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1

DIABETES MELLITUS COMO FACTOR DE RIESGO DE DEMENCIA EN LA POBLACI?N ADULTA MAYOR MEXICANA  

PubMed Central

Introduccion La diabetes mellitus y las demencias constituyen dos problemas crecientes de salud entre la población adulta mayor del mundo y en particular de los paises en desarrollo. Hacen falta estudios longitudinales sobre el papel de la diabetes como factor de riesgo para demencia. Objetivo Determinar el riesgo de demencia en sujetos Mexicanos con diabetes mellitus tipo 2. Materiales y Metodos Los sujetos diabéticos libres de demencia pertenecientes al Estudio Nacional de Salud y Envejecimiento en México fueron evaluados a los dos años de la línea de base. Se estudió el papel de los factores sociodemográficos, de otras comorbilidades y del tipo de tratamiento en la conversión a demencia. Resultados Durante la línea de base 749 sujetos (13.8%) tuvieron diabetes. El riesgo de desarrollar demencia en estos individuos fue el doble (RR, 2.08 IC 95%, 1.59–2.73). Se encontró un riesgo mayor en individuos de 80 años y más (RR 2.44 IC 95%, 1.46–4.08), en los hombres (RR, 2.25 IC 95%, 1.46–3.49) y en sujetos con nivel educativo menor de 7 años. El estar bajo tratamiento con insulina incrementó el riesgo de demencia (RR, 2.83, IC 95%, 1.58–5.06). Las otras comorbilidades que aumentaron el riesgo de demencia en los pacientes diabéticos fueron la hipertensión (RR, 2.75, IC 95%, 1.86–4.06) y la depresión (RR, 3.78, 95% IC 2.37–6.04). Conclusión Los sujetos con diabetes mellitus tienen un riesgo mayor de desarrollar demencia, La baja escolaridad y otras comorbilidades altamente prevalentes en la población Mexicana contribuyen a la asociación diabetes-demencia. PMID:21948010

Silvia, Mejia-Arango; Clemente, y Zuniga-Gil

2012-01-01

2

EJERCICIO Y LA DETECCION DEL MAL AGUDO DE MONTA?A GRAVE  

PubMed Central

El Mal Agudo de Montaña (MAM) es un conjunto de síntomas inespecíficos padecidos por sujetos que ascienden rápidamente desde baja a alta altura sin adecuada aclimatación. Usualmente es autolimitado, pero las formas graves (edema pulmonar y cerebral) pueden causar la muerte. La hipoxemia exagerada en reposo está relacionada con el desarrollo de MAM pero su valor predictivo es limitado. Dado que el ejercicio en altura se acompaña de mayor hipoxemia y síntomas, postulamos el valor predictivo de un simple test de ejercicio para pronosticar MAM grave. Se estudió el valor predictivo de la saturación de oxígeno en reposo y ejercicio submáximo a 2 700m y 4 300m en 63 sujetos que ascendían al cerro Aconcagua (6 962m). Se consideró desaturación de oxígeno con ejercicio a una disminución >=5% respecto al reposo. Se utilizó la escala de Lake-Louise para establecer la presencia de MAM grave. 6 sujetos presentaron MAM grave (9.5%) y requirieron evacuación. La saturación de oxígeno en reposo a 2 700m no fue significativa para clasificar sujetos que luego desarrollaron MAM grave. Por el contrario, la asociación de desaturación durante el ejercicio a 2 700m más la saturación inapropiada en reposo a 4 300m fue significativa para clasificar a los sujetos que desarrollaron MAM grave con un valor predictivo positivo de 80% y un valor predictivo negativo del 97%. Nuestros resultados son relevantes para el montañismo y sugieren la adición de un simple test de ejercicio en la predicción del MAM grave. PMID:20228017

Garofoli, Adrian; Montoya, Paola; Elias, Carlos; Benzo, Roberto

2012-01-01

3

Factoring  

NSDL National Science Digital Library

Test your factoring skills Factors and Multiples Jeopardy How much do you know about factoring and multiples? Play Jeopardy and find out! Prime Factoring Turkey Shoot Blast these turkeys using your factoring skills. Help the Professor Super save the planet by "cooking" the Giant Frozen Turkeys of Destruction. Math Lines 12 X-Factor Shoot the ball at the other factors to get a product of 12. You can also ...

Clark, Mr

2012-10-31

4

Informação e campanhas de esclarecimento como fatores de sucesso no abandono do tabagismo Information and awareness campaigns as success factors in smoking cessation  

Microsoft Academic Search

Introduction: increase the amount of smokers that decide to quit smoking has been a challenge to health care professionals. The aim of this study is to investigate the roles of information concerning the harmful effects of smoking and the awareness campaigns as success factors in smoking cessation. Methodology: qualitative study in which ten individuals that stopped smoking for over six

Isabel Cristina Echer; Sergio Menna Barreto; José Roberto Goldim; Maria Lucia Tiellet Nunes

2005-01-01

5

Como Lo Hago Yo: Myelomeningocele  

PubMed Central

Fortificación con ádico fólico es efectiva, pero aún falta conciencia en los jóvenes. La legalidad del aborto aumenta la importancia de la consulta prenatal. Realizo la cirugía bajo microcoscopio por razones didácticas. Irrigación continua para reducir la temperatura del tejido. Trato a la plaqueta como tejido viable. No suturo la plaqueta. No cierro músculo. ATB por una semana después de cirugía. Hidrocefalia: Válvula en todos los casos de ventriculomegalia. Médula anclada: Desanclar una sola vez. Chiari II: Revisar la válvula. Incluir en el seguimiento rendimiento escolar, puede indicar obstrucción de la válvula o médula anclada. PMID:24791217

Lazareff, Jorge

2014-01-01

6

Informe Especial Supremaca de Concreto Como  

E-print Network

Informe Especial Mayo 2013 Supremacía de Concreto Como Material Estructural Paulo Helene #12;Supremacía de Concreto como Material Estructural* Paulo Helene Prof. Titular da Universidade de São Paulo Asamblea General de la FICEM. 2012. #12;3 supremacía del concreto Por Prof. Paulo Helene * Conferencia

Paraná, Universidade Federal do

7

Factor Trees  

NSDL National Science Digital Library

This virtual manipulative allows students to find the prime factorization of numbers by completing factor trees. Then they may use a venn diagram to sort the prime factors to find the greatest common factor and the least common multiple.

Playground, Math

2009-07-29

8

Factor Trees  

NSDL National Science Digital Library

In this online activity, the learner finds the prime factorization of composite numbers by building factor trees. A second level includes finding the greatest common factor and the least common multiple by sorting factors using a Venn Diagram.

2010-01-01

9

Factoring with the Factor Tree  

NSDL National Science Digital Library

This Java applet presents a composite number, and prompts you to factor it -- one step at a time. Enter one factor, prime or another composite; the applet calculates the remaining factor, and branches two boxes below any composite factor so that you may proceed factoring until you obtain the full factorization into primes, which the applet colors in green. Click the "Repeat problem" button to see that different factor trees for a given number still result in the same prime factorization.

Interactive Math Miscellany And Puzzles, Alexander B.

2011-01-01

10

Factor Game  

NSDL National Science Digital Library

The Factor Game engages students in a contest in which winning strategies involve distinguishing between numbers with many factors and numbers with few factors. Students are then guided through an analysis of game strategies and introduced to the definitions of prime and composite numbers.

Mathematics, National C.

2009-07-22

11

Factor Findings  

NSDL National Science Digital Library

In this lesson, students first create factor posters for a variety of different numbers that will be displayed in the classroom to be utilized as a resource throughout the school year. They make discoveries about factors using color tiles, represent their discoveries using graph paper, and display their information on poster board as find factors of an assigned number. The plan includes a list of materials, questions, assessment options, and extensions.

Piecora, Jamie

2000-01-01

12

(SWNTs) CVD [1][2] Co/Mo  

E-print Network

( ) ( ) ( ) * ( ) 1. (SWNTs) CVD 1-2 nm CVD 2 CoMo CO [1][2] Co/Mo [3]CoMo CVD SWNTs CVD 2. 15mm 0.5 mm 2 mm 3.6 mm Mo(0.019-1.9nm) Co(0.034-2.1nm) Cold-wall CVD H2: 100 sccm, Ar: 300 sccm 50 Torr 10 min H2 Ar 30 Torr SWNTs (: 488nm) 3. CVD SWNTs 1 CVD 700 900

Maruyama, Shigeo

13

Quality factors  

SciTech Connect

The quality factor, Q, is a dimensionless modifier used in converting absorbed dose, expressed in rads (or grays), to dose equivalent, expressed in rems (or seiverts). The dose equivalent is used in radiation protection to account for the biological effectiveness of different kinds of radiation. The quality factor is related to both the linear energy transfer (LET) and relative biological effectiveness (RBE). The RBE's obtained from biological experiments depend in a complex way on the observed biological effect, the specific test organism, and the experimental conditions. Judgement is involved, therefore, in the choice of the quality factor. Questions regarding the adequacy of current Q values for neutrons were raised first in a 1980 statement by the National Council on Radiation Protection (NCRP) and later in a 1985 statement by the International Commission on Radiological Protection (ICRP). In 1980, the NCRP alerted the technical community to possible future increases between a factor of three and ten in the Q for neutrons, and in 1985, the ICRP suggested an increase by a factor of two in Q for neutrons. Both the ICRP and NRCP are now recommending essentially the same guidance with regard to Q for neutrons: an increase by a factor of two. The Q for neutrons is based on a large, albeit unfocused, body of experimental data. In spite of the lack of focus, the data supporting a change in the neutron quality factor are substantial. However, the proposed doubling of Q for neutrons is clouded by other issues regarding its application. 33 refs., 4 figs., 6 tabs.

Kerr, G.D.

1986-01-01

14

Power Factor  

NSDL National Science Digital Library

All About Circuits is a website that âÂÂprovides a series of online textbooks covering electricity and electronics.â Written by Tony R. Kuphaldt, the textbooks available here are wonderful resources for students, teachers, and anyone who is interested in learning more about electronics. This specific section, Power Factor, is the eleventh chapter in Volume II âÂÂAlternating Current. A few of the topics covered in this chapter include: True, Reactive, and Apparent power; Calculating power factor, and Practical power factor correction. Diagrams and detailed descriptions of concepts are included throughout the chapter to provide users with a comprehensive lesson. Visitors to the site are also encouraged to discuss concepts and topics using the All About Circuits discussion forums (registration with the site is required to post materials).

Kuphaldt, Tony R.

2008-07-10

15

15. Como gatehouse (outlet tower) and access bridge, looking west ...  

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

15. Como gatehouse (outlet tower) and access bridge, looking west from dam crest (Trash rack visible in reservoir pool behind and right of tower) - Bitter Root Irrigation Project, Como Dam, West of U.S. Highway 93, Darby, Ravalli County, MT

16

Scale Factor  

NSDL National Science Digital Library

It seems commonsense that when the dimensions of an object are doubled, the area is doubled as well. You can use this applet to investigate this misconception. Students can see how changes in the scale factor influence the ratio of perimeters and the ratio of areas between two figures.

Illuminations, Nctm

2000-01-01

17

CONFLICTO Y FINANZAS PÚBLICAS MUNICIPALES EN COLOMBIA  

Microsoft Academic Search

Se identifican los factores que influyen sobre la presencia de actores armados en los municipios y la manera como las finanzas públicas afectan tal presencia. Los ejercicios estadísticos muestran tres tipos de resultados. Unos que tienden a corroborar hipótesis corrientemente aceptadas en el país, otros que desafían ciertas creencias y por último algunas asociaciones curiosas. Dentro de los primeros, se

Mauricio Rubio

2002-01-01

18

CÁNCER DE PRÓSTATA Y EJERCICIO FÍSICO  

Microsoft Academic Search

The American College of Sports Medicine recommends aerobic exercise combined with a complete muscular workout in a healthy psychosocial environment. This general pres- cription can be applied to cancer patients. This program offers a physical exercise guide of strength and endurance adapted to pros- tate cancer patients. The program considers the characteristics and contraindications of strength building exercise allowing for

Bernat-Carles Serdà

2006-01-01

19

LA BIO?TICA COMO QUEHACER FILOS?FICO  

PubMed Central

El artículo examina el estatuto epistemológico de la bioética como disciplina académica. El autor sostiene que el estatuto epistemológico de un discurso lo determina la pregunta fundamental que se plantea y la respuesta que se busca, focos integradores del discurso. En el caso de la bioética, la pregunta fundamental es de índole moral. La bioética es pues una disciplina ética que tiene su hogar epistemológico en la filosofía. El autor también defiende el concepto de “éticas aplicadas”. Sugiere finalmente que el método de la bioética, sobre todo la que se hace desde nuestras latitudes, debería adoptar el círculo hermenéutico como metodología para su filosofar. PMID:20463860

Ferrer, Jorge Jose

2009-01-01

20

Lecture Notes, Como 1995 September 6, 1998 Quantum Theory  

E-print Network

Lecture Notes, Como 1995 September 6, 1998 Quantum Theory HANS DE RAEDT Institute for Theoretical. Let us try to reduce the quantum problem to a "classical mechanics problem". According to the rules, The Netherlands E-mail: deraedt@phys.rug.nl ABSTRACT The purpose of this set of lectures is to introduce

21

EJERCICIOS PARA ENTREGAR 4. TEMA I Hay que entregar todos los ejercicios.  

E-print Network

definibles en B con par´ametros en A. Es decir, si A y B son L-estructuras tales que A B y (x1, . . . , xn ejemplos de estructuras y f´ormulas tales que A B y (A) = (B) An , uno con (A) (B) y otro con (A) (B "x X estructura y {X :

Otero Domínguez, Margarita

22

comoR: a software for disease comorbidity risk assessment  

PubMed Central

Background The diagnosis of comorbidities, which refers to the coexistence of different acute and chronic diseases, is difficult due to the modern extreme specialisation of physicians. We envisage that a software dedicated to comorbidity diagnosis could result in an effective aid to the health practice. Results We have developed an R software comoR to compute novel estimators of the disease comorbidity associations. Starting from an initial diagnosis, genetic and clinical data of a patient the software identifies the risk of disease comorbidity. Then it provides a pipeline with different causal inference packages (e.g. pcalg, qtlnet etc) to predict the causal relationship of diseases. It also provides a pipeline with network regression and survival analysis tools (e.g. Net-Cox, rbsurv etc) to predict more accurate survival probability of patients. The input of this software is the initial diagnosis for a patient and the output provides evidences of disease comorbidity mapping. Conclusions The functions of the comoR offer flexibility for diagnostic applications to predict disease comorbidities, and can be easily integrated to high–throughput and clinical data analysis pipelines. PMID:25045465

2014-01-01

23

Learning with matrix factorizations  

E-print Network

Matrices that can be factored into a product of two simpler matrices can serve as a useful and often natural model in the analysis of tabulated or high-dimensional data. Models based on matrix factorization (Factor Analysis, ...

Srebro, Nathan, 1974-

2004-01-01

24

Factor VII deficiency  

MedlinePLUS

You can control bleeding episodes by receiving normal plasma, concentrates of factor VII, or genetically produced (recombinant) factor VII through a vein (intravenous). You will need frequent treatment during bleeding episodes because factor VII does not ...

25

Sparse matrix inverse factors  

SciTech Connect

The inverses of matrix factors lend themselves to parallel operations in the direct solution phase of sparse matrix solutions. These inverse factors, given suitable ordering of the equations, are themselves sparse, if less so than the original factors. Partitioning reduces the build-up of nonzero elements in the inverse factors. All of the multiplications required for repeat solutions may be performed in parallel using the inverse factors, with only as many serial steps as twice the number of factors.

Enns, M.K. (Electrocon International, Inc., Ann Arbor, MI (USA)); Tinney, W.F.; Alvarado, F.L. (Wisconsin Univ., Madison, WI (USA))

1990-05-01

26

Factor X deficiency  

MedlinePLUS

Factor X (ten) deficiency is a disorder caused by too little of a protein called factor X in the blood. It leads to problems with ... more of these clotting factors are missing. Factor X deficiency is often caused by a defect in ...

27

[Tissue factor pathway inhibitors].  

PubMed

Activation of the extrinsic pathway of blood coagulation plays the key role in the process of blood coagulation. The hemostasis is influenced by the activity of procoagulant factors and its inhibitors. In this work we summarize existing data on tissue factor pathway inhibitors: TFPI and TFPI-2. Despite structural similarity between them, they exhibit many differences in synthesis, distribution and mechanism of action. TFPI inhibits the activity of factor Xa and the complex of tissue factor and factor VIIa (TF/VIIa). Conversely, TFPI-2 does not inhibits factor Xa, but it is a strong inhibitor of factor XIa, plasma kallikrein, plasmin and trypsin. PMID:12362512

Sierko, Ewa; Zawadzki, Roman J; Wojtukiewicz, Marek Z

2002-07-01

28

Consejos prácticos para el ajuste del tratamient o insulínico en el ejercicio físico Prac tic al recommend ations for adjustments in insulin the rapy in relation to p hysi cal exe rcise  

Microsoft Academic Search

The same beneficial effects of physical activity reported for the gen- eral population can be extended to diabetic subjects. In addition, it can improve many other factors related to diabetes. Nevertheless, i n type 1 and in insulinopenic type 2 diabetic patients, exercise doe s not improve glycemic control because it is usually associated wit h large excursions in blood

G. Carreras; A. Pérez

2007-01-01

29

Efetividade da reabilitação pulmonar como tratamento coadjuvante da doença pulmonar obstrutiva crônica  

Microsoft Academic Search

3 Introdução: O paciente portador de DPOC diminui sua atividade física global devido a piora progressiva da função pulmonar como conseqüência de qualquer forma de esforço físico por ele realizado. A reabilitação pulmonar (RP) é utilizada nos EUA e Europa como alternativa terapêutica no tratamento da DPOC. Objetivo: Avaliar a efetividade do programa de RP como tratamento coadjuvante da DPOC.

SÉRGIO LEITE RODRIGUES; CARLOS ALBERTO DE ASSIS VIEGAS; TEREZINHA LIMA

2002-01-01

30

IDENTIDAD DE LA ESCUELA PRIMARIA RURAL COMO CENTRO CULTURAL DE LA COMUNIDAD  

Microsoft Academic Search

En el presente artículo la autora expone como la ciencia y la cultura influye en la identidad rural de la escuela como centro cultural de la comunidad y reconocen el roll de la escuela primaria rural como institución cultural, contribuyendo a una cultura general integral, con la participación de la familia y la comunidad. Se exponen criterios sobre la formación

María Rosa Núñez González

2012-01-01

31

Factor V deficiency  

MedlinePLUS

... the cause is unknown. The disease is similar to hemophilia , except bleeding into joints is less common. In the inherited form of Factor V deficiency, a family history of a bleeding disorder is a risk factor.

32

Factoring Polynomials and Fibonacci.  

ERIC Educational Resources Information Center

Discusses the factoring of polynomials and Fibonacci numbers, offering several challenges teachers can give students. For example, they can give students a polynomial containing large numbers and challenge them to factor it. (JN)

Schwartzman, Steven

1986-01-01

33

Factor II deficiency  

MedlinePLUS

Factor II deficiency is a blood clotting (coagulation) problem that occurs when there is a lack of a substance ... enough an important blood clotting protein called factor II. The condition runs in families (inherited) and is ...

34

Power Factor Improvement  

E-print Network

Industrial Energy Management Program to explain power factor are described. POWER FACTOR RJNDAMENTALS The current required by induction motors, transformers, fluorescent lights, induction heating furnaces, resistance welders, etc., can be considered... industries almost everyday. Low or "poor" power factor is caused by the use of inductive (magnetic) devices. These include non-power factor corrected fluorescent and high-intensity discharge lighting fixture ballasts, arc welders, solenoid, induction...

Viljoen, T. A.

1979-01-01

35

Human factors in mining  

SciTech Connect

This Bureau of Mines report is directed toward summarizing the application of human factors to improving safety, productivity, and the general physical and psychological working conditions of miners and toward familiarizing readers with the role of human factors in the mining industry and the benefits that car accrue by systematically applying human factors principles and data.

Sanders, M.S.; Peay, J.M.

1988-01-01

36

Existentially Definable Factor Congruences  

E-print Network

A variety V has definable factor congruences if and only if factor congruences can be defined by a first-order formula Phi having central elements as parameters. We prove that if Phi can be chosen to be existential, factor congruences in every algebra of V are compact.

Terraf, Pedro Sánchez

2009-01-01

37

Lymphocytopoietic factor in lymph.  

PubMed

The evidences which suggest the presence of a lymphocytopietic factor in rat thoracic duct lymph are summarized briefly. The intravenous injections of the extracted materials from lymph plamsa into syngeneic recipient rats resulted in the massive proliferation of lymphoid cells predominantly in the thymus dependent areas and thymic cortex, suggesting that the target cells for the factor are not marrow-derived (B) cells, but thymus derived (T) cells. The existence of a thymus is not necessarily required for the production or secretion of the factor. The augmenting effect of the factor on T cell functions, eg. local graft-versus-host rection and helper activity of plaque forming response to sheep erythrocytes, is mentioned. The physicochemical characteristics of the factor are nondialysable and heat-stable glyco-protein molecules. The roles of lymph humoral factor in T cell-differentiation or proliferation are discussed. PMID:312981

Yamashita, A; Fukumoto, T; Miyamoto, M

1979-03-01

38

Oxygen-driven competition between low-dimensional structures of Sr3CoMO6 and Sr3CoMO7-? with M = Ru, Ir.  

PubMed

We have realized a reversible structure transformation of one-dimensional 1D K4CdCl6-type Sr3CoMO6 with the Co(2+)/M(4+) cation ordering into the two-dimensional 2D double layered Ruddlesden-Popper structure Sr3CoMO7-? with a random distribution of Co and M (with M = Ru, Ir) upon increasing the partial oxygen pressure. The combined soft and hard X-ray absorption spectroscopy studies show that under transformation, Co and M cations were oxidized to Co(3+) and M(5+). During oxidation, high-spin Co(2+) in Sr3CoMO6 first transforms into high-spin Co(3+) in oxygen-deficient Sr3CoMO7-?, and then further transforms into low-spin Co(3+) in fully oxidized Sr3CoMO7 upon further increasing the partial pressure of oxygen. The 1D Sr3CoMO6 compound is magnetically ordered at low temperatures with the magnetic moments lying along the c-axis. Their alignment is parallel for Sr3CoRuO6 and antiparallel for Sr3CoIrO6. The 2D compounds reveal a spin-glass-like behavior related to the random distribution of magnetic cations in the structure. PMID:25111502

Mikhailova, Daria; Reichel, Phillip; Tsirlin, Alexander A; Abakumov, Artem M; Senyshyn, Anatoliy; Mogare, Kailash M; Schmidt, Marcus; Kuo, Chang-Yang; Pao, Chin-Wen; Pi, Tun-Wen; Lee, Jyh-Fu; Hu, Zhiwei; Tjeng, Liu Hao

2014-10-01

39

Factor IX assay  

MedlinePLUS

... related to: Congenital deficiency of factor IX (hemophilia B) Disseminated intravascular coagulation ( DIC ) Fat malabsorption Liver disease (such as cirrhosis ) Vitamin K deficiency Warfarin (Coumadin) use

40

The Heart of Factorization  

NASA Astrophysics Data System (ADS)

Factorization is at the heart of nearly any calculation in pertubative QCD. It follows from the universal behavior of gauge theories in soft and collinear limits. This talk gives a summary of recent progress on producing a more transparent understanding of factorization and connecting traditional approaches to those of Soft-Collinear Effective Theory. The main result is the formulation and proof, at tree-level, of a factorization formula in QCD. The proof exploits the many advantages of spinor helicity methods, but does not use any effective field theory tricks. Once the factorization formula is proven, the transition to an effective theory description is effortless.

Schwartz, Matthew D.

2014-01-01

41

Meson electromagnetic form factors  

E-print Network

The electromagnetic structure of the pseudoscalar meson nonet is completely described by the sophisticated Unitary&Analytic model, respecting all known theoretical properties of the corresponding form factors.

Stanislav Dubnicka; Anna Z. Dubnickova

2012-10-23

42

Exploratory Bi-Factor Analysis  

ERIC Educational Resources Information Center

Bi-factor analysis is a form of confirmatory factor analysis originally introduced by Holzinger. The bi-factor model has a general factor and a number of group factors. The purpose of this article is to introduce an exploratory form of bi-factor analysis. An advantage of using exploratory bi-factor analysis is that one need not provide a specific…

Jennrich, Robert I.; Bentler, Peter M.

2011-01-01

43

A model catalyst approach to the effects of the support on Co–Mo hydrodesulfurization catalysts  

Microsoft Academic Search

Co–Mo model sulfide catalysts, in which CoMoS phases are selectively formed, were prepared by means of a CVD technique using Co(CO)3NO as a precursor of Co. It is shown by means of XPS, FTIR and NO adsorption that CoMoS phases form selectively when the Mo content exceeds monolayer loading. A single exposure of MoS2\\/Al2O3 to a vapor of Co(CO)3NO at

Yasuaki Okamoto; Takeshi Kubota

2003-01-01

44

Lithiasis and Risk Factors  

Microsoft Academic Search

Nephrolithiasis is a worldwide disease with high clinical and economic costs. The increasing incidence in industrialized countries seems to be related to several risk factors, which are partly inherited and partly acquired. Although risk factors in urolithiasis are still under discussion, their identification would provide a notable gain for the patient in terms of stone episodes, and for the health

P. Ferrari; R. Piazza; N. Ghidini; M. Bisi; G. Galizia; G. Ferrari

2007-01-01

45

Factors to Facets  

Microsoft Academic Search

Extending our previous research on personality and prej- udice, we tested the predictive power of Big Five facet compared with factor scores in three studies. Study 1 (N 5 170) examined the predictive power of factors and facets when explaining generalized prejudice, a composite of four prejudice types. Study 2 (N 5 158) focused on sexism and Study 3 (N

Bo Ekehammar; Nazar Akrami

46

Exposure Factors Program  

EPA Science Inventory

The development of the latest version of the Exposure Factors Handbook (EFH): 2011 Edition (EPA/600/R-09/052F) has maintained the need for a more comprehensive program that addresses issues related to exposure factors. Since the first version of the EFH was r...

47

Vitiligo – Exogenous Factors  

Microsoft Academic Search

Vitiligo is an acquired depigmentary disorder of the skin that results from the selective destruction of melanocytes. The etiology of vitiligo is poorly understood. There appears to be a genetic predisposition, but additional factors are probably involved. The purpose of this article is to outline the factors that might play a role in the development of vitiligo. These include trauma

Hagit Matz; Ethel Tur

2004-01-01

48

Separating output factor into collimator factor and phantom scatter factor for megavoltage photon calculations  

Microsoft Academic Search

Output factor has been used in megavoltage dosage calculations because collimator factor and backscatter factor are considered individually indeterminable. Output factor reflects the normalized product of backscatter factor and collimator factor for the most common treatment geometry. A method has been found for independently measuring collimator factors for megavoltage photons. Using a build-up cap of high density tissue equivalent material,

J. Spicka; D. Herron; C. Orton

1988-01-01

49

Block LU factorization  

NASA Technical Reports Server (NTRS)

Many of the currently popular 'block algorithms' are scalar algorithms in which the operations have been grouped and reordered into matrix operations. One genuine block algorithm in practical use is block LU factorization, and this has recently been shown by Demmel and Higham to be unstable in general. It is shown here that block LU factorization is stable if A is block diagonally dominant by columns. Moreover, for a general matrix the level of instability in block LU factorization can be founded in terms of the condition number kappa(A) and the growth factor for Gaussian elimination without pivoting. A consequence is that block LU factorization is stable for a matrix A that is symmetric positive definite or point diagonally dominant by rows or columns as long as A is well-conditioned.

Demmel, James W.; Higham, Nicholas J.; Schreiber, Robert S.

1992-01-01

50

Perturbative QCD factorization of ?????  

NASA Astrophysics Data System (ADS)

In this paper, we firstly verify that the factorization hypothesis is valid for the exclusive process ????? at the next-to-leading order (NLO) with the collinear factorization approach, and then extend this proof to the case of the kT factorization approach. We particularly show that at the NLO level, the soft divergences in the full quark level calculation could be canceled completely as for the ????? process where only the pseudoscalar ? meson is involved, and the remaining collinear divergences can be absorbed into the NLO hadron wave functions. The full amplitudes can be factorized as the convolution of the NLO wave functions and the infrared-finite hard kernels with these factorization approaches. We also write out the NLO meson distribution amplitudes in the form of nonlocal matrix elements.

Cheng, Shan; Xiao, Zhen-Jun

2014-10-01

51

Factors augmenting allergic reactions.  

PubMed

Elicitors of anaphylactic reactions are any sources of protein with allergenic capacity. However, not all allergic reactions end up in the most severe form of anaphylaxis. Augmenting factors may explain why certain conditions lead to anaphylaxis. Augmenting factors may exhibit three effects: lowering the threshold, increasing the severity, and reversing acquired clinical tolerance. Common augmenting factors are physical exercise, menstruation, NSAIDs, alcohol, body temperature, acute infections, and antacids. Therapeutic options may address causative, preventive, pragmatic, or symptomatic considerations: avoid the eliciting food, take an antihistamine before any situation with a possible risk of augmentation, separate food and sport (at least for 2 h), and carry an adrenaline autoinjector at all times. Individual patterns include summation effects and specific patterns. In conclusion, in the case of a suggestive history but a negative oral challenge, one should consider the possible involvement of augmenting factors; after anaphylactic reactions, always ask for possible augmentation and other risk factors during the recent past; if augmentation is suspected, oral food challenges should be performed in combination with augmenting factors; and in the future, standardized challenge protocols including augmenting factors should be established. PMID:25306896

Niggemann, B; Beyer, K

2014-12-01

52

LA CULTURA COMO INVERSIÓN TURÍSTICA. UNA REFLEXIÓN A PROPÓSITO DEL GUGGENHEIM BILBAO  

Microsoft Academic Search

El turismo, objeto de diversas disciplinas, es uno de los sectores más relevantes de la economía mundial, siendo en España la primera industria nacional. En los último años el turismo cultural se ha revelado como un motor esencial de desarrollo para bastantes territorios. Un caso sobresaliente es el conocido como «efecto Guggenheim» que desde su creación en 1997 se ha

Ainhoa Aguirregoitia Martínez

2011-01-01

53

Quercus 201 Noviembre 2002 / 39 agua como las copas de los  

E-print Network

S Quercus 201 Noviembre 2002 / 39 agua como las copas de los bosques tropicales, caso de algunos géneros de driópi- dos. Otras han ocupado las aguas freáticas o intersticia- les y muestran todas las mediterránea, y otros ambientes, como las aguas continentales, también pueden ser extraordinariamente ricos (1

Murcia, Universidad de

54

Factorizations in finite groups  

SciTech Connect

A necessary condition for uniqueness of factorizations of elements of a finite group G with factors belonging to a union of some conjugacy classes of G is given. This condition is sufficient if the number of factors belonging to each conjugacy class is big enough. The result is applied to the problem on the number of irreducible components of the Hurwitz space of degree d marked coverings of P{sup 1} with given Galois group G and fixed collection of local monodromies. Bibliography: 9 titles.

Kulikov, Viktor S [Steklov Mathematical Institute, Russian Academy of Sciences, Moscow (Russian Federation)] [Steklov Mathematical Institute, Russian Academy of Sciences, Moscow (Russian Federation)

2013-02-28

55

Rheumatoid Factors: Clinical Applications  

PubMed Central

Rheumatoid factors are antibodies directed against the Fc region of immunoglobulin G. First detected in patients with rheumatoid arthritis 70 years ago, they can also be found in patients with other autoimmune and nonautoimmune conditions, as well as in healthy subjects. Rheumatoid factors form part of the workup for the differential diagnosis of arthropathies. In clinical practice, it is recommended to measure anti-cyclic citrullinated peptide antibodies and rheumatoid factors together because anti-cyclic citrullinated peptide antibodies alone are only moderately sensitive, and the combination of the two markers improves diagnostic accuracy, especially in the case of early rheumatoid arthritis. Furthermore, different rheumatoid factor isotypes alone or in combination can be helpful when managing rheumatoid arthritis patients, from the time of diagnosis until deciding on the choice of therapeutic strategy. PMID:24324289

Castelli, Roberto

2013-01-01

56

Aerospace Human Factors  

NASA Technical Reports Server (NTRS)

The following contains the final report on the activities related to the Cooperative Agreement between the human factors research group at NASA Ames Research Center and the Psychology Department at San Jose State University. The participating NASA Ames division has been, as the organization has changed, the Aerospace Human Factors Research Division (ASHFRD and Code FL), the Flight Management and Human Factors Research Division (Code AF), and the Human Factors Research and Technology Division (Code IH). The inclusive dates for the report are November 1, 1984 to January 31, 1999. Throughout the years, approximately 170 persons worked on the cooperative agreements in one capacity or another. The Cooperative Agreement provided for research personnel to collaborate with senior scientists in ongoing NASA ARC research. Finally, many post-MA/MS and post-doctoral personnel contributed to the projects. It is worth noting that 10 former cooperative agreement personnel were hired into civil service positions directly from the agreements.

Jordan, Kevin

1999-01-01

57

Internal velocity factors  

NASA Technical Reports Server (NTRS)

Computer program analyzes the entries and planetary trajectories of space vehicles. It obtains the equivalence of altitude and flight path angle, respectively, to acceleration load factor with respect to velocity for a given inertial velocity.

Cathcart, J. R.; Frank, A. J.; Massaglia, J. L.

1968-01-01

58

New microbial growth factor  

NASA Technical Reports Server (NTRS)

A screening procedure was used to isolate from soil a Penicillium sp., two bacterial isolates, and a Streptomyces sp. that produced a previously unknown microbial growth factor. This factor was an absolute growth requirement for three soil bacteria. The Penicillium sp. and one of the bacteria requiring the factor, an Arthrobacter sp., were selected for more extensive study concerning the production and characteristics of the growth factor. It did not seem to be related to the siderochromes. It was not present in soil extract, rumen fluid, or any other medium component tested. It appears to be a glycoprotein of high molecular weight and has high specific activity. When added to the diets for a meadow-vole mammalian test system, it caused an increased consumption of diet without a concurrent increase in rate of weight gain.

Bok, S. H.; Casida, L. E., Jr.

1977-01-01

59

New microbial growth factor.  

PubMed Central

A screening procedure was used to isolate from soil a Penicillium sp., two bacterial isolates, and a Streptomyces sp. that produced a new microbial growth factor. This factor was an absolute growth requirement for three soil bacteria. The Penicillium sp. and one of the bacteria requiring the factor, an Arthrobacter sp., were selected for more extensive study concerning the production and characteristics of the growth factor. It did not seem to be related to the siderochromes. It was not present in soil extract, rumen fluid, or any other medium component tested. It appears to be a glycoprotein of high molecular weight, and it has high specific activity. When added to the diets for a meadow vole mammalian test system, it caused an increased consumption of diet without a concurrent increase in rate of weight gain. PMID:327929

Bok, S H; Casida, L E

1977-01-01

60

Limiting Factors in Ecosystems  

NSDL National Science Digital Library

This unit, designed to span two class periods, helps students understand that physical factors, particularly temperature and precipitation, limit the growth of plant ecosystems. The activity begins with a discussion in which students develop their own ideas about the role of temperature, precipitation, and environment on plant growth. They will then examine X-Y graphs of vegetation growth, temperature, and precipitation versus month for four diverse ecosystems to determine which climatic factor is limiting growth. A worksheet and scoring rubric are provided.

61

FGF growth factor analogs  

DOEpatents

The present invention provides a fibroblast growth factor heparin-binding analog of the formula: ##STR00001## where R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, X, Y and Z are as defined, pharmaceutical compositions, coating compositions and medical devices including the fibroblast growth factor heparin-binding analog of the foregoing formula, and methods and uses thereof.

Zamora, Paul O. (Gaithersburg, MD); Pena, Louis A. (Poquott, NY); Lin, Xinhua (Plainview, NY); Takahashi, Kazuyuki (Germantown, MD)

2012-07-24

62

The von Willebrand factor  

Microsoft Academic Search

Summary  Von Willebrand factor (vWf) is a multimeric and multivalent adhesive protein which is essential for platelet adhesion to subendothelium\\u000a and for stabilization of factor VIII procoagulant activity in circulation. The quantitative measurement of vWf involves essentially\\u000a two different approaches. The first is based on the interaction between vWf and Gp Ib of the platelet membrane in presence\\u000a of ristocetin (ristocetin

Francesco Rodeghiero; Giancarlo Castaman

1990-01-01

63

Health factors in colostrum  

Microsoft Academic Search

Colostrum is a breast milk produced after the birth of the newborn and lasts for 2–4 days. Colostrum is very important part\\u000a of breast milk and lays down the immune system and confers growth factors and other protective factors for the young ones\\u000a in mammals. This is the source of passive immunity achieved by the mother and is transferred to

B. R. Thapa

2005-01-01

64

[Environmental factors of longevity].  

PubMed

A PROBABLE ROLE: The great increase in life expectancy over the past decades and too short a time lapse for any major genetic mutations to intervene, are arguments in favour of the intervention of environmental factors in longevity. A FAIRLY LONG LIST: Various environmental factors can be envisaged: prenatal environment, pollution, radiation and oncogenic agents, notably tobacco, food (quantitatively and qualitatively), medicinal products, stress, education and socio-professional life style, isolation, number of children and sexual activity, sports and exercising, etc. It is highly likely that all these factors, or at least some of them, have a real effect on longevity, although this is difficult to demonstrate directly. A COMBINED EFFECT: The basic idea of this paper is that these environmental factors should be seen as agents, the effects of which would be combined with those of genetic factors, considered as agents of radically different nature. We suggest that, in order to have any real effect, these environmental factors have to work on the same cell mechanisms as those that affect the genetic process, notably the mechanisms related to oxidative stress and genetic expression. PMID:12712686

Christen, Yves

2003-03-01

65

Factor Loading Estimation Error and Stability Using Exploratory Factor Analysis  

ERIC Educational Resources Information Center

Exploratory factor analysis (EFA) is commonly employed to evaluate the factor structure of measures with dichotomously scored items. Generally, only the estimated factor loadings are provided with no reference to significance tests, confidence intervals, and/or estimated factor loading standard errors. This simulation study assessed factor loading…

Sass, Daniel A.

2010-01-01

66

Risk factors for dementia.  

PubMed

Dementia is a complex human disease. The incidence of dementia among the elderly population is rising rapidly worldwide. In the United States, Alzheimer's disease (AD) is the leading type of dementia and was the fifth and eighth leading cause of death in women and men aged > or = 65 years, respectively, in 2003. In Taiwan and many other counties, dementia is a hidden health issue because of its underestimation in the elderly population. In Western countries, the prevalence of AD increases from 1-3% among people aged 60-64 years to 35% among those aged > 85 years. In Taiwan, the prevalence of dementia for people aged > or = 65 years was 2-4% by 2000. Therefore, it is important to identify protective and risk factors for dementia to prevent this disease at an early stage. Several factors are related to dementia, e.g. age, ethnicity, sex, genetic factors, physical activity, smoking, drug use, education level, alcohol consumption, body mass index, comorbidity, and environmental factors. In this review, we focus on studies that have evaluated the association between these factors and the risk of dementia, especially AD and vascular dementia. We also suggest future research directions for researchers in dementia-related fields. PMID:19864195

Chen, Jen-Hau; Lin, Kun-Pei; Chen, Yen-Ching

2009-10-01

67

Psychological Factors in Asthma  

PubMed Central

Asthma has long been considered a condition in which psychological factors have a role. As in many illnesses, psychological variables may affect outcome in asthma via their effects on treatment adherence and symptom reporting. Emerging evidence suggests that the relation between asthma and psychological factors may be more complex than that, however. Central cognitive processes may influence not only the interpretation of asthma symptoms but also the manifestation of measurable changes in immune and physiologic markers of asthma. Furthermore, asthma and major depressive disorder share several risk factors and have similar patterns of dysregulation in key biologic systems, including the neuroendocrine stress response, cytokines, and neuropeptides. Despite the evidence that depression is common in people with asthma and exerts a negative impact on outcome, few treatment studies have examined whether improving symptoms of depression do, in fact, result in better control of asthma symptoms or improved quality of life in patients with asthma. PMID:20525122

2008-01-01

68

DSN human factors project  

NASA Technical Reports Server (NTRS)

The project plan was to hold focus groups to identify the factors influencing the ease of use characteristics of software and to bond the problem. A questionnaire survey was conducted to evaluate those factors which were more appropriately measured with that method. The performance oriented factors were analyzed and relationships hypothesized. The hypotheses were put to test in the experimental phase of the project. In summary, the initial analysis indicates that there is an initial performance effect favoring computer controlled dialogue but the advantage fades fast as operators become experienced. The user documentation style is seen to have a significant effect on performance. The menu and prompt command formats are preferred by inexperienced operators. The short form mnemonic is least favored. There is no clear best command format but the short form mnemonic is clearly the worst.

Chafin, R. L.; Martin, T. H.

1980-01-01

69

Factor D Enzyme  

NASA Technical Reports Server (NTRS)

The trauma caused by the open heart surgery often triggers massive inflammation because the immune system overreacts. Factor D, the protein which plays a key role in the biological steps that activate this immune response prevents the imune system from inappropriately rurning out of control, allowing the patient to recover more rapidly. Factor D blockers, with their great potential to alleviate the complication of inflammation associated with heart surgery, are now being developed for clinical trials. These new drugs, developed from space research, should be commercially available as soon as year 2001.

2004-01-01

70

The transcription factor encyclopedia.  

PubMed

Here we present the Transcription Factor Encyclopedia (TFe), a new web-based compendium of mini review articles on transcription factors (TFs) that is founded on the principles of open access and collaboration. Our consortium of over 100 researchers has collectively contributed over 130 mini review articles on pertinent human, mouse and rat TFs. Notable features of the TFe website include a high-quality PDF generator and web API for programmatic data retrieval. TFe aims to rapidly educate scientists about the TFs they encounter through the delivery of succinct summaries written and vetted by experts in the field. TFe is available at http://www.cisreg.ca/tfe. PMID:22458515

Yusuf, Dimas; Butland, Stefanie L; Swanson, Magdalena I; Bolotin, Eugene; Ticoll, Amy; Cheung, Warren A; Zhang, Xiao Yu Cindy; Dickman, Christopher T D; Fulton, Debra L; Lim, Jonathan S; Schnabl, Jake M; Ramos, Oscar H P; Vasseur-Cognet, Mireille; de Leeuw, Charles N; Simpson, Elizabeth M; Ryffel, Gerhart U; Lam, Eric W-F; Kist, Ralf; Wilson, Miranda S C; Marco-Ferreres, Raquel; Brosens, Jan J; Beccari, Leonardo L; Bovolenta, Paola; Benayoun, Bérénice A; Monteiro, Lara J; Schwenen, Helma D C; Grontved, Lars; Wederell, Elizabeth; Mandrup, Susanne; Veitia, Reiner A; Chakravarthy, Harini; Hoodless, Pamela A; Mancarelli, M Michela; Torbett, Bruce E; Banham, Alison H; Reddy, Sekhar P; Cullum, Rebecca L; Liedtke, Michaela; Tschan, Mario P; Vaz, Michelle; Rizzino, Angie; Zannini, Mariastella; Frietze, Seth; Farnham, Peggy J; Eijkelenboom, Astrid; Brown, Philip J; Laperrière, David; Leprince, Dominique; de Cristofaro, Tiziana; Prince, Kelly L; Putker, Marrit; del Peso, Luis; Camenisch, Gieri; Wenger, Roland H; Mikula, Michal; Rozendaal, Marieke; Mader, Sylvie; Ostrowski, Jerzy; Rhodes, Simon J; Van Rechem, Capucine; Boulay, Gaylor; Olechnowicz, Sam W Z; Breslin, Mary B; Lan, Michael S; Nanan, Kyster K; Wegner, Michael; Hou, Juan; Mullen, Rachel D; Colvin, Stephanie C; Noy, Peter John; Webb, Carol F; Witek, Matthew E; Ferrell, Scott; Daniel, Juliet M; Park, Jason; Waldman, Scott A; Peet, Daniel J; Taggart, Michael; Jayaraman, Padma-Sheela; Karrich, Julien J; Blom, Bianca; Vesuna, Farhad; O'Geen, Henriette; Sun, Yunfu; Gronostajski, Richard M; Woodcroft, Mark W; Hough, Margaret R; Chen, Edwin; Europe-Finner, G Nicholas; Karolczak-Bayatti, Magdalena; Bailey, Jarrod; Hankinson, Oliver; Raman, Venu; LeBrun, David P; Biswal, Shyam; Harvey, Christopher J; DeBruyne, Jason P; Hogenesch, John B; Hevner, Robert F; Héligon, Christophe; Luo, Xin M; Blank, Marissa Cathleen; Millen, Kathleen Joyce; Sharlin, David S; Forrest, Douglas; Dahlman-Wright, Karin; Zhao, Chunyan; Mishima, Yuriko; Sinha, Satrajit; Chakrabarti, Rumela; Portales-Casamar, Elodie; Sladek, Frances M; Bradley, Philip H; Wasserman, Wyeth W

2012-01-01

71

Metric Conversion Factors  

NSDL National Science Digital Library

Brought to the Web by Washington State Department of Transportation, the Metric Conversion Factors site contains a wealth of helpful physical science and engineering information. As you might guess, all sorts of conversion factors are presented, such as for area, force, hard conversions for construction materials, length, mass, pavement, pipe, plate, power, pressure or stress, reinforcing steel, sheet metal, sieve, symbols, temperature, volume, and several others. Although it's not an online conversion calculator, all of the pages are set up for efficient printing so that students can have the information with them while doing homework.

72

WRKY transcription factors  

PubMed Central

WRKY transcription factors are one of the largest families of transcriptional regulators found exclusively in plants. They have diverse biological functions in plant disease resistance, abiotic stress responses, nutrient deprivation, senescence, seed and trichome development, embryogenesis, as well as additional developmental and hormone-controlled processes. WRKYs can act as transcriptional activators or repressors, in various homo- and heterodimer combinations. Here we review recent progress on the function of WRKY transcription factors in Arabidopsis and other plant species such as rice, potato, and parsley, with a special focus on abiotic, developmental, and hormone-regulated processes. PMID:24492469

Bakshi, Madhunita; Oelmuller, Ralf

2014-01-01

73

Castração química como pena, tratamento médico ou experimento científico : considerações bioéticas.  

E-print Network

??Dissertação (mestrado)—Universidade de Brasília, Faculdade de Ciências da Saúde, Programa de Pós-Graduação em Bioética, 2014. A pedofilia é classificada como doença psiquiátrica e sua prática… (more)

Maia, Thais Meirelles de Sousa

2014-01-01

74

Uso de Anfibios como Indicadores del xito de la Restauracin de Ecosistemas 1  

E-print Network

y algunos vertebrados peque- ños y son presa de muchos otros animales (Fig. 1). Estas interacciones calidad de las áreas naturales existentes como de la abundancia y diversidad de plantas y animales nativos

Mazzotti, Frank

75

The Three Faith Factors.  

ERIC Educational Resources Information Center

Discusses whether religion can affect health and social welfare and what types of religious influences are most beneficial to the individual and society, identifying three separate but related faith factors: organic religion, programmatic religion, and ecological religion. Examines research on faith-based approaches to social and urban problems.…

DiIulio, John J., Jr.

2002-01-01

76

Factors Affecting Photosynthesis!  

E-print Network

Factors Affecting Photosynthesis! Temperature Eppley (1972) Light Sverdrup's Critical Depth-493, but the general concept is still valid! ! #12;PB opt & Temperature! #12;Photosynthesis & Temperature! Remember: in the laboratory, we can measure photosynthesis versus irradiance (PvsE) and calculate Ek, Pmax, and alpha

Kudela, Raphael M.

77

Factorization and Quarkonium Production  

SciTech Connect

It is possible to extend the formalism for high-pT heavy quarkonium factorization beyond leading power. This extension may be helpful in interpreting the relative roles of octet and singlet channels in the formalism of nonrelativistic QCD (NRQCD). It may enable us to understand the origin of the surprisingly large results for cross sections calculated in the color singlet sector of NRQCD.

Kang, Z.B.; Qiu, J.W.; Sterman, G.

2011-05-01

78

Assessment of Human Factors  

NASA Technical Reports Server (NTRS)

Human Factors Engineering, often referred to as Ergonomics, is a science that applies a detailed understanding of human characteristics, capabilities, and limitations to the design, evaluation, and operation of environments, tools, and systems for work and daily living. Human Factors is the investigation, design, and evaluation of equipment, techniques, procedures, facilities, and human interfaces, and encompasses all aspects of human activity from manual labor to mental processing and leisure time enjoyments. In spaceflight applications, human factors engineering seeks to: (1) ensure that a task can be accomplished, (2) maintain productivity during spaceflight, and (3) ensure the habitability of the pressurized living areas. DSO 904 served as a vehicle for the verification and elucidation of human factors principles and tools in the microgravity environment. Over six flights, twelve topics were investigated. This study documented the strengths and limitations of human operators in a complex, multifaceted, and unique environment. By focusing on the man-machine interface in space flight activities, it was determined which designs allow astronauts to be optimally productive during valuable and costly space flights. Among the most promising areas of inquiry were procedures, tools, habitat, environmental conditions, tasking, work load, flexibility, and individual control over work.

Mount, Frances; Foley, Tico

1999-01-01

79

Symmetric factorization Riccati equations  

E-print Network

Symmetric factorization Riccati equations and Bezoutians collaboration with I. Karelin and L. Lerer() - C(I - A)-1B is analytic over the whole complex plane, and · (A, B, C) is minimal. #12;Special case�-invariant subspace is of the form M� = Im X I , where X = X satisfies the algebraic Riccati equation XCCX + X(A - BC

80

A Formula for Factoring.  

ERIC Educational Resources Information Center

Suggests use of the quadratic formula to build understanding that connections between factors and solutions to equations work both ways. Making use of natural connections among concepts allows students to work more efficiently. Presents four sample problems showing the roots of equations. Messy quadratic equations with rational roots can be solved…

Roebuck, Kay I. Meeks

1997-01-01

81

Factors influencing vaccination uptake  

Microsoft Academic Search

Abstract Current Australian research on factors influencing vaccination was discussed at a workshop held at the Royal Alexandra Hospital for Children, Sydney, in March 1998, sponsored by the National Centre for Immunisation Research and Surveillance of Vaccine Preventable Diseases (NCIRS). The application of decision maki ng theory to vaccination behaviour, the expectations and experiences of mothers, and reasons why parents

Edited Jill M Forrest; Margaret A Burgess; Peter B Mcintyre

82

Factors Affecting Students' Performance  

Microsoft Academic Search

Determinants of students' performance have been the subject of ongoing debate among educators, academics, and policy makers. There have been many studies that sought to examine this issue and their findings point out to hard work, previous schooling, parents’ education, family income and self motivation as factors that have a significant effect on the students GPA. Most of those studies

Nasri Harb; Ahmed El-Shaarawi

2006-01-01

83

Computing nonnegative tensor factorizations  

E-print Network

Oct 19, 2006 ... Department of Computer Science Technical Report TR-2006-21. October 2006 ... (The better-known nonnegative matrix factorization is a special case of NTF and is also handled by ..... slightly different from what typically appears in the literature

2006-10-18

84

Probabilistic Matrix Factorization  

Microsoft Academic Search

Many existing approaches to collaborative filtering can nei ther handle very large datasets nor easily deal with users who have very few ratings. In this paper we present the Probabilistic Matrix Factorization (PMF) model which scales linearly with the number of observations and, more importantly, performs well on the large, sparse, and very imbalanced Netflix dataset. We furth er extend

Ruslan Salakhutdinov; Andriy Mnih

2007-01-01

85

Activating transcription factor 4.  

PubMed

Activating transcription factor 4 (ATF4) belongs to the ATF/CREB (activating transcription factor/cyclic AMP response element binding protein) family of basic region-leucine zipper (bZip) transcription factors, which have the consensus binding site cAMP responsive element (CRE). ATF4 has numerous dimerization partners. ATF4 is induced by stress signals including anoxia/hypoxia, endoplasmic reticulum stress, amino acid deprivation, and oxidative stress. ATF4 expression is regulated transcriptionally, translationally via the PERK pathway of eIF2alpha phosphorylation, and posttranslationally by phosphorylation, which targets ATF4 to proteasomal degradation. ATF4 regulates the expression of genes involved in oxidative stress, amino acid synthesis, differentiation, metastasis and angiogenesis. Transgenic studies have demonstrated ATF4 to be involved in hematopoiesis, lens and skeletal development, fertility, proliferation, differentiation, and long-term memory. ATF4 expression is upregulated in cancer. Since ATF4 is induced by tumour microenvironmental factors, and regulates processes relevant to cancer progression, it might serve as a potential therapeutic target in cancer. PMID:17466566

Ameri, Kurosh; Harris, Adrian L

2008-01-01

86

Projectile Motion (factoring quadratics)  

NSDL National Science Digital Library

Students use the internet to research values relevant to projectile motion such as acceleration due to gravity and the height of objects. Using the given information students will have to make unit conversions to ensure that all units are the same. They will then solve problems on projectile motion by factoring.

2010-01-01

87

Factors Affecting Photosynthesis!  

E-print Network

4/21/13 1 Factors Affecting Photosynthesis! Temperature Eppley (1972) Light Sverdrup transporters (nutrients) It slows down (curves) because the dark reactions can't process fast enough Light controlled by light and is linear Critical Depth! Given the previous assumptions, the Critical Depth (Zcr

Kudela, Raphael M.

88

Factorization with Uncertainty  

Microsoft Academic Search

Factorization using Singular Value Decomposition (SVD) is often used for recovering 3D shape and motion from feature correspondences across multiple views. SVD is powerful at finding the global solution to the associated least-square-error minimization problem. However, this is the correct error to minimize only when the x and y positional errors in the features are uncorrelated and identically distributed. But

P. Anandan; Michal Irani

2002-01-01

89

Affective Factors: Anxiety  

ERIC Educational Resources Information Center

Affective factors seem to play a crucial role in success or failure in second language acquisition. Negative attitudes can reduce learners' motivation and harm language learning, while positive attitudes can do the reverse. Discovering students' attitudes about language will help both teacher and student in teaching learning process. Anxiety is…

Tasnimi, Mahshad

2009-01-01

90

Reflexiones sobre el ejercicio de prospectiva ‘España 2020’  

Microsoft Academic Search

The foresight work paved the way for the publication «Spain 2020. Reflections and Foresights», carried out in groups in 2004-2005, is the motive for this article. In which, apart from an introduction into the foresight, the bulk of the work focused on the analysis of the most important questions of a social, political, economic and cultural kind which Spain faces,

José Miguel Echarri Porta

2011-01-01

91

Las universidades hacia el 2020: un ejercicio de prospectiva  

Microsoft Academic Search

stages are presented about the future of university, with an horizon of 10-15 years, elaborated by different international institutions. From this exercise of prospective, 4 fundamental types of universities are selected and some strategic questions are considered.

Antonio Pulido; San Román

92

Prescripción de ejercicio en el tratamiento de deshabituación del tabaco  

Microsoft Academic Search

Tobacco is one of the main causes of mortality in industrialized countries, yet there is no treatment that is wholly efficacious for helping smokers to quit the habit. Physical exercise is one of the low-cost nonpharmacologic strategies in rehabilitation therapies in several diseases and its practice offers a way of combating the harmful effects of smoking on health. Studies have

Carlos Ayán Pérez

2009-01-01

93

Factor VIII/von Willebrand factor has potent lectin activity.  

PubMed

Highly-purified plasma and platelet Factor VIII/von Willebrand Factor had potent lectin activity when measured in a haemagglutination assay. This lectin activity was inhibited by monoclonal and heterologous antibodies to Factor VIII/von Willebrand Factor as well as by hexosamines, mannose and net-positively charged amino acids. PMID:6422929

Booth, W J; Furby, F H; Berndt, M C; Castaldi, P A

1984-01-30

94

Atomic Scattering Factors  

NSDL National Science Digital Library

From the Lawrence Berkeley Laboratory's Center for X-Ray Optics, these "atomic scattering factors are based upon photoabsorption measurements of elements in their elemental state." These easy-to-use tables allow users to search out atomic scattering factor data by element and look up the x-ray properties of elements, the index of refraction for a compound material, the x-ray attenuation length of a solid, the x-ray transmission of a solid or a gas, and more. Most of the tables are accessed by way of an online query form with variables such as material, density, and photon energy range entered by the user. Most outputs come in plot form for quick viewing, or results may be retrieved as a text or postscript file for use with a personal plotting software.

95

Factorized Diffusion Map Approximation  

PubMed Central

Diffusion maps are among the most powerful Machine Learning tools to analyze and work with complex high-dimensional datasets. Unfortunately, the estimation of these maps from a finite sample is known to suffer from the curse of dimensionality. Motivated by other machine learning models for which the existence of structure in the underlying distribution of data can reduce the complexity of estimation, we study and show how the factorization of the underlying distribution into independent subspaces can help us to estimate diffusion maps more accurately. Building upon this result, we propose and develop an algorithm that can automatically factorize a high dimensional data space in order to minimize the error of estimation of its diffusion map, even in the case when the underlying distribution is not decomposable. Experiments on both the synthetic and real-world datasets demonstrate improved estimation performance of our method over the standard diffusion-map framework. PMID:25309676

Amizadeh, Saeed; Valizadegan, Hamed; Hauskrecht, Milos

2013-01-01

96

Tissue factor and cancer  

PubMed Central

Summary The hemostatic system is involved in multiple interactions with transformed cells that progress from a dormant, non-vascularized tumor to highly metastatic phenotypes. Oncogenic transformations up regulate not only the initiator of the coagulation cascade, tissue factor (TF), but also induce other molecules that are required for TF’s direct cell signaling activity, including the protease activated receptor (PAR) 2 and factor VIIa. TF-dependent signaling is a major driver for primary tumor progression, whereas TF-initiated coagulation and other components of the hemostatic system support metastasis. Basic research continues to identify pivotal molecular interactions in these processes and provides potential leads for targeting specific tumor promoting pathways associated with hemostasis and thrombosis. PMID:23026674

Ruf, Wolfram

2013-01-01

97

Power factor controllers  

SciTech Connect

The power factor controller (PFC) is a solid state electronic device that reduces excessive energy waste in ac induction motors. The significance of the PFC lies in the fact that nearly a billion induction motors are used daily. The PFC is applicable to both single phase and three phase induction motors. Since it is connected to the power lines of the motor and requires no modification to the motor itself, it may be applied to existing motors as well as to new installations.

Not Available

1982-01-01

98

Factor Trail Game  

NSDL National Science Digital Library

In this math game, learners identify the factors of a number to earn points. The score sheet used for this game provides a built-in assessment tool that teachers can use to check their students' understanding. This game also provides an opportunity for cooperative learning--learners check one another's work before points are awarded. This lesson guide includes questions for learners, assessment options, extensions, and reflection questions.

Vennebush., G. P.

2008-01-01

99

R-Factor  

NSDL National Science Digital Library

The amount of energy used in a home is greatly impacted by the type of materials used in constructing the home. In particular, the thermal conductivity of the materials will affect how quickly heat is allowed to enter or leave the home. In this hands-on activity, students will measure the ability of various materials to resist heat flow (R-factor) by placing a light bulb inside boxes made of the materials and monitoring the temperatures both inside and outside.

Pratte, John

2008-12-11

100

The malingering factor.  

PubMed

The influence of malingering and suboptimal performance on neuropsychological tests has become a major interest of clinical neuropsychologists. Methods to detect malingering have focused on specialized tests or embedded patterns associated with malingering present in the conventional neuropsychology tests. There are two stages to the study of their validity. The first stage involves whether the method can discriminate malingering subjects from those who are not malingering. In the second stage, they must be examined for their relationship to the conventional tests used to establish impairment and disability. Constantinou, Bauer, Ashendorf, Fisher, and McCaffrey (2005. Is poor performance on recognition memory effort measures indicative of generalized poor performance on neuropsychological tests? Archives of Clinical Neuropsychology, 20, 191-198.) conducted the only study in which correlations are presented between a commonly used symptom validity test, the Test of Memory Malingering (TOMM) and the subtests of the Wechsler Adult Intelligence Scale-Revised (WAIS-R). A factor analysis was conducted using these correlations. It revealed a clear malingering factor that explained significant variance in the TOMM and the WAIS-R subtests. The relationship of malingering with cognitive tests is complex: some tests are sensitive to malingering and others are not. Factor analysis can summarize the magnitude of variance associated with each test and reveal the patterns of inter-relationships between malingering and clinical tests. The analysis also suggested that malingering assessment methods could be improved by the addition of timing the responses. PMID:21345930

Williams, J Michael

2011-04-01

101

Human Factors Review Plan  

SciTech Connect

''Human Factors'' is concerned with the incorporation of human user considerations into a system in order to maximize human reliability and reduce errors. This Review Plan is intended to assist in the assessment of human factors conditions in existing DOE facilities. In addition to specifying assessment methodologies, the plan describes techniques for improving conditions which are found to not adequately support reliable human performance. The following topics are addressed: (1) selection of areas for review describes techniques for needs assessment to assist in selecting and prioritizing areas for review; (2) human factors engineering review is concerned with optimizing the interfaces between people and equipment and people and their work environment; (3) procedures review evaluates completeness and accuracy of procedures, as well as their usability and management; (4) organizational interface review is concerned with communication and coordination between all levels of an organization; and (5) training review evaluates training program criteria such as those involving: trainee selection, qualification of training staff, content and conduct of training, requalification training, and program management.

Paramore, B.; Peterson, L.R. (eds.)

1985-12-01

102

Fano factor estimation.  

PubMed

Fano factor is one of the most widely used measures of variability of spike trains. Its standard estimator is the ratio of sample variance to sample mean of spike counts observed in a time window and the quality of the estimator strongly depends on the length of the window. We investigate this dependence under the assumption that the spike train behaves as an equilibrium renewal process. It is shown what characteristics of the spike train have large effect on the estimator bias. Namely, the effect of refractory period is analytically evaluated. Next, we create an approximate asymptotic formula for the mean square error of the estimator, which can also be used to find minimum of the error in estimation from single spike trains. The accuracy of the Fano factor estimator is compared with the accuracy of the estimator based on the squared coefficient of variation. All the results are illustrated for spike trains with gamma and inverse Gaussian probability distributions of interspike intervals. Finally, we discuss possibilities of how to select a suitable observation window for the Fano factor estimation. PMID:24245675

Rajdl, Kamil; Lansky, Petr

2014-02-01

103

Cerebral Ischemia: New Risk Factors  

Microsoft Academic Search

Stroke is a disease with well-defined modifiable risk factors such as arterial hypertension, smoking, diabetes, hyperlipidemia and atrial fibrillation. The need of new risk factors is based on the fact that only half the cardiovascular disease risk is explained by conventional risk factors. Inflammatory markers, infection, homocysteine and sleep-disordered breathing rank as the four most important new risk factors in

Jaime Diaz; Angel P. Sempere

2004-01-01

104

Journal Information Journal Impact Factor  

E-print Network

Journal Information Journal Impact Factor 5-Year Journal Impact Factor Journal Self Cites Journal Immediacy Index Journal Cited Half-Life 2012 JCR Science Edition Journal: CZECHOSLOVAK MATHEMATICAL JOURNAL Mark Journal Title ISSN Total Cites Impact Factor 5-Year Impact Factor Immediacy Index Citable Items

Krejcí, Pavel

105

Risk Factors for Eating Disorders  

ERIC Educational Resources Information Center

The authors review research on risk factors for eating disorders, restricting their focus to studies in which clear precedence of the hypothesized risk factor over onset of the disorder is established. They illustrate how studies of sociocultural risk factors and biological factors have progressed on parallel tracks and propose that major advances…

Striegel-Moore, Ruth H.; Bulik, Cynthia M.

2007-01-01

106

Risk Factors for Eating Disorders  

Microsoft Academic Search

The authors review research on risk factors for eating disorders, restricting their focus to studies in which clear precedence of the hypothesized risk factor over onset of the disorder is established. They illustrate how studies of sociocultural risk factors and biological factors have progressed on parallel tracks and propose that major advances in understanding the etiology of eating disorders require

Ruth H. Striegel-Moore; Cynthia M. Bulik

2007-01-01

107

Activation of human factor V by factor Xa and thrombin  

SciTech Connect

The activation of human factor V by factor Xa and thrombin was studied by functional assessment of cofactor activity and sodium dodecyl sulfate-polycarylamide gel electrophoresis followed by either autoradiography of {sup 125}I-labeled factor V activation products or Western blot analyses of unlabeled factor V activation products. Cofactor activity was measured by the ability of the factor V/Va peptides to support the activation of prothrombin. The factor Xa catalyzed cleavage of factor V was observed to be time, phospholipid, and calcium ion dependent, yielding a cofactor with activity equal to that of thrombin-activated factor V (factor Va). The cleavage pattern differed markedly from the one observed in the bovine system. The factor Xa activated factor V subunits expressing cofactor activity were isolated and found to consist of peptides of M{sub r} 220,000 and 105,000. Although thrombin cleaved the M{sub r} 220,000 peptide to yield peptides previously shown to be products of thrombin activation, cofactor activity did not increase. N-Terminal sequence analysis confirmed that both factor Xa and thrombin cleave factor V at the same bond to generate the M{sub r} 220,000 peptide. The factor Xa dependent functional assessment of {sup 125}I-labeled factor V coupled with densitometric analyses of the cleavage products indicated that the cofactor activity of factor Xa activated factor V closely paralleled the appearance of the M{sub r} 220,000 peptide. The data indicate that factor Xa is as efficient an enzyme toward factor V as thrombin.

Monkovic, D.D.; Tracy, P.B. (Univ. of Vermont, Burlington (USA))

1990-02-06

108

Neutron quality factor  

SciTech Connect

Both the International Commission on Radiological Protection (ICRP) and the National Council on Radiation Protection and Measurements (NCRP) have recommended that the radiation quality weighting factor for neutrons (Q{sub n}, or the corresponding new modifying factor, w{sub R}) be increased by a value of two for most radiation protection practices. This means an increase in the recommended value for Q{sub n} from a nominal value of 10 to a nominal value of 20. This increase may be interpreted to mean that the biological effectiveness of neutrons is two times greater than previously thought. A decision to increase the value of Q{sub n} will have a major impact on the regulations and radiation protection programs of Federal agencies responsible for the protection of radiation workers. Therefore, the purposes of this report are: (1) to examine the general concept of {open_quotes}quality factor{close_quotes} (Q) in radiation protection and the rationale for the selection of specific values of Q{sub n}; and (2) to make such recommendations to the Federal agencies, as appropriate. This report is not intended to be an exhaustive review of the scientific literature on the biological effects of neutrons, with the aim of defending a particular value for Q{sub n}. Rather, the working group examined the technical issues surrounding the current recommendations of scientific advisory bodies on this matter, with the aim of determining if these recommendations should be adopted by the Federal agencies. Ultimately, the group concluded that there was no compelling basis for a change in Q{sub n}. The report was prepared by Federal scientists working under the auspices of the Science Panel of the Committee on Interagency Radiation Research and Policy Coordination (CIRRPC).

NONE

1995-06-01

109

Milestones and impact factors.  

PubMed

Environmental Health has just received its first Impact Factor by Thomson ISI. At a level of 2.48, this achievement is quite satisfactory and places Environmental Health in the top 25% of environmental science journals. When the journal was launched in 2002, it was still unclear whether the Open Access publishing model could be made into a viable commercial enterprise within the biomedical field. During the past eight years, Open Access journals have become widely available, although still covering only about 15% of journal titles. Major funding agencies and institutions, including prominent US universities, now require that researchers publish in Open Access journals. Because of the profound role of scientific journals for the sharing of results and communication between researchers, the advent of Open Access may be of as much significance as the transition from handwriting to printing via moveable type. As Environmental Health is an electronic Open Access journal, the numbers of downloads at the journal website can be retrieved. The top-20 list of articles most frequently accessed shows that all of them have been downloaded over 10,000 times. Back in 2002, the first article published was accessed only 49 times during the following month. A year later, the server had over 1,000 downloads per month, and now the total number of monthly downloads approaches 50,000. These statistics complement the Impact Factor and confirm the viability of Open Access in our field of research. The advent of digital media and its decentralized mode of distribution - the internet - have dramatically changed the control and financing of scientific information dissemination, while facilitating peer review, accelerating editorial handling, and supporting much needed transparency. Both the meaning and means of "having an impact" are therefore changing, as will the degree and way in which scientific journals remain "factors" in that impact. PMID:20615249

Ozonoff, David M; Grandjean, Philippe

2010-01-01

110

Factors and Multiples Puzzle  

NSDL National Science Digital Library

This puzzle, played with cards on a board (downloadable file), provides an interesting context in which students can apply their knowledge of number properties. Students attempt to arrange 25 numbers and 10 property headings into a 5 by 5 grid so that each number satisfies two conditions. Properties addressed include primes, square and triangular numbers, specific sets of multiples and factors, and parity. It can be worked individually or in small groups cooperatively. The Teachers' Notes page offers suggestions for implementation, discussion questions, ideas for extension and support, and links to an article, "Using Games in the Classroom" (catalogued separately).

2010-02-01

111

Nucleon elastic form factors  

SciTech Connect

The nucleon form factors are still the subject of active investigation even after an experimental effort spanning 50 years. This is because they are of critical importance to our understanding of the electromagnetic properties of nuclei and provide a unique testing ground for QCD motivated models of nucleon structure. Progress in polarized beams, polarized targets and recoil polarimetry have allowed an important and precise set of data to be collected over the last decade. I will review the experimental status of elastic electron scattering from the nucleon along with an outlook for future progress.

D. Day

2007-03-01

112

Human factors: Aeronautics  

NASA Technical Reports Server (NTRS)

The objectives of the Aeronautics Human Factors Research and Technology program are to provide the technology base and capability to design effective crew-cockpit systems and to advance solutions to human problems affecting air transport and rotorcraft effectiveness and safety. Advanced automation technologies, information display capabilities under computer control, and concern for the effects of human error in flight operations are elements which drive the directions of the program. Thus, the program has four thrusts: flight management, human engineering methods, rotorcraft, and subsonic transports.

Jenkins, James P.

1988-01-01

113

Presulfidation of CoMo and NiMoP Catalysts by Ammonium Thiosulfate  

Microsoft Academic Search

Ammonium thiosulfate ((NH4)2S2O3) was used as a sulfiding agent for presulfiding CoMo and NiMoP catalysts. The effect of the amount of (NH4)2S2O3 on hydrodesulfurization (HDS) activity was investigated. For the CoMo series, the use of a proper amount of (NH4)2S2O3 gave a higher HDS activity than when the catalyst was sulfided by H2S. SO42- formed during presulfidation modified the Al2O3

Hui GE; Xuekuan LI; Guofu WANG; Zhangfeng QIN; Zhanjun LÜ; Jianguo WANG

2010-01-01

114

The atrial natriuretic factor.  

PubMed Central

In less than three years since the rapid and potent natriuretic response to intravenous injection of atrial myocardial extract in rats was reported the factor responsible for the diuretic, natriuretic, and vasodilating activity of the atrial homogenates was isolated, its chemical structure elucidated, and its total synthesis achieved. Also the cDNA and the gene encoding for the atrial natriuretic factor in mice, rats, and man have been cloned and the chromosomal site identified. The major effects of this hormone are vasodilatation, prevention and inhibition of the contraction induced by noradrenaline and angiotensin II, diuresis, and natriuresis associated in most instances with a pronounced increase in glomerular filtration rate and filtration fraction, inhibition of aldosterone secretion, and considerable stimulation of particulate guanylate cyclase activity. High density specific binding sites have been demonstrated in the zona glomerulosa of the adrenal cortex, in the renal glomeruli, and in the collecting ducts, and in the brain areas involved in the regulation of blood pressure and of sodium and water (AV3V region, subfornical organ, nucleus tractus solitarius, area postrema). Images Fig 1 Fig 5 PMID:2945572

Genest, J

1986-01-01

115

Immunopurified clotting factor concentrates.  

PubMed

Monoclonally purified factor concentrates have been available for hemophilia treatment since the late 1980's. They are biochemically characterized by a high-degree of clotting factor (FVIII or FIX) purification and by the virtual lack of contaminants (immunoglobulins, fibrinogen and fibronectin). The purification procedure sharply reduces the viral load and increases the safety of the concentrate because of the viral inactivation procedures. Viral safety is demonstrated by prospective studies in previously untreated patients as well as by the huge amount of concentrates produced and used so far without reports of untoward side effects. Monoclonal concentrates are also safe in terms of inhibitor production: they do not elicit the appearance of inhibitors to either FVIII or FIX with increased frequency, as shown by data in published prospective studies. Prospective studies have recently demonstrated that the long-term administration of these high purity concentrates does not exert any side effects on the immune system in HIV-positive hemophiliacs. The FIX concentrate is also extremely safe in terms of thrombotic complications: the highly pure FIX does not activate blood coagulation. It has been shown that the monoclonally purified FIX concentrate caused no thrombotic events in high-risk surgical patients who had previously experienced such complications while on Prothrombin Complex Concentrates. PMID:8177718

Mariani, G; Di Nucci, G D; Arcieri, P

1994-01-01

116

SARSCEST (human factors)  

NASA Technical Reports Server (NTRS)

People interact with the processes and products of contemporary technology. Individuals are affected by these in various ways and individuals shape them. Such interactions come under the label 'human factors'. To expand the understanding of those to whom the term is relatively unfamiliar, its domain includes both an applied science and applications of knowledge. It means both research and development, with implications of research both for basic science and for development. It encompasses not only design and testing but also training and personnel requirements, even though some unwisely try to split these apart both by name and institutionally. The territory includes more than performance at work, though concentration on that aspect, epitomized in the derivation of the term ergonomics, has overshadowed human factors interest in interactions between technology and the home, health, safety, consumers, children and later life, the handicapped, sports and recreation education, and travel. Two aspects of technology considered most significant for work performance, systems and automation, and several approaches to these, are discussed.

Parsons, H. Mcilvaine

1988-01-01

117

Determining the Number of Factors in Approximate Factor Models  

Microsoft Academic Search

In this paper we develop some statistical theory for factor models of large dimen- sions. The focus is the determination of the number of factors, which is an unresolved issue in the rapidly growing literature on multifactor models. We propose a panel Cp criterion and show that the number of factors can be consistently estimated using the criterion. The theory

Jushan Bai; Serena Ng

2002-01-01

118

Como preparar un programa de informacion sobre la asistencia economica (Planning a Financial Aid Awareness Program).  

ERIC Educational Resources Information Center

This booklet, written in Spanish, is intended to be used with a set of slides as part of a presentation to students on "How To Apply for Federal Student Aid" ("Como Solicitar la Asistencia Economica Federal para Estudiantes"). The first part of the book is a script based on the slides. After the script is a guide to hosting a financial aid…

Department of Education, Washington, DC.

119

AFINALES DE 1974, despus de una desas-trosa combinacin de enfermedades como el  

E-print Network

alimento y refu- gio del hurón. En 1988, el descubrimiento de las colonias más extensas de perros llaneros(Cynomys ludovicianus) en Norteamérica en la región de Janos- Casas Grandes,nos llevó a proponer este sitio como un área

Nacional Autónoma de México, Universidad

120

Harold Varmus investido bajo juramento como 14.º director del Instituto Nacional del Cáncer  

Cancer.gov

Ganador del Premio Nobel, doctor Harold E. Varmus, prestó juramento hoy como 14.º director del Instituto Nacional del Cáncer (NCI).  "Es muy estimulante que estés de regreso con nosotros", dijo la secretaria del Departamento de Salud y Servicios Humanos Kathleen Sebelius en la ceremonia de toma de juramento. “Hoy se abre un nuevo capítulo para el Instituto Nacional del Cáncer”.

121

Autonomia e Motivação em narrativas de aprendizes de português como língua estrangeira1  

Microsoft Academic Search

Neste artigo, discuto os resultados de minha pesquisa dentro do projeto AMFALE - Autonomia em um Modelo Fractal de Aquisição de Língua Estrangeira. Com base em conceitos de autonomia e motivação e na correlação entre eles, analiso narrativas de aprendizes de português como língua estrangeira em Belo Horizonte. Tais análises atestam que a experiência de aprendizagem inserida em uma comunidade

Fernanda Sousa Carvalho

122

O mercado de carbono como instrumento de conservação da floresta amazônica  

Microsoft Academic Search

Este trabalho analisa a questão ambiental presente nas políticas públicas para a região amazônica, incluindo a Lei de Gestão de Florestas Públicas (Lei 11.284\\/06), sancionada com o objetivo de regulamentar a gestão de florestas públicas no Brasil e promover o desenvolvimento sustentável. O Mecanismo de Desenvolvimento Limpo (MDL) do Protocolo de Kyoto é sugerido como instrumento de conservação florestal. Por

Mariano Rua Lamarca Junior; Cesar Roberto Leite da Silva

2008-01-01

123

Un estudio exploratorio sobre el desarrollo de creencias sobre síntomas como señales de hipertensión arterial  

Microsoft Academic Search

Aunque la hipertensión arterial es un trastorno asintomático, muchos pacientes hipertensos están con- vencidos de experimentar síntomas indicadores de los cambios en su tensión arterial (TA), y los con- sejos y prescripciones médicas pueden verse afectados por estas creencias. Diversos estudios han mos- trado que los pacientes hipertensos usan con frecuencia síntomas como indicadores del estado de su tensión arterial

Genoveva Granados Gámez; Jesús Gil Roales-Nieto; José Luis; Ybarra Sagarduy

2006-01-01

124

Como reportar quejas sobre el uso de animales en la enseanza,  

E-print Network

! Como reportar quejas sobre el uso de animales en la enseñanza, investigación, o experimentación animales usados en las investigaciones, la enseñanza o experimentación. El Comité Institucional del Cuidado y Uso de Animales (IACUC) está obligado a investigar cualquier queja relacionada al trato y cuidado

Johnston, Daniel

125

Los conceptos de "estructura" y "modelo" como ejemplo paradigmtico transdiciplinar en las Ciencias Humanas y Sociales  

E-print Network

1 Los conceptos de "estructura" y "modelo" como ejemplo paradigmático transdiciplinar en las Ciencias Humanas y Sociales Mgster. Ferro, María Virginia. Introducción: Los conceptos de "estructura" y a los diferentes sentidos de "estructura" y "modelo". Luego se presenta bajo la mirada de la Concepción

Paris-Sud XI, Université de

126

La hipnosis como adjunto en el tratamiento del hábito de fumar. Estudio de caso  

Microsoft Academic Search

Se presenta el caso de una paciente de 33 años con dependencia a la nicotina que lle vaba 9 años fu- mando una media de 35 cigarrillos diarios. Intentó dejarlo hace 3 años pero tuvo una recaída a los seis meses por problemas de ansiedad y continuó con su adicción. El tr atamiento tuvo como objetivo que la paciente dejara

María Elena; Mendoza Figueroa

2000-01-01

127

Psychosomatic factors in pruritus.  

PubMed

Pruritus and psyche are intricately and reciprocally related, with psychophysiological evidence and psychopathological explanations helping us to understand their complex association. Their interaction may be conceptualized and classified into 3 groups: pruritic diseases with psychiatric sequelae, pruritic diseases aggravated by psychosocial factors, and psychiatric disorders causing pruritus. Management of chronic pruritus is directed at treating the underlying causes and adopting a multidisciplinary approach to address the dermatologic, somatosensory, cognitive, and emotional aspects. Pharmcotherapeutic agents that are useful for chronic pruritus with comorbid depression and/or anxiety comprise selective serotonin reuptake inhibitors, mirtazapine, tricyclic antidepressants (amitriptyline and doxepin), and anticonvulsants (gabapentin, pregabalin); the role of neurokinin receptor-1 antagonists awaits verification. Antipsychotics are required for treating itch and formication associated with schizophrenia and delusion of parasitosis (including Morgellons disease). PMID:23245971

Tey, Hong Liang; Wallengren, Joanna; Yosipovitch, Gil

2013-01-01

128

Psychosomatic factors in pruritus  

PubMed Central

Pruritus and psyche are intricately and reciprocally related, with psychophysiological evidence and psychopathological explanations helping us to understand their complex association. Their interaction may be conceptualized and classified into 3 groups: pruritic diseases with psychiatric sequelae, pruritic diseases aggravated by psychosocial factors, and psychiatric disorders causing pruritus. Management of chronic pruritus is directed at treating the underlying causes and adopting a multidisciplinary approach to address the dermatologic, somatosensory, cognitive, and emotional aspects. Pharmcotherapeutic agents that are useful for chronic pruritus with comorbid depression and/or anxiety comprise selective serotonin reuptake inhibitors, mirtazapine, tricyclic antidepressants (amitriptyline and doxepin), and anticonvulsants (gabapentin, pregabalin); the role of neurokinin receptor-1 antagonists awaits verification. Antipsychotics are required for treating itch and formication associated with schizophrenia and delusion of parasitosis (including Morgellons disease). PMID:23245971

Tey, Hong Liang; Wallengren, Joanna; Yosipovitch, Gil

2013-01-01

129

Risk factors for hypospadias.  

PubMed

Despite being one of the most common congenital defects in boys, the etiology of hypospadias remains largely unknown. In this case-referent study, we evaluated a wide spectrum of potential risk factors for hypospadias. Cases were identified from the hospital information system, and referents were recruited through the parents of the cases. Both parents of cases and referents completed written questionnaires that they received through the mail. Logistic regression analyses were used to assess the independent contribution of different factors to the risk of hypospadias. The final database included 583 cases and 251 referents. Hypospadias more often occurred in children whose father had hypospadias (OR=9.7; 95%CI: 1.3-74.0) and in children with a low birth weight (OR=2.3; 95%CI: 1.2-4.2). Indications for elevated risks were found when mothers were DES-daughters (OR=3.5; 95%CI: 0.8-15.6), fathers were subfertile (OR=1.8; 95%CI: 0.7-4.5), the parents had undergone fertility treatment (OR=2.3; 95%CI: 0.9-5.8), and in twin or triplet pregnancies (OR=2.0; 95%CI: 0.8-5.1). Maternal use of iron supplements (OR=2.2; 95%CI: 0.8-6.0), maternal smoking (OR=1.5; 95%CI: 1.0-2.4), paternal prescriptive drug use (OR=2.6; 95%CI: 1.1-6.6), and paternal exposure to pesticides (OR=2.1; 95%CI: 0.6-7.1) during the 3 months immediately prior to conception or in the first trimester of pregnancy also appeared to increase the risk of hypospadias. The associations found in this study support the hypothesis that genetic predisposition, placental insufficiency, and substances that interfere with natural hormones play a role in the etiology of hypospadias. PMID:17103190

Brouwers, Marijn M; Feitz, Wouter F J; Roelofs, Luc A J; Kiemeney, Lambertus A L M; de Gier, Robert P E; Roeleveld, Nel

2007-07-01

130

Factor V is a substrate for the transamidase factor XIIIa.  

PubMed

Coagulation Factor V (Mr = 330,000), upon cleavage by thrombin, produces Factor Va, which is composed of two subunits with Mr values of 94,000 and 74,000, along with two activation fragments possessing no known function. Studies were undertaken to assess the ability of the transamidase Factor XIIIa to covalently incorporate the lysine analogs [3H]putrescine and dansylcadaverine into the thrombin-cleaved (activated) and unactivated forms of human and bovine Factor V. The incorporation of either probe into thrombin-activated Factor V proceeded at an initial rate approximately twice that for unactivated Factor V. The extent of the incorporation of [3H]putrescine or dansylcadaverine into activated or unactivated human Factor V was identical; 4 mol of either probe per mol of Factor V. In the case of bovine Factor V, however, while 4 mol of probe were bound per mol of the unactivated pro-cofactor, 5 mol of either lysine analog were covalently linked to 1 mol of thrombin-cleaved Factor V. Polyacrylamide gel fluorography, immunoaffinity chromatography, and immunoprecipitation identified the largest activation fragment of human Factor V (Mr = 150,000) and bovine Factor V (Mr = 120,000) to contain the sites of incorporation of the covalently bound probes. High molecular weight, apparently covalent polymers of Factor V were produced by the action of Factor XIIIa on activated and unactivated human or bovine Factor V. The absence of either probe in the reaction mixtures did not appear to allow an enhancement of protein polymerization. PMID:2874132

Francis, R T; McDonagh, J; Mann, K G

1986-07-25

131

Optical and structural characterization of the Co/Mo2C/Y system  

NASA Astrophysics Data System (ADS)

We study the thermal behaviour of a tri-layer multilayer, designed by inserting a third material, yttrium, into the previously studied Co/Mo2C system. The system is designed to work at near-normal incidence at the wavelength of 14.1 nm. The theoretical reflectivity of Co-based multilayer (Co/Mo2C/Y system) is improved up to 54% after the addition of yttrium. Two types of multilayers with different orders of yttrium layer are deposited: Co/Mo2C/Y and Co/Y/Mo2C. The samples are annealed up to 600 °C. The multilayers were characterized using hard x-ray and extreme ultraviolet reflectivity, nuclear magnetic resonance (NMR) spectroscopy and x-ray diffraction (XRD). The results show that the reflectivity of the Co/Mo2C/Y multilayer is 27.5% at near normal incidence around 14.6 nm for as-deposited sample, and then it decreases gradually after annealing up to 600 °C. A significant period compression is observed from 300 °C annealing and above. The Co/Y/Mo2C multilayer shows low reflectivity, less than 2.5%. NMR spectra reveal that the pure Co layers are completely mixed with other elements since there is no signal from ferromagnetic Co in the annealing samples of the Co/Mo2C/Y multilayer and all Co/Y/Mo2C samples. Based on the NMR and XRD results, we fit the EUV data for both multilayers with two different models in one period taking into account the formation of the interfacial compounds.

Yuan, Yanyan; Le Guen, Karine; André, Jean-Michel; Wang, Zhanshan; Zhu, Jingtao; Mény, Christian; Jonnard, Philippe

2014-10-01

132

Environmental factors and aggressive behavior  

SciTech Connect

This paper briefly reviews some of the research areas which indicate a correlation between environmental factors and initiation of aggressive behavior. Environmental factors including lunar influences, month of birth, climate and the effects of crowding and certain chemicals are discussed.

Anderson, A.C.

1982-07-01

133

On Local -factors Dihua Jiang  

E-print Network

On Local -factors Dihua Jiang School of Mathematics, University of Minnesota Minneapolis, MN 55455, USA February 27, 2006 Contents 1 Introduction 1 2 Basic Properties of Local -factors 5 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2.3 Remarks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Local Converse

Jiang, Dihua

134

Modifiable Risk Factors Branch (MRFB)  

Cancer.gov

The Modifiable Risk Factors Branch (MRFB) focuses on factors to reduce cancer risk in humans, including exposures to nutritional components; physical activity and energy balance; alcohol and tobacco; and infectious, physical, and chemical agents.

135

Transcription factors in airway diseases  

Microsoft Academic Search

Transcription factors regulate the expression of multiple inflammatory genes and play a pivotal role in chronic inflammatory diseases, such as asthma and chronic obstructive pulmonary disease (COPD). Prominent transcription factors in airway diseases include nuclear factor-?B (NF-?B) and activator protein-1 (AP-1), which together regulate the expression of multiple inflammatory proteins. Glucocorticoids activate glucocorticoid receptors (GR), which act as transcription factors

Peter J Barnes

2006-01-01

136

Penalty Factors From Newton's Method  

Microsoft Academic Search

The penalty factors calculated by the classical B-coefficients method are shown to be proportional (but not equal) to the penalty factors calculated directly from the transposed acobian. It is also shown that the economic operating point is independent of the load and generation distribution factors Z. Expected computational times in examples with up to 5873 buses and 943 generators are

F. L. Alvarado

1978-01-01

137

Sample size in factor analysis  

Microsoft Academic Search

In the factor analysis literature, much attention has be;;n given to the issue of sample size. It is widely understood that the use of larger samples in applica- tions of factor analysis tends to provide results such that sample factor loadings are more precise estimates of population loadings and are also more stable, or les s variable, across repeated sampling.

Robert C. MacCallum; Keith F. Widaman; Shaobo Zhang; Sehee Hong

1999-01-01

138

FREE PRODUCT FACTORIZATION PETER NELSON  

E-print Network

FREE PRODUCT FACTORIZATION PETER NELSON Abstract. In this paper proves a result about free products of groups, namely, that if a group is finitely generated, it can be factored uniquely into the free product, and then given one homomorphism from each factor to X, there is a unique homomorphism from the free product

May, J. Peter

139

Asymptotic behaviour of form factors  

Microsoft Academic Search

An identity for the renormalized current operator is proved by the double renormalization method. The identity brings about a nonlinear relationship for a form factor and a new renormgroup equation for the form factor, where the external momenta are fixed at the renormalization point. These equations are applied to the PHI sub ((6) sup(3) theory and the electromagnetic form factor

M. Bordag; B. Doerfel; D. Robaschik; E. Wieczorek

1980-01-01

140

FACTOR FINDER CD-ROM  

EPA Science Inventory

The Factor Finder CD-ROM is a user-friendly, searchable tool used to locate exposure factors and sociodemographic data for user-defined populations. Factor Finder improves the exposure assessors and risk assessors (etc.) ability to efficiently locate exposure-related informatio...

141

Factor Analysis via Components Analysis  

ERIC Educational Resources Information Center

When the factor analysis model holds, component loadings are linear combinations of factor loadings, and vice versa. This interrelation permits us to define new optimization criteria and estimation methods for exploratory factor analysis. Although this article is primarily conceptual in nature, an illustrative example and a small simulation show…

Bentler, Peter M.; de Leeuw, Jan

2011-01-01

142

Phonological Awareness: Factors of Influence  

ERIC Educational Resources Information Center

Early child development is influenced by various genetic and environmental factors. This study aims to identify factors that affect the phonological awareness of preschool and first grade children. Based on a sample of 330 German-speaking children (mean age = 6.2 years) the following domains were evaluated: Parent factors, birth and pregnancy,…

Frohlich, Linda Paulina; Petermann, Franz; Metz, Dorothee

2013-01-01

143

K-factor shadow removal  

NASA Astrophysics Data System (ADS)

The new image factorization algorithm, the k-factor method, is applied to the problem of shadow removal. Unlike the other technique, PCNN factorization, the k-factor method will completely remove shadows. It has several features that allow automatic or manual control that tailor it to specific applications. Unlike histogram equalization which globally remaps rather than remove shadows, the k-factor method eliminates regional shadows without remapping other regions. The algorithm is presented, numerous examples of its performance shown, and future plans discussed.

Taylor, Jaime R.; Johnson, John L.

1999-03-01

144

Human Factors in Training  

NASA Technical Reports Server (NTRS)

Future space missions will be significantly longer than current Shuttle missions and new systems will be more complex than current systems. Increasing communication delays between crews and Earth-based support means that astronauts need to be prepared to handle the unexpected on their own. As crews become more autonomous, their potential span of control and required expertise must grow to match their autonomy. It is not possible to train for every eventuality ahead of time on the ground, or to maintain trained skills across long intervals of disuse. To adequately prepare NASA personnel for these challenges, new training approaches, methodologies, and tools are required. This research project aims at developing these training capabilities. Training efforts in FY07 strongly focused on crew medical training, but also began exploring how Space Flight Resource Management training for Mission Operations Directorate (MOD) Flight Controllers could be integrated with systems training for optimal Mission Control Center operations. Beginning in January 2008, the training research effort will include team training prototypes and tools. The Training Task addresses Program risks that lie at the intersection of the following three risks identified by the Project: 1) Risk associated with poor task design; 2) Risk of error due to inadequate information; 3) Risk associated with reduced safety and efficiency due to poor human factors design.

Barshi, Immanuel; Byme, Vicky; Arsintescu, Lucia

2008-01-01

145

Human Factors in Training  

NASA Technical Reports Server (NTRS)

Future space missions will be significantly longer than current shuttle missions and new systems will be more complex than current systems. Increasing communication delays between crews and Earth-based support means that astronauts need to be prepared to handle the unexpected on their own. As crews become more autonomous, their potential span of control and required expertise must grow to match their autonomy. It is not possible to train for every eventuality ahead of time on the ground, or to maintain trained skills across long intervals of disuse. To adequately prepare NASA personnel for these challenges, new training approaches, methodologies, and tools are required. This research project aims at developing these training capabilities. By researching established training principles, examining future needs, and by using current practices in space flight training as test beds, both in Flight Controller and Crew Medical domains, this research project is mitigating program risks and generating templates and requirements to meet future training needs. Training efforts in Fiscal Year 08 (FY08) strongly focused on crew medical training, but also began exploring how Space Flight Resource Management training for Mission Operations Directorate (MOD) Flight Controllers could be integrated with systems training for optimal Mission Control Center (MCC) operations. The Training Task addresses Program risks that lie at the intersection of the following three risks identified by the Project: (1) Risk associated with poor task design (2) Risk of error due to inadequate information (3) Risk associated with reduced safety and efficiency due to poor human factors design

Barshi, Immanuel; Byrne, Vicky; Arsintescu, Lucia; Connell, Erin; Sandor, Aniko

2009-01-01

146

Human Factors in Training  

NASA Technical Reports Server (NTRS)

Future space missions will be significantly longer than current shuttle missions and new systems will be more complex than current systems. Increasing communication delays between crews and Earth-based support means that astronauts need to be prepared to handle the unexpected on their own. As crews become more autonomous, their potential span of control and required expertise must grow to match their autonomy. It is not possible to train for every eventuality ahead of time on the ground, or to maintain trained skills across long intervals of disuse. To adequately prepare NASA personnel for these challenges, new training approaches, methodologies, and tools are required. This research project aims at developing these training capabilities. By researching established training principles, examining future needs, and by using current practices in space flight training as test beds, both in Flight Controller and Crew Medical domains, this research project is mitigating program risks and generating templates and requirements to meet future training needs. Training efforts in Fiscal Year 09 (FY09) strongly focused on crew medical training, but also began exploring how Space Flight Resource Management training for Mission Operations Directorate (MOD) Flight Controllers could be integrated with systems training for optimal Mission Control Center (MCC) operations. The Training Task addresses Program risks that lie at the intersection of the following three risks identified by the Project: 1) Risk associated with poor task design; 2) Risk of error due to inadequate information; and 3) Risk associated with reduced safety and efficiency due to poor human factors design.

Barshi, Immanuel; Byrne, Vicky; Arsintescu, Lucia; Connell, Erin

2010-01-01

147

Immunoevasive Aspergillus virulence factors.  

PubMed

Individuals with structural lung disease or defective immunity are predisposed to Aspergillus-associated disease. Manifestations range from allergic to cavitary or angio-invasive syndromes. Despite daily spore inhalation, immunocompetence facilitates clearance through initiation of innate and adaptive host responses. These include mechanical barriers, phagocyte activation, antimicrobial peptide release and pattern recognition receptor activation. Adaptive responses include Th1 and Th2 approaches. Understanding Aspergillus virulence mechanisms remains critical to the development of effective research and treatment strategies to counteract the fungi. Major virulence factors relate to fungal structure, protease release and allergens; however, mechanisms utilized to evade immune recognition continue to be important in establishing infection. These include the fungal rodlet layer, dihydroxynaphthalene-melanin, detoxifying systems for reactive oxygen species and toxin release. One major immunoevasive toxin, gliotoxin, plays a key role in mediating Aspergillus-associated colonization in the context of cystic fibrosis. Here, it down-regulates vitamin D receptor expression which following itraconazole therapy is rescued concurrent with decreased Th2 cytokine (IL-5 and IL-13) concentrations in the CF airway. This review focuses on the interaction between Aspergillus pathogenic mechanisms, host immune responses and the immunoevasive strategies employed by the organism during disease states such as that observed in cystic fibrosis. PMID:24972669

Chotirmall, Sanjay H; Mirkovic, Bojana; Lavelle, Gillian M; McElvaney, Noel G

2014-12-01

148

Microphthalmia Transcription Factor  

PubMed Central

Malignant melanomas do not uniformly retain expression of melanocytic gene products—an observation associated with diagnostic dilemmas. Microphthalmia transcription factor (Mitf) is a melanocytic nuclear protein critical for the embryonic development and postnatal viability of melanocytes. It serves as a master regulator in modulating extracellular signals, such as those triggered by ?-MSH and c-Kit ligand. Because of its central role in melanocyte survival and to assess its potential use as a histopathological marker for melanoma, Mitf expression was examined in histologically confirmed human melanoma specimens. Western blot analysis of melanoma cell lines revealed consistent expression of two Mitf protein isoforms differing by MAP kinase-mediated phosphorylation. In a series of 76 consecutive human melanoma surgical specimens, 100% stained positively for Mitf with a nuclear pattern of reactivity. In a side-by-side comparison, Mitf staining was positive in melanomas that failed to stain for either HMB-45 or S-100, the most common currently used melanoma markers. Of 60 non-melanoma tumors, none displayed nuclear Mitf staining and two displayed cytoplasmic staining. Although Mitf does not distinguish benign from malignant melanocytic lesions, for invasive neoplasms it appears to be a highly sensitive and specific histopathological melanocyte marker for melanoma. PMID:10487831

King, Roy; Weilbaecher, Katherine N.; McGill, Gael; Cooley, Edward; Mihm, Martin; Fisher, David E.

1999-01-01

149

The Human Factor  

NSDL National Science Digital Library

Inspired by âÂÂâ¦the courage, industry and intelligence required of the American working manâÂÂ, two colleagues from the Harvard Business School (Donald Davenport and Frank Ayres) sent out a call to leading businesses in order to develop a visual collection that could be used in the classroom. During the 1930s, they received over 2,100 photographs that documented âÂÂthe human factorâ embodied in the interactions between worker and machine. Recently, the Baker Library at the Harvard Business School created this online exhibition to showcase a selection of these remarkable images. Visitors should begin by reading the introductory essay; they should then proceed to the exhibition, which is divided into nine sections. Each section begins with a short preface, and then continues on to a sampling of images, which include workers monitoring massive wheels of Swiss cheese in 1933 and a photograph of women assembling parts for Philco radios in 1926. Each photograph can be viewed in great detail, and it is worth noting that the site also contains an exemplary bibliography.

150

[Environmental factors in ALS].  

PubMed

ALS is likely to be a disorder of multifactorial origin. Among all the factors that may increase the risk of ALS, environmental ones are being studied for many years, but in the recent years, several advances have pointed to a new interest in their potential involvement in the disease process, especially for the cyanotoxin BMAA. Food containing BMAA has been found on Guam, a well-known focus of ALS/parkinsonism/dementia and high levels of BMAA have been identified into the brain of these patients. The BMAA cyanotoxin is potentially ubiquitous and have also been found into the food of patients who died from ALS both in Europe and USA. BMAA can be wrongly integrated into the protein structure during mRNA traduction, competing with serine. This may induce abnormal protein folding and a subsequent cell death. Heavy metals, such as lead or mercury may be directly toxic for neuronal cells. Several works have suggested an increased risk of ALS in individuals chronically exposed to these metals. Exposure to pesticides has been suggested to be linked to an increased risk of developing ALS. The mechanism of their toxicity is likely to be mediated by paraoxonases. These proteins are in charge of detoxifying the organism from toxins, and particularly organophosphates. To date, there are insufficient scientific data to suggest that exposure to electromagnetic fields may increase the risk of having ALS. We are particularly missing longitudinal cohorts to demonstrate that risk. PMID:24703731

Juntas-Morales, Raul; Pageot, Nicolas; Corcia, Philippe; Camu, William

2014-05-01

151

Alejarse como proceso social: ni?os y ancianos <> en Ayacucho1  

PubMed Central

En investigaciones previas sobre el acogimiento familiar y la adopción en Ayacucho, se ha podido descubrir cómo los ayacuchanos adquieren y producen relaciones sociales. Mientras negocian creativamente los discursos y espacios construidos simultáneamente por instituciones, comunidades, y estructuras sociales, van adquiriendo nuevas formas de relacionarse. Este artículo discute el proceso opuesto: el deshacerse de relaciones de parentesco, y el proceso social del abandono o alejamiento. Cuando se aleja a una persona de su familia o su comunidad, los que se quedan en ella llegan a entenderse como ciertos tipos de personas. En los estudios de caso discutidos aquí, recopilados a través de una detallada y cuidadosa observación participante y de entrevistas etnográficas grabadas entre 2001 y 2007, se puede ver cómo, después de un alejamiento social, los individuos que alejan se reinterpretan como sujetos que se encuentran superándose o volviéndose modernos, o bien sacrificándose. PMID:25177044

Leinaweaver, Jessaca

2013-01-01

152

T-SNAKES Y TRIANGULACIN DE DELAUNAY COMO MTODO DE GENERACIN DE MALLADOS DE ESTRUCTURAS  

E-print Network

T-SNAKES Y TRIANGULACI�N DE DELAUNAY COMO M�TODO DE GENERACI�N DE MALLADOS DE ESTRUCTURAS}@opalo.ciens.ucv.ve RESUMEN La segmentación de estructuras anatómicas a partir de imágenes médicas y la reconstrucción de una representación compacta analítica de estas estructuras es un problema retador. Este trabajo utiliza la técnica de

Coto, Ernesto

153

Risk factors for periodontal disease.  

PubMed

Risk factors play an important role in an individual's response to periodontal infection. Identification of these risk factors helps to target patients for prevention and treatment, with modification of risk factors critical to the control of periodontal disease. Shifts in our understanding of periodontal disease prevalence, and advances in scientific methodology and statistical analysis in the last few decades, have allowed identification of several major systemic risk factors for periodontal disease. The first change in our thinking was the understanding that periodontal disease is not universal, but that severe forms are found only in a portion of the adult population who show abnormal susceptibility. Analysis of risk factors and the ability to statistically adjust and stratify populations to eliminate the effects of confounding factors have allowed identification of independent risk factors. These independent but modifiable, risk factors for periodontal disease include lifestyle factors, such as smoking and alcohol consumption. They also include diseases and unhealthy conditions such as diabetes mellitus, obesity, metabolic syndrome, osteoporosis, and low dietary calcium and vitamin D. These risk factors are modifiable and their management is a major component of the contemporary care of many periodontal patients. Genetic factors also play a role in periodontal disease and allow one to target individuals for prevention and early detection. The role of genetic factors in aggressive periodontitis is clear. However, although genetic factors (i.e., specific genes) are strongly suspected to have an association with chronic adult periodontitis, there is as yet no clear evidence for this in the general population. It is important to pursue efforts to identify genetic factors associated with chronic periodontitis because such factors have potential in identifying patients who have a high susceptibility for development of this disease. Many of the systemic risk factors for periodontal disease, such as smoking, diabetes and obesity, and osteoporosis in postmenopausal women, are relatively common and can be expected to affect most patients with periodontal disease seen in clinics and dental practices. Hence, risk factor identification and management has become a key component of care for periodontal patients. PMID:23574464

Genco, Robert J; Borgnakke, Wenche S

2013-06-01

154

Factors affecting running economy.  

PubMed

Running economy, defined as the steady-state VO2 for a given running velocity, has been shown to account for a large and significant proportion of variation in distance-running performance among runners roughly comparable in VO2 max. Despite this recognition, relatively little is known regarding the potpourri of physiological, environmental, structural and mechanical factors potentially associated with a lower aerobic demand of running. Early attempts at quantifying the energy expenditure of exhaustive runs incorporated measurements of oxygen consumption before, during, and after exercise. The validity of this approach has been questioned, however, since recent evidence has demonstrated that only a moderate relationship exists between postexercise VO2 and anaerobic metabolism. The energy demands for submaximal running (i.e. running economy) can be quantified by calculating the steady-state VO2, expressed with respect to body mass and time, for a standardised, submaximal running speed. Since this variable represents the aerobic demand of running, the generation of energy must derive wholly from cell respiration and not from substantial protein catabolism. Research has indicated that at low to moderate work rates, the steady-state energy condition is attained in about 3 minutes. Trained individuals reach steady-state sooner than unfit subjects. While limited by methodological constraints, the existence of a steady-state has also been verified by the lack of blood lactate accumulation and the presence of a respiratory exchange ratio of less than 1.00. The ability of economy, either singly or in combination with VO2 max, to account for a substantial portion of performance variation among trained distance runners and untrained subjects of comparable ability and fitness level has been demonstrated in recent cross-sectional studies. Limited data from short and long term longitudinal research also suggests that endurance running success is linked to training and growth-related improvements in economy. Intraindividual variation in economy has been shown to vary between 2% and 11% for a given speed. Most of this variation can probably be attributed to biological error. While the majority of evidence does not support a gender difference in running economy, data from some studies suggest that males may be more economical than women. Prepubescent children are less economical than older children and adults, whereas older adults exhibit the same trend when compared to younger counterparts. Because of air and wind resistance, the aerobic demands of indoor treadmill running significantly underestimate the cost of overground running, especially at higher speeds.(ABSTRACT TRUNCATED AT 400 WORDS) PMID:2662320

Morgan, D W; Martin, P E; Krahenbuhl, G S

1989-05-01

155

Rheumatoid factor in Nigerian sera  

PubMed Central

A high prevalence of rheumatoid factor has been found in the sera of apparently healthy inhabitants of two Western Nigerian villages. The prevalence of rheumatoid factor at high titre increased markedly with age. The rheumatoid factor found in the sera of these apparently healthy subjects showed a selective affinity for human ?-globulin rather than rabbit ?-globulin. Rheumatoid factor activity was shown to be restricted to the serum IgM fraction. In one of the two villages a significant correlation was found between the presence of rheumatoid factor at high titre and the presence of IgM malaria antibodies at high titre and the possible role of malaria in the induction of rheumatoid factor formation in these two communities is discussed. PMID:4936803

Greenwood, B. M.; Muller, A. S.; Valkenburg, H. A.

1971-01-01

156

Optimization of stress intensification factors  

SciTech Connect

This paper describes an Electric Power Research Institute (EPRI) project to better define the Stress Intensification Factors (SIFs) and flexibility factors used for evaluation in the ASME Section 3 and B31 piping design Codes. SIFs are used to account for the ability of piping components to withstand fatigue damage due to cyclic loads. Flexibility factors are used to model the ``flexibility`` of a component and can be obtained from the same evaluation used to determine the SIF.

Wais, E.A. [Wais and Associates, Inc., Norcross, GA (United States); Gosselin, S. [Electric Power Research Inst., Charlotte, NC (United States)

1995-12-01

157

Sexual Harassment: Identifying Risk Factors  

Microsoft Academic Search

A new model of the etiology of sexual harassment,the four-factor model, is presented and compared with several models of sexual harassment including the biological model, the organizational model, the sociocultural model,and the sexrole spillover model. A number of risk factors associated with sexually harassing behavior are examined within the framework of the four-factor model of sexual harassment. These include characteristics

Elizabeth A. O'Hare; William O'Donohue

1998-01-01

158

Sigma Factors for Cyanobacterial Transcription  

PubMed Central

Cyanobacteria are photosynthesizing microorganisms that can be used as a model for analyzing gene expression. The expression of genes involves transcription and translation. Transcription is performed by the RNA polymerase (RNAP) holoenzyme, comprising a core enzyme and a sigma (?) factor which confers promoter selectivity. The unique structure, expression, and function of cyanobacterial ? factors (and RNAP core subunits) are summarized here based on studies, reported previously. The types of promoter recognized by the ? factors are also discussed with regard to transcriptional regulation. PMID:19838335

Imamura, Sousuke; Asayama, Munehiko

2009-01-01

159

Factors predicting recurrent endometrial cancer  

PubMed Central

Objectives: The aim of this study was to identify (prognostic) factors that may predict the development of recurrent endometrial cancer and may improve the choice of adjuvant therapy subsequently. Methods: Data of all patients, diagnosed with primary endometrial cancer in Orbis Medical Center Sittard between 2002 and 2010, were analyzed retrospectively. Cox regression analysis was performed for identification of independent prognostic factors; survival was calculated by using the Kaplan-Meier method. Study design: Data of all patients, diagnosed with primary endometrial cancer in Orbis Medical Center Sittard between 2002 and 2010, were analyzed retrospectively. Cox regression analysis was performed for identification of independent prognostic factors; survival was calculated by using the Kaplan-Meier method. Multiple factors were associated with recurrence. Age, histological type and progesteron receptor expression (PR) were identified as independent prognostic factors. Risk profile (according to the PORTEC-1 study) and PR were also independent prognostic factors. Furthermore, PR (p?factors. The effect of adjuvant treatment may improve through more sufficient selection of patients by using the new prognostic­ factors and through better selection of the type of adjuvant therapy. Key words: Endometrial cancer, recurrence, survival, prognostic factors, progesterone receptor expression. PMID:24753943

Huijgens, A.N.J.; Mertens, H.J.M.M.

2013-01-01

160

Heavy quark impact factor in kT-factorization  

E-print Network

We present the calculation of the finite part of the heavy quark impact factor at next-to-leading logarithmic accuracy in a form suitable for phenomenological studies such as the calculation of the cross-section for single bottom quark production at the LHC within the kT-factorization scheme.

Grigorios Chachamis; Michal Deak; German Rodrigo

2013-10-24

161

Protective Factors as Moderators of Risk Factors in Adolescence Bullying  

Microsoft Academic Search

The present study examined the role played by protective factors in moderating the effects of risk factors over bullying and victimization in a sample of 679 male adolescents recruited in Italian high schools. Boys’ involvement in bullying revealed that one in three students has bullied others at least sometimes in the previous three months, and one in six has been

Anna C. Baldry; David P. Farrington

2005-01-01

162

Growth factors and antimicrobial factors of bovine colostrum  

Microsoft Academic Search

Colostrum is the first natural food produced by female mammals during the first 24–36h directly after giving birth. Chemically, colostrum is a very complex fluid rich in nutrients, antibodies and growth factors. In cows the antibodies provide passive immunity to the new born calf, whereas the growth factors especially stimulate the growth of the gut. The other antimicrobial components of

R. Pakkanen; J. Aalto

1997-01-01

163

EXPOSURE FACTORS HANDBOOK PROJECT OVERVIEW  

EPA Science Inventory

The Exposure Factors Handbook (EPA/600/P-95/002Fa-Fc) was published in August 1997. The Handbook provides summary statistical data on exposure factors necessary to assess human exposures to environmental contaminants. New data and studies have become available since 1997. The ...

164

Four Queries About Factor Reality  

Microsoft Academic Search

When I first learned about factor analysis (as an undergraduate over a half-century ago) there were four methodological questions that troubled me. They still do. Although I have used factor analysis in research, with excellent results, it is disconcerting to realize that these basic issues remain unsettled, and are rarely examined with the incisiveness and depth they deserve. I have

Paul E. Meehl

165

Electrical and Production Load Factors  

E-print Network

, 80, 120 and 168 hours/week. Two types of load factors, electrical and production are computed for each shift classification within major industry categories in the U.S. The load factor based on monthly billing hours (ELF) increases with operating...

Sen, Tapajyoti

2010-07-14

166

Exogenous Factors in Hair Disorders  

Microsoft Academic Search

The health and beauty of human hair have immeasurable psychological importance. Hair structure and its cycle are influenced by intentionally or nonintentionally delivered factors such as grooming, heat styling, chemical agents and climatic exposure. All of these factors are capable of causing loss of hair color and luster, harshness, stiffness, weakness, brittleness and flyaway, transient loss of hair or scarring

Liran Horev

2004-01-01

167

Factor Covariance Analysis in Subgroups.  

ERIC Educational Resources Information Center

The problem considered is that of an investigator sampling two or more correlation matrices and desiring to fit a model where a factor pattern matrix is assumed to be identical across samples and we need to estimate only the factor covariance matrix and the unique variance for each sample. A flexible, least squares solution is worked out and…

Pennell, Roger

168

Journal Information Journal Impact Factor  

E-print Network

Journal Information Journal Impact Factor 5-Year Journal Impact Factor Journal Self Cites Journal Immediacy Index 2012 JCR Science Edition Journal: Applications of Mathematics Mark Journal Title ISSN Total- life APPL MATH-CZECH 0862-7940 240 0.222 0.549 0.054 37 7.3 >10.0 Cited Journal Citing Journal Source

Krejcí, Pavel

169

Smoking – A Renal Risk Factor  

Microsoft Academic Search

One of the most important tasks of clinical and experimental nephrology is to identify the risk factors of progression of renal failure. A major renal risk factor which has not been sufficiently acknowledged despite increasing evidence is cigarette smoking. Diabetologists were the first to recognize the adverse effects of smoking on the kidney: both in type 1 and in type

Stephan R. Orth

2000-01-01

170

Activity Factors of the Korean Exposure Factors Handbook  

PubMed Central

Exposure factors based on the Korean population are required for making appropriate risk assessment. It is expected that handbooks for exposure factors will be applied in many fields, as well as by health department risk assessors. The present article describes the development of an exposure factors handbook that specifically focuses on human activities in situations involving the possible risk of exposure to environmental contaminants. We define majour exposure factors that represent behavioral patterns for risk assessment, including time spent on routine activities, in different places, on using transportation, and engaged in activities related to water contact including swimming, bathing and washing. Duration of residence and employment are also defined. National survey data were used to identify recommended levels of exposure factors in terms of time spent on routine activities and period of residence and employment. An online survey was conducted with 2073 subjects who were selected using a stratified random sampling method in order to develop a list of exposure factors for the time spent in different places and in performing water-related activities. We provide the statistical distribution of the variables, and report reference levels of average exposure based on the reliable data in our exposure factors handbook. PMID:24570804

Jo, Soo-Nam; Kim, So-Yeon; Lee, Kyung-Eun; Choi, Kyung-Ho; Kim, Young-Hee

2014-01-01

171

Context Specific Transcription Factor Prediction  

PubMed Central

One of the goals of systems biology is the identification of regulatory mechanisms that govern an organism’s response to external stimuli. Transcription factors have been hypothesized as a major contributor to an organism’s response to various outside stimuli, and a great deal of work has been done to predict the set of transcription factors which regulate a given gene. Most of the current methods seek to identify possible binding sites from genomic sequence. Initial attempts at predicting transcription factors from genomic sequences suffered from the problem of false positives. Making the problem more difficult, it has also been shown that while predicted binding sites might be false positives, they can be shown to bind to their corresponding sequences in vitro. One method for rectifying this is through the use of phylogenetic analysis in which only regions which show high evolutionary conservation are analyzed. However such an approach may be too stringent because of the level of degeneracy shown in transcription factor binding site position weight matrices. Due to the degeneracy, there may be only a few bases that need to be conserved across species. Therefore, while a sequence may not show a high level of evolutionary conservation, these sequences may still show high affinity for the same transcription factor. In predicting transcription factor binding we explore the notion that “Co-expression implies co-regulation” [Allocco et al. BMC Bioinformatics 5:18, 2004]. With multiple genes requiring similar transcription factors binding sites, there exists a basis for eliminating false positives. This method allows for the selection of transcription factors binding sites that are active under a given experimental paradigm, thereby allowing us to indirectly incorporate the effects of chromosome and recognition site presentation upon transcription factor binding prediction. Rather than having to rationalize that a few transcription factors binding sites are over-represented in a cluster of genes, one can show that a few transcription factors are active in the cluster of genes that have been grouped together. Although the method focuses on predicting experiment-specific transcription factor binding sites, it is possible that if such a methodology were used in an iterative process where different experiments were analyzed, one could obtain a comprehensive set of transcription factors binding sites which regulate the various dynamic responses shown by biological systems under a variety of conditions hence building a more comprehensive model of transcriptional regulation. PMID:17377845

Yang, Eric; Simcha, David; Almon, Richard R.; Dubois, Debra C.; Jusko, William J.; Androulakis, Ioannis P.

2014-01-01

172

Factorization in exclusive quarkonium production  

E-print Network

We present factorization theorems for two exclusive heavy-quarkonium production processes: production of two quarkonia in e^+e^- annihilation and production of a quarkonium and a light meson in B-meson decays. We describe the general proofs of factorization and supplement them with explicit one-loop analyses, which illustrate some of the features of the soft-gluon cancellations. We find that violations of factorization are generally suppressed relative to the factorized contributions by a factor v^2m_c/Q for each S-wave charmonium and a factor m_c/Q for each L-wave charmonium with L>0. Here, v is the velocity of the heavy quark or antiquark in the quarkonium rest frame, Q=sqrt{s} for e^+e^- annihilation, Q=m_B for B-meson decays, sqrt{s} is the e^+e^- center-of-momentum energy, m_c is the charm-quark mass, and m_B is the B-meson mass. There are modifications to the suppression factors if quantum-number restrictions apply for the specific process.

Geoffrey T. Bodwin; Xavier Garcia i Tormo; Jungil Lee

2010-02-27

173

Factor analysis of seventeen joint flexibility measures  

Microsoft Academic Search

Seventeen measures of joint flexibility were obtained on 190 volunteer subjects, 124 women and 66 men. Using a Leighton flexometer and a Universal goniometer seventeen measures of flexibility were taken. A principle axes method of factor analysis with oblique rotation revealed four significant factors. The first factor had 14 significant factor loadings (r>0.30) with Factor II having 13, Factor III,

T. B. Hoshizaki; R. D. Bell

1984-01-01

174

Environmental Factors Inducing Human Cancers  

PubMed Central

Background An explosion of research has been done in discovering how human health is affected by environmental factors. I will discuss the impacts of environmental cancer causing factors and how they continue to cause multiple disruptions in cellular networking. Some risk factors may not cause cancer. Other factors initiate consecutive genetic mutations that would eventually alter the normal pathway of cellular proliferations and differentiation. Genetic mutations in four groups of genes; (Oncogenes, Tumor suppressor genes, Apoptosis genes and DNA repairing genes) play a vital role in altering the normal cell division. In recent years, molecular genetics have greatly increased our understanding of the basic mechanisms in cancer development and utilizing these molecular techniques for cancer screening, diagnosis, prognosis and therapies. Inhibition of carcinogenic exposures wherever possible should be the goal of cancer prevention programs to reduce exposures from all environmental carcinogens. PMID:23304670

Parsa, N

2012-01-01

175

ROBUST STRUCTURED MULTIFRONTAL FACTORIZATION AND ...  

E-print Network

For two-dimensional (2D) problems, these are shown to be lower bounds for exact factorizations with any ...... of elastomeric materials and plastic flow in metals. It is an ... For example, consider the following time harmonic Maxwell equations.

2011-05-17

176

Chemical Specific Adjustment factors Workshop  

EPA Science Inventory

The World Health Organization, through the International Programme on Chemical Safety (IPCS), has established guidance on the use of mechanistic data to replace default uncertainty factors for interspecies extrapolation and intraspecies variability in deriving risk values such as...

177

Hierarchical Regression without Phantom Factors.  

ERIC Educational Resources Information Center

Shows that phantom factors are unnecessary to achieve the objectives of a hierarchical regression and gives a direct approach to computing hierarchical or fixed-order regressions that is equivalent to that proposed by P. de Jong (1999).(SLD)

Bentler, Peter M.; Satorra, Albert

2000-01-01

178

Factor Analysis of Multicomponent Samples.  

ERIC Educational Resources Information Center

Described is an experiment in which factor analysis is used to identify and quantify the components of mixtures containing up to four species. Discussed are the theory, procedures, and sample results for this activity. (CW)

Harvey, David T.; Bowman, Amy

1990-01-01

179

What Is Your Inflation Factor?  

ERIC Educational Resources Information Center

Determination of an "inflation factor" at the George Washington University Bookstore is described by its general manager. The primary objective of the study undertaken was to arrive at an overall percentage increase in the price of textbooks. (LBH)

Hurwitz, Monroe

1976-01-01

180

Automatic Test Factoring for Java  

E-print Network

Test factoring creates fast, focused unit tests from slow system-widetests; each new unit test exercises only a subset of the functionalityexercised by the system test. Augmenting a test suite with factoredunit tests ...

Saff, David

2005-06-08

181

Risk factors for equine laminitis  

E-print Network

logistic regression to assess age, breed, sex, and seasonality as risk factors for equine laminitis. There were 70 acute cases, 183 chronic cases, and 779 controls. No statistical association was found between age, breed, sex, or seasonality...

Polzer, John Patrick

2012-06-07

182

Genetic factors in neuromuscular pain.  

PubMed

Recent evidence suggests that fibromyalgia, a chronic widespread pain condition and related syndromes (chronic fatigue syndrome, irritable bowel syndrome, etc.) may share heritable pathophysiologic features. We review the recent literature on genetic and familial factors found to participate in the pathogenesis of these syndromes, specifically fibromyalgia, including evidence suggesting that serotonin- and dopamine-related genes may play a role in the pathogenesis of these illnesses. The importance of environmental factors triggering these conditions in predisposed individuals is also discussed. PMID:15788956

Buskila, Dan; Neumann, Lily; Press, Joseph

2005-04-01

183

Programming: factors that influence success  

Microsoft Academic Search

This paper documents a study, carried out in the academic year 2003-2004, on fifteen factors that may influence performance on a first year object-oriented programming module. The factors included prior academic experience, prior computer experience, self-perception of programming performance and comfort level on the module and specific cognitive skills. The study found that a student's perception of their understanding of

Susan Bergin; Ronan Reilly

2005-01-01

184

Electrical and Production Load Factors  

E-print Network

ELECTRICAL AND PRODUCTION LOAD FACTORS Tapajyoti Sen Warren M. Heffington Research Assistant Associate Professor Mechanical Engineering Department Industrial Assessment Center Texas A&M University College Station..., the load factor based on production hours (PLF) shows an inverse trend, varying from about 1.4 for one shift operation to 0.8 for around-the-clock operation. The deviations in the mean PLF values were, however, found to be significantly higher than...

Sen, T.; Heffington, W. M.

185

Schemes for Deterministic Polynomial Factoring  

Microsoft Academic Search

In this work we relate the deterministic complexity of factoring polynomials (over finite fields) to certain combinatorial objects, we call m-schemes, that are generaliza- tions of permutation groups. We design a new generalization of the known conditional deterministic subexponential time polynomial factoring algorithm to get an underly- ing m-scheme. We then demonstrate how progress in understanding m-schemes relate to improvements

Gábor Ivanyos; Marek Karpinski; Nitin Saxena

2008-01-01

186

Explaining Economic Growth: Factor Accumulation, Total Factor Productivity Growth, and Production Efficiency Improvement  

E-print Network

Explaining Economic Growth: Factor Accumulation, Total Factor Productivity Growth, and Production factor productivity growth, and production efficiency improvement. In addition, this paper incorporates quality of factors or total factor productivity growth in explaining output growth. The quality of capital

Ahmad, Sajjad

187

Postpartum Psychosis: Risk Factors Identification  

PubMed Central

Background: A better understanding of risk factors associated with postpartum psychosis may contribute to the better management. Aims: This study was to identify the risk factors contributing to postpartum psychosis. Materials and Methods: In this cross-sectional, case control study 100 patients of postpartum psychosis (PP) were compared with the healthy controls. Risk factors explored were sociodemographic factors (age, education, occupation, income, and family type); positive family history; pregnancy and perinatal factors (number of antenatal check-up, parity, and complications during pregnancy, perinatal phase or in newborn); and presence of husband during peripartum period. Data were analyzed by graph pad instat software using chi square test and Fisher's exact test. Results: Total of 64% patients and 42% controls were less than 25 years of age (P = 0.001). Among the patients, 62% were primiparae compared with 46% in the controls (P = 0.02). Per capita family income was less than 5000 INR in 72% patients and 56% controls (P = 0.01). Maternal complications during perinatal period were observed in 38% patients and 22% controls (P = 0.01), while the complications in newborns were seen in 21% patients and 8% controls (P = 0.009). Husband was present in 58% patients and 76% controls. (P = 0.006). Conclusions: The risk factors related to PP were younger age, lower per capita income, perinatal and neonatal complications, and absence of husband in peripartum phase. PMID:25006563

Upadhyaya, Suneet Kumar; Sharma, Archana; Raval, Chintan M

2014-01-01

188

Las fulguraciones como manifestación de reconexión en el campo magnético solar  

NASA Astrophysics Data System (ADS)

Las fulguraciones solares son fenómenos transitorios de liberación de energía que se desarrollan en las estructuras magnéticas de las regiones activas del Sol. Las fulguraciones pueden llegar a liberar hasta 1032 erg en 100 seg. en todo el rango electromagnético, y acelerar partículas. En este trabajo mostramos que la ubicación de los abrillantamientos en H? de diversas fulguraciones está relacionado con las propiedades de las conexiones de las líneas del campo magnético de la región, como se espera por las teorías de reconexión en 3D recientemente desarrolladas (Démoulin et al, 1996a). El campo magnético coronal se extrapola del campo fotosférico observado suponiendo una configuración libre de fuerzas lineal. Por medio de un algoritmo se determinan las regiones donde existe un cambio drástico en la conectividad de las líneas de campo (límites ``cuasi-discontinuos'', o cuasi-separatrices CS). Las CS son bandas abiertas que identifican zonas donde el campo magnético se reconectará con más probabilidad y, siempre que las mismas sean lo suficientemente finas, se producirá allíla liberación de energía proveniente del campo magnético. Hemos encontrado que en todas las regiones fulgurantes estudiadas (Démoulin et al, 1996b) existen CS en los mismos lugares donde se observaron los abrillantamientos en H?. Allídonde coinciden los abrillantamientos con las CS, éstas tienen un espesor menor que 1 Mm. Las líneas de campo coronales extrapoladas de nuestro modelo tienen sus orígenes fotosféricos a ambos lados de las CS, como se espera dados los recientes estudios de reconexión magnética en 3D. Estos resultados ponen a prueba los modelos presentes sobre fulguraciones solares.

Bagalá, L. G.; Mandrini, M. C.; Rovira, M. G.; Démoulin, P.

189

IDC 2009 Papers 3-5 June, 2009 Como, Italy Designing Wiimprovisation for  

E-print Network

]: General---games. General Terms Design, Experimentation, Human Factors Keywords Mediation, video game results suggest that our video game-based virtual instruments indeed support mediation, while enabling Music Therapy with Children Suffering from Behavioral Disorders Samuel Benveniste, Pierre Jouvelot CRI

Boyer, Edmond

190

Factorization for generic jet production  

E-print Network

Factorization is the central ingredient in any theoretical prediction for collider experiments. We introduce a factorization formalism that can be applied to any desired observable, like event shapes or jet observables, for any number of jets and a wide range of jet algorithms in leptonic or hadronic collisions. This is achieved by using soft-collinear effective theory to prove the formal factorization of a generic fully-differential cross section in terms of a hard coefficient, and generic jet and soft functions. In this formalism, whether a given observable factorizes in the usual sense, depends on whether it is inclusive enough, so the jet functions can be calculated perturbatively. The factorization formula for any such observable immediately follows from our general result, including the precise definition of the jet and soft functions appropriate for the observable in question. As examples of our formalism, we work out several results in two-jet production for both e+e- and pp collisions. For the latter, we also comment on how our formalism allows one to treat underlying events and beam remnants.

Christian W. Bauer; Andrew Hornig; Frank J. Tackmann

2008-08-18

191

Factors influencing healthcare service quality  

PubMed Central

Background: The main purpose of this study was to identify factors that influence healthcare quality in the Iranian context. Methods: Exploratory in-depth individual and focus group interviews were conducted with 222 healthcare stakeholders including healthcare providers, managers, policy-makers, and payers to identify factors affecting the quality of healthcare services provided in Iranian healthcare organisations. Results: Quality in healthcare is a production of cooperation between the patient and the healthcare provider in a supportive environment. Personal factors of the provider and the patient, and factors pertaining to the healthcare organisation, healthcare system, and the broader environment affect healthcare service quality. Healthcare quality can be improved by supportive visionary leadership, proper planning, education and training, availability of resources, effective management of resources, employees and processes, and collaboration and cooperation among providers. Conclusion: This article contributes to healthcare theory and practice by developing a conceptual framework that provides policy-makers and managers a practical understanding of factors that affect healthcare service quality. PMID:25114946

Mosadeghrad, Ali Mohammad

2014-01-01

192

Tissue factor-dependent activation of tritium-labeled factor IX and factor X in human plasma  

SciTech Connect

A comparism was made of the tissue factor-dependent activation of tritium-labeled factor IX and factor X in a human plasma system and a study was made of the role of proteases known to stimulate factor VII activity. Plasma was defibrinated by heating and depleted of its factors IX and X by passing it through antibody columns. Addition of human brain thromboplastin, Ca2+, and purified 3H-labeled factor X to the plasma resulted, after a short lag, in burst-like activation of the factor X, measured as the release of radiolabeled activation peptide. The progress of activation was slowed by both heparin and a specific inhibitor of factor Xa but factor X activation could not be completely abolished by such inhibitors. In the case of 3H-factor IX activation, the rate also increased for approximately 3 min after addition of thromboplastin, but was not subsequently curtailed. A survey of proteases implicated as activators of factor VII in other settings showed that both factor Xa and factor IXa could accelerate the activation of factor IX. However, factor Xa was unique in obliterating activation when present at concentrations greater than approximately 1 nM. Heparin inhibited the tissue factor-dependent activation of factor IX almost completely, apparently through the effect of antithrombin on the feedback reactions of factors Xa and IXa on factor VII. These results suggest that a very tight, biphasic control of factor VII activity exists in human plasma, which is modulated mainly by factor Xa. At saturation of factor VIIa/tissue factor, factor IX activation was significantly more rapid than was previously found in bovine plasma under similar conditions. The activation of factor X at saturation was slightly more rapid than in bovine plasma, despite the presence of heparin.

Morrison, S.A.; Jesty, J.

1984-06-01

193

Making a tooth: growth factors, transcription factors, and stem cells  

Microsoft Academic Search

Mammalian tooth development is largely dependent on sequential and reciprocal epithelial-mesenchymal interactions. These processes involve a series of inductive and permissive interactions that result in the determination, differentiation, and organization of odontogenic tissues. Multiple signaling molecules, including BMPs, FGFs, Shh, and Wnt proteins, have been implicated in mediating these tissue interactions. Transcription factors participate in epithelial-mesenchymal interactions via linking the

Yan Ding ZHANG; Zhi CHEN; Yi Qiang SONG; Chao LIU; Yi Ping CHEN

2005-01-01

194

Establishing Factor Validity Using Variable Reduction in Confirmatory Factor Analysis.  

ERIC Educational Resources Information Center

Using a 21-statement attitude-type instrument, an iterative procedure for improving confirmatory model fit is demonstrated within the context of the EQS program of P. M. Bentler and maximum likelihood factor analysis. Each iteration systematically eliminates the poorest fitting statement as identified by a variable fit index. (SLD)

Hofmann, Rich

1995-01-01

195

Impact beyond the impact factor.  

PubMed

The journal impact factor is an annually calculated number for each scientific journal, based on the average number of times its articles published in the two preceding years have been cited. It was originally devised as a tool for librarians and publishers to provide information about the citation performance of a journal as a whole, but over the last few decades it has increasingly been used to assess the quality of specific articles and the research performance of individual investigators, institutions, and countries. In addition to this clear abuse of the journal impact factor, several conceptual and technical issues limit its usability as a measure of journal reputation, especially when journals are compared across different fields. An author's decision regarding the suitability of a scholarly journal for publication should, therefore, be based on the impact that this journal makes in the field of research, rather than on the journal impact factor. PMID:24264238

Zupanc, Günther K H

2014-02-01

196

[Success factors in hospital management].  

PubMed

The hospital environment of most Western countries is currently undergoing dramatic changes. Competition among hospitals is increasing, and economic issues have become decisive factors for the allocation of medical care. Hospitals therefore require management tools to respond to these changes adequately. The balanced scorecard is a method of enabling development and implementation of a business strategy that equally respects the financial requirements, the needs of the customers, process development, and organizational learning. This method was used to derive generally valid success factors for hospital management based on an analysis of an academic hospital in Switzerland. Strategic management, the focus of medical services, customer orientation, and integration of professional groups across the hospital value chain were identified as success factors for hospital management. PMID:10023551

Heberer, M

1998-12-01

197

Isospectral potentials from modified factorization  

NASA Astrophysics Data System (ADS)

Factorization of quantum-mechanical potentials has a long history extending back to the earliest days of the subject. In the present article, the nonuniqueness of the factorization is exploited to derive new isospectral nonsingular potentials. Many one-parameter families of potentials can be generated from known potentials using a factorization that involves superpotentials defined in terms of excited states of a potential. For these cases an operator representation is available. If ladder operators are known for the original potential, then a straightforward procedure exists for defining such operators for its isospectral partners. The generality of the method is illustrated with a number of examples which may have many possible applications in atomic and molecular physics.

Berger, Micheal S.; Ussembayev, Nail S.

2010-08-01

198

Isospectral Potentials from Modified Factorization  

E-print Network

Factorization of quantum mechanical potentials has a long history extending back to the earliest days of the subject. In the present paper, the non-uniqueness of the factorization is exploited to derive new isospectral non-singular potentials. Many one-parameter families of potentials can be generated from known potentials using a factorization that involves superpotentials defined in terms of excited states of a potential. For these cases an operator representation is available. If ladder operators are known for the original potential, then a straightforward procedure exists for defining such operators for its isospectral partners. The generality of the method is illustrated with a number of examples which may have many possible applications in atomic and molecular physics.

Micheal S. Berger; Nail S. Ussembayev

2010-08-09

199

Common Risk Factors in Currency Markets  

E-print Network

We identify a “slope” factor in exchange rates. High interest rate currencies load more on this slope factor than low interest rate currencies. This factor accounts for most of the cross-sectional variation in average ...

Roussano, Nikolai

200

43 CFR 10005.19 - Decision factors.  

Code of Federal Regulations, 2011 CFR

...project responds to the decision factors. The Commission's decision factors and standards...follows: (a) Decision Factor 1: Benefits...aquatic or riparian systems, especially through...compatible with, and support, the...

2011-10-01

201

40 CFR 1033.245 - Deterioration factors.  

Code of Federal Regulations, 2010 CFR

...Determine deterioration factors as described in this...with an engineering analysis, with pre-existing...base the deterioration factor. (2) If you determine your deterioration factors based on engineering analysis, explain why...

2010-07-01

202

What Are Coronary Heart Disease Risk Factors?  

MedlinePLUS

... from the NHLBI on Twitter. What Are Coronary Heart Disease Risk Factors? Coronary heart disease risk factors are conditions or habits that raise your risk of coronary heart disease (CHD) and heart attack . These risk factors also ...

203

Solving Quadratic Equations by Factoring  

NSDL National Science Digital Library

This video explains how to solve quadratic equations with the factoring method. In 4 minutes 23 seconds, the two narrators explain in detail the steps required. Additionally, how these equations relate to objects and events in the real world such as roller coasters is covered.

2012-08-06

204

EFFICIENT STRUCTURED MULTIFRONTAL FACTORIZATION FOR ...  

E-print Network

result from the hierarchical factorization of a tree-structured HSS matrix in a ..... Uj and Vj are called basis matrices since the columns of Uj and the rows of V T j form ...... level ls of the assembly tree T , not only to avoid small block operations,.

2013-03-21

205

Factors Related to Group Cohesiveness.  

ERIC Educational Resources Information Center

Investigated the relationship of group cohesiveness to empathy, self-disclosure, acceptance, and trust, and compared three different groups (personal growth, driving under the influence, psychotherapy), with a total of 65 subjects, on measures of cohesiveness. Found all factors correlated significantly with cohesiveness and with one another.…

Roark, Albert E.; Sharah, Hussein S.

1989-01-01

206

RADIOACTIVE FACTORS IN WATER POLLUTION  

Microsoft Academic Search

The introduction of radionuclides into bodies of water as a result of ; nuclear reactor operations is discussed. The off-site water monitoring program ; at the Chalk River Plant of Atomic Energy of Canada is outlined. Factors ; affecting the disposal and measurement of radionuclides in water are considered. ; (P.C.H.);

1962-01-01

207

Prognostic Factors in Hodgkin Lymphoma  

PubMed Central

Hodgkin lymphoma (HL) is among the neoplastic diseases that has the best long-term outcome after cytotoxic treatment. Cure rates approach 80–90%; however, 15–20% of patients will be resistant to therapy (primary refractory) or relapse after treatment. Prognostic factors should help to stratify treatment according to the risk profile and identify patients at risk for failure. Significance of prognostic factors partly depends on the efficacy of the treatments administered, since new effective therapies can variably counterbalance the adverse effects of some unfavorable clinical determinants. As a consequence, some prognostic factors thought to be important in the past may become meaningless when modern successful therapies are used. Therefore, the value of prognostic factors has to be updated periodically, and then adapted to new emerging biomarkers. Besides the prognostic role of PET imaging, tissue and circulating biomarkers, as the number of tumor-infiltrating macrophages, cytokine and chemokine levels and profiling of circulating nucleic acids (DNA and microRNAs) have shown promise. PMID:25045461

Cuccaro, Annarosa; Bartolomei, Francesca; Cupelli, Elisa; Galli, Eugenio; Giachelia, Manuela; Hohaus, Stefan

2014-01-01

208

Yeast transcription factors Kevin Struhl  

E-print Network

Yeast transcription factors Kevin Struhl Harvard Medical School, Boston, USA Studies of yeast Transcriptional regulatory mechanisms are fundamentally similar in eukaryotic organisms from yeasts to humans (for reviews of yeast transcription, see [1,2]). Compo- nents of the chromatin template and the basic RNA

209

FACTORS GOVERNING RETENTION IN COLLEGE.  

ERIC Educational Resources Information Center

INTELLIGENCE, SEX, AND AT LEAST TWO YEARS OF HIGH SCHOOL FOREIGN LANGUAGE STUDY ARE EXAMINED AS FACTORS IN COLLEGE PERSISTENCE. STUDIES OF ACADEMIC SUSPENSIONS AND WITHDRAWALS AFTER THE FRESHMAN YEAR AT ALABAMA POLYTECHNIC INSTITUTE REVEAL THAT (1) THERE IS A HIGH DEGREE OF CORRELATION BETWEEN INTELLIGENCE AND COLLEGE PERSISTENCE, (2) WOMEN ARE…

SKELTON, R.B.

210

Cognitive Factors in Academic Achievement.  

ERIC Educational Resources Information Center

This review explores the factors of cognitive processing, style, and metacognitive organization as they contribute to academic success. Specific discussions consider aspects of short- and long-term memory, including how these affect learning and academic performance, and the keys to attaining long-term memory capability by involving redundancy,…

Cuasay, Peter

1992-01-01

211

Factors Influencing Household Recycling Behavior  

Microsoft Academic Search

To investigate factors encouraging or deterring recycling, telephone interviews were used to study recycling behavior, attitudes, and knowledge of 221 randomly selected adults in a suburban city that had begun a citywide curbside recycling program within the past year. Approximately 40% reported participation in the curbside recycling program, and nearly 20% more claimed that their household had been recycling in

Stuart Oskamp; Maura J. Harrington; Todd C. Edwards; Deborah L. Sherwood; Shawn M. Okuda; Deborah C. Swanson

1991-01-01

212

Critical factors to bioenergy implementation  

Microsoft Academic Search

Barriers to bioenergy technology implementation have received increased attention in recent years. This paper contributes to the identification and analysis of barriers and drivers behind bioenergy market growth, here labelled “critical factors”. It presents a framework for the analysis of both existing and projected bioenergy market potential, using economic concepts and models from transaction cost theory and industrial organization. The

Anders Roos; Robin L. Graham; Bo Hektor; Christian Rakos

1999-01-01

213

Factors Affecting Willingness to Mentor  

ERIC Educational Resources Information Center

The paper presents a survey among 300 employees in Northern Italy to assess the willingness to mentor and identify the factors that affect it. Men and respondents with previous mentoring experience indicate a higher willingness to be a mentor. Willingness is affected by personal characteristics that are perceived as necessary for a mentor and the…

Ghislieri, Chiara; Gatti, Paola; Quaglino, Gian Piero

2009-01-01

214

Synthetic Division and Matrix Factorization  

ERIC Educational Resources Information Center

Synthetic division is viewed as a change of basis for polynomials written under the Newton form. Then, the transition matrices obtained from a sequence of changes of basis are used to factorize the inverse of a bidiagonal matrix or a block bidiagonal matrix.

Barabe, Samuel; Dubeau, Franc

2007-01-01

215

Stress Factors among College Educators.  

ERIC Educational Resources Information Center

Stress factors affecting community college educators in Ontario were determined using a questionnaire survey. The effect of demographic variables (campus location, program types and specialization, gender, age, and years taught at the college) on perceived stress levels were evaluated. Participants rated their present stress levels on a…

Grant, George Farid

216

An introduction to factor graphs  

Microsoft Academic Search

Graphical models such as factor graphs allow a unified approach to a number of key topics in coding and signal processing such as the iterative decoding of turbo codes, LDPC codes and similar codes, joint decoding, equalization, parameter estimation, hidden-Markov models, Kalman filtering, and recursive least squares. Graphical models can represent complex real-world systems, and such representations help to derive

Hans-Andrea Loeliger; ETH Zurich

2004-01-01

217

Psychological Risk Factors in Headache  

PubMed Central

Headache is a chronic disease that occurs with varying frequency and results in varying levels of disability. To date, the majority of research and clinical focus has been on the role of biological factors in headache and headache-related disability. However, reliance on a purely biomedical model of headache does not account for all aspects of headache and associated disability. Using a biopsychosocial framework, the current manuscript expands the view of what factors influence headache by considering the role psychological (i.e., cognitive and affective) factors have in the development, course, and consequences of headache. The manuscript initially reviews evidence showing that neural circuits responsible for cognitive–affective phenomena are highly interconnected with the circuitry responsible for headache pain. The manuscript then reviews the influence cognitions (locus of control and self-efficacy) and negative affect (depression, anxiety, and anger) have on the development of headache attacks, perception of headache pain, adherence to prescribed treatment, headache treatment outcome, and headache-related disability. The manuscript concludes with a discussion of the clinical implications of considering psychological factors when treating headache. PMID:17371358

Nicholson, Robert A.; Houle, Timothy T.; Rhudy, Jamie L.; Norton, Peter J.

2008-01-01

218

Factors Affecting Onset of Puberty  

Microsoft Academic Search

In humans, foetal and early postnatal growth failure may have persistent consequences for growth and pubertal development in later life. During this period, the developing organs are still plastic to change their function, which may have long-lasting effects. At the time of onset of puberty, acute factors may also interfere with pubertal development. Malnutrition, as seen in anorexic patients, and

Henriette A. Delemarre-van de Waal; Silvia C. C. M. van Coeverden; Mia J. T. Engelbregt

2002-01-01

219

Highly parallel sparse Cholesky factorization  

NASA Technical Reports Server (NTRS)

Several fine grained parallel algorithms were developed and compared to compute the Cholesky factorization of a sparse matrix. The experimental implementations are on the Connection Machine, a distributed memory SIMD machine whose programming model conceptually supplies one processor per data element. In contrast to special purpose algorithms in which the matrix structure conforms to the connection structure of the machine, the focus is on matrices with arbitrary sparsity structure. The most promising algorithm is one whose inner loop performs several dense factorizations simultaneously on a 2-D grid of processors. Virtually any massively parallel dense factorization algorithm can be used as the key subroutine. The sparse code attains execution rates comparable to those of the dense subroutine. Although at present architectural limitations prevent the dense factorization from realizing its potential efficiency, it is concluded that a regular data parallel architecture can be used efficiently to solve arbitrarily structured sparse problems. A performance model is also presented and it is used to analyze the algorithms.

Gilbert, John R.; Schreiber, Robert

1990-01-01

220

Factors influencing solar energy commercialization  

Microsoft Academic Search

The prospects for solar energy commercialization in Arizona are examined. Topics considered include the relative demand potential for selected solar energy products, factors influencing current and future demand for solar energy products, and recommended business and government actions to accelerate commercialization. A Delphi process was used to collect survey data. Water heaters were identified as the solar energy products with

B. J. Walker

1978-01-01

221

Three phase power factor controller  

NASA Technical Reports Server (NTRS)

A power control circuit for a three phase induction motor is described. The power factors for the three phases are summed to provide a control signal. This control signal is particularly filtered and then employed to control the duty cycle of each phase of input power to the motor.

Nola, F. J. (inventor)

1980-01-01

222

Three phase power factor controller  

NASA Technical Reports Server (NTRS)

A power control circuit for a three phase induction motor is described. Power factors for the three phases are summed to provide a control signal, and this control signal is particularly filtered and then employed to control the duty cycle of each phase of input power to the motor.

Nola, F. J. (inventor)

1984-01-01

223

Transfer Factors for Contaminant Uptake  

E-print Network

of supply, upon written request as follows: Address: U.S. Nuclear Regulatory Commission OfficeTransfer Factors for Contaminant Uptake by Fruit and Nut Trees Office of Nuclear Regulatory; licensee event reports; and Commission papers and their attachments. NRC publications in the NUREG series

224

Soft Factors Influence College Enrollment  

ERIC Educational Resources Information Center

Evidence about the role that "soft factors" like student engagement and school environment play in influencing whether high school students go on to enroll in college is hard to come by. Over the past two years, the Center for Labor Market Studies (CLMS) of Northeastern University, with support from the Nellie Mae Education Foundation and the…

Fogg, Neeta P.; Harrington, Paul E.

2010-01-01

225

Neurophysiological Factors in Spatial Development.  

ERIC Educational Resources Information Center

Some of the major lines of investigation that point to neurophysiological factors in spatial skill are presented. These lines include: the two hemispheres of the brain, recent studies, tachistoscopic studies, morphological differences between the cerebral hemispheres, Geschwind and Levitsky's discovery, cerebral dominance re-examined, sex…

Harris, Lauren Jay

226

Human Factors in Electrical Safety  

Microsoft Academic Search

Compliance with regulations or consensus codes and standards is often not sufficient to eliminate the potential for injury or fatality from electrical sources. Recently available data on the scope of electrical incidents underscores the need to revisit the strategic advantages to be gained through implementation of human factors principles across engineering and management processes. This review provides historical, regulatory, and

S. Jamil; A. Golding; H. L. Floyd; M. Capelli-Schellpfeffer

2007-01-01

227

Transforming Rubrics Using Factor Analysis  

ERIC Educational Resources Information Center

Student learning and program effectiveness is often assessed using rubrics. While much time and effort may go into their creation, it is equally important to assess how effective and efficient the rubrics actually are in terms of measuring competencies over a number of criteria. This study demonstrates the use of common factor analysis to identify…

Baryla, Ed; Shelley, Gary; Trainor, William

2012-01-01

228

Heredity Factors in Spatial Visualization.  

ERIC Educational Resources Information Center

Spatial visualization is not yet clearly understood. Some researchers have concluded that two factors or abilities are involved, spatial orientation and spatial visualization. Different definitions and different tests have been proposed for these two abilities. Several studies indicate that women generally perform more poorly on spatial tests than…

Vandenberg, S. G.

229

Text Mining Nonnegative Matrix Factorization  

E-print Network

Factorization (2000) #12;Vector Space Model (1960s and 1970s) Gerard Salton's Information Retrieval System SMART: System for the Mechanical Analysis and Retrieval of Text (Salton's Magical Automatic Retriever of Text Model (1960s and 1970s) Gerard Salton's Information Retrieval System SMART: System for the Mechanical

Kunkle, Tom

230

Pollution, Factor Taxation and Unemployment  

Microsoft Academic Search

When consumers choose between clean and dirty goods and the labour market clears, a green tax reform may not bring about a double dividend in the sense of increasing environmental quality and increasing employment. However, when firms choose between clean and dirty factors of production, and when there is unemployment, such a result is very likely to occur. The paper

Erkki Koskela; Ronnie Schöb; Hans-Werner Sinn

1998-01-01

231

Psychosocial factors and ballet injuries  

Microsoft Academic Search

The purpose of this study was to investigate whether psychosocial factors, such as stress, anxiety, social support, and coping skills, could predict injuries (frequency and duration) among 105 ballet dancers (101 females; 4 males). The dancers were professional ballet dancers (n = 27), university ballet students (n = 19), and ballet institute students (n = 59), with a mean age

Tony Morris; Mark B. Andersen

2005-01-01

232

Form Factors and Vector Mesons  

Microsoft Academic Search

The 2pi and 3pi resonances are re-examined from the point of view that they are vector mesons coupled to conserved currents. The theory of unstable mesons is discussed and formulas are then derived for the emission and propagation of these mesons. The connection with electromagnetic form factors is then given, particularly for the simple case of infinite bare mass. The

Murray Gell-Mann; Fredrik Zachariasen

1961-01-01

233

Organizational Factors in Program Review.  

ERIC Educational Resources Information Center

A conceptual framework is offered for understanding the role of program review in college, particularly a community college. Such a framework should account for the following institutional factors: purpose of the review, stakeholder involvement, leadership support for review, organizational communication, degree of organizational centralization,…

Hoey, J. Joseph, IV

1995-01-01

234

The Environmental Factors Influencing Attrition.  

ERIC Educational Resources Information Center

Offers an economics/business-management perspective on student attrition, focusing on the external macro-environment (including such factors as government funding of education, changing enrollment patterns, and the increased number of postsecondary institutions) and the internal micro-environment (exhibiting characteristics of intangibility,…

Villella, Edward F.

1986-01-01

235

Singlet oxygen inactivates fibrinogen, factor V, factor VIII, factor X, and platelet aggregation of human blood.  

PubMed

Activated polymorphonuclear leukocytes participate in hemostasis. These phagocytes generate up to 5 mmol/l of oxidants of the HOCl- and chloramine-type. The present study shows, for the first time, that physiological concentrations of NaOCl or chloramines act as anticoagulants in human plasma. Prothrombin time, activated partial thromboplastin time, and thrombin time at chloramine concentrations greater than 1 mmol/l are prolonged proportional to the oxidant concentration. Plasmatic coagulation factors sensible to oxidation are fibrinogen, factor V, factor VIII, and factor X with a 50% effective dose of 2-3 mmol/l NaOCl or taurine-chloramine. Chloramines or chloramine-like agents (e.g., chloramine T(R) or vancomycin) also inactivate platelet aggregation (in whole blood or platelet-rich plasma) at an 50% effective dose of about 1.0 mmol. This irreversible oxidation of the hemostasis components is inhibited by addition of methionine, cysteine, ascorbic acid, or azide in 10-fold molar excess prior to oxidation. The oxy-radical inhibitors mannitol, superoxide dismutase, or catalase do not antagonize the action of NaOCl or chloramines. Therefore, the oxidant here involved has reaction characteristics of singlet oxygen (1O(2)), a nonradical, excited (i.e., light-emitting) oxidant. The hemostasis factors sensible to oxidation might dispose of oxidizable, for their function critical, methionine or cysteine residues. In conclusion, blood coagulation factors I, V, VIII, X and thrombocytes are sensible to nonradical oxidants of activated phagocytes. Via 1O(2) generation, polymorphonuclear leukocytes can generate a local pericellular zone of anticoagulation. The data suggest that the cell signal 1O(2) in physiological amounts is an antithrombotic agent. PMID:10704657

Stief, T W; Kurz, J; Doss, M O; Fareed, J

2000-03-15

236

Prognostic factors in prostate cancer.  

PubMed

In the nineteenth century the main goal of medicine was predictive: diagnose the disease and achieve a satisfying prognosis of the patient's chances. Today the effort has shifted to cure the disease. Since the twentieth century, the word prognosis has also been used in nonmedical contexts, for example in corporate finance or elections. The most accurate form of prognosis is achieved statistically. Based on different prognostic factors it should be possible to tell patients how they are expected to do after prostate cancer has been diagnosed and how different treatments may change this outcome. A prognosis is a prediction. The word prognosis comes from the Greek word (see text) and means foreknowing. In the nineteenth century this was the main goal of medicine: diagnose the disease and achieve a satisfying prognosis of the patient's chances. Today the effort has shifted towards seeking a cure. Prognostic factors in (prostate) cancer are defined as "variables that can account for some of the heterogeneity associated with the expected course and outcome of a disease". Bailey defined prognosis as "a reasoned forecast concerning the course, pattern, progression, duration, and end of the disease. Prognostic factors are not only essential to understand the natural history and the course of the disease, but also to predict possible different outcomes of different treatments or perhaps no treatment at all. This is extremely important in a disease like prostate cancer where there is clear evidence that a substantial number of cases discovered by prostate-specific antigen (PSA) testing are unlikely ever to become clinically significant, not to mention mortal. Furthermore, prognostic factors are of paramount importance for correct interpretation of clinical trials and for the construction of future trials. Finally, according to WHO national screening committee criteria for implementing a national screening programme, widely accepted prognostic factors must be defined before assessing screening. PMID:17432552

Braeckman, Johan; Michielsen, Dirk

2007-01-01

237

Pigment epithelium-derived factor as a multifunctional antitumor factor  

Microsoft Academic Search

The design of new therapeutic strategies for cancer treatment is based on the combination of drugs directed against different\\u000a tumor compartments, including the tumor cells themselves and components of the stroma, such as the tumor vasculature. Indeed,\\u000a several antiangiogenic compounds have entered clinical trials for use alone or in combination with conventional cytotoxic\\u000a drugs. Pigment epithelium-derived factor (PEDF) is a

N. I. Fernandez-Garcia; O. V. Volpert; B. Jimenez

2007-01-01

238

Predictors of Multitasking with Media: Media Factors and Audience Factors  

Microsoft Academic Search

In this research, multitasking with media is defined as an audience behavior that combines media use with another non-media activity. This study examines (a) the prevalence and patterns of multitasking among 14- to 16-year-olds and (b) the media and audience factors that predict such behavior. Consistent with previous research, this study found that youth frequently multitask with media. Both (a)

Se-Hoon Jeong; Martin Fishbein

2007-01-01

239

Bootstrap procedures for dynamic factor analysis.  

E-print Network

??Dynamic factor analysis (DFA), a combination of factor analysis and time series analysis, involves autocorrelation matrices calculated from multivariate time series. Because the distribution of… (more)

Zhang, Guangjian

2006-01-01

240

Learning with Matrix Factorizations Nathan Srebro  

E-print Network

Learning with Matrix Factorizations by Nathan Srebro Submitted to the Department of Electrical;Learning with Matrix Factorizations by Nathan Srebro Submitted to the Department of Electrical Engineering

Qiu, Robert Caiming

241

Factors influencing susceptibility to metals.  

PubMed Central

Although the long-neglected field of human susceptibility to environmental toxicants is currently receiving renewed attention, there is only scant literature on factors influencing susceptibility to heavy metals. Genetic factors may influence the availability of sulfhydryl-containing compounds such as glutathione and metallothionein, which modify the distribution and toxicity of certain metals. Age and gender play a role in modifying uptake and distribution, although the mechanisms are often obscure. Concurrent exposure to divalent cations may enhance or reduce the toxicity of certain metals through competition for receptor-mediated transport or targets. Increasing use of biomarkers of exposure should greatly increase our understanding of the underlying distribution of susceptibility to various environmental agents. PMID:9255566

Gochfeld, M

1997-01-01

242

Factors influencing pacing in triathlon  

PubMed Central

Triathlon is a multisport event consisting of sequential swim, cycle, and run disciplines performed over a variety of distances. This complex and unique sport requires athletes to appropriately distribute their speed or energy expenditure (ie, pacing) within each discipline as well as over the entire event. As with most physical activity, the regulation of pacing in triathlon may be influenced by a multitude of intrinsic and extrinsic factors. The majority of current research focuses mainly on the Olympic distance, whilst much less literature is available on other triathlon distances such as the sprint, half-Ironman, and Ironman distances. Furthermore, little is understood regarding the specific physiological, environmental, and interdisciplinary effects on pacing. Therefore, this article discusses the pacing strategies observed in triathlon across different distances, and elucidates the possible factors influencing pacing within the three specific disciplines of a triathlon.

Wu, Sam SX; Peiffer, Jeremiah J; Brisswalter, Jeanick; Nosaka, Kazunori; Abbiss, Chris R

2014-01-01

243

Factors influencing pacing in triathlon.  

PubMed

Triathlon is a multisport event consisting of sequential swim, cycle, and run disciplines performed over a variety of distances. This complex and unique sport requires athletes to appropriately distribute their speed or energy expenditure (ie, pacing) within each discipline as well as over the entire event. As with most physical activity, the regulation of pacing in triathlon may be influenced by a multitude of intrinsic and extrinsic factors. The majority of current research focuses mainly on the Olympic distance, whilst much less literature is available on other triathlon distances such as the sprint, half-Ironman, and Ironman distances. Furthermore, little is understood regarding the specific physiological, environmental, and interdisciplinary effects on pacing. Therefore, this article discusses the pacing strategies observed in triathlon across different distances, and elucidates the possible factors influencing pacing within the three specific disciplines of a triathlon. PMID:25258562

Wu, Sam Sx; Peiffer, Jeremiah J; Brisswalter, Jeanick; Nosaka, Kazunori; Abbiss, Chris R

2014-01-01

244

Factors Impacting Decommissioning Costs - 13576  

SciTech Connect

The Electric Power Research Institute (EPRI) studied United States experience with decommissioning cost estimates and the factors that impact the actual cost of decommissioning projects. This study gathered available estimated and actual decommissioning costs from eight nuclear power plants in the United States to understand the major components of decommissioning costs. Major costs categories for decommissioning a nuclear power plant are removal costs, radioactive waste costs, staffing costs, and other costs. The technical factors that impact the costs were analyzed based on the plants' decommissioning experiences. Detailed cost breakdowns by major projects and other cost categories from actual power plant decommissioning experiences will be presented. Such information will be useful in planning future decommissioning and designing new plants. (authors)

Kim, Karen; McGrath, Richard [Electric Power Research Institute, 3420 Hillview Ave., Palo Alto, California (United States)] [Electric Power Research Institute, 3420 Hillview Ave., Palo Alto, California (United States)

2013-07-01

245

Endometriosis, Angiogenesis and Tissue Factor  

PubMed Central

Tissue factor (TF), is a cellular receptor that binds the factor VII/VIIa to initiate the blood coagulation cascade. In addition to its role as the initiator of the hemostatic cascade, TF is known to be involved in angiogenesis via intracellular signaling that utilizes the protease activated receptor-2 (PAR-2). We now review the physiologic expression of TF in the endometrium and its altered expression in multiple cell types derived from eutopic and ectopic endometrium from women with endometriosis compared with normal endometrium. Our findings suggest that TF might be an ideal target for therapeutic intervention in endometriosis. We have employed a novel immunoconjugate molecule known as Icon and were able to eradicate endometrial lesions in a mouse model of endometriosis without affecting fertility. These findings have major implications for potential treatment in humans. PMID:24278684

Krikun, Graciela

2012-01-01

246

Lifestyle factors and sperm aneuploidy.  

PubMed

Different environmental and lifestyle factors may interfere with the normal disjunction of sister chromatids/chromosomes during meiosis and may cause aneuploidy. The aim of the study was to examine the association between lifestyle factors and sperm aneuploidy. The study population consisted of 212 healthy men under 45 years of age attending an infertility clinic for diagnostic purposes and who had a normal semen concentration of 20-300×10(6)mL or slight oligozoospermia (semen concentration of 15-20×10(6)/mL). All participants were interviewed and provided a semen sample. Sperm aneuploidy was assessed using multicolor FISH (DNA probes specific for chromosomes X, Y, 18, 13, 21). Results from the study suggest that lifestyle factors are related to sperm aneuploidy. A positive relationship was found between coffee drinking everyday and the lack of chromosome X or Y, as well as coffee drinking 1-6 times per week and additional chromosome 18. Wearing boxer shorts decrease the copy number changes in the whole chromosome 18, the number of additional chromosome 18 and the lack of chromosome 13. Additionally, obesity (BMI 30-40 kg/m(2)) was positively associated with additional chromosome 21 after being adjusted for potential confounders. These findings demonstrate that changing the men's lifestyle habits may contribute to reduction of the incidence of sperm aneuploidy. It is necessary that men continue to follow sensible health advice concerning excess weight, coffee drinking and wearing tight fitting underwear. As this is the first such study to examine different lifestyle factors and sperm aneuploidy, the results need to be confirmed on larger population. PMID:25152516

Jurewicz, Joanna; Radwan, Micha?; Sobala, Wojciech; Radwan, Pawe?; Jakubowski, Lucjusz; Hawu?a, Wanda; Ula?ska, Anna; Hanke, Wojciech

2014-09-01

247

Testing factorization of charmonium production  

E-print Network

Within the NRQCD factorization approach the production of heavy quarkonia can be calculated in perturbative QCD in terms of a few production-process-independent NRQCD matrix elements. We test the universality of these long-distance matrix elements by comparing their values as determined from charmonium production at p pbar, e p, and e+ e- colliders, and in Z^0, Upsilon, and B decays.

G. A. Schuler

1998-04-21

248

Background factors in anorexia nervosa  

Microsoft Academic Search

Fifty-one adolescents with anorexia nervosa and 51 sex-, age- and school-matched comparison cases were psychiatrically and physically examined. Twenty-four of the anorexia cases constituted the total population of anorexia nervosa cases born in 1970. The cases were examined at a mean age of 16 years. The mothers were interviewed in detail concerning hereditary and other family factors, child's early physical

Maria Råstam; Christopher Gillberg

1992-01-01

249

Human Factors in Space Exploration  

NASA Technical Reports Server (NTRS)

The exploration of space is one of the most fascinating domains to study from a human factors perspective. Like other complex work domains such as aviation (Pritchett and Kim, 2008), air traffic management (Durso and Manning, 2008), health care (Morrow, North, and Wickens, 2006), homeland security (Cooke and Winner, 2008), and vehicle control (Lee, 2006), space exploration is a large-scale sociotechnical work domain characterized by complexity, dynamism, uncertainty, and risk in real-time operational contexts (Perrow, 1999; Woods et ai, 1994). Nearly the entire gamut of human factors issues - for example, human-automation interaction (Sheridan and Parasuraman, 2006), telerobotics, display and control design (Smith, Bennett, and Stone, 2006), usability, anthropometry (Chaffin, 2008), biomechanics (Marras and Radwin, 2006), safety engineering, emergency operations, maintenance human factors, situation awareness (Tenney and Pew, 2006), crew resource management (Salas et aI., 2006), methods for cognitive work analysis (Bisantz and Roth, 2008) and the like -- are applicable to astronauts, mission control, operational medicine, Space Shuttle manufacturing and assembly operations, and space suit designers as they are in other work domains (e.g., Bloomberg, 2003; Bos et al, 2006; Brooks and Ince, 1992; Casler and Cook, 1999; Jones, 1994; McCurdy et ai, 2006; Neerincx et aI., 2006; Olofinboba and Dorneich, 2005; Patterson, Watts-Perotti and Woods, 1999; Patterson and Woods, 2001; Seagull et ai, 2007; Sierhuis, Clancey and Sims, 2002). The human exploration of space also has unique challenges of particular interest to human factors research and practice. This chapter provides an overview of those issues and reports on sorne of the latest research results as well as the latest challenges still facing the field.

Jones, Patricia M.; Fiedler, Edna

2010-01-01

250

g Factors of subatomic particles  

Microsoft Academic Search

The anomalous g-factors of the muon and electron have played an important role in the development of QED, and in our understanding of the\\u000a nature of these leptons. The current precision of the electron anomaly makes it one of the most precisely measured quantities\\u000a in nature, and one could argue that QED is so well understood that this measurement can

B. Lee Roberts

251

Risk factors for cerebral palsy  

Microsoft Academic Search

Cerebral palsy is a major cause of crippling in children, but it’s etiology is poorly understood. This case control study\\u000a was done to assess some of the identified risk factors for cerebral palsy. 125 cerebral palsy cases selected from hospital\\u000a clinic and 125 age and sex matched neighbourhood controls, all aged less than 5 years and residing in Delhi (India)

Sahu Suvanand; S. K. Kapoor; V. F. Reddaiah; U. Singh; K. R. Sundaram

1997-01-01

252

Circulating Vascular Endothelial Growth Factor  

Microsoft Academic Search

Despite significant advances in early detection and treatment, breast cancer still remains the major cause of cancer-related\\u000a death in women. Many studies suggest a relationship between angiogenesis and breast cancer prognosis. Angiogenesis is the\\u000a complex process leading to the formation of new blood vessels from pre-existing vascular network. The VEGF is the most active\\u000a growth factor involved in angiogenesis; more

Roberta Sarmiento; Roberta Franceschini; Sabrina Meo; Massimo Gion; Raffaele Longo; Giampietro Gasparini

253

Scalable Variational Bayesian Matrix Factorization  

E-print Network

.9175/ 4 0.9217/ 4 0.9314/ 4 0.9431/ 3 Netflix probe10 RMSE/optimal number of epohcs of the BRSIMF(V) Likelihood P(X |U,V) Posterior P(U,V |X) MCMC on Netflix Approximate the posterior by MCMC (Salakhutdinov 12 Element-wisely factorized variational distribution K=100 O((I+J)(K+K2)) O(2(I+J)K) Netflix I = 480

Choi, Seungjin

254

Trefoil factor family domain peptides  

Microsoft Academic Search

Within the past 15 years a new family of peptides has been identified, known as trefoil factor family (TFF) domain peptides;\\u000a they are associated with mucin-secreting epithelial cells and synthesised predominantly in the gastrointestinal tract. They\\u000a share a highly conserved physical structure, and their role in mucosal defence and healing is becoming increasingly clear;\\u000a more recently a tumour suppressor function

G. R. Williams; N. A. Wright

1997-01-01

255

Human factors in waste management  

SciTech Connect

This article examines the role of human factors in radioactive waste management. Although few problems and ergonomics are special to radioactive waste management, some problems are unique especially with long term storage. The entire sociotechnical system must be looked at in order to see where improvement can take place because operator errors, as seen in Chernobyl and Bhopal, are ultimately the result of management errors.

Moray, N. [Univ. of Illinois, Urbana, IL (United States)

1994-10-01

256

Ecological Factors Affecting Community Invasibility  

Microsoft Academic Search

What makes a community invasible? For over a century ecologists have sought to understand the relative importance of biotic\\u000a and abiotic factors that determine community composition. The fact that we are still exploring this topic today hints at both\\u000a its importance and complexity. As the impacts from harmful non-native species accumulate, it has become increasingly urgent\\u000a to find answers to

Suzanne V. Olyarnik; Matthew E. S. Bracken; Jarrett E. Byrnes; A. Randall Hughes; Kristin M. Hultgren; John J. Stachowicz

257

Prognostic Factors in Nasopharyngeal Cancer  

Microsoft Academic Search

\\u000a The prognosis of a cancer depends on the biological aggressiveness of the tumor, the characteristic of the host, and the therapeutic\\u000a interventions. Prognostic factors of nasopharyngeal carcinoma (NPC) have been one of the most important research foci, and\\u000a a large number of investigations in this area have been performed and published. The extent of local invasion, regional lymphatic\\u000a spread, and

Jin-Ching Lin

258

Risk factors for placenta accreta  

Microsoft Academic Search

Objective: To identify risk factors associated with placenta accreta in a large cohort study.Methods: Data for this study came from the Taiwan Down Syndrome Screening Group, an ongoing project on feasibility of serum screening in an Asian population. Women who had serum screening for Down syndrome at 14–22 weeks’ gestation using alpha-fetoprotein (AFP) and free ?-hCG between January 1994 and

Tai-Ho Hung; Wen-Yi Shau; Ching-Chang Hsieh; Tsung-Hong Chiu; Jenn-Jeih Hsu; T’Sang-T’Ang Hsieh

1999-01-01

259

Factor V Leiden and Inflammation  

PubMed Central

Factor V Leiden, is a variant of human factor V (FV), also known as proaccelerin, which leads to a hypercoagulable state. Along these years, factor V Leiden (FVL) has been studied from the pathophysiologic point of view, and research has been focused on finding clinical approaches for the management of the FVL associated to a trombophilic state. Less attention has been paid about the possible role of FVL in inflammatory conditions known to be present in different disorders such as uremia, cirrhosis, liver transplantation, depression as well as sepsis, infection or, inflammatory bowel disease (IBD). Whether platelet FVL will increase the activation of coagulation and/or in which proportion is able to determine the final outcome in the previously mentioned inflammatory conditions is a subject that remains uncertain. This paper will review the association of FVL with inflammation. Specifically, it will analyze the important role of the endothelium and the contribution of other inflammatory components involved at both the immune and vascular levels. This paper will also try to emphasize the importance of being a FVL carrier in associations to diseases where a chronic inflammation occurs, and how this condition may be determinant in the progression and outcome of a specific clinic situation. PMID:22666576

Perez-Pujol, Silvia; Aras, Omer; Escolar, Gines

2012-01-01

260

Tissue Factor Structure and Function  

PubMed Central

Tissue factor (TF) is an integral membrane protein that is essential to life. It is a component of the factor VIIa-TF complex enzyme and plays a primary role in both normal hemostasis and thrombosis. With a vascular injury, TF becomes exposed to blood and binds plasma factor VIIa, and the resulting complex initiates a series of enzymatic reactions leading to clot formation and vascular sealing. Many cells, both healthy, and tumor cells, produce detectable amounts of TF, especially when they are stimulated by various agents. Despite the relative simplicity and small size of TF, there are numerous contradictory reports about the synthesis and presentation of TF on blood cells and circulation in normal blood either on microparticles or as a soluble protein. Another subject of controversy is related to the structure/function of TF. It has been almost commonly accepted that cell-surface-associated TF has low (if any) activity, that is, is “encrypted” and requires specific conditions/reagents to become active, that is, “decrypted.” However there is a lack of agreement related to the mechanism and processes leading to alterations in TF function. In this paper TF structure, presentation, and function, and controversies concerning these features are discussed. PMID:24278763

Butenas, Saulius

2012-01-01

261

On Genetic Algorithms for Boolean Matrix Factorization  

Microsoft Academic Search

Matrix factorization or factor analysis is an important task in the analysis of high dimensional real world data. There are several well known methods and algorithms for factorization of real data but they are rather inefficient when dealing with binary information. In this paper we introduce background and initial version of genetic algorithm for binary matrix factorization.

Václav Snásel; Jan Platos; Pavel Krömer

2008-01-01

262

Tolerance factor for pyrochlores and related structures.  

PubMed

In this work a new empirical tolerance factor for compounds with pyrochlore structure is proposed. This suggested tolerance factor is based on experimental structural data and on the tolerance factors proposed. However, since it does not depend on the structural data, this new tolerance factor permits the prediction of some properties of these compounds directly. Also, a good structure stability field for the pyrochlore formation is observed when this tolerance factor is used. PMID:24056352

Mouta, R; Silva, R X; Paschoal, C W A

2013-10-01

263

Factors Affecting Arctic Weather and Climate  

NSDL National Science Digital Library

The factors discussed in this section are building blocks to understanding arctic weather and climate. Each factor plays an important role alone and in interaction with other factors. The "Arctic Energy Budget" ties all the factors together in a description of the Arctic as a climate system. The different factors are given detailed explanations and examples, and include topics like latitude, land/see distributions, solar radiation, air temperature, Air pressure, winds, humidity, clouds, precipitations, and Arctic energy budgets.

2000-01-01

264

Understanding adverse events: human factors.  

PubMed Central

(1) Human rather than technical failures now represent the greatest threat to complex and potentially hazardous systems. This includes healthcare systems. (2) Managing the human risks will never be 100% effective. Human fallibility can be moderated, but it cannot be eliminated. (3) Different error types have different underlying mechanisms, occur in different parts of the organisation, and require different methods of risk management. The basic distinctions are between: Slips, lapses, trips, and fumbles (execution failures) and mistakes (planning or problem solving failures). Mistakes are divided into rule based mistakes and knowledge based mistakes. Errors (information-handling problems) and violations (motivational problems) Active versus latent failures. Active failures are committed by those in direct contact with the patient, latent failures arise in organisational and managerial spheres and their adverse effects may take a long time to become evident. (4) Safety significant errors occur at all levels of the system, not just at the sharp end. Decisions made in the upper echelons of the organisation create the conditions in the workplace that subsequently promote individual errors and violations. Latent failures are present long before an accident and are hence prime candidates for principled risk management. (5) Measures that involve sanctions and exhortations (that is, moralistic measures directed to those at the sharp end) have only very limited effectiveness, especially so in the case of highly trained professionals. (6) Human factors problems are a product of a chain of causes in which the individual psychological factors (that is, momentary inattention, forgetting, etc) are the last and least manageable links. Attentional "capture" (preoccupation or distraction) is a necessary condition for the commission of slips and lapses. Yet, its occurrence is almost impossible to predict or control effectively. The same is true of the factors associated with forgetting. States of mind contributing to error are thus extremely difficult to manage; they can happen to the best of people at any time. (7) People do not act in isolation. Their behaviour is shaped by circumstances. The same is true for errors and violations. The likelihood of an unsafe act being committed is heavily influenced by the nature of the task and by the local workplace conditions. These, in turn, are the product of "upstream" organisational factors. Great gains in safety can ve achieved through relatively small modifications of equipment and workplaces. (8) Automation and increasing advanced equipment do not cure human factors problems, they merely relocate them. In contrast, training people to work effectively in teams costs little, but has achieved significant enhancements of human performance in aviation. (9) Effective risk management depends critically on a confidential and preferable anonymous incident monitoring system that records the individual, task, situational, and organisational factors associated with incidents and near misses. (10) Effective risk management means the simultaneous and targeted deployment of limited remedial resources at different levels of the system: the individual or team, the task, the situation, and the organisation as a whole. PMID:10151618

Reason, J

1995-01-01

265

Embarazo heterotópico en un ciclo de concepción natural presentado como embarazo ectópico roto. Informe de un caso  

Microsoft Academic Search

Resumen Introducción: El embarazo heterotópico se define como ges- tación intrauterina que coexiste con otra de tipo ectópico. Es una entidad rara, en particular en paciente sin antecedentes de tratamiento contra la infertilidad. El objetivo de esta comuni- cación es informar de una paciente sin antecedente de fertili- zación in vitro o de tratamiento para la fertilidad, quien presen- tó

Karla Elena Domínguez-Meléndez; Héctor Sastré-Gómez; Francisco Higuera-Hidalgo; Armando Vargas-Domínguez; Felipe Rafael Zaldívar-Ramírez

2008-01-01

266

Sediment input and evolution of lacustrine deltas: The Breggia and Greggio rivers case study (Lake Como, Italy)  

Microsoft Academic Search

A high-resolution bathymetric survey is combined with Erosion Potential Method to unravel the spatial and time evolution of the deltas formed by the Breggia and Greggio rivers, in western branch of Lake Como (southern Alps, Italy). This data set provides information on changes in the geometry and depositional centres of these deltas from Holocene to Present. The morphology and structure

Daniela Fanetti; Luigina Vezzoli

2007-01-01

267

Nutritional factors and Alzheimer's disease.  

PubMed

Nutritional factors are integrally linked with Alzheimer's disease (AD). Although AD patients have no changes in energy metabolism, fluctuations in weight are fairly common. The potential role of vitamin B(12) and folate, with the production of hyperhomocysteinemia, in the pathophysiology of AD is explored. The role of free-radical damage in AD is discussed. It is stressed that alterations in dietary lipids may play an important role in cognitive defects in AD secondary to their effects on neuronal membrane lipids. More research is needed on the role of nutrition in the ongoing development of cognitive changes in AD. PMID:11682574

Reynish, W; Andrieu, S; Nourhashemi, F; Vellas, B

2001-11-01

268

Human factors in space telepresence  

NASA Technical Reports Server (NTRS)

The problems of interfacing a human with a teleoperation system, for work in space are discussed. Much of the information presented here is the result of experience gained by the M.I.T. Space Systems Laboratory during the past two years of work on the ARAMIS (Automation, Robotics, and Machine Intelligence Systems) project. Many factors impact the design of the man-machine interface for a teleoperator. The effects of each are described in turn. An annotated bibliography gives the key references that were used. No conclusions are presented as a best design, since much depends on the particular application desired, and the relevant technology is swiftly changing.

Akin, D. L.; Howard, R. D.; Oliveria, J. S.

1983-01-01

269

[Azoospermia factor and male infertility].  

PubMed

Azoospermia factor (AZF) microdeletions of the Y chromosome, which occur in 1 - 55% of infertile men, are closely associated with severe spermatogenic failure and represent the most frequent molecular genetic causes of azoospermia and severe oligozoospermia. Researches on AZF and its related genes, approaching the mechanisms of spermatogenic failure at the molecular level, are of great significance for the diagnosis, treatment and prognosis of male infertility. The detection of AZF microdeletions can provide scientific basis for correct diagnosis and reasonable therapy. This article outlines the structure and functional characteristics of AZF, as well as its relationship with male infertility, cryptorchidism, varicocele, Klinefelter syndrome, seminoma, and recurrent abortion. PMID:20369704

Zhang, Hua-Jun; Jin, Bao-Fang

2010-02-01

270

Transcription factors regulating pituitary development.  

PubMed

This review will address contributions of nuclear transcription factors to the embryologic development and definitive function of the anterior pituitary gland. The HESX1, PITX1, PITX2, PROP1 and POU1F1 genes are of particular interest because of their recognized or potential associations with human disease. Mutations of any of the first three genes produce complex disease phenotypes such as septo-optic dysplasia, Treacher Collins Franceschetti syndrome or Rieger syndrome that may include deficiency of one or more pituitary hormones. Mutations in PROP1 or POU1F1, or their mouse homologous, result in severe hypopituitarism as well as morphological abnormalities of the pituitary gland. PMID:10549299

Parks, J S; Brown, M R

1999-06-01

271

Biographical factors of occupational independence.  

PubMed

The present study examined biographical factors of occupational independence including any kind of nonemployed profession. Participants were 59 occupationally independent and 58 employed persons of different age (M = 36.3 yr.), sex, and profession. They were interviewed on variables like family influence, educational background, occupational role models, and critical events for choosing a particular type of occupational career. The obtained results show that occupationally independent people reported stronger family ties, experienced fewer restrictions of formal education, and remembered fewer negative role models than the employed people. Implications of these results are discussed. PMID:11783553

Müller, G F

2001-10-01

272

Factors affecting outcomes in colonoscopy.  

PubMed

There are many factors that influence successful outcomes in colonoscopy. The aims of this study were to evaluate these factors and determine ways to improve outcomes. All participants (N=229) who underwent planned colonoscopy between July and September 2004 were retrospectively included. Participants included 118 men and 111 women with a mean age of 59 years. Completion rate was 92%. Reasons of failure included poor bowel preparation (2.2%, p< .025), bowel looping (2.2%, p< .025), participant discomfort (1.3%), and obstructing lesion (1.3%). Mean midazolam dose was 3.8 mg. Three participants (1.3%) had midazolam alone, and all had complete colonoscopy. One hundred thirty-three participants (60.7%) had additional meperidine, with a completion rate of 94%. Eighty three participants (37.9%) had additional meperidine and Buscopan, with a completion rate reduced to 89.2%. There was no correlation between sedatives used and completion rate. Completion rate of colonoscopy in our unit was acceptable at 92%. A combination of midazolam and meperidine gave the best completion rates (94%). The two main reasons for incompletion were poor bowel preparation and excessive bowel looping. PMID:18300826

Selehi, Seema; Leung, Edmund; Wong, Ling

2008-01-01

273

[Cerebral palsy: prenatal risk factors].  

PubMed

Prenatal risk factors causing cerebral palsy (CP), here defined as a non-progressive motor abnormality of tone or posture, are much more numerous than once believed, when a great deal of brain injury was attributed to factors surrounding delivery. Scientific advances in genetics and biochemistry, as well as clinical technical advances in, for example, amniotic fluid examination or fetal neuroimaging, has permitted us to find a multiplicity of new etiologies causing neonatal encephalopathy, most of which were formerly attributed to perinatal hypoxia-ischemia. This article reviews an expanded list of etiologies, including asphyxia, which has been found to cause only 6-10% of CP in full term infants, and periventricular leukomalacia, which is associated with 30-50% of CP in premature births. We also review a few of the genetic causes of CP, which lead to metabolic encephalopathies in come cases, to congenital anomalies in others, and sometimes to both. We discuss maternal gestational or intrapartum infections which may affect the fetus by direct in utero contagion or by other less direct means. Inborn metabolic errors affecting the fetus, such as diabetes, are touched on, as are the effects of maternal medications or recreational drugs on the fetus. Finally, we briefly cite the curious phenomenon occurring in multiple births, namely the potential of CP in the surviving infant or infants were the others have died in utero. PMID:12938060

Pascual, J M; Koenigsberger, M R

274

Transforming growth factor-? and fibrosis  

PubMed Central

Transforming growth factor-? (TGF-?), a prototype of multifunctional cytokine, is a key regulator of extracellular matrix (ECM) assembly and remodeling. Specifically, TGF-? isoforms have the ability to induce the expression of ECM proteins in mesenchymal cells, and to stimulate the production of protease inhibitors that prevent enzymatic breakdown of the ECM. Elevated TGF-? expression in affected organs, and subsequent deregulation of TGF-? functions, correlates with the abnormal connective tissue deposition observed during the onset of fibrotic diseases. During the last few years, tremendous progress has been made in the understanding of the molecular aspects of intracellular signaling downstream of the TGF-? receptors. In particular, Smad proteins, TGF-? receptor kinase substrates that translocate into the cell nucleus to act as transcription factors, have been studied extensively. The role of Smad3 in the transcriptional regulation of typeIcollagen gene expression and in the development of fibrosis, demonstrated both in vitro and in animal models with a targeted deletion of Smad3, is of critical importance because it may lead to novel therapeutic strategies against these diseases. This review focuses on the mechanisms underlying Smad modulation of fibrillar collagen expression and how it relates to fibrotic processes. PMID:17589920

Verrecchia, Franck; Mauviel, Alain

2007-01-01

275

Molecular Complementarity of Yeast Glycoprotein Mating Factors  

PubMed Central

Cell fusion between opposite mating types 5 and 21 of the yeast Hansenula wingei is initiated by a strong sexual agglutination reaction. The mating factors responsible for the specificity of cellular recognition are complementary glycoproteins which form a physical complex in vitro. The complex is assayed by recovery of agglutination activity of the multivalent 5-factor after the univalent 21-factor has been inactivated by treatment of the complex with alkali. The 5-factor·21-factor complex, purified on Sepharose 6B, is large (several million daltons) and heterogeneous. The three peaks of 5-factor activity contain a number of combining sites proportional to molecular size. PMID:4521055

Crandall, Marjorie; Lawrence, Lawrence M.; Saunders, Robert M.

1974-01-01

276

Molecular complementarity of yeast glycoprotein mating factors.  

PubMed

Cell fusion between opposite mating types 5 and 21 of the yeast Hansenula wingei is initiated by a strong sexual agglutination reaction. The mating factors responsible for the specificity of cellular recognition are complementary glycoproteins which form a physical complex in vitro. The complex is assayed by recovery of agglutination activity of the multivalent 5-factor after the univalent 21-factor has been inactivated by treatment of the complex with alkali. The 5-factor.21-factor complex, purified on Sepharose 6B, is large (several million daltons) and heterogeneous. The three peaks of 5-factor activity contain a number of combining sites proportional to molecular size. PMID:4521055

Crandall, M; Lawrence, L M; Saunders, R M

1974-01-01

277

Factoring Polynomials Any natural number that is greater than 1 can be factored into a product  

E-print Network

Factoring Polynomials Any natural number that is greater than 1 can be factored into a product way to factor polynomials. Degree of a product is the sum of degrees of the factors Let's take a look of the factors equals the degree of the product: 3+5+1+7 = 16. These three examples suggest a general pattern

Wortman, Kevin

278

TUMOR NECROSIS FACTOR IS A SURVIVAL AND PROLIFERATION FACTOR FOR HUMAN MYELOMA CELLS1  

E-print Network

1 TUMOR NECROSIS FACTOR IS A SURVIVAL AND PROLIFERATION FACTOR FOR HUMAN MYELOMA CELLS1 MICHEL Keywords: multiple myeloma, apoptosis, tumor necrosis factor, interleukin-6. Running title: TNF that tumor necrosis factor (TNF-) is also a survival factor for myeloma cell lines, although less potent

Paris-Sud XI, Université de

279

Thrombin Activates Factor XI on Activated Platelets in the Absence of Factor XII  

Microsoft Academic Search

Thrombin can activate factor XI in the presence of dextran sulfate or sulfatides. However, a physiological cofactor for thrombin activation of factor XI has not been identified. We examined this question in a cell-based, tissue factor-initiated model system. In the absence of factor XII, factor XI enhanced thrombin generation in this model. The effect on thrombin generation was reproduced by

Julie A. Oliver; Dougald M. Monroe; Harold R. Roberts; Maureane Hoffman

2010-01-01

280

Taking the Error Term of the Factor Model into Account: The Factor Score Predictor Interval  

ERIC Educational Resources Information Center

The problem of factor score indeterminacy implies that the factor and the error scores cannot be completely disentangled in the factor model. It is therefore proposed to compute Harman's factor score predictor that contains an additive combination of factor and error variance. This additive combination is discussed in the framework of classical…

Beauducel, Andre

2013-01-01

281

Transforming Growth Factor-?1Antisense Modulates the Expression of Hepatocyte Growth Factor\\/Scatter Factor in Keloid Fibroblast Cell Culture  

Microsoft Academic Search

Abnormal wound healing processes can result in hypertrophic scars and keloids. Transforming growth factor-?1 (TGF-?1) and\\u000a hepatocyte growth factor\\/scatter factor (HGF\\/SF) are biphasic growth factor cytokines in physiologic and pathophysiologic\\u000a conditions. Findings have shown TGF-?1 to be pivotal in the formation of keloid tissue. Therefore, neutralizing antibodies\\u000a may allow wound healing without keloid formation. As reported, TGF-?1 is antagonized by

R. Naim; A. Naumann; J. Barnes; A. Sauter; K. Hormann; D. Merkel; W. Aust; T. Braun; M. Bloching

2008-01-01

282

Factors for Bioenergy Market Development  

SciTech Connect

Focusing on the development of the whole bioenergy market rather than isolated projects, this paper contributes to the identification of barriers and drivers behind bioenergy technology implementation. It presents a framework for the assessment of the potentials for bioenergy market growth to be used by decision makers in administration and industry. The conclusions are based on case studies of operating bioenergy markets in Austria, US and Sweden. Six important factors for bioenergy market growth have been identified: (1) Integration with other business, e.g. for biomass procurement, (2) Scale effects of bioenergy market, (3) Competition on bioenergy market, (4) Competition with other business, (5) National policy, (6) Local policy and local opinion. Different applications of the framework are discussed.

Roos, A.; Hektor, B.; Graham, R.L.; Rakos, C.

1998-10-04

283

Child factor in measurement dependability.  

PubMed

A primary consideration in longitudinal growth studies is the identification of growth from error components. While previous research has considered matters of measurement accuracy and reproducibility in detail, few reports have investigated the errors of measurement due to aspects of the physiology and cooperation of the child. The present study directly assesses this source of measurement undependability for the first time. Investigation of total measurement error variance in 925 recumbent length replicates taken over stasis intervals in growth identifies that between 60% and 70% of total measurement unreliability is due to a child factor undependability. Individual differences are significant and longitudinal growth analyses should consider two to three times the technical error of measurement statistic as a reasonable estimate of the total unreliability for any single measurement of an infant's recumbent length. These results raise issues regarding analytic methods as applied to serial growth data. PMID:11400226

Lampl, M; Birch, L; Picciano, M F; Johnson, M L; Frongillo, E A

2001-01-01

284

Radiant-interchange configuration factors  

E-print Network

CONFIGURATION FACTORS FOR TWO DETACHED RECTANGLES (Fig. 2. 6) h~3. 0 a ~ 1. 8 d ~ 1. 8 b ~ 0. 6 m ~ 3. 0 60o METHOD GRAPHICAL- MECHANICAL SIMPSON GRID GAUSSIAN . 089881 . 088996 1. 066 . 257 . 729 15. 07 4. 54 3. 56 PERCENT ) TIME REQUIRED... ~ Y)2e Y02oNY2oPHI oKEY) WRITE (6e8) XQI eXI I o YOI e Yl 1 oXO2 ~ x12o Y02 ~ Y12oPHI oF 8 FORMAT( I HO/I HO ~ 54X e I OHPARAMETERSX1HO o63X ~ I I HCQORDINATES/41XoTHSVRF IACE ~ 3X ~ 4HAXISo5Xo8HSTARTING ~ 3X ~ 8HTERMINAL/J'44XolHlo7Xo1HXeBXeF6o2o...

Reddin, Thomas Edward

2012-06-07

285

Factors affecting rotator cuff healing.  

PubMed

Several studies have noted that increasing age is a significant factor for diminished rotator cuff healing, while biomechanical studies have suggested the reason for this may be an inferior healing environment in older patients. Larger tears and fatty infiltration or atrophy negatively affect rotator cuff healing. Arthroscopic rotator cuff repair, double-row repairs, performing a concomitant acromioplasty, and the use of platelet-rich plasma (PRP) do not demonstrate an improvement in structural healing over mini-open rotator cuff repairs, single-row repairs, not performing an acromioplasty, or not using PRP. There is conflicting evidence to support postoperative rehabilitation protocols using early motion over immobilization following rotator cuff repair. PMID:24806015

Mall, Nathan A; Tanaka, Miho J; Choi, Luke S; Paletta, George A

2014-05-01

286

Manned Mars mission crew factors  

NASA Technical Reports Server (NTRS)

Crew factors include a wide range of concerns relating to the human system and its role in a Mars mission. There are two important areas which will play a large part in determining the crew for a Mars mission. The first relates to the goals and priorities determined for such a vast endeavor. The second is the design of the vehicle for the journey. The human system cannot be separated from the other systems in that vehicle. In fact it will be the human system which drives the development of many of the technical breakthroughs necessary to make a Mars mission successful. As much as possible, the engineering systems must adapt to the needs of the human system and its individual components.

Santy, Patricia A.

1986-01-01

287

Kleptomania and Potential Exacerbating Factors  

PubMed Central

Kleptomania is an impulse control disorder that can cause significant impairment and serious consequences. Often, the condition is kept secret by the patient, and usually help is sought only when confronted by the legal consequences of the impulsive behaviors. Historically, kleptomania has been viewed from a psychodynamic perspective, and the mainstay of treatment has been psychotherapy. Recently, attempts to explain kleptomania within a neuropsychiatric paradigm have highlighted the possible links between mood disorders, addictive behaviors, and brain injury with kleptomania. These associations with kleptomania can be extrapolated to pharmacological strategies that can potentially help in treating kleptomania. A case of kleptomania, which was potentially exacerbated by multiple factors, will be reviewed. Treatment modalities used in this case, including the use of the Yale-Brown Obsessive Compulsive Scale as a surrogate marker to gauge response to treatment, will be discussed. PMID:22132369

2011-01-01

288

The Main Aeromonas Pathogenic Factors  

PubMed Central

The members of the Aeromonas genus are ubiquitous, water-borne bacteria. They have been isolated from marine waters, rivers, lakes, swamps, sediments, chlorine water, water distribution systems, drinking water and residual waters; different types of food, such as meat, fish, seafood, vegetables, and processed foods. Aeromonas strains are predominantly pathogenic to poikilothermic animals, and the mesophilic strains are emerging as important pathogens in humans, causing a variety of extraintestinal and systemic infections as well as gastrointestinal infections. The most commonly described disease caused by Aeromonas is the gastroenteritis; however, no adequate animal model is available to reproduce this illness caused by Aeromonas. The main pathogenic factors associated with Aeromonas are: surface polysaccharides (capsule, lipopolysaccharide, and glucan), S-layers, iron-binding systems, exotoxins and extracellular enzymes, secretion systems, fimbriae and other nonfilamentous adhesins, motility and flagella. PMID:23724321

Tomas, J. M.

2012-01-01

289

Unity power factor switching regulator  

NASA Technical Reports Server (NTRS)

A single or multiphase boost chopper regulator operating with unity power factor, for use such as to charge a battery is comprised of a power section for converting single or multiphase line energy into recharge energy including a rectifier (10), one inductor (L.sub.1) and one chopper (Q.sub.1) for each chopper phase for presenting a load (battery) with a current output, and duty cycle control means (16) for each chopper to control the average inductor current over each period of the chopper, and a sensing and control section including means (20) for sensing at least one load parameter, means (22) for producing a current command signal as a function of said parameter, means (26) for producing a feedback signal as a function of said current command signal and the average rectifier voltage output over each period of the chopper, means (28) for sensing current through said inductor, means (18) for comparing said feedback signal with said sensed current to produce, in response to a difference, a control signal applied to the duty cycle control means, whereby the average inductor current is proportionate to the average rectifier voltage output over each period of the chopper, and instantaneous line current is thereby maintained proportionate to the instantaneous line voltage, thus achieving a unity power factor. The boost chopper is comprised of a plurality of converters connected in parallel and operated in staggered phase. For optimal harmonic suppression, the duty cycles of the switching converters are evenly spaced, and by negative coupling between pairs 180.degree. out-of-phase, peak currents through the switches can be reduced while reducing the inductor size and mass.

Rippel, Wally E. (Inventor)

1983-01-01

290

Genetic risk factors of atherothrombosis.  

PubMed

Atherothrombosis is a preventable and multifaceted pathological disorder whose pathogenesis involves a large number of biological pathways such as lipid and hormonal metabolism, inflammation, and hemostasis. Although it has been known for a long time that atherosclerosis has a sizable hereditary component, research in the field of genetics of cardiovascular disease is still ongoing, with doubts often outweighing certainties. A large amount of evidence gathered so far allows to identify at least 5 potential important pathways that can be specifically targeted by genetic studies-lipoprotein metabolism, inflammation, the renin-angiotensin-aldosterone system, platelet function, blood coagulation, and fibrinolysis. Owing to a large number of published studies that have investigated the role of genetic polymorphisms in the pathogenesis of atherothrombosis and its complications, in this review, we focused on data emerging from meta?analyses. The available evidence suggests that some selected polymorphisms in low?density lipoprotein metabolism, C?reactive protein, and blood coagulation (especially factor V Leiden, prothrombin G20210A polymorphism, and plasminogen activator inhibitor type 1 4G/5G polymorphism) deserve particular attention. Of note, however, it seems implausible that one single polymorphism will add much to the current approach of risk assessment based on conventional risk factors. A paradigm shift would hence be needed in the current approach to the genetics of atherothrombosis, wherein the investigation of entire pathways rather than assessment of single mutations will likely provide more useful information for complex conditions that involve large numbers of genes and are subjected to environmental regulation of gene expression and cellular phenotype. PMID:25072406

Montagnana, Martina; Danese, Elisa; Lippi, Giuseppe

2014-09-30

291

Prognostic factors in prostate cancer  

PubMed Central

Prognostic factors in organ confined prostate cancer will reflect survival after surgical radical prostatectomy. Gleason score, tumour volume, surgical margins and Ki-67 index have the most significant prognosticators. Also the origins from the transitional zone, p53 status in cancer tissue, stage, and aneuploidy have shown prognostic significance. Progression-associated features include Gleason score, stage, and capsular invasion, but PSA is also highly significant. Progression can also be predicted with biological markers (E-cadherin, microvessel density, and aneuploidy) with high level of significance. Other prognostic features of clinical or PSA-associated progression include age, IGF-1, p27, and Ki-67. In patients who were treated with radiotherapy the survival was potentially predictable with age, race and p53, but available research on other markers is limited. The most significant published survival-associated prognosticators of prostate cancer with extension outside prostate are microvessel density and total blood PSA. However, survival can potentially be predicted by other markers like androgen receptor, and Ki-67-positive cell fraction. In advanced prostate cancer nuclear morphometry and Gleason score are the most highly significant progression-associated prognosticators. In conclusion, Gleason score, capsular invasion, blood PSA, stage, and aneuploidy are the best markers of progression in organ confined disease. Other biological markers are less important. In advanced disease Gleason score and nuclear morphometry can be used as predictors of progression. Compound prognostic factors based on combinations of single prognosticators, or on gene expression profiles (tested by DNA arrays) are promising, but clinically relevant data is still lacking. PMID:16759347

Buhmeida, A; Pyrhonen, S; Laato, M; Collan, Y

2006-01-01

292

Human Factors in Intelligence, Surveillance, and Reconnaissance  

E-print Network

Human Factors in Intelligence, Surveillance, and Reconnaissance: Gaps for Soldiers and Technology Recommendations Jonathan Z. Bakdash Human Research and Engineering Directorate U.S. Army Research Laboratory gaps, we use approaches from Human Factors (interactions between humans and technical systems

Preece, Alun

293

Industrial Equipment Demand and Duty Factors  

E-print Network

Demand and duty factors have been measured for selected equipment (air compressors, electric furnaces, injection molding machines, centrifugal loads, and others) in industrial plants. Demand factors for heavily loaded air compressors were near 100...

Dooley, E. S.; Heffington, W. M.

294

Factors affecting leachate quality. Technical note  

SciTech Connect

This technical note describes factors affecting leachate quality for dredged material in confined disposal facilities (CDFs). Factors evaluated include desorption kinetics, sediment concentration, and association of PCBs with soluble and colloidal organic matter.

Brannon, J.M.; Pennington, J.C.; Myers, T.E.; Price, C.B.

1989-12-01

295

Factors Influencing Applying for Urban Principalship.  

ERIC Educational Resources Information Center

Investigated teachers', principals', and superintendents' perspectives on factors that influence, increase, and retain urban principals. Teachers cited discordant relationships between the board, administrators, and teachers, and principals cited salaries commensurate with responsibilities as critical factors. Superintendents perceived elementary…

Cooley, Van E.; Shen, Jianping

2000-01-01

296

Correlation of Seismic Velocities with Earthwork Factors.  

National Technical Information Service (NTIS)

The study was made to determine whether seismic data can be used to obtain satisfactory design earthwork factors for roadway excavation. The study shows an apparent correlation between seismic velocity and earthwork factor for the three metamorphic rock t...

T. Smith, M. McCauley, R. Mearns, K. Baumeister

1972-01-01

297

Correlation of Seismic Velocities with Earthwork Factors.  

National Technical Information Service (NTIS)

The study was made to determine whether seismic data can be used to obtain satisfactory design earthwork factors for roadway excavation. The study shows an apparent correlation between seismic velocity and earthwork factor for the sedimentary rock types e...

T. Smith, M. McCauley, K. Baumeister

1972-01-01

298

Crop Management Factors: What is Important?  

E-print Network

Various management factors, including specific practices and the persistence of those practices over time, can greatly influence farm profitability. Some of those factors are managing for high yield or low production cost, as well as adoption...

Kastens, Terry L.; Dhuyvetter, Kevin C.; Nivens, Heather; Klinefelter, Danny A.

1999-09-29

299

23 CFR 650.707 - Rating factor.  

Code of Federal Regulations, 2013 CFR

...FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION ENGINEERING AND TRAFFIC OPERATIONS BRIDGES, STRUCTURES, AND HYDRAULICS Discretionary Bridge Candidate Rating Factor § 650.707 Rating factor. (a) The following formula is to be...

2013-04-01

300

23 CFR 650.707 - Rating factor.  

Code of Federal Regulations, 2012 CFR

...FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION ENGINEERING AND TRAFFIC OPERATIONS BRIDGES, STRUCTURES, AND HYDRAULICS Discretionary Bridge Candidate Rating Factor § 650.707 Rating factor. (a) The following formula is to be...

2012-04-01

301

23 CFR 650.707 - Rating factor.  

Code of Federal Regulations, 2011 CFR

...FEDERAL HIGHWAY ADMINISTRATION, DEPARTMENT OF TRANSPORTATION ENGINEERING AND TRAFFIC OPERATIONS BRIDGES, STRUCTURES, AND HYDRAULICS Discretionary Bridge Candidate Rating Factor § 650.707 Rating factor. (a) The following formula is to be...

2011-04-01

302

14 CFR 31.43 - Fitting factor.  

Code of Federal Regulations, 2012 CFR

...ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS STANDARDS: MANNED FREE BALLOONS Design Construction § 31.43 Fitting factor...fitting factor need not be used if the joint design is made in accordance with approved...

2012-01-01

303

About Alzheimer's Disease: Risk Factors and Prevention  

MedlinePLUS

... National Alzheimer's Project Act (NAPA) About ADEAR About Alzheimer's Disease: Risk Factors and Prevention We can’t control some risk factors for Alzheimer's disease such as age and genetic profile. But scientists ...

304

What Are the Risk Factors for Neuroblastoma?  

MedlinePLUS

... But these factors usually take many years to influence cancer risk, and they are not thought to play much of a role in childhood cancers, including neuroblastomas. No environmental factors (such as ...

305

7 CFR 652.39 - Mitigating factors.  

Code of Federal Regulations, 2010 CFR

In considering whether to decertify, the period of decertification, and scope of decertification, the deciding official will take into consideration any mitigating factors. Examples of mitigating factors include, but are not limited to the...

2010-01-01

306

14 CFR 31.43 - Fitting factor.  

Code of Federal Regulations, 2011 CFR

...and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS STANDARDS: MANNED FREE BALLOONS Design Construction § 31.43 Fitting factor. (a) A fitting factor of at least 1.15 must be used in...

2011-01-01

307

14 CFR 31.43 - Fitting factor.  

Code of Federal Regulations, 2010 CFR

...and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION AIRCRAFT AIRWORTHINESS STANDARDS: MANNED FREE BALLOONS Design Construction § 31.43 Fitting factor. (a) A fitting factor of at least 1.15 must be used in...

2010-01-01

308

Heart Disease Risk Factors You Can Control  

MedlinePLUS

... and Stroke Heart disease risk factors you can control Did you know? In women, high triglycerides combined ... information on Heart disease risk factors you can control Read more from womenshealth.gov Heart Disease Fact ...

309

Guidelines for Power Factor Improvement Projects  

E-print Network

Power factor is an indication of electrical system efficiency. Low power factor, or low system efficiency, may be due to one or more causes, including lightly loaded transformers, oversized electric motors, and harmonic-generating non-linear loads...

Massey, G. W.

310

Localized shrinkage factors and minimax results  

NASA Technical Reports Server (NTRS)

A condition is derived under which a localized shrinkage factor estimator will be minimax. A specific localized shrinkage factor estimator is described. The nonapplicability of the derived condition to some estimators is shown. Several comments concerning these results are made.

Kostal, H.

1983-01-01

311

Factors Influencing Runoff and Soil Erosion.  

E-print Network

, 1930 FACTORS INFLUENCING RUNOFF AND SOIL EROSION A. B. CONNER R. E. DICKSON D. SCOATES* Throughout .Texas and the Southwest, water is the chief limiting factor in crop production. Soil fertility is .also a limiting factor in some regions... in the storage of water in the soil, favorable growing conditions can be greatly extended and the prob- ability of good production igcreased. Intensity and distribution of the rainfall are important factors to be considered. The slope of the land, the crop...

Conner, A. B. (Arthur Benjamin)

1930-01-01

312

Trophic factors and central nervous system metastasis  

Microsoft Academic Search

To metastasize to the central nervous system (CNS) malignant cells must attach to brain microvessel endothelial cells, respond to brain endothelial cell-derived motility factors, respond to CNS-derived invasion factors and invade the blood-brain barrier (BBB), and finally, respond to CNS survival and growth factors. Trophic factors such as the neurotrophins play an important role in tumor cell invasion into the

Garth L. Nicolson; David G. Menter

1995-01-01

313

Factors Affecting Students' Retention at Kuwait University  

ERIC Educational Resources Information Center

This article addresses the factors that affect students' retention at Kuwait University. Five hundred seventy students participated in the study. A survey of 22 retention factors was designed to measure student perceptions. Students presented their agreement on factors which included: achieving personal aspiration, getting jobs, free-of-charge…

AlKandari, Nabila

2008-01-01

314

Hepatocyte Growth Factor By Alex Brown  

E-print Network

1 Hepatocyte Growth Factor By Alex Brown Nutritional Sciences Molecular Structure and Receptor Type Hepatocyte Growth Factor (HGF) is a glycoprotein which is expressed mainly by fibroblasts and by other non in detail below. Figure 1: Hepatocyte Growth Factor (Mizuno & Nakamura, 2007) #12;2 Figure 2: The tyrosine

Nottingham, University of

315

Nerve Growth Factor/Receptor Complex.  

National Technical Information Service (NTIS)

The invention relates to a complex comprising nerve growth factor (NGF) and tyrosine receptor kinase (trk) proto-oncogene protein and a complex comprising neurotrophic factors, neurotrophin-3 (NT-3) or brain-derived neurotrophic factor (BDNF), and trkB pr...

L. Parada, D. Soppet, D. Kaplan, D. Martin-Zanca

1991-01-01

316

Factors Affecting Transfer of Training in Thailand  

ERIC Educational Resources Information Center

To begin the validation process for the Learning Transfer System Inventory (LTSI) in Thailand, research replicating Holton, Bates, and Ruona's study (2000) was conducted in Thailand. The LTSI was administered to 1,029 employees. Exploratory factor analysis and MANOVA were used to identify factors. A factor structure almost identical to that of…

Yamnill, Siriporn; McLean, Gary N.

2005-01-01

317

Small Business Failure and External Risk Factors  

Microsoft Academic Search

Unlike much of the previous literature, which has generally focused on internal risk factors, this study seeks to explore the impact of macro-economic factors on small business mortality. The results suggest that economic factors appear to be associated with between 30% and 50% of small business failures, depending on the definition of failure used. As expected, failure rates were positively

Jim Everett; John Watson

1998-01-01

318

Factors Impacting the Child with Behavioral Inhibition  

ERIC Educational Resources Information Center

Various factors influence the developmental course of the behaviorally inhibited child. These factors include reciprocating, contextual factors, such as the child's own traits, the environment, the maternal characteristics, and the environment. Behaviorally inhibited children show physiological and behavioral signs of fear and anxiety when…

Hornbuckle, Suzanne R.

2010-01-01

319

Rainbow H-factors Raphael Yuster  

E-print Network

Rainbow H-factors Raphael Yuster Department of Mathematics University of Haifa, Haifa 31905, Israel, a rainbow H-subgraph of G is an H-subgraph of G whose edges have distinct colors. A rainbow H-factor is an H-factor whose components are rainbow H-subgraphs. The follow- ing result is proved. If H is any fixed graph

Yuster, Raphael

320

Prime Factorization in the Duality Computer  

E-print Network

We give algorithms to factorize large integers in the duality computer. We provide three duality algorithms for factorization based on a naive factorization method, the Shor algorithm in quantum computing, and the Fermat's method in classical computing. All these algorithms are polynomial in the input size.

Wan-Ying Wang; Bin Shang; Chuan Wang; Gui Lu Long

2006-07-04

321

A Second Generation Nonlinear Factor Analysis.  

ERIC Educational Resources Information Center

Nonlinear common factor models with polynomial regression functions, including interaction terms, are fitted by simultaneously estimating the factor loadings and common factor scores, using maximum likelihood and least squares methods. A Monte Carlo study gives support to a conjecture about the form of the distribution of the likelihood ratio…

Etezadi-Amoli, Jamshid; McDonald, Roderick P.

1983-01-01

322

Gm Factors in Non-Human Primates.  

National Technical Information Service (NTIS)

Eighteen different primate species have been typed for Gm factors present at the human gamma 2b and gamma 2c loci. Gm factors are absent in lower primates. The Gm factors, associated with gamma 2c molecules, evolve first in the Cercopithecoidea species. G...

E. Van Loghem, J. Shuster, H. H. Fudenberg

1968-01-01

323

Comparing Factor Structures of Adolescent Psychopathology  

Microsoft Academic Search

Research on the structure of adolescent psychopathology can provide information on broad factors that underlie different forms of maladjustment in youths. Multiple studies from the literature on adult populations suggest that 2 factors, Internalizing and Externalizing, meaningfully comprise the factor structure of adult psychopathology (e.g., Krueger, 1999) and presumably represent broad vulnerability for co-occurring disorders. Though this research was partially

Edelyn Verona; Shabnam Javdani; Jenessa Sprague

2011-01-01

324

Configurations of Common Childhood Psychosocial Risk Factors  

ERIC Educational Resources Information Center

Background: Co-occurrence of psychosocial risk factors is commonplace, but little is known about psychiatrically-predictive configurations of psychosocial risk factors. Methods: Latent class analysis (LCA) was applied to 17 putative psychosocial risk factors in a representative population sample of 920 children ages 9 to 17. The resultant class…

Copeland, William; Shanahan, Lilly; Costello, E. Jane; Angold, Adrian

2009-01-01

325

Factors influencing quality online learning experiences  

Microsoft Academic Search

The gradual uptake of online learning as a delivery medium for higher education necessitates a shift in the metrics used to determine quality and success. While the attributes that have typically been used as benchmarks for quality in learning remain the same, that factors that impact on these factors have changed and it is these factors that form the focus

Ron Oliver; Janice Herrington

2003-01-01

326

Term Structure Dynamics with Macroeconomic Factors  

E-print Network

specifications, and the number of latent factors. Next, I incorporate latent macro factors and the spread factor between the short-term Treasury yield and the federal funds rate into an affine term structure model by imposing cross-equation restrictions from no...

Park, Ha-Il

2011-02-22

327

Journal influence factors6 Massimo Franceschet  

E-print Network

Journal influence factors6 Massimo Franceschet Department of Mathematics and Computer Science of journal influence, namely 2- year impact factor, 5-year impact factor, eigenfactor and article influence. These indicators have been recently added by Thomson Reuters to the Journal Citation Reports, in both science

Franceschet, Massimo

328

ESTIMATING UNCERTAINITIES IN FACTOR ANALYTIC MODELS  

EPA Science Inventory

When interpreting results from factor analytic models as used in receptor modeling, it is important to quantify the uncertainties in those results. For example, if the presence of a species on one of the factors is necessary to interpret the factor as originating from a certain ...

329

Comparing Factor Structures of Adolescent Psychopathology  

ERIC Educational Resources Information Center

Research on the structure of adolescent psychopathology can provide information on broad factors that underlie different forms of maladjustment in youths. Multiple studies from the literature on adult populations suggest that 2 factors, Internalizing and Externalizing, meaningfully comprise the factor structure of adult psychopathology (e.g.,…

Verona, Edelyn; Javdani, Shabnam; Sprague, Jenessa

2011-01-01

330

Factor Structure of the Group Engagement Measure  

ERIC Educational Resources Information Center

The Group Engagement Measure (GEM) assesses a commonly used, but rarely measured, process in group work. Earlier studies examined the reliability and validity of the GEM, but none empirically examined its factor structure. The authors examined the seven-factor, 37-item structure of the GEM, using confirmatory factor analysis involving a combined…

Macgowan, Mark J.; Newman, Frederick L.

2005-01-01

331

Mac Lane and Factorization Walter Tholen  

E-print Network

Mac Lane and Factorization Walter Tholen York University, Toronto June 15, 2006 Walter Tholen (York University, Toronto) Mac Lane and Factorization CT2006 1 / 31 #12;Walter Tholen (York University, Toronto) Mac Lane and Factorization CT2006 2 / 31 #12;Saunders Mac Lane Duality for groups Bulletin

Tholen, Walter

332

Operational readiness and the human factors environment  

Microsoft Academic Search

Personnel readiness as it applies to hardware, procedures, and management controls is defined. Task performance factors and interface factors that affect operational organizations and developmental programs are presented. Operational readiness, as far as personnel are concerned in the industrial and aerospace industry, is affected by human factors such as physiological, psychological, and environmental. Plant hardware, procedures, and management control are

Klinestiver

1982-01-01

333

Factors Explaining Faculty Technology Use and Productivity  

ERIC Educational Resources Information Center

This study examines factors related to technology use in teaching by university faculty. An EFA analysis of multiple questions of technology use in the classroom found two factors: one loaded with Web use and the second with email use. Therefore, three research questions were asked: What factors explain faculty use of the Web or email? Are these…

Xu, Yonghong; Meyer, Katrina A.

2007-01-01

334

FONTE -Factorizing ONTology Engineering complexity Jorge Santos  

E-print Network

FONTE - Factorizing ONTology Engineering complexity Jorge Santos GECAD - Knowledge Engineering it is difficult to engineer a complex ontology with time, we here consider a method that allows for factorizing the complexity of the engineering process, FONTE (Factor- izing ONTology Engineering complexity). FONTE divides

Staab, Steffen

335

estudio recomendado aquellos pacientes síntomas específicos tales como: dolor extremidades pseudoclaudicación síntomas atípicos. través información espero pueda enriquecer formación quieran leerlos.  

EPA Pesticide Factsheets

Search instead for estudio recomendado aquellos pacientes síntomas específicos tales como: dolor extremidades pseudoclaudicación síntomas atípicos. través información espero pueda enriquecer formación quieran leerlos. ?

336

Review of critical factors for SEA implementation  

SciTech Connect

The implementation process involved in translating Strategic Environmental Assessment (SEA) intention into action is vital to an effective SEA. Many factors influence implementation and thus the effectiveness of an SEA. Empirical studies have identified and documented some factors influencing the implementation of an SEA. This research is fragmented, however, and it is still not clear what are the most critical factors of effective SEA performance, and how these relate to different stages of the implementation process or other contextual circumstances. The paper takes its point of departure in implementation theory. Firstly, we introduce implementation theory, and then use it in practice to establish a more comprehensive model related to the stages in the implementation process. Secondly, we identify the critical factors in order to see how they are related to the different stages of SEA or are more general in character. Finally we map the different critical factors and how they influence the overall results of an SEA. Based on a literature review, we present a comprehensive picture of the critical factors and where they are found in the process. We conclude that most of the critical factors identified are of a more general character influencing the SEA process as such, while only one out of four of these factors relates to the specific stages of the SEA. Based on this mapping we can sketch a picture of the totality of critical factors. In this study 266 notions of critical factors were identified. Seen at the level of notions of critical factors, only 24% of these relate to specific stages while for 76% the critical factors are of a more general nature. These critical factors interact in complex ways and appear in different combinations in different stages of the implementation process so tracing the cause and effect is difficult. The pervasiveness of contextual and general factors also clearly suggests that there is no single way to put SEA into practice. The paper identifies some of the critical factors for effective SEA implementation, but further research is still needed to conclude which factors are more critical than others, just as the contingencies on which they depend are not easy to unravel. - Highlights: Black-Right-Pointing-Pointer The research on critical factors influencing SEA implementation is fragmented. Black-Right-Pointing-Pointer The critical factors are used to discuss 'hot-spots' in the implementation process. Black-Right-Pointing-Pointer Critical factors are just as broad as the concept of effectiveness. Black-Right-Pointing-Pointer Both stage and general factors are relevant in explaining the effectiveness of SEA.

Zhang Jie, E-mail: jasmine@plan.aau.dk; Christensen, Per; Kornov, Lone

2013-01-15

337

Human Factors Engineering Standards at NASA  

NASA Technical Reports Server (NTRS)

NASA has begun a new approach to human factors design standards. For years NASA-STD-3000, Manned Systems Integration Standards, has been a source of human factors design guidance for space systems. In order to better meet the needs of the system developers, NASA is revising its human factors standards system. NASA-STD-3000 will be replaced by two documents: set of broad human systems design standards (including both human factors and medical topics) and a human factors design handbook. At the present time the standards document is in final review with some disagreement on several critical issues. The handbook is progressing with November 2008 as the anticipated completion date.

Russo, Dane; Tillman, Barry; Pickett, Lynn

2008-01-01

338

Factors fragmenting the Russian Federation  

SciTech Connect

This paper examines the factors that threaten the future of the Russian Federation (RF). The observations are based on a study that focused on eight republics: Mordova, Udmurtia, Tatarstan, Mari El, Bashkortostan, Kabardino-Balkaria, Buryatia, and Altay Republic. These republics were selected for their geographic and economic significance to the RF. Tatarstan, Bashkortostan, Udmurtia, and Mari El are located on important supply routes, such as the Volga River and the trans-Siberian railroad. Some of these republics are relatively wealthy, with natural resources such as oil (e.g., Tatarstan and Bashkortostan), and all eight republics play significant roles in the military-industrial complex. The importance of these republics to the RF contrasts to the relative insignificance of the independence-minded Northern Caucasus area. The author chose not to examine the Northern Caucasus region (except Kabardino-Balkaria) because these republics may have only a minor impact on the rest of the RF if they secede. Their impact would be minimized because they lie on the frontiers of the RF. Many Russians believe that {open_quotes}it might be best to let such a troublesome area secede.{close_quotes}

Brown, E.

1993-10-06

339

[Dietary factors and metabolic syndrome].  

PubMed

The role of diet in metabolic syndrome (MS) has been studied regarding each one of its components: obesity, high blood pressure, dyslipidemia, and abnormal glucose metabolism. However, few studies evaluated the effects of diet in the presence of MS as a unique independent disease. The aim of this manuscript was to review the role of dietary factors and dietary recommendations for MS. Recently some studies demonstrated that intake of whole-grain foods were negatively associated with MS. Foods with high glycemic index were positively associated with insulin resistance and the prevalence of MS. Following a Mediterranean-style diet caused a reduction in the number of MS components. Also, the adoption of the DASH diet improved the profile of all MS components. A total daily energy intake to obtain and/or to maintain a desirable weight is recommended for patients with MS. The fat content, especially from saturated fat, and cholesterol must be reduced and the intake of whole-grain foods, fruits, and vegetables must be increased. Probably, dietary fibers have an important role in the management of MS. New studies to evaluate the role of diet in the presence and development of MS are needed. PMID:18209884

Steemburgo, Thais; Dall'Alba, Valesca; Gross, Jorge L; Azevedo, Mirela J

2007-12-01

340

Environmental factors in Tourette syndrome.  

PubMed

Environmental exposures during the prenatal period, perinatal stages, and postnatal life may contribute to onset and course of Tourette syndrome (TS). Pregnancy-related noxious exposures may be more frequent in pregnancies of children who will develop TS, particularly maternal smoking and prenatal life stressors. Lower birth weight and use of forceps at delivery may be associated with tic severity in the offspring; moreover, low birth weight and maternal smoking during pregnancy may affect the risk of co-morbid attention-deficit/hyperactivity and obsessive-compulsive disorders. Group A streptococcal infections as risk-modifier for TS has not been convincingly demonstrated to date, although an interaction with stressors was suggested. The PANDAS hypothesis is currently undergoing a nosological revision. Only limited anecdotal evidence supports a link of TS to other pathogens. Nevertheless, the relationship between infections and TS may be complex. Recent data point to intrinsically altered immune regulation in TS, which might predispose to both infections and autoimmune mechanisms; however, evidence of cell-mediated and antibody-mediated autoimmunity in TS is still insufficient. Psychosocial stress remains the most important contextual factor influencing tic severity, as confirmed by prospective studies. This might in part be related to enhanced reactivity of the stress response in TS patients, the mechanisms of which need to be explored further. New studies on large prospective cohorts of patients of different age and the identification of reliable biomarkers or endophenotypes indicating early, prenatal exposure to environmental insults are needed. PMID:23092654

Hoekstra, Pieter J; Dietrich, Andrea; Edwards, Mark J; Elamin, Ishraga; Martino, Davide

2013-07-01

341

FACTORS CONTROLLING SERUM ?-GLOBULIN CONCENTRATION  

PubMed Central

Both synthetic and catabolic processes determine the serum ?-globulin level. The rate of ?-globulin synthesis appears to be the primary factor determining the amount of serum ?-globulin. Increase of ?-globulin synthesis (as may occur following immunization or development of plasma cell tumor) elevates the serum ?-globulin level. This, in turn, accelerates the fractional rate of ?-globulin catabolism. The change in catabolic rate reduces the dimensions of the serum change from that which would occur if synthesis alone determined the serum ?-globulin level. The present studies indicate the existence of a homeostatic mechanism controlling the rate of ?-globulin catabolism. The mechanisms of ?-globulin catabolism are specific and selective. Marked serum increase of other immunoglobulin components (?2A-globulins and ?1-macroglobulins) do not accelerate ?-globulin catabolism. Similarly, serum albumin increases do not influence ?-globulin catabolism. The site determining ?-globulin catabolism is restricted to a part of the ?-globulin molecule; i.e., on the F piece obtained by papain digestion and, by inference, on the H chains obtained by reduction and alkylation of ?-globulin molecules. PMID:14087625

Fahey, John L.; Robinson, Alan G.

1963-01-01

342

Human factors in agile manufacturing  

SciTech Connect

As industries position themselves for the competitive markets of today, and the increasingly competitive global markets of the 21st century, agility, or the ability to rapidly develop and produce new products, represents a common trend. Agility manifests itself in many different forms, with the agile manufacturing paradigm proposed by the Iacocca Institute offering a generally accepted, long-term vision. In its many forms, common elements of agility or agile manufacturing include: changes in business, engineering and production practices, seamless information flow from design through production, integration of computer and information technologies into all facets of the product development and production process, application of communications technologies to enable collaborative work between geographically dispersed product development team members and introduction of flexible automation of production processes. Industry has rarely experienced as dramatic an infusion of new technologies or as extensive a change in culture and work practices. Human factors will not only play a vital role in accomplishing the technical and social objectives of agile manufacturing. but has an opportunity to participate in shaping the evolution of industry paradigms for the 21st century.

Forsythe, C.

1995-03-01

343

Genetic factors in anxiety disorders.  

PubMed

Presently available clinical genetic studies point to a considerable heritability of anxiety disorders (30-67%), with multiple vulnerability genes such as 5-HT1A, 5-HTT, MAO-A, COMT, CCK-B, ADORA2A, CRHR1, FKBP5, ACE, RGS2/7 and NPSR1 suggested by molecular genetic association studies. These genes have been shown to partially interact with each other as well as with environmental factors to shape the overall disease risk in a complex genetic model. Additionally, recent studies have pointed out the crucial role of epigenetic signatures such as methylation patterns in modifying environmental influences as well as in driving the functional impact of anxiety disorder risk genes. On a systems level, vulnerability genes of anxiety disorders seem to confer some of the disease risk via intermediate phenotypes like behavioral inhibition, anxiety sensitivity or several neurobiological traits such as increased startle reactivity or dysfunctional corticolimbic activity during emotional processing. Finally, first pharmaco- and psychotherapy-genetic studies provide evidence for certain risk genes to confer interindividual variability in response to a pharmacological or psychotherapeutic intervention in anxiety disorders. Genetic research in anxiety disorders will be discussed regarding its potential to foster innovative and individually tailored therapeutic approaches for patients with anxiety disorders. PMID:25225016

Domschke, Katharina; Maron, Eduard

2013-01-01

344

Factors affecting reciprocating compressor performance  

SciTech Connect

A reciprocating compressor is a positive displacement machine and, in principal, its capacity and horsepower can be calculated very easily. In practice, however, several loss mechanisms act to decrease capacity and increase horsepower from the ideal predicted values. Many of these effects are quite difficult to predict accurately and the only effective way of developing reciprocating compressor performance prediction methods is to run a large number of tests on different compressors under different operating conditions. Combined with an understanding of the physics controlling the losses, experimental results allow good empirical models of losses to be developed. However, without the benefit of a good understanding of the physics of the loss mechanisms, it is impossible to interpret test results. Some factors affecting the magnitude of losses are compressor design, compressor speed, suction and discharge pressure and temperature, gas composition, suction and discharge piping design, and valve design. Losses that are important in some applications may be negligible in others so it is essential that a wide range of compressor designs, valve designs, gas molecular weight and operating conditions be tested when developing a performance prediction model. The paper discusses the effects of clearance and pressure ratio; the primary losses affecting capacity and power, including valve and port pressure loss, valve springing, valve inertia, piston ring leakage, packing leakage, discharge valve leakage, suction valve leakage, pulsations, heat transfer in the suction passage, and heat transfer in the cylinder; heat transfer in compressor cylinders; performance prediction methods; and compressor diagnosis.

Woollatt, D. (Dresser-Rand Co., Painted Post, NY (United States))

1993-06-01

345

Optimizing neurotrophic factor combinations for neurite outgrowth  

NASA Astrophysics Data System (ADS)

Most neurotrophic factors are members of one of three families: the neurotrophins, the glial cell-line derived neurotrophic factor family ligands (GFLs) and the neuropoietic cytokines. Each family activates distinct but overlapping cellular pathways. Several studies have shown additive or synergistic interactions between neurotrophic factors from different families, though generally only a single combination has been studied. Because of possible interactions between the neurotrophic factors, the optimum concentration of a factor in a mixture may differ from the optimum when applied individually. Additionally, the effect of combinations of neurotrophic factors from each of the three families on neurite extension is unclear. This study examines the effects of several combinations of the neurotrophin nerve growth factor (NGF), the GFL glial cell-line derived neurotrophic factor (GDNF) and the neuropoietic cytokine ciliary neurotrophic factor (CNTF) on neurite outgrowth from young rat dorsal root ganglion (DRG) explants. The combination of 50 ng ml-1 NGF and 10 ng ml-1 of each GDNF and CNTF induced the highest level of neurite outgrowth at a 752 ± 53% increase over untreated DRGs and increased the longest neurite length to 2031 ± 97 µm compared to 916 ± 64 µm for untreated DRGs. The optimum concentrations of the three factors applied in combination corresponded to the optimum concentration of each factor when applied individually. These results indicate that the efficacy of future therapies for nerve repair would be enhanced by the controlled release of a combination of neurotrophins, GFLs and neuropoietic cytokines at higher concentrations than used in previous conduit designs.

Deister, C.; Schmidt, C. E.

2006-06-01

346

Crystal Structure of Human Factor VIII: Implications for the Formation of the Factor IXa-Factor VIIIa Complex  

SciTech Connect

Factor VIII is a procofactor that plays a critical role in blood coagulation, and is missing or defective in hemophilia A. We determined the X-ray crystal structure of B domain-deleted human factor VIII. This protein is composed of five globular domains and contains one Ca{sup 2+} and two Cu{sup 2+} ions. The three homologous A domains form a triangular heterotrimer where the A1 and A3 domains serve as the base and interact with the C2 and C1 domains, respectively. The structurally homologous C1 and C2 domains reveal membrane binding features. Based on biochemical studies, a model of the factor IXa-factor VIIIa complex was constructed by in silico docking. Factor IXa wraps across the side of factor VIII, and an extended interface spans the factor VIII heavy and light chains. This model provides insight into the activation of factor VIII and the interaction of factor VIIIa with factor IXa on the membrane surface.

Ngo, J.C.; Huang, M.; Roth, D.A.; Furie, B.C.; Furie, B. (Wyeth); (MBL)

2008-06-03

347

Crystal Structure of Human Factor VIII: Implications for the Formation of the Factor IXa-Factor VIIIa Complex  

SciTech Connect

Factor VIII is a procofactor that plays a critical role in blood coagulation, and is missing or defective in hemophilia A. We determined the X-ray crystal structure of B domain-deleted human factor VIII. This protein is composed of five globular domains and contains one Ca(2+) and two Cu(2+) ions. The three homologous A domains form a triangular heterotrimer where the A1 and A3 domains serve as the base and interact with the C2 and C1 domains, respectively. The structurally homologous C1 and C2 domains reveal membrane binding features. Based on biochemical studies, a model of the factor IXa-factor VIIIa complex was constructed by in silico docking. Factor IXa wraps across the side of factor VIII, and an extended interface spans the factor VIII heavy and light chains. This model provides insight into the activation of factor VIII and the interaction of factor VIIIa with factor IXa on the membrane surface.

Chi Ki Ngo,J.; Huang, M.; Roth, D.; Furie, B.; Furie, B.

2008-01-01

348

[Role of tissue factor in atherothrombosis].  

PubMed

Tissue factor is a key enzyme in coagulation process. It is primary known as a cofactor for factor VIIa-mediated triggering of blood coagulation, which proceeds in a cascade of extracellular reactions. Tissue factor forms a catalytic complex with VIIa and intitiates coagulation by activating factor IX and X, ultimately resulting in thrombin formation. Being a transmembranic glycoprotein it takes a signalling information to another cell activity after endothelium or other tissue damage. Tissue factor plays a pivotal role in blood clotting physiology and pathology especialy in atherothrombosis. Thrombogenic tissue factor on cell-derived microparticles is present in the circulating blood of patients with acute coronary syndromes. Tissue factor is found in adventitia of blood vessels and the lipid core of atherosclerotic plaques (but not in vascular cells contacting directly with blood). Although the molecular mechanisms responsible for these phenomena remain unclear, it is thought that they are brought about by the action of intracellular signaling, resulting in gene transcription and subsequent protein synthesis. By expressing on monocyte or macrofage cell membrane surface it is involved in proinflammatory action and plaque destabilisation. This shifted the emphasis to investigations of what happened on the cell surface, and later to the cell biology of tissue factor and its inducibility in monocytes/macrophages and endothelial cells. Recent studies have suggested that tissue factor also plays non-hemostatic roles in blood vessel development, tumor angiogenesis and metastasis, inflamation. Tissue factor upregulates a number of genes involved in regulation of growth, transcription, and cellular motility, as well as cytokines, makes it possible to suggest a link between the formation of the tissue factor / VIIa complex and the cellular processes. Regulation of tissue factor activity by natural tissue factor pathway inhibitor (synthesized by vascular endothelial cells) or by special drugs is a new insight in thrombosis and vessel reocclusion preventive therapy. Tissue factor concentration in circulating blood has a higher informativity comparing to troponine and CRB values. PMID:14704504

Grybauskas, Pranas

2003-01-01

349

Ephemeral gully: soil control factors  

NASA Astrophysics Data System (ADS)

Soil erosion on hillslopes has been divided traditionally into sheet, rill, and (ephemeral) gully erosion. In sheet erosion, a relatively shallow overland flow acts on a hillslope and removes sediment particles uniformly from the land surface. Usually, rill erosion occur in uncertain points within sloping surfaces, whereas gullies occur in more specific places in the landscapes, i.e., within topographic swales or hollows. So that, current models for prediction of (ephemeral) gully initiation and development rely mainly on topographic factors while soil conditions are almost neglected. However, the assessment of the erodibility of soil materials is essential for analyzing and properly modeling gully erosion. But, despite the wealth of studies to characterize soil vulnerability to (gully) erosion, a universal approach is still lacking. This is due to the complexity of soil conditions and erosion phenomenon and their interactions. A useful and feasible soil characterization for gully erosion prediction at large scale should be based on simple, quick, repeatable and relatively inexpensive tests to perform. This work proposes a methodology for conducting simple tests in the field and laboratory to detect soil conditions prone to gully initiation. This approach for assessing soil erodibility includes the use of vane shear apparatus, penetrometers and a mini-rain simulator as well as some current (modified) laboratory tests for assessing soil crustability and erodibility. A pool of simple soil variables to assess soils prone to gully development is proposed. Among the main variables we have the granulometric composition of the top soil (textural fractions and gravel), organic matter content, soil cohesiveness and relative sensitivity of topsoils for crusting. Our finding may be particularly useful for erosion modelling when gully initiation and development do not largely rely on topographic features but in soil conditions.

Ollobarren, Paul; Giménez, Rafael; Ángel Campo, Miguel; Casalí, Javier

2014-05-01

350

Factoring Polynomials Any natural number that is greater than 1 can be factored into a product  

E-print Network

Factoring Polynomials Any natural number that is greater than 1 can be factored into a product it on faith. Examples. · 4x2 - 12x + 8 can be factored into a product of a number, 4, and two monic linear number that is greater than 1 can be factored into a product of prime numbers. For example 20 = (2

Wortman, Kevin

351

Factor Structure and Invariance Across Gender of the Devereux Early Childhood Assessment Protective Factor Scale  

Microsoft Academic Search

Early childhood social–emotional assessment has traditionally focused on risk factors or psychopathology, and has less frequently examined protective factors that may serve to promote positive developmental outcomes for children. To advance conceptual models that include protective factors as key explanatory constructs, there is a need for quantitative measures of protective factors that are psychometrically sound and function similarly across different

Julia A. Ogg; Tara M. Brinkman; Robert F. Dedrick; John S. Carlson

2010-01-01

352

Reductions of vascular endothelial growth factor and placental growth factor concentrations in severe preeclampsia  

Microsoft Academic Search

Objective: The aim of this study was to determine whether plasma concentrations of vascular endothelial growth factor and placental growth factor are altered in women with severe preeclampsia. Study Design: We performed a case-control study to compare plasma concentrations of vascular endothelial growth factor and placental growth factor between women with severe preeclampsia and normotensive women admitted for delivery. Twenty-one

Jeffrey C. Livingston; Robert Chin; Bassam Haddad; Elizabeth T. McKinney; Robert Ahokas; Baha M. Sibai

2000-01-01

353

Factor Structure of the Penn State Worry QuestionnaireExamination of a Method Factor  

Microsoft Academic Search

The Penn State Worry Questionnaire (PSWQ) was originally designed as a unifactorial measure of pathological trait worry. However, recent studies supported a two-factor solution with positively worded items loading on the first factor and reverse-scored items loading on a second factor. The current study compared this two-factor model to a negative wording method factor solution among college students. A method

Holly Hazlett-Stevens; Jodie B. Ullman; Michelle G. Craske

2004-01-01

354

Factors affecting calculation of L  

NASA Astrophysics Data System (ADS)

A detectable extraterrestrial civilization can be modeled as a series of successive regimes over time each of which is detectable for a certain proportion of its lifecycle. This methodology can be utilized to produce an estimate for L. Potential components of L include quantity of fossil fuel reserves, solar energy potential, quantity of regimes over time, lifecycle patterns of regimes, proportion of lifecycle regime is actually detectable, and downtime between regimes. Relationships between these components provide a means of calculating the lifetime of communicative species in a detectable state, L. An example of how these factors interact is provided, utilizing values that are reasonable given known astronomical data for components such as solar energy potential while existing knowledge about the terrestrial case is used as a baseline for other components including fossil fuel reserves, quantity of regimes over time, and lifecycle patterns of regimes, proportion of lifecycle regime is actually detectable, and gaps of time between regimes due to recovery from catastrophic war or resource exhaustion. A range of values is calculated for L when parameters are established for each component so as to determine the lowest and highest values of L. roadmap for SETI research at the SETI Institute for the next few decades. Three different approaches were identified. 1) Continue the radio search: build an affordable array incorporating consumer market technologies, expand the search frequency, and increase the target list to 100,000 stars. This array will also serve as a technology demonstration and enable the international radio astronomy community to realize an array that is a hundred times larger and capable (among other things) of searching a million stars. 2) Begin searches for very fast optical pulses from a million stars. 3) As Moore's Law delivers increased computational capacity, build an omni-directional sky survey array capable of detecting strong, transient, radio signals from billions of stars. SETI could succeed tomorrow, or it may be an endeavor for multiple generations. We are a very young technology in a very old galaxy. While our own leakage radiation continues to outshine the Sun at many frequencies, we remain detectable to others. When our use of the spectrum becomes more efficient, it will be time to consider deliberate transmissions and the really tough questions: Who will speak for Earth? What will they say?

Ciotola, Mark P.

2001-08-01

355

The Q-factor of flexure membranes  

NASA Astrophysics Data System (ADS)

We report on the intrinsic or material quality factor (Q-factor) of a number of different materials, possible suited for the construction of low loss flexures. Clamped foil flexure membranes made from titanium, a glassy alloy, Cusil and Havar (high strength non-magnetic alloy), as well as monolithic flexure membranes made from titanium, niobium and Marval 18 (maraging) steel, have been tested. The results show that the highest intrinsic Q-factor occurs for monolithic flexure membranes constructed from niobium, with maraging steel also yielding a high intrinsic Q-factor. Other materials tested were shown to be significantly inferior. For a pendulum of mass 10 kg, with a stress safety factor of ? = 0.3, we predict a maximum Q-factor of 3.1×107 for a niobium flexure, and 2.9×106 for a maraging steel flexure.

Baker, M.; Ju, L.; Blair, D. G.

2001-10-01

356

Roles for Growth Factors in Cancer Progression  

NSDL National Science Digital Library

Under physiological conditions, cells receive fate-determining signals from their tissue surroundings, primarily in the form of polypeptide growth factors. Integration of these extracellular signals underlies tissue homeostasis. Although departure from homeostasis and tumor initiation are instigated by oncogenic mutations rather than by growth factors, the latter are the major regulators of all subsequent steps of tumor progression, namely clonal expansion, invasion across tissue barriers, angiogenesis, and colonization of distant niches. Here, we discuss the relevant growth factor families, their roles in tumor biology, as well as the respective downstream signaling pathways. Importantly, cancer-associated activating mutations that impinge on these pathways often relieve, in part, the reliance of tumors on growth factors. On the other hand, growth factors are frequently involved in evolvement of resistance to therapeutic regimens, which extends the roles for polypeptide factors to very late phases of tumor progression and offers opportunities for cancer therapy.

Esther Witsch (Weizmann Institute of Science); Michael Sela (Weizmann Institute of Science); Yosef Yarden (The Weizmann Institute of Science)

2010-04-01

357

Group Factor Analysis for Alzheimer's Disease  

PubMed Central

For any neuroimaging study in an institute, brain images are normally acquired from healthy controls and patients using a single track of protocol. Traditionally, the factor analysis procedure analyzes image data for healthy controls and patients either together or separately. The former unifies the factor pattern across subjects and the latter deals with measurement errors individually. This paper proposes a group factor analysis model for neuroimaging applications by assigning separate factor patterns to control and patient groups. The clinical diagnosis information is used for categorizing subjects into groups in the analysis procedure. The proposed method allows different groups of subjects to share a common covariance matrix of measurement errors. The empirical results show that the proposed method provides more reasonable factor scores and patterns and is more suitable for medical research based on image data as compared with the conventional factor analysis model. PMID:23533539

Cheng, Philip E.; Liou, Michelle

2013-01-01

358

Combined Factor V and VIII Deficiency  

Microsoft Academic Search

This review summarizes current data on the pathomechanisms and new genetic findings of combined factor V and VIII defi- ciency (CF5F8D). Congenital haemorrhagic disorders charac- terized by deficiency of two clotting factors comprise an inter- esting group. Among dual coagulation disorders, CF5F8D is the most common type. For the first time combined factor V and VIII deficiency (F5F8D) was reported

Hassan Mansouritorghabeh Msc

2007-01-01

359

Human Factors Considerations in System Design  

NASA Technical Reports Server (NTRS)

Human factors considerations in systems design was examined. Human factors in automated command and control, in the efficiency of the human computer interface and system effectiveness are outlined. The following topics are discussed: human factors aspects of control room design; design of interactive systems; human computer dialogue, interaction tasks and techniques; guidelines on ergonomic aspects of control rooms and highly automated environments; system engineering for control by humans; conceptual models of information processing; information display and interaction in real time environments.

Mitchell, C. M. (editor); Vanbalen, P. M. (editor); Moe, K. L. (editor)

1983-01-01

360

Stress fractures: Pathophysiology, epidemiology, and risk factors  

Microsoft Academic Search

A stress fracture represents the inability of the skeleton to withstand repetitive bouts of mechanical loading, which results\\u000a in structural fatigue and resultant signs and symptoms of localized pain and tenderness. To prevent stress fractures, an appreciation\\u000a of their risk factors is required. These are typically grouped into extrinsic and intrinsic risk factors. Extrinsic risk factors\\u000a for stress fractures are

Stuart J. Warden; David B. Burr; Peter D. Brukner

2006-01-01

361

Create Prime Factorization Trees with Little Alchemy  

NSDL National Science Digital Library

This lesson plan provides steps for using the open sandbox game Little Alchemy to teach Prime Factorization Trees. Little Alchemy is available as a free download or it can be opened in a webpage. The lesson plans includes a 3-minute video on how to create elements using the game. In addition to students making factor trees they can extend this lesson to write prime factorization in exponential form.

Molfino, Agustin

2013-04-16

362

Erosion—diagnosis and risk factors  

Microsoft Academic Search

Dental erosion is a multifactorial condition: The interplay of chemical, biological and behavioural factors is crucial and\\u000a helps explain why some individuals exhibit more erosion than others. The erosive potential of erosive agents like acidic drinks\\u000a or foodstuffs depends on chemical factors, e.g. pH, titratable acidity, mineral content, clearance on tooth surface and on\\u000a its calcium-chelation properties. Biological factors such

A. Lussi; T. Jaeggi

2008-01-01

363

Human factors and safety in emergency medicine  

NASA Technical Reports Server (NTRS)

A model based on an input process and outcome conceptualisation is suggested to address safety-relevant factors in emergency medicine. As shown in other dynamic and demanding environments, human factors play a decisive role in attaining high quality service. Attitudes held by health-care providers, organisational shells and work-cultural parameters determine communication, conflict resolution and workload distribution within and between teams. These factors should be taken into account to improve outcomes such as operational integrity, job satisfaction and morale.

Schaefer, H. G.; Helmreich, R. L.; Scheidegger, D.

1994-01-01

364

Theoretical maximum concentration factors for solar concentrators  

SciTech Connect

The theoretical maximum concentration factors are determined for different definitions of the factor for two-dimensional and three-dimensional solar concentrators that are valid for any source with nonuniform intensity distribution. Results are obtained starting from those derived by Winston (1970) for Lambertian sources. In particular, maximum concentration factors for three models of the solar-disk intensity distribution are calculated. 12 references.

Nicolas, R.O.; Duran, J.C.

1984-11-01

365

Design and Synthesis of Binding Growth Factors  

PubMed Central

Growth factors play important roles in tissue regeneration. However, because of their instability and diffusible nature, improvements in their performance would be desirable for therapeutic applications. Conferring binding affinities would be one way to improve their applicability. Here we review techniques for conjugating growth factors to polypeptides with particular affinities. Conjugation has been designed at the level of gene fusion and of polypeptide ligation. We summarize and discuss the designs and applications of binding growth factors prepared by such conjugation approaches. PMID:22754349

Tada, Seiichi; Kitajima, Takashi; Ito, Yoshihiro

2012-01-01

366

Human Monocytes Support Factor X Activation by Factor VIIa, Independent of Tissue Factor: Implications for the Therapeutic Mechanism of High-Dose Factor VIIa in Hemophilia  

Microsoft Academic Search

bosis to complicate its use. These complications are seen when preparations of the activated vitamin-K-dependent coagulation proteins, such as Autoplex, are used to treat pa- tients with inhibitors. High-dose factor VIIa therapy has not shown a propensity to initiate DIC or thrombosis in clinical trial^.^ Factor VIIa can activate factor X in vitro in the pres- ence of phospholipid vesicles

Maureane Hoffman; Dougald M. Monroe; Harold R. Roberts

1994-01-01

367

Biotic and Abiotic Factors in Ecosystems  

NSDL National Science Digital Library

Students will research ecosystems and list the biotic and abiotic factors in that ecosystem. As table partners visit the links below, choose 3 of the listed ecosystems and find out what kinds of biotic and abiotic factors are present in each of the ecosystems you picked. Read about each ecosystem, look at any pictures included on the website, and then list 12 factors of each ecosystem in ...

Smith, Mrs.

2010-10-17

368

NASA information sciences and human factors program  

NASA Technical Reports Server (NTRS)

The FY-90 descriptions of technical accomplishments are contained in seven sections: Automation and Robotics, Communications, Computer Sciences, Controls and Guidance, Data Systems, Human Factors, and Sensor Technology.

Holcomb, Lee; Hood, Ray; Montemerlo, Melvin; Jenkins, James; Smith, Paul; Dibattista, John; Depaula, Ramon; Hunter, Paul; Lavery, David

1991-01-01

369

NASA Information Sciences and Human Factors Program  

NASA Technical Reports Server (NTRS)

Fiscal year 1989 descriptions of technical accomplishments in seven sections are presented: automation and robotics; communications; computer sciences; controls and guidance; data systems; human factors; and sensor technology.

Holcomb, Lee; Hood, Ray; Montemerlo, Melvin; Jenkins, James; Smith, Paul; Dibattista, John; Depaula, Ramon; Hunter, Paul

1990-01-01

370

NASA Information Sciences and Human Factors Program  

NASA Technical Reports Server (NTRS)

This report contains FY 1984/85 descriptions and accomplishments in six sections: Computer Science and Automation, Controls and Guidance, Data Systems, Human Factors, Sensor Technology, and Communications.

Holcomb, Lee B.; Mciver, Duncan E.; Dibattista, John D.; Larsen, Ronald L.; Montemerlo, Melvin D.; Wallgren, Ken; Sokoloski, Marty; Wasicko, Dick

1985-01-01

371

Factors influencing applicant ranking of orthodontic programs.  

PubMed

Orthodontic programs spend considerable amounts of effort to attract, recruit, and interview the best and brightest applicants. Applicants and programs submit ranked preferences, and resident positions are filled by a computerized matching system (Match). The specific aims of this study were to determine the relative importance of certain factors in applicants' Match ranking of orthodontic programs and differences between orthodontic program directors' perceptions and actual factors cited by applicants influencing their ranking of orthodontic programs. Surveys were mailed to 55 orthodontic program directors and 478 applicants participating in the 2002 orthodontic Match. Forty-nine program director (89%) and 224 applicant (47%) surveys were returned. Rankings and importance of factors cited by applicants in their decision-making process and perceptions of those factors cited by program directors were compared. Applicants' top three factors were: "satisfied current residents," "multiple techniques taught," and "good quality of clinical facility." Program directors' perceived top three factors were: satisfied current residents, "good program reputation," and "good impression of current residents at interview." Comparing program directors' perceptions vs applicants' factors overall, the two groups were statistically different (P < .0001). Factors that stood out for their differences included: "GRE required or emphasized" (P < .0002), multiple techniques taught (P < .0007), and "good location" (P < .0008). Despite these differences, there was generally a high level of overall agreement between program directors' perceptions and factors actually influencing applicants' ranking of orthodontic programs. PMID:16448274

Lindauer, Steven; Payne, Michael D; Shroff, Bhavna; Tüfekçi, Eser

2006-01-01

372

Factoring Polynomials via Polytopes Fatima Abu Salem  

E-print Network

Factoring Polynomials via Polytopes Fatima Abu Salem Computing Laboratory Oxford University Wolfson sparse bivariate polynomials using their connection to integral polytopes. Fatima Abu Salem is supported

Gao, Shuhong

373

TISSUE FACTOR PATHWAY INHIBITOR: STRUCTURE-FUNCTION  

PubMed Central

An inhibitor of tissue factor-induced coagulation was rediscovered in the 1980’s and subsequently named tissue factor pathway inhibitor (TFPI). Three isoforms of TFPI are transcribed through alternative mRNA splicing: TFPI?, which contains an acidic aminoterminus followed by three tandem Kunitz-type protease inhibitor domains and a basic carboxyterminus; TFPI?, in which the Kunitz-3 and carboxyterminus of TFPI? are replaced with a different carboxyterminus containing a glycosyl phosphatidyl inositol (GPI) anchor; and TFPI?, which is truncated following the Kunitz-2 domain. The microvascular endothelium is thought to be the principal source of TFPI and TFPI? is the predominant isoform expressed in humans. TFPI?, apparently attached to the surface of the endothelium in an indirect GPI-anchor-dependent fashion, represents the greatest in vivo reservoir of TFPI. The Kunitz-2 domain of TFPI is responsible for factor Xa inhibition and the Kunitz-1 domain is responsible for factor Xa-dependent inhibition of the factor VIIa/tissue factor catalytic complex. The anticoagulant activity of TFPI in one-stage coagulation assays is due mainly to its inhibition of factor Xa through a process that is enhanced by protein S and dependent upon the Kunitz-3 and carboxyterminal domains of full-length TFPI?. Carboxyterminal truncated forms of TFPI as well as TFPI? in plasma, however, inhibit factor VIIa/tissue factor in two-stage assay systems. Studies in gene-disrupted mice demonstrate the physiological importance of TFPI. PMID:22201743

Broze, George J.; Girard, Thomas J.

2013-01-01

374

A Two-Factor Model of Temperament  

PubMed Central

The higher order structure of temperament was examined in two studies using the Adult Temperament Questionnaire. Because previous research showed robust levels of convergence between Rothbart’s constructs of temperament and the Big Five factors, we hypothesized a higher order two-factor model of temperament based on Digman’s higher order two-factor model of personality traits derived from factor analysis of the Big Five factors. Study 1 included 258 undergraduates. Digman’s model did not fit the data well, so we conducted an exploratory two-factor solution. One factor included extraversion/positive emotionality, orienting sensitivity, and affiliativeness, and the other, negative affect versus effortful control content. This two-factor model of temperament model diverged from the Digman model only on the agreeableness-affiliativeness loadings. Study 2 involved a community sample of 700 participants. Confirmatory factor analysis supported the alternative model found in Study 1. Findings are discussed in relation to research on attention and emotion. PMID:20161172

Evans, David E.; Rothbart, Mary K.

2009-01-01

375

Bulk Scale Factor at Very Early Universe  

E-print Network

In this paper we propose a higher dimensional Cosmology based on FRW model and brane-world scenario. We consider the warp factor in the brane-world scenario as a scale factor in 5-dimensional generalized FRW metric, which is called as bulk scale factor, and obtain the evolution of it with space-like and time-like extra dimensions. It is then showed that, additional space-like dimensions can produce exponentially bulk scale factor under repulsive strong gravitational force in the empty universe at a very early stage.

M. Mohsenzadeh; E. Yusofi

2010-06-25

376

Nuclear transcription factors in mammalian mitochondria  

Microsoft Academic Search

ABSTRACT: Nuclear transcription factors have been detected in mammalian mitochondria and may directly regulate mitochondrial gene expression. Emerging genomics techniques may overcome outstanding challenges in this field.

Sarah Leigh-Brown; José Antonio Enriquez; Duncan T Odom

2010-01-01

377

Matrix factorization on a hypercube multiprocessor  

SciTech Connect

This paper is concerned with parallel algorithms for matrix factorization on distributed-memory, message-passing multiprocessors, with special emphasis on the hypercube. Both Cholesky factorization of symmetric positive definite matrices and LU factorization of nonsymmetric matrices using partial pivoting are considered. The use of the resulting triangular factors to solve systems of linear equations by forward and back substitutions is also considered. Efficiencies of various parallel computational approaches are compared in terms of empirical results obtained on an Intel iPSC hypercube. 19 refs., 6 figs., 2 tabs.

Geist, G.A.; Heath, M.T.

1985-08-01

378

Factors Contributing to Crashes among Young Drivers  

PubMed Central

Young drivers are the group of drivers most likely to crash. There are a number of factors that contribute to the high crash risk experienced by these drivers. While some of these factors are intrinsic to the young driver, such as their age, gender or driving skill, others relate to social factors and when and how often they drive. This article reviews the factors that affect the risk of young drivers crashing to enable a fuller understanding of why this risk is so high in order to assist in developing effective countermeasures. PMID:25097763

Bates, Lyndel J.; Davey, Jeremy; Watson, Barry; King, Mark J.; Armstrong, Kerry

2014-01-01

379

Exploratory Bi-Factor Analysis: The Oblique Case  

ERIC Educational Resources Information Center

Bi-factor analysis is a form of confirmatory factor analysis originally introduced by Holzinger and Swineford ("Psychometrika" 47:41-54, 1937). The bi-factor model has a general factor, a number of group factors, and an explicit bi-factor structure. Jennrich and Bentler ("Psychometrika" 76:537-549, 2011) introduced an exploratory form of bi-factor

Jennrich, Robert I.; Bentler, Peter M.

2012-01-01

380

Risk factors for thrombosis in Serbian children.  

PubMed

Venous and arterial thromboses are increasingly encountered in the pediatric population. We present results of a case-control study of inherited and acquired risk factors for thrombosis in 129 pediatric patients from the first day of life to 18 years. The aims of study were to determine the importance of thrombophilic risk factors and comorbidity as a cause of thrombosis in children. Single thrombophilic risk factor was found in 24.4% (n?=?21), whereas combined thrombophilic factors were found in 15.1% (n?=?13) patients. A total of 87.2% of the children had recognized thrombophilic risk factors for thrombosis and/or additional comorbid risk factors. The single independent risk factors for thrombosis were mutation of factor V Leiden (P?=?0.021), lupus anticoagulant antibodies (P?=?0.028), and comorbidity (P?=?0.000). Mutation of factor V Leiden [odds ratio (OR), 6.2 (95% confidence interval, CI 1.1-38.1, P?=?0.048] was found to be a risk factor for venous thrombosis. Lupus anticoagulant antibodies were related to both venous (P?=?0.008) and arterial thrombosis (P?=?0.016). The frequency of inherited thrombophilic factors were the same in neonates and adolescents (23%). The prothrombotic gene mutations were present in 18.6% (n?=?8) of asymptomatic children. Our study confirms that thrombosis in children is a multifactorial disorder, and associated most with the underlying medical disease (comorbidity) for vein thrombosis [OR, 18.6 (95% CI 3.7-93.4), P?=?0.000] and for arterial thrombosis [OR, 10.5 (95% CI 2.2-49.9) P?=?0.003]. Inherited thrombophilic disorders contributed to the development of thrombosis in children. PMID:24030120

Serbic-Nonkovic, Olivera M; Kuzmanovic, Milos B; Rakicevic, Ljiljana B; Djordjevic, Valentina J; Veljkovic, Dobrila K; Prijic, Sergej M; Kovacevic, Gordana S; Rakonjac, Zorica M; Kosutic, Jovan Lj; Vujic, Dragana S; Micic, Dragan V; Jankovic, Borisav Z; Radojkovic, Dragica P

2014-01-01

381

Late Glacial to Holocene environmental variabilities: A new multi-proxy paleolimnological study of sedimentary sequences from Como (northern Italy)  

NASA Astrophysics Data System (ADS)

Lake Como (northern Italy) is the deepest Italian lake, reaching a depth of about 425 m. The lambda-shaped lake expands about 45 km in NE-SW direction. Southwards of the hydrologically closed western branch, two sediment cores of 70 m (S1) and 65 m length (S2) were taken in the year 2005 close to the cathedral of Como (Piazza Verdi). The drilling sites are located in the middle of the Southern Alps, some 300 m from the present-day lakeshore. The cores provide the first detailed Late Glacial to Holocene multi-proxy record for the Lake Como basin. Our research is aimed at investigating the environmental and geological evolution of the Insubria Region. The multi-proxy study of the stratigraphic sequences contain geophysical, geotechnical, sedimentological, paleobotanical, and radiocarbon analyses. They have been performed for core S1 and are still in progress on core S2. With this data the working group focuses on two main issues. The first topic is the reconstruction of the natural and anthropogenic processes controlling the ground subsidence in the Como urban area (e.g., Comerci et al., 2007) and another aim is to reconstruct vegetation and land-use dynamics. In particular, 150 samples of vegetal macroremains have been collected in the palustrine deposits along S1 core, down to 31,00 m. Below this depth (dated 14C 12,496 ± 55 yr BP - 15,050 - 14,250 cal yr BP), the amount of plant macroremains in the sediment drops dramatically. The taxonomic determination was carried out on more than 800 macroremains. They are represented by fragments of wood, leaves, needles, seeds, fruits, mosses and tiny charcoals (Motella, 2009, unpublished PhD Thesis). Picea/Larix, Pinus sp., Juniperus with Betula, found in the deeper levels (30.80 - 30.00 m), are the first arboreal taxa that colonized the shores of Lake Como, and show that the reforestation began in this area about 16,000 years ago. During the early Holocene (25.10 m) Abies alba expanded and further upwards the sequence mixed deciduous forests became important. Preliminary results of palynological analyses for a section of the core S2 (35.04 - 18.12 m), show Late Glacial sediments in the depth of 35.04 - 31.16 m, due to vegetation changes related to natural climatic variability, with an alternation of communities typical of cold (Poaceae, Artemisia, Juniperus, Pinus and Betula) and temperate climates (e.g. Quercus). Later, during the Holocene, forests composed by mostly deciduous broadleaves and Abies alba expanded. During the mid and late Holocene human impact increased and modified vegetation. This is shown by the increase of herbs and heliofilous shrubs (26.51 m), typical of deforested spaces for fields and pastures. Human exploitation of wood is represented for example by the dramatic decline of Abies alba (24.97 m). Finally, the increase of Cerealia (19.39 m) is clearly related to intensified agricultural activities. The results of further paleobotanical and geophysical analyses which are in progress will be presented during the conference. Moreover, geochemical measurements (e.g., XRF) will be performed in future for core S2. Researches realized within the project of Italy-Switzerland Cooperation SITINET "Censimento, valorizzazione e messa in rete di siti geologici e archeologici" (Census, increase of value and computerization of geological and archaeological sites). Interreg IV A "Geo-Archeositi dell'Insubria" (Geo-Archaeosites of Insubria).

Höbig, N.; Martinelli, E.; Motella, S.; Michetti, A. M.; Livio, F.; Tinner, W.; Reicherter, K.; Castelletti, L.

2012-04-01

382

Identification and Quantification of Cystic Fibrosis Factors.  

National Technical Information Service (NTIS)

The cystic fibrosis (CF) peptide has been purified to homogeneity and the CF factor to near homogeneity (is less than 95%). The CF factor has a molecular weight of ca. 400 and the CF peptide has a molecular weight of ca. 6800. The isolated cystic fibrosis...

T. E. Nelson

1981-01-01

383

FACTORS AFFECTING AURAL DETECTIONS OF SONGBIRDS  

Microsoft Academic Search

Many factors affect the number of birds detected on point count surveys of breeding songbirds. The magnitude and importance of these factors are not well understood. We used a bird song simulation system to quantify the effects of detection distance, singing rate, species differences, and observer differences on detection probabilities of birds detected by ear. We simulated 40 point counts

Mathew W. Alldredge; Theodore R. Simons; Kenneth H. Pollock

2007-01-01

384

Developmental-Interest Factors Associated with Homosexuality  

ERIC Educational Resources Information Center

This study compared 42 male homosexual college students with heterosexual controls on 19 life experience factors. The factors were developed from a biographical questionnaire and, in turn, were used to develop subgroups homogeneous with respect to previous experience. The homosexuals differed on 8 of the 19 dimensions. The pattern was one…

Lewis, Mary A.; Schoenfeldt, Lyle F.

1973-01-01

385

Family Factors Predicting Categories of Suicide Risk  

ERIC Educational Resources Information Center

We compared family risk and protective factors among potential high school dropouts with and without suicide-risk behaviors (SRB) and examined the extent to which these factors predict categories of SRB. Subjects were randomly selected from among potential dropouts in 14 high schools. Based upon suicide-risk status, 1,083 potential high school…

Randell, Brooke P.; Wang, Wen-Ling; Herting, Jerald R.; Eggert, Leona L.

2006-01-01

386

Risk factors for suicide in later life  

Microsoft Academic Search

Suicide rates are higher in later life than in any other age group. The design of effective suicide prevention strategies hinges on the identification of specific, quantifiable risk factors. Methodological challenges include the lack of systematically applied terminology in suicide and risk factor research, the low base rate of suicide, and its complex, multidetermined nature.Although variables in mental, physical, and

Yeates Conwell; Paul R. Duberstein; Eric D. Caine

2002-01-01

387

Rapidly Estimating Natural Gas Compressibility Factor  

Microsoft Academic Search

Natural gases containing sour components exhibit different gas compressibility factor (Z) behavior than do sweet gases. Therefore, a new accurate method should be developed to account for these differences. Several methods are available today for calculating the Z-factor from an equation of state. However, these equations are more complex than the foregoing correlations, involving a large number of parameters, which

Alireza Bahadori; Saeid Mokhatab; Brian F. Towler

2007-01-01

388

Risk Factors for Forced Migrant Flight  

Microsoft Academic Search

An important type of medical study seeks to establish the risk factors for contracting various diseases. A similar, but very small, vein of research exists in peace and conflict studies, and we seek to contribute to it. Our study evaluates whether variables shown to explain variance in numbers of forced migrants can serve as risk factors that might aid contingency

Jacqueline H. Rubin; Will H. Moore

2007-01-01

389

Career Indecision: Three Factors from Decision Theory.  

ERIC Educational Resources Information Center

Factor analyses of 174 high school students' data differentiated three sources of career indecision: information about alternatives, valuation of alternatives, and uncertainty about outcomes. Only valuation and outcome factors were empirically associated with career indecision and both mediated between general indecisiveness and career indecision.…

Germeijs, Veerle; De Boeck, Paul

2003-01-01

390

Familial Risk Factors Favoring Drug Addiction Onset  

Microsoft Academic Search

This study, primarily aimed at identification of familial risk factors favoring drug addiction onset, was carried out throughout 2008 and 2009. The study comprised a total of 146 addicts and 134 control subjects. Based on the study outcome, it can be concluded that in the families the addicts were born into, familial risk factors capable of influencing their psychosocial development

Jadranka Ivandi? Zimi?; Vlado Juki?

2012-01-01

391

Factors affecting persistence of Deaf college students  

Microsoft Academic Search

A study of attrition after the first year of college was conducted with the 1984 entry class of the National Technical Institute for the Deaf. A path-analytic model of 9 factors affecting student persistence was tested using LISREL (N = 233). The results indicate that social integration is an important factor in college persistence. Grade point average is not a

Michael S. Stinson; Marcia J. Scherer; Gerard G. Walter

1987-01-01

392

Addressing Failure Factors in Knowledge Management  

Microsoft Academic Search

This article describes a knowledge management (KM) approach conceived from countermeasures targeted at addressing failure factors suggested in the literature. In order to counteract failure factors, the approach combines the technology of knowledge-based KM systems, with the flexibility and understanding of knowledge facilitators, and the processes of the target community. In the KM system, the approach uses knowledge engineering concepts

Rosina O. Weber

393

Preservice Music Teachers' Employment Preferences: Consideration Factors  

ERIC Educational Resources Information Center

This study was designed to investigate preservice music teachers' (N = 187) perceptions of employment preferences when considering future teaching positions. Adaptive Conjoint Analysis, a business market-based research tool, was used to determine preferences for personal factors (e.g., salary, commute), school environmental factors (e.g.,…

Robinson, Nicole R.

2012-01-01

394

Forensic Human Factors: Examining The Ladbroke  

E-print Network

Forensic Human Factors: Examining The Ladbroke Grove Rail Crash in the UK Professor Neville A remains, however improbable, must be the truth? " #12;Forensic Human Factors ­ the application process. We must design our technologies for the way in which people actually behave, not the way we would

Levi, Ran

395

Overview of human factors research in Japan  

Microsoft Academic Search

The importance of human factors in nuclear power plant operations was addressed in Japan after the Three Mile Island accident in 1979. In 1986, the Chernobyl accident provided the impetus for enforcing this recognition. The report by the Nuclear Safety Commission regarding the causes and lessons learned from this accident emphasized the necessity of human factors research. The safety improvement

Susumu Takashima; Tomihiko Furuta; Kazuhiro Kiyokawa; Shuzo Ueda

1992-01-01

396

The Dimensions of Common Factors in Counseling  

ERIC Educational Resources Information Center

Common factors is a concept that offers an explanation as to what makes counseling effective. Evidence from outcome studies has implications for training and practice. The particular purpose of this paper is to review the components of a popular model of common factors, the evidence supporting them, and subsequent implications for counselor…

Leibert, Todd W.

2011-01-01

397

TOWARDS STATE ESTIMATION IN THE FACTORIZED FORM  

Microsoft Academic Search

The paper addresses the state estimation in the factorized form. The target application area is the urban traffic control, where the main controlled variables (queues) are not directly observable and have to be estimated. Additional problem is that some state variables are of a discrete-valued nature. Thus, estimation of mixed-type data (continuous and discrete valued) models is highly desirable. Factorized

Evgenia A. Suzdaleva

398

Quadratic Equations: From Factored to Standard Form  

NSDL National Science Digital Library

This activity leads students to understand the utility in the factored form of a quadratic equation. Students then express quadratic equations in standard form in the corresponding factored form. The activity is concluded with four critical-thinking questions. website: http://www.mathedpage.org/ copyright information: http://www.mathedpage.org/rights.html

2011-01-01

399

EXPOSURE FACTORS HANDBOOK - FREQUENTLY ASKED QUESTIONS  

EPA Science Inventory

This page provides a list of the most frequently asked questions and answers related to exposure factors. The following questions and answers have been compiled from inquiries made by users of the Exposure Factors Handbook. These questions and answers provide general information ...

400

Plant Selection Factors The City of  

E-print Network

Plant Selection Factors The City of OKLAHOMA CITY UTILITIES DEPARTMENT Oklahoma Cooperative-433 #12;Plan Before you Plant Plants add value to the home, provide shade, define space, and make us happy. Consider the following five plant selection factors when choosing plants for your landscape. Keep

Balasundaram, Balabhaskar "Baski"

401

On the factor set of code loops  

E-print Network

A Code loop on a binary linear code that is doubly even with a factor set is shown to be a central loop, conjugacy closed loop, Burn loop and extra loop. General forms of the identities that define the factor set of a code are deduced.

Temitope Gbolahan Jaiyeola

2008-06-05

402

Capacity Loss Factors in Semiconductor Manufacturing  

Microsoft Academic Search

This paper describes characteristics and problems of the capacity planning process in semiconductor wafer fabrication facilities. Twenty-two factors that contribute to capacity loss are identified and discussed. Informaton on these loss factors was obtained through three sources: 1) a literature review; 2) an extensive survey, interview, and workshop process; and 3) a variety of queueing and simulation models.

Jennifer Robinson; John Fowler; Eileen Neacy

2003-01-01

403

Factorization breaking in diffractive dijet production  

E-print Network

We study diffractive hard dijet production, with one or two rapidity gaps, at high energies. We emphasize that both hard and Regge factorization are broken in these processes. We show that a multi-Pomeron-exchange model for screening effects gives a specific pattern for the breakdown of factorization, which is in good agreement with diffractive dijet data collected at the Tevatron.

A. B. Kaidalov; V. A. Khoze; A. D. Martin; M. G. Ryskin

2003-02-12

404

Enterprise Level Factors Influencing Productivity in PSEs  

Microsoft Academic Search

The paper presents results of the fourth part of the study on Productivity in PSEs. The aim is to identify enterprise level factors which significantly affect productivity in PSEs. The factors relate to the aggregate physical performance of various activities such as manufacturing, sales, material consumption, factory cost control, etc. Data available for manufacturing enterprises is used for the investigation

Korgaonkar M G

405

Factors Associated with Eating Disorders in Women  

Microsoft Academic Search

Although various factors associated with eating disorders have been studied, no comprehensive source of research findings was identified in this review. The purpose of this study was to identify and synthesize research findings of factors associated with eating disorders in women published from 1992-2008. These findings may be useful to nurses, other professionals, families, and the public to facilitate the

Christina Knowles; Faculty Mentor; Frances Smith

406

Bayes factors based on test statistics  

Microsoft Academic Search

Traditionally, the use of Bayes factors has required the specification of proper prior distributions on model parameters that are implicit to both null and alternative hypotheses. I describe an approach to defining Bayes factors based on modelling test statistics. Because the distributions of test statistics do not depend on unknown model parameters, this approach eliminates much of the subjectivity that

Valen E. Johnson

2005-01-01

407

Bayes Factors Based on Test Statistics  

Microsoft Academic Search

Traditionally, the use of Bayes factors has required the specification of proper prior distributions on model parameters implicit to both null and alternative hypotheses. In this paper, I describe an approach to defining Bayes factors based on modeling test statistics. Because the distributions of test statistics do not depend on unknown model parameters, this approach eliminates the subjectivity normally associated

Valen Johnson

2004-01-01

408

Factors That Affect Chinese EFL Learner's Acquisition.  

ERIC Educational Resources Information Center

This paper is concerned with factors affecting Chinese English-as-Second-Language (ESL) learner's acquisition in the Department of Foreign Languages at Tianjin Institute of Technology. These factors, which include language shock, culture differences, culture background knowledge, motivation, and ego permeability, create psychological distance…

Wang, Zhigang

409

Factors Underlying Tongue Articulation in Speech.  

ERIC Educational Resources Information Center

Manipulation of speed of delivery and linguistic context followed by factor analysis of 11 measures of lingual activity involved in the production of the syllable /ka/ indicated three factors explained 75 percent of the variance: displacement/velocity, duration, and midsyllable duration and distance. (Author/DB)

Keller, Eric

1987-01-01

410

Factoring by Grouping: Making the Connection.  

ERIC Educational Resources Information Center

Presented is a method for factoring quadratic equations that helps the teacher demonstrate how to eliminate guessing through establishment of the connection between multiplication and factoring. Included are examples that allow the student to understand the link between the algebraic and the pictorial representations of quadratic equations. (JJK)

Kennedy, Paul A.; And Others

1991-01-01

411

Psychological Factors in Solar Observing. Final Report.  

ERIC Educational Resources Information Center

The report summarizes the aims of a 3-year program of work concerned with psychological factors in solar observing. Part I identifies several psychological factors which may affect solar observing and outlines a program of research. Part II is a report of a program of studies dealing with the application of visual perceptions in solar flare…

Pickett, Ronald M.

412

Space Human Factors Advanced Development Projects  

Microsoft Academic Search

The NASA Space Human Factors community engages in activities that range from basic research through advanced development projects to applications associated with ongoing programs such as the International Space Station and the Shuttle. This panel of NASA human factors specialists will present information relating to advanced development projects aimed at the creation of tools that can be applied to the

B. Woolford; T. Rathjen; M. Whitmore; S. Rajulu; J. Blume Novak; J. McCandless; B. Peacock; R. Prouty; R. Burnett; C. Booher; R. Ortiz; M. Segal; K. Smart; J. Gonzales; M. Dhutia; D Ngyuen; S. Vallance; E. Morphew; D. Balmer; S. Ramsey; V. Byrne

413

Factor Scores, Structure Coefficients, and Communality Coefficients  

ERIC Educational Resources Information Center

This paper presents heuristic explanations of factor scores, structure coefficients, and communality coefficients. Common misconceptions regarding these topics are clarified. In addition, (a) the regression (b) Bartlett, (c) Anderson-Rubin, and (d) Thompson methods for calculating factor scores are reviewed. Syntax necessary to execute all four…

Goodwyn, Fara

2012-01-01

414

COMMUNICATION-AVOIDING SYMMETRIC-INDEFINITE FACTORIZATION  

E-print Network

COMMUNICATION-AVOIDING SYMMETRIC-INDEFINITE FACTORIZATION GREY BALLARD, DULCENEIA BECKER, JAMES and banded. The algorithm is the first symmetric-indefinite communication-avoiding factorization: it performs, communication-avoiding algorithms, Aasen's fac- torization AMS subject classifications. 65F05, 15A23, 65Y20 1

Dongarra, Jack

415

ORDERING FOR FACTORED APPROXIMATE INVERSE PRECONDITIONERS \\Lambda  

E-print Network

preconditioner we need a more accurate approximation to the true inverse factors. However, sparsity constraints, the Infor­ mation Technology Research Centre (which is funded by the Province of Ontario), and RIACS/NASA of guaranteeing that that the preconditioner is non­ singular, and more importantly it seems that the factored

416

ORDERING FOR FACTORED APPROXIMATE INVERSE PRECONDITIONERS  

E-print Network

need a more accurate approximation to the true inverse factors. However, sparsity constraints do- mation Technology Research Centre (which is funded by the Province of Ontario), and RIACS/NASA Ames NAS 2 of guaranteeing that that the preconditioner is non- singular, and more importantly it seems that the factored

Bridson, Robert

417

Cloud Controlling Factors --Low Clouds BJORN STEVENS,  

E-print Network

Cloud Controlling Factors -- Low Clouds BJORN STEVENS, Department of Atmospheric and Oceanic) clouds is reviewed, with an emphasis on factors that may be expected to change in a changing climate of low-cloud control- ling processes are offered: these include renewing our focus on theory, model

Stevens, Bjorn

418

KEY FACTORS INFLUENCING INNOVATION IN GOVERNMENT1  

Microsoft Academic Search

This paper represents the first step in an effort to answer three questions: If innovation occurred in patterns, (1) What would be the most important factors? (2) What would be the patterns? (3) What would be their implications? Using a multi-disciplinary systems approach, the paper integrates a number of relationships that affect innovation into three principal factors: the individual's motivation

Eleanor D. Glor

419

Factors that Influence Participation in Online Learning  

ERIC Educational Resources Information Center

This study explored what factors influenced learner participation in two sections of a graduate online course at a Midwestern university. Findings indicated that online learner participation and patterns of participation are influenced by the following factors: technology and interface characteristics, content area experience, student roles and…

Vonderwell, Selma; Zachariah, Sajit

2005-01-01

420

[Predictive factors of depression and its therapy].  

PubMed

Predictive factors of for the occurrence of depressive episodes include psychosocial and biological risk factors. These factors reflect the heterogeneity and complexity of the disease. They can identify groups that would benefit from preventive measures and provide indications for suitable preventive strategies. In recent decades considerable scientific effort, for example in the field of psychiatric genetics, has been undertaken to identify predictive factors for individual antidepressant therapy response and as an aid for individual treatment decisions. However, no clinically usable conclusions could yet be drawn from the respective findings. In practice clinical factors, such as symptom cluster of the depressive disorder and specific properties of the antidepressant, individual factors and contextual factors, such as the type of treatment facility, decision support and economic aspects, are factors influencing the choice of a specific antidepressant. Early clinical improvement under antidepressant medication in the first 2 weeks of treatment is one of the best predictors for the long-term treatment outcome in patients with major depressive disorder. PMID:25204831

Himmerich, H; Kohls, E; Hegerl, U; Rummel-Kluge, C

2014-10-01

421

Factor Analysis of the Commander's Evaluation Report.  

National Technical Information Service (NTIS)

A factor-analytic study was conducted to determine what the current Commander's Evaluation Report (CER) measures and what a revised CER should measure. For these purposes, samples from the 2 and 4 skill levels were used. Five interpretable factors were ex...

V. W. Urry, W. A. Nicewander

1966-01-01

422

Income distribution, factor endowments, and trade openness  

Microsoft Academic Search

This paper studies the empirical links among factor endowments, trade and personal income distribution. By using panel data, we show that land and capital intensive countries have a less equal income distribution while skill intensive countries have a more equal income distribution. We also show that the effects of trade openness on inequality depend on factor endowments in a way

Antonio Spilimbergo; Juan Luis Londoño; Miguel Székely

1999-01-01

423

Frequent Major Changing: Extrinsic and Intrinsic Factors  

ERIC Educational Resources Information Center

Twenty undergraduates participated in individual, semi-structured interviews concerning their decisions to change majors. We found three common extrinsic and three intrinsic factors related to their decisions. Extrinsic factors included parents who were supportive but not meaningfully directive, lack of familial external guidance, and lack of…

Firmin, Michael W.; MacKillop, Lisa M.

2008-01-01

424

Safety factors in civil aircraft design requirements  

Microsoft Academic Search

Many factors influence the safety of modern civil aircraft. Some are related to design, others to the maintenance and operation of the aircraft. The factors and approaches employed vary with the type of aircraft. Those related to structural design relevant to large transport aircraft and to helicopters will be addressed in this paper.The means by which current and developing airworthiness

John W. Bristow; P. E. Irving

2007-01-01

425

Quality factor Q in dissipative anisotropic media  

E-print Network

Quality factor Q in dissipative anisotropic media Vlastislav #20; Cerven#19;y 1 and Ivan P#20;sen dissipative media. We present an algorithm for the computation of quality factor Q of a homogeneous be applied to homogeneous or inhomogeneous plane waves propagating in media of unrestricted anisotropy

Cerveny, Vlastislav

426

Factors Contributing to Institutions Achieving Environmental Sustainability  

ERIC Educational Resources Information Center

Purpose: The purpose of this paper is to determine what factors contributed to three universities achieving environmental sustainability. Design/methodology/approach: A case study methodology was used to determine how each factor contributed to the institutions' sustainability. Site visits, fieldwork, document reviews, and interviews with…

James, Matthew; Card, Karen

2012-01-01

427

Human Factors Research and Nuclear Safety.  

ERIC Educational Resources Information Center

The Panel on Human Factors Research Needs in Nuclear Regulatory Research was formed by the National Research Council in response to a request from the Nuclear Regulatory Commission (NRC). The NRC asked the research council to conduct an 18-month study of human factors research needs for the safe operation of nuclear power plants. This report…

Moray, Neville P., Ed.; Huey, Beverly M., Ed.

428

Developmental Risk Factors for Sexual Offending.  

ERIC Educational Resources Information Center

A study involving 64 Australian sex offenders and 33 non-sex offenders found childhood emotional abuse and family dysfunction, childhood behavior problems, and childhood sexual abuse were developmental risk factors for paraphilia. Emotional abuse and family dysfunction was found to be a risk factor for pedophilia, exhibitionism, rape, or multiple…

Lee, Joseph K. P.; Jackson, Henry J.; Pattison, Pip; Ward, Tony

2002-01-01

429

Factors affecting outcomes young patients with diverticulitis  

Microsoft Academic Search

Introduction. Young age has been identified in the literature as a risk factor for complications and emergency surgery among patients with acute diverticulitis. Our objective was to determine whether or not factors such as (1) duration of symptoms before admission to the hospital, (2) body mass index (BMI), and (3) smoking affected their outcome. Materials and methods. After IRB approval,

L. S. Miranda; K. Lee

2004-01-01

430

Factors Modifying Frost Tolerance of Legume Species  

Microsoft Academic Search

temperature makes it more difficult to decide how much damage occurs from low temperature alone. Factors Variability in seedling death of legumes because of spring frost in such as crop species, growth stage, duration of freezing the USA and Canada is associated with several factors. Experiments up to 40% over unhardened seedlings across growth stages and species. pared with those

M. Badaruddin; D. W. Meyer

2001-01-01

431

Regulation of Growth Factor Receptors by Gangliosides  

NSDL National Science Digital Library

Growth factor receptors are important in controlling many cellular functions, such as growth, differentiation, and disease. Growth factor receptors activate numerous signal transduction pathways within cells; however, how one growth factor receptor orchestrates multiple signal transduction pathways is not clear. This review focuses on a ubiquitous component of the plasma membrane, called "gangliosides," and how they modulate growth factor receptors at the cell membrane. Gangliosides are complex structures that consist of two parts--a lipid ceramide moiety and a carbohydrate head structure. Studies over the past two decades have demonstrated that different gangliosides can enhance or inhibit growth factor receptor activity. However, ganglioside modulation of growth factor receptors is more complex than simply stimulation or inhibition. We present and discuss three models of how gangliosides regulate growth factor receptors: (i) modulation of ligand binding, (ii) regulation of receptor dimerization, and (iii) regulation of receptor activation state and subcellular distribution. On the basis of these models, we speculate about the physiological consequences of ganglioside regulation of growth factor receptors.

Erik A. Miljan (Chicago;Children's Memorial Medical Center REV); Eric G. Bremer (Chicago;Children's Memorial Medical Center REV)

2002-11-26

432

Human Factors Simulation in Construction Management Education  

ERIC Educational Resources Information Center

Successful construction management depends primarily on the representatives of the involved construction project parties. In addition to effective application of construction management tools and concepts, human factors impact significantly on the processes of any construction management endeavour. How can human factors in construction management…

Jaeger, M.; Adair, D.

2010-01-01

433

Factors Affecting Retention in Online Courses  

ERIC Educational Resources Information Center

The purpose of this study was to expand what is known regarding the factors that relate to successful completion of online, undergraduate college courses. It addressed 13 student factors available through archival data at Northern Kentucky University based on 1,493 students enrolled in fully online courses in fall 2008. It included programmatic…

Berling, Victoria L.

2010-01-01

434

Nerve growth factor: from neurotrophin to neurokine  

Microsoft Academic Search

Nerve growth factor (NGF) is largely known as a target-derived factor responsible for the survival and maintenance of the phenotype of specific subsets of peripheral neurones and basal forebrain cholinergic nuclei during development and maturation. However, NGF also exerts a modulatory role on sensory, nociceptive nerve physiology during adulthood that appears to correlate with hyperalgesic phenomena occurring in tissue inflammation.

Rita Levi-Montalcini; Stephen D. Skaper; Roberto Dal Toso; Lucia Petrelli; Alberta Leon

1996-01-01

435

Environmental Factors Affecting Preschoolers' Motor Development  

ERIC Educational Resources Information Center

The process of development occurs according to the pattern established by the genetic potential and also by the influence of environmental factors. The aim of the present study was to focus on the main environmental factors affecting motor development. The review of the literature revealed that family features, such as socioeconomic status,…

Venetsanou, Fotini; Kambas, Antonis

2010-01-01

436

Factors in school achievement and social class  

Microsoft Academic Search

Examined perceptions of social environment by 489 elementary school children and their attitudes for their relationship to school performance. Factors derived from the data accounted for more than twice the variance attributable to social class. 1 factor, suggestive of dominance in parents and submissiveness in the child, accounted for 24% of the criterion variance, compared with social class which accounted

Gordon W. Miller

1970-01-01

437

Soluble factors involved in glioma invasion  

Microsoft Academic Search

Summary ¶Recent studies using molecular and cellular techniques of the factors regulating the invasion process have revealed a crucial role for a number of growth factors and cytokines. Their function lies on the one hand in the autocrine stimulation of the tumor cells themselves, resulting in the stimulation of protease expression and an enhancement of migratory potential. On the other

M. M. Mueller; T. Werbowetski; R. F. Del Maestro

2003-01-01

438

Economic and Cultural Factors Affecting University Excellence  

ERIC Educational Resources Information Center

Purpose: The ranking of top universities in the world has generated increased interest in the factors that enhance university performance. The purpose of this paper is to identify economic and cultural factors that affect the number of top ranking universities in each country. Design/methodology/approach: This paper first identifies the number of…

Jabnoun, Naceur

2009-01-01

439

Ability Factor Differentiation, Grades 5 through 11  

ERIC Educational Resources Information Center

Factor analyses for the same 16 variables at grades 5, 7, 9, 11 have been computed for white and black males and females. The latent roots as analyzed in three ways show a clear but small increase in the number of common factors during this time period, particularly for the white groups. (RC)

Atkin, Robert; And Others

1977-01-01

440

Local Factorization of Functions Technical Report  

E-print Network

Local Factorization of Functions Technical Report June, 2001 (Revised October, 2003) Volker Tresp anton.schwaighofer@gmx.net Abstract This paper is concerned with the notion of a local factorization distribution. We introduce the notions of local independence and of the local Kullback-Leibler divergence. We

Tresp, Volker

441

A factor analysis of young children's play  

Microsoft Academic Search

The Play Rating Scale (PRS) was used to observe 2400 threeto five?year?old children's play behaviors. Factor analysis clearly identified two factors, the first dominated by communication of ideas through parallel play in the physical, manipulative and dramatic forms of educational play and the second by participation in physical and in communicative block play. Each scale was reliable and correlations among

Olivia N. Saracho

1993-01-01

442

Factor analysis of reported minor personal mishaps  

Microsoft Academic Search

A factor analysis was performed on the intercorrelations between the responses of 1000 university students, most of whom were Arabs, to 38 statements about accidents and minor mishaps. A general factor was found to run through all the statements indicating that individuals who admit to having accidents in one situation also indicate that they have been involved in accidents in

J. D. Keehn

1959-01-01

443

Risk factors identified for certain lymphoma subtypes  

Cancer.gov

In a large international collaborative analysis of risk factors for non-Hodgkin lymphoma (NHL), scientists were able to quantify risk associated with medical history, lifestyle factors, family history of blood or lymph-borne cancers, and occupation for 11 different NHL subtypes, including less common subtypes.

444

Osteoporosis Risk Factors in Eighth Grade Students.  

ERIC Educational Resources Information Center

Presents findings from food frequency questionnaires and surveys of 138 Midwestern eighth-grade student-parent pairs. The study examined the incidence of modifiable and nonmodifiable osteoporosis risk factors and compared gender differences. Data analysis indicated that many adolescents possessed several modifiable and nonmodifiable risk factors

Lysen, Victoria C.; Walker, Robert

1997-01-01

445

Risk Factor Intervention for Health Maintenance  

ERIC Educational Resources Information Center

Risk factors for disease consist of personal habits such as cigarette smoking and excessive alcohol consumption, and bodily characteristics such as hypertension and high serum cholesterol. Progress in identifying, quantifying, and controlling risk factors is opening the way to the prevention of disease. (BB)

Breslow, Lester

1978-01-01

446

Vascular risk factors and diabetic neuropathy  

Microsoft Academic Search

background Other than glycemic control, there are no treatments for diabetic neuropathy. Thus, identifying potentially modifiable risk factors for neuropathy is crucial. We studied risk factors for the development of distal symmetric neuropathy in 1172 patients with type 1 diabetes mellitus from 31 centers participating in the European Diabetes (EURODIAB) Prospective Complications Study. methods Neuropathy was assessed at baseline (1989

Solomon Tesfaye; Nish Chaturvedi; Simon E. M. Eaton

2005-01-01

447

Is Subjective Status Influenced by Psychosocial Factors?  

ERIC Educational Resources Information Center

Objective: Associations between subjective status and health are still relatively unexplored. This study aimed at testing whether subjective status is uniquely confounded by psychosocial factors compared to objective status, and what factors that may predict subjective status. Design: A cross-sectional analysis of a population-based, random sample…

Lundberg, Johanna; Kristenson, Margareta

2008-01-01

448

Scientific literacy: Factor structure and gender differences  

Microsoft Academic Search

The purpose of this study was to investigate the factor structure of scientific literacy and to document any gender differences with respect to each factor. Participants included 1139 students (574 females, 565 males) in grades 9 through 12 who were taking a science class at one of four Midwestern high schools. Based on National Science Education Standards, a 100 item

James Joseph Manhart

1997-01-01

449

Cultural Factors in Learning and Education.  

ERIC Educational Resources Information Center

The Fifth Western Symposium on Learning, held November 15 and 16, 1973, considered the question of how cultural factors affect learning that produces important differences in personality. The following papers, with commentaries, are collected in this volume: (1) "Cultural Factors in Learning and Education: Opening Remarks," by Paul Woodring; (2)…

Aboud, Frances E., Ed.; Meade, Robert D., Ed.

450

Dietary Research - Risk Factor Monitoring & Methods Branch  

Cancer.gov

Diet, in all its complexity, is considered one of the major risk factors for cancer and is therefore a primary area of research within the Risk Factor Monitoring and Methods Branch. We work collaboratively with a wide range of researchers to conduct an integrated program that serves NCI as well as the extramural community.

451

Managerial Success Factors: A Chinese Profile  

ERIC Educational Resources Information Center

This article reports on an exploratory study conducted in the People's Republic of China (PRC) to identify the managerial success factors perceived by Chinese managers to be important in their market economy. The study also looked at how these factors are exhibited by recent graduates of Chinese universities now working in Chinese firms.…

Stivers, Bonnie P.; Adams, Janet S.; Liu, Bin

2007-01-01

452

Characterization of growth factors in human cartilage.  

PubMed

Growth factor activity has been identified in the chondrocytes and extracellular matrix (ECM) fractions of human costal cartilage. There was about five times more growth factor activity in the ECM than was found to be associated with the chondrocytes. The growth factor activity in chondrocytes was found to be associated with chromatin. Both the chromatin-associated growth factor (CAGF) activity and extracellular matrix growth factor (EMGF) activity were characterized for molecular weight, charge, and the effect of reduction by sulfhydryl reducing reagents. Biorex cation exchange chromatography showed that both CAGF and EMGF were cationic. CAGF and EMGF have molecular weights between 15,000 and 18,000 as determined by size exclusion chromatography on HPLC TSK 3000 columns equilibrated with guanidine-HCl and dithiothreitol. PMID:7169497

Bekoff, M C; Klagsbrun, M

1982-01-01

453

INSIGHTS FROM GENOMIC PROFILING OF TRANSCRIPTION FACTORS  

PubMed Central

A crucial question in the field of gene regulation is whether the location at which a transcription factor binds influences its effectiveness or the mechanism by which it regulates transcription. Comprehensive transcription factor binding maps are needed to address these issues, and genome-wide mapping is now possible thanks to the technological advances of ChIP-chip and ChIP-Seq. This review discusses how recent genomic profiling of transcription factors gives insight into how binding specificity is achieved and what features of chromatin influence the ability of transcription factors to interact with the genome, and also suggests future experiments to further our understanding of the causes and consequences of transcription factor-genome interactions. PMID:19668247

Farnham, Peggy

2010-01-01

454

Human Factors in Cabin Accident Investigations  

NASA Technical Reports Server (NTRS)

Human factors has become an integral part of the accident investigation protocol. However, much of the investigative process remains focussed on the flight deck, airframe, and power plant systems. As a consequence, little data has been collected regarding the human factors issues within and involving the cabin during an accident. Therefore, the possibility exists that contributing factors that lie within that domain may be overlooked. The FAA Office of Accident Investigation is sponsoring a two-day workshop on cabin safety accident investigation. This course, within the workshop, will be of two hours duration and will explore relevant areas of human factors research. Specifically, the three areas of discussion are: Information transfer and resource management, fatigue and other physical stressors, and the human/machine interface. Integration of these areas will be accomplished by providing a suggested checklist of specific cabin-related human factors questions for investigators to probe following an accident.

Chute, Rebecca D.; Rosekind, Mark R. (Technical Monitor)

1996-01-01

455

Overview of human factors research in Japan  

SciTech Connect

The importance of human factors in nuclear power plant operations was addressed in Japan after the Three Mile Island accident in 1979. In 1986, the Chernobyl accident provided the impetus for enforcing this recognition. The report by the Nuclear Safety Commission regarding the causes and lessons learned from this accident emphasized the necessity of human factors research. The safety improvement plan drafted by the government in August 1986 included human factors as one of the most important areas. The Nuclear Power Engineering Corporation (NUPEC) established the Institute of Human Factors as the government's research organization and the Central Research Institute of Electric Power Industry (CRIEPI) as the private sector's research organization in 1987. Furthermore, the Japan Atomic Energy Research Institute (JAERI) established its Human Factors Research Laboratory.

Takashima, Susumu; Furuta, Tomihiko; Kiyokawa, Kazuhiro; Ueda, Shuzo (Nuclear Power Engineering Corp., Tokyo (Japan))

1992-01-01

456

Q factors for antennas in dispersive media  

E-print Network

Stored energy and Q-factors are used to quantify the performance of small antennas. Accurate and efficient evaluation of the stored energy is also essential for current optimization and the associated physical bounds. Here, it is shown that the frequency derivative of the input impedance and the stored energy can be determined from the frequency derivative of the electric field integral equation. The expressions for the differentiated input impedance and stored energies differ by the use of a transpose and Hermitian transpose in the quadratic forms. The quadratic forms also provide simple single frequency formulas for the corresponding Q-factors. The expressions are further generalized to antennas integrated in temporally dispersive media. Numerical examples that compare the different Q-factors are presented for dipole and loop antennas in conductive, Debye, Lorentz, and Drude media. The computed Q-factors are also verified with the Q-factor obtained from the stored energy in Brune synthesized circuit models.

Gustafsson, Mats; Cismasu, Marius

2014-01-01

457

Effects of dietary factors on energy regulation: consideration of multiple- versus single-dietary-factor models.  

PubMed

While short-term studies demonstrate consistent effects of dietary protein, fiber, glycemic index and energy density on energy intake, long-term effectiveness trials typically indicate small or non-significant effects of these dietary factors on long-term weight change. In consequence, most lifestyle interventions for weight control typically focus on a single dietary factor, such as low energy density, to achieve reductions in energy intake. This paper proposes a multiple-dietary-factor model for the effects of dietary factors on energy intake and the regulation of energy balance that assumes additive effects of different dietary factors. The model is consistent with emerging evidence from recent studies examining pairs of dietary factors. Randomized clinical trials are now needed to determine whether multiple-dietary-factor prescriptions combined with standard behavior modification techniques lead to improved sustainability of weight loss in lifestyle interventions compared to conventional single-dietary-factor prescriptions. PMID:24747274

Roberts, Susan B; Urban, Lorien E; Das, Sai Krupa

2014-07-01

458

A Bayesian Estimation of Factor Score in Confirmatory Factor Model with Polytomous, Censored or Truncated Data.  

ERIC Educational Resources Information Center

Explores posterior analysis in estimating factor score in a confirmatory factor analysis model with polytomous, censored or truncated data, and studies the accuracy of Bayesian estimates through simulation. Results support these Bayesian estimates for statistical inference. (SLD)

Shi, Jian-Qing; Lee, Sik-Yum

1997-01-01

459

Effects of friction factor and slip factor on the performance of a centrifugal slurry pump  

E-print Network

EFFECTS OF FRICTION FACTOR AND SLIP FACTOR ON THE PERFORMANCE OF A CENTRIFUGAL SLURRY PUMP A Thesis by KETANKUMAR KANTILAL SHETH Submitted to the Graduate College of Texas ASM University in partial fulfillment of the requirements... for the degree of MASTER OF SCIENCE August 1985 Ma]or Sub]ect: Mechanical Engineering EFFECTS OF FRICTION FACTOR AND SLIP FACTOR ON THE PERFORMANCE OF A CENTRIFUGAL SLURRY PUMP A Thesis by KETANKUMAR KANTILAL SHETH Approved as to style and content by...

Sheth, Ketankumar Kantilal

2012-06-07

460

Scatter factor\\/hepatocyte growth factor is essential for liver development  

Microsoft Academic Search

POLYPEPTIDE growth factors are important effectors of cell growth and differentiation in vitro and are thought to be critical for processes such as specification of cell fate, tissue growth and organogenesis in vivo. Scatter factor1-3\\/hepatocyte growth factor4,5 (SF\\/HGF) is the prototype of an emerging family of growth factors that resemble in their domain structure and mechanism of activation the blood

Claudia Schmidt; Friedhelm Bladt; Stefanie Goedecke; Volker Brinkmann; Wolfgang Zschiesche; Melanie Sharpe; Ermanno Gherardi; Carmen Birchmeler

1995-01-01

461

The biology of stem cell factor, a new hematopietic growth factor involved in stem cell regulation  

Microsoft Academic Search

Summary  Recently, a new hematopoietic growth factor, stem cell factor, the ligand for the c-kit-proto-oncogene, has been cloned. The\\u000a gene for this factor or for its receptor are deleted in two well know series of mice mutants which display pleiotropic stem\\u000a cell defects. Therefore, this factor supposedly plays an important role in stem cell biology. This paper reviews some of the

Maria Cristina Galli; Patricia-Jane V. Giardina; Anna Rita Migliaccio; Giovanni Migliaccio

1993-01-01

462

What Are the Risk Factors for Eye Cancer?  

MedlinePLUS

... eye cancer? What are the risk factors for eye cancer? A risk factor is anything that affects ... or no known risk factors. Risk factors for eye melanoma Race/ethnicity The risk of intraocular melanoma ...

463

42 CFR 412.322 - Indirect medical education adjustment factor.  

Code of Federal Regulations, 2010 CFR

... false Indirect medical education adjustment factor. 412...412.322 Indirect medical education adjustment factor. (a... (3) The measurement of teaching activity is the ratio of...adjustment factor. The indirect teaching adjustment factor...

2010-10-01

464

49 CFR 325.73 - Microphone distance correction factors. 1  

Code of Federal Regulations, 2010 CFR

... 2010-10-01 false Microphone distance correction factors. 1 325.73 Section...Correction Factors § 325.73 Microphone distance correction factors. 1 1 Table...readings taking into account both the distance correction factors contained in §...

2010-10-01

465

What Are the Risk Factors for Testicular Cancer?  

MedlinePLUS

... testicular cancer? What are the risk factors for testicular cancer? A risk factor is anything that changes your ... known risk factors. Even if a person with testicular cancer has a risk factor, it’s often very hard ...

466

A Validation of the Factor Structure of OQ-45 Scores Using Factor Mixture Modeling  

ERIC Educational Resources Information Center

This study investigated the Outcome Questionnaire's (OQ-45) factor structure and demonstrated the use of factor mixture modeling (FMM) for the purpose of score validation. OQ-45 scores did not fit the one-class, one- and three-factor models. Use of FMM to identify a two-class model is detailed. Implications for OQ-45 users are provided. (Contains…

Kim, Seong-Hyeon; Beretvas, S. Natasha; Sherry, Alissa R.

2010-01-01

467

Examining Protective Factors and Risk Factors in Urban and Rural Head Start Preschoolers  

ERIC Educational Resources Information Center

This study examined a comprehensive screening model within children attending Head Start programs from urban (n = 232) and rural (n = 231) communities. The Devereux Early Childhood Assessment (DECA; LeBuffe & Naglieri, 1999) was used to measure social-emotional protective factors (i.e., Total Protective Factors [TPF]) and risk factors (i.e.,…

Bender, Stacy L.; Fedor, Megan C.; Carlson, John S.

2011-01-01

468

Factor Structure and Invariance across Gender of the Devereux Early Childhood Assessment Protective Factor Scale  

ERIC Educational Resources Information Center

Early childhood social-emotional assessment has traditionally focused on risk factors or psychopathology, and has less frequently examined protective factors that may serve to promote positive developmental outcomes for children. To advance conceptual models that include protective factors as key explanatory constructs, there is a need for…

Ogg, Julia A.; Brinkman, Tara M.; Dedrick, Robert F.; Carlson, John S.

2010-01-01

469

Transforming growth factor ? and epidermal growth factor expression in experimental murine polycystic kidney disease  

Microsoft Academic Search

Cystic change in polycystic kidney disease (PKD) is associated with epithelial hyperplasia, altered fluid and electrolyte transport, and de-differentiation of renal tubular epithelium. The role of polypeptide growth factors as potential modulators of cystic change remains an area of controversy. In this study, the expression of epidermal growth factor (EGF) and transforming growth factor-a (TGFa) were assessed by immunohistochemistry and

Malcolm R. Ogborn; Sanjay Sareen

1996-01-01

470

Exposure factors resources: contrasting EPA?s Exposure Factors Handbook with international sources(journal article)  

EPA Science Inventory

Efforts to compile and standardize exposure human factors have resulted in the development of a variety of resources available to the scientific community. For example, the U.S. EPA developed the Exposure Factors Handbook and Child-specific Exposure Factors Handbook to promote c...

471

Bootstrap Confidence Intervals for Ordinary Least Squares Factor Loadings and Correlations in Exploratory Factor Analysis  

ERIC Educational Resources Information Center

This article is concerned with using the bootstrap to assign confidence intervals for rotated factor loadings and factor correlations in ordinary least squares exploratory factor analysis. Coverage performances of "SE"-based intervals, percentile intervals, bias-corrected percentile intervals, bias-corrected accelerated percentile intervals, and…

Zhang, Guangjian; Preacher, Kristopher J.; Luo, Shanhong

2010-01-01

472

Expression of vascular permeability factor (vascular endothelial growth factor) and its receptors in breast cancer  

Microsoft Academic Search

Solid tumors must induce a vascular stroma to grow beyond a minimal size, and the intensity of the angiogenic response has been correlated with prognosis in breast cancer patients. Vascular permeability factor (VPF), also known as vascular endothelial growth factor (VEGF), is a secreted protein that has been implicated in tumor-associated angiogenesis. Vascular permeability factor directly stimulates endothelial cell growth

Lawrence F Brown; Brygida Berse; Robert W Jackman; Kathi Tognazzi; Anthony J Guidi; Harold F Dvorak; Donald R Senger; James L Connolly; Stuart J Schnitt

1995-01-01

473

Factor A (pH, 4-9) Factor B (temperature, 20C 37C)  

E-print Network

® Factor A (pH, 4-9) Factor B (temperature, 20C ­ 37C) Factor C (dissolved oxygen, 0% - 100%) 20 production in fermentation set up (such as temperature, dissolved oxygen, or pH for instance). Central

Strynadka, Natalie

474

Identifying Direct Protective Factors for Nonviolence  

PubMed Central

Background The CDC recently organized a panel to examine whether a series of constructs consistently acted as risk and/or direct protective factors for youth violence across four longitudinal studies. Analyses first examined constructs commonly assessed across all four studies and then included constructs unique to each study. Purpose This paper describes findings from the Pittsburgh Youth Study (PYS) as part of this supplement to the American Journal of Preventive Medicine documenting the findings from the project. Methods Participants were boys in the youngest cohort of the PYS (N= 503), which was initiated in 1987–1988. Constructs measured at age 12 years were trichotimized to test whether they acted as risk and/or direct protective factors in predicting violence (i.e., assault, rape, robbery) across ages 13–14 years and 15–18 years. Results Multivariate logistic regressions with predictors present across studies indicated that depressed mood (OR=1.96) and low religious observance (OR=1.88) were risk factors for violence at ages 13–14 years, while peer delinquency acted as both a risk (OR=2.34) and direct protective factor (OR=0.44). Low peer delinquency was also a direct protective factor (OR=0.41) for violence at ages 15–18 years. Analyses including predictors specific to the PYS indicated that negative attitude toward delinquency (OR=0.50) was protective against violence at ages 13–14 years, while the risk factors of low perceived likelihood of being caught (OR=1.81) and high neighborhood disorder/crime (OR=1.77) predicted violence at ages 15–18 years. Conclusions Some factors may be best conceptualized as direct protective factors for nonviolence, whereas other constructs act primarily as risk factors that increase the probability of adolescent violence. PMID:22789956

Pardini, Dustin A.; Loeber, Rolf; Farrington, David P.; Stouthamer-Loeber, Magda

2012-01-01

475

Valor de la microcirugía como tratamiento de la infertilidad masculina en la era de la reproducción asistida  

Microsoft Academic Search

SUMMARY The action over the epidimary tube and the deferent blocked conduct with diameter of approx. 0.1 and 0.3 mm respectively, specifies the applications of the microsurgery techniques. The microsurgery may also be needed in some varicocelectomy cases. Over all the subjects and topics related to the microsurgery, its necessary to mention that the most important factors are the practice

476

Unidentified factors in the nutrition of chickens  

E-print Network

with the "liver L hatchability factor, " Investigators fll this and other XAlboratories have shown that a number of known and unknown substances imprmre the growth and decrease the mortaiityiof chicks when supplemented to the dieti Tests conducted with chicks... with folic acidx the N easel factox x factors Ux Rx Sx or vitardns Bio or Dll, Solubilised liver products were good sources of the factori Heuser et, al (x)x6) confirmed earlier reports that fish meal war a good source of the unidentified factor required...

Dieckert, Julius Walter

2012-06-07

477

Note on radial correlation factors of atoms  

NASA Astrophysics Data System (ADS)

A peculiar property is reported for the pth order (2 ? p ? N) radial correlation factor of an N-electron atom (N ? 2). When the pth electron goes away from the nucleus, the correlation factor reduces, apart from the constant unity, to the ratio between the (p ? 1)th order reduced radial densities of the (N ? 1)- and N-electron atoms, where both atoms are considered to be in their non-degenerate ground states. The result implies that an ‘electron annihilation function’ for the reduced densities is defined by a particular case of the correlation factor. A numerical illustration is given for a simple system.

Koga, Toshikatsu

2014-11-01

478

Common risk factors in bank stocks  

E-print Network

with market, size, and value factors. The small-minus-big portfolio SMB, mimicking the size risk factor, is constructed as the monthly difference between the simple average of the returns on the three small-ME portfolios (S/L, S/M, and S/H) and the simple...- term corporate bonds (Aaa/Baa) and the yield of a market portfolio of long-term government bonds at the end of period t. t SMB = Small minus big portfolio that mimics the size risk factor at the end of period t. t HML = High minus low...

Viale, Ariel Marcelo

2007-09-17

479

Growth factors, muscle function, and doping.  

PubMed

This article discusses the inevitable use of growth factors for enhancing muscle strength and athletic performance. Much effort has been expended on developing a treatment of muscle wasting associated with a range of diseases and aging. Frailty in the aging population is a major socioeconomic and medical problem. Emerging molecular techniques have made it possible to gain a better understanding of the growth factor genes and how they are activated by physical activity. The ways that misuse of growth factors may be detected and verified in athletes and future challenges for detecting manipulation of signaling pathways are discussed. PMID:20122457

Goldspink, Geoffrey; Wessner, Barbara; Tschan, Harald; Bachl, Norbert

2010-03-01

480

Human factors certification: A useful concept?  

NASA Technical Reports Server (NTRS)

This paper considers what is involved in certification processes and their relation to human factors aspects of systems. It derives from recognition of a lack of understanding of the processes and purposes of certification. This was encountered when attempting to address the workshop topic by integrating an understanding of human factors with the observed processes of certification. The paper considers what human factors (HF) certification might be and then develops a simple model of the elements of a certification process. It then tries to relate these elements to the needs of the aviation communities and other parties with an interest in the certification of advance aviation technologies.

Jackson, Alistair

1994-01-01

481

Phenomenology of the Deuteron Electromagnetic Form Factors  

E-print Network

A rigorous extraction of the deuteron charge form factors from tensor polarization data in elastic electron-deuteron scattering, at given values of the 4-momentum transfer, is presented. Then the world data for elastic electron-deuteron scattering is used to parameterize, in three different ways, the three electromagnetic form factors of the deuteron in the 4-momentum transfer range 0-7 fm^-1. This procedure is made possible with the advent of recent polarization measurements. The parameterizations allow a phenomenological characterization of the deuteron electromagnetic structure. They can be used to remove ambiguities in the form factors extraction from future polarization data.

TheJLAB t20 collaboration; D. Abbott

2000-02-04

482

NIST Form Factor, Attenuation, and Scattering Tables  

NSDL National Science Digital Library

The National Institute of Standards and Technology has published the article, NIST Form Factor, Attenuation, and Scattering Tables. This paper describes and computes "the primary interactions of x-rays with isolated atoms from Z=1(hydrogen) to Z=92(uranium) within a self-consistent Dirac-Hartree-Fock framework." Sections included in the paper are Introduction and Importance of Form Factors, Form Factors and Standard Definitions, Available Tabulations and Basis of Current Formalism, Basic Transform Equations, Avoidance of Singularities, Avoidance of Imprecision, Integration Precision Requirements, Choice of Interpolation Formalism, and Results for Hydrogen and Helium, among others.

483

Form Factors and Dyson-Schwinger Equations  

E-print Network

A synopsis exemplifying the employment of Dyson-Schwinger equations in the calculation and explanation of hadron electromagnetic form factors and related phenomena. In particular the contribution: presents the pion form factor computed simultaneously at spacelike and timelike momenta; reports aspects of the evolution of the nucleon and Delta masses with current-quark mass and the correlation of their mass difference with that between scalar and axial-vector diquarks; describes an estimate of the s-quark content of a dressed u-quark and its impact on the nucleon's strangeness magnetic moment; and comments upon the domain within which a pseudoscalar meson cloud can materially contribute to hadron form factors.

I. C. Cloet; C. D. Roberts

2008-11-13

484

Factors associated with infantile hypertrophic pyloric stenosis.  

PubMed

We examined perinatal factors in relation to the rise in incidence of infantile hypertrophic pyloric stenosis among children in Olmsted County, Minnesota, during the period from 1950 through 1984. Primogeniture was associated with male infants but not female infants; some factor related to primogeniture, such as breast-feeding, may be etiologically important. Our data did not support a role for maternal disease, use of doxylamine succinate-pyridoxide hydrochloride (Bendectin), or an infectious process. Further study should be directed toward environmental factors associated with primogeniture. PMID:3344722

Jedd, M B; Melton, L J; Griffin, M R; Kaufman, B; Hoffman, A D; Broughton, D; O'Brien, P C

1988-03-01

485

Phenomenology of the deuteron electromagnetic form factors  

SciTech Connect

A rigorous extraction of the deuteron charge form factors from tensor polarization data in elastic electron-deuteron scattering, at given values of the 4-momentum transfer, is presented. Then the world data for elastic electron-deuteron scattering is used to parameterize, in three different ways, the three electromagnetic form factors of the deuteron in the 4-momentum transfer range 0-7 fm. This procedure is made possible with the advent of recent polarization measurements. The parameterizations allow a phenomenological characterization of the deuteron electromagnetic structure. They can be used to remove ambiguities in the form factors extraction from future polarization data.

David Abbott; Abdellah Ahmidouch; H. Anklin; J. Arvieux; James P. Ball; Shelton Beedoe; Elizabeth Beise; Louis Bimbot; Werner Boeglin; Herbert Breuer; Roger Carlini; Nicholas Chant; Samuel Danagoulian; K. Dow; Jean-Eric Ducret; Jim Dunne; Lars Ewell; L. Eyraud; C. Furget; Michel Garcon; Ron Gilman; Charles Glashausser; Paul Gueye; Kenneth Gustafsson; Kawtar Hafidi; A. Honegger; J. Jourdan; Serge Kox; Gerfried Kumbartzki; L. Lu; Allison Lung; Pete Markowitz; Justin McIntyre; David Meekins; F. Merchez; Joseph Mitchell; R. Mohring; S. Mtingwa; H. Mrktchyan; D. Pitz; Liming Qin; Ronald Ransome; J.-S. R'eal; Philip Roos; Paul Rutt; Reyad Sawafta; Stepan Stepanyan; Raphael Tieulent; E. Tomasi-Gustafsson; William Turchinetz; K. Vansyoc; J. Volmer; E. Voutier; Claude Williamson; Stephen Wood; Chen Yan; Jianguo Zhao; W. Zhao

2000-04-01

486

Phenomenology of the deuteron electromagnetic form factors  

SciTech Connect

A rigorous extraction of the deuteron charge form factors from tensor polarization data in elastic electron-deuteron scattering, at given values of the 4-momentum transfer, is presented. Then the world data for elastic electron-deuteron scattering is used to parameterize, in three different ways, the three electromagnetic form factors of the deuteron in the 4-momentum transfer range 0-7 fm. This procedure is made possible with the advent of recent polarization measurements. The parameterizations allow a phenomenological characterization of the deuteron electromagnetic structure. They can be used to remove ambiguities in the form factors extraction from future polarization data.

David Abbott; Abdellah Ahmidouch; H. Anklin; J. Arvieux; James P. Ball; Shelton Beedoe; Elizabeth Beise; Louis Bimbot; Werner Boeglin; Herbert Breuer; Roger Carlini; Nicholas Chant; Samuel Danagoulian; K. Dow; Jean-Eric Ducret; Jim Dunne; Lars Ewell; L. Eyraud; C. Furget; Michel Garcon; Ron Gilman; Charles Glashausser; Paul Gueye; Kenneth Gustafsson; Kawtar Hafidi; A. Honegger; J. Jourdan; Serge Kox; Gerfried Kumbartzki; L. Lu; Allison Lung; Pete Markowitz; Justin McIntyre; David Meekins; F. Merchez; Joseph Mitchell; R. Mohring; S. Mtingwa; H. Mrktchyan; D. Pitz; Liming Qin; Ronald Ransome; J.-S. R'eal; Philip Roos; Paul Rutt; Reyad Sawafta; Stepan Stepanyan; Raphael Tieulent; E. Tomasi-Gustafsson; William Turchinetz; K. Vansyoc; J. Volmer; E. Voutier; Claude Williamson; Stephen Wood; Chen Yan; Jianguo Zhao; W. Zhao

2000-02-25

487

Multi sensor transducer and weight factor  

NASA Technical Reports Server (NTRS)

A multi-sensor transducer and processing method allow insitu monitoring of the senor accuracy and transducer `health`. In one embodiment, the transducer has multiple sensors to provide corresponding output signals in response to a stimulus, such as pressure. A processor applies individual weight factors to reach of the output signals and provide a single transducer output that reduces the contribution from inaccurate sensors. The weight factors can be updated and stored. The processor can use the weight factors to provide a `health` of the transducer based upon the number of accurate versus in-accurate sensors in the transducer.

Immer, Christopher D. (Inventor); Lane, John (Inventor); Eckhoff, Anthony J. (Inventor); Perotti, Jose M. (Inventor)

2004-01-01

488

Human Factors and the International Space Station  

NASA Technical Reports Server (NTRS)

The purposes of this panel are to inform the human factors community regarding the challenges of designing the International Space Station (ISS) and to stimulate the broader human factors community into participating in the various basic and applied research opportunities associated with the ISS. This panel describes the variety of techniques used to plan and evaluate human factors for living and working in space. The panel members have contributed to many different aspects of the ISS design and operations. Architecture, equipment, and human physical performance requirements for various tasks have all been tailored to the requirements of operating in microgravity.

Peacock, Brian; Rajulu, Sudhakar; Novak, Jennifer; Rathjen, Thomas; Whitmore, Mihriban; Maida, James; Woolford, Barbara

2001-01-01

489

Assessment of International Work on Organizational Factors  

SciTech Connect

This report describes the concept of organizational factors and includes a consensus definition. It summarizes existing methods for assessing organizations from a safety culture perspective, for analyzing past incidents at plants to assess the role of safety culture, and for using such incident analysis to provide a database supporting organizational factors models. It describes existing methods that potentially could be extended to quantify organizational factors in a Probabilistic Safety Analysis. It concludes that no method is clearly superior for this purpose and recommends the organization of a workshop to clarify important issues prior to selecting a method.

Wall, Ian

2002-06-01

490

The motion commotion: Human factors in transportation  

NASA Technical Reports Server (NTRS)

The program for a systems approach to the problem of incorporating human factors in designing transportation systems is summarized. The importance of the human side of transportation is discussed along with the three major factors related to maintaining a mobile and quality life. These factors are (1) people, as individuals and groups, (2) society as a whole, and (3) the natural environment and man-made environs. The problems and bottlenecks are presented along with approaches to their solutions through systems analysis. Specific recommendations essential to achieving improved mobility within environmental constraints are presented.

Millar, A. E., Jr. (editor); Rosen, R. L. (editor); Gibson, J. D. (editor); Crum, R. G. (editor)

1972-01-01

491

Fundamentals of systems ergonomics/human factors.  

PubMed

Ergonomics/human factors is, above anything else, a systems discipline and profession, applying a systems philosophy and systems approaches. Many things are labelled as system in today's world, and this paper specifies just what attributes and notions define ergonomics/human factors in systems terms. These are obviously a systems focus, but also concern for context, acknowledgement of interactions and complexity, a holistic approach, recognition of emergence and embedding of the professional effort involved within organization system. These six notions are illustrated with examples from a large body of work on rail human factors. PMID:23684119

Wilson, John R

2014-01-01

492

Purification and properties of intracellular clotting factor, factor B, from horseshoe crab (Tachypleus tridentatus) hemocytes.  

PubMed

An intracellular clotting factor, factor B, which is closely associated with the hemolymph coagulation system of horseshoe crab (Tachypleus tridentatus), was purified and characterized. The purified preparation gave a single band (Mr = 64,000) on sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE) in the absence of 2-mercaptoethanol, while three bands (Mr = 64,000, 40,000, and 25,000) were detected on SDS-PAGE after reduction. This preparation was converted by limulus clotting factor C to an activated form, factor B, with Mr = 56,000 consisting of a heavy chain (Mr = 32,000) and a light chain (Mr = 25,000) bridged by disulfide linkage(s). The factor B, which was produced separately by treating the partially purified factor B with factor C, was also purified. It gave a single band on unreduced SDS-PAGE and two bands on reduced SDS-PAGE. The purified factor B had Mr of 56,000 consisting of a heavy chain (Mr = 32,000) and a light chain (Mr = 25,000). These results indicated that the purified factor B zymogen is a mixture of single-chain and two-chain forms, both of which have the same molecular weight of 64,000, and that these two forms are converted to factor B by factor C. The diisopropyl phosphorofluoridate-sensitive site of factor B was found in the heavy chain. The reconstitution studies using purified factor C, factor B, proclotting enzyme and coagulogen in the presence of lipopolysaccharide indicated that factor B is an essential component to complete sequential activation of the limulus clotting system, and that it specifically activates proclotting enzyme to the active clotting enzyme. PMID:3519594

Nakamura, T; Horiuchi, T; Morita, T; Iwanaga, S

1986-03-01

493

A review of "Blown by the Spirit: Puritanism and the Emergence of an Antinomian Underground in Pre-Civil War England" by David Como.  

E-print Network

yeasty mix of competing discourses. Sometimes the cause is attributed, far less probably, to the proto- feminist disposition of Anne Hutchinson, considered by some to be a cultural heroine martyred by powerful elite male persecutors. Oddly, not enough... contem- plated settlement in New England as if his views would not be problematic there. Como rightly suggests that Howes? case indi- cates the blurred boundaries among competing doctrinal positions within Puritan culture. Whereas Como delves...

William J. Scheick

2004-01-01

494

Development and Selection of Ammonia Emission Factors.  

National Technical Information Service (NTIS)

This report compiles recent literature on ammonia (NH3) emission factors for application in the United States. Most of the recent research supports acid deposition studies in the European community (specifically, the Netherlands, Great Britain, and Scandi...

R. Battye, W. Battye, C. Overcash, S. Fudge

1994-01-01

495

Carbon Dioxide Emission Factors for Coal  

EIA Publications

The Energy Information Administration (EIA) has developed factors for estimating the amount of carbon dioxide emitted, accounting for differences among coals, to reflect the changing "mix" of coal in U.S. coal consumption.

1994-01-01

496

Pneumococcal Disease Risk Factors and Transmission  

MedlinePLUS

... Organization National Foundation for Infectious Diseases Risk Factors & Transmission Share Compartir On this Page Children at Risk ... the brain and spinal cord) Who smoke cigarettes Transmission Pneumococcal bacteria spread from person-to-person by ...

497

Neurotrophic Factors and Structural Plasticity in Addiction  

PubMed Central

Drugs of abuse produce widespread effects on the structure and function of neurons throughout the brain’s reward circuitry, and these changes are believed to underlie the long-lasting behavioral phenotypes that characterize addiction. Although the intracellular mechanisms regulating the structural plasticity of neurons are not fully understood, accumulating evidence suggests an essential role for neurotrophic factor signaling in the neuronal remodeling which occurs after chronic drug administration. Brain-derived neurotrophic factor (BDNF), a growth factor enriched in brain and highly regulated by several drugs of abuse, regulates the phosphatidylinositol 3?-kinase (PI3K), mitogen-activated protein kinase (MAPK), phospholipase C? (PLC?) and nuclear factor kappa B (NF?B) signaling pathways, which influence a range of cellular functions including neuronal survival, growth, differentiation, and structure. This review discusses recent advances in our understanding of how BDNF and its signaling pathways regulate structural and behavioral plasticity in the context of drug addiction. PMID:18647613

Russo, Scott J.; Mazei-Robison, Michelle S.; Ables, Jessica L.; Nestler, Eric J.

2009-01-01

498

NASA information sciences and human factors program  

NASA Technical Reports Server (NTRS)

The FY 1988 descriptions of technical accomplishments is presented in seven sections: Automation and Robotics, Communications Systems, Computer Sciences, Controls and Guidance, Data Systems, Human Factors, and Sensor Technology.

Holcomb, Lee; Hood, Ray; Montemerlo, Melvin; Sokoloski, Martin; Jenkins, James; Smith, Paul; Dibattista, John

1989-01-01

499

40 CFR 227.15 - Factors considered.  

...of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) OCEAN DUMPING CRITERIA FOR THE EVALUATION OF PERMIT APPLICATIONS FOR OCEAN DUMPING OF MATERIALS Need for Ocean Dumping § 227.15 Factors considered. The need for...

2014-07-01

500

7 CFR 29.1059 - Special factor.  

Code of Federal Regulations, 2010 CFR

...AGRICULTURE COMMODITY STANDARDS AND STANDARD CONTAINER REGULATIONS TOBACCO INSPECTION Standards Official Standard Grades for Flue-Cured Tobacco (u.s. Types 11, 12, 13, 14 and Foreign Type 92) § 29.1059 Special factor. A symbol...

2010-01-01