• The Journal of Korean Institute of Communications and Information Sciences
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• v.29 no.9C
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• pp.1306-1315
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• 2004

UWB, which is now in a process of being standardized in WPAN communication, has some problems such as difficulty of implementation and interference with existing systems. To overcome these problems we will explain the MIMO structure to alleviate difficulties of implementation. In this paper we propose the UWB transceiver structure using multiband scheme to mitigate narrow band interference from PCS Of WLAN which is widely used these days and analyze the effect of noise and narrow band interference by simulation based on numerical analysis.

• Convergence Security Journal
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• v.21 no.1
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• pp.9-17
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• 2021

Numerous IoT devices are connected to a wireless network environment to collect and transmit data without time and space limitations, but many security vulnerabilities are exposed in these process. But IoT security is not easy to create feasible security standards and device authentication due to differences in the approach or implementation of devices and networks. However, it is clear that the improvement and application of the standard framework for enhancing the security level of the device is the starting point to help the most successful security effect. In this study, we investigate the confidentiality, integrity, availability, and access control implementation plans for IoT devices (which are the basic goals of information security), and standardized security evaluation criteria for IoT devices, and study ways to improve them.

• Korean Journal of Clinical Pharmacy
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• v.27 no.3
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• pp.161-170
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• 2017

Background: There is recent evidence that insulin resistance is responsible for increasing the risk of developing cognitive dysfunction. To systematically review the influence of intranasal insulin treatment on the cognitive function in Alzheimer's disease patients. Methods: Randomized controlled trials comparing the cognitive effects of intranasal insulin therapy in Alzheimer's disease patients with controlled interventions were retrieved from Pubmed, Medline, Embase and Cochrane library. Meta-analysis was conducted on the cognitive measurements with a subgroup analysis by dose, gender and apolipoprotein E allele 4 (ApoE ${\varepsilon}4$) status. Results: Seven randomized controlled trials were eligible for inclusion. Intranasal insulin had a positive influence on the cognitive function as compared to placebo without a statistical significance (standardized mean difference; SMD = 0.109; 95% confidence interval; CI -0.04 to 0.26; P=0.14). In subgroup analysis, a 20 IU dose of intranasal insulin induced a significant improvement in cognitive function (SMD = 0.14; 95% CI 0.05 to 0.24; P=0.004), but 40 IU did not show this effect (SMD = -0.01; 95% CI -0.11 to 0.09; P=0.82). ApoE ${\varepsilon}4$ positive patients showed a significant decline in cognitive function as compared to ApoE ${\varepsilon}4$ positive patients in the control group (SMD = -0.213; 95% CI -0.38 to -0.04; P=0.015). Such an effect was not apparent in ApoE ${\varepsilon}4$ negative patients. Gender had no influence on the cognitive outcomes. Conclusion: The results indicate that intranasal insulin may have beneficial effect in improving the cognitive function in Alzheimer's disease patients.

• Anxiety and mood
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• v.18 no.1
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• pp.10-16
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• 2022

Objective : The present study examined the effectiveness of the mindful self-compassion (MSC) program on anxiety, depression, self-compassion and emotion regulation. Methods : A total of 29 subjects (mean age 27.5±6.5 years, 15 males and 14 females) participated in a standardized 8-week MSC program. The control group consisted of age- and sex-matched twenty participants (mean age 26.0±2.9 years, 11 males and 9 females). All subjects completed self-report measurements at two weeks before and after the MSC program. Results : MSC training improved self-compassion as demonstrated by the significant group x time interaction effects on the total Self-Compassion Scale scores (F[1, 47]=8.324, p<0.01). Regarding the subscale scores, a significant improvement in self-kindness, isolation and mindfulness components of self-compassion was observed after MSC training. A significant group x time interaction was observed on the self-kindness subscale (F[1, 47]=4.664, p<0.05), with a significant main effect of time (F[1, 47]=23.723, p<0.001). The isolation subscale showed a significant group x time interaction (F[1, 47]=8.698, p<0.001). For the mindfulness subscale, there was a significant group x time interaction (F[1, 47]=6.611, p<0.05) and main effect of time (F[1, 47]=6.611, p<0.05). MSC training also improved the acceptance emotion regulation strategy, as demonstrated by the significant group x time interaction in the acceptance subscale scores of the Cognitive Emotion Regulation Questionnaire (F[1, 47]=6.845, p<0.05). Conclusion : MSC training showed efficacy in fostering self-compassion and improving emotion regulation. Thus, this program might be applicable to improve mental health.

• The Journal of Internal Korean Medicine
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• v.39 no.4
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• pp.550-569
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• 2018

Objectives: The purpose of this study was to investigate the effects of herbal medicine treatment for patients with migraine and to suggest research methods for herbal medicine treatment on migraine. Methods: In this study, a search was conducted through several academic sites using a combination of terms '편두통', 'Migraine', '한약', '한약치료', 'Herbal medicine', 'Herbal medicines', 'Herb', 'Traditional Chinese Medicine', and 'TCM'. Randomized controlled trials using herbal medicine treatments for adult patients with migraine were selected. Results: Ultimately, 46 papers were selected and analyzed. A statistically significant improvement was noted in the treatment group in terms of clinical migraine symptoms and other migraine evaluation tools before and after the herbal medicine treatment. Herbal medicines were administered in decoction, pill, and granule formulations. Many kinds of medicinal herbs, such as 解表藥類, 補益藥類, 淸熱藥類, 活血祛瘀藥類, and 平肝藥類, have been used for migraine. Among them, 川芎, belonging to 活血祛瘀藥類, is mentioned 36 times and is the most frequently used medicine. Herbal medicine was used safely for migraine treatment, without major adverse reactions, and the recurrence rate was significantly lower in the treatment group than in the control group. Conclusions: In conclusion, the herbal medicine treatment for patients with migraine showed a statistically significant improvement in 46 papers. Future studies should utilize standardized and objective evaluation tools, along with appropriate experimental design. The relevant articles should be increased to a significant level to verify the effect of herbal medicine treatments on migraine.

• Journal of the Korean GEO-environmental Society
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• v.17 no.3
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• pp.5-12
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• 2016

Stone column is the method that replace soft ground such as weak clay and loose sand with gravel or crushed stone which has relatively high stiffness and low compressive. Stone column increases bearing capacity of the soft ground, reduces settlement, produces ground improvement effect by consolidation drain, and is effective to prevent soil liquefaction in sandy ground during an earthquake. Stone column has been used in many civil works, and has recorded quite a lot of construction achievement internationally, but there is no standardized settlement calculation method yet. Therefore, in this study, the applicability of the existing theoretical equations were evaluated through comparison and analysis to predict a reasonable settlement of the Stone column. Consequently, Hook's law formula was verified to be the most close to numerical analysis.

• Korean Journal of Community Nutrition
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• v.9 no.2
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• pp.225-232
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• 2004

The objective of this study is to investigate how patients satisfaction are affected by satisfaction with the patient menu and differentiated service resulting from QI activities and to evaluate the efficiency of QI activities. In order to improve satisfaction with menus through QI activities, this study strengthened meal round, examined the quantity of food waste produced by patients, diversified one-dish menus and used seasonal food as much as possible to reflect patients ′tastes to the maximum. With regard to cooking, additionally, it strengthened sampling and standardized recipes to maintain the constancy of taste and cooking/seasoning. From July 2003, dining time was changed from 08 : 00 to 07 : 30 for breakfast and from 17 : 30 to 18 : 00 for dinner. Statistical data analyses were completed using the SPSS 11.0 program. The results can be summarized as follows: The goal of QI was to improve food service by raising the score of "Satisfaction with Offered Menus" from 3.49 before QI to 3.55 after QI and differentiating nutrition service at the VIP ward. The score of "Satisfaction with offered menus" after QI was 3.56, and services related to the VIP ward were 7 dishes per meal, meal round once per day and the use of a napkin for a spoon in setting the table. In addition a variety of dishes were used in order to heighten the visual effect. Among the 10 items included on the patient satisfaction questionnaire, 8 items showed higher scores before QI. "Taste of meals" (p ＜ 0.05), "Satisfaction with offered menus" (p ＜ 0.05), "Kindness of meal serving assistants" (p ＜ 0.05) and "Cleanliness of clothes ＆ features" (p ＜0.05) of VIP ward were significantly higher than those of a general ward.

• Journal of the Korean Institute of Landscape Architecture
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• v.43 no.5
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• pp.28-39
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• 2015

The purpose of this study is to analyze users' behavior and facility satisfaction and to suggest the practical solution plans for environmental improvement of trails in Suseong recreation park in Daegu. Therefore, satisfaction factor analysis on trails was carried out based on a field and questionnaire survey in Suseong recreation park. First, from users' behavior, 48% of users visited Suseong recreation park for walking. The greatest response to number of visits was once or twice a week, and average use time per visit was 80.4 minutes. In terms of trails, the greater responses to the number of visits were once(38.1%) or more than 5 times(23.8%), and average use time was 45.4 minutes. According to the results from the analysis of facility satisfaction, management condition, length, slope, and adjacent natural landscape of trails were evaluated at a satisfaction rate higher than 3.4 points. However, water pollution, and number of exits and parking lots were analyzed at a low rate of 2.75 and 2.78 points, respectively. In terms of analyzing determining factors of facility satisfaction for trails, use of facilities, walking convenience, surrounding landscapes, amenities, and noise had a significantly positive effect on satisfaction. In particular, walking convenience was the highest effect factor; its standardized coefficient was 0.533. The findings from this study can contribute to the improvement of the physical environment for trails of Suseong recreation park and provide basic data for plan and maintenance of similar waterside trails.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.9
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• pp.5783-5789
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• 2014

Since 2002, many domestic companies have been certified for ISMS. On the other hand, certification, such as the need for ost-effectiveness evaluation, is not specifically enforced. Therefore, for more than 10 years, the ISMS implementation and certification system has been used for performance and cost effective business management. In this study, a model for analyzing the effect of certification organizations, ISMS development, and an analysis of the effect of a standardized system for the study was prepared. To this end, the existing maintenance organizations ISMS certification survey was conducted through an analysis of the economic effects. ISMS certification continues to expand or maintain the policy for improvement. The survey data collected by the analysis mechanism for the economic effects of CVM was analyzed.

• The Journal of Korean Medicine Ophthalmology and Otolaryngology and Dermatology
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• v.28 no.3
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• pp.114-125
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• 2015

Objectives : The objective of this study was to evaluate the effect of Herbal medicine, extrusion and Hwangryunhaedok-tang Pharmacopuncture therapy for treating Sil-Yol(Excess heat) type acne.Methods : Total of 22 patients with Sil-Yol(Excess heat) type acne were treated with the Herbal medicine(Chungsangbangpoong-tang, Yangkyuksanwha-tang, Hwalhyeolsano-tang, Galgeunhaegi-tang, Daeshihotang) and weekly Hwangryunhaedok-tang Pharmacopuncture & extrusion therpay. By the standardized photography before and after treatment, KASG and survey for patient`s satisfaction, we checked effect of Herbal medicine and Hwangryunhaedok-tang Pharmacopuncture therapy for treating acne.Results : 1. In 22 patients who underwent the Herbal medicine, extrusion and Hwangryunhaedok-tang Pharmacopuncture therapy, there was an significant improvement in KASG. Mean value of KAGS before treatment is 3.59±0.80, mean value of KAGS after treatment is 1.95±65.2. The responses to the survey for satisfaction revealed that 5 patients were very satisfied with their outcomes, 11 patients were satisfied, 5 patients were somewhat satisfied, 1 patient was dissatisfied.Conclusion : In Korean medicine, Herbal medicine and Hwangryunhaedok-tang Pharmacopuncture therpay might be effective method for treating Sil-Yol(Excess heat) type acne.