• Journal of the Korean Society of Food Science and Nutrition
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• v.39 no.8
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• pp.1102-1106
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• 2010

This study was carried out to investigate the effect of ethanol extract from citrus peels (CP-Et) against the alloxan-induced oxidative damage on HIT-T15, Hamster pancreatic $\beta$-cell. Total polyphenol and flavonoid contents in CP-Et were $57.00{\pm}2.91\;mg/g$ and $8.11{\pm}2.83\;mg/g$, respectively. Cell toxicity on HIT-T15 by CP-Et (0.125~0.75 mg/mL) was not observed. CP-Et (0.125 mg/mL) increased cell proliferation rate of HIT-T15, which was treated alloxan ($IC_{50}=11.58\;mM$) (cell viability=$80.52{\pm}3.29%$ of normal cell, p<0.05). In comparison with insulin secretion of oxidative damaged HIT-T15, 1.5 fold ($116.93{\pm}2.11\;{\mu}g/mg$ protein) was increased by treatment CP-Et treatment (0.125 mg/mL) in HIT-T15 (p<0.05). These results showed that CP-Et contribute to repairing cells and improvement of insulin expression on oxidative stress pancreatic $\beta$-cell, and also suggested application of CP-Et as a functional food material for type 2 diabetes.

• Korea Information Processing Society Review
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• v.18 no.3
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• pp.68-75
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• 2011

• Journal of East-West Nursing Research
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• v.28 no.2
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• pp.75-82
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• 2022

Purpose: The aim of the study was to examine the effect of auricular acupressure on low back pain and headaches in nurses. Methods: A open-label randomized controlled trial was used. Thirty-nine nurses with low back pain for more than 3 months participated in this study. Auricular acupressure stickers were applied to the participants's waist, head and Shen men in the experimental group for 2 weeks. The Numeric Rating Scale (NRS), the Visual Analog Scale (VAS), and the Headache Impact Test-6 (HIT-6) were administered to measure participants' pain. Results: The mean differences of the VAS and the HIT-6 were significant in the experimental group at the pre and post-tests. A repeated-measures ANOVA revealed that low back pain and headache measured using NRS in the experimental group decreased significantly compared to the control group at the pre and post-tests over 2 weeks. Conclusion: The results of this study indicated that auricular acupressure could be used as a useful intervention for self-care for nurses with low back pain and headache.

• Proceedings of the KIEE Conference
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• 2009.07a
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• pp.239_240
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• 2009

This paper presents the brief analytical study on 돋 effects of higher impedance transformer(HIT) to reduce distribution system fault current. With the increase of source and load capacity of power system, fault current of D/L is much more increased and, conventional protection equipment-such as sectionalizer and recloser, have to be replaced higher switching capacity. However, this replacements needs a lot of budget to utility. Increase of transformer impedance is can be a countermeasure in practical basis. This paper compares the voltage and fault current magnitude of both cases -%Zt=20% and %Zt2=33.3%(transformer capacity is 75/100MVA). The simulation results show that the steady state voltage of HIT is dropped 5~6% more in peak load, and fault current was decreased about 5kA by high impedance on transformer.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.48 no.3
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• pp.69-75
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• 2011

In this paper, we propose an anycast event driven synchronization mechanism to reduce power overheads. Our proposed mechanism can reduce unnecessary polling operations on SHI(Snoop Hit Invalidate) or SHR(Snoop Hit Read) states. It prevents waisting bandwidth and reduces power overheads on polling operation. Also it decreases transition power of state change compared to broadcast model. Simulation results indicated that the proposed architecture had about 15.3% of power decrease compared to spin-lock model and about 4.7% of power decrease compared to broadcast model. Overall results indicated that proposed synchronization mechanism could increase power efficiency of multi-core system by reducing power overheads.

• Journal of Acupuncture Research
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• v.29 no.5
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• pp.61-74
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• 2012

Objectives : This study is perfomed for preparation of oriental medicine clinical guidelines for drawing up the standards of oriental medicine demonstration and diagnosis classification about the knee pain. Methods : Statistical analysis about Crane's-knee wind(鶴膝風), arthralgia syndrome(痺症), knee injury(膝傷), gout arthritis(痛風), Youk jeol poung(歷節風) classified experts' opinions about knee pain patients by Delphi method is conducted by using oriental medicine diagnosis questionnaire. The result was classified by using linear discriminant analysis(LDA), diagonal linear discriminant analysis(DLDA), diagonal quadratic discriminant analysis(DQDA), K-nearest neighbor classification(KNN), classification and regression trees(CART), support vector machines(SVM). Results : The results are summarized as follows. 1. The result analyzed by using LDA has a hit rate of 81.65% in comparison with the original diagnosis. 2. The result analyzed by using DLDA has a hit rate of 63.3% in comparison with the original diagnosis. 3. The result analyzed by using DQDA has a hit rate of 65.14% in comparison with the original diagnosis. 4. The result analyzed by using KNN has a hit rate of 74.31% in comparison with the original diagnosis. 5. The result analyzed by using CART has a hit rate of 75.23% in comparison with the original diagnosis when the test of selected 13 significant questions based on analysis of variance was performed. 6. The result analyzed by using SVM has a hit rate of 87.16% in comparison with the original diagnosis. Conclusions : Statistical analysis using oriental medicine diagnosis questionnaire on knee pain generally turned out to have a significant result.

• Journal of Industrial Convergence
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• v.18 no.2
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• pp.69-75
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• 2020

Industrial IoT has much interested in wireless mesh networks (WMNs) due to cost effectiveness and coverage. According to the advance in caching technology, WMNs have been researched to overcome the throughput degradation of multihop environment. However, there is few researches of cache power consumption models for WMNs. In particular, a wired line based cache power consumption model in content-centric networks is not still proper to WMNs. In this paper, we split the amount of cache power from the idle power consumption of CPU, and then the cache hit ratio proportional power consumption model (CHR-model) is proposed. The proposed CHR-model provides more accurate power consumption in WMNs, compared with the conventional cache power efficiency based consumption model (CPE-model). The proposed CHR-model can provide a reference model to improve energy-efficient cache operation for Industrial IoT.

• Journal of the Korea Society of Computer and Information
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• v.20 no.2
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• pp.47-54
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• 2015

Emotional reaction of audience can be decided by observing reaction of audience for content. We can use a method to analyze visual data from video camera to detect reaction of audience fast and economically. This paper proposes the method and system to observe audience reaction from visual data of audience and define via neural network. Also we propose a new method to detect automatically an area for audience reaction with face detection to improve a fixed area assignment method which has a limitation not to adapt depending on audiences. Additionally, the evaluation is implemented to show that the proposed method and system is effective. The proposed method showed the performance elevation of 10.5 % (7.75 hit ration) compared to a fixed area assignment method.

• Journal of KIISE:Computer Systems and Theory
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• v.36 no.5
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• pp.412-421
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• 2009

Due to the physical characteristics of NAND flash memory, overwrite operations are not permitted at the same location, and therefore erase operations are required prior to rewriting. These extra operations cause performance degradation of NAND flash memory file system. Since it also has an upper limit to the number of erase operations for a specific location, frequent erases should reduce the lifetime of NAND flash memory. These problems can be resolved by delaying write operations in order to improve I/O performance: however, it will lower the cache hit ratio. This paper proposes a policy of page management using double cache for NAND flash memory file system. Double cache consists of Real cache and Ghost cache to analyze page reference patterns. This policy attempts to delay write operations in Ghost cache to maintain the hit ratio in Real cache. It can also improve write performance by reducing the search time for dirty pages, since Ghost cache consists of Dirty and Clean list. We find that the hit ratio and I/O performance of our policy are improved by 20.57% and 20.59% in average, respectively, when comparing them with the existing policies. The number of write operations is also reduced by 30.75% in average, compared with of the existing policies.

• Journal of the Korean Society of Food Culture
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• v.22 no.6
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• pp.690-695
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• 2007

This research aimed to Kimchi to be well known in the World, which to be international food on the each nation and each people, each religion cultural area, with having done Kimchi adaptation plan for localization. Among the plan, Kimchi utilization ways with the localization strategy in Turkish dietary life were investigated to the Kimchi preference, improvement points on Turkish view, for the Turkey person it would be able to apply in Turkish food culture, and the results are as follows. 1. According to sex of Chinese cabbage Kimchi preference, men ($M=3.75\;{\pm}\;0.89$) appeared higher than women ($M=3.62\;{\pm}\;0.88$). Color or appearance preference after Chinese cabbage Kimchi taste was investigated in order that red > burnish felt > transparent > yellow, and the smell preference which was hot($M=4.64\;{\pm}\;1.37$) appeared highest. A hot taste felt most intensely, and it was investigated in order that aftertaste> salty taste > sourness > off flavor taste > fermented fish source taste > sweetness> carbonic acid by the followings. For the feeling of texture of Kimchi, the crunch was higher than durable tough(it was visible the consider difference of the sex 2. That the Korean Kimchi hit to a palatable taste, against 109 people (72.2%) answered suitable appetite to this taste, and the reason which was in order of that hot tasty > appearance > chewing texture > red > fermented flavor was investigated. Did not hit to a taste 42 people (27.8%) answer back, with the reason that was investigated in order of hot tasty > appearance > red > fermented flavor > chewing texture. The hot tasty of Kimchi was commonly presented that hit and did not hit to appetite taste against people. 3. Among the Turkish food, similar foods for Kimchi were answered in order of Lahana Tursu (44.2 %) > Kapuska (25.9 %) > Lahana Prasa (11.1%), and similar food category were that Chinese cabbage or various vegetables to be pickling food and to be dressing salad with salt and vinegar. The accompanied or garnished Turkich food category for Kimchi were answered in order of cooking meat (34.1%)> steamed cooking rice (22.7%)> cooking fish (17.0%)> cooking soybean (14.2%). This result was same tendency with steamed cooking rice accompaniment for Kimchi in Korea and Turkey, and could be applied a new main menu like meat cooking and fish cooking dish which matched and accompanied with Kimchi.