• 한국경영정보학회:학술대회논문집
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• 한국경영정보학회 2008년도 춘계학술대회
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• pp.428-433
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• 2008

The online advertising industry's business model undertakes the change from CPM (cost-per-mille)-based to CPC (cost-per-click)-based. However, due to the problem of 'Click Fraud', CPA (cost-per-action) has been regarded as a new step. For CPA, publishers need to get information after a user clicks an advertisement. Therefore, in CPA, the key is to get Conversion Action Data (CAD). This paper introduces two existing mechanisms for getting CAD, compare their characteristics, and analyze their limitations. Then the two new mechanisms are introduced and their requirements and feasibility are analyzed. Lastly, we compare the existing two and the new two mechanisms, and point out each mechanism's business possibility, value and Application Area. This paper will help publishers choose the most appropriate mechanism on the basis of their situation.

• 경영정보학연구
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• 제10권2호
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• pp.123-135
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• 2008

온라인 광고모델의 기본 모델은 CPM (cost-per-mille) 기반 모델에서 CPC (cost-per-click) 기반 모델로 변화해왔으며, CPA (cost-per-action) 모델이 온라인 광고산업의 새로운 대안 모델로 제시되고 있다. CPA 모델에서는 사용자가 어떤 광고를 클릭 했는지에 관한 정보를 퍼블리셔(Publisher)가 보유할 수 있어야 하며, 그래서, CPA 모델의 핵심은 Conversation Action Data를 확보하는 것이다. 이 논문에서는 이를 획득하는 두 가지 기존 메커니즘을 소개하고, 이들의 특징을 비교하고, 각 메커니즘의 한계를 분석한다. 그 다음에 두 가지 새로운 메커니즘을 설계하고, 작동 요건을 분석하고, 실용성을 평가한다. 마지막으로, 기존의 메커니즘들과 새로운 메커니즘들의 특징을 비교하고, 각 메커니즘의 비즈니스 가치와 유용성, 응용 범위를 분석한다. 이 논문에서 제안된 2가지의 새로운 메커니즘과 기존 메커니즘과 비교 분석을 통해 퍼블리셔에게 최적 CPA 메커니즘에 관한 판단정보를 제공할 수 있을 것으로 판단된다.

• International Journal of Computer Science & Network Security
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• 제21권7호
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• pp.305-316
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• 2021

The objective is to recognize the better opportunities from targeted reveal advertising, to show a banner ad to the consumer of online who is most expected to obtain a preferred action like signing up for a newsletter or buying a product. Discovering the most excellent commercial impression, it means the chance to exhibit an advertisement to a consumer needs the capability to calculate the probability that the consumer who perceives the advertisement on the users browser will acquire an accomplishment, that is the consumer will convert. On the other hand, conversion possibility assessment is a demanding process since there is tremendous data growth across different information dimensions and the adaptation event occurs infrequently. Retailers and manufacturers extensively employ the retail services from internet as part of a multichannel distribution and promotion strategy. The rate at which web site visitors transfer to consumers is low for online retail, out coming in high customer acquisition expenses. Approximately 96 percent of web site users concluded exclusive of no shopper purchase[1].This category of conversion rate is collected from the advertising of social media sites and pages that dataset must be estimating and assessing with the concept of big data clustering, which is used to group the particular age group of people along with their behavior. This makes to identify the proper consumer of the production which leads to improve the profitability of the concern.

• 호남수학학술지
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• 제44권4호
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• pp.572-593
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• 2022

Crime committed by civilians and criminals using legal and illegal firearms and conversion of legal firearms into illegal ones has become a common practice around the world. As a result, policies to control civilian gun ownership have been debated in several countries. The issue arose because the linkages between firearm-related mortality, weapon accessibility, and violent crime data can imply diverse options for addressing criminality. In this paper, we have projected a mathematical model in terms of the Caputo fractional derivative to address the issues viz. input of legal guns, crime committed by legal and illegal guns, and strict government policies to monitor the license of legal guns, strict action against violent crime. The boundedness, existence and uniqueness of solutions and the stability of points of equilibrium are examined. It is observed that violent crime increases with the increase of crime committed by illegal guns, crime committed by legal guns and, decreases with the increase of legal guns, the deterrent effect of civilian gun ownership, and action of law against crime. Further, legal guns increase with the increase of the limitation of trade of illegal guns and decrease with the increase of conversion of legal guns into illegal guns and increase of the growth rate of illegal guns. Again, as crime is committed by legal guns also, the policy of illegal gun control does not assure a crime-free society. Weak gun control can lead to a society with less crime. Theoretical aspects are numerically verified in the present work.

• 대한전기학회논문지:전력기술부문A
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• 제54권7호
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• pp.323-327
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• 2005

This paper presents an operator training simulator for power system restoration against massive black-out. The system is designed especially focused on the generality and convenient setting up for initial condition of simulation. The former is accomplished by using power flow calculation methodology, and PSS/E data is used to define the initial situation. The proposed simulator consists of three major components - the power flow(PF) module, data conversion(COW) module and GU subsystem. PF module calculates power flow, and then checks overvoltage of buses and overflow of lines. COW module composes an Y-Bus array and a data base at each restoration action. The initial Y-Bus array is constructed from PSS/E data. The user friendly GUI subsystem is developed including graphic editor and built-in operation manual. As a result, the maximum processing time for one step operation is 15 seconds, which is adequate for training purpose. Comparison with PSS/E simulation proves the accuracy and reliability of the training system.

• 대한전기학회:학술대회논문집
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• 대한전기학회 2003년도 하계학술대회 논문집 A
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• pp.181-183
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• 2003

This paper presents an operator training simulator for power system restoration against massive black-out. The system is designed especially focused on the generality and convenient setting up for initial condition of simulation. The former is accomplished by using on line calculation methodology, and PSS/E data is used to define the initial situation. The proposed simulator consists of three major components - the Power flow(PF) module, data conversion(CONV) module and CUI subsystem. PF module calculates power flow, and then checks overvoltage of buses and overflow of lines. CONV module composes an Y-Bus array and a data base at each restoration action. The initial Y-Bus array is constructed from PSS/E data. The user friendly GUI module is developed including graphic editor and built-in operation manual. As a result, the maximum processing time for one step operation is 15 seconds, which is adequate for training purpose. Comparison with PSS/E simulation proves the accuracy and reliability of the training system.

• 조명전기설비학회논문지
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• 제20권9호
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• pp.18-23
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• 2006

This paper presents an operator training simulator for power system restoration against massive blackout. The system is designed especially focused on the generality and convenient setting up for initial condition of simulation. The former is accomplished by using power flow calculation methodology, and PSS/E data is used to set up the initial state for easy setting. The proposed simulator consists of three major components-a power flow(PF), a data conversion(CONV), and, a GUI module. The PF module calculates power flow, and then checks over-voltages of buses and overloads of lines. The CONV module composes a Y-Bus array and a database at each restoration action. The initial Y-Bus array is composed from PSS/E data. A user friendly GUI module is developed including a graphic editor and a built-in operation manual. The maximum processing time for one step operation is 15 seconds, which is adequate for training purpose.

• 정보보호학회논문지
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• 제25권6호
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• pp.1399-1410
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• 2015

기업들은 다가오는 데이터 경쟁시대를 이해하고 이에 대비해야 한다며 가트너는 기업의 생존 패러다임에 많은 변화를 요구하고 있다. 또한 통계 알고리즘 기반의 예측분석을 통한 비즈니스 성공 사례들이 발표되면서, 과거 데이터 분석에 따른 사후 조치에서 예측 분석에 의한 선제적 대응으로의 전환은 앞서가고 있는 기업의 필수품이 되어 가고 있다. 이러한 경향은 보안 분석 및 로그 분석 분야에도 영향을 미치고 있으며, 실제로 빅데이터화되고 있는 대용량 로그에 대한 분석과 지능화, 장기화되고 있는 보안 분석에 빅데이터 분석 프레임워크를 활용하는 사례들이 속속 발표되고 있다. 그러나 빅데이터 로그 분석 시스템에 요구되는 모든 기능 및 기술들을 하둡 기반의 빅데이터 플랫폼에서 수용할 수 없는 문제점들이 있어서 독자적인 플랫폼 기반의 빅데이터 로그 분석 제품들이 여전히 시장에 공급되고 있다. 본 논문에서는 이러한 독자적인 빅데이터 로그 분석 시스템을 위한 실시간 및 비실시간 예측 분석 엔진을 탑재하여 사이버 공격에 선제적으로 대응할 수 있는 프레임워크를 제안하고자 한다.

• 한국정보기술학회논문지
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• 제17권6호
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• pp.115-122
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• 2019

CCTV(Closed-circuit Television)는 사고 예방 및 시설 안전을 위해 매년 설치대수가 증가함에 따라 1인당 CCTV에 노출되는 횟수가 증대되고 있으며, 노출되는 대상의 프라이버시 보호를 위해 지능형 영상감시 시스템 기술이 각광받고 있다. 지능형 영상감시 시스템은 촬영된 영상 데이터에 대한 단순한 식별에서 피사체의 행동 유형과 현장 상황 판단 등을 수행하거나, 촬영된 피사체의 정보가 노출될 수 있는 정보를 외부로 유출되지 않도록 프라이버시 보호를 위한 처리 과정을 진행한다. 제안된 기술은 영상감시 시스템에 적용되어 영상감시 시스템으로부터 촬영된 원본 영상 정보를 유사 영상 정보로 변환함으로서 외부에 원본 영상 정보가 유출되지 않도록 하는 기술이다. 본문에서는 미리 설정된 유사도에 근접하는 가상의 얼굴 이미지를 삽입하는 영상 변환메커니즘을 제안한다.

• 대한약리학회지
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• 제10권1호
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• pp.55-59
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• 1974

Further elucidation of the mechanism of halothane's negative inotropic action has resulted from a study of the effect of various substrates on halothane-depressed rat atria. Approximately 6 mg% halothane was required to maintain a 50% depression of the contractility of rat atria suspended in a modified Krebs-Ringer bicarbonate glucose medium, pH 7.4, $30^{\circ}C$ for 2hr. Both lactate and acetate were found to restore partially the contractility of halothane-depressed atria. The maximally effective concentration of lactate was 5 mM; for acetate it was 2.5mM. Neither 5 nor 20 mM of additional glucose was effective in restoring the force of contraction of halothane-depressed atria. The results are consistent with the hypothesis that halothane exerts at least a part of its negative inotropic effect on rat atria by inhibiting either the uptake or utilization of glucose by the myocardium. The site of blockade must be prior to the conversion of pyruvate to acetyl CoA. In our previous report dealing with the mechanism of cardiac depressant action of inhalation anesthetic halothane, it has been demonstrated that: 1) approximately 6 mg/100 ml halothane is required to maintain 50% depression of the force of contraction of isolated rat atria in Krebs-Ringer bicarbonate glucose medium; 2) pyruvate partially restores the contractility of halothane-depressed atria, but has no effect on normal atria; the partial recovery of depressed atria by the addition of sodium pyruvate is due to the effect of the pyruvate ion itself, not to the sodium ion; 4) addition of pyruvate, to atria depressed with hypertonic medium, produced only further depression. From these findings we concluded that the cardiac depressant action of halothane on rat atria is a manifestation of inhibition of glucose uptake or utilization. The present studies were undertaken to observe the effect of other substrates on halothane-depressed atria in order to substantiate our conclusion. As with the case of pyruvate, lactate and acetate also partially restored the force of contraction of halothane-depressed atria. These data are consistent with the hypothesis that halothane inhibits glucose uptake or utilization in the glycolytic cycle of the myocardium.