• Journal of Aerospace System Engineering
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• 제15권1호
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• pp.1-6
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• 2021

U.S contains the best technology, man power, and big investment in space. It considers space as not only a science and technology related area, but also as an industry and national security related area. Korea's space policy focuses on the development of space systems such as satellites and launch vehicles. Space policy systems of the two countries are also different, causing some discrepancy in mutual interest when we talk about cooperation with the U.S. This study introduced U.S space policy framework and compared it with Korea's policy. It is meaningful in that we can find an effective way of cooperation between two countries.

• Convergence Security Journal
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• 제17권2호
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• pp.89-100
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• 2017

Last January 2017, Donald Trump was inaugurated as the 45th president of the United States. He actively claimed a priority for the United States, which is referred as America First, during his presidential campaign. However, his political assertions turned out to be as Isolationist in terms of foreign policy. It becomes a serious problem for South Korea because South Korea is solely dependent on the U.S. "Extended Deterrence" of North Korea's nuclear threats. In other words, there will be a higher likelihood for North Korea to misinterpret the relationship between South Korea and the U.S. Due to his foreign policy, there is a possible provocation by North Korea. Therefore, ROK-U.S. Alliance, the model of Asymmetry Alliance in order to prepare for North Korea's nuclear provocation, will be evaluated through America's perspective based on "Autonomy-Security Trade-off Model". For this purpose, this research will evaluate ROK-U.S. Alliance with regards to a threat perception, policy coordination, and a value as an ally. Based on the evaluation, it will deduce tactical implications of South Korea's alliance.

• Journal of Digital Convergence
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• 제10권2호
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• pp.153-159
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• 2012

Now a days, U-healthcare comes into the spotlight as a new business model which combines RFID technology with medical service in the well-being era and IT popularization. U-healthcare service needs a method that can deals with hand-writing, overlap data, forgery and falsification of data, difference between information version that happen in medical process because of graft between RFID technology and u-healthcare. This paper proposes RFID based user certification protocol to protect user's privacy who gets medical service through U-healthcare. In the protocol, secret information of patient does the XOR with the secret key that is created in the hospital to reconsider the stability of security system of U-healthcare and user's data forgery and falsification and privacy and then saves it in the secret key field of patient in DB table. Also, it informs the case of illegal access to certification server and make it approved the access of u-healthcare service by differentiating whether u-healthcare is illegal or not.

• Journal of the Korea Institute of Information and Communication Engineering
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• 제18권5호
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• pp.1087-1095
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• 2014

A recent major development in computer technology is the advent of the wearable computer system that is based on human-centric interface technology trends and ubiquitous computing environments. Wearable computer systems can use the wireless universal serial bus (WUSB) that refers to USB technology that is merged with WiMedia PHY/MAC technical specifications. In this paper, we focus on an integrated system of the wireless USB over the IEEE 802.15.6 wireless body area networks (WBAN) for wireless wearable computer systems supporting U-health services. And a communication structure that can differentiate QoS of U-health WBAN and WUSB traffic with different priorities is proposed for WUSB over IEEE 802.15.6 hierarchical protocol. In our proposal and performance evaluation, throughputs of U-health WBAN and WUSB traffic are analyzed under single and multiple QoS classes to evaluate the effectiveness of proposed QoS differentiating structure in WUSB over IEEE 802.15.6.

• THE INTERNATIONAL COMMERCE & LAW REVIEW
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• 제19권
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• pp.7-31
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• 2003

The governments of almost countries have the rules and procedures that the purchasing entities have to follow, in order to ensure that the best value for money spent is obtained in procuring goods and services. However, there are often some of important problems in their rules relating to government procurement. Namely, almost countries have a variety of discriminatory regulations for foreign suppliers in the government procurement laws with the object of national security, economic welfare, and protection of domestic market from international competition. For this reason, several advanced countries had reached the Plurilateral Agreement on Government Procurement during Tokyo Round(1973-1979) and Uruguay Round(1986-1994). However, the provisions of two agreements do not apply to all products made by the government but only to those made by purchasing entities specified by each member country in its list in the Appendix. Accordingly, the size of goods and services purchased from foreign suppliers were comparatively not large. As we know well, the United States have spent a large amount of money from federal and state government budget. But the portion of procurement from foreign suppliers is still small, compared with the portion of procurement from domestic suppliers. The main reason are that U.S. has applied for long time the so-called Buy American Act to government procurement positively and maintained many kinds of other domestic regulations which have discriminatory provisions for foreign goods and foreign suppliers. On the recognition of these points, this thesis deals with the Buy American Act and other U.S. domestic laws, regional and bilateral, and plurilateral agreements including WTO Agreement on Government Procurement. As a result, the author found that there are several concerns and problems in the U.S. regulations relating to government procurement. It include the provisions on priority procurement of U.S.-produced products, local contents requirements, set-aside procurement from small business, and exclusion of preferential procurement from the developing countries.

• The Journal of Art Theory & Practice
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• 제4호
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• pp.7-32
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• 2006

This study is about the cultural policy related to fine art under the U. S. Military Government in Korea(USAMGIK), from September 8, 1945, to August 15, 1948. Drawing on the previous studies of Korean art history in the 'Liberation Period', this study especially concentrates on intention, attitude and activities of the USAMGIK. Particularly the historical documents, stored at the National Archives at the College Park, Maryland, U.S.A., were valuable to do research on the cultural policy of USAMGIK. The cultural policy was subordinated to the political objectives of occupation that can be summarized to building a stronghold of anti-communism in South Korea. Under the U.S. Military government control, cultural matters were assigned to the Cultural Section, the Bureau of Education, which later turns into the Bureau of Culture, the Department of Education. The Bureau of Culture dealt with matters of the ancient Korean art treasures and of the Korean contemporary art. USAMGIK reopened the Korean National Museum which had been closed by the Japanese since the World War II period. After that, U.S. Department of State sent arts & monuments specialists to South Korea for investigating ancient Korean art and culture. Although some of the destructed art treasures were restored during the occupation, th ere were many negative cases including intentional destruction of historic sites or loot of art treasures by U.S. army. In contrast to their interest in the Korean antiquities, USAMGIK payed little attention to promoting the Korean contemporary artists and their arts. USAMGIK distrusted and suppressed the artists of leftism, while they kept good relations with the pro-American artists and the right-wing artists. In conclusion, the visual-cultural policy of USAMGK was mainly planned and carried out in order to preserve the national interest of the United States. This period produced long-term effects on the fine art and visual culture of South Korea, in terms of institution, policy, and reorganization of art community based on anti-cummunism.

• Korean Journal of Fisheries and Aquatic Sciences
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• 제53권1호
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• pp.83-89
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• 2020

This study provides a detailed morphological description of larvae obtained from Urocampus nanus and Syngnathus schlegeli male brood fish over 20 days of culture in the laboratory. In both species, mating takes place when several males each spread their brood pouch like a wing to attract a female's attention. When the female begins to swim upward, the males follow her and receive her eggs in their brood pouches. Newborn larvae of U. nanus and S. schlegeli had already completed formation of dorsal and caudal fin rays, but not of pectoral fin rays. Pectoral fin rays were completely formed 15 days after release in S. schlegeli and 20 days after release in U. nanus. The ratio of caudal fin length to standard length increased until 8 days and decreased thereafter in S. schlegeli, while in U. nanus this ratio declined continuously after hatching. The larvae of the two species were very similar in external morphology, but well distinguished by the number of dorsal fin rays (15-16 in U. nanus vs. 39-43 in S. schlegeli), the presence of a membrane under the tail (absent in U. nanus vs. present in S. schlegeli), and the presence of melanophores in the dorsal fin (present in U. nanus vs. absent in S. schlegeli). Based on this study, U. nanus appears to be evolutionally more similar to pipefish than to seahorse.

• Korean Journal of Head & Neck Oncology
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• 제15권1호
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• pp.66-69
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• 1999

Background and Objectives: It is critical to distinguish benign from malignant thyroid nodule and to select a patient for surgery. Even though the U/S study dose not make great contribution to diagnose a malignant thyroid nodule, it is widely used in the evaluation of anatomic feature of thyroid. The authors tried to estimate the efficacy of the U/S study in preoperative diagnosis of malignant thyroid nodule. Materials and Method: At the department of General Surgery of Ajou University, 75 patients who were operated after diagnosis with thyroid nodule by U/S study between July 1996 to June 1997 were retrospectively analyzed. By comparing the U/S impression that implies malignant thyroid nodule to FNAC and post-operative pathologic results ware as follows. Results: 1) Absence of cystic change, presence of internal hypoechogenicity, lobulation, calcification, thick and irregular halo, and nodule more than 4cm in diameter on U/S were considered significant statistically for the diagnosis of malignancy(Chi-square test, p<0.05) 2) Presence of internal hypoechogenicity or thick and irregular halo has the validity in Logistic regression analysis. 3) FNAC was done in 65 case. 19 case were malignant, 11 case were suspicious and 46 patients were benign (sensitivity 52.6%, specificity 87%). 4) The findings of U/S which are hypoechogenic and thick and irregular halo show 82% sensitivity and 97% specificity. In combination with the findings of FNAC that imply benign or suspicious lesions, the sensitivity was 100% and the specificity was 97%. Conclusion: This study suggest that the hypoechogenicity and thick and irregular halo on U/S are important information for the diagnosis of thyroid malignancy which were considered benign or suspicious after FNAC.

• Journal of Genetic Medicine
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• 제14권1호
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• pp.1-7
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• 2017

Purpose: The aim of this study was to assess the diagnostic efficacy of noninvasive prenatal screening for trisomy 18 by assessing the levels of unmethylated-maspin (U-maspin) and fetal nuchal translucency (NT) thickness during the first trimester of pregnancy. Materials and Methods: A nested case-control study was conducted using maternal plasma samples collected from 65 pregnant women carrying 11 fetuses with trisomy 18 and 54 normal fetuses. We compared the U-maspin levels, NT thicknesses, or a combination of both in the first trimester between the case and control groups. Results: U-maspin levels and NT thickness were significantly elevated in the first trimester in pregnant women carrying fetuses with trisomy 18 when compared to those carrying normal fetuses (27.2 vs. 6.6 copies/mL, P<0.001 for U-maspin; 5.9 vs. 2.0 mm, P<0.001 for NT). The sensitivities of the U-maspin levels and NT thickness in prenatal screening for fetal trisomy 18 were 90.9% and 90.9%, respectively, with a specificity of 98.1%. The combined U-maspin levels and NT thickness had a sensitivity of 100% in prenatal screening for fetal trisomy 18, with a specificity of 98.1%. Conclusion: A combination of U-maspin levels and NT thickness is highly efficacious for noninvasive prenatal screening of fetal trisomy 18 in the first trimester of pregnancy.

• Journal of Society of Preventive Korean Medicine
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• 제23권1호
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• pp.1-13
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• 2019

Backgrounds : The market of Complementary Alternative Medicine(CAM) in the United State(U.S.) accounts for a large proportion of the global CAM market and has a high growth rate. The recent introduction of Obama Care has brought the change in the health insurance system for CAM, and we need to analyze it for its implication to Korean system. Objectives : The purpose of this study is to investigate the current status of acupuncture and chiropractic health insurance in the U.S., and to draw implications for expanding the health insurance coverage for Korean traditional medicine through the comparison between the U.S. and Korean health insurance systems. Methods : We examined the data through the literature search and from the websites of both U.S. government departments and related organizations for the health insurance policy. Based on the collected data, we analyzed its CAM health insurance system in Korea. Results : The acupuncture covered by public health insurance in the U.S. has a limit in the number of treatments and a range of applied diseases compared with Korea. In addition, the practice of acupuncture is not subdivided. However, the chiropractic in the U.S. which also has a limited number of coverage and only three categories of practices are similar to that of Korea. Conclusions : Although the use of CAM by public health insurance is not active in the U.S., but the organizations such as Veterans Health Administration in Vermont is already discussing the use of acupuncture to solve the problem of opioid overuse. Thus Korea also needs to discuss to promote the expansion of the insurance system for CAM.