• 한국항행학회논문지
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• 제16권1호
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• pp.103-108
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• 2012

항공응급의료 환경에서 기본적인 서비스 모델은 응급구조헬기 내에 장착된 각종 의료장비들로부터 게이트웨이로 수집된 환자 개인건강정보들을 최종 목적지인 후송 병원에 전송하는 과정이라 볼 수 있다. 본 논문에서는 이 과정에서 의료장비에서 게이트웨이로 환자개인정보를 전송시 가장 안전한 전송방식에 대해 고찰하고자 한다. 또한 국제 표준인 ISO/IEEE 11073을 기본 모델로 하여 기존에 나와있는 여러 전송 방식들 중 항공응급의료 환경에 가장 적합한 보안 전송 방식을 비교 분석하여 그 대안을 제시하고자 한다.

• The Journal of Asian Finance, Economics and Business
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• 제7권5호
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• pp.185-194
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• 2020

The study aims to identify and measure factors affecting the perception of the selling price of luxury apartments in Hanoi. We conducted a questionnaire consisting of 29 observation variables with a 5-point Likert scale. Independent variables were measured from 1 "without effect" to 5 "strongly". Based on the desk review and results of interviews, a total of 500 questionnaires were sent to research participants for collection; 458 of them met standard and were subject to be analyzed. This study employs Cronbach's Alpha test, and regression model. The results of Exploratory Factor Analysis (EFA) and Multiple Regression Analysis (MRA) identify five main determinants influencing the perception of the selling price of luxury apartments in Hanoi, including Physical characteristics of a luxury apartment (PC); Location and position of an apartment (LP); Surrounding Area (SA); Quality of service provided by managers; (QS) and Demographics factor (DF). Based on the findings, some recommendations have been proposed to help the firm leaders design appropriate personnel policies for creating better price satisfaction for customers in the future. On this basis, the authors propose a number of recommendations to improve the quality of luxury apartments, thereby contributing to the development of the market for luxury apartments in Hanoi.

• 인터넷정보학회논문지
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• 제5권1호
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• pp.33-39
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• 2004

정보시스템 개발 프로젝트의 효율적이고 효과적인 관리를 위한 국내 실정에 맞는 CMM 기준 프로젝트관리와 정보시스템 감리 항목등과 분석도구가 요구되고 있다. 이 논문에서는 CMM을 기준하여 각 프로세스별 수행결과를 정량적으로 측정하여 해당 수치의 목표범위 내 관리가 가능하게하기 위해 gap 분석 및 평가를 반복해서 수행하여 품질관리, 생산관리, 원가관리, 지식의 통합관리를 가능하게 하여 정보화 기반의 지식 경영을 강화하고, 정보의 고급화, 차별화를 통해 고객 서비스를 강화하고, 프로세스 최적화를 통해 업무효율을 향상시키고 조직의 자발적 노력을 통해 조직 성숙도를 지속적으로 향상시키기 위한 조직 내 정보능력 측정에 있어 4단계 수준에 도달하기 위한 관리 및 감리 항목을 설정하고, 국내 5전문 업체에 적용 분석, 평가하는 모델을 제안하였다.

• 디지털융복합연구
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• 제3권2호
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• pp.143-157
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• 2005

Many papers point out that the e-Learning is one of the most important industries, and the effect on other industries can be more powerful than any other business. Therefore, we think about social, cultural, industrial and technological effect of the e-Learning in order to enlarge industry scale as well as educational performances. In many cases of developed countries, various kinds of study have been performed for the e-Learning quality assurance because quality of the e-learning should operate on effective and efficient learning and continuous market development of education industries. The e-Learning quality assurance has import function not only for learning contents reusability like a SCORM and metadata but also for learning system, solution and service operation, so activities for the quality assurance should consider of cultural and tactical approach when it is applied in the e-learning business. In this paper, we present the concept, domain and purpose of the e-Learning quality assurance. Furthermore, this paper proposes the process and methodology in order to make the quality assurance standard model which is consist of 6 phase such as Environment Research, Needs Analysis, Framework, Metrics, Development and Implementation, Evaluation and Feedback through the analysis and comparison of pre-studied worldwide quality control, management and assurance documents.

• 대한인간공학회지
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• 제27권1호
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• pp.29-35
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• 2008

An estimated 1 billion mobile phone were sold globally in the year 2006. In Korea, people watch television 3.17 hours in a day. Television isn't what it used to be. Digital TV provides both interactivity and high definition. Mobile phone also transferred from 2G to 3G or 3.5G. This means the complexity of TV and mobile phone is increased, design of user interface is more difficult. Unlike the personal computer industry, TV and mobile phone industries have no standard user interface. A comparative study for user interface between TV and mobile phone is studied. User, task, system are analyzed in requirement analysis. User interface model and interaction are also analyzed between TV and mobile phone. This study provides some insights for user interface design. First, the UI designer have to consider another products because one user using one product at the same time using another products. Experience for one product affects that for another product. Second, TV and mobile phone show very similar pattern, especially interaction task and input interaction. Third, there are not sometimes optimized experience between service operator and device manufacturer. Cooperative design between them is required.

• 한국안전학회지
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• 제20권4호
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• pp.63-70
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• 2005

It has been used so many kinds of architectural materials and interior products in current building construction, and use of composite architectural materials is increasing with the development of chemical technology. As the green architecture has become the center of public interest, much effort is conducted in advanced countries on the LCA point of view, such as restriction of architectural materials that emitting pollution substances, developing of Non-Toxic architectural materials, and recycling of used materials, etc. with the cooperation of related organizations, material manufacture companies, and construction companies. Because the kinds of materials to be used in building constructions are so various, there might be some possibility of personal and subjective choice at the time of materials selection resulting the missing the requirements of building components and the choice of harmful materials to human. One way to resolve the material problem is to present the green architectural materials which coincide with the quality performance at service and not harmful to man and nature. At this point of view, this study aims to develop the material classification model by investigating the major labelling system about green architectural materials in both domestic and abroad and to implement an efficient material selection system by making a powerful database of environmental standard and quality basis of building requirements.

• 한국정보통신학회논문지
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• 제10권6호
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• pp.1070-1075
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• 2006

TETRA 시스템에서는 Challenge-response 프로토콜에 의해 단말기와 인증 센터간에 사전에 공유된 인증키가 일치하는지를 확인하는 인증 서비스를 제공함으로써 인가된 단말기만 망에 접속하도록 하고 있다. 그러나 TETRA 표준 인증 프로토콜은 단말기 식별자인 ISSI(Individual Short Subscriber Identity)가 복제된 단말기의 망 접속은 차단할 수 있지만, ISSI와 인증키가 모두 복제된 경우 복제단말기의 불법 사용을 막을 수 없는 취약점이 존재한다. 본 논문에서는 TETRA 표준인 ETSI규격에서 정의하고 있는 인증 프로토콜을 간략히 설명하고 인증 과정에서 사용되는 인증키의 생성/분배/주입 모델을 설명 한 후, 인증키가 인증 센터로 전달되는 과정에서 노출되었을 경우 발생할 수 있는 복제단말기의 위협을 분석한다. 마지막으로 ISSI와 인증키가 복제된 단말기의 망 접속을 차단할 수 있는 새로운 인증 프로토콜을 제안한다.

• 대한음성학회지:말소리
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• 제61호
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• pp.75-86
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• 2007

In this paper, we propose a scalable audio coder, which has a variable bandwidth from the narrowband speech bandwidth to the audio bandwidth and also has a bit-rate from 8 to 320 kbits/s, in order to cope with the quality of service(QoS) according to the network load. First of all, the proposed scalable coder splits bandwidth of the input audio into narrowband up to around 4 kHz and above. Next, the narrowband signals are compressed by a speech coding method compatible to an existing standard speech coder such as G.729, and the other signals whose bandwidth is above the narrowband are compressed on the basis of a psychoacoustic model. It is shown from the objective quality tests using the signal-to-noise ratio(SNR) and the perceptual evaluation of audio quality(PEAQ) that the proposed scalable audio coder provides a comparable quality to the MPEG-1 Layer III (MP3) audio coder.

• International Journal of Knowledge Content Development & Technology
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• 제9권1호
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• pp.81-108
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• 2019

This research has investigated the perceptions of subject specialization services and the opinions of students majoring in library and information science preparing for librarianship, librarians operating in the field, and library directors on the status and ways of nurturing subject specialization for librarians, among others. To this end, based on the results of previous research and the survey questionnaire analysis, we have presented a policy to train subject librarians. First, we have proposed a plan for systematizing the current educational system within the department of library and information science. We have also suggested ways to secure subject expertise based on curriculum management, minor programs, multi-major programs, and interdisciplinary major programs based on the standard curriculum model. Second, we have presented a subject specialization educational system for field librarians, and further suggested details for the development of an educational program that can help build subject expertise and the operation of educational methods as well as the personnel in charge of implementing the educational programs. Third, we have proposed institutionalization of the qualifications of the subject librarian where the qualification requirements have been organized considering academic background, major program, library career, and career experience in the subject specialization service, further suggesting the implementation and maintenance of the system.

• 아태비즈니스연구
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• 제13권3호
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• pp.389-400
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• 2022

Purpose - This study empirically analyzes the effects of food delivery service use frequency and the proportion of single-person households on the generation of MSW (Municipal Solid Waste). Additionally, the study analyzes MSW increase during the COVID-19 period. Design/methodology/approach - The study uses annual information on MSW and related characteristics of 228 Si, Gun, and Gu, which are administrative districts of Korea, from 2015 to 2020. Panel fixed effect model is employed for estimations. Findings - The study finds that food delivery and single-person household have significant effects only on recyclable and standard garbage bag MSW, respectively, not on all produce types of MSW. Additionally, it is estimated that, during the COVID-19 period, the increasing effect of food delivery is intensified while single-person households diminish its increasing effect. Lastly, the study confirms that the marginal effect on the increasing effect of MSW generation by the number of household members. Research implications or Originality - The estimated results are expected to provide useful information for the related policies. In particular, it is necessary to focus more on recyclable MSW concerning the developing delivery culture, and regarding changes in the family structure, focus more on the number of household members than single-person households.