• Title/Summary/Keyword: Time adjustment

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Handover Ranging Power Adjustment Using Uplink Channel Information in IEEE 802.16e/m

  • Kim, Ji-Su;Kim, Jae-Hyun
    • ETRI Journal
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    • v.32 no.5
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    • pp.823-826
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    • 2010
  • This letter proposes a handover ranging power adjustment scheme to improve handover performance. Incorrect ranging power can degrade handover performance due to the increased handover latency; therefore, the proposed scheme exploits the uplink channel information to adjust the uplink handover ranging power. Simulation results demonstrate that the proposed scheme reduces call outage probability by 33% compared to that of the conventional scheme. It also improves the number of users who satisfy the system requirements for handover interruption time.

Estimation of Air Travel Demand Models and Elasticities for Jeju-Mainland Domestic Routes (제주-내륙 간 국내선 항공여객수요모형 및 탄력성의 추정)

  • Baek, Seung-Han;Kim, Sung-Soo
    • Journal of Korean Society of Transportation
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    • v.26 no.1
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    • pp.51-63
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    • 2008
  • Jeju-Mainland demand for air passenger is variated by the season because most of the demands stem from the leisure travel. This research is to estimate the econometrics demand models(A simple time series model and the partial adjustment model) and elasticities of each models for the Jeju-Mainland domestic routes air travel market using the time series aggregate data between the year 1996 and 2005. As the result of estimating, income elasticity was evaluated to be elastic(1.55) and fare elasticity was inelastic(-0.49${\sim}$-0.59) for A simple time series models. In the partial adjustment model's case, income elasticity was evaluated to be inelastic(0.51) in short-run whereas it was evaluated to be elastic(1.88) in long-run. Fare elasticity was evaluated to be inelastic in short-run(high-demand season: -0.13, slack season: -0.20) and long-run(high-demand season: -0.48, slack season: -0.72).

Differences between Major Satisfaction, University Life Adjustment, Self-Esteem and Career Identity according to the Time of Department Selection of Students in the Department of Occupational Therapy at One University (일 대학 작업치료학과 학생의 학과선택 시기에 따른 전공만족도, 대학생활적응, 자아존중감, 진로정체감의 차이)

  • Chung, Kyoung-A;Cho, Ji-Hyun
    • Journal of the Korea Convergence Society
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    • v.6 no.5
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    • pp.143-155
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    • 2015
  • The purpose of this study is to examine the differences between major satisfaction, university life adjustment, self-esteem, career identity according to the time of department selection of students in the department of occupational therapy. Frequencies, descriptive statistics, chi-square test, ANOVA was conducted using IBM SPSS Statistics 22. The major satisfaction and career identity have statistically significant difference according to the time of department selection. As the time of department selection was earlier(in high school), major satisfaction and career identity turned out to be higher than other times(before application period or application period). Thus, in order to effective life guidance and career guidance for the students in the department of occupational therapy after admission, the carrer programs that convergent the characteristics of the department of occupational therapy are needed.

Efficiency of occlusal and interproximal adjustments in CAD-CAM manufactured single implant crowns - cast-free vs 3D printed cast-based

  • Graf, Tobias;Guth, Jan-Frederik;Diegritz, Christian;Liebermann, Anja;Schweiger, Josef;Schubert, Oliver
    • The Journal of Advanced Prosthodontics
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    • v.13 no.6
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    • pp.351-360
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    • 2021
  • PURPOSE. The aim of this study was to evaluate the efficiency of occlusal and interproximal adjustments of single implant crowns (SIC), comparing a digital cast-free approach (CF) and a protocol using 3D printed casts (PC). MATERIALS AND METHODS. A titanium implant was inserted at position of lower right first molar in a typodont. The implant position was scanned using an intraoral scanner and SICs were fabricated accordingly. Ten crowns (CF; n = 10) were subject to a digital cast-free workflow without any labside occlusal and interproximal modifications. Ten other identical crowns (PC) were adjusted to 3D printed casts before delivery. All crowns were then adapted to the testing model, simulating chair-side adjustments during clinical placement. Adjustment time, quantity of adjustments, and contact relationship were assessed. Data were analyzed using SPSS software (P < .05). RESULTS. Median and interquartile range (IQR) of clinical adjustment time was 02:44 (IQR 00:45) minutes in group CF and 01:46 (IQR 00:21) minutes in group PC. Laboratory and clinical adjustment time in group PC was 04:25 (IQR 00:59) minutes in total. Mean and standard deviation (±SD) of root mean squared error (RMSE) of quantity of clinical adjustments was 45 ± 7 ㎛ in group CF and 34 ± 6 ㎛ in group PC. RMSE of total adjustments was 61 ± 11 ㎛ in group PC. Quality of occlusal contacts was better in group CF. CONCLUSION. Time effort for clinical adjustments was higher in the cast-free protocol, whereas quantity of modifications was lower, and the occlusal contact relationship was found more favourable.

Dynamic Weight Adjustment Algorithms for Deriving Stacking Policies of Automated Container Terminals (자동화 컨테이너터미널의 장치 위치 결정을 위한 동적 가중치 조정 알고리즘)

  • Kim, Young-Hun;Park, Tae-Jin;Ryu, Kwang-Ryel
    • Proceedings of the Korean Institute of Navigation and Port Research Conference
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    • 2007.12a
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    • pp.255-256
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    • 2007
  • In case of inappropriate stacking position of the container taking in container yard, the working time for the container would be delayed in taking out because of the occurrence of the re-handle and the increase of the crane moving time. We have to take into account a variety of elements like the crane interference, the container group and stacking height in order to determine the optimal stacking position and decide the weight reflecting the importance of these criteria. We propose the dynamic weight adjustment algorithm for the stacking policy criteria employing the online search in this research.

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The Influence of Academic Self-Efficacy, Critical Thinking Disposition and Problem Solving Ability on Nursing Freshmen' College Adjustment in the Distance Education During COVID-19 (코로나19 원격 교육에서 간호대학 신입생의 학업적 자기효능감, 비판적 사고 성향, 문제해결능력이 대학생활 적응에 미치는 영향)

  • Ahn, Sung Mi
    • Journal of Digital Convergence
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    • v.18 no.10
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    • pp.315-323
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    • 2020
  • The purpose of this study was conducted to investigate factors influencing college adjustment on nursing freshmen in the distance education during COVID-19. A final sample 165 nursing freshmen was selected from S city, between 31 August and 4 September 2020. Using SPSS program t-test, one-way ANOVA, Pearson's correlation analysis and multiple regression analysis were performed. Factors that influenced college adjustment age, education at the time of admission, motivation of department choice, scholastic achievement. College adjustment showed a positive correlation with academic self-efficacy, critical thinking disposition, problem solving ability. These factors affecting the college adjustment of the subjects were with an explanatory power of 37.7%. Nursing freshmen need to method of class and student guidance that take these factors into account in the distance education during COVID-19.

Ecological Factors Affecting School Adjustment of Low-Income Adolescents Attending Community Child Care Center (저소득가정 청소년의 학교적응과 생태학적 영향요인: 지역아동센터 이용 청소년을 중심으로)

  • Park, Jiyoung;Park, Youngsook;Lee, Jeongeun;Kim, Soobin
    • Child Health Nursing Research
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    • v.23 no.2
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    • pp.158-167
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    • 2017
  • Purpose: The purpose of this study was to investigate the ecological factors influencing school adjustment of adolescents from low-income families. Methods: Secondary data analysis was performed using data of 1,321 low-income adolescents in 123 regions found on the Survey on Service Satisfaction with Community Child Care Center. Results: The results of multi-level analysis identified the factors influencing school adjustment of low-income adolescents as follows: individual-level factors were gender, grade in school, and emotional problem; an interpersonal-level factor was family structure; organizational-level factors were length of time attending center and satisfaction with the service of the center; community-level factors were region and perception of community. Conclusion: The results suggest that low-income adolescents' adjustment to school is influenced not only by individual factors but also by diverse environmental factors. Community factors suggest that more education support systems and leisure facilities for adolescents need to be built in small and medium cities. Strategies to enhance positive perception of community are also needed for this population. Further, it is necessary to develop multi-level interventions to improve the school adjustment of adolescents from vulnerable social groups.

The Effect of Sexual Rehabilitation Education on the Knowledge and Adjustment of Sexual of Spinal Cord Injury Clients (성 재활 교육이 척수장애인의 성 지식과 성 적응에 미치는 효과)

  • Kim, Eun-Kyung;Lee, Hyang-Yeon
    • The Korean Journal of Rehabilitation Nursing
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    • v.3 no.2
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    • pp.127-140
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    • 2000
  • The purpose of this study is to identify the effect of sexual rehabilitation education on the knowledge and adjustment of sexual of spinal cord injury clients by the method of nonequivalant control group pretest-posttest group. The data were collected from Jan. 19 though Feb. 16, 2000. The experimental group was 26 spinal cord injury client from one rehabilitation center, and the control group was 26 spinal cord injury client from two rehabilitation center. Sexual rehabilitation education was done with manuals, videotapes and chart. Education time was 120 minutes a week for 2 weeks. The study tool was about Sexual Knowledge, designed Song, Chung Sook(1990) and SIAC(Sexual, Interest, Activity, & Satisfaction) designed Kruter, Sullivan, Siosteen(1994) translated by Kang, Hyun Sook, Koh, Jung Eun, Suh, Yeon Ok, Yee, Oon Hee(1999). The collected data were analyzed SPSS program. The Data were analyzed descriptive statistics and $X^2$ test, Pearson's Correlation Coefficient, t-test, F-test (ANOVA), Duncan's multiple comparison test. The result were as follows. 1. The first hypothesis was accepted : The group educated about sexual rehabilitation has more sexual knowledge than those of the uneducated group(t = 7.412, p = .001). 2. The second hypothesis was accepted : The group educated about the sexual rehabilitation has more adjustment of sexual than those of the uneducated group(t = 5.524, p= .001). 3. The third hypothesis was accepted: The higher sexual knowledge state, the higher sexual adjustment(r= .449, p= .003). According to results, sexual rehabilitation education helps Spinal cord Injury Clients to gain knowledge and adjustment of sexual.

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A simulation module to practice hydraulic mechanical governors and its adjustment characteristics for stability (유압기계식 거버너의 실습용 시뮬레이션 모듈과 안정도의 조정 특성)

  • Choi, Soon-Man
    • Journal of Advanced Marine Engineering and Technology
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    • v.37 no.5
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    • pp.533-540
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    • 2013
  • Prime movers in engine rooms inherently are much affected by the adjustment of their governors for the steady state and transient properties, consequently requiring that marine engineers shall be well familiar with the way to manage governor dials for normal operation. The hydro-mechanical governors basically have different control characteristics and adjustment parameters of stability from digital governors. The former include compensation mechanism using dash pot while the control algorithm of the latter is usually based on the PID action. This study is for configuring a simulation module to let trainees practice how to adjust dials for stability on hydraulic governors in the view that the practice by real governors and engines is time consuming and high cost for operation. The governor module includes the adjusting points such as speed set, speed droop, needle valve and compensation pointer with engine module of $2^{nd}$ order coupled. The results of simulation showed satisfactory responses as a training tool for the adjustment of control parameters.

An Analysis of 30 Years of Literature on the International Adjustment on of International Expatriate Managers: Bibliometric Analysis using CiteSpace (해외파견관리자의 국제적응에 관한 30년간의 문헌 분석- CiteSpace를 이용한 계량서지학적 분석)

  • Ma, Chao;Kwon, Jong-Wook;Zhang, Yong-Feng;Pan, Jing-Jing
    • Korea Trade Review
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    • v.44 no.5
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    • pp.1-16
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    • 2019
  • As the activities of global enterprises have become more globalized and the labor movement among nations has increased, many studies have been carried out on the effective adjustment of expatriate managers. By examining the literature over the past 30 years on the adjustment of expatriate managers, this study identified major research trends and presented future research directions. While prior studies have often been cumbersome, time-consuming, and dependent on the researchers' subjective judgments, this study performs a bibliometric analysis using quantitative and visualized reference materials to provide a map showing the evolution process of existing research on the adjustment of expatriates. Using the CiteSpace program, this study conducted a bibliometric analysis of 517 papers focusing on major research trends, research countries, research institutions, authors, and journals. Study results found that the study of international adjustment was mainly focused on self-directed senders, attribution adaptations, and personal characteristics. The United States, Britain, and Australia were the most represented countries, while the most influential institutions included Aarhus University, the University of Wisconsin, and Hong Kong Baptist University. As one of the leading researchers, Selmer of Orhuss University published 19 papers, followed by Luring of Orhuss University. The Journal of International Business Studies (JIBs) most frequently featured studies of overseas expatriate adjustment.