• Journal of Electrical Engineering and Technology
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• v.11 no.1
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• pp.227-233
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• 2016

Google Trends provides weekly information on keyword search frequency on the Google search engine. Search volume patterns for the search keyword can also be analyzed based on category and by the location of those making the search. Also, Google provides “Hot searches” and “Top charts” including top and rising searches that include the search keyword. All this information is kept up to date, and allows trend comparisons by providing past weekly figures. In this study, we present a predictive model for TV markets using the searched data in Google search engine (Google Trend data). Using a predictive model for the market and analysis of the Google Trend data, we obtained an efficient and meaningful result for the TV market, and also determined highly ranked countries and cities. This method can provide very useful information for TV manufacturers and others.

• The Korean Journal of Applied Statistics
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• v.29 no.1
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• pp.145-155
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• 2016

In this paper, we compare forecasting models for disease occurrences in elderly patients due to the weather. For the analysis, the medical data of aged patients released from Health Insurance Review and the weather data of the Korea Meteorological Administration are weekly and regionally merged. The ARMAX model, the VARMAX model and the TSCS regression model are considered to analyze the number of weekly occurrences of some diseases attributable to climate conditions. These models are compared with MSE, MAPE, and MAE criteria.

• Journal of Korean Society for Atmospheric Environment
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• v.19 no.2
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• pp.231-245
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• 2003

Hourly PM$_{10}$ concentrations measured at 11 sites in Seoul and 10 sites in the large cities over South Korea for the period from March 1995 to February 2000 are analyzed to examine annual trend and monthly variations of the PM$_{10}$ concentrations. Further analysis has been carried out by using the one year data from March 1999 to February 2000 to see the seasonal variation, diurnal variation and weekly variation of the seasonally averaged PM$_{10}$ concentrations at each site. Weekly variations of the CO concentrations at the same sites for the same one year period are compared with that of the PM$_{10}$ concentration. There is no significant annual trend in the variation of the PM$_{10}$ concentration at all the sites analyzed. The seasonal and monthly mean concentrations show a minimum concentration in summer and alternative maximum concentration in spring and winter for most sites. The diurnal variation of the seasonally averaged mean PM$_{10}$ concentrations is strongly affected by traffic loads and meteorological conditions. The weekly variation of seasonal averaged concentrations of CO and PM$_{10}$ shows a high concentration for weekdays in spring, autumn and winter while high concentration for weekends in summer.nds in summer.

• Journal of the Korean Home Economics Association
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• v.38 no.10
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• pp.143-156
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• 2000

The purpose of this study were to compare the job satisfaction of married salaried women with that of self-employed, and to identify the determinants of job satisfaction of both of them. The sample consisted of 176 salaried women and 123 self-employed from data of 1998 Korea Household Panel Study, and analyzed into Frequencies, Percentile, t-test, $\varkappa$$^2$-test, and Multiple Regression. The findings showed that self-employed had larger proportion of home-based worker, worked more hours, and had more earnings than the salaried, and that the job satisfaction of salaried worker were higher than that of self-employed. The determinants of job satisfaction of total working women were educational level, perception of present economic status, health status, number of eamers, weekly working hours, and their income. In case of salaried worker, educational level, health status, number of earners, weekly working hours, and their income had effect on their job satisfaction, while the factors contributing job satisfaction of self-employed were health status, region, weekly working hours, and income.

• Journal of Families and Better Life
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• v.30 no.5
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• pp.75-88
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• 2012

The purpose of this study was to investigate the influences of variables related to family and employment on work family spillover in working wives with children. Korean Longitudinal Survey of Women & Families(KLoWF; 2008) of Korea Women's Development Institute was used in this study. The subjects of this study were 733 working wives with children. For data analysis Cronbach ${\alpha}$, and multiple regression were performed. The results show that, first, among variables related to family, family role awareness and marital satisfaction influence on work-family negative spillover, and values on familism and husband's weekends housework hour influence on family-work negative spillover in working wives with children. Second, among variables related to employment, career satisfaction, wife's weekly working hour, husband's perception on employment of wife and sexual discrimination influence on work-family negative spillover, and career satisfaction, husband's perception on employment of wife, employment stability, husband's monthly income and husband's weekly working hour influence on family-work negative spillover in working wives with children. Third, among variables related to family and employment, wife's weekly working hour, family role awareness, marital satisfaction husband's perception on employment of wive, husband's weekly working hour, and career satisfaction influence on work-family negative spillover, and values on familism and wife's weekly working hour influence on family-work negative spillover in working wives with children.

• Journal of Korea Port Economic Association
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• v.32 no.4
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• pp.1-13
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• 2016

This study attempts to establish a precise forecast model for the container inventory demand of shipping companies through forecasts based on equipment type/size, ports, and weekly system dynamics. The forecast subjects were Shanghai and Yantian Ports. Only dry containers (20, 40) and high cubes (40) were used as the subject container inventory in this study due to their large demand and valid data computation. The simulation period was from 2011 to 2017 and weekly data were used, applying the actual data frequency among shipping companies. The results of the model accuracy test obtained through an application of Mean Absolute Percentage Error (MAPE) verified that the forecast model for dry 40' demand, dry 40' high cube demand, dry 20' supply, dry 40' supply, and dry 40' high cube supply in Shanghai Port provided an accurate prediction, with $0%{\leq}MAPE{\leq}10%$. The forecast model for supply and demand in Shanghai Port was otherwise verified to have relatively high prediction power, with $10%{\leq}MAPE{\leq}20%$. The forecast model for dry 40' high cube demand and dry 20' supply in Yantian Port was accurate, with $0%{\leq}MAPE{\leq}10%$. The forecast model for supply and demand in Yantian Port was generally verified to have relatively high prediction power, with $10%{\leq}MAPE{\leq}20%$. The forecast model in this study also had relatively high accuracy when compared with the actueal data managed in shipping companies.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.15 no.4
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• pp.2265-2275
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• 2014

The purpose of this study was to investigate the factors related to the stress of orthodontic patients and their quality of life. The subjects in this study were 181 patients who respectively received orthodontic treatment at three different dental clinics located in the metropolitan city of S and K province. The collected data were analyzed by using a structural inventory designed to investigate the general characteristics, stress, the weekly amount of drowsiness and the quality of sleep, and the statistical package SPSS WIN 18.0 was employed. As a result, they got a mean of $40.51{\pm}20.43$ in the level of self-perceived stress, $11.06{\pm}5.42$ in the weekly amount of drowsiness and $13.24{\pm}9.72$ in the quality of life. And it's ascertained that there was a statistically significant correlation among all the stress of the orthodontic patients, their weekly amount of drowsiness and the quality of life.

• Asian Pacific Journal of Cancer Prevention
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• v.16 no.16
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• pp.7331-7335
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• 2015

Background: Concurrent chemoradiation with three weekly high dose cisplatin is the non-surgical standard of care for the treatment of locally advanced head and neck cancers. Although this treatment regime is efficacious, it has high acute toxicity, which leads not only to increased treatment cost, but also to increased overall treatment time. Hence, the current study was undertaken to evaluate the acute toxicity and tumor response in head and neck cancer patients treated with concurrent chemoradiation using $40mg/m^2$ weekly cisplatin, which has been our institutional practice. Materials and Methods: This single institution retrospective study included data for 287 head and neck cancer patients treated with concurrent chemoradiation from 2012 to 2014. Results: The mean age of the patients was 48.8 years. The most common site of involvement was oral cavity. Most of the study patients presented with advanced stage disease. The mean overall treatment time was 56.9 days. Some 67.2% had overall complete response to treatment as documented till 90 days from the start of treatment. According to the Radiation Therapy Oncology Group (RTOG) acute radiation morbidity scoring criteria, mucositis was seen in 95.1% of the patients. Dermatitis and emesis were observed in 81.9% and 98.6%, respectively. Regarding haematological toxicity, 48.8% and 29.6% suffered from anaemia and leukopenia, respectively, during treatment. Acute kidney injury was assessed using the Common Terminology Criteria for Adverse Events (CTCAE), and was found in 18.8% of the patients. Conclusions: Concurrent chemoradiotherapy with weekly cisplatin is an effective treatment regime for head and neck cancers with reasonable toxicity which can be used in developing countries, where cost of treatment is so important.

• Journal of Nutrition and Health
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• v.53 no.4
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• pp.356-368
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• 2020

Purpose: Histidine-containing dipeptides, which are rich in chicken, have been reported to reduce the risk of metabolic abnormalities via anticarbonylation mechanism in animal models. To determine the effect of dietary histidine-containing dipeptides on metabolic risk factors in humans, the relation between chicken consumption and insulin resistance were determined in a population consuming high carbohydrate and low protein. Methods: A total of 7,183 subjects (2,929 men and 4,254 women) aged ≥ 50 years from the Korea National Health and Nutrition Examination Survey (KNHANES) were divided into three groups according to chicken consumption (rarely, monthly, and weekly), and evaluated for the metabolic risk factors using homeostasis model assessment for insulin resistance (HOMA-IR) and quantitative insulin sensitivity check index (QUICKI) in this cross-sectional study. The fourth and fifth (IV-1-3 & V-1) KNHANES, which had blood insulin data, were chosen for the current study. Results: The chicken consumption was significantly associated with insulin (p for trend = 0.018) and HOMA-IR (p for trend = 0.023) in men. In particular, the 'weekly' chicken consuming men in the lowest tertile (< 65.0%) of carbohydrate intake group had significantly lower HOMA-IR (p for trend = 0.033) and higher QUICKI (p for trend = 0.043) than the 'rarely' intake group. In addition, the odds ratio for abnormal HOMA-IR was 0.55 (95% confidence interval [CI], 0.31-0.99) and QUICKI was 0.47 (95% CI, 0.26-0.86) for the 'weekly' chicken consuming group. Conclusion: The 'weekly' chicken consumption had a beneficial effect on insulin resistance and it may partially be due to the major bioactive components in chicken, histidine-containing dipeptides.

• The Journal of the Korea Contents Association
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• v.16 no.7
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• pp.750-759
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• 2016

This study is to demonstrate the effects of working hour on the workers' subjective well-being. Working hour, in this study, means working time per a day and the generosity of weekly holiday. Firstly, the effects of working hour on the worker's well-being will be analyzed. Secondly, it will be investigated if the effects of working hour on the worker's well-being change according to the existence of the family member who needs care. The results of the analysis show that longer working hour and the lower generosity of weekly holiday decrease workers' well being. If workers have family member who needs care, the effects of working hour and the generosity of weekly holiday on the worker's well-being are not significant. It contrasts to the result that women are more satisfactory to their lives than men in cases they don't have family member who needs care. It is supposed that these results are closely related with the enormous gender gap of care time in Korea.