• Journal of the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography
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• v.28 no.3
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• pp.347-352
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• 2010

There is a lack of survey standard for cross-to-nature small stream. In this research, we analyzed cross sectional survey data of Sanggachun stream, calculated variant quantity of soil, and suggested a survey interval. Descriptive analysis of cross sectional survey data shows the trend of stabilization; mean interval of survey is 14.91m(min: 7.0m, max: 39m), mean cross sectional variances are $0.82m^2$(min: $-3.80m^2$, max: $8.11m^2$) in 2004, $0.24m^2$ (min: $-5.25m^2$, max: $8.55m^2$) in 2005. Calculating results of variance quantity based on data of 65 cross sections show similar trends in 15m, 30m, 45m, 60m but different with results of 75m, 90m with Post-Hoc Test in statistical verification. We suggested standard cross sectional survey length of cross section for natural style small stream as 50m based on fitting results of standard variation of erosion and cumulation quantity by survey interval.

• The Journal of Korean Medicine
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• v.21 no.4
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• pp.93-103
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• 2000

Objective: Stress is assumed to have many effects on menstruation of highschool senior female students, and it is expected to cause many problems and low efficiency during their studies. Therefore, through analyzing the menstruation state of highschool senior female students, the effects of stress on their menstruation and their education were studied. Methods: We made a survey of 583 senior female students of 'N' highschool located in Taegu. The survey was composed of the degrees of stress they were undergoing, menstrual problems caused by stress. Results: The survey results showed that 96.7% of the candidates were experiencing stress. 51.6% of them experienced an altered menstrual cycle, and menstrual irregularity was brought out in 32.1 % among them. 18.1 % of them were experiencing dysfunctional uterine bleeding. In sustaining period of menstruation, 17.5% of them had a shortened menstruation period, and 8.9% had a prolonged period. In case of menstrual quantity, less than normal quantity was reported by 26.9% of respondents and more than normal quantity was reported by 8.8%. 26.6% of respondents reported their menstrual blood was impure and the color was dark. Blood clots were increased in 27.5% of respondents. 86.6% went through premenstrual syndrome, and 34.3% had worsened menstrual pain. Studying was affected by menstrual pain in 83.9% of respondents. Of treating the disorder, 66.2% of them said they just waited till the pain went away, and 26.9% of them said they went to a pharmacy, and 2.4% of them said they went to an oriental medical clinic. Conclusions: From the above results, it is concluded that stress has a close connection with menstrual disorders. And it affects senior highschool female students' education, while they don't take proper treatments. Hence we think that we must have a lot of concern about senior female students and they must receive proper treatments.

• Journal of the Korea Institute of Building Construction
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• v.4 no.3
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• pp.83-91
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• 2004

With labor shortage and high-wage era, the construction cost is rising and the construction business is dull, demanding the construction environment of Korea to raise profitability through major cost savings and rationalization of construction management. However, although reinforcing bar(rebar) work, which greatly effects the building's safety, endurance, and construction time, is an important phase in construction, it holds serious problem of quality and productivity deterioration due to its characteristic of intensive-labor and maintaining of old work methods resulting in poor management, and costs increase. Therefor in this study to investigate current situation and problems of rebar work and to find methods of betterment, a survey was conducted to site engineers and individuals in division of cost estimate of domestic construction company. The survey questions were on the subjects of (1) calculating rebar quantity, (2) ordering and procurement, (3) rebar cutting and bending, and (4) rebar work management. Method of improvement was sought by analyzing the results of the survey

• Journal of Fisheries and Marine Sciences Education
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• v.23 no.4
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• pp.642-647
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• 2011

In order to analyze the influence of floating marine debris (FMD) in the East China Sea (ECS), a sighting survey was conducted from July 1st to July 14th, 2009 navigating about 966 km using a training vessel "Kaya (1,737 ton)" of Pukyong National University. The sampled zones are divided into 5 transect by observation day during the survey days and again specified with 45 segments per unit hour on the survey routes. The results of distribution of FMD are as follows: 1. The quantities of FMD at the central China Sea(CE) and northern part of Taiwan(NT) were found as total mean of 90.8 ea/hr, 56.7 ea/hr, respectively, and also 36.8 ea/hr, western part of Kyushu district(WJ), 10.7 ea/hr, 8.0 ea/hr, western(OK1) and northern part(OK2) of Okinawa, respectively. 2. Temporal variation of FMD is represented by depicting the sinusoidal curve as shape as tide in CE and OK1. 3. The higher sea surface temperature (SST) is as likely as if Kuroshio current exists strongly, the less quantities are decreased. On the other hand, the coastal zone of ECS and near of Yellow Sea are increased by lower SST.

• Fashion & Textile Research Journal
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• v.23 no.4
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• pp.448-457
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• 2021

This study aimed to identify messages that induce positive product attitudes and purchase intentions among luxury consumers in online luxury sales. Message types elicited from luxury products were classified as quantity-limited, time-limited, sustainability, and personalization. A total of 150 participants were recruited through a Google survey, and all respondents were randomly assigned to respond to one of five stimuli (quantity-limited, time-limited, sustainability, personalization, and control). Participants were informed that they would be engaging in luxury online shopping and read a description about it. Results showed that message attitude, product attitude, and purchase intention were positively formed with the quantity-limited and personalization message types. Furthermore, we discovered the underlying mechanism for quantity-limited and personalization messages increasing favorable message attitudes and it affected the product attitude. Finally, it increased the purchase intention of the product. By confirming purchase intentions according to message types for luxury brands, we have expanded the scope of advertising research to include online luxury sales platforms. Since luxury online shopping is inevitable, this study suggests that the effective use of message types such as quantitylimited and personalization would improve online sales.

• Communications for Statistical Applications and Methods
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• v.16 no.4
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• pp.669-673
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• 2009

When a social scientist prepares to conduct a survey, he/she faces the problem of deciding an appropriate sample size. Sample size is closely connected with cost, time, and the precision of the sample estimate. It is thus important to choose a size appropriate for the survey, but this may be difficult for survey researchers not skilled in a sampling theory. In this study we propose a method to determine a sample size under certain assumptions when the quantity of interest is measured by a Likert scale.

• Health Policy and Management
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• v.17 no.3
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• pp.26-49
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• 2007

The purpose of this study is to analyze the equity of health care utilization by income groups in terms of both quantity and quality of care, which is measured by expenditure, type of care, and type of health care institutions. Equity in health care utilization is measured by HIwv index, based on the survey of 1,480 Gwangju-Jeonnam residents. Health care utilization in terms of the probability and quantity of outpatient and inpatient care show equitable or pro-poor inequitable distribution, whereas the distribution of health care expenditure, which can account for the quality of care, is pro-rich inequitable, implying that the better off tend to use more expensive medical care. In terms of the types of care, simple visits for basic care show equitable distribution, whereas the distribution of the utilization of traditional tonic medicine, comprehensive health examination, CT, MRI, and ultrasound is pro-rich inequitable. Utilization of general hospitals and traditional health institutions show pro-rich inequitable distribution, hospitals and dental care institutions equitable, and physician clinics and public health centers pro-poor inequitable.

• The Journal of Pediatrics of Korean Medicine
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• v.25 no.3
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• pp.57-69
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• 2011

Objectives: Purpose of this study is to analyze and to estimate which and how much genetic and environmental factors have affected on growth. Also, a method of final height prediction can be developed from this study results. Methods: Correlation analysis and categorical regression analysis were conducted between genetic and environmental factors correlated with the final adult height, through survey from 171 male. Results: Mid parental height, neonatal body weight, intake frequency of beef, chicken, milk, fruits and coffee, sleep quantity and quality during the elementary school and sleep quantity during the middle school have affected on the final adult height. And a regression equation with 0.494 for coefficient of determination was obtained. Conclusions: Mid-parental-height has the most affected on the final adult height. Among environmental factors, food and sleep have significantly affected, but exercise doesn't. Among foods, meal, beef, and milk intake have remarkably affected on the final height, and chicken and fruit also have affected in some degree, but coffee has affected badly. Among sleep habits, sleep quantity during the elementary school has the most affected, sleep quality during the elementary school and sleep quantity during the middle school also have affected in some degree on final height. The younger the age is, the more sleep have affected and sleep quantity have more affected than sleep quality. Neonatal weight also has remarkably affected on the final height. Through this analysis, the final adult height can be predicted using regression equation which covers 49.4% of genetic and environmental factors.

• International Journal of Highway Engineering
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• v.11 no.1
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• pp.85-94
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• 2009

In cost estimation of construction, several methods including quantity-per-unit costing, job costing, unit cost estimation and lumpsum estimation are being utilized in Korea. Among them, a Quantity-per-unit Costing Method is used as a standard of cost estimation in public and private works. This paper presents the realistic job-costing method on all road construction tasks through statistical analyses with field survey data to solve the problems induced by the existing quantity-per-unit costing method. Furthermore, it was found that the newly developed job costing method is able to produce a simple costing procedure and a more actual construction cost estimation by a case study, which was performed to compare particular construction costs produced by two different methods, existing quantity-per-unit costing and newly developed job costing. These methods is compared by Case-study about sub-base. In the case of Job costing method, the estimate is shorter than the other case about 50% and can make up for the weak point about instrument in the current Standard of cost estimation. And it can be depict by Job Costing method about progress of work for using by a plan about construction management.

• Journal of the Korean School Mathematics Society
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• v.8 no.2
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• pp.223-248
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• 2005

This study is to survey and analyze the opinion of teachers about the relevance of educational content in the 7th mathematics curriculum. For the purpose of this study, we analyze the result of the questionnaire survey which consists in the question about the relevance(Quantity, level, validity) of educational content in the 7th mathematics curriculum. 515 elementary school teachers, 314 middle school teachers, and 323 high school teachers are participated in this survey. 75 percent of elementary school teachers think that the educational quantity must be reduced for the relevance of educational content. So do 50 percent of secondary school teachers. Both of them think that the number of topic must be reduced for the relevance. In special, this study shows that the response rate about the object which is related with interest is very low compared with any other mathematics education objects. So, it is necessary to pay more attention to the object which is related with interest.