• Journal of Magnetics
• /
• v.21 no.2
• /
• pp.209-214
• /
• 2016

This paper analyzes the magnetic property according to the machined shape of steel material with non-oriented silicon steel (50PN470/50A470), that is most commonly used in the design of electrical equipment. Toward this end, specimens were produced and divided into Bar-Specimen (Epstein Frame Tester) and Ring-Specimen (Toroidal Ring Tester). The characteristics of the electrical Silicon steel were measured using the instruments solely dedicated to measuring each specimen. The core loss of the Bar-Specimen, which is commonly used, was found to be less than that of the Ring-Specimen. This is a very important design factor in achieving the objectives of improving the product efficiency and predicting the performance of electrical equipment. It serves as a critical point of view in order to reduce the error between design value and product value. A comparative analysis was conducted regarding various characteristics (Hysteresis, B-H characteristic, Iron loss, Minor loop, Coercive force, Residual magnetic flux density, etc.) of the electrical silicon steel considered in the design of the electrical equipment according to the specimen.

• Proceedings of the Korea Concrete Institute Conference
• /
• 2004.11a
• /
• pp.793-796
• /
• 2004

In domestic, various repair materials and method systems to keep up with these reinforced concrete deteriorated due to salt damage, carbonation. chemical decay et. being developed and applied. However, present polymer cement mortar applied to section restoration system cause the problem of long-term working and economica] efficiency. because that is divided into two process of liquid corrosion prevention agent and polymer cement mortar. In this background, accelerated test with due regard to $3\%$ NaCl soaking and autoclave cure was performed to confirm steel bar corrosion prevention properties of polymer cement mortar mixed with corrosion prevention agent of powdered type. In conclusion. we confirmed application possibility and excellency of steel bar corrosion prevention properties of polymer cement mortar mixed with corrosion prevention agent of powdered type comparing general polymer cement mortar applied to section restoration system of present study.

• The Journal of the Society of Korean Medicine Diagnostics
• /
• v.9 no.2
• /
• pp.10-24
• /
• 2005

Background and Purpose: Feeling the pulse is based on the pulse condition and alteration to observe the condition of the human body's health and by using a healthy person's pulse as a standard we are able to analyze the patient's pulse to find the attacked channel and collateral, viscera and bowels and understand the pathology such as diseases caused by exogenous evil, disorder of internal organs, and seven modes of emotions. Observing the color and shade of the patient's face, listening carefully to the sound of the patient, and feeling the pulse are methods in accordance with Su Wen 'Plain Questions', 'The Classic on Difficulty' (5th century B.C. Bianque), 'The Classic of Sphymology' (280 A.D. Wang Xi), 'Pulse Formulas' (1189 A.D. Cui Jiayan), and is systematically edited for those who have started studying to easily reach the profound state. Therefore, 'The Elementary Course for Medicine' has been used from ancient times as the textbook for diagnostics. Methods: In this Study, we will inspect commonly used pulse feeling methods, the inch, bar, cubit thesis, the viscera and bowels thesis from The Elementary Course for Medicine and inquire the difference of the text from 'Plain Questions of Huangdi's Internal Classic', 'Treatise on Febrile Diseases', 'Classic on Difficulty'. Results and Conclusion: 1. In 'The Elementary Course for Medicine' the site of the wrist along the pulsation of the radial artery is divided into inch, bar, cubit and has defined the inch, bar, cubit crossways. 2. In 'The Elementary Course of Medicine' the inch, bar, cubit for the left hand and right hand is subjected to each viscera and bowel. By assigning the left hand's inch, bar, cubit to the cardial orb, the hepatic orb, the renal orb, and the right hand's inch, bar, cubit to the pulmonic orb, the splenic orb, the vital gate it has been able to feel the pulse for each viscera and bowel by using the interpromoting and interacting relation of the five evolutive phases.

• Journal of the HCI Society of Korea
• /
• v.6 no.1
• /
• pp.27-33
• /
• 2011

The battery lifetime is one of the most important factors in product qualities of mobile devices such as mobile phones, MP3 players, PMP. It is used to be displayed by a 'battery bar' icon with uniformly divided three or four blocks. However, several manufacturers of mobile phones have assigned uneven time ratios to each battery block because they believe that it can make users feel more long in battery lifetime. In this study, two experiments were performed. The first is to verify the effects of the uneven time ratios in each battery block on users' cognitive awareness of battery lifetime. The second is to investigate whether the compatibility between battery displays and actual time ratios affects the users' time perceptions. The results show that as low battery bar is maintained for a long time, users tend to be aware of the battery lifetime shorter. On the contrary, maintaining full battery status longer does not affect the users' time perception. These results can be applied as the guidelines for determining proper time ratios in designing the battery bar indicator of mobile devices.

• Journal of Technologic Dentistry
• /
• v.29 no.2
• /
• pp.173-180
• /
• 2007

There was a great problem about the deposition between materials of a different kind at the beginnings of the introduction of porcelains, however, thereafter the deposition efficiency was settlded to the sufficient level of all user thanks to effort to have studied by many scholars and clinical authorities. But in a clinical process, as the difference of designs has an effect on fractures of porcelains, this researcher divided them into 4 groups of A: 1 mm, B: 2 mm, C: 3 mm, and D: 4 mm, and made 40 pieces to each 10 as the test samples to consider a length axis of tooth for studies in accordance with a position of a finishing line to meet between porcelain and metal at the contact point at the adjacent side to a metal porcelain. The sample materials are those to be use at the open market and the test samples wer completed by the same manufacturing technique to that of existent metal porcelain tube. s a result of the strength test on fractures, the average value is as in the following, A: 1 mm - 8.5bar, B: 2 mm - 10.5bar, C: 3 mm - 14.3bar, and D: 4 mm - 15.0bar. In case of the metal porcelain tube, the more faraway to process parts of metal and porcelain from the contact point of adjacent side has the stronger strength of fractures, Accordingly, the research shows that it had better to keep off more than 3 to consider a ledngth axis of tooth.

• Transactions of the Korean Society of Mechanical Engineers A
• /
• v.40 no.3
• /
• pp.305-315
• /
• 2016

This study aims to develop a robot vision control scheme using the Newton-Raphson (N-R) method for the uncertainty of circumstance caused by the appearance of obstacles during robot movement. The vision system model used for this study involves six camera parameters (C1-C6). First, the estimation scheme for the six camera parameters is developed. Then, based on the six estimated parameters for three of the cameras, a scheme for the robot's joint angles is developed for the placement of a slender bar. For the placement of a slender bar for the uncertainty of circumstances, in particular, the discontinuous robot trajectory caused by obstacles is divided into three obstacle regions: the beginning region, middle region, and near-target region. Then, the effects of obstacles while using the proposed robot vision control scheme are investigated in each obstacle region by performing experiments with the placement of the slender bar.

• Korean Journal of Acupuncture
• /
• v.23 no.2
• /
• pp.155-166
• /
• 2006

Objectives: This study was undertaken to determine if Plantaginis Semen(PS) has a protective effect against $CCI_4$ induced hepatoxicity in Rats. Methods: The experimental groups were divided into Normal group (untreated Group), Control group $(group\;treated\;with\;CCI_4)$, Sample 1 (group treated with 0.1 ml Plantaginis Semen herbal acupuncture in both sides of $G\bar{a}nsh\bar{u}\;(BL_{18})$ after $CCI_4$ treating) and Sample 2 (group treated with feeding of 1 cc Plantaginis Semen extraction after $CCI_4$ treating). Rats were administered orally $CCI_4\;(0.1\;ml/kg)$ for 4 days. In experiments for PS effect, rats of Sample 1 group received 0.lml herbal acupuncture of PS extraction in both sides of corresponding $G\bar{a}nsh\bar{u}\;(BL_{18})$ of human body for 3 days after treated $CCI_4$. Rats of Sample 2 group feeded PS extraction (1cc) for 3 days after treated $CCI_4$. Variation of weight and biochemical assays (AST, ALT, LDH, ALP, total cholesterol, triglyceride, total protein, albumin) were performed. Results: In Control group, $CCI_4$ increased serum AST, ALT, LDH, ALP, total protein, albumin and decreased weight, total cholesterol, triglyceride. Sample 1 and Sample 2 significantly decreased serum AST, ALT, LDH, ALP, total protein, albumin as compared with Control group. Conclusion: These results indicate that PS could be used in prevention and treatment of hepatoxicity. However, precise mechanisms of PS protection remain to be determined.

• Journal of Korean Medicine Rehabilitation
• /
• v.18 no.2
• /
• pp.81-96
• /
• 2008

Objectives : This study was performed to investigate inhibitory effects of Gamipalmul-tang($jiaweibawu-t{\bar{a}}ng$) on the hematological and histological changes of obese mice. Methods : C57BL/6 mice were divided into four groups (normal group, high fat diet with normal saline, high fat diet with reductil, high fat diet with Gamipalmul-tang($jiaweibawu-t{\bar{a}}ng$) and fed for 8 weeks. Body weight change, final increase of body weight, ALT, AST, creatinine, total cholesterol, LDL-cholesterol, HDL-cholesterol, triglyceride, glucose, cell viability by cytotoxicity, the expression of ${\beta}3AR$ in 3T3-L1 cell, the expression of leptin, ${\beta}3AR$ and serotonin in adipocyte tissue and size of adipocyte were observed in 8 weeks. Results : 1. In 3T3-L1 cell. the expression of ${\beta}3AR$ was increased significantly. 2. The final increase of body weight in obese-mouse were decreased significantly. 3. The level of AST, ALT were decreased significantly. 4. The level of LDL-cholesterol was decreased significantly and HDL-cholesterol was increased significantly. 5. The levels of triglyceride was decreased and leptin and glucose were decreased significantly. 6. In adipocyte tissue, the expression of ${\beta}3AR$ were increased significantly. 7. In adipocyte tissue, the expression of leptin and serotonin were decreased significantly. 8. The size of Adipocyte was decreased. Conclusions : On the basis of these results, we concluded that Gamipalmul-tang($jiaweibawu-t{\bar{a}}ng$) has inhibitory effects in rat.

• Physical Therapy Rehabilitation Science
• /
• v.9 no.4
• /
• pp.287-294
• /
• 2020

Objective: This study aimed to investigate the effects of an ultrasound-based bar graph proportional to the quadriceps muscle thickness as a real-time visual feedback training tool in the elderly. Design: Cross-sectional study. Methods: Twenty-four elderly persons participated in this study and were randomly divided into three groups: oral training group (n=8, group 1), ultrasound imaging group (n=8, group 2), and graph group (n=8, group 3). In the pre condition, all participants performed maximal voluntary isometric contraction (MVIC) of the quadriceps with knee extension three times with oral training. In the post condition, group 1 performed MVIC of the quadriceps with oral training, group 2 performed MVIC of the quadriceps with real-time visual feedback using ultrasound imaging, and group 3 performed MVIC of the quadriceps with real-time visual feedback using a bar graph proportional to the quadriceps muscle thickness, three times for all groups. Muscle thickness, activity (mean, peak), tone, stiffness, logarithmic decrement, relaxation, and creep were measured in both conditions in all participants. Results: Visual feedback with a bar graph showed significant effects on muscle thickness, mean muscle activity, and peak muscle activity compared with oral training and visual feedback with ultrasound imaging (p<0.05). Conclusions: Isometric training of the quadriceps with real-time visual feedback using a bar graph proportional to the quadriceps muscle thickness may be more effective than other methods in improving muscle thickness and muscle activity. This study presented a tool that can help increase muscle thickness in the elderly.

• Proceedings of the ESK Conference
• /
• 1996.10a
• /
• pp.91-96
• /
• 1996

A keyboard is deveoped which can be used for Korean stenograph. Korean characters are of combinaton type : a Korean character is composed of upper or lower consonants and a vowel. This keyboard can process more than one character at a time by pressing corres- ponding buttons together. The space-bar is divided into 6 buttons for lower consonants. If some reserved words for special stings are entered, the corresponding strings are auto- matically sent to the computers. The keyboard can also be served as a normal one.