322,947 research outputs found
COCU, circa 1960
No full textIndoor group portrait of three men and one woman. Written on recto: New officers of COCU--(reading from left to right) The Rev. Charles S. Spivey Jr. (AME), first vice chairman; Mrs. Ralph Stair (UPUSA), second vice chairman; The Rev. Dr. George G. Beazley (Christian-Disciples), chairman; Mr. George M. Miller (AMEZ), secretary.The Atlanta University Center Robert W. Woodruff Library acknowledges the generous support of the Council on Library and Information Resources (CLIR) in supporting the processing and digitization of a number of historic collections as part of the project: Our Story: Digitizing Publications and Photographs of the Historically Black Atlanta University Center Institutions.</em
Two growth modes of nanostructures near Cu(111) step edges in CoCu and PtCu surface alloys
No full textThe formation of CoCu and PtCu alloys on the stepped Cu(111) substrate was simulated. Dendritic and finger-like protrusions grow near the edges of the steps. The shape and the internal structure of the protrusions depend on the type of the step edge, temperature and concentrations of impurity atoms. The internal structure and the shape of the protrusions are significantly different in PtCu and CoCu alloys. Pt atoms tend to be surrounded by Cu atoms and Co atoms tend to combine into Co backbones. The dendritic protrusions usually grow at 200 K and the finger-like protrusions usually grow at 300 K. The shape of the protrusions also depends on the type of the step edge and the concentration of impurity atoms. The main differences of PtCu and CoCu protrusions can be explained by the values of the diffusion barriers of the key processes
Post translational modification, stability, and abundance of seminal fluid proteins in mates of <i>iab-6<sup>cocu</sup></i> or control males.
No full text<p>Western blots using antibodies of known LTR-associated Acps CG9997, CG1656, CG1652, and CG17575 as well as STR Acp ovulin (Acp26Aa). Accessory gland extracts from a single control (lane 1) and <i>iab-6<sup>cocu</sup></i> male (lane 2) were used as positive controls and reproductive tract extracts from 4 virgin females (lane 9) were used as a negative control. Extracts from the reproductive tracts of females mated to control (+) or <i>iab-6<sup>cocu</sup></i> (Δ) were collected at 15′ (lanes 3–4, 2 RTs per), 30′ (lane 5–6 s, 3 RTs per), and 1 h ASM (lanes 7–8, 6 RTs per). A) Full length CG9997 is produced by <i>iab-6<sup>cocu</sup></i> males but is not present in the reproductive tracts of their mates. The smaller processed form of CG9997 is present in mates of <i>iab-6<sup>cocu</sup></i> suggesting that CG9997 is transferred. Both CG1656 and CG1652 are transferred to females normally by <i>iab-6<sup>cocu</sup></i> males, but both of these proteins run at a lower apparent molecular weight than in control males. B) <i>iab-6<sup>cocu</sup></i> males transfer more CG17575 to their mates than control males. Tubulin was used as a loading control for the female reproductive tracts. C) Both mates of control and <i>iab-6<sup>cocu</sup></i> males receive ovulin. However, the ovulin produced by <i>iab-6<sup>cocu</sup></i> males also runs at a lower apparent molecular weight than in controls.</p
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Electrochemical control of the magnetic properties of Co and CoCu/Co nanowires
No full textUsing appropriate electrodeposition conditions, it is shown that the structural and magnetic properties of arrays of Co and CoCu/Co nanowires can be controlled. The hcp c axis orientation can be oriented parallel or perpendicular to the wire axis simply by changing the pH of the electrolytic solution and/or deposition rate. This selected orientation of the c axis leads to a drastic change in overall magnetic anisotropy and is promising for the fabrication of spin valves structures by electrodeposition.Anglai
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
English Cross-Cultural Adaptation, Validation and reliability of the COCU-LCRD 23 scale. Research Project
No full textRESUMEN
Objetivos: Adaptar y validar el instrumento COCU-LCRD 23 en los cuidadores de habla inglesa de la zona levantina española, consiguiendo que sea equivalente a nivel semántico, conceptual, de contenido, técnico y de criterio de distintas culturas.
Determinar la validez y fiabilidad del instrumento COCU-LCRD 23 y averiguar el grado de conocimiento sobre LCRD en la población estudiada.
Metodología: En este proyecto se plantean tres fases. En la fase 1, se procederá con la traducción retro traducción y adaptación transcultural del instrumento COCU-LCRD 23 al habla inglesa.
En la fase 2 se realizará la validez de contenido. Se usará la técnica DELPHI modificada a dos rondas, que será efectuada por 10 expertos en la materia y con los datos obtenidos se calculará el índice de validez de contenido (IVC).
Por último en la fase 3, se ejecutará un estudio observacional transversal para determinar la validez de constructo y la fiabilidad por consistencia interna y análisis RASCH (teoría de respuesta al ítem) del instrumento COCU-LCRD 23 en inglés. n= 115
Para el proceso de validación del cuestionario, se utilizará una técnica de análisis mixta, mediante métodos clásicos de validación de cuestionarios y métodos de análisis de respuesta al ítem, incluyendo análisis RASCH. La suposición de la independencia local entre los ítems se probará utilizando la estadística Q3 de Yen. El análisis de Rasch se llevará a cabo mediante el programa informático Jmetrik. Para la estimación de los parámetros se utilizará el método de estimación conjunta de máxima verosimilitud. El análisis diferencial de funcionamiento de los ítems (DIF) se realizará comparando el grupo focal con el grupo de referencia. Se calculará el tamaño del efecto (OR común) y el intervalo de confianza del 95%. El análisis de la validez de constructo se llevará a cabo mediante dos técnicas: análisis factorial y pruebas de contraste de hipótesis en grupos conocidos. Para comparar las puntuaciones de conocimiento entre los grupos se realizará la prueba t de Student o la prueba U de Mann-Whitney, en función de la distribución de la variable. Para la validez de constructo mediante análisis factorial y fiabilidad por consistencia interna, se utilizará el programa FACTOR. Tras esto se realizará un análisis descriptivo de las variables de interés, para caracterizar la muestra. Posteriormente, se llevará a cabo un análisis bi-variante y multivariante de las puntuaciones del cuestionario. Las variables dicotómicas se estudiarán mediante la prueba t de Student o la U de Mann-Withney en función de su distribución. Para ello, se llevará a cabo la prueba de Kolmogorov-Smirnof. Para las variables de más de dos categorías se utilizará la prueba ANOVA(Análisis de la Varianza de un factor)o la prueba de Kruskall-Wallis. También se establecerán correlaciones con variables cuantitativas mediante la prueba r de Pearson o la S de Spearman si las variables categóricas son ordinales. Para el análisis multivariante se utilizará un modelo lineal o de regresión logística según proceda. Para el análisis de datos se utilizará el programa SPSS versión 26.0.ABSTRACT
Objectives: To adapt and validate the COCU-LCRD 23 instrument in the English-speaking caregivers of the Spanish Levantine area, making it equivalent at the semantic, conceptual, content, technical and criteria levels of different cultures.
To determine the validity and reliability of the COCU-LCRD 23 instrument and to find out the degree of knowledge about LCRD in the population studied.
Methodology: In this project three phases are proposed. In phase 1, we will proceed with the retro-translation and cross-cultural adaptation of the COCU-LCRD 23 instrument into the English language.
In phase 2, content validity will be conducted. The modified DELPHI technique will be used in two rounds, which will be carried out by 10 experts in the field and with the data obtained the content validity index (CVI) will be calculated.
Finally, in phase 3, a cross-sectional observational study will be carried out to determine construct validity and reliability by internal consistency and RASCH analysis (item response theory) of the COCU-LCRD 23 instrument in English. n= 115
For the process of validating the questionnaire, a mixed analysis technique will be used, using classic questionnaire validation methods and item response analysis methods, including RASCH analysis.
The assumption of local independence between items will be tested using Yen's Q3 statistics.
Rasch analysis will be performed using the Jmetrik software. The maximum likelihood joint estimation method will be used for parameter estimation.
Differential item performance analysis (DIF) will be performed by comparing the focus group with the reference group. The effect size (common OR) and the 95% confidence interval will be calculated.
The analysis of construct validity will be carried out by means of two techniques: factorial analysis and hypothesis contrast tests in known groups.
To compare the knowledge scores between the groups, the Student t-test or the Mann-Whitney U-test will be performed, depending on the distribution of the variable.
For construct validity by factor analysis and reliability by internal consistency, the program FACTOR will be used. After this, a descriptive analysis of the variables of interest will be made to characterize the sample. Subsequently, a bivariate and multivariate analysis of the questionnaire scores will be carried out.
The dichotomous variables will be studied by means of the Student t test or the Mann-Withney U test depending on their distribution. The Kolmogorov-Smirnof test will be used for this purpose. For variables of more than two categories, the ANOVA test (Analysis of Variance of a factor) or the Kruskall-Wallis test will be used.
Correlations with quantitative variables will also be established using Pearson's r test or Spearman's S test if the categorical variables are ordinal. For multivariate analysis a linear or logistic regression model will be used as appropriate.
For data analysis, SPSS version 26.0 will be used.Máster en Gestión Integral e Investigación de las Heridas Crónica
Author's address:
No full textCan archives of audiovisual TV interviews be used to make authors more visible to students, and thereby reduce the learning gap between native and non-native language speakers in college classes? We examined students in a college course who learned about one scholar's ideas through watching an audiovisual TV interview (i.e., visible author format) and about another scholar's ideas through reading a formal text description (i.e., invisible author format). For the invisible author, native language speakers scored significantly higher than the non-native language speakers on a corresponding exam question (i.e., a cognitive measure), generated more words on the exam question (i.e., a motivational measure), and mentioned the author's name more often in answering the exam question (i.e., an affective measure). For the visible author, the groups did not differ on any of these measures. These findings provide evidence for the idea that making the author visible through audiovisual TV interviews can eliminate the learning gap between native and non-native language speakers. 3 Universities around the world serve students who are non-native speakers of th
- …
