Monte Carlo study of multibarrier heterostructure switch

A multibarrier heterostructure GaAs/AlAs current switching diode has been investigated by Monte Carlo method. The switching phenomenon is based on electron tunnelling and thermoemission from the GaAs wells to the AlAs barriers, electron drift across the thin AlAs barriers followed by a subsequent impact ionisation in the undoped GaAs layers. The calculated switching voltage is close to 100 V for the diode involving four AlAs barriers at 300 K lattice temperature. The estimated switching time is in the order of 10 ps

The mechanisms of “incidental news consumption”: An eye tracking study of news interaction on Facebook

This exploratory study examines how participants incidentally consumed news on social media through an eye tracking analysis of their visual interaction with posts on Facebook. By interaction, we refer to the attention participants gave to news (measured through the time devoted to looking at the content); how they read these news items (measured through ocular movements on the screen); and the way they engaged with this content (measured through forms of participation such as liking, commenting, or sharing news). The data were triangulated through interviews with Facebook users and an analysis of the metrics of posts from Costa Rican news organizations on Facebook from 2017 to 2020. We draw on scholarship in communication studies and multimodal discourse analysis. We argue for a more nuanced approach to what study participants did when they incidentally encountered news on social media that focuses on mechanisms, that is, the specific procedures and operations that shape user interaction with news on Facebook (such as visual fixations on parts of news posts; the visual entry points through which they begin to interact with the news; the sequences that characterize how they navigate content; and the time they spend assessing various multimodal elements).Universidad de Costa Rica/[]/UCR/Costa RicaUCR::Vicerrectoría de Investigación::Unidades de Investigación::Ciencias Sociales::Centro de Investigación en Comunicación (CICOM)UCR::Vicerrectoría de Docencia::Artes y Letras::Facultad de Letras::Escuela de Filología, Lingüística y Literatur

Tourists’ perspectives on hard and soft services toward rural tourism destination competitiveness: Community support as a moderator

Rural tourism is an integrated part in the services field, and this industry has long been recognized as a valuable tool for economic development in rural destinations. However, the multiplying growth of rural tourism destinations has led to a stiff competition among the industry. Thus, the identification of tourists’ perspective on the hard and soft services components toward the development of rural tourism is a key element in surviving into the rapid tourism competition. The pivotal role of community support as an integral part of tourism product in ensuring sustainable development of rural tourism destination would also being the key indicator for the development of rural tourism. Hence, this study highlighted the importance of tourists’ perspective on hard services (tourism infrastructure and accommodation) and soft services (range of activities and special events) toward the competitiveness of rural tourism destination’s development with community support who act as a moderator. A total of 314 respondents comprising tourists who visited Kampung Semadang, Kampung Telaga Air, and Kubah National Park (Kampung Matang), Kuching, Sarawak has voluntarily participated in this study. To assess the developed model, SmartPLS 2.0 (M3) is applied based on path modeling and bootstrapping. Interestingly, the findings revealed that tourists are more concerned about the quality of accommodation, infrastructure, range of activities, and special events for the development of tourism destination competitiveness in rural tourism destination. In addition, tourists also believed that the existence of community support is crucial in moderating the relationship between accommodation quality and tourism destination competitiveness. This study further discussed on the implications of the findings, limitations, and directions for future research