• 지능정보연구
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• 제6권1호
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• pp.83-96
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• 2000

본연구는 웹 상에서 원격 협력 학습을 위한 수준별 협력 학습자 진단 및 스케줄링 에이전트의 설계와 구현에 관한 연구이다. 원격 협력 학습은 동일한 학습내용에 흥미를 갖는 아동이 동시에 학습할 수 있는 환경이 필요하며 학습자의 지식 또한 비슷한 수준이어야 효과적인 협력학습을 할 수 있다. 분산 환경의 이질적인 학습자를 모으기 위해서는 좀 더 자율적이고 지능적인 시스템이 필요하며 학습자에 대한 지식을 표현하는 학습자 모델이 요구된다. 이를 위해 에이전트 시스템이 적절하게 사용될수 있으며 학습자의 수준을 판단하기 위한 진단 에이전트와 협력학습이 가능한 여러명의 학습자들을 알맞은 시간과 서버에 연결하는 스케줄링 에이전트를 웹 기반 지능형 교수 시스템에 접목하였다. 학습자 수준을 진단하는 진단 에이전트는 확신도를 높이기 위해 3-모수 로지스틱 확신공식과 시간 가중치 확신인자 공식을 적용하여 신뢰도를 높였다 또한 협력학습의 스케줄링을 위해 다양한 제약조건들의 최적해를 구하기 위해 제약 만족 문제(CSP)로 스케줄링 에이전트를 모델링하였다 본 연구에서 설계 구현한 협력학습자 진단 및 스케줄링 에이전트의 효율성을 살펴보기 위해 여러명의 학습자를 대상으로 실험하였다. 실험을 통해 각 학습자의 지식 수준 진단과 다수의 학습자가 적절한 협력학습을 하기 위한 스케줄링이 매우 효율적으로 이루어짐을 볼 수 있었다.

• The Korean Journal of Pain
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• 제26권4호
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• pp.368-373
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• 2013

Background: Bertolotti's syndrome (BS), a form of lumbago in lumbosacral transitional vertebrae, is an important cause of low back pain in young patients. The purpose of this study was to assess the etiology of low back pain and the efficacy of treatment offered to patients with BS. Methods: All patients of BS Castellvi type1a during a period of 6 months were enrolled in the study. The patients underwent interventional pain procedures for diagnosis and pain relief. Response to the therapy was assessed based on VAS and ODI scores. A 50% decrease in VAS score or a VAS score less than 3 would be considered adequate pain relief. Results: All 20 patients diagnosed with BS during the 6-month observation period had scoliosis. Common causes of back pain were the ipsilateral L5-S1 facet joint, neoarticulation, the SI joint, and disc degeneration. Responses to various interventions for pain relief were different and inconsistent from patient to patient. In particular, responses to interventions for neoarticular pain were generally poor. Conclusions: Pain in patients with BS does not usually respond to interventional pain treatment. A very dynamic treatment approach must be pursued while managing BS patients, and the treatment plan must be individualized at various stages in order to obtain satisfactory pain relief.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2004년도 추계 종합학술대회 논문집
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• pp.402-407
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• 2004

인터넷은 사용이 매우 간편한 도구인 월드와이드웹의 등장으로 인하여 가장 독보적이면서도 강력한 지원을 제공하는 세계에서 가장 간편한 네트워크 자원이 되었다. 더 나아가 정적인 2차원을 넘어서 3차원 View 웹 서비스와 같은 동적인 서비스를 제공하는 많은 방법들이 제시되었다. 본 논문에서는 MRI, CT, PET 같은 2차원 의료 영상을 쌓아 만든 3차원 데이터를 웹에서 인터액티브하게 가시화 하는 볼륨 렌더링 View 프로그램을 제시할 것이다. 이를 위해 우리는 COM기술을 바탕으로 하는 ActiveX 컴포넌트인 OCX 컨트롤로 만들어 웹 페이지에서 실현 가능하도록 하였다. 또한 인터넷만 있으면 쉽게 원격에서도 3차원 가시화를 통한 영상 분석을 할 수 있는 기능을 제공하여 질병의 진단에 크게 기여 할 것으로 기대된다.

• Computers and Concrete
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• 제25권1호
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• pp.15-27
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• 2020

During the past decades, the application of acoustic emission techniques (AET) through the diagnosis and monitoring of the fracture process in materials has been attracting considerable attention. AET proved to be operative among the other non-destructive testing methods for various reasons including their practicality and cost-effectiveness. Concrete and rock structures often demand thorough and real-time assessment to predict and prevent their damage nucleation and evolution. This paper presents an overview of the work carried out on the use of AE as a monitoring technique to form a comprehensive insight into its potential application in brittle materials. Reported properties in this study are crack growth behavior, localization, damage evolution, dynamic character and structures monitoring. This literature review provides practicing engineers and researchers with the main AE procedures to follow when examining the possibility of failure in civil/resource structures that rely on brittle materials.

• 사상체질의학회지
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• 제9권1호
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• pp.25-101
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• 1997

The physiologic and pathologic theories of "The Yellow Emperor's Canon of Internal Medicine (黃帝內經)" were based on yin-yang theory. It has been an important constituent of traditional Chinese medicine, and the eight principal syndromes have been main guidelines in diagnosis and treatment. Recently it had an great influene on the formation of the pathophysiology of Constitutional medicine. Therefore each constitution menifests special pathophysiologic propriorities of the eight pricipal syndromes, especially specific to one's constitution. So we can recognize specific patterns of the yin and yang, cold and heat, exterior and interior, deficient and excessive syndromes through a series of processes distinguishing one's constitution. The theory of the Constitutional medicine, however, has contained those achievements in a new angle and view the problem from a little different standpoint. The dynamic relationships inevitably have caused certain changes and distortions in the meaning and application of eight principles. These are a progress in medical science, and this advance is the stirring venture of Lee jaema. This thesis has intended to show the delicate relationship between the two, and investigate into these "changes and distortions".

• 음성과학
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• 제12권2호
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• pp.81-88
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• 2005

Electrodermal activity(EDA) is a bio-electric signal which occurs at the skin surface during the sweating. EDA reflects the activity of the sympathetic axis of the autonomic nervous system. EDA is associated with the eccrine sweat gland at the palmar and plamar surface. This study was aimed to characterize the relationship between EDA and auditory stimulus intensities. Acoustic stimulus used in this study were 500 Hz, 1 kHz, 2 kHz of narrow band noise, which were representative of speech frequencies in audible range. Stimulus intensity between 90 and 30 dB in 10 dB within dynamic range. After deriving the minimum stimulus intensity(threshold of skin potential) which elicited skin potential, and then the latency and amplitude were derived from waveform of skin potential, each latency and amplitude were compared to stimulus intensity. The waveform of skin potential were recorded stably, and the threshold of skin potential appeared nearly the hearing threshold level of the participant. The latency was decreased and the amplitude was increased according to the increase of the stimulus intensity. These results suggest that auditory evoked skin potential can be applicable to auditory assessment and audiological diagnosis tool.

• 한국생산제조학회지
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• 제9권3호
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• pp.150-159
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• 2000

In-process diagnosis of the cutting state is essential for the automation of manufacturing systems. Especially when the cutting process becomes unstable it induces self-exited vibrations a frequent case of poor tool life rough surface finish damage to the workpiece and the machine tool itself and excessive down time. To ensure that the cutting process main-tains stable it is highly desirable to have the capability of real-time. To ensure that the cutting process main-tains stable it is highly desirable to have the capability of real-time monitoring and controlling chatter. This paper describes the detection method of chatter vibration using cutting force in turning process. In order to detect a chatter vibra-tion the dynamic fluctuation of radial force is analyzed since this components is sensitive to the chatter. The envelope sig-nal of radial force has been calculated by the use of FIR Hilbert transformer and it was useful to classify the chatter signal from the dynamically unstable circumstances. It was found that the mode and the mode width were closely correlated with the chatter amplitude was well. Finally back propagation(BP) neural network have been applied to the pattern recognition for the classification of chatter signal in various cutting conditions. The validity of this systed was confirmed by the experiments under the various cutting conditions.

• 성인간호학회지
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• 제15권4호
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• pp.551-562
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• 2003

Purpose: All nurses should provide spiritual care for their clients. It is especially important to care spiritually for cancer patients facing the crisis of life. Therefore, the purpose of this study is to analyze the concept of spirituality which is one of the basic concepts for spiritual care in cancer patients. Method: The subjects of this study were 8 cancer patients; 2 Christians,3 Buddhists, and 3 persons who did not have any religion. The data was collected and analyzed by Hybrid Model. Result: The results of this study were as follows: Dimensions of spirituality(vertical dimension connected with the absolute being, horizontal dimension related to others, existential dimension related to seeking of meaning), attributes of spirituality(dynamic process strengthened in suffering due to struggle with cancer, connectedness with the absolute being or will and belief in oneself, transcendence of reality, meaning and purpose of life, future oriented), outcomes of spirituality(intrinsic, behavioral). Conclusion: The spirituality of cancer patients is manifested differently by his(her) religion, age, past experiences and burden of family, and is able to be strengthened with cancer. Therefore, nurses should recognize that diagnosis and deterioration of cancer is not only a spiritual crisis but can be a good chance for spiritual growth, as well.

• Nuclear Engineering and Technology
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• 제50권4호
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• pp.532-541
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• 2018

Decision support systems are a key focus of research on developing control rooms to aid operators in making reliable decisions and reducing incidents caused by human errors. For this purpose, models of complex systems can be developed to diagnose causes or consequences for specific alarms. Models applied in safety systems of complex and safety-critical systems require rigorous and reliable model building and testing. Multilevel flow modeling is a qualitative and discrete method for diagnosing faults and has previously only been validated by subjective and qualitative means. To ensure reliability during operation, this work aims to synthesize a procedure to measure model performance according to diagnostic requirements. A simple procedure is proposed for validating and evaluating the concept of multilevel flow modeling. For this purpose, expert statements, dynamic process simulations, and pilot plant experiments are used for validation of simple multilevel flow modeling models of a hydrocyclone unit for oil removal from produced water.

• Clinics in Shoulder and Elbow
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• 제18권3호
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• pp.172-193
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• 2015

Nowadays shoulder ultrasound is commonly used in the assessment of shoulder diseases and is as accurate as magnetic resonance imaging in the detection of several pathologies. Operator dependence is the main disadvantage of shoulder ultrasound. After adhering to a strict examination protocol, good knowledge of normal anatomy and pathologic processes and an awareness of common pitfalls, it can be used as a focused examination providing rapid, real-time diagnosis, and treatment by ultrasound-guided interventions in desired clinical situations. Also shoulder ultrasound can help the surgeon decide whether treatment will be surgical or nonsurgical. If arthroscopy is planned, sonographic findings help to counsel patients regarding surgical and functional outcomes. If a nonsurgical approach is indicated, ultrasound can be used to follow patients. This review article presents the examination techniques, the normal sonographic appearances and the main pathologic conditions found in shoulder ultrasound. And also addresses a simplified approach to scanning and ultrasound-guided intervention. Knowledge of optimal techniques, normal anatomy, dynamic maneuvers, and pathologic conditions is essential for optimal performance and interpretation of images.