• Journal of the Korean Association of Oral and Maxillofacial Surgeons
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• v.41 no.6
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• pp.293-298
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• 2015

Objectives: Infection involving the orbit, zygomatic space, lateral pharyngeal space, or hemifacial and oral floor phlegmon is referred to as cervicofacial infection (CFI). When diagnosis and/or adequate treatment are delayed, these infections can be life-threatening. Most cases are the result of odontogenic infections. We highlight our experiences in the management of this life-threatening condition. Materials and Methods: This was a retrospective study of patients who presented with CFI from December 2005 to June 2012 at the Oral and Maxillofacial Surgery Clinic or the Accident and Emergency Unit of Ahmadu Bello University Teaching Hospital (Zaria, Nigeria). The medical records of all patients who presented with either localized or diffuse infection of the maxillofacial soft tissue spaces were retrospectively collected. Data collected was analyzed using SPSS version 13.0 and are expressed as descriptive and inferential statistics. Results: Of the 77 patients, 49 patients (63.6%) were males, a male to female ratio of 1:7.5. The ages ranged from two years to 75 years with a mean of $35.0{\pm}19.3$ years, although most patients were older than 40 years. The duration of symptoms prior to presentation ranged from 6 to 60 days, with a mean of $11.0{\pm}9.4$ days. More than 90% of the patients presented to the clinic within the first 10 days. The most commonly involved anatomical space was the submandibular space (n=29, 37.7%), followed by hemifacial space (n=22, 28.6%) and buccal space (n=7, 9.1%). Ludwig angina accounted for about 7.8% of the cases. Conclusion: CFI most commonly involves the submandibular space, typically affects individuals with a low level of education, and is influenced by traditional medical practices. Despite improved health care delivery, CFI remains a significant problem in developing countries.

• Journal of Digital Convergence
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• v.15 no.7
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• pp.41-53
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• 2017

This study focuses on the current state of Smart Grid policy in Japan and its problems while the interest in Smart Grid has been increasing since the March 2011 earthquake in East Japan. As a result of the analysis, Japan introduced the fixed price buying system of new and renewable energy in response to the power supply and demand problem caused by the 2011 earthquake in East Japan, and established a decentralized green electricity trading market in which electricity generated from new and renewable energy is traded Smart Grid-related projects were implemented as a solution to solve energy crisis and environmental problems at the same time. As a result, we achieved visible results such as suppressing peak power, reducing CO2 emissions, and securing stable supply and demand of energy using renewable energy sources. On the other hand, the improvement of current Smart Grid policy operation in Japan and the introduction of stabilization system of power system, promotion of international standards of domestic technology related to smart grid, and support for strengthening security of smart grid.

• Journal of Digital Convergence
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• v.15 no.7
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• pp.247-257
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• 2017

The purpose of this study was to measure the depression level of college students and to analyze the effects of college life stress and circadian rhythm on depression. A questionnaire survey was conducted to 720 students of college in Gwangju area from October 10, 2016 to October 31, and 687 of the collected questionnaires were analyzed. As this result, 34.5% of the students needed treatment for depression, and 71.6% of the students had mild depression. Second, depression was higher in female students, in higher grade students and students living apart from their parents. Third, evening activity type showed higher depression than morning activity type. Fourth, regression analysis revealed that depression was influenced by stress of value problem, circadian rhythm, academic stress, and getting a job stress. The results of this study suggest that students should be able to detect depression early and run a mental health program to relieve college life stress in college. However, this study is limited to some local college students and is not suitable for generalization. It is necessary to conduct research to compare university students and college students in the future.

• Journal of the Institute of Electronics Engineers of Korea TC
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• v.45 no.6
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• pp.20-26
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• 2008

Today, there are many high speed data access systems that provide the truly "anytime and anywhere" services. Especially, HSDPA (High Speed Data Packet Access), one of the main third generation mobile communication systems, provides 14.4Mbps maximum data throughput. However, HSDPA will fail to provide high data throughput in hostile multipath fading environments due to lack of LOS (Line of Sight). HAPS (High Altitude Platform Station) is one of the solutions to this problem. HAPS system not only provides Los, but it can also provide high data rate services to the conventional terrestrial systems. This paper proposes HAPS-HSDPA system model and compares performance of HSDPA and HAPS-HSDPA.

• Journal of IKEEE
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• v.21 no.4
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• pp.381-387
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• 2017

Stress at work has become a serious problem affecting many people of different professions, life situations, and age groups. Stress management should start far before the stress start causing illnesses. In this study, studies were conducted to evaluate stress by measuring the Galvanic skin Response(GRS), Electrocardiograph(ECG), and Electroencephalogram(EEG) generated during images and noise stimuli. The GRS amplitude showed that the stress situation was 27.9 % higher than the baseline. And after the stimulus period, the response time of baseline was longer than 71.6 % than the stress situation. The stress response characteristics of the HRV showed that the rate of change in RMSSD was 16.4 %, and the rate of change of the HF Power was 29.7 %. EEG showed that the frequency band was gradually changed to the ${\theta}$ wave band during stress stimulation. We will be able to utilize image stimuli and noise stimuli as an objective indicator of stress and correlation.

• Asia-Pacific Journal of Business
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• v.1 no.1
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• pp.1-22
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• 2010

In theoretical term, cultural/institutional approach, the peculiarly of the later comers, such as Hong Kong, Korea, Twain, and the converging influence from Post-modernism underlie this paper. The first approach is influential in understanding the survival of many traditional values within most of the Hong Kong firms. The later comer one can be used to explain the fact that later comer enjoyed various synergy effects when their oriental values are combined with new practices. The last one is also quite useful for the explanation of why most modern firms exposed to a severe international competition adopted human resource management But problem is that these are subjected to severe criticism because of their downgrading nature against employees.

• Industry Promotion Research
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• v.2 no.2
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• pp.45-52
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• 2017

this study, the problem of the quality is analyzed by questionnaire analysis of the current quality managers, and the German meister system, the Japanese name deduction system, the functional manager, and the quality manager system. First, we set up a quality guide selection classification guide model. Secondly, we set up a model for combining experience and expertise with theory. Third, we set up a quality brand application model to enhance competitiveness of SMEs. Fourth, The basic model is presented. The expected effects of these models are that, in the knowledge-based economy, in terms of identifying, fostering, and utilizing superior talents, quality experts combine academic theories and experience in each field to provide core expertise and knowledge, As a transformative leader and expert, we will become a leader of innovation activities by enhancing corporate competitiveness, developing younger leaders, and cooperating with suppliers. In order to strengthen competitiveness of SMEs, It will be possible to scale and cultivate the technology of SMEs.

• Journal of Arbitration Studies
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• v.23 no.4
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• pp.3-27
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• 2013

Overriding Mandatory rules are laws that purport to apply irrespective of the law chosen by the parties to govern their contractual relations. This article examines their role and applicability in international arbitration. The overriding mandatory rules pose a complex and continuing problem for arbitrators because they put the interests of states and parties in direct competition. When a law says that arbitrators must apply it, yet the parties' contract excludes it, what should the arbitrators do? Where should their allegiance lie? The answer depends on the underlying nature of arbitration - and since that can be legitimately conceptualized in different ways, a principled approach to overriding mandatory rules seems to be impossible to provide. Nevertheless, a practical solution is required, because there were European cases in which courts voided valid arbitration agreements made, reasoning that arbitrators certainly would not apply and/or take into account its overriding mandatory rules of indemnity right granted to commercial agent and distributor in Europe. Therefore, this paper first examines status of overriding mandatory rules of another law in international litigation and then explores any possibility of application of overriding mandatory rules of another law in international commercial arbitration. With this analysis, the author reaches into a conclusion that the arbitrator should and/or take into account overriding mandatory rules of another law, yet should limit to them of the country where characteristic performance is made under the contract.

• Journal of Korean Society of Coastal and Ocean Engineers
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• v.9 no.2
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• pp.97-104
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• 1997

A hyperbolic numerical model with multi-directional waves has been used to investigate harbor tranquility in Pohang New Harbor. Comparing numerical results with field data measured at two stations in the harbor, it was found that use of input condition of multi-directional waves is superior to the use of uni-directional waves. Calculations with unidirectional wave input give errors of about 12% at St. P2 and 26% at St. P3, while calculations with multi-directional wave input give errors of 4 % at St. P2 and. 14% at St. P3. Using the input condition of multi-directional waves, we investigate the tranquility of Pohang New Harbor with two layouts : the condition in 1994 when the downtime at the 7th pier was often reported and the condition in 1996 when the 4th disposal site was constructed. The numerical results show that the problem of downtime at the 7th pier cannot be solved by the construction of the 4th disposal site.

• Korean Journal of Community Nutrition
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• v.20 no.1
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• pp.53-60
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• 2015

Objectives: The purpose of this study is to provide the basic data for efficient operation and management of the military foodservice by analyzing the satisfaction of the quality of the foodservice and the perception of the military foodservice which are provided according to the ranks of the soldiers. Methods: A total of 252 military personnel (48 Private, 87 Private first class, 74 Corporal and 43 Sergeant) participated in Gyeonggi area from November 1 to 30, 2013, and data were analyzed by the SPSS Win (ver 18.0). Results: The perception with foodservice, variety of menu (p < 0.001), importance (p < 0.01), problem (p < 0.05) and leftover reason (p < 0.05) significantly differed by the rank of the soldiers. With regard to the satisfaction with food, there were significant difference by rank for all items (p < 0.01). Satisfaction with facilities did not indicate significant differences by rank. Satisfaction with sanitation indicated significant difference by rank in the categories of table ware (p < 0.05), process of distribution (p < 0.05), employee's uniform (p < 0.001) and drinking water (p < 0.05). Satisfaction with service indicated significant difference by rank with regard to kindness of employees (p < 0.01), providing information on foodservice (p < 0.05) and fast distribution (p < 0.01). Conclusions: In order to improve the satisfaction of all ranks, there is a need to offer a variety of nutritionally balanced menu and a proper amount of food provided through the voluntary food distribution services. The results also suggested the need to find a sustainable foodservice management plan to carry out satisfaction surveys regularly in the military foodservice.