Correlates of monotonic response patterns in online ratings of a university course

This study examines the prevalence, contexts, and demographic correlates of monotonic response patterns (MRPs) in online student evaluations. Results of two-level hierarchical generalized linear models show evidence of careless monotonic responses to a survey administered to students enrolled in a university-level foreign language course in the Republic of Korea. All else being equal, freshmen and students in classes with fewer survey participants were more likely to choose monotonic response patterns in course evaluations. Possible factors at work in generating MRPs are identified and discussed. The severity of the MRP problem in online ratings underscores the importance for administrators to consider possible validity threats in student evaluations before using them as tools to inform instructional and administrative decisions. It is also important to design course evaluation surveys in such a way as to minimize careless responses and to identify means to induce more thoughtful responses from college students.     

Network-adaptive HD MPEG-2 video streaming with cross-layered channel monitoring in WLAN

INTRODUCTION Video streaming service nowadays enjoys ex- plosive adoptions over all kinds of underlying net- works. To enjoy the freedom of tether-less connection over the wireless local area network (WLAN), we need to overcome many challenges of unstable wire- less channel due to fading, interference and so on. The scarce and fluctuating available bandwidth (together with time-varying delays and random/burst losses) can cause the video quality at the streaming client to be seriously deg…     

Wireless Cities: Local Governments' Involvement in the Shaping of Wi-Fi Networks

This study examines the role of local government in the deployment of municipal Wi-Fi networks from the perspective of path dependency and social shaping of technology. By employing a case study method, the study investigated ways in which municipal networks in three cities in the United States were constructed and operated. The study found that the technology models developed from each city's past experiences in communication technologies played an essential role in the rollout of the current Wi-Fi networks. It also uncovered that social and political factors accounted for the different characteristics of each city's network implementation.     

Trends in Autism Research: A Systematic Journal Analysis

Autism Spectrum Disorder (ASD) is a lifelong disability for which prevalence rates continue to increase. Persons with ASD vary widely in both severity of disability and services required. Therefore it is important to identify trends in research and evaluate progress in the field. The current study uses a journal analysis to evaluate research over a 12 year period in three prominent autism focused research journals: Focus on Autism and Other Developmental Disabilities, Autism: The International Journal of Research and Practice, and Journal of Autism and Developmental Disorders. Findings include identification of trends in research designs, sample characteristics, and interventions.     

Using Industry Experiences to Promote Change in the Types of Instructional Strategies Used by Secondary Science Teachers

Journal of Science Teacher Education -     

An integrated framework for RFID adoption and diffusion with a stage-scale-scope cubicle model: A case of Indonesia

This study presents a comprehensive framework to identify dynamic radio frequency identification (RFID) adoption and diffusion from three different perspectives: stages of adoption, levels of analysis, and domain of issues. The main concern of this study is stages of adoption, which covers three phases in respect of the maturity of the RFID project and the sophistication of business applications and RFID technology. The level of analysis involves different units of analysis beyond the organization level, including the industry- and country-level, which is lacking in the current literature. To understand dimensions of RFID issues, a strategy, technology, organization, people and environment (STOPE) based approach was applied. An extensive review of prior literature was conducted to find various RFID success factors and the Delphi method was applied to find positions of these factors within the framework. Based on the Delphi, some factors belong to early stage of adoption, and some others persist in the later stages of adoption. At the country level, factors such as RFID national policy, R&D policy and income per capita were accepted by most experts at the preliminary and intermediate stage; strategy and environment were accepted as important domains. To find practical implications of the framework, a case study of Indonesia was conducted at each level of analysis. Analytic hierarchy process (AHP) was applied to identify most important factors and important domains of issues with respect to the factors from the Delphi results. At country level, RFID policy, vision of leadership and RFID potential market are the most important factors; strategy and environment are the most important domains.     

Survival analysis for Hispanic ELL students’ access to postsecondary schools: discrete model or Cox regression?

Survival analysis is an advanced statistical method to investigate the occurrence and the timing of an important event such as school access, dropout, and graduation in a longitudinal framework. The aim of our study is to provide practical guidelines for empirical researchers in choosing an appropriate survival analysis model. For this goal, this study chose two major survival analytical models of a discrete-time hazard model and a Cox regression model and compared analytical outcomes considering time metrics, as well as sample sizes and censoring proportions. In the analytical model, the combined specifications of varying factors using two models were adopted to analyse the Educational Longitudinal Study of 2002. We chose the college access of Hispanic English Language Learners to understand the importance of adopting a proper survival model to examine the educational outcome in the educational context. Importantly, we considered the hazard probability for the target event in the model specification which is a fundamental yet often neglected component of survival analysis. We recommended discrete models for the cases with a smaller number of time points, larger time metrics, larger sample size, and smaller proportions of censored observations.