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Article
Publication date: 18 January 2013

Chang Keun Lee, Jung Keun Ahn, Cheul Ro Lee, Daesuk Kim and Byung Joon Baek

The purpose of this paper is to investigate the thermal behaviors of high power LED packages to enhance the thermal performances of low temperature co‐fired ceramic chip on board…

Abstract

Purpose

The purpose of this paper is to investigate the thermal behaviors of high power LED packages to enhance the thermal performances of low temperature co‐fired ceramic chip on board (LTCC‐COB) package. Thermal analysis demonstrated an improved LTCC‐COB package design that is comparable to a metal lead frame package with low thermal resistance.

Design/methodology/approach

The LED device developed in this study is a LTCC package mounted directly on the metal PCB. A numerical simulation was performed to investigate the thermal characteristics of the LED module using the finite volume method, which is embedded in commercial software (Fluent V.6.3). Thermal resistance and temperature measurement validate the simulated results.

Findings

The effect of the thickness of the die attach material on the thermal resistance was dominant due to low thermal conductivity, and the junction temperature decreased significantly with slight increases in thermal conductivity, especially when the value was less than 5 W/mK. The results reveal that the thermal resistance of MCPCB is about 49 per cent‐58 per cent of the junction to board thermal resistance. The thermal model results showed good agreement with experimental results.

Originality/value

The developed model overcomes the large thermal resistance of a conventional LTCC package for high power LED module. The extensive results have demonstrated an improved thermal design, optimal dimensions of each component and boundary conditions for high power LTCC‐COB type package.

Details

Microelectronics International, vol. 30 no. 1
Type: Research Article
ISSN: 1356-5362

Keywords

Article
Publication date: 18 December 2020

Tauchid Komara Yuda

The objective of this paper is to understand changes and progress of the Korean childcare regime by examining the evolutional process of childcare initiatives that were developed…

Abstract

Purpose

The objective of this paper is to understand changes and progress of the Korean childcare regime by examining the evolutional process of childcare initiatives that were developed since the Japanese colonial rule.

Design/methodology/approach

This study employed a qualitative-based research design with a particular emphasis on explanatory research. Meanwhile, the data were gathered through the peer-reviewed literature and reports.

Findings

The findings indicate that Korea has had three types of childcare regimes: effective-informal, productivist and inclusive-liberal orientation. It also pinpoints that while the care regime development followed the European regime, the egalitarian society, which is a social prerequisite for modern welfare state-building, has not yet been fully established. This paradoxical situation eventually impedes the development of universal childcare aimed at promoting gender equality and a work-life balance.

Originality/value

This article offers a model and characteristics of the Korean childcare regime dating back to the Japanese colonial period up until the Moon Jae-In administration, where it still receives less attention in most of the social policy literature (see Table 1).

Details

International Journal of Sociology and Social Policy, vol. 41 no. 9/10
Type: Research Article
ISSN: 0144-333X

Keywords

Book part
Publication date: 16 October 2017

Shi-Chul Lee

Korea is a highly centralized country where most administrative functions are carried out by the central government in Seoul. Increasingly, however, local governments have been…

Abstract

Korea is a highly centralized country where most administrative functions are carried out by the central government in Seoul. Increasingly, however, local governments have been given greater autonomy in their operations. This chapter examines how the ideal values of political decentralization have interacted with the country’s local bureaucracy, which inherently has dark side in itself. The focus is on how local government employees have contributed, or responded, to the democratic change of their communities, particularly since the 1980s. At the outset, the experiences of Korea’s decentralization and local autonomy are briefly reviewed. It is then examined how the bureaucrats have played in the process of democratization in terms of three features: bureaucratic power, scope, and culture. Institutionalizing competitive local bureaucracy contributed to reduce the disparity between capital regions (Seoul and its surrounded area) and noncapital regions (locals). Empowering local bureaucracy to allow own localized decision-making process was the first move of Korean governance.

Details

The Experience of Democracy and Bureaucracy in South Korea
Type: Book
ISBN: 978-1-78714-471-2

Keywords

Article
Publication date: 19 May 2020

Tauchid Komara Yuda

Political analyses of the East Asian welfare state development often stress the importance of the power resource model, in which vibrant coalitions between the leftist party…

Abstract

Purpose

Political analyses of the East Asian welfare state development often stress the importance of the power resource model, in which vibrant coalitions between the leftist party, interest groups, civil society and working-class unions have become driving factors in producing generous welfare outcomes. Challenging such analyses, this article discusses the convergence of the political attitude between political actors who are increasingly homogeneous (supportive) when it comes to the universal welfare state notion by focussing on childcare in South Korea.

Design/methodology/approach

By using desk review of the peer-reviewed literature and reports, this article investigates the causation for why political parties with different political ideologies were keen on extending childcare programs and its outcome in addressing the existing demographic problems in Korea.

Findings

Although the collective movement, especially in the 1990s and 2000s, had given important contributions to the early development of childcare in South Korea, more breakthroughs in childcare features were precisely and rapidly developed after politicians from different spectrums of political affiliations converged in their supportive attitude of the universal welfare. The driving factors of political convergence itself are not merely due to electoral competition or political activism; furthermore, it can be linked to the increased global institution involvement in domestic policy with extensive permeability, which, have ruined domestic policy development maintained for ideological reasoning and bring in more popular policy setting.

Originality/value

This article contributes to the growing literature on the political aspect of East Asian social policy studies, which goes beyond the traditional power resource analysis and makes a novel contribution to the childcare policy studies.

Details

International Journal of Sociology and Social Policy, vol. 40 no. 7/8
Type: Research Article
ISSN: 0144-333X

Keywords

Open Access
Article
Publication date: 25 December 2023

Shahid Rasool, Roberto Cerchione, Piera Centobelli, Eugenio Oropallo and Jari Salo

This study aims to highlight the impact of altruistic-self and hunger awareness on socially responsible food consumption through the lens of self-awareness and self-congruity…

Abstract

Purpose

This study aims to highlight the impact of altruistic-self and hunger awareness on socially responsible food consumption through the lens of self-awareness and self-congruity theories due to the great challenge of Sustainable Development Goal 2: Zero Hunger.

Design/methodology/approach

A survey was conducted with a sample of 812 respondents. Exploratory Factor Analysis (EFA) and Confirmatory Factor Analysis (CFA) confirm each variable's structure through the measurement model and test the hypothesis to support a structural model.

Findings

The results highlight that the combination of altruistic-self and hunger awareness (AS-HA congruence) drives consumers to execute socially responsible food consumption. Meanwhile, consumers' food-saving attitude mediation translates to the attitude towards responsible and ethical use increasing socially responsible food consumption, a contextual development in the theory of congruence. Conversely, hunger awareness is not confirmed as significantly influencing socially responsible food consumption.

Practical implications

This research provides valuable insights for academicians and practitioners in developing food waste management strategies that can be implemented to reduce food wastage.

Originality/value

Food waste is a global concern and is challenging for many manufacturing, distribution and individual wastage levels. However, food wastage by consumers is one of the most critical problems which can be minimised with awareness and attitudinal changes in behaviour as a form of socially responsible consumption.

Book part
Publication date: 15 March 2013

Nam-Hwa Kang

Purpose – The purpose of the research was to examine the process of new teacher evaluation policy development in South Korea, in order to gain insight into how a controversial…

Abstract

Purpose – The purpose of the research was to examine the process of new teacher evaluation policy development in South Korea, in order to gain insight into how a controversial policy could be established in education. Research questions were about the process of the policy development, political actors involved and their influences, and the meaning of teacher evaluation in the newly established teacher evaluation policy.Methodology – The study uses a qualitative and descriptive-analytical process from a hermeneutics perspective that views policy as text to be interpreted. This perspective allows policy to be connected to a larger social context through interpretations of text. The main data sources included policy documents, statements by various organizations, research reports, and public media artifacts produced between 2000 and 2012. For data analysis, constant comparison and content analysis methods were used.Findings – The findings show that the process of developing a teacher evaluation system demonstrated an unsuccessful attempt to apply the Habermasian notion of discursive democracy. Relevant stakeholders were invited to deliberate on the reform, but official meetings ended prematurely without consensus. In the end, the government proceeded without full support of any stakeholders. During the deliberation process, teacher organizations and parent groups demonstrated conflicting perspectives on teacher work and the new evaluation system only partially accommodated both perspectives. The effectiveness of the new evaluation system remains to be researched.Value – The policy development process and the evaluation system shown in this study should inform similar efforts in other contexts.

Details

Teacher Reforms Around the World: Implementations and Outcomes
Type: Book
ISBN: 978-1-78190-654-5

Keywords

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