Hsin-Chang Yang, Chung-Hong Lee and Wen-Sheng Liao
Measuring the similarity between two resources is considered difficult due to a lack of reliable information and a wide variety of available information regarding the resources…
Abstract
Purpose
Measuring the similarity between two resources is considered difficult due to a lack of reliable information and a wide variety of available information regarding the resources. Many approaches have been devised to tackle such difficulty. Although content-based approaches, which adopted resource-related data in comparing resources, played a major role in similarity measurement methodology, the lack of semantic insight on the data may leave these approaches imperfect. The purpose of this paper is to incorporate data semantics into the measuring process.
Design/methodology/approach
The emerged linked open data (LOD) provide a practical solution to tackle such difficulty. Common methodologies consuming LOD mainly focused on using link attributes that provide some sort of semantic relations between data. In this work, methods for measuring semantic distances between resources using information gathered from LOD were proposed. Such distances were then applied to music recommendation, focusing on the effect of various weight and level settings.
Findings
This work conducted experiments using the MusicBrainz dataset and evaluated the proposed schemes for the plausibility of LOD on music recommendation. The experimental result shows that the proposed methods electively improved classic approaches for both linked data semantic distance (LDSD) and PathSim methods by 47 and 9.7%, respectively.
Originality/value
The main contribution of this work is to develop novel schemes for incorporating knowledge from LOD. Two types of knowledge, namely attribute and path, were derived and incorporated into similarity measurements. Such knowledge may reflect the relationships between resources in a semantic manner since the links in LOD carry much semantic information regarding connecting resources.
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Xieling Chen, Shan Wang, Yong Tang and Tianyong Hao
The purpose of this paper is to explore the research status and development trend of the field of event detection in social media (ED in SM) through a bibliometric analysis of…
Abstract
Purpose
The purpose of this paper is to explore the research status and development trend of the field of event detection in social media (ED in SM) through a bibliometric analysis of academic publications.
Design/methodology/approach
First, publication distributions are analyzed including the trends of publications and citations, subject distribution, predominant journals, affiliations, authors, etc. Second, an indicator of collaboration degree is used to measure scientific connective relations from different perspectives. A network analysis method is then applied to reveal scientific collaboration relations. Furthermore, based on keyword co-occurrence analysis, major research themes and their evolutions throughout time span are discovered. Finally, a network analysis method is applied to visualize the analysis results.
Findings
The area of ED in SM has received increasing attention and interest in academia with Computer Science and Engineering as two major research subjects. The USA and China contribute the most to the area development. Affiliations and authors tend to collaborate more with those within the same country. Among the 14 identified research themes, newly emerged themes such as Pharmacovigilance event detection are discovered.
Originality/value
This study is the first to comprehensively illustrate the research status of ED in SM by conducting a bibliometric analysis. Up-to-date findings are reported, which can help relevant researchers understand the research trend, seek scientific collaborators and optimize research topic choices.
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Yanhong Tian, Chunqing Wang, Xiaodong Zhang and Deming Liu
In this paper, the interaction kinetics between eutectic PbSn solder and Au/Ni/Cu metallisation of plastic ball grid array packages during laser reflow bumping were investigated…
Abstract
In this paper, the interaction kinetics between eutectic PbSn solder and Au/Ni/Cu metallisation of plastic ball grid array packages during laser reflow bumping were investigated. The effects of processing variables, including laser reflow power and time, on the morphology of the intermetallic compounds formed at the solder/pad interface were studied by scanning electron microscopy and energy dispersive X‐ray spectrometry. Furthermore, dissolution and diffusion of Au and Sn inside the solder bump within the duration of the laser heating was analysed by Auger electron spectroscopy (AES). The results reveal that the morphology of the intermetallic compounds was strongly influenced by the laser input energy. The AES results showed that Au atoms dissolved rapidly into the solder after the solder was melted.
Sébastien Lalléchére, Jamel Nebhen, Yang Liu, George Chan, Glauco Fontgalland, Wenceslas Rahajandraibe, Fayu Wan and Blaise Ravelo
The purpose of this paper is to study, a bridged-T topology with inductorless passive network used as a bandpass (BP) negative group delay (NGD) function.
Abstract
Purpose
The purpose of this paper is to study, a bridged-T topology with inductorless passive network used as a bandpass (BP) negative group delay (NGD) function.
Design/methodology/approach
The BP NGD topology under study is composed of an inductorless passive resistive capacitive network. The circuit analysis is elaborated from the equivalent impedance matrix. Then, the analytical model of the C-shunt bridged-T topology voltage transfer function is established. The BP NGD analysis of the considered topology is developed in function of the bridged-T parameters. The NGD properties and characterizations of the proposed topology are analytically expressed. Moreover, the relevance of the BP NGD theory is verified with the design and fabrication of surface mounted device components-based proof-of-concept (PoC).
Findings
From measurement results, the BP NGD network with −151 ns at the center frequency of 1 MHz over −6.6 dB attenuation is in very good agreement with the C-shunt bridged-T PoC.
Originality/value
This paper develops a mathematical modeling theory and measurement of a C-shunt bridged-T network circuit.
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The purpose of this chapter is to critically review the Korean Official Development Assistance (ODA) policy in terms of its context, actors, structures, and values so as to find…
Abstract
The purpose of this chapter is to critically review the Korean Official Development Assistance (ODA) policy in terms of its context, actors, structures, and values so as to find how these characteristics are reflected in the education ODA of Korea. Previous studies, documents of Korean Government, and ODA-related statistics are reviewed. Self-confident in being transformed from a poor recipient country to a DAC donor, Korean government emphasizes the so-called Korean ODA Model in sharing its economic development knowledge and experiences with the developing countries. Despite the coordination effort by Prime Minister’s Office, government ministries tend to pursue its own ODA policies, while the finance ministry and the ministry of foreign affairs play major roles. As a result Korean ODA is economy-oriented, fragmented, and uncoordinated in planning and implementation. This study has found that such characteristics of Korean ODA are also reflected in the education ODA. For instance, TVET and higher education are the priority, while basic education is neglected, and the education ministry has its own ODA policies and programs. Outside studies on Korean ODA policy is rather scarce, furthermore, critical reviews other than policy advocacy are hard to find, particularly in English. This study will be a good start for further ones to understand the Korean ODA policy including education.
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Y.P. Tsang, K.L. Choy, P.S. Koo, G.T.S. Ho, C.H. Wu, H.Y. Lam and Valerie Tang
This paper aims to improve operational efficiency and minimize accident frequency in cold storage facilities through adopting an effective occupational safety and health program…
Abstract
Purpose
This paper aims to improve operational efficiency and minimize accident frequency in cold storage facilities through adopting an effective occupational safety and health program. The hidden knowledge can be extracted from the warehousing operations to create the comfortable and safe workplace environment.
Design/methodology/approach
A fuzzy association rule-based knowledge management system is developed by integrating fuzzy association rule mining (FARM) and rule-based expert system (RES). FARM is used to extract hidden knowledge from real operations to establish the relationship between safety measurement, personal constitution and key performance index measurement. The extracted knowledge is then stored and adopted in the RES to establish an effective occupational and safety program. Afterwards, a case study is conducted to validate the performance of the proposed system.
Findings
The results indicate that the aforementioned relationship can be built in the form of IF-THEN rules. An appropriate safety and health program can be developed and applied to all workers, so that they can follow instructions to prevent cold induced injuries and also improve the productivity.
Practical implications
Because of the increasing public consciousness of occupational safety and health, it is important for the workers in cold storage facilities where the ambient temperature is at/below 10°C. The proposed system can address the social problem and promote the importance of occupational safety and health in the society.
Originality/value
This study contributes to the knowledge management system for improving the occupational safety and operational efficiency in the cold storage facilities.
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Man Fung Lo, Wai Chung James Ng, Chi Fai Gary Ng and Mei Lan Peggy Ng
The demand for ambulance services in Hong Kong is increasing and first aid plays an important role in saving lives. The government recognized first aid training courses offered by…
Abstract
Purpose
The demand for ambulance services in Hong Kong is increasing and first aid plays an important role in saving lives. The government recognized first aid training courses offered by four organizations. This study aims to review and discuss the past, present and future of first aid and health training in Hong Kong.
Design/methodology/approach
This study adopted a case study approach to investigate the operations and development of the first aid and health training in one of the largest training providers in Hong Kong. Publicly available secondary data, including annual reports, websites, newspapers and social media, were collected and analysed. Using the thematic analysis procedure, researchers familiarised the data collected, generated initial codes, searched for themes, reviewed themes, defined themes and reported the results.
Findings
Through data analysis, researchers identified six themes which help to address the research questions regarding the types of first aid and health training courses, quality issue, awareness of first aid in the community and the future delivery of first aid training.
Practical implications
This study provided two implications on both micro and macro levels. At the micro level, training providers can enhance training quality by adopting technology. At the macro level, training providers can continue to advocate and facilitate the integration of first aid into the formal education curriculum. The last section addressed the limitations of this study and provided future research directions.
Originality/value
This study provided insights about the development of the first aid and health education and training. Health-care training providers and policymakers could benchmark the findings from this study and develop appropriate measures for promoting health education.