• Journal of The Korean Astronomical Society
• /
• v.33 no.3
• /
• pp.159-163
• /
• 2000

We have investigated one dimensional steady flow model of a typical magnetic flux tube in the solar transition region constrained to observed Differential Emission Measure (DEM) for the average quiet-Sun deduced by Raymond & Doyle (1981) with a flux tube geometry conforming to Doppler shifts of UV lines measured by Chae, Yun & Poland (1998). Because local heating and filling factor in the transition region are not well known, we considered two extreme cases, one characterized by the filling factor= 1 ('filled-up model') and the other set by local heating=0 ('not-heated model'). We examined how much the heating is required for the flux tube by recomputing a model through adjustment of the filling factor in such a way that 'not-heated model' accounts for the observed DEM.

• ETRI Journal
• /
• v.5 no.4
• /
• pp.17-21
• /
• 1983

Sine call handling for stored program control exchange can be regarded as finite state machine model of sequential process, the state transition concept is applied to describe its functions. Coding method of the state transition table applied to M10CN ESS call processing and concerned topics was discussed and proposed another method for reduction memory usage.

• Communications for Statistical Applications and Methods
• /
• v.21 no.2
• /
• pp.135-145
• /
• 2014

The present study surveys Bayesian modeling structure for inferences about transition probabilities of Markov chain. The motivation of the study came from the data that shows transitional behaviors of emotionally disturbed children undergoing residential treatment program. Dirichlet distribution was used as prior for the multinomial distribution. The analysis with real data was implemented in WinBUGS programming environment. The performance of the model was compared to that of alternative approaches.

• Journal of the Korean Society for Railway
• /
• v.13 no.5
• /
• pp.509-515
• /
• 2010

Primary function of a transition curve is to accomplish gradual transition from the straight to circular curve, so that curvature changes from zero to a finite value. The transition curve enhances the running safety and ride comfort of the vehicle in curve. There are a couple of transition curve such as clothoid, cubic parabola and cosinusoidal curve, etc. In this study, running behaviors of cubic parabola and cosinusoidal curve were investigated and compared by numerical analysis result using VAMPIRE program. Ride comforts for an individual transition curve were evaluated for each transition curve and running behavior and safety were also evaluated to compare the capacity of transition curves.

• Journal of Korean Academy of Nursing
• /
• v.42 no.6
• /
• pp.861-869
• /
• 2012

Purpose: The purpose of this research was to develop a scale to measure the life transition process of parents of children with autism, against the backdrop of a lack of research on this topic. Methods: Seventy preliminary items were drawn from previous qualitative research, and content validity was tested by three professors as well as three parents of children with autism. A questionnaire survey was also done between August 2011 and February 2012. Data were collected from 207 parents of children with autism and analyzed using descriptive statistics, item analysis, Cronbach's alpha, Pearson correlation coefficients, and factor analysis with the SPSS Win 15.0 program. Results: Twenty-nine items were selected to constitute the appropriate measuring scale and categorized into 5 factors explaining 63.2% of the total variance. The 5 factors were named; stages of denial (5 items), wandering (6 items), devotion (7 items), frustration (3 items), and finally acceptance (8 items). Cronbach's alpha for the 29 items was .80. Conclusion: The results of this study not only suggest assessment criteria for the life transition process of parents who have children with autism but also provide basic directions for program development to provide differentiated support and care at each stage.

• Journal of the Korean Society for Aviation and Aeronautics
• /
• v.28 no.4
• /
• pp.69-81
• /
• 2020

Since airline safety depends significantly on the role of pilot, the importance of airlines' training qualified pilots and investing in the training program grows. This study aims to analyze the determinants of the commercial airline pilot competencies during the transition course. To this purpose, one-year training evaluation results of 215 new airline pilots in the JET transition course of Company K in 2019 are studied with correlation coefficient analysis, factor analysis, ANOVA, and regression analysis. Undergraduate major and Uljin-trained pilots show higher final-stage scores in PROC, AUTO, and CRM. Due to Uljin-trained pilots' higher first-stage scores, their score increase during the course is limited. Uljin-trained pilots' MANUAL scores in the final stage are lower than those of undergraduate major and overseas-trained pilots. Influence of trained location is found greater than English competency, undergraduate GPA, and ground school scores on commercial airline pilot competency evaluation scores during the program. The results will be useful in establishing scenario-based training focusing on different background to apply competency-based training and assessment.

• ETRI Journal
• /
• v.5 no.3
• /
• pp.16-25
• /
• 1983

Increasing importance is being attached to the idea of measuring software characteristics. This paper deals with following things. First, a relation of program and flow graph is discussed. It describes a theoretic complexity measure and illustrates how it can be used to manage and control program complexity. Second, cyclomatic complexity measure is discussed. The complexity is independent of physical size and depends only on the decision structure of a program. Third, consider a knot which defines crossing point and provide the ordering of the nodes to make the transition from a two dimensional graph to a one dimensional program. A program modules that can improve FORTRAN IV program text is tested by knot counting and its control complexity is improved.

• Journal of the Korean Society of Manufacturing Process Engineers
• /
• v.19 no.6
• /
• pp.29-35
• /
• 2020

Transition Nozzles are used in industrial air-cooled heat exchangers and widely used in industrial sites as an important component in the heat energy transfer between a heat source and an actuating fluid. There is a worldwide demand for transition nozzles with various materials and shapes, depending on the use environment. This paper aims to improve the transition nozzle forging process suitable for the production of many varieties using Steps 1 to 6 of the TRIZ Methodology for Problem Solving. By utilizing the TRIZ Methodology, this study derives a method to design a variable mold, which is more efficient and can reduce costs compared with having to use several molds. To verify the suitability of the methods derived using the TRIZ technique, a forging analysis is performed on a transition nozzle using DEFORMⓇ, a commercial program for plasticity analysis, and the nozzle material is evaluated for damage as a result of deformation of the transition nozzle thickness. The derived methods can be applied to transition nozzle formation equipment to improve the efficiency of the formation process.

• The Journal of Korean Institute of Communications and Information Sciences
• /
• v.15 no.9
• /
• pp.722-728
• /
• 1990

A comppact waveguide to microstrip transition to be used for measurements of the performances of the U-band MMIC power amplifier is designed and fabricated. A Tchebyscheff ${\lambda}$/4 impedence transformer is adopted as an impedence converter of the transition. The designed transition is optimized to get Su less then -28dB over the 40-to-48GHZ band using Supper Compact program. The measured results shows that insertion loss and return loss are typically 0.3 and 25dB respectively over 40-to-47GHz.

• Journal of Digital Convergence
• /
• v.17 no.9
• /
• pp.221-229
• /
• 2019

The purpose of this study was to identify the relationships between nursing competency and emotional intelligence and nurse role transition of nursing students. Study participants were 134 nursing students of university in Chungnam province. Data were collected with the use of self-administered questionnaires from November 1 to December 10, 2018. Collected data were analyzed using the IBM SPSS 20.0 program. Nurse role transition of nursing students showed positive correlation with nursing competency(r=.79, p<.001) and emotional intelligence(r=.59, p<.001). Factors influencing nurse role transition of nursing students were nursing competency(${\beta}=.66$, p<001) and emotional intelligence(${\beta}=.22$, p=.001), which accounted 67.8%. These results indicate that various educational programs to increase nursing competency and emotional intelligence of nursing students are needed to increase nurse role transition. Studies on the effectiveness of provided programs are also needed to provide more effective programs.