• 한국정보과학회논문지:소프트웨어및응용
• /
• 제27권2호
• /
• pp.134-147
• /
• 2000

국.내외적으로 소프트웨어 산업이 활성화되었음에도 불구하고, 정보보호 소프트웨어 시스템의 보안성 평가를 포함한 각종 소프트웨어의 품질 평가 업무량 및 평가 비용 산정에 대한 연구는 부족하다. 본 연구에서는 업무분해구조(EWBS) 방법과 기존의 소프트웨어 개발비 산정 방법을 응용하여, 정보보호 시스템의 평가기준(Common Criteria 또는 ISO/IEC 15408)에 따라 정보보호 시스템을 평가 할 때의 평가 업무량과 평가 비용을 산정하는 프로세스와 도구를 제시한다. 본 연구는 정보보호 시스템의 평가 업무량과 평가 비용의 산정에 중심을 두고 있지만, 본 연구의 결과는 기존의 소프트웨어 개발 프로세스 및 제품의 품질 평가시의 평가 업무량 및 평가 비용의 산정에도 응용될 수 있다.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2005년도 추계학술대회 논문집 전력기술부문
• /
• pp.27-29
• /
• 2005

Overhead transmission line design supporting program using high spatial resolution satellite imagery has been developed recently by Korea Power Engineering Company, The developed program, ITSS(Interactive Tower Spotting System) is purposed to improve the application of satellite imagery with the route selection of overhead transmission line. It is composed of spotting the tower position and designing the tower type and height with DEM(Digital Elevation Model) overlaid with satellite Imagery. To review and confirm the function and work efficiency, ITSS was applied to the pilot project of overhead transmission line design.

• 한국IT서비스학회지
• /
• 제6권2호
• /
• pp.81-97
• /
• 2007

Nowadays, IT becomes one of the core competencies in a business. So defining appropriate responsibilities & roles of IT human resources as well as setting the professionalism of them is getting more important. However, there are lots of problems between the supply and the demand of IT human resource. The efforts to arrange workers who have expert knowledge and skill in right place are needed to strengthen national competitiveness. Recently, several leading countries are setting IT skill standards to solve such problems. Therefore, this paper aims at analyzing IT skill standards of developed countries such as ITSS of Japan, SFIA of United Kingdom, and SSIT of USA. By doing comparative analysis of current status of Korea with them, we derive some meaningful insights to develop a national IT skill standard.

• 한국정보처리학회:학술대회논문집
• /
• 한국정보처리학회 2010년도 추계학술발표대회
• /
• pp.1086-1089
• /
• 2010

글로벌 기업은 공통 활용 가능한 IT 요소를 통합/재정립하여 비즈니스 전략을 효과적으로 지원하기 위한 IT Shared Service(이하 ITSS) 체계로 전환하고 있다. IT 자원은 통합되고 업무는 네트워크 기반의 가상화된 서비스로 제공되며, 모바일 중심의 개인 업무 환경으로 전환되고 있다. 본 논문은 상용화된 보안 인증 방식 중 ITSS 운영환경에 적합한 방식을 검토하고, 문제점 및 취약점을 찾아 개선 방안을 도출하고자 한다. 특히, 모바일 환경이 급속도로 확산되는 추세에서 USIM을 활용한 인증 방식이 기업의 보안 요구사항을 충족 시킬 수 있는지 집중 검토하고자 한다.

• Geomechanics and Engineering
• /
• 제10권6호
• /
• pp.775-791
• /
• 2016

The indirect tensile strengths (ITSs) of different cemented paste backfill mixes with different curing times were determined by considering crack initiation and fracture toughness concepts under different loading conditions of steel loading arcs with various contact angles, flat platens and the standard Brazilian test jaw. Because contact area of the ITS test discs developes rapidly and varies in accordance with the deformability, ITSs of curing materials were not found convenient to determine under the loading apparatus with indefinite contact angle. ITS values increasing with an increase in contact angle can be measured to be excessively high because of the high contact angles resulted from the deformable characteristics of the soft paste backfill materials. As a result of the change of deformation characteristics with the change of curing time, discs have different contact conditions causing an important disadvantage to reflect the strength change due to the curing reactions. In addition to the experimental study, finite element analyses were performed on several types of disc models under various loading conditions. As a result, a comparison between all loading conditions was made to determine the best ITSs of the cemented paste backfill materials. Both experimental and numerical analyses concluded that loading arcs with definite contact angles gives better results than those obtained with the other loading apparatus without a definite contact angle. Loading arcs with the contact angle of $15^{\circ}$ was found the most convenient loading apparatus for the typical cemented paste backfill materials, although it should be used carefully considering the failure cracks for a valid test.

• Journal of Trauma and Injury
• /
• 제37권1호
• /
• pp.67-73
• /
• 2024

Purpose: Posttraumatic stress disorder (PTSD) is prevalent and is associated with protracted recovery and worse outcomes after injury. This study compared PTSD prevalence using the PTSD Checklist for DSM-5 (PCL-5) with the prevalence of PTSD risk using the Injured Trauma Survivor Screen (ITSS). Methods: Adult trauma patients at a level I trauma center were screened with the PCL-5 (sample 1) at follow-up visits or using the ITSS as inpatients (sample 2). Results: Sample 1 (n=285) had significantly fewer patients with gunshot wounds than sample 2 (n=45) (8.1% vs. 22.2%, P=0.003), nonsignificantly fewer patients with a fall from a height (17.2% vs. 28.9%, P=0.06), and similar numbers of patients with motor vehicle collision (40.7% vs. 37.8%, P=0.07). Screening was performed at a mean of 154 days following injury for sample 1 versus 7.1 days in sample 2. The mean age of the patients in sample 1 was 45.4 years, and the mean age of those in sample 2 was 46.1 years. The two samples had similar proportions of female patients (38.2% vs. 40.0%, P=0.80). The positive screening rate was 18.9% in sample 1 and 40.0% in sample 2 (P=0.001). For specific mechanisms, the positive rates were as follows: motor vehicle collisions, 17.2% in sample 1 and 17.6% in sample 2 (P>0.999); fall from height, 12.2% in sample 1 and 30.8% in sample 2 (P=0.20); and gunshot wounds, 39.1% in sample 1 and 80.0% in sample 2 (P=0.06). Conclusions: The ITSS was obtained earlier than PCL-5 and may identify PTSD in more orthopedic trauma patients. Differences in the frequency of PTSD may also be related to the screening tool itself, or underlying patient risk factors, such as mechanism of injury, or mental or social health.

• 한국정보과학회논문지:정보통신
• /
• 제29권1호
• /
• pp.86-96
• /
• 2002

H.263을 화상 회의에 이용할 때, 압축율과 마찬가지로 중요한 것이 인코딩과 디코딩 시간이다. 특히 인코딩 시간을 줄이기 위하여 많은 방법들이 제안되었는데, 그 중 한 가지가 인코딩 시간의 상당 부분을 차지하는 움직임 추정에서 복잡도를 감소시키는 방법이다. 이러한 움직임 추정의 복잡도를 규정짓는 요소로 비용 함수, 탐색 영역 인수, 움직임 탐색 알고리즘이 있다. 인코딩 시간을 줄이기 위해서는 이 세 가지의 복잡도를 줄이면 된다. 특히 비용 함수가 H.263 인코딩 시간의 상당 부분을 차지하고 있는데, 이는 비용 함수가 호출되는 횟수가 매우 많기 때문이다. 본 연구에서는 움직임 탐색 알고리즘의 복잡도를 감소시킴으로써 비용함수의 호출 횟수를 줄여 전체 인코딩 시간을 줄이고자 한다. 움직임이 적은 경우 TSS(Three Step Search) 및 NTSS(New TSS)와 비교하여 더욱 빠른 움직임 탐색이 가능하도록 하고, TSS보다 많은 체크포인트를 요구하는 NTSS의 단점을 개선한 ITSS(Improved TSS)를 제안하였다. 그리고 본 알고리즘과 다른 알고리즘의 PSNR, 파일 크기, SAD 호출 횟수 비교로 실험하였다.

• 천문학회보
• /
• 제26권1호
• /
• pp.50.2-50.2
• /
• 2001

• 대한설비공학회:학술대회논문집
• /
• 대한설비공학회 2006년도 하계학술발표대회 논문집
• /
• pp.80-85
• /
• 2006

The peak demand of electricity in summer season mainly comes from the day time cooling loads. Ice thermal Storage System (ITSS) uses off-peak electricity at night time to make ice for the day time cooling. In order to maximize the use of cold storage in ITSS, the estimation of day time cooling load for the building is necessary. In this study, we present a method of cooling load estimation using 5 years of normalized outdoor temperature, relative humidity, and the building construction data. We applied the hourly-based estimation to a general hospital building with relatively less sudden heat exchange and the results are compared with the measured cooling load of the building. The results show that the cooling loads estimation depends on the indoor cooling design temperature of the building.

• 한국통신학회논문지
• /
• 제25권9B호
• /
• pp.1604-1608
• /
• 2000

The three-step search (TSS) algorithm for block motion estimation has been widely used in real-time video coding due to the simplicity of the algorithm significant reduction of computationl cost and good performance. In this paper an improved three-step search (ITS) algorithm is proposed to improve the performance of the TSS algorithm. Simulation results show that in terms of motion compensation errors the proposed ITSS outperforms some popular fast search algorithms while it has the lower computational complexity.