-correlation over serially acquired lung images to identify corresponding locations between the images. The estimated motions

James Gee; Tessa Sundaram; Ichiro Hasegawa; Hidemasa Uematsu; Hiroto Hatabu

2003-01-01

294

Comparing the Criminal History Profiles of Serial and Single-Victim Homicide Offenders  

Microsoft Academic Search

Few studies have compared single and serial homicide offenders' criminal histories. To understand more completely how these offenders differ, Multidimensional Scalogram Analysis (MSA) is used to compare single and serial homicide offenders' profiles comprised of ten prior offending variables. The profiles of offenders overall co-occurred in four thematic groupings that were differentiated by the type of violent offenses contained in

Carrie Trojan; C. Gabrielle Salfati

2010-01-01

295

Optimal Allocation of Heat Exchanger Inventory in a Serial Type Diabatic Distillation Column  

E-print Network

Optimal Allocation of Heat Exchanger Inventory in a Serial Type Diabatic Distillation Column Edward the column . We have previously shown (Jimenez et al. 2003) that optimaloperation of serial heat exchangers total heat exchanger area in different trays and calculate the optimal allocation of a given heat

Salamon, Peter

296

Nonlinear registration of serial coronary CT angiography (CCTA) for assessment of changes in atherosclerotic plaque  

E-print Network

Nonlinear registration of serial coronary CT angiography (CCTA) for assessment of changes by the American Association of Physicists in Medicine #12;Nonlinear registration of serial coronary CT angiography 2010 Purpose: Coronary CT angiography CCTA is a high-resolution three-dimensional imaging tech- nique

Kuo, C.-C. "Jay"

297

Voxel Similarity Measures for 3D Serial MR Brain Image Registration  

Microsoft Academic Search

We have evaluated eight different similarity measures used for rigid body registration of serial magnetic resonance (MR) brain scans. To assess their accuracy we used 33 clinical three- dimensional (3-D) serial MR images, with deformable extradural tissue excluded by manual segmentation and simulated 3-D MR images with added intensity distortion. For each measure we deter- mined the consistency of registration

Mark Holden; Derek L. G. Hill; Erika R. E. Denton; Jo M. Jarosz; Tim C. S. Cox; Torsten Rohlfing; Joanne Goodey; David J. Hawkes

2000-01-01

298

Organization of visuo-spatial serial memory: interaction of temporal order with spatial and temporal grouping  

Microsoft Academic Search

This study investigates whether memory for sequences of spatial locations can be represented hierarchically, that is, as successive groups containing the order of constituent locations. Two grouping manipulations are used: Temporal grouping, based on the verbal serial memory literature, and spatial grouping, based on recent empirical work on visuo-spatial serial memory. In Experiment 1, we examine the relationship between spatial grouping

Fabrice B. R. Parmentier; Pilar Andrés; Greg Elford; Dylan M. Jones

2006-01-01

299

Save the last dance for me: unwanted serial position effects in jury evaluations.  

PubMed

Whenever competing options are considered in sequence, their evaluations may be affected by order of appearance. Such serial position effects would threaten the fairness of competitions using jury evaluations. Randomization cannot reduce potential order effects, but it does give candidates an equal chance of being assigned to preferred serial positions. Whether, or what, serial position effects emerge may depend on the cognitive demands of the judgment task. In end-of-sequence procedures, final scores are not given until all candidates have performed, possibly burdening judges' memory. If judges' evaluations are based on how well they remember performances, serial position effects may resemble those found with free recall. Candidates may also be evaluated step-by-step, immediately after each performance. This procedure should not burden memory, though it may produce different serial position effects. Yet, this paper reports similar serial position effects with end-of-sequence and step-by-step procedures used for the Eurovision Song Contest: Ratings increased with serial position. The linear order effect was replicated in the step-by-step judgments of World and European Figure Skating Contests. It is proposed that, independent of the evaluation procedure, judges' initial impressions of sequentially appearing candidates may be formed step-by-step, yielding serial position effects. PMID:15698823

Bruine de Bruin, Wändi

2005-03-01

300

Binding Serial Order to Representations in Working Memory: a Spatial/Verbal Dissociation  

PubMed Central

Verbal information is coded naturally as ordered representations in working memory (WM). However, this may not be true for spatial information. Accordingly, we used memory-span tasks to test the hypothesis that serial order is more readily bound to verbal than to spatial representations. Removing serial-order requirements improved performance more for spatial locations than for digits. Furthermore, serial order was freely reproduced twice as frequently for digits as for locations. When participants reordered spatial sequences, they minimized the mean distance between items. Participants also failed to detect changes in serial order more frequently for spatial than for verbal sequences. These results provide converging evidence for a dissociation in the binding of serial order to spatial vs. verbal representations. There may be separable domain-specific control processes responsible for this binding. Alternatively, there may be fundamental differences in how effectively temporal information can be bound to different types of stimulus features in WM. PMID:21264629

Gmeindl, Leon; Walsh, Megan; Courtney, Susan M.

2011-01-01

301

Dilute Potts model in two dimensions  

NASA Astrophysics Data System (ADS)

We study the two-dimensional dilute q -state Potts model by means of transfer-matrix and Monte Carlo methods. Using the random-cluster representation, we include noninteger values of q . We locate phase transitions in the three-dimensional parameter space of q , the Potts coupling K?0 , and the chemical potential of the vacancies. The critical plane is found to contain a line of fixed points that divides into a critical branch and a tricritical one, just as predicted by the renormalization scenario formulated by Nienhuis for the dilute Potts model. The universal properties along the line of fixed points agree with the theoretical predictions. We also determine the density of the vacancies along these branches. For q=2-2 we obtain the phase diagram in a three-dimensional parameter space that also includes a coupling V?0 between the vacancies. For q=2 , the latter space contains the Blume-Capel model as a special case. We include a determination of the tricritical point of this model, as well as an analysis of percolation clusters constructed on tricritical Potts configurations for noninteger q . This percolation study is based on Monte Carlo algorithms that include local updates flipping between Potts sites and vacancies. The bond updates are performed locally for q<1 and by means of a cluster algorithm for q>1 . The updates for q>1 use a number of operations per site independent of the system size.

Qian, Xiaofeng; Deng, Youjin; Blöte, Henk W. J.

2005-11-01

302

Geometric Exponents of Dilute Loop Models  

NASA Astrophysics Data System (ADS)

The fractal dimensions of the hull, the external perimeter and of the red bonds are measured through Monte Carlo simulations for dilute minimal models, and compared with predictions from conformal field theory and SLE methods. The dilute models used are those first introduced by Nienhuis. Their loop fugacity is ?=-2 \\cos(?/bar{kappa}) where the parameter bar{kappa} is linked to their description through conformal loop ensembles. It is also linked to conformal field theories through their central charges c(bar{kappa})=13-6(bar{kappa}+bar{kappa}^{-1}) and, for the minimal models of interest here, bar{kappa}=p/p' where p and p' are two coprime integers. The geometric exponents of the hull and external perimeter are studied for the pairs ( p, p')=(1,1),(2,3),(3,4),(4,5),(5,6),(5,7), and that of the red bonds for ( p, p')=(3,4). Monte Carlo upgrades are proposed for these models as well as several techniques to improve their speeds. The measured fractal dimensions are obtained by extrapolation on the lattice size H, V??. The extrapolating curves have large slopes; despite these, the measured dimensions coincide with theoretical predictions up to three or four digits. In some cases, the theoretical values lie slightly outside the confidence intervals; explanations of these small discrepancies are proposed.

Provencher, Guillaume; Saint-Aubin, Yvan; Pearce, Paul A.; Rasmussen, Jørgen

2012-04-01

303

ANALYSIS OF BORON DILUTION TRANSIENTS IN PWRS.  

SciTech Connect

A study has been carried out with PARCS/RELAP5 to understand the consequences of hypothetical boron dilution events in pressurized water reactors. The scenarios of concern start with a small-break loss-of-coolant accident. If the event leads to boiling in the core and then the loss of natural circulation, a boron-free condensate can accumulate in the cold leg. The dilution event happens when natural circulation is re-established or a reactor coolant pump (RCP) is restarted in violation of operating procedures. This event is of particular concern in B&W reactors with a lowered-loop design and is a Generic Safety Issue for the U.S. Nuclear Regulatory Commission. The results of calculations with the reestablishment of natural circulation show that there is no unacceptable fuel damage. This is determined by calculating the maximum fuel pellet enthalpy, based on the three-dimensional model, and comparing it with the criterion for damage. The calculation is based on a model of a B&W reactor at beginning of the fuel cycle. If an RCP is restarted, unacceptable fuel damage may be possible in plants with sufficiently large volumes of boron-free condensate in the cold leg.

DIAMOND,D.J.BROMLEY,B.P.ARONSON,A.L.

2004-02-04

304

Motor-mediated microtubule self-organization in dilute and semi-dilute filament solutions.  

SciTech Connect

We study molecular motor-induced microtubule self-organization in dilute and semi-dilute filament solutions. In the dilute case, we use a probabilistic model of microtubule interaction via molecular motors to investigate microtubule bundle dynamics. Microtubules are modeled as polar rods interacting through fully inelastic, binary collisions. Our model indicates that initially disordered systems of interacting rods exhibit an orientational instability resulting in spontaneous ordering. We study the existence and dynamic interaction of microtubule bundles analytically and numerically. Our results reveal a long term attraction and coalescing of bundles indicating a clear coarsening in the system; microtubule bundles concentrate into fewer orientations on a slow logarithmic time scale. In semi-dilute filament solutions, multiple motors can bind a filament to several others and, for a critical motor density, induce a transition to an ordered phase with a nonzero mean orientation. Motors attach to a pair of filaments and walk along the pair bringing them into closer alignment. We develop a spatially homogenous, mean-field theory that explicitly accounts for a force-dependent detachment rate of motors, which in turn affects the mean and the fluctuations of the net force acting on a filament. We show that the transition to the oriented state can be both continuous and discontinuous when the force-dependent detachment of motors is important.

Swaminathan, S.; Ziebert, F.; Aranson, I. S.; Karpeev, D. (Mathematics and Computer Science); ( MSD); (Northwestern Univ.); (UMR CNRS)

2011-01-01

305

Highly Sensitive Detection of Small Ruminant Bovine Spongiform Encephalopathy within Transmissible Spongiform Encephalopathy Mixes by Serial Protein Misfolding Cyclic Amplification.  

PubMed

It is assumed that sheep and goats consumed the same bovine spongiform encephalopathy (BSE)-contaminated meat and bone meal that was fed to cattle and precipitated the BSE epidemic in the United Kingdom that peaked more than 20 years ago. Despite intensive surveillance for cases of BSE within the small ruminant populations of the United Kingdom and European Union, no instances of BSE have been detected in sheep, and in only two instances has BSE been discovered in goats. If BSE is present within the small ruminant populations, it may be at subclinical levels, may manifest as scrapie, or may be masked by coinfection with scrapie. To determine whether BSE is potentially circulating at low levels within the European small ruminant populations, highly sensitive assays that can specifically detect BSE, even within the presence of scrapie prion protein, are required. Here, we present a novel assay based on the specific amplification of BSE PrP(Sc) using the serial protein misfolding cyclic amplification assay (sPMCA), which specifically amplified small amounts of ovine and caprine BSE agent which had been mixed into a range of scrapie-positive brain homogenates. We detected the BSE prion protein within a large excess of classical, atypical, and CH1641 scrapie isolates. In a blind trial, this sPMCA-based assay specifically amplified BSE PrP(Sc) within brain mixes with 100% specificity and 97% sensitivity when BSE agent was diluted into scrapie-infected brain homogenates at 1% (vol/vol). PMID:25143565

Gough, Kevin C; Bishop, Keith; Maddison, Ben C

2014-11-01

306

Quantitative Serial MRI of the Treated Fibroid Uterus  

PubMed Central

Objective There are no long-term medical treatments for uterine fibroids, and non-invasive biomarkers are needed to evaluate novel therapeutic interventions. The aim of this study was to determine whether serial dynamic contrast-enhanced MRI (DCE-MRI) and magnetization transfer MRI (MT-MRI) are able to detect changes that accompany volume reduction in patients administered GnRH analogue drugs, a treatment which is known to reduce fibroid volume and perfusion. Our secondary aim was to determine whether rapid suppression of ovarian activity by combining GnRH agonist and antagonist therapies results in faster volume reduction. Methods Forty women were assessed for eligibility at gynaecology clinics in the region, of whom thirty premenopausal women scheduled for hysterectomy due to symptomatic fibroids were randomized to three groups, receiving (1) GnRH agonist (Goserelin), (2) GnRH agonist+GnRH antagonist (Goserelin and Cetrorelix) or (3) no treatment. Patients were monitored by serial structural, DCE-MRI and MT-MRI, as well as by ultrasound and serum oestradiol concentration measurements from enrolment to hysterectomy (approximately 3 months). Results A volumetric treatment effect assessed by structural MRI occurred by day 14 of treatment (9% median reduction versus 9% increase in untreated women; P?=?0.022) and persisted throughout. Reduced fibroid perfusion and permeability assessed by DCE-MRI occurred later and was demonstrable by 2–3 months (43% median reduction versus 20% increase respectively; P?=?0.0093). There was no apparent treatment effect by MT-MRI. Effective suppression of oestradiol was associated with early volume reduction at days 14 (P?=?0.041) and 28 (P?=?0.0061). Conclusion DCE-MRI is sensitive to the vascular changes thought to accompany successful GnRH analogue treatment of uterine fibroids and should be considered for use in future mechanism/efficacy studies of proposed fibroid drug therapies. GnRH antagonist administration does not appear to accelerate volume reduction, though our data do support the role of oestradiol suppression in GnRH analogue treatment of fibroids. Trial Registration ClinicalTrials.gov NCT00746031 PMID:24608161

Williams, Alistair R. W.; McKillop, Graham; Walker, Jane; Horne, Andrew W.; Newby, David E.; Anderson, Richard A.; Semple, Scott I.; Marshall, Ian; Lewis, Steff C.; Millar, Robert P.; Bastin, Mark E.; Critchley, Hilary O. D.

2014-01-01

307

Serial Monitoring of Endogenous Neuroblast Migration by Cellular MRI  

PubMed Central

Endogenous neural progenitor cell migration in vivo can be monitored using MRI-based cell tracking. The current protocol is that micron sized iron oxide particles (MPIOs) are injected into the lateral ventricle proximal to the neural stem cell niche in the brain. MPIOs are endocytosed and incorporated into the neural progenitor cell population, making them visible by gradient echo MRI. Here this new method is extended to serially quantify cell migration. Initially, in vivo cell labeling methodologies were optimized, as high susceptibility effects from the MPIOs generate substantial signal loss around the injection site, masking early migratory events. Then, using improved labeling conditions, a longitudinal study was conducted over two weeks to quantify the migration of labeled progenitor cells towards the olfactory bulb (OB). By 3 days following injection, we calculated 0.26 % of the volume of the OB containing labeled cells. By 8 days, this volume nearly doubled to 0.49% and plateaued. These MRI results are in accordance with our data on iron quantification from the OB and with those from purely immunohistochemical studies. PMID:21571076

Granot, Dorit; Scheinost, Dustin; Markakis, Eleni A.; Papademetris, Xenios; Shapiro, Erik M.

2011-01-01

308

Analysis of longitudinal count data with serial correlation.  

PubMed

We propose a state space model for analyzing equally or unequally spaced longitudinal count data with serial correlation. With a log link function, the mean of the Poisson response variable is a nonlinear function of the fixed and random effects. The random effects are assumed to be generated from a Gaussian first order autoregression (AR(1)). In this case, the mean of the observations has a log normal distribution. We use a combination of linear and nonlinear methods to take advantage of the Gaussian process embedded in a nonlinear function. The state space model uses a modified Kalman filter recursion to estimate the mean and variance of the AR(1) random error given the previous observations. The marginal likelihood is approximated by numerically integrating out the AR(1) random error. Simulation studies with different sets of parameters show that the state space model performs well. The model is applied to Epileptic Seizure data and Primary Care Visits Data. Missing and unequally spaced observations are handled naturally with this model. PMID:17623346

Xu, Stanley; Jones, Richard H; Grunwald, Gary K

2007-06-01

309

LabVIEW Serial Driver Software for an Electronic Load  

NASA Technical Reports Server (NTRS)

A LabVIEW-language computer program enables monitoring and control of a Transistor Devices, Inc., Dynaload WCL232 (or equivalent) electronic load via an RS-232 serial communication link between the electronic load and a remote personal computer. (The electronic load can operate at constant voltage, current, power consumption, or resistance.) The program generates a graphical user interface (GUI) at the computer that looks and acts like the front panel of the electronic load. Once the electronic load has been placed in remote-control mode, this program first queries the electronic load for the present values of all its operational and limit settings, and then drops into a cycle in which it reports the instantaneous voltage, current, and power values in displays that resemble those on the electronic load while monitoring the GUI images of pushbuttons for control actions by the user. By means of the pushbutton images and associated prompts, the user can perform such operations as changing limit values, the operating mode, or the set point. The benefit of this software is that it relieves the user of the need to learn one method for operating the electronic load locally and another method for operating it remotely via a personal computer.

Scullin, Vincent; Garcia, Christopher

2003-01-01

310

Serial DNA immobilization in micro- and extended nanospace channels.  

PubMed

That focused arrays, even with a small set of ligands, provide more data than single point experiments is well established in the DNA microarray research field, but microarray technology has yet to be transferred to fused silica microchips. Fused silica microchips have several attractive features such as stability to pressure, solvents, acids and bases, and can be fabricated with minute dimensions, making them good candidates for nanofluidic research. However, due to harsh bonding conditions, DNA ligands must be immobilized after fabrication, thus preventing standard microarray spotting techniques from being used. In this paper, we provide tools for serial DNA immobilization in fused silica microchips using UV. We report the synthesis of a new UV-linker which was used to covalently couple functional DNA oligos to the inside of channels in fused silica microchips. With some simple modifications to our mask aligner, we were able to transfer OHP mask patterns, which allows the creation of basically any pattern in the channels. The functionality of the oligos was measured through the binding of fluorophore-labeled complementary target oligos. We examined parameters influencing DNA immobilization, and carry-over between spots after consecutive immobilizations inside the same channel. We also report the first successful multiple immobilizations of functional DNA oligos inside single channels of extended nanospace depth (460 nm). PMID:19458857

Renberg, Björn; Sato, Kae; Mawatari, Kazuma; Idota, Naokazu; Tsukahara, Takehiko; Kitamori, Takehiko

2009-06-01

311

Serial Echocardiography in Very Preterm Infants: A Pilot Randomized Trial  

PubMed Central

Aim To determine whether routine echocardiography increases diagnosis and treatment of patent ductus arteriosus (PDA) and whether randomized non-disclosure is a feasible strategy for studying PDA management. Methods 2 center pilot randomized, controlled trial. 88 infants with birth weights ?1250 grams and gestational ages ?30 weeks were randomized to disclosure or non-disclosure of serial echocardiogram findings. Echocardiograms were performed at 3–5 and 7–10 days of life. The primary outcome was time to regain birth weight. Results 100% of echocardiograms in the disclosure group were disclosed; 16% (echocardiogram #1) and 29% (echocardiogram #2) were disclosed in the non-disclosure group. There was a statistically non-significant decrease in drug therapy for PDA in the non-disclosure group (adjusted odds ratio [AOR] 0.56, 95% confidence interval [CI] 0.24–1.34). There was no difference in time to regain birth weight or in other important neonatal outcomes. However, infants in the non-disclosure group were more likely to demonstrate appropriate weight loss and then regain birth weight within 7–14 days (AOR 2.64, 95% CI 1.08–6.44). Conclusion Randomized non-disclosure of echocardiograms is a feasible strategy for evaluation of approaches to PDA management in very preterm infants. Avoidance of routine echocardiography may reduce drug therapy for PDA without adverse clinical effects. PMID:23952100

DeMauro, Sara B.; Cohen, Meryl S.; Ratcliffe, Sarah J.; Abbasi, Soraya; Schmidt, Barbara

2013-01-01

312

Automated segmentation of alloy microstructures in serial section images  

NASA Astrophysics Data System (ADS)

This paper describes the application of the expectation-maximization/maximization of the posterior marginals (EM/MPM) algorithm to serial section images, which inherently represent three dimensional (3D) data. The images of interest are electron micrographs of cross sections of a titanium alloy. To improve the accuracy of the resulting segmentation images, the images are pre-filtered before being used as input to the EM/MPM algorithm. The output of the pre-filter at a particular pixel represents an estimate of the entropy at that pixel, based on the grayscale values of neighboring pixels. This filter tends to be biased towards higher entropy values if an edge is present within the window being used. This causes edges in the final segmentation to move out from higher entropy regions and into lower entropy regions. In order to preserve the locations of these edges, a multiscale technique involving the use of an adaptive filter window has been developed. We present experimental results demonstrating the application of this technique.

Dumke, Joel M.; Comer, Mary L.

2007-02-01

313

Serial postmortem thoracic radiographic findings in canine cadavers.  

PubMed

Postmortem radiographic examinations of animals are often performed in judicial investigation to rule out gunshot and fractures due to cruelty. Literature describing postmortem changes seen on radiographs of animals is rarely available. Serial thoracic radiography of six recently euthanized dogs was performed in an interval of 8 h at a tropical ambient temperature of 22-33 degrees C. Severe decomposition of the cadavers prevented the study to be performed beyond 24 h. Gradual increment of gas accumulation in the pleural cavity, mediastinum, esophagus, blood vessels, cardiac chambers and subcutaneous tissue was observed. Lung changes observed were typical of alveolar pattern and subsequently collapsed secondary to severe pneumothorax. Vacuum phenomenon of the scapulohumeral joints which was not documented in humans was seen in four cadavers. Most radiographic changes were detected at 16 h post-euthanasia. Severe subcutaneous emphysema developed between 16 and 24 h post-euthanasia. This study showed that rapid postmortem changes which could be detected radiographically occur within 24 h of death at the ambient temperature of 22-33 degrees C. PMID:19394170

Heng, Hock Gan; Selvarajah, Gayathri Thevi; Lim, Hiang Tee; Ong, Jin Seng; Lim, Jiehan; Ooi, Jin Tatt

2009-07-01

314

Serial postmortem abdominal radiographic findings in canine cadavers.  

PubMed

Postmortem radiographic examinations of animals are often performed in judicial investigation to rule out gunshot and fractures due to cruelty or illegal hunting or poaching activities. Literature describing postmortem changes seen on radiographs of animals is rarely available. Serial abdominal radiography of 6 recently euthanized dogs were performed in an interval of 8h at a tropical ambient temperature of 22-33 degrees C. Severe decomposition of the cadavers prevented the study to be performed beyond 24h. Gradual increment of gas accumulation in the gastrointestinal tract, liver, spleen, kidney and blood vessels were observed. Increased amount of gas in the gastrointestinal tract was detected as early as 8h post-euthanasia and continuously increased throughout the study. Gas was seen in the portal vein and caudal vena cava of all cadavers at 16h post-euthanasia. The presence of gas in the aorta occurred at a later stage. Tubular branching gas pattern in the liver and spleen was first observed and progressed to vesicular gas pattern due to tissue decomposition. This study showed that abdominal radiographic postmortem changes occurred most rapidly between 8 and 16h post-euthanasia at the ambient temperature of 22-33 degrees C. PMID:19716666

Heng, Hock Gan; Selvarajah, Gayathri Thevi; Lim, Hiang Tee; Ong, Jin Seng; Lim, Jiehan; Ooi, Jin Tatt

2009-11-20

315

Characterization of the Dilute Ising Antiferromagnet  

SciTech Connect

A spin glass is a magnetic ground state in which ferromagnetic and antiferromagnetic exchange interactions compete, thereby creating frustration and a multidegenerate state with no long range order. An Ising system is a system where the spins are constrained to lie parallel or antiparallel to a primary axis. There has been much theoretical interest in the past ten years in the effects of applying a magnetic field transverse to the primary axis in an Ising spin glass at low temperatures and thus study phase transitions at the T=0 limit. The focus of this study is to search for and characterize a new Ising spin glass system. This is accomplished by site diluting yttrium for terbium in the crystalline material TbNi{sub 2}Ge{sub 2}. The first part of this work gives a brief overview of the physics of rare earth magnetism and an overview of experimental characteristics of spin glasses. This is followed by the methodology used to manufacture the large single crystals used in this study, as well as the measurement techniques used. Next, a summary of the results of magnetic measurements on across the dilution series from pure terbium to pure yttrium is presented. This is followed by detailed measurements on particular dilutions which demonstrate spin glass behavior. Pure TbNi{sub 2}Ge{sub 2} is an Ising antiferromagnet with a several distinct metamagnetic states below 17 K. As the terbium is alloyed with yttrium, these magnetic states are weakened in a consistent manner, as is seen in measurements of the transition temperatures and analysis of Curie-Weiss behavior at high temperature. At low concentrations of terbium, below 35%, long range order is no longer present and a spin-glass-like state emerges. This state is studied through various measurements, dc and ac susceptibility, resistivity, and specific heat. This magnetic behavior was then compared to that of other well characterized spin glasses. It is concluded that there is a region of concentration s for which a spin glass state is formed with the best spin glasses existing between the concentration of 25% and 30%.

Wiener, T.

2000-09-12

316

Do spatial effects appear at low dilution rate in chemostat?  

Microsoft Academic Search

The chemostat theory on two species competition has shown that the dilution rate where transition of dominance occurs – transition-dilution rate – is independent of limiting-nutrient concentration. However, we obtained the experimental data indicating that the transition-dilution rate changed with variations in limiting-ammonium concentrations, using the chemostat mixed-culture of the cyanobacterium Microcystis novacekii and the green alga Scenedesmus quadricauda. The

Tatsuo Miyazaki; Tatsuya Togashi; Nariyuki Nakagiri; Yukio Sakisaka; Kei-ichi Tainaka; Jin Yoshimura

2009-01-01

317

Natural born killers?: the development of the sexually sadistic serial killer.  

PubMed

Today's society seems enthralled with serial killers in the news and the media. Forensic psychiatrists often interview serial killers after they have been caught. There are retrospective studies and case reports of individuals who have committed sexually sadistic serial murders. However, there exists a dearth of case reports on adolescents who have expressed serious fantasies about becoming serial killer prior to actualizing their fantasy. This article presents nine clinical cases of 14- to 18-year-olds who have clinically significant fantasies of becoming a serial killer. Similarities exist in these adolescent cases when compared with retrospective studies and case reports of serial killers on the role of sexually sadistic fantasies and actual killings. Since it has been established that sexual paraphilias may develop at a young age, one can surmise that sadistic paraphilias may also develop in some adolescents. The question is posed, can we predict which of these adolescents may go on to actually become serial killers? This article focuses on how the sexually sadistic fantasy can eventually be acted out and possible motives for the act to be repeated multiple times. Finally, recommendations are made about assessing and treating a youngster who expresses violent sexually sadistic killing fantasies so that attempts can be made to interrupt the progression to actual killing. PMID:9323659

Johnson, B R; Becker, J V

1997-01-01

318

Exploiting Points-to Maps for De-/Serialization Code Generation  

SciTech Connect

Serialization code generators for C++ have restrictions on the implementation of dynamic arrays and void/function pointers. If the target program is not implemented with these restrictions, de- velopers have to manually change the source code to facilitate se- rialization code generation. Unfortunately, such changes hamper the benefits of code generation, and they are not localized. This pa- per presents the de-/serialization code generator Ser++ that does not restrict the implementation of these pointer types and, hence, eliminates the need to adapt the source code for serialization code generation. Ser++ can be considered an aspect weaver that i) traces the pointers, ii) identifies the statements in which properties regard- ing the serialization of pointer attributes can be extracted and, finally, iii) weaves the code to store these properties at runtime. It generates the de-/serialization functions in such a way that they serialize the pointer attributes according to the stored values of the properties. We have successfully used Ser++ to generate de- /serialization methods for a computer architecture and a power- flow simulator, without any modifications to the existing source code.

Ciraci, Selim; Villa, Oreste

2013-03-18

319

Serial intervals of respiratory infectious diseases: a systematic review and analysis.  

PubMed

The serial interval of an infectious disease represents the duration between symptom onset of a primary case and symptom onset of its secondary cases. A good evidence base for such values is essential, because they allow investigators to identify epidemiologic links between cases and serve as an important parameter in epidemic transmission models used to design infection control strategies. We reviewed the literature for available data sets containing serial intervals and for reported values of serial intervals. We were able to collect data on outbreaks within households, which we reanalyzed to infer a mean serial interval using a common statistical method. We estimated the mean serial intervals for influenza A(H3N2) (2.2 days), pandemic influenza A(H1N1)pdm09 (2.8 days), respiratory syncytial virus (7.5 days), measles (11.7 days), varicella (14.0 days), smallpox (17.7 days), mumps (18.0 days), rubella (18.3 days), and pertussis (22.8 days). For varicella, we found an evidence-based value that deviates substantially from the 21 days commonly used in transmission models. This value of the serial interval for pertussis is, to the best of our knowledge, the first that is based on observations. Our review reveals that, for most infectious diseases, there is very limited evidence to support the serial intervals that are often cited. PMID:25294601

Vink, Margaretha Annelie; Bootsma, Martinus Christoffel Jozef; Wallinga, Jacco

2014-11-01

320

Dilution Jet Mixing Program, phase 1  

NASA Technical Reports Server (NTRS)

The effect of jet to mainstream density ratio, flow area convergence as encounted in transition sections, and nonuniform mainstream profile upstream of dilution orifices on the mixing of a row of jets with a confined cross flow was quantified. It is found that: (1) jet spreading rate in transverse direction is increased with increasing J, H/D and with decreasing S/D; (2) the density ratio has only a second order effect on the jet mixing characteristics for a constant momentum ratio; (3) the temperature distributions in the jet mixing region are strongly influenced by the undisturbed mainstream profile; (4) flow area convergence enhances mixing in radial and transverse directions. An asymmetric convergent duct with flat wall injection has the same jet mixing characteristics as a symmetric convergent duct. An asymmetric convergent duct with slant wall injection has a faster jet spreading rate in the transverse direction.

Srinivasan, R.; Berenfeld, A.; Mongia, H. C.

1982-01-01

321

Fiber-tunable dilute-nitride VCSEL  

NASA Astrophysics Data System (ADS)

We report the single-mode operation and characterization of a 1.3-?m hybrid-fiber-tunable GaInNAs VCSEL. Results show that at room-temperature the device can be continuously tuned over 18.5-nm with output power up to 0.23-mW. Coupled-cavity effects were found to be a limiting factor for the tuning range. This device not only opens up potential applications in the physics of light-matter interaction, sensing and optical communications where it will, eventually, compete with InP-based VCSEL, but it is also a first step toward a tunable dilute-nitride vertical-cavity amplifier.

Laurand, N.; Calvez, S.; Dawson, M. D.; Jouhti, T.; Konttinen, J.; Pessa, M.

2005-11-01

322

Delay of Disorder by Diluted Polymers  

E-print Network

We study the effect of diluted flexible polymers on a disordered capillary wave state. The waves are generated at an interface of a dyed water sugar solution and a low viscous silicon oil. This allows for a quantitative measurement of the spatio-temporal Fourier spectrum. The primary pattern after the first bifurcation from the flat interface are squares. With increasing driving strength we observe a melting of the square pattern. It is replaced by a weak turbulent cascade. The addition of a small amount of polymers to the water layer does not affect the critical acceleration but shifts the disorder transition to higher driving strenghs and the short wave length - high frequency fluctuations are suppressed.

Kityk, A V

2005-01-01

323

The Mann-Kendall Test Modified by Effective Sample Size to Detect Trend in Serially Correlated Hydrological Series  

Microsoft Academic Search

The non-parametric Mann-Kendall (MK) statistical test has been popularly used to assess the significance of trend in hydrological time series. The test requires sample data to be serially independent. When sample data are serially correlated, the presence of serial correlation in time series will affect the ability of the test to correctly assess the significance of trend. To eliminate the

Sheng Yue; ChunYuan Wang

2004-01-01

324

Serial myocardial perfusion imaging: defining a significant change and targeting management decisions.  

PubMed

Myocardial perfusion imaging (MPI) with gated single-photon emission tomography provides important information on the extent and severity of myocardial perfusion abnormalities, including myocardial ischemia. The availability of software for automated quantitative assessment of myocardial perfusion in an objective and more reproducible manner than visual assessment has allowed MPI to be particularly effective in serial evaluation. Serial testing using MPI is widely used in guiding patient care despite the lack of well-defined appropriateness use criteria. This should not be surprising because ischemic heart disease is a life-long malady subject to dynamic changes throughout its natural course and particularly following man-made interventions that may improve or worsen the disease process, such as medical therapy and coronary revascularization. Serial MPI has filled an important clinical gap by providing crucial information for managing patients with changes in clinical presentations or in anticipation of such changes in patients with stable symptoms. In the research arena, serial MPI has been widely applied in randomized controlled trials to study the impact of various medical and interventional therapies on myocardial perfusion, as well as the relative merits of new imaging procedures (hardware and/or software), radiotracers, and stressor agents. Serial testing, however, unlike initial or 1-time testing, has more stringent requirements and is subject to variability because of technical, procedural, interpretational, and biological factors. The intrinsic variability of MPI becomes important in interpreting serial tests in order to define a true change in a given patient and to guide clinical decision making. The purpose of this first comprehensive review on this subject is to illustrate where serial MPI may be useful clinically and in research studies, and to highlight strategies for addressing the various issues that are unique to serial testing in order to derive more valid and robust data from the serial scans. PMID:24433711

Iskandrian, Ami E; Hage, Fadi G; Shaw, Leslee J; Mahmarian, John J; Berman, Daniel S

2014-01-01

325

Dilute Oxygen Combustion Phase 3 Final Report  

SciTech Connect

Dilute Oxygen Combustion (DOC) burners have been successfully installed and operated in the reheat furnace at Auburn Steel Co., Inc., Auburn, NY, under Phase 3 of the Dilute Oxygen Combustion project. Two new preheat zones were created employing a total of eight 6.5 MMBtu/hr capacity burners. The preheat zones provide a 30 percent increase in maximum furnace production rate, from 75 tph to 100 tph. The fuel rate is essentially unchanged, with the fuel savings expected from oxy-fuel combustion being offset by higher flue gas temperatures. When allowance is made for the high nitrogen level and high gas phase temperature in the furnace, measured NOx emissions are in line with laboratory data on DOC burners developed in Phase 1 of the project. Burner performance has been good and there have been no operating or maintenance problems. The DOC system continues to be used as part of Auburn Steel?s standard reheat furnace practice. High gas phase temperature is a result of the high firing density needed to achieve high production rates, and little opportunity exists for improvement in that area. However, fuel and NOx performance can be improved by further conversion of furnace zones to DOC burners, which will lower furnace nitrogen levels. Major obstacles are cost and concern about increased formation of oxide scale on the steel. Oxide scale formation may be enhanced by exposure of the steel to higher concentrations of oxidizing gas components (primarily products of combustion) in the higher temperature zones of the furnace. Phase 4 of the DOC project will examine the rate of oxide scale formation in these higher temperature zones and develop countermeasures that will allow DOC burners to be used successfully in these furnace zones.

Riley, M.F.; Ryan, H.M.

2000-05-31

326

Dilute Oxygen Combustion - Phase 3 Report  

SciTech Connect

Dilute Oxygen Combustion (DOC) burners have been successfully installed and operated in the reheat furnace at Auburn Steel Co., Inc., Auburn, NY, under Phase 3 of the Dilute Oxygen Combustion project. Two new preheat zones were created employing a total of eight 6.5 MMBtu/hr capacity burners. The preheat zones provide a 30 percent increase in maximum furnace production rate, from 75 tph to 100 tph. The fuel rate is essentially unchanged, with the fuel savings expected from oxy-fuel combustion being offset by higher flue gas temperatures. When allowance is made for the high nitrogen level and high gas phase temperature in the furnace, measured NOx emissions are in line with laboratory data on DOC burners developed in Phase 1 of the project. Burner performance has been good, and there have been no operating or maintenance problems. The DOC system continues to be used as part of Auburn Steel's standard reheat furnace practice. High gas phase temperature is a result of the high firing density needed to achieve high production rates, and little opportunity exists for improvement in that area. However, fuel and NOx performance can be improved by further conversion on furnace zones to DOC burners, which will lower furnace nitrogen levels. Major obstacles are cost and concern about increased formation of oxide scale on the steel. Oxide scale formation may be enhanced by exposure of the steel to higher concentrations of oxidizing gas components (primarily products of combustion) in the higher temperature zones of the furnace. Phase 4 of the DOC project will examine the rate of oxide scale formation in these higher temperature zones and develop countermeasures that will allow DOC burners to be used successfully in these furnace zones.

Riley, Michael F.

2000-05-31

327

A comparative analysis of serial ordering in ring-tailed lemurs (Lemur catta).  

PubMed

Research over the last 25 years has demonstrated that animals are able to organize sequences in memory and retrieve ordered sequences without language. Qualitative differences have been found between the serial organization of behavior in pigeons and monkeys. Here the authors test serial ordering abilities in ring-tailed lemurs, a strepsirrhine primate whose ancestral lineage diverged from that of monkeys, apes, and humans approximately 63 million years ago. Lemurs' accuracy and response times were similar to monkeys, thus suggesting that they may share mechanisms for serial organization that dates to a common primate ancestor. PMID:18085919

Merritt, Dustin; Maclean, Evan L; Jaffe, Sarah; Brannon, Elizabeth M

2007-11-01

328

Development of gallium arsenide high-speed, low-power serial parallel interface modules: Executive summary  

NASA Technical Reports Server (NTRS)

Final report to NASA LeRC on the development of gallium arsenide (GaAS) high-speed, low power serial/parallel interface modules. The report discusses the development and test of a family of 16, 32 and 64 bit parallel to serial and serial to parallel integrated circuits using a self aligned gate MESFET technology developed at the Honeywell Sensors and Signal Processing Laboratory. Lab testing demonstrated 1.3 GHz clock rates at a power of 300 mW. This work was accomplished under contract number NAS3-24676.

1988-01-01

329

Room-temperature macromolecular serial crystallography using synchrotron radiation  

PubMed Central

A new approach for collecting data from many hundreds of thousands of microcrystals using X-ray pulses from a free-electron laser has recently been developed. Referred to as serial crystallography, diffraction patterns are recorded at a constant rate as a suspension of protein crystals flows across the path of an X-ray beam. Events that by chance contain single-crystal diffraction patterns are retained, then indexed and merged to form a three-dimensional set of reflection intensities for structure determination. This approach relies upon several innovations: an intense X-ray beam; a fast detector system; a means to rapidly flow a suspension of crystals across the X-ray beam; and the computational infrastructure to process the large volume of data. Originally conceived for radiation-damage-free measurements with ultrafast X-ray pulses, the same methods can be employed with synchrotron radiation. As in powder diffraction, the averaging of thousands of observations per Bragg peak may improve the ratio of signal to noise of low-dose exposures. Here, it is shown that this paradigm can be implemented for room-temperature data collection using synchrotron radiation and exposure times of less than 3?ms. Using lysozyme microcrystals as a model system, over 40?000 single-crystal diffraction patterns were obtained and merged to produce a structural model that could be refined to 2.1?Å resolution. The resulting electron density is in excellent agreement with that obtained using standard X-ray data collection techniques. With further improvements the method is well suited for even shorter exposures at future and upgraded synchrotron radiation facilities that may deliver beams with 1000 times higher brightness than they currently produce. PMID:25075341

Stellato, Francesco; Oberthür, Dominik; Liang, Mengning; Bean, Richard; Gati, Cornelius; Yefanov, Oleksandr; Barty, Anton; Burkhardt, Anja; Fischer, Pontus; Galli, Lorenzo; Kirian, Richard A.; Meyer, Jan; Panneerselvam, Saravanan; Yoon, Chun Hong; Chervinskii, Fedor; Speller, Emily; White, Thomas A.; Betzel, Christian; Meents, Alke; Chapman, Henry N.

2014-01-01

330

Flexible Serial Response Learning by Pigeons (Columba livia) and Humans (Homo sapiens)  

E-print Network

Flexible Serial Response Learning by Pigeons (Columba livia) and Humans (Homo sapiens) Walter T to each target was measured. Pigeons (Columba livia) and humans (Homo sapiens) both showed response time

Herbranson, Wally

331

Paths to destruction: the lives and crimes of two serial killers.  

PubMed

Although research into the phenomenon of serial murder has revealed that serial killers frequently do not fit the initially described paradigm in terms of their physical and psychological profiles, backgrounds, and motives to kill, the media continues to sensationalize the figures of such killers and the investigators who attempt to analyze them on the basis of aspects of their crimes. Although the so-called "typical" profile of the serial murderer has proven accurate in some instances, in many other cases the demographics and behaviors of these killers have deviated widely from the generalized assumptions. This report details two unusual cases in which five and eight murders were committed in upstate New York. The lives and crimes of these offenders illustrate the wide spectrum of variations in the backgrounds, demographics, motivations, and actions witnessed among serial murderers, and highlight the limitations and dangers of profiling based on generalities. PMID:17209938

Wolf, Barbara C; Lavezzi, Wendy A

2007-01-01

332

Analysis of serial CT scans to assess template and catheter movement in prostate HDR brachytherapy  

Microsoft Academic Search

PurposeAs prostate high-dose-rate (HDR) brachytherapy becomes more prevalent, varying amounts of catheter displacement have been noted. To investigate the constancy of catheter position and its impact on dose distribution, we analyzed serial dosimetric CT scans.

Eduard Mullokandov; Glen Gejerman

2004-01-01

333

A new modality for treating congenital melanocytic nevus: "cogwheel pattern" serial excision method.  

PubMed

Congenital melanocytic nevus consists of congregations of nevomelanocytes. It is found in approximately 1% of new born infants. Congenital melanocytic nevus needs to be excised before it transforms into a malignant lesion. Many strategies have been attempted for the removal and reconstruction of the nevus. Serial excision enables wound closure to be accomplished with a shorter scar than if the original lesion was elliptically excised in a single stage and reorientation of the scar closer to the relaxed skin lines. The routine utilization of an elliptical serial excision as a standard method of closure often leads to the formation of elongated scars and waste of skin. The "Cogwheel pattern" serial excision is a new technique for reducing the size of the nevus efficiently. Reducing the final scar length, distributing the tension over many directions, and having the chance of decrease in operation numbers are ultimately achieved with the use of the "Cogwheel pattern" serial excision. PMID:25075368

Kang, Hyun Gu; Park, Myong Chul; Park, Dong Ha

2014-07-01

334

77 FR 66920 - Registration of Claims to Copyright: Group Registration of Serial Issues Filed Electronically  

Federal Register 2010, 2011, 2012, 2013

...LIBRARY OF CONGRESS Copyright Office 37 CFR Part...Electronically AGENCY: Copyright Office, Library of Congress. ACTION: Interim regulations...subscription copies of the serial promptly to the Library of Congress as a condition of...

2012-11-08

335

The ultimate solution of the Serial Killer in Hans Kelsen's positivism  

E-print Network

positivism shortcuts when committing their crimes, leading to identification by lawpositivism talism ideal of justice. A concept of law whichlaw. (Kelsen, 1974: the ultimate solution of the Serial Killer in hans kelsen's positivism

Araújo, Antonio Fábio Medrado

2012-01-01

336

A CMOS Imager With a Programmable Bit-Serial Column-Parallel SIMD/MIMD Processor  

E-print Network

An imager with an integrated fully programmable bit-serial column-parallel processor is proposed to meet the demand for a compact and versatile system-on-imager chip for consumer applications. The on-imager processor is ...

Yamashita, Hirofumi

337

Save the last dance II: unwanted serial position effects in figure skating judgments.  

PubMed

Serial position effects may occur whenever options are judged in sequence, as is the case in figure skating competitions. International figure skating competitions consist of at least two rounds, with serial position being randomized in the first round. Figure skaters with better scores in the first round perform later in the second round. Despite the initial randomization of serial position, figure skaters who perform later in the first round receive better scores in first and in the second round. The findings presented here replicate those of Bruine de Bruin (2005) [Save the last dance for me: unwanted serial position effects in jury evaluations. Acta Psychologica, 118, 245-260], using a larger dataset, and addressing potential concerns about Bruine de Bruin's analyses. PMID:16542632

Bruine de Bruin, Wändi

2006-11-01

338

19 CFR 10.41b - Clearance of serially numbered substantial holders or outer containers.  

Code of Federal Regulations, 2013 CFR

...A REDUCED RATE, ETC. General Provisions International Traffic § 10.41b Clearance of serially numbered substantial holders...by the U.S. Department of Agriculture, Animal and Plant Health Inspection Service, attesting to the admissibility of...

2013-04-01

339

19 CFR 10.41b - Clearance of serially numbered substantial holders or outer containers.  

Code of Federal Regulations, 2012 CFR

...A REDUCED RATE, ETC. General Provisions International Traffic § 10.41b Clearance of serially numbered substantial holders...by the U.S. Department of Agriculture, Animal and Plant Health Inspection Service, attesting to the admissibility of...

2012-04-01

340

19 CFR 10.41b - Clearance of serially numbered substantial holders or outer containers.  

Code of Federal Regulations, 2011 CFR

...A REDUCED RATE, ETC. General Provisions International Traffic § 10.41b Clearance of serially numbered substantial holders...by the U.S. Department of Agriculture, Animal and Plant Health Inspection Service, attesting to the admissibility of...

2011-04-01

341

19 CFR 10.41b - Clearance of serially numbered substantial holders or outer containers.  

...A REDUCED RATE, ETC. General Provisions International Traffic § 10.41b Clearance of serially numbered substantial holders...by the U.S. Department of Agriculture, Animal and Plant Health Inspection Service, attesting to the admissibility of...

2014-04-01

342

Dilute Surfactant Methods for Carbonate Formations  

SciTech Connect

There are many fractured carbonate reservoirs in US (and the world) with light oil. Waterflooding is effective in fractured reservoirs, if the formation is water-wet. Many fractured carbonate reservoirs, however, are mixed-wet and recoveries with conventional methods are low (less than 10%). The process of using dilute anionic surfactants in alkaline solutions has been investigated in this work for oil recovery from fractured oil-wet carbonate reservoirs both experimentally and numerically. This process is a surfactant-aided gravity drainage where surfactant diffuses into the matrix, lowers IFT and contact angle, which decrease capillary pressure and increase oil relative permeability enabling gravity to drain the oil up. Anionic surfactants have been identified which at dilute concentration of 0.05 wt% and optimal salinity can lower the interfacial tension and change the wettability of the calcite surface to intermediate/water-wet condition as well or better than the cationic surfactant DTAB with a West Texas crude oil. The force of adhesion in AFM of oil-wet regions changes after anionic surfactant treatment to values similar to those of water-wet regions. The AFM topography images showed that the oil-wetting material was removed from the surface by the anionic surfactant treatment. Adsorption studies indicate that the extent of adsorption for anionic surfactants on calcite minerals decreases with increase in pH and with decrease in salinity. Surfactant adsorption can be minimized in the presence of Na{sub 2}CO{sub 3}. Laboratory-scale surfactant brine imbibition experiments give high oil recovery (20-42% OOIP in 50 days; up to 60% in 200 days) for initially oil-wet cores through wettability alteration and IFT reduction. Small (<10%) initial gas saturation does not affect significantly the rate of oil recovery in the imbibition process, but larger gas saturation decreases the oil recovery rate. As the core permeability decreases, the rate of oil recovery reduces, and this reduction can be scaled by the gravitational dimensionless time. Mechanistic simulation of core-scale surfactant brine imbibition matches the experimentally observed imbibition data. In-situ distributions observed through simulation indicate that surfactant diffusion (which depends on temperature and molecular weight) is the rate limiting step. Most of the oil is recovered through gravitational forces. Oil left behind at the end of this process is at its residual oil saturation. The capillary and Bond numbers are not large enough to affect the residual oil saturation. At the field-scale, 50% of the recoverable oil is produced in about 3 years if the fracture spacing is 1 m and 25% if 10 m, in the example simulated. Decreasing fracture spacing and height, increasing permeability, and increasing the extent of wettability alteration increase the rate of oil recovery from surfactant-aided gravity drainage. This dilute surfactant aided gravity-drainage process is relatively cheap. The chemical cost for a barrel of oil produced is expected to be less than $1.

Kishore K. Mohanty

2006-02-01

343

Origin of ferromagnetic response in diluted magnetic semiconductors and oxides  

Microsoft Academic Search

This paper reviews the present understanding of the origin of ferromagnetic response that has been detected in a number of diluted magnetic semiconductors (DMSs) and diluted magnetic oxides (DMOs) as well as in some nominally magnetically undoped materials. It is argued that these systems can be grouped into four classes. To the first belong composite materials in which precipitations of

Tomasz Dietl

2007-01-01

344

Dissociation, recombination and detachment in oxygen discharges diluted with argon  

Microsoft Academic Search

We use a global (volume averaged) model to study the presence of negative ions and metastable species in low pressure high density O2\\/Ar discharge. In particular the role of argon dilution in the dissociation of oxygen is investigated and the increase in the metastable O(^2D) density with argon dilution. Furthermore, the electronegativity of the discharge is explored as a function

Jon T. Gudmundsson; Eythor G. Thorsteinsson

2006-01-01

345

Dilution in Boolean perceptrons that learn from noisy examples  

NASA Astrophysics Data System (ADS)

We investigate the effect of dilution after learning on the generalization ability of single-layer Boolean perceptrons that learn from noisy examples. We present a thorough comparison between the relative performances of several well known learning rules. In particular, we show that the effect of dilution is always deleterious, and that the Bayes algorithm always gives the best generalization performance.

Barbato, D. M. L.; Fontanari, J. F.

1996-11-01

346

Understanding Mental Models of Dilution in Thai Students  

ERIC Educational Resources Information Center

The purpose of this study was to investigate Thai students' understanding of dilution and related concepts. The literature suggests that a complete understanding of chemistry concepts such as dilution entails understanding of and the ability to integrate mental models across three levels of representation: the macroscopic, sub-microscopic and…

Jansoon, Ninna; Coll, Richard K.; Somsook, Ekasith

2009-01-01

347

Chemical transformations of Populus trichocarpa during dilute acid pretreatment  

E-print Network

The structural complexity and unique chemical and physical properties of plant cell walls cause plant biomassChemical transformations of Populus trichocarpa during dilute acid pretreatment Shilin Cao and methoxyl group content and these changes were accompanied with an increase in condensed lignin. The dilute

California at Riverside, University of

348

21 CFR 172.710 - Adjuvants for pesticide use dilutions.  

... 2014-04-01 false Adjuvants for pesticide use dilutions...Additives § 172.710 Adjuvants for pesticide use dilutions...following surfactants and related adjuvants may be safely added to pesticide...emulsifier blends that are added to herbicides for application to corn...

2014-04-01

349

Random dilutions, generating functions, and the void probability distribution function  

Microsoft Academic Search

The generating function for counts in randomly placed cells is derived using the characteristic functional. The distribution of voids in a randomly diluted subset of a given point distribution is shown to contain information about all the other count probabilities. Thus random dilutions may be used to derive the entire distribution function from the void distribution. A generalization of the

Ravi K. Sheth

1996-01-01

350

Fluid acceleration in the bulk of turbulent dilute polymer solutions  

Microsoft Academic Search

We studied the effects of long-chain polymers on the small scales of turbulence by experimental measurements of Lagrangian accelerations in the bulk of turbulent flows of dilute polymer solutions. Lagrangian accelerations were measured by following tracer particles with a high-speed optical tracking system. We observed a significant decrease in the acceleration variance in dilute polymer solutions as compared with in

Alice M. Crawford; Nicolas Mordant; Haitao Xu; Eberhard Bodenschatz

2008-01-01

351

Selective Serial Multi-Antibody Biosensing with TOPAS Microstructured Polymer Optical Fibers  

PubMed Central

We have developed a fluorescence-based fiber-optical biosensor, which can selectively detect different antibodies in serial at preselected positions inside a single piece of fiber. The fiber is a microstructured polymer optical fiber fabricated from TOPAS cyclic olefin copolymer, which allows for UV activation of localized sensor layers inside the holes of the fiber. Serial fluorescence-based selective sensing of Cy3-labelled ?-streptavidin and Cy5-labelled ?-CRP antibodies is demonstrated. PMID:23529122

Emiliyanov, Grigoriy; H?iby, Poul E.; Pedersen, Lars H.; Bang, Ole

2013-01-01

352

Short-Term Memory for Serial Order: The Start-End Model  

Microsoft Academic Search

Three solutions to the problem of serial order can be identified: chaining, ordinal and positional theories. Error patterns in serial recall from short-term memory fail to support chaining theories, yet provide unequivocal evidence for positional theories. In a new model of short-term memory, the Start-End Model (SEM), the positions of items in a sequence are coded relative to the start

Richard N. A. Henson

1998-01-01

353

Mortgage Foreclosure and Health Disparities: Serial Displacement as Asset Extraction in African American Populations  

Microsoft Academic Search

In this paper we offer a conceptualization of mortgage foreclosure as serial displacement by highlighting the current crisis\\u000a in the context of historically repeated extraction of capital—economic, social, and human—from communities defined at different\\u000a scales: geographically, socially, and that of embodied individuals. We argue that serial displacement is the loss of capital,\\u000a physical resources, social integration and collective capacity, and

Susan Saegert; Desiree Fields; Kimberly Libman

354

Prognostic Relevance of Early Serial C-Reactive Protein Measurements After First Ischemic Stroke  

Microsoft Academic Search

Background and Purpose—Recent studies described an association between elevated levels of C-reactive protein (CRP) and outcome after ischemic stroke. We investigated the impact of early serial CRP measurements in hyperacute ischemic stroke on long-term outcome. Methods—One hundred twenty-seven consecutive patients without thrombolysis with a first ischemic stroke no more than 12 hours after symptom onset were examined. Serial CRP measurements

Kerstin Winbeck; Holger Poppert; Thorleif Etgen; Bastian Conrad; Dirk Sander

355

Serum-free Media for Culturing and Serial-Passaging of Adult Human Retinal Pigment Epithelium  

Microsoft Academic Search

The ability of a chemically-defined serum-free culture medium to support the attachment, growth and serial passaging of primary adult human retinal pigment epithelial (RPE) cells was studied. Primary cultures of adult human RPE were established in a chemically-defined serum-free culture medium on both bare or bovine corneal endothelial extracellular matrix-coated tissue-culture plastic. Confluent cells were serially passaged in chemically-defined serum-free

TONGALP H. TEZEL; LUCIAN V. DEL PRIORE

1998-01-01

356

Serial entrepreneurship: impact of human capital on time to re-entry  

Microsoft Academic Search

This study uses a longitudinal matched employer–employee database to examine how ex-entrepreneurs’ levels of general and specific\\u000a human capital influence their likelihood of re-entering entrepreneurship over time, in a different firm, thereby becoming\\u000a serial entrepreneurs. The results reveal a negative effect of general human capital on the hazard of becoming a serial entrepreneur;\\u000a the impact of entrepreneurial-specific human capital on

A. Miguel Amaral; Rui Baptista; Francisco Lima

2011-01-01

357

Serializing instructions in system-intensive workloads: Amdahl's Law strikes again  

Microsoft Academic Search

Serializing instructions (SIs), such as writes to control registers, have many complex dependencies, and are diffi- cult to execute out-of-order (OoO). To avoid unnecessary complexity, processors often serialize the pipeline to main- tain sequential semantics for these instructions. We observe frequent SIs across several system-intensive workloads and three ISAs, SPARC V9, X86-64, and Pow- erPC. As explained by Amdahl's Law,

Philip M. Wells; Gurindar S. Sohi

2008-01-01

358

Serial correlation and heterogeneous volatility in financial markets: beyond the LeBaron effect  

Microsoft Academic Search

We study the relation between serial correlation of financial returns and volatility at intraday level for the S&P500 stock index. At daily and weekly level, serial correlation and volatility are known to be negatively correlated (LeBaron effect). While confirming that the LeBaron effect holds also at intraday level, we go beyond it and, complementing the efficient market hyphotesis (for returns)

Simone Bianco; Fulvio Corsi; Roberto Reno

2008-01-01

359

Word length and age influences on forward and backward immediate serial recall  

Microsoft Academic Search

The present research is aimed at understanding the processes involved in short-term memory and how they interact with age.\\u000a Specifically, word length effects were examined under forward serial recall, backward serial recall, and item recognition\\u000a tasks, with performance being interpreted within an item-order theoretical framework. The interaction of age, word length,\\u000a and direction of recall was examined in two experiments,

Rosemary Baker; Gerald Tehan; Hannah Tehan

360

Seriality of phonological encoding in naming objects and reading their names.  

PubMed

There is a remarkable lack of research bringing together the literatures on oral reading and speaking. As concerns phonological encoding, both models of reading and speaking assume a process of segmental spellout for words, which is followed by serial prosodification in models of speaking (e.g., Levelt, Roelofs, & Meyer, 1999). Thus, a natural place to merge models of reading and speaking would be at the level of segmental spellout. This view predicts similar seriality effects in reading and object naming. Experiment 1 showed that the seriality of encoding inside a syllable revealed in previous studies of speaking is observed for both naming objects and reading their names. Experiment 2 showed that both object naming and reading exhibit the seriality of the encoding of successive syllables previously observed for speaking. Experiment 3 showed that the seriality is also observed when object naming and reading trials are mixed rather than tested separately, as in the first two experiments. These results suggest that a serial phonological encoding mechanism is shared between naming objects and reading their names. PMID:15190714

Roelofs, Ardi

2004-03-01

361

DILUTE SURFACTANT METHODS FOR CARBONATE FORMATIONS  

SciTech Connect

There are many carbonate reservoirs in US (and the world) with light oil and fracture pressure below its minimum miscibility pressure (or reservoir may be naturally fractured). Many carbonate reservoirs are naturally fractured. Waterflooding is effective in fractured reservoirs, if the formation is water-wet. Many fractured carbonate reservoirs, however, are mixed-wet and recoveries with conventional methods are low (less than 10%). Thermal and miscible tertiary recovery techniques are not effective in these reservoirs. Surfactant flooding (or huff-n-puff) is the only hope, yet it was developed for sandstone reservoirs in the past. The goal of this research is to evaluate dilute (hence relatively inexpensive) surfactant methods for carbonate formations and identify conditions under which they can be effective. Imbibition in an originally oil-wet 2D capillary is the fastest in the case of Alf-38 and slowest in the case of DTAB (among the surfactants studied). Force of adhesion studies and contact angle measurements show that greater wettability alteration is possible with these anionic surfactants than the cationic surfactant studied. The water imbibition rate does not increase monotonically with an increase in the surfactant concentration. A numerical model has been developed that fits the rate of imbibition. Plans for the next quarter include conducting simulation and imbibition studies.

Kishore K. Mohanty

2005-01-01

362

Dilute ferromagnetic semiconductors: Physics and spintronic structures  

NASA Astrophysics Data System (ADS)

This review compiles results of experimental and theoretical studies on thin films and quantum structures of semiconductors with randomly distributed Mn ions, which exhibit spintronic functionalities associated with collective ferromagnetic spin ordering. Properties of p-type Mn-containing III-V as well as II-VI, IV-VI, V2-VI3, I-II-V, and elemental group IV semiconductors are described, paying particular attention to the most thoroughly investigated system (Ga,Mn)As that supports the hole-mediated ferromagnetic order up to 190 K for the net concentration of Mn spins below 10%. Multilayer structures showing efficient spin injection and spin-related magnetotransport properties as well as enabling magnetization manipulation by strain, light, electric fields, and spin currents are presented together with their impact on metal spintronics. The challenging interplay between magnetic and electronic properties in topologically trivial and nontrivial systems is described, emphasizing the entangled roles of disorder and correlation at the carrier localization boundary. Finally, the case of dilute magnetic insulators is considered, such as (Ga,Mn)N, where low-temperature spin ordering is driven by short-ranged superexchange that is ferromagnetic for certain charge states of magnetic impurities.

Dietl, Tomasz; Ohno, Hideo

2014-01-01

363

DILUTE SURFACTANT METHODS FOR CARBONATE FORMATIONS  

SciTech Connect

There are many carbonate reservoirs in US (and the world) with light oil and fracture pressure below its minimum miscibility pressure (or reservoir may be naturally fractured). Many carbonate reservoirs are naturally fractured. Waterflooding is effective in fractured reservoirs, if the formation is water-wet. Many fractured carbonate reservoirs, however, are mixed-wet and recoveries with conventional methods are low (less than 10%). Thermal and miscible tertiary recovery techniques are not effective in these reservoirs. Surfactant flooding (or huff-n-puff) is the only hope, yet it was developed for sandstone reservoirs in the past. The goal of this research is to evaluate dilute (hence relatively inexpensive) surfactant methods for carbonate formations and identify conditions under which they can be effective. We have conducted adsorption, phase behavior and wettability studies. Addition of Na{sub 2}CO{sub 3} decreases IFT with a minimum at about 0.2 M. Addition of surfactant decreases IFT further. In the absence of surfactant the minerals are oil wet after aging with crude oil. Addition of surfactant solution decreases the contact angle to intermediate wettability. Addition of Na{sub 2}CO{sub 3} decreases anionic surfactant adsorption on calcite surface. Plans for the next quarter include conducting adsorption, phase behavior and wettability studies.

Kishore K. Mohanty

2003-07-01

364

DILUTE SURFACTANT METHODS FOR CARBONATE FORMATIONS  

SciTech Connect

There are many carbonate reservoirs in US (and the world) with light oil and fracture pressure below its minimum miscibility pressure (or reservoir may be naturally fractured). Many carbonate reservoirs are naturally fractured. Waterflooding is effective in fractured reservoirs, if the formation is water-wet. Many fractured carbonate reservoirs, however, are mixed-wet and recoveries with conventional methods are low (less than 10%). Thermal and miscible tertiary recovery techniques are not effective in these reservoirs. Surfactant flooding (or huff-n-puff) is the only hope, yet it was developed for sandstone reservoirs in the past. The goal of this research is to evaluate dilute (hence relatively inexpensive) surfactant methods for carbonate formations and identify conditions under which they can be effective. We have conducted adsorption, phase behavior, interfacial tension (IFT) and wettability studies. Addition of Na{sub 2}CO{sub 3} decreases IFT with a minimum at about 0.2 M. Addition of surfactant decreases IFT further. In the absence of surfactant the minerals are oil-wet after aging with crude oil. Addition of surfactant solution decreases the contact angle to intermediate-wet for many surfactants and water-wet for one surfactant. Addition of Na{sub 2}CO{sub 3} decreases anionic surfactant adsorption on calcite surface. Plans for the next quarter include conducting core adsorption, phase behavior, wettability and mobilization studies.

Kishore K. Mohanty

2003-07-01

365

DILUTE SURFACTANT METHODS FOR CARBONATE FORMATIONS  

SciTech Connect

There are many carbonate reservoirs in US (and the world) with light oil and fracture pressure below its minimum miscibility pressure (or reservoir may be naturally fractured). Many carbonate reservoirs are naturally fractured. Waterflooding is effective in fractured reservoirs, if the formation is water-wet. Many fractured carbonate reservoirs, however, are mixed-wet and recoveries with conventional methods are low (less than 10%). Thermal and miscible tertiary recovery techniques are not effective in these reservoirs. Surfactant flooding (or huff-n-puff) is the only hope, yet it was developed for sandstone reservoirs in the past. The goal of this research is to evaluate dilute (hence relatively inexpensive) surfactant methods for carbonate formations and identify conditions under which they can be effective. Laboratory imbibition tests show about 61% oil recovery in the case of Alf-38 and 37% in the case of DTAB. A numerical model has been developed that fits the rate of imbibition of the laboratory experiment. Field-scale fracture block simulation shows that as the fracture spacing increases, so does the time of recovery. Plans for the next quarter include simulation studies.

Kishore K. Mohanty

2005-04-01

366

Active accumulation of very diluted biomolecules by nano-dispensing for easy detection below the femtomolar range.  

PubMed

Highly sensitive detection of biomolecules is of paramount interest in many fields including biomedicine, safety and eco-pollution. Conventional analyses use well-established techniques with detection limits ~1?pM. Here we propose a pyro-concentrator able to accumulate biomolecules directly onto a conventional binding surface. The operation principle is relatively simple but very effective. Tiny droplets are drawn pyro-electro-dynamically and released onto a specific site, thus increasing the sensitivity. The reliability of the technique is demonstrated in case of labelled oligonucleotides diluted serially. The results show the possibility to detect very diluted oligonucleotides, down to a few hundreds of attomoles. Excellent results are shown also in case of a sample of clinical interest, the gliadin, where a 60-fold improved detection limit is reached, compared with standard ELISA. This method could open the way to a mass-based technology for sensing molecules at very low concentrations, in environmental as well as in diagnostics applications. PMID:25408128

Grilli, S; Miccio, L; Gennari, O; Coppola, S; Vespini, V; Battista, L; Orlando, P; Ferraro, P

2014-01-01

367

Managing Electronic Serials: Essays Based on the ALCTS Electronic Serials Institutes 1997-1999. ALCTS Papers on Library Technical Services & Collections, No. 9.  

ERIC Educational Resources Information Center

If managed well, electronic journals (e-journals) can be extremely efficient, saving money and space while improving access and speeding information delivery. With the help of the Internet, e-journals can also make library collections more accessible to both users and staff. Covering the process of managing electronic serials from licensing,…

Bluh, Pamela M., Ed.

368

Dilute Oxygen Combustion Phase 2 Final Report  

SciTech Connect

A novel burner, in which fuel (natural gas) and oxidant (oxygen or air) are separately injected into a furnace, shows promise for achieving very low nitrogen oxide(s) (NOx) emissions for commercial furnace applications. The dilute oxygen combustion (DOC) burner achieves very low NOx through in-furnace dilution of the oxidant stream prior to combustion, resulting in low flame temperatures, thus inhibiting thermal NOx production. The results of a fundamental and applied research effort on the development of the DOC burner are presented. In addition, the results of a market survey detailing the potential commercial impact of the DOC system are disclosed. The fundamental aspects of the burner development project involved examining the flame characteristics of a natural gas turbulent jet in a high-temperature (~1366 K) oxidant (7-27% O2 vol. wet). Specifically, the mass entrainment rate, the flame lift-off height, the velocity field and major species field of the jet were evaluated as a function of surrounding-gas temperature and composition. The measured entrainment rate of the fuel jet decreased with increasing oxygen content in the surrounding high-temperature oxidant, and was well represented by the d+ scaling correlation found in the literature. The measured flame lift-off height decreased with increasing oxygen content and increasing temperature of the surrounding gas. An increase in surrounding-gas oxygen content and/or temperature inhibited the velocity decay within the jet periphery as a function of axial distance as compared to isothermal turbulent jets. However, the velocity measurements were only broadly represented by the d+ scaling correlation. Several DOC burner configurations were tested in a laboratory-scale furnace at a nominal firing rate of 185 kW (~0.63 MMBtu/h). The flue gas composition was recorded as a function of furnace nitrogen content, furnace temperature, burner geometric arrangement, firing rate, and fuel injection velocity. NOx emissions increased with increasing furnace nitrogen content and furnace temperature, but remained relatively insensitive to variations in fuel injection velocity and firing rate. NOx emissions below 5-10-3 g/MJ (10 ppm-air equivalent at 3% O2 dry) were obtained for furnace temperatures below 1533 K (2300?F) and furnace nitrogen levels between 1 and 40%. CO emissions were typically low (<35 ppm). Detailed in-furnace species measurements revealed the importance of the interior furnace circulation patterns, as influenced by fuel and oxidant injection schemes, on pollutant emissions. The combustion stability traits of several DOC burner arrangements were ascertained through furnace pressure measurements, wit6h increased stability occurring as furnace temperature increased and as the separation distance between fuel and oxidant inputs decreased. Based on current market conditions, oxy-fuel conversion of batch steel reheat furnaces with a DOC burner is justified on the basis of lower utility costs alone. However, conversion of continuous steel reheat furnaces, which are responsible for most steel production, required additional economic incentives, such as further fuel savings, increased furnace productivity, or emission credits.

Ryan, H.M.; Riley, M.F.; Kobayashi, H.

2005-09-30

369

Dilute Oxygen Combustion Phase I Final Report  

SciTech Connect

A novel burner, in which fuel (natural gas) and oxidant (oxygen or air) are separately injected into a furnace, shows promise for achieving very low nitrogen oxide(s) (NOx) emissions for commercial furnace applications. The dilute oxygen combustion (DOC) burner achieves very low NOx through in-furnace dilution of the oxidant stream prior to combustion, resulting in low flame temperatures, thus inhibiting thermal NOx production. The results of a fundamental and applied research effort on the development of the DOC burner are presented. In addition, the results of a market survey detailing the potential commercial impact of the DOC system are disclosed. The fundamental aspects of the burner development project involved examining the flame characteristics of a natural gas turbulent jet in a high-temperature (~1366 K) oxidant (7-27% O2 vol. wet). Specifically, the mass entrainment rate, the flame lift-off height, the velocity field and major species field of the jet were evaluated as a function of surrounding-gas temperature and composition. The measured entrainment rate of the fuel jet decreased with increasing oxygen content in the surrounding high-temperature oxidant, and was well represented by the d+ scaling correlation found in the literature. The measured flame lift-off height decreased with increasing oxygen content and increasing temperature of the surrounding gas. An increase in surrounding-gas oxygen content and/or temperature inhibited the velocity decay within the jet periphery as a function of axial distance as compared to isothermal turbulent jets. However, the velocity measurements were only broadly represented by the d+ scaling correlation. Several DOC burner configurations were tested in a laboratory-scale furnace at a nominal firing rate of 185 kW (~0.63 MMBtu/h). The flue gas composition was recorded as a function of furnace nitrogen content, furnace temperature, burner geometric arrangement, firing rate, and fuel injection velocity. NOx emissions increased with increasing furnace nitrogen content and furnace temperature, but remained relatively insensitive to variations in fuel injection velocity and firing rate. NOx emissions below 5-10-3 g/MJ (10 ppm-air equivalent at 3% O2 dry) were obtained for furnace temperatures below 1533 K (2300°F) and furnace nitrogen levels between 1 and 40%. CO emissions were typically low (<35 ppm). Detailed in-furnace species measurements revealed the importance of the interior furnace circulation patterns, as influenced by fuel and oxidant injection schemes, on pollutant emissions. The combustion stability traits of several DOC burner arrangements were ascertained through furnace pressure measurements, wit6h increased stability occurring as furnace temperature increased and as the separation distance between fuel and oxidant inputs decreased. Based on current market conditions, oxy-fuel conversion of batch steel reheat furnaces with a DOC burner is justified on the basis of lower utility costs alone. However, conversion of continuous steel reheat furnaces, which are responsible for most steel production, required additional economic incentives, such as further fuel savings, increased furnace productivity, or emission credits.

Ryan, H.M.; Riley, M.F.; Kobayashi, H.

1997-10-31

370

Dilute oxygen combustion. Phase I report  

SciTech Connect

A novel burner, in which fuel (natural gas) and oxidant (oxygen or air) are separately injected into a furnace, shows promise for achieving very low nitrogen oxide(s) (NO{sub x}) emissions for commercial furnace applications. The dilute oxygen combustion (DOC) burner achieves very low NO{sub x} through in-furnace dilution of the oxidant stream prior to combustion, resulting in low flame temperatures, thus inhibiting thermal NO{sub x} production. The results of a fundamental and applied research effort on the development of the DOC burner are presented. In addition, the results of a market survey detailing the potential commercial impact of the DOC system are disclosed. The fundamental aspects of the burner development project involved examining the flame characteristics of a natural gas turbulent jet in a high-temperature ({approximately}1366 K) oxidant (7-27% O{sub 2} vol. wet). Specifically, the mass entrainment rate, the flame lift-off height, the velocity field and major species field of the jet were evaluated as a function of surrounding-gas temperature and composition. The measured entrainment rate of the fuel jet decreased with increasing oxygen content in the surrounding high-temperature oxidant, and was well represented by the d{sup +} scaling correlation found in the literature. The measured flame lift-off height decreased with increasing oxygen content and increasing temperature of the surrounding gas. An increase in surrounding-gas oxygen content and/or temperature inhibited the velocity decay within the jet periphery as a function of axial distance as compared to isothermal turbulent jets. However, the velocity measurements were only broadly represented by the d{sup +} scaling correlation. Several DOC burner configurations were tested in a laboratory-scale furnace at a nominal firing rate of 185 kW ({approximately}0.63 MMBtu/h). The flue gas composition was recorded as a function of furnace nitrogen content, furnace temperature, burner geometric arrangement, firing rate, and fuel injection velocity. NO{sub x} emissions increased with increasing furnace nitrogen content and furnace temperature, but remained relatively insensitive to variations in fuel injection velocity and firing rate. NO{sub x} emissions below 5{times}10{sup -3} g/MJ (10 ppm-air equivalent at 3% O{sub 2} dry) were obtained for furnace temperatures below 1533 K (2300{degree}F) and furnace nitrogen levels between 1 and 40%. CO emissions were typically low (<35 ppm). Detailed in- furnace species measurements revealed the importance of the interior furnace circulation patterns, as influenced by fuel and oxidant injection schemes, on pollutant emissions. The combustion stability traits of several DOC burner arrangements were ascertained through furnace pressure measurements, with increased stability occurring as furnace temperature increased and as the separation distance between fuel and oxidant inputs decreased. Based on current market conditions, oxy-fuel conversion of batch steel reheat furnaces with a DOC burner is justified on the basis of utility costs alone. However, conversion of continuous steel reheat furnaces, which are responsible for most steel production, requires additional economic incentives, such as further fuel savings, increased furnace productivity, or emission credits.

NONE

1997-10-01

371

Effect of Different Attentional Instructions on the Acquisition of a Serial Movement Task  

PubMed Central

Recent research in attentional focus of instruction has predominantly over-emphasized the investigation of discrete and continuous skills rather than serial skills. The purpose of this study was therefore to examine the effect of different attentional focus instructions on learning a serial skill task (i.e., taekwondo routine) in novice learners. It was predicted that the use of movement outcome instructions could enhance the learning of a serial skill as previously supported in studies examining the acquisition of discrete and continuous skills. Thirteen female participants were recruited for this study and were assigned to either movement form condition - control group (n = 7) or movement outcome condition – treatment group (n = 6). All participants underwent 12 practice sessions over an 8-week period with their respective instructional conditions with each session lasting 30 minutes. Video recording of the serial skill tasks (hand techniques, kicking techniques and 10-step routine) were captured at “the-twelfth-training session”, “after 1-week”, and “after 1-month”. It was found that more participants in the treatment group obtained a higher score in all three serial skill tasks, especially in Mastery component of ‘Kicking’ techniques at ‘after 1-week’ (p < 0.05, r = 0.57). This study suggested that movement outcome instructions have positive medium effect on balance control for serial skill task, especially in kicking actions. Key Points Movement outcome (MO) instructions have a positive impact on learning a serial task, especially in kicking actions. More functional coordination during movement executions for MO participants. Benefits for MO instructions may be individual specific.

Woo, Mei Teng; Chow, Jia Yi; Koh, Michael

2014-01-01

372

Effect of dilution on carboxymethylcellulase and xylanase assays  

SciTech Connect

It has been demonstrated that the dilution of samples prior to the carboxymethylcellulase and xylanase assays causes serious discrepancies in the numerical values obtained for the enzyme activities. Even when the sample is assayed with the identical procedure, one could obtain different numerical values of the enzyme activity U depending on how much this sample has been diluted before the enzyme assay. Two crude commercial cellulase samples of Aspergillus niger and Trichoderma viride as well as the culture filtrate of our newly isolated acidophilic fungus have been used for the demonstration. An empirical method for reporting the cellulolytic activity by taking into account this dilution effect is proposed.

Cauchon, N.; LeDuy, A.

1984-08-01

373

Stability of the replica symmetric solution in diluted perceptron learning  

NASA Astrophysics Data System (ADS)

We study the role played by dilution in the average behavior of a perceptron model with continuous coupling with the replica method. We analyze the stability of the replica symmetric solution as a function of the dilution field for the generalization and memorization problems. Thanks to a Gardner-like stability analysis we show that at any fixed ratio ? between the number of patterns M and the dimension N of the perceptron (? = M/N), there exists a critical dilution field hc above which the replica symmetric ansatz becomes unstable.

Lage-Castellanos, Alejandro; Pagnani, Andrea; Quintero Angulo, Gretel

2013-02-01

374

Two-stage dilute acid prehydrolysis of biomass  

DOEpatents

A two-stage dilute acid prehydrolysis process on xylan containing hemicellulose in biomass is effected by: treating feedstock of hemicellulosic material comprising xylan that is slow hydrolyzable and xylan that is fast hydrolyzable under predetermined low temperature conditions with a dilute acid for a residence time sufficient to hydrolyze the fast hydrolyzable xylan to xylose; removing said xylose from said fast hydrolyzable xylan and leaving a residue; and treating said residue having a slow hydrolyzable xylan with a dilute acid under predetermined high temperature conditions for a residence time required to hydrolyze said slow hydrolyzable xylan to xylose.

Grohmann, Karel (Winter Haven, FL); Torget, Robert W. (Littleton, CO)

1992-01-01

375

21 CFR 862.2750 - Pipetting and diluting system for clinical use.  

Code of Federal Regulations, 2012 CFR

... Pipetting and diluting system for clinical use. 862...TOXICOLOGY DEVICES Clinical Laboratory Instruments § 862.2750 Pipetting and diluting system for clinical use. ...pipetting and diluting system for clinical use...

2012-04-01

376

21 CFR 862.2750 - Pipetting and diluting system for clinical use.  

Code of Federal Regulations, 2013 CFR

... Pipetting and diluting system for clinical use. 862...TOXICOLOGY DEVICES Clinical Laboratory Instruments § 862.2750 Pipetting and diluting system for clinical use. ...pipetting and diluting system for clinical use...

2013-04-01

377

21 CFR 862.2750 - Pipetting and diluting system for clinical use.  

Code of Federal Regulations, 2011 CFR

... Pipetting and diluting system for clinical use. 862...TOXICOLOGY DEVICES Clinical Laboratory Instruments § 862.2750 Pipetting and diluting system for clinical use. ...pipetting and diluting system for clinical use...

2011-04-01

378

40 CFR 1065.546 - Validation of minimum dilution ratio for PM batch sampling.  

Code of Federal Regulations, 2010 CFR

...dilution ratio for PM batch sampling. 1065.546 Section...dilution ratio for PM batch sampling. Use continuous flows and/or tracer gas concentrations for transient...dilution ratios for PM batch sampling as specified in §...

2010-07-01

379

Enthalpies of dilution of mono-, di- and poly-alcohols in dilute aqueous solutions at 298.15 K  

Microsoft Academic Search

The enthalpies of dilution of aqueous solutions of methanol, ethanol, l-propanol, 2-propanol, 1-butanol, l-pentanol, 1-hexanol,\\u000a cyclohexanol, 1,3-butanediol, 1,4-butanediol, 2,3-butanediol and poly-alcohol(cyclohexaamylose) have been determined at high\\u000a dilution as a function of the mole fraction of alcohol at 298.15 K, by a rocking twin-microcalorimeter of the heat-conduction\\u000a type.\\u000a \\u000a A smoothing equation of the enthalpies of dilution against the mole fractions of

M. Fujisawa; M. Maeda; S. Takagi; T. Kimura

2002-01-01

380

Dilute Oxygen Combustion Phase IV Final Report  

SciTech Connect

Novel furnace designs based on Dilute Oxygen Combustion (DOC) technology were developed under subcontract by Techint Technologies, Coraopolis, PA, to fully exploit the energy and environmental capabilities of DOC technology and to provide a competitive offering for new furnace construction opportunities. Capital cost, fuel, oxygen and utility costs, NOx emissions, oxide scaling performance, and maintenance requirements were compared for five DOC-based designs and three conventional air5-fired designs using a 10-year net present value calculation. A furnace direct completely with DOC burners offers low capital cost, low fuel rate, and minimal NOx emissions. However, these benefits do not offset the cost of oxygen and a full DOC-fired furnace is projected to cost $1.30 per ton more to operate than a conventional air-fired furnace. The incremental cost of the improved NOx performance is roughly $6/lb NOx, compared with an estimated $3/lb. NOx for equ8pping a conventional furnace with selective catalytic reduction (SCCR) technology. A furnace fired with DOC burners in the heating zone and ambient temperature (cold) air-fired burners in the soak zone offers low capital cost with less oxygen consumption. However, the improvement in fuel rate is not as great as the full DOC-fired design, and the DOC-cold soak design is also projected to cost $1.30 per ton more to operate than a conventional air-fired furnace. The NOx improvement with the DOC-cold soak design is also not as great as the full DOC fired design, and the incremental cost of the improved NOx performance is nearly $9/lb NOx. These results indicate that a DOC-based furnace design will not be generally competitive with conventional technology for new furnace construction under current market conditions. Fuel prices of $7/MMBtu or oxygen prices of $23/ton are needed to make the DOC furnace economics favorable. Niche applications may exist, particularly where access to capital is limited or floor space limitations are critical. DOC technology will continue to have a highly competitive role in retrofit applications requiring increases in furnace productivity.

Riley, M.F.

2003-04-30

381

The motivation behind serial sexual homicide: is it sex, power, and control, or anger?  

PubMed

Controversy exists in the literature and society regarding what motivates serial sexual killers to commit their crimes. Hypotheses range from the seeking of sexual gratification to the achievement of power and control to the expression of anger. The authors provide theoretical, empirical, evolutionary, and physiological support for the argument that serial sexual murderers above all commit their crimes in pursuit of sadistic pleasure. The seeking of power and control over victims is believed to serve the two secondary purposes of heightening sexual arousal and ensuring victim presence for the crime. Anger is not considered a key component of these offenders' motivation due to its inhibitory physiological effect on sexual functioning. On the contrary, criminal investigations into serial sexual killings consistently reveal erotically charged crimes, with sexual motivation expressed either overtly or symbolically. Although anger may be correlated with serial sexual homicide offenders, as it is with criminal offenders in general, it is not causative. The authors further believe serial sexual murderers should be considered sex offenders. A significant proportion of them appear to have paraphilic disorders within the spectrum of sexual sadism. "sexual sadism, homicidal type" is proposed as a diagnostic subtype of sexual sadism applicable to many of these offenders, and a suggested modification of DSM criteria is presented. PMID:16882237

Myers, Wade C; Husted, David S; Safarik, Mark E; O'Toole, Mary Ellen

2006-07-01

382

Spatial patterns of serial murder: an analysis of disposal site location choice.  

PubMed

Although the murders committed by serial killers may not be considered rational, there is growing evidence that the locations in which they commit their crimes may be guided by an implicit, if limited rationality. The hypothesized logic of disposal site choice of serial killers led to predictions that (a) their criminal domains would be around their home base and relate to familiar travel distances, (b) they would have a size that was characteristic of each offender, (c) the distribution would be biased towards other non-criminal activities, and (d) the size of the domains would increase over time. Examination of the geographical distribution of the sites at which 126 US and 29 UK serial killers disposed of their victims' bodies supported all four hypotheses. It was found that rational choice and routine activity models of criminal behavior could explain the spatial choices of serial murderers. It was concluded that the locations at which serial killers dispose of their victims' bodies reflect the inherent logic of the choices that underlie their predatory activities. PMID:11568963

Lundrigan, S; Canter, D

2001-01-01

383

The SPi chip as an integrated power management device for serial powering of future HEP experiments  

SciTech Connect

Serial powering is one viable and very efficient way to distribute power to future high energy physics (HEP) experiments. One promising way to realize serial powering is to have a power management device on the module level that provides the necessary voltage levels and features monitoring functionality. The SPi (Serial Powering Interface) chip is such a power manager and is designed to meet the requirements imposed by current SLHC upgrade plans. It incorporates a programmable shunt regulator, two linear regulators, current mode ADCs to monitor the current distribution on the module, over-current detection, and also provides module power-down capabilities. Compared to serially powered setups that use discrete components, the SPi offers a higher level of functionality in much less real estate and is designed to be radiation tolerant. Bump bonding techniques are used for chip on board assembly providing the most reliable connection at lowest impedance. This paper gives an overview of the SPi and outlines the main building blocks of the chip. First stand alone tests are presented showing that the chip is ready for operation in serially powered setups.

Trimpl, M.; Deptuch, G.; Gingu, C.; Yarema, R.; /Fermilab; Holt, R.; Weber, M.; /Rutherford; Kierstead, J.; Lynn, D.; /Brookhaven

2009-01-01

384

The utilization of forensic science and criminal profiling for capturing serial killers.  

PubMed

Movies and nightly television shows appear to emphasize highly efficient regimens in forensic science and criminal investigative analysis (profiling) that result in capturing serial killers and other perpetrators of homicide. Although some of the shows are apocryphal and unrealistic, they reflect major advancements that have been made in the fields of forensic science and criminal psychology during the past two decades that have helped police capture serial killers. Some of the advancements are outlined in this paper. In a study of 200 serial killers, we examined the variables that led to police focusing their attention on specific suspects. We developed 12 categories that describe how serial killers come to the attention of the police. The results of the present study indicate that most serial killers are captured as a result of citizens and surviving victims contributing information that resulted in police investigations that led to an arrest. The role of forensic science appears to be important in convicting the perpetrator, but not necessarily in identifying the perpetrator. PMID:21333473

White, John H; Lester, David; Gentile, Matthew; Rosenbleeth, Juliana

2011-06-15

385

From parallel to serial processing: a computational study of visual search.  

PubMed

A novel computational model of a preattentive system performing visual search is presented. The model processes displays of lines, reproduced from Wolfe, Friedman-Hill, Stewart, and O'Connell's (1992) and Treisman and Sato's (1990) visual-search experiments. The response times measured in these experiments suggest that some of the displays are searched serially, whereas others are scanned in parallel. Our neural network model operates in two phases. First, the visual displays are compressed via standard methods (principal component analysis), to overcome assumed biological capacity limitations. Second, the compressed representations are further processed to identify a target in the display. The model succeeds in fast detection of targets in experimentally labeled parallel displays, but fails with serial ones. Analysis of the compressed internal representations reveals that compressed parallel displays contain global information that enables instantaneous target detection. However, in representations of serial displays, this global information is obscure, and hence, a target detection system should resort to a serial, attentional scan of local features across the display. Our analysis provides a numerical criterion that is strongly correlated with the experimental response time slopes and enables us to reformulate Duncan and Humphreys's (1989) search surface, using precise quantitative measures. Our findings provide further insight into the important debate concerning the dichotomous versus continuous views of parallel/serial visual search. PMID:10572471

Cohen, E; Ruppin, E

1999-10-01

386

System and method for simultaneously collecting serial number information from numerous identity tags  

DOEpatents

A system and method for simultaneously collecting serial number information reports from numerous colliding coded-radio-frequency identity tags. Each tag has a unique multi-digit serial number that is stored in non-volatile RAM. A reader transmits an ASCII coded "D" character on a carrier of about 900 MHz and a power illumination field having a frequency of about 1.6 Ghz. A one MHz tone is modulated on the 1.6 Ghz carrier as a timing clock for a microprocessor in each of the identity tags. Over a thousand such tags may be in the vicinity and each is powered-up and clocked by the 1.6 Ghz power illumination field. Each identity tag looks for the "D" interrogator modulated on the 900 MHz carrier, and each uses a digit of its serial number to time a response. Clear responses received by the reader are repeated for verification. If no verification or a wrong number is received by any identity tag, it uses a second digital together with the first to time out a more extended period for response. Ultimately, the entire serial number will be used in the worst case collision environments; and since the serial numbers are defined as being unique, the final possibility will be successful because a clear time-slot channel will be available.

Doty, Michael A. (Manteca, CA)

1997-01-01

387

Translation of dilution tolerance for gasoline SI engine  

E-print Network

There are a variety of fuel improvement strategies being developed for spark ignition engines which use dilution. Many of these technologies use a combination of different diluents. It is impractical in optimizing these ...

Niekamp, Troy S. (Troy Steven)

2013-01-01

388

Fully portable, highly flexible dilution refrigerator systems for neutron scattering  

E-print Network

775 Fully portable, highly flexible dilution refrigerator systems for neutron scattering P. A systems developed specifically for neutron scattering environ- ments. The refrigerators are completely relatively recently however, the lowest temperatures available in almost all neutron scattering laboratories

Boyer, Edmond

389

Charge and magnetization inhomogeneities in diluted magnetic semiconductors  

E-print Network

It is predicted that III-V diluted magnetic semiconductors can exhibit stripelike modulations of magnetization and carrier concentration. This inhomogeneity results from the strong dependence of the magnetization on the carrier concentration. Within...

Timm, Carsten

2006-03-01

390

40 CFR 1065.340 - Diluted exhaust flow (CVS) calibration.  

Code of Federal Regulations, 2011 CFR

... Diluted exhaust flow (CVS) calibration...AGENCY (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING...and Verifications Flow-Related Measurements...rate of the reference flow meter, n ref ...of the calibration air, T dew ....

2011-07-01

391

40 CFR 1065.340 - Diluted exhaust flow (CVS) calibration.  

Code of Federal Regulations, 2010 CFR

... Diluted exhaust flow (CVS) calibration...AGENCY (CONTINUED) AIR POLLUTION CONTROLS ENGINE-TESTING...and Verifications Flow-Related Measurements...rate of the reference flow meter, n ref ...of the calibration air, T dew ....

2010-07-01

392

Contraction/expansion flow of dilute elastic solutions in microchannels  

E-print Network

An experimental study is conducted on the nature of extensional flows of mobile dilute polymer solutions in microchannel. By observing such fluids on the microscale it is possible to generate large strain rates ([approximately] ...

Scott, Timothy Peter, 1980-

2004-01-01

393

The Carlina-type diluted telescope: Stellar fringes on Deneb  

E-print Network

Context. The performance of interferometers has largely been increased over the last ten years. But the number of observable objects is still limited due to the low sensitivity and imaging capability of the current facilities. Studies have been done to propose a new generation of interferometers. Aims. The Carlina concept studied at the Haute-Provence Observatory consists in an optical interferometer configured as a diluted version of the Arecibo radio telescope: above the diluted primary mirror made of fixed co-spherical segments, a helium balloon or cables suspended between two mountains and/or pylons, carries a gondola containing the focal optics. This concept does not require delay lines. Methods. Since 2003, we have been building a technical demonstrator of this diluted telescope. The main goals of this project were to find the opto-mechanical solutions to stabilize the optics attached under cables at several tens of meters above the ground, and to characterize this diluted telescope under real condition...

Coroller, H Le; Hespeels, F; Arnold, L; Andersen, T; Deram, P; Ricci, D; Berio, P; Blazit, A; Clausse, J-M; Guillaume, C; Meunier, J-P; Regal, X; Sottile, R

2014-01-01

394

21 CFR 864.5240 - Automated blood cell diluting apparatus.  

Code of Federal Regulations, 2012 CFR

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES HEMATOLOGY AND PATHOLOGY DEVICES Automated and Semi-Automated Hematology Devices § 864.5240 Automated blood cell diluting apparatus....

2012-04-01

395

21 CFR 864.5240 - Automated blood cell diluting apparatus.  

... FOOD AND DRUG ADMINISTRATION, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICAL DEVICES HEMATOLOGY AND PATHOLOGY DEVICES Automated and Semi-Automated Hematology Devices § 864.5240 Automated blood cell diluting apparatus....

2014-04-01

396

Use of membranes for energy efficient concentration of dilute streams  

Microsoft Academic Search

In the chemical-process industries, dilute streams containing valuable ingredients are generated in several unit operations. Mechanical vapor-recompression is the best available technology for vaporization that may be used for concentrating such dilute solutions. Energy consumption for vaporization by compression and membrane technology is 350 and 90 kJ\\/kg, respectively. In order to save additional energy by recycling water, this study explored

Ashwani Kumar; Serge Croteau; Oleh Kutowy

1999-01-01

397

Anatomy of symmetry energy of dilute nuclear matter  

E-print Network

The symmetry energy coefficients of dilute clusterized nuclear matter are evaluated in the $S$-matrix framework. Employing a few different definitions commonly used in the literature for uniform nuclear matter, it is seen that the different definitions lead to perceptibly different results for the symmetry coefficients for dilute nuclear matter. They are found to be higher compared to those obtained for uniform matter in the low density domain. The calculated results are in reasonable consonance with those extracted recently from experimental data.

De, J N; Agrawal, B K

2010-01-01

398

Anatomy of the symmetry energy of dilute nuclear matter  

SciTech Connect

The symmetry energy coefficients of dilute clusters nuclear matter are evaluated in the S-matrix framework. Employing a few different definitions commonly used in the literature for uniform nuclear matter, it is seen that the different definitions lead to perceptibly different results for the symmetry coefficients for dilute nuclear matter. They are found to be higher compared to those obtained for uniform matter in the low density domain. The calculated results are in reasonable consonance with those extracted recently from experimental data.

De, J. N.; Samaddar, S. K.; Agrawal, B. K. [Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064 (India)

2010-10-15

399

Anatomy of symmetry energy of dilute nuclear matter  

E-print Network

The symmetry energy coefficients of dilute clusterized nuclear matter are evaluated in the $S$-matrix framework. Employing a few different definitions commonly used in the literature for uniform nuclear matter, it is seen that the different definitions lead to perceptibly different results for the symmetry coefficients for dilute nuclear matter. They are found to be higher compared to those obtained for uniform matter in the low density domain. The calculated results are in reasonable consonance with those extracted recently from experimental data.

J. N. De; S. K. Samaddar; B. K. Agrawal

2010-09-23

400

Electrical resistivity imaging of conductive plume dilution in fractured rock  

Microsoft Academic Search

Electrical resistance tomography (ERT) was used to monitor a conductive plume dilution experiment that was conducted in fractured\\u000a basalt in order to assess its applications in this type of fractured-rock environment. Tap water was injected into an injection\\u000a well for 34 days to dilute a pre-existing potassium chloride (KCl) plume at a site in Idaho, USA. No further fluids were introduced

Robin E. Nimmer; James L. Osiensky; Andrew M. Binley; Kenneth F. Sprenke; Barbara C. Williams

2007-01-01

401

Isotopic dilution and solvent effect studies using raman difference spectroscopy  

E-print Network

ISOTOPIC DILUTION AND SOLVENT EFFECT STUDIES USING RAMAN DIFFERENCE SPECTROSCOPY A Thesis by ANDREW NORMAN JOHNSON Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 1984 Major Subject: Chemistry ISOTOPIC DILUTION AND SOLVENT EFFECT STUDIES USING RAMAN DIFFERENCE SPECTROSCOPY A Thesis by ANDREW NORMAN JOHNSON Approved as to style and content by: Jaan Laane (Chairman of Committee) J. . Bevan...

Johnson, Andrew Norman

2012-06-07

402

Dilution effects on orbital order in strongly correlated electron systems  

Microsoft Academic Search

Dilution effects in orbital ordered systems with strong electron correlation are studied theoretically. Vacancy-concentration x dependence of the orbital-ordering temperature TOO calculated in the two-representative orbital models, i.e. the eg-orbital model in a three dimensional square lattice and the two-dimensional orbital compass model. Reduction of TOO as a function of x is stronger than that in dilute magnets and is

S. Ishihara; T. Tanaka; M. Matsumoto

2007-01-01

403

Determination of dilution factors in a nuclear facility  

E-print Network

of dilution factors within facilities the research reported here was undertaken to develop a simple method for determination of dilution factors, The use of '''I tagged iodine compounds for testing of filter media has been extensively reported... in the literature ' . Activated charcoal filters are exten- (8, 9) sively used for the sampling of iodine in all forms Results reported in the literature for effi- (10, 11) ciency of activated charcoal filters are in the 99-99. 99$ range . Effects of temperature...

Sandel, Philip Sidney

2012-06-07

404

Stabilization of Diluted Aqueous Solutions of Horseradish Peroxidase  

Microsoft Academic Search

Effects of pH, enzyme concentration, and various supplements on the catalytic activity, temperature stability, and secondary structure of horseradish peroxidase (HRP) were studied in diluted aqueous solutions. In 5.0 mM citrate-phosphate buffer (pH 4.2) at 55°C and infinite dilution, HRP was inactivated with a rate constant of 2.86 × 10–3 s–1. CaCl2, BSA, and glycerol caused protective effects, whereas KCl,

A. N. Eremin; L. P. Budnikova; O. V. Sviridov; D. I. Metelitsa

2002-01-01

405

The Interaction, Roles, and Responsibilities of the FBI Profiler and the Forensic Pathologist in the Investigation of Serial Murder  

Microsoft Academic Search

\\u000a Of the many challenges facing the law enforcement community, one of the most difficult is the investigation of serial murder\\u000a cases since these are high-profile, resource intensive investigations that provide unique challenges to the investigators.\\u000a In addition, it is not uncommon for serial murder cases to extend across multiple jurisdictions, creating communication, investigation,\\u000a and prosecution problems. The motivations of serial

Tracey S. Corey; David T. Resch; Mark A. Hilts

406

Fate of phosphorus in diluted urine with tap water.  

PubMed

P loss during the fresh urine storage process is inevitable because of the presence of Ca and Mg. Dilution is one of the most important parameters influencing urine composition and subsequent P recovery. This study aimed to investigate the fate of P in urine with different dilution ratios (Vwater/Vurine, i.e., 0/100, 25/75, 50/50 and 75/25). The results indicate that the percentage of P loss increased from 43% to 76% as the dilution ratio increased from 0/100 to 75/25 because of more Ca and Mg obtained from tap water. Meanwhile, P removal efficiency through struvite precipitation decreased from 51% to 8% because of lower supersaturation ratio as a result of dilution. Struvite crystals with high purity were still obtained even under a dilution ratio of 50/50 urine solution. Batch experiments were also performed to study the influence of temperature (15-35°C) on P recovery and crystal size. For different dilution ratios of urine solutions, no significant discrepancy for the P removal efficiencies were observed at 15 and 35°C, whereas the P removal efficiencies at 25°C showed an increasing gap with those at 15 and 35°C. The largest average crystal sizes were found at 25°C, which was opposite to the trend of P removal efficiency. PMID:25065802

Liu, Xiaoning; Wen, Guoqi; Wang, Huihui; Zhu, Xiaoqi; Hu, Zhengyi

2014-10-01

407

A high speed serializer ASIC for ATLAS Liquid Argon calorimeter upgrade  

E-print Network

We have been developing a serializer application-specific integrated circuit (ASIC) based on a commercial 0.25-?m silicon-on-sapphire (SOS) CMOS technology for the ATLAS liquid argon calorimeter front-end electronics upgrade. The first prototype, a 5 Gbps 16:1 serializer has been designed, fabricated, and tested in lab environment and in 200 MeV proton beam. The test results indicate that the first prototype meets the design goals. The second prototype, a double-lane, 8 Gbps per lane serializer is under development. The post layout simulation indicates that 8 Gbps is achievable. In this paper we present the design and the test results of the first prototype and the design and status of the second prototype.

Liu, T; The ATLAS collaboration

2014-01-01

408

The resurrection of Tweedledum and Tweedledee: bimodality cannot distinguish serial and parallel processes.  

PubMed

Simultaneously presented signals may be processed in serial or in parallel. One potentially valuable indicator of a system's characteristics may be the appearance of multimodality in the response time (RT) distributions. It is known that standard serial models can predict multimodal RT distributions, but it is unknown whether multimodality is diagnostic of serial systems, or whether alternative architectures, such as parallel ones, can also make such predictions. We demonstrate via simulations that a multimodal RT distribution is not sufficient by itself to rule out parallel self-terminating processing, even with limited trial numbers. These predictions are discussed within the context of recent data indicating the existence of multimodal distributions in visual search. PMID:24614966

Williams, Paul; Eidels, Ami; Townsend, James T

2014-10-01

409

Early-night serial awakenings as a new paradigm for studies on NREM dreaming.  

PubMed

A new experimental paradigm called "Early-Night Serial Awakenings" (ENSA) was explored to find out its strengths and weaknesses for psychophysiological studies of NREM sleep dreaming. Five participants spent 20 experimental nights in the sleep laboratory, and were serially awakened with approximately 24-minute intervals during Stages 2 and 3 of NREM sleep. As a total, 164 awakenings were conducted during the sessions that lasted on average 193 min. Altogether, 30% of NREM sleep awakenings led to dream reports, 39% to reports of white dreaming, and 31% to reports of dreamless sleep. Results also show that sleep EEG spectral power, dream recall frequency as well as dream complexity remained stable throughout the serial awakening sessions. We conclude that, as ENSA dreams appeared to be static and very limited in content, the paradigm we identified could be used in future studies to reveal the psychophysiological mechanisms of relatively simple forms of early-night NREM sleep dreaming. PMID:19596384

Noreika, Valdas; Valli, Katja; Lahtela, Hetti; Revonsuo, Antti

2009-10-01

410

Verbal Working Memory and Language Production: Common Approaches to the Serial Ordering of Verbal Information  

PubMed Central

Verbal working memory (WM) tasks typically involve the language production architecture for recall; however, language production processes have had a minimal role in theorizing about WM. A framework for understanding verbal WM results is presented here. In this framework, domain-specific mechanisms for serial ordering in verbal WM are provided by the language production architecture, in which positional, lexical, and phonological similarity constraints are highly similar to those identified in the WM literature. These behavioral similarities are paralleled in computational modeling of serial ordering in both fields. The role of long-term learning in serial ordering performance is emphasized, in contrast to some models of verbal WM. Classic WM findings are discussed in terms of the language production architecture. The integration of principles from both fields illuminates the maintenance and ordering mechanisms for verbal information. PMID:19210053

Acheson, Daniel J.; MacDonald, Maryellen C.

2010-01-01

411

Transcranial magnetic stimulation reveals attentional feedback to area V1 during serial visual search.  

PubMed

Visual search tasks have been used to understand how, where and when attention influences visual processing. Current theories suggest the involvement of a high-level "saliency map" that selects a candidate location to focus attentional resources. For a parallel (or "pop-out") task, the first chosen location is systematically the target, but for a serial (or "difficult") task, the system may cycle on a few distractors before finally focusing on the target. This implies that attentional effects upon early visual areas, involving feedback from higher areas, should be visible at longer latencies during serial search. A previous study from Juan & Walsh (2003) had used Transcranial Magnetic Stimulation (TMS) to support this conclusion; however, only a few post-stimulus delays were compared, and no control TMS location was used. Here we applied TMS double-pulses (sub-threshold) to induce a transient inhibition of area V1 at every post-stimulus delay between 100 ms and 500 ms (50 ms steps). The search array was presented either at the location affected by the TMS pulses (previously identified by applying several pulses at supra-threshold intensity to induce phosphene perception), or in the opposite hemifield, which served as a retinotopically-defined control location. Two search tasks were used: a parallel (+ among Ls) and a serial one (T among Ls). TMS specifically impaired the serial, but not the parallel search. We highlight an involvement of V1 in serial search 300 ms after the onset; conversely, V1 did not contribute to parallel search at delays beyond 100 ms. This study supports the idea that serial search differs from parallel search by the presence of additional cycles of a select-and-focus iterative loop between V1 and higher-level areas. PMID:21611188

Dugué, Laura; Marque, Philippe; VanRullen, Rufin

2011-01-01

412

Serial FDG PET/CT in autoimmune encephalitis with faciobrachial dystonic seizures.  

PubMed

Autoimmune encephalitis (AE) is increasingly recognized as a nonparaneoplastic disorder with autoantibodies to neuronal proteins. Although MRI is frequently unremarkable, PET imaging might contribute to identification of affected brain regions in distinct AE. We report on serial FDG PET in a 72-year-old man with particular AE subtype, with potassium channel complex antibodies and prodromal stage with dystonic seizures. Serial FDG PET/CT revealed that besides limbic structures, basal ganglia are centrally involved and presumably play a key role in the generation of dystonic seizures. PMID:24566395

Kunze, Albrecht; Drescher, Robert; Kaiser, Katharina; Freesmeyer, Martin; Witte, Otto W; Axer, Hubertus

2014-10-01

413

Structure of a photosynthetic reaction centre determined by serial femtosecond crystallography  

PubMed Central

Serial femtosecond crystallography is an X-ray free-electron-laser-based method with considerable potential to have an impact on challenging problems in structural biology. Here we present X-ray diffraction data recorded from microcrystals of the Blastochloris viridis photosynthetic reaction centre to 2.8?Å resolution and determine its serial femtosecond crystallography structure to 3.5?Å resolution. Although every microcrystal is exposed to a dose of 33?MGy, no signs of X-ray-induced radiation damage are visible in this integral membrane protein structure. PMID:24352554

Johansson, Linda C.; Arnlund, David; Katona, Gergely; White, Thomas A.; Barty, Anton; DePonte, Daniel P.; Shoeman, Robert L.; Wickstrand, Cecilia; Sharma, Amit; Williams, Garth J.; Aquila, Andrew; Bogan, Michael J.; Caleman, Carl; Davidsson, Jan; Doak, R Bruce; Frank, Matthias; Fromme, Raimund; Galli, Lorenzo; Grotjohann, Ingo; Hunter, Mark S.; Kassemeyer, Stephan; Kirian, Richard A.; Kupitz, Christopher; Liang, Mengning; Lomb, Lukas; Malmerberg, Erik; Martin, Andrew V.; Messerschmidt, Marc; Nass, Karol; Redecke, Lars; Seibert, M Marvin; Sjöhamn, Jennie; Steinbrener, Jan; Stellato, Francesco; Wang, Dingjie; Wahlgren, Weixaio Y.; Weierstall, Uwe; Westenhoff, Sebastian; Zatsepin, Nadia A.; Boutet, Sébastien; Spence, John C.H.; Schlichting, Ilme; Chapman, Henry N.; Fromme, Petra; Neutze, Richard

2013-01-01

414

Adolescent exposure to nicotine impairs adult serial pattern learning in rats  

Microsoft Academic Search

In the present study investigating the effects of adolescent nicotine exposure on adult serial pattern learning, adolescent\\u000a rats received daily i.p. injections of either 1.0 mg\\/kg nicotine or saline for 5 days per week for 5 weeks beginning on postnatal\\u000a day 25 (P25), then were allowed 35 days drug free. Rats then began training on P95 as adults on a 24-element serial pattern\\u000a composed of

Stephen B. Fountain; James D. Rowan; Brian M. Kelley; Amanda R. Willey; Eric P. Nolley

2008-01-01

415

Modeling syngas-fired gas turbine engines with two dilutants  

NASA Astrophysics Data System (ADS)

Prior gas turbine engine modeling work at the University of Wyoming studied cycle performance and turbine design with air and CO2-diluted GTE cycles fired with methane and syngas fuels. Two of the cycles examined were unconventional and innovative. The work presented herein reexamines prior results and expands the modeling by including the impacts of turbine cooling and CO2 sequestration on GTE cycle performance. The simple, conventional regeneration and two alternative regeneration cycle configurations were examined. In contrast to air dilution, CO2 -diluted cycle efficiencies increased by approximately 1.0 percentage point for the three regeneration configurations examined, while the efficiency of the CO2-diluted simple cycle decreased by approximately 5.0 percentage points. For CO2-diluted cycles with a closed-exhaust recycling path, an optimum CO2-recycle pressure was determined for each configuration that was significantly lower than atmospheric pressure. Un-cooled alternative regeneration configurations with CO2 recycling achieved efficiencies near 50%, which was approximately 3.0 percentage points higher than the conventional regeneration cycle and simple cycle configurations that utilized CO2 recycling. Accounting for cooling of the first two turbine stages resulted in a 2--3 percentage point reduction in un-cooled efficiency, with air dilution corresponding to the upper extreme. Additionally, when the work required to sequester CO2 was accounted for, cooled cycle efficiency decreased by 4--6 percentage points, and was more negatively impacted when syngas fuels were used. Finally, turbine design models showed that turbine blades are shorter with CO2 dilution, resulting in fewer design restrictions.

Hawk, Mitchell E.

416

High-dilution effects revisited. 2. Pharmacodynamic mechanisms.  

PubMed

The pharmacodynamics aspects of homeopathic remedies are appraised by laboratory studies on the biological effects at various levels (cellular, molecular and systemic). The major question is how these medicines may work in the body. The possible answers concern the identification of biological targets, the means of drug-receptor interactions, the mechanisms of signal transmission and amplification, and the models of inversion of effects according to the traditional 'simile' rule. These problems are handled by two experimental and theoretical lines, according to the doses or dilutions considered (low-medium versus high dilutions). Homeopathic formulations in low-medium dilutions, containing molecules in the range of ultra-low doses, exploit the extreme sensitivity of biological systems to exogenous and endogenous signals. Their effects are interpreted in the framework of hormesis theories and paradoxical pharmacology. The hypotheses regarding the action mechanisms of highly diluted/dynamized solutions (beyond Avogadro-Loschmidt limit) variously invoke sensitivity to bioelectromagnetic information, participation of water chains in signalling, and regulation of bifurcation points of systemic networks. High-dilution pharmacology is emerging as a pioneering subject in the domain of nanomedicine and is providing greater plausibility to the puzzling claims of homeopathy. PMID:24439453

Bellavite, Paolo; Marzotto, Marta; Olioso, Debora; Moratti, Elisabetta; Conforti, Anita

2014-01-01

417

Dilution of protein-surfactant complexes: A fluorescence study  

PubMed Central

Dilution of protein–surfactant complexes is an integrated step in microfluidic protein sizing, where the contribution of free micelles to the overall fluorescence is reduced by dilution. This process can be further improved by establishing an optimum surfactant concentration and quantifying the amount of protein based on the fluorescence intensity. To this end, we study the interaction of proteins with anionic sodium dodecyl sulfate (SDS) and cationic hexadecyl trimethyl ammonium bromide (CTAB) using a hydrophobic fluorescent dye (sypro orange). We analyze these interactions fluourometrically with bovine serum albumin, carbonic anhydrase, and beta-galactosidase as model proteins. The fluorescent signature of protein–surfactant complexes at various dilution points shows three distinct regions, surfactant dominant, breakdown, and protein dominant region. Based on the dilution behavior of protein–surfactant complexes, we propose a fluorescence model to explain the contribution of free and bound micelles to the overall fluorescence. Our results show that protein peak is observed at 3 mM SDS as the optimum dilution concentration. Furthermore, we study the effect of protein concentration on fluorescence intensity. In a single protein model with a constant dye quantum yield, the peak height increases with protein concentration. Finally, addition of CTAB to the protein–SDS complex at mole fractions above 0.1 shifts the protein peak from 3 mM to 4 mM SDS. The knowledge of protein–surfactant interactions obtained from these studies provides significant insights for novel detection and quantification techniques in microfluidics. PMID:23868358

Azadi, Glareh; Chauhan, Anuj; Tripathi, Anubhav

2013-01-01

418

A probabilistic analysis of rapid boron dilution scenarios  

SciTech Connect

A probabilistic and deterministic analysis of a rapid boron dilution scenario related to reactor restart was performed. The event is initiated by a loss of off-site power during the startup dilution process. The automatic restart of the charging pump in such cases may lead to the accumulation of a diluted slug of water in the lower plenum. The restart of the reactor coolant pumps may send the diluted slug through the core, adding sufficient reactivity to overcome the shutdown margin and cause a power excursion. The concern is that the power excursion is sufficient in certain circumstances to cause fuel damage. The estimated core damage frequency based on the scoping analysis is 1.0--3.0E-05/yr for the plants analyzed. These are relatively significant values when compared to desirable goals. The analysis contained assumptions related to plant specific design characteristics which may lead to non-conservative estimates. The most important conservative assumptions were that mixing of the injected diluted water is insignificant and that fuel damage occurs when the slug passes through the core.

Kohut, P.; Diamond, D.J.

1993-01-01

419

The Impact of Serial Transitions on Behavioral and Psychological Problems among Children in Child Protection Services  

ERIC Educational Resources Information Center

This study focuses on the impacts of serial transitions on externalized and internalized behavior disorders, anxiety, and depression among children in child protection services. The research was carried out with a sample of 741 children. The findings demonstrate that the number of times a family is blended is a stronger predictive factor for…

Saint-Jacques, Marie-Christine; Cloutier, Richard; Pauze, Robert; Simard, Marie; Gagne, Marie-Helene; Poulin, Amelie

2006-01-01

420

Automatic mosaicking and volume assembly for high-throughput serial-section transmission electron microscopy  

Microsoft Academic Search

We describe a computationally efficient and robust, fully-automatic method for large-scale electron microscopy image registration. The proposed method is able to construct large image mosaics from thousands of smaller, overlapping tiles with unknown or uncertain positions, and to align sections from a serial section capture into a common coordinate system. The method also accounts for nonlinear deformations both in constructing

Tolga Tasdizen; Pavel Koshevoy; Bradley C. Grimm; James R. Anderson; Bryan W. Jones; Carl B. Watt; Ross T. Whitaker; Robert E. Marc

2010-01-01

421

Design of a massively parallel computer using bit serial processing elements  

NASA Technical Reports Server (NTRS)

A 1-bit serial processor designed for a parallel computer architecture is described. This processor is used to develop a massively parallel computational engine, with a single instruction-multiple data (SIMD) architecture. The computer is simulated and tested to verify its operation and to measure its performance for further development.

Aburdene, Maurice F.; Khouri, Kamal S.; Piatt, Jason E.; Zheng, Jianqing

1995-01-01

422

FREQUENCY OF ANEUPLOID SPERMATOZOA STUDIED BY MULTICOLOR FISH IN SERIAL SEMEN SAMPLES  

EPA Science Inventory

Frequency of aneuploid spermatozoa studied by multicolor FISH in serial semen samples M. Vozdova1, S. D. Perreault2, O. Rezacova1, D. Zudova1 , Z. Zudova3, S. G. Selevan4, J. Rubes1,5 1Veterinary Research Institute, Brno, Czech Republic; 2U.S. Environmental Protection A...

423

Forensic DNA against wildlife poaching: Identification of a serial wolf killing in Italy  

Microsoft Academic Search

The recent expansion of the Italian wolf population through the Apennine and western Alps, after centuries of contractions, is causing conflicts with human activities leading to a rise in poaching or illegal killings. Here we show how molecular population genetics has been used to identify a suspect serial wolf killer. We analysed DNA extracted from a necklace made of ten

Romolo Caniglia; Elena Fabbri; Claudia Greco; Marco Galaverni; Ettore Randi

2010-01-01

424

Serials Solutions and LinkFinderPlus at the University of Wales Swansea  

ERIC Educational Resources Information Center

Purpose: To provide practical information on two electronic journal-related products implemented in Library and Information Services at University of Wales Swansea. Design/methodology/approach: An overview is provided of the evaluation of electronic journal management products undertaken and subsequent implementation. Findings: Serials Solutions…

Brown, Andrew; Smyth, Neil

2005-01-01

425

The Inpatient Evaluation and Treatment of a Self-Professed Budding Serial Killer  

Microsoft Academic Search

The authors present the case of a man who was hospitalized after claiming that he was about to become a serial killer. The patient presented with extensive written homicidal fantasies and homicidal intentions without evidence of actual homicidal acts. In addition to routine assessments, hospital staff members used case conferences, psychological testing, outside forensic consultation, and a forensic review process

Andrew D. Reisner; Mark Mcgee; Stephen G. Noffsinger

2003-01-01

426

The utilization of forensic science and criminal profiling for capturing serial killers  

Microsoft Academic Search

Movies and nightly television shows appear to emphasize highly efficient regimens in forensic science and criminal investigative analysis (profiling) that result in capturing serial killers and other perpetrators of homicide. Although some of the shows are apocryphal and unrealistic, they reflect major advancements that have been made in the fields of forensic science and criminal psychology during the past two

John H. White; David Lester; Matthew Gentile; Juliana Rosenbleeth

2011-01-01

427

A serial killer of elderly women: Analysis of a multi-victim homicide investigation  

Microsoft Academic Search

Between 1995 and 1997, in the territories of Southern Italy, there were fifteen murders of elderly women over the age of 70 years old. Initially, however, not all the murders were attributed to a single serial killer. The majority of the victims were stabbed multiple times in the neck, except for three cases in which the cause of death was

Carlo P. Campobasso; Massimo F. Colonna; Felice Carabellese; Ignazio Grattagliano; Chiara Candelli; Robert J. Morton; Roberto Catanesi

2009-01-01

428

She Had to Bad: The Femme Fatale as Serial Killer in 1950s American Pulp Fiction  

Microsoft Academic Search

My thesis, “She Had to Be Bad: The Femme Fatale as Serial Killer in 1950s American Pulp Fiction,” considers the femme fatale in light of popular fiction and the characterization of female criminals in popular culture. It does not address the role of the femme fatale in film, as that has been covered extensively in many critical texts. Instead, it

Leslie Anne Jennings

2008-01-01

429

Bootstrapping while barefoot (crime models vs. theoretical models in the hunt for serial killers)  

Microsoft Academic Search

Investigating random homicides involves constructing models of an odd sort. While the differences between these models and scientific models are radical, calling them models is justified both by functional and structural similarities. Serial homicide investigations illustrate the marked difference between theoretical models in science and the models applied in these criminal investigations. This is further illustrated by considering Glymourian bootstrapping

Jon J. Nordby

1989-01-01

430

When serial killers go unseen: The case of Trevor Joseph Hardy  

Microsoft Academic Search

This article presents a case study of the serial killer Trevor Joseph Hardy — who murdered three young women in Manchester, England between 1974 and 1976, and who is now one of Britain’s longest serving prisoners. Even so, Hardy and his crimes are almost unknown. As such, the article uses the Hardy case to consider academic definitions of ‘newsworthiness’ and

David Wilson; Harriet Tolputt; Nick Howe; Diane Kemp

2010-01-01

431

Construing The Construction Processes Of Serial Killers And Other Violent Offenders: 2. The Limits Of Credulity  

Microsoft Academic Search

This article presents a categorization of pathways to violence and homicide, including serial killing, in terms of personal construct theory. Violent offenders’ reactions to their offences are considered in relation to the degree of consistency between their actions and their construing of the self and the world. Implications for the assessment and treatment of people who have committed acts of

David A. Winter

2007-01-01

432

Comparison of Two Different Spatial Arrays in Relation to Serial Position Effect  

Microsoft Academic Search

The influence of spatial presentation of items on the serial position effect was investigated by presenting items simultaneously either in a vertical list or a diamond arrangement to 30 male and female volunteers from general psychology classes. It was hypothesized that the points of the diamond would serve as spatial anchors and facilitate the recall of adjoining items. The only

Pam Howlett; Sarah C. Sitton

1977-01-01

433

Dendritic Spines of Rat Cerebellar Purkinje Cells: Serial Electron Microscopy with Reference to Their Biophysical Characteristics  

Microsoft Academic Search

We have used serial electron microscopy and Z&dimensional reconstructions of dendritic spines from Purkinje spiny branchlets of normal adult rats to evaluate 2 questions about the relationships of spine geometry to synaptic efficacy. First, do relationships between spine geometry and other anatom- ical indicators of synaptic activity suggest that spine size and shape might be associated with synaptic efficacy? Re-

Kristen M. Harris; John K. Steven

1988-01-01

434

A two-stage model for multiple target detection in rapid serial visual presentation  

Microsoft Academic Search

When 2 targets are presented among distractors in rapid serial visual presentation, correct identification of the 1st target results in a deficit for a 2nd target appearing within 200-500 ms. This attentional blink (AB; J. E. Raymond, K. L. Shapiro, & K. M. Arnell, 1992) was examined for categorically defined targets (letters among nonletters) in 7 experiments. AB was obtained

Marvin M. Chun; Mary C. Potter

1995-01-01

435

Sipping Coffee with a Serial Killer: On Conducting Life History Interviews with a Criminal Genius  

ERIC Educational Resources Information Center

As part of my Ph.D. research on criminal genius, I conducted 44 semi-structured interviews. One of the 44 subjects, in particular, stood out. This noteworthy individual claimed that he had killed 15 people. His story was particularly interesting because--unlike most social research involving serial killers--he claimed that he had never been…

Oleson, J. C.

2004-01-01

436

A Rational Analysis of the Effects of Memory Biases on Serial Reproduction  

ERIC Educational Resources Information Center

Many human interactions involve pieces of information being passed from one person to another, raising the question of how this process of information transmission is affected by the cognitive capacities of the agents involved. Bartlett (1932) explored the influence of memory biases on the "serial reproduction" of information, in which one…

Xu, Jing; Griffiths, Thomas L.

2010-01-01

437

NON-LINEAR REGISTRATION OF SERIAL HISTOLOGICAL IMAGES OF THE MIDDLE EAR Shruti Nambiar1  

E-print Network

is a relatively common disorder. Detailed analyses of the mechanical and acoustical properties of the middle ear in histological images and are important for realistic modelling of middle-ear mechanics and acoustics. Serial such as the joint capsule and the presence of synovial fluid within the joint. Such details are visible only

Funnell, W. Robert J.

438

Phonological Similarity Effects in Memory for Serial Order of Cued Speech.  

ERIC Educational Resources Information Center

Two experiments, one with congenitally deaf and one with hearing individuals, investigated memory for serial order via Cued Speech (CS). Deaf individuals, but not hearing individuals experienced with CS, appeared to use the phonology of CS to support their recall. The recency effect was greater for hearing individuals provided with sound than for…

Leybaert, Jacqueline; Lechat, Josiane

2001-01-01

439

21st Century Shell Game: Cutting Serials in the Electronic Age  

ERIC Educational Resources Information Center

The advent of online journals, bundled packages, and consortial "big deals" means that librarians have to work harder than ever when budget shortfalls require cutting serials. This article recounts the experience of the Houston Academy of Medicine-Texas Medical Center Library in its journal cancellation project of 2002.

Jasper, Richard P.

2005-01-01

440

Progress and Advances in Serial Powering of Silicon Modules for the ATLAS Tracker Upgrade  

NASA Astrophysics Data System (ADS)

It is expected that at SLHC the number of detector channels in the ATLAS Semiconductor Tracker will increase by a factor 10, to cope with the increased luminosity. Currently every detector module has its own power cable, known as independent powering (IP). In the upgrade, this arrangement will no longer be tenable, due to cable volume and power losses. The serial powering alternative scheme, in which supermodules, with many readout hybrids, are connected in a serially powered chain, has been proposed and actively pursued over the last few years by the ATLAS Tracker Upgrade Community. This scheme presents some benefits, including simplicity, lower mass and reduced power losses. On the other hand, grounding, shielding and data transmission schemes are modified with respect to the conventional arrangement. Custom components specifically for serial powering have been produced, including the ABCN-25 readout ASICs and the SPI serial powering regulation ASIC, both in 250 nm CMOS, a dedicated programmable current source and power protection elements. In this paper the latest measurements from testing of the new custom electronics are presented and future plans are outlined.

Villani, E. G.

2011-06-01

441

Metabolic Responses Induced by Serial Harvesting of Alfalfa Pasture Established on Amended Acid Soil  

Microsoft Academic Search

Alfalfa pasture has not been sustainable on the coastal plain of the United States because of its intolerance to soil acidity. This study examined the responses of alfalfa metabolism to differential amendments of acid soil and to serial harvesting. The soil was spatially amended with different quantities of flue gas desulfurization sludge and gypsum after liming to pH 7. The

Godson O. Osuji; Vincent A. Haby; Dennis J. Chessman

2006-01-01

442

Automated Hippocampal Segmentation by Regional Fluid Registration of Serial MRI: Validation and Application in Alzheimer's Disease  

Microsoft Academic Search

The application of voxel-level three-dimensional registration to serial magnetic resonance imaging (MRI) is described. This fluid registration determines deformation fields modeling brain change, which are consistent with a model describing a viscous fluid. The objective was to validate the measurement of hippocampal volumetric change by fluid registration in Alzheimer's disease (AD) against current methodologies. The hippocampus was chosen for this

William R. Crum; Rachael I. Scahill; Nick C. Fox

2001-01-01

443

The relationship of rapid serial naming and word reading in normally developing readers: An exploratory model  

Microsoft Academic Search

Even though researchers have established that rapid serial naming (RSN), or the ability to name within a restricted category of visual stimuli quickly, is a significant predictor of word reading, the predictive nature of RSN is not well understood. To investigate the relationship of RSN and other variables thought to contribute to beginning word reading (phonological awareness, orthographic knowledge, memory

Laurie E. Cutting; Martha Bridge Denckla

2001-01-01

444

A comprehensive review of the Paced Auditory Serial Addition Test (PASAT)  

Microsoft Academic Search

The Paced Auditory Serial Addition Test (PASAT) [Gronwall, D., & Sampson, H. (1974). The psychological effects of concussion. Auckland, New Zealand: Auckland University Press] was developed to assess the effects of traumatic brain injury (TBI) on cognitive functioning. Subsequent research has shown that the PASAT has clinical utility in detecting impairments in cognitive processing in patients with a wide variety

Tom N Tombaugh

2006-01-01

445

9 CFR 113.8 - In vitro tests for serial release.  

Code of Federal Regulations, 2010 CFR

...300; (2) Testing the Master Seed...acceptable to the Animal and Plant Health...potency either by testing a Qualifying Serial in host animals or by providing...results of the testing shall be evaluated...Stage Number of animals Failures...

2010-01-01

446

9 CFR 113.8 - In vitro tests for serial release.  

Code of Federal Regulations, 2011 CFR

...300; (2) Testing the Master Seed...acceptable to the Animal and Plant Health...potency either by testing a Qualifying Serial in host animals or by providing...results of the testing shall be evaluated...Stage Number of animals Failures...

2011-01-01

447

9 CFR 113.8 - In vitro tests for serial release.  

Code of Federal Regulations, 2012 CFR

...300; (2) Testing the Master Seed...acceptable to the Animal and Plant Health...potency either by testing a Qualifying Serial in host animals or by providing...results of the testing shall be evaluated...Stage Number of animals Failures...

2012-01-01

448

9 CFR 113.8 - In vitro tests for serial release.  

...300; (2) Testing the Master Seed...acceptable to the Animal and Plant Health...potency either by testing a Qualifying Serial in host animals or by providing...results of the testing shall be evaluated...Stage Number of animals Failures...

2014-01-01

449

9 CFR 113.8 - In vitro tests for serial release.  

Code of Federal Regulations, 2013 CFR

...300; (2) Testing the Master Seed...acceptable to the Animal and Plant Health...potency either by testing a Qualifying Serial in host animals or by providing...results of the testing shall be evaluated...Stage Number of animals Failures...

2013-01-01

450

Priming from Distractors in Rapid Serial Visual Presentation Is Modulated by Image Properties and Attention  

ERIC Educational Resources Information Center

We investigated distractor processing in a dual-target rapid serial visual presentation (RSVP) task containing familiar objects, by measuring repetition priming from a priming distractor (PD) to Target 2 (T2). Priming from a visually identical PD was contrasted with priming from a PD in a different orientation from T2. We also tested the effect of…

Harris, Irina M.; Benito, Claire T.; Dux, Paul E.

2010-01-01

451

Serials vs. the Dollar Dilemma: Currency Swings and Rising Costs Play Havoc with Prices.  

ERIC Educational Resources Information Center

This periodical price survey examines pricing trends, currency fluctuation and other predictors of 1996 serials costs. Tables are derived from analysis of three Institute for Scientific Information (ISI) databases and reflect subscription rates of large libraries. Sidebars include cost history information specific to mid-size to smaller academic…

Ketcham, Lee; Born, Kathleen

1995-01-01

452

Serial linkage of target selection for orienting and tracking eye movements  

Microsoft Academic Search

Many natural actions require the coordination of two different kinds of movements. How are targets chosen under these circumstances: do central commands instruct different movement systems in parallel, or does the execution of one movement activate a serial chain that automatically chooses targets for the other movement? We examined a natural eye tracking action that consists of orienting saccades and

Stephen G. Lisberger; Justin L. Gardner

2002-01-01

453

Individual Study, Pretesting, and Serial Mastery as Strategies in Teaching School Concepts.  

ERIC Educational Resources Information Center

Three strategies frequently employed in individualized instruction were tested in a three-way repeated measures design that involved eight computer exercises over a period of 6 weeks. Exercises compared individual with paired study, pretests with no pretests, and serial with parallel mastery. Posttests revealed an advantage for individual study…

McMullen, David W.

454

Joint Stiffness Identification of Six-revolute Industrial Serial Robots Claire Dumas  

E-print Network

Joint Stiffness Identification of Six-revolute Industrial Serial Robots Claire Dumas , St.ec-nantes.fr Abstract Although robots tend to be as competitive as CNC machines for some operations, they are not yet the stiffness of industrial robots from robot manufacturers. As a consequence, this paper introduces a robust

Paris-Sud XI, Université de

455

Episodic versus Semantic Memory: An Exploration of Models of Memory Decay in the Serial Attention Paradigm  

E-print Network

of these formulations should find our comparisons to be at least interesting and, perhaps, disturbing. Task Switching and the Serial Attention Paradigm The study of task switching examines the costs and mechanisms required to rapidly switch from one task to another. In the basic task switching experiment, par- ticipants either

Gray, Wayne

456

Transcranial Magnetic Stimulation Reveals Attentional Feedback to Area V1 during Serial Visual Search  

E-print Network

Transcranial Magnetic Stimulation Reveals Attentional Feedback to Area V1 during Serial Visual study from Juan & Walsh (2003) had used Transcranial Magnetic Stimulation (TMS) to support, Marque P, VanRullen R (2011) Transcranial Magnetic Stimulation Reveals Attentional Feedback to Area V1

Paris-Sud XI, Université de

457

Serial proton magnetic resonance spectroscopy in a patient with the interval form of carbon monoxide poisoning  

Microsoft Academic Search

Serial proton magnetic resonance spectroscopy (1H-MRS) studies were performed from immediately after the appearance of sequelae in a patient with the interval form of carbon monoxide (CO) poisoning. The volume of interest was set over the frontal lobe white matter. In the early period a persistent increase in choline was found, which was thought to reflect the course of progressive

T Murata; S Itoh; Y Koshino; M Omori; I Murata; K Sakamoto; K Isaki; H Kimura; Y Ishii

1995-01-01

458

Component Processes in Reading: Shared and Unique Variance in Serial and Isolated Naming Speed  

ERIC Educational Resources Information Center

Reading ability is comprised of several component processes. In particular, the connection between the visual and verbal systems has been demonstrated to play an important role in the reading process. The present study provides a review of the existing literature on the visual verbal connection as measured by two tasks, rapid serial naming and…

Logan, Jessica A. R.; Schatschneider, Christopher

2014-01-01

459

Automated Detection and Segmentation of Synaptic Contacts in Nearly Isotropic Serial Electron Microscopy Images  

Microsoft Academic Search

We describe a protocol for fully automated detection and segmentation of asymmetric, presumed excitatory, synapses in serial electron microscopy images of the adult mammalian cerebral cortex, taken with the focused ion beam, scanning electron microscope (FIB\\/SEM). The procedure is based on interactive machine learning and only requires a few labeled synapses for training. The statistical learning is performed on geometrical

Anna Kreshuk; Christoph N. Straehle; Christoph Sommer; Ullrich Koethe; Marco Cantoni; Graham Knott; Fred A. Hamprecht; Steven Barnes

2011-01-01

460

Serial changes in cardiac output during normal pregnancy: a Doppler ultrasound study  

Microsoft Academic Search

Objectives: To determine the direction and magnitude of change in cardiac output (CO) during pregnancy. Study design: We performed serial measurements of CO on five occasions from 24 weeks gestation to term and once during the puerperium in 26 normal pregnancies (156 measurements) using Doppler ultrasound measurement of flow velocity profiles and aortic root cross sectional area. Result: CO increased

Terence G. Hennessy; Dermot MacDonald; Marie S. Hennessy; Margaret Maguire; Sean Blake; Hugh A. McCann; Declan D. Sugrue

1996-01-01

461

Crime scene analysis and the escalation of violence in serial rape  

Microsoft Academic Search

The current study examines the crime scene behavior manifest by 108 serial rapists responsible for the perpetration of 565 rapes across various cities within the US. The goal of the current study is to identify which aspects of crime scene behavior reported to law enforcement by the victim are most useful in predicting, early in a series of offenses, which

Janet Warren; Roland Reboussin; Robert R Hazelwood; Natalie A Gibbs; Susan L Trumbetta; Andrea Cummings

1999-01-01

462

Using DERIVE's Graphics Capabilities to Locate the Home Base of a Serial Criminal  

ERIC Educational Resources Information Center

This article will expand upon the techniques of Criminologist, D. Kim Rossmo, and Social Psychologist, David Canter for determining a serial criminal's base of operations. The basic framework for our investigation is that of Rossmo, but uses a different criterion for analysing the relationship of points within the hunting area defined by the crime…

Leinbach, Carl

2011-01-01

463

SEGMENTATION OF SERIAL MRI OF TBI PATIENTS USING PERSONALIZED ATLAS CONSTRUCTION AND TOPOLOGICAL CHANGE ESTIMATION  

E-print Network

SEGMENTATION OF SERIAL MRI OF TBI PATIENTS USING PERSONALIZED ATLAS CONSTRUCTION AND TOPOLOGICAL University of California at Los Angeles ABSTRACT Traumatic brain injury (TBI) due to falls, car accidents). In this paper, we propose a method for segmenting longitudinal brain MR images with TBI us- ing personalized

Prastawa, Marcel

464

The Brain's Router: A Cortical Network Model of Serial Processing in the Primate Brain  

Microsoft Academic Search

The human brain efficiently solves certain operations such as object recognition and categorization through a massively parallel network of dedicated processors. However, human cognition also relies on the ability to perform an arbitrarily large set of tasks by flexibly recombining different processors into a novel chain. This flexibility comes at the cost of a severe slowing down and a seriality

Ariel Zylberberg; Diego Fernández Slezak; Pieter R. Roelfsema; Stanislas Dehaene; Mariano Sigman

2010-01-01

465

Between a ROC and a hard place: a method for linking serial burglaries bymodus operandi  

Microsoft Academic Search

The purpose of this study is to determine if readily available information about commer- cial and residential serial burglaries, in the form of the offender's modus operandi, pro- vides a statistically significant basis for accurately linking crimes committed by the same offender. Logistic regression analysis is applied to examine the degree to which various linking features can be used to

Craig Bennell; Natalie J. Jones

2005-01-01

466

Reference Aid: Supplemental List of Current Chinese Serial Publications, 1980 Edition.  

National Technical Information Service (NTIS)

This reference aid is a supplement to REFERENCE AID: CURRENT CHINESE SERIAL PUBLICATIONS 1980 EDITION, JPRS 75007. It contains the titles and other publication data of 216 new titles as well as old publications which have resumed publication since 1 Janua...

1980-01-01

467

What Discrete and Serial Rapid Automatized Naming Can Reveal about Reading  

ERIC Educational Resources Information Center

Serial rapid automized naming (RAN) has been often found to correlate more strongly with reading than discrete RAN. This study aimed to demonstrate that the strength of the RAN-reading fluency relationship is dependent on the format of both RAN and the reading task if the reading task consists of sight words. Seventy-one first-grade, 74…

de Jong, Peter F.

2011-01-01

468

Serially multiplexed dual-point fiber-optic acoustic emission sensor  

Microsoft Academic Search

Development of a serially multiplexed fiber-optic acoustic emission (AE) sensor is described. The sensor detects AE events in real time at two different points along the length of an optical fiber. The time-domain waveform contains signals from the two locations, and a method is introduced for identification of the signals. Detection and identification of signals along a single data stream

Changsen Sun; Yujin Liang; Farhad Ansari

2004-01-01

469

Evidence for a Specific Impairment of Serial Order Short-Term Memory in Dyslexic Children  

ERIC Educational Resources Information Center

In order to better understand the nature of verbal short-term memory (STM) deficits in dyslexic children, the present study used the distinction between item and serial order retention capacities in STM tasks. According to recent STM models, storage of verbal item information depends very directly upon the richness of underlying phonological and…

Perez, Trecy Martinez; Majerus, Steve; Mahot, Aline; Poncelet, Martine

2012-01-01

470

Large-Scale Serial Analysis of Gene Expression Reveals Genes Differentially Expressed in Ovarian Cancer1  

Microsoft Academic Search

Difficulties in the detection, diagnosis, and treatment of ovarian cancer result in an overall low survival rate of women with this disease. A better understanding of the pathways involved in ovarian tumorigenesis will likely provide new targets for early and effective intervention. Here, we have used serial analysis of gene expression (SAGE) to generate global gene expression profiles from various

Colleen D. Hough; Cheryl A. Sherman-Baust; Ellen S. Pizer; F. J. Montz; Dwight D. Im; Neil B. Rosenshein; Kathleen R. Cho; Gregory J. Riggins; Patrice J. Morin

2000-01-01

471

Quality assurance of serial tomotherapy for head and neck patient treatments  

Microsoft Academic Search

Purpose: A commercial serial tomotherapy intensity-modulated radiation therapy (IMRT) treatment planning (Peacock, NOMOS Corp., Sewickley, PA) and delivery system is in clinical use. The dose distributions are highly conformal, with large dose gradients often surrounding critical structures, and require accurate localization and dose delivery. Accelerator and patient-specific quality assurance (QA) procedures have been developed that address the localization, normalization, and

Daniel A Low; K. S. Clifford Chao; Sasa Mutic; Russell L Gerber; Carlos A Perez; James A Purdy

1998-01-01

472

Collaborative memory in a serial combination procedure Annie Stanfield Ditta and Mark Steyvers  

E-print Network

, Roediger et al. (2001) showed false memories implanted by a confederate are more likely to be acceptedCollaborative memory in a serial combination procedure Annie Stanfield Ditta and Mark Steyvers a new approach for studying collaborative memory that examines people's editing processes for naturally

Steyvers, Mark

473

The Phenomenon of Serial Murder and the Judicial Admission of Criminal Profiling in Italy  

Microsoft Academic Search

\\u000a This chapter explores three broad issues related to criminal profiling in Italy. Namely, the concept and role of crime analysis\\u000a and criminal profiling, the phenomenon of serial murder in Italy, and the application of crime analysis and criminal profiling\\u000a within the context of the Italian judicial system.

Angelo Zappalá; Dario Bosco

474

The creation of a brain atlas for image guided neurosurgery using serial histological data  

Microsoft Academic Search

Digital and print brain atlases have been used with success to help in the planning of neurosurgical interventions. In this paper, a technique presented for the creation of a brain atlas of the basal ganglia and the thalamus derived from serial histological data. Photographs of coronal histological sections were digitized and anatomical structures were manually segmented. A slice-to-slice nonlinear registration

M. Mallar Chakravarty; Gilles Bertrand; Charles P. Hodge; Abbas F. Sadikot; D. Louis Collins

2006-01-01

475

Iterative joint channel decoding of correlated sources employing serially concatenated convolutional codes  

Microsoft Academic Search

This correspondence looks at the problem of joint decoding of serially concatenated convolutional codes (SCCCs) used for channel coding of multiple correlated sources. We assume a simple model whereby two correlated sources transmit SCCC encoded data to a single destination receiver. We do not assume the existence of, nor do we use channel side information at the receiver. In particular,

Fred Daneshgaran; Massimiliano Laddomada; Marina Mondin

2005-01-01

476

Cross-Linguistic Differences in the Immediate Serial Recall of Consonants versus Vowels  

ERIC Educational Resources Information Center

The current study investigated native English and native Arabic speakers' phonological short-term memory for sequences of consonants and vowels. Phonological short-term memory was assessed in immediate serial recall tasks conducted in Arabic and English for both groups. Participants (n = 39) heard series of six consonant-vowel syllables and wrote…

Kissling, Elizabeth M.

2012-01-01

477

Efficient Algorithm for ``On-the-Fly'' Error Analysis of Local or Distributed Serially Correlated Data  

E-print Network

Efficient Algorithm for ``On-the-Fly'' Error Analysis of Local or Distributed Serially Correlated.interscience.wiley.com). Abstract: We describe the Dynamic Distributable Decorrelation Algorithm (DDDA) which efficiently calculates of a calculation efficiently ``on-the-fly.'' Quantum Monte Carlo calcu- lations are presented to illustrate ``on-the-fly

Goddard III, William A.

478

Removing the confound of time in investigating the regulation of serial behaviours: testosterone, prolactin  

E-print Network

Removing the confound of time in investigating the regulation of serial behaviours: testosterone in the course of breeding. We quantified immunoreactive prolactin (ir-prolactin) and testosterone concentrations testosterone decreased with the transition from sexual to parental behaviour. ir-Prolactin increased with date

Sockman, Keith W.

479

Consumer memory for television advertising: A field study of duration, serial position and competition effects  

Microsoft Academic Search

The authors simultaneously analyze the impact on consumer memory of the duration and serial position of a commercial and of the number of competing commercials in a block using a marketplace database of 2,677 television commercials. Their results indicate that duration, competition, and the time lag until the onset of a commercial in a block have large effect sizes, while

Rik G. M. Pieters; Tammo H. A. Bijmolt

1997-01-01

480

A content analysis of library & information science serial literature published in Denmark, 1957–1986  

Microsoft Academic Search

A content analysis of Danish library and information science (LIS) serial literature was conducted to determine the subject focus of the literature from 1957 to 1986. Two nonresearch journals, the union-owned periodical Bibliotek 70, and Bogens Verden published by the Danish Library Association, produced both the greatest number of articles and the largest number of pages. Throughout the 30 years

Leif Kajberg

1996-01-01

481

An Investigation of the Costs and Benefits of On-Line Serials Handling.  

National Technical Information Service (NTIS)

This investigation has been designed to establish the costs and benefits of an optimized on-line serials handling system and to compare these with an existing manual system. The study has been separated into five stages as follows: (1) a systems analysis ...

D. Shaw

1980-01-01

482

Short-Term Memory for Serial Order: A Recurrent Neural Network Model  

ERIC Educational Resources Information Center

Despite a century of research, the mechanisms underlying short-term or working memory for serial order remain uncertain. Recent theoretical models have converged on a particular account, based on transient associations between independent item and context representations. In the present article, the authors present an alternative model, according…

Botvinick, Matthew M.; Plaut, David C.

2006-01-01

483

Serial Scanning and Registration of High Resolution Quantitative Computed Tomography Volume Scans for the Determination of Local Bone Density Changes  

NASA Technical Reports Server (NTRS)

Progress in development of the methods required to study bone remodeling as a function of time is reported. The following topics are presented: 'A New Methodology for Registration Accuracy Evaluation', 'Registration of Serial Skeletal Images for Accurately Measuring Changes in Bone Density', and 'Precise and Accurate Gold Standard for Multimodality and Serial Registration Method Evaluations.'

Whalen, Robert T.; Napel, Sandy; Yan, Chye H.

1996-01-01

484

Philippine Trading volume and serial correlation in stock returns in an emerging market : a case study of Pakistan  

Microsoft Academic Search

This paper examines the relationship between aggregate stock market trading volume and serial correlation of daily stock returns from December 1991 to April 2006. The empirical results reveal that there is a first-order positive autocorrelation between future and present returns. The serial correlation becomes negative when present returns are weighted by a change in the trading volume. This indicates that

Mohammed Nishat; Khalid Mustafa

2008-01-01

485

'The Great Good Place' No More? Integrating and Dismantling Oppositional Discourse in Some Recent Examples of Serial Killer Fiction  

Microsoft Academic Search

Serial killer narratives delight in portraying a gothic social landscape of pervasive and endemic cri me, violence and evil in a postmodern context of apathy, indifference and institutional incompetence. In this paper I analyse the extent of the critique of contemporary society in this popular genre. Using some recent examples of serial killer narratives - both novels and films -

Isabel Santaulària

486

Transfer in SLA and Creoles: The Implications of Causative Serial Verbs in the Interlanguage of Vietnamese ESL Learners  

ERIC Educational Resources Information Center

This paper presents a study that attributes verb serialization in the interlanguage of Vietnamese-speaking ESL learners to language transfer and, furthermore, puts forward the view that such transfer bears a resemblance to substrate influence in creoles with serial verb constructions (SVCs). In a task that elicited English causatives through…

Helms-Park, Rena

2003-01-01

487

Efficiency of a third serial sputum smear examination in the diagnosis of tuberculosis in Moldova and Uganda  

Microsoft Academic Search

SETTING: Twenty-four and 30 tuberculosis (TB) micros- copy laboratories in Moldova and Uganda, respectively. OBJECTIVE: To estimate the workload required to iden- tify one additional case of TB with a third serial sputum smear examination. METHODS: Retrospective laboratory register study to determine the prevalence and the incremental yield of TB cases from a third serial sputum smear examination among suspects

A. Katamba; D. Laticevschi; H. L. Rieder

488

Gas dilution system results and application to acid rain utilities  

SciTech Connect

In 1997, the United States EPA will remove restrictions preventing acid rain utilities from using gas dilution systems for calibration or linearity studies for continuous emissions monitoring, Test Method 205 in 40CFR51 requires that a gas dilution system must produce calibration gases whose measured values are within {+-}2% of predicted values. This paper presents the evaluation of the Environics/CalMat 2020 Dilution System for use in calibration studies. Internal studies show that concentrations generated by this unit are within {+-}0.5% of predicted values. Studies are being conducted by several acid rain utilities to evaluate the Environics/CalMat system using single minor component calibration standards. In addition, an internally generated study is being performed to demonstrate the system`s accuracy using a multi-component gas mixture. Data from these tests will be presented in the final version of the paper.

Jolley-Souders, K.; Geib, R. [Matheson Gas Products, Montgomeryville, PA (United States); Dunn, C. [Environics, Inc., Tolland, CT (United States)

1997-12-31

489

Transient phenomena initiating phase transition in dilution refrigerator  

NASA Astrophysics Data System (ADS)

We have analysed the transient processes in a Dilution Refrigerator (DR) leading to phase separation of 3He-4He mixture into concentrated and dilute solutions using an extended SIDFO (Simulation of Integrated Dilution refrigerator For Optimisation) Pradhan et al. (2013) analysis tool. The evolution of the phase separation interface along the concentrated channel and its arrival in the mixing chamber for a given physical situation has been thoroughly examined. The significance of the 3He/4He composition in the mixer, the flow rate and the still power on the phase separation is presented here. The consequences of several relevant thermodynamic parameters and the composition of isotopic mixture for successful function of the DR is also discussed in this paper.

Pradhan, Jedidiah; Das, Nisith K.; Chakrabarti, Alok

2014-09-01

490

Quasiclassical molecular dynamics for the dilute Fermi gas at unitarity  

NASA Astrophysics Data System (ADS)

We study the dilute Fermi gas at unitarity using molecular dynamics with an effective quantum potential constructed to reproduce the quantum two-body density matrix at unitarity. Results for the equation of state, the pair-correlation function, and the shear viscosity are presented. These quantities are well understood in the dilute, high-temperature limit. Using molecular dynamics we determine higher-order corrections in the diluteness parameter n?3, where n is the density and ? is the thermal de Broglie wavelength. In the case of the contact density, which parameterizes the short distance behavior of the correlation function, we find that the results of molecular dynamics interpolate between the truncated second- and third-order virial expansion and are in excellent agreement with existing T-matrix calculations. For the shear viscosity we reproduce the expected scaling behavior at high temperature, ?˜1/?3, and we determine the leading density-dependent correction to this result.

Dusling, K.; Schäfer, T.

2012-12-01

491

Application of Cryocoolers to a Vintage Dilution Refrigerator  

SciTech Connect

A dilution refrigerator is required for 50mK detector operation of CDMS (Cryogenic Dark Matter Search). Besides shielding the dilution refrigerator itself, the liquid nitrogen shield and liquid helium bath in the refrigerator cool the detector cryostat heat shields and cool electronics, resulting in significant external heat loads at 80K and at 4K. An Oxford Instruments Kelvinox 400 has served this role for ten years but required daily transfers of liquid nitrogen and liquid helium. Complicating the cryogen supply is the location 800 meters below ground in an RF shielded, class 10000 clean room at Soudan, MN. Nitrogen and helium re-liquefiers using cryocoolers were installed outside the clean room and continuously condense room temperature gas and return the liquids to the dilution refrigerator through a transfer line. This paper will describe the design, installation, controls and performance of liquefaction systems.

Schmitt, Richard; Smith, Gary; Ruschman, Mark; /Fermilab; Beaty, Jim; /Minnesota U.

2011-06-06

492

Dilution cycle control for an absorption refrigeration system  

DOEpatents

A dilution cycle control system for an absorption refrigeration system is disclosed. The control system includes a time delay relay for sensing shutdown of the absorption refrigeration system and for generating a control signal only after expiration of a preselected time period measured from the sensed shutdown of the absorption refrigeration system, during which the absorption refrigeration system is not restarted. A dilution cycle for the absorption refrigeration system is initiated in response to generation of a control signal by the time delay relay. This control system is particularly suitable for use with an absorption refrigeration system which is frequently cycled on and off since the time delay provided by the control system prevents needless dilution of the absorption refrigeration system when the system is turned off for only a short period of time and then is turned back on.

Reimann, Robert C. (Lafayette, NY)

1984-01-01

493

Serial intralesional injections of infliximab in small bowel Crohn's strictures are feasible and might lower inflammation  

PubMed Central

Background Crohn’s disease can cause strictures throughout the gastrointestinal tract. Endoscopic balloon dilatation is a well-established treatment, but recurrence is seen in up to three out of four cases. Infliximab is playing an increasingly important role in the modern systemic treatment of severe Crohn’s disease. Combining the anti-inflammatory effects of infliximab with the proven effect of endoscopic balloon dilatation could possibly improve outcome. In small studies, intralesional injections in perianal fistulas have been effective and endoscopic injection therapy in colonic strictures is feasible. Objective We wanted to assess whether serial intralesional injection of infliximab in small bowel strictures is feasible and reduces local inflammation. Methods We included six patients with Crohn’s disease and inflammatory small bowel strictures. They were treated with endoscopic serial balloon dilatation. Subsequent to each dilatation, 40 mg infliximab was injected submucosally. A modified simplified endoscopic score for Crohn’s disease was used for the involved area before the initial treatment and at the final follow-up after six months. Complications and development of symptoms were registered. Results Balloon dilatation and serial injection of infliximab were accomplished in five out of six patients. One patient completed the serial balloon dilatations and follow-up but received only one infliximab injection. The modified simplified endoscopic score for Crohn’s disease decreased in all patients. There were no adverse events registered and all patients described themselves as feeling well. Conclusions Combining balloon dilatation of strictures with serial intralesional injection of infliximab in Crohn’s disease of the small bowel is feasible and seems successful in reducing inflammation. PMID:25360319

Hendel, Jakob; Vilmann, Peter

2014-01-01

494

Use of an Eductor to Reliably Dilute a Plutonium Solution  

SciTech Connect

Savannah River Site (SRS) in South Carolina is dissolving Pu239 scrap, which is a legacy from the production of nuclear weapons materials, and will later convert it into oxide form to stabilize it. An eductor has been used to both dilute and transfer a plutonium containing solution between tanks. Eductors have the advantages of simplicity and no moving parts. Reliable control of dilution is important because the geometry of the receiving tank could potentially allow a nuclear criticality. Dilution factor was to have been controlled by the appropriate choice of flow restrictor in the line between the plutonium solution tank and the eductor. However, dilution factors measured for liquid transfers with different flow restrictors showed unexpected trends, causing concern that the process was not well understood. As a result, the performance of the eductor and associated piping were analyzed using a mathematical model. The one dimensional, two phase model accounted for eductor performance and for air and vapor coming out of solution at low pressures. The unexpected trends were shown to be the result of variations in viscosities and densities of both the plutonium solution and the nitric acid solution used as both the motive fluid and diluent. The model agreed well with existing data and was then used to make pre-test predictions of flows for four solution transfers with good agreement. This provided confidence that the eductor system was a reliable method for obtaining specified dilution factors. Based on model results, recommendations were made and implemented for the operation of the eductor transfer system. One unexpected result of the analysis was the observation that slow corrosion inside the eductor is increasing the dilution factor, which is a conservative trend.

Steimke, J.L.

1999-03-23

495

Transport theory for a dilute Bose-Einstein condensate  

NASA Astrophysics Data System (ADS)

We obtain microscopic expressions for the six hydrodynamic modes of a dilute Bose-Einstein condensate: two transverse (shear) modes and four longitudinal modes corresponding to the first sound (elastic waves) and second sound (temperature waves). Our microscopic expressions include both the speed of the two types of sound and the rate of relaxation of the sound waves. We obtain numerical values for the shear viscosity of a dilute BEC composed of bosons which interact via a contact potential. Our values for the shear viscosity are obtained using the eigenvalues and eigenvectors of the three types of collision operators that govern the relaxation of the condensate.

Reichl, L. E.; Gust, Erich D.

2013-11-01

496

Evaluation of two gas-dilution methods for instrument calibration  

NASA Technical Reports Server (NTRS)

Two gas dilution methods were evaluated for use in the calibration of analytical instruments used in air pollution studies. A dual isotope fluorescence carbon monoxide analyzer was used as the transfer standard. The methods are not new but some modifications are described. The rotary injection gas dilution method was found to be more accurate than the closed loop method. Results by the two methods differed by 5 percent. This could not be accounted for by the random errors in the measurements. The methods avoid the problems associated with pressurized cylinders. Both methods have merit and have found a place in instrument calibration work.

Evans, A., Jr.

1977-01-01

497

Study on low temperature facetting growth of polycrystalline silicon thin films by ECR downstream plasma CVD with different hydrogen dilution  

NASA Astrophysics Data System (ADS)

Polycrystalline silicon films with grain size of 1 ?m have been successfully deposited on glass substrates using electron cyclotron resonance chemical vapor deposition (ECR-CVD) with hydrogen dilution method at 250°C and without any thermal annealing. The deposited poly-Si films exhibited severe `hill and valley' surface roughness and facets structures. The X-ray diffraction spectra showed that the dominant crystal textures are <220> and <111> orientations. The leaf-like two-fold symmetrical grain shape and the corresponding crystallography diffraction pattern indicated the orientation of largest grain is <110>. The dark field TEM image also showed the upside octahedral facets shape. Considering the effect of orientation on deposition rate and symmetry, the possible facets orientation should be <311>. Moreover, the grain sizes of poly-Si thin films deposited on bare Si wafers and on oxidized Si or glass substrates were almost the same. In situ optical emission spectroscopy (OES) and mass spectrometry were applied to study this peculiar growth processes. Emission lines from the Balmer series of atomic hydrogen (H ?: 656.3 nm, H ?: 486.4 nm), SiH (412.8 nm), Si (251.6 nm, 288.2 nm), and Ar (750.4 nm) were monitored. The correlation of gas phase species with the structure properties of poly-Si thin films indicated that the SiH 3 radicals are the dominant precursors at high hydrogen dilution ratio and SiH 2 radicals dominate the lower hydrogen dilution growth processes. Based on the facts that SiH 2 precursors can be inserted into any silicon-hydrogen bonds, whereas SiH 3 can react only with sites associated with dangling bonds. Therefore, the surface mobility or the effective diffusion length of SiH 2 precursors will be shorter and the anisotropy of surface sticking coefficient will not be so serious. The grain shape will be more symmetrical and grain orientation will be dependent on the atomic arrangement of the substrates. Due to the three-dimensional upward growth characteristics, the most likely orientation will be <111> for poly-Si thin film growth on amorphous substrates. The growth surface of thin films deposited with high hydrogen dilution is covered by high-density atomic hydrogen and the dangling bonds are terminated with the atomic hydrogen. Thus, the SiH 3 precursors will search the sites without hydrogen termination. Their sticking coefficient will be very small and the effective diffusion length will be long. Moreover, due to the geometrical characteristics of diamond structure, the <110> surface (low index surface with least dangling bond density) will be the fastest growth direction. The size of grains is enhanced by surface diffusion of SiH 3 and exhibits facetting growth and textural phenomena.

Hsiao, H. L.; Hwang, H. L.; Yang, A. B.; Chen, L. W.; Yew, T. R.

1999-04-01

498

Response of rodents to inhaled diluted diesel exhaust: biochemical and cytological changes in bronchoalveolar lavage fluid and in lung tissue  

SciTech Connect

The effect of long-term (24 months) inhalation of diesel exhaust on the bronchoalveolar region of the respiratory tract of rodents was assessed by serial (every 6 months) analysis of bronchoalveolar lavage fluid (BALF) and of lung tissue from F344/Crl rats and CD-1 mice (both sexes) exposed to diesel exhaust diluted to contain 0, 0.35, 3.5, or 7.0 mg soot/m3. The purpose of the study was twofold. One was to assess the potential health effects of inhaling diluted exhaust from light-duty diesel engines. The second was to determine the usefulness of BALF analysis in detecting the early stages in the development of nononcogenic lung disease and differentiating them from the normal repair processes. No biochemical or cytological changes in BALF or in lung tissue were noted in either species exposed to the lowest, and most environmentally relevant, concentration of diesel exhaust. In the two higher levels of exposure, a chronic inflammatory response was measured in both species by dose-dependent increases in inflammatory cells, cytoplasmic and lysosomal enzymes, and protein in BALF. Histologically, after 1 year of exposure, the rats had developed focal areas of fibrosis associated with the deposits of soot, while the mice, despite a higher lung burden of soot than the rats, had only a fine fibrillar thickening of an occasional alveolar septa in the high-level exposure group. Higher increases in BALF beta-glucuronidase activity and in hydroxyproline content accompanied the greater degree of fibrosis in the rat. BALF levels of glutathione (GSH) and glutathione reductase activity increased in a dose-dependent fashion and were higher in mice than in rats. Lung tissue GSH was depleted in a dose-dependent fashion in rats but was slightly increased in mice.

Henderson, R.F.; Pickrell, J.A.; Jones, R.K.; Sun, J.D.; Benson, J.M.; Mauderly, J.L.; McClellan, R.O.

1988-10-01

499

Characterization of an anaerobic baffled reactor treating dilute aircraft de-icing fluid and long term effects of operation on granular biomass.  

PubMed

Successful treatment of dilute ethylene glycol based-aircraft de-icing fluid (ADF) was achieved using a four compartment, anaerobic baffled reactor (ABR). Three ADF concentrations (0.04, 0.07, and 0.13%v/v) were continuously fed at different hydrological retention times (HRTs; 24, 12, 6 and 3h) with concomitant organic loading rates (OLRs) varying between 0.3 and 6 kg chemical oxygen demand (COD)/m(3)/d. ABR achieved over 75% soluble COD removal and an average methane production potential of 0.30+/-0.05LCH(4)/gCOD(removed) at 33 degrees C for the experimental conditions evaluated. The different experimental conditions tested and a four-month summer shut-down simulation had no significant effect on reactor performance or on the settling characteristics of the granular biomass, which remained almost constant during the study. Biomass specific acetoclastic activity however, changed through the study; increasing two fold for the last three compartments and decreasing almost the same magnitude for the first compartment compared to inoculum, suggesting that a new distribution of microbial consortia was established in each compartment of the reactor by the end of the study. PMID:20005091

Marin, Juan; Kennedy, Kevin J; Eskicioglu, Cigdem

2010-04-01

500

EDITORIAL: Focus on Dilute Magnetic Semiconductors FOCUS ON DILUTE MAGNETIC SEMICONDUCTORS  

NASA Astrophysics Data System (ADS)

This focus issue of New Journal of Physics is devoted to the materials science of dilute magnetic semiconductors (DMS). A DMS is traditionally defined as a diamagnetic semiconductor doped with a few to several atomic per cent of some transition metal with unpaired d electrons. Several kinds of dopant dopant interactions can in principle couple the dopant spins leading to a ferromagnetic ground state in a dilute magnetic system. These include superexchange, which occurs principally in oxides and only between dopants with one intervening oxygen, and double exchange, in which dopants of different formal charges exchange an electron. In both of these mechanisms, the ferromagnetic alignment is not critically dependent on free carriers in the host semiconductor because exchange occurs via bonds. A third mechanism, discovered in the last few years, involves electrons associated with lattice defects that can apparently couple dopant spins. This mechanism is not well understood. Finally, the most desirable mechanism is carrier-mediated exchange interaction in which the dopant spins are coupled by itinerant electrons or holes in the host semiconductor. This mechanism introduces a fundamental link between magnetic and electrical transport properties and offers the possibility of new spintronic functionalities. In particular electrical gate control of ferromagnetism and the use of spin polarized currents to carry signals for analog and digital applications. The spin light emitting diode is a prototypical device of this kind that has been extensively used to characterize the extent of spin polarization in the active light emitting semiconductor heterostructure. The prototypical carrier mediated ferromagnetic DMS is Mn-doped GaAs. This and closely related narrow gap III V materials have been very extensively studied. Their properties are generally quite well understood and they have led to important insights into fundamental properties of ferromagnetic systems with strong spin-orbit coupling. They have also led to the demonstration of a wide range of novel phenomena including some, like tunneling anisotropic magnetoresistance, which have subsequently been achieved in metal ferromagnetic systems. However despite considerable effort over many years the maximum Curie point achieved in (Ga,Mn)As is still less than 200 K. So unless some major new breakthrough is achieved these materials are unlikely to be of use for practical spin electronics technologies. In 2000, Dietl et al [1] published a seminal paper in which mean field theory was used to predict which of the common diamagnetic semiconductors would exhibit a Curie point above ambient if doped with 5 at.% Mn and a hole concentration of 3.5 × 1020 cm-3. Of the many host semiconductors simulated, only ZnO and GaN were predicted to exhibit a critical temperature in excess of 300 K. Since 2000, high-Tc DMS research has proliferated in both experimental and theoretical arenas. Many papers have been published containing claims of new DMS materials based largely on limited film growth, powder diffraction, and magnetometry. In these papers, a film which exhibits a hysteretic SQUID or VSM loop at 300 K and phase purity with only the host semiconductor detected by XRD are often claimed to be true ferromagnetic DMSs. Many of these papers are flawed because the criteria for a well-defined DMS are much more extensive. These include: (i) a random dopant distribution, (ii) a well-known and preferably unique charge state and preferentially a unique local structural environment for the dopant, (iii) a demonstrated coupling of the dopant spin to the host band structure, leading to spin polarization of the majority carriers, and (iv) a rational dependence of the saturation magnetization and Curie point on the magnetic dopant and carrier concentrations. Implicit in this list is that trivial causes of ferromagnetism, such as magnetic contamination and magnetic secondary phase formation, are eliminated. Yet, in many papers, the authors have not carried out the necessary control experiments and materials c

Chambers, Scott A.; Gallagher, Bryan

2008-05-01

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