• The Journal of the Convergence on Culture Technology
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• v.10 no.4
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• pp.133-144
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• 2024

The purpose of this study is to enhance the competitiveness of jewelry distribution company by analyzing the effect of workers' motivations on workers' job engagement and workers' job engagement on job satisfaction and organizational commitment.A survey was conducted from October 2023 to November 2023 for workers of jewelry distribution company in Korea. Factor analysis and Regression analysis were performed on the collected 242 questionnaires using the SPSSWIN ver. 18.0 program. As a result of the analysis of this study, first, the intrinsic (enjoyment, challenge, achievement) and extrinsic motives (recognition, rewards, promotion) of jewelry distribution company worker had a positive effect on job engagement (absorption, dedication, vitality). Second, the job engagement of worker had a positive effect on job satisfaction. Third, the job engagement of worker had a positive effect on organizational commitment.

• The Journal of the Korea Contents Association
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• v.18 no.4
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• pp.223-233
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• 2018

This study examined the factors influencing the suicide prevention gatekeeper participation of 299 grassroots organizational leaders in Gangwon province. For this purpose, participation of activities of suicide prevention gatekeeper was classified into performance intention and intervention level. Performed hierarchical multiple regression analysis by setting participation motives which showed a significant correlation with participation of suicide prevention gatekeeper as independent variables. As a result of the analysis, participation motives affecting performance intention were a sense of mission as a leader, benefits or rewards for activities, the meaning and purpose of suicide prevention, government policy. And participation motives affecting intervention level were invitation of public officials, the meaning and purpose of suicide prevention. Based on the results of this study, suggested implications for the participation of suicide prevention activities in community grassroots organizations and suggestions for future activation.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.31 no.7 s.262
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• pp.756-763
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• 2007

The majority of catastrophic wheel failures are caused by surface opening fatigue cracks either in the wheel tread or wheel flange areas. The inclined cracks at railway wheel tread are initiated and the cracks are caused by wheel damage-spatting after 60,000 km running. Because the failured railway wheel is reprofiled before regular wheel reprofiling, the maintenance cost for the railway wheel is increased. Therefore, it is necessary to analyze the mechanism for initiation of crack. In the present paper, the combined effect on railway wheels of a periodically varying contact pressure and an intermittent thermal braking loading is investigated. To analyze damage cause for railway wheels, the measurements for replication of wheel surface and the effect of braking application in field test are carried out. The result shows that the damages in railway wheel tread are due to combination of thermal loading and ratcheting.

• Korean Journal of Microbiology
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• v.41 no.4
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• pp.312-315
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• 2005

Coprinellus congregatus, known as an inky cap, is autolysed into ink soon after the maturation of the mushrooms. Electron microscopy was used to examine the ultrastructural changes associated with the autolysis as an initial step to understand the role of hydrolytic enzymes in this process. During the early stages of maturation of the mushrooms, most of cytoplasm of hymenial and subhymenial tissues seemed to be transported to the developing basidiospores. The depletion of cytoplasm within the tissues and the maturation of the basidiospores may initiate the degradation of the cell walls of the tissues. Both hymenial and subhymenial tissues seemed to degraded at the same time. This study suggested that the critical steps in the autolysis of mushrooms is not the degradation of the cytoplasm, but the degradation of the cell wall by hydrolytic enzymes such as chitinases.

• The Journal of the Convergence on Culture Technology
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• v.9 no.4
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• pp.587-592
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• 2023

Plant growth is regulated by a variety of factors, including organic matter availability. Organic nutrients are carbohydrate molecules from photosynthetic products produced by tissues associated with carbon and energy fixation called "sources". These compounds flow through plant vascular bundles into non-photosynthetic or growing tissues called "sinks". Among these possible compounds, the disaccharide fructosyl glucose, sucrose, is the most representative. During the transport of sucrose, the pathway from the source to the sinks can include hydrolysis of sucrose into glucose and fructose derivatives or direct transfer of sucrose. Among the enzymes involved in this, β-D-fructofuranosidase is the most important. Soluble neutral β-D-fructofuranosidase, one of several isoenzymes, is located in intracellular protoplasts and helps plant cells metabolize sucrose to produce energy. In order to track the activity of this enzyme during the course of plant growth, histological methods were used for the most effective immunolocalization. As a result, the activity was higher in the phloem and epidermis than in the mesophyll tissue in the leaf. In the growing stem, activity was high in the phloem, epidermis, and cortex. The activity of the root, which is a sink tissue, was high in all parts, but especially the highest in the root tip part. It is thought that this is because it helps unloading of sucrose in sink tissues that require sucrose degradation and plays a role in hydrolysising sucrose.

• Korean Journal of Head & Neck Oncology
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• v.36 no.2
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• pp.55-59
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• 2020

Hemophagocytic lymphohistiocytosis (HLH) is a rare but life-threatening one syndrome of excessive immune activation. This immune dysregulation disorder is prominently associated with cytopenias and combinations of clinical signs and extreme inflammation symptoms. For survival, it is important to diagnose early and treat appropriately. We report a case of 10 years old boy who was admitted to the hospital with a month history of fever and cervical lymph node enlargement. There were signs of hemophagocytic histiocytosis in the lymph node and bone marrow. The etiology, diagnosis, and treatment of hemophagocytic lymphohistiocytosis are reviewed.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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• 2001.05a
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• pp.597-600
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• 2001

ETSI has dominated in the field of mobile technology standardization, for instance GSM. The reasons why ETSI has a dominating power on standardization of the technology are as fellows. Firstly, ETSI has thoroughly monitored the external environment surrounding ETSI standardization activities, and has positioned well in this context. And secondly, ETSI has established flexible organizational structure and various working methods e.g. Bake-off. In this paper, Bake-off will be analyzed for drawing implications to working methods of Telecommunication Forums in our nations.

• Transactions of Materials Processing
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• v.18 no.6
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• pp.458-464
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• 2009

Thermal energy control is a important factor to control properties of large sized product in ingot-forging. Good control of thermal energy helps to increase characteristics and eliminate defects of large cast-forged part, such as large sized forged shell. We have studied about not only large size ring forging process and after heat treatment process by FEM simulation. Changes of temperature and microstructure for forged shell were predicted according to different heat treatment conditions. Therefore, we can choose the proper heat treatment condition by FEA. The sectional properties confirmed by practical experiment and evaluation have presented possibilities of process design by computational analysis.

• 한국IT서비스학회:학술대회논문집
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• 2007.05a
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• pp.494-499
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• 2007

1988년 한국이동통신서비스 주식회사에서 휴대폰 서비스를 개시하고, 1994년 한국통신에서 인터넷 상용서비스를 실시할 때 만해도 2007년 현재 우리의 삶이 휴대폰과 인터넷이라는 정보통신 환경에 이렇게 깊이 의존할 것을 예측한 사람은 거의 없었다. 이제 인터넷과 휴대폰은 우리 생활에서 없어서는 안 될 삶의 일부가 되었고, 사회를 구동시키는 중요한 요인이 되었다. 현재 우리는 누구나, 언제, 어디서나, 어떤 기기를 사용하더라도 원하는 정보에 접근할 수 있는 유비쿼터스 시대를 향해 나아가고 있다. 유비쿼터스는 단순히 정보통신 컴퓨팅 환경이라는 기술적 의미를 뛰어넘어, 사회를 변혁시키는 유비쿼터스 혁명이라는 시대적 패러 다임의 변화를 의미하게 되었다. 유비쿼터스의 특징으로는 센싱, 네트워킹, 지능화를 들 수 있다. 센싱은 센서를 이용하여 사람, 사물(기기)에 대해서 모니터링하는 것이며, 네트워킹은 네트워크 통신기술을 이용하여 사람, 사물(기기)간 모니터링된 정보, 서비스될 정보를 서로 연계하는 것이며, 지능화는 기기, 사물이 단순히 정보와 지식을 전달하는 것에서 자동화 단계로까지 발전하는 것을 의미한다. 유비쿼터스 기술이 뒷받침되는 유비쿼터스 사회는 개방, 공유 참여가 가능한 열린 사회이며, 사물, 기기가 지능화되는 지능형 사회이며, 기기, 산업, 조직, 시스템간 융복합이 이루어지는 융복합 사회이며, 개인의 기호와 요구에 부웅하게 되는 개인중심 사회이며, 지식과 문화, 예술, 아이디어가 가치를 창출하는 콘텐츠 사회라는 특징을 보일 것이다.

• Proceedings of the Korean Society for Technology of Plasticity Conference
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• 2009.05a
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• pp.102-106
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• 2009

Thermal energy control is a important factor in a large size casting and forging. Good control of thermal energy makes characteristics and defect of large cast-forged part, such as large sized forged shell. We have studied about not only large size ring forging process and after heat treatment by FEM simulation. Also, changes of temperature and microstructure for forged shell were predicted. Therefore, we can choose the proper heat treatment condition by FEA. The sectional properties confirmed by practical experiment and evaluation have presented possibilities of process design by computational analysis.