• KSCE Journal of Civil and Environmental Engineering Research
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• v.36 no.3
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• pp.551-564
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• 2016

Earthworks are the fundamental steps in a construction job, and are mainly comprised of smaller tasks performed by construction machinery. The productivity of the construction job can be improved by optimizing excavation, filling, and other such operations. Earthworks involve a lot of mechanical work performed by the collaboration between various kinds of construction equipment, which in turn leads to higher fuel consumption. Actual earthworks depend mostly on the intuition and experience of the driver of the machines, thus leading to inefficiency and environmental problems caused by unnecessary emission of carbon, Recently automated and information-oriented technologies are consistently being researched towards the improvement of efficiency of earthworks in the construction industry. The present research involves the introduction and understanding of the decision-making elements of heuristics which can be applied to the earthwork planning. A method is also suggested for creating an effective work path for construction machine to perform task packages (TP) for cutting and filling processes. A simulation test is performed to verify the effectiveness of suggested methods in terms of space interference and total moving distance of construction equipment.

• The Journal of the Korea Contents Association
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• v.13 no.1
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• pp.417-424
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• 2013

The purpose of this study is to find out the effect of macroeconomic variables on the hotel profitability and suggest the reasonable way to handle them. To achieve this purpose, seven macroeconomic variables were used as an independent variable. These were the index of industrial production, West Texas Intermediate, the consumer price index, the unemployment rate, the money supply, the trade balance and the exchange rate. And ROA and ROE of total hotels were used as a dependant variable respectively. As the result of regression, it was found that the index of industrial production and the exchange rate had a significant and positive effect on ROA. And West Texas Intermediate, the consumer price index and the unemployment rate had a significant and negative effect on ROA. Also the consumer price index and the unemployment rate had a significant and negative effect on ROE and the exchange rate had a significant and positive effect on ROE. Through the analysis two key variables were found to be very important ones. These were the unemployment rate and the exchange rate. So the hotel managers need to emphasize on the good price of domestic hotel products and supply the various productions and services to the guests when the exchange rate is increased. But when the unemployment rate is increased, the hotel managers should consider to supply the middle price products with the hight price products.

• Korean journal of food and cookery science
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• v.31 no.5
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• pp.605-613
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• 2015

This study assesses the consumption of seaweed by Koreans using a survey questionnaire. 1,218 subjects were surveyed. Those individuals were divided into inland and coastal regions. Statistical analyses were conducted using the SAS package (ver 9.1). The results of this study are summarized as follows: Of the survey respondents 46.5% were male and 53.5% were female. Inland and coastal residents were divided nearly equally (50.4% and 49.6% respectively). Overall slightly more respondents reported a dislike of seaweeds (52.8% vs 47.2%) and the major reason for their dislike was the smell. With respect to gender and age preference, more females liked seaweed than males (p<0.01) and individuals over thirty were more favorable when compared to those in their teens and twenties (p<0.001). Coastal area residents liked seaweed significantly more than that of inland residents (p<0.01). Respondents reported eating seaweed at home (50.8%) and at restaurants (28.2%). The cooking methods used for dishes with seaweed included: soup (44.8%), wrapped in seaweed (21.8%), and seasoned dishes (19.4%). The most popular item among processed seaweed products was beverages. 26.5% of respondents were getting their food and nutrition information through television and radio programming. In conclusion, the results of this study provides baseline and useful information for the development of marketing plans for seaweed products.

• Journal of Digital Convergence
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• v.11 no.10
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• pp.639-651
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• 2013

This study aims to improve caregiver's labor conditions, to provide a high-quality care service and to offer basic research information for developing a standardized job content of caregiver. The study establishes basic principles for a standardized job content with a literature review and then collects basic information of caregiver's task with an observation technique. The study based on the observation technique develops 11 job categories and 72 duty categories expected to do by the caregiver. The study examines acute care hospitals that provide joint care services in Seoul and Gyeonggi province. Sixty caregivers who work at these hospitals are carried out a survey regarding a specific task of caregiver, an importance of task and a frequency of task. Collected data is analyzed using statistical package SPSS 18.0, and descriptive statistics (frequency, percentage, average, standard deviation) is reported. An analysis of frequency is used to analyze target for research. From the collected information, tasks of caregiver are sorted into 10 job categories and 60 duty categories. As a result of the study, tasks of caregiver are sorted into 10 job categories and 68 duty categories based on the observations technique. One job category and four duty categories are added to the final survey based on an interview with professionals and officials in the field of care service but, one additional job category and four duty categories based on the interview are excepted from the result of the analysis. The interview with professionals and officials is nothing meaningful on the task analysis of caregiver.

• Proceedings of the CALSEC Conference
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• 1999.11a
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• pp.529-534
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• 1999

전자상거래는 구매자와 판매자 모두에게 많은 이점을 제공할 수 있어 최근 이에 관한 연구들이 많이 진행되고 있다. 특히 중소제조업체의 경우, 전자상거래라는 경영환경의 변화는 새로운 기회로 다가오고 있어, 상대적으로 기술력이 취약한 중소제조업체의 전자상거래를 지원하기 위한 요소 기술들의 개발 필요성이 점차 부각되고 있다. 이에 본 연구에서는 중소 금형제조업체의 판매과정을 사이버 공간에서 수행할 수 있는 전자상거래 기술을 개발하였다. 일반적으로 변화하는 경영환경에서는 생산과 관련된 계획과 통제가 보다 더 신속하고 정확하게 이루어져야 한다. 즉 전자상거래 환경에서의 제조업체는 구매자가 요구한 제품의 생산과 납기일을 맞추어 줄 수 있는지의 여부를 실시간으로 응답할 수 있어야 한다. 나아가서 인터넷을 통해 접수된 주문들은 해당 제조업체의 생산능력을 초과할 수 있는데 이 때에는 접수된 주문들 중에서 자사의 이익을 극대화할 수 있는 주문집합을 선별하여 접수여부를 결정해야 한다. 이와 같이 전자상거래 환경하에서의 제조업체는 생산과 관련된 정보를 신속하게 전달 받아 주문접수여부에 관한 의사결정을 올바르게 수행하는 것이 중요한데 본 연구에서는 중소 금형제조업체의 일정계획 및 주문처리를 위한 일정계획 기반의 선정 에이전트의 구조와 방법론을 제시하였다. 지금까지 일정계획에 관한 연구들은 대부분 납기일의 만족과 비용의 최소화 측면을 위주로 다루었다. 그러나 본 연구에서의 문제는 비용의 최소화보다는 납기일을 준수하면서 가장 많은 이익을 가져다 줄 수 있는 최적주문집합을 선정하는 문제를 다루고있다.자료를 수집하고, 통계분석 패키지를 이용하여 자료를 분석하였다. 방식을 결합한 하이브리드 형태이다.인터넷으로 주문처리하고, 신속 안전한 배달을 기대한다. 더불어 고객은 현재 자신의 물건이 배달되는 경로를 알고싶어 한다. 웹을 통해 물건을 주문한 고객이 자신이 물건의 배달 상황을 웹에서 모니터링 한다면 기업은 고객으로 공간적인 제약으로 인한 불신을 불식시키는 신뢰감을 주게 된다. 이러한 고객서비스 향상과 물류비용 절감은 사이버 쇼핑몰이 전국 어디서나 우리의 안방에서 자연스럽게 점할 수 있는 상황을 만들 것이다.SP가 도입되어, 설계업무를 지원하기위한 기본적인 시스템 구조를 구상하게 된다. 이와 함께 IT Model을 구성하게 되는데, 객체지향적 접근 방법으로 Model을 생성하고 UML(Unified Modeling Language)을 Tool로 사용한다. 단계 4)는 Software Engineering 관점으로 접근한다. 이는 최종산물이라고 볼 수 있는 설계업무 지원 시스템을 Design하는 과정으로, 시스템에 사용될 데이터를 Design하는 과정과, 데이터를 기반으로 한 기능을 Design하는 과정으로 나눈다. 이를 통해 생성된 Model에 따라 최종적으로 Coding을 통하여 실제 시스템을 구축하게 된다.the making. program and policy decision making, The objectives of the study are to develop the methodology of modeling the socioeconomic evaluation, and b

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.2
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• pp.368-377
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• 2019

The purpose of this study is to examine the present operation process and to suggest the points of improvement so that vocational education and training institutions can be activated more effectively. The subjects of this study were 250 college students who completed or attended the vocational education and training course in Seoul and Gyeonggi-do, and collected 230 data, excluding inappropriate responses. Data analysis was performed by using the statistical package program SPSS Statistics (Ver. 24: IBM, USA). In this study, frequency analysis was conducted to examine the characteristics of data, and crossover analysis was conducted mainly to investigate the correlation between categorical data. The results of this study are as follows: First, it provides information about vocational education and training course to all general high school students at the beginning of the first year of high school, and then, from the first semester of the second grade, do. Second, it is to open four major courses in beauty education at the same time. This makes it possible to acquire qualifications according to four beauty courses during the training period at the training institute rather than the private education institute where private education expenses are incurred. By training all major courses in skin, hair, make-up, and nail art, you will be given the opportunity to carefully determine the major course that fits your aptitude. Based on the results of this research, we propose a plan to improve the vocational education system for vocational high school students who are majoring in cosmetology.

• Design Convergence Study
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• v.17 no.2
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• pp.45-57
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• 2018

Sales for SPA brand names of private label apparels are on the rise in the domestic clothing market. The aim of this study is to analyze the characteristics of SPA brands and how each color system is proposed within the BI system. In this study, 8 brands were selected as the most popular SPA brands in Korea and abroad with stores based on brand power and sales and preference by consumers. Therefore, among information factors such as brand identity (BI) and color characteristic. sign system, package, and environmental factors, buildings facade and interior design of eight brands were investigated. Research into color application of BI revealed that four brands used red colors with different tones with different identity differentiation. For the other four brands, the company applied BI designs that gained the brand's character such as a black-and-white or dark blue one. Thus, it is considered important to select BI color in order to differentiate and enhance preferences in brand identity.

• Journal of Korean Tunnelling and Underground Space Association
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• v.26 no.2
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• pp.91-111
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• 2024

Most of utility cable tunnels are constructed utilizing shield TBM as part of the underground transmission line project. The TBM chamber is the only space inside the tunnel that encounters rock and soil, and is the place with the highest frequency of accident exposure, such as collapse and collision accidents. Since there is currently no way to measure the disc cutter wear from outside the chamber, frequent inspection by workers is essential. Accordingly, in this study, in order to prevent safety accidents inside the TBM chamber and expect the effect of shortening the construction period by reducing the number of chamber openings, the concept of disk cutter wear measurement technology was established and a prototype was produced. By considering prior technology and determining that magnetic sensors are most suitable for the excavation environment, wear measurement sensor package were developed integrating magnetic sensors, wireless communication modules, power supply, external casing, and monitoring systems. To verify the performance of the prototype in an actual excavation environment, a full-scale tunnelling test was performed using a 3.6 m EPB shield TBM. Based on the full-scale tests, five prototypes were operated normally among eight prototypes. It was analyzed that sensor measurement, wireless communication, and durability performance were secured within a maximum thrust of 3,000 kN and a rotation speed of 1.5 RPM.

• Journal of the Health Care and Life Science
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• v.11 no.2
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• pp.311-320
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• 2023

This study identified the relationship between empathy, tangibility, certainty, reliability, and educational satisfaction, which are sub-factors of educational service quality, and analyzed how educational service quality affects educational satisfaction through the moderating effect of mentoring. A total of 381 response samples were constructed for empirical analysis to analyze demographic characteristics, student use patterns, validity and reliability, correlation, and hypothesis verification, and a total of six hypotheses were established and verified using variables selected based on previous studies and preliminary surveys. First, as a result of the verification of Hypothesis 1, it was found that all constituent factors of education service quality had a positive (+) significant effect on education satisfaction. Second, as a result of the moderating effect of mentoring in Hypothesis 2, it was found that education satisfaction was increased in the confidence, reliability, and mentoring of education service quality. Therefore, empathy, tangibility, certainty, and reliability of education service quality are factors necessary to increase education satisfaction, and academy operators and managers are required to reflect this and operate strategies to increase the competitiveness of the academy.

• Journal of the Health Care and Life Science
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• v.9 no.2
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• pp.253-266
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• 2021

The purpose of this study was to identify the impact of facility safety design components of children's swimming pool facilities on parents' satisfaction and psychological stability. A total of 13 facilities used 324 out of 360 people collected through field visits as final research materials to achieve their goals. One-on-one in-depth interviews were conducted with a total of eight experts, including one administrator, three professors, one reporter, and three researchers. The following results were obtained using the IBM SPSS Statistics Ver. 24 statistical package: First, the facility safety design component factors affect the satisfaction of parents. Second, the factors of facility safety design components affect psychological stability. Third, parents' satisfaction factors affect psychological stability. Fourth, the facility safety design plan for children's swimming facilities is a total of four categories, suggesting 12 measures, including basic safety manual installation, use of mobile movement buffers, use of lane hypothetical steps, and up to 3:1 lessons for beginners.