• The Journal of Korean Institute of Information Technology
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• v.17 no.4
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• pp.131-136
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• 2019

People with compromised visual ability suffer from many inconveniences in daily life, such as distinguishing colors, identifying currency notes and realizing the atmospheric temperature. Therefore, to assist the visually impaired people, we propose a system by utilizing optical and infrared cameras. In the proposed system, an optical camera is used to collect features related to colors and currency notes while an infrared camera is utilized to get temperature information. The user is enabled to select the desired service by pushing the button and the appreciate voice information are provided through the speaker. The device can distinguish 16 kinds of colors, four different currency notes, and temperature information in four steps and the current accuracy is around 90%. It can be improved further through block-wise input image, machine learning, and a higher version of the infrared camera. In addition, it will be attached to the stick for easy carrying and to use it more conveniently.

• Clinical and Experimental Pediatrics
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• v.50 no.6
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• pp.536-542
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• 2007

Purpose : We investigated the effects of restricted fluid in the first 7 days of life on the risk of bronchopulmonary dysplasia (BPD) or patent ductus arteriosus (PDA) in very low birth weight (VLBW) infants. Methods : Eighty three VLBW infants who lived more than 28 days were selected. The amount of daily maintenance fluid was determined by calculation of insensible water loss (IWL) and urine output (UO). Seventy to 80 percent of calculated amount was given to the ventilated infants. Subjects were grouped into low (<25th%), moderate (25-75th%), and high (>75th%) fluid groups for the first 24 hours, 3 days and 7 days. Chi square tests analyzed proportions of subjects with or without morbidities across fluid groups. Multivariate logistic regression was used to analyze the effect of fluid intake on BPD or PDA, controlling for factors that are significantly associated with BPD or PDA by univariate analysis. Results : Rates of BPD and PDA were not significantly associated with fluid groups on each time period. The result was the same after controlling for factors that are significantly associated with BPD or PDA by univariate analysis. For the first 3 and 7 days, fluid intakes were positively related with maximal weight loss, urine output and mechanical ventilation duration. Conclusion : In VLBW infants, when given based on needs reflected from IWL and UO versus intake, relatively low fluid intakes in the first week of life do not decrease the risk of BPD or PDA, and vice versa. We suggest that calculation of daily fluid based on IWL and UO is appropriate for VLBW infants.

• Clinical and Experimental Pediatrics
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• v.52 no.2
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• pp.181-186
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• 2009

Purpose : Inflammation plays a potential role in the pathogenesis of bronchopulmonary dysplasia (BPD). Strategies for preventing BPD include respiratory management, antioxidants, nutritional treatment, and others such as anti-inflammatory agents. We aimed to assess the safety, tolerability, and efficacy of montelukast (MK), a cysteinyl leukotriene 1 receptor antagonist, as an add-on therapy in BPD. Methods : In addition to currently available standard measures such as oxygen supplementation, bronchodilators, nutritional support, and/or diuretics, montelukast was administered to 15 preterm infants with BPD. MK was given orally (1 mg/kg/d) for a mean period of 12 weeks. We compared safety and efficacy parameters with historical controls. Results : All 15 patients survived, and no differences were found in the incidence of adverse reactions between the 2 groups. The ventilation index was significantly improved after 2 weeks in MK group compared with historical controls. There were no significant differences in other respiratory parameters (MAP, oxygen dependency, and ventilator dependency) between the groups, but the MK group showed trends of greater improvement. Conclusion : Administration of MK 1 mg/kg/d was well tolerated in preterm BPD patients as an add-on therapy. We demonstrated that after 2 weeks of MK administration of 1 mg/kg/d, MK had beneficial therapeutic effects on BPD patients as an add-on to the standard therapy. Further multicenter randomized controlled clinical trials are needed to confirm the efficacy and safety of MK as a useful supplement to standard therapy for BPD patients.

• VENDING MACHINE INDUSTRY
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• no.autumn
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• pp.25-31
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• 2000

자판기가 먹고 사는 것은? 돈이다. 돈이 아니면 자판기는 그 존재가치를 보장받지 못함은 물론 작동자체가 되지 않는다. 투입금액에 상응하는 물품을 무인서비스 하기 위해선 돈을 투입되는 기본행위가 우선 이루어져야 한다. 이 기본행위는 소비자와 자판기와의 1차적인 약속이자 신뢰성이 전재되지 않으면 않되는 가장 중요한 연결고리이다. 그런데 이러한 가장 기본적이고 중요한 연결고리가 최근 외부적인 환경변화에 따라 위협받고 있다. 한국은행 및 조폐공사의 변경 1000원권 발행계획으로 자판기가 이를 인식하지 못하는 사상 초유의 사태가 산업계에 닥쳐올 상황이기 때문. 지폐를 인식하지 못하는 자판기는 엄청난 직무유기이다. 지폐가 안되면 동전을 넣으면 되지 않느냐 하는 시각도 있겠지만 동전이 있으면 지폐는 애초 꺼내지도 않는 게 일반적이다. 가뜩이나 시장부진에 시달리는 산업계에 전혀 예기치 않았던 시장악재. 이 문제에 제대로 대처하지 못하면 자판기 산업은 큰 위기상황에 빠질 가능성도 크다. 그간 협회도 이 사안의 원활한 해결을 위해 산업계를 결속해 줄기차고 강력한 대응을 진행해 왔다. 그탓에 아직 본격적인 발권이 이루어지지 않고 발권시기도 산업계에서 요구하는 시기를 최대한 수용, 점차적인 발급을 진행해 피해를 최소화 하겠다는 확답을 받아 놓은 상태이지만 문제는 그렇게 간단하지 않다. 교체비용문제, a/s문제, 필드대응, 매출감소, 기계파손 등 현시점에서 우려되는 상황은 너무도 많다. 따라서 이 부분에 산업계가 어떻게 적극적인 대응을 진행해 나가느냐에 따라 그 피해와 파장의 범위가 달라질 것으로 보여진다. 현시점에서는 최소한의 피해가 와닿도록 필드에서의 원활한 대처를 목표로 하고 있지만 결고 쉽지만은 않는 일이다. 본란에서는 현재 변경 1000원권에 대한 산업계의 대처 현황을 알아보고 산업계가 피해를 최소화하고 현명한 대처를 진행 할 수 있는 방법을 모색해 보는 시간을 마련했다.

• Neonatal Medicine
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• v.16 no.1
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• pp.47-54
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• 2009

Purpose: Present evidences suggest that Ureaplasma urealyticum is a cause of pneumonia, septicemia, and bronchopulmonary dysplasia (BPD) in newborn infants, particularly those born prematurely. The purpose of this work was to examine the relationship between Ureaplasma urealyticum in the tracheal aspirates and adverse outcomes, such as BPD and early onset neonatal sepsis in premature infants. Methods: A polymerase chain reaction (PCR) was performed on tracheal aspirates collected within 24 hour after birth in 176 premature infants less than 35 weeks of gestation and admitted to the neonatal intensive care unit of Bundang CHA Hospital. Results: U. urealyticum was detected in 37 of 176 preterm infants (21.0%). Gestational age ($29^{+5}{\pm}2^{+5}$ wk vs. $30^{+6}{\pm}2^+{-5}$ wk, P=0.0l3) and birth weight (1.39${\pm}$0.44 kg vs. 1.59${\pm}$0.55 kg, P=0.037) were lower in the U urealyticum-positive group compared to the control group. The incidence of early onset neonatal sepsis (16.2% vs. 6.5%, P=0.045) and BPD (45.9% vs. 29.5%, P=0.047) was higher in the U urealyticum-positive group compared to the control group, but the severity of BPD was not different between two groups. However, multiple logistic regression analysis revealed that the presence of U. urealyticum was not independently related to the development of early onset neonatal sepsis and BPD. Conclusion: The results suggest that colonization of the lower respiratory tract by U. urealyticum might not be related to the development of neonatal sepsis and BPD directly in preterm infants.

• Proceedings of the Korean Institute of Communication Sciences Conference
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• 1992.06a
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• pp.481-485
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• 1992

• The Science & Technology
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• no.3 s.442
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• pp.37-39
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• 2006

• Neonatal Medicine
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• v.15 no.1
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• pp.6-13
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• 2008

• Journal of Industrial Technology
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• v.22 no.A
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• pp.101-105
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• 2002

Counters for various kinds of bank notes require high-speed distinctive point extraction and recognition for notes. In this paper we propose a new point extraction and data extraction method from specific parts of a bank note representing the same color. The recognition algorithm uses a back-propagation neural network that has coordinate data input. The proposed algorithm is designed to minimize recognition time.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 2005.06a
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• pp.1307-1310
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• 2005

ATM is element that reliability, stability is important in relation with customer by financial agency used device. To embody high reliability and stability, reliability estimation technology development is important. When new product is developed, performance and reliability evaluation of product are essential element. In this paper, is treating contents on reliability estimation of stepping motor, BLDC motor and solenoid that is main driving source of note handling units.