• The Journal of Bigdata
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• v.2 no.2
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• pp.95-104
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• 2017

In 2014, Seoul Metropolitan Government launched a response service aimed at responding promptly to civil complaints. The complaints received are categorized based on their content and sent to the department in charge. If this part can be automated, the time and labor costs will be reduced. In this study, we collected 17,700 cases of complaints for 7 years from June 1, 2010 to May 31, 2017. We compared the XGBoost with RandomForest and confirmed the suitability of Korean text classification. As a result, the accuracy of XGBoost compared to RandomForest is generally high. The accuracy of RandomForest was unstable after upsampling and downsampling using the same sample, while XGBoost showed stable overall accuracy.

• Journal of the Korean housing association
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• v.26 no.6
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• pp.1-8
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• 2015

This study aims to develop a solution to inter-floor noise complaints by exploring cases of noise complaints between floors and by identifying the demands and needs of the residents. For this purpose, a survey was conducted targeting residents who were sorted into groups depending on their experiences with inter-floor noise. This survey was carried out from June 11, 2014 to June 16, 2014. A total of 100 copies of the questionnaire was distributed to the residents, of which 98 were completed and collected. Data were statistically processed in accordance with SPSS WIN 18.0. The results showed that the leading causes of inter-floor noise complaints were residents' differences in schedules and their inconsideration in behavior. Thus, the solution to this issue is three-fold: first, to take social measures in order to improve communication and understanding between residents so they can be mindful of their noise levels; second, to reinforce noise control regulation; and third, to improve noise reduction design within the building architecture.

• Journal of Technologic Dentistry
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• v.31 no.3
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• pp.59-66
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• 2009

In this study 240 geriatric patients, aged 60 year and over were evaluated using a questionnaire and oral examination for their oral status, demand and satisfaction of prosthesis treatment. 1. The single main complaint was regarding from the existing removable prosthesis. When the complaints were catagorized into larger groups, complaints regarding existing prosthesis were 32% and followed by 30% in caries and endodontic problems. 2. DMFT index woman appeared the man the age when will increase more highly recording where highly and considered statistically. 3. According to the result from questionnaire, 48% of patients wearing removable prosthesis and 43% with fixed prosthesis were not satisfied with existing prosthesis. Thirty-seven percentages of patients were not satisfied with aesthetics and unable to chew food properly. 4. Thirty-nine percentage of patients were wearing removable prosthesis. More complete dentures were found on maxilla and partial dentures on mandible. 5. Seventy-seven percentage of patients requested for new prosthesis and the majority of these patients had complaints of difficulties in chewing and discomfort.

• The Journal of Korean Academy of Prosthodontics
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• v.39 no.4
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• pp.323-335
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• 2001

In this study 240 geriatric patients, aged 60 year and over were evaluated using a questionnaire and oral examination for their oral status, demand and satisfaction of prosthodontic treatment. The followings are the findings : 1. The single main complaint was regarding from the existing removable prosthesis, When the complaints were categorized into larger groups, complaints regarding existing prosthesis were 32% and followed by 30% in caries and endodontic problems. 2. Approximately half of the geriatric patients had 21 or more remaining dentition. This number however diminished with increase in age of the surveyed patient. 3. According to the result from questionnaire, 48% of patients wearing removable prosthesis and 43% with fixed prosthesis were not satisfied with existing prosthesis. Thirty-seven percentages of patients were not satisfied with aesthetics and unable to chew food properly. 4. Seventy-seven percentages of patients requested for new prosthesis and the majority of these patients had complaints of difficulties in chewing and discomfort. 5. Thirty-nine percentages of patients were wearing removable prosthesis. More complete dentures were found on maxilla and partial dentures on mandible.

• Fashion & Textile Research Journal
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• v.16 no.3
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• pp.378-385
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• 2014

This study examined the differences in job related variables, job satisfaction and job performance against demographic characteristics and the impacts of job related variables on job satisfaction and job performance. A questionnaire survey collected data from september $1^{st}$ and $7^{th}$ 2011. A convenience sample was drawn from salespersons working for department stores in Daegu and Pohang. A total of 337 responses were complete and usable questionnaires. Data were tested through factor analysis, t-test, ANOVA, and regression analysis, using SPSS 21.0. The results of this study are as follows: First, six factors were extracted from job related variables (positive reaction of customer, career of salespeople, interpersonal relations, influence of salesperson, customer complaints, overwork). Second, there were significant differences in job related variables, job satisfaction, and job performance according to age, marital status, average monthly income, work period, and job position. Third, regression analysis between job related variables and job satisfaction showed that the most influential predictor of job satisfaction was career of salespeople, followed by interpersonal relations, influence of salesperson, customer complaints, and overwork. The most influential predictor between job related variables and job performance was positive reaction of customer, followed by career of salespeople, interpersonal relations, influence of salesperson, and customer complaints.

• Journal of Korean Academy of Oral and Maxillofacial Radiology
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• v.10 no.1
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• pp.47-55
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• 1980

The author analysed the routine radiographic changes and clinical symptoms of 205 cases of temporomandibular joint arthrosis. The clinical symptoms of the patients were classified and the morphological ylar head, articular eminence, and articular fossa were analized and discussed view point. The positional changes of condylar head and articular fossa relatation in TMJ arthrosis were observed. The frequencies of coincidence between the site of complaints and the site of the abnormal images which could be detected were examined. The results were obtained as follows; 1. Bone erosion, deformity, marginal proliferation and sclerosis were selected from many abnormal images as the radiographic diagnostic criteria of TMJ arthrotic lesions. 2. Abnormal radiographic findings were revealed in 150 cases (73.9%) of 205 total TMJ arthrosis cases and site with abnormal findings coincided with the site of complaints in 106 cases (70.7%) of 150 cases and coincidence rates were higher above fourth decades than below third decades. 3. Sclerosis of the abnormal radiographic findings could be found more often below third decades than above fourth decades. 4. The positional changes of condylar head were revealed in 176 cases (85.9%) of 205 total cases. 5. Pain complaints were revealed in 170 cases(82.9%) and clicking sounds were revealed in 120 cases (58.6%) of clinical symptoms of TMJ arthrosis. 6. No tendency was found so far the differential diagnosis between pain dysfunction syndrom and osteoarthrosis of TMJ.

• Proceedings of the Korean Geotechical Society Conference
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• 2009.03a
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• pp.30-37
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• 2009

In doing the foundation work in the downtown, the popular complaints by means of Noise and vibration have been became heavy burden. Therefore, the noise & vibration-free screw PHC pile method will contribute to the foundation work by removal of the popular complaints and improvement of the constructability. In this paper, the load bearing capacity and displacement characteristics of the noise & vibration-free screw PHC pile were analyzed. The noise & vibration-free screw PHC pile's behavior was better well than the existing PHC pile's one.

• The Journal of the Korea institute of electronic communication sciences
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• v.8 no.11
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• pp.1755-1762
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• 2013

This study military Act (enacted in 1972) due to the complaint were filed. The first study to address complaints such as integrated systems provide improvement is needed. Second contribution to the community or with the composition of the atmosphere that should provide an instrument to win. Finally, the laws and institutions, regulations, and doctrine in many aspects including the lack of forward thinking, or shall be deemed to be lacking complementary aspects. Studies in the Department of Defense as a reference to the relevant departments so that work is to provide.

• Human Ecology Research
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• v.53 no.4
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• pp.351-362
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• 2015

This study examined differences in counseling work and work performance in a firm by the individual characteristics of counselors. This study also investigated the effects of consumer counselor's reaction and stress from counseling work on counselor satisfaction in regards to counseling work and work performance. The results of this study are as follows. First, consumer counselor's work satisfaction was high for female counselors, university-educated, with middle or high status occupations, had short work years, had a higher tendency towards consumerism, worked in a counseling department with an active reaction policy towards consumer complaints, and had a lower level. Second, the work performance of a counselor was high for those who were older, university-educated, had short work years, worked in large-size counseling departments in a firm, had a higher tendency of consumerism, and worked in counseling departments with active reaction policies toward consumer and consumer's complaints. Third, consumer counselor's work stress effected work satisfaction but did not influence work performance. The counselor's reaction towards consumer's complaints influenced the work performance but did not influence the work satisfaction of a counselor.

• Journal of Korean Society for Quality Management
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• v.47 no.3
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• pp.641-659
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• 2019

Purpose: Recently, the managing customer complaints properly has emerged as key source of competitive advantage in the large distribution industry. Effective customer complaint management helps firms minimize service failures and incense the capability to respond to customer's needs. Despite this importance, the in-depth prior study of a firm's service failures is very limited. Therefore, the actual service failure cases of large discount stores in Korea were analyzed in this study, and the types of service failures that occur at the service interface were identified. Method: Specifically, a total of 48,307 cases of customer complaints that have occurred in the past three years were collected from 1 January 2016 to 31 December 2018. Using 7 dimensions of service marketing mix. we have classified and analyzed systematically the service failure cases collected. Results: Among the cases of service failures, 34,921 (72.3%) cases were involved with the product factor, followed by 6,152 (12.7%) cases with person factor and 5,392 (11.2%) cases with process factor. Conclusion: By linking the main causes of service failure with the service marketing mix variables, this research presented a more systematic analytic model and verified by applying it to large domestic distribution company. Understanding the main factors affecting customer complaints n the large distribution industry can provide managers useful information and insight who want to achieve an effective customer complaint management.