• Journal of the Korean Society for Aeronautical & Space Sciences
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• v.40 no.4
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• pp.300-308
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• 2012

In GPS/INS/barometer navigation system for UAV, two procedures were proposed in order to set three reference parameters for the pressure altitude of QNH or QFE settings, using the navigation data from on-board system alone. These procedures yield required the reference parameters through mathematical process with the altitude and the atmosphere properties measured for a short duration of flight, of which a special pattern is requested according to the selected procedure. Dependency only upon the on-board navigation data can eliminate a requirement for the atmospheric measurement system in the ground support system and can expand a flight boundary to a remote area where the ground support is not available. Especially the procedure with the regression method uses altitude and pressure but temperature to produce the three reference parameters. No need of temperature measurement for the pressure altitude system can simplify the on-board air data system.

• Transactions of Materials Processing
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• v.11 no.8
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• pp.682-690
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• 2002

The formation of adiabatic shearband in tungsten heavy alloys(WHA) was studied in this investigation. Five prismatic specimens were loaded by high velocity impacts and treated as plane strain problems. To find out the effect of particle's volume ratio, specimens containing 81%, 93% and 97% volume percents of tungsten particles were used. Also the effects of particle's geometry and size on the formation of shearband were studied for 81% volume percent alloys by small size particle model, large size particle model and undulated particle models, and the results were discussed.be used to diagnose the causes of necking and fracture in industrial practice and to investigate whether these defects were caused by material property variation, changes in lubrication, or incorrect press settings. In non-axisymmetric deep drawing, three modes of forming regimes are found: draw, stretch, plane strain. The stretch mode for non-axisymmetric deep drawing could be defined when the major and minor strains are positive. The draw mode could be defined when the major strain is positive and minor strain is negative, and plane strain mode could be defined when the major strain is positive and minor strain is zero. Through experiments the draw mode was shown on the wall and flange are one of a drawn cup, while the plane strain and the stretch mode were on the punch head and the punch corner area respectively, We observed that the punch load of elliptical deep drawing was decreased according to increase of die corner radius and the thickness deformation of minor side was more large than major side.

• Journal of Korean Academy of Nursing
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• v.37 no.5
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• pp.801-809
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• 2007

Purpose: This study was aimed at exploring the current status of graduate programs for an advanced practice nurse(APN) to recommend future directions of APN education. Methods: A total of 142 students enrolled in seven APN specialty programs, 67 professors who were involved in APN education, and nine nurse administrators participated in the study. Data was collected by questionnaires and focus group interviews. Results: The current definition of APN was found not to be specific enough to represent expected roles of APN in regards to knowledge, attitudes, roles, and skills. Standard curricula employed regardless of the area of APN specialty, lack of qualified clinical practice settings, as well as prepared instructors were found to be problematic. Conclusion: The following needs to be addressed: 1. redefining of APN roles, 2. tailoring specialty areas of APN, 3. consolidating educational programs, and 4. ensuring APN role models and faculty. Suggesting a CNS role in Korean APN, areas of APN should be rearranged toclarify their roles and educational programs need to be further developed to meet the expectations and quality of APNs. It is necessary to ensure APN's employment in the health care system by laws and policies to perform advanced nursing roles.

• Journal of Korean Home Economics Education Association
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• v.9 no.2
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• pp.69-85
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• 1997

The purpose of this study was to identify the important contents from teachers’, parents’and students’view points based on the sixth Home Economics textbook contents, to apply these results at school settings and to provide the materials as a basis for the next curriculum revision. Subjects were 59 teachers, 253 parents, and 389 students from 3 cities and 5 counties in CholaBukDo. A questionnaire which was made by the researcher was used as an instrument for this study. The results are as follows： Of 32 contents on Family life subarea, all the teachers, the parents and the students put the emphasis on sex such as pregnancy, purity, sex-ethics, etc. This result means that middle-school students emphasized the sexual identity formation and this was also a common concern about adolescents in our society. Of 37 contents of Managing home resource and Consumer life subarea, teachers though the environment pollution is an important subject and parents and students thought finding a method to conserve good environment were more important. This result reflects their concern on the environment. Of 49 contents on Dietary life, teachers and parents emphasized “the importance of nutritive elements”which is basic on their dietary life and students were more interested in “adolescence and growth and development among adolescents’nutritional characteristics and problems”which is more related to their current life. Of 40 contents on Clothing life subarea, while teachers put the emphasis on the method how they can buy ready-made clothes, parents and students wanted them to teach what kind of clothes are suitable for themselves. Of 18 contents on Residing life subarea, teachers emphasized the importance of ventilation for adjusting the room environment and students were more interested in the effective use of the residing space. By finding out what kinds of Home-economics contents are important from the view point of teachers, parents and students, this study can be a useful resource for the next curriculum revision and for selecting contents of a new-coming text book. However, restricted sampling must be considered and further studies which cover the whole area might be needed.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.38 no.3
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• pp.136-148
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• 2015

We analyzed the effect of three different types of inventory systems for saving the total cost using simulation on the system where multiple depots and many retailers disperse on the limited area. Three types of inventory systems are single echelon system with inventory exchange and two-echelon system and the variant two-echelon system. Variant two echelon system is the two-echelon system where the inventory transshipmentsare allowed on every two stage inventory echelons. Inventories kept on every retailer are commonly used for all retailers when certain retailer has stock-out. And when all retailers are stock-out, inventories kept on every depot are commonly used for the retailers whose assigned depots are stock-out. These all three systems are simulated with the constraint of service level on wide range of parameter settings. Simulation results show that cost saving effect appear clear for single echelon system and two-echelon system when shortage cost portion and transportation cost portion becomes large respectively irrespective of depot number. Variant two echelon system seems to be superior to two other systems when transportationcost portion becomes very small. But this superiority is not proved in terms of statistics. So we may conclude that the variant two echelon system may be useless with the higher administrative efforts due to frequent inventory exchange. Also we note that the traditional two echelon system becomes inferior to two other systems in terms of statistics when service level becomes high or when demand variance becomes very large. And inventory integration effect that cost becomes saved when depot number decrease, diminishes when transportation cost or stock-out cost increases irrespective of inventory systems.

• Korea Journal of Hospital Management
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• v.14 no.3
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• pp.83-103
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• 2009

The main objective of this study is to investigate the influence of physician's communication styles and quality, and physician-patient relationship on patient satisfaction for improving physician's communication which is one of factors determining service quality in health care services, and providing the suggestion for building the positive physician-patient relationship. Data were collected from 341 inpatients in 13 general hospitals and university hospitals located in Busan Metropolitan City and Kyeongsang-do area using structured self-administered questionnaires. Major results of the empirical analysis are as follows; First, mutual-opened-cooperative physician-patient relationship, patient's communication receptive attitude, patient-oriented physician's communication style, and quality were significantly varied by respondents' characteristics such as age, consensual, job, and income. Second, empathy, patient's communication receptive attitude, physician-patient relationship, and patient satisfaction were significantly varied by respondents' medical-related conditions. Third, there was a significant correlation between active communication receptive attitude of patient and mutual-opened-cooperative physician-patient relationship. Fourth, patient-oriented physician's communication style and physician-patient relationship were found to have positive influence on total communication quality and effectiveness and empathy facet of communication quality both. Finally, patient-oriented physician's communication style, empathy, active communication receptive attitude of patient, and mutual-opened-cooperative physician-patient relationship were found to have positive influence on patient satisfaction. This research findings suggest that putting emphasis on effective physician's communication and enhancing positive physician-patient relationship are crucial for marketing activities and customer satisfaction management in health care settings.

• KIPS Transactions on Computer and Communication Systems
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• v.5 no.12
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• pp.491-498
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• 2016

Recently leakages of confidential information and internal date have been steadily increasing by using booting technique on portable OS such as Windows PE stored in portable storage devices (USB or CD/DVD etc). This method allows to bypass security software such as USB security or media control solution installed in the target PC, to extract data or insert malicious code by mounting the PC's storage devices after booting up the portable OS. Also this booting method doesn't record a log file such as traces of removable storage devices. Thus it is difficult to identify whether the data are leaked and use trace-back technique. In this paper is to propose method to help facilitate the process of digital forensic investigation or audit of a company by collecting and analyzing BIOS firmware images that record data relating to BIOS settings in flash memory and finding traces of portable storage devices that can be regarded as abnormal events.

• Cross-Cultural Studies
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• v.38
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• pp.215-243
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• 2015

This paper looks at the literary mood of southwestern Russia in the late Russian Empire, while examining the writers of this area and their literary tendencies. Southwestern literature was formed in the late Russian Empire, and prospered centering around Odessa. Because of the uniformity in the Soviet culture, however, it could not stay alive but disappeared in the history of Russian literature. Odessa, the center of southwestern literature was a multiracial region unlike other Russian cities. A unique culture was created, therefore, combining the western European culture and local ethnicity. Jews in Odessa could enter into the Russian society and assimilate naturally. They could utilize their talents as a strength to enrich the Russian culture without giving up their cultural heritage. For example, in lingual aspects, using Yiddish was not against the Russian culture. In addition, it contributed to interesting new coinages and led to efforts among writers to minimize the gap between the two languages. Many Jewish writers showed special interest not only in Yiddish but also in French, German and other languages. Therefore, they took the lead in translating and introducing west classics. As evident in the way Yiddish language was formed, mixing their language with other languages enabled jews to soak their way into other cultures naturally. Their yearning for the Russian and western European cultures, combined with their unique sense of humor, led to generic twists and problematic experiments. From another point of view, it is also unusual that southwestern literature diversified locational settings and heroic characters in literary works. European style heros, appearance of multiracial people, pain or waggery experienced by Jews in their assimilation process, thrilling revenge to unfair violence of Russians, and espiegle swindlers are the new domains that southwestern literature pioneered. In summary, southwestern literature was formed in a heterogeneous cultural climate, which was entirely different from the Russian Empire. In this regard, it was in deviation from the Russian literary tradition. From the Soviet point of view, it existed as a heresy which was against the Russian Empire.

• Physical Therapy Rehabilitation Science
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• v.3 no.2
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• pp.125-133
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• 2014

Objective: The aim of this study is to investigate the effect of patellar taping on balance and gait abilities in chronic stroke patients. Design: Randomized placebo-controlled trial. Methods: Thirty chronic stroke patients who have been diagnosed at least six months or before were recruited from R hospital. These study subjects were randomized to the experimental group (n=15) or placebo group (n=15). In the experimental group, patellar taping was applied while for the placebo group, placebo taping was applied. The Balance System SD was used for measuring dynamic standing balance in these two groups. In addition, the GAITRite (CIR System Inc.) system was utilized for calculating gait performance in these patients. Results: After application of taping, the patellar taping group showed a significant decrease in dynamic standing balance in their sway area (p<0.05). However, in the placebo group, there was no significant difference in dynamic standing balance ability and gait ability before and after application of taping. Comparison of the patellar taping group and placebo group showed significant differences in dynamic standing balance ability and gait performance (p<0.05). Conclusions: From the results of this study, it appears that application of patellar taping in chronic stroke patients significantly improved dynamic standing balance ability and gait ability in these patients. Based on these results, patellar taping is thought to be useful in real clinical settings where there are many chronic patients who are in need of improvement in their balance and gait ability.

• Journal of the Korea Institute of Information Security & Cryptology
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• v.13 no.3
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• pp.101-110
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• 2003

Secure and reliable group communication is an increasingly active research area prompted by the growing popularity of many types of group-oriented and collaborative applications. The central challenge is secure and efficient group key management. While centralized methods are often appropriate for key distribution in large multicast-style groups, many collaborative group settings require distributed key agreement techniques. Most of prior group key agreement protocols have been focused on reducing the computational costs. One exception is STR protocol that optimizes communicational cost. On the other hand, it requires O(n) number of modular exponentiations. In this paper, we propose a new group key agreement protocol that modifies STR protocol by utilizing pairing based cryptography. The resulting protocol reduces computational cost of STR protocol while preserving the communication cost.