Communication systems simulator with error correcting codes using MATLAB     

C. Gomez  J. E. Gonzalez  J. M. Pardo 《European Journal of Engineering Education》2003,28(4):483-490

In this work, the characteristics of a simulator for channel coding techniques used in communication systems, are described. This software has been designed for engineering students in order to facilitate the understanding of how the error correcting codes work. To help students understand easily the concepts related to these kinds of codes, a user-friendly interface has been developed using the MATLAB environment, since it provides many toolboxes related to communication systems.  相似文献   

Simultaneous contrast in goldfish     

R. C. Gonzalez  Alice S. Powers 《Learning & behavior》1973,1(2):96-98

Two groups of goldfish were trained to strike an illuminated target for food reward. The experimental group was reinforced with 10 worms for response to one color and with 1 worm for response to a different color. The control group was reinforced with 1 worm for response to each color. The experimental group gave clear evidence of discrimination of reward magnitude and also of simultaneous negative contrast. These results bear on the relation of the mechanisms of simultaneous and successive contrast.  相似文献   

Performance of Nonrecursive Latent Variable Models under Misspecification     

Larry R. Price  Daniel P. Gonzalez  Tiffany A. Whittaker 《Structural equation modeling》2019,26(1):12-23

A problem central to structural equation modeling is measurement model specification error and its propagation into the structural part of nonrecursive latent variable models. Full-information estimation techniques such as maximum likelihood are consistent when the model is correctly specified and the sample size large enough; however, any misspecification within the model can affect parameter estimates in other parts of the model. The goals of this study included comparing the bias, efficiency, and accuracy of hypothesis tests in nonrecursive latent variable models with indirect and direct feedback loops. We compare the performance of maximum likelihood, two-stage least-squares and Bayesian estimators in nonrecursive latent variable models with indirect and direct feedback loops under various degrees of misspecification in small to moderate sample size conditions.  相似文献   

Advancing Research and Measurement on Fathering and Children's Development     

Brenda L. Volling  Natasha J. Cabrera  Mark E. Feinberg  Damon E. Jones  Brandon T. McDaniel  Siwei Liu  David Almeida  Jin-kyung Lee  Sarah J. Schoppe-Sullivan  Xin Feng  Micah L. Gerhardt  Claire M. Kamp Dush  Matthew M. Stevenson  Paige Safyer  Richard Gonzalez  Joyce Y. Lee  Bernhard Piskernik  Lieselotte Ahnert  Elizabeth Karberg  Jenessa Malin  Catherine Kuhns  Jay Fagan  Rebecca Kaufman  W. Justin Dyer  Ross D. Parke  Jeffrey T. Cookston 《Monographs of the Society for Research in Child Development》2019,84(1):7-160

Fathers are more than social accidents. Research has demonstrated that fathers matter to children's development. Despite noted progress, challenges remain on how best to conceptualize and assess fathering and father–child relationships. The current monograph is the result of an SRCD-sponsored meeting of fatherhood scholars brought together to discuss these challenges and make recommendations for best practices for incorporating fathers in studies on parenting and children's development. The first aim of this monograph was to provide a brief update on the current state of research on fathering and to lay out a developmental ecological systems perspective as a conceptual framework for understanding the different spaces fathers inhabit in their children's lives. Because there is wide variability in fathers’ roles, the ecological systems perspective situates fathers, mothers, children, and other caregivers within an evolving network of interrelated social relationships in which children and their parents change over time and space (e.g., residence). The second aim was to present examples of empirical studies conducted by members of the international working group that highlighted different methods, data collection, and statistical analyses used to capture the variability in father–child relationships. The monograph ends with a commentary that elaborates on the ecological systems framework with a discussion of the broader macrosystem and social-contextual influences that impinge on fathers and their children. The collection of articles contributes to research on father–child relationships by advancing theory and presenting varied methods and analysis strategies that assist in understanding the father–child relationship and its impact on child development.  相似文献   

An Ecological Perspective of Latina/o College Student Ethnicity     

Roger Geertz Gonzalez 《Diaspora, Indigenous, and Minority Education》2017,11(1):31-44

Although Latinos are the largest minority population in the United States and the largest minority population on American campuses, there is little research concerning Latino college student ethnic identity. This study incorporates an ecological model to examine the levels of influence of different settings and backgrounds of Latino college students. The findings show that Latinos from different countries of origin and within the same countries of origin identify their ethnic identity differently depending on several factors including generation, immigration status, country of origin, language preferences, and discrimination.  相似文献   

Drug education in bolivian schools: A feasibility study for cross-cultural application of a preventive curricular unit     

Gerardo M. Gonzalez  Veronica Kaune Moreno 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》1995,41(6):439-458

The purpose of this study was to test the feasibility of adapting and implementing in La Paz, Bolivia a drug education course originally developed for use in the middle schools in the United States. On the basis of teacher and student evaluations, it was concluded that the unit is a viable, culturally relevant and effective method of drug education in the public and private schools in La Paz. Implications for the prevention of other health-related problems and for implementation of a demandreduction strategy to prevent drug abuse throughout the Americas are discussed.

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Zusammenfassung Ziel dieser Studie war es herauszufinden, inwieweit die Anwendung eines Kurses zur Drogenerziehung in La Paz, Bolivien durchführbar ist. Dieser Kurs wurde ursprünglich für Mittelschulen in den Vereinigten Staaten entwickelt. Auf der Basis von Bewertungen durch Lehrer und Schüler fand man heraus, daß dieser Kurs eine lebensfähige, kulturell relevante und effektive Art der Drogenerziehung in öffentlichen und privaten Schulen in La Paz ist. Außerdem wird diskutiert, welche Auswirkungen auf die Verhütung anderer Gesundheitsprobleme erzielt werden, sowie auf die Durchführung einer Strategie zur Verringerung der Nachfrage, um den Drogenmißbrauch in ganz Amerika zu reduzieren.

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Resumen El objetivo de este estudio residía en comprobar la factibilidad de adaptar e implementar en La Paz, Bolivia, un curso de educación antidrogas que se ha desarrollado para aplicarlo en las escuelas de enseñanza media de los Estados Unidos. Sobre la base de evaluaciones hechas por docentes y estudiantes se ha llegado a la conclusión de que el curso es un método viable, de relevancia cultural y efectivo para realizar una educación antidrogas en los colegios públicos y privados de La Paz. Se discuten las implicaciones del estudio para la prevención de otros problemas relacionados con la salud y para implementar una estrategia de reducción de demanda, a efectos de prvenir el abuso de drogas en todo el continente.

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Résumé L'objectif de cette étude est de tester la faisabilité de l'adaptation et de la mise en oeuvre à La Paz, en Bolivie, d'un programme de prévention contre la drogue, développé à l'origine pour être utilisé dans les écoles primaires aux Etats-Unis. D'après les évaluations des enseignants et des apprenants, il s'est avéré que ce programme constitue une méthode de prévention contre la drogue valable, culturellement pertinente et efficace, pour les écoles publiques et privées de La Paz. La discussion porte sur les répercussions sur la prévention d'autres problèmes de santé et sur la mise en oeuvre d'une stratégie de réduction de la dépendance afin de s'opposer aux méfaits de la drogue sur le continent américain.

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This project was made possible by a grant from the North-South Center, University of Miami, Florida, USA.  相似文献   

IX. DEVELOPMENTAL TRAJECTORIES OF CHILDREN'S SOMATIC COMPLAINTS AFTER THE BIRTH OF A SIBLING     

Emma Beyers-Carlson  Matthew M. Stevenson  Richard Gonzalez  Wonjung Oh  Brenda L. Volling  Tianyi Yu 《Monographs of the Society for Research in Child Development》2017,82(3):118-129

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Analyzing Monte Carlo Simulation Studies With Classification and Regression Trees     

Oscar Gonzalez  Holly P. O’Rourke  Ingrid C. Wurpts  Kevin J. Grimm 《Structural equation modeling》2018,25(3):403-413

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Cultural Differences in Maternal Beliefs and Behaviors: A Study of Middle-Class Anglo and Puerto Rican Mother-Infant Pairs in Four Everyday Situations     

Robin L. Harwood  Axel Schoelmerich  Pamela A. Schulze  & Zenaida Gonzalez 《Child development》1999,70(4):1005-1016

This study examines cultural patterning in situational variability in mother-infant interactions among middle-class Anglo and Puerto Rican mothers and their 12 to 15-month-old firstborn children. Forty mothers were interviewed regarding their long-term socialization goals and childrearing strategies, and videotaped interacting with their infants in four everyday settings: feeding, social play, teaching, and free play. Results suggest that: (1) Anglo mothers place greater emphasis on socialization goals and childrearing strategies consonant with a more individualistic orientation, whereas Puerto Rican mothers place greater focus on goals and strategies consistent with a more sociocentric orientation; (2) coherence was found between mothers' childrearing beliefs and practices, with Puerto Rican mothers more likely to directly structure their infants' behaviors; and (3) situational variability arose in mother-infant interactions, but this variability showed a cultural patterning consistent with mothers' long-term socialization goals and childrearing beliefs.  相似文献   

Paraprofessionals use of group school-based instrumental mentoring: Examining process and preliminary outcomes     

Gerald G. Strait  Jenna Turner  Diana Stinson  Samanthia Harrison  Rojan Bagheri  Tanya Perez  Bradley H. Smith  Jorge Gonzalez  Jacqueline R. Anderson  Jill Simpson  Sam D. McQuillin 《Psychology in the schools》2020,57(9):1492-1505

Many schools use paraprofessionals to implement and monitor interventions. Though paraprofessionals are cost-effective, many questions remain about the training and skills they need to implement a wide array of school-based interventions. In this study, we compare paraprofessionals' (i.e., undergraduates) implementation of the Group-Academic Mentoring Program for Education Development (Group-AMPED) to school psychology graduate students' implementation of Group-AMPED. Ten paraprofessionals and five school psychology graduate students provided approximately eight sessions of Group-AMPED to 35 sixth-grade students. Results indicated no significant differences between middle school students' engagement when groups were led by either school psychology graduate students or paraprofessionals. Similarly, self-reports of fidelity and supervisor postsession implementation confidence indicated no difference between paraprofessionals and graduate students' implementation of Group-AMPED. Follow-up measures indicated that mentors and proteges perceived Group-AMPED as feasible, acceptable, and understandable. Most importantly, middle school students participating in Group-AMPED had significantly higher second-semester grades in comparison to a small control group.  相似文献