• Journal of Ocean Engineering and Technology
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• v.17 no.2
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• pp.34-39
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• 2003

Recent deepwater offshore structures in the Gulf of Mexico utilize butt welded tubular joints. Application of a welded tubular joint includes tendons, production risers, and steel catenary risers. Fatigue life assessment of these joints becomes more critical, as the structures to which they are attached are allowed to undergo cyclic and sometimes large displacements around an anchored position. Estimation of the fatigue behavior of these tubular members in the design stage is generally condrcted by using S-N curves, as specified in the codeds and standards. Applying the stress concentration factor of the welded structure to the S-N approach often results in a very conservative assessment, because the stress field acting on the tubular has a non-uniform distribution through the thickness. Fatigue life analysis using fracture mechanics has been applied in the design of the catenary risers. This technology enables the engineer to establish proper requirements on weld quality and inspection acceptance criteria to assure satisfactory structural integrity during its design life. It also provides guidance on proper design curves and a methodology for accounting for the effects of non-uniform stress distribution through the wall thickness. Still, there is inconsistency when designing tubular joints using a conventional S-N approach and when specifying weld flaw acceptance criteria using fracture mechanics approach. This study developed fatigue curves that are consistent with both the S-N approach and the fracture mechanics approach. Accounting for non-uniform stress distribution and threshold stress intensity factor were key parameters in relating both approaches. A series of S-N curves, generated from the fracture mechanics approach, were compared to the existing S-N curves. For flat plate butt joint, the S-N curve generated from fracture mechanics matches with the IIW class 100 curve when initial crack depth was 0.5 mm (0.02 ). The new curves for tubular joint agree very well with the experimental results. The comparison also indicated the degree of conservatism built into the API X design curve.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.8
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• pp.3745-3751
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• 2011

In this study flexural strength of damaged concrete beams reinforced by CFS is analysed. Nonlinear section analysis is used to include stress status of tension bars and compressive concrete under loads acting on the original member at the time of strengthening. Calculated flexural strength is compared with Sin-Hong formula which is frequently used in CFS reinforcement design. Nonlinear analysis with variation of the number of strengthening CFS, the ratio of tensile reinforcement, the ratio of section dimension shows that the flexural strength of CFS reinforced beams much depends on reinforcing stage. From the result of this analysis, the flexural strength of CFS reinforced concrete beam is reduced according to the magnitude of pre-loaded service loads.

• The Journal of the Korea Contents Association
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• v.2 no.2
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• pp.42-46
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• 2002

Transfer of much informations or document necessitated between corporation or corporation and customer by fast growth of electronic commerce. So, it is acting by important success urea that make and manage standard of information in electronic commerce. It was work that work that make standard of information electron catalogue system or EDI environment is very difficult before XML comes out and expense costs much. But, it became easy that make standard of information by XML's entrance on the stage that have advantages of SGML and HTML Specially, it is very suitable that electronic commerce inflects XML as field that heterogeneous system exists and standardization is required urgently. That is, XML is big advantage in side that make out side that is and normalized document because store information in standard form that is applied well under heterogeneous system environment because do web environment by basis interface and can be used efficiently to transmit. Treatise that see hereupon could assume beforehand in browser control using XSLT. And using dynamic DLL XML catalogue edit system design and implementation.

• Korea Journal of Hospital Management
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• v.18 no.3
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• pp.106-125
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• 2013

Medical litigation, as a method of resolving medical disputes, has been a huge burden on both the patient and medical institution as it is both costly and time-consuming. The Korea Medical Dispute Mediation and Arbitration Agency has created a dispute mediation process as a method of alternative dispute resolution(ADR). Being in its early stage of implementation, there are still areas requiring improvement as some functions overlap with the Korea Consumer Agency's damage redress and mediation process. This study examines the problems of existing practices in medical litigation while reviewing the mediation process of the two agencies from legal/administrative aspects, and provides an in-depth analysis of the situation through case studies and interviews. While the Korea Medical Dispute Mediation and Arbitration Agency offers many advantages in resolving medical disputes, there must be a distinct division of roles and mutual cooperation with the Korea Consumer Agency. Considering the increasing amount of compensation in medical disputes, medical professionals are being requested to carry medical malpractice insurance. However, this has yet to become a general trend in the medical field despite the growing social demand. As such, the coverage of medical malpractice insurance should be expanded to prevent medical accidents from escalating into medical disputes, thus acting as a social safety net. This study seeks to examine the methods of medical dispute resolution and to allow institutional provisions to reduce the social costs arising from such disputes.

• International Journal of Ocean Engineering and Technology Speciallssue:Selected Papers
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• v.6 no.1
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• pp.69-74
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• 2003

Recent deepwater offshore structures in the Gulf of Mexico utilize butt welded tubular joints. Application of a welded tubular joint includes tendons, production risers, and steel catenary risers. Fatigue life assessment of these joints becomes more critical, as the structures to which they are attached are allowed to undergo cyclic and sometimes large displacements around an anchored position. Estimation of the fatigue behavior of these tubular members in the design stage is generally conducted by using S-N curves, as specified in the codes and standards. Applying the stress concentration factor of the welded structure to the S-N approach often results in a very conservative assessment, because the stress field acting on the tubular has a non-uniform distribution through the thickness. Fatigue life analysis using fracture mechanics has been applied in the design of the catenary risers. This technology enables the engineer to establish proper requirements on weld quality and inspection acceptance criteria to assure satisfactory structural integrity during its design life. It also provides guidance on proper design curves and a methodology for accounting for the effects of non-uniform stress distribution through the wall thickness. Still, there is inconsistency when designing tubular joints using a conventional S-N approach and when specifying weld flaw acceptance criteria using fracture mechanics approach. This study developed fatigue curves that are consistent with both the S-N approach and the fracture mechanics approach. Accounting for non-uniform stress distribution and threshold stress intensity factor were key parameters in relating both approaches. A series of S-N curves, generated from the fracture mechanics approach, were compared to the existing S-N curves. For flat plate butt joint, the S-N curve generated from fracture mechanics matches with the IIW class 100 curve when initial crack depth was 0.5 mm (0.02). The new curves for tubular joint agree very well with the experimental results. The comparison also indicated the degree of conservatism built into the API X design curve.

• Asian-Australasian Journal of Animal Sciences
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• v.18 no.5
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• pp.734-740
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• 2005

The blood samples were collected from dairy cows at the same milking stage. The single-strand conformation polymorphism (PCR-SSCP) method was used to analyze for polymorphism at the 5'flanking region of the hsp70 gene. The mRNA expression levels of HSP70, HSF1, Bcl-2 and Bax-$\alpha$ at different daily-mean-temperature were analyzed by relative quantitative RTPCR. The DNA content, cell phase and the ratio of apoptosis of lymphocytes in peripheral blood of dairy cattle at different daily-meantemperature were determined by FCM. The PCR-SSCP products of primer pair 1 showed polymorphisms and could be divided into four genotypes: aa, ab, ac, cc, with the cis-acting element (CCAAT box) included. Mutations in the hsp70 5'flanking region (468-752 bp) had different effects on mRNA expression of HSP70, HSF1, Bcl-2 and Bax-$\alpha$. The ac genotypic cows showed higher expressions of HSP70mRNA, HSF1mRNA and Bcl-2mRNA/Bax-$\alpha$mRNA and lower ratio of apoptosis. These mutation sites can be used as molecular genetic markers to assist selection for anti-heat stress cows.

• Journal of the Korean Geographical Society
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• v.44 no.3
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• pp.240-259
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• 2009

This study aimed to reveal that a local city was recreated by tourism, and to discover a general process in which the regional identity as a tourist destination was reconstructed. Specifically, firstly, this study suggested that the social construction of cultural tourist destinations was composed of a series of dynamic stages such as 'reinterpretation', 'institutionalization', and 'recognition' conceptually. Secondly, the dynamic stages were analyzed on the ethnographic study of Otaru where the movement of preservation of the historical canal was raised and strategies to attract tourism had been implemented. Thirdly, a main mechanism acting on each stage was examined. In conclusion, it was shown that the region was reinterpreted through the politics of identity and the meaning was institutionalized through political and economic negotiation. Moreover, while being established as a constructed authenticity by politics of memory, the regional identity was embedded in the socio-spatial consciousness constantly.

• The Korean Journal of Community Living Science
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• v.28 no.4
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• pp.625-640
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• 2017

The purpose of this study was to identify the effect of family support and participation in activities on the improvement in interpersonal relationships perceived by rural multicultural and non-multicultural household adolescents and compare the results with the perspective of Sullivan and Bowlby. For this purpose, the data of 403 persons from multicultural households and 348 persons from non-multicultural households were analyzed and several conclusions were drawn. Firstly, the family support variable had the greatest effect on the improvement in interpersonal relationships in both the rural multicultural and non-multicultural household adolescents. Secondly, the number of activities experienced at home significantly affected the improvement in interpersonal relationships in both types of adolescent. The effects of age, number of friends, and number of traditional activities on the improvement in interpersonal relationships differed for each type of household adolescent. And to conclude, the significant factors affecting the interpersonal relationships of the rural adolescents were their family and parents. Therefore, this study supports Bowlby's perspective on adolescents' interpersonal relationships. Based on the results, this study proposed plans to improve the interpersonal relationships of rural adolescents through family support and activity participation. Also, a plan for follow-up studies was suggested.

• Animal cells and systems
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• v.3 no.1
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• pp.29-39
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• 1999

Current data on reproductive characters of endemic and native species are essential to provide a strategy for the conservation of these species. Red pine (Pinus densiflora Sieb. & Zucc.) is one of the dominant, native tree species in Korea, but its reproductive ecology is not well-known. In 1997, the pattern of variation in cone and seed yields contributing to the conservation of declining populations of red pines was examined. Plant height and dbh were measured, and several new cones were collected from each tagged tree after counting the number of cones on each tree. For a subset of cones sampled, the number of fertile scales, the number of seeds at three development stages (early/late aborted, and filled seed), seed wing size, wing color, and individual filled seed mass were measured. The three sites which differed significantly in mean plant size also differed in mean cone and seed production per plant. However further analyses showed that most variation in characters examined occurred among plants within sites, but not among sites. An average of 90% of the potential seeds on the cones aborted at an early developmental stage, demonstrating that early abortion is a major factor affecting the number of filled seeds per cone. Individual seed mass was the only character which exhibited significant variations among sites as well as among trees within sites. Individual seed mass was overall negatively correlated with both the percentage of late abortion and the number of old cones per plant, suggesting that both the past and current years' reproductive activities have caused variations in seed mass. The potential dispersal distance of red pine seeds is quite large. However, wing loading was correlated with seed mass and number in a complex pattern across the sites. Distribution of seeds with varied colored wings differed among sites and among trees within sites. These results suggest that red pines at different sites might possess different strategies to cope with selection pressures acting during the final phase of reproduction, from seed dispersal to establishment. Then the ‘fitted’ red pine trees at each site should be identified and managed to conserve or restore populations.

• Journal of Digital Convergence
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• v.15 no.2
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• pp.319-325
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• 2017

The scenography in terms of directorial viewpoints could suggest the overall vision of scripts rather than providing stage design only. I chose Antonio Buero Vallejo' because he presented the spatial characteristics and images clearly and believe that it could be an exciting challenge to change its original scenography that the playwright suggested. The concept of failed social success and enclosed repeated destiny spaces gave shape to my scenography of stairs. I chose every character in this play had to climb a flight of stairs in order to go outside because a main and sole entrance was located on the top floor. Characters' visual movement which went up in the morning for their dreams, but came down disappointedly due to failure day by day. This concept of scenography became the characters' given circumstances and intended to always affect the characters' acting during the show. Finally, I verified a new scenographic possibility beyond theoretical examination because I applied it to practical production.