• Journal of Industrial Convergence
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• v.4 no.2
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• pp.3-18
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• 2006

The purpose of this study was to investigate the correlation of aesthetics factors and purchasing contribution for cellular phone(CP). and to forecast the developing possibility of the CP market. In order to conduct this study, SKIM-8100, Anycall SCH-V500, and Cyon SV-520 were selected. Then, 20 aesthetics adjectives of the CP were extracted and analyzed by Semantic Defferential(SD) Method. Also, SPSS was used for the statistic methods.

• Proceedings of the PSK Conference
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• 2000.04a
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• pp.115.1-115.1
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• 2000

• Proceedings of the Korean Institute of Intelligent Systems Conference
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• 1993.06a
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• pp.1109-1113
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• 1993

A refuse incineration plant is a complex process, whose multi-variable control problems can not be solved conventionally by deriving an exact mathematical model of the process. The usage of advanced fuzzy technologies within the suitable development methodology is demonstrated by a controller implemented for the refuse incineration plant in Hamburg-Stapelfeld, Germany.

• Korean Journal of Childcare and Education
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• v.8 no.6
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• pp.147-168
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• 2012

The results of our study will help develope the education programs for a child-care teacher. The study was conducted to investigate the job request questionnaire. The subjects of the questionnaire were 257 people who are teachers, directors of child care centers and students. Frequency analysis, t-test, Chi-square, ANOVA, and Sch$\acute{e}$ffe were used to analyze the questionnaire as statistical tools. Firstly, public child care centers positively recruit teachers who graduate from college and consider their ability and sincerity to be the most important factors. Secondly, directors and teachers in public child care centers tend to consider preparing education, advice with child's parents, and managing facility the most important duties. Based on the results, the development of the education program will be focused on the child care field.

• Korean Journal of Social Welfare
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• v.61 no.3
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• pp.255-281
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• 2009

This research purports to reconstruct how the respective historical experiences on the Japanese colonial rule and Korean War have influenced the lifes of the Korean elderly in later years from the biographical context. Nine interviews were conducted using Sch$\ddot{u}$tze's 'autobiographical-narrative interview.' Interview data collected were analyzed following Rosenthal's 'analysis of narrative-biographical interview.' How individual historical experiences have impacted the elderly's lifes mostly indicated a difference in the way they experienced such historical events. While their pro-Japanese activities and direct, historical experiences during the Japanese colonial rule and their direct, historical experiences as veterans of the Korean War have influenced their life as individualized, their indirect, historical experiences on the Japanese colonial rule and Korean War have manifested themselves as a potential life severed from the historical past at the same time. Based on the understanding of how the elderly's individual, historical experiences have exerted an influence on their life, finally, some suggestions were addressed as regards welfare practices for the elderly.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.38B no.11
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• pp.924-933
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• 2013

In this paper, we propose a modeling of the broadcasting in the IEEE 802.11p MAC protocol for the VANET(Vehicular Ad hoc Networks). Due to the fact that the beacon message which is needed for the safety services is shared via broadcasting, the analytical modeling of the broadcasting is crucial for the optimum design of the services. Two characteristics specific to the IEEE 802.11p are reflected in the modeling; the time limited CCH interval caused by the channel switching between the CCH and SCH, and no retransmission of the broadcasted messages. In the proposal, we assumed no restriction on the moment of generation of the beacon messages. We allow the messages to be generated and broadcasted within the whole CCH interval. Simulation results prove the accuracy of the proposed modeling. Noticeable improvements are also observed in terms of the performance indices such as the successful delivery ratio, transmission delay, and the variation of the delay.

• The Korean Journal of Physiology and Pharmacology
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• v.19 no.2
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• pp.89-97
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• 2015

The aim of this study was to investigate the involvement of dopaminergic receptors (DR) in behavioral sensitization, as measured by locomotor activity, and the over-expression of cocaine- and amphetamine-regulated transcript (CART) peptides after repeated administration of cocaine in mice. Repeated administrations of cocaine induced behavioral sensitization and CART over-expression in mice. The levels of striatal CART mRNA were significantly increased on the $3^{rd}$ day. CART peptides were over-expressed on the $5^{th}$ day in the striata of behaviorally sensitized mice. A higher proportion of $CART^+$ cells in the cocaine-treated mice were present in the nucleus accumbens (NAc) shell than in the dorsolateral (DL) part of caudate putamen (CP). The concomitant administration of both $D_1R$ and $D_2R$ antagonists, SCH 23390 ($D_1R$ selective) and raclopride ($D_2R$ selective), blocked cocaine induced-behavioral sensitization, CART over-expression, and cyclic adenosine 5'-monophosphate (cAMP)/ protein kinase A (PKA)/phospho-cAMP response element-binding protein (pCREB) signal pathways. SCH 23390 more predominantly inhibited the locomotor activity, CART over-expression, pCREB and PKA activity than raclopride. Cocaine induced-behavioral sensitization was also attenuated in the both $D_1R$ and $D_2R$ knockout (KO) mice, respectively. CART over-expression and activated cAMP/PKA/pCREB signal pathways were inhibited in the $D_1R$-KO mice, but not in the $D_2R$-KO mice. It is suggested that behavioral sensitization, CART over-expression and activated cAMP/PKA/pCREB signal pathways induced by repeated administration of cocaine could be more predominantly mediated by $D_1R$.

• The Journal of Korean Medicine
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• v.30 no.2
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• pp.104-116
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• 2009

Objectives: This experimental study was designed to show the relationship between kidney qi deficiency and hypoadrenia. A comparative study between Sa-am and local area acupuncture stimulation was conducted. The test results help to show the relationship between kidney qi deficiency and hypoadrenia as well as the recuperation of the patient with the use of VAS, ROM, Sch ber test, ODI and salivary cortisol testing. Methods: 1. Twenty-four adults with chronic low back pain were recruited. Once selected the test population was divided into two different groups. One group was treated only with the use of local area acupuncture and the other with Sa-am acupuncture. 2. At the completion of each acupuncture treatment both groups underwent a VAS, ROM, ODI, $Sch{\ddot{o}}ber$ Test and salivary cortisol test. Results: 1. Both the Sa-am acupuncture group and the local area acupuncture group had statistical significance in VAS decrease and flection ROM increase. 2. Only the Sa-am acupuncture group had statistical significance in extension ROM increase. Only the local area acupuncture group had statistical significance in both lateral flection ROM increase and ODI test. 3. There was statistical significance of correlation between morning salivary cortisol test and adrenal fatigue questionnaire. Conclusions: Both local area acupuncture as well as Sa-am acupuncture treatments were effective for treating lower back pain caused by kidney qi deficiency. In addition, each patients recuperation level can be verified with the results seen from the salivary cortisol test results. The cortisol results suggest a similarity between kidney qi deficiency and hypoadrenia.

• Journal of Korean Society for Atmospheric Environment
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• v.15 no.4
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• pp.417-428
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• 1999

The measurement of VOSCs(volatile organic sulfur compounds) in the air is nowadays a very important environmental research field. It is, however, very difficult because the concentration of the VOSC in ambient air is usually very low and the high reactivity makes it difficult to keep in container without loss of recovery. In this study, sampling method with cryogenic preconcentration is evaluated for analysis of atmospheric VOSC such as $CH_3SH,\;CH_3CH_2SH,\;CH_3SCH_3,\;CS_2,\;CH_3SSCH_3,\;CH_3SCH_2SCHA_3,\;and\;C_2H_5SSC_2H_5$ analyzed by GC-MS or GC-FID. Repeatabilities of measurement accompanied with preconcentration for 3-successive runs were in the range of 0.2~1.0% as a relative standard deviation. Stabilities up to 13 days were measured in 6 L canister and 10 L tedlar bag filled with VOSCs in ppb level. Higher stability was observed in tedlar bag as compared to canister with glass coated inner walls, and thiol compounds show dramatic losses in canister within 2~3 days. It is found that recovery over 70% was obtained in a week for all tested VOSCs when the compounds from ambient air matrix were stored in tedlar bag. It is also found that the stabilities of VOSCs are depending on humidity and coexisting compounds in matrix gas due to sample adsorption onto inner surface and reactivity. The results indicate the possibility and limitations of VOSC analysis in ambient air using container sampling method with cryogenic preconcentration.

• 한국HCI학회:학술대회논문집
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• 2008.02a
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• pp.733-738
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• 2008

Serial Music, introduced by A. Sch nberg, is a one of the important composition techniques. This music style has features of pantonality and atonality, so it generates unique atmosphere of modern music. In this paper, we introduce an method of generating serial music using mathematical algorithm. This method generates music that satisfy the requirement that the number of pitches belonged to each pitch class are exactly same, though the requirement is less strict than Sch nberg's definition. To do this, our method uses space-filling curves traversing the twelve tone matrix, which is constructed by the serial series, its inversion and its transpose. Using these curves, we can generate a music that has all notes in the matrix exactly once and adequate repeatness because of the curve's locality. Result music, therefore, can be more suitable for people that are not familiar with modern music, while maintaining the features of pantonality and atonality. This paper also introduces a method of generating extended serial music that uses serialism of duration and dynamic of notes, using multi-dimensional space-filling curves.