bluuebunny/crossref_metadata_2025 huggingface dataset:
Low Threshold Room Temperature Amplified Spontaneous Emission in 0D, 1D and 2D Quantum Confined Systems
Authors: Chhantyal Parva , Naskar Suraj , Birr Tobias , Fischer Tim , Lübkemann Franziska , Chichkov Boris N. , Dorfs Dirk , Bigall Nadja C. , Reinhardt Carsten
Published: February 2018

We address optical amplification properties of quantum nanoparticles of the cadmium selenide/cadmium sulfide (CdSe/CdS) material system with different dimensionality of spatial confinement. CdSe/CdS core/shell quantum dots (QDs), core/shell quantum rods (QRs) and 5 monolayer thick core/crown nanoplatelets (NPLs) at ambient temperature are considered, exhibiting 0D, 1D and 2D spatial confinement dimensionality of the electronic system, respectively. Continuous films of all these nanoparticles are synthesised, and amplified spontaneous emission (ASE) spectra are measured under femtosecond pumping at wavelengths of 400 nm and 800 nm, respectively. The lowest threshold is found for NPLs and the highest for QDs, demonstrating the influence of the rod-like and plate-like CdS structures. To emphasize this effect, ASE is demonstrated also in CdSe/CdS QRs and NPLs under nanosecond pumping at 355 nm in the same material films. The amplification has been achieved without use of any feedback structure, emphazising the efficiency of the antenna effect. The pumping threshold fluences for NPLs and QRs are observed to be similar, but no ASE is observed in QDs up to the damage threshold of the nanoparticle layers. The length variation investigation with nanosecond pumping resulted in the gain coefficients of 29 cm−1 and 37 cm−1 for QRs and NPLs, respectively.
Towards active macro–mesoporous hydrotreating catalysts: synthesis and assembly of mesoporous alumina microspheres
Authors: Dong Yunyun , Yu Xiang , Zhou Yao , Xu Yingrui , Lian Xinyi , Yi Xiaodong , Fang Weiping
Published: February 2018

Stable macro–mesoporous alumina formed via a pore-directing-agent-free molding process shows promise for the hydrotreatment of heavy oils.
Circular reuse of bio-resources: the role ofPleurotusspp. in the development of functional foods
Authors: Lavelli Vera , Proserpio Cristina , Gallotti Francesca , Laureati Monica , Pagliarini Ella
Published: February 2018

Pleurotusspp. grown on clean processing by-products is an ingredient that links food sustainability with functionality.
Hydro-nanofibrous mesh deep cell penetration: a strategy based on peeling of electrospun coaxial nanofibers
Authors: Son Y. J. , Kim H. S. , Mao W. , Park J. B. , Lee D. , Lee H. , Yoo H. S.
Published: February 2018

Improving cell infiltration in electrospun nonwoven nanofibrous mesh by peeling off sheath fiber and retaining hydrophilic core fiber.
Interaction of spin-labeled HPMA-based nanoparticles with human blood plasma proteins – the introduction of protein-corona-free polymer nanomedicine
Authors: Klepac Damir , Kostková Hana , Petrova Svetlana , Chytil Petr , Etrych Tomáš , Kereïche Sami , Raška Ivan , Weitz David A. , Filippov Sergey K.
Published: February 2018

The classical “hard corona–soft corona” paradigm is not valid for HPMA-based nanoparticles.
Complimentary effects of annealing temperature on optimal tuning of functionalized carbon–V2O5 hybrid nanobelts for targeted dual applications in electrochromic and supercapacitor devices
Authors: Narayanan Remya , Dewan Anweshi , Chakraborty Debanjan
Published: February 2018

Herein, carbon nanosphere-decorated vanadium pentoxide (C@V2O5) hybrid nanobelts were grown via a single step hydrothermal route with improved electronic conductivity as compared to that of pristine oxide.
Methionine-based cationic polypeptide/polypeptide block copolymer with triple-stimuli responsiveness: DNA polyplexation and phototriggered release
Authors: Jana Somdeb , Biswas Yajnaseni , Mandal Tarun K.
Published: February 2018

This work describes the synthesis of a multi-stimuli responsive methionine-based cationic polypeptide and its polypeptide block copolymer, followed by subsequent DNA polyplexation and phototriggered release.
Oxide-assisted growth of scalable single-crystalline graphene with seamlessly stitched millimeter-sized domains on commercial copper foils
Authors: Wang Yang , Cheng Yu , Wang Yunlu , Zhang Shuai , Zhang Xuewei , Yin Shaoqian , Wang Miao , Xia Yang , Li Qunyang , Zhao Pei , Wang Hongtao
Published: February 2018

Chemical vapor deposition is used for the growth of scalable single-crystal graphene by seamlessly stitching millimeter-sized aligned hexagonal domains on different types of commercial Cu foils, without repeated substrate polishing and H2annealing.
A highly active worm-like PtMo nanowire for the selective synthesis of dibenzylamines
Authors: Lu Shuanglong , Xu Pengyao , Cao Xueqin , Gu Hongwei
Published: February 2018

An efficient synthetic pathway of dibenzylamine (DBA) motifs from reductive amination of either aldehydes or nitriles catalyzed by highly active worm-like PtMo nanowires.
Correction: Comparative pharmacokinetics of four active components on normal and diabetic rats after oral administration of Gandi capsules
Authors: Xu Renjie , Qi Jia , Zhan Ruan-Juan , Zhou Gui-Sheng , Hao Bin , Ma Jing , Wei Xin , Xu AJing , Zhang Jian
Published: February 2018

Correction for ‘Comparative pharmacokinetics of four active components on normal and diabetic rats after oral administration of Gandi capsules’ by Renjie Xu et al., RSC Adv., 2018, 8, 6620–6628.
Correction: Preparation of magnesium silicate/carbon composite for adsorption of rhodamine B
Authors: Sun Zhiwei , Duan Xinhui , Srinivasakannan C. , Liang Jinsheng
Published: February 2018

Correction for ‘Preparation of magnesium silicate/carbon composite for adsorption of rhodamine B’ by Zhiwei Sun et al., RSC Adv., 2018, 8, 7873–7882.
Dynamics in Bi(iii)-containing apatite-type oxide ion conductors: a combined computational and experimental study
Authors: Peet J. R. , Chambers M. S. , Piovano A. , Johnson M. R. , Evans I. Radosavljevic
Published: February 2018

Introduction of Bi(iii) into apatite-type germanate solid electrolytes can facilitate oxide ion diffusion.
Structured Review of Dichotic Tests of Binaural Integration: Clinical Performance in Children
Authors: Kelley Kairn Stetler , Littenberg Benjamin
Published: February 2018

Purpose

The aim of the study was to evaluate the evidence of clinical utility for dichotic speech tests of binaural integration used to assess auditory processing in English-speaking children 6–14 years old.

Method

Dichotic speech test recordings and pertinent research studies were identified from iterative searches of the Internet and bibliographic databases, as well as communication with colleagues and test publishers. Test documentation and peer-reviewed literature were evaluated for evidence of reliability, accuracy, usefulness, and value.

Results

Eleven dichotic tests of binaural integration were identified for children. Evidence of test–retest reliability was found for 5 tests and demonstrated moderate to good correlation between results on repeated administration (r= .59–.92). Evidence of accuracy was identified for 5 tests but was either inconsistent with accurate performance or was not generalizable due to significant limitations in study design. No evidence was found to either support or dispute claims of usefulness or value.

Conclusions

A medical diagnostic framework is useful for evaluating dichotic tests. Although dichotic procedures show moderate reliability, the absence of a widely accepted gold standard reference test limits our ability to assess their value. Overall, the data available at the time of this review do not support the routine use of dichotic tests of binaural integration for clinical evaluation of children.
Synthesis of A Sustainable Sago-Based Value Chain via Fuzzy Optimisation Approach
Authors: Chong Jeffrey Hong Seng , Wan Yoke Kin , Andiappan Viknesh
Published: February 2018

Sago starch is one of the staple foods for human, especially in Asia’s Region. It can be produced via sago starch extraction process (SSEP). During the SSEP, several types of sago wastes are generated such as sago fiber (SF), sago bark (SB) and sago wastewater (SW). With the increase in production of existing factories and sago mills, the sago industrial practice in waste disposal management is gaining more attention, thus implementation of effective waste management is vital. One of the promising ways to have effective waste management is to create value out of the sago wastes. In a recent study, sago-based refinery, which is a facility to convert sago wastes into value-added products (e.g., bio-ethanol and energy) was found feasible. However, the conversion of other value added products from sago wastes while considering the environmental impact has not been considered in sago value chain. Therefore, an optimum sago value chain, which involved conversion activities of sago wastes into value-added products, is aimed to be synthesised in this work. The optimum sago value chain will be evaluated based on profit and carbon emissions using fuzzy-based optimisation approach via a commercial optimisation software, Lingo 16.0. To illustrate the the developed approach, an industrial case study has been solved in this work.
Parametric Study for Devulcanization of Waste Tire Rubber Utilizing Deep Eutectic Solvent (DES)
Authors: Walvekar Rashmi , Kunju Kishen , Saputra Ricky , Siddiqui Khalid , Ramarad Suganti
Published: February 2018

Waste rubber is a polymeric material containing 50% of rubber and is generally referred to as waste tyre rubber. The main purpose of this research is to study ultrasonic devulcanisation of waste rubber utilising deep eutectic solvent (DES) of ZnCl2:Urea by improving process parameters such as sonication time, reaction temperature and rubber: DES mass ratio by effectively cleaving cross-link sulphur bonds. DES was created and prepared by mixing ZnCl2 with urea at 2:7 and 1:4 molar ratios respectively. Physicochemical properties of the prepared DES was measured using DSC, KFT and TGA analysis to find the freezing point, moisture content and degradation temperature, whereby their freezing point below 60°C, moisture content lower than 3.0 wt.% and 200°C degradation temperature average. Rubber to DES mass ratio was varied at 1:20, 1:30 and 1:40 and sonicated for 15 minutes inside ultrasonic water-bath. Samples were placed onto hot plate whereby heating temperature was varied at room temperature, 130°C, 150°C, and 180°C for 15 minutes. Samples were filtered, washed with distilled water and dried in oven for 24 hours. Once dried, samples were taken for analysis using TGA, EDX, FESEM, FTIR and Gel content. Under TGA analysis, most samples have an average degradation temperature of 200°C, hence justifying a successful devulcanisation. EDX analysis shows two occurrences during devulcanisation process which is bond reformation and cleavage. Furthermore, it is determined that heating temperature of 130°C is an important parameter as it is the optimum temperature for ZnCl2:Urea. Under FTIR analysis, it shows that disulphide bond, S-S is the only bond that is being broken while the rest still remains the same. Gel content analysis showed that samples have a lower soluble fraction after devulcanisation process. Finally, FESEM proves that at 130°C and 15 minutes is the optimum temperature and time which is illustrated by the smooth surface at that particular point.
Synthesis and Optimisation of A Sustainable Wastewater Treatment Plant via Material Flow Cost Account (MFCA)-based Approach
Authors: Siew Run Ting , Wan Yoke Kin , Andiappan Viknesh
Published: February 2018

In this work, MFCA-based approach has been developed to synthesise an optimum wastewater treatment plant (WWTP). To develop the approach, a series of mathematical equations have been generated based on a generic superstructure that presented all possible pathways of WWTP. In this work, four continuous treatment stages (pre-treatment, chemical treatment, biological treatment and tertiary treatment) with various treatment technologies have been considered. In addition, raw material cost, energy cost, labour cost, and waste management cost as well as the hidden cost and carry-forward cost have also been considered in this approach. In this work, hidden cost is referred to the cost that associated with the process stream, while the carry-forward cost is referred to the cost that is carried forward from one process to another process. Furthermore, pollutants (e.g., TSS, COD, BOD and O&G) have also been considered to ensure the discharged water is complied with discharged regulations. To illustrate the developed approach, an industrial case study, has been solved. As results, an optimum sago wastewater treatment process with minimum waste generation cost is synthesised via a commercial optimisation software, LINGO.
Process Debottlenecking and Retrofit of Palm Oil Milling Process via Inoperability Input-Output Modelling
Authors: May Tan May , Andiappan Viknesh , Wan Yoke Kin
Published: February 2018

In recent years, there has been an increase in crude palm oil (CPO) demand, resulting in palm oil mills (POMs) seizing the opportunity to increase CPO production to make more profits. A series of equipment are designed to operate in their optimum capacities in the current existing POMs. Some equipment may be limited by their maximum design capacities when there is a need to increase CPO production, resulting in process bottlenecks. In this research, a framework is developed to provide stepwise procedures on identifying bottlenecks and retrofitting a POM process to cater for the increase in production capacity. This framework adapts an algebraic approach known as Inoperability Input-Output Modelling (IIM). To illustrate the application of the framework, an industrial POM case study was solved using LINGO software in this work, by maximising its production capacity. Benefit-to-Cost Ratio (BCR) analysis was also performed to assess the economic feasibility. As results, the Screw Press was identified as the bottleneck. The retrofitting recommendation was to purchase an additional Screw Press to cater for the new throughput with BCR of 54.57. It was found the POM to be able to achieve the maximum targeted production capacity of 8,139.65 kg/hr of CPO without any bottlenecks.
Design and Optimisation of Home Scale Greywater Recycling Package
Authors: a/l Arugam Kalaichelvan , Ghadimi Azadeh , Chang LH
Published: February 2018

Water crisis is becoming one of the biggest challenges in some countries due to over population and drought. Therefore, government and non-government organisations in well-developed countries are encouraging industries to install water recycling package to reduce water usage and consume greywater instead. However the home scale is not yet available in the market. This research focuses on design a home scale greywater treatment system for toilet flushing within 3,000 to 5,000 USD as a collaboration with DD Techniche Sdn Bhd. Greywater is the waste water produced from laundry, kitchen and bathroom except the toilet waste and contains suspended solids, microorganisms, oil, nitrates and phosphorus which needs to be treated using suitable types of treatment for safe reuse. The treatments include physical, chemical and biological water treatment in which in this study the proposed system is a combination of all three. The design is evaluated using experimental methods to meet the standard of toilet flushing quality. The greywater system consists of the mechanical parts to control the flow of greywater and store the treated water including pumps, sand filtration tank, wire mesh chassis and collection tank. The final design has dimension of 6 m3 and optimised price within the budget.
Operational Research on Design and Process Optimization of Ozone Water Application in Kitchen
Authors: Lee Zhun Jing , Chou Pui May , Hoo Choon Lih , Lu Daniel
Published: February 2018

Food safety is a very important focus in the kitchen industry today, as bacteria such as E.Coli and Salmonella are very difficult to tackle. The objective of the present study was to optimize nozzle designs that use ozone technology to bring out the best results in cleaning and sterilizing the kitchen utensils in Taylor’s University School of Hospitality kitchen area. This includes customization of the Medklinn International Sdn Bhd ozone machine and nozzle profiles that improve the effectiveness of ozone generated. Reduction or elimination of chemicals and water usage would be a part of the study. This will bring a huge impact on cost effectiveness, time saving and safety of the users. Return on investment (ROI) using ozone technology is calculated at the end of the research. To compare between the traditional way of cleaning and using ozone technology, the volume of water and dishwashing liquid used, and the Relative Light Units (RLU) before and after washing were recorded. The RLU numbers are found using the 3M Clean Trace measuring equipment. RLU was recorded to determine the cleanliness of the kitchen utensils before and after washing. It has been proved that ozone water with the accompaniment of the selected nozzle prototype is as efficient as the traditional way of cleaning.
Evaluation of SIPIC01 and SIPIC02 on Motor Speed Control
Authors: Wong Kah Kit , Hoo Choon Lih , Mohyi Mohd Hardie Hidayat
Published: February 2018

Due to its simplicity, Proportional-Integral (PI) controller still remains as the widely used controller for motor speed control system. However, PI controller exhibits windup phenomenon when the motor operates in a saturated state, which may cause degradation to the control system. In order to overcome the windup phenomenon, many researches have introduced various types of anti-windup methods such as the Conditioning Technique (CI), Tracking Back Calculation (TBC), Integral State Prediction (ISP), Steady-state Integral Proportional Integral Controller-01 (SIPIC01) and Steady-state Integral Proportional Integral Controller-02 (SIPIC02). These are anti-windup techniques with integral control switching mechanism, coupling of proportional gain, kp, and integral gain, ki. Due to the coupled kp and ki, tuning motor performance is a difficult task with short settling time without experiencing overshoot. SIPIC01 and SIPIC02 are robust anti-windup methods without a switching mechanism and exhibit decoupling feature. SIPIC01 and SIPIC02 have shown better dynamic performance compared to CI, TBC and ISP. However, SIPIC01 has not been compared to SIPIC02 in terms of their decoupling effect flexibility and dynamic performance. The decoupling effect was verified using MATLAB simulation, while the performance analysis was verified through hardware simulation and testing by using Scilab. The results obtained from the simulation showed that both SIPIC01 and SIPIC02 consist of decoupling features that allow a performance with coexistence of zero or minimum overshoot with short settling time. However, SIPIC02 consists of longer rise and settling time as compared to SIPIC01. Therefore, it can be concluded that SIPIC01 is better than SIPIC02 in term of dynamic performance.
Sintered Properties of Stainless Steel-doped Y-TZP Ceramics
Authors: Chew Wai Jin Kelvin , Minggat Mervyn Marlon Anak Mathew , Singh Ramesh
Published: February 2018

Yttria stabalised Tetragonal Zirconia Polycrystalline (Y-TZP) has been extensively renowned for its vast outstanding contribution in medical field such as primary function for implant biomaterial which acts as restoration of damaged body parts. Nonetheless in the past decades, there have been various reported cases that point the failure of hip transplants involving material of zirconia ceramic. This eventually leads to the birth of this research project where it studied the properties effects of Y-TZP as it was added or doped with stainless steel 316 (SS316). In this research project, the parameter of weight percentage for stainless steel 316 (SS316) to be doped with Y-TZP were as follows; 0 wt%, 0.1 wt%, 0.5 wt% and 1 wt%. The outcome of this experiment then were measured and analysed as according to properties of relative density, Vickers hardness and fracture toughness. The experiment was conducted by firstly mixed the Y-TZP and SS316 powders together as according to the weight percentage of SS316 as well as addition of ethanol solution that act for medium of enhancement. The mixture then underwent compacting pressure bench press as well as Cold Isostatic Pressure (CIP) in order to produce the green sample. After that, the green sample underwent sintering process via pressureless sintering method at mentioned ranges temperature of 1250°C, 1300°C, 1400°C and up to 1500°C. Subsequently, the sample then underwent grinding and polishing process before proceeding to the measurement and analysis process. The outcome of the measurement and analysis process revealed that as the content of SS316 doped with Y-TZP increases as well as the increased in sintering temperature, the relative density and fracture toughness profound to be increased while Vickers hardness indicated as decreased.
Lift and Drag of Non-conventional Wings at Subsonic Speeds and Zero Angle of Attack - An Experimental Investigation
Authors: Al-Obaidi Abdulkareem Shafiq Mahdi , Wei Ting Chern
Published: February 2018

Various non-conventional wing development shows potential in increasing the aerodynamic performance of airplanes. If the non-conventional wing only improves the aerodynamic performance by a small margin, conventional wing is still a better option for airline operators. This provides opportunity to continue research on non-conventional configurations that can greatly saves the fuel consumption. This research was conducted to examine the lift and drag of non-conventional wings at low subsonic speed and low angle of attack. Analytical method based on DATCOM was used to calculate the lift and drag coefficients of non-conventional cranked wing for comparison with experimental results obtained experimentally using Taylor’s wind tunnel (TWT). Experimental lift coefficient shows similar values with the analytical results but experimental drag coefficient had an average difference of 44%. The experimental setup and calibration of TWT were verified and further case studies on nonconventional wing model featuring trailing edge notches were carried out. Analysis of the results from case studies shows that generally the effect of varying the number of notches only had significant effect on drag reduction if the notch depth was higher. For flight condition that does not exceed 4° angle of attack, lower number of notches at higher notch depth had the best aerodynamic performance. On the other hand, for flight condition that requires cruise angle of attack that exceeds 4°, higher number of notches at higher notch depth had the best aerodynamic performance.
In-situ Study of Seating Static Comfort in Passenger Vehicles
Authors: Seraj Umi Salmah , Aladdin Mohd Farid
Published: February 2018

In today’s automotive market, comfort is huge selling point of a vehicle. Priority is given by buyers to how comfortable a seat feels during purchase decisions. The measure of comfort is harmonious mix of many aspects such as human ergonomics and physiological factors. However, a gap still exists between objective and subjective measures due to lack of emphasis by past researchers. This is particularly obvious in the lumbar support feature that has still not been able to address the health problems related to driving. This project focuses on bridging the gap by giving users the ability to define true preferred posture in realistic settings. This is done by the creation of a apparatus that allows users to individually manipulate the seat contour for optimum support in more segments than just lumbar area. The experiment is performed in 3 parts, where in each part different segments of the apparatus are manipulatable (lumbar segment, sacral & thoracic segment, and all segments). Sixty human subjects’ statistics are recorded (gender, age, BMI and height) and the subjects are palpated to locate internal joints. These joints are marked and postural angles between them are measured using a goniometer. In each seat configuration, the angles are measured and a comfort rating is taken to be compared. It was found that the posture angles are different among the 3 experiments, and there is a change in comfort felt. Some human factors have also been proven to contribute heavily to angles chosen by occupants.
Anti-windup PI controller, SIPIC For Motor Position Control
Authors: Wong Kah Kit , Hoo Choon Lih , Mohyi Mohd Hardie Hidayat
Published: February 2018

Control system plays a major role in the industry nowadays as it simplifies workload and reduce manpower. Among all the controlled applicable field, control system is heavily used in motor speed and motor position controls. Although there are various types of controllers available in the market, PID controller remains as one of the most used controller due to its simplicity. Unfortunately, PID controller experiences windup phenomenon which affects the controller’s performance. This paper proposes a new type of anti-windup PI controller, SIPIC for motor position control application and aims to validate the performance of this controller as compared to conventional PI controller. To test the ability of the controllers, both controllers were experimented using hardware testing. The settings conditions of with and without loadings were used under two different inputs of 0° to 90° and 270° to 90°. The results obtained show that under without loadings, both controller showed favourable performances. Though, SIPIC controller slightly outperforms PI controller by having lower overshoot and shorter settling time for a wider range of gains. The rise time of both controllers are similar as it is the lowest possible rise time due to hardware limitations. Experiment results with loading condition, for both inputs and when Kp is 1 and Ki is 15, PI controller shows unstable performance by having large amount of oscillations and overshoots. The settling time was unable to be determined as the controller did not settle within the given step time. On the other hand, at the same gain, SIPIC controller still shows acceptable performance. This shows that SIPIC controller is more favourable by having better stable performance for a wider range of gains while PI controller needs to be finely tuned to a specific gain to obtain desired results..
Design and Fabrication of Small Vertical-Take-Off-Landing Unmanned Aerial Vehicle
Authors: Abd Rahman Yasir Ashraf , Hajibeigy Mohammad Taghi , Al-Obaidi Abdulkareem Shafiq Mahdi , Cheah Kean How
Published: February 2018

Modern UAVs available in the market have well-developed to cater to the countless field of application. UAVs have their own limitations in terms of flight range and manoeuvrability. The traditional fixed-wing UAVs can fly for long distance but require runways or wide-open spaces for take-off and landing. On the other hand, the more trending multirotor UAVs are extremely manoeuvrable but cannot be used for long-distance flights because of their slower speeds and relatively higher consumption of energy. This study proposed the implementation of hybrid VTOL UAV which has the manoeuvring advantage of a multirotor UAV while having the ability to travel fast to reach a further distance. The design methodology and fabrication method are discussed extensively which would be followed by a number of flight tests to prove the concept. The proposed UAV would be equipped with quadcopter motors and a horizontal thrust motor for vertical and horizontal flight modes respectively.
Magnetic Geared Radial Axis Vertical Wind Turbine for Low Velocity Regimes
Authors: Wei Wei Teow , Aravind CV
Published: February 2018

In the 21st century, every country is seeking an alternative source of energy especially the renewable sources. There are considerable developments in the wind energy technology in recent years and in more particular on the vertical axis wind turbine (VAWT) as they are modular, less installation cost and portable in comparison with that of the horizontal axis wind turbine (HAWT) systems. The cut-in speed of a conventional wind turbine is 3.5 m/s to 5 m/s. Mechanical geared generators are commonly found in wind technology to step up power conversion to accommodate the needs of the generator. Wind turbine gearboxes suffer from overload problem and frequent maintenance in spite of the high torque density produced. However, an emerging alternative to gearing system is Magnetic Gear (MG) as it offers significant advantages such as free from maintenance and inherent overload protection. In this project, numerical analysis is done on designed magnetic gear greatly affects the performance of the generator in terms of voltage generation. Magnetic flux density is distributed evenly across the generator as seen from the uniform sinusoidal output waveform. Consequently, the interaction of the magnetic flux of the permanent magnets has shown no disturbance to the output of the generator as the voltage generated shows uniform waveform despite the rotational speed of the gears. The simulation is run at low wind speed and the results show that the generator starts generating a voltage of 240 V at a wind speed of 1.04 m/s. This shows great improvement in the operating capability of the wind turbine.
A Study on the Used of Bluetooth Detectors at a Fix Location for Vehicle Speed Estimation
Authors: Neow Way Shyun , Chung Edwin C.Y.
Published: February 2018

Usage of Bluetooth for traffic monitoring has been widely researched and well understood. By placing a Bluetooth detector at each end of a segment of a road; the time difference when a Bluetooth device, traveling in a vehicle through that segment, is observed by these detectors is taken to be the time taken by the vehicle to travel along that known segment. The known distance between the detectors and the time it takes to traverse this distance makes it possible to estimate the average speed of the vehicle along that segment. The possibility of estimating the average speed of vehicles within the radio range of a Bluetooth detector, however, has not be carried out until now. The premise of this research is to determine the time a Bluetooth device takes to traverse through the radio range of a detector and from this estimation of the speed of the vehicle traveling through the radio range of the detector. The usage of multiple detectors at the same point to improve the accuracy of the estimates is also investigated. The results of our experiments and what is need to realise such a system are discussed.
Linking Liberatory Pedagogy to Engineering and Sustainable Development
Authors: Moganakrishnann Jayasubamani Arvi S. , Namasivayam Satesh Narayana , Ismail NurHazwani
Published: February 2018

This paper is written to link liberatory pedagogy with engineering education and sustainable development Its application to specifically, design education for community is explored through deconstructing of engineering student narratives to place understanding of power and privilege in a specific learning setting. The use of liberatory pedagogy for design education and SD is attempted where there is need of changes in understanding of learning outcomes for SD aimed at producing of sustainable physical products to address SD problems in community-based projects. We argue against the simple-minded approach of producing physical products and undermine the intersections of other knowledge forms within the community context. Without pedagogic intervention, we undermine other knowledge forms and cultures in its importance amidst technical knowledge seen as which is valid for SD. Extending liberatory pedagogy to constructivists’ perspective we discuss the importance of intervention in the broader image of the engineer as the technical expert who share knowledge in partnership for SD.
Fuel Analysis of Jatropha Methyl Ester and n-Tridecane as an Alternative Fuel for the Future
Authors: Bhikuning Annisa , Matsumura Eriko , Senda Jiro
Published: February 2018

The authors proposed for new fuel between blending of jatropha methyl ester and n-tridecane. Biodiesel has an advantage in reducing emissions. Nevertheless, it has high viscosity and density and has poor spray characteristics compared to diesel fuel. The blending between n-tridecane would overcome the unwanted fuel properties. The n-tridecane and jatropha methyl ester were blended under three condition; JME25% (Jatropha Methyl Ester 25% and n-tridecane 75%), JME50% (Jatropha Methyl Ester 50% and n-tridecane 50%), and JME75% (Jatropha Methyl Ester 75% and n-tridecane 25%). The fuel properties were analyzed under biodiesel standardization from JIS K and ASTM D. FTIR analyzed also showed the characteristics of carbonyl peak that indicates as methyl ester. In the results, JME50% had met the requirements for fuel properties from biodiesel standardization.
Simulation Investigation on Application of Powder Metallurgy Damping Effect in Water Hydraulic Pump
Authors: Shi Weijie , Luo Xiaohui , Zhang Zuti , Wang Huawei , Zhu Yuquan
Published: February 2018

Over the years, the hydrostatic balance slipper is often used to make the hydraulic lubrication film formed between the swash plate and the slipper. In this paper, a slipper containing the powder metallurgy (PM) composite material is proposed. The porous characteristics have an automatic damping effect, which can improve the tribological characteristics of the slipper. Based on the Reynolds equation, porous Darcy law and continuity equation, a lubrication model of PM damper is proposed to analyze the damping effect of PM in this paper. The proposed model is calculated using the finite volume method to capture the water film characteristics. Effects of length, diameter and porosity of the PM damper on the water film thickness are investigated. The results show that the water film can be formed by adopting the PM damper. In order to ensure the slipper with PM damper to form hydrostatic support, the length, diameter and porosity of PM damper is recommended to be 5 mm, 8 mm and 0.7, respectively.
Visual Servoing of Mobile Microrobot with Centralized Camera
Authors: Kiswanto Gandjar , Safhire Mohamad , Afrianto Reza , Nurcahya Rifkie
Published: February 2018

In this paper, a mechanism of visual servoing for mobile microrobot with a centralized camera is developed. Especially for the development of swarm AI applications. In the fields of microrobots the size of robots is minimal and the amount of movement is also small. By replacing various sensors that is needed with a single centralized vision sensor we can eliminate a lot of components and the need for calibration on every robot. A study and design for a visual servoing mobile microrobot has been developed. This system can use multi object tracking and hough transform to identify the positions of the robots. And can control multiple robots at once with an accuracy of 5-6 pixel from the desired target.
Structure Design and Dynamical Modelling of a Spherical Robot Driven by Omnidirectional Wheels
Authors: Huang Yonghua , Zhu Ganmin , Wang Changsheng , Huang Hao
Published: February 2018

In this paper, our work focused on designing a novel spherical robot driven by omnidirectional wheels and developing an under-actuated dynamical model for the system. The robot consists of four parts: the running spherical shell (1P), the supporting platform (1P), the driving omnidirectional wheels (3P) and the bearing ball wheels (3P). Considering the noholonomic constrains aroused from the contacts of the shell with the omnidirectional wheels, and the shell with ground, we derived a dynamical model for the system by Chaplygin dynamics. The model illustrated that the robot was an under-actuated system of six DOF (degree of freedom) and three driving-torque inputs. finally, we performed an inverse dynamics simulations of S-curve trajectory to show the effectiveness of the model.
Optimization on the Law of Variable-Pitch Vertical-Axis Tidal Current Turbine
Authors: Fankai Kong , Liying Wang , Di Zhang
Published: February 2018

In order to improve the hydrodynamic performance of the vertical-axis variable-pitch current turbine, with analyzing on the existing design mentality of blade control mechanism, an optimized law of variable-pitch vertical-axis tidal current turbine was given in terms of the instantaneous moment coefficient of the blade. A method for solving the lift - drag coefficient of Blade by wind - hole test data is given. The optimized kinematic model has a significant reference value for the further development of vertical axis turbine model test.
Modeling of the kinematic geometry of spur gears using matlab
Authors: Anakhu Peter I. , Abioye Abiodun A. , Bolu Christian A. , Azeta Joseph
Published: February 2018

The analytical method of gear design is calculation-intensive and it is usually difficult to achieve optimum backlash and interference-free involute profile that are required to generate geometrical compatibility in a pair of meshing gears when design procedure is entirely based on this method. Some amount of backlash is often required in the assembly of gears but excess backlash can lead to increase vibration and wear of the gear assembly. Also, interference-risk profile can result in undercutting of gear tooth. This paper optimized a spur external involute-profile gear by developing an application for the modeling of its geometrical compatibility using Matlab®. The application uses existing models to test for interference and a proposed model to determine effective backlash in a gear. The backlash values resulting from the application are more confined and the model is applicable to a wider range of modules suggested by American Gear Manufacturers Association. Simulation of the gear-set in Solidworks® for kinematic geometry presents an interference-free tooth contour and an effective backlash.
Torsional Stiffness Comparison of Different Tube Cross-Sections of a Formula SAE Car Space Frame
Authors: Hao Liu Cong , Li Gang , Hao Ma Ying , Yang Xu Guang
Published: February 2018

Since torsional loading and the accompanying deformation of the frame and suspension parts can affect the handling and performance of the car, torsional stiffness is generally thought to be a primary determinant of frame performance for a FSAE car. According to the FSAE Rules, different tube cross-sections are available for some members of a space frame. By finite element simulation, this research compared different tube shapes and thicknesses. Compared with 1.6 mm thickness round tube, square tube with the same wall thickness can improve the torsional stiffness by 23% in test Mode I, and 65% in test Mode II. The 1.2mm thickness square tube also can improve the torsional stiffness by 6% and 39% in test Mode I and Mode II. From these comparisons, it can be found the usage of square tube can improve the frame torsional stiffness efficiently.
Design of an Autonomous Forklift Using Kinect
Authors: Abdellatif Mohamed , Shoeir Metwali , Talaat Omar , Gabalah Mahmoud , Elbably Mohamed , Saleh Saleh
Published: February 2018

Material handling is a necessary, but expensive activity in factories. Autonomous robot technology can help reduce the cost and relax humans from the exhaustive job of driving forklifts. In this paper, we describe the mechatronics design and implementation of an autonomous forklift. The robot can perceive the 3D dynamic world and can plan its motion autonomously to lift materials from a source to target locations. Dynamic map of the world is built using data from a Microsoft Kinect head and readings from wheel encoders, thus enabling the robot to avoid obstacles and reach target locations safely. Experiments showed success of the robot to move and load the cargo to target locations.
Design, Fabrication and Testing of Carbon Fiber Reinforced Epoxy Drive Shaft for All Terrain Vehicle using Filament Winding
Authors: Yeshwant Nayak Suhas , Minil Amin Nishank , Shenoy Heckadka Srinivas , Shenoy P Vishal , Sravan Prakash Ch. , Mabbu Ruthvik
Published: February 2018

Filament winding is a composite material fabrication technique that is used to manufacture concentric hollow components. In this study Carbon/Epoxy composite drive shafts were fabricated using filament winding process with a fiber orientation of [852/±452/252]s. Carbon in the form of multifilament fibers of Tairyfil TC-33 having 3000 filaments/strand was used as reinforcement with low viscosity epoxy resin as the matrix material. The driveshaft is designed to be used in SAE Baja All Terrain Vehicle (ATV) that makes use of a fully floating axle in its rear wheel drive system. The torsional strength of the shaft was tested and compared to that of an OEM steel shaft that was previously used in the ATV. Results show that the composite shaft had 8.5% higher torsional strength in comparison to the OEM steel shaft and was also lighter by 60%. Scanning electron microscopy (SEM) micrographs were studied to investigate the probable failure mechanism. Delamination, matrix agglomeration, fiber pull-out and matrix cracking were the prominent failure mechanisms identified.
Application of Video Recognition Technology in Landslide Monitoring System
Authors: Qingjia Meng , Chenhui Wang
Published: February 2018

The video recognition technology is applied to the landslide emergency remote monitoring system. The trajectories of the landslide are identified by this system in this paper. The system of geological disaster monitoring is applied synthetically to realize the analysis of landslide monitoring data and the combination of video recognition technology. Landslide video monitoring system will video image information, time point, network signal strength, power supply through the 4G network transmission to the server. The data is comprehensively analysed though the remote man-machine interface to conduct to achieve the threshold or manual control to determine the front-end video surveillance system. The system is used to identify the target landslide video for intelligent identification. The algorithm is embedded in the intelligent analysis module, and the video frame is identified, detected, analysed, filtered, and morphological treatment. The algorithm based on artificial intelligence and pattern recognition is used to mark the target landslide in the video screen and confirm whether the landslide is normal. The landslide video monitoring system realizes the remote monitoring and control of the mobile side, and provides a quick and easy monitoring technology.
Research on Ground Calibration Technology for Geomagnetism Sensors
Authors: Hui Zhang , Chuanjun Li , Yukuan Liu
Published: February 2018

The measurements of geomagnetism sensors are often affected by self-factors, install-factors and environment factors, therefore they often exist error and cause measurement accuracy reduction. Focus on these problems, this paper analyse existing ground calibration algorithms and their merits and demerits respectively. Besides, a comprehensive geomagnetism sensor error model is presented. Based on this model, a least square method based ellipsoid fitting calibration and compensation algorithm is presented. The experiment results show that this novel calibration algorithm can effectively restrain and compensate geomagnetism signal measurement error.
Key Issues and Challenges in Developing Integrated Road Networks Infrastructure With Regional Connectivity: A Study Case of Porto-novo in the Republic of Benin
Authors: Boko-haya Dossa Didier , Li Yadong , Liao Xiaoxian , Yao Changrong , Wang Chongjiao , Xiang Qiqi
Published: February 2018

In recent years, with the rapid and continuous increase in traffic demand, a new upsurge in the construction of transport system is being made in Porto-novo. Thus, the problem of how to make modal transport system in this area play its full role and make its helpful to the development of integrated multimodal transportation networks needs to be urgently put forward. Recognizing these needs, this paper systematically addresses key issues and challenges toward developing integrated multimodal national transportation networks in the banded development axis of Abomey-Calavi-Pkota, Cotonou and Porto-novo with an emphasis to regional connectivity. Particularly, the paper addresses issues with the planning process, institutions, governance, strengths and weaknesses, funding and integrated multimodal development.
Exact solutions for the blood flow through a circular tube under the influence of a magnetic field using fractional Caputo-Fabrizio derivatives
Authors: Riaz M.B. , Zafar A.A.
Published: February 2018

In this work, we study the flow of both blood and magnetic particles using Caputo-Fabrizio fractional derivative model approach. The fluid flow through a circular cylinder is influenced by an external magnetic field which is perpendicular to the circular tube and an oscillating pressure gradient. Integral transforms are used to find solutions for the blood and magnetic particle velocities. Comparison of profiles of velocities for different values of α, the impact of physical variables on the dynamics of fluid and magnetic parameters are highlighted graphically.
Numerical approach to fractional blow-up equations with Atangana-Baleanu derivative in Riemann-Liouville sense
Authors: Owolabi Kolade M.
Published: February 2018

In this paper, we consider a numerical approach for fourth-order time fractional partial differential equation. This equation is obtained from the classical reaction-diffusion equation by replacing the first-order time derivative with the Atangana-Baleanu fractional derivative in Riemann-Liouville sense with the Mittag-Leffler law kernel, and the first, second, and fourth order space derivatives with the fourth-order central difference schemes. We also suggest the Fourier spectral method as an alternate approach to finite difference. We employ Plais Fourier method to study the question of finite-time singularity formation in the one-dimensional problem on a periodic domain. Our bifurcation analysis result shows the relationship between the blow-up and stability of the steady periodic solutions. Numerical experiments are given to validate the effectiveness of the proposed methods.
A reliable mixed method for singular integro-differential equations of non-integer order
Authors: Baleanu Dumitru , Darzi Rahmat , Agheli Bahram
Published: February 2018

It is our goal in this article to apply a method which is based on the assumption that combines two methods of conjugating collocation and multiple shooting method. The proposed method can be used to find the numerical solution of singular fractional integro-differential boundary value problems (SFIBVPs)

        Dϑ y(t) + η ∫0t  (t−s)ς−1 y(s) ds = g(t),    1 < ϑ ≤ 2,    0 < ς< 1,    η ∈ ℝ,

where Dϑ denotes the Caputo derivative of order ϑ. Meanwhile, in a separate section the existence and uniqueness of this method is also discussed. Two examples are presented to illustrate the application and further understanding of the methods.