• Journal of the Korea Academia-Industrial cooperation Society
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• v.8 no.1
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• pp.41-49
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• 2007

RFID in which subminiature IC chip with the indentified information is built a core technique that can recognize, trace and manage various information of an object using radio frequency in the age of Ubiquitous. Several pressing matters about an infringement of Privacy and a security of private information should be settled as soon as possible because an information of specific circumstance can be collected and used without any awareness by others as well as a private information. In addition, various algorithms with high level of security, which is normally used in wire, can be hardly applied to RFID tag because of a lot of restrictions of tag. In this report, designed-RFID tag based on the standard of ISO/IEC 18000-6 and the problems which originated from the technical procedure of that design were analyzed, and the algorithm which could be applied to the designed-tag was also investigated.

• The KIPS Transactions:PartC
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• v.13C no.4 s.107
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• pp.415-426
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• 2006

The essential characteristic of ubiquitous is context-awareness, and that means ubiquitous computing can automatically process the data that change according to space and time, without users' intervention. However, in circumstance of context awareness, since location information is able to be collected without users' clear approval, users cannot control their location information completely. These problems can cause privacy issue when users access their location information. Therefore, it is important to construct the location information system, which decides to release the information considering privacy under the condition such as location, users' situation, and people who demand information. Therefore, in order to intercept an outflow information and provide securely location-based information, this paper suggests a new system based CS-RBAC with the existing LBS, which responds sensitively as customer's situation. Moreover, it accommodates a merit of PCP reflecting user's preference constructively. Also, through privacy weight, it makes information not only decide to providing information, but endow 'grade'. By this method, users' data can be protected safely with foundation of 'Role' in context-aware circumstance.

• Fire Science and Engineering
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• v.24 no.1
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• pp.72-80
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• 2010

This study suggests ubiquitous railway disaster prevention system that gearing Ubiquitous Sensor Network system information take to the subway fire accident information which emergency response procedure as occurring subway fire accident scenario. Also it is proposed that emergency response system though fire scenario. collected Information was analyzed each system over providing information and it is designed to exchanging information structure though relation system. The ubiquitous railway disaster prevention system basically consists by four unit stages as prevention, preparedness, response and recovery system. Especially, in this system can supply real time accident information to the relevant government offices and public through forecasting and warning system by utilizing recognition of the five senses in case of accident. also, it is build that to make decisions as linking 2-dimension and 3-dimension space information interface of ubiquitous sensor networks and expected scenarios.

• Journal of Korean Medical classics
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• v.20 no.1
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• pp.75-84
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• 2007

본논문천명(本論文闡明) "류경(類經)" 위안등창익의학사상적천원(爲安藤昌益醫學思想的泉源), 종안등창익학습(從安藤昌益學習) "류경(類經)" 적계단래비판(的階段來批判) "류경(類經)", 집중적연구관찰극복계단적전화과정(集中的硏究觀察克服階段的轉化過程). 안등창익(1703-1762)재일본강호시대시개즉독창우진보적사상가야시중의사(安藤昌益(1703-1762)在日本江戶時代是個卽獨創又進步的思想家也是中醫師). 타통과(他通過)'자연진영도(自然眞營道)'등굉대적저술(等宏大的著述), 부근논술료사회철학급자연철학(不僅論述了社會哲學及自然哲學), 이차재일본의학사상난이발현적독특적의학사상급여체계화(而且在日本醫學史上難以發現的獨特的醫學思想給與體系化). 타이유교비판위기초(他以儒敎批判爲基礎), 비판중국의학대유유의적경향(批判中國醫學帶有有醫的傾向), 여후세파(與後世派), 고방파적맥락야부동(古方派的脈絡也不同), 독자제정일본의학(獨自制訂日本醫學). 타대어중국적음양오행설이진퇴론화사행팔기적호성론래대항(他對於中國的陰陽五行設以進退論和四行八氣的互性論來對抗), 대어'내경'적국가유추(analogy)내장관이유기생체적내장관래대치(對於‘內經’的國家類推(analogy)內臟觀以有機生體的內臟觀來對峙). 병차비판숙명론적운기론이제창대소우주론적생태학(ecology)적의학. 이차간래(以此看來), 안등창익적의학사상시이비판'내경'위개단(安藤昌益的醫學思想是以批判‘內經’爲開端). 아문가이통과안등창익적운기론적비판래명백(我們可以通過安藤昌益的運氣論的批判來明白), 타대'내경'적이해시의거장개빈적 "류경"(포괄'도익'화'부익')(他對'內經'的理解是依據張介賓的"類經"(包括'圖翼' 和 '附翼')). 안등창익일방면계승장개빈적운기론영일방면야지유비판적태도. 타주장십기래대체십간(他主張十氣來代替十干), 인위군화여상화시파군신적상하관계정당화(認爲君火與相火是把君臣的上下關係正堂化), 인이반대저양적사고방식(因而反對這樣的思考方式). 병차안등창익부정기성적음운학, 제창자연적운도(提唱自然的韻道), 아문가이확인대어타적사상장개빈적 "류경" 시위중요적기초(我們可以確認對於他的思想張介賓的 "類經" 是爲重要的基礎).

• Journal of KIISE:Information Networking
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• v.33 no.1
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• pp.59-75
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• 2006

In this paper, we propose a congestion control scheme to control the congestion due to the mobility of ubiquitous devices on ubiquitous computing environment. Especially, this congestion control scheme provides a reverse congestion avoidance state which can classify between packet error by features of wireless network and packet dropping by congestion. Also, it provides a slow stop state which can minimize bandwidth waste due to congestion control. The proposed congestion control scheme controls more adaptive than existing congestion control schemes. The proposed congestion control scheme is designed based on DCCP(Datagram Congestion Control Protocol) being proposed by IETF(Internet Engineering Task Force) and implemented on the Linux kernel. In simulation results, the proposed congestion control scheme provides good bandwidth throughput in wireless network as well as in wired network.

• Journal of the Korean Society of Child Welfare
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• no.60
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• pp.25-57
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• 2017

The effects of regular and active leisure activities on positive growth and development in adolescents are widely known. In our society, however, it is challenging to enjoy or expand such activities due to diverse constraints. Under unfavorable circumstances, this study attempted to investigate the application of time availability for liberal leisure activities as a way to help adolescents engage in active leisure activities. Specifically, this study examined the relationship between time availability (both individual and structural) and the time invested in leisure activities at youth training centers which support such leisure activities. The study found the following results: As both individual and structural time availability expanded, the time invested in leisure activities increased as well. Based on these results, this study discussed policy and practice implications regarding the support of adolescents' leisure activities.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2009.05a
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• pp.876-879
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• 2009

As performance and feature set of mobile devices are getting better, the scope of things for which they can be used is also getting widened. More than simply browsing information using mobile web, now these devices can interact with users. It requires various features to manage a web site; supporting full-browsing alone is not enough since there are problems such as processing speed, user interface restriction. However, using mobile devices to manage a web site has its own merits since the can be used without restriction of time and location. In this paper, we introduce a mobile web site administration software that provides both online and offline features. It supports CRUD (Create, Read, Update, Delete) operations for news and users. These operations can be executed both offline and online. A user can do most of things offline; It connects to online only when it's absolutely necessary and does those in batch mode.

• Journal of Korean Philosophical Society
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• no.94
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• pp.163-192
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• 2011

A posteriori physicalists criticize non-physicalist arguments based on the framework of two-dimensional semantics. Most of them argue for physicalism based on the analogy between scientific identity statements and psychophysical identity statements. This paper argues for another version of aposteriori physicalism, so called physicalism employing 'phenomenal concept strategy' or 'exceptionalist strategy', which appeals to merely the nature of phenomenal concept without recourse to a semantic framework. Loar's phenomenal concept strategy employs the aspect of our recognitional ability of objects in criticizing non-physicalism, leading to the argument that phenomenal concepts are 'exceptional' in applying conceivability-possibility link. I critically examine Stoljar's, Chalmers', Raffman's criticisms against Loar's exceptionalists strategy. Loar's phenomenal concept strategy reflects well our psychological aspects surrounding the acquisition and the possession of 'phenomenal concept'. In several respects, Loar's exceptionalist version of a posteriori physicalism is the best explanation for accounting for both the explanatory gap and the a posteriority of psychophysical identity.

• Philosophy of Medicine
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• v.25
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• pp.3-26
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• 2018

Medicine and philosophy were very closely related in antiquity. The Pre-Socratics were interested in physiological and pathological aspects of human body. Their interests of human body was a part of interests on nature. Plato and Aristotle were fond of proposing their philosophical arguments using medical analogy. Medicine and philosophy were regarded as two disciplines which play a similar role in human being. Ancient philosophers thought that medicine and philosophy were similar on the ground that while philosophy eliminates passion from human soul, medicine eliminates disease from human body. Here, they regarded the similarity of medicine and philosophy only in terms of analogy. More comprehensive and systematic relationship between medicine and philosophy is realized by Galen. He manifestly declared that "The Best Doctor is also a Philosopher", which is also the title of one of his treatise. In this treatise, Galen regarded philosophy is a discipline consisted of physics, logic, and ethics according to the view s of Stoics. As a result, a good doctor for Galen is one who is well versed in physics, logic, and ethics. Furthermore, He regarded Hippocrates as the ideal model of a doctor-philosopher.

• Journal of the Korean Society of Groundwater Environment
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• v.5 no.3
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• pp.148-154
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• 1998

Gubong gold-mine, previously one of the largest gold mines in Korea, is located at the mid-west of the South Korea. In the areas nearby the mine, the shallow groundwater was the major source for domestic and farming water-supply. Soil contamination by Cd, Cu, Pb and Zn was previously known in this area. This study is objected to identify quality of the shallow groundwater, possibly affected by the mine tailings. Samples were collected from a nearby stream, shallow groundwater and seepage from the tailings. Chemical analysis for the water quality includes major cations such as Na, K, Ca, and Mg, anions as F, Cl, NO$_3$, SO$_4$, HCO$_3$, and trace elements as Al, Cr, Mn, Fe, Ni, Cu, Zn, Cd, Pb, Se, As, Hg. Water types could be drawn into four groups from the plots of Piper, Stiff diagrams and cluster analysis. SAR-Conductivity plot indicates the water does not pose either alkalinity or salinity hazards for irrigation. Major contaminant in groundwater appeared to be arsenic, released from arsenopyrites in tailings by oxidation. Dredging of buried railing materials could stimulate the release of arsenic from the sediments to the groundwater.