• Journal of Family Resource Management and Policy Review
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• v.12 no.2
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• pp.209-229
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• 2008

The purpose of this study is to analyze the influence of parent-to-child financial transfers, providing household chores, and inheritance on financial transfers and time transfers from adult children to their elderly parents with dementia. Analyzing data from the sample of 343 adult children of parents with dementia, this study finds a strong positive effect of prior parent-to-child financial transfers on child-to-parent financial transfers under controlling parent characteristics, respondent characteristics and sibling's transfers to their parents. The effects of providing household chores and inheritance on time transfers are also positively significant. The results of this study point out the importance of reciprocity in resource transfers between adult children and their parents with dementia.

• Proceedings of the Korean Association for Survey Research Conference
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• 2005.12a
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• pp.115-140
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• 2005

• 정보화사회
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• s.105
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• pp.20-22
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• 1996

"미래의 정보화사회를 장악하려면 우선 우주를 장악하라" 21세기 정보사회를 지향하는 세계각국은 지금 인공위성을 통하여 다양한 정보를 신속히 교환하고 무한한 가능성을 지닌 우주의 자원을 선점하기 위하여 치열한 기술전쟁을 벌이고 있다.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1998.10a
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• pp.102-106
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• 1998

• Journal of Convergence for Information Technology
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• v.9 no.6
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• pp.13-18
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• 2019

This paper proposes efficient and secure two-way authentication protocol for binding update messages between mobile devices and home agents / correspondent nodes in IoT and Mobile IPv6 (MIPv6) environments with limited computing power and resources. Based on the MIPv6 message exchange, the proposed protocol satisfies both the authentication and the public key exchange optimized for both sides of the communication with minimum modification. In the future, we will carry out a performance analysis study by implementing the proposed protocol in detail.

• Proceedings of the Korea Multimedia Society Conference
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• 2000.04a
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• pp.332-335
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• 2000

산업의 급속한 발전으로 자원의 사용은 증가되고 있다. 연안역은 그 지리적 특성상 다양한 산업이 자리잡고 있어 배출되는 폐자원의 종류도 다양하다. 본 논문은 연안 폐자원 활용을 위한 데이터베이스설계를 제안한다. 본 설계는 웹 환경에서 구현되고 웹과 브라우저의 연동은 플랫폼에 독립적인 Servlet을 사용한다. 또한, 인터넷 환경에서의 효율적인 데이터 교환을 위한 XML 표현 스킴을 설계한다. 페자원 및 폐자원활용 데이터는 폐자원을 배출하는 회사 및 재활용하는 회사, 또는 이에 관심을 가진 개인이나 단체에 의해 수집된다.

• Proceedings of the Korea Contents Association Conference
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• 2017.05a
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• pp.83-84
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• 2017

본 연구는 직무자원과 직무요구, LMX가 노인복지관의 사회복지사들의 소진에 미치는 영향을 실증적으로 검증하였다. 본 연구는 경기도 지역의 50개 노인복지관을 대상으로 총 315부의 설문조사를 실시하였다. 조사는 우편으로 진행하였고, 회수된 설문지는 총 33개 기관 189부이다. 조사기간은 2016년 1월-2월 약 두달간 이루어졌고, 기술통계, 다중회귀분석방법으로 분석하였다. 분석결과 직무자원과 직무요구는 소진에 영향을 나타내어, 직무자원이 많을수록 사회복지사들의 소진이 감소되며, 직무요구가 높을수록 사회복지사들의 소진도 높다고 할 수 있다. 또한 LMX는 직무자원, 직무요구와 소진과의 관계를 부분 매개하는 것으로 검증되었다. 이러한 결과를 토대로 노인복지관 사회복지사들의 소진을 감소하기 위하여 조직관리와 인적자원관리에 대한 함의를 찾을 수 있다.

• Resources Recycling
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• v.20 no.6
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• pp.28-36
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• 2011

The adsorption of nickel(Ni) from sulfuric acid solution was carried out by ion exchange method. A series of batch tests in synthetic solutions were carried out using Lewatit Monoplus TP 220 resin. The following experimental parameters, such as temperature, shaking rate, reaction time, pH, resin dosage and concentration of nickel ions etc. were investigated to establish the effective optimum conditions of nickel adsorption. The solution pH(2.0~5.0) and shaking rate had little effects on the adsorption of nickel and adsorption time of 72hours was required to reach equilibrium. The experimental results show a good agreement with Feundlich isotherm and pseudo-second order reaction. The adsorption behavior of Ni obtained from synthetic solution was compared with that of waste electroplating solution. Elution of nickel from loaded resin increased with increase in $H_2SO_4$ concentration.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.19 no.3
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• pp.73-82
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• 2009

This paper proposes an efficient and secure user authentication and key agreement scheme instead of the HTTP digest and TLS between the SIP UA and server. Although a number of security schemes for authentication and key exchange in SIP network are proposed, they still suffer from heavy computation overhead on the UA's side. The proposed scheme uses the HTIP Digest authentication and employs the Diffie-Hellman algorithm to protect user password against dictionary attacks. For a resource-constrained SIP UA, the proposed scheme delegates cryptographically computational operations like an exponentiation operation to the SIP server so that it is more efficient than the existing schemes in terms of energy consumption on the UA. Furthermore, it allows the proposed scheme to be easily applied to the deployed SIP networks since it does not require major modification to the signaling path associated with current SIP standard.

• Resources Recycling
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• v.31 no.3
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• pp.73-80
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• 2022

Reduction smelting of spent lithium-ion batteries at high temperature produces metallic alloys. Following solvent extraction of the leaching solutions of these metallic alloys with either sulfuric or hydrochloric acid, the raffinate is found to contain Ni(II), Co(II), Mn(II), and Si(IV). In this study, two cationic exchange resins (Diphonix and P204) were employed to investigate the loading behavior of these ions from synthetic sulfate and chloride solutions. Experimental results showed that Ni(II), Co(II), and Mn(II) could be selectively loaded onto the Diphonix resin from a sulfate solution of pH 3.0. With a chloride solution of pH 6.0, Mn(II) was selectively loaded onto the P204 resin, leaving Ni(II) and Si(IV) in the effluent. Elution experiments with H₂SO₄ and/or HCl resulted in the complete recovery of metal ions from the loaded resin.