• 치위생과학회지
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• 제17권5호
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• pp.405-412
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• 2017

The purpose of this study was to examine whether a gratitude training program for preservice dental hygienists affects their gratitude disposition, self-esteem, and happiness. Dental hygiene students were recruited from a college in D and administered a pretest. The 76 selected participants were primarily those who had never written a gratitude journal. Participants were then randomly divided into an experimental group and a control group. Three participants failed to complete the program, leaving 73 subjects in the final analysis. Data were analyzed using the ${\chi}^2$ test, independent sample t-test, and analysis of covariance. The mean gratitude disposition score improved from $31.11{\pm}5.55$ in the pretest to $34.41{\pm}4.38$ in the posttest in the experimental group and from $31.44{\pm}4.41$ to $32.06{\pm}4.63$ in the control group. The mean self-esteem score improved from $31.22{\pm}4.03$ to $33.16{\pm}3.44$ in the experimental group and from $30.53{\pm}4.42$ to $30.97{\pm}3.80$ in the control group. The mean happiness score improved from $19.54{\pm}2.64$ to $21.78{\pm}2.43$ in the experimental group and from $19.64{\pm}3.32$ to $20.08{\pm}2.91$ in the control group. All of the participants improved their gratitude disposition, self-esteem, and happiness scores while participating in the gratitude training program, and it is expected that if such positive emotions can be sustained, they will naturally acquire the basic requirements of dental hygienists and build a better vocational consciousness and a higher sense of duty, as well as have a further positive effect on the quality of dental medical service. Further studies should be conducted to propose a concrete plan to expand and operate this gratitude training program more effectively.

• 한국의상디자인학회지
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• 제5권2호
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• pp.93-102
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• 2003

With respect to this research, the College of Arts and Design, Kon Kuk University founded Design Venture of KKU(Kon Kuk University) in July 2001 as an approach to tackle the issue on how to accept and respond to the waves of changes in paradigms of the 21st century represented by information revolution. Such move is to cope more effectively with the changes in the current educational environment with an aim to secure the competitive edges compatible with the conditions of each college under the uniform and standardized educational systems. Even the professionals in the design fields of this country try to find the significance in bringing out in the open the latent creative talents of the students by improving the quality of our daily necessities and putting the students through more practical training, and in creating international competitiveness of our design field by encouraging the students to gain more diverse experiences. Therefore, the purpose of this research is to present the approaches to revitalize Design Venture of Kon Kuk University which has been managed as part of the efforts to establish the new identity for the design of this country in the 21st century, and to present the new model for an enterprise which, rooted in the College, can grow into a high value-added business. The methodology for this research is based on the case study of Design Venture of Kon Kuk University and investigation into the literature. The contents of this research include the following three steps. Firstly, initial research is made into the background for founding the College of Arts and Design which had been promoted as a differentiated strategy for the long-term and short-term development plan of the College of Arts and Design, in Chungju Campus of Kon Kuk University. Secondly, the basic strategy for Vonchi, brand of Design Venture of KKU and the brand launching process are examined. Thirdly, Various approaches to revitalize the Vonchi brand recognition are collected and analyzed to present the conclusion and the alternative. Such research findings as given above on Design Venture of KKU may satisfy diverse consumer-oriented requirements on the strength of the characterization and differentiation of the college and may enhance the competitive edge of the college.

• 한국건설관리학회논문집
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• 제6권4호
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• pp.113-121
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• 2005

프로젝트의 일정 네트워크는 선-후행 관계로 정의된 액티비티들로 구성되어있다. 액티비티를 완료하는데 소요되는 기간은 현재 주택시장은 시장경제 체제 하에서의 수요자 중심으로 시장이 변화되어가고 동시에 예측할 수 없는 경기 변동의 증대가 이어지고 있다 주택 보급률은 3002년에 벌써 $100\%$를 도달 하였으며 출생률은 계속하여 감소하는 추세에 있다. 이러한 악 조건 속에서 주택 건설업체들이 앞으로 신규고객을확보하고 이윤을 창출하기 위하여 더 이상 새로운 시장을 개척해 나가기 보다는 기존의 고객을 관리함으로써 계속해서 자사의 제품을 이용 할 수 있도록 하는 것이 올바른 방향일 것이다. 이에 본 연구에서는 주택건설업 부문에서의 CRM(고객관계관리) 적용방향을 모델하우스를 중심으로 현시점의 문제점을 제시하고 앞으로 후분양제도의 도입에 맞추어 모델하우스에서의 CRM을 대체할 수 있는 방법을 제안 하고자 한다.

• 한국통신학회논문지
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• 제31권1A호
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• pp.30-37
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• 2006

본 논문에서는 차세대 이동통신 수송망에서 트래픽 클래스별 서비스 품질 요구 사항을 고려한 효율적인 대역폭 재할당 기법을 제안한다. 제안 기법은 유선망 트래픽 클래스를 실시간 클래스와 비시실시간 클래스로 구분하여 무선망 계층에서 정의된 서비스 품질 클래스를 유선망 트래픽 클래스로 매핑시킨 후 실시간 트래픽 클래스가 비실시간 트래픽 클래스의 유휴 자원을 동적으로 사용하도록 한다. 제안 기법은 운영자가 지정한 패킷 손실율과 Auto-Regressive(AR) 시계열 모델을 이용하여 주기적으로 비실시간 트래픽 클래스의 향후 필요 대역폭을 예측하며 유휴 대역폭이 발생하는 경우에만 이를 실시간 트래픽 클래스에 동적으로 할당함으로써 비실시간 트래픽 클래스의 패킷 손실율을 보장함과 동시에 시스템의 대역폭 이용율을 향상시킨다. 본 논문에서는 실제 측정된 인터넷 트래픽을 비실시간 트래픽 클래스로 이용하여 제안 기법은 링크 대역폭의 효율을 증가시켜 실시간 트래픽의 수용량을 증가시킴과 동시에 모든 시 구간에서 비실시간 트래픽 클래스에 원하는 패킷 손실율을 보장할 수 있음을 검증하였다.

• 정보보호학회논문지
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• 제25권2호
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• pp.383-393
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• 2015

최근 개인정보를 취급하는 개인정보처리자의 비용절감, 전문성을 통한 업무효율성의 증대 및 서비스 품질 개선 등의 다양한 목적에 따라 개인정보의 처리 업무를 제3자에게 위탁하는 경우가 늘어나고 있다. 이렇듯, 정보주체의 개인정보가 개인정보처리자가 아닌 제3자에 의하여 이루어지는 위탁업무가 증가함에 따라 개인정보를 위탁받아 처리하는 수탁사에 대한 개인정보보호에 대한 관심과 노력 또한 당연히 증대되어야 할 것이다. 이에, 본 논문에서는 이러한 취지에 기반하여 개인정보 위수탁 업무 진행 시 수탁사를 위한 효율적인 관리방안 뿐만 아니라, 위탁사가 위수탁 업무 전반에 걸쳐 개인정보보호 프레임웍을 정립하고 이를 토대로 수탁 업체 선정 및 계약 단계에서부터 위수탁 업무 운영 및 관리, 위수탁 업무 계약 해지 및 종료에 이르는 각 단계에서 고려해야할 개인정보보호 요건들을 제안하고자 한다.

• KIEAE Journal
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• 제16권3호
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• pp.71-76
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• 2016

Purpose: This study aimed at improving the indoor environment of the office building by measuring the indoor environment and conducting a survey. Method: The measurement was conducted from January 13 to March 16 in 2012, targeting 44 sites in same office building located in Seoul, South Korea. The lists of measurement such as dry-blub temperature, relative humidity, formaldehyde (HCHO), asbestos, carbon monoxide (CO), carbon dioxide (CO2), volatile organic compounds (VOCs) and particle pollution (PM10) were measured. In addition, illuminance which belongs to light environment and noise in sound[acoustical] environment were measured respectively. Result: The buildings showed overall pleasant conditions. In terms of the thermal, air, sound, and visual environment, each measurements were satisfied with the requirements in standard, within pleasant ranges, except several sites. However, the survey results were revealed that the office workers were mostly dissatisfied with their indoor environment. Given that the measured values were mostly within standards, the results of survey might have resulted from a compensation mentality biased toward the subjects in psychological terms.

• 한국통신학회논문지
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• 제27권1B호
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• pp.1-12
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• 2002

멀티미디어 CDMA(code division multiple access) 이동통신 서비스는 음성, 동영상, 파일 전송, 전자 우편, 인터넷 접속 등과 같은 다양한 어플리케이션들을 이동중인 사용자들에게 각각의 요구 조건에 부합할 수 있는 QoS(quality of service)로 제공하여야 한다. 본 논문에서 고려한 시스템은 음성, 스트림 데이터 및 패킷 데이터의 혼합 트래픽 환경에서 실시간 전송을 요구하는 음성 서비스에게는 선점 우선권(preemptive priority)을 부여하고, 지연에 다소 민감하지 않은 스트림 데이터 서비스에 대해서는 버퍼를 부여하였다. 또한, 최선형(best-effort) 서비스를 받는 패킷 데이터 서비스에 대해서는 기지국의 방송 제어 신호에 의해 송신 허용 확률(transmission permission probability)을 결정함으로써 효율을 향상시킬 수 있는 접속 제어 시스템을 고려한다. 본 논문에서는 멀티미디어 CDMA 이동통신 시스템의 성능 분석을 위하여 음성 및 스트림 데이터 트래픽을 2차원-마르코프 체인으로 모델링하고 분석하였으며, 잔여 용량(residual capacity)을 기초로 하여 패킷 데이터 트래픽에 대한 수학적 분석을 수행하였다.

• 한국전기전자재료학회:학술대회논문집
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• 한국전기전자재료학회 2008년도 추계학술대회 논문집 Vol.21
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• pp.259-259
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• 2008

The LTCC (Low Temperature Co-fired Ceramic) technology meets the requirements for high quality microelectronic devices and microsystems application due to a very good electrical and mechanical properties, high reliability and stability as well as possibility of making integrated three dimensional microstructures. The wet process, which has been applied to the etching of the metallic thin film on the ceramic substrate, has multi process steps such as lithography and development and uses very toxic chemicals arising the environmental problems. The other side, Plasma technology like ion beam sputtering is clean process including surface cleaning and treatment, sputtering and etching of semiconductor devices, and environmental cleanup. In this study, metallic multilayer pattern was fabricated by the ion beam etching of Ti/Pd/Cu without the lithography. In the experiment, Alumina and LTCC were used as the substrate and Ti/Pd/Cu metallic multilayer was deposited by the DC-magnetron sputtering system. After the formation of Cu/Ni/Au multilayer pattern made by the photolithography and electroplating process, the Ti/Pd/Cu multilayer was dry-etched by using the low energy-high current ion-beam etching process. Because the electroplated Au layer was the masking barrier of the etching of Ti/Pd/Cu multilayer, the additional lithography was not necessary for the etching process. Xenon ion beam which having the high sputtering yield was irradiated and was used with various ion energy and current. The metallic pattern after the etching was optically examined and analyzed. The rate and phenomenon of the etching on each metallic layer were investigated with the diverse process condition such as ion-beam acceleration energy, current density, and etching time.

• 콘크리트학회논문집
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• 제27권1호
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• pp.55-63
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• 2015

사전제작 기술은 교량을 더 안전하고 주변과 친화적인 환경을 구축하며 작업 환경에 제한이 있을 경우에도 품질과 내구성을 개선하며 공사를 수행할 수 있다. 콘크리트 충전강관을 이용한 모듈러 하부구조 교각을 제안하였다. 프리캐스트 피어캡은 피어테이블과 프리스트레스를 도입한 프리캐스트 세그먼트로 구성되어 있다. 피어테이블은 매입형 강재를 사용하여 응력의 집중을 완화하였다. 피어캡과 교각은 4개 또는 6개의 CFT기둥으로 연결된다. 피어캡의 전단강도는 피어테이블에서 연장시킨 전단 스터럽에 의해 저항하게 된다. 횡방향 프리스트레스 힘은 사용하중에 의한 인장 응력을 제어하기 위하여 도입되었다. 이 논문에서는 모듈러 구조의 유효성을 정적실험을 통하여 평가하였다. 제안된 피어캡은 설계 요구사항들을 연속 철근과 프리스트레스에 의해 만족시켰다. 모듈러 구조의 표준화는 급속교체 및 교량의 급속시공에 효과적으로 사용될 수 있다.

• International Journal of Ocean Engineering and Technology Speciallssue:Selected Papers
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• 제6권1호
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• pp.69-74
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• 2003

Recent deepwater offshore structures in the Gulf of Mexico utilize butt welded tubular joints. Application of a welded tubular joint includes tendons, production risers, and steel catenary risers. Fatigue life assessment of these joints becomes more critical, as the structures to which they are attached are allowed to undergo cyclic and sometimes large displacements around an anchored position. Estimation of the fatigue behavior of these tubular members in the design stage is generally conducted by using S-N curves, as specified in the codes and standards. Applying the stress concentration factor of the welded structure to the S-N approach often results in a very conservative assessment, because the stress field acting on the tubular has a non-uniform distribution through the thickness. Fatigue life analysis using fracture mechanics has been applied in the design of the catenary risers. This technology enables the engineer to establish proper requirements on weld quality and inspection acceptance criteria to assure satisfactory structural integrity during its design life. It also provides guidance on proper design curves and a methodology for accounting for the effects of non-uniform stress distribution through the wall thickness. Still, there is inconsistency when designing tubular joints using a conventional S-N approach and when specifying weld flaw acceptance criteria using fracture mechanics approach. This study developed fatigue curves that are consistent with both the S-N approach and the fracture mechanics approach. Accounting for non-uniform stress distribution and threshold stress intensity factor were key parameters in relating both approaches. A series of S-N curves, generated from the fracture mechanics approach, were compared to the existing S-N curves. For flat plate butt joint, the S-N curve generated from fracture mechanics matches with the IIW class 100 curve when initial crack depth was 0.5 mm (0.02). The new curves for tubular joint agree very well with the experimental results. The comparison also indicated the degree of conservatism built into the API X design curve.