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2019

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Articles 7591 - 7620 of 10505

Full-Text Articles in Engineering

Theoretical Analysis Of A Volume Holographic Lens Using Matlab, Sanjay Keshri, Kevin Murphy, Izabela Naydenova, Suzanne Martin Jan 2019

Theoretical Analysis Of A Volume Holographic Lens Using Matlab, Sanjay Keshri, Kevin Murphy, Izabela Naydenova, Suzanne Martin

Conference Papers

Volume holographic lenses have great potential for different types of applications requiring light redirection and beam shaping such as solar light collection and LED light management. For lighting applications using LEDs, it is essential to make a highly efficient optical element to be placed in front of the LED in order to decrease energy losses. For that reason, a careful theoretical analysis of the properties and operation regime of the lens must be carried out at the design stage. The characteristics of focusing Holographic Optical Elements (HOE) depend on many factors including their thickness, spatial frequency, the angular range of …

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Calculation Methods Of Radon-222 Radiological Activity For Norm Plant With Ventilation, Pedro M. Dieguez-Elizondo, Paul G. O'Donohoe, Tomas Gil-Lopez, Juan Castejon-Navas, Miguel A. Gálvez-Huerta Jan 2019

Calculation Methods Of Radon-222 Radiological Activity For Norm Plant With Ventilation, Pedro M. Dieguez-Elizondo, Paul G. O'Donohoe, Tomas Gil-Lopez, Juan Castejon-Navas, Miguel A. Gálvez-Huerta

Articles

A procedure is proposed to determine the radiological activity of air present in the working area of a NORM (Naturally-Occurring Radioactive Materials) plant. This NORM plant is located in the United Arab Emirates and is dedicated to the recycling of material and equipment used in oil extraction facilities. Substantial quantities of NORM waste will be present inside the enclosed plant facilities and will exhale significant amounts of Radon-222 into the working environment. The continued inhalation of this gas and its progeny has been shown to cause lung cancer. In order to reduce the concentration level of the aforementioned gas to …

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Air Diffusion System Design In Large Assembly Halls. Case Study Of The Congress Of Deputies Parliament Building, Madrid, Spain, Paul G. O'Donohoe, Miguel A. Gálvez-Huerta, Tomas Gil-Lopez, Pedro M. Dieguez-Elizondo, Juan Castejon-Navas Jan 2019

Air Diffusion System Design In Large Assembly Halls. Case Study Of The Congress Of Deputies Parliament Building, Madrid, Spain, Paul G. O'Donohoe, Miguel A. Gálvez-Huerta, Tomas Gil-Lopez, Pedro M. Dieguez-Elizondo, Juan Castejon-Navas

Articles

The paper describes and analyses the air distribution solution adopted in the refurbishment of the Spanish Congress of Deputies assembly hall. A new approach is proposed for the design of displacement ventilation systems. The system performance is methodically validated both with laboratory tests, computational fluid dynamics analysis and experimental field measurements related to the environmental performance of the built environment. In assembly halls, microclimate and displacement ventilation systems, which supply air by means of floor mounted outlets, have been shown to perform adequately. In this case study floor air supply is not feasible. The solution adapted uses parapet mounted diffusers, …

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Sensing Of Multiple Parameters With Whispering Gallery Mode Optical Fiber Micro-Resonators, Arun Kumar Mallik Dr, Vishnan Kavungal, Gerald Farrell, Yuliya Semenova Jan 2019

Sensing Of Multiple Parameters With Whispering Gallery Mode Optical Fiber Micro-Resonators, Arun Kumar Mallik Dr, Vishnan Kavungal, Gerald Farrell, Yuliya Semenova

Conference Papers

Monitoring of multiple physical parameters, such as humidity, temperature, strain, concentrations of certain chemicals or gases in various environments is of great importance in many industrial applications both for minimizing adverse effects on human health as well as for maintaining production levels and quality of products. In this paper we demonstrate two different approaches to the design of multi-parametric sensors using coupled whispering gallery mode (WGM) optical fiber micro-resonators. In the first approach, a small array of micro-resonators is coupled to a single fiber taper, while in the second approach each of the micro-resonators within an array is coupled to …

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Smart Roads: Investigating Roadways As Energy Sources For Potential Application Of In-Lane Charging, Dhruvalkumar Hitendrakumar Patel Jan 2019

Smart Roads: Investigating Roadways As Energy Sources For Potential Application Of In-Lane Charging, Dhruvalkumar Hitendrakumar Patel

Theses, Dissertations and Capstones

The main aim of this thesis is to explore the potential for using pavements as part of energy harvesting infrastructure. Asphalt pavements can be used for multiple purposes such as for energy harvesting, eco-friendly use of the car, and the utilization of the natural renewable resources to produce electricity and that electricity use for in-lane charging technology which helps to charge a car when it is being driven on the road. The wireless charger is set-up under the asphalt pavement, and it will produce the magnetic field. The piezoelectric material and wind turbine are the electric source for applications such …

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Conditioning Of Velocity Profiles In Pipelines, Charles M. Burt, Pascal Hellmann, Zachary Markow Jan 2019

Conditioning Of Velocity Profiles In Pipelines, Charles M. Burt, Pascal Hellmann, Zachary Markow

BioResource and Agricultural Engineering

This paper reports on the testing of a relatively simple flow conditioner for pipelines. This research found that a pipeline velocity flow conditioner that is constructed with an internal cone, having an inside diameter of 80 percent of the pipeline ID, provided the best results. It provided good velocity conditioning at a distance of two diameters downstream of an obstruction. The minor loss is equal to the velocity head of the flow in the original pipeline diameter.

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Successfull Implementation Of The Baldrige Performance Excellence Program In Small Businesses, Valentina Parra Jan 2019

Successfull Implementation Of The Baldrige Performance Excellence Program In Small Businesses, Valentina Parra

Honors Undergraduate Theses

In recent years, companies have been focused on improving organizational performance and the loyalty of customers to improve sustainability in increasingly complex markets. The Baldrige Performance Excellence framework, generally referred to as the Baldrige criteria, was created to guide professionals in achieving these goals including defining a set of excellence criteria and offering an award program to recognize high-performing organizations. The principles of excellence focus on understanding and working for the stakeholders, improving performance and quality management, and strategically driving continuous improvement. The framework can be used for organizational self-assessments; however, many organizations find it challenging to interpret and apply …

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The Effects Of Intraspecific, Interspecific, And Intergeneric Grafting On The Growth And Development Of Fraxinus Excelsior Scions, John Mcnamara [Thesis] Jan 2019

The Effects Of Intraspecific, Interspecific, And Intergeneric Grafting On The Growth And Development Of Fraxinus Excelsior Scions, John Mcnamara [Thesis]

Masters

Fraxinus excelsior (common ash) is a hardwood tree, native to Ireland which has demonstrated adaptability to growing in a wide range of sites. In 2013, there was a total of over 20,000 hectares recorded under ash in Ireland. From an economic, ecological and carbon aspect ash is also a very important tree species. Since the arrival of Chalara disease, which has the potential to prove fatal to c.97% of the ash population there is an urgent need to consider how to preserve the remaining resistant trees and propagate new resistant lines. Grafting is the suggested method which has the capacity …

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Outside The Site Boundary, Timothy Kwan Fai Chan Jan 2019

Outside The Site Boundary, Timothy Kwan Fai Chan

Faculty of Science & Technology (THEi)

No abstract provided.

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Study Of Synthesis Of Biodegradable Plastics From Alkaline Fermented Excessive Activated Sludge, Yaohui Liu, Chua Hong Jan 2019

Study Of Synthesis Of Biodegradable Plastics From Alkaline Fermented Excessive Activated Sludge, Yaohui Liu, Chua Hong

Faculty of Science & Technology (THEi)

The environmental problems associated with plastics have become increasingly severe in recent years. Technologically and economically feasible solutions are in urgent need in order to ensure sustainable development in the plastic industry. Polyhydroxyalkanoates (PHAs) are a family of specialized polyesters of hydroxyalkanoates (HAs) and can be completely degraded in natural environment. They can be synthesized naturally or under artificially controlled processes. The barrier of limiting the application of PHAs is the high production cost. From years of study, PHAs are proofed to be able to be accumulated within the bacterial cells in activated sludge and the production yield had been …

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Effects Of Beam-Column Depth Ratio On Seismic Behaviour Of Non-Seismic Detailed Reinforced Concrete Beam-Column Joints, Ying Liu, Ho-Fai Wong, Sung-Hei Luk, Ching-Kit Tong, Hei Lam Jan 2019

Effects Of Beam-Column Depth Ratio On Seismic Behaviour Of Non-Seismic Detailed Reinforced Concrete Beam-Column Joints, Ying Liu, Ho-Fai Wong, Sung-Hei Luk, Ching-Kit Tong, Hei Lam

Faculty of Science & Technology (THEi)

Four reinforced concrete exterior beam-column joints with open anchorage beam reinforcement, which are manufactured to simulate those in existing reinforced concrete framed buildings, are tested under reversed cyclic loads simulating earthquake excitation. The particular emphasis of this project is given to the effects of the beam-column depth ratio and the stirrup ratio in joints on the shear strength and seismic behaviour of the exterior joints without seismically designed details. The experimental results indicate that the stirrup placed in the beam-column joint cores can effectively improve the shear strength of the joint and enhance the seismic performance, and the shear strength …

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Fuel Consumption And Emissions Performance Under Real Driving: Comparison Between Hybrid And Conventional Vehicles., Yuhan Huang, Surawski C. Nic, Organ Bruce, John L. Zhou, Oscar H.H Tang, Edward F.C. Chan Jan 2019

Fuel Consumption And Emissions Performance Under Real Driving: Comparison Between Hybrid And Conventional Vehicles., Yuhan Huang, Surawski C. Nic, Organ Bruce, John L. Zhou, Oscar H.H Tang, Edward F.C. Chan

Faculty of Science & Technology (THEi)

Hybrid electric vehicles (HEVs) are perceived to be more energy efficient and less polluting than conventional internal combustion engine (ICE) vehicles. However, increasing evidence has shown that real-driving emissions (RDE) could be much higher than laboratory type approval limits and the advantages of HEVs over their conventional ICE counterparts under real-driving conditions have not been studied extensively. Therefore, this study was conducted to evaluate the real-driving fuel consumption and pollutant emissions performance of HEVs against their conventional ICE counterparts. Two pairs of hybrid and conventional gasoline vehicles of the same model were tested simultaneously in a novel convoy mode using …

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Characterisation Of Diesel Vehicle Emissions And Determination Of Remote Sensing Cutpoints For Diesel High-Emitters., Yuhan Huang, Organ Bruce, John L. Zhou, Surawski C. Nic, Yat-Shing Yam, Edward F.C. Chan Jan 2019

Characterisation Of Diesel Vehicle Emissions And Determination Of Remote Sensing Cutpoints For Diesel High-Emitters., Yuhan Huang, Organ Bruce, John L. Zhou, Surawski C. Nic, Yat-Shing Yam, Edward F.C. Chan

Faculty of Science & Technology (THEi)

Diesel vehicles are a major source of air pollutants in cities and have caused significant health risks to the public globally. This study used both on-road remote sensing and transient chassis dynamometer to characterise emissions of diesel light goods vehicles. A large sample size of 183 diesel vans were tested on a transient chassis dynamometer to evaluate the emission levels of in-service diesel vehicles and to determine a set of remote sensing cutpoints for diesel high-emitters. The results showed that 79% and 19% of the Euro 4 and Euro 5 diesel vehicles failed the transient cycle test, respectively. Most of …

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Improving The Energy Efficiency Of Petrochemical Plant Operations: A Measurement And Verification Case Study Using A Balanced Wave Optimizer, Eve Man Hin Chan, Kar-Kit Chu, Hin-Fung Chow, Chi-Wing Tsang, Danny Chi Kuen Ho, Shuk-Kei Ho Jan 2019

Improving The Energy Efficiency Of Petrochemical Plant Operations: A Measurement And Verification Case Study Using A Balanced Wave Optimizer, Eve Man Hin Chan, Kar-Kit Chu, Hin-Fung Chow, Chi-Wing Tsang, Danny Chi Kuen Ho, Shuk-Kei Ho

Faculty of Science & Technology (THEi)

The Chinese petrochemical industry is facing pressure to meet strict targets of energy consumption and carbon emission reductions. Water pumps are the primary equipment used in most chemical and agrochemical industries sectors since water is commonly used for cooling and heating purposes, but these pumps also consume a large amount of energy. Other uses of water pumps in these industries include producing steam for heating, preparing reaction media or absorptive reagents, rinsing products, and distilling. As for the electrical components of the water pump systems, current technologies of variable frequency drives and superconducting transmission lines are unable to increase the …

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Recent Advancement In Lignin Biorefinery: With Special Focus On Enzymatic Degradation And Valorization, Chong Li, Chao Chen, Xiaofen Wu, Chi-Wing Tsang, Jinhua Mou, Yun Liu, Carol Sze Ki Lin Jan 2019

Recent Advancement In Lignin Biorefinery: With Special Focus On Enzymatic Degradation And Valorization, Chong Li, Chao Chen, Xiaofen Wu, Chi-Wing Tsang, Jinhua Mou, Yun Liu, Carol Sze Ki Lin

Faculty of Science & Technology (THEi)

With the intensive development of lignocellulosic biorefineries to produce fuels and chemicals from biomass-derived carbohydrates, lignin was generated at a large quantity every year. Therefore, lignin has received increasing attention as an abundant aromatics resource in terms of research and development efforts for value-added chemicals production. In this review, studies about lignin degradation especially the crucial enzymes involved and the reaction mechanism were substantially discussed, which provided the molecular basis of lignin biodegradation. Then, the latest improvements in lignin valorization by biological methods were summarized and case studies about value-added compounds from lignin were introduced. Afterwards, challenges, opportunities and prospects …

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Lignin Valorizations With Ni Catalysts For Renewable Chemicals And Fuels Productions, Xiao Chen, Weixiang Guan, Chi-Wing Tsang, Haoquan Hu, Changhai Liang Jan 2019

Lignin Valorizations With Ni Catalysts For Renewable Chemicals And Fuels Productions, Xiao Chen, Weixiang Guan, Chi-Wing Tsang, Haoquan Hu, Changhai Liang

Faculty of Science & Technology (THEi)

Energy and fuels derived from biomass pose lesser impact on the environmental carbon footprint than those derived from fossil fuels. In order for the biomass-to-energy and biomass-to-chemicals processes to play their important role in the loop of the circular economy, highly active, selective, and stable catalysts and the related efficient chemical processes are urgently needed. Lignin is the most thermal stable fraction of biomass and a particularly important resource for the production of chemicals and fuels. This mini review mainly focuses on lignin valorizations for renewable chemicals and fuels production and summarizes the recent interest in the lignin valorization over …

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Tuning The Acidity Of Pt/Cnts Catalysts For Hydrodeoxygenation Of Diphenyl Ether, Weixiang Guan, Chuang Li, Xiao Chen, Xiao-Ying Lu, Chi-Wing Tsang, Haoquan Hu, Hongxu Qi, Changhai Liang Jan 2019

Tuning The Acidity Of Pt/Cnts Catalysts For Hydrodeoxygenation Of Diphenyl Ether, Weixiang Guan, Chuang Li, Xiao Chen, Xiao-Ying Lu, Chi-Wing Tsang, Haoquan Hu, Hongxu Qi, Changhai Liang

Faculty of Science & Technology (THEi)

We herein present a method for the synthesis of HNbWO6, HNbMoO6, HTaWO6 solid acid nanosheet modified Pt/CNTs. By varying the weight of various solid acid nanosheets, a series of Pt/xHMNO6/CNTs with different solid acid compositions (x = 5, 20 wt%; M = Nb, Ta; N = Mo, W) have been prepared by carbon nanotube pretreatment, protonic exchange, solid acid exfoliation, aggregation and finally Pt particles impregnation. The Pt/xHMNO6/CNTs are characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy and NH3-temperature programmed desorption. The study revealed that HNbWO6 nanosheets were attached on CNTs, with some edges of the nanosheets being …

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Nb(Ta)-Based Solid Acid Modified Pt/Cnts Catalysts For Hydrodeoxygenation Of Lignin-Derived Compounds, Weixiang Guan, Xiao Chen, Chuang Li, Jie Zhang, Chi-Wing Tsang, Haoquan Hu, Shaojie Li, Changhai Liang Jan 2019

Nb(Ta)-Based Solid Acid Modified Pt/Cnts Catalysts For Hydrodeoxygenation Of Lignin-Derived Compounds, Weixiang Guan, Xiao Chen, Chuang Li, Jie Zhang, Chi-Wing Tsang, Haoquan Hu, Shaojie Li, Changhai Liang

Faculty of Science & Technology (THEi)

Efficient upgrading of lignin bio-oils into oxygen-free liquid alkane fuels is a challenging task owing to the incompatibility of the phenolic feedstock with conventional fuels and the availability of effective hydrotreating catalysts based on the current refinery infrastructure. In this work, a series of solid acid nanosheets (HNbWO6, HNbMoO6, HTaWO6) modified Pt/CNTs bifunctional catalysts were evaluated in hydrodeoxygenation (HDO) of lignin-derived compounds. The effects of types of nanosheets and the synergistic effect between metal sites and acid sites were discussed via HDO of diphenyl ether. Pt/HNbWO6/CNTs catalyst exhibited the most efficient performance for the HDO of diphenyl ether to cyclohexane …

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A Novel 3d Simulation Model For Investigating Liquid Desiccant Dehumidification Performance Based On Cfd Technology., Tao Wen, Yimo Luo, Lu Lin Jan 2019

A Novel 3d Simulation Model For Investigating Liquid Desiccant Dehumidification Performance Based On Cfd Technology., Tao Wen, Yimo Luo, Lu Lin

Faculty of Science & Technology (THEi)

Previous 2D CFD simulation models fail to elaborate the actual simultaneous flow and dehumidification process in liquid desiccant cooling system. Accordingly, the present study successfully developed a novel 3D simulation model for investigating the liquid desiccant dehumidification performance of a falling film dehumidifier. The penetration mass transfer model was implemented in the simulation to account for the interfacial dehumidification process. Experimental system was built for the model validation and the results indicated that the newly developed 3D CFD model could predict the absolute moisture removal accurately with an average deviation of 7%. Parametric study revealed that the dehumidification performance was …

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Study On The Performance Of Distributed Energy Systems Based On Historical Loads Considering Parameter Uncertainties For Decision Making., Chong Zhang, Xue Xue, Qianzhou Du, Yimo Luo, Wenjie Gang Jan 2019

Study On The Performance Of Distributed Energy Systems Based On Historical Loads Considering Parameter Uncertainties For Decision Making., Chong Zhang, Xue Xue, Qianzhou Du, Yimo Luo, Wenjie Gang

Faculty of Science & Technology (THEi)

Distributed energy systems (DESs) are becoming increasingly popular because of their high-energy efficiency and low pollution emissions. Accurate performance evaluation of such systems is critical for processes at the early design stages. However, there are considerable uncertainties in terms of the parameters used for performance evaluation and design optimization, including component efficiencies, customer demands, and energy markets. These uncertainties can significantly influence the performance of DESs. Without consideration of these uncertainties, the performance of DESs can be overestimated or underestimated, which leads to inaccurate decision-making. Therefore, this paper presents a comprehensive evaluation of the performance of DESs by considering uncertainties …

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Flexible Integration Of Liquid Air Energy Storage With Liquefied Natural Gas Regasification For Power Generation Enhancement, Xiaohui She, Tongtong Zhang, Lin Cong, Xiaodong Peng, Chuan Li, Yimo Luo, Yulong Ding Jan 2019

Flexible Integration Of Liquid Air Energy Storage With Liquefied Natural Gas Regasification For Power Generation Enhancement, Xiaohui She, Tongtong Zhang, Lin Cong, Xiaodong Peng, Chuan Li, Yimo Luo, Yulong Ding

Faculty of Science & Technology (THEi)

Liquid Air Energy Storage (LAES) is one of the most promising energy storage technologies for achieving low carbon emissions. Our research shows that the LAES produces a considerable amount of excess heat that cannot be cost-effectively utilised in a standalone LAES system. On the other hand, the regasification of liquefied natural gas (LNG) often leads to waste of a large amount of high-grade cold energy. Therefore, this paper proposes the integration of the LAES with the LNG regasification process via a Brayton cycle (denoted as LAES-Brayton-LNG), where pressurized propane is used as both the heat transfer fluid and storage material …

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A Review Of Renewable Energy Assessment Methods In Green Building And Green Neighborhood Rating Systems, Chong Zhang, Chengliao Cui, Ying Zhang, Jiaqi Yuan, Yimo Luo, Wenjie Gang Jan 2019

A Review Of Renewable Energy Assessment Methods In Green Building And Green Neighborhood Rating Systems, Chong Zhang, Chengliao Cui, Ying Zhang, Jiaqi Yuan, Yimo Luo, Wenjie Gang

Faculty of Science & Technology (THEi)

Green buildings and neighborhoods can help mitigate impacts of buildings on the environment, society and economy. Many rating systems or tools have been developed worldwide to assess and certificate green buildings or green neighborhoods. Renewable energy plays an important role in achieving green buildings/neighborhoods or zero energy buildings/neighborhoods by reducing fuel consumption and pollution emissions. However, substantial differences exist in assessing or quantifying the renewable energy in green building/neighborhood rating systems. This paper therefore provides a comprehensive review on renewable energy assessment methods adopted in green building/neighborhood rating systems, which would be very helpful to understand and then improve the …

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Advanced Processing Of Nickel-Titanium-Graphite Based Metal Matrix Composites, Amit K. Patil Jan 2019

Advanced Processing Of Nickel-Titanium-Graphite Based Metal Matrix Composites, Amit K. Patil

ETD Archive

A new class of in situ titanium carbide (TiC)/graphite (C) reinforced nickel matrix composites with variation in composition particularly varying C/Ti ratio have been processed using two different processing techniques. Firstly, via mechanical alloying (MA) followed by spark plasma sintering (SPS), i.e. solid-state processing. Secondly, using Laser engineered net shaping (LENSTM) technique, i.e. metal additive manufacturing technique. Mechanical alloying has gained special attention as a powerful non-equilibrium process for fabricating amorphous and nanocrystalline materials, whereas spark plasma sintering is a unique technique for processing dense and near net shape bulk alloys with homogeneous microstructure. Laser engineered net shaping (LENSTM) is …

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Anchoring Cu 1 Species Over Nanodiamond-Graphene For Semi-Hydrogenation Of Acetylene, Fei Huang, Yuchen Deng, Yunlei Chen, Xiangbin Cai, Mi Peng, Zhimin Jia, Jinglin Xie, Dequan Xiao, Xiaodong Wen, Ning Wang, Zheng Jiang, Hongyang Liu, Ding Ma Jan 2019

Anchoring Cu 1 Species Over Nanodiamond-Graphene For Semi-Hydrogenation Of Acetylene, Fei Huang, Yuchen Deng, Yunlei Chen, Xiangbin Cai, Mi Peng, Zhimin Jia, Jinglin Xie, Dequan Xiao, Xiaodong Wen, Ning Wang, Zheng Jiang, Hongyang Liu, Ding Ma

Chemistry and Chemical Engineering Faculty Publications

The design of cheap, non-toxic, and earth-abundant transition metal catalysts for selective hydrogenation of alkynes remains a challenge in both industry and academia. Here, we report a new atomically dispersed copper (Cu) catalyst supported on a defective nanodiamondgraphene (ND@G), which exhibits excellent catalytic performance for the selective conversion of acetylene to ethylene, i.e., with high conversion (95%), high selectivity (98%), and good stability (for more than 60 h). The unique structural feature of the Cu atoms anchored over graphene through Cu-C bonds ensures the effective activation of acetylene and easy desorption of ethylene, which is the key for the outstanding …

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A Versatile Route To Fabricate Single Atom Catalysts With High Chemoselectivity, Xiaohui He, Qian He, Yuchen Deng, Mi Peng, Hongyu Chen, Ying Zhang, Siyu Yao, Mengtao Zhang, Dequan Xiao, Ding Ma, Binghui Ge, Hongbing Ji Jan 2019

A Versatile Route To Fabricate Single Atom Catalysts With High Chemoselectivity, Xiaohui He, Qian He, Yuchen Deng, Mi Peng, Hongyu Chen, Ying Zhang, Siyu Yao, Mengtao Zhang, Dequan Xiao, Ding Ma, Binghui Ge, Hongbing Ji

Chemistry and Chemical Engineering Faculty Publications

Preparation of single atom catalysts (SACs) is of broad interest to materials scientists and chemists but remains a formidable challenge. Herein, we develop an efficient approach to synthesize SACs via a precursor-dilution strategy, in which metalloporphyrin (MTPP) with target metals are co-polymerized with diluents (tetraphenylporphyrin, TPP), followed by pyrolysis to N-doped porous carbon supported SACs (M1/N-C). Twenty-four different SACs, including noble metals and non-noble metals, are successfully prepared. In addition, the synthesis of a series of catalysts with different surface atom densities, bi-metallic sites, and metal aggregation states are achieved. This approach shows remarkable adjustability and generality, providing …

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Task Affect And Task Understanding In Engineering Problem Solving, Oenardi Lawanto, Angela L. Minichiello, Jacek Uziak, Andreas Febrian Jan 2019

Task Affect And Task Understanding In Engineering Problem Solving, Oenardi Lawanto, Angela L. Minichiello, Jacek Uziak, Andreas Febrian

Engineering Education Faculty Publications

Within the self-regulated learning literature, motivation is considered to be an essential feature of students’ self-regulatory processes. Additionally, task affect (i.e., personal objectives and task value) is thought to influence students’ self-regulatory processes; insufficient task affect may lead to failures to self-regulate effectively. In a school setting, task affect is a form of motivation for completing the course tasks in order to attain course-level goals that are inherently valued. In this study, motivation is operationalized as students’ personal objectives and task values, and self-regulation refers to students’ understanding of tasks (also called task interpretation skill) involved in a course. This …

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Ua66/16/1 Ogden College Of Science & Engineering Ogden College Of Science & Engineering Administration, Wku Archives Jan 2019

Ua66/16/1 Ogden College Of Science & Engineering Ogden College Of Science & Engineering Administration, Wku Archives

WKU Archives Collection Inventories

Administrative records created by Industrial & Engineering Technology.

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Impact Of Sea Surface Temperature And Surface Air Temperature On Maximizing Typhoon Rainfall: Focusing On Typhoon Maemi In Korea, Jeonghyeon Choi, Jeonghoon Lee, Sangdan Kim Jan 2019

Impact Of Sea Surface Temperature And Surface Air Temperature On Maximizing Typhoon Rainfall: Focusing On Typhoon Maemi In Korea, Jeonghyeon Choi, Jeonghoon Lee, Sangdan Kim

Civil and Environmental Engineering Faculty Publications

In this study, the effects of surface air temperature (SAT) and sea surface temperature (SST) changes on typhoon rainfall maximization are analysed. Based on the numerically reproduced Typhoon Maemi, this study tried to maximize the typhoon-induced rainfall by increasing the amount of saturated water vapour in the atmosphere and the amount of water vapour entering the typhoon. Using the Weather Research and Forecasting (WRF) model, which is one of the regional climate models (RCMs), the rainfall simulated by WRF while increasing the SAT and SST to various sizes at initial conditions and boundary conditions of the model was analysed. As …

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Comparison Of Position Control With And Without Friction On A Foot Interface, Ryder Winck, Brandon Rudolph Jan 2019

Comparison Of Position Control With And Without Friction On A Foot Interface, Ryder Winck, Brandon Rudolph

Faculty Publications - Mechanical Engineering

No abstract provided.

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Planar Motion Structures Modeling And Simulation With Mekin2d Subroutines, Eric Constans, P Simionescu, Nicola Golfari Jan 2019

Planar Motion Structures Modeling And Simulation With Mekin2d Subroutines, Eric Constans, P Simionescu, Nicola Golfari

Faculty Publications - Mechanical Engineering

No abstract provided.

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