• International Journal of Ocean Engineering and Technology Speciallssue:Selected Papers
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• 제6권1호
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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.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• 제77권
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• pp.69-89
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• 2018

The United States of America is one of the most favoring countries in which mandatory pre-arbitration clauses in the form of adhesion contract have been widely recognized and supported by courts and the Federal Arbitration Act. However, after the financial crisis in 2008 and the National Arbitration Forum scandal in 2009, in enacting the Dodd-Frank Wall Street Reform and Consumer Protection Act ('Dodd-Frank Act'), Section 1028(a) of the Act requires the newly created Consumer Financial Protection Bureau (CFPB) to provide Congress with a report on "the use of agreements providing for arbitration of any future dispute between covered persons and consumers". Section 1028(b) also grants the CFPB the authority to "prohibit or impose conditions or limitations on the use of an agreement between a covered person and a consumer for a consumer financial product or service providing for arbitration of any future dispute between the parties, if the Bureau finds that such a prohibition or imposition of conditions or limitations is in the public interest and for the protection of consumers." Pursuant to the Dodd-Frank Act, the CFPB issued a report entitled "2015 Arbitration Study: Report to Congress 2015 (Report)" in March 2015. This paper examines some major legal issues of the Report and makes a few recommendations for Korean financial institutions which entered into the U.S. financial market or has a plan to do so in the near future.

• Journal of the Korea Society of Computer and Information
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• 제17권5호
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• pp.147-155
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• 2012

Police education has shown a pronounced improvement during three eras in American police history. as the Reform Era arrived, the police academy was invented. With it, citizen expectations for the police expanded, and the level of competence exhibited by police grew. After the 1960s came the invention of the FTO and the creation of ongoing, in-service training requirements. in recent years, academics in many places-but by no means everywhere-are taking a more collegial approach to training, aimed especially at COP- style policing and the achievement of genuine professionalism. The Korean police training system is less efficient in education methodology, more inappropriate in the switch system of school education and practice, and poorer in educational environment, among others. Based on my findings, this paper recommends several improvement tips. First, legal stipulations on police training should be integrated and detailed. Second, active participation by preliminary police officers should be emphasized in the class of police training. Third, contents and hours for practice should be emphasized to maximize effects of the "switch system." Fourth, the educational environment of the Academy should be improved.

• Journal of the Korea Society of Computer and Information
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• 제20권4호
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• pp.147-159
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• 2015

This paper is to design smart based collaborative learning model for programming education of fifth graders of elementary school and applies it to a class and analyze its result. Designed learning model is composed of understanding of concept, realization, learning and sharing and it includes step by step learning materials and smart based collaborative learning activities. Scratch traffic light learning materials at leaning stage classify content to be checked in programming by colors and write to support programming internalization of learners. Provision of smart based collaborative learning activities that considered learning conditions of learners makes it possible for beginners to participate in and keep study actively. This study showed that there was statistically significant difference in learners' programming interest and those who achieved over 8 out of 10 points were 60.7% at three stage evaluations for achievement level that applied learning model which suggests that satisfactory achievement level is achieved.

• Proceedings of the KSR Conference
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• 한국철도학회 2007년도 추계학술대회 논문집
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• pp.1541-1550
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• 2007

A subway is one of many public transportation means that contributes toward our society including seoul and offering of its service and expression of various information are in need due to users high demand. And there are various class of users. For that reason an optical communication network in the general contorl center and station buildings was installed. Considering the importance of safe operation of subway, optical communication exists to enhance customer satisfaction. Safe operation is essential as its level of reliance accounts for about 95%. this paper will look for ways to promote mutual information interchange and operation know-how with systems of the same kind and sharing a capable of effective operation of systems in place. Optical communication network in the metropolis railroad accepts various kinds of control networks and data networks for train operation. As occasion demands, this paper presents effective application scheme and specialized organization about an optical communication operating system.

• Proceedings of the Korea Contents Association Conference
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• 한국콘텐츠학회 2008년도 춘계 종합학술대회 논문집
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• pp.598-601
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• 2008

The people, who can't deal with urine and feces by themselves because they can't recognize it, deal with urine and feces with help of protector (Or nurse). For the case of urine and feces, disease of ulcerated flesh of hip like unpleasant feeling, pressure sore, humid tetter due to wetness of diaper can be prevented by changing diaper instantly. However, those people can't be possible to express their opinion, so they can't express their opinion on urine and feces or endure sense of shame. So there is a problem which can't check presence of urine and feces instantly. Accordingly, in order to solve this problem, qualitative improvement of nursing service can be generated by developing u-Care product which instantly let know urine and feces to protector (Or nurse) by perceiving automatically, and benefit of welfare on social dependent class like low income old people and solitude old people can be increased by reducing social welfare expense with increment of nursing expense.

• Journal of Auto-vehicle Safety Association
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• 제11권2호
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• pp.6-10
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• 2019

This paper describes effectiveness of accident reduction on vehicles equipped with AEB using accident data occurring in Korea. During the statistical period, we used the number of vehicles which are covered by auto insurance and the number of accidents. To maximize the reduction effect of accidents caused by the driver's carelessness, the analysis was limited to Physical Damage Coverage that covers the cost of repairing or replacing the damaged vehicle caused by the driver's fault. Due to Personal Information Protection Law, it was not capable of comparing the same vehicle using Vehicle Identification Number in this study. Instead of that, we used it as a similar vehicle, so there are limits to the comparison and analysis results. As a result of this study, we have found that the effect of reducing accidents was different depending on the vehicle class, but it was generally concluded that the number of accidents decreased when the vehicle was equipped with an AEB system. Domestic research on the AEB effect of reducing accidents is not active yet. Therefore, it is absolutely essential to analyze the effects according to various conditions such as driver's age, occupation and gender as well as expanding the study models in the future.

• Journal of Chest Surgery
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• 제55권3호
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• pp.233-238
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• 2022

Background: This study investigated the distribution of valve incompetence in patients with chronic venous disease (CVD) and its correlation with the clinical category of the clinical, etiological, anatomical, and pathophysiological (CEAP) classification. Methods: In total, 1,386 limbs with clinically suspected CVD were categorized according to the CEAP classification and consecutively underwent duplex ultrasonography between April 2017 and December 2020. Results: There were 362 limbs in male patients and 1,024 limbs in female patients. The limbs were classified as C0s-C1 (608 limbs, 43.8%), C2 (727 limbs, 52.5%), or C3-C6 (51 limbs, 3.7%). The prevalence of saphenous vein incompetence in CEAP C0s-C1 limbs was 43.6%. The saphenofemoral junction (SFJ) was competent in 37% of CEAP C2-C6 limbs. The CEAP C3-C6 category was not correlated with reflux patterns of the saphenous vein system (Cramer's V=0.07), incompetent SFJ (Cramer's V=0.07), deep vein reflux (Cramer's V=0.03), or the distribution of incompetent segments in the great saphenous vein (GSV) (Cramer's V=0.11). Conclusion: Duplex ultrasonography is necessary to formulate a proper treatment plan for limbs categorized as CEAP C0s-C1. The SFJ was competent in more than one-third of CEAP C2-C6 limbs with GSV reflux; as such, flush ligation of the GSV may be unnecessary in these patients. The CEAP C3-C6 category showed no correlations with reflux patterns of the saphenous vein system, SFJ reflux, deep vein reflux, or the distribution of incompetent segments in the GSV.

• Korean Journal of Clinical Pharmacy
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• 제32권4호
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• pp.321-327
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• 2022

Background: To implement medication management service in Korean nursing home (NH), medication review tool for residents in Korean long-term care facilities was developed. This prospective pilot study aimed to verify the applicability of this newly developed tool and to evaluate the drug related problems (DRPs) identified by pharmacists' medication review in NH setting. Methods: This study was carried out in two NHs in Korea. The elderly residents (65 or older) using 5 or more medications were eligible. Pharmacists conducted medication review and identified the DRPs and potentially inappropriate medications (PIMs) based on the newly developed tool. Results: Among 43 NH residents, 27 residents agreed to participate. The median age was 87 and about 55.6% of them were taking 10 or more medications. Pharmacists identified a total of 37 PIMs in 18 NH residents (66.7%) and 54 DRPs in 22 residents (81.5%). The most frequent PIM was general-PIM (26 cases) followed by PIM under specific diseases or conditions (7 cases). Out of 77 items contained in the tool, 15 items were detected in study participants. 'Continued use or regular daily use of hypnotics' was the most highly detected item (9 cases) followed by 'multiple prescriptions within each class of hypnotics/sedatives' (5 cases). Among 54 DRPs identified, pharmacist intervened 39 cases (72.2%) and interventions were accepted in 18 cases (46.1%). Conclusion: This pilot study demonstrated that newly developed tool is feasible for the nursing home residents. However, further studies with larger population are warranted.

• Proceedings of the KSRS Conference
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• 대한원격탐사학회 2006년도 Proceedings of ISRS 2006 PORSEC Volume II
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• pp.570-573
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• 2006

College GIS and remote sensing education usually consists of commercial software packages implementations in the classroom. Computer programming is quite important when college graduates work in private or public sectors relevant with GIS and remote sensing implementations. The objective of this paper was to develop a valley management system which implements GIS and remote sensing as the key components for education. The Valley Authority is entitled with water resource protection for sustainable drinking water supply of the second largest city in Taiwan. The test area consists of three different government agencies, Forest Service, EPA, and Water Resource Agency. Materials were provided by the Valley Authority in ArcGIS file format. MapObjects have made the GIS development process much easier. Remote sensing with image manipulation functions were provided by computer programming with Visual Baisc.NET and Visual C#.NET. Attributes inquiry are performed by these two computer languages as well. ArcGIS and ArcPad are also used for simple GIS manipulations of the test area. Comparison between DIY and commercial GIS can be made by college students. Functions provided by the developed valley management system depending on how many map layers have been used and what types of MapObjects components have been used. Computer programming experience is not essential but can be helpful for a college student. The whole process is a step-by-step sequence which college students can modify to depict their capability in GIS and remote sensing. The development process has gone through one semester, three hours every week in 18 weeks. College students enrolled in this class entitled with GIS showed remarkable progresses both in GIS and remote sensing.