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Articles 55291 - 55320 of 197515

Full-Text Articles in Engineering

Behavior Recognition Combining Regional Optical Flow Features And Temporal Templates, Manyi Wang, Yaling Song, Li Yu, Zhang Liang Sep 2020

Behavior Recognition Combining Regional Optical Flow Features And Temporal Templates, Manyi Wang, Yaling Song, Li Yu, Zhang Liang

Journal of System Simulation

Abstract: A method was proposed to recognize human behavior, which combined the wavelet moments of temporal templates and the speed feature by optical flow. The wavelet moments are not only rotation, translation and scale invariance, but also have the multi-scale characteristics of wavelet. The shape feature of the motion history image and motion energy image can be described. To simple motions, it's effectively, but it can't present the speed information. Regional optical flow was calculated to describe the direction and amplitude features of motion by Lucas-Kanade algorithm. It could make up shortcomings of wavelet moment without speed information. Being …

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Retention Of Amorphous Silica In Rice Hulls At High Temperatures, Takeshi Okutani Sep 2020

Retention Of Amorphous Silica In Rice Hulls At High Temperatures, Takeshi Okutani

Journal of Metals, Materials and Minerals

Rice hulls contain around 20 wt% amorphous silica (rice hull silica). Rice hullsilica containing no potassium impurity crystallized from amorphous silica to cristobaliteat 1300C. When a small amount of MgO or -Fe2O3 or Al2O3 were added to the rice hull silica, the rice hull silica crystallized to cristobalite at 1500C. MgO, -Fe2O3 and Al2O3 diffused to silica as Mg2+, Fe3+ and Al3+ at high temperatures. These ions broke the SiO4 tetrahedron network, so that the amorphous state of rice hull silica was maintained. As sintering occurred at 1500C in rice hull silica mixed with additives such as MgO, the melting …

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Solid Particle Erosive Wear Behaviour Of Flame Sprayed Eva Based Polymeric Coatings, Ekrem Altuncu, Barış Önen Sep 2020

Solid Particle Erosive Wear Behaviour Of Flame Sprayed Eva Based Polymeric Coatings, Ekrem Altuncu, Barış Önen

Journal of Metals, Materials and Minerals

Flame spraying of polymers allows obtaining functional coatings for protecting against wear and corrosion. Among many engineering polymers, the Ethylene-Vinyl Acetate (EVA) copolymer attracts attention with its superior mechanical and chemical properties. EVA, which has high chemical resistance, high impact resistance and mechanical flexibility, high friction coefficient, is among the candidate coating material that can be used in aerospace, automotive, marine, chemical and manufacturing industries to protect metallic surfaces. The use of polymeric coatings in applications is often restricted when large surfaces need to be coated or if the coating needs to be applied in the openair field. Flame spraying …

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Knowledge Based View Of University Tech Transfer—A Systematic Literature Review And Meta-Analysis, Clovia Hamilton, Philbin P. Simon Sep 2020

Knowledge Based View Of University Tech Transfer—A Systematic Literature Review And Meta-Analysis, Clovia Hamilton, Philbin P. Simon

Technology & Society Faculty Publications

Research and technology commercialization at research-intensive universities has helped to develop provincial economies resulting in university startups, the growth of other new companies and associated employment. University technology transfer offices (TTOs) oversee the process of technology transfer into the commercial marketplace and these organizational units can be considered in the context of enabling effective knowledge management. However, what enables productive TTO performance has not been comprehensively researched. Therefore, this research study adopted the knowledge-based view as the theoretical construct to support a comprehensive investigation into this area. This was achieved through employing a systematic literature review (SLR) combined with a …

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Investigation Of Space-Charge-Limited Conduction Mechanisms In Fe3o4-Y-Fe2o3 Based On Sio2/N-Type Si Substrate, Nik Zumaihan Nik Nadia Aina Sep 2020

Investigation Of Space-Charge-Limited Conduction Mechanisms In Fe3o4-Y-Fe2o3 Based On Sio2/N-Type Si Substrate, Nik Zumaihan Nik Nadia Aina

Student Works (2020-2029)

In this work, thin films of functionalized Fe3O4-γ-Fe2O3 NPs deposited on n-type Si substrate was formed by self-assembly. The co-precipitation method was involved to synthesis the bare iron oxide NPs and the particles were altered to optimum pH 12 by using NH4OH. Iron oxide NPs were then undergone modification process with addition of 0.4 g oleic acid and 1.63 mmol functionalization 4-pentynoic acid. For electrical characterization of self-assembled 4-pentynoic acid functionalized Fe3O4-γ-Fe2O3 NPs on SiO2/n-Si substrate, the charge conduction mechanisms were quantitatively investigated and analyzed through the oxides for different heat treatment temperatures (70-300oC). In this study, the Ohm’s Law …

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Tensile And Superelastic Behaviors Of Ti-35nb-2ta-3zr With Gradient Structure, Liqiang Wang, Yingchen Wang, Wei Huang, Jia Liu, Yujin Tang, Ling Zhang, Yuanfei Fu, Lai-Chang Zhang, Weijie Lu Sep 2020

Tensile And Superelastic Behaviors Of Ti-35nb-2ta-3zr With Gradient Structure, Liqiang Wang, Yingchen Wang, Wei Huang, Jia Liu, Yujin Tang, Ling Zhang, Yuanfei Fu, Lai-Chang Zhang, Weijie Lu

Research outputs 2014 to 2021

© 2020 The Authors We investigated the tensile and superelastic behaviors of Ti-35Nb-2Ta-3Zr processed by double-faced friction stir processing that results in a roughly 2 times higher yield strength with an elongation of 37%. The friction stir processed specimens exhibited different superelasticity as loading cycle increased. To assess the strength and deformation of gradient structure, in situ micro compression tests were conducted on stir zone and heat affected zone, revealing higher strength in stir zone and better ductility in heat affected zone. The combination of stir zone and heat affected zone could increase the strength and maintain the ductility of …

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Co2 Curing Efficiency For Cement Paste And Mortars Produced By A Low Water-To-Cement Ratio, Seong Ho Han, Yubin Jun, Tae Yong Shin, Jae Hong Kim Sep 2020

Co2 Curing Efficiency For Cement Paste And Mortars Produced By A Low Water-To-Cement Ratio, Seong Ho Han, Yubin Jun, Tae Yong Shin, Jae Hong Kim

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Curing by CO2 is a way to utilize CO2 to reduce greenhouse gas emissions. Placing early-age cement paste in a CO2 chamber or pressure vessel accelerates its strength development. Cement carbonation is attributed to the quickened strength development, and CO2 uptake can be quantitatively evaluated by measuring CO2 gas pressure loss in the pressure vessel. A decrease in CO2 gas pressure is observed with all cement pastes and mortar samples regardless of the mix proportion and the casting method; one method involves compacting a low water-to-cement ratio mix, and the other method comprises a …

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High Mb Solution Degradation Efficiency Of Fesibzr Amorphous Ribbon With Surface Tunnels, Qi Chen, Zhicheng Yan, Hao Zhang, Lai-Chang Zhang, Haijian Ma, Wenlong Wang, Weimin Wang Sep 2020

High Mb Solution Degradation Efficiency Of Fesibzr Amorphous Ribbon With Surface Tunnels, Qi Chen, Zhicheng Yan, Hao Zhang, Lai-Chang Zhang, Haijian Ma, Wenlong Wang, Weimin Wang

Research outputs 2014 to 2021

© 2020 by the authors. The as spun amorphous (Fe78Si9B13)99.5Zr0.5 (Zr0.5) and (Fe78Si9B13)99Zr1 (Zr1) ribbons having a Fenton-like reaction are proved to bear a good degradation performance in organic dye wastewater treatment for the first time by evaluating their degradation efficiency in methylene blue (MB) solution. Compared to the widely studied (Fe78Si9B13)100Zr0 (Zr0) amorphous ribbon for degradation, with increasing cZr (Zr atomic content), the as-spun Zr0, Zr0.5 and Zr1 amorphous ribbons have gradually increased degradation rate of MB solution. According to δc (characteristic distance) of as-spun Zr0, Zr0.5 and Zr1 ribbons, the free volume in Zr1 ribbon is higher Zr0 …

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Preparation And Characterisation Of Heat Treated Oil Palm-Empty Fruit Bunch/High Density Polyethylene Composites, Nordin Nur Afifah Sep 2020

Preparation And Characterisation Of Heat Treated Oil Palm-Empty Fruit Bunch/High Density Polyethylene Composites, Nordin Nur Afifah

Student Works (2020-2029)

Natural fibre composites (NFCs) are composite materials, in which the reinforcing fibres are derived from renewable and carbon dioxide neutral resources such as wood or plants. NFC can be made by replacing synthetic fibres with various types of natural fibres. Oil palm empty fruit bunch (OPEFB) fibre and oil palm mesocarp fibre are two important types of fibrous materials left in the palm-oil industry. In this study, EFB will be used as a reinforcement to the high-density polyethylene (HDPE). EFB was heat-treated at 180°C using vacuum oven for one hour, extrusion compounded with HDPE at 10%, 20% and 30% weight …

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Trap-Assisted Tunneling Mechanism Of Zirconium Oxynitride (Zron) Thin Film On Silicon Carbide, Krishnamoorthy Nicklaane Sep 2020

Trap-Assisted Tunneling Mechanism Of Zirconium Oxynitride (Zron) Thin Film On Silicon Carbide, Krishnamoorthy Nicklaane

Student Works (2020-2029)

This research is a study on the possibilities of trap-assisted tunneling conduction mechanism in Zirconium Oxynitride (ZrON) after Zirconium (Zr) with thickness 5nm was sputtered on Silicon Carbide (SiC) substrate which then underwent simultaneous nitridation and oxidation in Nitrous Oxide (N2O) for 15 minutes in 4 different ambient temperatures of 400°C, 500°C, 700⁰C, 900°C. Electrical properties of the samples were then characterized by fabricating Al-gate MOS capacitors onto the film surface. Of all 4 samples, sample that was oxidized/nitrided at 500°C demonstrated to have the highest dielectric breakdown (EB) of 5.05 MV/cm and lowest EB was by sample that was …

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Schottky And Poole-Frenkel Conduction Mechanisms In Zron/Sic System, Lusus Vanessa Sep 2020

Schottky And Poole-Frenkel Conduction Mechanisms In Zron/Sic System, Lusus Vanessa

Student Works (2020-2029)

In this work, the conduction mechanisms of Schottky Emission (SE) and Poole–Frenkel (PF) Emission for the ZrON/SiC system with a temperature range between 400 oC to 900 oC were analyzed. Understanding of the conduction charge mechanisms will help to estimate leakage characteristics of the ZrON/SiC system. Based on the J-E plot measured at different temperatures for 15 minutes, the obtained r2 was ranged between 0.90–0.98, which confirmed the data obtained complied with the standard SE model. Furthermore, the data plotted from the Effective Barrier Height Extracted from the SE plot showed the highest values of

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Asymmetric Semiconductor Nanostructures For Particle Manipulation, Jaykob Maser, Joshua Rovey Sep 2020

Asymmetric Semiconductor Nanostructures For Particle Manipulation, Jaykob Maser, Joshua Rovey

Mechanical and Aerospace Engineering Faculty Research & Creative Works

We explore how material selection affects the electromagnetic response of closely positioned asymmetric nanostructures. COMSOL Multiphysics is used to model the system, and the materials studied include gold (Au), gallium arsenide (GaAs), indium tin oxide (ITO), and aluminum zinc oxide (AZO). All materials produce average electric field magnitudes on the order of 10 MV/m. We conclude that the ITO and AZO nanostructures produce the most uniform electric field response over the entire domain of incident wavelengths and that GaAs is least thermally stable in a vacuum environment due to its low heat conductivity.

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Solar Power Forecasting Using Wavelet Transform And Machine Learning Approaches, Abdullah Nor Azliana Sep 2020

Solar Power Forecasting Using Wavelet Transform And Machine Learning Approaches, Abdullah Nor Azliana

Student Works (2020-2029)

Generation of photovoltaic (PV) power is intermittent in nature and integration of PV system into the grid system causes an imbalanced power production and power demand. One of the efforts to reduce this problem is to forecast the generation of solar power in the PV system. Solar power forecasting requires the collection of solar power and meteorological data. Hence, this work collected solar power data and various meteorological data (global radiation, tilted radiation, temperature surrounding, humidity surrounding, PV module/ PV panel temperature and wind speed) from Universiti Teknikal Malaysia Melaka (UTeM). A pre-processing process is carried out to ensure that …

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Determining The Severity Of Obstructive Sleep Apnea (Osa) By Using Numerical Analysis, Ming Lok Ang Sep 2020

Determining The Severity Of Obstructive Sleep Apnea (Osa) By Using Numerical Analysis, Ming Lok Ang

Student Works (2020-2029)

Computational technologies and biomechanical theories have been applied to study upper airway mechanics in obstructive sleep apnea (OSA). In this study, the patient is selected from ENT Department, UMMC, diagnosed with mild to severe OSA. In addition, the patient underwent maxillomandibular advancement (MMA) surgical treatment. Therefore, 3-dimensional modeling software will be used to model the upper airway, based on patient specific geometrical characteristics obtained from medical imaging and computed tomography (CT). Hence, providing an accurate assessment of airflow characteristics. Computational fluid dynamics (CFD) analysis will be combined with upper airway geometries obtained before and after surgical to determine the effects …

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Analysis Of Space-Charge-Limited Conduction Mechanisms In Zron/Sic System, Hasnurashid Nur Hasdyanna Sep 2020

Analysis Of Space-Charge-Limited Conduction Mechanisms In Zron/Sic System, Hasnurashid Nur Hasdyanna

Student Works (2020-2029)

In this study, current conduction mechanism by space-charge-limited conduction (SCLC) and Poole-Frenkel (PF) emission on ZrON/SiC system that was oxidized and nitrided in N2O at various temperatures (400-900˚C) were analysed. The current-voltage (I-V) measurements were performed in Al-gate metal-oxide-semiconductor (MOS) capacitor by sputtering of Al film on top of the film and at the back of the substrate. Then, characterization of electrical properties was done according to two types of bulk-limited conduction, which are space-charge-limited conduction and Poole-Frenkel emission conduction. Space-charge-limited conduction and Poole-Frenkel emission have been systematically evaluated through data analysis method by the fitting of linear regression according …

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Optimized Transconductance Designs To Enhance The Linearity Performance Of Rf Front-End Receiver Circuits In 130 Nm Cmos Technology, Nandini Vitee Sep 2020

Optimized Transconductance Designs To Enhance The Linearity Performance Of Rf Front-End Receiver Circuits In 130 Nm Cmos Technology, Nandini Vitee

Student Works (2020-2029)

Highly linear front-end circuits are greatly desired for wireless receivers to improve the dynamic range. However, intermodulation distortions caused by the non-linear transconductor current limits the linearity of the front-end receiver circuit in CMOS technologies. In addition to the inherent nonlinear effect, the downscaling of CMOS further exacerbates the linearity of the circuit due to lower voltage headroom and high-field mobility. Thus, it is essential to develop effective circuit techniques that can aid linearity enhancement without jeopardizing other preferred performances such as low noise, high conversion gain, and low-power consumption. In this thesis, two different high linear transconductors are presented …

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Hybrid Passive Control System For Seismic Response Mitigation Of Steel Frame Structures, Mohammad Hossein Mehrabi Sep 2020

Hybrid Passive Control System For Seismic Response Mitigation Of Steel Frame Structures, Mohammad Hossein Mehrabi

Student Works (2020-2029)

Large vibration forces such as from seismic excitations can cause structural damage and structural collapse in the case of intense earthquakes. A large number of novel methods and of these techniques has weaknesses and strengths. Several control devices demonstrate a two-step mechanism in which the structure's stiffness is initially raised, and then the of the first vibration period down to a region where the structural response is significantly increased. The main aim of this thesis is to propose a hybrid passive control system comprises of two phases for the seismic retrofit of moment-resisting steel frames. The first phase is a …

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Fractionation And Characterization Of Extracted Lignin From Oil Palm Empty Fruit Bunch Using Synthesized Deep Eutectic Solvents, Tan Yee Tong Sep 2020

Fractionation And Characterization Of Extracted Lignin From Oil Palm Empty Fruit Bunch Using Synthesized Deep Eutectic Solvents, Tan Yee Tong

Student Works (2020-2029)

Deep eutectic solvent (DES), a new generation green solvent has been introduced as an alternative pretreatment solvent due to its ability for lignocellulosic biomass fractionation and lignin extraction. Numerous types of compounds can be adopted as DES constituents, which has resulted in abundant variation of DES with varying properties. Selection of the suitable chemical compound category is therefore essential for optimum DES performance. However, investigation on the performance comparison between the different DES categories is lacking. In addition, despite its widely acknowledged effectiveness in biomass fractionation, the properties of DES-fractionated biopolymers, especially lignin are not well understood. Hence, this project …

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Sustainable Development Competencies For Achieving The Sdgs: Engineering Students And Industry Requirements, Klara Kövesi, Brad Tabas, Christiane Gillet, Una Beagon, Brian Bowe Sep 2020

Sustainable Development Competencies For Achieving The Sdgs: Engineering Students And Industry Requirements, Klara Kövesi, Brad Tabas, Christiane Gillet, Una Beagon, Brian Bowe

Conference Papers

This paper will provide an insight into how French engineering students and employers perceive the competencies needed to meet the UN Sustainable Development Goals (SDG). It draws on the findings of two exploratory focus group studies carried out in the context of the A-STEP 2030 European Project. Our results indicate significant differences in the awareness of sustainability goals among respondents, but a relatively high level of convergence around the skills and competencies that appear most necessary for attaining sustainable development. The respondents considered that technical knowledge and skills were adequately included within French engineering school curricula, yet they felt that …

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Process Improvement And Microbial Characterisation Of Biological Nitrogen Removal For Tropical Wastewater With Low Chemical Oxygen Demand/Nitrogen Ratio, How Seow Wah Sep 2020

Process Improvement And Microbial Characterisation Of Biological Nitrogen Removal For Tropical Wastewater With Low Chemical Oxygen Demand/Nitrogen Ratio, How Seow Wah

Student Works (2020-2029)

Malaysia has one of the most established biological nitrogen removal in wastewater treatment plants (WWTPs) among the developing Southeast Asian countries. The current WWTPs’ design and operating guidelines in Malaysia are mainly derived from other developed countries with more experiences in operating biological nitrogen removal. These design guidelines are good practices for WWTPs in the temperate climate region, but may not be optimal for the local wastewater characteristics and tropical climate in Malaysia. The local wastewater industry is keen to improve the design and operation of WWTPs to reduce the energy consumption and operating cost, which helps to foster a …

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Social Enterprise And Sustainability: Key Factors That Lead To The Successful Establishment Of Sustainable Development Initiatives In Ireland, Gerard Doyle Sep 2020

Social Enterprise And Sustainability: Key Factors That Lead To The Successful Establishment Of Sustainable Development Initiatives In Ireland, Gerard Doyle

Doctoral

International research points to the positive impact that social enterprises with an environmental focus (also referred to as sustainable development initiatives) perform in the transition to low carbon societies. This thesis examines the capacities required for the establishment and maintenance of sustainable development initiatives in Ireland. The thesis is based on five pieces of research which are either published in international peer-reviewed publications or of a publishable standard. One of the published pieces provides an explanatory framework addressing the reasons why the social enterprise sector in Ireland is less developed than in a number of European countries, details a number …

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A Data-Driven Approach For Predicting Nepheline Crystallization In High-Level Waste Glasses, Irmak Sargin, Charmayne E. Lonergan, John D. Vienna, John S. Mccloy, Scott P. Beckman Sep 2020

A Data-Driven Approach For Predicting Nepheline Crystallization In High-Level Waste Glasses, Irmak Sargin, Charmayne E. Lonergan, John D. Vienna, John S. Mccloy, Scott P. Beckman

Materials Science and Engineering Faculty Research & Creative Works

High-level waste (HLW) glasses with high alumina content are prone to nepheline crystallization during the slow canister cooling that is experienced during large-scale production. Because of its detrimental effects on glass durability, nepheline (NaAlSiO4) precipitation must be avoided; however, developing robust, predictive models for nepheline crystallization behavior in compositionally complex HLW glasses is difficult. Using overly conservative constraints to predict nepheline formation can limit the waste loading to lower than the achievable capacity. In this study, a robust data-driven model using five compositional features has been developed to predict nepheline formation. A new descriptor is introduced called the …

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Application Of Quantum-Markov Open System Models To Human Cognition And Decision, Jerome Busemeyer, Qizi Zhang, S. N. Balakrishnan, Zheng Wang Sep 2020

Application Of Quantum-Markov Open System Models To Human Cognition And Decision, Jerome Busemeyer, Qizi Zhang, S. N. Balakrishnan, Zheng Wang

Mechanical and Aerospace Engineering Faculty Research & Creative Works

Markov processes, such as random walk models, have been successfully used by cognitive and neural scientists to model human choice behavior and decision time for over 50 years. Recently, quantum walk models have been introduced as an alternative way to model the dynamics of human choice and confidence across time. Empirical evidence points to the need for both types of processes, and open system models provide a way to incorporate them both into a single process. However, some of the constraints required by open system models present challenges for achieving this goal. The purpose of this article is to address …

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Processing And Properties Of Medium-Mn Trip Steel To Obtain A Two-Stage Trip Behavior, D. M. Field, L. G. Garza-Martinez, D. C. Van Aken Sep 2020

Processing And Properties Of Medium-Mn Trip Steel To Obtain A Two-Stage Trip Behavior, D. M. Field, L. G. Garza-Martinez, D. C. Van Aken

Materials Science and Engineering Faculty Research & Creative Works

Two medium-Mn steels of nominal composition 0.15C-2.0Si-10.5Mn-(0.75, 1.5) Al-0.04Nb-balFe (wt pct) were processed to produce sub-micron grain sizes of 0.65 and 0.80 μm. Mechanical testing was performed in three successive conditions: hot rolled, intercritically annealed, and cold rolled with subsequent intercritical annealing. Intercritical annealing was performed at 923 K for 20 hours. Electron-backscattered diffraction and X-ray diffraction were utilized to characterize the microstructure, consisting of α-ferrite, α-martensite, ε-martensite, and γ-austenite. Microstructural constituents were tracked during tensile deformation, and it was found that both steels exhibited two-stage TRIP with γ-austenite martensitically transforming first to ε-martensite and as strain increased ε-martensite transformed …

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Deformation And Toughness Behavior Of Β -Type Titanium Alloys Comprising C15-Type Laves Phase, C. D. Rabadia, Y. J. Liu, S. F. Jawed, L. Q. Wang, H. Sun, L. C. Zhang Sep 2020

Deformation And Toughness Behavior Of Β -Type Titanium Alloys Comprising C15-Type Laves Phase, C. D. Rabadia, Y. J. Liu, S. F. Jawed, L. Q. Wang, H. Sun, L. C. Zhang

Research outputs 2014 to 2021

Laves phases are effective in tailoring the mechanical properties of alloys used for structural engineering applications. Therefore, it is an emerging research significance to investigate the deformation features of alloys comprising a Laves phase. In this work, the Ti–33Zr–xFe–yCr (x = 5, 7 wt% and y = 2, 4 wt%) alloys were designed in such a way that a Laves phase would form in the investigated Ti–33Zr–xFe–yCr alloys and later, cast by cold crucible levitation melting. All the as-cast alloys exhibit a face-centered cubic C15-type Laves phase along with a dominant β phase. The volume fraction of C15 Laves phase …

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Investigating The Contribution Of Historic Site Interpretation Centers To Meaning Making: The Case Of Bahrain, May Jalal Al Saffar Sep 2020

Investigating The Contribution Of Historic Site Interpretation Centers To Meaning Making: The Case Of Bahrain, May Jalal Al Saffar

Dissertations

This dissertation investigates the role and contribution of the Historic Site Interpretation Centers in the process of meaning-making from the historic site to the visitors, as well as their visiting experience and attendance at the same settings. The Historic Site Interpretation Centers exhibit a unique museum typology dedicated to sites of historical significance, offering a dual mode of interpretation, labeled as ‘in situ’ and ‘in context’. The objective was to evaluate the physical attributes and applied display strategies in conveying meaning from historic sites to visitors and, to explore the resulting stakeholders’ (i.e. service providers and visitors) perception and emotional …

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How Mandatory Stretches Increase Safety In The Workplace, Alec Pitts Sep 2020

How Mandatory Stretches Increase Safety In The Workplace, Alec Pitts

Construction Management

The construction industry is one that revolves around safety. Without safety this industry fails. Jobsite safety keeps companies afloat longer whether it's financially, physically, or even mentally. This senior project dives into the benefits of mandatory stretching prior to each work day. This study also questions contractors and tests the stretches and their results. These benefits include muscle warm ups, increase of focus, added flexibility, increased range of motion, and even mental awareness. The idea of these morning stretches means more upfront costs for less costs later down the road. These stretches are an extra form of insurance when completed …

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Effect Of Motor-Assisted Elliptical Training Speed And Body Weight Support On Center Of Pressure Movement Variability, Farahnaz Fallahtafti, Chase M. Pfeifer, Thad W. Buster, Judith M. Burnfield Sep 2020

Effect Of Motor-Assisted Elliptical Training Speed And Body Weight Support On Center Of Pressure Movement Variability, Farahnaz Fallahtafti, Chase M. Pfeifer, Thad W. Buster, Judith M. Burnfield

Department of Mechanical and Materials Engineering: Faculty Publications

Background: A motor-assisted elliptical trainer is being used clinically to help individuals with physical disabilities regain and/or retain walking ability and cardiorespiratory fitness. Unknown is how the device’s training parameters can be used to optimize movement variability and regularity. This study examined the effect of motor-assisted elliptical training speed as well as body weight support (BWS) on center of pressure (CoP) movement variability and regularity during training. Methods: CoP was recorded using in-shoe pressure insoles as participants motor-assisted elliptical trained at three speeds (20, 40, and 60 cycles per minute) each performed at four BWS levels (0%, 20%, 40%, and …

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Bs News September/October Sep 2020

Bs News September/October

Building Services Engineering

No abstract provided.

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Low Complexity Method Based On Fc-Ce-Slm For Papr Reduction In Ofdm System, Ce Ji, Lijuan Wang Sep 2020

Low Complexity Method Based On Fc-Ce-Slm For Papr Reduction In Ofdm System, Ce Ji, Lijuan Wang

Journal of System Simulation

Abstract: Selected mapping (SLM) algorithm uses Cross Entropy (CE) algorithm to get the most optimal sign sequence so that SLM can make the effect of PAPR Reduction achieve optimum. However, it needs too many times iterative computations, so it will increase the complexity of the algorithm. In order to solve this problem, a fast convergence factor in the CE-SLM algorithm was introduced to make the sampling probability converge to 0 or 1 quickly in the system, which reduced the iterative times of getting the optimal sign sequence. Computer simulation results show that the approved algorithm reduces the iterative times of …

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