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Articles 20731 - 20760 of 27459

Full-Text Articles in Engineering

Electrochemiluminescence Assay Based On Bipolar Electrode For Bioanalysis, Mei-Sheng Wu, Jing-Juan Xu, Hong-Yuan Chen Feb 2015

Electrochemiluminescence Assay Based On Bipolar Electrode For Bioanalysis, Mei-Sheng Wu, Jing-Juan Xu, Hong-Yuan Chen

Journal of Electrochemistry

Bipolar electrodes (BPEs) are electronic conductors which are usually embedded into microchannels. The potential difference at the BPE/solution interface is obtained by applying a voltage at the two ends of the microchannel. When it reaches a critical value, the redox reaction takes place at both poles of the BPE simultaneously. Compared with other detection methods, the electrochemiluminescence (ECL) platform based on BPE possesses the advantages of concentration enrichment, high sensitivity, low cost, portable sensor system, no need for a light source, which is quite suitable for bioanalysis. This paper reviews the ECL-BPE strategy for bioanalysis and proposes the future research …

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An Enzymatic Ethanol/O2 Biofuel Cell Powered By Commercial Vodka Fuel, Yi-Ming Yan, Lan-Qun Mao Feb 2015

An Enzymatic Ethanol/O2 Biofuel Cell Powered By Commercial Vodka Fuel, Yi-Ming Yan, Lan-Qun Mao

Journal of Electrochemistry

This study demonstrates the performance of a new type alcohol/O2 biofuel cell assembled by using alcohol dehydrogenase (ADH) and bilirubin oxidase (BOD) as the biocatalysts of the bioanode and the biocathode for the bioelectrocatalytic oxidation of alcohol and reduction of oxygen, respectively. To construct the bioanode and the biocathode, single-walled carbon nanotubes (SWCNTs) were used. In the bioanode, SWCNTs were used as the supporting materials for both methylene green (MG) which was used as the electrocatalyst for the oxidation of NADH and ADH. The as-constructed MG/ADH/SWCNTs-based bioanode exhibits a good activity toward the bioelectrocatalytic oxidation of ethanol. In the …

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Sensitive Detection Of Hydroxyl Radical Based On Silver-Enhanced Gold Nanoparticle Label, Yan Yang, Peng Yu, Xiao-Hua Zhang, Jin-Hua Chen Feb 2015

Sensitive Detection Of Hydroxyl Radical Based On Silver-Enhanced Gold Nanoparticle Label, Yan Yang, Peng Yu, Xiao-Hua Zhang, Jin-Hua Chen

Journal of Electrochemistry

A novel DNA-based electrochemical sensor has been successfully constructed for sensitive detection of hydroxyl radical (·OH) based on the silver-enhanced gold nanoparticle label. Thiolated DNA1 was firstly immobilized on the gold electrode through Au—S bonds. The ·OH generated from Fenton reaction could induce serious oxidative damage of the DNA1 layer on the electrode surface. Then DNA2-functionalized gold nanoparticles (DNA2-AuNPs) were linked on the electrode through the hybridization between DNA2 and undamaged DNA1. Based on the catalytic reduction of silver ion by AuNPs, a silver layer was formed on the surface of AuNPs. The quantitative assay of ·OH was carried out …

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Electrochemical Detection Of L-Cysteine Based On Iron Phthalocyanine/Nitrogen-Doped Graphene Modified Electrodes, Jing-Jing Xiao, Hui-Ying Xu, Li Xu, Bao-Hong Liu Feb 2015

Electrochemical Detection Of L-Cysteine Based On Iron Phthalocyanine/Nitrogen-Doped Graphene Modified Electrodes, Jing-Jing Xiao, Hui-Ying Xu, Li Xu, Bao-Hong Liu

Journal of Electrochemistry

In this study, we report a facile method to develop FePc/N-G hybrid modified electrode for the detection of L-cysteine. The electrochemical sensor was characterized by cyclic voltammetry and amperometric response. The sensor exhibited a wider linear range with rapid response which has outperformed pure FePc/GCE, highlighting the important role of nitrogen doped graphene as substrate for improving the electrochemical response property.

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Nanosized Fe2O3 On Three Dimensional Hierarchical Porous Graphene-Like Matrices As High-Performance Anode Material For Lithium Ion Batteries, Qin-Wei Zhang, Yun-Yong Li, Pei-Kang Shen Feb 2015

Nanosized Fe2O3 On Three Dimensional Hierarchical Porous Graphene-Like Matrices As High-Performance Anode Material For Lithium Ion Batteries, Qin-Wei Zhang, Yun-Yong Li, Pei-Kang Shen

Journal of Electrochemistry

Ferric oxide (Fe2O3) as a promising anode material for lithium ion battery is due to its high theoretical capacity (1007 mAh·g-1), earth abundance and low cost. The nanosized Fe2O3 on the three dimensional hierarchical porous graphene-like network (denoted as Fe2O3-3D HPG) has been synthesized by homogeneous precipitation and heat treatment. The 3D HPG can provide a highly conductive structure in conjunction to support well contacted Fe2O3 nanoparticles, and effectively enhance the mechanical strength of the matrices during volume changes, as well as improve the …

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Preparation And Properties Of Titanium Based Metal Oxide Electrodes For Ammonia Nitrogen Wastewater Treatment, Xue Li, Meng Xue, Ling Huang, Jun-Tao Li, Shi-Gang Sun Feb 2015

Preparation And Properties Of Titanium Based Metal Oxide Electrodes For Ammonia Nitrogen Wastewater Treatment, Xue Li, Meng Xue, Ling Huang, Jun-Tao Li, Shi-Gang Sun

Journal of Electrochemistry

In this paper, four types of titanium based metal oxides electrodes were prepared by thermal decomposition method: Ti/SnO2+Sb2O3, Ti/SnO2+Sb2O3/SnO2+IrO2, Ti/SnO2+Sb2O3/SnO2+RuO2, Ti/SnO2+Sb2O3/SnO2+CeO2. The XRD results show that CeO2 in Ti/SnO2+Sb2O3/SnO2+CeO2 displayed a good crystal structure, and there was no significant oxygen evolution reaction occurred after electrolytic oxidation. Compared with the other three electrodes, the Ce-doped …

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Naio4 Oxidation Of Mussel Adhesive Protein Film And Its Corrosion Protection For Mg-1.0ca Alloy, Rui-Qing Hou, Ping-Li Jiang, Shi-Gang Dong, Chang-Jian Lin Feb 2015

Naio4 Oxidation Of Mussel Adhesive Protein Film And Its Corrosion Protection For Mg-1.0ca Alloy, Rui-Qing Hou, Ping-Li Jiang, Shi-Gang Dong, Chang-Jian Lin

Journal of Electrochemistry

The effect of oxidation of mussel adhesive protein (Mefp-1) film on the corrosive resistance for Mg-1.0Ca alloy was investigated by scanning electron microscopy (SEM), atom force microscopy (AFM), electron probe microanalysis (EPMA), Infrared reflection absorption spectroscopy (IRAS) and electrochemical methods. The results showed that the NaIO4 induced oxidation of the pre-formed Mefp-1 film with porous morphology involved structural change of the DOPA group in the protein and resulted in a more uniform film with net-like morphology. The protein film without oxidation had an increasing resistance for the corrosion of Mg-1.0Ca alloy up to 7 days exposure. After oxidation, Epit …

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Effects Of Etchants On Surface Morphologies And Electrochemical Performance Of Iro2-Mno2 Anodic Nano-Coatings, Qing-Guo Fan, Zhi-Guo Ye, Hui-Min Meng, Chun-Min Lu Feb 2015

Effects Of Etchants On Surface Morphologies And Electrochemical Performance Of Iro2-Mno2 Anodic Nano-Coatings, Qing-Guo Fan, Zhi-Guo Ye, Hui-Min Meng, Chun-Min Lu

Journal of Electrochemistry

The IrO2-MnO2 anodic nano-coatings were prepared by the traditional thermal decomposition method on the different surfaces of Ti substrates pretreated by different etchants (HCl, H2SO4, C2H2O4 and HF). Surface morphologies and electrochemical performance of the Ti based IrO2-MnO2 anodic coatings were investigated by field emission scanning electron microscopy (FESEM), cyclic voltammetry (CV) and polarization techniques. Analysis showed that the denser IrO2 nano-particles with longer dimensions were obtained at the IrO2-MnO2 anodic coating surfaces on the Ti substrates etched by HF and …

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A Contribution Toward Better Understanding Of Overbanking Tendency In Fixed-Wing Aircraft, Nihad E. Daidzic Feb 2015

A Contribution Toward Better Understanding Of Overbanking Tendency In Fixed-Wing Aircraft, Nihad E. Daidzic

Journal of Aviation Technology and Engineering

The phenomenon of overbanking tendency for a rigid-body, fixed-wing aircraft is investigated. Overbanking tendency is defined as a spontaneous, unbalanced rolling moment that keeps increasing an airplane’s bank angle in steep turns and must be arrested by opposite aileron action. As stated by the Federal Aviation Administration, the overbanking tendency may lead to a loss of control, especially in instrument meteorological conditions. It was found in this study that the speed differential over wing halves in horizontal turns indeed creates a rolling moment that achieves maximum values for bank angles between 45 and 55 degrees. However, this induced rolling moment …

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Regional Aviation Early Career Pilot Attributes Study, Stewart Wayne Schreckengast, Douglas A. Drury Feb 2015

Regional Aviation Early Career Pilot Attributes Study, Stewart Wayne Schreckengast, Douglas A. Drury

International Journal of Aviation, Aeronautics, and Aerospace

The Regional Aviation Association of Australia (RAAA) has identified a need to better understand the concerns of its members in the attraction and retention of early career pilots. RAAA has further identified the need to better understand any shortcomings in professional aviation training programs in Australia so as to provide appropriate guidance from an industry point of view. The RAAA Training and Education Committee (TEC) facilitated the undertaking of this study with its members. This study provides insight into the technical and non-technical attributes that aviation manager’s value in early career pilots.

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Study On Optimized Hull Form Of Basic Ships Using Optimization Algorithm, Hee-Jong Choi, Dong-Woo Park, Myung-Soo Choi Feb 2015

Study On Optimized Hull Form Of Basic Ships Using Optimization Algorithm, Hee-Jong Choi, Dong-Woo Park, Myung-Soo Choi

Journal of Marine Science and Technology–Taiwan

In order to achieve minimum resistance for a ship hull, we used an optimization algorithm and computational fluid dynamics to develop a hull-form design. An ITTC 1957 modelship correlation line formula was used to estimate the frictional resistance coefficient, and the wave-making resistance coefficient was evaluated by the Rankine source panel method with nonlinear free-surface boundary conditions. The geometry of the hull surface was represented and modified by a B-spline surface-modeling technique during the optimization process. Wigley and series 60 (CB = 0.60) hulls were selected to obtain an optimized hull that produces minimum resistance. Experimental tests were carried out …

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Improvement In Convergent-Types Of Micromixers By The Use Of Plates, Chin-Tsan Wang, Hong-Chang Zhou Feb 2015

Improvement In Convergent-Types Of Micromixers By The Use Of Plates, Chin-Tsan Wang, Hong-Chang Zhou

Journal of Marine Science and Technology–Taiwan

Micromixers have a wide application in the biomedical engineering and chemical industry. The passive micromixer is now widely studied because it is simple and easy to fabricate. In this study single plates applied in a convergent-type flow channel are utilized to enhance the flow mixing at a lower Reynolds number. Results show that good flow mixing could be achieved in a convergent-type flow channel. The highest flow mixing efficiency, 0.974, is found at the optimal combination of Re = 80 and plate dimensions of J = 45 μm, G1 = 15 μm, and G2 = 3 μm. Furthermore, the flow …

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Estimated State Feedback Fuzzy Control For Passive Discrete Time-Delay Multiplicative Noised Pendulum Systems, Wen-Jer Chang, Chun-Hung Lin, Cheung-Chieh Ku Feb 2015

Estimated State Feedback Fuzzy Control For Passive Discrete Time-Delay Multiplicative Noised Pendulum Systems, Wen-Jer Chang, Chun-Hung Lin, Cheung-Chieh Ku

Journal of Marine Science and Technology–Taiwan

This paper develops a fuzzy controller design method via estimated state feedback scheme for discrete-time nonlinear stochastic time-delay systems which are presented by Takagi– Sugeno fuzzy model with multiplicative noises. The proposed design method is accomplished by the concept of parallel distributed compensation. Using the Lyapunov-Krasovskii function and passivity theory, the stability conditions are derived to guarantee the stability and attenuation performance. An algorithm is proposed in this paper to solve the derived stability conditions that belong to non-strict linear matrix inequality problems. Moreover, the discrete Jensen inequality and free-weighting matrix technique are employed to decrease the conservatism of the …

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Physical And Mechanical Properties Of Cement-Based Composites With Bagasse Ash, Maochieh Chi, Ran Huang, Weichung Yeih Feb 2015

Physical And Mechanical Properties Of Cement-Based Composites With Bagasse Ash, Maochieh Chi, Ran Huang, Weichung Yeih

Journal of Marine Science and Technology–Taiwan

Bagasse ash (BA), a byproduct of sugar and alcohol production, is among the potential pozzolanic materials that can be blended with Portland cement. The purpose of this study was to investigate the properties of cement-based composites that have various particle sizes of BA and cement replacement percentages. Three particle size distributions—passing the No. 100, No. 200, and No. 325 sieves— and replacement of cement at 10%, 20%, and 30% by weight of binder, were designed to cast nine BA composites. The performance of the BA specimens was compared with reference mortars produced using ordinary Portland cement (OPC). The experimental results …

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A Novel Approach To Solve The Great Circle Track Based On Rotation Transformation, Chih-Li Chen, Tsung-Hsuan Hsieh, Tien-Pen Hsu Feb 2015

A Novel Approach To Solve The Great Circle Track Based On Rotation Transformation, Chih-Li Chen, Tsung-Hsuan Hsieh, Tien-Pen Hsu

Journal of Marine Science and Technology–Taiwan

The great circle track (GCT) is composed of several rhumb lines in practice. Given the initial conditions, the waypoints along the GCT can be determined by the navigator. To reduce the complex calculation in a space system, transforming the system into a planar coordinate one is considered. Thus, an idea of the plane of the celestial meridian in celestial navigation is proposed to determine the waypoints, which are presented in equator coordinate system and horizontal one. For locating the waypoints on the GCT, the rotation transformation is introduced to derive the governing equations for the computation procedures with respect to …

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Research On The Earned Value Management System Applied In Consultancy Project Performance, H. Ping Tserng, Wen-Shyong Lin, Chien-Chung Li, Kai-Wei Weng, Denise C. Loisel Feb 2015

Research On The Earned Value Management System Applied In Consultancy Project Performance, H. Ping Tserng, Wen-Shyong Lin, Chien-Chung Li, Kai-Wei Weng, Denise C. Loisel

Journal of Marine Science and Technology–Taiwan

Performance analyses of consultancy firms usually include man-hour analyses, schedule analyses and budget analyses. During the project management process, the project scope change makes it difficult for the management to control the project and predict the future trends. This research has developed a project performance measurement model based on the concepts of CAPP (Continuous Assessment of Project Performance) and PMBOK (Project Management Body of Knowledge), created by the Construction Industry Institute and PMI (Project Management Institute). Through data collection, analysis, and summary, this study establishes a historical database, reviews existing records, and selects major and significant performance evaluation indicators from …

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An Event-Triggered Transmission Policy For Networked L2-Gain Control, Jenq-Lang Wu, Yuan-Chang Chang, Xin-Hong Chen, Tsu-Tian Lee Feb 2015

An Event-Triggered Transmission Policy For Networked L2-Gain Control, Jenq-Lang Wu, Yuan-Chang Chang, Xin-Hong Chen, Tsu-Tian Lee

Journal of Marine Science and Technology–Taiwan

This paper considers the design of networked feedback controllers with more efficient allocation of network resources. With a given admissible controller, an L2-gain preserving event-triggered transmission policy is proposed for determining whether the currently measured state at the sensor node should be sent to the controller through the network for updating control signal. In this way, not all the measured data are sent and then the network traffic in a networked control system can be reduced. An algorithm is proposed to enlarge the transmission boundary of the event-triggered transmission rule for increasing inter-transmitting times. An illustrative example is given for …

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A Comparison Of Float Ownership Issues For Construction Projects Between Taiwan And China, Ming-Teh Wang, Su-Ling Fan, Chi-Chen Tsai, Luh-Maan Chang Feb 2015

A Comparison Of Float Ownership Issues For Construction Projects Between Taiwan And China, Ming-Teh Wang, Su-Ling Fan, Chi-Chen Tsai, Luh-Maan Chang

Journal of Marine Science and Technology–Taiwan

Float ownership is a controversial issue in construction projects. This study, which focuses on Taiwan and China, finds that attitudes regarding float ownership differ among stakeholders with different national and occupational backgrounds. To avoid disputes, practitioners should notice these differences before signing contracts. This study uses surveys to identify the potential differences in attitude regarding three important float ownership issues. The results vary from a previous study undertaken in the United Kingdom. The major findings of the study include: (1) contracts need to include clauses related to float ownership; (2) Taiwanese contractors and Chinese owners tend to view the float …

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Wave Loading Distribution Of Oscillating Water Column Caisson Breakwaters Under Non-Breaking Wave Forces, Yu-Shu Kuo, Chi-Sheng Lin, Chih-Yin Chung, Yu-Kai Wang Feb 2015

Wave Loading Distribution Of Oscillating Water Column Caisson Breakwaters Under Non-Breaking Wave Forces, Yu-Shu Kuo, Chi-Sheng Lin, Chih-Yin Chung, Yu-Kai Wang

Journal of Marine Science and Technology–Taiwan

Wave energy is one of the most potential marine energy resources in Taiwan, especially in the northeast and east coast of Taiwan. There are numerous existing wave energy devices. Among them, Oscillating Water Column (OWC) caisson breakwater is very suitable for the harbors in Taiwan. This multiple function structure can generate electric power and protect harbor. To evaluate the stability of OWC caisson breakwater, the loadings induced by wave acted on the OWC caisson breakwater are analyzed. Experiments of a small scale physical model of OWC caisson breakwater is presented in this study. The model is fixed in the wave …

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A Modified Algorithm Of Steepest Descent Method For Solving Unconstrained Nonlinear Optimization Problems, Chein-Shan Liu, Jiang-Ren Chang, Yung-Wei Chen Feb 2015

A Modified Algorithm Of Steepest Descent Method For Solving Unconstrained Nonlinear Optimization Problems, Chein-Shan Liu, Jiang-Ren Chang, Yung-Wei Chen

Journal of Marine Science and Technology–Taiwan

The steepest descent method (SDM), which can be traced back to Cauchy (1847), is the simplest gradient method for unconstrained optimization problem. The SDM is effective for well-posed and low-dimensional nonlinear optimization problems without constraints; however, for a large-dimensional system, it converges very slowly. Therefore, a modified steepest decent method (MSDM) is developed to deal with these problems. Under the MSDM framework, the original global minimization problem is transformed into a quadratic-form minimization based on the SDM and the current iterative point. Our starting point is a manifold defined in terms of the quadratic function and a fictitious time variable. …

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An Experimental Field Study Using A Flexible High-Strengh Net Breakwater For Shore Protection, Chyan-Deng Jan, Ta-Hsiung Peng, Shih-Jen Huang, Hung-Chu Hsu Feb 2015

An Experimental Field Study Using A Flexible High-Strengh Net Breakwater For Shore Protection, Chyan-Deng Jan, Ta-Hsiung Peng, Shih-Jen Huang, Hung-Chu Hsu

Journal of Marine Science and Technology–Taiwan

Shorelines are subjected to severe erosion because of the action of perennial waves. Although traditional rigid structures have historically been constructed as coastline protection devices, they do not always work effectively, and certain coastal areas such as Shuang-Chun beach in Tainan, Taiwan, continue to experience serious erosion due to damaged and ineffective structures. The necessity of shore protection has been recognized in recent years, and alternative solutions are being sought. In this paper, we present a high-strength-net device that acts as a flexible breakwater to reduce wave energy, induce sediment deposition, and offer a more economic and innovative method for …

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Investigating Problem-Based Learning Tutorship In Medical And Engineering Programs In Malaysia, Virginie F. C. Servant, Eleanor F. A. Dewar Feb 2015

Investigating Problem-Based Learning Tutorship In Medical And Engineering Programs In Malaysia, Virginie F. C. Servant, Eleanor F. A. Dewar

Interdisciplinary Journal of Problem-Based Learning

Although Malaysia was the first country in Asia to adopt problem-based learning (PBL), the impact that this has had on its tutors remains largely unexplored. This paper details a qualitative study of the changing perceptions of teaching roles in two groups of problem-based learning tutors in two institutional contexts—one in medicine located in Kuala Lumpur and one in engineering located in Johor Bahru. Using Interpretive Phenomenological Analysis, the authors attempt to describe the way in which the two groups have experienced their changing professional world, and the mental processes through which they rationalize the transformation of Malaysia’s educational landscape. This …

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Methods For Analyzing The Structure Of Creases In Heat Sealed Paperboard Packages, Ville Leminen, Petri Mäkelä, Panu Tanninen, Juha Varis Feb 2015

Methods For Analyzing The Structure Of Creases In Heat Sealed Paperboard Packages, Ville Leminen, Petri Mäkelä, Panu Tanninen, Juha Varis

Journal of Applied Packaging Research

Press-forming of paperboard has been previously studied by several authors. A point of interest regarding gas tight heat sealing of the packages are the creases in the package. The objective of this article was to study and compare different microscopic imaging methods to research an optimal imaging method for the formation of creases in the press-forming process of polymer coated paperboard trays. The studied methods were: Scanning electrode microscopy (SEM), X-ray Microtomography, Optical light microscopy and Polarized light microscopy. All four tested methods delivered clear images. Casting of the samples in an acrylic resin and light microscope imaging was found …

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Towards Sustainability In The Oil And Gas Sector: Benchmarking Of Environmental, Health, And Safety Efforts, Jennifer Schneider, Salim Ghettas, Nacer Merdaci, Mervin Brown, Joseph Martyniuk, Waleed Alshehri, Anthony Trojan Jan 2015

Towards Sustainability In The Oil And Gas Sector: Benchmarking Of Environmental, Health, And Safety Efforts, Jennifer Schneider, Salim Ghettas, Nacer Merdaci, Mervin Brown, Joseph Martyniuk, Waleed Alshehri, Anthony Trojan

Journal of Environmental Sustainability

The environmental, social and climate change issues that face the world today have all industries considering how they will address sustainability in the future. The purpose of this paper is to evaluate the maturity of environmental, health and safety (EHS) efforts and progress toward sustainability in the oil and gas sector. Ten major oil companies have been analyzed based on public information including their published annual reports. Companies refer to voluntary initiatives when reporting their performance yet the assessment suggests that the sector overall continues to make progress and is maturing in its sustainability efforts. Many management system gaps were …

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Evaluation Of Vibration Profiles For Uld Dollies At Air-Cargo Sorting Hubs, Jay Singh, Paul Singh, Koushik Saha Jan 2015

Evaluation Of Vibration Profiles For Uld Dollies At Air-Cargo Sorting Hubs, Jay Singh, Paul Singh, Koushik Saha

Journal of Applied Packaging Research

This study measured and analyzed the vibration characteristics of an important component of the air package shipping environment which has not been previously studied or included in the pre-shipment testing of packages. This is the movement of packages between aircraft after they are flown in to an airport-hub and being taken into a facility to conduct a sort, or after being sorted as they are transferred back on to aircraft. These transfers at airport-hubs between trucks, building sortation facilities and aircraft are done using material handling equipment called “dollies” or carts. These carts often are connected with each other into …

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Separation Of The Petroleum System, Ali Ibrahim Neamah Jan 2015

Separation Of The Petroleum System, Ali Ibrahim Neamah

The Hilltop Review

This study discusses the overall process of crude oil separation as well as the necessary equipment used in the process. Also discussed and analyzed are potential issues seen in the crude oil extraction process. Reasons why these operation problems may occur are analyzed as well as treatment options for such occurring issues are discussed for employees and students alike. This research is based off of personal involvement at the Nasiriyah Degassing Station located in Dhi Qar, Iraq.

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Advantages Of A Finite Extensible Nonlinear Elastic Potential In Lattice Boltzmann Simulations, Tai-Hsien Wu, Dewei Qi Jan 2015

Advantages Of A Finite Extensible Nonlinear Elastic Potential In Lattice Boltzmann Simulations, Tai-Hsien Wu, Dewei Qi

The Hilltop Review

A new structure, generalized lattice nonlinear spring model (GLNSM), which adopts non-linear FENE-LJ potential instead of harmonic potential, has been coupled with lattice Boltzmann simulation for solving fluid-solid interaction problem. In this article, a significant work is the relationship between the GLNSM (FENE-LJ potential) and Young’s modulus has been described in detail. A validation has also been presented to prove that GLNSM is reliable.

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Designing Electronics For An Artificial Leg, Taylor Barto Jan 2015

Designing Electronics For An Artificial Leg, Taylor Barto

The Downtown Review: An Interdisciplinary Journal Written and Peer-Reviewed by Mandel Honors College Students at Cleveland State University

A regenerative prosthesis is modeled and simulated. The simulation is optimized with the biogeography-based optimization algorithm to obtain desired knee angle tracking with a reference knee trajectory and to regenerate energy. The prosthesis is able to track a reference knee angle with a 5.1 degree error averaged over an entire stride and regenerate some energy throughout the stride.

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Analytical Report On Consumer Gasoline Choices, Michael Stanley Jan 2015

Analytical Report On Consumer Gasoline Choices, Michael Stanley

The Downtown Review: An Interdisciplinary Journal Written and Peer-Reviewed by Mandel Honors College Students at Cleveland State University

Most gas in the United States comes from the same few refineries, where different brands of gasoline are created as they are pumped into the fuel tankers, as opposed to individual retail facilities. Dr. Edward Murphy of the American Petroleum Institute explains that “base gas is a freely traded commodity that must meet certain government specifications. It flows through common pipelines into commingled storage tanks” (Blumberg). Although brands of gasoline have major differences, those differences are not due to origin or refining process, since they are processed from crude oil into gasoline together. The difference in the brands comes late …

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Risk Perception In Aviation Students: Weather Matters, Ric Ferraro Phd, Darci Vandyke, Mary Zander, Krista Anderson, Bethany Kuehlen Jan 2015

Risk Perception In Aviation Students: Weather Matters, Ric Ferraro Phd, Darci Vandyke, Mary Zander, Krista Anderson, Bethany Kuehlen

International Journal of Aviation, Aeronautics, and Aerospace

Sixty-three aviation major students and 71 non-aviation major students participated in an experiment concerning aviation experience and risk perception (Risk Perception Scale, RPS; Hunter, 2002). Non-aviation students rated three of the RPS risk scenarios (P2Fly, P2Life, P2 Base) as having higher perceived risk than aviation students with the exception of the weather risk scenarios (P2WX). Aviation students perceived the P2WX scenarios to be significantly more risky. These results have implications for how future pilots perceive risk.

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