• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.30 no.5
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• pp.445-458
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• 2012

The objective of GPS control surveying is ultimately to determine coordinate sets of control points within targeted accuracy through a series of observations and network adjustments. To this end, it is of equivalent importance for the accuracy of these coordinates to be realistically represented by using an appropriate method. The accuracy representation can be quantitively made by the variance-covariance matrices of the estimates, of which features are sensitive to the mathematical models used in the adjustment. This paper deals with impact of functional and stochastic modeling techniques into the accuracy representation of the GPS control surveying with a view of gaining background for its standardization. In order to achieve this goal, mathematical theory and procedure of the single-baseline based multi-session adjustment has been rigorously reviewed together with numerical analysis through processing real world data. Based on this study, it was possible to draw a conclusion that weighted-constrained adjustment with the empirical stochastic model was among the best scheme to more realistically describe both of the absolute and relative accuracies of the GPS surveying results.

• Journal of Korean Academy of Nursing
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• v.37 no.5
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• pp.736-743
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• 2007

Purpose: The purpose of this study was to develop a scale of free nursing home adjustment for the elderly in Korea. Method: The developmental processes were construction of a conceptual framework, development of preliminary items, verification of content validity, twice data gathering, verification of construct validity, and reliability of final items. The first 53 preliminary items were obtained through review of literatures about nursing home adjustment and in depth interviews with 5 staffs of nursing home. These items were reviewed by five specialists for content validity and 39 items were chosen. The first data was collected from 107 elderly residing in 3 nursing homes and the second survey was from 147 residents who were living in five nursing homes. Finally this data was analyzed for construct validity and reliability. Result: There were 23 final items which were sorted into 5 factors. The factors were identified as 'Relocation distress symptom'(8items), 'Making friends'(4items), 'Acceptance of new residence'(6items), 'Difficulty in group life'(3items), and 'Having self-worth'(2items). The cumulative percent of variance was 53.466%. The reliability of the scale, Cronbach's alpha was .837. Conclusion: The result of this study could be used for measuring nursing home adjustment of the elderly. However, for further validity and reliability, repeated researches are needed.

• International Journal of Precision Engineering and Manufacturing
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• v.7 no.1
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• pp.18-23
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• 2006

Cutting by a high speed laser cutting machine is one of most effective technologies to improve productivity. This paper has presented the cutting characteristics and optimal cutting conditions in a high speed feeding type laser cutting machine by using Tacuchi method in the design of experiment. An L9(34) orthogonal array is adopted to study the effect of adjustment parameters. The adjustment parameters consist of cutting speed, laser power, laser output duty and assistant gas pressure. The surface roughness of sheet metal is regarded as a quality feature. Analysis of variance is performed in order to evaluate the effect of adjustment parameters on the quality feature of laser cutting process.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.5 no.1
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• pp.66-72
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• 1987

It is well known that a triangulateration net is superior to a trilateration net or triangulation net in a same configuration. In general, to explain this nature is not easy because the large residuals and reference variance are revealed in the adjustment of a heterogeneous network. In this paper the precision and the reliability of network are discussed, and the considerations of simultaneous adjustment are covered A practical example shows that the concept and criteria of reliability give better estimate than the precision in heterogeneous network.

• Journal of the Korean Society for Precision Engineering
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• v.21 no.6
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• pp.77-83
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• 2004

Cutting by a high speed laser cutting machine is one of most effective technologies to improve productivity. This paper has studied to obtain the cutting characteristics and optimal cutting conditions in a high speed feeding type laser cutting machine by Tacuchi method in design of experiments. A Lf(34) orthogonal array is adopted to study the effect of adjustment parameter. The adjustment parameters consist of cutting speed, laser power, laser output duty and assistant gas pressure. And the quality feature is selected as surface roughness of sheet metal. Variance analysis is performed in order to evaluate the effect of adjustment parameters on the quality feature of laser cutting process.

• Child Health Nursing Research
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• v.23 no.3
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• pp.375-384
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• 2017

Purpose: This study was done to identify the level of adjustment to hospital life, hospitalization recognition and hospital-related fear by school-aged children, and investigate the influence of hospitalization recognition and hospital-related fear on the hospital life of these children. Methods: Participants were 112 three to six grade students who were hospitalized from 3 to 7 days at one of two children's hospital. Date were collected from September 2015 to March 2016. Data were analyzed using frequency, percentage, mean, standard deviation, multiple regression. Results: The mean score for adjustment to hospital life was $3.43{\pm}0.40$ of 5, for hospitalization recognition, $2.98{\pm}0.46$ of 4 and for hospital-related fear, $1.37{\pm}0.28$ of 3. Factors affecting adjustment to hospital life were hospital-related fear (${\beta}=-.28$, p=.002) and hospitalization recognition (${\beta}=.27$, p=.003). These factors explained 17% of the variance in adjustment to hospital life. Conclusion: Results indicate that adjustment to hospital life by school-aged children is not sufficient enough for them to cope with illnesses and hospitalization. Therefore, to improve adjustment to hospital life by school-aged children, nursing interventions that focus on increasing hospitalization recognition and decreasing hospital-related fear need to be developed.

• The Journal of the Korea Contents Association
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• v.12 no.1
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• pp.438-446
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• 2012

The purpose of this study was to analyze the predictors of impulsive behavior, self esteem, and depression on school adjustment of adolescents. The original data were collected using questionnaire from the sample of 415 middle school students selected by convenient sampling. The data were collected from October 1 to November 30, 2010. The data was conducted by using a correlations coefficient and the hierarchical regression. The major findings of this study were as follows. Firstly, the school adjustment correlates with the impulsiveness(r= -.53), the self esteem(r= .51), and the depression(r= -.56). Secondly, the school adjustment was significantly associated with academic performance, impulsiveness, self esteem, and depression, which explained 51.8% of variance in school adjustment. These results may contribute to a better understanding of impulsiveness, self esteem, depression, and school adjustment of adolescents. Therefore, programs for prompting adolescents's school adjustment should be a planned based on results of the study.

• The Journal of the Korea Contents Association
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• v.13 no.1
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• pp.322-332
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• 2013

This study was done to investigate emotional awareness, emotional expressiveness, ambivalence over emotional expressiveness, and college student adjustment, to analyze the factor affecting college student adjustment. The subjects were 159 freshman nursing students. Data were collected through structured questionnaires from May 20 to June 10, 2012. Data analysis was done using descriptive statistics, independent t-test, ANOVA, Pearson correlation coefficient, and multiple regression with SPSS WIN v 18.0. Positive correlation were found between college student adjustment and mood monitoring as well as mood labeling. On the other hand, ambivalence over positive emotional expressiveness and ambivalence over negative emotional expressiveness were significantly negative correlation with college student adjustment. In addition, mood monitoring, ambivalence over positive emotional expressiveness, mood labeling, and ambivalence over negative emotional expressiveness accounted for 31.8% of variance in college student adjustment. The results of this study suggest that programs for promoting emotional awareness and reducing ambivalence over emotional expressiveness are important for college adjustment in freshman nursing students.

• The Journal of the Korea Contents Association
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• v.15 no.3
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• pp.219-228
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• 2015

The purpose of this study was to examine the relationships between anger expression, social supports, and adjustment to college life among nursing students. A convenience sample of 266 students in two colleges participated in the study. Data were analyzed using t-tests, ANOVA, Pearson correlation coefficients, and multiple stepwise regression. The mean score for adjustment to college life was above average. The mean score for adjustment to college life differed significantly according to students' reasons for applying to college and perceived health status. Adjustment to college life significantly correlated with anger expression and social supports. Multiple stepwise regression analysis showed that anger expression (Anger-Out, Anger-In, and Anger-Control), social supports, and perceived health status explained 27.1% of the variance in adjustment to college life. The study findings suggest that interventions intended to promote nursing students' adjustment to college life should focus on improving anger management, social supports, and perceived health status.

• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.9 no.1
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• pp.47-54
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• 1991

In this study, the accuracy of three dimensional location was improved by self calibration bundle method with additional parameter, which is to correct systematic error through detection and elimination of the gross error from updated reference variance for observation values in photogram-metry. In this study, with the result of comparing accuracy of each method, correcting systematic error is more effective after gross error detection and when observation values are contained more than two gross error the point with maximum correlation value is detected by masking effect of least square adjustment.