• The Journal of Asian Finance, Economics and Business
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• v.7 no.11
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• pp.251-257
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• 2020

The study investigates the role of commodity prices and tax purpose recognition on bitcoin prices. Since the introduction of bitcoin in 2008, emphasis has focused on economists, policy-makers and analysts drastically increasing bitcoin's accessibility and commodity values (Dumitrescu & Firică, 2014). This study employs GARCH and EGARCH from ARCH/GARCH family on daily nature data. We measure the volatile behavior of bitcoin by employing auto-regressive conditional heteroscedasticity model with the aim to explore the relationship between major commodities and bitcoin volatility. We focus on major commodities like gold, silver, platinum, and crude oil to be regressed with bitcoin. The daily prices of commodities were retrieved from www.investing.com and bitcoin prices from www.coindesk.com for the period from 29April 2013 to 16 October 2018. Results confirmed the currency's long-term volatile behavior, which is due to its composition and market dynamics, whereas the existence of asymmetric information effect is not confirmed. Tax recognition by other countries may in future help in controlling the volatility as bitcoin is not a country-specific security. But, only silver impacts on volatility in comparison to oil prices and platinum, which is due to its similar features with gold. Eventually, bitcoin can be used for risk diversification and money making.

• Journal of the Korean housing association
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• v.22 no.3
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• pp.123-134
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• 2011

'Sohawjang' is the first apartment house built in Busan the modern period, 1944. 'Sohawjang' needs to be apprised its value as an very important object of study with architectural and dwelling historic meaning because multi-family houses built in Japanese Rule Era that now exist in Korea are very rare. Thus, this study attempted to leave records to archive by conducting face to face interviews and surveying on 'Sohawjang' which is seriously in danger of extinction and its original form damage as the first step. Especially, around Korea's Liberation, this study tried to extract transformation characteristics of residential space and cultural differences appeared on differences of occupants having different nationality. Through these results, this study attempted to examine the era of apartment house and transformation characteristics and values of modern dwelling historic dimension according to changes of users appeared in Busan modern period. Through this study, it offers basic data about introduction and transition processes of an apartment house in Korea. It has an meaning of suggestion reference data for original form preservations or regenerations.

• Proceedings of the KIEE Conference
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• 2000.07c
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• pp.1924-1926
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• 2000

This paper deals with the multiresolution analysis of wavelet transform for partial discharge(PD).PD is an electrical discharge that only partically bridges the insulation performance of electrical equipment in high voltage. PD signal is very sensitive and difficult to suppress strong noises such as narrow-band radio frequency noise and random noise. In recently, wavelet transform has become a powerful tool to analysis and process signals in various science and technology fields. In this paper, daubechies family is adopted for the research of the characteristics of PD signals. The results show that the kurtosis is increased with discharge process and skewness is decreased with discharge process, but when PD occured positive range then skewness is increased. Segment 7, 8, 9, 10, 11 values is increased with discharge process, so phase distribution is characterized by 210$\sim$330 ranges.

• Fashion & Textile Research Journal
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• v.5 no.3
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• pp.295-298
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• 2003

The study investigated the effect of multi-functional fabric on the autonomic nervous function and psychological variables of 20 students. The experimental group exhibited lower values in anxiety, depression, fatigue and stress level and higher emotional level. This study reveals that multi-functional fabrics reduced the low frequency/high frequency power ratio of heart rate variability. These results support the multi-functional fabrics increases cardiac parasympathetic tone. In addition, experimental group were found to have lower heart rate compared with controls. This augmented heart rate in experiment provides support for stablizing autonomic nervous system. In conclusion, multi-functional fabrics may stabilize the autonomic nervous system and psychological symptoms.

• The Korean Journal of Malacology
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• v.14 no.1
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• pp.33-40
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• 1998

A horizontal starch gel electrophoresis for enzyme proteins extracted from 2 species of Korean viviparid snails; Cipangopaludina chinensis malleata and C. japonica was carried out in order to elucidate their genetic relationships. A total of 10 enzymes were employed in three different kinds of buffer systems. Two loci from each enzyme of alcohol dehydrogenase, esterase, glucose phosphate isomerase, isocitrate dehydrogenase, iditol dehydrogenase, malate dehydrogenase and peptidase(VL); and only one locus dach from two enzymes, glycerlo-3-phosphate dehydrogenase and phosphoglucomutase were detected; but, four loci from peptidase(LGG) were observed. Most of loci in two viviparid species showed homozygous monomorphic banding patterns and some of them were specific as genetic markers between two different species. However, EST-1, MDH-1, PEP(VL)-1loci showed polymorphic banding patterns. Foru populations of C. chinensis malleata were more closely clustered in a dendrogram within the range of genetic identity values of 0.928-1.00, and these clusters were lineated with C. japonica at the value of 0.355. In summarizing the above results, two viviparid snail species dmployed in this study mostly showed monomorphic enzyme protein banding patterns, and genetic differences specific between two species.

• Clinical and Experimental Reproductive Medicine
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• v.5 no.1_2
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• pp.17-26
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• 1978

The purpose of this study is to explore into the Korean Women's sexual life in terms of sexual behavior, sexual attitudes, and sexual experiences. In recent years, it has been generally recognized in both academic area and general publics that traditional norms, values, and patterns of behavior have been rapidly changing in Korea, thus being replaced by new ones. 1. The prevailing preconception that Korean women are sexwise traditional and conservative seems to be no longer true in the present days. 2. In this country, their sexual behaviors and attitudes at least within their marriage have been already westernized, being very similar to those of western women. 3. Knowledge and information of sexual matters held by Korean women prior to their marriage seems to be very limited, compared to those of western women. 4. It seems that Korean women have developed positive attitudes toward sex education practice in their family.

• Fashion, Industry and Education
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• v.15 no.2
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• pp.36-52
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• 2017

In this study, we tried to understand preschooler clothing trends and identify the purchase behaviors of various consumers, such as grandparents, aunts, uncles, and parents, who are the main consumers of the preschooler clothing market. We conducted in-depth interviews with consumers who were interested in preschooler clothing, purchased it frequently, and bought preschooler clothing within the last three months. Their purchase motivations and purchase behaviors were analyzed through exploratory and inductive analysis. The analysis was conducted by integrating categories into one process centered on core categories through open coding, axial coding, and selective coding. The results of this study included that 1) a variety of clothing purchase behaviors appeared as a central phenomenon, 2) the causal conditions that contributed to this phenomenon were the buyers' childcare experiences, purchase experiences, the personal consumption values of individuals, and income levels, 3) in response to the central phenomenon, the parents' action/interaction strategies were acceptance and rejection of purchased clothing, 4) contextual and Intervening conditions affecting action/interaction strategy were family environment changes, the VIB (Very Important Baby) phenomenon, parents' clothing involvement, and the relationship with the buyers, and acceptance by the users, and 5) as a result of the strategy expressed as acceptance and rejection, various clothing behaviors emerged. In this study, we identified that there are various influencers, apart from parents, involved in children's clothing consumption. Therefore, we need to keep in mind that various purchase behaviors and clothing trends that appear during one's childhood may affect the individual's clothing behavior in the future.

• Korean Journal of Health Education and Promotion
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• v.27 no.2
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• pp.69-78
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• 2010

Objectives: The purpose of this study was to investigate the basic grounds for the policies of health promotion on the elderly by analyzing lifestyle. Methods: This study recruited 500 seniors aged over 65 years participating in exercise programs for the elderly provided by four branch offices of NHIC in Daegu. Results: 'Ideal type' was a group thinking that exercise programs for the elderly made their life healthy and energetic and living a happy life and 'social type' was a group answering that they helped to manage their health condition and to relieve stress and activated relationship with family members and friends to gain self-confidence. ‘Passive type’ and 'lethargic type’ said that the programs did not influence their life overall. Conclusion: Entrance into an aging society has changed values of the elderly. Their lifestyle becomes various and the effect of exercise programs for the elderly was also different according their lifestyle. Therefore, exercise programs considering lifestyles of the elderly will maximize their effect.

• Journal of the Korean Home Economics Association
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• v.39 no.11
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• pp.27-42
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• 2001

This paper reviews researches related with the elderly caregiving, which hale published during the 1990s. After analyzingthe 29 articles in this field, the major findings are as follows: First, the advantageous position in life chances which is consisted of socioeconomic status and resources tends to reduce th burden for the elderly care. The higher in social status, the more resources older adults have, the more advantageous in controlling their relationship with their children and caregivers. Second, values based on familism is more associated with providing caregiving services for their parents than those of filial piety. Third, the tendency that daughter-in-law takes the role of the primary caregiver suggests a possibility of diminishing her enthusiasm, and finally comes to recognize her role as an enforced one, as time goes by. Fourth, cargiving burden affects the diverse aspects of caregiver's way of life. When the lower class elderly has dementia, caregiving stress and hassle have reached at their peak level. For meeting the needs of reducing the burden for the elderly care, this study suggests community- based approach for the elderly care. This approach attempts to share the caregiving burden with local community. To share the burden means that the boundaries of caregivers does not limit family members, but to expand community. This attempt includes a plan that establishes multipurpose community center which provides comprehensive services and care for the aged. The theoretical rationale of this approach are also discussed.

• Journal of the Korean Institute of Electrical and Electronic Material Engineers
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• v.11 no.4
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• pp.274-280
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• 1998

Polycrystalline $Sr_2Nb_2O_7$ ceramics with very high Curie temperature were sintered using the powder derived by the chemical coprecipitation method (CCP). The phase evolution and grain-orientation of sintered samples were examined by XRD, while sintering behavior, dielectric properties and polarization were studied by SEM and ferroelectric tester. Extremely high degree of grain-orientation was observed along the (0k0) direction, which resulted in anisotropic dielectric properties of the sintered samples, with the dielectric constant values approaching those for single crystal. Thin film fabrication of $Sr_2Nb_2O_7$ in the pyroniobate family was also attempted on $SiO_2$/Si(100), Pt/$SiO_2$/Si(100), Pt/Ti/$SiO_2$/Si(100) and Pt/$ZrO_2/SiO_2/Si_2(100)$ substrates, using metalorganic decomposition (MOD) process. Neodecanoate precursor solution was prepared by mixing strontium neodecanoate with niobium neodecanoate synthesized from niobium ethoxide. It was found that $Sr_2Nb_2O_7$ single phase appeared in XRD patterns the samples annealed above $950^{\circ}C$. The effect of substrate type on film microstructure and dielectric properties was observed.