• Title/Summary/Keyword: choice factor

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Implant overdenture treatment using several solitary attachment systems on mandibular edentulous patients (하악 무치악 환자에서 수종의 어태치먼트를 이용한 임플란트 피개의치 수복 증례)

  • Park, Mid-Eum;Shin, Soo-Yeon
    • Journal of Dental Rehabilitation and Applied Science
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    • v.31 no.3
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    • pp.242-252
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    • 2015
  • Implant overdenture treatment using several solitary attachment systems on mandibular edentulous patients. Most patients with severe residual ridge resorption report significantly more problems adapting to their mandibular denture due to a lack of comfort, retention, stability and to the inability to chew and eat. Recent scientific studies carried out over the past decade have determined that the benefits of a mandibular implant overdenture are sufficient to get retention and stability. Therefore, overdenture with implants on the mandible and attachments are considered as a treatment of choice as a favorable treatment. In this cases, with consideration for jaw relation, level of bone loss, facial support and economic factor, edentulous patients with severe residual ridge resorption are rehabilitated by complete denture on maxilla and two-implants overdenture using several solitary attachment systems on mandible.

An empirical study Influencing the Wireless Battery Charger on Choice to Repurchase Intention (무선 충전기가 스마트폰 재구매 선택을 결정하는 영향에 관한 실증적 연구)

  • Kim, Do-Goan
    • Proceedings of the Korean Institute of Information and Commucation Sciences Conference
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    • 2015.10a
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    • pp.123-124
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    • 2015
  • Recently, with the economy and the information communication technology developed, the smartphone market grows continuously. The market outlook on the wireless rechargeable technology grows rapidly so that the market size is increased about six times bigger than that of the last year, and it will grow about 18 billion dollars in 2014. Because of that, as the interest on this area out focused, many kinds of technology and new product are being exploited in this field. In this research, we aim to analyze factors influencing of the wireless battery charger on continue using intention of Smartphone. Predictor factors were selected perceived usefulness, perceived ease of use and perceived design suggested based extended the technology acceptance model. IBM SPSS Statistics 19 were employed for descriptive statistics, Smart PLS(partial least squares) was employed for confirmatory factor analysis and path analysis of casual relationship among variables and effect. This study suggests practical and theoretical implications based on the results.

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Analyzing the Instruments on core competencies of the 2015 Revised Informatics Curriculum (2015 개정 교육과정의 정보과 핵심역량에 관한 검사도구 분석)

  • Woo, HoSung;Kim, JaMee;Lee, WonGyu
    • The Journal of Korean Association of Computer Education
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    • v.21 no.2
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    • pp.49-58
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    • 2018
  • Competency is an extended concept rather than knowledge and skill, which means the ability to efficiently and rationally solve various problems. This study focuses on the core competencies presented in the 2015 Revised Informatics Curriculum and aims to analyze the constitution method and composition of domestic and overseas Instruments that can measure core competencies. As a result of analyzing 12 Instruments developed by the countries and organizations, nine Instruments measure two or more competencies based on computing thinking, information culture literacy, and cooperative problem solving ability. Three Instruments have one competency were measured. Ten instruments were computer based tests, and 50% of the items were developed by two or more of multiple choice item, subjective item, and descriptive item. It is important to note that this study provided a crucial step in the development of Instruments to diagnose competencies to be developed into informatics science education.

On the Efficient Three-Dimensional Inversion of Static Shifted MT Data (정적효과를 포함한 자기지전류 자료의 효율적인 3차원 역산에 관하여)

  • Jang, Hannuree;Jang, Hangilro;Kim, Hee Joon
    • Geophysics and Geophysical Exploration
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    • v.17 no.2
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    • pp.95-103
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    • 2014
  • This paper presents a practical inversion method for recovering a three-dimensional (3D) resistivity model and static shifts simultaneously. Although this method is based on a Gauss-Newton approach that requires a sensitivity matrix, the computer time can be greatly reduced by implementing a simple and effective procedure for updating the sensitivity matrix using the Broyden's algorithm. In this research, we examine the approximate inversion procedure and the weighting factor ${\beta}$ for static shifts through inversion experiments using synthetic MT data. In methods using the full sensitivity matrix constructed only once in the iteration process, a procedure using the full sensitivity in the earlier stage is useful to produce the smallest rms data misfit. The choice of ${\beta}$ is not critical below some threshold value. Synthetic examples demonstrate that the method proposed in this paper is effective in reconstructing a 3D resistivity structure from static-shifted MT data.

Explicit Design of Uniformly-Rough Pipe on a Slope with Pumping Power (균일조도 동력경사관의 양해법 설계)

  • 유동훈;강찬수
    • Water for future
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    • v.29 no.3
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    • pp.163-176
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    • 1996
  • When a pipe is deployed on a sloping bed, pumping power required for a discharge can be estimated immediately without any iteration process with an explicit form of a friction factor equation. Pumping power being given, however, traditional method requires an iteration process for the solution of discharge and pipe diameter even for the uniformly-rough pipe. You (1955b) has suggested explicit equations for the estimation of discharge and pipe diameter particularly for the cases of pipe on a slopintg bed without pumping and pipe on a horizontal bed with a pumping power. Based on his approach and previous results, the present researchers have developed explicit equations of discharge and pipe diameter for the general case of pipe on a sloping bed with a pumping power. The equations of boundary criteria are also presented in explicit way which render proper choice of various equations suitable for the flow condition between five characteristics. Verification studies are also carried out by applying the explicit equations to a practical example.

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Analysis of COD fraction and change of COD in nitritation reactor using various wastewater (다양한 하수를 대상으로 유기물 성상과 질산화 반응조 내 유기물 변화)

  • Im, Jiyeol;Gil, Kyungik
    • Journal of Wetlands Research
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    • v.17 no.4
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    • pp.421-427
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    • 2015
  • In ASM model, organic matters are classified according to their characteristics and general classification into COD and BOD cannot satisfy conditions required by ASM. In this study, it was performed to study classification of organic matters required by ASM on the basis of microorganisms' respiration rate subject to wastewater and sludge treatment. As results of analysis of the organic matter's appearance, it was found that there were some differences in composition of organic matters between wastewaters. It is considered that it is an important characteristic of wastewater that should be understood in treating wastewater in each process. Therefore, it is considered that appearance of organic matters in each wastewater identified by this study will be used as important basic data for operation of municipal wastewater treatment plant. It was identified that SS was an important factor affecting nitrification through organic matter and ammonium nitrogen change analysis according to reaction time in the nitrification. It is considered that the nitrification has close relationship with choice of optimal retention time.

Growth Characteristics of Kentucky Bluegrass on Different Rootzone Foundations (지반 유형에 따른 켄터키 블루그래스의 생육특성)

  • 이혜원;정대영;심상렬
    • Journal of the Korean Institute of Landscape Architecture
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    • v.31 no.6
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    • pp.95-103
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    • 2004
  • A turfgrass rootzone foundation is one of the important iufluences on the growth of cool-season turfgrass such as Kentucky bluegrass, which is usually grown on korean golf courses and athletic fields in Korea. This study was carried out to evaluate the growth of Kentucky bluegrass on 4 types of turfgrass root-zone foundations: a 2cm thickness of Sand 90%+Peat humus 8%+Zeolite 2% mixture on a subsoil base (C), a 20cm thickness of Sand 90%+Peat humus 8%+Zeolite 2% mixture (S), a 20cm thickness of Sand 45%+fine sand(a sort of Bomyungsa) 45%+Peat humus 8%+Zeolite 2% mixture (S+F), and a 20cm thickness of Sand 45%+fine sand(a sort of Bomyungsa) 45%+Peat humus 8%+Zeolite 2% mixture on a 20cm thick drainage layer (S+F(G)). Visual ratings of Kentucky bluegrass on the C foundation were low throughout the experiment when compared to S, S+F, and S+F(G) foundations, which contained high contents of sand with a high water infiltration rate. However, poor growth of Kentucky bluegrass in the summer of 1991 on the S foundation was likely to be caused by a too high water infiltration rate (185.8cm/hr). The growth of Kentucky bluegrass on the S+F(G) was good while the growth was a little weak at the developing stage on the S +F foundation. If the cost had to be considered when constructing golf courses and athletic fields, The S+F foundation without the drainage layer would be the best choice in terms of low cost and good quality of Kentucky bluegrass compared to the S+F(G). In this result, the infiltration rate was regarded as the most influential factor to the growth of Kentucky bluegrass on rootzone foundations.

KTX Interior Noise Reduction Performance Comparison Using Multichannel Active Noise Control for Each Section (다중채널 능동소음제어기법을 이용한 KTX 실내소음의 구간별 저감성능 비교)

  • Jang, Hyeon-Seok;Kim, Young-Ming;Lee, Tae-Oh;Lee, Kwon-Soon
    • The Transactions of The Korean Institute of Electrical Engineers
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    • v.61 no.1
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    • pp.179-185
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    • 2012
  • Since the eco-era is getting closer, the importance of noise reducing in the passenger cars of high-speed train is very important. The active noise control is best choice to reduce low frequency noise because the passive one is too heavy for high speed trains where weight is so critical. Also ANC is able to reduce the ambient noise when the environmental-factor changes. To reduce a three-dimensional closed-space sound field like a car of a high-speed rail is hard to do using single channel ANC control system. We used multi-channel FXLMS algorithm which calculation speed is fast and the secondary path estimation is possible in order to take into account the physical delay in electro acoustic hardware control loudspeaker and power amplifier. Firstly, we have measured interior noise of KTX and estimated noise path in KTX test-bed. However there was some problem related to algorithm divergence and increasing the filter order. We have made a simulation of interior environment of KTX car by using three frequency bands of 120Hz, 280Hz, 360Hz as the most important for KTX ANC system. During this research the interior noise reduction of KTX car was made by using the multi-channel FXLMS algorithm. Reduction performance was evaluated and compared each other for open space section and tunnel section. in-situ experiment for the KTX noise reduction by proposed ANC was performed based on data obtained in simulation and they were compared for open space section and tunnel section as well.

The Effectiveness of Facilitation Education for Call Quality of Medical Representative in Pharmaceutical Industry (제약회사 영업사원의 면담 품질(Call Quality) 향상을 위한 퍼실리테이션(Facilitation) 교육법의 효과)

  • Im, Hyung Sik;Kang, Shin Kook;Lee, Kwang-Su;Hong, Jin Tae
    • The Korean Journal of Health Service Management
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    • v.13 no.4
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    • pp.215-228
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    • 2019
  • Objectives: The purpose of this study is to figure out that Facilitation education can affect significant improvement in sales staff's understanding of precise pharmacokinetics, benefits, safety, and side effects, etc. and eventually lead to increase in call after taking courses. Methods: Data utilized in this study was collected from 413 sales staffs who completed Facilitation course for 5 months. This study used statistical methodologies, paired t-test, exploratory factor analysis, and logistic regression model in order to identify change in Call and after Facilitation courses. Results: The result shows that there are statistically significant increases in CALL quality after Facilitation courses based on the result of pared t-test. Moreover, Facilitation education is more effective in average time of one-time detail than average number of visits per day and average number of doctors per day from the result of logistic regression. Conclusions: In order for MR in pharmaceutical company to improve CALL quality, the education for precise pharmacokinetics, benefits, safety, and side effects is necessary. In addition, various professional training required for detail, including disease education, Selling Skills education, and literacy education are essential. Therefore, Facilitation education would be desirable choice in terms of pharmaceutical marketing strategy.

Identifying the Customers′ Menu Selection Attributes in Food Court-Styled B & I Foodservice Operation (푸드코트형 산업체 급식소에서의 고객의 메뉴 선택 속성 규명)

  • 이해영;안선정;양일선
    • Korean Journal of Community Nutrition
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    • v.9 no.2
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    • pp.183-190
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    • 2004
  • This study was designed to identify how customers considered menu selection attributes on menu choice, and so the instrument for measuring that question was developed and menu selection behavior types were analyzed by customers' characteristics. Cronbach's alpha to assess the internal reliability of the developed scales was 0.8361, which indicated to be highly reliable. Construct validity was assessed by principal components factor analysis with a Varimax rotation to identify underlying dimensions of menu selection and then four factors explaining 55.618% of the total variance were found. These factors were labeled as 'quality of meals', 'attractiveness of meals', 'healthfulness of meals' and 'variety of meals', respectively. As a result of analysis on menu selection factors, 'quality of meals'(3.82 out of 5) was the highest consideration followed by 'variety of meals'(3.51), 'healthfulness of meals'(3.49) and 'attractiveness of meals'(3.34), so that menu marketing approaches in the perspective of quality of meals would do lead customers' selection rates, customer satisfaction and then sales highly. Frequent visitor selected menu indifferently but customers who were interested in food and menu highly, who perceived meals' quality highly, and who were satisfied with overall foodservice did with concern. On the basis of these results of study for the target of food court-style B & I foodservice operation, which was introduced as an ideal model in future foodservice market by the concept of 'customer's selection right', the following study related with customers' meal patterns and perception of foodservice by menu selection attributes would be able to predict the chances for success of food court-style foodservice operations.