• Resources Recycling
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• v.24 no.4
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• pp.38-49
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• 2015

The importance of recycling came to the fore by increasing of waste electrical and electronic equipment(WEEE) generation. Small WEEE recycling in particular represents a big challenge in Korea because it has various items and components. Main materials of small WEEE are typically well known for metals (copper, iron, aluminum, etc.), PCBs and plastics. Not only Korea but also overseas, the laws for small WEEE were in effect in order to recycle effectively, but the technology is not catched up with the regulation which has to recycle an allocated account of WEEE. In addition, recycling technologies and processes for small WEEE are not developed enough to recycling center properly. In that sense, if we develope the recycling process, have not only technology competitiveness but also resource conservation, improving the environment and economic profits. Therefore, through the analysis of economic value of recycled small WEEE, and current technologies both domestically and internationally, we design conceptual recycling process of small WEEE, and consider the way forward.

• The KIPS Transactions:PartD
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• v.11D no.1
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• pp.195-202
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• 2004

This paper describes the development of a window manager based on the real time operating system, Qplus-p, for small internet appliance. Current window managers for small internet appliance are originally developed for desktop environment and then modified for embedded systems. So they have inadequate functions for small internet appliances and do not perfectly support Hangul. The Qplus-P window manager adds the Hangul processing function to Matchbox window manager, a royalty-free window manager for small Internet appliance and provides a new Hangul input method called Amikey. Input mode can be changed automatically from Hangul mode to English mode and vice versa by Amikey. In addition, Qplus-P window manager provides Hangul supported basic applications such as web browser, e-mail client, MP3 player. We developed the window manager by porting open sources to target system after adding Hangul supported functions to them.

• Resources Recycling
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• v.22 no.4
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• pp.12-21
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• 2013

Waste electrical and electronic equipment(WEEE or E-waste) is one of the fastest growing waste stream in Korea. The proper management of such equipment has become of major concern for solid waste professionals because of the large growth of the waste stream and the presence of a myriad of toxic materials in it. In this paper, in order to evaluate the economical value of the recycling metallic materials from the E-waste, big size electrical home appliances, small size electrical home appliances, end of life hand phone and PCB(printed circuit board) were reviewed.

• Journal of KSNVE
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• v.11 no.1
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• pp.15-20
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• 2001

홴(fan)은 모터로부터 회전력을 전달받아 공기동력인 풍량과 정압을 발생시켜 발열부품의 냉각 및 환기용으로 산업현장과 가전기기에서 널리 사용되고 있다. 과거 산업현장에서 주로 사용되어지던 송풍기가 가전기기에 적용되면서 홴에 대한 관심이 더욱 증폭되었는데 특히 국내에서 독자적인 소형 홴 연구가 본격적으로 시작된 것도 이 때이다. 가전에서의 홴은 고효율 뿐 만 아니라 주로 저소음화에 대한 연구에 초점이 맞추어져 있는데 이는 기존의 산업현장의 송풍기가 주로 풍량과 정압에 목표를 두고 개발해 왔던 것도 한 이유지만 구조적인 안정성 때문에 소음을 고려한 설계가 한계가 있었기 때문으로 저소음홴에 대한 응용기술이 충분히 발달하지 못했기 때문에 송풍기 기술을 그대로 받아들인 초창기 가전용홴은 소음이 높았다. 또한 가전기기는 모든 연령층이 사용하기 때문에 소음이 큰 제품은 항상 소비자 클레임의 원인이 되기 때문이다.(중략)

• Product Safety
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• s.67
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• pp.8-13
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• 1999

• Product Safety
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• s.49
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• pp.57-69
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• 1996

• Resources Recycling
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• v.25 no.1
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• pp.31-39
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• 2016

Small household appliances such as electric rice cooker, a vacuum cleaner, an electric fan, etc. are diverse and complex due to the materials and components and waste streams from the manufacturing processes. In the present study, physical characterization of small e-wastes was analyzed on major items including electric rice cooker after manual dismantling. Small household appliances is an important potential source of waste plastic, however, recycling plastics from small e-waste is still unusual. The present communication gives results of separation processes on black plastics and the limitations of these sorting processes in used small household appliances.

• Journal of KIISE:Computing Practices and Letters
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• v.10 no.3
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• pp.231-242
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• 2004

Remote control and monitoring of information appliances require RTOS and TCP/IP network module to communicate each other. Traditional TCP/IP protocol stacks, however, require relatively large resources to be useful in small 8 or 16-bit systems both in terms of code size and memory usage. It motivates design and implementation of micro TCP/IP that is lightweight for embedded systems. Micro embedded web server is also required to control and monitor information appliances through the Web. In this paper, we design and implement micro TCP/IP and Web server for information appliances. For this goal, we investigate requirements for the interoperability of embedded systems with the Internet and the Web-based control of embedded systems. Next, we compare our micro TCP/IP protocol stack with that of RTIP and QPlus in terms of object code size and performance. The size of micro TCP/IP protocol stack can be reduced by 3/2 and 1/4, respectively, comparing with that of RTIP and QPlus. We also show that the performance of our micro TCP/IP is similar to that of RTIP and QPlus since it handles 2.9Mbps when delayed ACK is not adapted.

• 유체기계공업학회:학술대회논문집
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• 2002.12a
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• pp.161-164
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• 2002

Present condition of small fan used in appliances and IT industry is briefly reviewed. Here, fans used in refrigerator, air-conditioner, vacuum cleaner, microwave oven and computer are surveyed. Also some comments about the issue of each fan is described.

• Product Safety
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• s.51
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• pp.67-67
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• 1996