Journal of the Korean Society for Marine Environment & Energy
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v.16
no.3
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pp.181-188
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2013
The increase of carbon dioxide ($CO_2$) emission is known as one of the major causes of global warming, and it has a strong influence on the global environment. Therefore many researchers and politicians have tried to regulate the $CO_2$ emission. In regards to the matter, the IMPACT (Inclusive Marine Pressure Assesment and Classification Technology) committee under the Japan Society of Naval Architects and Ocean Engineers (JASNAOE) has developed an inclusive environmental impact assessment index, so-called "Triple I(III)", in order to assess the environmental impact including economic factors due to the artificial development of marine. In this study, III was applied to compare between the environmental impact of $CO_2$ emitted by container vessels during their life-cycle period and economic benefit due to their operating. Furthermore, III was also applied to assess the comprehensive environmental impact for the cases with various capacities of container vessels and different sailing route. From the results, the case for shortening of the sailing route is more effective to get the advantageous assessment results of III than the case for varying the size of vessels.
Journal of the Korean Society of Environmental Restoration Technology
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v.19
no.1
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pp.25-43
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2016
This research was completed to provide fundamental data regarding the guidelines to installing and managing utility facilities & structures in wetland protected area to advance the functions and sustainable use of ecology services by preserving the ecology within wetland protected area. There were 5 on-site researching areas that were used as the main subject with these areas chosen and considered from 21 inland wetlands that have been designated and are being managed from the Ministry of Environment and by their designated dates as a wetland protected area. The utility facilities in these wetland areas were categorized by their types and a detailed on-site investigation was proceeded with investigation items chosen whereas these facilities are working by their roles from their location, size, used materials, types, information contents and etc., The results showed that regarding informational structures, several locations of information boards were distanced from the main exploring routes which did not consider the visitor's eye level which had their readability dropped and by sunlight, time lapse and water penetration, many information boards were damaged or corrupted so that it was hard to confirm the information noticed or understanding an image. Insufficient observation and educational structures were installed that considered the ecological characteristics of wild animals and their living conditions. Regarding convenience facilities, there were parking lots that were installed on the fore-land and to decrease non-point solution sources, some parking lots needed to be located in protected lowlands while some facilities' shape and colors did not harmonize with their natural surroundings, creating a sense of awareness, which will need some more consideration. As for safety facilities, they were very insufficient compared to other facilities. This means that additional safety structures are needed so that related personnel can be aware of where a visitor is located when an accident occurs. Protectional facilities strongly needed new structures and a management system to cut off entrances and do surveillance so that visitors do not go into areas outside of the managed areas and bring damages to restricted locations. Research labs needed to expand the use of automatic weather systems and water gauge equipments to build fundamental data regarding floodgates that are intimated to the forming of wetlands. Sensor cameras and other types of monitoring systems are needed to monitor the majority types of animals living in the wetlands as well.
Journal of the Korea Academia-Industrial cooperation Society
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v.19
no.7
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pp.396-406
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2018
The purpose of this study was to investigate the causal relationship between factors affecting the quality of life (QOL) of call center representatives by applying the PRECEDE model to structural equation modeling. The subjects of the survey were 695 consultants engaged in inbound work at four call centers in D metropolitan city. Data collection was conducted using structured, self-administered questionnaires from November 15th to December 5th, 2016. The results of this study show that the QOL of the reps was significantly negatively correlated with mental health and emotional labor but significantly positively correlated with work environment, self-efficacy, organizational support, and organizational commitment. The results of structural model analysis show that mental health had a negative influence on QOL, whereas work environment and self-efficacy had a positive influence. In addition, emotional labor had a negative effect on mental health, but organizational commitment and work environment had lowered emotional labor level. In addition, organizational support had enhanced employee self-efficacy and organizational commitment, and organizational commitment had mitigated emotional labor. Therefore, it is necessary to implement a health promotion program to improve the QOL of call center reps.
Journal of the Korea Academia-Industrial cooperation Society
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v.21
no.5
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pp.577-584
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2020
This study examined the effects of management consultant competency (ability, professionalism) and consulting service quality (reliability, assurance) on organizational creativity and innovation. The research target was companies with experience in consulting, and sample data from 62 surveyed companies (80 persons) were analyzed using SPSS 25.0 and Smart PLS 2.0 based on statistics to perform frequency analysis, reliability, and feasibility analysis. The summary of the research results is as follows. First, it has been verified that consultant competency (ability, professionalism) and consulting service quality (reliability, assurance) had positive impacts. Second, service reliability and assurance, which are components of consulting service quality, significantly affected consulting performance (organizational creativity, innovation). Taken together, management consulting has a positive effect on creativity and innovation in an organization and ultimately contributes to improvement of the business performance of the company, depending on the competency of the consultant and quality of the services provided. Based on the results of this study, we intend to improve the quality of SME consulting by providing theoretical and practical implications as well as contribute to the growth of SMEs requiring innovation in the era of the 4th Industrial Revolution.
Journal of the Korean Society of Marine Environment & Safety
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v.23
no.4
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pp.347-353
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2017
In this study, numerical experiments were conducted to identify distribution of rising flow and flux in the East Sea of Korea, where the coastal upwelling occurs. Temperature and salinity data from CTD observations and NIFS during summer 2013 were applied to the model. Numerical experiments were carried out with different wind speed (3, 6 m/s and 9 m/s) and direction (southerly and southwesterly), which represent the most frequent in summer conditions. As a result of calculation, upwelling flow rate was found to be highest in Pohang between five coasts(Hupo, Youngduk, Pohang, Ulsan and Busan). Comparing with southerly wind conditions, the rising flow rate is about 1.5 times greater when southwesterly wind was applied. Horizontal diffusion of the upwelling area is expected to have a speed of 17~22 km/day when a 9 m/s southwesterly wind is applied. If this wind continues over one week, a cold pool will be generated by upwelling that may reach to the Ulleung area.
Journal of Korean Tunnelling and Underground Space Association
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v.22
no.1
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pp.1-21
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2020
The domestic abandoned mines are generating subsidence and it is difficult to predict this subsidence and evaluate the risk. The study of the subsidence risk evaluation using the existing numerical analysis only applies the integrative property to the geological structure and ground condition, and analyzes the goaf peripheral plastic domain. Also, there is a realistic limit that only restricted materials can be apprehended in securing the input information, which leads to the low reliability of the numerical analysis result. In this study, 2-dimensional modeling was performed by applying the field geological structure and ground information targeting abandoned mine where the subsidence occurred. Also, the analysis model was revised by repeating the numerical analysis for the difference between the real subsidence ground information and the analysis result to be minimized by modifying the ground property. This revision was automated by applying the optimization technique and the gradational optimal design method dividing multiple ground properties was developed.
Depression in the medically ill is a common clinical problem that primary physicians and psychiatric consultants encounter. Treatment of such patients begins with a careful evaluation of the patient's medical and psychiatric conditions. The assessment of depression in the medical patients requires a multidimensional approach. Psychological instruments are also used as a method of assessment in these patients. First of all, what the therapists have to do is to find and remove organic causes. Psychosoical treatment includes dealing with the patient's resistance and despondency relevant to physical diseases. For biological treatment, it is important to select appropriate antidepressants. Therapists should be familiar with the side effects of the antidepressants as well as the patient's primary depressive symptoms, pharmacokinetics and pharmacodynamics of the available agents. In addition, special attention should be paid to the potential for drug-illness and drug-drug interactions. Tricyclic antidepressants can be still effectively used for patients with pain disorder, although a variety of new antidepressants such as selective serotonin reuptake inhibitors (SSRI), bupropion and venlafaxine could have more benefits in depression of the medically ill. However, electroconvulsive therapy can be recommended for refractory cases of depression in patients with medical illness.
The instructional consulting has emerged as an important teaching development program in university. So, this research aims to analyze the instructional consultation system in centers for teaching and learning in four-year-course universities and deduce implications from it. To this end, focusing on instruction consulting program types, status, and example cases for promotion, homepages were reviewed and phone interview was conducted from July to August, 2015. The results were as follows. First, 9 types of instruction consulting system in universities were found. Second, the status of offering the programs and implementing them did not correspond to each other. Third, universities were mainly using in-school consultants. Fourth, universities had various ways of using the results and reward systems. Lastly, as for the example cases, through various consulting programs, consultant pools, use of results and reward system, and connection with other programs, it was found that instruction consulting system was operated organically. The implications that the research result offers are as follows. First, there should be accurate diagnosis of instructors and customized consulting systems based on needs. Second, there should be supports inside schools and cooperation between external organizations that can help raise consulting teams of various backgrounds. Third, the instructional consulting should be made through joint considerations and reflections of instructors. Fourth, universities should provide systematical support for instructional consultation and have higher awareness about it.
Jang, Younghee;Lee, Ye Hwan;Kim, Jiyu;Park, Il Gun;Lee, Ju-Yeol;Park, Byung Hyun;Kim, Seong-Cheol;Lee, Sang Moon;Kim, Sung Su
Journal of the Korean Applied Science and Technology
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v.36
no.4
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pp.1088-1095
/
2019
The CKD extract is wastewater from which KCl in CKD has been removed to reuse CKD as a cement raw material, and tried to reuse no extracts due to problems such as wastewater treatment facility expansion. As a result of removing KCl by the ion exchange method, the pH of the extract after ion exchange decreased from 12.7 to less than pH 2, and it was confirmed that H+ of the cation exchange resin was dissolved in the extract through ion exchange. In addition, the selectivity of the ion exchange was removed in the order of Ca2+, K+, it was determined that the increase in the contact time to remove the K+ ions. The batch system had a contact time of 6 times or more, compared to the continuous system, and showed 4 times of K+ removal efficiency and 7 times of Cl- removal efficiency. It was showed by analyzing the pH of the extract that more H+ of the cation exchange resin was extracted than OH- of anion exchange resin as the pH of the extract was changed.
Because of short length between interchanges, traffic congestion has been caused by a lot of short trip traffic in the urban section of interregional expressway. Also, in case of expressway with Bus Only Lane, bus causes dangerous situation by conflicting between vehicles and buses in order to access from Bus Only Lane to IC. Therefore, this study aims to propose Express Lane applied by Bus Only Lane as a new lane operation in order to efficiently operate and to analyze the effectiveness on constructing Express Lane to the Pangyo-Hannam section in Gyeongbu Expressway. The study analyzes effectiveness by scenario using the micro traffic simulation tool, VISSIM 5.4. For this, the indicators which evaluate construction effect of Express Lane, are used by average delay time, average speed and total travel time. The results of the study showed the best effectiveness when Express Lane installed one, and it represented an ideal traffic condition when long distance trip traffic of the whole traffic is 25% in the study section. Therefore, the construction of Express Lane using Bus Only Lane achieves positive effectiveness on safety and expense aspect as well as uncongested flow.
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