• Journal of Environmental Science International
• /
• v.18 no.6
• /
• pp.603-608
• /
• 2009

Activated sludge sewage treatment processes are difficult to be controlled because of their complex and nonlinear behaviour, however, the control of the dissolved oxygen level in the reactors plays an important role in the operation of the facility. For this reason, this study is designed to present a system which accurately measures DO, MLSS, pH and ORP in the aeration tank to alleviate situations above and provide the automatization of a sewage treatment plant (STP) using new DO control system. The automatic control systems must be guaranteed the accuracy. Therefore, the proposed automatic DO control system in this study could be commercial applications in the aeration tanks by means of operating cost analysis and user-friendly for operation and maintenance. We could get accurate data from the lab tank which has water quality checker because there was no vortex and air bubble during the measurement process. Improvement of confidence in the lab tank enabled effective and automatic operation of sewage treatment plants so that operation costs and manpower could be saved. If this result is put in place in every sewage treatment plant nationwide for practical purposes, it is estimated to cost 18.5 million dollars in installing the lab tank and to save 9.8 million dollars in management cost a year, except for cost saved by automation.

• Korean Journal of Human Ecology
• /
• v.14 no.2
• /
• pp.331-339
• /
• 2005

This study analyzes data on the management of university dormitories and provides information to enhance university students' welfare. The data used in this study are from the Korean University Dormitory Administrator Conference, which surveyed 71 universities in a year of 2001, 70 universities in 2002, and 82 universities in 2003. The data analysis was conducted with descriptive statistics, One-way ANOVA, Duncan's multiple range test. The results are as follows; 1. Most dormitories had less than 500 residents, which account for below 10% of each university's overall student enrollment. The fact reveals that the capacity of most dormitories is too small considering overall student enrollment. 2. Freshmen took up the highest rate of the dorm residents and seniors did the lowest. Dorm residents had various kinds of events and parties, such as "Open House" and "Welcome Party." 3. Maintenance expense and price of meals tended to increase, whereas self-government membership fee and deposit for facility use decreased. 4. Minimum needs of the dorm residents were satisfactorily met, but more subsidiary facilities for residents' welfare needed establishing.

• Journal of the Korean Institute of Rural Architecture
• /
• v.17 no.4
• /
• pp.9-16
• /
• 2015

This study examined the current conditions of the community facilities constructed by demonstration project for rural elderly that were promoted for the last two years by the ministry of agriculture, food and rural affairs. The type of community facilities are community living home, community food service facility and small bath house. And it was accomplished satisfaction survey for analyzing the effects of demonstration project focused on inhabitants and users of community facilities constructed by demonstration project. The results are as follows. First, The satisfaction index of community facilities was evaluated high level in generally. Second, Inhabitants and users of facilities were presented high level satisfaction in humanity sector, especially. Third, It should be to establish maintenance and management plan such as supporting of linkage program and operation cost for secure the sustainability. Consequently, the implementation of community facilities demonstration project to improve the living conditions of rural elderly is entirely appropriate. The results of this study were considered to promoting demonstration project for improving quality of the facilities and securing effectiveness of the project.

• Journal of the Korean Institute of Rural Architecture
• /
• v.15 no.4
• /
• pp.59-68
• /
• 2013

This study aims to propose the future plan and research management of a beach and the relation between spatial structure of a village and layout of the beach focusing on Gimnyeong beach among the 12 general beaches in Jejudo. The results are as followings: First, Gimnyeong beach had the relation to primary industries of residents in the village in times past and was the space for everyday lives of residents. However, at present it has the relation to tertiary industries and is more important in community activities. Second, the entry part and the sandy beach of Gimnyeong beach were crucial in location and function in times past but total size of the beach has expanded for campground nowadays. Therefore, it is necessary to change the location of entry part to center part of the beach. In addition, convenient and safe facilities are need to be built more to corresponding to expanding area of the beach. Finally, in order to maintain clean sea, residents in the Gimnyeong have agreed to not make sea farms in the vicinity of Gimnyeong Beach which pollute the sea. Their roles have influenced on positive effect to community of the village, management of the beach, and maintenance of clean sea.

• Journal of the Korean Institute of Rural Architecture
• /
• v.20 no.1
• /
• pp.45-52
• /
• 2018

The purpose of this study is to investigate safety and dangerous awareness of environment on walking trails. For this purpose, questionnaire survey are carried out by people who had experience using walking trails during 2016. It is evaluated that environments of walking trails located inside big cities are inferior than ones located in small and medium-sized cities and countryside in air pollution, bed smell, water pollution, noise, and waste. Needs about management and number installed public restroom are high for hygienic environment of walking trails. With waste treatment, users of 2.4 percentage are showed improper behavior that they left their rubbish at the place out of view but others bring their trash. Accident likelihood is highly appreciated and possibility of physical accident like slipping is showed at the highest. The reasons of accident on walking trails are responded with carelessness of walkers and improper of installation or management of safety facility at the most. For safety environment of walking trails, needs of installation of safety fences and notices of dangerous area are requested. In order to separate prevention from paths of walking trails, signposts are needed at visual clearness, maintenance, installation with proper interval and location, and correct contents. Respondents of 2.4 percentage have experiences of accident on walking trails and physical accident like slipping is occurred at the most.

• Korean Institute of Interior Design Journal
• /
• v.14 no.6 s.53
• /
• pp.157-167
• /
• 2005

The demands of nursing home for the dementia are rapidly increasing. However, there are no enough nursing homes and design guidelines for it. This study was intended to examine the needs of the staff for the nursing home design and suggest the design guidelines of the Korean nursing home for the dementia. The subjects were 15 nurses and 18 care givers who worked in D hospital for the elderly with dementia in Busan. Data were collected by the self-administered questionnaire. The findings were as follows; First, the most important design element in nursing home for the dementia which the staff mentioned was 'healing environment' and then 'function' and 'maintenance' Second, the care-givers were more satisfied with their facility design than the nurses. Third, the staff pointed out that 'the relation between individual room and nursing station', namely, short distance between them, and 'enough wandering space' had to be considered at first in design process of nursing home with dementia. Also, the comfort and intimate interior mood, fresh air and sunlight were also pointed out as the important elements in nursing home design for the dementia.

• Journal of The Korean Society of Agricultural Engineers
• /
• v.54 no.1
• /
• pp.1-9
• /
• 2012

This study aims to assess the mobile information technology as an alternative means for managing information of irrigation facilities. Traditional irrigation facility management which is operated manually has faced to critical limitations, such as delayed and loss in data handling and facilities misidentification. Real time download, collection, and update the information about the irrigation structure conditions in terms of operation and maintenance can provide a better support of the management efforts. Thus this study suggested mobile information technology using RFID (Radio Frequency IDentification) and QR (Quick Response) code for real time information management of irrigation facilities. This paper describes the applications and implementation results of real-time mobile technology for the field information communication of the irrigation facilities. The system was tested in I-dong irrigation districts in Gyounggi-province, Korea and the assessment of operability demonstrated beneficial usability for inspection of agricultural irrigation facilities in the irrigation district. The tests showed that RFID was preferred method expected to improve operability although these had some limitation. The mobile technologies are expected to increase efficiency and effectiveness of irrigation facilities management.

• Journal of Korean Society of Water and Wastewater
• /
• v.21 no.2
• /
• pp.165-175
• /
• 2007

Performance indicators haven't been used for the assessment of the wastewater treatment facility or management in Korea yet, therefore they are going to be important parts in wastewater utilities because they are used to understand present situation and to compare one with other wastewater utilities. In this study, we used performance indicators to assess the condition of wastewater utilities and they were divided into four categories (A, B, C, and D). A category represented the condition of the planning & construction and composed of wastewater supply, disaster defence and employees. B category represented maintenance of wastewater utilities and were composed of manhole, sewer, and technical employees. C category showed the operation efficiency of wastewater utilities and D category represented the environmental load. To analyze the situation of wastewater utilities overall, cluster analysis was performed using four categori' es indicators. And CCC (Cubic Clustering Criterion) and R-square were used to decide the proper number of clusters, and wastewater utilities of 48 cities were divided into 5 groups(I, II, III, IV, and V groups). Each cluster was analyzed by average and standard deviation to understand the situation of wastewater utilities. A group analysis showed that IV and V clusters were insufficient, B group showed that I and IV groups were insufficient, C group showed all clusters are above average, and D group was also like C group.

• Journal of Korean Society of Water and Wastewater
• /
• v.32 no.1
• /
• pp.37-45
• /
• 2018

This study develops a model to estimate the economic life of the large-diameter water supply pipeline in Korea by supplementing existing methods used to perform similar calculations. To evaluate the developed methodology, the model was applied to the actual target area with the conveyance pipe in P waterworks. The application yielded an economic life computation of 39.7 years, considering the cost of damages, maintenance, and renewal of the pipeline. Based on a sensitivity analysis of the derived results, the most important factor influencing the economic life expectancy was the predicted failure rate. The methodology for estimating the economic life of the water supply pipeline proposed in this study is one of the core processes of basic waterworks facility management planning. Therefore, the methods and results proposed in this study may be applied to asset management planning for water service providers.

• Journal of Korean Academy of Nursing
• /
• v.14 no.1
• /
• pp.34-49
• /
• 1984

This study was carried out to collect basic information of the budget and management of the nursing service equipment A survey was conducted with charge nurses (72), head nurses (400), supervisors (93), nursing directors (43) in 134 Hospitals The questionnaire was consisted of 34 questions related to management of budget, facility, supplies, and equipment We investigated from l0th to 22nd, Oct 1983. The results obtained were summarized as follows: 1) A budget for the department of nursing was 65.4% (51/78) 2) A budget commitee was 43.6% (34/78) 3) 51.3% took corrective action for the deviation from the budget, if indicated (40/78) 4) An established lost conciousness program in the hospital was 87.2% (64/68) 5) A formalized system for the maintenance of supplies for the patient care units was 87.2% 6) 87.9% had stocks level which was established for patient care units. 7) 64.6% had safeguards for the storage of special equipment which was investigated regularly in 54.7%. 8) The director of nursing or her representative, participates in the selection was 72.4%, 9) 58.2% was provided instruction in the use of equipment by manufacturers of technical equipment.