Comparative Study on m-Learning Usage Among LIS Students from Hong Kong, Japan and Taiwan

Mobile learning (m-learning) is gaining its importance in recent years. For libraries, it is inevitable to adapt to this trend and provide various information services and support for m-learning. This paper studies the m-learning usage of Library and Information Science (LIS) students, who will be the new blood for the library in future. In this paper, we invited 267 subjects from Hong Kong, Japan, and Taiwan to participate in our online survey. We found that LIS students from these regions do adopt communication tools and social media for m-learning. However, they less frequently use their smartphones for academic reading. Plus, they rely more on search engines for fulfilling their information needs instead of library resources. We also found that the lack of a mobile version of the library website constitutes a significant barrier in m-learning, but the lack of mobile apps is relatively acceptable by the respondents. The result of this study shows that there are no big differences in m-learning usage among the three regions, except that LIS students from Hong Kong are accessing the learning management platforms via their smartphones more frequently compared to students from Japan and Taiwan.postprin

Use of smartphones by art and design students for accessing library services and learning

Purpose – The purpose of this paper is to explore art and design students’ use of smartphones for accessing library services and learning at the Hong Kong Design Institute (HKDI). Design/methodology/approach – A questionnaire survey involving 51 HKDI students was conducted to examine the students’ utilization of apps and the internet on mobile devices to find information for the purpose of academic learning, social networking, and collaborative learning. Findings – Survey results showed that while the HKDI students were all smartphone owners and active users of such mobile communication devices, only a minority of them “frequently” use these mobile devices for formal learning purposes. They demonstrated a keen preference to use search engines, social communications, and other diverse use of smartphones. Except for research and image/audio-visual needs, the rest of their needs and usage behaviour is similar to mainstream university students. Practical implications – The results suggest opportunities for the libraries to develop services and facilities that could better fulfil students’ information needs, and to improve the network coverage outside the library. Originality/value – This is probably the first study of its kind to explore art and design students’ use of smartphones for learning needs. In particular, the recent capability of smartphones and mobile internet speed are comparable with desktops, it is vital to re-examine the much changed environment and user needs.postprin

Heuristic Usability Evaluation of University of Hong Kong Libraries' Mobile Website

As mobile technology grows rapidly, more and more students use mobile devices for educational purposes. Under this circumstance libraries, especially academic libraries, should try to expand their services and design mobile websites to meet users' needs. The history of mobile library websites is relatively short, especially in Asia. Usability evaluation of mobile library websites is a new issue for study. As such, this paper evaluates the usability of the University of Hong Kong Library (HKUL) mobile website as a case study by benchmarking against two other universities (the Harvard University and the Chinese University of Hong Kong), according to the ten usability heuristics developed by Nielsen (1994). The evaluation result shows that the mobile website contains some usability issues in 5 heuristics, such as unable to inform users the waiting time, some information not provided in a logical way, some consistency problems in displaying contents, lack of advanced searching for expert users, and inadequate helpful error message. The weakness found in this way provides useful hints in making improvement to mobile website. The design of the HKUL mobile website is quite similar to other mobile library websites, and thus, the results are quite useful for many other academic libraries

Information seeking behaviour and purchasing decision: case study in digital cameras

This case study explores the information seeking behaviour of digital camera consumers based on Assael’s consumer information acquisition and processing model. 135 responses were received from potential target group who had purchased or was planning to purchase digital cameras. Findings show that respondents who had not purchased digital camera before tended to seek for related information and generally spent more time on the search. Motivation of information seeking triggered by risk and uncertainty is also supported by resulting data .Significant difference was found in information seeking and time spent on the search based on different education attainment and income level of consumers. These results give hints to promoters to outline strategies for capturing potential customers based on their information seeking behaviour, as well as highlight informational supports that could be provided by relevant information agencies such as consumer councils and public libraries

Gravitational Test beyond the First Post-Newtonian Order with the Shadow of the M87 Black Hole

The 2017 Event Horizon Telescope (EHT) observations of the central source in M87 have led to the first measurement of the size of a black-hole shadow. This observation offers a new and clean gravitational test of the black-hole metric in the strong-field regime. We show analytically that spacetimes that deviate from the Kerr metric but satisfy weak-field tests can lead to large deviations in the predicted black-hole shadows that are inconsistent with even the current EHT measurements. We use numerical calculations of regular, parametric, non-Kerr metrics to identify the common characteristic among these different parametrizations that control the predicted shadow size. We show that the shadow-size measurements place significant constraints on deviation parameters that control the second post-Newtonian and higher orders of each metric and are, therefore, inaccessible to weak-field tests. The new constraints are complementary to those imposed by observations of gravitational waves from stellar-mass sources

Constraints on black-hole charges with the 2017 EHT observations of M87∗

Our understanding of strong gravity near supermassive compact objects has recently improved thanks to the measurements made by the Event Horizon Telescope (EHT). We use here the M87∗ shadow size to infer constraints on the physical charges of a large variety of nonrotating or rotating black holes. For example, we show that the quality of the measurements is already sufficient to rule out that M87∗ is a highly charged dilaton black hole. Similarly, when considering black holes with two physical and independent charges, we are able to exclude considerable regions of the space of parameters for the doubly-charged dilaton and the Sen black holes. © 2021 authors. Published by the American Physical Society

Constraints on black-hole charges with the 2017 EHT observations of M87*

International audienceOur understanding of strong gravity near supermassive compact objects has recently improved thanks to the measurements made by the Event Horizon Telescope (EHT). We use here the M87* shadow size to infer constraints on the physical charges of a large variety of nonrotating or rotating black holes. For example, we show that the quality of the measurements is already sufficient to rule out that M87* is a highly charged dilaton black hole. Similarly, when considering black holes with two physical and independent charges, we are able to exclude considerable regions of the space of parameters for the doubly-charged dilaton and the Sen black holes