• 한국조경학회지
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• 제32권1호
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• pp.157-169
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• 2004

This study aims to review the research trends concerning environmental psychology. The scope of review is limited to the papers that dealt with theoretical and case-directed investigation research about the relationship between socio-physical environments and human beings. The relationship has been investigated by diverse human reactions such as cognitive, emotional, analytical, behavioral, and comprehensive. 219 papers were reviewed in two steps. In the first step, the ratio of the papers in the field of environmental psychology to the total papers published in the Journal from 1973 to 2004 was analyzed. Second, all the 219 papers were classified by such three criteria as the type of the paper(theoretical, review, case investigation), the methodology taken, and the main theme of the paper. The main findings from the review are summarized as follows; 1. Out of the 219 papers, the number of the theoretical papers was 4 (1.8%), whereas the number of the case investigation papers was 185 (84.5%). 2. Out of the 30 review papers, the main methodology used was simple introduction (15 papers, 50%) and the main theme was research methodology (36%), whereas analytic comparison was used only in 10 papers (33%) and theory review was only found in 6 papers (20%). 3. Out of the 185 case investigation papers, experimental method was found in 34 papers (18%), whereas 99 papers used correlational method (54%). Based on the findings, it was suggested that both theoretical and case-directed research should be performed in order to enhance the state of art in environmental psychology. Theoretical research as a framework to understand the empirical findings are as important as the case-investigation research peformed by scientific experimental method.

• 시큐리티연구
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• 제4호
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• pp.219-255
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• 2001

An independence of investigation authority of police is a long desire of Korean police. This study examines a theoretical dispute of the police and the prosecution, their duties and investigation organization with the subject of an independence of investigation authority in Korean police. The object of this study is to present the problem of investigation system of police and devices of an independence of the police investigation authority.

• 한국수학교육학회지시리즈A:수학교육
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• 제54권4호
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• pp.317-334
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• 2015

In this article we study structure of the concept of creative products in mathematics using mathematical creative products. We develop MCPSS1 that improve reliability and validity of MCPSS(Creative Product Semantic Scale in Mathematics). And we search structure of the concept of creative products in mathematics using mathematical creative products focused on theoretical investigation. So we suggest structure model of the concept of creative products focused on theoretical investigation. We compare the result with preceding research using various mathematical creative products, find some difference between relations of sub-factors of structure of the concept of creative products. Our result will provide meaningful data to mathematics education researchers that want to know structure of the concept of creative products in mathematics.

• Journal of the Optical Society of Korea
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• 제14권4호
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• pp.298-304
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• 2010

The pair-induced quenching (PIQ) effect in a highly doped bismuth oxide-based erbium-doped fiber amplifier (EDFA) was theoretically and experimentally investigated. In the theoretical investigation, the bismuth oxide-based EDFA was modeled as a 6-level amplifier system that incorporated clustering-induced concentration quenching, cooperative up-conversion, pump excited state absorption (ESA), and signal ESA. The relative number of paired ions in a highly doped bismuth oxide EDF was estimated to be ~6.02%, determined by a comparison between the theoretical and the experimentally measured gain values. The impacts of the PIQ on the gain and the noise figure were also investigated.

• 한국전산유체공학회:학술대회논문집
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• 한국전산유체공학회 2007년도 추계 학술대회논문집
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• pp.236-242
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• 2007

A theoretical and numerical investigation is performed on the flow in a micronozzle for precision-controlled seal dispenser. The working fluid is a highly viscous epoxy used as sealant in producing LCD panels, which contains a number of tiny solid spacers. Flow analysis is conducted in order to achieve the optimal design oj internal geometry of a nozzle. A simplified design analysis methodology is proposed for predicting the flow in the nozzle based on the assumption that the Reynolds number is much less than O(1). The parallel numerical computations are performed by using a CFD package FLUENT. Comparison discloses that the theoretical model gives a good prediction on the distribution of pressure and wall shear stress in the nozzle. However, the theoretical model has a difficulty in predicting the maximum wall shear stress as found in a limited region near edge by numerical computation. The theoretical and numerical simulations provide the good guideline for designing a dispensing micronozzle.

• 한국전산유체공학회지
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• 제12권4호
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• pp.54-60
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• 2007

A theoretical and numerical investigation is performed on the flow in a micronozzle for precision-controlled sealant dispenser. The working fluid is a highly viscous epoxy used as sealant in producing LCD panels, which contains a number of tiny solid spacers. Flow analysis is conducted in order to achieve the optimal design of internal geometry of a nozzle. A simplified design analysis methodology is proposed for predicting the flow in the nozzle based on the assumption that the Reynolds number is much less than O(1). The parallel numerical computations are performed by using a CFD package FLUENT. Comparison discloses that the theoretical model gives a good prediction on the distribution of pressure and wall shear stress in the nozzle. However, the theoretical model has a difficulty in predicting the maximum wall shear stress as found in a limited region near edge by numerical computation. The theoretical and numerical simulations provide the good guideline for designing a dispensing micronozzle.

• Bulletin of the Korean Chemical Society
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• 제16권8호
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• pp.729-736
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• 1995

• 대한의용생체공학회:의공학회지
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• 제2권1호
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• pp.3-14
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• 1981

A theoretical investigation of the origin of the spontaneous firing in the squid axon was done with a mathmatical computer modelling based on the Hodgkin-Huxley equation. It is strongly believed that the existence of calcium ions in the membrane is essential to cause firing. The results of the computer simulation of the modelling indicate that the sites of calcium ions in the membrane might be near the potassium channel and the leakage channel plays an important role in the firing. The orientation of the future research project was suggested. And also, a theoretical investigation of the origin of the firing in the propagating action potential was done in the same way.

• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 2005년도 추계학술발표대회 논문집
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• pp.276-279
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• 2005

FRP Composite materials are widely applicable in the construction industries as a load-bearing structural element or a reinforcing and/or repairing materials for the concrete. In this paper, we presented the flexural behavior of FRP Re-bar and steel reinforced concrete beams and only FRP re-bars reinforced concrete beams. FRP Re-bar manufactured by different fibers but the same vinylester resin. Also, surface of FRP Re-bars is coated garnet and glass fiber by epoxy to increase the adhesive to concrete. Experimental investigation pertaining to the load-deflection and load-strain characteristics of two classfied specimens is presented and the theoretical prediction is also conducted. In the investigation, the effects of FRP Re-bar reinforcement are estimated. The experimental results arc compared with theoretical predictions. Good agreements arc observed.

• 한국철도학회:학술대회논문집
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• 한국철도학회 2008년도 춘계학술대회 논문집
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• pp.964-968
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• 2008

Infrared thermography using high-speed infrared camera has been recognized as a powerful method for various potential applications, such as nondestructive inspection, failure analysis, stress analysis, and medical fields, due to non-contact, high-speed, and high spatial resolution at various temperature ranges. In this investigation, damage evolution due to generation of hot spots on railway brake disc was investigated using the infrared thermography method. A high-speed infrared camera was used to measure the surface temperature of brake disc as well as for in-situ monitoring of hot spot evolution. From the thermographic images, the observed hot spots and thermal damage of railway brake disc during braking operation were qualitatively analyzed. Moreover, in this investigation, the previous experimental and theoretical studies on hot spots phenomenon were reviewed, and the current experimental results were introduced and compared with theoretical prediction.