• 한국융합학회논문지
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• 제13권2호
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• pp.263-272
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• 2022

본 연구는 항공사 승무원의 고용불안이 심리적계약위반과 직무에 어떠한 영향을 미치는지 파악하기 위하여 가설을 설정하였다. 항공사 승무원이 느끼는 고용불안을 감소시키는데 유의미한 시사점을 제공하고자하였으며, 심리적계약위반을 완화시킬 수 있는 방안을 검토하여 항공사의 인적자원관리에 이론적 실무적 시사점을 제공하고자 하였다. 실증분석결과는 아래와 같다. 먼저 "항공사승무원이 지각하는 고용불안정은 거래 심리적 계약위반에 정의 영향을 미칠 것이다"는 가설 1-1은 채택되었다. 둘째, "항공사승무원이 지각하는 고용불안정은 관계 심리적 계약위반에 정의 영향을 미칠 것이다" 는 가설 1-2는 채택되었다. 셋째, "항공사승무원이 지각하는 거래 심리적 계약위반은 직무만족에 부의 영향을 미칠 것이다" 는 H 2-1는 채택되었다. 반면 충분한 교육훈련이나 경력계발기회 등의 관계 심리적 계약위반을 높게 지각할수록 직무만족에는 영향을 미치지 않는 것으로 나타나 가설 2-2는 기각 되었다. 마지막으로 "항공사승무원이 지각하는 고용불안정은 직무만족에 부의 영향을 미칠 것이다"는 가설 3은 채택되었다. 즉 위협적인 상황으로 인해 자신의 직무가 없어질 지도 모른다는 무력감을 느낄수록 직무만족은 저하되는 것으로 나타났다.

• 대한안전경영과학회지
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• 제12권1호
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• pp.161-168
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• 2010

This paper presents a six sigma project for improving customer satisfaction of a franchise store. The project follows a disciplined process of five macro phase : define, measure, analyze, improve, and control(DMAIC). Due to the limitation of existing methodologies, numerous difficulties arise during the six sigma application to transactional processes. This paper expected to be helpful to service industry in which is very difficult to measure and implement.

• 산업공학
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• 제21권3호
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• pp.343-353
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• 2008

Vendor-managed inventory(VMI) is a supply chain strategy to improve the inventory turnover and customer service in supply chain management. Unfortunately, many VMI programs fail because they simply transfer the transactional aspects of placing replenishment orders from customer to vendor. In fact, such VMI programs often degrade supply chain performance because vendors lack capability to plan the VMI operations effectively in an integrated way under the dynamic, complex, and stochastic VMI supply chain environment. This paper presents a decision support system, termed DSSV, for VMI in the retail supply chain. DSSV supports the market forecasting, vendor's production planning, retailer's inventory replenishment planning, vehicle routing, determination of the system operating parameter values, retailer's purchase price decision, and what-if analysis. The potential benefits of DSSV include the provision of guidance, solution, and simulation environment for enterprises to reduce risks for their VMI supply chain operations.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제6권9호
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• pp.2191-2201
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• 2012

Traffic classification seeks to assign packet flows to an appropriate quality of service (QoS) class based on flow statistics without the need to examine packet payloads. Classification proceeds in two steps. Classification rules are first built by analyzing traffic traces, and then the classification rules are evaluated using test data. In this paper, we use self-organizing map and K-means clustering as unsupervised machine learning methods to identify the inherent classes in traffic traces. Three clusters were discovered, corresponding to transactional, bulk data transfer, and interactive applications. The K-nearest neighbor classifier was found to be highly accurate for the traffic data and significantly better compared to a minimum mean distance classifier.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제3권2호
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• pp.134-146
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• 2009

Traffic classification seeks to assign packet flows to an appropriate quality of service(QoS) class based on flow statistics without the need to examine packet payloads. Classification proceeds in two steps. Classification rules are first built by analyzing traffic traces, and then the classification rules are evaluated using test data. In this paper, we use self-organizing map and K-means clustering as unsupervised machine learning methods to identify the inherent classes in traffic traces. Three clusters were discovered, corresponding to transactional, bulk data transfer, and interactive applications. The K-nearest neighbor classifier was found to be highly accurate for the traffic data and significantly better compared to a minimum mean distance classifier.

• 이베로아메리카
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• 제22권1호
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• pp.111-148
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• 2020

One way for phatic communication to be linguistically realized involves ritual activities, such as greetings and leave-takings. These conventionalized acts in medical contexts can significantly influence both transactional and interpersonal goals. The analysis in this paper confirms that exchanging rituals such as greeting and leave-taking between doctors and patients is not a simple exchange of conventionalized linguistic symbols. In addition, the use of discursive strategies means that to determine whether an expression is phatic or not, it is necessary to analyze it from the multidimensional perspective. The phaticity is established based on the negotiation between the participants during the interaction. We have found that the interrogative form of greeting like "¿Qué tal?" (How are you?) becomes a versatile resource in the medical context. Thus, professionals need to be attentive to the discourse progress, because the phaticity of the interrogative greetings (illocutionary force) is linked, in the vast majority, with the reaction of the patients. Also, the data confirms that when participants coordinate closings, the exchange of turns lengthens and the intervention of various discursive strategies for phatic communion becomes more prominent.

• 한국식품조리과학회지
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• 제22권2호
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• pp.250-257
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• 2006

Foodservice industry and distribution business could make mutual prpgress when they join forces in responding to environmental uncertainty in an efficient manner. The purpose of this study was to examine the relational characteristics of domestic food service businesses and distribution firms in conjunction with the distribution channels and ensuing conflicts between them, to present possible alternatives on and how they should communicate with each other to achieve a satisfactory result. The relational characteristics and ensuing conflicts of food service businesses and distribution firms appeared to be significantly characterized by incongruities of target, role and perception. The types of relational characteristics that were triggered by the disagreement of roles and perception combined to decrease the intensity of the relational commitment. A satisfactory transactional relationship served to ease their conflicts caused by perceptual disagreement, and the soos of conflicts that were rooted in the discord of roles and of perception that increased the degree of relational commitment. As for relational performance, relational commitment, satisfaction with distribution channel and satisfaction with suppliers allowed them to maintain their relationship on a long-term basis.

• International Journal of Computer Science & Network Security
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• 제24권3호
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• pp.1-11
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• 2024

Payment systems are evolving, and this study examines how blockchain and AI improve online transactional security and service quality. The study examines micro and macro payment systems, compares online, and offline methods all over the world. The study also examines how blockchain and AI affect payment system security, privacy, and efficiency globally and rapidly digitizing economy. Digital payment methods are growing all over the world with high literacy and digital engagement, but they face challenges. The research highlights cybersecurity threats and the need to balance user convenience and security. It suggests blockchain and AI improve online payment services, supporting the policies for different countries. In this extensive research survey, we compare and evaluate the strengths and weaknesses of various payment systems, their practicality, and their robustness. This study also examines how technological innovations and payment systems interact to reveal how blockchain and AI could transform the financial sector. It seeks to understand how technology-enhancing service quality can boost customer satisfaction and financial stability in the digital age. The findings should help policymakers, financial institutions, and technology developers optimize online payment systems for a more secure and efficient digital economy.

• 정보학연구
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• 제5권3호
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• pp.97-119
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• 2002

각 은행들은 인터넷 뱅킹을 통해 경쟁력 확보하기 위해 서비스 개발에 박차를 가하고 있을 뿐만 아니라, 새로운 뱅킹 비즈니스 모델을 구현하고 있다. 특히 인터넷 뱅킹 경쟁력 평가는 단순히 인터넷 뱅킹 사이트의 서비스 평가와는 다르다. 국내외 인터넷 뱅킹에서 제공하는 서비스 상품들은 성공적인 합병과 다양한 온라인 접점의 구축을 통해 금융서비스를 가장 효율적으로 제공하며, 또한 은행업무뿐만 아니라 증권서비스, 보험, 소비자금융, 리스, 부동산업무 등을 원스톱으로 제공하는 등 다양한 서비스를 제공하며, 사업의 영역을 넓혀가고 있다. 그리고 대부분의 국내외 은행 및 금융기관들이 인터넷 뱅킹 서비스 개발을 통하여 경영효율성을 증대시키고 경쟁력을 제고하고자 노력하고 있다. 특히 국내외 은행들이 일대일 맞춤 서비스, 개인 재무관리 그리고 인터넷뱅킹을 이용한 아파트관리비 납부서비스 상품을 개발하여 제공하고 있을 뿐만 아니라, 통합모바일서비스, 세금 전자납부 징수, 인터넷 무서류 대출 상품 서비스를 개발하여 시장에서 판매하고 있다. 따라서 현재의 고객 및 잠재고객들이 은행의 인터넷 뱅킹 서비스를 적극 이용하도록 유치함으로써 은행 및 금융기관들은 그들의 경쟁적위상을 제고시키고자 노력하고 있다.

• Asia pacific journal of information systems
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• 제12권1호
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• pp.139-158
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• 2002

As the telecommunication market becomes mature in Korea, severe competition has already begun on the market. While service providers struggled for the last couple of years to acquire as many new customers as possible, nowadays they are making more efforts on retaining the current customers. The churn management by analyzing customers' demographic and transactional data becomes one of the key customer retention strategies which most companies pursue. However, the customer data analysis has still remained at the basic level in the industry, even though it has considerable potential as a tool for understanding customer behavior. This paper develops several churn prediction models using data mining techniques such as logistic regression, decision trees, and neural networks. For model-building, real data were used which were collected from one of the major telecommunication companies in Korea. This paper explores various ways of comparing model performance, while the hit ratio was mainly focused in the previous research. The comparison criteria used in this study include gain ratio, Kolmogorov-Smirnov statistics, distribution of the predicted values, and explanation ability. This paper also suggest some guidance for model selection in applying data mining techniques.