• Journal of rehabilitation welfare engineering & assistive technology
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• v.5 no.1
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• pp.117-124
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• 2011

The purpose of this study was to identity the types of leisure and to examine the quality of life according to them and suggest the basic resources about leisure on elderly chronic stroke. The subject of this study was elderly chronic strokes(n=80) in Gwang Ju. A total of 80 questionnaires from subjects were analyzed. The social leisure activity shows more clear and positive purpose and more higher quality of life than private leisure. But it also has limited time and require more money. Elderly chronic stroke presents passive and limited leisure activity and shows low satisfaction about leisure. But the leisures that needed more physical movements show higher quality of life. So leisure activity program which is able to support and assist the limited body function will be helpful to increase the quality of life of elderly chronic stroke.

• Journal of Fisheries and Marine Sciences Education
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• v.13 no.2
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• pp.212-235
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• 2001

인간의 주요한 경제행위로서의 어업은 현재 전세계에 걸쳐 여러 가지 문제들로 많은 어려움을 겪고 있는데, 그 가운데서 주된 내용이 자원유지와 어업행위와의 조절이다. 이에 따라 어업문제에 대한 해결과 지속적인 어업 발전의 실현에 대한 열망으로 세계 각지에서는 각기 다른 학문영역, 예를 들면 생물학, 경제학, 사회학 등 각 분야의 전문가들이 모여 생태보호 주의적 접근법(Conservation-minded techniques)이나 시장 기구에 의한 방법(Market-based instruments), 그리고 공동체에 기초한 관리(Community-centered approaches) 등과 같은 여러 가지 어업관리정책을 제시하고 있다. 이러한 여러 접근 방법 중에서 현재 세계적으로 폭넓은 지지를 받고 있는 것이 재산권에 기초한 ITQs과 협동어업관리제도(Co-management)이다. ITQ제도는 어업행위에 대한 사적 재산권의 설정을 근간으로 한다. 그러나 어업자원은 회유성이라는 자원의 본질적 성질에 의해 진정한 의미의 사유화는 어렵다. 따라서 어업자원은 완벽한 사유화가 이루어진다 하더라도 특히 어업 인구가 거대한 지역 또는 자원이 한정된 국가에 있어서는 충허용어획량의 개별 할당량이 어업에 있어서 규모의 경제와 같은 경제적 운영을 도모해 나가기에는 너무 적을 수도 있다. 그렇다면 여기에서 어떻게 어업관리를 합리적으로 운영하면 ITQ의 제도적인 이점을 이용하고, 동시에 ITQ제도의 경제적 제약을 극복할 수 있는지에 대해서 묻게 된다. 본 연구의 주목적은 이러한 의문으로부터 출발한 것으로, 협동어업관리제도에 의한 어업 할당량의 공동소유는 ITQ제도의 경제적 약점을 제거하는 동시에 그 이점을 누리는 최고의 해결책이 될 수 있다고 보고, 다음과 같은 내용에 대해 고찰하였다. 어업 문제의 본질은 어떻게 인식되는가, 어업문제 해결의 전통적 방식과 새로운 패러다임은 무엇인가, 그리하여 본 논문에서는 결론적으로 어업문제 해결의 새로운 패러다임으로서 협동어업관리 제도의 본질을 이해함과 아울러 재산권에 기반을 둔 협동업관리 제도의 통합모형을 제시하였다.

• The Korean Journal of Applied Statistics
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• v.2 no.1
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• pp.1-17
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• 1989

本稿는 統計學의 理論 개척과 발전을 위해서 應用分野의 연구에 주력해야 할 필요성을 밝히려 한다. 우선 기존의 統計理論이 應用分野에서 生成 발전된 점을 밝히는 동시에 應用分野에 대한 연구의 관심을 확대시켜야 할 필요성을 설명하려 한다. 물론 數理統計學이나 確率論과 같은 分野는 論理的 硏究方法으로 數理解析의 발전이나 方法을 개척할 수가 있다. 그러나 그것도 人類의 福祉증진에 기여하게 된다는 최종적인 목적성이 전제된다면 현실의 應用分野와 결코 무관할 수는 없을 것이다. 이상과 같은 목적을 위해서 우선 統計學이 과학으로 성립하기 이전의 生成 배경을 설명하면서 統計學이 人間의 生活과 얼마나 밀접하고 그 대상이 얼마나 광범위한가에 대하여 설명하려 한다. 처음부터 그것은 個人生活보다는 集團生活과 더욱 밀접한 관계가 있었다는 점을 강조하게 된다. 그리고 20世紀初에 론돈大學의 生物測定硏究室, 겔톤優生學硏究室 등을 중심으로 한 웰든, 겔톤, 피어슨 그리고 네이만의 生物測定硏究와 數理統計學연구와 핏샤와 끄ㅅ 등의 연구업적에 의해서 統計學이 科學으로 성립된 歷史的 사실을 반취하면서 統計學의 연구방법과 대상을 간접적으로 인식하게 된다. 또 統計學이 他科學과 비교하여 硏究對象 方法 그리고 實踐的 側面에서의 學問的 特殊性을 설명하면서 統計學연구의 應用側面을 강조하게 된다. 끝으로 선구자들의 統計學연구방법과 태도를 조감하면서 어떻게 하면 새로운 統計的方法을 개척할 수 있고 또 他分理 연구에 기존의 統計的方法이 기여할 수 있는가의 方法을 탐색하게 될 것이다. 즉 專門硏究機關에서, 實務現場에서 새로운 硏究對象을 찾아 새 方法을 개척할 수 있는가 하는 문제를 論議하게 된다. 이러한 탐구는 모두 과거에 統計學발전에 기여한 여러 선구자들의 연구방법과 업적을 되새기면서 유도된다.격)개발에 관심을 가진 사람들이 모이는 일일 것이다. 통계분야에서도 몇가지 표준화 활동이 ISO 를 중심으로 진행되고 있다. 예를 들면 실험과 검증 결과의 표현과 해석, 표본추출 방법 등에 관한 것으로 이들은 통계의 응용분야에서 꼭 필요한 표준이다. 구체적인 예로서 우리나라 국민의 표준체위값을 설정하기 위하여 측정조사할 때 측정방법 뿐 아니라 표본추출 방법과 통계자료 처리과정의 표준화가 이루어 지지 않는다면 각 기관에서 조사 발표하는 체위관계 자료가 상이하여 국가기관의 통계자료에 대한 신뢰성이 저하되고 통계값을 이용하여 의류, 신발 등의 제품을 제조하는 산업계에 혼란을 야기시킬 수 있다. 본 고에서는 ISO의 활동을 정보처리 분야에 초점을 맞춰 간략하게 설명하고 통계분야의 국제 활동을 비전문가인 필자들이 아는대로 소개하는 한편 국내활동의 필요성을 강조하여 관련 기관, 학계 및 산업계 관련전문가들의 ISO 국내활동 참여를 제의하고자 한다.mes$E조합에서는 견층비율의 자잠에서, D$\times$F조합에서는 웅잠의 견층비율에서 비교적 높은 값을 나타내었다.

• The Korean Journal of Applied Statistics
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• v.24 no.3
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• pp.535-546
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• 2011

This study develops statistical models for the binary forecast of Asian dust days over South Korea in the winter season. For this study, we used three kinds of data; the rst one is the observed Asian dust days for a period of 31 years (1980 to 2010) as target values, the second one is four meteorological factors(near surface temperature, precipitation, snowfall, ground wind speed) in the source regions of Asian dust based on the NCEP reanalysis data and the third one is the large-scale climate indices. Four kinds of statistical models(multiple regression models, logistic regression models, decision trees, and support vector machines) are applied and compared based on skill scores(hit rate, probability of detection and false alarm rate).

• Korean Security Journal
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• no.59
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• pp.9-35
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• 2019

Until now, a lot of research on cyber security have been tried, but there have been few studies on overall relationships, including internal factors and external factors. Therefore, this study examined cyber security management considering not only internal elements of SMEs but also corporate management environment. The first qualitative analysis and the second quantitative analysis were conducted through mixed method research. Qualitative analysis was conducted through a semi-structured interview method, and three themes were found: insufficient cyber security management system, internal noncooperation for cyber security, and problems derived from decision-making system. In the quantitative analysis, multiple regression analysis was conducted on the data obtained through the questionnaire. The perception of cyber threats and internal support among independent variables positively influenced the cyber security management system or the dependent variable. Through this study, internal variables had a causal impact on the cyber security management system rather than external environment variables. This implies that the variables related to the organizational culture such as employees' perception are important. These results are expected to provide practical significance for enhancing the cyber security management system in SMEs.

• Informatization Policy
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• v.22 no.4
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• pp.91-104
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• 2015

This study tests the effects of differential association, definitions, differential reinforcement and imitation from social learning theory in the explanation of university students' crimes in social network services. In addition, this study tests the interaction effects between social learning factors and other factors such as low self-control, subcultural environment, and crime opportunity for the integrated approach. Using data from 486 university students in Seoul, results show that both definition and imitation have significant influences on crimes, even though differential association and differential reinforcement factors have no significant influences on crimes in social network services. Results also reveal that there are significant interaction effects between definition and subcultural environment, which meana that definition has a strong effect on crimes in high subcultural environment. In addition, it is found that reinforcement has also a strong effect on crimes in high crime opportunity and that interaction effect between imitation and low self-control is significant, which means that imitation has a strong effect on crimes in low self-control students.

• Journal of the Korean Wood Science and Technology
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• v.41 no.3
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• pp.211-220
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• 2013

The nailed joints in wood construction are commonly designed to resist and carry the lateral load but also subject to withdrawal force like uplift load due to the wind. This research was conducted to evaluate the performance of nailed joint composed of dimension lumber and sheathing materials through the nail withdrawal and unsymmetric double shear joint test, and then compared to current design values. The withdrawal strength was greatly dependant on wood specific gravity, and the withdrawal strength of I-joist with OSB showed higher value in spite of low specific gravity. The maximum withdrawal loads were greater than that of derived current design values about 5 times. The lateral resistance of Japanese larch/OSB nailed joints was higher than that of SPF/OSB nailed joint, and derived allowable lateral strength of nailed joints in this study exceeded the current design values. The failure mode of nailed joints was primarily due to the nail bending and this tendency was notable in SPF/OSB nailed joint.

• Tribology and Lubricants
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• v.25 no.2
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• pp.108-113
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• 2009

This paper presents a experimental results for the performance evaluation of a double-bumped air foil bearing. The test results of a double-bumped AFB is compared with a single-bumped AFB at a heavily-loaded condition. The diameter of the test bearing is 50 mm, and the axial length is 50 mm. Nominal clearance of the single-bumped AFB is evaluated as $105{\mu}m$, and that of the double-bumped AFB is as $95{\mu}m$. The test of the AFBs are demonstrated at 3 test mode; the load variation mode, the speed variation mode, and start-stop mode. The single-bumped AFB demonstrated a upward load-carrying capacity of 95 N and a downward load-carrying capacity of 130 N at 20,000 rpm. The double-bumped AFB demonstrated a upward load-carrying capacity of 170 N and a downward load-carrying capacity of 170 N at 20,000 rpm. The single-bumped AFB demonstrated a downward lift-off speed of 16,300 rpm at 105 N. The double-bumped AFB demonstrated a downward lift-off speed of 15,400 rpm at 105 N. The start-stop test of the AFBs assure 5,000 cycle endurance life. The test results are compared with the theoretical calculation results. The test and theorectical results show thata double-bump air foil bearing provides a higher load-carrying capacity, stiffness and damping than a single-bump air foil bearing in a heavily-loaded condition.

• Membrane Journal
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• v.26 no.1
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• pp.43-54
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• 2016

In this study, we have prepared engineering polymer-based ionomers and pore-filled ion-exchange membranes (PFIEMs) employing a porous polyethylene substrate and combined them to fabricate the ionomer-PFIEM composite membranes for the reverse electrodialysis (RED) application. Both the electrochemical properties comparable to those of the commercial ion-exchange membranes (AMX/CMX, Astom Corp., Japan) and the physical stability adaptable to the practical uses have been achieved by integrating the ionomers having a high ion conductivity and the PFIEMs with an excellent mechanical strength. The RED performances have been evaluated by employing the prepared ionomer-PFIEM composite membranes and therefore excellent power generation performances were shown as the levels of 86.4% and 104.8% for the anion-exchange membrane and cation-exchange membrane, respectively, compared with those of the commercial membranes.

• Journal of Global Scholars of Marketing Science
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• v.13
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• pp.89-111
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• 2004

The authors address the effectiveness of the composite brand extension In the context of international brand alliance. In composite brand extension, four combinations of 4 domestic brands and one internationally well-known brand as header and modifier brands are used as the brand names for four experimental products. The results of analyses reveal that (1) degrees of brand attribute transferability between header and composite brands, and (2) the impact of header and modifier brands on a composite brand appear to be decreasing when the distance of product categories between header and modifier brands are farther. In addition, the authors demonstrate that the fitness between constituent brands and composite brands tends to have more influences on consumers' evaluation of a composite brand than does the complementarity when the distance of product categories between header and modifier brands are farther. Some implications and future research directions are also discussed.