• Title/Summary/Keyword: preparation

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Structural Relationships among Engineering Self-Efficacy, Outcome Expectations, Interests, Learning Persistence and Career Preparation Behavior of Engineering Students (공과대학생의 학업지속과 진로준비행동에 영향을 미치는 공학효능감과 결과기대, 흥미간의 구조적 관계)

  • Lee, Myunghwa;Lee, Jeongmin
    • Journal of Engineering Education Research
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    • v.18 no.4
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    • pp.13-25
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    • 2015
  • The purpose of this study was to investigate structural relationships among engineering self-efficacy, outcome expectation, interest, learning persistence, and career preparation behavior of engineering students. Participants (n=428) completed measures of engineering self-efficacy, outcome expectations, interests, learning persistence, and career preparation behavior. Results from structural equation modeling analysis were found to support the proposed model which included learning persistence and career preparation behavior, influence from engineering self-efficacy, outcome expectations, and interests. In addition, major persistence intention and career preparation behavior of engineering college students are influenced by the direct and indirect effects on engineering self-efficacy, interest, and outcome expectations. The implications of the findings on practice for Korean engineering college students are discussed.

A Formulation Study on the Combined Preparation of Nitroxynil and Levamisole for Subcutaneous Injection (Nitroxynil과 Levamisole의 피하 주사용 복합제제의 설계에 관한 연구)

  • Oh, Soon-Gyun;Oh, Kyoung-Hee;Kim, Chong-Kook
    • Journal of Pharmaceutical Investigation
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    • v.24 no.1
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    • pp.33-40
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    • 1994
  • In order to develop a broad-spectrum veterinary anthelmintic, a combined preparation of nitroxynil and levamisole was formulated for subcutaneous injection. The preformulation studies on solubilization, physicochemical stability and toxicity of combined preparation were performed. The combined preparation of nitroxynil-N-ethylglucamine and levamisole base could be solubilized up to 50.3%(w/v) of active ingredient concentration in propylene glycol/water system. Injectable solutions were most stable at $4^{\circ}C$. Local toxicities such as flare and edema were not shown when the usual dose of the combined preparation was injected subcutaneously to the rats.

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The Efficacy of Retirement Planning Counseling on Retirement Preparation Awareness and Behavior (노후준비 인식과 행동에 대한 노후 생활설계 상담의 효과)

  • Sung, Heayoung
    • Journal of Family Resource Management and Policy Review
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    • v.17 no.4
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    • pp.171-187
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    • 2013
  • Individuals are increasingly required to take more responsibility for their own retirement. The purpose of this study was to investigate the efficacy of counseling for retirement planning on awareness and behavior related to retirement preparation. The data came from 3,561 adults who received counseling from National Pension Service. The major findings can be summarized as follows : (1) There were significant changes in awareness and behavior for retirement preparation after receiving counseling services ; (2) young age, type of counseling (comprehensive diagnostics for retirement preparation), and counseling method (face-to-face) had a positive effect on changes in awareness and behavior ; and (3) expertise and adequacy of counseling, as well as the attitude of counselors, had an influence on changes in awareness and behavior.

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POSS/Polyurethane Hybrids and Nanocomposites: A Review on Preparation, Structure and Performance

  • Diao, Shuo;Mao, Lixin;Zhang, Liqun;Wang, Yiqing
    • Elastomers and Composites
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    • v.50 no.1
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    • pp.35-48
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    • 2015
  • Polyhedral oligomeric silsesquioxane (POSS) is an important inorganic-organic hybrid material with a three-dimensional structure. Polyurethane (PU) is a widely applied polymer that has versatile properties with the change of two phase structure. When POSS is incorporated into PU by physical or chemical methods, many properties can be greatly improved, such as mechanical properties, thermal stability, biodegradation resistance, and water resistance. This paper reviews the recent progress in preparation, structure, and performance of POSS-modified polyurethane from the viewpoint of physical blending and chemical modification.

A Study about Preparation of old age of Korean dental technicians (한국 치과기공사의 노후 준비에 관한 연구)

  • Lee, Sun-Kyoung
    • Journal of Technologic Dentistry
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    • v.37 no.3
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    • pp.145-155
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    • 2015
  • Purpose: The Purpose of the study is to investigate the need for the preparation of old age of Korean dental technicians. Methods: A total of 778 dental technicians were selected by proportional stratified by region compared to extraction sampling from a list of Korea dental technician Association in 2012. The final sample size was 386. Questionnaires consisted of 9 general characteristics, recognition of old age 4, and preparation of old age 9 on a Liken 5 scale. Cronbach's alpha was 0.784 in the study. All statistical analyzed were performed using SPSS 14.0(Statistical Packages for Social Science Ver. 14.0. Chicago, IL, USA). Results: Factors affecting the aging preparation is gender, age, clinical career, work place(p<0.001). Conclusion: This study suggested that preparation for old age of Korean dental technicians was very important and the preparation must be connected with the social welfare policy.

Properties of Polymer-Modified Surface Preparation Mortars with Mineral Admixtures for Sewage Treatment Structures (하수처리구조물용 광물질 혼화재 병용 폴리머 혼입 바탕조정재의 특성)

  • Park, Seung-Min;Kim, Wan-Ki
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2017.11a
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    • pp.30-31
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    • 2017
  • The objective of this study is to evaluate the performance of polymer-modified surface preparation mortars with pozzolanic materials for corrosion prevention method in deteriorated sewage treatment structures. The prepackaged-type surface preparation mortars are prepared with a polymer-binder ratio of 10%, ground granulated blast furnace slag contents of 0, 15, 30%, a fly ash content of 15%. And, the specimens are tested for workability, adhesion in tension, water absorption, crack and impact resistance. As a result, the prepackage-type surface preparation mortars for sewage treatment structure are satisfied with quality requirements by KS F 4716, Japan sewage work agency(JS) and JIS A 6916 for surface preparation mortars.

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Tooth preparation and Intraoral scanning for successful CAD/CAM restorations (성공적인 캐드캠 수복을 위한 치아형성과 구강스캔)

  • Bae, Jin Woo;Son, Song Ae
    • The Journal of the Korean dental association
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    • v.57 no.7
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    • pp.380-391
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    • 2019
  • In recent years, with the introduction of various restorative materials, restorations using CAD/CAM equipment have been increasing in the esthetic dentistry. The critical steps in the fabrication of indirect restorations with CAD/CAM equipment are proper cavity preparation and making accurate impressions. The process of tooth preparation for CAD/CAM restoration should include a mechanical understanding of milling. In addition, during tooth preparation, the clinician should be familiar with additional equipment and techniques for obtaining the convenience. In order to obtain an accurate oral scan, the clinician should understand the limitations of the oral scan and be skilled at techniques for obtaining a successful image when making oral scans. This article focused clinical guidelines for the preparation of CAD/CAM restorations and introduced clinical methods for making successful impression of oral scans in narrow and deep tooth cavity areas.

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The Effects of College Life Adaptability on Career Preparation Behaviors of College Students: Mediating Effects of Major Satisfaction, Job Stress, and Self-Directed Learning

  • Il-Hyun, Yun
    • International Journal of Advanced Culture Technology
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    • v.10 no.4
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    • pp.245-254
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    • 2022
  • This study is a study to empirically verify the mediating effect on college life adaptation and career preparation behavior of college students. The purpose of this study is to empirically analyze the multi-mediated effects of major satisfaction, job stress, and self-directed learning. For this study, 216 university students were enrolled. For the collected data, SPSS Process macro was used. The result is as follows. First, there were multiple parallel mediating effects and multiple serial mediating effects on major satisfaction, job stress, and self-directed learning between college life adaptability and career preparation behavior. Second, the path of simple mediation and double mediation effect was found between college life adaptation and career preparation behavior. Based on the research, the necessity of revitalizing the program for revitalization of teaching activities and industry-academic cooperation activities in the major field and improvement of career preparation behavior and university life adaptation ability and follow-up research were suggested.

TEM sample preparation of microsized LiMn2O4 powder using an ion slicer

  • Jung Sik Park;Yoon‑Jung Kang;Sun Eui Choi;Yong Nam Jo
    • Applied Microscopy
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    • v.51
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    • pp.19.1-19.7
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    • 2021
  • The main purpose of this paper is the preparation of transmission electron microscopy (TEM) samples from the microsized powders of lithium-ion secondary batteries. To avoid artefacts during TEM sample preparation, the use of ion slicer milling for thinning and maintaining the intrinsic structure is described. Argon-ion milling techniques have been widely examined to make optimal specimens, thereby making TEM analysis more reliable. In the past few years, the correction of spherical aberration (Cs) in scanning transmission electron microscopy (STEM) has been developing rapidly, which results in direct observation at an atomic level resolution not only at a high acceleration voltage but also at a deaccelerated voltage. In particular, low-kV application has markedly increased, which requires a sufficiently transparent specimen without structural distortion during the sample preparation process. In this study, sample preparation for high-resolution STEM observation is accomplished, and investigations on the crystal integrity are carried out by Cs-corrected STEM.

The Effect Analysis of Aging Preparation Between National and Private Medical Workers (국가 · 민간의료기관 근로자간의 노후준비 영향 분석)

  • Shim, Hyun-Jin;Lee, Il-Hyun;Rhee, Hyun-Sill
    • The Journal of the Korea Contents Association
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    • v.13 no.10
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    • pp.365-374
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    • 2013
  • The purpose of this study is to find out the differences in between national and private medical institutions' perception towards aging, and to analyze how their different perceptions effect each of their later life preparation. A total of 783 questionnaires were distributed among national and private medical institution workers. Frequency analysis, t-test, hierarchical regression analysis was conducted from the collected data via SPSS 21.0. The results were the following. Firstly, there was a partial difference in their perception of aging, government policy satisfaction and later life preparation. National medical institutions were better than private medical institutions in all three terms. Also, perception of aging and government policy satisfaction were higher-than-average in both institutions, but in later life preparation, both scored lower-than-average. Secondly, the factors affecting preparation for aging were significantly different between these two institutions. Also, how each factors affected later life preparation was partially different. In conclusion, effects of factor was difference in aging preparation between national and private medical institutions workers. We need to provide as basic data for education and policy making for aging preparation.