• 대한전기학회:학술대회논문집
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• 대한전기학회 1987년도 전기.전자공학 학술대회 논문집(I)
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• pp.244-248
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• 1987

The force/torque sensor for robot is developed. The compliance algorithm for peg-in-hole insertion task using the forec/troque sensor is developed. The system consists of an IBM PC, robot, force/torque sensor, strain meter, A/D board, and interface board. The IBM PC functions as a main processor and the robot controller as a slave processor. The sensor is constructed to measure $T_x$, $T_y$, $F_z$ which are necessary to precisely execute a peg-in-hole insertion task by SCARA type assembly robot. The outputs of sensor are analyzed. On the basis of the analysis, compliance algorithm for peg-in-hole insertion task is developed. Some comments concerning the development of wrist force/torque sensor and compliance algorithm are given.

• 한국식품위생안전성학회지
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• 제26권4호
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• pp.330-335
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• 2011

본 연구에서는 포장돈육 가공공정에서 교차오염의 정도를 알아보기 위하여 실제 돈육 가공공정에서 돈육과 빈번하게 접촉하는 작업자의 손(polyethylene glove 착용, 면장갑 착용, 맨손) 및 작업도구(칼, 도마)를 대상으로 각각에 대하여 Listeria monocytogenes의 상호 교차오염 전이율을 분석하였다. 오염된 돈육에서 작업자로의 전이율은 면장갑이 100.00%로 가장 높았고, 다음이 맨손 2.513%, PEG 1.511% 순으로 나타났다. 특히, 면장갑의 경우 면장갑으로 전이된 균이 다시 맨손으로의 재오염 전이(0.08%)가 이루어지는 것으로 나타났으며, 오염된 돈육에서 칼과 도마로의 전이율은 0.352-3.791%이다. 반대로 오염된 작업자로부터 돈육 및 기구로의 전이율은 0.001-0.141%로 전체적으로 오염된 돈육으로부터의 작업자의 손과 기구로의 전이보다 상당히 낮은 수준으로 전이되었다. 따라서 PEG 착용이 작업공정에서의 교차오염을 줄이거나 예방하는 효과를 얻을 수 있는 것으로 파악되었다. 축산물 작업공정에서의 교차오염은 원료육에서 손 또는 장갑, 도마, 칼 등으로 오염이 전이되고 이들이 다시 돈육을 오염시킬 수 있으므로, 안전한 식품생산을 위해서는 이러한 교차오염의 연속성을 차단하는 것이 무엇보다 중요함을 확인하였다.

• 한국정밀공학회지
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• 제12권10호
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• pp.25-31
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• 1995

In this paper, a direct drive scalar robot manipulator is constructed and its mechanical machanism for operation is explained. Also, a motion controller board for the direct drive robot manipulator was developed where the IBM 486 computer is the main controller. For the developed direct drive robot, a force/motion control algorithm based on an active compliance scheme is developed. A preliminary experiment using the developed direct drive for a peg-in-hole job was done by implementing the control algorithm.

• 한국표면공학회지
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• 제46권4호
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• pp.153-157
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• 2013

The defect like the void or seam is frequently generated in the PCB (Printed Circuit Board) Via-Filling plating inside via hole. The organic additives including the accelerating agent, inhibitor, leveler, and etc. are needed for the copper Via-Filling plating without this defect for the plating bath. However, the decomposition of the organic additive reduces the lifetime of the plating bath during the plating process, or it becomes the factor reducing the reliability of the Via-Filling. In this paper, the interaction of each organic additives and the decomposition of additive were discussed. As to the accelerating agent, the bis (3-sulfopropyl) disulfide (SPS) and leveler the Janus Green B (JGB) and inhibitor used the polyethlylene glycol 8000 (PEG). The research on the interaction of the organic additives and decomposition implemented in the galvanostat method. The additive decomposition time was confirmed in the plating process from 0 Ah/l (AmpereHour/ liter) to 100 Ah/l with the potential change.

• 대한의용생체공학회:의공학회지
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• 제28권5호
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• pp.585-589
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• 2007

This study proposes an automated pegboard utilizing the RFID system with multiple reader antennas for the rehabilitation services and the occupational therapy. The system automates the scoring by detecting the plugging correctness as well as the plugging status. It also aims to increase the patient's interest and the functional intelligence. The system was prototyped and tested for the automatic capability of the scoring the session time and success rate. The proposed system will be served as the typical example for the ubiquitous rehabilitation devices.

• 한국표면공학회지
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• 제46권4호
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• pp.158-161
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• 2013

Recently, the weight reduction and miniaturization of the electronics have placed great emphasis. The miniaturization of PCB (Printed Circuit Board) as main component among the electronic components has also become progressed. The use of acid copper plating process for Via-Filling effectively forms interlayer connection in build-up PCBs with high-density interconnections. However, in the case of copper-via filled in a bath, which is greatly dependent on the effects of additives. This paper discusses effects of Cl ion on the filling of PCB vias with electrodeposited copper based on both electrochemical experiment and practical observation of cross sections of vias.

• 제어로봇시스템학회논문지
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• 제13권12호
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• pp.1192-1197
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• 2007

This study proposes an automated pegboard utilizing the RFID system with multiple reader antennas for the rehabilitation services and the occupational therapy. The system automates the scoring by detecting the plugging correctness as well as the plugging status. It also aims to increase the patient's interest and the functional intelligence. The system was prototyped and the RFID read rate (over 99.998%) was confirmed. The system was also tested for the automatic capability of the scoring the session. The proposed system will be served as the typical example for the ubiquitous rehabilitation devices.

• Pediatric Gastroenterology, Hepatology & Nutrition
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• 제25권3호
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• pp.163-179
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• 2022

Although functional gastrointestinal disorders (FGIDs) are very common in pediatric patients, there is a scarcity of published epidemiologic data, characteristics, and management patterns from Saudi Arabia, which is the 2nd largest Arabic country in terms of area and the 6th largest Arabic country in terms of population, with 10% of its population aged <5 years. Functional constipation (FC) is an FGID that has shown a rising prevalence among Saudi infants and children in the last few years, which urges us to update our clinical practices. Nine pediatric consultants attended two advisory board meetings to discuss and address current challenges, provide solutions, and reach a Saudi national consensus for the management of pediatric constipation. The pediatric consultants agreed that pediatricians should pay attention to any alarming signs (red flags) found during history taking or physical examinations. They also agreed that the Rome IV criteria are the gold standard for the diagnosis of pediatric FC. Different therapeutic options are available for pediatric patients with FC. Dietary treatment is recommended for infants with constipation for up to six months of age. When non-pharmacological interventions fail to improve FC symptoms, pharmacological treatment with laxatives is indicated. First, the treatment is aimed at disimpaction to remove fecal masses. This is achieved by administering a high dose of oral polyethylene glycol (PEG) or lactulose for a few days. Subsequently, maintenance therapy with PEG should be initiated to prevent the re-accumulation of feces. In addition to PEG, several other options may be used, such as Mg-rich formulas or stimulant laxatives. However, rectal enemas and suppositories are usually reserved for cases that require acute pain relief. In contrast, infant formulas that contain prebiotics or probiotics have not been shown to be effective in infant constipation, while the use of partially hydrolyzed formula is inconclusive. These clinical practice recommendations are intended to be adopted by pediatricians and primary care physicians across Saudi Arabia.

• 로봇학회논문지
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• 제8권4호
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• pp.273-282
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• 2013

The purpose of this study was to investigate effect of robot-assisted hand rehabilitation(Amadeo(R)) on hand motor function in chronic stroke patients. This study used a single-subject experimental design with multiple baselines across individuals. Three chronic stroke survivors with mild to sever motor impairment took part in study. Each participants had 2 weeks interval of starting intervention. Participants received robot-assisted therapy(45min/session. 3session/wk for 6wks). Finger active range of motion(AROM) was assessed by Range of Assessment program in Amadeo(R), and test-retest reliability was verified using Pearson correlation analysis. To investigate effect of Amadeo(R), finger AROM was measured immediately after each sessions and Fugl-Meyer Assessment of Upper extremity, Motor Activity Log, Nine hole peg board test and Jebsen-Taylor hand motor function test were assessed at pre-post intervention. Results were analyzed by visual analysis and comparison of pre-post tests. The test-retest reliability of Range of Assessment was good(r=.99). After robot-assisted therapy, finger AROM of participant 1, 2, and 3 was respectively improved by 18%, 3.6%, and 6% each. Hand motor function of participant 1, 3 was improved on all four tests, but not effect in participant 2. Robot-assisted hand rehabilitation could improve finger AROM and effect on hand motor function in chronic stroke patients.

• 한국정보통신학회논문지
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• 제5권1호
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• pp.202-211
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• 2001

본 논문은 수중에서 초음파를 이용하여 데이터를 전송할 때 전체 전송성능에 영향을 주는 Multipath를 수학적으로 분석하였고, 분석된 결과를 이용하여 다중경로의 영향을 고려한 수중 초음파 영상통신 시스템을 설계하였다. 주파수 제약환경에 강인한$\pi/4 QPSK$ 알고리듬을 채택하였고, 수중 초음파 통신에서 발생하는 신호의 Ringing 효과를 상쇄하기 위하여 FM 변조방식을 가미한 Hybrid 변복조 시스템을 설계하였다. 또한, 다중경로의 영향을 상쇄하기 위하여 적응 등화기를 설계하였으며, Baseline PEG 기법을 이용하여 수중영상 압축에 대한 연구를 수행하였다.