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      • ATM망의 버스트 큐잉 구조에서 유체 흐름 모델을 이용한 실시간 트래픽 제어에 관한 연구

        박동석 조선대학교 1999 국내석사

        RANK : 247647

        In this paper, we proposed real-time algorithem based on discreate fluid flow model that have the burst traffic of real time service for connection admission in asynchronous transfer mode network. Proposed real time algorithm needs the uniformly memory scale and bandwidth to determine connection admission neither one thing nor the other, because cell loss probability is fundemental part of quality of service of various traffic. CLP(cell loss priority) of excess cell of each of traffic source is don't meet the QOS(quality of service) of entire source type, therefore each type CLP of traffic was produced by proposed real time algorithm that afforded sufficient up bounded of bandwidth. Computer simulation show that for any particular value of the burst scale loss factor increases, as the activity factor decreases towards an upper limit given by the approximate result.

      • 信用카드 犯罪에 관한 硏究

        박동석 한국해양대학교 2006 국내석사

        RANK : 247631

        As rapid progress of science, the use of credit card is expanded as means of settlement for purchase or taking service not only at the stores affiliated with the credit cards(Off-line) but also Internet(On-line). In proportion to this expansion, the crime of credit card is grown. These crimes are made to harm to private property and further more made dangerous to appropriate function of credit cards because of threat to 'business by credit cards', what was created by between credit card company and its customer. But, the purpose of existing Specialized Credit Financial Business Act is supporting sound and creative growth of credit cards company, people's convenience of finance and contributing to the development of national economy, so it is not sufficient for crime of credit cards. First, there is no penalty clause about the recent issue related to fraudulent use of self-nominal credit cards. Secondly, the penalty for fraudulent use of credit cards under Specialized Credit Financial Business Act, as a special law, is 7 years, but penalty for fraud under Criminal Law, as a general law, is 10 years. There is no equity. In this study I inquired into existing criminal responsibility about crime of credit card, especially illegal acquisition and fraudulent use of credit cards, relationship between Specialized Credit Financial Business Act as a special law and Criminal law as a general law and problems and countermeasure of existing Specialized Credit Financial Business Act and Criminal Law. To prevent misuse of credit cards, participating stores must follow the directions of checking identity set forth in the credit loan financing law. A law must be established to let the credit card companies to reject sales bill if a credit card crime has been committed due to not checking the user's ID. The credit card members should cooperate to settle a credential society by protecting public trust of credit cards. Also, they should cooperate actively in ID checking of participating stores thinking it can protect their damages too. Moreover, a system of everytime inputting a password by transaction using a credit card should be established. And principally, a system prohibiting the use of easy-to-find passwords, such as phone numbers or registration must be established as well. It is only right to see a participating company as the deceived in a transaction by a credit card, and the victim, as a result, is the credit card company. Also, an act of using an illegally acquired credit card in another person's name is considered as a substantial struggle between a fraud of the criminal law and an illegal use of the credit loan financing law. An using a credit card of another person's name in an ATM is considered as a fraud against the computer use since the computer use fraud law of Clause 347 has been revised in December 19, 2001 to include 'unauthorized inputting of and altered information to process' as a constitutional condition. The theories of thief, fraud, and innocence are debated about an act of withdrawal of cash from ATM without desire to pay. However since it is an act of damaging the credit card company by deceiving the credit card company, the theory of fraud is right. Crimes regarding sales bill are usually a crime committed by a participating store. To prevent these crimes, credit card companies must examine harder as it would in recruiting participating stores. In other words, credit card companies should consider that not only being interested in income from credit card fees but also recruiting qualified stores is a shorter way to set a credential society and a survival strategy of credit card companies. Furthermore, they should examine sales bills more carefully to not overlook any illegal activities of participating stores and check participating stores to look for any abnormal increase in sales. There are many special crimes committed by people with a lot of knowledge in the structure of credit card transactions and computers in credit card related crimes. Thus an investigation and proving the crime is difficult. To deal with these crimes, investigators with professional knowledge should be obtained and a continuous research about criminal techniques such as collecting and analyzing criminal cases. Although the credit loan financing law has regulations to deal with so called credit card loans, there are many flyers advertising credit card loans and many people know that there are credit card loans in fact. This situation will incapacitate criminal laws by allowing selected application of criminal laws.

      • 南北韓의 統一政策과 平和統一 展望

        박동석 朝鮮大學校 敎育大學院 1988 국내석사

        RANK : 247631

        The South and North Korea have shown a remarkable difference in viewpoints of reunification since the division of 39 years south and north korea and we would see that the discussion of reunification plan also was spread on the extension line of constitutions, and it has deepened the situation of division at home and abroad rather than the development for the realization of reunification. Thus I inquired into the object of reunification, that is, the essence of reunification problems, the inevitability and necessity of competition of hegemony, laying strees on the plan of racial unity and democratic reunification and the founding plan of Goryeo democratic federal repubic and compared the functionalistic unity theory of south korea with the federalistic unity theory of north korea and classified the changing process about event-centered and plan-centered reunification plans. The comparision of strategic design analysis and reunification plan in the reunification plan of south and north korea examined the process methods or approaching processes , the organization of talks and the difference of delegation make-up, the future image of our reunification fatherland , and the effectiveness of the plans. The plan of reunification of south korea has pursued the democratic reunification of peaceful ways through gradual processes , but north korea has tried to achieve the object to communise the whole korean peninsula by means of military power and peace offensive . Also our the plan of racial unity and democratic reunification is heading for one accomplished reunificational democratic republic pursued the ideals of race, democracy, liberty , well-being by means of democratic processes and peaceful methods , while the reunification plan of north korea does not realize the reunification fatherland with one unity nation but pursue the uncomplete reunification to continue the two regional governments under the good-looking apperance. But when we consider 1) the differences of south and north korean national power, 2) the changing situation in inside the north korea, 3) the change of situattion in and around korean peninsula , etc and especially nowadays the changing trend of communism society , we are to endeavor to unite south and north korea peacefully composed of the top- level conference of south and north korea and the mutual interchange with magnanimity and positive attitudes because of very hopeful signs about our peaceful reunification processes.

      • 전자상거래업체의 프라이버시 정책 최적화 방안에 관한 연구

        박동석 한양대 대학원 2000 국내석사

        RANK : 247631

        기업-소비자간 전자상거래(Business to Customer Electronic Commerce) 중 최근 급속히 증가하고 있는 인터넷 전자상거래의 정보 흐름에 있어서 보안과 개인의 프라이버시에 대한 중요성과 관심이 폭증되고 있다. 전자 상거래가 정착되는 과정에서 정보의 통합성과 시스템에 대한 보안성을 확보할 안전한 수단은 필수적이다. 또한, 프라이버시를 보장하는 측면에서 고객정보의 저장, 이용, 노출에 대한 기업전략은 고객확보에 중요한 변수로 등장하고 있다. 본 논문에서는 프라이버시와 관련된 이슈를 고려하여 고객과 전자 상점의 관계에 대해 분석을 수행하고 전략적 차원에서 인터넷 기업의 프라이버시 정책에 대한 연구를 시도하였다. 프라이버시가 전자 상거래에 미치는 영향을 고려하여 전자 상점이 고려해야 할 적정 정보활용 모형을 개발하고 신뢰도가 상거래에서 어떻게 영향을 미치는지를 분석한다. 또한 0-1 정수계획법을 활용하여 프라이버시 정책에 따라 예상되는 고객의 총 이용도를 최대화시키는 모델을 제시하고 활용가치수준의 계수들의 변화에 대한 총 이용도의 분석과 이용되어지는 항목에 대한 선택의 결과로서 기업이 가질 수 있는 최적전략을 제시한다.

      • IMT-2000용 저잡음 증폭기 설계에 관한 硏究

        박동석 건국대학교 산업대학원 2001 국내석사

        RANK : 247631

        In this dissertation, the 2.1GHz IMT-2000 Low Noise Amplifier, one of main part of receiving system, was designed and implemented. The efforts for the development of IMT-2000 telecommunication system have been concentrated on the implementation of antenna, LNA, filter, mixer and oscillator. For the design and the implementation of the Low Noise Amplifier, It was as follows. Three stage Low Noise Amplifier (LNA) influencing on noise performance on IMT-2000 system was designed. Especially, focused on optimizing workability for manufacturing, Noise Figure, and Gain. As the results, It was obtained that gain of the proposed Low Noise Amplifier, containing the RF cable loss, is 31 dB gain and 0.9dB Noise Figure from 1.8GHz to 2.3GHz range.

      • Al이 도핑된 ZnO의 흡착특성과 광촉매 활성

        박동석 부경대학교 대학원 2009 국내석사

        RANK : 247631

        본 실험을 통해 Al-doped ZnO (AZO)촉매의 자외선영역 하에서의 산성 및 염기성 염료의 흡착반응과 광촉매적 분해 반응에 대하여 다음과 같은 사실을 확인 할 수 있었다. 첫째, 자외선을 이용한 광분해 반응에서 실험에서 제조된 AZO(Al-doped ZnO)촉매는 그 광흡수 특성과 일치하는 광분해 특성을 보였고 그 중에서 Al의 함량이 높을수록 높은 광촉매적 활성이 나타났고 광촉매 첨가량이 증가 할수록 활성 또한 증가 하였으나 일정량 이상이 되면 오히려 활성이 저하됨을 알 수 있었다. 둘째, 흡착반응에서 Methylene blue를 제외한 나머지 반응물들은 모두 흡착거동을 나타냈으며 Al의 도핑량이 증가 할수록 흡착거동이 향상되었고 이는 강한 산점이 생겨 상대적으로 산성 성질을 띄는 반응물과의 흡착능력을 향상시키는 결과를 가져왔다. 그리고 본래의 ZnO의 특성을 가지고 있기 때문에 모든 반응물은 자외선영역 하에서 광촉매적 활성을 나타내었다. 셋째, 자외선에서 높은 활성을 지니는 AZO는 기존의 광촉매인 ZnO보다 훨씬 좋은 광촉매적 활성이 나타났고, Al이 첨가됨에 따라 기존의 광촉매의 물성을 변화시켜 저 비용, 고효율의 특성을 지님을 알 수 있다. 그리고 P-25의 활성에는 미치지 못했으나 자외선에서 아주 좋은 반응을 나타냄을 알 수 있다. Methylene blue를 제외한 나머지 반응물들은 모두 흡착과 광분해가 동시에 진행되었고 AZO는 유기염료 처리에 상당한 효과를 가지는 것으로 판단된다. ZnO has a lot of advantages as a functional material, such as non-toxicity, high stability, low cost and high photocatalytic activity in the degradation and complete mineralization of environmental pollutants. In this research, we have synthesized Al-doped ZnO (AZO) nanostructured powders by sol-gel process and used as a photocatalyst for the decomposition of acid and base dye. The prepared catalysts were characterized by XRD and UV-vis diffuse reflectance spectroscopy. Photocatalytic activities of the AZO and ZnO were investigated and compared with each other. The AZO showed considerably high photocatalytic activity for the degradation of acid and base dye in UV light as compared with undoped ZnO.

      • 기업 특성과 사회적 책임

        박동석 경상대학교 대학원 2009 국내석사

        RANK : 247631

        This study analyzes the relationship between corporate characteristic and a CSR(Corporate Social Responsibility) activity. Conducting a survey on the domestic listed companies in 2001-2008, this study explore into an influence which characteristic of the companies have a CSR activity by making use of the KEJI Index announced by Korea Economic Justice Institute as an alternative to the CSR activity. First of all, this study analyzes on the effect of corporate ownership and governance structure has on a CSR activity. Analysing the sample by the group - conglomerate(Jaebeol) and non-conglomerates, the corporate belonging to conglomerate(Jaebeol) - showed a higher CSR activity. Secondly, this study look into the influence of capital structure on a CSR activity. Corporate with a higher debt ratio asserted that a CSR activity would be limited due to the entrepreneur's risk-aversion propensity and the heightened creditor supervision. The study found that corporate with a higher debt ratio showed a lower CSR activity. Thirdly, in order to investigate on the relationship between a corporate financial characteristic and a CSR activity level, this study chose profitability and growth as the variables for financial characteristics to claim that the higher the variables become, the higher a CSR activity level would be. As a result, corporate with higher growth showed a higher CSR activity. Fourthly, this study explore into the relationship between a corporate outer characteristic and a CSR activity. As a variable for a corporate outer characteristic, this study chose corporate size and age to investigate into the relation between them and a CSR activity level. As a result of analysis, the large corporate in size showed a higher CSR activity.

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