• Information Systems Review
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• v.13 no.3
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• pp.165-183
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• 2011

IT organizations have been consistently required to change in order to cope with business and technological changes. However, the practical methodologies or guidelines about IT organization redesign are deficient. This research investigates IT organization's redesign methods and procedures focused on K public corporation which fundamentally redesigned IT organization recently. In K public corporation, to-be model of IT organization was designed with job analysis for IT organization redesign, task redesign was performed, and IT organization and personnel was assessed. 1) In task analysis, core activities are identified and 96 standard tasks are drawn. 2) with to-be organization design, IT support, IT delivery, IT operation teams and BuKyoung and Jeju teams were divided. 3) Previous job organization was restructured, IT organization personnel were finally confirmed through FTE and internal review. K public corporation strengthened IT planning task instead of reducing operational IT task, improved IT management process which was lower than other companies, and improved IT outsourcing management system and IT users' satisfactions. This research has practical implications for many companies which struggle with IT organization redesign method and process.

• Journal of Korea Water Resources Association
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• v.44 no.10
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• pp.787-795
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• 2011

Extreme water events such as heavy rainfalls due to recent climate change are continually increasing and their scale has also shown an increasing trend. To overcome these natural disasters, this policy study suggests securing lateral river space as an effective method for extreme flood. To support the importance of restoration and expansion of lateral river space, Gumi upstream region of the Nakdong River basin was chosen as a target area and flood reduction analysis of the washland by using LISFLOOD model have been examined. The 500-year frequency flood was simulated for the estimation of possibly occurable flood level and it turns out that the secured lateral river space on the selected site effectively lowers about 0.53 m flood level and reduces the flood damage of the city on the lower reaches of the river. In addition, based on this result, multilateral river space securing plans were compared, and conservation easement and natural disaster insurance were suggested for sustainable and cost-effective alternatives. The costs of land purchase and conservation easement for securing the river space were also compared.

• Journal of the Economic Geographical Society of Korea
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• v.14 no.4
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• pp.506-523
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• 2011

Since the 1990s, the handmade shoes industrial agglomeration district has formed in the city center, Hyangchon-dong, Jung-gu in Daegu. This paper aims to examine the formation process, to analyze the viability, and to propose policy implications of manufacturing industrial districts in a city center through studying this industrial district. The district's creation began as the result of the dissolution of local production and marketing system of handmade shoes in the 1980s, the excellent accessibility of the location and an inexpensive rent. The district's core viability lies in the external economies derived from local networks through social divisions of labor of production and marketing systems. Because of the lack of organizers of the social division of labor and 'integrated production system done by single business', the effect of external economies created by the social division of labor is limited. To get over this limitation, the district should to be restructured into a 'cultural street of leather crafts' as a part of 'making modern historical and cultural belt' programs within Daegu downtown regeneration policies. To support the restructuring, public assistant measures such as the establishment of a corporate services center should be strengthened.

• Journal of the Society of Cosmetic Scientists of Korea
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• v.37 no.4
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• pp.347-350
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• 2011

Biofilms are surface-attached microbial communities with phenotypic and biochemical properties distinct from free-living planktonic cells. Biofilm bacteria show much greater resistance than planktonic counterparts and much higher concentration of biocide is needed to treat biofilms compared to the dosage used for planktonic bacteria. As a result, alternative strategies or more effective agents exhibiting activity against biofilm-producing micro-organisms are of great interest. Therefore, we turned our attention to control of biofilm of S. aureus. The aims of this research are to investigate substances which inhibit the formation of biofilm by S. aureus and to suggest effective materials for controlling skin problems. We coated slide glasses with human placental collagen and the coverslip was incubated with test materials and bacteria. The coverslip was stained with crystal violet and we measured optical density of each sample. The biofilm inhibitory activity was calculated by crystal violet staining degrees. In this study, S. aureus ATCC 6538 was used as test organism. Our results show that both water soluble and insoluble Hinoki cypress polysaccharide strongly inhibited biofilm formation. Whereas, green tea and sunset hibiscus root extract promoted biofilm. Xylitol showed a concentration dependent effect; high concentration (3 % and 5 %) of xylitol reduced biofilm while promoted biofilm formation at a concentration of 1 %. These results support that Hinoki cypress polysaccharide and xylitol have ability to suppress biofilm formation.

• The Journal of Korean Academy of Sensory Integration
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• v.9 no.1
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• pp.11-20
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• 2011

Purpose : In this study, we tried to know that how the occupational therapists applied the core principles of Ayres's sensory integration(ASI) intervention for clients by using the method of self-assessment. Methods : The study period was from May 2010 to June 2010. The subjects were therapists who use a sensory integration intervention. We letted them to do self-assessment about degree of performing the treatment according to the core principles of ASI by using a questionnaire. Total 66 questionnaires were collected. SPSS for Windows version 15.0 was statistically analyzed. Results : There wasn't anybody without considering the 10 core principles of ASI interventions for children. Therapist's answer(more than 90%) was sometimes, often, always except for the guide self-organization in the 10 core principles of ASI intervention. On the basis of total average score of raw score of 10 core principles of ASI intervention, provide sensory opportunities, provide just-right challenges, collaborate on activity choice, maximize child's success, ensure physical safety, and foster therapeutic alliance showed more than 50 points(T value). The guide self-organization, support optimal arousal, create play context, and arrange room to engage child showed less than 50 points T value. Conclusion : The most effective interventions for sensory integration is the treatment based on the core principles of ASI intervention. According to core principle of ASI intervention, checking the quality of care and increasing the quality of care is needed through performing self-assessment.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.38 no.1
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• pp.20-28
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• 2012

Introduction: The objective of this research was to determine the incidence of oral cancer in Korea. Materials and Methods: The classifications of oral and maxillofacial cancer (OMFC) that we used are based on possible locations of OMFC: lip, tongue, mouth, salivary glands, tonsil, oropharynx, nasopharynx, hypopharynx, pharynx unspecified, and nose, sinuses. Results: 1) There were 2,848 OMFC cases, accounting for 1.6% of all cancers. The male to female ratio was 2.72:1. 2) The estimated crude rates (CRs) were 5.7 overall, 8.4 for males, and 3.1 for females. The age-standardized incidence rates (ASRs) were 4.6 overall, 7.3 for males and 2.3 for females. 3) The incidence of mouth cancer was highest. The mouth and salivary glands were the most frequent sites for cancer among males and females, respectively. 4) Patients who were 40 years or older accounted for 91% of OMFC cases, with the highest proportion of cases in the 60-69 year-old age group for both sexes. 5) Tongue cancer was the most prevalent OMFC overall. Nasopharyngeal cancer was highest among males, and salivary gland cancer was highest among females. 6) From 2004 to 2008, the relative 5-year survival rate of OMFC patients was 57.5%. There was a trend of increasing survival among OMFC patients during the study period. The survival rate for females (69.3%) was much higher than that for males (53.1%). Conclusion: Social and personal efforts should be required to increase the survival rates of OMFC patients and Korean national cancer management policy should establish new measures for economic and social management and support.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.48 no.2
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• pp.28-37
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• 2011

With growing concerns about healthy life recently, although the podiatry which deals with the whole area for diagnosis, treatment of foot and leg, and prevention has been widely interested, research in our country is not active. Also, because most of the previous researches in data analysis performed the quantitative approaches, the reasonable level of reliability for clinical application could not be guaranteed. Clinical data mining utilizes various data mining analysis methods for clinical data, which provides decision support for expert's diagnosis and treatment for the patients. Because the decision tree can provide good explanation and description for the analysis procedure and is easy to interpret the results, it is simple to apply for clinical problems. This study investigate rules of item of diagnosis in disease types for adapting decision tree after collecting diagnosed data patients who are 2620 feet of 1310(males:633, females:677) in shoes clinic (department of rehabilitation medicine, Chungnam National University Hospital). and we classified 15 foot diseases followed factor of 22 foot diseases, which investigated diagnosis of 64 rules. Also, we analyzed and compared correlation relationship of characteristic of disease and factor in types through made decision tree from 5 class types(infants, child, adolescent, adult, total). Investigated results can be used qualitative and useful knowledge for clinical expert`s, also can be used tool for taking effective and accurate diagnosis.

• Journal of the Institute of Electronics Engineers of Korea CI
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• v.48 no.3
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• pp.82-90
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• 2011

Multi-core system is becoming more general with development of microprocessors. Due to this change in performance improvement paradigm, switching conventional single thread applications with multi thread applications. Performance monitoring tools are used to optimize application performance because of complexity in development of multi thread applications. Conventional performance monitoring tools are focused on performance itself rather than user friendliness or real-time support. Real-time performance monitor identify the problem while multi-threaded applications should be performed as well as check real-time operating status of the application. So it can be used as an effective tool compared to non-real-time performance monitor that only with simple performance indicators to find the cause of the problem. In this paper, we propose RMPM(Real-time Multi-core Performance Monitor) which is real-time performance monitoring tool for multi-core system. Observation period is optimized by comparing relation between overhead due to performance evaluation period and accuracy. Our performance monitor shows not only amount of CPU usage of whole system, memory usage, network usage but also aspect of overhead distribution per thread of an application.

• CRM연구
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• v.4 no.1
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• pp.19-34
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• 2011

Recently, companies have interests in the adoption and diffusion of customer relationship management(CRM). And, as information and communication technologies and Internet technologies proliferate, they also have interests in e-CRM, which implements CRMusing online communication channels. Until now, many researchers have tried to identify the success factors of CRM and evaluate their relative importance. However, only a few studies have dealt with the success factors of e-CRM. For this reason, we aim at identifying and evaluating the success factors of e-CRM in order to provide the companies with the guideline for preparing the implementation of e-CRM. Our study adopts analytical hierarchy process(AHP) as a tool for evaluating these factors because it has been widely applied and validated for a long time. Whereas prior studies have analyzed the success factors from the organizational and technological perspective, our study analyzes them from the functional perspective. As a result, we found that the companies should manage all the CRM components including analytic-operational-collaborative CRM in good balance. Also, we found that the sufficient support from CEO, the acquisition of good quality customer data, and theonline processing capability for responding customers' requests effectively are important for the success of e-CRM.

• Journal of Internet Computing and Services
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• v.13 no.2
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• pp.41-49
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• 2012

Wireless network support and extended mobile network environment with exponential growth of smart phone users allow us to utilize the network anytime or anywhere. Malicious attacks such as distributed DOS, internet worm, e-mail virus and so on through high-speed networks increase and the number of patterns is dramatically increasing accordingly by increasing network traffic due to this internet technology development. To detect the patterns in intrusion detection systems, an existing research proposed an efficient algorithm called the jumping window algorithm and analyzed approximately 2,000 patterns in Snort 2.1.0, the most famous intrusion detection system. using the algorithm. However, it is inappropriate from the number of TCAM lookups and TCAM memory efficiency to use the result proposed in the research in current environment (Snort 2.9.0) that has longer patterns and a lot of patterns because the jumping window algorithm is affected by the number of patterns and pattern length. In this paper, we simulate the number of TCAM lookups and the required TCAM size in the jumping window with approximately 8,100 patterns from Snort-2.9.0 rules, and then analyse the simulation result. While Snort 2.1.0 requires 16-byte window and 9Mb TCAM size to show the most effective performance as proposed in the previous research, in this paper we suggest 16-byte window and 4 18Mb-TCAMs which are cascaded in Snort 2.9.0 environment.