• 한국전자거래학회지
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• 제1권1호
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• pp.141-157
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• 1996

Data sharing is a major challenge to implement CALS. STEP is the international standard for the product model data exchange among heterogeneous systems and plays a key role in CALS. Advances in computer networks are rapidly changing the product development processes. The network oriented modeling system premises to integrate design activities across the enterprise. To achieve goals of CALS 3-dimensional concurrent modeling that complies international standard is required since integrity and common perception of product data can be assured. This paper presents 3-dimensional concurrent geometric modeling on high speed network using STEP and methodologies.

• 한국전자거래학회:학술대회논문집
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• 한국전자거래학회 2001년도 International Conference CALS/EC KOREA
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• pp.615-624
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• 2001

Internet technology opens up another domain for building future CAD/CAM environment. The environment will be global, network-centric, and spatially distributed. In this paper, we present a new approach to network-centric virtual prototyping (NetVP) in a distributed design environment. The presented approach combines the current virtual assembly modeling and analysis technique with distributed computing and communication technology fur supporting virtual prototyping activities over the network. This paper focuses on interoperability, shape representation, and geometric processing for distributed virtual prototyping. STEP standard and CORBA-based interfaces allow the bi-directional communication between the CAD model and virtual prototyping model, which makes it possible to solve the problems of interoperability, heterogeneity of platforms, and data sharing. STEP AP203 and AP214 are utilized as a means of transferring and sharing product models. In addition, Attributed Abstracted B-rep (AAB) is introduced as 3D shape abstraction for transparent and efficient transmission of 3D models and for the maintenance of naming consistency between CAD models and virtual prototyping models over the network.

• 약학회지
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• 제31권3호
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• pp.133-139
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• 1987

These studies were attempted to investigate the preventive effect of Ganoderma lucidum extract administered concurrently with glutathione on the liver damage induced by carbon tetrachloride ($CCl_4$) in rats. S-GOT and S-GPT activities of all the pre-treatment groups were significantly decreased, as compared with those of the control intoxicated by $CCl_4$. The concurrent administrations of Ganoderma lucidum extract with glutathione (100+100mg/kg, 200+100mg/kg, and 400+100mg/kg, respectively) were more effective than the individual administrations. i.e., Ganaderma lucidtcm extract (100, 200 and 400mg/kg, respectively) and glutathione (100, 200 and 400mg/kg, respectively). On the determination of lipid-peroxidation in liver, the concurrent administrations of Ganoderma lucidum extract with glutathione (100+100mg/kg, and 200+100mg/kg, respectively) significantly reduced the liver TBA values. Although hepatic cellular necrosis and fatty acid deposit were remarkably increased by $CCl_4$ intoxication, the concurrent administration of Ganoderma lucidum extract with glutathione (200+100mg/kg) reduced the pathological changes of parenchymal cell necrosis and fatty changes around centrilobalar area of the control. These findings indicate that the concurrent administrations of Ganoderma lucidum extract with glutathione showed better improvements than the individual administrations of them in all pathological aspects, in particular, against hepatitis and hepatic necrosis due to the cellular necrosis and fatty infiltration.

• 대한물리의학회지
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• 제8권4호
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• pp.573-582
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• 2013

PURPOSE: The purpose of this study was to establish the reliability and validity of the Wheelchair User's Shoulder Pain Index (WUSPI), which was translated into Korean for long-term wheelchair users. This index measured 15 functional activities, including transfer, self-care, wheelchair mobility and general activities. METHODS: To assess test-retest reliability, 23 long-term wheelchair users completed this self-administered index twice within the same day. Reliability was determined by the intraclass correlation coefficient (ICC), and Cronbach's alpha was used to measure internal consistency. To examine concurrent validity, 21 long-term wheelchair users completed the questionnaire, and we examined the correlation between the index score and the shoulder range of motion measurements. RESULT: The results showed that the intraclass correlation for test-retest reliability of the total index score ranging from .88 to .99 was good to excellent. Additionally, Cronbach's alpha was .96. The internal consistency indicated excellent. Concurrent validity showed negative correlations of total index score to range of motion measurements of shoulder flexion (rho=-.58), extension (rho=-.09), abduction (rho=-.59), external rotation (rho=-.07) and internal rotation (rho=-.3), suggesting a relationship of total index score to loss of shoulder range of motion. CONCLUSION: The Korean WUSPI shows not only high reliability and internal consistency, but also concurrent validity with loss of shoulder flexion and abduction.

• 청정기술
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• 제6권1호
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• pp.1-6
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• 2000

현재 우리나라에서는 제품 설계 단계에서, 기능 설계와 제품의 생산 문제를 동시에 해결하려는 concurrent engineering이 발전되고 있고, 여기에 추가하여 environment의 영향을 고려한 concurrent 설계의 개발이 필요한 시기가 되었다. 청정 기술이 제품 설계단계에서 활용될 수 있는 예를 제시한다. 또한 design engineer가 환경문제를 해결하게 하기 위하여는, 기초기능 specification 단계부터, 제품별 환경 spec과 같은 data base가 PC에서 쉽게 점할 수 있도록 청정기술자의 도움이 필요하다.

• International Journal of Quality Innovation
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• 제8권2호
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• pp.115-131
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• 2007

The vehicle development process (VDP) is iterative in nature with numerous interactions and information flows between design groups and between development phases. The VDP has been changed from a sequential-functional development to a concurrent-team based approach. Concurrent execution of design activities may reduce the development lead-time, but it increases the managerial complexity in the VDP. A system dynamics model was developed to understand the transient behavior of parallel, overlap, and sequential processes in the VDP and to determine the optimal level of overlapping considering the development lead-time and total number of reworks. The simulation results showed that different execution processes should be used, depending upon the intensity of reworks.

• 약학회지
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• 제23권1호
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• pp.11-16
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• 1979

Benorylate and ethoxybenzamide have been used alone or in combination as an analgesic, antipyretic and antiinflammatory agent. We investigated the significance of the differences of analgesic activities between single and concurrent administration of benorylate and ethoxybenzamide and lorazepam in mice and also antipyretic activity between single and concurrent administration of benorylate and ethoxybenzamide in rats. 1). Concurrent administration of each half dose of benorylate and ethoxybenamide showed much inhibiting effect on the acetic acid-induced writhing syndrome of mice than the above drug alone, and the some increased analgesic response by hot plate method. 2). The synergistic and analgesic effect of combined administration of benorylate and lorazepam was found to be significant. 3). Antipyretic effect of half-dose combined administration of benorylate and ethoxybenzamide on the rat pyrexia induced by yeast(s.c.) and T.T.G. (i.v.) was shown to be similar to the effect of each drug.

• 시스템엔지니어링학술지
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• 제2권2호
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• pp.11-20
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• 2006

For systematic and effective achievement of Military R&D(Research and Development) processes and activities, information system which supports the concept of Systems Engineering is necessary. WISEMAN(Weapon System Information Integration for System Engineering and Management) is an information integration system, which can provide various kinds of interrelated application functions and assist the collaboration and concurrent engineering activities for weapon system R&D processes and activities. WISEMAN can manage the design information and configuration data of the target development products. It takes charge of the processes and histories about the product data, makes to share all the design information, and provides important application functions for R&D processes such as requirement management, product structure management, parts Management, documents and CAD drawing management, design change management, TDP(Technical Data Package) management etc., and in conjunction with these functions WISEMAN controls various effectivities of system configurations based on baselines and model information. WISEMAN has been used by ADD and Rotem Co. since developed.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.109-110
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• 2015

This paper presents a computational method that identifies an exact set of optimal overlap rates between critical activities to meet job site specific needs by using rework cost-slope. The procedures to compute the exact solution are provided in peudocode algorithm. The method is coded into Exact Concurrent Construction Scheduling system that allows practitioners to make more informed decision in accordance with the site-specific condition involved in the overlapping of critical activities. Test cases verify the validity of the computational method and the usability of the system.

• 대한안전경영과학회지
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• 제9권4호
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• pp.71-82
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• 2007

For a sustainable development, the resources circulation system should be established and an environment-conscious activities are required at the same time. These activities should be also implemented in logistics area. Especially, green procurement activities in inbound logistics is recognized as a very important factors in the early phase of an environment-conscious activities. In this paper, we are to suggest the direction through statistical analysis of effects, and cause of influences of environmental procurement logistics activities on logistics performance by environmental logistics strategy and by the size of enterprises, and by Environmental Management System. This study was conducted with the subjects of manufacturing enterprises with concurrent reviews of literature and statistical analysis, and the meaning of this study would be the analysis of the influencers of environment-conscious procurement logistics activities on logistics performance different from existing logistics studies.