• Journal of the Korea Academia-Industrial cooperation Society
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• v.12 no.11
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• pp.4924-4931
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• 2011

This research performed to evaluate a production processes reporting by the HACCP system of green vegetable juice products, containing lactic acid bacteria, stage of processing raw materials agricultural products and production facilities of general bacteria and pathogenic micro organism. General bacteria are found from four samples of storage of agricultural products at process stage and water was detected 8.67~14.67 CFU/ml. However, all samples were detected less than 105 CFU/ml as a legal standards after the process of UV sterilization. For the outcome of experiment of E.coli, E.coli O157:H7, B.cereus, L.moonocytogenes, Salmonella spp, Staph.aureus as the food poisoning bacterial, E.coli was detected until UV pre-step process in storage process and B.cereus was detected partly till 1st washing. Since all bacterial, Yeast and Mold are detected in main materials, pre-control method is a necessary to establish for decreasing with a number of initial bacteria of main materials and it is considered to establish the effective ways of washing and sterilization such as production facilities for cross contamination prevention of bacteria and Sthaphylococcus. Based on above results, the process of UV sterilization should be managed with CCP as an important process to reduce or eliminate the general and food poisoning bacterial of green vegetable juice products, including lactic acid bacteria. Therefore, it is considered to need an exhaustive HACCP plan such as control manual of UV sterilization, solution method, verification, education and training and record management.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.18 no.4
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• pp.669-676
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• 2017

Recently, due to the importance of information security, security vulnerability analysis and various information protection technologies and security systems are being introduced as a countermeasure against cyber-attacks in new as well as existing buildings, and information security studies on high-rise buildings are also being conducted. However, security system introduction and research are generally performed from the viewpoint of general IT systems and security policies, so there is little consideration of the infrastructure of the building. In particular, the BAS or building infrastructure, is a closed system, unlike typical IT systems, but has unique structural features that accommodate open functions. Insufficient understanding of these system structures and functions when establishing a building security policy makes the information security policies for the BAS vulnerable and increases the likelihood that all of the components of the building will be exposed to malicious cyber-attacks via the BAS. In this paper, we propose an architecture reference model that integrates three different levels of BAS structure (from?) different vendors. The architectures derived from this study and the security characteristics and vulnerabilities at each level will contribute to the establishment of security policies that reflect the characteristics of the BAS and the improvement of the safety management of buildings.

• Journal of the Korean Applied Science and Technology
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• v.31 no.3
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• pp.500-508
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• 2014

For this research, synthesis acrylic resin by ethyl acrylate monomer(EAM) and prepared samples which set by difference amount of monoammonium phosphate solution in waterborne acrylic resin. Use these resins, analyzed mechanical properties and thermal stability by films and leather surface coated. The test of DSC experiment sample WAC-APS3 was $410^{\circ}C$ Tm values which means the highest content of monoammonium phosphate had highest thermal stability in acrylic resin. According to measure data for solvent resistance, all samples showed good property. As known in the results, increase of ammonium phosphate constant did not influence to big change of resin properties. In abrasion test WAC-APS3 was good abrasion properties(68.729 mg.loss). Test of tensile strength, as increase as monoammonium phosphate resin analyzed low properties $1.505kgf/mm^2$ to $1.275kgf/mm^2$. In elongation case, same as strength test result 425 % to 384 % by increase to monoammonium phosphate amount in acrylic resin.

• Journal of the Institute of Electronics and Information Engineers
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• v.52 no.11
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• pp.87-104
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• 2015

Currently the IoT (Internet of Things) environments and related technologies are being developed rapidly through the networks for connecting many intelligent objects. The IoT is providing artificial intelligent services combined with context recognition based knowledge and communication methods between human and objects and objects to objects. With the help of IoT technology, many research works are being developed using the C-ITS (Cooperative Intelligent Transport System) which uses road infrastructure and traveling vehicles as traffic control infrastructures and resources for improving and increasing driver's convenience and safety through two way communication such as bus-only lane and license plate recognition and road accidents, works ahead reports, which are eventually for advancing traffic effectiveness. In this paper, a system for deciding whether the traveling vehicle is possible or not to drive on bus-only lane in highway is researched using the lane and number plate recognition on the road in C-ITS traffic infrastructure environments. The number plates of vehicles on the straight ahead and sides are identified after the location of bus-only lane is discovered through the lane recognition method. Research results and experimental outcomes are presented which are supposed to be used by traffic management infrastructure and controlling system in future.

• Journal of Korean Tunnelling and Underground Space Association
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• v.22 no.3
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• pp.277-291
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• 2020

Shield TBM is a tunnelling method that has a wider range of applications in the poor ground condition compared to conventional tunnels (Drill and Blast). Currently, a 13.3 m large-diameter slurry shield TBM is preparing for construction to pass under the Han River. Shield TBM is divided into slurry and EPB shield TBM, and management items during construction are different depending on each characteristic. In this paper, the equipment type, origin, application case and trouble case were analyzed for slurry shield TBM, which is mainly constructed in soft ground. In addition, 2D and 3D model tests were conducted on the condition of soil depth for the possibility of slurry leakage into front of the equipment, with appropriate chamber pressure. Based on this paper, it proposed to provide basic and reference data for proper excavation surface pressure and chamber pressure during construction of slurry shield TBM under soft ground conditions, and proposed measures to minimize stability and environmental decline due to slurry ejection.

• Journal of Yeungnam Medical Science
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• v.18 no.1
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• pp.59-66
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• 2001

Background: The purpose of this study was to determine the efficacy and safety of the anterior vaginal wall sling in the management of women with stress urinary incontinence. Materials and Methods: From January 1998 to December 1999, 42 patients(31 with genuine stress urinary incontinence and 11 with mixed urinary incontinence, 38 with anatomical incontinence and 4 with intrinsic sphincteric deficiency) underwent anterior vaginal wall sling at Yeungnam University Hospital were studied retrospectively. The mean age was 49.3 years(ranging from 34 to 66 years of age) and the mean follow-up period was 29.4 months(ranging from 16 to 40 months). Intra- and postoperative complication. success rate and patient's satisfaction were evaluated. Results: The mean operation time was 79 minutes(ranging from 65 to 124 minutes) and the mean hospital stay was 5.1 days(ranging from 4 to 10 days). Mean postoperative Foley catheter drainage was 2.1 days(ranging from 1 to 5 days). As a complication. bladder perforation occurred in one patient(2.4%). residual urine sensation developed in seven patients(16.7%), and suprapubic pain was complained in five patients(11.9%), which improved gradually. Vaginal epithelial inclusion cyst occurred in one patient(2.4%) at postoperative 31 months. Four(9.4%) patients with de novo instability were improved by anticholinergics medication. The success rate was 92.9% and 38 patients(90.5%) were satisfied with this procedure. Conclusion: We consider that the anterior vaginal wall sling to be a safe and effective surgical procedure for the treatment of female stress urinary incontinence, but a longer follow-up is necessary to determine long term effect.

• The Korean Journal of Blood Transfusion
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• v.23 no.2
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• pp.136-144
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• 2012

Background: Fresh frozen plasma (FFP) transfusion is administered primarily for management of acquired bleeding disorders. However, in practice, FFP transfusion is increasing without a solid rationale. Methods: We conducted an audit to evaluate the appropriateness of the indications for FFP transfusion during the period from July 2010 through June 2011. Assessment of the appropriateness of the indications was based on the national transfusion guidelines and the transfusion criteria promulgated by the Severance Hospital. Results: In total, 17,733 units of plasma were transfused to 1,949 patients over 4,982 events. We found that administration of FFP was not in compliance with the recommended guidelines in 1,990 events. The number of total FFP transfusions was higher in medical departments (Gastroenterology) than in surgical departments (Thoracic and cardiovascular surgery, General surgery). However, the proportion of cases of inappropriate transfusion was higher in surgical departments than in medical departments. Both the total number of FFP transfusion and the proportion of inappropriate transfusion were high in patient with neoplasm, disease of the digestive system, and diseases of the circulatory system. Conclusion: Continuous monitoring on appropriateness for FFP transfusion and feedback to the physician are critical in securing the transfusion safety as well as maintaining the quality of FFP transfusion. New-found indication for FFP transfusion should be investigated and applied in timely manner.

• Journal of Radiation Industry
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• v.9 no.1
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• pp.47-55
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• 2015

Research and investigation is required for the exposure dose of radiation workers to work in the dental hospital as increasing interest in exposure dose of the dental hospital recently accordingly, study aim to minimize radiation exposure by making a follow-up study of individual exposure doses of radiation workers, analyzing the status on individual radiation exposure management, prediction the radiation disability risk levels by radiation, and alerting the workers to the danger of radiation exposure. Especially given the changes in the dental hospital radiation safety awareness conducted the study in order to minimize radiation exposure. This study performed analyses by a comparison between general and dental hospital, comparing each occupation, with the 116,220 exposure dose data by quarter and year of 5,811 subjects at general and dental hospital across South Korea from January 1, 2008 through December 31, 2012. The following are the results obtained by analyzing average values year and quarter. In term of hospital, average doses were significantly higer in general hospitals than detal ones. In terms of job, average doses were higher in radiological technologists the other workes. Especially, they showed statistically significant differences between radiological technologists than dentists. The above-mentioned results indicate that radiation workers were exposed to radiation for the past 5 years to the extent not exceeding the dose limit (maximum $50mSv\;y^{-1}$). The limitation of this study is that radiation workers before 2008 were excluded from the study. Objective evaluation standards did not apply to the work circumstance or condition of each hospital. Therefore, it is deemed necessary to work out analysis criteria that will be used as objective evaluation standard. It will be necessary to study radiation exposure in more precise ways on the basis of objective analysis standard in the furture. Should try to minimize the radiation individual dose of radiation workers.

• Korean Journal of Comparative Education
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• v.27 no.3
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• pp.129-159
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• 2017

This study examines the social recognition of teachers' treatment and teaching profession through the comparison and analysis of the teachers' remuneration systems in the Republic of Korea(hereafter, Korea) and Canada. For this purpose, literature review and qualitative research were conducted. As a result of comparing and analyzing the orientation of teachers' remuneration systems in both countries and perception of teachers, the following differences were found. First, in terms of the management philosophy of the remuneration system, Korea emphasized the efficiency of the national competitiveness dimension, while Canada focused on the interrelationship with development of individual-oriented competency. Second, although the remuneration systems for teachers in both countries are quite different, they have aimed at establishing a reasonable remuneration system, which considers equality in common. But the position on equality was different between the two countries. In the case of Korea, equity was considered by comparing the pay scale with those of other government employees, while equity in Canada mainly had to do with gender equality. Third, the teachers of both countries regarded the sense of duty and ethics as important qualities of the teaching profession, and they recognized the social safety net as an indicator of their social status. However, there was a difference in attitude toward the teaching profession. In Korea, it was deemed to be a stable and socially desirable profession, but the entry barriers were quite high and the remuneration system was relatively rigid. In Canada, on the other hand, it was easy to enter the teaching profession and the remuneration system was far less rigid. But teachers were more likely to quit or take a second job, and their social status fluctuated.

• Journal of Korea Water Resources Association
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• v.52 no.spc2
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• pp.801-810
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• 2019

This study analyzes the impact on geomorphic changes downstream due to alternate bars developed weir upstream through laboratory experiments. The disturbance, such as a spur in the side wall, of the flow at the inlet of the channel triggers the development of alternate bar upstream at the beginning of the experiment, and gradually moved downstream with keeping their shapes over time. The bed in the downstream of weir in the mid of channel scoured due to the scarcity of sediment inflow because weir upstream traps it. Moreover, bar migration speed decreases as the bars approaches to the weir with time. However, as time increases, the alternate bars upstream migrate over the weir, and sediment in the eroded bed of the weir downstream are deposited. The phase of the bar upstream changes oppositely after passing through the weir. The phase of the bar downstream changes rapidly as the shape of alternate bar is clear upstream, which is affected by the strong disturbance. The phase of bar changes, and the bar migration speed decreases gradually with time, and finally stopped due to forcing effects on the bar by the disturbance. The faster the reaction of alternate bar with a long spur, the larger the bar height formed downstream and the shorter the bar length. This means that the larger the forcing effect of bar, the more it affects the bar migration. In addition, although the size of the alternate bar increases over time, the bar doesn't migrate downstream and a forced bar is generated.