• 경영과학
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• 제20권1호
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• pp.125-139
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• 2003

City gas is becoming an essential resource in households due to its convenience and low price in comparison to other energy sources. However, in order to prepare for the gas market to be saturated, many city gas companies must pursue customer satisfaction management and develop happy call systems for a promising solution. In the development of the happy call systems, the difficult problem is that we cannot contact all customers because of limited resources and calling efficiency in the call center, We should find best customers according to their value. This paper suggests a methodology for the selection of happy call customers when city 9as companies consider two strategies. First, they should launch a new business area. Second, they must attempt to prevent current customers from moving from city gas to other fuels. We will discover important attributes and derive rules of weighting for the attributes through an exploration study that affect customer satisfaction and preference. Through a simulation model, we will show how many customers will be selected by our methodology.

• 대전발전포럼
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• 통권32호
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• pp.122-122
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• 2010

• 산업경영시스템학회지
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• 제22권50호
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• pp.293-302
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• 1999

This paper presents an efficient reengineering technique for the logistics process innovation which is the foundation of supply-chain management. Based on consulting experience on the domestic manufacturing firms, this paper provides promotion step for logistics innovation and six reengineering points including check system for customer's credit limit, check system of real-time inventory information, automatic system for sequential production plan, automatic order-release system, automatic packing system, and happy-call system for order-forward information. For each reengineering point, application cases in domestic industry are also presented.

• 도시과학
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• 제7권2호
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• pp.1-9
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• 2018

In this study, Analysis of DRT model and contribustion based on the case of local governments adopting the Demand Responsive Transit(DRT) in order to provide transportation in public transportation service weak area. Based on the case of Yeoju Area, the contribution of the DRT was analyzed. The DRT model was established as a fixed and call type model with taxi and bus transportation. Based on the results of the happy taxi service in Yeoju Area in 2016, the contribution of DRT was analyzed. According to the happy taxi performance of Yeoju city, it was introduced to 27 villages, and operated 4,188 times. And 9,111 people used it and Yeoju Area supported about 53 million Won. The contribution of local governments was analyzed in terms of local government, users, and social aspects. On local government aspects, we analyzed the budget cuts and complaints resolution. On the user aspects, we analyzed waiting time reduction, walking time reduction, travel time reduction, comfort, punctuality, and stability. On social aspects, we analyzed taxi and regional economy activation, and convenience of mobility.

• 대한수의학회지
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• 제48권3호
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• pp.323-326
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• 2008

A two-year-old mixed breed sow was requested to the Veterinary Pathology Laboratory of Cheju National University with a clinical signs of severe abdominal pain and sudden death. Grossly, there was severe hemorrhage in abdominal cavity. Most of internal parenchymas and subcutaneous muscle showed severe pale discoloration. Both ovaries were enlarged with oval to round protruding multilobular masses and dark red in color. And they were firm and contained multiple small cysts in their cut surface. Histopathologically, numerous neoplastic granulosa cells had spherical-to-oval, hyperchromatic nuclei and scant eosinophilic cytoplasms were distributed with follicular pattern in ovarian masses. And the typical Call-Exner bodies, distinctive microcavityies, were observed in the center of small neoplastic follicles. Based on the gross and histopathologic findings, this case was diagnosed as granulosa cell tumor. In our best knowledge, this is believed to be the first report of granulosa cell tumor in a sow in Korea.

• 산업공학
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• 제15권2호
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• pp.172-181
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• 2002

Customer satisfaction is undoubtedly one of the top strategic issues in the new decade. Today, many organizations are rushing to become more customer focused. A key component of many initiatives is the implementation of customer satisfaction software. In this paper, we provide a case study for customer satisfaction management in a city gas company. The three issues include the plan for giving premiums and the development of a happycall system and a web-based measurement system for customer satisfaction.

• 대한전자공학회논문지SP
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• 제45권4호
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• pp.107-114
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• 2008

본 논문은 남/여 성별에 기반해 음성을 평상, 기쁨, 슬픔, 화남의 4가지 감성 상태로 분류하는 감성인식 시스템을 구축하였다. 제안된 시스템은 입력 음성으로부터 1차적으로 남/여 성별을 분류하고, 분류된 성별을 기반으로 남/여 각기 최적의 특징벡터 열을 적용하여 감성인식을 수행함으로써 감성인식 성공률을 향상시켰다. 또한 음성인식에서 주로 사용되는 ZCPA(Zero Crossings with Peak Amplitudes)를 감성인식용 특징벡터로 사용하여 성능을 향상시켰으며, 남/여 각각의 특징 벡터 열을 최적화하기 위해 SFS(Sequential Forward Selection) 기법을 사용하였다. 감성 패턴 분류기로는 k-NN과 SVM을 비교하여 실험하였다. 실험결과 제안 시스템은 4가지 감성상태에 대해 약 85.3%의 높은 감성 인식 성공률을 달성할 수 있어 향후 감성을 인식하는 콜센터, 휴머노이드형 로봇이나 유비쿼터스(Ubiquitous) 환경 등 다양한 분야에서 감성인식 정보를 유용하게 사용될 수 있을 것으로 기대된다.

• 호스피스학술지
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• 제5권1호
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• pp.33-41
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• 2005

Purpose: The purpose of this study was to identify the effects of education of hospice for nurses on concern and coping about death and dying. Methods: The subjects of this study were 33 Korean nurses who participated in the education of hospice which consisted of lectures and practices for 5 months. Data were collected using questionnaire of concern and coping about Death and Dying. Data were analyzed with the mean, SDs and Wilcoxen test. Results: The mean score of concern about death and dying was 7.03. The highest items of concern about death and dying were 'thoughts of physical pain and being, 'thoughts of suffocating and choking, 'fear of darkness', The lowest items of concern about death and dying were. 'thoughts of burglars invading my possessions', 'rejection by God', thoughts of no one attending funeral', 'thoughts of no one paying respect or tribute', The mean score of coping about death and dying was 11.37. The highest items of coping about death and dying were 'call family member(s) into room and ask them ti sit close by, reminisce on happy events of the past, tell myself that there is nothing to be afraid of, look at family picture albums'. The lowest items of coping about death and dying were 'stay up stay up late till ready to fall asleep', 'look at family heirlooms', 'phone a prayer line', 'ask for a snack or something to drink'. In concern and coping about death and dying, significant differences were not found between pre and post test. But there was a tendency to decrease concern and increase coping about death and dying after education of hospice. Conclusion: According to these results, it is needed for nurses not only to do research for concern and coping about death and dying but also to develop an education program.

• 한국항공운항학회지
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• 제15권1호
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• pp.38-53
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• 2007

In a seminal judgment of November 2002 (Case C-476/98) relating to the compatibility with Community laws of the 'nationality clause' in the 1996 amending protocol to the 1955 U.S.-German Air Services Agreement, the European Court of Justice(ECJ) decided that the provision constituted a measure of an intrinsically discriminatory nature and was thus contrary to the principle of national treatment established under Art. 52 of the EC Treaty. The Court, rejecting bluntly the German government' submissions relying on public policy grounds(Art. 56, EC Treaty), seemed content to declare and rule that the protocol provision requiring a contracting state party to ensure substantial ownership and effective control by its nationals of its designated airlines had violated the requirement of national treatment reserved for other Community Members under the salient Treaty provision. The German counterclaims against the Commission, although tantalizing not only from the perusal of the judgment but from the perspective of international air law, were nonetheless invariably correct and to the point. For such a clause has been justified to defend the 'fundamental interests of society from a serious threat' that may result from granting operating licenses or necessary technical authorizations to an airline company of a third country. Indeed, the nationality clause has been inserted in most of the liberal bilaterals to allow the parties to enforce their own national laws and regulations governing aviation safety and security. Such a clause is not targeted as a device for discriminating against the nationals of any third State. It simply acts as the minimum legal safeguards against aviation risk empowering a party to take legal control of the designated airlines. Unfortunately, the German call for the review of such a foremost objective and rationale underlying the nationality clause landed on the deaf ears of the Court which appeared quite happy not to take stock of the potential implications and consequences in its absence and of the legality under international law of the 'national treatment' requirement of Community laws. Again, while US law limits foreign shareholders to 24.9% of its airlines, the European Community limits non-EC ownership to 49%, precluding any ownership and effective control by foreign nationals of EC airlines, let alone any foreign takeover and merger. Given this, it appears inconsistent and unreasonable for the EC to demand, $vis-{\grave{a}}-vis$ a non-EC third State, national treatment for all of its Member States. The ECJ's decision was also wrongly premised on the precedence of Community laws over international law, and in particular, international air law. It simply is another form of asserting and enforcing de facto extraterritorial application of Community laws to a non-EC third country. Again, the ruling runs counter to an established rule of international law that a treaty does not, as a matter of principle, create either obligations or rights for a third State. Aside from the legal problems, the 'national treatment' may not be economically justified either, in light of the free-rider problem and resulting externalities or inefficiency. On the strength of international law and economics, therefore, airlines of Community Members other than the designated German and U.S. air carriers are neither eligible for traffic rights, nor entitled to operate between or 'free-ride' on the U.S. and German points. All in all and in all fairness, the European Court's ruling was nothing short of an outright condemnation of established rules and principles of international law and international air law. Nor is the national treatment requirement justified by the economic logic of deregulation or liberalization of aviation markets. Nor has the requirement much to do with fair competition and increased efficiency.