• 정보보호학회논문지
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• 제14권3호
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• pp.137-144
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• 2004

3GPP-WLAN(3rd Generation Partnership Project-Wireless Local Area Network) interworking은 WLAN UE(user equipment)에 의한 3GPP 시스템내에서 자원 이용과 서비스 접근을 의미하며, 3GPP 서비스와 기능을 WALN 액세스 환경으로 확장함으로써, 3GPP 시스템에 무선 액세스 기술로 WLAN을 보완적으로 이용하는 것을 목적으로 한다. 본 논문에서는 3GPP-WLAN interworking에서 UE 개시 터널 설정을 위한 효율적인 메커니즘을 제안한다. 제안된 메커니즘은 UE와 3GPP AAA(Authentication, Authorization Accounting) 서버 사이의 인증과 키 일치 과정에서 미리 분배된 비밀키에 기반 한다. 따라서 UE에서 많은 계산을 필요로 하는 모듈러 지수승 연산과 공개키 서명 연산을 피할 수 있다. 또한 제안된 기법은 UE와 PDGW(Packet Data Gateway) 사이에 상호 인증과 세션 키 설정을 제공한다.

• International Journal of Computer Science & Network Security
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• 제21권2호
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• pp.130-141
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• 2021

This paper is in the intersection of software engineering and system engineering, two intimately intertwined disciplines. A dominating theme in this paper is the integral conceptualization of systems at large, as well as an underlying concern with software systems. In the software development life cycle, challenges still exist in translating requirements into a design artifact and then into an implementation (e.g., coding), then validating the results. From our perspective, software engineering requires an integrating paradigm toward a unified modeling orientation. Many methodologies, languages, and tools exist for facilitating system development processes. This paper is a venture into project development. To focus the materials, we concentrate on Harel's novel (and classic) development environment, which integrates a scenario-based engineering object orientation and statecharts through developing a railcar system. The railcar system is used as a detailed sample of translating requirements into a design artifact and then into an implementation, then validating the result. The project is re-cased as a single integrated modeling endeavor to be contrasted with the scenario and statecharts' development. The result of this scheme is an enriched understanding through experimenting with and contrasting various development methods of software projects.

• International Journal of Computer Science & Network Security
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• 제22권1호
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• pp.85-92
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• 2022

In this article, we look at the application of BIM (Building Information Modeling) in sustainable infrastructures. In response to global warming, energy shortages, and environmental degradation, people are trying to build eco-friendly, low-carbon cities and promote eco-friendly homes. A "green" building is the entire life cycle of a building that includes maximizing the conservation of resources (energy, water, land, and materials), protecting the environment, reducing pollution, providing people with healthy, comfortable, and efficient use of space, and establishing harmony between nature and architecture. In the field of ecological and sustainable buildings, BIM modeling can be integrated into buildings with analog energy, air flow analysis, and solar building ecosystems. Using BIM technologies, you can reduce the amount of waste and improve the quality of construction. These technologies create "visualization" of digital building models through multidimensional digital design solutions that provide" modeling and analysis "of Scientific Collaboration Platforms for designers, architects, utility engineers, developers, and even end users. Moreover, BIM helps them use three-dimensional digital models in project design and construction and operational management.

• International Journal of Computer Science & Network Security
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• 제21권11호
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• pp.216-222
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• 2021

Advances in technology have given educators a tool to empower them to assist with developing the best possible human resources. Teachers at universities prefer to use more modern technological advances to help them educate their students. This opens up a necessity to research the capabilities of cloud-based learning services so that educational solutions can be found among the available options. Based on that, this essay looks at models and levels of deployment for the e-learning cloud architecture in the education system. A project involving educators explores whether gement Systems (LMS) can function well in a collaborative remote learning environment. The study was performed on how Blackboard was being used by a public institution and included research on cloud computing. This test examined how Blackboard Learn performs as a teaching tool and featured 60 participants. It is evident from the completed research that computers are beneficial to student education, especially in improving how schools administer lessons. Convenient tools for processing educational content are included as well as effective organizational strategies for educational processes and better ways to monitor and manage knowledge. In addition, this project's conclusions help highlight the advantages of rolling out cloud-based e-learning in higher educational institutions, which are responsible for creating the integrated educational product. The study showed that a shift to cloud computing can bring progress to educational material and substantial improvement to student academic outcomes, which is related to the increased use of better learning tools and methods.

• International Journal of Computer Science & Network Security
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• 제22권3호
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• pp.344-354
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• 2022

Ombudsmanship is the framework to provide the speedy administrative justice to poor man which is originated in Sweden in the 19^th Century and the modus operandi with modernized arrangement of public grievance redressal. Pakistan has thirteen different Ombudsman Institutions at both Federal and Provincial level with limited public accessibility. This paper presents a collaboration framework for extending the outreach of Ombudsmanship at proverbial doorstep of complainants. This framework has three main components as collaborative arrangements, Proceedings and Resolution of the complaints that increased the public trust. A pilot project titles Swift Complaint Resolution (SCR) was constructed and executed by Federal Ombudsman Secretariat to materialize the concept of speedy redressal of complaints. The SCR project first affirmed the strength of the components of the framework. The concept of SCR was first presented in the Federal Advisory committee for Administrative Justice, which comprised of highest level of the Parliamentarians, Public Officials, NGOs and Civil Society where presented guidelines to be adopted for the free and speedy redressal of grievances at proverbial doorsteps in tehsils and district headquarters ultimately to the extended to the union councils. In SCR, the complaints were decided within 25 days even though the Law permitted 60 days that is itself a record in any judicial /quasi-judicial forum.

• International Journal of Computer Science & Network Security
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• 제22권6호
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• pp.51-56
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• 2022

It is relevant and timely for the existence and prosperity of today's tourism to build up a stock of new abilities and a set of innovations. At present, the tourism industry is experiencing a new stage in its digital transformation. The newest technologies, which are now spreading en masse and one of which is rightfully considered to be blockchain technology, enable tourists to receive tourist services directly from the producers, which not only gives the consumer the opportunity to enjoy higher quality and inexpensive products but also increases the responsibility of the producer. The article analyzes research literature on the possibility of using blockchain technology in the tourism industry. Based on an expert survey, the main problems, prospects, and advantages of the implementation of blockchain technology in the tourism industry are identified. The paper proposes and analyzes an option for the use of blockchain technology on the basis of a blockchain project with a mobile app for users and a dedicated website and public API for travel service providers.

• 한국항해항만학회지
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• 제41권3호
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• pp.155-164
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• 2017

유라시아의 지역 내 인프라 연결과 협력에 관하여 많은 국가들이 다양한 정책을 추진하고 있는 가운데 중국은 일대일로 사업을 제시했으며, 60여 개국 이상이 사업에 참여하면서 중국은 유라시아 물류 인프라 개발에서 매우 큰 영향력을 행사하게 될 것으로 예상되고 있다. 본 연구는 사회네트워크 방법론을 통해 주요 철도역에 대한 네트워크를 분석했다. 유라시아 대륙의 대표적 철도노선인 TAR, TEN-T, TRACECA, GMS 경로를 통해 65개 국가, 994개 철도역에 대한 네트워크를 구성했으며, SNA의 측면에서 주요 철도역에 대한 특징을 제시하고, 중국과 전체 유라시아 네트워크를 비교했다. 유라시아 및 중국 네트워크에 대한 분석을 통해 연결중심성과 매개중심성에서 각각 상위 30개 역을 제시했으며, 연결성 측면에서 태국 방콕, 조지아의 트빌리시, 아제르바이젠의 바쿠, 중국의 쿤밍, 루마니아의 부쿠레슈티 등이, 매개성 측면에서 아제르바이젠의 바쿠, 알야트, 중국의 바오지, 투르판, 우즈베키스탄의 카르시, 터키의 카스 등이 높은 순위를 보였다. 또한, 중국 네트워크에서는 쿤밍, 난닝, 거쥬역의 연결성과 바오지, 쿤밍, 란저우역 등의 매개성이 높게 도출되었다. 중국에서 추진하는 일대일로 사업은 유라시아 전체의 인프라 연결 확충을 기본 전제로 하고 있지만, 중국과의 연계성 강화를 위한 인프라 개발에 높은 비중이 예상되며, 이런 관점에서 국제 물류 거점에 대한 연구는 중국 네트워크에서 차지하는 중요성을 병행해서 검토할 필요가 있다.

• 한국철도학회논문집
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• 제9권3호
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• pp.319-324
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• 2006

Studied was a strategy of technology development for railway system in terms of railway network. First, The successful launch of the Korean HST system has not only decreased logistics burden but also significantly transformed the Korean trunk-line railway network, revolutionizing the logistics and technology sectors and reinvigorating the Korean railway industry in one century. Korean railway industry sector is now investing to develop many different types of railway system(G7, Post G7, tilting train...) so that these kinds of various railway system development should be integrated with the National Inter-modal Transportation Network Plan. To secure sufficient capacity that is required by the National Railroad Plan, the railway industry needs to establish mid- and long-term train purchase and operation strategies in compliance with railway construction and operation policies. During a railway construction planning, train operators, based on their train operation strategies, should come up with measures to closely cooperate with project operators from the planning stage through to the opening of a railway system. To be more precise, train operators should establish long-term train procurement plans reflecting both long-term national railroad network plans and plans for each railway line in order to suggest appropriate roles and schedules for each line. Also, based on the long-term railway plan, directions should be decided concerning the research and development of trains in advance.

• Journal of Information Science Theory and Practice
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• 제10권spc호
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• pp.12-24
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• 2022

This study attempted to investigate changes in collaboration structure for each stage of national Research and Development (R&D) in the artificial intelligence (AI) field through analysis of a co-author network for papers written under national R&D projects. For this, author information was extracted from national R&D outcomes in AI from 2014 to 2019. For such R&D outcomes, NTIS (National Science & Technology Information Service) information from the KISTI (Korea Institute of Science and Technology Information) was utilized. In research collaboration in AI, power function structure, in which research efforts are led by some influential researchers, is found. In other words, less than 30 percent is linked to the largest cluster, and a segmented network pattern in which small groups are primarily developed is observed. This means a large research group with high connectivity and a small group are connected with each other, and a sporadic link is found. However, the largest cluster grew larger and denser over time, which means that as research became more intensified, new researchers joined a mainstream network, expanding a scope of collaboration. Such research intensification has expanded the scale of a collaborative researcher group and increased the number of large studies. Instead of maintaining conventional collaborative relationships, in addition, the number of new researchers has risen, forming new relationships over time.

• 정보보호학회논문지
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• 제25권4호
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• pp.829-838
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• 2015

스마트 폰의 보급이 확대됨에 따라 많은 종류의 악성코드가 등장하였다. 이 중 스파이웨어는 기존과 다르게 운영체제가 제공하는 기능을 보안 정책에 따라 사용자의 동의를 정상적으로 획득하여 설치된다. 하지만 사용자가 의도하지 않은 기능을 내포하고 있는 스파이웨어는 기존의 악성코드 감지방법으로 쉽게 잡아내지 못하고 있다. 이러한 상황에서 본 논문은 스파이웨어 중 도청을 감지하는 연구를 진행하였으며, 스파이웨어가 가진 문제를 해결하기 위한 새로운 접근을 통해 도청 감지 모델과 이를 실행하는 어플리케이션을 개발했다. 음성 도청을 판별하기 위해서 각 어플리케이션별 전력 사용량 도출 기능, 모듈별 전력 사용량 도출 기능, 네트워크 사용량 감지를 수행하였다. 전력 사용량 도출을 위한 Open Source Project인 Power Tutor에 네트워크 사용량 감지 기능을 추가하였으며, 여기서 측정 및 수집된 데이터를 알고리즘을 거쳐 도청 위험도를 판별했다. 또한 이 논문에서 구축된 어플리케이션은 데이터 수집, 데이터 분석, 그리고 위험군 산출을 통해 도청 위험군을 감지한다. 어플리케이션을 스마트 폰에 설치하여 데이터의 측정 및 수집을 진행하였으며, 도청 시뮬레이션을 위해 Vice Application을 Background로 하여 사용하였다.