• 대한전기학회:학술대회논문집
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• 대한전기학회 2015년도 제46회 하계학술대회
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• pp.471-472
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• 2015

This paper proposes a generator maintenance scheduling (GMS) problem with due consideration of various objective functions. The objectives include leveling the reserve rate, maximizing reliability and minimizing production cost. The practicality and effectiveness of the proposed approach are demonstrated in the simulation for a real-size power system model in South Korea.

• 한국실내디자인학회논문집
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• 제24권4호
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• pp.135-142
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• 2015

The goals of healthcare design based on the human rights to manage physically, psychologically, and emotionally healthy life. The healthcare designs, however, have been criticized not to reflect their primary users, patients' and families' needs, under the management strategy centered by the functional efficiency. The study focused on the patients' room design on the users' perspective. The design criteria for the patients' room in Japan, Germany, Australia, U.S. and Korea were examined and compared. The subjects of analysis are the floor plans of general hospital recently planned and built in Korea and Japan and the standard floor plan models proposed by prior studies in Korea and AusHFG in Australia. Results and conclusions are as follows: (1) the patients' room has developed as a place where the users manage their living during inpatient period and has become a private room. (2) The guidelines for patients' room size in Korea and Japan are not enough considering the users' diverse activities compare to those in U.S. and Australia. (3) The guidelines of Korea should be reconsidered for the users' comfortable lives. It must include the specific criteria of the enough space between beds, the storages, and other assistant tools and facilities. (4) The desirable types of patients' rooms by the numbers of users in Korea are proposed as a one-bed room type and a four-bed room type.

• 한국해양학회지:바다
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• 제24권1호
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• pp.54-63
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• 2019

국가해양생태계종합조사의 일환으로 2015년부터 2017년까지 3년간 강화남단, 가로림만, 증도, 순천만 등 한반도 4개 대표 갯벌에서 시계열 변화에 따른 퇴적환경 및 유 무기 오염현황을 조사하였다. 조사시기 및 지역별 퇴적물의 평균입도는 강화남단 $5.0-5.3{\varnothing}$, 가로림만 $4.5-4.8{\varnothing}$, 증도 $6.1-6.5{\varnothing}$, 순천만 $8.6-8.7{\varnothing}$이었다. 전반적으로 강화남단에서 순천만으로 남하함에 따라 입도가 조립해지는 경향을 나타내었고, 순천만에서 가장 세립한 경향을 보였다. 조사시기별로 강화남단과 증도의 경우 2015년보다 2017년에 평균입도가 보다 세립화되는 경향을 나타내었다. 강열감량은 2015년 순천만에서 15.5%로 다른 지역에 비해 상대적으로 높았으나 2016년 8.3%, 2017년 7.0%로 시간의 경과에 따라 점차 감소되었다. 미량금속 농도는 증도와 순천만의 일부정점에서 Zn와 As가 주의기준(TEL)을 초과하였으나 기타 금속의 경우 오염농도 이하의 범위로 분석되어 오염의 개연성이 나타나지 않았다. 연구지역내 퇴적물중 평균입도와 미량금속 농도 사이의 관계를 살펴본 결과, 증도의 경우 수은을 제외한 모든 미량금속과 강열감량이 평균입도와 정의 상관성(r=0.40-0.88, P < 0.05)을 보였다. 반면 순천만의 경우, 입도와 미량금속은 유의한 상관성이 없는 것으로 파악되었으며, 강열감량과 미량금속 간에 음의 상관성(p < 0.05)을 나타내었다. 퇴적물의 미량금속 오염을 평가하기 위하여 농집지수 $I_{geo}$를 계산한 결과, Cu, Zn, Pb, Cd, Hg에 대해서는 1보다 작은 범위로 오염되지 않았고, As의 경우 순천만과 증도의 일부정점에서 약간 오염된 수준에 해당되었다.

• 한국어류학회지
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• 제27권1호
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• pp.33-38
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• 2015

주둥치의 위내용물 분석에 이용된 개체는 총 350개체로 가덕도 주변해역에서 2010년 10월부터 2011년 9월까지 매월 채집하였다. 주둥치의 체장범위는 3.0~9.8 cm를 보였다. 주둥치는 주로 요각류와 게류 유생, 새우류 유생, 갯지렁이류 등을 섭식하는 육식성 어류로 확인되었다. 그 외에 난바다곤쟁이류, 단각류, 이매패류 유생, 복족류 유생 등도 발견되었지만, 그 양은 많지 않았다. 주둥치는 성장함에 따라 주요 먹이생물을 전환하였는데 3~5 cm 사이의 개체들은 요각류를, 5~7 cm 사이의 개체들은 게류 유생과 새우류 유생을, 8~10 cm의 개체들은 갯지렁이류를 주로 섭식하였다. 체장이 증가함에 따라 먹이생물의 무게는 유의하게 증가하였다.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2015년도 추계학술대회
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• pp.367-368
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• 2015

이 논문에서는 NG-EPON (next-generation Ethernet-passive opticla network) 시스템에서 미사용 대역폭에 의한 성능 저하를 평가한다. NG-EPON에서는 패킷이 fragmentation 되지 않으므로 grant의 크기가 패킷의 크기보다 grant가 낭비된다. 시뮬레이션을 통하여 미사용 대역폭에 의한 성능저하를 평가하였다.

• 융합신호처리학회논문지
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• 제16권1호
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• pp.29-34
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• 2015

The ECG(Electrocardiograph) ambulatory test as called Holter is performed usually to diagnose several heart diseases causing different arrhythmias. This paper exposes the insights of the design of a 10-lead ambulatory ECG recorder. Reducing the size and minimizing the power consumption of the ECG recorder are crucial to allow long recording time without causing discomfort to the patient. This paper proposes lower hardware design and differential compression algorithm to extend the maximum 72 hours recording time in consideration of smaller and light-weighted recorder size. The performance results by newly introduced compression algorithm are shown and discussed.

• 한국의류학회지
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• 제44권6호
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• pp.1070-1086
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• 2020

This study analyzed the size of women in their 60s, 70s and 80s in the 2014 Human Body Dimension Survey data among Size Korea's 7th Human Dimension Survey Data in 2015. This study examined the characteristics of changes in female body shape according to aging and the age range. The height item gradually decreased from the 60s and then rapidly decreased to the 80s. In the case of the circumference item, a sharp change occurred in the section from 69 to 70 years old. The reduction in hip height, waist height, and navel level waist height was not significant compared to the decrease in stature. Both width, thickness, and circumference gradually decreased with age. It can be seen that the back bends forward and the legs become thinner than the body due to the aging phenomenon with increasing age. Even for older women, the characteristics of aging differ in their 60s, 70s and 80s, so age segmentation of silver clothing should be considered.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.706-707
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• 2015

Our country is aiming at 30% reductions in building energy consumption accounting for 39% of the total energy consumption by 2020[1]. For this purpose, the government is developing and applying the Building Energy Management System (hereinafter, referred to as "BEMS", Smart plug, etc.) while the researches on new renewable energy development. BEMS, which is applied with focus on large buildings, is inducing energy management of the entire building through energy measurement and data management, but considering its economic efficiency, it's very difficult to apply BEMS to small & medium-size buildings. Hereupon, this study intends to implement the case analysis of deterioration and economic efficiency of major equipment in buildings on the basis of electricity consumption which has been measured targeting small & medium-size buildings for a certain period by taking into account that equipment deterioration is a contributor to the increase in energy consumption.

• Childhood Kidney Diseases
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• 제20권2호
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• pp.63-68
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• 2016

Purpose: Disruption of normal renal development can lead to congenital anomalies of the kidney and urinary tract, including renal hypodysplasia. We aimed to clarify whether small kidney size affects clinical manifestations in children with urinary tract infection (UTI). Methods: One hundred fifty-four patients who had their first symptomatic UTI between January 2014 and June 2015 were enrolled in this study. Differences in kidney size were estimated based on percent uptake of $^{99m}Tc-$ dimercaptosuccinic acid (DMSA) in scintigraphy. The patients who showed more than 10% difference in kidney size on DMSA scintigraphy with none or minimal cortical defects were included in group A. (group A, n=17). Laboratory, clinical, and imaging results were compared with those of the other patients (group B, n=137). Results: Group A had a relatively higher incidence of vesicoureteral reflux than group B (44% vs 20%, P<0.05). The levels of plasma neutrophil gelatinase-associated lipocalin (NGAL) and serum C-reactive protein were significantly higher in group A (193 [64-337] vs 91 [59-211] ng/mL and 4.1 [0.5-11.9] vs 2.1 [0.7-5.3] ng/mL, respectively; all P <0.05). Linear regression analysis revealed that plasma NGAL level strongly correlated with the difference in renal uptake in DMSA scintigraphy in group A ($R^2=0.505$). Conclusion: The difference in kidney size could influence the clinical course and severity of pediatric UTI.

• 보건의료산업학회지
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• 제9권3호
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• pp.175-185
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• 2015

Objectives : This study was did a meta-analysis of emergency room visits decreased effectiveness of self management education interventions in asthma among adult patients with asthma. Methods : A search of the database PubMed resulted in identifying 8,619 studies done between January 1990 and November 2012. STATA version 10.0 was used to analyze the effect size, explore possible causes of heterogeneity, and determine publication bias with a funnel plot. Results : We included 7 cases on emergency room visits decreased effectiveness of self management and education. Asthmatic patients experienced fewer attacks (summary effect size, 0.75; 95% confidence interval [CI], 0.65-0.95). We found that emergency room visits decreased effectiveness of self management and education were associated with statistically significant effects. Conclusions : Based on these finding, self management and education on interventions are necessary to prevent asthmatic attacks in patients and to reduce the severity of the attacks, and self management and education programs are needed in Korea.