• Journal of the Korean Home Economics Association
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• v.44 no.7 s.221
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• pp.177-188
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• 2006

This study evaluated 26 elderly residents living independently in 4 group homes for their abilities in daily living and analyzed their behaviors of space occupancy and activities of daily living. The aim of the study was to identify the relationships between the physical environments of the group homes and the daily activities of the residents. The results of this study are summarized as follows. 1) Most residents in the group home considered bathing and cooking to be the most difficult of their living activities. The residents were categorized into "Independent," "Semi-dependent" and "Dependent" groups, on the basis of their ADL and IADL scores, and individual groups were examined. On ADL scorelt was shown, then, that 65.4% of the residents were was independent in ADL, but there was no any significant difference in IADL between the independent, semi-dependent and dependent groups. In addition, there was a difference in ADL and IADL among the groups. The independent group's residents were shown to be independent in ADL and IADL, whereas the but those of the semi-dependent and dependent groups' residents were lower in IADL than in ADL. 2) When their behaviors of space occupancy were examined, it appeared that the independent group showed a different space sharing pattern among individual residents, with a wide range of behavior of space occupancy. Meanwhile, The semi-dependent group mostly shared a common space with simple activities of daily living while no any service low leisure program was provided. However, the dependent group mainly consisted of residents who had a low level of independence in ADL and IADL, so that their behaviors of space occupancy were entirely negative.

• International Journal of Human Ecology
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• v.6 no.1
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• pp.117-129
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• 2005

The purpose of this research was to study opinions on elderly housing and attitudes toward the problems related to elderly lives, which were due to dependence or independence in later life. The survey was conducted among middle-aged people in their fifties, living in Seoul. The final sample included 498 respondents. Since the statistical analysis was focused only on independent and dependent groups, total cases for the analysis were 373. The results of this study were as follows. Firstly, the group that was more independent in later life tended to be healthier, lived with a husband or wife, had no children, and had more monthly income and assets. Secondly, the group that was more independent in later life believed that they had the sole responsibility of resolving later life issues. The group that was more dependent believed that their family, not themselves, must resolve their later life problems. The independent group wanted to continue their work or enjoy leisure. Thirdly, the group that was more independent about elderly housing stated that they were responsible for it, while the other group stated that their family was. There were no significant differences between the two groups in terms of general idea, and social interest. However, the independent group answered that more development and management of elderly housing were needed. The expected living arrangement in their later lives was similar. Also, there were no differences between the two groups in living with family or the demand for service from elderly housing.

• Communications for Statistical Applications and Methods
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• v.31 no.4
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• pp.365-375
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• 2024

Diverse methods to evaluate the prediction model of a time to event have been proposed in the context of right censored data where all subjects are subject to be susceptible. A time-dependent AUC (area under curve) measures the predictive ability of a marker based on case group and control one which are varying over time. When a substantial portion of subjects are event-free, a population consists of a susceptible group and a cured one. An uncertain curability of censored subjects makes it difficult to define both case group and control one. In this paper, our goal is to propose a time-dependent AUC for a cure rate model when a censoring distribution is related with covariates. A class of inverse probability of censoring weighted (IPCW) AUC estimators is proposed to adjust the possible sampling bias. We evaluate the finite sample performance of the suggested methods with diverse simulation schemes and the application to the melanoma dataset is presented to compare with other methods.

• Journal of Gifted/Talented Education
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• v.25 no.1
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• pp.77-93
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• 2015

The purpose of this study was to explore the problem solving strategy for Goldberg machine tasks of the gifted students in elementary science depending on the cognitive style(tendency to field-dependent and field independent). It was aimed to provide suggestions for the features and differences of the problem solving strategies of the gifted students in elementary science according to their cognitive styles. A total of 16 students, from the gifted class of P elementary school in Hwaseong were sampled for the research, cognitive styles Test was conducted to divide the students in teams, and the teams were classified according to cognitive style tendencies to five groups of field-dependent group, weak field-dependent group, mixed group, weak field-independent group and field-independent group. The Goldberg device task given was to make a Goldberg device within the angle framework of (Figure) 1, for a bead to start from the starting point and to reach the final point the last. The results are as follows: First, regarding the plan for producing the device, the stronger the field-independent tendency, they established more specific strategy-reflected plan; the stronger the field-dependent tendency, they established less specific strategy-reflected plan. Second, all cognitive style groups took a limited period of time into consideration, to fabricate the devices for the ball to arrive the last using a fine adjustment rather than many devices. Third, the field-independent group used a lot of logical reasoning; the field-dependent group used a lot of intuitive thinking. Fourth, the field independent group properly utilized strategies such as cooperation and role allocation; the field-dependent group tried to solve the task personally rather than cooperatively with poor role allocation. Fifth, the intermediate mixed group solved the problem better than the inclined groups such as field-dependent or field-independent groups.

• Journal of Korean Institute of Industrial Engineers
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• v.12 no.2
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• pp.33-44
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• 1986

This research is concerned with group scheduling problems in multi-stage manufacturing system with dependent setup time. The objective of the research is to develop and evaluate a heuristic algorithm for determining group sequence and job sequence within each group to minimize total tardiness in multi-stage manufacturing systems with sequence dependent group setup time. The group scheduling heuristic algorithm is developed and evaluated by comparisons with twenty-seven problems with the known optimum solutions and 144,000 random schedules of a large variety problems. The results indicate that the proposed heuristic algorithm gets the same optimum solutions for the problems and also provides the good solutions in comparison with the random schedules of the large variety problems. A numerical example is given to illustrate the heuristic algorithm.

• Journal of Oral Medicine and Pain
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• v.17 no.2
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• pp.99-108
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• 1992

The purpose of this study was to evaluate the polymorphosms in parotid salivary proteins of the patients with diabetes mellitus. Saliva from the parotid glands was collected from 94 healthy Korean adults who were live in Kwang-ju and from 33 diabetes mellitus patients who had more than 140mg/dl of fastingblood sugar for one week. Diabetes mellitus patient group was subdivided to insulin dependent diatetes mellitus (IDDM) and non-insulin dependent diabetes mellitus (NIDDM). In the saliva collected from the parotid glands, parotid acidic protein(Pa), proline-rich protein(Pr) and double band protein(Db) were analyzed to evaluate the distribution of phenotype using alkaline slab polyacrylamide gel electrophoresis. The results were as follows : 1. The parotid acidic protein (Pa) was found more frequently in the diabetes mellitus patient group than in the control group, but the difference was not statistically significant. 2. The Pr(1-2) type was found more frequently in the control group, but the Pr(1-1) and Pr(2-2) type were found more freqnently in the diabetes mellitus patient group and the difference of phenotypic distribution was statistically significant between the two groups. (p<0.05) 3. The parotid acidic protein(Pa) and Pr(1-2) type were found more frequently in the noninsulin dependent diabetes mellitus (NIDDM) patients than in the insulin dependent diabetes mellitus patients, though the difference was not statistically significant.

• Journal of the Korean Home Economics Association
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• v.46 no.6
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• pp.75-87
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• 2008

The purposes of this study were to examine the attitude of undergraduates toward money and the differences in dining-out behavior among three groups of subjects divided by attitude toward money. Self-administrated questionnaires were completed by 387 undergraduates and data were analysed by frequency analysis, chi-square, t-test, one-way ANOVA, factor analysis, reliability analysis, duster analysis and discriminant analysis. Results of study were as follows. There appeared six different attitudes of money among the undergraduates investigated: money as a means of seizing power, money as a life pursuit, money as a tool for rational consumption, money as a barometer of success, money as a cause of anxiety, and distrust. The undergraduates showed several different attitudes of money according to gender, major, age and pocket money. Cluster analysis divided subjects into three groups by attitude toward money : low dependent group, moderately dependent group and high dependent group. Three groups of subjects classified by attitudes of money were different from one another in dining-out behavior as well. The low money-dependent group mainly spent less than 5,000 won on a dining-out, and relied on their own experience and recommendation from others on a dining-out information. In contrast, the high money-dependent group spent 20,000 won or more on dining-out, and the distribution of subjects acquiring dining-out information from various channels in that group was significantly higher than other groups.

• Journal of Arbitration Studies
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• v.31 no.2
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• pp.99-118
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• 2021

The participants in this study were university students, who are millennials and familiar with various devices and SNS enabling hyper connection, such as smartphones, the Internet, and the Internet of Things. People are sustaining their relationships with others by using the latest technology and cutting-edge devices at will. Some purchases are made at offline stores through online information, but products are checked through offline stores and purchased online. The MZ generation, which does not always have a fixed and constant behavioral response pattern, was considered a participant in this study because the response pattern may vary depending on one's tendency to avoid uncertainty. As a result of experimenting with the MZ generation, similar results were found in all dependent variables. Advertorial and general ads treated as independent variables affected the participants' tendency to avoid uncertainty. In other words, uncertainty avoidance tendency and interaction effect were found as a result of verifying the effects on the dependent variable of ads type. In an advertorial, the group with low uncertainty avoidance tendencies showed higher dependent variable effects than the group with high uncertainty avoidance tendencies; in general ads, uncertainty avoidance tendencies were higher. The higher group showed higher dependent variable effects than the lower group. Therefore, the group with a low tendency to avoid uncertainty has a high level of dependent variable effects in the advertorial, and the group with high uncertainty avoidance tendency performs self-interpretation in general ads.

• Bulletin of the Korean Chemical Society
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• v.17 no.1
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• pp.61-65
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• 1996

The semiempirical time-dependent Hartree-Fock PM3 calculations have been performed on three polyene systems. In order to study the nonlinear optical properties, we calculated the frequency-dependent first-, second-, and third-order polarizabilities of thiophene-, furan-, pyrrole-nitro polyene systems. The PM3 predicted average and longitudinal polarizabilties increase in the order: thiophene- > pyrrole- > furan-nitro polyene systems. The PM3 predicted limiting average second-order polarizabilities show the order: pyrrole- > furan- > thiophene-nitro polyene systems. The average and longitudinal third-order polarizabilties have the following order: pyrrole- > thiophene- > furan-nitro polyene systems. In these trends, we sugest that pyrrole group is the best donor group among the three polyene systems.

• Toxicological Research
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• v.11 no.2
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• pp.205-213
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• 1995

This study was undertaken to investigate the effects of organic solvents on xenobiotic metabollzing enzyme system in vivo by meaas of experimental conditions i.e. (1) single group which was treated by benzene (B), toluene (T) and xylene (X), respectively, (2) combination group which was treated by mixture of benzene+toluene (BT), benzene+xylene (BX), and toluene+xylene (TX), respectively, (3) mixture group which was treated by benzene+ toluene+xylene mixture (M), and to interpreat the interaction between the organic solvents metabolizing enzymes. 1. The contents of cytochrome P-450 in liver microsomes were increased (p < 0.01) in organic solvents treated groups, and the contents of cytochrome P-450 were increased by following order of B < T < M < BT=BX < X < TX. 2. The activity of cytochrome P-450 dependent AHHase was significantly higher in organic solvents treated groups than in control group (p < 0.01), and the activity of AHHase was increased by following order of B < T < BT=BX=TX=xylene < M. 3. The activity of NADPH P-450 reductase was significantly higher in organic solvents treated groups than in control group (p < 0.01), and the order of M < combinated group < X < T