• 한국해양공학회:학술대회논문집
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• 한국해양공학회 2001년도 춘계학술대회 논문집
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• pp.49-52
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• 2001

The more the population grow, the severer the shortage of a basic human needs such as food, clean water, energy resources and so on. We had proved the possibility of utilizing deep ocean water as a environmental friendly resource to solve comprehensively above-mentioned problems for mankind based on observation and analysis of water quality. This study aims to evaluate feasibility of deep ocean water application, and establish multipurpose development and cascade utilization system of deep ocean water in the coastal zone of East sea to promote ocean development and fisheries industries.

• 의료ㆍ복지 건축 : 한국의료복지건축학회 논문집
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• 제6권11호
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• pp.47-57
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• 2000

In western countries, the community care for the elderly people has developed, because of heavy cost and isolation problem in the society of institutional care basis. Since 1980, 'home care for the elderly' has introduced in korea. One of them is 'Multipurpose senior center'. However it has built without rational space programming and architectural planning analysis. Therefor, this study is to establish the function and space programming of multipurpose senior center.

• Communications for Statistical Applications and Methods
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• 제8권2호
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• pp.375-382
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• 2001

The agricultural machine estimated sales survey is a survey to estimate annual sales quantities of eight major agricultural machines such as tracter, combine, etc. The purpose of this study is to design a multipurpose sample for the agricultural machine estimated sales survey. Main achievements of this study are to present an efficient stratification criterion and to suggest a reasonable estimation method by using the concept of post-stratification.

• 대한의용생체공학회:의공학회지
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• 제10권2호
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• pp.179-184
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• 1989

There are microwave hyperthermia, microwave surgical knife, and microwave tissue coagulator etc. as the cure-appliance using microwave. The object of this paper is to develope the multipurpose cure-appliance which has the functions that can be used intestinal tumor as well as the existing superficial tumor. And this also have the function of surgical knife and tissue coagulator with endoscope. And then ascertain its functions through the experiments, and to suggest the direction for reserch hereafter.

• 산업공학
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• 제16권spc호
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• pp.132-137
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• 2003

We consider scheduling jobs on multipurpose machines where jobs can be processed by a subset of the machines operated in parallel with the objective of minimizing makespan. We apply LPT(Longest Processing Time first) algorithm and prove that its posterior worst-case performance ratio is at most $log_24m/(1+{\lambda})$, where \lambda is the number of machines eligible for processing the job with the latest completion time. In general, LPT is shown to always find a schedule with makespan at most $log_24m/3$ times optimum.

• 물과 미래
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• 제6권1호
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• pp.36-39
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• 1973

• 한국의료질향상학회지
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• 제6권1_2호
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• pp.48-79
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• 1999

Background : The clothing is considered as second skin. The patient clothing needs basic clothing demands which are comfortable, functional and aesthetical and special demeands which are associated with medical examination, treatment and management of daily-life inconveniences. The patient is weak and labile to psychic trauma and has limitation of movement. So the help of others is needed. But recent patient clothing does not satisfy above demands. So the design, making and management of patient clothing to satisfy those demands are very important. The purpose of this study' is to develop multipurpose clothing which is comfortable, functional, aesthetical and satisfying patients and medical personnels. Method : The questionnaires of existing patient clothing were tested by patients, medical doctors, and nurses. After analyzing two types of questionnaires, eight types of experimental patient clothing were made. After preference test, shortcomings were removed and merits were adapted. One type of multipurpose patient clothing mixing eight above experimental clothing was made. The state of wearing and moving were videotaped. The videotape-recoding was watched by patient, caregivers(medical doctors, nurses) and clothing specialists. Result : The general reaction for experimental clothing were positive by the group of patients, medical personnels and clothing specialist, there were significant differences among three groups. Conclusion : It was thought that to develop one type of multipurpose clothing is possible. If the studys for patient clothing which are free-size and economic matters that are type of clothes and method of washing are made in depth, the desirable patient clothing will appear.

• 물과 미래
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• 제25권1호
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• pp.83-92
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• 1992

다목적 저수지의 운영을 위해서 여러 가지 대안의 운영율로부터 최상의 안을 선택할 때에는 시스템에 주어진 주요 목적에 부가하여 세부적인 평가 기준들도 고려하여야 한다. 특히 평가 단위가 서로 다른 여러개의 평가기준을 고려할 때에는 경험이나 발견법 만으로는 최상의 안을 선택하기가 어렵게 된다. 다기준 의사 분석기법을 이요하면 여러대안들을 각 평가 기준에 다라 체계적으로 비교하여 대안들의 우선 순위를 결정함으로써 최상의 운영율을 선택할 수 있다. 본 연구에서는 다목적 저수지 시스템의 운영율 평가를 위한 평가 기준을 규명하여 제시하였으며, 다기준 의사분석 기법을 이용하여 충주 다목적 저수지 시스템에 대한 4개의 운영율을 9개의 평가 기준에 따라 평가하였다. 적용 결과 대규모 다목적 저수지 시스템의 운여오가 같이 많은 평가기준을 고려하여 여러 가지 대안의 운영율을 평가할 때에는 이러한 기법이 매우 효율적임을 알 수 있다.

• Restorative Dentistry and Endodontics
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• 제23권2호
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• pp.586-596
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• 1998

Amalgam is one of the most commonly used dental restoration material because of its convenience, economic and physical properties. But microleakage in the tooth and amalgam interface has been its major problem, and many efforts have been made to overcome this shortcoming. The purpose of this study is to compare the effect of various liners on microleakage of amalgam restoration. Cavities were prepared on the buccal or lingual surface of ninety sound, extracted human premolars and six different liners (Tubulitec$^{(R)}$, Superbond D-liner II Plus$^{(R)}$, Superbond D-liner II Plus$^{(R)}$ with polymer, Scotchbond Multipurpose Plus$^{(R)}$, Copalite$^{(R)}$, No liner) were unapplied according to manufacturer's instructions and amalgam had been condensed immediately. The specimens were thermocycled by dipping in methylene blue dye at $5^{\circ}C$ and $55^{\circ}C$ for 1500 cycles. The amalgam-tooth interface was examined under stereobinocular microscope and the dye penetration was scored. The results were as follows : 1. The Tubulitec$^{(R)}$ group showed less microleakage than no liner or Copalite$^{(R)}$ group (p<0.01). 2. The Tubulitec$^{(R)}$, Superbond D-liner II Plus$^{(R)}$, Superbond D-liner II Plus$^{(R)}$ with polymer and Scotch bond Multipurpose Plus$^{(R)}$ groups were not significantly different. 3. The Copalite$^{(R)}$ and Scotchbond Multipurpose Plus$^{(R)}$ groups were not significantly different. Using the polystyrene liner and resin liners under admixed type of high-copper amalgam restoration significantly reduced microleakage in the tooth-amalgam interface. Further clinical studies on polystyrene liner are recommended.

• 대한치과보철학회지
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• 제44권4호
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• pp.383-393
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• 2006

Statement of problem : Limited research on flowable resin has been undertaken on its application directly on dentin associated with the adhesive systems. Purpose : This study was to evaluate the shear bond strengh and fracture aspect of flowable resin on human dentin with various types of dentin bonding adhesives with thermo cycling effect. Materials and methods: Filtek-Flow(3M ESPE, USA) was used as flowable resin and Eighty human molars were randomly divided into 4 groups : three dentin bonding adhesives (Scotchbond-Multipurpose : 3-step contentional system, One-Step : One-bottle system. Prompt L-Pop : All-in-one, self-etching primer) and 32% etching treatment without bonding adhesive as a control group. For evaluating their durability of bonding, each group was subdivided : storaging in the water at 37$^{\circ}C$(24 hours) and thermocycling (0$^{\circ}C$-55$^{\circ}C$, 30 seconds intervals, 1000 cycle). Shear bond strength tests were performed and resin-dentin interface and fracture mode were observed. Results were analysed by one-way ANOVA and Scheffe's multiple range test. Results and Conclusion : 1. At 0 cycle, the mean shear bond strength of One-Step exhibited the highest value of all groups(p<0.05), and there were no significant differences between Prompt L-Pop and Scotchbond-Multipurpose, Scotchbond-Multipurpose and control(p>0.05). After 1000 thermocycling, One-Step exhibited higher value than other groups(p<0.05), and there were no significant differences among other groups (p>0.05). 2. The shear bond strength of each group was significantly decreased after thermocycling except Scotchbond-Multipurpose (p>0.05). 3. The most common failure mode was adhesive type and mixed type, next in order.