• Journal of the Korea Safety Management & Science
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• v.13 no.4
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• pp.125-137
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• 2011

Customers are generally requiring a variety of products, earlier due date, and lower price. A manufacturing process needs the efficient scheduling to meet those customer's requirements. This study proposes the novel algorithm named MJA(Minimum Job completion time and AGV time) that increases the performance of machines and AGV(Automated Guided Vehicles) in many kinds of job types. MJA optimizes the bottleneck of machines and efficiency of AGV with considering two types of dispatching at the same time. Suggested algorithm was compared with existing heuristic methods by several simulations, it performed better for reducing the time of tardiness.

• Journal of Applied Tourism Food and Beverage Management and Research
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• v.15 no.2
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• pp.73-98
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• 2004

For the successful hotel restaurant, careful research on the customers needs, their changes and the understanding should be on the first step. The aim of this study is to find out hotel restaurant user's satisfaction factors and provide useful information for the decision of its marketing policy. Questionnaire survey, after the preliminary survey, had been performed from 23 Sep 2002 to 02 Oct 2002, for 10 days. 240 questionnaires had been collected and 25 excepted which filled out not properly. 215(86%) questionnaires are included for the analysis. For the enhancement of hotel restaurant customers' satisfaction degree, following suggestions are recommended. The development of distinct hotel service is needed. Also the effort for making hotel buffet restaurant not only for dining place but also customers oriented facilities, with various events and shows, is required. Periodical checking on the food quality, presenting new menu to the customers and keeping consistent food taste and quality areneeded. The studies on the diverse ways for specified and new customers, such as advertisement, promotion, easy access to the hotel restaurant, discount coupon and customer smilage service are needed.

• Culinary science and hospitality research
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• v.10 no.1
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• pp.116-127
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• 2004

In rapidly changing environments of Foodservice Industry, it would be leading companies have made constant efforts to establish efficient management through active involvement in management accounting. Especially the foodservice business in Korea needs more critical managerial environment to grow and develope as a going business, these management environment is changed according to deepening of the competition between foodservice companies and customer's wants. In order to succeed in this change of management environment, a new managerial policy is required which the economic environment, estimates the level and the direction of change and makes efficient use of various resources through internal control.

• Transactions of the Korean Society of Machine Tool Engineers
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• v.17 no.4
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• pp.35-41
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• 2008

R/In order to satisfy the customer's variant needs for a product quality in recent years, a demand for developing higher precision machining technologies in a lot of application areas such as automobile, cellular phone and semiconductor has been increased more and more. Magnetic abrasive polishing(MAP) process is one of these precision technologies. In this study, to verify the parameters' effect of the MAP process on the surface roughness improvement of the plane and the inclined workpiece, well planned experiments which was called the design of experiments were carried out. Considered polishing factors were spindle speed, supplied current, abrasive type and working gap between the workpiece and the solid tool. As a result, it was seen that the supplied current and the working gap greatly affected the surface roughness improvement.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.22 no.53
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• pp.23-35
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• 1999

Since on-time delivery is becoming increasingly important in today's competitive markets, the development of effective scheduling methodologies to meet customer needs through on time delivery is of vital importance for the well-being of companies. The objective of this study is to develope a general heuristic algorithm for scheduling both the static and dynamic problems under certain on-time delivery criteria. For the problems with due-date related, we present insights for minimizing the number of tardy jobs and propose a heuristic scheduling algorithm. Experimental results show that the proposed algorithm performs significantly better than other dispatching rules within reasonable computation time, specially in the environment of strong competition for resources.

• Journal of the Korea society of information convergence
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• v.8 no.1
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• pp.1-11
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• 2015

Today in modern Marketing CRM and environment of Marketing of Marketing need a various strategy. Modern Marketing needs more than merchandise and service to survive. The understanding of market's trend is the most important thing in various environments. The flow of market is to make the reliable relationships between comsumer and CRM then Marketing is creating the value of the customer. According this study gives a basic establishment of marketing strategy about various customership and makes use of analytic data.

• 유체기계공업학회:학술대회논문집
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• 2003.12a
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• pp.489-495
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• 2003

A high performance and low noise refrigerator fan has been developed in order to satisfy the customer's high quality needs, that is, luxury, big size and low noise. In this study, the characteristics of a new developed fan and a current fan was calculated and compared by using numerical simulation. Rotation of a fan makes cold air circulation inside a refrigerator. A numerical simulation of air flow shows distribution and local flow regime of a cold air flow circulation, and revealed a cause of low noise as well. Optimization of a duct shape also decreased noise level.

• Transactions of the Korean Society of Automotive Engineers
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• v.12 no.1
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• pp.153-161
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• 2004

A vehicle fuel economy is one of the most important issues in view of environmental regulation and customer's needs. In order to improve the vehicle fuel economy, great efforts has been carried out on the components bases. However, systematic analysis of vehicle fuel consumption is necessary for the further improvement of vehicle fuel economy. In this paper, a methodology for the breakdown of vehicle fuel consumption was studied and proposed for systematic analysis of the vehicle fuel economy. The energy equation for the vehicle power train was set up for the analysis of the vehicle fuel economy and simplified to be calculated or estimated using the measured data in a vehicle. The amount of fuel that was used in vehicle components under arbitrary driving conditions was quantified.

• Proceedings of the KIEE Conference
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• 2007.07a
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• pp.723-724
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• 2007

Live line work is well known for mending and maintenance of electrical power equipment. Nowadays needs of electric power supply quality require live line work In Korea, live line work is needed since 765kV transmission operation and restructure of electric power industry has changed. In other words, in case of suspension of power supply on the transmission is getting hard to keep up with efficiency of transmission operation, customer's confidence and generation-limited cost. Therefore live line work is very meaningful. As the condition of 765kV Transmission both bare hand and Helicopter live line technique must be used in moderation because of economic, geographical, environmental circumstances around steel tower.

• Journal of Navigation and Port Research
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• v.32 no.2
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• pp.141-148
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• 2008

This paper is structured into three main parts and a conclusion. The main section provide definitions of efficiency, effectiveness and performance in terms of the distribution channel, followed by a review of related performance measurement, before discussing difficulties of measurement. According to the theoretical approach, it appears that key theroretical issues are centered around customer service, logistics excellence, time compression, the use of IT, and a move towards integrated logistics. The empirical approach shows that in the past, various financial performance indicators were regarded as relevant management information. However, today, management needs additional performance indicators. Therefore, external assessments of effectiveness must be performed to measure customers' satisfaction with the physical flow of product through the distribution channel network. So, what is needed is to take previous normative and explorative research and progress through a framework by developing valid measures of distribution channel's effectiveness and efficiency, and identifying research methodologies suited to the data collection requirements.