• Title/Summary/Keyword: Certifications

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Wine Quality Prediction by Using Backward Elimination Based on XGBoosting Algorithm

  • Umer Zukaib;Mir Hassan;Tariq Khan;Shoaib Ali
    • International Journal of Computer Science & Network Security
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    • v.24 no.2
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    • pp.31-42
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    • 2024
  • Different industries mostly rely on quality certification for promoting their products or brands. Although getting quality certification, specifically by human experts is a tough job to do. But the field of machine learning play a vital role in every aspect of life, if we talk about quality certification, machine learning is having a lot of applications concerning, assigning and assessing quality certifications to different products on a macro level. Like other brands, wine is also having different brands. In order to ensure the quality of wine, machine learning plays an important role. In this research, we use two datasets that are publicly available on the "UC Irvine machine learning repository", for predicting the wine quality. Datasets that we have opted for our experimental research study were comprised of white wine and red wine datasets, there are 1599 records for red wine and 4898 records for white wine datasets. The research study was twofold. First, we have used a technique called backward elimination in order to find out the dependency of the dependent variable on the independent variable and predict the dependent variable, the technique is useful for predicting which independent variable has maximum probability for improving the wine quality. Second, we used a robust machine learning algorithm known as "XGBoost" for efficient prediction of wine quality. We evaluate our model on the basis of error measures, root mean square error, mean absolute error, R2 error and mean square error. We have compared the results generated by "XGBoost" with the other state-of-the-art machine learning techniques, experimental results have showed, "XGBoost" outperform as compared to other state of the art machine learning techniques.

Intelligent Tutoring System based on Wired and Wireless Internet for the living English 300-certifications Program (생활영어 300 인증제를 대비한 유무선 기반 지능형 교육 시스템)

  • Lee, Young-Seok;Cho, Jung-Won;Kim, Byung-Gyu;Park, Jung-Hwan;Kim, Su-Min;Choi, Byung-Uk
    • Journal of The Korean Association of Information Education
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    • v.9 no.3
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    • pp.533-548
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    • 2005
  • According to the increasing of the internet infrastructure and growth of contents technology, the users can access an education service at anytime and anywhere. In a field of English education, especially, internet technology has enabled learners to communicate with their teachers and multimedia contents technology has been able to provide learner not only lots of interests, but also good effect on English learning. In this paper, we propose a method diagnosing learner's level by using some question-items, which consist of item's type and item's function. Futhermore, the proposed system can support three devices which are PC, PDA, and Mobile Phone on wired and wireless internet communication environments. Also, the system provides multimedia contents including flash movies, image, and audio contents. We have applied the system into real classroom, and we verified that the question-items that system provides has no problem, and our method could improve each learner skill on English education. Therefore, we expect that learner who uses the proposed system will get level-based English learning service at anytime and anywhere.

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A Study on Effective Relations between China's Cancellation of the Export Rebate of VAT tax and Chinese Steel Export to Korea. (중국의 수출 증치세 환급 취소가 중국산 철강재의 대한국 수출에 미치는 영향)

  • Lee, Seoung Taek
    • International Commerce and Information Review
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    • v.19 no.3
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    • pp.83-105
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    • 2017
  • I tried to analyze export relation of influence in Chinese H beam(common steel), Hot Rolled Steel(common steel), Plate(common steel) which could be influenced immediately by China's cancellation of the export rebate of value added tax in 2010 through the statistic methods such as cointegration, Granger causality, impulse response and variance decomposition. In the first period they mutually influenced each other in export to Korea but in the second period, this relation of influence was lessoned. Due to production expansion of Hot Rolled Steel(common steel), Plate(common steel) in Korea, the change of import trend, the market change of steel users' industries and China's expedient export of boron steel to Korea, mutual influence among these products was greatly declined. Ever since Hyundai Steel's production expansion involving blast furnace facilities, there is need for the industry to concentrate on developing new markets for its facilities' output in Korea. Therefore, Korea's steel industry desperately needs strength of de-jure standards such as unique quality standards and related certifications, efficient distribution management, as well as export promotion strategy through its global trading network to effectively address its structural supply-demand imbalances.

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Analysis and Improvement of HACCP Program for Small-and Medium-sized Dairy Plants of Korea (국내 중소규모 목장형 유가공장의 HACCP 적용 시 문제점 분석 및 개선방안 제안)

  • Kang, Il-Byeong;Song, Kwang-Young;Kim, Dong-Hyeon;Kim, Hong-Seok;Yim, Jin-Hyeok;Kim, Young-Ji;Lee, Joo-Yeon;Chon, Jung-Whan;Kim, Hyunsook;Om, Aeson;Koo, Rakhyun;Kim, Sae-Hun;Seo, Kun-Ho
    • Journal of Food Hygiene and Safety
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    • v.32 no.1
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    • pp.14-19
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    • 2017
  • The purpose of the study was to simplify standard HACCP manual for improving the on-site applicability and increasing the implementation rate of HACCP program for small- and medium-sized dairy farms (SMDF). A survey was carried out in 32 SMDFs using a structured questionnaire. The results indicated that the number of workers had a positive correlation with HACCP certifications (p < 0.05). Most of HACCP non-certified farms (66.7%) were run by two workers with 40-60 cows and milking yields of 1,000-1,500 L per day. Major drawbacks for dairy farmers to implement current HACCP system were the difficulties in daily recording and facility management (40%). On the basis of the survey results, it was suggested that the development of on-site standard HACCP manual and user-friendly record chart with O/X checklist were the most urgent factors to increase HACCP implementation rate. In addition, the alternative third party service for microbial and chemical tests could also be accompanied for small-sized dairy farms.

A Study on Correlation Analysis between TCB Evaluation Indicator and Technology Rating (기술신용평가기관(TCB) 효율성 제고 및 기업기술력 강화를 위한 평가지표간 상관관계 분석연구)

  • Son, Seokhyun;Kim, Jaeyoung;Kim, Jaechun
    • Journal of Technology Innovation
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    • v.25 no.4
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    • pp.1-15
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    • 2017
  • In 2014, the Financial Services Commission designated the Tech Credit Bureaus(TCB) to issue technical credit evaluation reports. The Five credit rating agencies, KEB Hana Bank and others have issued the technical credit reports since the summer in 2014. Meanwhile, the technology evaluation model of KEB Hana Bank consists of 25 detailed evaluation items. These item classes are weighted and the technology rating is systematically. The technology rating is combined with the credit rating to calculate the technology-credit rating. In this paper, we analyzed the 406 evaluation results issued by KEB Hana Bank. Based on the number of years of work experience, company managerial years, technical personnel score, the possession of R&D department, the amount of R&D investment, the number of certifications, and the number of patents, the Correlation between the above items and the technical grade was analyzed. It was found that quantitative indicators such as the presence of R&D department, patent numbers, and R&D investment expenses had a significant effect on the company's technology grade, and in particular, the presence of R&D department was shown a high correlation with the technology rating.

Entrepreneurial intentions for University students Based on Theory of Planned Behaviors (대학생들의 경력개발과 관련된 계획된 행동들이 창업실행에 미치는 영향)

  • Han, Junghee;Cho, Geon
    • Asia-Pacific Journal of Business Venturing and Entrepreneurship
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    • v.10 no.1
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    • pp.111-118
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    • 2015
  • Students have chosen the various behaviors to prepare for the future during the university life. In general to be employed by someone and to create one's own business is likely to be regarded as difference ways. The objectives of this study is to find that whether student's planned behaviors such as albeit, internship, getting some certification are to be related with entrepreneurial intention, and entrepreneurial intention has positive relation with entrepreneurial decision makings based on theory of Planned behaviors through empirical study. In order for that, this study sets four research hypothesis. In the empirical findings, 3 research hypothesis except H2 (subjective norms have positive relations with entrepreneurial intention) are accepted in statistically. Considering research findings, students' planned behaviors, such as albeit, internship, getting some certifications to have been regards as far away from entrepreneurship have positive relation with entrepreneurial intention and implementation. Entrepreneurship education and knowledge regarding start-ups given by Universities or private institutions should provide information to create imagination new venture business with spontaneity instead of giving intented contents concerning entrepreneurship when taking into consideration of result of hypothesis 2. In order words, entrepreneurship education to provide the self-efficacy is the right track for students.

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Korean consumers' attitudes towards organic labels and country-of-origin of organic foods

  • Lee, Hye-Kyoung;Cho, Young-Sang
    • Journal of Distribution Science
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    • v.9 no.1
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    • pp.49-59
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    • 2011
  • Although the South Korean organic food market is in the infancy compared to other industrialized countries, Korean consumers'interest in organic food and retail stores devoting space to organic products have been rapidly increasing. Despite the fact of organic food popularity, the term "organic" is interpreted differently by individuals. As opposed to the US, Japan and the EU where have operated an integrated organic food labelling system, Korea has adopted complex organic labelling systems regulated by several different government bodies. As a result, complicated food labelling standards make consumers confused when purchasing organic foods. Furthermore, in terms of country of origin (COO), it is argued by a lot of researchers that COO effects vary from product to product and from country to country; moreover, other informational cues such as brand and price can influence COO effects. In modern society, COO labelling has been complicated, due to the sourcing, manufacturing and market locations of merchandise spread over the world. Accordingly, the evaluation of COO effects has become complex. In order to examine these issues, a quantitative research was selected to classify the commonfeatures of organic food consumers and construct statistics such as the extent to which people are aware of organic food and COO labellingvia a questionnaire which took place in two cities in Korea with a cluster sample of 161 organic food purchasers. As for the data analysis, one-way analysis of variance (ANOVA), T-tests, bivariate crosstatulations with Cramer's V were conducted,depending on the characteristics of variables and the assumptions the research data need to fit. It has been concluded that in general, Korean organic consumers comprehend the term "organic"in a closer way to the general concept rather than technical term, thus people do not appreciate environmentally labels which include organic food labels, although marital status influence the degree of label awareness, regardless of gender, age, education level and so on. Regarding COO effects on organic food, home organic products were Korean consumers'first choice over those from industrialized countries and developing nations. Specifically, in processed organic product category, domestically cultivated and processed organic products were absolutely preferred to leading national brands produced with imported ingredients and international brands. However, due to a lack of checks of ingredients' COO, consumers tend to purchase a leading national organic food brand, believing that it is a pure organic food sourced domestically. As a consequence, this research has suggested some important managerial implications and future research directions. In order to prevent consumer confusion when buying organic foods, it should be noted that consumers do not comprehend the organic food certifications, due to complicated labelling systems for organic produce and processed organic foods. Therefore, government bodies related to organic food distribution have to know consumers' perception of organic food labels and the significance of customer-oriented labels and reestablish labelling standards. Similarly, public advertising should be followed to raise public awareness of the labelling to enable customers to have the correct information. In addition, not only international marketers but also domestic marketers need to understand COO images and also the influence COO of ingredients has on the image of an organic product.

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Effect of Certificates of Major on Employment : Case of Steel Industry (전공자격증이 취업에 미치는 영향 : 제철산업학과 사례)

  • Yoo, Mi Na
    • Journal of Practical Engineering Education
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    • v.12 no.1
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    • pp.203-212
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    • 2020
  • This study surveyed 244 employees out of a total of 356 graduates from the steel industry in 2015 to February 2019. The employment rate of graduates is POSCO 67.7%, Hyundai Steel 23.8%, POSCO families 13.1%, and Hyundai Steel families 8.5%. The national certificates acquired by each section were surveyed, with 53.1% of metal section, 39.8% of mechanical section, and 7.1% of other section. Preferred national certificates were POSCO, machinery maintenance industry technicians, steelmaking technicians, and Hyundai Steel followed steelmaking technicians, mechanical maintenance industrial technicians. Among other certifications, the national certificate of industrial safety industrial engineer was preferred. In addition, the average number of national certificates per person for major employment is 5.06 for POSCO, 5.35 for POSCO families, 5.29 for Hyundai Steel, and 4.73 for Hyundai Steel families. The average number of national certificates for S-OIL, KEPCO, Poongsan Metal, etc., is 2.51. In conclusion, it was found that the national certificates related to majors are used as the main evaluation data in finding suitable majors and competency for the job when recruiting talents.

Monitoring of Pesticide Residues and Preservatives in Cosmetics Using Natural Materials (천연물질 사용 화장품의 잔류농약과 보존제 모니터링)

  • Park, Eun-Mi;Um, Mi-Na;Kim, Beom-Ho;Cho, Sang-Hun;Park, Sin-Hee;Jo, Hyun-Ye;Yoon, Mi-Hye;Lee, Jong-Bok
    • Journal of Food Hygiene and Safety
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    • v.27 no.3
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    • pp.257-263
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    • 2012
  • Cosmetics using natural materials which was purchased in retail stores, distributed in Gyeonggi province(32 samples) and online through internet(24 samples) were analyzed by pesticide residues and target preservatives for assessing the safety of it. Natural or organic certifications was identified in 22 samples among 56 samples and most of them were Ecocert. Pesticide residues was detected in 3 samples among 56 samples and each compound and concentration was permethrin(0.6 mg/kg), tricyclazole(11.7 mg/kg) and malathion(0.05 mg/kg). All of it was purchased through internet. Target preservatives was detected in 13 samples among 56 samples and one of them was over the maximum allowed concentration and the rest of them were within the maximum allowed concentration of the respective preservatives. The compound which was over the maximum allowed concentration was benzoic acid and compounds which were within the maximum allowed concentration were sorbic acid, benzoic acid and methylparaben. They were all identified substances in products and the number of detected preservatives in retail stores were higher than online samples purchased through internet. As a result of this study, The method of analyzing pesticide residues and limit in cosmetics using natural materials should be set up as soon as possible and the monitoring about preservatives in cosmetics using natural materials should be conducted on continuously.

Analysis and Suggestion of Environment-friendly Interior Finishing Materials for Aged Apartment Remodeling (노후 공동주택 리모델링의 친환경 실내 마감재료 분석 및 제안)

  • Kim, Ki-Hyun;Kim, Kyung-Rai
    • Korean Journal of Construction Engineering and Management
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    • v.8 no.2
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    • pp.118-126
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    • 2007
  • Environmentally Sound and Sustainable Development (ESSD)" is a key word in recent years. The construction industry, have put a great influence on ergonomic and sustainable environment. Recently, "green building certifications", such as Indoor Air Quality (IAQ) and eco-friendly material regulation have been established. With this regard, new construction and aged-housing remodeling projects are required to meet these certification criteria. Apartment residents have great concern on eco-product, since many cases are reported that Sick Building Syndrome is caused by toxic substance from building materials. Aged-housing remodeling construction has a unique characteristic in that the residents are already determined prior to construction execution. Therefore, the analysis of resident's need for building materials in aged-housing remodeling is relatively easy compared to new building construction. As such, it is very important to analyze their preferences for eco-friendly materials prior to project execution. The purpose of this study is to find the needs of residents and priority of their needs. Based on their needs and priority, this paper provides a new strategy in using environment-friendly materials and maximizing their satisfaction level when aged housing remodeling is constructed. In addition, this paper provide new criteria in selecting new developed environmental materials in remodeling projects for the purpose of improving the safety and health level in construction industry.