• International Journal of Computer Science & Network Security
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• 제21권2호
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• pp.221-228
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• 2021

Recent improvements on the quality, fidelity and availability of biometric data have led to effective human physical activity detection (HPAD) in real time which adds significant value to applications such as human behavior identification, healthcare monitoring, and user authentication. Current approaches usually use machine-learning techniques for human physical activity recognition based on the data collected from wearable accelerometer sensor from a single wearable smart device on the user. However, collecting data from a single wearable smart device may not provide the complete user activity data as it is usually attached to only single part of the user's body. In addition, in case of the absence of the single sensor, then no data can be collected. Hence, in this paper, a continuous HPAD will be presented to effectively perform user activity detection with mobile service infrastructure using multiple wearable smart devices, namely smartphone and smartwatch placed in various locations on user's body for more accurate HPAD. A case study on a comprehensive dataset of classified human physical activities with our HAPD approach shows substantial improvement in HPAD accuracy.

• 대한방사선기술학회지:방사선기술과학
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• 제22권1호
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• pp.5-11
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• 1999

This paper reviews recent major activities on instrumentation and methodology of PET. The performance of the PET instrumentation can be expressed by four physical characteristics, 1) spatial resolution, 2) coincidence resolving time, 3) energy resolution, and 4) detection efficiency. The physical and technical aspects of PET systems are briefly discussed along with these characteristics. Toward high resolution PET the recent trend has been to design multiple rings of densely packed detector arrays with scintillators. In order to satisfy the sampling requirement in reconstruction, continuous detector units has been developed. Iterative image reconstruction algorithms have received considerable attention for improvement of both the sampling requirement and image quality toward the stationary PET. Better resolving time improves the maximum true coincidence rate, which is also increased with more detectors placed in coincidence with each other. It suggests that volume PET is promising for enhancement of detection efficiency. The scattered coincidence event rate may be reduced by using detectors with better energy resolution. The use of interplane septa, however, takes over improvement of energy resolution in 2D PET. Energy resolution becomes an important factor for image quality under the condition of septa removal such as volume PET. Toward full utilization of emitting photons, 3D reconstruction incorporating oblique rays has been studied, and volume reconstruction algorithms have been developed. Practical volume PET systems impose heavy burden not only to detector sets and coincidence circuits, but also to computers in the memory requirements and the data processing. In conclusion, there have been many ingenious methods in development of PET instrumentation, which are based on unique capability of PET. They will be expected to overcome technical limitations, and to approach the fundamental limits.

• Journal of the Korean Wood Science and Technology
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• 제10권3호
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• pp.152-164
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• 1982

1. In order to make the improvement of plywood quality, this study has been made. The pretreatments applied to the veneers are as follows. a) The soaking treatment of the veneer in 30 percent methanol solution for 24 hours was applied to remove some resinous materials which may cause many stain discolouring on the face of finished plywood. b) The preservative treatment of the veneer in 2 percent malenit solution for 2 to 3 minutes was adopted to make resistance against decay and insect damages. c) The fire retardant treatment of the veneer in 40 percent ammonium phosphate solution for 2 hours was applied to give retardation effect against fire burning. 2. The results summarized in this study are as follows. a) One percent resinous materials was extracted, after the soaking of the veneers in 30 percent diluted methanol. b) No marks of the dirty stains of resinous materials on the face of the treated plywood was shown, although many quite dirty stains on the face of untreated plywood have contrary seen. c) However, the strip shear test strength of the treated plywood was not decreased. It means that there is no difference in the strength between the treated plywood and the untreated plywood. The strength values were 25.08 kg/$cm^2$ and 24.98 kg/$cm^2$, respectively. d) The strip shear test strength of plywood made of the treated veneers in 2 percent malenit solution was not decreased. e) The slight decrease of the strip shear test strength of the treated plywood made of the treated veneer in 40 percent ammonuim phosphate solution was shown. However, the remarkable difference of the fire retardation activities between the treated specimens and the untreated specimens has seen as in Table 10, that is, the fire proofed specimens had taken about 28 seconds to start to burn, while the untreated specimens had taken 15 seconds to reach to burning. This means that the fire retardation effect of the fire proofed plywood was greater than that of the unproofed plywood.

• 한국산학기술학회논문지
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• 제16권3호
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• pp.1894-1903
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• 2015

본 연구의 목적은 만성뇌졸중 환자에게 운동학습이론을 기초한 물리치료와 작업치료를 병행한 집단 과제지향적 순환훈련 프로그램을 실시하여 운동기능, 일상생활동작과 삶의 질적인 변화를 알아보고자 하였다. 6명의 만성 뇌졸중 환자에게 31주간 실시하였다. Chedoke-McMaster 뇌졸중평가, 균형검사, 일상생활활동 운동 처리기술 평가(Assessment of Motor and Process Skills: AMPS)와 뇌졸중 영향척도 측정을 치료 전과 후에 수집하였다. 연구결과, 운동기능 손상영역, 균형과 뇌졸중 영향척도의 기분과 정서영역에서 통계적으로 유의하게 향상되었다. 일상생활활동 운동 처리기술 평가는 운동(motor)영역에서 6명 중 3명에게 처리(process)영역은 4명에서 훈련 후 향상되었다. 본 연구결과를 바탕으로 집단 과제지향적 순환훈련은 지역사회 만성 뇌졸중 환자의 신체적 기능 향상에 이점이 있다고 제언하는 바이다.

• 한국의료질향상학회지
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• 제24권1호
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• pp.9-22
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• 2018

Purpose: The purpose of this study is to develop the Korean root cause analysis (RCA) software that can be used to systematically investigate underlying causes for preventing or reducing recurrence of patient safety incidents. Methods: We reviewed the existing guidelines and literatures on the RCA in order to figure out the RCA process. Also we examined the existing RCA softwares for investigating patient safety incidents to design the contents and interface of the RCA software. Based on the results of reviewing literatures and softwares, we developed a draft version of the Korean RCA software that can be easily used in Korean hospital settings by RCA teams. Results: The Korean RCA software consisted of several modules, which are modules for identifying patient safety incidents, organizing RCA team, collecting and analysing data, determining contributory factors and root causes, developing the action plans, and guiding evaluation. Conclusion: The Korean RCA software included optimized RCA process and structured logic for cause analysis. Thus even beginners in RCA are expected to easily use this software for investigating patient safety incidents. As software has been developed with the public financial support, it will be distributed free of charge. We hope that it will contribute to facilitating patient safety improvement activities in Korea.

• 한국식품과학회지
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• 제20권3호
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• pp.426-432
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• 1988

${\alpha}-galactosidase$ 및 protease활 을 가지는 효소제 제를 두유(豆乳) 제조시에 처리하여 장내(腸內) 가스발생인자(flatulence factor)를 제거 하는 동시에 두유의 수율(收率)과 소화율(消化率)을 향상시키고자 실험한 결과는 다음과 같다. 두유의 생산량 및 단백질 수율은 효소제(酵素劑) 처리에 의하여 증가하지 않았다. 두유 중 고형분의 양은 pH 6에서 pH10으로 높아질수록, 효소제 처리온도가 $30^{\circ}C$에서 $60^{\circ}C$로 높아질수록 증가하였다. 두유중 TCA가용성 질소화합물의 비율은 효소제의 농도가 높을 수록, pH 4에서 pH10으로 증가 할수록, 처리시간이 길어질수록 증가하였고 처리온도 $50^{\circ}C$까지 증가하는 경향을 보였다. 장내 가스 발생인자로 알려진 raffinose와 stachyose의 함량도 효소제의 농도가 증가할수록, 처리 온도가 $30^{\circ}C$에서 $60^{\circ}C$로 증가함에 따라 많이 감소하였으며 최적 pH는 4-5사이였다.

• 유통과학연구
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• 제14권4호
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• pp.127-134
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• 2016

Purpose - Value chain in agriculture refers to direct and indirect activities related to value-added process from raw materials to final products in agricultural industries. In recent years, value chain analysis has become more important in the area of agricultural development. This article reviews the concept and importance of value chain analysis in the context of agricultural development and attempts to suggest improvement strategies. Research design, data, methodology - A literature survey was conducted for value chain analysis for agricultural development. The case of agro-value chain in Cambodia was deeply analyzed based upon interviews with government officers and related experts. Results - It seems that agro-value chain in developing countries are not well developed and does not carry out appropriate functions, compared to developed countries. Because value adding facilities, such as storage, processing and packing plants, milling plants, and etc. are not sufficiently constructed, the quality of agricultural products is low. Especially developing countries may loose opportunities to increase value of their product by exporting their agricultural products as raw materials to neighboring countries. Value adding process is also mainly controlled by traders in local markets or wholesale markets in urban areas. Farmers therefore can get lower share of final value of agricultural products compared to the shares paid to traders. Lastly it is argued that governments of developing countries do not play an active role in developing value chains and do not carry out coordinating functions in an effective and efficient manner. Conclusions - The first step to improve agro-value chain in developing countries is to identify and analyze value chain structure of agricultural products and to make development strategies and implementation programs. For improving value chain of agricultural products in developing countries, it is required to provide not only plans for constructing hardwares, such as wholesale markets, storage facilities, processing and packing plants, and etc., but also plans for improving softwares, such as measures for improving product quality and safety, setting up grade and standard, providing market information, and nurturing producer cooperatives.

• 보건행정학회지
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• 제4권1호
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• pp.1-24
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• 1994

Recently, two main changes were observed in relation to activities of District Health Centers. One is the rapid increase in the quantity and variety of people's demands for health services due to improvement of income level and the other is an introduction of autonomy in local administration. Unitl recently, the District Health Services were mostly depended on the instructions and orders given by Central Governments, and it would be necessary to prepare for the future implementation of autonomous local administration. Especially, the urban health centers may need more attention than those in rural areas because of their complexity and it would be more difficult in choosing and implementing a most suitable health programs for urban communities. This study was made to find out a feasibl developmental model which could be applicable for the urban bealth centers in Kyeongnam- do area. The most studies relating to health centers activities in the past were made by saking questions to current health center workers, but this study has made an effort to find out the opinions of those who are representing the people in the community. For this study, therefore, the Members of Gity Parliament and Village Headmen from 10 cities is Kyeongnam- do were interviewed for the study and the results obtained were compared to those of health officers. It was found that both Parliament Members and Village Headmen were well aware of the need of health centers, however, they tend to put lower priority for health services in compare with other community activities, and pointed out poor quality of services and lack of public understanding as the problems to be overcome. As to the desirable body for policy decision and implementation of health programs, the Members of Local Parliament think the Local Parliament as ideal, where as Village Headmen prefer health experts, and health officenr prefer District Health Center respectively. The most urgent problems of the District health Centers are mentioned as lack of health manpower. As the results of his study, the followings are suggested for improvement of District Health Services; First : reinforcement of professional health workers, Second : establishment of Community Health Council, Third : strengthening of public health education and support, Fourth : flexibility in Local Autonomy and target system relating to health activities.

• 대한토목학회논문집
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• 제38권2호
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• pp.327-335
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• 2018

건설공사의 품질관리비를 산정하기 위해서는 관련 법 규정에 따라야 하며 세부적으로는 품질시험비와 품질관리활동비 등 여러 항목의 비용 산출이 요구된다. 품질관리비 중에서 인건비는 건설공사 품질관리 업무지침의 품질시험비 산출단위량을, 인건비의 노임단가의 적용은 대한건설협회 및 한국엔지니어링협회가 조사 공표하는 노임단가를 적용하도록 규정하고 있다. 그러나 관련 법 규정에서 품질관리자와 품질시험자의 인건비 적용기준이 서로 모호하게 규정되었으며, 건설공사의 품질관리비 산정 및 인건비 적용 등에 혼란을 유발 하였다. 또한 품질관리자의 배치기준에 대하여 공사규모에 따라 규정하고 있으나 품질시험자의 배치기준에 대한 규정은 없으며, 건설현장에서는 품질관리자 외 품질시험자의 배치인력이 없거나 매우 적은 인력을 배치하는 등 소극적인 행태로 인하여 품질시험자가 실시해야 할 품질시험 업무를 품질관리자가 실시하고 있어 과중한 업무로 인하여 품질관리 활동의 저조와 품질확보가 어려운 현실이다. 본 연구에서는 건설공사의 품질확보 및 부실공사 방지를 위하여 품질관리비의 인건비 산정과 품질관리자 및 품질시험자의 배치기준을 다음과 같이 정립하고 제시한다. 관련 법 규정에서 모호하게 규정하고 있는 배치기준을 품질관리자와 품질시험자로 구분하여 공사규모에 따라 배치하도록 규정하고, 한국엔지니어링협회의 노임단가를 기준으로 하여 품질관리자 및 품질시험자의 인건비를 각각 기술자(기술사, 특급, 고급, 중급, 초급) 및 숙련기술자(고급, 중급, 초급)의 노임단가를 적용하도록 제시한다.

• 한국식품영양과학회지
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• 제44권8호
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• pp.1219-1225
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• 2015

본 연구는 생리활성이 풍부하여 기능성은 있으나 대중화되지 않은 팽화수수를 발효주 제조 시 첨가하여 이화학적, 생리활성 및 관능적인 특성을 조사하였다. 발효주 제조 결과 pH는 발효가 일어나는 동안 약간 낮아지는 경향을 나타내었다. 총산은 pH 감소 양상과 유사하게 발효가 진행될수록 증가하는 것으로 나타났다. 발효주의 환원당 측정 결과 팽화수수 첨가량에 따라 초기 환원당은 높았으나 발효가 진행되면서 감소하며 비슷하였고, 대조구보다 약간 높은 값을 나타내었다. 특히 증자한 수수를 첨가한 발효주는 발효 마지막 날 환원당이 거의 존재하지 않았다. 발효주의 알코올 농도 변화는 대조구 16.8%와 비슷하게 나타나 팽화수수 25%에서 16.5%로 나타났다. 팽화수수 첨가량에 따른 유의적인 차이는 없었다. 발효주의 색도를 분석한 결과 명도의 경우 생수수 첨가 발효주가 가장 높은 L값을 나타냈고, 반면에 대조구에서 가장 낮은 값을 나타냈다. 항산화 활성 분석 결과 수수를 첨가한 발효주가 대조구에 비해 약 4배 이상 우수한 결과를 나타냈고, 팽화수수의 첨가량이 증가할수록 항산화능도 우수하였다. 발효주의 혈당강하능 또한 대조구 27.39%에 비해 팽화수수를 첨가한 발효주가 42.30~55.28%로 높았고, 팽화수수 첨가량이 많을수록 혈당강하능이 높다는 결과를 얻었다. 마지막으로 발효주의 관능평가 결과 팽화수수 25%와 50%를 첨가한 발효주가 전체적인 기호도면에서 가장 우수한 결과를 나타내었다.