• Steel and Composite Structures
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• v.49 no.5
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• pp.517-532
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• 2023

Tower structures have been widely used in communication and transmission engineering. The failure of joints is the leading cause of structure failure, which make it play a crucial role in tower structure engineering. In this study, the aluminum alloy three tube tower structure is taken as the prototype, and the middle joint of the tower was selected as the research object. Three different stainless steel-aluminum alloy composite joints (SACJs), denoted by TA, TB and TC, were designed. Finite element (FE) modeling analysis was used to compare and determine the TC joint as the best solution. Detail requirements of fasteners in the TC stainless steel-aluminum alloy composite joint (TC-SACJ) were designed and verified. In order to systematically and comprehensively study the mechanical properties of TC-SACJ under multi-directional loading conditions, the full-scale experiments and FE simulation models were all performed for mechanical response analysis. The failure modes, load-carrying capacities, and axial load versus displacement/stain testing curves of all full-scale specimens under tension/compression loading conditions were obtained. The results show that the maximum vertical displacement of aluminum alloy tube is 26.9mm, and the maximum lateral displacement of TC-SACJs is 1.0 mm. In general, the TC-SACJs are in an elastic state under the design load, which meet the design requirements and has a good safety reserve. This work can provide references for the design and engineering application of aluminum alloy tower structures.

• The Korean Society of Law and Medicine
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• v.24 no.3
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• pp.27-55
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• 2023

The term "Collaborative medical care" commonly used in South Korea refers to the case where doctors from different medical departments work together to treat a patient within the same medical institution. Therefore, "Collaborative medical care" represents the aspect of a medical team where various medical professionals collaborate based on their expertise to treat patients. Additionally, doctors from different specialties within the medical team engage in horizontal division of labor at an equal status, distributing legal responsibilities according to the principles of division of labor. The Supreme Court also acknowledges cases where multiple doctors collectively provide medical treatment through division of labor or collaboration and states that the doctor who initially attended to the patient must accurately inform the subsequent attending doctor about the patient's condition to enable appropriate measures. In medical institutions with multiple specialties, when doctors from different specialties collaborate to provide medical treatment, the doctor who attended to the patient initially must decide whether collaboration is necessary based on the patient's condition. Subsequently, they must inform the doctor from the relevant specialty about the patient's condition accurately to facilitate appropriate actions. The successor doctor who participates in collaborative medical care must actively communicate relevant treatment information related to the patient's condition with the predecessor doctor who requested collaboration, exchange opinions, and do so until the patient's treatment concludes. However, the determination of the necessity of collaborative medical care should be based on the patient's condition at the time, and it cannot be asserted that collaborative medical care is mandatory in all cases. Whether there is negligence in the decision about the necessity of collaboration will be assessed based on the legal principles of a doctor's duty of medical care.

• Archives of design research
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• v.14
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• pp.141-150
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• 1996

In recent years space planning for modern city has been accomplished through scientific high technique and computer supported collaborative work. Relatively human being is treated as a component of the space or whole building and according to the social structure people tend to prefer private space. The necessity of the open space as an active place is emphasized now because the interaction created between users of the space and the nature, surrounding environment can influence on improving quality of outdoor life and giving the place specific identity. In this paper three ways of analyses of components which compose the open space are studied. Especially through the process of analyses derived from differenet areas, the necessity of communication model in collaborative work is proposed.

• Asia pacific journal of information systems
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• v.6 no.2
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• pp.149-169
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• 1996

The Objective of this study is empirically investigating organizational/managerial factors affecting BPR implementation. The contributions of this research project are two-fold. First, this research project provides empirically tested CSFs and CFF of BPR implementation. Especially, the influence of the organizational culture, structure, and managerial support on BPR implementation were thoroughly investigated. Second, this research found the combined effects of CSF and CFF. Top management commitment, leadership style, and collaborative work environment were found to negate employee resistance to a reengineered process and lead to a successful BPR implementation, especially when the level of employee resistance is high.

• Electrical & Electronic Materials
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• v.11 no.10
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• pp.40-45
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• 1998

This paper describes a collaborative work between SEI and KEPCO on the Superconducting Magnetic Energy Storage system (SMES). We have studied two types of magnets. One is the 400kJ class LTS-SMES for testing the power stabilization operated at liquid helium temperature (4.2K) and the other is the 100J class HTS-SMES for confirming the possibility of applying HTS wire to SMES at liquid nitrogen temperature (77k). In this paper, the design of the magnet and the test results are described. Each magnet performed completely at rated operation.

• Proceedings of the Korean Information Science Society Conference
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• 2001.04b
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• pp.442-444
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• 2001

공동작어에 참여 중인 작업자들은 공동작업 공간의 공유윈도우에서 텔리포인팅을 통해 공유객체를 추가, 변경 그리고 삭제하는 등의 작업을 행할 수 있다. 이대 작업자들은 공유객체에 대한 권한이 있어야 하면 텔리포인팅 시에 작업자의 공유객체엑세스 권한이 텔리포인터에 적용되어야 올바른 공동작업을 행할 수 있다. 본 논문은 텔리포인팅에 작업자의 공유객체액세스 권한을 적용하기 위한 텔리포인팅 모듈을 설계한다. 설계한 텔리포이팅 모듈은 기 연구된 RTP기반의 텔리포인팅 모듈에 공유객체액세스 권한관리모듈이 추가 확장된 구조이다.

• Proceedings of the PSK Conference
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• 2003.10a
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• pp.58-59
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• 2003

There is considerable interest in the screening of higher plant extracts in modem drug discovery programs to discover new chemotypes with potent and selective biological activity. Such work may be performed in different laboratory settings, including those in academic institutions. In the case of cancer, plants offer the potential for the discovery of both cancer chemotherapeutic agents and cancer chemopreventives. (omitted)

• Annual Conference of KIPS
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• 2008.11a
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• pp.566-569
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• 2008

본 논문은 워크스페이스(workspace) 기반의 협업개발 시스템과 소프트웨어 형상관리(Software Configuration Management, SCM) 시스템의 통합에 관하여 논한다. 협업개발 시스템은 개발 구성원들 간의 유기적인 의사소통 및 산출물에 대한 버전관리 기능 등을 제공한다. 여기에 프로젝트 및 액티비티를 중심으로 소프트웨어 개발 프로세스 전반에 걸친 문서의 체계적인 관리에 중점을 둔 형상관리 시스템을 결합하여 조직 내 협업 개발과 체계적인 형상관리를 수행할 수 있도록 하였다.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.23 no.4
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• pp.189-196
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• 2023

As the manufacturing paradigm shifts, various collaborative robots are creating new markets. Demand for collaborative robots is increasing in all industries for the purpose of easy operation, productivity improvement, and replacement of manpower who do simple tasks compared to existing industrial robots. However, accidents frequently occur during work caused by collaborative robots in industrial sites, threatening the safety of workers. In order to construct an industrial site through robots in a human-centered environment, the safety of workers must be guaranteed, and there is a need to develop a collaborative robot guard system that provides reliable communication without the possibility of dispatch. It is necessary to double prevent accidents that occur within the working radius of cobots and reduce the risk of safety accidents through sensors and computer vision. We build a system based on OPC UA, an international protocol for communication with various industrial equipment, and propose a collaborative robot guard system through image analysis using ultrasonic sensors and CNN (Convolution Neural Network). The proposed system evaluates the possibility of robot control in an unsafe situation for a worker.

• Animal Bioscience
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• v.35 no.10
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• pp.1616-1627
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• 2022

Objective: This work was conducted to investigate the effects of oxidative stress on meat quality, mitochondrial function, calcium metabolism and ferroptosis of broilers. Methods: In this study, a total of 144 one-day-old male Ross 308 chicks were divided into 3 groups (control group, saline group, and hydrogen peroxide [H₂O₂] group) with 6 replicates of 8 broilers each. The study lasted for 42 d. The broilers in the saline and H₂O₂ groups were intraperitoneally injected with 0.75% saline and 10.0% H₂O₂ on the 16th and 37th day of the experimental period respectively, the injection volumes were 1.0 mL/kg of broiler body weight. On the 42nd day of the experimental period, two chicks were randomly selected from each cage, a total of thirty-six chicks were stunned by electric shock and slaughtered to collect breast muscle samples. Results: The H₂O₂ exposure reduced pH value, increased drip loss and shear force of breast meat (p<0.05), impaired the ultrastructure and function of mitochondria. The H₂O₂ exposure damaged the antioxidant system in mitochondria, excessive reactive oxygen species carbonylation modified calcium channels on mitochondria, which impaired the activities of key enzymes on calcium channel, resulted in the increased calcium concentration in cytoplasm and mitochondria (p<0.05). In addition, the H₂O₂ exposure increased the iron content and lipid peroxidation (p<0.05), which induced ferroptosis. Conclusion: Oxidative stress could impair meat quality by causing mitochondrial dysfunction, resulting in calcium metabolism disorder and ferroptosis.