• Journal of the Microelectronics and Packaging Society
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• v.26 no.4
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• pp.119-126
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• 2019

A flexible thermoelectric module, which consisted of 18 pairs of Bi₂Te₃-based hot-pressed p-n thermoelectric legs, were processed by filling the module inside with polydimethylsiloxane (PDMS) and removing the top and bottom substrates. Its power generation properties and bending characteristics were measured. With putting the flexible module on the wrist, an open circuit voltage of 2.23 mV and a maximum output power of 1.69 ㎼ were generated during staying still. On the other hand, an open circuit voltage of 3.32 mV and a maximum output power of 3.41 ㎼ were obtained with walking motion. The resistance variation of the module was kept below 1% even after applying 30,000 bending cycles with a bending curvature radius of 25 mm.

• Geotechnical Engineering
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• v.5 no.1
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• pp.27-34
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• 1989

This study presents a probabilistic analysis of the stability of homogeneous soil slopes during earthquakes. The stability of the slope is measured through its probability of failure rather than the customary factor of safety. The maximum horizontal ground acceleration is deterimined with Donovan and McGuire equation. The earthquake magnitude (m) is a random variable the Probability density function f(m) has been obtained with a use of Richter law. The potential failure surfaces are taken to be of an exponential shape (log-spiral) , Uncertainties of the shear strength parameters along potential failure surface are expressed by one-dimensional random field model. From a first order analysis the mean and variance of safety margin is osculated. The dependence on significant seismic parameters of the probability of failure of the slope is examined and the results are presented in a number of graphs and tables. On the base of the results obtained in this study, it is concluled that (1) the present model is useful in assessing the reliability of soil slopes under both static and seismic conditions: and (2) the probability of failure of a soil slope is greatly affected by the values of the seismic parameters that are associated with it.

• Journal of the Korea Convergence Society
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• v.11 no.3
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• pp.119-126
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• 2020

The purpose of this study is to identify trends in the type and method of Inertial Measurement Unit (IMU) by investigating studies on the type and method of convergence study of the IMU by systematic review. The study was conducted using PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines. 23 studies that meet the selection criteria were selected from 630 studies identified by three databases. As a result of this study, showed that various research using IMU was being conducted around the world, and the type of IMU was strap, full body suit, belt, wrist watch, shoes and glove. Among them, the number of strap-type IMUs was the largest at 11. The IMU's strengths were simplicity, real-time data collection and ease of application, which were used as measurement methods such as task, walking, and range of joint. The result of this study is expected to be used as basic data for experts in the medical and rehabilitation fields that conduct IMU research.

• Journal of Society of Preventive Korean Medicine
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• v.14 no.3
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• pp.77-92
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• 2010

Objectives : There has been little known about the Tibetan medicine in the society for Korean medicine. The aim of this study is to review the system of Tibetan medicine and compare with Korean medicine. Methods : The authors investigated several literatures that mentioned Tibetan medicine and organized in physiology, pathology, diagnostics, and treatment. And then, we interpreted the characteristics of Tibetan medicine as well as compared Tibetan medicine with Korean medicine. After that, we analyzed the commons and the differences, and also found out the meaning of Tibetan medicine. Results : The theory of Tibetan medicine is basically constituted of three elements of Lung, Tripa, and Peken in every parts of physiology, pathology, diagnostics, and treatment. Many organs of human body are compared to the fabrications of building. There is a detail explanation about the process of the development of fetus in Tibetan medicine. Tibetan medicine uses taking pulse in wrist, analysis of urine, watching of tongue, sperm, and menstruation, and etc. for diagnosis. In Tibetan medicine, regimen is prior to other treatments such as surgical treatment and medications. Conclusions : There is the oriental thought of '3' in Tibetan medicine, and esoteric buddhism is solved in Tibetan medicine. The anatomy and the diagnostics using urine, sperm, and menstruation have especially been developed in Tibetan medicine. Tibetan medicine emphasizes the feature of preventive medicine.

• The Korean Journal of Pain
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• v.20 no.1
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• pp.66-70
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• 2007

No definitive etiology or risk factors have been identified that predispose individuals to developing complex regional pain syndrome (CRPS). We experienced two cases of CRPS developed after arterial and venous puncture which were done in regular medical work. A 35-years old female patient was suffered from pain and allodynia with swelling at right hand and wrist after radial artery puncture for monitoring of blood pressure during general anesthesia. A 24-years old male patient had pain and swelling with allodynia at the right fingers and arm after median cubital vein puncture for blood sampling. They did not have proper pain management as CRPS patients in the past weeks and months after their pain occurred. They were diagnosed as CRPS and started undergoing various interventional procedures, which led to improve their pain condition. Our cases suggest that CRPS could develop without any proved tissue damage in routine medical practice. In conclusion, health care workers should be educated in knowledge about the uncommon medical condition and proper consultation to pain specialist when it happens.

• The Korean Journal of Pain
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• v.33 no.1
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• pp.54-59
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• 2020

Background: The median nerve cross-sectional area (MNCSA) is a useful morphological parameter for the evaluation of carpal tunnel syndrome (CTS). However, there have been limited studies investigating the anatomical basis of median nerve flattening. Thus, to evaluate the connection between median nerve flattening and CTS, we carried out a measurement of the median nerve thickness (MNT). Methods: Both MNCSA and MNT measurement tools were collected from 20 patients with CTS, and from 20 control individuals who underwent carpal tunnel magnetic resonance imaging (CTMRI). We measured the MNCSA and MNT at the level of the hook of hamate on CTMRI. The MNCSA was measured on the transverse angled sections through the whole area. The MNT was measured based on the most compressed MNT. Results: The mean MNCSA was 9.01 ± 1.94 ㎟ in the control group and 6.58 ± 1.75 ㎟ in the CTS group. The mean MNT was 2.18 ± 0.39 mm in the control group and 1.43 ± 0.28 mm in the CTS group. Receiver operating characteristics curve analysis demonstrated that the optimal cut-off value for the MNCSA was 7.72 ㎟, with 75.0% sensitivity, 75.0% specificity, and an area under the curve (AUC) of 0.82 (95% confidence interval [CI], 0.69-0.95). The best cut off-threshold of the MNT was 1.76 mm, with 85% sensitivity, 85% specificity, and an AUC of 0.94 (95% CI, 0.87-1.00). Conclusions: Even though both MNCSA and MNT were significantly associated with CTS, MNT was identified as a more suitable measurement parameter.

• The Korean Journal of Pain
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• v.33 no.3
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• pp.245-257
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• 2020

Background: Musculoskeletal pain is associated with obesity; however, information on factors associated with pain in adults with obesity and severe obesity is limited. The purpose of this study was to assess the prevalence of musculoskeletal pain by site and intensity of pain and associated factors in individuals with severe obesity (body mass index ≥ 35.0 kg/㎡). Methods: Baseline data from the DieTBra Trial study evaluating pain symptoms in nine body regions over the last seven days using the Nordic Questionnaire on Musculoskeletal Symptoms and Numerical Pain Scale. The variables analyzed using multiple Poisson regression with hierarchical analysis were: sociodemographic, lifestyle, food consumption, clinical, and anthropometric, and the outcome was moderate and intense pain. Results: In 150 participants, there was a high prevalence of ankle and foot pain (68.7%), lower back pain (62.7%), pain in the knees (53.3%) and upper back pain (52.0%), with a predominance of intense pain. Factors associated with pain according to specific sites were: type 2 diabetes with hand/wrist pain; sedentary time with hip pain; insomnia with pain in the hip and knee; edema in the lower limbs with pain in the lower back and ankles/feet; degree of obesity with ankle/foot pain; and percentage of total fat with ankle/foot pain. Conclusions: There was a high prevalence of pain and intense pain in individuals with severe obesity and an association with clinical variables, the degree of obesity, and sedentary lifestyle.

• Journal of the Korean Society of Clothing and Textiles
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• v.29 no.2
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• pp.254-266
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• 2005

The purpose of this study were to develop snow-board upper wear with improved functionality. The study consisted of figure out appropriate ease amount of snow-board upper wear and make products by applying it to pattern design. The results of this study were as follows : First, The results of examined the difference between naked body measurements of and basic wear. According to motion, chest circumference(4.7cm, 5.1%), back width(8.9cm, 20.7%), and waist back length(8.0cm, 18.3%) increased. Around the elbow the length increased by 4.4cm(21.9%) when it was bent 90 degrees, while it increased by 6.0cm(29.8%) when it was bent to the full(145 degree). Second, 3 snow-board upper wear were selected and evaluated their appearance, comforts, and functionality, and that of the biggest margin proved to be the best. Eases necessary for motion proved to be insufficient especially in neck, arm and wrist parts of upper clothing. Third, on the basis of the analysis of snow-board upper wear on market, 2 pieces of experimental snowboard upper wear were designed, produced, and evaluated the patterns of with different ease, and snowboard upper wear B for experiment was proved to be better, Fourth, Snowboard upper wear was produced and evaluated for experiment 2 by giving additional ease to specific parts. Therefore experiment 2 was presented pattern, ease, and size of snowboard upper wear for with snowboard upper wear with improved functionality.

• Journal of the Korean Society of Clothing and Textiles
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• v.31 no.7
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• pp.1008-1019
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• 2007

The purpose of this study was to develop an appropriate jacket pattern for elderly women over sixty years old, providing a good fit and appearance. Results were as follows: The length of the jacket was made long enough to cover the area 22.0cm below the waistline. The waist back length was made 1.7cm longer than the actual size of the waist back length. The armhole length was made 0.5cm longer than B/4, enhacing the appearance and functionality while allowing freer movement of the arms. As for the front and back interscye breadths, the front interscye breadth was made 1.7cm larger than the actual size while the back interscye breadth was only 1.0cm larger, providing the front interscye breadth more space. The bust breadth was made 10.0cm larger than the bust circumference measure(B/4+2.5cm), the waist breadth was made 6.0cm larger than the waist circumference measure(W/4+1.5cm), The hip breadth was made 12.0cm larger than the him circumference measure(H/4+3.0cm). The sleeve length was made 3.0cm larger than the arm length measure, as the sleeve length of a jacket is usually long enough to cover the ulnar styloid. The sleeve width was made 5.0cm larger than the upper arm circumference measure, as the upper arm circumference measure of the model pattern was too large than necessary, worsening the overall appearance. The sleeve cap height was set at AH/4+4.7cm. The wrist circumference of 27.0cm was set, allowing 2/3 and 1/3 for the large sleeve and small sleeve respectively.

• Journal of Biomedical Engineering Research
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• v.32 no.2
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• pp.144-150
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• 2011

The primary purpose of this study was to analyze the motion of the scaphoid, capitate, and lunate during dart-throwing motion by three-dimensional modeling. Five series of CT images of five normal right wrists were acquired from five motion steps from radial extension to ulnar flexion in the dart-throwing motion plane. Segmentation and three-dimensional modeling of bones from CT images was performed using Analyze. Distances among centroids of the scaphoid, capitate and lunate and angles between principal axes of three carpal bones were calculated to analyze the motion by using MATLAB. As the wrist motion changed from radial extension to ulnar flexion, the distance between two adjacent bones decreased. The scaphoid and lunate rotated less than the capitates during dart-throwing motion. This study reports the Three-dimensional in vivo measurement of carpal motion using CT images.