• 시큐리티연구
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• 제41호
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• pp.185-212
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• 2014

이 연구는 국제사회의 안보에 큰 위험인 살라피 지하디스트 테러운동의 전체적인 흐름의 변화인 탈-알카에다 중심화에 대한 분석과 그 변화를 주도하고 있는 IS, 즉 "이슬람 스테이트(The Islam State: 이하 IS)"와 보코하람(Boko Haram)의 두 테러집단의 위험성 및 테러네크워크의 관계성을 분석한 연구이다. 이와 같은 연구 분석을 위해서 이 연구는 IS와 보코하람의 다양한 문헌분석을 통해 이들 집단들의 일반적 특성과 네트워크적 특성을 분석하고, START center의 GTD 데이터를 사용하여 이들 집단의 위험성을 분석하였다. 분석결과, 1988년 알카에다가 설립된 이후로 글로벌 지하디스트 테러집단의 테러활동과 그 네트워크는 약 네 차례의 변화를 겪은 것으로 이해되며 현재의 네 번째의 과정에서는 알카에다를 중심으로 이루어진 살라피지하디스트 테러운동이 지역분권화과정을 겪고 있는 있다고 이해하였다. 그리고 이러한 지역적 분권화는 IS와 보코하람으로 대표되는 극단적 살라피 지히다시트 집단에 의해 이끌어져 가고 있으며, 이들지역분권화된 지하디스트 테러집단은 작은 단위의 테러집단화로 인해서 글로벌 지하디즘의 목표를 궁극적으로 달성하기 어려운 취약성르 가지지만, 동시에 현재의 국제사회 더 큰 위협을 가져다 줄 수 있는 몇 가지 강력함을 가지게 되었다고 분석되었다. 이들 집단들이 내포하고 있는 구체적인 위험성에 대해 연구에서 설명되고 있다. 이 연구의 분석의 대상인 IS와 보코하람의 활동과 네트워크, 그리고 위험성 분석을 바탕으로 앞으로의 살라피지히다시트 테러운동의 방향성에 대해서 예측하고 가까운 미래의 전 세계의 대테러 안보전략의 방향성에 대해 논의하였다.

• The Journal of Asian Finance, Economics and Business
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• 제7권11호
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• pp.809-816
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• 2020

This study tests and analyzes the influence of empowering leadership on employee creativity which is mediated by psychological empowerment. Researchers conduct survey method on state-owned bank employees (ABC Bank) in Pacitan, East Java, Indonesia. Purposive sampling is selected with Likert scale as measurement. The population of this study is 166 respondents, who are permanent employees of the ABC Bank. The data analysis technique used is SPSS 24. The results of this study find that: (1) there is an influence of empowering leadership on psychological empowerment, (2) there is an influence of empowering leadership on individual creativity, (3) there is an influence of psychological empowerment on individual creativity, and (4) the influence of empowering leadership on individual creativity is mediated by psychological empowerment. This study ignores other types of leadership. Further study is needed to examine other types of leadership besides empowering leadership. The level of analysis of this study is individual, so further study could examine empowering leadership conceptualized at the group level because followers will be influenced not only by the dyadic relationship with the leader, but also by the dynamics of the members of the empowered group. This study provides theoretical enrichment from the aspect of empowering leadership, especially at the individual level. Leaders can increase employee creativity by empowering them to do their jobs. Additionally, by creating a work environment that ensures employees feel empowered psychologically.

• Structural Engineering and Mechanics
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• 제90권6호
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• pp.601-610
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• 2024

Free vibration of layered conical shell frusta of thickness filled with fluid is investigated. The shell is made up of isotropic or specially orthotropic materials. Three types of thickness variations are considered, namely linear, exponential and sinusoidal along the radial direction of the conical shell structure. The equations of motion of the conical shell frusta are formulated using Love's first approximation theory along with the fluid interaction. Velocity potential and Bernoulli's equations have been applied for the expression of the pressure of the fluid. The fluid is assumed to be incompressible, inviscid and quiescent. The governing equations are modified by applying the separable form to the displacement functions and then it is obtained a system of coupled differential equations in terms of displacement functions. The displacement functions are approximated by cubic and quintics splines along with the boundary conditions to get generalized eigenvalue problem. The generalized eigenvalue problem is solved numerically for frequency parameters and then associated eigenvectors are calculated which are spline coefficients. The vibration of the shells with the effect of fluid is analyzed for finding the frequency parameters against the cone angle, length ratio, relative layer thickness, number of layers, stacking sequence, boundary conditions, linear, exponential and sinusoidal thickness variations and then results are presented in terms of tables and graphs.

• Wind and Structures
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• 제12권2호
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• pp.103-120
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• 2009

Articulated tower platforms due to its compliant nature are more susceptible to the dynamic effects of wind than conventional fixed platforms. Dynamic response analysis of a double hinged articulated tower excited by low frequency wind forces with random waves is presented in this paper. The exposed super structure of the platform, housing the drilling and production facilities is subjected to mean and fluctuating wind loads, while the submerged portion is acted upon by wind driven waves. The fluctuating component of the wind velocity is modeled by Emil Simiu's spectrum, while the sea state is characterized by Pierson-Moskowitz spectrum. Nonlinearities in the system due to drag force, added mass, variable submergence and instantaneous tower orientation are considered in the analysis. To account for these nonlinearities, an implicit time integration scheme (Newmark's-${\beta}$) has been employed which solves the equation of motion in an iterative fashion and response time histories are obtained. The power spectra obtained from random response time histories show the significance of low frequency responses.

• Wind and Structures
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• 제11권2호
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• pp.97-120
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• 2008

Wind and wave loadings have a predominant role in the design of offshore structures in general, and articulated tower in particular for a successful service and survival during normal and extreme environmental conditions. Such towers are very sensitive to the dynamic effects of wind and wind generated waves. The exposed superstructure is subjected to aerodynamic loads while the submerged substructure is subjected to hydrodynamic loads. Articulated towers are designed such that their fundamental frequency is well below the wave frequency to avoid dynamic amplification. Dynamic interaction of these towers with environmental loads (wind, waves and currents) acts to impart a lesser overall shear and overturning moment due to compliance to such forces. This compliancy introduces geometric nonlinearity due to large displacements, which becomes an important consideration in the analysis of articulated towers. Prediction of the nonlinear behaviour of these towers in the harsh ocean environment is difficult. However, simplified realistic mathematical models are employed to gain an important insight into the problem and to explore the dynamic behaviour. In this paper, various modeling approaches and solution methods for articulated towers adopted by past researchers are reviewed. Besides, reliability of articulation system, the paper also discussed the design, installation and performance of articulated towers around the world oceans.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2013년도 춘계학술발표대회
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• pp.857-860
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• 2013

Companies that have high need of some computational resources for an specific space of time, nowadays, the pay as they use manner for resources required, that, is a good solution provided these days by some Cloud computing providers. Also solutions that represent a distributed computation for processes with high demand of calculation have appeared lately, the only problem is that when they are created, they need also be configured to share the same working space, this is the scope that comprehends this work, where the aim is to propose a framework that can be used as a solution of automation of the configurations that sometimes can take undetermined time and sometimes the user that configures it has to have a lot of knowledge and also configurations can turn in tricky ones generating a delay in the time where real productivity should be exploited.

• 유통과학연구
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• 제20권10호
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• pp.1-9
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• 2022

Purpose: This study examines the economic and technical reasons for the uneven distribution of broadband internet services in Indonesia before and during the recession due to the C19 pandemic, and examines its effect on the country's economy. Research design, data and methodology: The research was designed by conducting an economic feasibility, which was verified through area observations and interviews with providers and their association, as well as the Regulator. Results: The results show that during the C19 pandemic, there has been an increase in the distribution of broadband internet services in Indonesia since there has been an increase in demand for cellular services and fixed services together. However, the increase in broadband internet service coverage is still not evenly distributed in the country and unable to boost the decline in Gross Domestic Product during the C19 pandemic. Conclusions: The increase in fixed broadband coverage by seventy percent is an indication for the state to make policies to encourage bundling techniques between operators with the aim of internet services being more evenly distributed throughout the country. Where, the influence of a more even distribution of broadband internet services in all countries is believed to be able to support the country's economy.

• 대한방사성의약품학회지
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• 제9권1호
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• pp.35-41
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• 2023

Photodynamic therapy (PDT), in which a photosensitizer (PS), light, and molecular oxygen are essential components, is a non-invasive and highly effective cancer therapeutic method. However, PDT suffers from the penetration limit of light caused by attenuation and scattering of light through tissues constraining its use to skin and endoscopically accessible cancers. Cerenkov luminescence (CL) is defined as the light illuminated when charged particles move in a dielectric medium at a velocity greater than the phase velocity of light. It is known that medical radioisotopes in preclinical and clinical settings have enough energy to generate CL, and lately, CL has been exploited as an excitation source for PDT without external light illumination. This review introduces state of the art studies of radioisotope-based PDT for cancer, in which radioisotopes are utilized as a light source.

• Journal of Web Engineering
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• 제14권2호
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• pp.265-283
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• 2022

Bauhinia scandens L. (Family: Fabaceae) is commonly used to treat cholera, diarrhea, asthma, and diabetes disorder in integrative medicine. This study aimed to screen the presence of phytochemicals (preliminary and UPLC-QTOF-M.S. analysis) and to examine the pharmacological activities of Bauhinia scandens L. stems (MEBS) stem extracts. Besides, in silico study was also implemented to elucidate the binding affinity and drug capability of the selected phytochemicals. In vivo anti diarrheal activity was investigated in mice models. In vitro, antibacterial and antifungal properties of MEBS against several pathogenic strains were evaluated using the disc diffusion method. In addition, in silico study has been employed using Discovery studio 2020, UCFS Chimera, PyRx autodock vina, and online tools. In the anti-diarrheal investigation, MEBS showed a significant dose-dependent inhibition rate in all three methods. The antibacterial and antifungal screening showed a remarkable zone of inhibition, of the diameter 14-26 mm and 12-28 mm, by MEBS. The present study revealed that MEBS has remarkable anti-diarrheal potential and is highly effective in wide-spectrum bacterial and fungal strains. Moreover, the in silico study validated the results of biological screenings. To conclude, MEBS is presumed to be a good source in treating diarrhea, bacterial and fungal infections.

• The Journal of Asian Finance, Economics and Business
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• 제7권12호
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• pp.635-645
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• 2020

This research was conducted to achieve several objectives and focus research was based on financial behavior theory and prospect theory as grounded theory e.g., investigate the financial decision-making behavior between financial and real assets investment, and confirm the relationship existing between herding behavior and overconfidence factors to the level of loss and regret aversion, and financial literacy into real assets investment decisions. The study used 220 real estate auction respondents as investor samples at the State Assets and Auction Service Office Makassar, South Sulawesi, Indonesia. Data was collected through the use of a questionnaire consisting of 23 questions to measure the variables. Moreover, the research data passed through several feasibility tests like the inner and outer modeling by Partial Least Square - Structural equation model (PLS-SEM) while the hypotheses formulated were also tested to determine the magnitude of the variable relationship. Through the use of the direct and intervening test, loss and regret aversion variables have a positive and significant effect while financial literacy variables have no significant effect. There is a slight difference in the decision-making process for real assets and financial assets investors. Investment decision making behavior in the financial assets sector requires less complicated decisions compared to the decisions related to real assets investments.