• Journal of Korea Game Society
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• v.17 no.1
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• pp.51-62
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• 2017

Game is an activity for the tension, joy and fun. Playing the manipulative button for the game, gamers have unique experience for various ways to use the button. In this study, separating the manipulability of game into the complexity and the fun of button controlling, we tried to discuss the implication about the manipulability of game for the manipulability type to use the objects in adventure game. Namely, either complicated or simple, game has fun feature and needs to design the button controlling in consideration of action characteristics.

• Journal of Technologic Dentistry
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• v.30 no.2
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• pp.57-63
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• 2008

Statement of problem: Conventional techniques for implant framework fabrication produce significant error that is inconsistent with passive-fit requirement for osseointegrated implants. One of the etiologic factors which cause the errors is a sprue which may deform the framework during solidification and contraction. Purpose: This study was aimed to evaluate objectively effect of the sprue design on the accuracy of fit of implant prosthesis. Materials and method: Three different designs were considered relative to effect of casting accuracy. The first design had straight sprues and a button of excess alloy at the non-casting end of the sprues. The second was runner bar design(with the button). The last was straight sprues design(without the button). Gold cylinder and laboratory analogue had been used to diminish variables affecting to casting accuracy. Gold alloy and pressure-vacuum casting machine had been used. Marginal gap had been measured by SEM. One-way ANOVA and Duncan test had been used for statistical analysis. Results: The first design showed $79.87{\pm}13.95{\mu}m$ marginal gap. The second and third were $40.17{\pm}15.8{\mu}m$ and $35.17{\pm}9.95{\mu}m$ respectively. Conclusion: Straight sprues without button and runner bar designs were more accurate than straight sprues with button design(P<.05).

• Proceeding of EDISON Challenge
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• 2015.03a
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• pp.496-499
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• 2015

The objective of the study is to develop selfie sticks to enhance portability and prevent error of pushing mobile phone button. The main target of selfie sticks is women and the size of selfie sticks is too big to put it in their bag. Also when people put mobile phone in a selfie stick, people push its button easily. Sometimes mobile phone is turned off or the volume is controlled because of pushing its button. The researcher focused on designing a solution that enhances portability and preventing error of pushing the button. The researcher understood structure of selfie stick. It consists of a mobile phone supporter and a length adjuster. The researcher designed the mobile phone supporter for enhancing portability and the length adjuster for preventing to push the mobile phone. The researcher designed a part which connects a mobile phone supporter with a length adjuster and made selfie stick fold. Also, sponges are partly put on the mobile supporter. It can reduce situation of pushing the mobile phone button. The selfie stick design from the study has an opportunity to distinguish using the product and carrying it and have people use the selfie stick conveniently.

• Science of Emotion and Sensibility
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• v.20 no.3
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• pp.109-118
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• 2017

This study examined the effects of button response to probe and irrelevant stimuli on P300 amplitude and lie detection rate in P300-based concealed information test. Participants underwent the P300-based concealed information test (P300 CIT) in two conditions. In one button condition participants were instructed to press the left mouse button only when the target was present. In two button condition, they were asked to press the left mouse button for target and right button for non-target. The results showed that the response time to target stimulus was not significantly different between the two conditions, and the response time to the probe stimulus was significantly longer than the irrelevant stimulus. The P300 amplitudes for the probe and irrelevant stimulus were all smaller in one button condition compared to two button condition. However, the P300 amplitude difference between the probe stimulus and the irrelevant stimulus did not show a significant difference in the two experimental conditions, and the lie detection rate did not differ significantly between the two conditions. Based on these findings, the effect of button response on P300 CIT with a short inter-stimulus interval was discussed.

• Journal of Korean Tunnelling and Underground Space Association
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• v.12 no.1
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• pp.61-73
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• 2010

The cablebolt which secures a workability and stability has been used in foreign countries as one of supporting materials with rebar rockbolt especially in construction of large underground structures. However, only the rebar rockbolt has been applied up to now to all the constructions of underground structures in Korea due to an absence of recognition of cablebolt and large underground structure projects. Consequently, the research for a performance evaluation and verification of cablebolt is very limited and only the proto-type field tests have been conducted. In this study, the cone-shaped button cablebolt is developed by modifying an existing button cablebolt. To evaluate a performance and applicability of cone-shaped button cablebolt, the laboratory pull tests are conducted and bond capacity is analyzed under a various conditions. The rebar rockbolt, plane cablebolt, and bulb cablebolt which has a similar mechanical behavior with cone-shaped button cablebolt, are also tested and their bond capacities are evaluated and compared with cone-shaped button cablebolt under the same condition. The results show that the bond capacity is in the order of (cone-shaped button cablebolt$\approx$bulb cablebolt) > rockbolt > plane cablebolt. It is found that the bond capacity of cone-shaped button cablebolt developed in this study is at least equivalent with an existing high performance cablebolt developed in foreign countries, therefore the cone-shaped button cablebolt could be used as one of supporting materials for underground structures in construction field.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.39 no.6
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• pp.575-581
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• 2015

The drill bit, which directly transmits percussive forces and torque to the rock, is the core part of a rock drilling machine. For effective drilling, the button arrangement of a drill bit should be optimized because it is the most important design factor in determining drilling efficiency. Furthermore, a quantitative method is necessary to evaluate the button arrangement for the optimization of the drill bit button. Therefore, we propose a new method for the evaluation of the drill bit button arrangement using new evaluation indices, which include the overlapped impact area, blank area, and moment. Moreover, we verify the suitability of the proposed evaluation method by applying it to the conventional button arrangement.

• Journal of Mushroom
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• v.13 no.3
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• pp.157-162
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• 2015

This study was carried out to analyze of the cause of button mushroom production decrease of Gyoengbuk province. In 1978, Agaricus bisporus was produced 48,000 ton and exported more than $50 millions. But since 2000, Domestic production of button mushroom was decreased by 70%, and button mushroom farm was also decreased by 37%. Cultivation area was increased by 6%, but Gyeongbuk Province was decreased by 30%. Especially, Production per $3.3{\ss}{\breve{S}}$ was dramatically decreased more than half. There were several causes such as rising labor and material cost, climate changes, and aging of mushroom cultivation farmers. And there was no effort to develop of domestic button mushroom cultivation equipments. One of the main reasons for this reduction was supplied to low quality of button mushroom compost to the farm.

• Korean journal of food and cookery science
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• v.33 no.2
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• pp.174-180
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• 2017

Purpose: The purpose of this study was to investigate quality characteristics and antioxidant effects on storage by temperature between new cultivar Dewdrop Pine Mushroom (Lentinula edodes GNA01) and button mushroom (Agaricus bisporus). Methods: Dewdrop Pine Mushroom and button mushroom were prepared at low storage temperature. Results: Weight loss increased with time, whereas the new cultivar Dewdrop Pine Mushroom showed a decrease of less than 4% until 15days. Hardness of new cultivar Dewdrop Pine Mushroom was reduces less than button mushroom during storage. Color change of new cultivar Dewdrop Pine Mushroom was not altered during storage. For viable cell count, new cultivar Dewdrop Pine Mushroom proliferated less than button mushroom. For antioxidant activity, polyphenol content increased with storage period of both mushrooms. The electron-donating action of new cultivar Dewdrop Pine Mushroom maintained high antioxidant activity accounting for 80% until 12 days of storage. New cultivar Dewdrop Pine Mushroom was evaluated as better than pine mushroom as it exceeded the middle of storage in sensory characteristics; such as appearance, color, aroma and overall acceptability, etc. Conclusion: In summary, new cultivar Dewdrop Pine Mushroom was stored for 12 days while button mushroom was stored for 9 days.

• 한국도로학회:학술대회논문집
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• 2002.10a
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• pp.165-168
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• 2002

• Journal of the Korean Society of Costume
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• v.50 no.7
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• pp.155-163
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• 2000

The objectives of this study were to examine how clothing design preference and clothing attitude vary according to gender of the aging. Using the data collected through interview with 200 subjects who were 60years of age and older residing at Kunsan city area in Korea. These data were analyzed by frequency and $\chi$$^2$-test. The tendency of the gender on jacket stymie preference showed that men liked the soutien collar jacket, two button sing1e Jacket, and four button double jacket, women liked two button single jacket, three button single Jacket and four button double jacket. The general preference did allot depend on the practical purchasing. Men preferred more the soutien collar jacket than the women. On the shirts pattern preference, men liked thick horizon and plaid pattern, while the women liked polk dots pattern and small flowered one. The practical clothing purchase was done by themselves directly. The important criteria depended on the appearance style like simple and smart. For the main complaining factor to purchase the clothes, men considered the color, and women complained not to have suitable shopping stores. The most of all complaining was the expensive prices.