• KIPS Transactions on Software and Data Engineering
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• v.2 no.8
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• pp.543-554
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• 2013

Model-Driven Development(MDD) helps developers verify requirements and design issues of a software system in the early stage of development process by taking advantage of a software model which is the most highly abstracted form of a software system. In practice, however, many software systems have been developed through a code-centric method that builds a software system bottom-up rather than top-down. So, without support of appropriate tools, it is not easy to introduce MDD to real development process. Although there are many researches about extracting a model from code to help developers introduce MDD to code-centrically developed system, most of them only extracted base-level models. However, using concept of abstract component one can continuously extract higher level model from base-level model. In this paper we propose a practical method for automatic extraction of base level abstract component from source code, which is the first stage of continuous extraction process of abstract component, and validate the method by implementing an extraction tool based on the method. Target code chosen is the source code of TinyOS, an operating system for wireless sensor networks. The tool is applied to the source code of TinyOS, written in nesC language.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.2 no.1
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• pp.109-131
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• 2007

The purpose of this study were to a) clarify the current practice of internal marketing by contracted food service management companies, b) analyze the effectiveness of current internal marketing practices. The survey was conducted between October 12 and November 2, 2002 with the 10 contracted food service management companies; 6 large, and 4 small & medium sized companies. No significant difference was existed with the categories of internal marketing. However significant differences were existed with the service education, sanitary education, periodic interviews, rewards for best employees, incentive payments, paid -leave allowances, job function allowances, and position classes including unit manager, dietician and cook of MBO. The actual administration of internal marketing strategies showed that, the significant differences were existed with education, paid-leave, and employee welfare systems among position classes. Also the significant differences were existed with all categories of internal marketing between large and small & medium sized companies. In general, small & medium sized companies score of the internal marketing performance was lower than that of large sized companies. Therefore, the segmented internal marketing strategies depending on the analysis not only demand for employees but also the size of company, were required to be an effectively and efficiently managed contracted food management companies.

• Progress in Medical Physics
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• v.13 no.1
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• pp.1-8
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• 2002

Accurate knowledge of the distribution of contamination electrons ( which comes from mainly gantry head by Compton scattering, pair production, and tray: henceforth called leptons ) at the surface and in the first centimeters of tissue is essential for the clinical practice of radiation oncology. Such lepton tends to reduce or eliminate the ‘skin-sparing’ advantage of megavoltage photon beam radiotherapy, This information is needed to prescribe a absorbed dose to a skin volume at a few millimeter depth in high energy therapeutic radiation photon beam All experiments were done with 15 MV photon beam from a dual energy linear accelerator (Clinac 1800, Varian). Field size is defined by ranged from 10.0$\times$10.0 to 30.0$\times$30.0 $\textrm{cm}^2$. The absorbed dose and distribution of leptons in therapeutic radiation beam (15 MV) are investigated by means of variable blocked beams of 30.0$\times$30.0 $\textrm{cm}^2$ and dose beam profiles partly removed leptons with a copper plate. A numerous leptons mainly are distributed as shape of broad cone in the central photon beam and leptons path length in the water are shorter than 2.5 cm because of the leptons energy having around 3.0 MeV. These results clearly appears that the subtraction of leptons from the total depth dose curve not only lower the absolute dose in the buildup region and surface dose, it also causes a shift of d$_{max}$ to a deeper depth.

• Journal of Korean Academy of Nursing
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• v.28 no.1
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• pp.81-92
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• 1998

This study is to define the caring experience of mothers with insulin-dependent diabetes mellitus children, by finding core category, contextual factors, ntervening factors, and the patterns of caring, and to velop a practice theory on it. Research method followed grounded theory methodology by Strauss & Corbin. Subjects were six mothers. whose children have had insulin-dependent diabetes mellitus for 4 months to 14 years by the interview time. They were selected by theoretical sampling. Data were collected from September, 1995 to January, 1996. Interview were done by long interview technique and observation. Each interview took 50 minutes to 2 hours. Content of interview was recorded and transcribed later. Based on the results of previous interview, content of next interview was planned until data reached to the saturation point. Results were as follows : One hundred and forty concepts were found. These concepts were grouped into thirty-three categories, and then to ten categories. Mothers with diabetic child were revealed to face “being overwhelmed by burden”. Overwhelming by burden is found to be progressed through the cycle production-coping-decrease or in crease process. Mothers showed four patterns of adaptation in caring the diabetic children. 1) If mothers felt large amount of overwhelming by burden because of difficulty of caring and unsympathizing but they had sufficient support, no condition of the child, and their coping mechanism was positive, most of them overcome with strong will, but some fell into burnout. 2) If mothers felt large amount of overwhelming by burden because of difficulty of caring, unsympathizing, insufficient support. serious condition of the child, and their coping mechanism was negative, they fell into burnout by coping with feeling. 3) If mothers felt small amount of overwhelming by burden because of little difficulty of caring and sympathizing, sufficient support. no serious condition of the child, but their coping was negative, most of them fell into burnout by coping with feeling, but some overcome. 4) If mothers felt small amount of overwhelming by burden because of little difficulty of caring and unsympathizing, sufficient support, no serious condition of the child, and their coping was positive, they overcome with strong will. On the basis of the above result, in order to help mothers take good care of their children, nursing assesment and intervention on life readjustment, and getting support should be required. Especially, through understanding mothers' personalities, individual support consistent with each of them should be required. Therefore education. counseling, mutual support and exchange of information will have to be accomplished.

• Journal of Korean Academy of Nursing
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• v.25 no.3
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• pp.441-456
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• 1995

This study was done to determine direct and in-direct nursing time in nursing units in hospital to ap-plied computer system and expect that those results contribute to measure efficiency of nursing practice and planning of nursing manpower. The design for study was a descriptive study. The study results are as follows. 1. Patients admitted to the Internal Medicine and General Surgery units were grouped into four. Group Ⅰ, 32.9% of the total patients, consisted patients whose condition was considered minor Group Ⅱ, 26.1%, was of those whose condition was considered moderate, Group Ⅲ, 41. 8%, moderate severe and Group Ⅳ, 29.2% the most severe. 2. Nursing intervention times by care type were as follows four minutes spent for suction eight minutes, for simple position change, ten minutes, for sheet change, seven minutes for a hot or cool compress, six minutes for dressing change, four minutes for Ⅰ.M. injection, six minutes for patient health education and five minutes for body temperature check. 3. Direct care time by patient group revealed the following : Group Ⅰ rquired 191.4 minutes, Group Ⅱ required 331.1 minutes, Group Ⅲ rquired 499.4 minutes, and Group Ⅳ rquired 1328.0 minutes. 4. The ratio of time for adequate nursing care and direct care time in the Internal Medicine and Goneral Surgery units was 67.4%-83.4% and 94.7%-99.3% in the Intensie Care Unit. 5. Average daily direct care time per patient was 5.5 hours in the Internal Medicine unit and 11.5 hours in the Intensive Care Unit. 6. Time spent in indirect care was 48.3 minutes for computer recording,34.8 minutes for giving and receiving patient information for shift duty, 28.0 minutes for eating and resting time, 26.6 minutes for transfering and identifying patients, 25.6 minutes for identifying Doctor's order, 23.9 minutes for recording vital signs. 7. Time spent in indirect care was 282.2 minutes by head nurses (charge nurses), 258.7 minutes by nurses and 261.6 minutes by nurse aids. 8. The average nurse's workload was 9.3 hours and daily indirect nursing time required 46.3%-50. 5% of above mentioned workload time. .9. The average daily indirect care time per patient was expected to be 57.7 minutes in the Internal Medicine unit and 3.3 hours in the Intensive Care Unit.

• Korean Journal of Community Nutrition
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• v.14 no.1
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• pp.87-99
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• 2009

The purpose of this study was to investigate the perception of foodservice managers in childcare centers and kindergartens for identifying the vulnerable areas of safety management. The foodservice managers in 1,144 of nationwide childcare centers and kindergartens were surveyed from May to October 2007 to answer a total 72 questions in areas of general characteristics, actual practice of foodservice management and safety management perception. Meals were served in 97.7% of surveyed facilities and 91.0% among them were self-operated. The hiring rate (27.8%) of dietitians in childcare centers was significantly lower than the rate (82.0%) of kindergartens. The needs of dietitian employment between childcare centers and kindergartens differed as 44.9% and 87.5%, respectively. In knowledge on food-borne illnesses, they have the wrong information in the field of season for frequent outbreak, major pathogens and foods causing food-borne illnesses. The food-borne illnesses (36.2%) were indicated as the major problem in foodservice facilities and the degree of risk exposure was considered as safe (70.1%). More than 70% of both facilities answered as sanitary in the status of personal hygiene. Only 38.0% recognized the Facility and Equipment Standard in the Childcare Law and Early Childhood Education Law. In preparation of meals and management of cooking processes, kindergarten scored significantly high compared to childcare centers (p < 0.05 or p < 0.01) while the necessity of standards was not different in both facilities. Among managers surveyed, 28.8% had taken food safety education from professional institutions and more than 80% in both facilities indicated the need of professional educations. These results suggest that it is necessary for the systematic sanitary education of foodservice managers by developing the sanitary management standard as well as the amendment of laws related foodservice in childcare centers and kindergartens.

• Korean Journal of Social Welfare
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• v.57 no.4
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• pp.119-146
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• 2005

The purpose of this study is to find out the structural and developmental characteristics of inter-organizational community network of the school social work and the characteristics of direct workers and the school social work organizations delivering services to the children in low-income families, and to identify the magnitude of efficient structure for networking for the children living in Kayang-dong. By searching out the central organization and block modeling, this study attempted to show the characteristics of inter-organizational community network for the children. The research sample was 18 organizations, and the data were collected by a survey questionnaire and analyzed by SPSSWIN 12.0 and UCINET 6.29. The main results show that the social welfare organization is the central organization in almost every dimensions(information exchange, client referral, cooperation, resource exchange) and education organizations play an important role in betweenness centrality. Also it can be evaluated that the present developmental stage of the network is collaboration. Based on the research results, implications for the future practice are discussed.

• Journal of Convergence for Information Technology
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• v.7 no.6
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• pp.35-43
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• 2017

The purpose of this study was to analyze the converged influencing factors on the stages of exercise behavior changes in shift work nurses. The subjects were 120 shift work nurses working in hospitals who understood the purpose of the study and agreed to participate in the study. Data were analyzed using frequency, percentage, mean, standard deviation, t-test, $X^2$ test, and multiple logistic regression analysis. The exercise motivation factors of shift work nurses had a significant effect on stages of exercise behavior change (${\beta}=2.480$, p=.022), health status perceptions(${\beta}=1.151$, p=.013). Social support factors (${\beta}=1.819$, p=.002) and marital status (${\beta}=-1.820$, p=.004) also had significant effects on the stages of exercise behavior change of shift work nurses. In other words, subjects with change in exercise behavior had 11.9 times higher motivation and 3.1 times higher health status perception than those without change in exercise behavior, social support was 6.1 times higher, and unmarried subjects showed 16 times showed higher than that of married subjects. Therefore, it is important to develop a strategy to practice continuous and regular exercise in consideration of the exercise motivation, social support, and health status perception of the nurses in shift work.

• Journal of the Korean Solar Energy Society
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• v.28 no.2
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• pp.64-69
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• 2008

As the grid-connected photovoltaic power conditioning systems (PVPCS) are installed in many residential areas, these have raised potential problems of network protection on electrical power system. One of the numerous problems is an Islanding phenomenon. There has been an argument that it may be a non-issue in practice because the probability of islanding is extremely low. However, there are three counter-arguments: First, the low probability of islanding is based on the assumption of 100% power matching between the PVPCS and the islanded local loads. In fact, an islanding can be easily formed even without 100% power matching (the power mismatch could be up to 30% if only traditional protections are used, e.g. under/over voltage/frequency). The 30% power-mismatch condition will drastically increase the islanding probability. Second, even with a larger power mismatch, the time for voltage or frequency to deviate sufficiently to cause a trip, plus the time required to execute a trip (particularly if conventional switchgear is required to operate), can easily be greater than the typical re-close time on the distribution circuit. Third, the low-probability argument is based on the study of PVPCS. Especially, if the output power of PVPCS equals to power consumption of local loads, it is very difficult for the PVPCS to sustain the voltage and frequency in an islanding. Unintentional islanding of PVPCS may result in power-quality issues, interference to grid-protection devices, equipment damage, and even personnel safety hazards. Therefore the verification of anti-islanding performance is strongly needed. In this paper, improved RPV method is proposed through considering power quality and anti-islanding capacity of grid-connected single-phase PVPCS in IEEE Std 1547 ("Standard for Interconnecting Distributed Resources to Electric Power Systems"). And the simulation results are verified.

• Korean Journal of Medicinal Crop Science
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• v.5 no.2
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• pp.131-138
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• 1997

Campanulaceae having the most growing areas among medicinal crops cultivated in Korea occasionally failed to establish a reasonable standing in practice. The experiment was carried out to examine the effect of prechilling (0 : 4 : 8 days), light quality (red : white : dark) and daily irradiation hours (8 : 12 : 16) after sowing on seed germination and radicle elongation of Campanulaceae (Platycodon grandiflorum : Codonopsis lanceolata : C. pjlosula) to give an information on their earlier standing establishment. Mean germination rate of P. grandiflorum was the highest but that of C. pilosula was the lowest regardless of all the treatments. 12 hours irradiation or prechilling increased to 8 days enhanced their earlier or later germination, respectively. White light increased the rate of P. grandiflorum but alleviated that of C. lanceolata regardless of the daily irradiation hours. Although prechilling eliminated such effect of white light, light quality treatment effect on their mean germination rates was influenced by period after sowing, daily irradiation hours or prechilling. On the 9th day after sowing, C. lanceolata showed the greatest radicle length, and both daily 8 hours irradiation and 8 days prechilling enforced to elongate their radicles, while P. grandjflorum and C. lanceolata more lengthened their radicles in all prechilling treatments than in no chilling but C. pilosula showed the similar result only in the 8 days prechilling.