• Journal of The Korean Association For Science Education
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• v.39 no.1
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• pp.35-44
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• 2019

Currently, most of the science and engineering students who enter the university are required to take general chemistry and general chemistry experimental subjects. However they have different learning bases about learning basic science subjects. Regarding college entrance examinations, the current system is used for selection, so they have different levels of basic knowledge. But, without considering this situation, all of the students in science and engineering are participating in the same basic science class, some learners are relatively easy to adapt to learning, while others experience extreme difficulties and suddenly give up. This is true. The purpose of this study is to develop a scale to measure the ability to learn general chemistry of freshmen in science and engineering at H University in the Seoul Metropolitan area and to analyze what kind of learning backgrounds are related to learners. The results show that gender and major are not related to general chemistry learning major, and it we found that there is a close relationship to the relationship between their major and chemistry, the level of the chemistry learning in the high school, and the selection of chemistry in college entrance examinations. In addition, it was found that the degree of feeling that pre-learning is beneficial to current learning and that it is common with current learning is also a factor related to general chemistry learning aptitude. Therefore, in this study, we propose two ways of presenting and promoting a guide for learning by majors, and establishing a step-by-step learning system considering the level of students.

• Korean Security Journal
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• no.48
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• pp.207-233
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• 2016

The purpose of current study is to investigate university students' attitudes toward prostitutes and factors affecting their attitudes. Based on previous research, age, grade, major, gender, religion, religious faith, watching pornography, prostitution experience, empathy level, anti-prostitution/anti-rape /human right education and gender equality level were constructed as independent variables. Using self-administered survey method, 502 students participated in survey. Research results indicated that average of respondents' attitudes toward prostitutes 4.19 was higher than median value(3). Results of multiple regression revealed that a male student, a social welfare and theology major student, a respondent with lower social-economic status, a respondent with higher level of empathy, and gender equality is more likely to demonstrate more supportive and positive attitude toward prostitute. Based on research results, developing programs aimed at enhancing empathy and gender equality, and implementing character education and prostitution/sexual violence prevention program were provided as policy implications.

• Journal of Auto-vehicle Safety Association
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• v.13 no.2
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• pp.35-41
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• 2021

In this study, improved path tracking control algorithm based on pure pursuit algorithm is newly proposed by using improved lane detection algorithm through real time post-processing with interpolation methodology. Since the original pure pursuit works well only at speeds below 20 km/h, the look-ahead distance is implemented as a sigmoid function to work well at an average speed of 45 km/h to improve tracking performance. In addition, a smoothing filter was added to reduce the steering angle vibration of the original algorithm, and the stability of the steering angle was improved. The post-processing algorithm presented has implemented more robust lane recognition system using real-time pre/post processing method with deep learning and estimated interpolation. Real time processing is more cost-effective than the method using lots of computing resources and building abundant datasets for improving the performance of deep learning networks. Therefore, this paper also presents improved lane detection performance by using the final results with naive computer vision codes and pre/post processing. Firstly, the pre-processing was newly designed for real-time processing and robust recognition performance of augmentation. Secondly, the post-processing was designed to detect lanes by receiving the segmentation results based on the estimated interpolation in consideration of the properties of the continuous lanes. Consequently, experimental results by utilizing driving guidance line information from processing parts show that the improved lane detection algorithm is effective to minimize the lateral offset error in the diverse maneuvering roads.

• Proceedings of the Korea Water Resources Association Conference
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• 2021.06a
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• pp.411-411
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• 2021

최근 들어 이상기후에 따른 집중호우의 영향과 하천 유역 내에서의 토지이용의 증가로 하천의 하류부에서의 홍수피해는 점점 증가하고 있다. 이에 대비하기 위해 하천 시설물 설치를 계획하거나 이수, 치수 계획을 세우기 위해서는 하상이 어떻게 변화할 것인지 파악하는 것이 중요하다. 연구 대상 지역 세종특별자치시 금남면 영대리 유천천은 최근 10년간 홍수로 인한 피해액이 연평균 약 2.4억 원으로 나타났으며 매년 피해가 지속되고 있다. 유천천은 인위적 하도의 변경과 토지이용 상황의 변화 및 하천 골재채취, 댐 및 저수지 건설, 자연적인 홍수 등으로 하상이 변동되고 있으며, 그로 인해 생긴 유로의 변화로 발생할 수 있는 피해 예측이나 하천 시설물 설치를 위해서는 변동 결과의 예측이 필요하다. 따라서 본 연구에서는 대상 유역의 하상변동을 분석하기 위하여 HEC-RAS Sediment Transport Analysis(STA) 모형을 적용하였다. 적용한 데이터를 바탕으로 장래 하상변동 결과를 예측하였고 GIS 기법을 이용하여 유역의 특성 및 유출 특성에 관한 인자들을 도출하였다. 장래 1년, 5년, 10년 단위로 하상변동의 예측이 가능한 HEC-RAS STA 모형 분석 결과, 하상경사가 급한 각 하천상류 구간과 횡단시설물의 상류층에서는 하상저하가 발생하고, 하상경사가 완만한 하류 구간 부근에서는 일부 하상 상승이 발생하는 것으로 나타났다. 수위상승에 대비하여 지속적인 관찰과 상승구간에 대한 주기적인 하천 정비를 통하여 홍수기에 수위상승을 억제할 필요가 있을 것으로 판단된다. 본 연구의 결과는 하도 안정성과 이수와 치수안정성 확보, 하천의 효율적인 이용과 보전, 유지관리 시 기본해석으로 활용할 수 있을 것으로 사료된다.

• The Journal of the Convergence on Culture Technology
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• v.7 no.2
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• pp.309-316
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• 2021

The purpose of this study is to investigate the level of adaptation to college life and identity the influencing factors on adaptation to college life of college freshmen's. Data were collected from 2088 college freshmen's in B city and analyzed by t-test, ANOVA, Pearson correlation coefficient, and multiple regression using SPSS/WIN 22.0. The degree of adaptation to college life in college freshman was 3.75±0.73. There were significant differences in college life adaptation with respect to gender(t=3.947, p<.001), age(F=3.445, p=.032), major(F=5.539, p=.001), family type(F=6.958, p<.001). There was negative correlation between adaptation to college life and perceived stress(r=-.696, p<.001), depression(r=-.507, p<.001), positive correlation were found between perceived stress and depression(r=.567, p<.001). The factors affecting the adaptation to college life of the study subjects were perceived stress, depression, age, major, family type with an explanatory power of 50.4%. In conclusion, to enhance adaptation to college life of college freshmen's, it is necessary to develop and adopt various program of adaptation to college life.

• Convergence Security Journal
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• v.17 no.5
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• pp.187-203
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• 2017

This study focuses on analyzing the problems of the Korean standard classification of occupations(KSCO), which is a formal and institutional implementation method that affects the occupational identity and Occupational Prestige of Private Security, and suggests ways to improve it. The following should be supplemented. (1) It is necessary to unify occupations related to private security that are classified into simple labor workers. (2) Delete the Technical Security Guards(4123) and create a Security Guard(4123) instead. (3) Facility Security Guards(41230), Convoy Security Guards, Technical Security Guards(41232), Security monitoring and control personnel(41233), and Special Security Guards(National important facility security guard)(41234) will be newly established. (4) Change the name of subclassification and subclassification in simple labor worker of Major Class 9(Code 9), and adjust Security Guards(9421) to the Surveillance Personnel(9421).

• Food Science and Industry
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• v.49 no.3
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• pp.2-11
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• 2016

As recently many studies on the relationship between excessive sugar intake and chronic disease have been reported across the world, more attention to sugar intake has been paid. Sugars, called simple sugars, is a kind of carbohydrate and sum of monosaccharides and disaccharides. Sugars that are particularly related to health are added sugars or free sugars, which are added to food by processing or cooking. It is generally not to give satiety and increases energy density without other nutrients. Especially, the major food source of added sugar is sugar-sweetened beverages(SSBs), from which sugars are closely linked with health outcome. The total sugar intake in Korea is 61.4 g per day and it is almost half of those in the western countries such as the U.S. or Australia and it is within the recommendation level by the Dietary Reference Intakes for Koreans. However, when it is classified by age groups or food sources, sugar intake in adolescents and young adults are high and the sugar from processed foods is also high that would lead to high intake levels of added sugar. Particularly, the frequency of SSBs, the major food source of added sugar, is the highest among 20's. While the studies of excessive sugar intake with chronic diseases including obesity, type 2 diabetes, metabolic disease, cardiovascular disease reported in the Western populations, those in the Korean populations have just started. Given our dietary practice is very different from those in the western population, more prospective studies would be necessary to evaluate sugar intake by type or food source exactly and examine its relationship with chronic diseases in the Korean population.

• Journal of Nutrition and Health
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• v.57 no.2
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• pp.261-274
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• 2024

Purpose: Recently, high-protein diets have become highly popular, and the market for protein products has steadily increased in Korea together with the development of various types of such products. However, there is limited information on the consumption of protein supplements (PS) or protein-fortified foods (PF). Thus, this study aimed to evaluate the use of PS/PF among young adults in Jeju. Methods: A total of 350 adults (140 men and 210 women) aged 19-39 years voluntarily participated in this study from June 2022 to May 2023. PS/PF use was measured using a questionnaire. Dietary intake was assessed using a 24-hour dietary recall. Results: Approximately 31.4% of the participants (n = 110) had consumed PS/PF for more than 2 weeks during the past year and 71.8% of them (n = 79) were still consuming these products (PS/PF consumers). The PS/PF consumers tended to be male and physically active (p < 0.05 for all). The most frequent reason for PS/PF use was muscle gain (59.5%), followed by protein supplementation (19.0%) and body fat loss (13.9%), and the most frequent type of PS/PF consumed was powders (70.6%), followed by drinks (17.7%) and bars (8.8%). The PS/PF consumers tended to consume a high-protein low-carbohydrate diet compared to the non-consumers. The prevalence of consuming dietary protein less than the estimated average requirement (EAR) was significantly lower in PS/PF consumers (13.9%) compared to non-consumers (25.4%; p = 0.0316). Conclusion: These findings indicate that the necessity of protein supplementation should be determined based on the current dietary protein intake and individual requirements. The study also provides the basic information for establishing guidelines for appropriate protein intake.

• Korean Security Journal
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• no.13
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• pp.529-550
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• 2007

In proportion to the increase of public security demand, the private companies advanced continuously every year. However the size of the industry expanded in its quantity, the quality remains the same as before. So it's important to training of the security officers. This study suggest the improvements of training system through the analysis and the review of problems of training and education security officers. To develop our private security industry, we suggest as follows. First, In spite of the training is important, the recognition against security officers training is low, so the improvement is demanded. Second, When selecting the educational institution, it does not reflect the demand and situation of education enough. So there is necessary that selecting the educational institution again, after finishing a demonstration duration. Third, The education contents is general, so there is a necessity of the education which is professionalized. Fourth, In order to improve the ability of the lecturer, we must strengthen the qualification of the lecturer. Fifth, For the development of securities industry, we must found the professional training institution.

• Korean Security Journal
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• no.54
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• pp.37-56
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• 2018

Safety is considered as a very important factor when tourists select tourist spots, which means that the desire for safety in the tourism industry is very high. Therefore, a specialized field for the safety of the tourism industry is necessary. Already, there are staff members who are responsible for safety in various tourism sectors, but they have been led through knowledge based on work experience without professional education. In order to train specialists who are responsible for the safety of the tourism industry, research in related fields is indispensable, and universities in charge of research and education systematically construct surveys of related fields, and through experts I have to train. In the field meaning tourism security, there is Hospitality Security. Hospitality means 'to hospitality', 'to be entertaining', Hospitality Industry is used to cover the tourism industry in its exhaustive sense. Security is a term that refers to safety and security. Therefore, Hospitality Security which the two meanings together, that is, korean word hospitality security, tourism security can be said. Already in the US experts in the field of Hospitality Security explained the importance through related books. Currently in Korea, well-known tourism related universities operate subjects in the Hospitality field, and the security field also manages subjects at several universities. So, We collected the subjects managed at each university, analyzed them, and selected subjects of Hospitality Security. If the results of research through continuous research accumulate, the value as academic will be further increased, and it will be possible to have a role responsible for the safety of the tourism industry by producing experts accordingly.