• Proceedings of the Korean Vacuum Society Conference
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• 2012.08a
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• pp.376-376
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• 2012

Semiconductor nanowires (NWs) are future building block for nano-scale devices. Especially, Ge NWs are fascinated material due to the high electrical conductivity with high carrier mobility. It is strong candidate material for post-CMOS technology. However, thermal stability of Ge NWs are poor than conventional semiconductor material such as Si. Especially, when it reduced size as small as nano-scale it will be melted around CMOS process temperature due to the melting point depression. Recently, Graphene have been intensively interested since it has high carrier mobility with single atomic thickness. In addition, it is chemically very stable due to the $sp^2$ hybridization. Graphene films shows good protecting layer for oxidation resistance and corrosion resistance of metal surface using its chemical properties. Recently, we successfully demonstrated CVD growth of monolayer graphene using Ge catalyst. Using our growth method, we synthesized Ge/graphene core/shell (Ge@G) NW and conducted it for highly thermal stability required devices. We confirm the existence of graphene shell and morphology of NWs using SEM, TEM and Raman spectra. SEM and TEM images clearly show very thin graphene shell. We annealed NWs in vacuum at high temperature. Our results indicated that surface melting phenomena of Ge NWs due to the high surface energy from curvature of NWs start around $550^{\circ}C$ which is $270^{\circ}C$ lower than bulk melting point. When we increases annealing temperature, tip of Ge NWs start to make sphere shape in order to reduce its surface energy. On the contrary, Ge@G NWs prevent surface melting of Ge NWs and no Ge spheres generated. Furthermore, we fabricated filed emission devices using pure Ge NWs and Ge@G NWs. Compare with pure Ge NWs, graphene protected Ge NWs show enhancement of reliability. This growth approach serves a thermal stability enhancement of semiconductor NWs.

• Journal of Oriental Neuropsychiatry
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• v.31 no.2
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• pp.77-88
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• 2020

Objectives: The study evaluated middle-aged women using the Core Seven Emotions Inventory-short form (CSEI-s) followed by a correlation analysis with Menopause Rating Scale (MRS). Methods: In this study, the medical records of 47 women who visited W University Oriental Medicine Hospital and completed the CSEI-s and MRS were evaluated. A total of 47 women were analyzed using SPSS (Statistical Package for the Social Science, IBM, United States of America, Version 23.0). Frequency analysis, descriptive analysis, independent t-test, one-way ANOVA, Scheffe test, and correlation analysis were conducted. Results: 1. Approximately one-third of all subjects were more than cautious expressing joy and fright. 2. According to their educational status, high-school graduates thought they were superior to those with a bachelor's degree or above. 3. Anger was expressed with caution in the group with severe menopausal symptoms. 4. Anger, thought, depression, sorrow, fear, and fright showed a positive correlation with MRS scores. 5. Among premenopausal and postmenopausal women, fright was associated with menopausal symptoms and response by the autonomous nervous system. Conclusions: The results suggest that CSEI-s can be used to measure the psychological symptoms of middle-aged women.

• Journal of the Korean Regional Science Association
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• v.8 no.1
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• pp.119-130
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• 1992

Many of the industrialized countries since the 1970s have been experiencing the change in the industrial structure due to technological development, that is, from Fordism to post-Fordism, or to "flexible production system". Regional development has been undergoing some changes according to the different industrial production systems. During the Fordist mass production period, the manufacturing belt was the core region of the production system. As the system shifts to flexible production system of which characteristics are veritcal disintegration, emphasis for JIT(just-in-time) delivery system, part-time and short-time labor contracts, design-intensive industries, etc, the new system requires the new production core and has produced the new industrial spaces, such as Sunbelt cities, suburbs, small-or medium-sized cities, and non-metropolitan areas. In the perspective of global system, the Fordist production system made th NICs developed, because the mass production required many unskilled and low-wage workers. As the NICs exports of manufactured goods have incredibly expanded during the 1970s, the industrialized countries have become threatened. The industriablized countries have restructured their economies and international policies. Such restructures resulted in the economic depression of the NICs. The investment pattern of the industrialized countries has changed and particularly those industries adopting the Post-Fordism have invested from the NICs to the peripheral areas of their own countries or toward the underdeveloped countries which have much lower wage workers. The investment pattern of the NICs is also undergoing some changes like from metropolitian areas to small or non-metropolitan regions. The regional development since the post-Fordist production is still going on, thus it is not possible to generalize the tendency. That could be a particular phenomenon or a stage in the long-term cycle. But the regional development in the world system since 1980s definitely shows the different pattern.t pattern.

• Maxillofacial Plastic and Reconstructive Surgery
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• v.27 no.6
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• pp.570-574
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• 2005

Keratoacanthoma is a benign, self-limited epithelial lesion that closely resembles Squamous cell carcinoma(SCC). Keratoacanthoma occur primarily exposed skin in male patients over 45 years of ages. although etiology is unknown, sunlight, genetic, and human papillomavirus factor have been considered. in clinical feature, rapid enlargement occurs over 4$\sim$8 weeks, resulting ultimately in a hemispheric, firm, elevated, asymptomatic nodule that contains a central plug of keratin. When fully developed, the keratoacanthoma contains a core of keratin surrounded by a concentric collar of raised skin. Over the next 4$\sim$8 weeks, static lesion persists. Then undergoes spontaneous regression over the next 6$\sim$8weeks period by expulsion of the keratin core with resorption of the mass. In histologic feature, Keratoacanthoma consists of hyperplastic squamous epithelium growing into the underlying connective tissue. The surface is covered by a thickened layer of parakeratin with central plugging. Epithelium cell shows dysplastic features and the margins the normal adjacent epithelium is elevated. The differential diagnosis includes SCC. Keratoacanthoma present as a exophytic lesion with horny keratin occupying a depression on the top of the lesion, persists static period and undergoes rapid growth compared with SCC. Keratoacanthoma is usually treated by surgical excision or curettage of the base, spontaneous regression does not occur in every case. A 60 years old male who present facial lesion visit our hospital and surgical excision was done. Biopsy result was keratoacanthoma. We report case with review of literatures.

• Journal of Oriental Neuropsychiatry
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• v.35 no.2
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• pp.163-175
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• 2024

Objectives: To investigate the relationship between rehabilitation treatment, mental state and resilience of stroke patients undergoing rehabilitation by examining the correlation between The Core Seven Emotions Inventory-Short Form (CSEI-s) and the Korean version of the Connor-Davidson Resilience Scale (K-CD-RISC). Methods: All 104 participants (44 diagnosed with stroke who were receiving rehabilitation and 60 without stroke or psychiatric history) completed the CSEI-s, K-CD-RISC, and Questionnaire for stroke symptoms. All data were analyzed using by Statistical Package for the Social Sciences (SPSS) ver. 27.0. Descriptive statistics, chi-square test, t-test, Mann-Whitney U test, Kruskal-Wallis H test, and Pearson correlation coefficient were used for data analysis. Results: As a result of the CSEI-s, compared to the control group, the stroke group showed significantly lower Joy (喜) scores and significantly higher scores for Depression (憂) and Sorrow (悲). With a morbidity period of 12 months or less, the Thought (思) score was significantly higher. The Fear (恐) score was significantly higher when the rehabilitation was initiation more than 4~8 weeks after than that when the treatment was started immediately. Meanwhile, the K-CD-RISC score was significantly higher when rehabilitation was started immediately. In the stroke group, the K-CD-RISC score was positively correlated with Joy (喜) but negatively correlated with Depression (憂) and Fear (恐). In the control group, K-CD-RSIC showed a positive correlation with Joy (喜) but negative correlations with Depression (憂), Sorrow (悲), and Fear (恐). Conclusions: In addition to early rehabilitation treatment, mental approach through Korean medicine psychotherapy is crucial for enhancing the resilience of stroke patients.

• The Journal of Internal Korean Medicine
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• v.41 no.5
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• pp.892-901
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• 2020

Objective: This study reports the effect of Korean traditional medicine on persistent chemotherapy-induced peripheral neuropathy (CIPN). Methods: The patient was treated with Korean traditional medicine that included acupuncture, moxibustion, and herbal medicine. The effectiveness of the treatment was evaluated by the Quality of Life Questionnaire-Core 30 (QLQ-C30), the Quality of Life Questionnaire Chemotherapy-Induced Peripheral Neuropathy (QLQ-CIPN20), the Medicinae Doctor Anderson Symptom Inventory (MDASI), and a numeral rating scale (NRS). We also used the Beck Depression Inventory (BDI) to evaluate the patient's mood change after relieving the paresthesia. Results: After treatment, the symptoms were improved. Paresthesia decreased 80%p after Korean medicine treatment. Conclusions: According to this study, Korean traditional medicine can be an effective treatment for paresthesia in patients suffering from CIPN over 2 years.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.24 no.3
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• pp.338-345
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• 2000

A model testing has been performed to investigate the flow characteristics of a vortex chamber, which plays a role of a flow switch and passively controls the discharge flow rate. This method of passive flow control is a matter of concern in the design of advanced nuclear reactor systems as an alternative to the active flow control to provide emergency water to the reactor core in case of postulated accidents like LOCA (Loss-Of-Coolant Accident). By changing the inflow direction in the vortex chamber and varying the flow resistance inside the chamber, the vortex chamber can control passively the injection flowrate. Fundamental characteristics such as discharge flow rate and pressure drop of the vortex chamber are measured, and its parametric effects on the performance of the vortex chamber are also systematically investigated.

• Journal of Korean Institute of Industrial Engineers
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• v.37 no.4
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• pp.311-322
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• 2011

The core of this research studies the strategic alliance of airlines, container shipping liners, and port operators that have shown successful results through the recent differentiated strategic Alliance Network, although a difference of scale exists between these firms and the small and mid-sized International Logistics firms, but because of the worldwide traditional Alliance Network of International Logistics firms, HTFN's(High Tech Forwarder Network) half hearted attitude and the small scale alliance of the small and mid-sized International Logistics firms organized in 1998 cannot breakthrough the present strenuous situation. And these results, creating an attempt to save our country's International Logistics Industry which have fallen into depression, suggests an awakening of a new strategy based on specialized nationals innovative IT-which does not exist in the world market-by categorizing our country's small and mid-sized International Logistics firms which are active worldwide.

• Journal of Dental Anesthesia and Pain Medicine
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• v.16 no.1
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• pp.9-15
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• 2016

Programs provided by the Korea Association of Cardiopulmonary Resuscitation include Basic Life Support (BLS), Advanced Cardiac Life Support (ACLS), Pediatric Advanced Life Support (PALS), and Korean Advanced Life Support (KALS). However, programs pertinent to dental care are lacking. Since 2015, related organizations have been attempting to develop a Dental Advanced Life Support (DALS) program, which can meet the needs of the dental environment. Generally, for initial management of emergency situations, basic life support is most important. However, emergencies in young children mostly involve breathing. Therefore, physicians who treat pediatric dental patients should learn PALS. It is necessary for the physician to regularly renew training every two years to be able to immediately implement professional skills in emergency situations. In order to manage emergency situations in the pediatric dental clinic, respiratory support is most important. Therefore, mastering professional PALS, which includes respiratory care and core cases, particularly upper airway obstruction and respiratory depression caused by a respiratory control problem, would be highly desirable for a physician who treats pediatric dental patients. Regular training and renewal training every two years is absolutely necessary to be able to immediately implement professional skills in emergency situations.

• Journal of the Korean Institute of Landscape Architecture
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• v.29 no.2
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• pp.14-21
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• 2001

This study aims to analyze visual structure by evaluating the view from five building sites around An-ap pond, and attempt to determine which site commands the best view and will provide the most active use. The results of this study can be summarized as follows: According to the questionnaire survey of experts on the relations of dominancy-subordination(´chu-jong´), vacancy-solidness(´heo-sil´), sparsity-density(´so-mil´) based on ancient oriental Yin-Yang theory and analysis of visual structure on angle of elevation, depression, and the landscape-component ratio to be seen through five building sites around the west of An-ap pond, building site three was selected as the building site which has the best landscape. Therefore, it is estimated that building site three played the role of core-building site. According to the result of correlation analysis, the greater the increased in the component ratio of sky, mountain ,the greater the degree of harmony within the landscape. As well, the degree of harmony increased when the landscape component ratio of a distant view was greater than that of a near view. Moreover, it was proved that the relationships of ´chu-jong´, ´heo-sil´, ´so-mil´ are correlative, not independent.