• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2008년도 하계종합학술대회
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• pp.1189-1190
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• 2008

Wireless sensor networks (WSN) have attracted much attention in recent years due to their potential use in many applications such as border protection and combat field surveillance. Given the criticality of such applications, maintaining a dependable operation of the network is a fundamental objective. However, the resource constrained nature of sensor nodes and the ad-hoc formation of the network, often coupled with an unattended deployment, pose non-conventional challenges and motivate the need for special techniques for dependable design and management of WSN. In this article, we highlight the potential of careful positioning of the base station (BS), which acts as a sink resources.

• 한국방재안전학회논문집
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• 제8권2호
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• pp.1-10
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• 2015

재난은 점차 복합, 대형화되고 있다. 이러한 재난 발생 시에는 기관 간 상호협업을 통해 신속하게 대응해야한다. 하지만 우리나라는 재난 대응 시 각 분야(기관)별로 지휘체계를 분리해서 운영하고 있어 통합적인 재난대응에 한계가 있다. 따라서 본 연구에서는 재난유형 및 규모에 관계없이 적용 가능한 '한국형 재난현장 통합대응 표준체계'를 개발하였다. 다수기관들이 공통적으로 사용 가능한 표준편제, 표준행동요령(SOP), 표준용어를 개발하였으며, 표준체계를 실현하기 위한 법/제도적 뒷받침의 필요성을 제시하였다. 통합대응 표준체계의 활용을 통해 재난현장의 일원화된 지휘/통제, 기관들의 대응 업무 명확화, 원활한 의사소통이 가능해지며, 재난대응 및 수습을 신속하게 진행할 수 있을 것으로 기대된다.

• Corrosion Science and Technology
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• 제6권3호
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• pp.120-127
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• 2007

In any developing nation major investment goes for infrastructure and it is not exception in India. Good numbers of buildings, bridges, shopping malls, car parks etc. are coming up with steel for sustainable development. Thus protecting the structures from corrosion are the challenges faced by professionals for all types of steel structures. About 3% of GDP is accounted for loss due to corrosion. To combat this up to date corrosion map is called for as the country has wide variation of climatic zones with vastcoastline. Logically organic paint system can be prescribed based on the corrosion rate on bare steel with respect to environment. Present paper will emphasis on the study conducted on two types of structural steel coated with organic paint located in twomarine environment having been exposed for three years, Test coupons made from steels both bare and coated are deployed at two field stations having marine (Digha) and industrial marine (Channai) environments. Various tests like AC impedance DC corrosion, polarisation, salt spray test, $SO_2$ chamber and Raman spectroscopy were carried out both in laboratory on fresh as well as coupons collected from exposure sites. Rust formed on the bare and scribed coated coupons are investigated. It is found that normal marine environment at Digha exhibits higher corrosion rate than polluted marine environment in Channai. Rust analysis indicates formation of ${\propto}$-FeoOH protects or reduces corrosion rate at Channai and formation of non-protective ${\gamma}$-FeoOH increases corrosion rate at Digha. The slower corrosion rate in Channai than at Digha is attributed due to availability of $SO_2$, in the environment, which converts non‐protective rust ${\gamma}$-FeoOH to protective rust ${\propto}$-FeoOH. While comparing the damage on the coated panels it is found that low alloy structural steel provides less damage than plain carbon steel. From the experimentations a suitable paint system specification is drawn for identical environments for low medium and high durability.

• Korean Journal of Acupuncture
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• 제34권1호
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• pp.1-7
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• 2017

Objectives : The purpose of this study was to evaluate effects of taping therapy on recovery of behavioral symptoms and neural excitability of the lumbar spinal cord in rat model for ankle sprain. Methods : Adult Sprague-Dawley rats was used and divided into 3 experimental groups: normal group(n=6), ankle sprain(n=6), and ankle sprain with taping treatment(n=6). In order to induce ankle sprain the right ankle joint was injured with 4~5 repetitive over-flexions and over-extensions manually. The severity of joint pain was evaluated by measuring foot weight bearing force ratio(FWBRF) of the hind limb and the injury-induced edema formation by diameter of the joint following ankle sprain. The changes of neural excitability in the lumbar spinal cord was tested by observation of cFos protein expression, a metabolic marker for neural excitation. Results : Severity of ankle injury induced in this experiment coincided with Grade 1 ankle sprain. Compared with ankle sprain group, ankle sprain＋taping showed a significant reductions of joint pain as well as of edema formation at the ankle joint following ankle sprain. There was significant upregulation of cFos-immunoreactive neurons in the lumbar spinal cord 24 hours after ankle sprain. In contrast, taping therapy resulted in significant inhibition of cFos-immunoreactive neurons in the lumbar spinal cord. Conclusions : Collectively, these results suggest that taping therapy may be an alternative therapeutic intervention for symptom recovery of the mild ankle sprain.

• International Journal of Computer Science & Network Security
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• 제22권7호
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• pp.404-412
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• 2022

An increasing number of students from different cultures study in higher primary schools. This trend is due to: 1) the government's discourse on increasing the level of participation of foreign students in national educational programs and the need for internationalization; 2) the need of employers for professionals who are trained to work in a multicultural environment to meet the needs of different markets and customers. Methodology. This study is based on the results of the OECD (2018) structured survey of 1,093 teachers at universities in Australia, Colombia, the Czech Republic, Denmark, Georgia, Malta, Vietnam, Turkey, and Argentina, examined policy, the practice of cultural characteristics in training specialists, and teachers' attitudes to cultural diversity. Results. The attitude and perception of cultural features by teachers does not determine the practice of forming a cultural environment and managing this environment to ensure quality education of students of different nations. The main culturological aspects of training are self-expression of cultural and ethnic identities, expression of cultural characteristics and their value through multicultural activities in universities, teaching students to combat ethnic or cultural discrimination. Therefore, the formation of a multicultural environment in higher education occurs through the activities of students and teachers, which complement each other. The practical value lies in identifying two important components of the formation of cultural diversity among students, such as self-expression of ethnic and cultural identity and the expression of cultural differences by teachers in the course of educational activities.

• Journal of Plant Biotechnology
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• 제6권1호
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• pp.1-7
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• 2004

Forestry sector has witnessed some unprecedented events in the recent past both in terms of galloping biotechnological developments and heated environmental debates over risks associated with release of transgenic trees. Improvements in the in vitro propagation techniques has made it possible to develop tissue culture based plant regeneration protocols just for about any tree species. And with the inclusion of every new species within the realms of tissue culture technology, it becomes a candidate for genetic improvement through recombinant DNA technology, the so called genetic engineering. Poplars and their hybrids serve as the model tree species on which most of the genetic transformation work as been carried out. A lot of work has also gone in genetic transformation of fruit trees and trees of horticultural interests. Trees have been successfully transformed for traits ranging from reduction of length of juvenile phase to alteration of tree architecture to altering wood quality by lignin and cellulose modification. More-over trees have been genetically engineered successfully to combat various types of insect pests and pathogens causing diseases. But all these developments have ignited controversies over the possible benefits and risks associated with transgenic plantations by various environmental agencies and activists. Solutions to most of these concerns can be found out with more intensive prioritized research.

• Biomaterials and Biomechanics in Bioengineering
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• 제1권1호
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• pp.41-50
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• 2014

Gold nanorod's exceptional light to heat transduction is a robust phonomenon that has been extensively verified. The phenomenon is a trait from which many novel applications across disciplines have been proposed. In this investigation, the feasibility of utilizing heat harvested from such photothermal method to combat cancer is presented. Using non-invasive laser methods, an in vivo study is conducted on mouse ear tumors administered with gold nanorods (Au NRs). An emphasis is placed on monitoring the tumor developments after photothermal treatments, over time. The findings reveal significant tumor growth surpression at a threshold laser power of $0.6W/cm^2$ lasting 2 minutes; this energy also brought about dramatic size reduction in treated tumors. Furthermore, the apparent formation of an eschar over the laser treated region indicates extensive hemorrhagic necrosis of the tumor tissue; a phenomenon implicative to the inhibition of angiogenesis.

• 셀메드
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• 제8권2호
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• pp.7.1-7.12
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• 2018

Greying of hairs or Canities (Sheeb) is a hair disorder characterized by premature graying of scalp hair, beard, moustache etc. In Unani system of medicine (USM), the causes of premature greying of hairs, concept behind graying of hairs, principles of treatment, preparations that prevent premature greying of hairs, regimen, systemic and local treatment to stimulate pigmentation and the most interesting point is the use of different type of hair dyes (khizabat) is all illustrated. Classical texts described black, red, blond and white hair dye preparations with formulae and method of use. Initially for the hair graying management, utilizing simple and complex substances from plants, minerals, metals and mixture of these was the main method, which satisfied the desire to change the colour of the hair. With the advancement in chemical science, dyes formulaes, method of formation and application are changed. But due to the awareness about demerits of chemical dyes, people are looking back towards the natural ways to combat hair greying and herbal hair dye is an alternative. This paper is an overview of Unani drugs of local and internal use for hair greying with special attention towards herbal dyes. Most commonly used herbs in khizaab with their actions and constituents has been summarized. This is an effort to globalize the benefits of Unani herbs in hair greying problem. In short, International demand for hair dyes has been steadily growing and there is a wide scope for exploring different aspects of hair greying treatment and dyes in USM.

• Journal of Microbiology and Biotechnology
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• 제28권9호
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• pp.1426-1432
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• 2018

Staphylococcus aureus causes a broad variety of diseases. The spread of multidrug-resistant S. aureus highlights the need to develop new ways to combat S. aureus infections. Sortase A (SrtA) can anchor proteins containing LPXTG binding motifs to the bacteria surface and plays a key role in S. aureus infections, making it a promising antivirulence target. In the present study, we used a SrtA activity inhibition assay to discover that isovitexin, a Chinese herbal product, can inhibit SrtA activity with an $IC_{50}$ of $28.98{\mu}g/ml$. Using a fibrinogen-binding assay and a biofilm formation assay, we indirectly proved the SrtA inhibitory activity of isovitexin. Additionally, isovitexin treatment decreased the amount of staphylococcal protein A (SpA) on the surface of the cells. These data suggest that isovitexin has the potential to be an anti-infective drug against S. aureus via the inhibition of sortase activity.

• Journal of the Korean Data and Information Science Society
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• 제27권6호
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• pp.1525-1536
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• 2016

학군장교 (ROTC)는 대학에 재학 중인 우수 학생들을 선발하여 2년간 군사교육을 실시하고 졸업과 동시에 장교로 임관시켜 군의 초급 지휘자로 활용하는 제도로서 규모나 역할로 봤을 때 우리나라의 군과 사회에서 차지하는 비중이 매우 크다. 따라서 ROTC 출신 초급장교들의 리더십을 향상시켜 우리나라 군의 무형 전투력을 성장시키는 것이 매우 중요하다. 본 연구의 목적은 학군장교 양성교육 프로그램이 학군장교 리더십을 향상시키기 위해 적절한 교육을 제공하고 있는지 파악하고 개선방안을 제시하는 데 있다. 먼저 학군장교 교육 프로그램을 크게 세 분야로 나누어 1, 2차 설문조사를 실시한 뒤, 카이제곱 검정 (chi-square test), 분산분석 (ANOVA), 던컨의 다중검정 (Duncan's multiple range test) 등의 통계분석 방법들을 이용하여 교육프로그램에 직간접적으로 관련된 조사대상자들의 교육에 대한 실태 및 인식을 비교 분석한다. 또한 다중회귀분석 (multiple regression analysis)을 이용하여 학군후보생 리더십의 기본요소인 육군리더의 3대자질 형성에 영향을 미치는 세부요소들을 분석한다.