• Human Ecology Research
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• 제52권2호
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• pp.151-164
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• 2014

This study was conducted to explore the relationships between the elderly's existential identity and psychological well-being in accordance with the elderly's age-identity so as to improve the quality of life in the elderly with prolonged lives. The data were collected from respondents who were more than 60 years in age who live in city Suncheon. The statistics used for the data analysis were reliability, frequency, percentage, mean, standard deviation, one way analysis of variance, and multiple regression. The results of this study were as follows: (1) A majority of the elderly (49.8%) acknowledged psychological age as actual age. (2) The degrees of the elderly's existential identity was 54.90, while the degree of the elderly's psychological well-being was 33.07. (3) The elderly's existential identity level was significantly affected by economic state, spouse, age-identity, monthly living expenses, household, religion, career, age, and health state. Further, the elderly's psychological well-being level was significantly affected by existential identity, economic state, spouse, health state, age-identity, monthly living expenses, household, education, career, and age. (4) The variables that affect the elderly's existential identity were age-identity, economic state, health state, religion, monthly living expenses, and career, indicating an explanatory power of 38%. Moreover the variables that affect the elderly's psychological well-being were existential identity, age-identity, economic state, health state, and monthly living expenses, explaining approximately 55% of the total variance.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권7호
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• pp.3629-3647
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• 2017

Certificate-based cryptography is a useful public key cryptographic primitive that combines the merits of traditional public key cryptography and identity-based cryptography. It not only solves the key escrow problem inherent in identity-based cryptography, but also simplifies the cumbersome certificate management problem in traditional public key cryptography. So far, four short certificate-based signature schemes have been proposed. However, three of them fail in achieving the existential unforgeability under adaptive chosen-message attacks and the remaining one was not constructed in the normal framework of certificate-based signature. In this paper, we put forward a new short certificate-based signature scheme. The proposed scheme is devised in the normal framework of certificate-based signature and overcomes the security weaknesses in the previous short certificate-based signature schemes. In the random oracle model, we formally prove that it achieves the existential unforgeability against adaptive chosen-message attacks. Performance comparison shows that it is efficient and practical.

• 한국실내디자인학회논문집
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• 제15권3호
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• pp.92-101
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• 2006

This study examines placeness of the living space on the basis of Schulz's existential space and inquires into the expressional features of placeness by analyzing cases. Results of this study have shown that placeness of living space is formed by three factors as follows. First, the living space with placesness maintains inner order which structuralizes surroundings. Second, it expresses its identity through innate shape that reflects surroundings. Third, inner space has innate identity and it is much related to characteristics personality of a resident, environmental and psychological factors. It is as follows that concrete features of existential placeness shown in analyzing cases of Botta and Moore's works. There are concrete expressional features of placeness in the housing of Botta, and one is to keep order of inner space the horizontal and vertical axis reflected surroundings. Another is to show existence feeling as the shape of a stable singular mass with surroundings and regional properties. The third is to value innate features of each space inside housing and particularly to acquire placeness as combining phenomenological characteristic of light. There are concrete expressional features of placeness in the housing of Moore, and first, strong centrality formed in the inside is emphasized as extending to outside environment. Second, existence feeling is acquired as familiar form using the shape and material considered surroundings. Third, the personality of a resident is positively reflected in the design. Besides, placeness is acquired by goods and furniture as positively considering environmental and psychological sides.

• 한국실내디자인학회논문집
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• 제6호
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• pp.38-44
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• 1995

The purpose of this paper is to show that a shape pro-duced by natural factors such as weather, environments, etc., can be introduced into the emotion of a design, and to make a design process by planning a Korean image and characterizing its concept. Human beings, nature, man-made objects, and society have their own functions in an environmental structure. When all their functions are kept in working order, human beings come to discover orderliness out of which they can absorb pleasure. They cannot look into their own inside but they can trace back in their memories a variety of panoramic experiences which have been embed-ded onto their identity during their lifetime interactions with an empirical world. Children first acquire a way of cognition in the space, a comprehensive premise, connecting a specific place and an object of cognition. Such subconsciousness forms sky-lines of mountains, seas, and trees under the sky, and produces axis lines and beehived domes under the influ-ence of natural, cultural, and social factors, forming a folk culture. A subconscious composition of existential space is extended. A subconscious composition of existential space is extended to the areas of environmental design, product design, and fashion design. The development of a concept of place and space as a system is a necessary condition for discovering an existential foothold.

• 여성건강간호학회지
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• 제8권2호
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• pp.190-200
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• 2002

The purposes of this study were to understand the sex role identity and the meaning in life(MIL) of matriarchs and analyze their relationships to offer basic data for effective nursing strategies for improving MIL. The data for this study was collected from the 10th of August to the 30th of November, 2000. The subjects were women registered in an occupational training program for unemployed matriarchs which is held in the Working Women's Center in Busan. The measurement tools of this study were MIL(unpublished)developed by researchers and sex role inventory designed by Kim Deuk Ran(1992). The results of this study were as follows: 1.Sex role identities of matriarchs were feminity 13.7%, masculinity 13.4%, androgyny 37.8% and undifferentiated 35.1%. 2. The mean MIL for matriarchs was $173.46{\pm}16.09$. 3. The levels of MIL were 57.2% of the subjects felt a loss of meaning in life, i. e. existential vacuum, 42.8% were in pursuit of meaning but had not discovered it completely and 6.0% felt they had established meaning in life. 4.There were significant differences in MIL levels, concurrent to 4 types of sex role identities(F=11.93, P=.000). And according to Scheffe's post test, between feminity and masculinity, feminity and androgyny, masculinity and the undifferentiated, androgyny and the undifferentiated, there were significant differences. From the results of this study, most matriarchs felt loss of meaning in life, i. e. existential vacuum, and the group with masculine sex role identity had the highest level of MIL. In conclusion, the factors related to masculine sex role identity are necessary to develop nursing strategies for improving levels of MIL.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권5호
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• pp.2792-2810
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• 2017

Forward-secure signature is a specific type of signature, which can mitigate the damage caused by the signing key exposure. Most of the existing forward-secure (identity-based) signature schemes can update users' secret keys at each time period, achieve the existential unforgeability, and resist against classical computer attacks. In this paper, we first revisit the framework of forward-secure identity-based signatures, and aim at supporting flexible key update at multi time period. Then we propose a post-quantum forward-secure identity-based signature scheme from lattices and use the basis delegation technique to provide flexible key update. Finally, we prove that the proposed scheme is strongly unforgeable under the short integer solution (SIS) hardness assumption in the random oracle model.

• 철학연구
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• 제145권
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• pp.167-194
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• 2018

청소년기는 과도적 시기로서 건강한 정체성 형성을 위해서 가정이나 사회의 지원이 필수적인 시기이다. 그러나 우리나라 청소년의 사망원인 1위는 9년째 자살이라고 한다. 청소년 자살에 영향을 미치는 요인에 대한 최근 연구는 가족요인, 성격 및 심리적 요인, 정신질환 요인, 자살촉발 요인, 학교 요인, 보호 요인 등을 제시하고 있다. 이와 같은 요인을 관통하는 것은 과도기 청소년들이 겪는 정체성의 혼란과 더불어 감정이나 충동조절의 취약성이다. 이러한 문제를 극복하기 위하여 필요한 것은 약물치료나 심리치료뿐만 아니라 청소년들이 자신의 정체성을 건강하게 형성해 갈 수 있는 가족이나 사회의 지원과 더불어 이와 같은 현상에 대한 철학적 접근이다. 본 연구는 청소년 자살의 실존적 원인들에 속하는 자아정체성의 혼란, 감정이나 충동조절능력의 취약에 대한 이유를 철학적으로 성찰해보고자 한다. 이를 위하여 키에르케고어의 '심미적 실존'을 주목하고자 한다. 일반적으로 많이 알려진 실존의 삼 단계, 즉 '심미적 실존', '윤리적 실존', '종교적 실존'의 관계에 대한 연구가 아니라 이들 중에서 지금까지 그다지 주목되지 않았던 심미적 실존을 중심으로 인간의 실존적 정체성을 주목해보고자 한다. 이를 위하여 20대 후반의 키에르케고어가 자신의 청춘을 기억하며 저술한 심미적 저술인 "이것이냐 / 저것이냐 제1부"를 분석하고자 한다. 특히 이 저서의 2장에서 제시되는 욕망(Begierde)의 3단계, 즉 '꿈꾸고 있는($tr{\ddot{a}}umend$)' 욕망, '찾고 있는(suchend)' 욕망, 그리고 '욕망하고 있는(begehrend)' 욕망을 면밀히 분석하고자 한다. 이로써 키에르케고어의 사상 속에서 욕망의 탄생 과정을 드러내는 동시에 이러한 욕망의 탄생 과정과 자아정체성의 혼란이나 감정, 충동조절의 취약성과의 연관성을 철학적으로 짚어보고자 한다.

• 대한간호학회지
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• 제42권1호
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• pp.1-8
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• 2012

Purpose: This study was conducted to identify the protective factors that influence suicide probability in religious male high school students. Methods: The data was collected from Nov. 5 to Dec. 10, 2009. Data were collected by self-report questionnaire from 255 students selected from 2 religious male high schools in B city. The instruments for this study were the Suicide Probability Scale for Adolescence (SPS-A), Inventory Parents Peer Attachment-Revision (IPPA-R), Spiritual Well-being Scale (SWBS), and Ego-identity Scale. The data were analyzed using t-test, one-way ANOVA, Scheffe test, Pearson correlation coefficients and stepwise multiple regression with the SPSS 14.0 program. Results: The protective factors of suicide probability in religious male high school students were identified as existential spiritual well-being (${\beta}$= -.46, p<.001), self-identity (${\beta}$= -.30, p<.001), and mother attachment (${\beta}$= -.21, p<.001). These three factors explained 61.5% of the variance in suicide probability. Conclusions: The results suggest that improvement in spirituality, ego-identity, and mother attachment for religious male high school students is important to reduce the probability of suicide.

• IEIE Transactions on Smart Processing and Computing
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• 제2권2호
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• pp.57-66
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• 2013

Wireless Sensor Networks consist of small, inexpensive, low-powered sensor nodes that communicate with each other. To achieve a low communication cost in a resource constrained network, a novel concept of signcryption has been applied for secure communication. Signcryption enables a user to perform a digital signature for providing authenticity and public key encryption for providing message confidentiality simultaneously in a single logical step with a lower cost than that of the sign-then-encrypt approach. Ring signcryption maintains the signer's privacy, which is lacking in normal signcryption schemes. Signcryption can provide confidentiality and authenticity without revealing the user's identity of the ring. This paper presents the security notions and an evaluation of an ID-based ring signcryption scheme for wireless sensor networks. The scheme has been proven to be better than the existing schemes. The proposed scheme was found to be secure against adaptive chosen ciphertext ring attacks (IND-IDRSC-CCA2) and secure against an existential forgery for adaptive chosen message attacks (EF-IDRSC-ACMA). The proposed scheme was found to be more efficient than scheme for Wireless Sensor Networks reported by Qi. et al. based on the running time and energy consumption.

• 비교문화연구
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• 제47권
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• pp.191-216
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• 2017

20세기의 서양사상 가운데 하나인 실존주의는 1 2차 세계대전과 대공황, 파시즘의 확산, 스페인내란전쟁 등의 비극적 사건을 겪으며 이성과 과학발달이 인간을 순식간에 피폐와 죽음으로 몰고 가는 결과를 낳게 되자 인간을 위해 인간성을 회복시키는 시대정신이다. 앙드레 말로는 문학작품 속에서 등장인물들의 운명으로써 삶과 죽음의 문제를 제기해 인간이 어떻게 살아가며 어떻게 죽음을 맞이하는가에 대한 실존적 고뇌를 기록한다. 말로의 등장인물들에게 있어 인간의 정체성과 관련된 존재의 부조리는 실존적 자기 성찰을 의미한다. 작가는 생존의 위협이 직접적으로 다가오는 전쟁과 테러, 혁명, 모험 속에서 그들이 죽음에 직면해 운명에 대한 실존적 의식과 행위를 숙고한다. 말로는 자신의 모든 문학 작품들 속에서 죽음의 문제를 밀도 있게 다루고 있으며 이는 철학적 사고의 중심 문제로 부각되고 있다. 말로는 "정복자"(Les $Conqu{\acute{e}}rants$, 1928), "왕도의 길"(La Voie Royale, 1930), "인간조건"(La Condition Humaine, 1933), "희망"(L'Espoir, 1937)의 장편소설에서 비극적 상황에 놓인 등장인물들을 통해 삶의 의미는 무엇인가라는 철학적 명제를 제시하며, 그들이 운명을 스스로 지배하려는 실존의식과 존재의미를 추구한다. 말로는 이러한 비극적 세계관 속에서 인간성과 삶의 긍정, 죽음을 부정하는 등장인물들의 의식과 행동을 나타낸다. 죽음의 고뇌는 예측할 수 없는 본능적인 욕구와 도박, 아편 등의 도피적 행동을 유발하지만, 그것은 절망에서 벗어나려는 처절한 몸부림이며 자신의 존재는 누구인가라는 질문과 연계된 것이다. 말로의 실존주의적 사고로서 항상 부각되는 점은 죽음에 대한 운명의식으로 인해 결국엔 인간이 얼마나 고독한 존재인가라는 숙명적 인간조건의 비극적 형이상학이다. 하지만 소설에서 등장인물들은 모험과 혁명, 전쟁 속에서 동료들과 함께 행동하며 타인을 위하여 개인주의를 초월하는 동지애적인 연대의식은 인간존중이 된다. 인간애와 인간성 회복이라는 공동의 목표를 두고 자발적으로 구성된 인간들 사이의 동지애는 대의를 위해 목숨을 바칠 수 있는 인간의 위대함이 내재되어 있기 때문이다. 따라서 말로의 동지애는 휴머니즘의 세계를 창조할 수 있는 존재의식의 승리를 포함한다.