• Advances in environmental research
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• 제7권1호
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• pp.1-11
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• 2018

Textile factories are one of the industries which its wastewater treatment is a challenging issue, especially in developing countries and a conventional treatment cannot treat all its pollutants properly. Using chemical coagulants is a technique for physical and chemical primary treatment of the wastewater. We applied jar test for selection of suitable coagulant among the five coagulants including alum, calcium hydroxide, ferrous sulfate, ferrous chloride and barium chloride for the effluent of wastewater in Mazandran textile factory located in Mazandran Province, Iran. In addition, jar test, we also used analytic hierarchy process (AHP) method considering criteria which included coagulation cost, sensitivity to pH change, the amount of sludge generation and side effects for coagulation. The results of the jar test indicated that calcium hydroxide was proper among the coagulants which it removed 92.9% total suspended solid (TSS), 70% dye and 30% chemical oxygen demand. The AHP analysis presented that calcium hydroxide is more suitable than other coagulants considering five criteria.

• 산경연구논집
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• 제10권12호
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• pp.7-14
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• 2019

Purpose: In Korea, win-win growth policy has been successfully implemented in supply chain and logistics management. In the policy, it is recommended to support supply chain partners with various mechanisms including financial and technical aids. This study attempts to scientifically analyze the effects of direct and indirect win-win growth policy factors on supply chain and logistics management performance through partnership factors. Research design, data and methodology: This study builds a structural equation model reflecting the relationship between the win-win growth policy, partnership and performance factors. The proposed model is verified with the PLS (Partial Least Squares regression) methodology. Data from shipper and logistics companies were collected and analyzed by the PLS model. Results: The analysis showed that both direct and indirect policy factors are meaningful to improve supply chain and logistics performance. Indirect support factors including R&D, management innovation, human resources development and educational supports have positive impacts on partnership factors. Direct support factors including financial aids and fairness also have positive impacts on the performance. Conclusions: This study is meaningful in that it suggests a turning point in which supply chain Win-win growth and partnership efforts are perceived as new value-creating mechanism rather than unilateral cost reduction for logistics industry.

• 한국멀티미디어학회논문지
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• 제7권4호
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• pp.542-549
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• 2004

전통적인 교육 환경이 지니고 있는 한계점들에 대한 대안으로써 사이버 교육은 학생과 교육기관 모두에 많은 이점을 주고 있다. 새로운 교육적 대안으로써 사이버 강좌가 성공적으로 운영되기 위하여 고려해야 할 중요한 요인들이 있다. 이 논문에서는 사이버 강좌 주요 구성 요소와 성공적인 사이버 강좌가 되기 위한 중요 요인을 분석하고자 한다. 파악된 사이버 강좌 주요 구성을 바탕으로 실제 사이버 강좌를 제작하였고, 제작된 사이버 강좌를 수강한 학생들의 관점을 설문 조사를 통하여 조사 분석하였다. 그 결과 학생들은 사이버 강좌를 4가지 관점으로 평가하고 있으며 이러한 관점에 대한 평가는 학기가 진행되는 동안 변한다는 것을 알았다. 또한 소속 단과 대학이나 학년에 따라 관점에 차이가 있는 것으로 판명되었다.

• Architectural research
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• 제19권3호
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• pp.71-77
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• 2017

Dynamic pricing refers to a system in which a tariff varies, according to a level of charging and applied time depending on time change. The power billing system used in the Korean Electric Power Corporation (KEPCO) is based on time of use (TOU) pricing, which is one of the dynamic pricing systems. This paper aimed to determine the operational results of a variable refrigerant flow system, to which a new control algorithm was applied, in order to respond to dynamic pricing, in summer and the utility of the new control. To do this, real measured data was acquired from a VRF system installed in a building for educational purposes, where dynamic pricing was applied for about 100 days during summer time. At the maximum load operation time period in TOU, the new control minimized operation within the indoor comfort range, an increase in refrigerant evaporation temperature in the indoor unit and the number of revolutions in a compressor in the outdoor unit was limited. As a result, power usage was decreased by 11%, and the operational cost by 14.6%. Furthermore, measurement results using the Predicted Mean Vote (PMV) model, that represented satisfaction of thermal environment, showed that 82.8% to 90.4% of the occupants of the building were satisfied during operation when the new control was applied.

• 정신신체의학
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• 제1권1호
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• pp.14-24
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• 1993

The author discussed present problems and future prospects of psychosomatic medicine in clinical, educational, research, and social aspects. In general, psychosomatic field. particularly. consultation-liaison(C-L) psychiatry in Korea seems to remain on early developmental phase. However, positive change in the general publics' and societal view of psychiatry, specialization of medicine and development of medical technology, implementation of delivery system in medical care could contribute to development of this field. In future, clinically, liaison activity will be more activated. and this field will be developed as main subspecialty of psychiatry. In addition. C-L psychiatry will be subspecialized. and prevention and humanization of medical care could be more emphasized. In education. the main place of education for medical students and psychiatric residents will be changed from closed ward to general ward in which consultation-liaison activity can be performed. In research. consultation liaison model suitable for Koreans will be developed and studies on disease mechanism will be more promoted. In social aspects, this field could influence the general publics' view of psychiatry and change the whole areas of medicine and society toward integration. In order to achieve these goals, medical insurance system and cost relevant to C-L activity should be essentially improved.

• 보건교육건강증진학회지
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• 제11권2호
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• pp.146-159
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• 1994

The conecpt of hospice care for the terminally ill is a development of relatively modern times, although it has its origins in antiquity. The hospice will be able to handle progressively more and more patient, to the limit of its resources. The purposes of this study were to review of demand and issues of the hospice care programes and to recommand the hospice care approaches in south Korea that using the book-review method. At this point, although at present there is a general unawareness of hospice throughout Korean society, the public will become gradually aware of hospice. This will thus aid the development of hospices. Awareness will come about because of the educational efforts of medical schools, nursing schools, allied health training programs, practicing hospice care giver, universities, and others interested in hospice education. At present, there are many issues of the hospice care program that are hospice resources problems of manpower, facilities, finances, and cost of hospice services, quality of care, and ethics. Additional studies are needed to determine the most efficacious organizational hospice models for varying conditions. They will insist upon reasonable regulatory agency regulations that will promote the hospice idea and. permit adequate remuneration for services provided. More research is needed on health professionals', patients', and others' attitudes towards death.

• 대한간호학회지
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• 제31권5호
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• pp.932-947
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• 2001

The purpose of this study was 1) analyze the current state of Sanhojoriwon; and 2) to suggest the new model for the community based mother infants health care delivery system: strategies of TMIC are related to Public Health policy, cost-effectiveness, mother infant care provision of medical professionalism, and so on. Method: Forty-seven workers from seventeen Sanhojoriwon participated to analyze several aspects of Sanhojoriwon. Using a questionnaire developed at Korean Sanhojori Research Forum (KSARF), such as the traditional and medical concept of the Sanhojori, postpartum care, Korean traditional postpartum care, job description on women and infant care at Sanhojoriwon, professional management, health care policy and the educational need. Results: Based on the descriptive study results, the TMIC, the community based transitional mother infants care center was suggested as a new model for the cyclic public health care system related on the reproductive health, using an already existing related center, Sanhojoriwon. Also, several strategies were presented on the TMIC.

• 대한예방한의학회지
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• 제15권3호
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• pp.115-125
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• 2011

Objectives : The aim of this study is to investigate the relevant factors which determine the use of oriental healthcare services among subjects with chronic illnesses. Method : This study utilized the data from the Korean National Health and Nutrition Examination Survey in 2005. Out of all the participants of the survey, 11,665 individuals who are older than 19 years old and have one or more chronic diseases were included in this study. Results : The factors that affect utilization of oriental healthcare services were significantly associated with gender, educational level, job, personal income, the number of chronic illnesses, experiences of nontreatment or delayed treatment and admission experiences for the last one year(p<.001). Although some of these factors need further studies, the determining factors for the use of oriental healthcare services are the presence of chronic illness and the number of chronic disease. That is, the chronically ill are more likely to seek oriental healthcare services. And the more chronic diseases the clients have the higher probability of seeking oriental healthcare services was found. Conclusions : The results suggest that the national integrated care services should be established for diverse development of policy regarding the quality of care of chronic illness and cost-effectiveness.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제14권5호
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• pp.2186-2203
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• 2020

Security administrators of companies and organizations need to come up with proper countermeasures against cyber-attacks considering infrastructures and security policies in their possession. In order to develop and verify such countermeasures, the administrators should be able to reenact both cyber-attacks and defenses. Simulations can be useful for the reenactment by overcoming its limitations including high risk and cost. If the administrators are able to design various scenarios of cyber-attacks and to develop simulation models from their viewpoints, they can simulate desired situations and observe the results more easily. It is challenging to simulate cyber-security issues, because there is lack of theoretical basis for modeling a wide range of the security field as well as pre-defined basic components used to model cyber-attacks. In this paper, we propose a modeling method for cyber-security simulations by developing a basic component and a composite model, called Abstracted Cyber-Security Unit Model (ACSUM) and Abstracted Cyber-security SIMulation model (ACSIM), respectively. The proposed models are based on DEVS(Discrete Event systems Specification) formalism, a modeling theory for discrete event simulations. We develop attack scenarios by sequencing attack behaviors using ACSUMs and then model ACSIMs by combining and abstracting the ACSUMs from a security perspective. The concepts of ACSUM and ACSIM enable the security administrators to simulate numerous cyber-security issues from their viewpoints. As a case study, we model a worm scenario using ACSUM and simulate three types of simulation models based on ACSIM from a different security perspective.

• 성인간호학회지
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• 제29권2호
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• pp.143-153
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• 2017

Purpose: Purpose of the study was to identify the effect of the Comprehensive Education Program (CEP) on intra-procedure anxiety, post-procedure uncertainty and athletic performance of back strengthening of patients undergo spinal nerve block (SNB). Methods: The participants (experimental group=33, control group=33) were recruited from a university hospital in G metropolitan city. Data were collected from July to November 2015. The experimental group was individually provided with a booklet/motion picture about the SNB and back strengthening exercise training before the SNB. This group also received a leaflet about back strengthening exercise post SNB. The Anxiety-Visual Analog Scale (A-VAS), the Mishel adapted uncertainty scale and newly created knowledge scale/athletic performance checklist were utilized as our study tools. Results: Intra-procedure anxiety score (F=25.70, p<.001), post-procedure uncertainty score (F=82.56, p<.001), post-procedure knowledge score (F=14.63, p<.001) and athletic performance rate of back strengthening (p=.003) of the experimental group showed statistically significant differences in comparison with the control group. Conclusion: This CEP is a cost and time-effective intervention for patients who undergo spinal injections, so it should be actively utilized as an educational management strategy in outpatient.