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정주화,전기흥 한국콘텐츠산업학회 2023 콘텐츠와 산업 Vol.5 No.2
1인 가구와 맞벌이 가구가 증가함에 따라 가정에서 조리하는 시간의 상당부분이 사라지고 있다. 이를 대체하고 있는 것이 간편식 요리이며, 이 중 대표적인 제품 이 밀키트이다. 밀키트의 판매량은 코로나19 상황으로 외식이 적어지며 급속히 증가하고 있다. 밀키트 시장은 매년 30% 이상으로 크게 성장하고 있다. 이 연구에 서는 밀키트 시장의 성장 상황을 보며, 밀키트의 이용의도를 높이는 요인으로 밀키트에 효용이 있음을 제시하였다. 그리고 밀키트의 효용을 구성하는 선택요인으 로 제품의 질, 경제적 가치, 편리한 이용의 3가지 요인이 있음을 밝혔다. 즉 밀키트의 이용의도가 높아지려면 밀키트의 효용을 높여야 하고, 밀키트의 효용을 높이 기 위해서는 소비자 관점에서 밀키트 제품의 질, 경제적 가치, 편리한 이용을 높여야 한다는 것이다. 이 연구에서는 이를 실증적으로 검증하였다. 밀키트 관련 연구 를 통해 알리고자 하는 가장 중요한 시사점으로 이 연구에서는 효용을 제시하였다. 효용이 높지 않고서는 제품의 이용의도가 높아질 수 없다. 이 연구에서는 효용 관점에서 소비자의 선택요인을 살펴보았다는 점이 가장 뚜렷한 시사점이다. Single-person households and double-income households are increasing. As a result, much of the cooking time at home is disappearing. Home Meal Replacement occupies this position. Meal kit is a representative product of Home Meal Replacement. Sales of meal kits are increasing rapidly as fewer people eat out due to the COVID-19 situation. The meal kit market is growing significantly at more than 30% per year. In this study, it was suggested that the meal kit is useful as a factor that increases the intention to use the meal kit. This study revealed that there are three factors that make up the utility of meal kits: product quality, economic value, and convenient use. In order to increase the intention to use meal kits, the utility of meal kits must be increased, and in order to increase the utility of meal kits, prduct quality, economic value, and convenient use of meal kit products must be increased from a consumer's point of view. In this study, this relationship was empirically verified. As the most important implication to be informed through research related to meal kit, this study presented utility. Without high utility, the intention to use the product cannot be increased. In this study, the clearest implication is that the consumer's choice factors were examined from the perspective of utility.
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[解說] 車室 內部騷音의 特性과 低減에 關한 實驗的 考察(上)
정주화 한국자동차공학회 1983 오토저널 Vol.5 No.2
The nature and the sources of sound in cars is discussed in the light of many previous works, and the importance of the system resonances inside cars is suggested.<br/> An investigation of a 'boom' problem in a small size passenger car is discribed. It was established that the 'boom' frequencies coincided with engine firing frequency and also with several system resonances. To find out main transmission path of the noise to the car interior, various possible sources were eliminated from the investigation by means of simple modification to the vehicle.<br/> Data on the structural modes of the body, and the acoustic modes of the passenger compartment at various forcing cases were obtained to provide better understanding of the problem. It was found that the acoustic resonance responsible for the boom was controlled largely the bending motion of the floor.<br/> To investigate the effect of the structural modification to the acoustic response, center floor of the car was reinforced. A great reduction of the noise inside the car especially at the offending speed range, was achieved by this modification.
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만성 정신분열증환자의 보체성분 C4A 그리고 C4B의 이인자형 빈도에 관한 연구
정주화,정태호,정해익 大韓神經精神醫學會 1995 신경정신의학 Vol.34 No.2
This study was carried out to see if there were any peculiar phenotypes of complement C4A and C4B distribution in patients with chronic schizophrenia. Allotypes were analyzed by electrophoretic separation on agarose gel and then identified by immunofixation technique. The diagnosis of schizophrenia was made according to DSM-Ⅲ-R. The schizophrenic patients consisted of 13 paranoid, 14 undifferentiated and 4 disorganized types. The C4 allotype frequencies of these subjects were compared with the 160 healthy controls. The results were as follows : 1) C4A6 antigen frequency was significantly increased in all schizophrenics compared to the control group. 2) C4A4 antigen frequency was significantly increased in paranoid type schizophrenics patients compared to the control group. 3) C4A6 antigen frequency was significantly increased in undifferentiated type schizophrenics patients compared to the control group. 4) C4A6 antigen frequency was significantly increased in schizophrenics patients with family history compared to the control group. This leads C4A6 and C4A4 to be indicative of the possibility of a biological or a genetic marker. A further study, however, is required on a large basis of subjects.
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정주화,박대규,김현준 대한생물치료정신의학회 1995 생물치료정신의학 Vol.1 No.1
This article would include a comprehensive review of biological markers in schizophrenia. A marker is measurable variation in structure, function, or performance that is associated with an illness. There are at least two important kinds of markers in psychiatry. The first, state marker is found in at least a subgroup of acutely ill patients. The second kind, the trait marker is genetically controlled, seen during illness, before symptom first appear, and between episodes, and is also prevalent in close relatives. Finding biological markers for schizophrenia have been rendered particularly difficult mainly because of three factors : diagnostic uncertainty ; the possibility that schizophrenia is caused by the concerted action of more than one gene ; unlike other organs, central nervous system has seemed nearly impenetrable to researchers. Recent technological advances has made possible the exploration of numerous aspects of brain function and structure, and has permitted the development of biological measures that could potentially serve as markers of schizophrenia. The search for biological markers has extended through a wide range of disciplines, including psychophysiology, neurochemistry, neuroendocrinology, psychoimmunology, neuropathology, psychiatric genetics, neuropsychology, and brain imaging. However, despite dramatic progress in these research areas, biological markers with sufficient specificity, sensitivity and replicability to be used in clinical evaluation have not yet been identified. Nevertheless, there are several candidates. In this review, we describe characteristics and research methods of putative biological markers, and evaluate both their promise and their limitations, and discuss potential utility in clarifying diagnostic, diagnostic, genetic, therapeutic, and prognostic issues in schizophrenia.
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