Latino High School Students’ Perceptions of Caring: Keys to Success     

Rubén Garza  Mary Esther Soto Huerta 《Journal of Latinos & Education》2014,13(2):134-151

This mixed methods investigation specifically examined Latino high school adolescents’ perceptions of teacher behaviors that demonstrate caring. A chi-square test was conducted to analyze the frequency of responses, and focus group interviews were conducted to expand on the results. The data indicated that although Latino male students were as likely to perceive the same behaviors Latina female students perceived as important or very important, a higher percentage of female students rated the same items as important. This investigation situates Latino high school adolescents’ voices as a pivotal agent to inform about the critical nature of caring for all students.  相似文献   

Extending the understanding of mobile banking adoption: When UTAUT meets TTF and ITM     

Tiago Oliveira  Miguel Faria  Manoj Abraham Thomas  Aleš Popovič 《International Journal of Information Management》2014

Mobile banking (mBanking) enables customers to carry out their banking tasks via mobile devices. We advance the extant body of knowledge about mBanking adoption by proposing a model for understanding the importance and relationship between the user perception of mBanking, initial trust in mBanking services, and the fit between the technology and mBanking task characteristics. We synergistically combine the strengths of three IS theories – task technology fit (TTF) model, unified theory of acceptance and usage of technology (UTAUT), and initial trust model (ITM). The model was tested in a study conducted in Portugal, one of the European Union (EU) countries with the highest mobile phone adoption. Based on the sample of 194 individuals we applied partial least squares (PLS) to test the conceptual model propose. The path significance levels were estimated using the bootstrapping method (500 resamples). The study found that facilitating conditions and behavioral intentions directly influence mBanking adoption. Initial trust, performance expectancy, technology characteristics, and task technology fit have total effect on behavioral intention. The paper offers valuable insights to decision-makers involved in the implementation and deployment of mBanking services. For researchers, the paper highlights the usefulness of integrating TTF, UTAUT and ITM in the development of a decision support framework to study the adoption of new technologies.  相似文献   

A microfluidic device to study cancer metastasis under chronic and intermittent hypoxia     

Miguel A. Acosta  Xiao Jiang  Pin-Kang Huang  Kyle B. Cutler  Christine S. Grant  Glenn M. Walker  Michael P. Gamcsik 《Biomicrofluidics》2014,8(5)

Metastatic cancer cells must traverse a microenvironment ranging from extremely hypoxic, within the tumor, to highly oxygenated, within the host''s vasculature. Tumor hypoxia can be further characterized by regions of both chronic and intermittent hypoxia. We present the design and characterization of a microfluidic device that can simultaneously mimic the oxygenation conditions observed within the tumor and model the cell migration and intravasation processes. This device can generate spatial oxygen gradients of chronic hypoxia and produce dynamically changing hypoxic microenvironments in long-term culture of cancer cells.  相似文献   

Towards an econophysics view of intellectual capital dynamics: from self-organized criticality to the stochastic frontier     

Bill?McKelveyEmail author  Maria Paz?Salmador  Patricio?Morcillo  José Miguel?Rodríguez-Antón 《知识管理研究与实践》2013,11(2):142-161

The paper begins with research studying the concept and nature of Intellectual Capital (IC), as well as how close IC firms are to the stochastic frontier. Then basic concepts of complexity theory – such as agents, self-organized criticality (SOC), connectivities, fractals, and power laws (PLs) – are used to distinguish between two kinds of IC firms’ success: traditional SOC applications to how firms maintain their position in a changing industry vs. how an IC firm (such as Apple) creates a new stochastic frontier. The research sets up PLs as indicators of whether or not firms and industries are SOC-effective and includes propositions about: (1) How IC firms benefit from complexity dynamics and SOC; (2) How PL distributions are indicators of efficacious SOC and adaptivity; and (3) Why IC attributes serve to create more transient dynamics pertaining to the stochastic frontier and the rest of the industry's rank/frequency distribution.  相似文献   

Hierarchical Text Categorization Using Neural Networks   总被引：8，自引：1，他引：7  

Miguel E. Ruiz  Padmini Srinivasan 《Information Retrieval》2002,5(1):87-118

This paper presents the design and evaluation of a text categorization method based on the Hierarchical Mixture of Experts model. This model uses a divide and conquer principle to define smaller categorization problems based on a predefined hierarchical structure. The final classifier is a hierarchical array of neural networks. The method is evaluated using the UMLS Metathesaurus as the underlying hierarchical structure, and the OHSUMED test set of MEDLINE records. Comparisons with an optimized version of the traditional Rocchio's algorithm adapted for text categorization, as well as flat neural network classifiers are provided. The results show that the use of the hierarchical structure improves text categorization performance with respect to an equivalent flat model. The optimized Rocchio algorithm achieves a performance comparable with that of the hierarchical neural networks.  相似文献   

Impact case studies: what accounts for the need for numbers in impact evaluation?     

Miguel Antonio Lim 《International Studies in Sociology of Education》2020,29(1-2):107-125

ABSTRACT