• Korean Journal of Plant Resources
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• v.28 no.2
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• pp.235-242
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• 2015

Morphology and characteristics of floral organ in highbush blueberry cultivars were studied to select suitable cultivars of highbush blueberry for domestic cultivation. The stamen consists an anther and a tape-like hairy filament with well-developed trichomes. When the anther was opened, the wall of anther was not dehiscent, and pollen grains were discharged into two tubes. Pollen was mature tetrad type without being separated after meiosis (Late March). The number of pollen granules per anther was 400~1,300, the germination rate was higher in the cultivars having many pollen grains. Pistil was composed of five carpels and a shipper without separate part. The number of ovules per ovary was 39~67, therefore, the coefficient of ranged from 11.6 to 31.0%. The seed pod formation by combination of ‘Bluejay’ and ‘Sharpblue’ was higher in the cross-pollination than in the self-pollination.

• Journal of the Korean Society of Radiology
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• v.84 no.4
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• pp.911-922
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• 2023

Purpose To compare small bowel distension and side effects between a diluted polyethylene glycol (PEG) solution and a low-density (0.1% w/v) barium sulfate suspension (LDBSS) for CT enterography (CTE) preparation. Materials and Methods Total 173 consecutive patients who underwent CTE were enrolled in this study. The LDBSS (1 L) was used in 50 patients, and the diluted iso-osmotic PEG solution (1 L) was used in 123 patients. Two blinded radiologists independently scored jejunal and ileal distensions on a 5-point scale. To compare side effects between the two groups, the patients reported whether they had immediate complications after the administration of the oral contrast media. Results For ileal and jejunal distension, the diluted PEG solution showed no difference from the LDBSS for either reader (ileum: reader 1, median, 4; 4, interquartile range, 3-4; 3-4, p = 0.997; reader 2, median, 4; 4, interquartile range, 3.3-4.0; 3-4, p = 0.064; jejunum: reader 1, median, 2; 2, interquartile range, 2-3; 2-3, p = 0.560; reader 2, median, 3; 2, interquartile range, 2-3; 2-3, p = 0.192). None of the patients complained of immediate complications following administration of either of the oral contrast media. Conclusion The diluted PEG solution showed comparable bowel distension compared to LDBSS and no immediate side effects; thus, it can be a useful alternative.

• Culinary science and hospitality research
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• v.15 no.3
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• pp.271-283
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• 2009

The purpose of this study is to make analyses on the importance and performance of the foodservice management, foodservice service, and the courses related to coffee in the colleges providing a coffee related curriculum, in order to determine which courses are required in the education programs for employees needed by the coffee restaurants as the employers' viewpoint. The analysis methods were frequency analysis, T-test and IPA analysis. The result are as followings. First, the performance was lower than the importance when it comes to importance and performance with the coffee related courses recognized by the staff in the coffee restaurants, particularly with a big gap in the theory of cost control and coffee theory. Second, in the IPA analysis of the importance and performance of the curriculum, quadrant - I as a weak item includes the cost control, foodservice marketing, and coffee theory courses. Quadrant - II includes the foodservice, coffee extraction practice, Espresso, Caffe Latte and Cappuccio, and Latte Art courses. Pertaining to the quadrant - III are those courses lack of the necessity, including the foodservice management, foodservice franchise, practical English in service, and coffee roasting. Quadrant - IV contains those course of less importance but of higher performance such as the practicum work experience. As part of limitations of study, specialties of staffs working for coffee franchise shops were not reflected due to lacking in pre-conducted studies and the samples couldn't be recognized to represent all coffee franchise shops since the sampling districts were restricted only to Seoul metropolitan area.

• 한국체육학회지인문사회과학편
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• v.54 no.4
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• pp.363-372
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• 2015

The purpose of this study was to suggest marketing plan to improve and promote screen baseball utilization, applying Importance-Performance Analysis (IPA) incorporating marketing mix 4Cs; Customer value, Convenience, Cost, and Communication. A convenience sample was made up of 267 users in screen baseball clubs located in metropolitan area. Evidence on validity and reliability of the data was obtained through exploratory factor analysis and internal consistency analysis. Frequency analysis and paired sample t-test for the difference verification of IPA were conducted also in SPSS version 21.0 with .05 of significance level. The main results of the study were as follows. First, there were partially significant differences between importance and satisfaction regarding the sub-categories of Customer value and Convenience. Second, there were all significant differences between importance and satisfaction regarding the sub-categories of Cost and Communication. Third, as the results regarding IPA, quadrant I indicating 'Keep up Good Work' included healthy use of leisure time, improvement of self-achievement, accessibility, communication between service user and provider, etc. Fourth, quadrant II indicating 'Concentrate Here' included diversification of screen baseball program, cost regarding facility use, etc. Fifth, quadrant III indicating 'Low Priority' included interpersonal relationship, subsidiary facilities, cost of food and beverage, etc. Lastly, quadrant IV indicating 'Possible Overkill' included improvement of physical health and life satisfaction and rules and procedures of screen baseball.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2007.11a
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• pp.341-356
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• 2007

We study factors that affect consumers' switching behaviors among service providers in Korean mobile telecommunications service market. For empirical analysis, quarterly time series data from the first quarter of 2004 through the second quarter of 2007 were used. We chose the number of switchers to each mobile service provider in each quarter as dependent variables. Independent variables include acquisition costs per subscriber, which play the role of subsidy to mobile handset, switching costs, time trend, structural change effect, and standby demand effects. Through the empirical analysis, we found that different providers' churn-in customers are affected by different factors. Specifically, the number of chum-in customers into SK Telecom is explained mainly by SK Telecom's customer acquisition costs and standby demand from KTF, while the number of customers switching into KTF is better explained by switching costs from the previous service provider and standby demand from SK Telecom. Those who chose LG Telecom as their new provider, on the other hand, were mainly attracted by LG Telecom's high subscriber acquisition cost.

• Journal of Convergence for Information Technology
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• v.10 no.12
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• pp.146-155
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• 2020

This study was to evaluate the usefulness of gamma glutamyl transferase (GGT) as a surrogate marker predicting metabolic syndrome. 7,155 non obese men over the age of 20 were studied as subjects. The criteria for diagnosing MetS were the National Cholesterol Education Program - Third Adult Treatment Panel (NCEP-ATP III). The risk of developing MetS according to GGT was conducted logistic regression analysis, and the ROC (receiver operating characteristic) curve was obtained to confirm GGT ability to predict the risk of MetS. Regardless of age and body mass index, MetS had a 7.09 times higher risk of onset in the fourth quartile than in the first quartile of GGT (p<0.001). The AUC (area under the curve) of GGT for the diagnosis of MetS was 0.715, and the cutoff value of GGT was 40.0 U/L, the sensitivity was 65.0%, and the specificity was 70.2%. Therefore, GGT is considered to be a useful diagnostic index for diagnosing MetS.

• The Journal of Korean Academy of Sensory Integration
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• v.19 no.3
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• pp.13-21
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• 2021

Objective : The purpose of this study was to investigate the sensory processing factors that contribute to the temperament and character traits in early childhood. Methods : In this cross-sectional study, caregivers of typically developing children aged 3-6 years responded to the Sensory Profile and the Junior Temperament and Character Inventory. Multiple regression analysis was performed with temperament and character traits as criterion variables and sensory processing quadrants as predictive variables. Results : Sensory sensitivity significantly predicted novelty seeking and cooperativeness. The high frequency of sensory sensitivity behavior was related to high novelty seeking and low cooperativeness. Conclusion : This study demonstrated that sensory sensitivity contributes to the novelty seeking temperament and cooperativeness character in early childhood.

• The Journal of the Korea Contents Association
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• v.12 no.4
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• pp.438-447
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• 2012

The objectives of this research are: to provide fundamental data for tourism policy and investigate medical tourism attributes by IPA(Importance-Performance Analysis) to attract Japanese medical tourists to Korea. Utilizing Japanese medical tourists as subjects of inquiry, this study evaluated the importance of medical tourism selection attributes and the rate at which these attributes were performed. Consequently, this study deduced 'convenience, service quality, differentiation, approximation' factors by factor analysis as well as the ranking among each selection attributes using T-test. The importance-performance analysis showed 'Concentrate Here' in quadrant I, 'Keep up the Good Work' in quadrant II, 'Low Priority' in quadrant III and 'Possible Overkill' in quadrant IV. The results show that "Concentrate Here" part in quadrant I is reservation procedure rapidity and information system simplicity. This means that these attributes are very important but they indicate low performance. Thus, concentration among tourism managers should be focused along these attributes. The study, then, suggests that employee who speaks Japanese fluently should be arranged during reservation procedure. Furthermore, Japanese class should become mandatory during basic employee training to improve reservation procedure rapidity. Moreover, clinic websites should concentrate on accessibility of Japanese users in such a way that they can consult their needs on line. Finally, managers should find diverse ways to bring about good service rapidly and conveniently.

• The Journal of the Korea Contents Association
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• v.9 no.11
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• pp.407-415
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• 2009

In this research, to identify the degree of preference and participation in leisure sports, over 19-year-old adults living in the capital region were collected as subjects, and among them, 250 persons were chosen by purposive sampling method. Using SPSSWIN 16.0, I analyzed the collected data by reliability analysis, paired sample t-test, PPA(preference performance analysis) method. The conclusion is the following. First, the first quadrant showed wind surfing, skins-cuba, water-ski, and yacht, and as a result of this, it is necessary to improve the degree of participation in this field, the second quadrant showed golf, racketball snow board, ski, fishing, and climbing, and these field need to specific attention to maintain continuous attention, for they have a great deal of attendance, the third quadrant, showed water sleigh, cart, balloon, sky-diving, orienteering, hang gliding, model plane, and survival game. As the degree of preference and participation in these sports is low, it is recommended that more effort should be made for these sports. Finally, in the forth quadrant, there are tracking, mountain bike, inline skates, rafting, and cycling. As it's the participation is high, while that of preference is low, it is important to maintain the policy of the participation in leisure sports. Sencondly, the degree of preference and participation in leisure sport activicties acording to socio demographic characteristics differentiate.

• Proceedings of the Korea Contents Association Conference
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• 2009.05a
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• pp.420-424
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• 2009

In this research, to identify the degree of preference and participation in leisure sports, over 19-year-old adults living in the capital region were collected as subjects, and among them, 250 persons were chosen by sampling. Using SPSSWIN 16.0, I analyzed the collected data by Reliability Analysis, Paired Sample T-Test, and IP A method. The conclusion is the following. First, the first quadrant showed skins-cuba, water-ski, wind surfing, and clay-pigeon shooting, and as a result of this, it is necessary to improve the degree of participation in this field. Secondly, the second quadrant showed golf, snow board, ski, fishing, and climbing, and these field need to specific attention to maintain continuous attention, for they have a great deal of attendance. Thirdly, in the third quadrant, there are water sleigh, cart, balloon, sky-diving, orienteering, hang gliding, model plane, and survival game. As the degree of preference and participation in these sports is low, it is recommended that more effort should be made for these sports. Finally, in the forth quadrant, there are tracking, mountain bike, inline skates, rafting, and cycling. As it's the participation is high, while that of preference is low, it is important to maintain the policy of the participation in leisure sports. In conclusion, for the sports which is preferred that is difficult to join right now, most of all, it is necessary that we should pay attention to and invest the social infrastructure in which main items cannot be joined now.