This paper presents the structural model development and verification processes of wind turbine blade. The National Renewable Energy Laboratory (NREL) Phase VI wind turbine which the wind tunnel and structural test data has publicly available is used for the study. The wind turbine assembled by blades, rotor, nacelle and tower. The wind blade connected to rotor. To make the whole turbine structural model, the mass and stiffness properties of all parts should be clear and given. However the wind blade, hub, nacelle, rotor and power generating machinery parts have difficulties to define the material properties because of the composite and assembling nature of that. Nowadays to increase the power generating coefficient and cost efficiency, the highly accurate aerodynamic loading evaluating technique should be developed. The Fluid-Structure Interaction (FSI) is the emerging new way to evaluate the aerodynamic force on the rotating wind blade. To perform the FSI analysis, the fluid and structural model which are sharing the associated interface topology have to be provided. In this paper, the structural model of blade development and verifying processes have been explained for Part1. In following Part2 paper, the processes of whole turbine system will be discussing.

As the world energy consumption grows, the interest in marin energy resources is increasing. In excavating such resources, the marine riser which connects the floating structure and sea bed is an essential device. The riser system is often exposed to harsh ocean environment and thus vulnerable to damage. Since the failure of the riser system may cause serious economical loss as well as environmental problem, the structural integrity of the riser is very important. Generally, the riser is an extremely slender structure with a much smaller diameter than a length. Therefore, a structural integrity monitoring methodology for typical buildings and bridges may not be applicable. In this paper, the applicability of a damage identification method for a structure to a marine riser is examined via a numerical example. Also, recent research practices and findings for monitoring the behavior and the structural integrity of the marine riser are examined and summarized.

While Korea had achieved radical growth of construction industry, it also had accumulated problems in material, human and economical loss due to its low quality of safety level. Therefore, not only enterprises but also the nation is putting in a great deal of efforts for construction safety. However, its effect is not satisfiable. This research aims for change of construction cite by introduction of professional Safety Patrol Management System(SPMS) and consideration of its necessity. To consideration of its necessity, we compared and anaylzed average numbers of indicated dangers and safety accident incidences in each construction cites and we researched changes in worker's safety sense. It will establish the suitable design standards and suggest the basic database for estimating disaster and accident ratio.

An experimental study on the structural behavior of connection types between approach slab and integral abutment has been done for three typical bar connections. Typical hinge style reinforcing bar detail for its connection is preferred in order to accommodate rotation of the approach slab among engineers. However, the straight horizontal bars can be used as connection detail accomodate structural capacity. Total six specimens with three types of rebar detail are tested for direct tensile and bending load. The characteristic structural behaviors are carefully monitored and all the strain gauge data obtained are analyzed. It is shown that the structural performance of all the specimens well exceed its design allowance. Several design suggestions are given based on careful reviews on the experiment.

In this paper. the effects of the aspect ratio on the natural frequency of the advanced composite road structures is studied. The advanced composite structures are too difficult for such design engineers for construction and some simple but accurate enough methods are necessary. Some laminate orientations have decreasing values of  ,  ,  and  stiffnesses as the ply number increases. The plate aspect ratio considered is from 1 to 5. Most of the road structures have large aspect ratios, for such cases further simplification is possible by neglecting the effect of the longitudinal moment terms.

고 종횡비 MEMS 구조물의 습식 공정에서 세정 이후 건조 과정에서 발생하는 문제점들을 극복하기 위하여 초임계 이산화탄소를 이용한 고 종횡비의 MEMS 구조물의 건조방법에 대하여 조사하였다. 실험에 사용된 MEMS 구조물 습식 제조방법의 세정은 HF/water에서 식각된 cantilever beam을 isopropyl alcohol (IPA)로 치환하여 진행되었다. 초임계 이산화탄소에 의한 IPA의 제거율은 VOC 분석법을 통하여 다양한 조건에서 측정 되었고, 건조된 cantilever beam은 SEM을 이용하여 관찰하였다. 자연 건조를 통한 방법으로는 종횡비 1:15의 cantilever beam까지 stiction 없이 제조할 수 있었으나, 초임계 이산화탄소를 이용한 MEMS 구조물의 건조는 기존의 건조방법 보다 고 종횡비를 가지는 1:75의 cantilever beam까지 stiction 없이 제작할 수 있었다.

PURPOSES: Daejeon is basically divided into an old downtown and a new downtown, and the recent relocation of the Chungcheongnam-do Provincial Government of Republic of Korea from the old downtown and the opening of governmental buildings in the new downtown as well have made this new downtown only densely populated with industrial and business facilities. Such changes in the downtowns have promoted the conditions of the new downtown while, consequently, dragging down the old downtown. Out of concern for those unbalanced developments of the two downtowns, Daejeon is now carrying out several city projects to revive the old downtown. In the light of that, as a part of the project to promote the old downtown, this study aims to conduct an evaluation on landscape of the culture and arts street in Daeheungdong which was built upon those ideas of a theme street project by Daejeon. METHODS: Based on the findings from the questionnaire not only on the components that would design the streetscape of the culture and arts street but also on the public satisfaction with the streetscape, the study defined how those changes in the components affect emotional factors of the pedestrians. In order to achieve the research goal, the study made changes in D/H ratio of the street structural components as well as the roadside trees. In terms of the questionnaire method, the study used the SD scale, and proceeded with its investigation through the frequency analysis, the principal component analysis (the factor analysis) and the structural equation model. RESULTS : According to the results from the factor analysis and the regression analysis, of those three factors, such as the openness, the comfortable sensation and the safety, the openness followed by the comfortable sensation and the safety was determined to have the most positive influence on the total satisfaction. The structural model analysis reported that the D/H and the structural components of the roadside trees and planting have a positive effect on the emotional image, and this emotional image also appeared to be positively related to the total satisfaction. CONCLUSIONS : This study looked into how the changes in the street structural components of the culture and arts street in Daeheungdong would affect the satisfaction with the streetscape, and finally confirmed that the D/H and the planting are what would have a positive effect on this satisfaction. What has been learned from this study will be the basic data to figure out how to promote and improve the culture and arts street in Daeheung-dong as this data will also help designing and developing of those specialized streets in other regions.

PURPOSES: This study devotes its energies to estimate greenhouse gas emissions for types of horizontal highway designs. METHODS: This paper suggested two types of road scenarios, scenario 1 is made by the lack of road design consistency. Beside scenario 1, scenario 2 is made by good road design. For comparisons of greenhouse gas emissions, driving simulator was used. RESULTS: Emission rates of road scenario 1 are 1.4 times higher than scenario 2 in the driving simulator. CONCLUSIONS : This study may have important implications for contributing to the application of road alignment technology for reduction of greenhouse gases as quantifying the correlations between greenhouse emissions and various road alignments. Consequently, this study will help road designers determine which roads are best alternatives in the process of choosing the roads in the future in terms of environmental benefits.

PURPOSES: An conventional method for electric power generation is converting thermal energy into mechanical energy then to electrical energy. Due to environmental issues such as global warming related with CO2 emission etc., were the limiting factor for the energy resources which resulting in extensive research and novel technologies are required to generate electric power. Thermal energy harvesting using thermoelectric generator is one of energy harvesting technologies due to diverse advantages for new green technology. This paper presents a possibility of application of the thermoelectric generator、s application in the direct exchange of waste solar energy into electrical power in road space. METHODS : To measure generated electric power of the thermoelectric generator, data logger was adopted as function of experimental factors such as using cooling sink, connection methods etc. Also, the thermoelectric generator、s behavior at low ambient temperature was investigated as measurement of output voltage vs. elapsed times. RESULTS: A few temperature difference between top an bottom of the thermoelectric generator is generated electric voltage. Components of an electrical circuit can be connected in various ways. The two simplest of these are called series and parallel and occur so open. Series shows slightly better performance in this study. An installation of cooling sink in the thermoelectric generator system was enhanced the output of power voltage. CONCLUSIONS : In this paper, a basic concepts of thermoelectric power generation is presented and applications of the thermoelectric generator to waste solar energy in road is estimated for green energy harvesting technology. The possibility of usage of thermoelectric technology for road facilities was found under the ambient thermal gradient between two surfaces of the thermoelectric module. An experiment results provide a testimony of the feasibility of the proposed environmental energy harvesting technology on the road facilities.

PURPOSES: The purpose of this study is to verify the causes of surface scaling at L-shoulder concrete structure. METHODS : From the literature reviews, mechanisms of frost damage were studied and material properties including strength, air void, spacing factor and scaling resistance of L-shoulder concrete structure were analyzed using core specimens taken by real fields. RESULTS : The spacing factor of air void has relatively high correlation of surface conditions : lower spacing factor at good surfacing condition and vice versa. If the compressive strength is high, even thought spacing factor does not reach the threshold value of reasonable durability, the surface scaling resistance shows higher value. Based on these test results, the compressive strength also provide positive effect on the surface scaling resistance. CONCLUSIONS: The main causes of surface scaling of L-shoulder could be summarized as unsuitable aid void amount and poor quality of air void structure. Secondly, although the compressive strength is not the governing factor of durability, but it shows the positive effect on the surface scaling resistance.

The existing metal getters are invariably covered with thin oxide layers in air and the native oxide layer must be dissolved into the getter materials for activation. However, high temperature is needed for the activation, which leads to unavoidable deleterious effects on the devices. Therefore, to improve the device efficiency and gas-adsorption properties of the device, it is essential to synthesize the getter with a method that does not require a thermal activation temperature. In this study, getter material was synthesized using palladium oxide (PdOx) which can adsorb H2 gas. To enhance the efficiency of the hydrogen and moisture absorption, a porous layer with a large specific area was fabricated by an etching process and used as supporting substrates. It was confirmed that the moisture-absorption performance of the SiO2/Si was characterized by water vapor volume with relative humidity. The gas-adsorption properties occurred in the absence of the activation process.

본 논문은 선교적 교회의 구조와 실천을 통합적 관점에서 다룬다. 선교적 교회는 모이는 교회와 흩어지는 교회의 두 양상이 상보적인 관계 안에서 균형을 이룰 때 제대로 작동된다. 모이는 교회는 공동체 내에서 이루어지는 네 가지 주요 활동들 곧 예배, 성례전, 교육, 친교는 선교적 교회의 내적 역동성을 확보해주는 중요한 개념이다. 또한 선교적 교회가 진정한 ‘선교적’ 교회가 되기 위해서는 구조적인 측면에서 조직적 차원과 개인적 차원 두 가지 양상을 모두 필요로 한다. 선교적 교회가 행하는 조직적 선교는 주로 프로그램과 사업 또는 행사 형태로 진행되는 경향을 보이지만 동원성과 효율성의 관점에서 매우 중요한 선교의 차원을 형성한다. 그러나 지금까지 대부분의 교회는 조직적 차원의 선교에 주력하면서 일상생활과 사회적 세계 안에서 개인적으로 행하는 선교적 차원을 무시했다는 점이 지적되어야 한다. 이와 같은 개인적 차원의 선교는 각 개인이 자신의 삶의 세계에서 선교사로서의 의식을 가지고 살아가는 것을 말하는데, 한국교회에 가장 부족한 부분이라고 말할 수 있다. 선교적 교회의 실천은 구체적으로 존재와 행위와 말을 통해서 이루어진다. 이 원리는 집단적 차원과 개인적 차원 모두에 해당하는 것으로서 세 가지 요소들은 온전한 선교를 위해 모두 통합적으로 고려되어야 한다. 존재에 의해 선교는 선교적 공동체가 세속적인 공동체들과 구별된 가치관과 삶의 방식을 가지고 살아간다는 사실에 근거한다. 행위와 말에 의한 선교는 존재에 의한 선교로부터 나오며, 그것들은 하나님의 선교적 백성이 처한 상황에 따라 적절하게 선택되어야 한다.

Considering a rigorously fluid-structure interaction, a method for an earthquake response analysis of a floating offshore structure subjected to vertical ground motion from a seaquake is developed. Mass, damping, stiffness, and hydrostatic stiffness matrices of the floating offshore structure are obtained from a finite-element model. The sea water is assumed to be a compressible, nonviscous, ideal fluid. Hydrodynamic pressure, which is applied to the structure, from the sea water is assessed using its finite elements and transmitting boundary. Considering the fluid-structure interaction, added mass and force from the hydrodynamic pressure is obtained, which will be combined with the numerical model for the structure. Hydrodynamic pressure in a free field subjected to vertical ground motion and due to harmonic vibration of a floating massless rigid circular plate are calculated and compared with analytical solutions for verification. Using the developed method, the earthquake responses of a floating offshore structure subjected to a vertical ground motion from the seaquake is obtained. It is concluded that the earthquake responses of a floating offshore structure to vertical ground motion is severely influenced by the compressibility of sea water.

In order to increase the seismic safety of nuclear power plant (NPP) structures in high seismicity regions, seismic isolation techniques can be adapted to NPP structures. In this paper, the applicability of multi-step analysis of seismically isolated NPP containment structures with lead-rubber bearings (LRB) is evaluated. The floor response spectrum of NPP containment structures with equivalent linear LRB and nonlinear LRB are compared. In addition, the force-displacement relationships for equivalent linear LRB and nonlinear LRB are compared.

우리나라 국가물류체계에서 타 운송수단 못지않게 연안화물운송의 기능과 역할은 중요하다고 할 수 있다 특히 세계적으로 급변하는 해운환경속에서 우 리나라 연안해운의 축을 담당하는 한국해운조합은 세월호 사고의 여파속에서 연안해운의 지속적 발전과 안전확보라는 두 가지 요구를 충족시켜야하는 시점 에 있다 이와 관련하여 조합원의 권익보호를 위하여 설립된 민간단체인 한국해운조 합에 대해 공익성을 강화하는 것은 타당하지 않다라는 견해도 있지만 특정 업 무 영역에 대하여 정부위탁사업을 수행하는 등 일정부분 공적기능을 수행하고 있는 현실을 감안하면 보다 합리적이고 투명한 지배구조를 갖출 필요성이 있어 보인다 이에 이 논문에서는 공익성을 포함한 한국해운조합의 업무영역과 현재의 지 배구조 등에 대하여 살펴보고 보다 합리적이고 투명하면서 특정분야에 대한 공익성을 확보하기 위해 의사결정구조를 포함한 지배구조의 개선안을 제안하 고자 한다

백제는 한강유역에서 건국하고 금강유역에서 멸망했다. 왕이 살던 곳을 기준으로 구분하면, 한강유역에서는 慰禮城과 漢城, 금강유역에서는 熊津城과 泗沘都城으로 나뉜다. 흔히 위례성을 백제 전기의 왕성, 한성을 백제 전기의 도성․왕도라고 부른다. 기록에 따르면 한성은 北城과 南城 2개의 성으로 이루어졌는데, 북성은 기존의 위례성을 재편한 것이며 남성은 새로 쌓은 산성으로서 유사시를 대비한 군사적 목적의 왕성이다. 남성은 한산 자락에 쌓았으므로 漢山城으로도 불렸다. 북성은 지금의 풍납토성, 남성은 지금의 몽촌토성에 비정된다. 백제 왕도의 방위체계에 대해서는 한강유역의 고대 성곽을 유기적으로 연결하는 방식을 흔히 사용하지만, 유적 편년을 충분히 검토하지 못한 상태에서 지도상으로만 상정한 것이어서 한계가 있다. 백제 한성도읍기의 방위체계는 왕성 부근에 촘촘한 그물망 형태로 산성을 배치하는 것이 아니라 오히려 변경 쪽에 치중했다. 왕도는 한강을 통제하면서 유사시에 옹성할 수 있는 군사적 목적의 배후산성을 대비해놓는 정도였으며, 군사요새는 한강보다 임진강․예성강 등 고구려와 전투를 자주 벌인 북방지역에 훨씬 더 많이 축조하였다. 고대의 방위체계 연구에는 유적의 정확한 편년에 기초하여 역사적 배경을 귀납적이며 거시적으로 통찰하려는 자세가 필요하다.