• Journal of Korean Society of Industrial and Systems Engineering
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• v.36 no.4
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• pp.77-83
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• 2013

This study is to develop a mathematical analysis model to grasp the behaviors of cartels. Cartels are formed tacitly and cause tremendous damage to consumers in modern society which is composed of advanced industry structure. The government authorities have instituted the leniency programs to respond cartels. However, cartels will continue unless there are legal sanctions against cartels based on an accurate analysis of leniency programs. The proposed cartel equilibrium analysis model is a mathematical behavior model which is based on the existing methods and the prison's dilemma of game theory. Therefore, the model has a form of pay off matrix of two players. We use a iterated polymatrix approximation (IPA) method to deduct a Nash equilibrium point. The model is validated by an empirical analysis as well.

• Journal of Korea Fair Competition Federation
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• no.96
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• pp.8-13
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• 2003

카르텔 규제에서 가장 중요하고도 어려운 문제는 위법행위를 적발하고 이를 뒷받침하는 증거를 확보하는 일이다. 카르텔에 대한 법 집행의 실효성을 제고하기 위해서는 반드시 카르텔을 효과적으로 적발$\cdot$입증할 수 있는 조사수단을 갖추어야 하는바, 경쟁당국의 사법경찰권은 카르텔에 대한 법 집행상의 문제를 극복하기 위한 주요 수단이 된다. 한편 카르텔에 대한 강제 조사권은 카르텔의 적발$\cdot$처벌확률을 높임으로써 카르텔 행위자의 자진신고 및 조사협조의 유인을 강화하여 leniency program의 실효성 제고에 기여할 수 있다. 그렇지만 성격상 남용의 우려를 야기하므로 사법경찰관 제도는 반드시 선진국 수준의 엄격한 요건과 절차에 따라 운영되어야 할 것이다.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.6
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• pp.375-384
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• 2021

This study explored the change in keywords and topics in newspaper articles related to schizophrenia after the Gangnam murder case. The study examined newspaper articles related to schizophrenia for five years before and after the Gangnam murder case. A semantic network analysis was conducted using the NetMiner 4.4.1 program. 610 articles between 2013 and 2018 were retrieved from 8 national newsletters. The most frequent core keyword was 'treatment' before the murder case, but 'incidents' after the case. Four topics were identified: 'becoming chronic if missing the time of treatment due to prejudice', 'being curable with early treatment', 'living an ordinary life with medication', 'being indicted as a murderer while impaired by a mental disorder' before the murder case. After the case, four topics were identified: 'committing murder for delusions, not misogyny', 'medication non-adherence leads to more impulsive behavior', 'claiming leniency for criminals due to the mental impairment', 'killing the police who were mobilized to stop stabbing rampage'. These findings suggest that newspaper articles should provide accurate information about schizophrenia to reduce prejudice and stigma toward patients with schizophrenia and other forms of mental illness.