Relational capital wealth in an organizational context     

Angel?Eustorgio?RiveraEmail author  Francisco?Javier?Carrillo 《知识管理研究与实践》2016,14(4):434-444

This paper introduces a new relational capital framework providing a relationships typology between significant agents in an organizational context and offers an integrated approach to understand relationships as a key element of organizations. Some theoretical contributions in literature on strategy and organization are considered. Following this trend, our paper proposes a general relationships classification considering the four essential relationship properties and shows that these are fundamental for the development and existence of K-events during organizational activities. Based on the elements of K-events during a relationship between significant agents, we propose that the quality of any relationship, at any level of analysis, relies on the development and measurement of certain combinations of variables that are embedded in four different categories. This study explicitly shows some possible theoretical segmentation criteria or theoretical dichotomies for analyzing the concept of relationship between agents. For theorists, it provides a conceptual base for the relationships typology, and for practitioners it identifies key elements for optimal value exchanges.  相似文献   

School and community factors involved in Chilean students’ perception of school safety          下载免费PDF全文

Verónica López  Javier Torres‐Vallejos  Boris Villalobos‐Parada  Tamika D. Gilreath  Paula Ascorra  Marian Bilbao  Macarena Morales  Claudia Carrasco 《Psychology in the schools》2017,54(9):991-1003

Identifying and understanding predictors of school safety perceptions is important due to its consequences for students. However, it is not clear what school‐related factors most contribute to explaining students’ perception of school safety, and how they relate to community‐related factors such as neighborhood safety. The purpose of this study was to understand the factors associated with Chilean elementary and middle school students’ perceptions of school safety. We used a sample of 5,455 students from low socioeconomic status public schools, and analyzed the predictive value of peer physical and verbal victimization; teacher and school staff victimization; teacher's social support; and perception of safety in the students’ neighborhoods on perceptions of school safety. Findings showed that although different forms of school violence, particularly peer physical victimization and physical and sexual victimization from teachers and school staff, contribute to students’ perception of school safety, the highest contribution came from students perceiving their neighborhoods as unsafe. In contrast, teacher social support contributed to increased levels of perceived school safety. We discuss the need for school‐based interventions that address physical victimization and engage teachers in prosocial and less punitive approaches to foster a positive and safe school climate, and in fostering school–community partnerships.  相似文献   

Velocity field control of robot manipulators by using only position measurements     

Javier Moreno-Valenzuela 《Journal of The Franklin Institute》2007,344(8):1021-1038

In the velocity field control approach the robot motions are specified through a vectorial function that assigns the desired velocity to each point of the configuration space. In other words, a velocity field defines the robot desired velocity in the operational space as a function of its current position. In this paper is introduced a new algorithm to solve the velocity field control formulation in the robot operational space. The proposed approach assumes only joint position measurements and is based on a hierarchical structure that results of using the kinematic control concept and a joint velocity controller. To estimate the joint velocity, nonlinear filtering of the joint position is used.  相似文献   

Loneliness,personal and social well-being: towards a conceptualization of the effects of cyberbullying / Soledad,bienestar social e individual: hacia una conceptualización de los efectos del cyberbullying     

Daniel Halpern  Martina Piña  Javier Vásquez 《Cultura y Educación》2017,29(4):703-727

This paper examines the effects of cyberbullying using a mixed method approach, by combining interviews, focus groups and a survey of 7,000 students. In the inductive stage, and following an axial coding analysis, we identified 153 concepts related to conflicts, which were divided into three thematic units to explain the greater impact of cyberbullying: (1) social distance; (2) privacy exposure; and (3) range of the material. The survey concluded that: (1) the victims of bullying and cyberbullying present higher levels of loneliness and lower levels of social well-being compared to non-bullied students, and those who were bullied in both channels presented higher levels of loneliness and lower levels of social well-being than those who were bullied in only one of them; (2) the victims of cyberbullying showed lower levels of individual well-being compared with those who had never been bullied, as with those who suffered face-to-face bullying. This difference was explained by testimonies indicating that most of the cyberbullying was related to intimate content, which has a higher impact on image perception.  相似文献   

Mexican Educators Survey on Anatomical Sciences Education and a Review of World Tendencies     

Yolanda Salinas-Alvarez  Alejandro Quiroga-Garza  Javier Humberto Martinez-Garza  Guillermo Jacobo-Baca  Pablo Patricio Zarate-Garza  Karla Valeria Rodríguez-Alanís  Santos Guzman-Lopez  Rodrigo Enrique Elizondo-Omaña 《Anatomical sciences education》2021,14(4):471-481

Anatomical sciences curricula have been under constant reform over the years, with many countries having to reduce course hours while trying to preserve laboratory time. In Mexico, schools have historically been autonomous and unregulated, and data regarding structure and methods are still lacking. A national survey was sent by the Mexican Society of Anatomy to 110 anatomical sciences educators. The questionnaire consisted of 50 items (open and multiple choice) for gross anatomy, microscopic anatomy, neuroanatomy, and embryology courses in medical schools across Mexico. A clinical approach was the most common course approach in all disciplines. Contact course hours and laboratory hours were higher in Mexican anatomy education compared to other countries, with the highest reported contact hours for embryology (133.4 ± 44.1) and histology (125 ± 33.2). There were similar contact hours to other countries for gross anatomy (228.5 ± 60.5). Neuroanatomy course hours (43.9 ± 13.1) were less than reported by the United States and similar to Saudi Arabia and higher than the United Kingdom. Dissection and microscopy with histological slides predominate as the most common laboratory activities. Traditional methods prevail in most of the courses in Mexico and only a few educators have implemented innovative and technological tools. Implementation of new methods, approaches, and curricular changes are needed to enhance anatomical sciences education in Mexico.  相似文献   

Nutritional intake in soccer players of different ages     

Ruiz F  Irazusta A  Gil S  Irazusta J  Casis L  Gil J 《Journal of sports sciences》2005,23(3):235-242

The purpose of this study was to evaluate the dietary practices of soccer players of different ages. The diets of the members of four soccer teams (mean ages of 14.0, 15.0, 16.6 and 20.9 years, respectively) were examined. Our results show that the caloric intake per kilogram of body mass was significantly higher among the youngest players when compared with the adult players (P < 0.05). The contribution of carbohydrates to total energy intake was lower than that recommended for athletes. This contribution decreased with age from 47.4% of total energy intake for the 14-year-olds to 44.6% for the adult players. No significant differences in protein or total fat intake were detected among the teams examined. Overall, our results show that the nutritional intake of the soccer players was not optimal, and that this intake was poorer among the adult players than among the adolescents. On the basis of our results, we recommended that nutritional education should be given to soccer players at an early age and should continue throughout adolescence, not only with a view to improving performance but also to promoting more healthy dietary practices in the long term.  相似文献   

The teaching and research relationship within an institutional evaluation     

Javier Vidal  Miguel A. Quintanilla 《Higher Education》2000,40(2):217-229

The authors present an analysis of the relationshipbetween research and teaching in universities. The aimis to determine to what extent this relationship isstrong enough to support the idea that teaching andresearch should be analyzed together from aninstitutional evaluation point of view. Two mainquestions are presented: (a) should research beevaluated from an institutional point of view? And, ifso, (b) which specific aspects of research activitiescan be evaluated within each institution?Empirical data have been obtained within the SpanishNational Program for the Evaluation of Quality ofUniversities and there are supplemented by interviews. Evidence is found of strong connections between research and teaching and in particular areasanalysis of the two dimensions together willhelp in designing better improvement strategies foruniversities.  相似文献   

Male professional tennis players maintain constant serve speed and accuracy over long matches on grass courts     

Javier Maquirriain  Roberto Baglione  Marcelo Cardey 《European Journal of Sport Science》2016,16(7):845-849

The potential effect of fatigue on stroke production in tennis players is still controversial. The aim of this study was to analyse the tennis serve speed and accuracy in prolonged male professional matches played on grass courts. We analysed tennis serve statistics from five-set Wimbledon matches (n?=?15; 30 players). Results showed that match duration averaged 208.3?±?28.3?min. The overall serve speed was 177.0?±?10.2?km/h in the first set and 176.1?±?11.7?km/h in the fifth set (p?=?.34). The difference of all accuracy values of first set serves was not significantly different from those of the fifth set: percentage of valid first serves, 63.1?±?11.1% vs. 62.3?±?11.8%, respectively (p?=?.78); percentage of “aces”, 11.2?±?9.1% vs. 10.0?±?8.9%, respectively (p?=?.39); percentage of “winners”, 2.6?±?7.6% vs. 1.2?±?2.2%, respectively (p?=?.36); percentage of “double faults”, 2.8?±?3.0% vs. 2.8?±?3.4% (p?=?.97). In conclusion, tennis players were able to maintain constant serve speed and accuracy over five-set matches played on grass courts. Professional tennis players are capable of overcoming fatigue and/or make movement adjustments to effectively perform complex technical strokes like the serve throughout matches played on grass courts lasting more than 3?h in average.  相似文献   

Spanish validation of the Basic Psychological Needs at Work Scale: A measure to predict teachers’ well-being in the workplace     

Ángel Abós Catalán  Javier Sevil Serrano  José Antonio Julián Clemente  José Martín-Albo Lucas  Luis García-González 《International Journal for Educational and Vocational Guidance》2018,18(2):127-148

The present study aimed to validate a Spanish-version of the Basic Psychological Needs at Work Scale (BPNWS-Sp) and to examine the associations between needs satisfaction and engagement and burnout in secondary education teachers. Using a sample of 584 secondary education teachers, the results supported the three-factor model, composite reliability, measurement invariance, and nomological validity of the BPNWS-Sp. This study contributes to validating the first instrument in Spanish to measure the satisfaction of the three BPNs separately in secondary education teachers. The measurement of teachers’ BPNs could effectively provide guidance for school policies to improve teaching and learning.  相似文献   

Financing innovation: A bibliometric analysis of the field     

Ana Milena Padilla-Ospina  Javier Enrique Medina-Vásquez  Jorge Alberto Rivera-Godoy 《Journal of Business & Finance Librarianship》2018,23(1):63-102

This article presents a bibliometric analysis of the financing of innovation during the period 2001–2016. Among the most prominent journals in the field are Research Policy, Technovation and Small Business Economics; among the most influential authors are Petersen, Hall, Himmelberg, Lerner and Brown; and the most connected documents are those by Hall (2002) and Brown, Fazzari, and Petersen (2009). The field is fragmented and uses a variety of financial theoretical models. Salient topics in the field are financial constraints, funding sources (internal and external), capital structure, venture capital and financing of technology companies.  相似文献