• 한국IT서비스학회지
• /
• 제6권3호
• /
• pp.209-224
• /
• 2007

Currently, the world has experienced a mass exodus of workforce from the manufacturing industry to service related industry. In addition, the changes of industry structure toward service industry have been gradually accelerated. We have felt that it is time to conduct researches about IT service systematizing and discovering the essence of service itself with scientific and synthetic ways based on Service Science. For Service Science researchers, service identification is regarded as a difficult activity when they contact it for the first time and they want to apply it real environment. In reality, there exist mismatches between business and IT service to identify service since service is identified from the business point of view in Service Science area and it is identified from the technical point of view in IT service area. In this paper, we have conducted researches about service identification placed on the first priority and regarded as difficult area in service-oriented business area. To lessen aforementioned difficulties, we propose procedures and methods for extracting and identifying service in the viewpoint of business process. We conducted case study and comparison with existing researches to verify the applicability and the excellence of our proposal.

• 한국토양동물학회지
• /
• 제5권1호
• /
• pp.33-37
• /
• 2000

안동대학교 자연과학대학 선충실에 보관되어 있는 표본을 동정한 결과 한국 미기록중인 Cryphodera coxi로 밝혀져 재기재와 함께 보고한다.

• Journal of Biosystems Engineering
• /
• 제28권3호
• /
• pp.239-244
• /
• 2003

The potential use of ultrasonic technique for firmness measurement of apples was evaluated. Mechanical properties(bioyield deformation, bioyield strength, rupture deformation, ultimate strength, and elastic modulus) and ultrasonic parameters (ultrasonic velocity, attenuation coefficient and the first peak frequency) of the apple flesh during the storage time were measured and analyzed. Ultrasonic parameters were determined from the measurement of ultrasonic wave transmission through the apple flesh specimen. Mechanical properties were obtained by universal testing machine. The bioyield strength, rupture strength, elastic modulus, ultrasonic velocity, and the first peak frequency of the apple flesh decreased with the storage time. The bioyield deformation, rupture deformation, and ultrasonic attenuation coefficient increased with the storage time. The correlation analysis between ultrasonic parameters and mechanical properties and the storage time was performed. The high correlations were found between the storage time and the ultrasonic parameters, and these relationships seem to be useful for determining the firmness of the apple flesh.

• 융합보안논문지
• /
• 제3권3호
• /
• pp.51-57
• /
• 2003

실시간 DBMS는 제한된 시간내에 사용자가 처리를 요청한 데이터를 가장 빠르고 안전하게 보관, 조작, 제어하는 기능을 제공해야 한다[3]. 이러한 실시간 제어 및 조작 기능을 담당하기 위하여, 실시간 DBMS 내에서 수행되는 트랜잭션에 대한 처리 과정의 상세 기록(로그)이 매우 중요하다. 본 논문에서는 이러한 기록을 기반으로 트랜잭션 로그에 대한 새로운 회복 기능을 제안한다. 본 회복 방안은 기본적으로 LIFO(Last-In-First-Out) 의 개념을 사용하였다. 제안하는 방법은 같은 속성을 가진, 연속적인 트랜잭션 로그를 효율적으로 기록, 처리 할 수 있는 방안이 될 것이다.

• Animal Systematics, Evolution and Diversity
• /
• 제27권2호
• /
• pp.191-196
• /
• 2011

Two pilumnid species, Echinoecus nipponicus and Zehntneriana amakusae, are described and illustrated from Jejudo Island, southern Korea. These species are recorded for the first time in Korea, and Z. amakusae is the sole representative of the subfamily Rhizopinae of the family Pilumnidae.

• Journal of Species Research
• /
• 제6권3호
• /
• pp.291-294
• /
• 2017

Two fungivorous Korean erotylid beetles-Triplax ainonia Lewis, 1887 and Triplax nagaoi Nakane, 1977 in the tribe Tritomini-were recorded for the first time from Korea. All Korean Triplax members are associated with the fruiting bodies of higher fungi and fungus-grown bark. Re-description, key to the species of Korean Triplax, photographs of adults, and line drawings of diagnostic characters and host fungi records are provided.

• International Journal of Control, Automation, and Systems
• /
• 제5권1호
• /
• pp.79-85
• /
• 2007

In this paper, a real-coded genetic algorithm is proposed for identification of time delay systems from step responses. FOPDT(First-Order Plus Dead-Time) and SOPDT(Second-Order Plus Dead-Time) systems, which are the most useful processes in this field, but are difficult for system identification because of a long dead-time problem and a model mismatch problem. Genetic algorithms have been successfully applied to a variety of complex optimization problems where other techniques have often failed. Thus, the modified crossover operator of a real-code genetic algorithm is proposed to effectively search the system parameters. The proposed method, using a real-coding genetic algorithm, shows better performance characteristics when compared to the usual area-based identification method and the directed identification method that uses step responses.

• 한국운동역학회지
• /
• 제15권4호
• /
• pp.169-179
• /
• 2005

In the 500m short track speed skating, the matter of who reaches the first corner first can important factor since each competitor races with all speed from the start to the first line. A filed study was attempted to kinematical estimation six female foreign skaters, who participated in the 500m female final round competition, and two Korea skates during the World Short track Skating Championship. The three dimensional motion analysis with DLT method was executed using four video cameras for analyzing the actual competition situation. In point of analyzing the actual competition situation, it is expected that skaters and coaches the effective informations, and the following conclusions are drawn; The elapsed time by phase in start motion of the foreign skaters appeared shorter those of Korea skaters, so the start training of Korea skaters should be strengthed. Also the displacement of C.G in the foreign skaters appeared shorter displacement than those of Korea skaters. Especially in the starting position, the foreign skaters are superior to Korea skaters in displacement of first(left) and next following stroke(right). The velocity of C.G and maximum velocity of skate blade of foreign skaters art faster than those of Korea skaters. And the foreign skaters show the superior early velocity change. Both of leaning body angle, and left and knee angle of the foreign skaters lead to positive point of having the propulsive force in the early starting position. Observing in the most prominent feature of foreign and Korea skaters in start phase, foreign skaters skate quickly the third stroke. These features of Korea skaters would appear disadvantage of location selection in entering the coner course.

• Journal of the Optical Society of Korea
• /
• 제10권4호
• /
• pp.174-177
• /
• 2006

We propose a new technique to minimize gain-transient time of wavelength-division-multiplexing (WDM) signals in erbium-doped fiber amplifiers (EDFA) in channel add/drop networks. We have dramatically reduced the gain-transient time to less than $3{\mu}sec$ by applying, for the first time to our knowledge, a disturbance observer with a proportional/integral/differential (PID) controller to the control of EDFA gain. The $3{\mu}sec$ gain-transient time is the fastest one ever reported and it is approximately less than 1.5% of $200{\mu}sec$ gain-transient time of commercially available EDFAs for WDM networks. We have demonstrated the superiority of the new technique by performing the simulation with a numerical modeling software package such as the $Optsim^{TM}$.

• Journal of Microbiology
• /
• 제44권3호
• /
• pp.344-353
• /
• 2006

Symptoms of fowl cholera including orofacial edema, swollen and edematous wattles and combs, and severe respiratory disorders were detected in domestic poultry in two broiler breeder farms: one located in Gyeong-gi Province (October, 2000) and the other in Chung-cheong-nam Province (March, 2001). Gram-negative, bipolar staining bacillus was easily found in a direct smear. The biochemical properties of isolates were examined using a standard diagnosis method, proving that they were 99.7% similar to the Pasteurella multocida (P. multocida: PM), a pathogenic and causative agent of fowl cholera (FC). As a result, an FC outbreak in domestic fowls was confirmed for the first time in Korea since 1942. Because FC was detected in broiler breeder farms for the first time in 59 years at the same time as an FC outbreak was confirmed in wild birds (October, 2000), our concern was focused on whether the PM strains that originated in wild birds were transmitted into poultry forms. The possibility was tracked down by comparing phenotypic and genetic properties between the two types of PM strains. PM strains of chicken origin showed prominent differences from the PM strains of wild bird origin in both phenotypic and genetic properties. An examination of the origin of the wild bird bacteria was conducted, but no evidence has been identified that PM strains from the wild bird were introduced into domestic poultry farms.