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Articles 31 - 60 of 87
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Technology Forecasting Via Published Patent Applications And Patent Grants, Dar-Zen Chen, Chang-Pin Lin, Mu-Hsuan Huang, Yi-Tung Chan
Technology Forecasting Via Published Patent Applications And Patent Grants, Dar-Zen Chen, Chang-Pin Lin, Mu-Hsuan Huang, Yi-Tung Chan
Journal of Marine Science and Technology
The objective of this research is to study and establish the relationships between published patent applications and patent grants for exploring the technology development trend on a specific technology since more and more patents have their applications published before they are granted. Two modeling algorithms based on the patent grant/publish ratio as well as one long-term modeling algorithm based on the average publish-to-grant lag, were developed accordingly. The relationships between patent grants and published patent applications were constructed through two case studies on Magnetic Random Access Memory and Organic Light-Emitting Diode technologies and corresponding forecasts were then conducted. Comparing to …
Applying A Two-Step Maximum Likelihood Method To Examine The Deposit Insurance Program Of Taiwan, David K. Wang, Chun-Chou Wu, Heng-Chih Chou
Applying A Two-Step Maximum Likelihood Method To Examine The Deposit Insurance Program Of Taiwan, David K. Wang, Chun-Chou Wu, Heng-Chih Chou
Journal of Marine Science and Technology
This paper examines the deposit insurance program of Taiwan. We adopt Duan et al. [4]’s deposit insurance pricing model, and estimate the deposit insurance premium by the Duan and Simonato two-step maximum likelihood method [5]. Our results show that the maximum likelihood estimates for the deposit insurance premium are considerably higher than the official rates currently charged by the Central Deposit Insurance Corporation (CDIC), the deposit insuring agency of Taiwan, indicating that the CDIC deposit insurance program appears to hand out a substantial subsidy to the banks in Taiwan. Our results also show that the CDIC in fact grants too …
Experimental Study Of The Electrochromic Properties Of Wo3 Thin Films Derived By Electrochemical Method, Chin-Guo Kuo, Chih-Yin Chou, Ya-Chieh Tung, Jung-Hsuan Chen
Experimental Study Of The Electrochromic Properties Of Wo3 Thin Films Derived By Electrochemical Method, Chin-Guo Kuo, Chih-Yin Chou, Ya-Chieh Tung, Jung-Hsuan Chen
Journal of Marine Science and Technology
This study aimed at the effect of electrolyte filled volume on transmittance and coloration efficiency of the electrochromic device. The device mainly consisted of ITO, WO3 template and electrolyte (PC + LiClO4). The experimental results showed the transmittance of visible light reduced with increasing the electrolyte filled volume. In addition, when the electrolyte filled volume was 100 mm3 , the coloration efficiency could reach the maximum CE, 15.2 cm2 /C.
Fragmentation And Characteristics Of Recombinant Endochitinase Expressed In Escherichia Coli, Wei-Ming Chen, Gen-Hung Chen, Shann-Tzong Jiang
Fragmentation And Characteristics Of Recombinant Endochitinase Expressed In Escherichia Coli, Wei-Ming Chen, Gen-Hung Chen, Shann-Tzong Jiang
Journal of Marine Science and Technology
A recombinant endochitinase fused with hexahistidine (rEC-H) was expressed and characterized. After Ni affinity chromatography, the recovery, purification-fold and specific activity of rEC-H were 88.8%, 13.4 and 142.1 U/mg, respectively. The purified rEC-H had optimal pH and temperature at pH 7.5 and 60°C, respectively and was stable at pH 4.0-9.0 and
Optimum Design Of Mufflers Hybridized With One-Connected Curved Tube Using The Boundary Element Method, Neural Networks, And The Genetic Algorithm, Ying-Chun Chang, Min-Chie Chiu, Ching-Chung Hsieh
Optimum Design Of Mufflers Hybridized With One-Connected Curved Tube Using The Boundary Element Method, Neural Networks, And The Genetic Algorithm, Ying-Chun Chang, Min-Chie Chiu, Ching-Chung Hsieh
Journal of Marine Science and Technology
Recently, research on new techniques for an economical muffler, which is hybridized with a single-connected curved tube, has been applied in the industrial field. Most researchers have explored noise reduction effects based on the transfer matrix method and the stiffness matrix method. However, the maximum noise reduction of a silencer within a constrained space, which frequently occurs in engineering problems, has been neglected. Therefore, the optimum design of mufflers becomes an essential issue. In this paper the shape optimization of a one-connected tube muffler with a fixed length is examined. In order to speed up the optimization assessment, a simplified …
Study On The Seismic Behavior Of Self-Anchored Suspension Bridges, Wen-Liang Qiu, Chang-Huan Kou, Chin-Sheng Kao, Shih-Wei Ma, Jiun Yang
Study On The Seismic Behavior Of Self-Anchored Suspension Bridges, Wen-Liang Qiu, Chang-Huan Kou, Chin-Sheng Kao, Shih-Wei Ma, Jiun Yang
Journal of Marine Science and Technology
The suspension bridge has a beautiful structural shape and an excellent spanning ability. The self-anchored suspension bridge has its main cables anchored directly on the two ends of the main girders, saving construction costs and time incurred during the anchorage construction of an earth-anchored suspension bridge. However, the feasibility of a self-anchored suspension bridge in a strong earthquake zone and the use of dampers to reduce seismic responses have yet to be fully investigated. Using the Yellow-River Road Bridge in Mainland as an example, this study sets out to analyze and investigate a series of seismic responses of a self-anchored …
An Arc Code To Predict The Thermal Crack Of Welded Sample, Je-Ee Ho
An Arc Code To Predict The Thermal Crack Of Welded Sample, Je-Ee Ho
Journal of Marine Science and Technology
In this study, a numerical code with enthalpy method in upwind scheme is proposed to estimate the distribution of thermal stress in the molten pool, which is primarily determined by the type of the input power and travel speed of heating source. To predict the cracker deficit inside the workpiece, a simulated program satisfying the diagonal domination and Scarborough criterion provides a stable iteration. Meanwhile, an experimental performance, operated by robot arm “DR-400” to provide a steady and continuous arc welding, was also conducted to verify the simulated result. By surveying the consistence of molten pool bounded by contrast shade …
Rust-Expansion-Crack Service Life Prediction Of Existing Reinforced Concrete Bridge/Viaduct Using Time-Dependent Reliability Analysis, Ming-Te Liang, Jiang-Jhy Chang, Han-Tung Chang, Chi-Jang Yeh
Rust-Expansion-Crack Service Life Prediction Of Existing Reinforced Concrete Bridge/Viaduct Using Time-Dependent Reliability Analysis, Ming-Te Liang, Jiang-Jhy Chang, Han-Tung Chang, Chi-Jang Yeh
Journal of Marine Science and Technology
It is necessary to develop a calculation method to help in the making of feasible, reliable, and serviceable predictions for the service lives of bridge or viaduct structures. This article presents the basis for doing rust-expansion-crack service life predictions for existing reinforced concrete (RC) bridges and viaducts in chloride-laden environments based on timedependant reliability modeling due to the corrosion of steel in concrete. The corrosion process has three stages, the initiation (diffusion or carbonation) time (ti = tc), the depassivation time (tp), and the propagation (corrosion) time (tcorr). The rustexpansion-crack service lives (tcr) of existing RC bridges or viaducts can …
Fuzzy Statistical Refinement For The Forecasting Of Tenders For Roadway Construction, Jeng-Wen Lin, Cheng-Wu Chen, Ting-Chang Hsu
Fuzzy Statistical Refinement For The Forecasting Of Tenders For Roadway Construction, Jeng-Wen Lin, Cheng-Wu Chen, Ting-Chang Hsu
Journal of Marine Science and Technology
Due to market competition, construction companies often place low bids when tenders are invited for domestic public construction projects. Over-competition can lead to vicious price wars to win a tender, which can in turn seriously affect the quality of construction. This study aims to establish an accurate Taiwan based model for the forecasting of the tendered price for roadway construction. This model is designed to assist the public sector to determine what would be a reasonable reserve price or award price. In order to ensure accurate predictions, a data classification system is established using fuzzy set theory. For each category …
Studies Of The Effect Of Diffusion-Induced Chloride Binding On Chlorination Life Predictions For Existing Reinforced Concrete Bridges, Ming-Te Liang, Jiang-Jhy Chang, Tung-Wei Yu
Studies Of The Effect Of Diffusion-Induced Chloride Binding On Chlorination Life Predictions For Existing Reinforced Concrete Bridges, Ming-Te Liang, Jiang-Jhy Chang, Tung-Wei Yu
Journal of Marine Science and Technology
The chloride ions diffusion is one of important factors of corrosion of reinforced concrete (RC) structures. The total chloride concentration penetrated into concrete can be expressed as the sum of bound and free chloride concentrations. The principal purpose of this paper is to study the chlorination life prediction of existing RC bridges due to chloride binding effect. The investigation method is that the no binding, linear binding, Langmuir and Freundlich adsorption isotherms are substituted into the analytical solutions of linear (diffusivity D = constant) and non-linear (D ≠ constant) diffusion equations associated with initial and boundary conditions, respectively. The chlorination …
Safety Stock Estimation Of Unit Load Devices For International Airline Operations, Hua-An Lu, Chien-Yi Chen
Safety Stock Estimation Of Unit Load Devices For International Airline Operations, Hua-An Lu, Chien-Yi Chen
Journal of Marine Science and Technology
Unit load devices (ULDs) are used to load air cargo and passengers’ checked baggage for wide-bodied aircraft operations. Since ULDs are reusable at the destination, airlines can invest in an appropriate fleet size for their requirements. The estimation of safety stock levels for every operating airport is a premeditated task because airlines must prepare enough devices for the outbound consignments of each flight. The variance of the number of used devices for each arrival and departure flight will influence the stock level of an airport. For scheduled international services, this study proposes an analytic method based on a cyclically time-sequenced …
A Manifold-Based Exponentially Convergent Algorithm For Solving Non-Linear Partial Differential Equations, Chein-Shan Liu
A Manifold-Based Exponentially Convergent Algorithm For Solving Non-Linear Partial Differential Equations, Chein-Shan Liu
Journal of Marine Science and Technology
For solving a non-linear system of algebraic equations of the type: Fi(xj) = 0, i, j = 1, …, n, a Newton-like algorithm is still the most popular one; however, it had some drawbacks as being locally convergent, sensitive to initial guess, and time consumption in finding the inversion of the Jacobian matrix ∂Fi /∂xj. Based-on a manifold defined in the space of (xi, t) we can derive a system of non-linear Ordinary Differential Equations (ODEs) in terms of the fictitious time-like variable t, and the residual error is exponentially decreased to zero along the path of x(t) by solving …
A Proposal On Standard Rudder Device Design Procedure By Investigation Of Rudder Design Process At Major Korean Shipyards, Hyun-Jun Kim, Sang-Hyun Kim, Jung-Keun Oh, Dae-Won Seo
A Proposal On Standard Rudder Device Design Procedure By Investigation Of Rudder Design Process At Major Korean Shipyards, Hyun-Jun Kim, Sang-Hyun Kim, Jung-Keun Oh, Dae-Won Seo
Journal of Marine Science and Technology
Recently, a very large vessel’s maneuvering performance, rudder performance and rudder design’s importance are considered to be an important subject. However, there have been few studies on the design process of rudder device before. The aim of this paper is to investigate a design process of rudder device and to propose a generalized design process of rudder device. Firstly, we investigated the rudder device design process of Korean major shipyards. And the differences of a torque calculation method, rudder section design, maneuvering performance examination method, etc. were analyzed theoretically. Secondly, the design process of rudder device was divided into concept …
Design Of Planning Level Ship Product Model For Ship Initial Design, Sungchul Shin, Soon-Sup Lee, Jong-Kap Lee, Kyung-Ho Lee
Design Of Planning Level Ship Product Model For Ship Initial Design, Sungchul Shin, Soon-Sup Lee, Jong-Kap Lee, Kyung-Ho Lee
Journal of Marine Science and Technology
This paper introduces a design of planning level ship product model (called SPPM hereinafter) based on ISO 10303 Standard for The Exchange of Product Model data (STEP). For the design of this model, the information modeling methodologies such as Integration Definition (IDEF) methods and Unified Modeling Language (UML) were reviewed, and a hybrid method was established. By using this method, ship initial design process was analyzed, and STEP-based information model and class libraries for SPPM were defined. For the data structure of this model, the shipbuilding Application Protocols (AP215, AP216 and Ship Common Model) of STEP were investigated and utilized …
The Freak Wave Potential Of Tyhoon Swell, Nai-Kuang Liang
The Freak Wave Potential Of Tyhoon Swell, Nai-Kuang Liang
Journal of Marine Science and Technology
Freak waves are so-called rogue waves, which are considered nearly impossible according to traditional ocean wave theory and sometimes cause coastal and sea wrecks. There are already some hypotheses that explain freak wave occurrence. However, the moving wind system generates swells which can be enhanced by swell energy flux accumulation. A newlydefined parameter “Freak Wave Potential Index” Φ for the typhoon swell can manifest the possibility for a freak wave occurrence. This index can be correctly estimated, because actual typhoon datum is already known. The “Freak Wave Potential Index” concept may also be used for other moving wind systems.
Design And Application Of Inter-Satellite Link In Weather Observation Constellation, Jeng-Shing Chern, Zuu-Chang Hong, Tsai-Lun Chien, Tzu-You Chen, Ji-Chien Dai
Design And Application Of Inter-Satellite Link In Weather Observation Constellation, Jeng-Shing Chern, Zuu-Chang Hong, Tsai-Lun Chien, Tzu-You Chen, Ji-Chien Dai
Journal of Marine Science and Technology
This paper presents the design and application analysis of the inter-satellite link technique in weather observation satellite constellation. A Walker parameter 18/18/4 satellite constellation with circular orbit at 837 km altitude and 60 degree inclination has been considered. The purposes are to take the weather cloud images of the area from 60 to 180 degree in eastern longitude and 0 to 60 degree in northern latitude, and to transfer the images back to Taiwan ground station as soon as possible. The STK [1] simulation software has been used in analyzing the effects of Doppler phenomenon, azimuth angle, elevation angle and …
Effective Asr Inhibiting Length And Applied Electrical Field Under Accelerated Lithium Migration Technique, Wei-Chien Wang, Chih-Chien Liu, Chau Lee
Effective Asr Inhibiting Length And Applied Electrical Field Under Accelerated Lithium Migration Technique, Wei-Chien Wang, Chih-Chien Liu, Chau Lee
Journal of Marine Science and Technology
This study investigates the effective concrete length and electric field strength during Accelerated Lithium Migration Technique (ALMT) application for the inhibition of the alkali-silica reaction (ASR). Concrete specimens measuring 10 cm in diameter and 5, 7, 9, 11, 14, 17, 20 and 23 cm in length are fabricated. Specimens with 5, 7, and 9 cm in length are applied 9 A/m2 constant current density, and the rest specimens are applied 60 V constant voltage. After the ALMT process, the specimen is cut every 0.5 cm and analyzed its cation content. Experimental results shows that if the aim of ASR inhibition …
Impact Abrasion Of Hydraulic Structures Concrete, Yu-Wen Liu, Shi-Wei Cho, Tsao-Hua Hsu
Impact Abrasion Of Hydraulic Structures Concrete, Yu-Wen Liu, Shi-Wei Cho, Tsao-Hua Hsu
Journal of Marine Science and Technology
Most of the abrasion damage is caused by the action of water-borne particles (silt, sand, gravel, and other solid) impacting and rolling against the concrete surface during hydraulic structure operation. In this paper solid-particle abrasion of concrete containing slag was studied. Experiments included use of river sand abrade of mean diameter ~ 0.6, 1.2, 2.5 and 5 mm, and sand content was 110, 230 and 340 kg per 1 m3 of water, impacting at 30°, 45° and 90° to the concrete surface. And the waterborne sand flow impact test method was used. Test results show that the abrasion rate to …
Prediction Model Of Air-Borne Salt Distribution In The Coastal Region Of Northern Taiwan, Yu-Sheng Chen, Hui-Jen Chiu, Yi-Wen Chan, Yung-Chang Chang, Chung-Chia Yang
Prediction Model Of Air-Borne Salt Distribution In The Coastal Region Of Northern Taiwan, Yu-Sheng Chen, Hui-Jen Chiu, Yi-Wen Chan, Yung-Chang Chang, Chung-Chia Yang
Journal of Marine Science and Technology
Taiwan is located in subtropical region, where temperature and humidity are relatively high all year round. Besides, the island is surrounded by ocean that the air-borne salt (ABS) attack is one of the major concerns for concrete structures. In this paper, a prediction model for the distribution of air-borne salt in the coastal region of northern Taiwan is proposed based on the result of ABS measurement at 38 sites near a period of four years. The ABS content was calculated monthly based on the salt concentration, water amount, time, and area of entrance. The monthly measured ABS of the entire …
Using Mercury Intrusion Porosimetry To Study The Interfacial Properties Of Cement-Based Materials, Shih-Wei Cho
Using Mercury Intrusion Porosimetry To Study The Interfacial Properties Of Cement-Based Materials, Shih-Wei Cho
Journal of Marine Science and Technology
Cement-based material is a typical porous composite material. Pore structures and interfacial properties of cementbased materials are influenced properties of ion transport behavior and durability. This study determines pore structure by employing mercury intrusion porosimetry (MIP), with mortar specimens manufactured with three different watercement (w/c) ratios and five volume proportions of fine aggregate to investigate interfacial properties. The experimental results show that total mercury intrusion decreases with an increase in sand volume proportion when comparing the same w/c ratio. The calculated mercury intrusion of interfacial transition zone increases with w/c and the volume proportion of fine aggregate.
Mechanical Properties Of Recycled Aggregate Concrete With Deformed Steel Re-Bar, Yongjae Kim, Jongsung Sim, Cheolwoo Park
Mechanical Properties Of Recycled Aggregate Concrete With Deformed Steel Re-Bar, Yongjae Kim, Jongsung Sim, Cheolwoo Park
Journal of Marine Science and Technology
This study investigates fundamental properties of the recycled aggregate which was produced through recent hi-technique of recycling. In addition, the mechanical properties of the concrete that was made by the recycled aggregate were compared to the concrete made of natural aggregate. The primary objective of this study was to characterize the concrete-rebar bonding properties of the recycled aggregate concrete. The recycled aggregate concrete showed about 18% decreased bond strength as compared to the natural aggregate concrete. The current prediction equation of bond strength suggested by the design specification does not consider this decreased bond strength by the use of the …
The Relationship Between Migration Time In Acmt And Ponding Time In Ponding Test For Cementitious Materials, Chung-Chia Yang, Yu-Ming Tsai, Kuo-Cheng Yang
The Relationship Between Migration Time In Acmt And Ponding Time In Ponding Test For Cementitious Materials, Chung-Chia Yang, Yu-Ming Tsai, Kuo-Cheng Yang
Journal of Marine Science and Technology
The objective of this study is to investigate the relationship between the diffusion behaviors of chloride ions and the migration of chloride ions in the cementitious materials. Different kinds of mortars with different binder combination (fly ash, slag and fly ash plus slag) and w/b ratios (w/b = 0.35, 0.45, 0.55, and 0.65) were used. In this study, the diffusion test and the migration test were carried out with the ponding test (AASHTO T259) and the accelerated chloride migration test (ACMT), respectively. The chloride profiles were obtained under different ponding time with ponding test and different migration time with ACMT. …
The Study Of Chloride Ion Transport Behavior Of Mortar Under Different Storing Environment Temperatures, Shih-Han Weng, Chung-Chia Yang, Shih-Wei Cho, Kuo-Cheng Yang
The Study Of Chloride Ion Transport Behavior Of Mortar Under Different Storing Environment Temperatures, Shih-Han Weng, Chung-Chia Yang, Shih-Wei Cho, Kuo-Cheng Yang
Journal of Marine Science and Technology
This study presents the chloride ion transport behavior of mortar from accelerated chloride migration test (ACMT). The water/cement ratio of mortars is 0.45, and the five volume fractions of fine aggregates (0%, 15%, 30%, 50% and 60%) were evaluated. After stored under different environment temperatures (25°C, 40°C, 60°Cand 80°C), the chloride ion passing through specimens was carried out with ACMT. From the Nernest-Planck equation and modified Fick’s second law, test data could be calculate the chloride migration coefficient of non-steady-state and steady-state. For mortar structure, dilution and tortuosity effects are positive effect to resist the penetration of Chloride ion. On …
Effect Of Water Soluble Polymer And Fiber On The Early-Age Shrinkage Cracking Of Cementitious Composites, Shih-Tang Lin, Ran Huang, Tsai-Lung Weng
Effect Of Water Soluble Polymer And Fiber On The Early-Age Shrinkage Cracking Of Cementitious Composites, Shih-Tang Lin, Ran Huang, Tsai-Lung Weng
Journal of Marine Science and Technology
Both polymeric fiber and water soluble polymer (WSP) have been reported effective in reducing early-age shrinkage cracking. The synergistic effect of cellulose based WSP and fiber on reducing early-age shrinkage cracking of cementitious composite exposed to a constant evaporation rate of 1 kg/(h.m2) environment was investigated in this paper. A fixed ratio of WSP was employed in the poly-acrylic fiber reinforced cementitious composites with various fiber content and aspect ratios. Results indicate that the addition of polymeric fibers reduced plastic shrinkage cracking, such as the total crack area, the average crack width and cracks wider than 1.5 mm. Further reductions …
Performance-Based Plastic Design And Energy-Based Evaluation Of Seismic Resistant Rc Moment Frame, Wen-Cheng Liao, Subhash C. Goel
Performance-Based Plastic Design And Energy-Based Evaluation Of Seismic Resistant Rc Moment Frame, Wen-Cheng Liao, Subhash C. Goel
Journal of Marine Science and Technology
This paper presents first time application of the Performance-Based Plastic Design (PBPD) approach to seismic resistant reinforced concrete special moment frames (RC SMF). Four baseline RC SMF (4, 8, 12 and 20-story) as used in the FEMA P695 were selected for this study. Those frames were redesigned by the PBPD approach. The baseline code designed frames and the PBPD frames were subjected to extensive inelastic pushover and time-history analyses. It turns out that the work-energy equation in PBPD to determine design base shear can also be used to estimate seismic demands, herein called the energy spectrum method. In summary, this …
Effect Of Alkaline Solutions On Engineering Properties Of Alkali-Activated Ggbfs Paste, Tzong-Ruey Yang, Ta-Peng Chang, Bo-Tsun Chen, Jeng-Ywan Shih, Wei-Lun Lin
Effect Of Alkaline Solutions On Engineering Properties Of Alkali-Activated Ggbfs Paste, Tzong-Ruey Yang, Ta-Peng Chang, Bo-Tsun Chen, Jeng-Ywan Shih, Wei-Lun Lin
Journal of Marine Science and Technology
In this study, two kinds of alkaline solutions, sodium hydroxide (NaOH) and sodium silicate (Na2SiO3), with three dosages of 0.5, 1.0 and 1.5% by weight were used to produce the alkali-activated ground granulated blast furnace slag (GGBFS) paste at three different liquid-solid ratios by weight of 0.45, 0.5 and 0.55. Most engineering properties of the paste were examined at age of 3, 7, 14, 28 and 56 days. Experimental results show that a mixed alkaline solution of sodium hydroxide and sodium silicate is necessary to produce an alkaliactivated GGBFS paste with adequate workability and strength. Both the liquid-solid ratio and …
Effect Of Ground Granulated Blast Furnace Slag On Mechanical Behavior Of Pva-Ecc, Ing Lim, Jenn-Chuan Chern, Tony Liu, Yin-Wen Chan
Effect Of Ground Granulated Blast Furnace Slag On Mechanical Behavior Of Pva-Ecc, Ing Lim, Jenn-Chuan Chern, Tony Liu, Yin-Wen Chan
Journal of Marine Science and Technology
As the most popular construction material, concrete has many advantages compared to other materials. However, its brittle nature causes cracking and results in many deterioration problems and failures in infrastructures. Considering the issue of sustainability, researchers around the world have conducted numerous studies to develop concrete that has better performances, higher durability, longer life span, and less damaging effects to nature. To obtain such characteristics, researchers not only focus on strength enhancement, but also ductility and toughness. This paper examines the effect of using ground granulated blast furnace slag as partial cement replacement in producing engineered cementitious composite (ECC), a …
A Study Of Statistical Models Application For Mixture Of High-Flowing Concrete, Ming-Chih Li, Yu-Sheng Chen, Yin-Wen Chan, Vihn Long Hoang
A Study Of Statistical Models Application For Mixture Of High-Flowing Concrete, Ming-Chih Li, Yu-Sheng Chen, Yin-Wen Chan, Vihn Long Hoang
Journal of Marine Science and Technology
High flowing concrete (HFC) is defined as a concrete that exhibits a high deformability and a good resistance to segregation. The grade of workability for HFC is concrete slump flow that between 50 to 70 cm. In the research, 21statistically balanced concrete mixtures were investigated by statistical models, and discussed further the workability, strength and durability properties of concrete, which are responded by granulated ground blastfurnace slag (GGBS), Fly ash, waterbinder ratio (w/b) and superplasticizer (sp). The Box-Wilson central composite design (CCD) method is used in this study. The total binder content is 375 kg/m3 , and four independent variables …
Analysis Of Influential Factors And Association Rules For Bridge Deck Deterioration With Utilization Of National Bridge Inventory, Rong Yau Huang, Ping Fu Chen
Analysis Of Influential Factors And Association Rules For Bridge Deck Deterioration With Utilization Of National Bridge Inventory, Rong Yau Huang, Ping Fu Chen
Journal of Marine Science and Technology
Bridge is the hub of the roads and plays a crucial role in transportation. In recent years, the age of most bridges in Taiwan has gotten old gradually; as a result, the bridges deteriorate and need to be fixed and maintained. Nevertheless, it is not easy to predict the timing of bridge deterioration, and such situation has become one of the important issues in introducing the concept of preventive maintenance. In fact, in order to control the condition of bridge deterioration, many countries have set up bridge management system and regulated methods and mechanism of inspection. The record of bridge …
Design Optimal Control Of Ship Maneuver Patterns For Collision Avoidance: A Review, Chia-Hung Shih, Po-Hsuan Huang, Saburo Yamamura, Chen-Yuan Chen
Design Optimal Control Of Ship Maneuver Patterns For Collision Avoidance: A Review, Chia-Hung Shih, Po-Hsuan Huang, Saburo Yamamura, Chen-Yuan Chen
Journal of Marine Science and Technology
Although there have been lots studies about vehicular maneuvers on land or sea, maneuvers within a small area that require direction changes have rarely been discussed. Many reports on the arrival or departure of ships from ports have revealed more about what are safe and effective turning maneuvers within a narrow area. Convenient navigation systems for ship maneuvering should allow quick avoidance of obstacle to find the shortest distance in the whole seaway is important. This study proposes a review model that will satisfy optimal turning maneuvering anywhere and be applicable to any type of ship. However, the water-based environment …