• 제어로봇시스템학회:학술대회논문집
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• 2004.08a
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• pp.722-725
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• 2004

In most manufacturing systems, all customers are expected to take deliveries from inventory. However, in some situations, management may keep inventory only for some customers and not keep inventory for the others. The reason is that they would like to make as much benefit as possible from the first group of customers and this may help sell these customers on further products. This paper attempts to determine the cutoff between the group of customers who are given products immediately when their orders come and other customers who will be served but have to wait for the production of their products. The optimum set of customers to be served immediately and the optimum set of customers who have to wait for the production are found using linear programming to optimize perceived manufacturer benefits measured as the product of the benefit factor and the corresponding profit per customer. The results indicate that it is not necessarily wise to keep inventory for all customers.

• The Transactions of the Korean Institute of Electrical Engineers P
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• v.58 no.1
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• pp.48-55
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• 2009

In order to keep safe driving conditions under road networks, there are several formations such as road structure, road surface condition, traffic occupancy and supplement of an accurate information of traffic status ahead To support safe-driving on each road formation, each formation is supplied with various information to help the driver. However, in some cases like rapid status change at local-scale geography, traffic information systems often displays insufficient information because of the lack of information correlation. In order to accurately aware the driver, all road formation must be in sync. It is important to supply accurate information to the driver because this information directly impacts the drivers on the road. This paper discusses the amber information to keep the least safety driving over road formations including tunnels and bridges. This paper also will propose the informations for safe-driving conditions, information linkage on the road and rule-base safety information, as ITS technology, being displayed for all drivers under the worst weather conditions.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.12 no.2
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• pp.55-63
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• 2017

Crowdfunding recently receives a great deal of attentions as an alternative finance for small and medium-sized enterprises or business ventures that suffer from financial constraints. Crowdfunding is a new form of platform that enables a large number of people to invest a small amount of money for promising new business items directly. We analyzed the effect of type, period, method of projects on crowdfunding outcomes. We measure the outcome in terms of the ratio of the collected to the target amount. We collected data from three Korean crowdfunding platform companies, and the data consisted of 239 projects from 2012 to 2014. We use both logit and ordinary least square method for evaluation. Generally, the amount of target itself has no effect on the outcome. Equity crowdfunding shows higher success rate and better outcome than rewards crowdfunding. All or Nothing method leads to the higher ratio of the collected to the target amount than Keep It All. There is an inverted U-shape between the number of investors and the ratio of the collected to the target amount. Finally, the ratio of the collected to the target amount is decreasing in a crowdfunding period.

• Journal of Korean society of Dental Hygiene
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• v.8 no.3
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• pp.85-98
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• 2008

This study is to enforce to ready basic data of effective dental education program and no smoking and no drinking program for high school students who do smoking and drinking, executed investigation by own recording way using smoking and questionnaire consisted of actual conditions and caries prevention awareness and dental health knowledge degree of drinking to some man high school. Analyzes result that total 487 people respond in SPSS WIN 13.0 programs and got following sequence. Result of this study is as following. 1. Mans high school students had more students who do not than a drinking student and main current received most soju. Third-year student appeared by thing which receive a lot of soju than 1 or 2 class student but different other difference was not seen by class. 2. Mans high school students had more students who do not than a smoking student and a student who smoke more than 3 years was the most. I can know was old since third-year student smokes than 1 or 2 class student. 3. It was not difference that keep in mind by drinking, smoking availability although there were many students who recognize that all of the on-time dental medical examination, sugar intake limitation, fluorine inclusion toothpaste, teeth fluorine application are seldom effective on caries prevention. 4. Recognized that right brushing is effective relatively on caries prevention. I was shown difference that recognized that righter brushing is effective on bad tooth courtesy call than a student who a student who do not smoke does, and keeps in mind according to smoking availability ($x^2$=6.78, p<0.05). 5. I knew best about question of 'A caries may not treat if is painless' among that question ask knowledge for a caries, and appeared by thing which do not know best about question of 'Know that method that supply fluorine in water'. 6. A student who do not drink general dental know-how for a caries was high knowledge degree for a caries than a drunk student but it was no difference that keep in mind by drinking availability. Also, a student who do not smoke by smoking availability was high knowledge degree for a caries than a done student but difference that keep in mind statistically was not seen. 7. It was no difference that keep in mind by drinking availability, but a student who do not smoke by smoking availability was high relation knowledge degree with food and a caries than a smoked student, and I was shown difference that keep in mind according to smoking availability(t=-2.03, p<0.05). 8. Awareness and synthetic estimation degree of knowledge degree a student who do not smoke than a smoked student mouth knowledge degree high, and I was shown difference that keep in mind according to smoking availability(t=-2.03, p<0.05). When see as result such as singularity, family, school, all social institutions may have to help by national business coming and try so that can become national business based on special know-how for development of effective and epoch-making education program as quickly as possible.

• 보존과학연구
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• s.11
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• pp.1-9
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• 1990

The environmental controls for good conservation of all textile materials are follow as :1) Special RH conditions on textiles keep to the usually advocated 50∼55%.2) The effect of the temperature is too small to worry about in the applicable range, that is $20^{\circ}C$.3) It is important to keep soiling by air borne dirt to a minimum by an air filter or putting textiles in cases.4) Sulphur dioxide must be rekoved by an activated carbon filter or a water spray. And this concentration below $50\muGm^3$ can be regarded assatisfactory.5) Oxygen plays a part of deterioration proceses. The effect of nitrogend andinert gases in sealed show cases should be further studied.6) Ozone is detrimental to textiles. It can be removed by activated carbonfilter.7) The removal of UV radiation and blue light can be expected to increase the lifetime of dyeing and strength of fiber.50 lux is suggested for sensitive textile materials.

• Journal of The Korea Institute of Healthcare Architecture
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• v.23 no.3
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• pp.47-56
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• 2017

Purpose : This study is a basic research to establish guidelines for healthcare facility in Korean healthcare market. As a first step, it is a main purpose for making beginning point of ICU guideline to set a basic level of ICU facility size and quality by analysis current ICU facilities and existed domestic guidelines : law, criteria of healthcare insurance review and assessment service, credit of Korea institute for healthcare accreditation. Methods : First of all, the all requirements of existed guidelines are put together and summarized. The summary is compared with that of US, UK, and Australia to know its quality difference with international market. In addition, all hospitals in Korean market are classified based on total bed number and ICU bed number to know the most occupied facility size range in the market. Second of all, by comparing 15 ICUs' current setting of the public general hospital, a general condition of ICU facility would be extracted based on function, floor area per bed, services Results : 72.8% of hospitals in Korea are belonging below 500 beds hospital. Among them 200-299 beds hospitals occupied 35.3% and are shown as the most occupied hospital size. As 15 public general hospitals are analyzed, it is clear that the more bed size and services the more ICU area per bed. As a result it is sure that the 300~500 bed may be a clear line as a general ICU condition whose function and bed number relatively consistent in the range. Implications : to keep the qualified medical environment and contemporary hospital trend, the guideline as a minimum requirement keep naturally out from current healthcare settings and should reflect their limit to reconcile with the new trend in the market.

• Proceedings of the KSR Conference
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• 2000.05a
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• pp.151-156
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• 2000

The brake system is important to stop train safely. The train is sloped by regenerative brake and pneumatic brake which are continuously blended at service brake. When service is applied to train, it is controlled by train weight and brake command. The jerk limitation function is applied for impulseless smoothing braking. All brake applications in service condition have a function of the variable load control to keep the braking effort in proportion to each car load. All of control function are performed by brake controller. Therefore, we will propose the design of brake control system in order to control efficiently

• Strategy21
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• s.31
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• pp.164-189
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• 2013

Last December, the Abe government came back, and it is critical core of Northeast Asia. They visited to Yasukuni Shrine, denied to Korea's invasion and they are denying all of their invasion history. I'm afraid they want to take Dokdo. Dokdo is Korean territory, but Japan politics assert it belongs to them. To make matters worse, they are waiting an opportunity to invade. Ministry of Foreign Affair blue paper and Ministry of Defense white paper have claimed Dokdo as Japanese territory, and many right wing politicians are taking part in the Cabinet. Liberal Democratic Party of Japan is becoming more right wing politicians than before by Japan Restoration Party, and the others also have more right wing ideologies. It can't control Japan right wing political parties. They finally aim to take Dokdo. In this situation, we have to defend Dokdo. Japan must be very important partner for our nation's development. But it is necessary to trust between two countries. Dokdo is effective controlled by Korea. It is the best way how to keep Dokdo. During Dokdo is effective controlled by Korea, the Japanese Government has limited Dokdo's ownership. Now we don't have any way to keep Dokdo except more effective control. We have strategies about Japanese claim of Dokdo's ownership as follows. First, we can overpower Japan right wing politics as Japan conscientious force's ideology. Second, Japan politics say to Dokdo's ownership is based on The San Francisco Treaty. But it is not right. Third, we have to exchange a lot of local government and civic society in Japan. Finally, we must prepare thoroughly to bring the matter to the International Court of Justice.

• Journal of Digital Convergence
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• v.7 no.1
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• pp.1-7
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• 2009

By no means rapid advances in technology affects the working and improvement of all systems built to increase the quality/standards of human living. Information technologies as the main driving force of technological progress today happen to be a sine qua non for all organizations hoping to keep pace with or surpass rivals. However, despite their vital advantages it is true that these create undesirable side effects that harm social systems and the rights of persons. Similar to all others in the world Turkey is trying to cope with the problem through creating an appropriate legal and administrative substructure trusted to discontinue or at least minimize such criminal acts.

• Journal of the Korean Society of Safety
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• v.28 no.1
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• pp.109-116
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• 2013

The objective of this study is to develop a new system that is simpler to be used to keep the safe workplace at the small food manufacturers which employees less than 10 persons. The number of these small food manufacturers is 13,853 and account for almost 80% of all food manufacturers. Most of these companies do not pay attention to safety and thus keep high accident potential. It is very important to persuade these companies to manage safety but they can hardly handle the complicated requirements of safety, health, quality, food quality, and musculoskeletal disorders intervention. This system is intended to develop a system which can be easily implemented but comprehensive to reflect main points in safety management, musculoskeletal disorders intervention,. ISO 9001, ISO 14001, KOSHA 18001, GAP and ISO 22000.