• 디지털융복합연구
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• 제2권1호
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• pp.57-73
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• 2004

Due to the rapid development of Information Technology and the Internet, e-business has bloomed and prevailed recently. As the result of this phenomenon, enterprises introduce CRM as a new process accessible to customers. The purpose of this study is to examine the factors affecting the performance of CRM based on precedent theoretical studies. So, the empirical test is conducted to various hypotheses related to the research model. 206 questionnaires for this study are collected. The result of how the organizational characteristics influence on the performance of CRM shows that they have a positively significant effect on it in order of expert security, top management's support and customer information-centric culture, and department collaboration. Evaluation and compensation system don't influence on the performance of CRM directly.

• ETRI Journal
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• 제33권5호
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• pp.826-829
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• 2011

Distributed systems particularly suffer from Sybil attacks, where a malicious user creates numerous bogus nodes to influence the functions of the system. In this letter, we propose a Bloom filter-based scheme, SybilBF, to fight against Sybil attacks. A Bloom filter presents a set of Sybil nodes according to historical behavior, which can be disseminated to at least n (e-1)/e honest nodes. Our evaluation shows that SybilBF outperforms state of the art mechanisms improving SybilLimit by a factor of (1/e)${\gamma}$ at least.

• 한국데이타베이스학회:학술대회논문집
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• 한국데이타베이스학회 2000년도 추계학술대회 E-Business와 정보보안
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• pp.269-279
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• 2000

인터넷의 발달로 정보보호에 대한 인식이 증가하면서 정보보호 서비스를 제공하기 위한 연구 및 개발의 필요성이 증가하고 있다. 정보보호 서비스를 제공하기 위하여 개발되고 있는 시스템은 일반적인 시스템보다 보안성 유지의 필요성이 훨씬 중요하기 때문에 이러한 시스템의 안전성을 평가하는 기술은 매우 중요하다. 그러나 아직까지 정보보호 서비스를 제공하는 시스템에 대한 안전성을 평가하는 기술이나 연구는 전무한 실정이다. 본 논문에서는 IP 레벨에서의 정보보호 서비스를 제공하기 위하여 개발되고 있는 인터넷 패킷보호 보증플랫폼에 대한 보안성을 평가하는 시스템을 설계하기 위하여 이 시스템에서 제공하는 정보보호 서비스와 이러한 서비스가 정상적으로 제공되고 있는 지를 평가하기 위한 보안평가 시스템을 설계한다.

• 정보보호학회지
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• 제3권4호
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• pp.38-49
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• 1993

미국은 안전한 시스템에 대한 평가를 위하여 TCSEC(Trusted Computer System Evaluation Criteria)을 1985년에 발표하였고, 이는 안전한 시스템의 구매자, 개발자, 평가자 들에 의해 사용되었다. 그러나 TCSEC의 적용 경험에서 발견된 문제점의 보완, 상용의 보안 정책의 수용, 각국평가 기준서들과의 상호 연동성 등의 고려 등 새로운 요구조건들이 제기됨에 따라 NIST 와 NSA 가 TCSEC 을 대치할 새로운 보안 평가기준서를 제작하기 위한 공동의 프로젝트를 수행하게 되었고 1993년FC(Federal C riteria)의 첫번째 작업 초안을 발표하였다. 본 고에서는 FC의 추진동기, 목적, 구성의 특징 등을 분석하고 현재 시도되고 있는 국제 보안평가 기준서의 작성동향등을 파악함으로써 국내 보안평가 기준서 작성 필요성과 작성시 피요한 사항들을 검토하였다.

• Journal of Multimedia Information System
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• 제5권2호
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• pp.99-104
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• 2018

Phishing website has become a crucial concern in cyber security applications. It is performed by fraudulently deceiving users with the aim of obtaining their sensitive information such as bank account information, credit card, username, and password. The threat has led to huge losses to online retailers, e-business platform, financial institutions, and to name but a few. One way to build anti-phishing detection mechanism is to construct classification algorithm based on machine learning techniques. The objective of this paper is to compare different classifier ensemble approaches, i.e. random forest, rotation forest, gradient boosted machine, and extreme gradient boosting against single classifiers, i.e. decision tree, classification and regression tree, and credal decision tree in the case of website phishing. Area under ROC curve (AUC) is employed as a performance metric, whilst statistical tests are used as baseline indicator of significance evaluation among classifiers. The paper contributes the existing literature on making a benchmark of classifier ensembles for web phishing detection.

• International Journal of Internet, Broadcasting and Communication
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• 제15권3호
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• pp.231-238
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• 2023

As the demand for distance education increases, interest in the management of learners' rights is increasing. Blockchain technology is a technology that guarantees the integrity of the learner's learning history, and enables learner-led learning control, data security, and sharing of learning resources. In this paper, we proposed a blockchain technology-based learning management system based on Hyperledger Fabric that can be verified through permission between nodes among blockchain platforms. Learning resources can be shared differentially according to the learning progress. Also the percentage of individual learners that can be managed. As a result of the study, the superiority of the platform in terms of convenience compared to the existing platform was demonstrated. As a result of the performance evaluation for the research in this paper, it was confirmed that the convenience was improved by more than 5%, and the performance was 4-5% superior to the existing platform in terms of learner satisfaction.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2009년도 추계학술발표대회
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• pp.685-686
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• 2009

본 연구에서는 침입방지시스템의 기반기술을 조사하고 침입방지시스템의 품질시험 평가를 위한 품질특성을 분석하며 본 연구에서는 기존의 소프트웨어 품질 평가 기술 및 표준화에 관한 관련 연구를 추진하고, 침입방지시스템 보안성 품질 평가 모델을 개발하였다. 또한, 현재 품질 평가 국제 표준화 동향에 있어서도 기존에 소프트웨어 품질 평가를 위해서 지침서로 사용하였던 소프트웨어의 품질 평가 국제 표준화 문서 ISO/IEC9126과 ISO/IEC 14598을 통해서 품질 평가 모델을 개발하였다.

• 한국콘텐츠학회논문지
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• 제22권10호
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• pp.506-514
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• 2022

형벌을 중심으로 처벌을 통해 재범을 억제하고자 하는 방식은 다수국가들의 형사정책 연구를 통해 그 한계가 나타나고 있다. 이에 대한 대안으로 지역사회구성원과 피해자, 가해자의 화해와 조정을 통해 범죄자가 사회의 일원으로 복귀하는 것을 목적으로 하는 회복적 사법이 범죄 및 재범방지의 패러다임으로 등장하고 있다. 스웨덴은 대표적인 복지국가이자 회복적 사법에 기반한 범죄자 교정을 통해 긍정적인 효과를 확인하고 있다. 또한, 법무보호복지제도와 관련해 안정된 체계를 갖추고 있으며, 운영프로그램의 평가와 인증 과정에서 증거기반의 원칙을 활용한 과학적이고 합리적인 운영으로 낮은 재범률과 사회보장을 유지하고 있다. 그러나 아직 국내에서는 스웨덴을 비롯한 복지 및 교정 선진국에서 시행되는 법무보호복지제도에 대한 연구가 미흡한 실정이다. 이에 본 연구는 스웨덴의 범죄정책과 법무보호복지제도에 관한 고찰을 통해 국내 법무보호복지제도가 나아갈 방향을 탐색하고 국내 제도의 미진한 영역 및 보완점을 파악하여 국내 법무보호복지제도의 개선 및 사업 확대를 위한 토대를 마련하고자 한다.

• 안보군사학연구
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• 통권7호
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• pp.271-303
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• 2009

"Ubiquitous sensor network" definition is this-Someone attaches electro-magnetic tag everything which needs communication between man to man, man to material and material to material(Ubiquitous). By using attached every electro-magnetic tag, someone detects it's native information as well as environmental information such as temperature, humidity, pollution and infiltration information(Sensor). someone connects it realtime network and manage generated information(Network). 21st century's war is joint combined operation connecting with ground, sea and air smoothly in digitalized war field, and is systematic war provided realtime information from sensor to shooter. So, it needs dramatic development on watch reconnaissance, command and control, pinpoint strike etc. Ubiquitous computing and network technologies are essential in national defense to operate 21st century style war. It is possible to use many parts such as USN combined smart dust and sensor network to protect friend unit as well as to watch enemy's deep area by unmanned reconnaissance, wearable computer upgrading soldier's operational ability and combat power dramatically, RFID which can be used material management as well as on time support. Especially, unmanned watch system using USN is core part to transit network centric military service and to get national defense efficiency which overcome the dilemma of national defense person resource reducing, and upgrade guard quality level, and improve combat power by normalizing guardian's bio rhythm. According to the test result of sensor network unmanned watch system, it needs more effort and time to stabilize because of low USN technology maturity and using maturity. In the future, USN unmanned watch system project must be decided the application scope such as application area and starting point by evaluating technology maturity and using maturity. And when you decide application scope, you must consider not only short period goal as cost reduction, soldier decrease and guard power upgrade but also long period goal as advanced defense ability strength. You must build basic infra in advance such as light cable network, frequency allocation and power facility etc. First of all, it must get budget guarantee and driving force for USN unmanned watch system project related to defense policy. You must forwarded the USN project assuming posses of operation skill as procedure, system, standard, training in advance. Operational skill posses is come from step by step application strategy such as test phase, introduction phase, spread phase, stabilization phase and also repeated test application taking example project.

• 한국유기농업학회지
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• 제20권3호
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• pp.267-282
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• 2012

In this study, RPS system, one of the renewable energy support systems, is utilized for economic analysis of solar generation equipment and the fuel cost savings plan for controlled horticulture farms with high fuel-cost dependency and facility applicability were evaluated. On the exterior of the upper layer of glass greenhouse (9917$m^2$) of controlled horticulture farms using bunker C oil, half of the area (4958$m^2$) was utilized for theoretical installation and operation of 450kW-level solar power generator, and as the result, first, the effect of investment cost only of solar generation system was found to be quite excellent, but it was analyzed that there were limits to saving the fuel costs of the controlled horticulture farms. Second, when geothermal system was first introduced in the farm and solar system was additionally introduced, it was analyzed that the effect of introducing solar system was excellent. In order to apply such effects to the sites of farming, partial supplementation of RPS system which is being uniformly applied regardless of the purpose of renewable energy is necessary. When the subject of use directly install facilities where it is directly connected to national added-value such as food security created by the farming industry, it is necessary to introduce appropriate system that corresponds to such. Moreover, it was studied that the quick development of demonstrative complex that can practically evaluate the applicability of renewable energy in farming industry and interest and preparation of related institutions in financial support structure for its site application would lead to success.