bluuebunny/crossref_metadata_2025 huggingface dataset:
Increasing End-of-Life Recovery Profit Using Axiomatic Design Principles: A Case of Mobile Phone Keypad
Authors: Beng Lee Guang , Badrul Omar
Published: July 2015

Application of axiomatic design (AD) for the purpose of enhancing end-of-life recovery potential of a product has been the main focus of this paper. To demonstrate the usage of AD in this particular area, a case study that involves keypad assemblies of mobile phones is presented. The functional requirements (FR) of the two assemblies were defined differently (only Handset 2 involves refurbishment-related FRs). Using evaluation approach presented by Kwak and Kim (2010), it can be observed that when recovery-related requirements are omitted, application of AD produces a keypad assembly that fulfills the FRs derived from customer needs with more complicated product architecture. In contrast, when recovery-related FRs are included during problem definition using axiomatic approach, the disassemblability of the resulted keypad is improved and thus increasing recovery potential in the event of replacing defective keypad, while satisfying product-related FRs.
A Pilot Study of User-Requirements for Building Maintenance Systems in Malaysian Higher Education Institutions
Authors: Zakiyudin Mohd Zulakhmar , Fathi Mohamad Syazli , Rambat Shuib , Tobi Siti Uzairiah , Rajab Nor Aini
Published: July 2015

Abstract - Worldwide, the investment in building maintenance is huge as it represents almost 50% of the total turnover of construction activities. Building maintenance is also categorised as the commonest function listed in facilities management activities. This pilot study explores the current practice of building maintenance management in higher education institutions in Malaysia. Information gathered from semi-structured interviews focuses on different areas of building maintenance practices. The main issue is to identify the user-requirements. The areas of study are to cover the objectives of maintenance departments, maintenance reporting processes, maintenance verification processes and other associated tasks. In addition, this study also looks into the contributions of Information Technology (IT) facilities to maintenance practices. Based on the findings, there will be differences in the maintenance practices among the four universities; empirically, of the 57 elements studied only 30% were similar. Some strengths and weaknesses in the maintenance practices were identified and ways in which IT facilities could help to improve the situation. In the future it is envisioned that good building maintenance practices would be the norm in Malaysia to maximise the benefits that users could expect from their buildings and facilities.
Development of Automated Control System for Kuih Penderam Stamping Machine
Authors: Hassan S. , Hehsan H. , Khairu Kamarudin , Faizal Esa , Sardan Ain Syuhada , Salim Nur Aisyah , Kasmin Ashari
Published: July 2015

It is essential to design a control system for stamping process in Kuih Penderam production. The main problem is how to produce the Kuih Penderam due to high demand but low in energy consumption. The objective of this study is to convert the system of Kuih Penderam stamping process from manual system to automatic system. The system is consists of the software and components to be used. There are few components that have been use on designing the automatic system which is PLC systems, compressor, sensors, connectors and push buttons. The results of the reliability for the system shows that all the LED lights are function when the signal is connected to the PLC system on the circuit in a direct connection. This case show every components testing is working properly.
Review on Current Status of Waste Electric and Electronic Product in Malaysia
Authors: Jaibee Shafizan , Abd Rahim Abd Khalil , Mohamad Fariza , Jamian Saifulnizan , Kiong Sia Chee , Seiji Yokoyama , Muhd Nor Nik Hisyamudin
Published: July 2015

In the last years, there is an increasing acknowledgment of our impact on the environment due to our lifestyle, while the need to adopt a more sustainable approach as to our consumption habits emerges as of particular significance. This trend regards industrial sectors affecting the consumption habits and, especially, electronic industry where the short life cycles and the rapidly developing technology have led to increased e-waste volumes, such as discarded electronic equipment. Waste Electric and Electronic Product or E-waste is referred to all kind of electric and electronic equipments and appliances that is thrown by users. The majority of such elements result in landfills because it is inexpensive disposal option. The E-waste has become a matter of concern because of toxic and hazardous present in electronic goods and if not properly managed. This equipments are a complicated assembly of thousand material, many of which one highly toxic such as brominates substances, toxic gases, toxic metals, biologically active material, acids, plastics and plastics additives. However, their partial recyclability, due to their material composition along with the unavoidable restrictions in landfills, has led to the development of retrieval techniques for their recycling and re-use, highlighting the significance of e-waste recycling, not only from a waste management aspect but also from a valuable materials' retrieval aspect. This paper provides an overview of E-waste generation and management in Malaysia, which, with rapid economic growth and urbanization, is becoming a major social and environmental issue. Thus, major concern for E-waste management in Malaysia has addressed to environmental protection, compared to quantity control. The challenge now is to make the practice effectively in the many different contexts in Malaysia.
Cracking Propagation and Pattern Behaviour of Irregular-Shaped Polyethylene Terephthalate Fibre Reinforced Concrete Beam
Authors: Irwan J.M. , Asyraf R.M. , Othman N. , Koh H.B. , Aeslina A.K. , Annas M.M.K. , Faisal S.K.
Published: July 2015

This paper reports the results on cracking propagation and pattern of reinforced concrete (RC) beam conducted using irregular-shaped Polyethylene Terephthalate (IPET) as a fibre. Three volume fraction of IPET fibre is used namely, 0.5%, 1% and 1.5%. All RC beam specimens are tested under four point loading under flexural capacity behaviour. Prior to structural test, the materials properties which include the compressive and tensile strength test and modulus of elasticity test were determined. The results than are compared with control RC beam. It is found that the RC beam with IPET fibre does not significantly change the behaviour of failure mode, cracking propagation and pattern compared to control RC beam.
The Strength Behavior of Self-Compacting Concrete Incorporating Bottom Ash as Partial Replacement to Fine Aggregate
Authors: Zainal Abidin Norul Ernida , Wan Ibrahim Mohd Haziman , Jamaluddin Norwati , Kamaruddin Kartini , Hamzah Ahmad Farhan
Published: July 2015

Self-compacting concrete which commonly abbrevited as SCC is a special concrete that have the ability to consilodate fully under its own self-weight without any internal or external vibration. This paper presents the experimental investigation carried out to study the strength of self-compacting concrete incorporating bottom ash at different replacement level of natural sand. The composite cement was used and the replacement level of bottom ash to natural sand is set up to 30% by volume. The strength properties such as compressive strength, split tensile strength and flexural strength of the concrete at the age of 7 and 28 days of curing day were conducted. Results shows that the strength of the concrete with bottom ash increased up to replacement level 15% higher than control specimens. This show that bottom ash can be used as supplimentary cementitious materials, having the pozzolanic reactivty.
Time Frequency Analysis for Blade Rub Detection in Multi Stage Rotor System
Authors: Abdelrhman Ahmed M. , Leong M. Salman , Hamdan Yasin M. , Hui Kar Hoou
Published: July 2015

Blade fault is one of the most causes of failure in turbo machinery. This paper discussed the time frequency analysis for blade rubbing detection from casing vibration signal. Feasibility of Short Time Fourier Transform (STFT), Wigner-Ville distribution (WVD) and Choi-Williams distribution (CWD) were examined for blade rub detection in a multi stage blade system through an experimental data. Analysis results of the experimental data showed that these time frequency analysis methods have some inevitable deficiencies in segregating the blade passing frequency (BPF) components of the three rotor stage signals. However, CWD demonstrated a better time-frequency resolution in analyzing the multi stage rotor system signal.
Connection Performance for LVL-Concrete Composite Floor System
Authors: Fong Lee Yen , Abd Ghafar Nor Hayati , Abd Rahman Norashidah , Yeoh David
Published: July 2015

The LVL-concrete composite (LCC) structure is a hybrid in system which the LVL member is well connected to the concrete slab by a connector to produce composite action. Various types of connector with different stiffness and shear capacity are available in the market currently. The stiffness of the connector is identified through the push-out experiment. The notch connections for LVL concrete composite beams have higher stiffness and strength compared to mechanical fasteners. This paper discusses the experimental results of symmetrical push-out tests on 3 different types of connector, 150mm rectangular notch with 10mm diameter screw, 100mm rectangular notch with 8mm diameter screw and 100mm triangular notch with 8mm diameter screw. The experimental test was shear push out to failure and the type of failure was discussed. The 150mm rectangular notch was found to be strongest among all and low cost. The 100mm rectangular notch was found to be slightly stiffer than 100mm triangular notch but 100mm triangular notch is easier to construct with only 2 cut. The maximum strength and stiffness at ultimate limit states and serviceability limit states of each type of connection were discussed in this paper.
The Influence of Impressed Current on Residual Bond Strength of Corroded Structure
Authors: Ayop Sallehuddin Shah , Cairns John J.
Published: July 2015

An experimental work was carried out to study the influence of impressed current on residual bond strength of corroded specimens. In accelerated corrosion process, two different current densities 0.08 mA/cm2 and 0.4 mA/cm2 were used which identified as ‘slow’ and ‘fast’ current. Beam end type bond specimens reinforced with 10 mm and 16 mm bar diameter were prepared for the bond test. Stirrups were provided along the main bar. Corrosion level of the main reinforcement was limited to 8% theoretical section loss. Other parameter such as the location of the test bar (corner and centre location) was also considered. The results indicate a significant influence of impressed current on the crack width with the ‘fast’ current tended to have wider crack than the ‘slow’ current. The influence on bond strength and other related parameters are being discussed.
Prediction of Fracture Parameters of Concrete by Relevance Vector Machine
Authors: Samui Pijush
Published: July 2015

This article employs Relevance Vector Machine (RVM) for prediction of two fracture parameters {Critical Stress Intensity Factorand Critical Crack Tip Opening Displacement (CTODc)} of concrete. Input variables of the RVM model are water-cement ratio (), maximum size of aggregate () and characteristic strength (). The developed RVM gives equations for prediction of and CTODc. A comparative study has been presented between the developed RVM and the ANN models. A sensitivity analysis has been done to determine the effect of each input parameter on the predicted and CTODc. This article shows that the developed RVM can be used as an efficient tool for determination of and CTODc.
Study on Behaviour of Coconut Shell Aggregate Concrete with Bamboo Reinforcement in Compression Member
Authors: Amutha S. , Arul Prakash D. , Lakshmipathy M. , Kumaran G. Senthil
Published: July 2015

The use of waste materials is one of the options for sustainable construction. In this paper the coconut shell waste is considered as coarse aggregate (after the same has been crushed) for preparing light weight concrete. The natural material like bamboo which is having considerable tensile strength is considered for reinforcement along with coconut shell concrete. Since the bamboo may absorb moisture from the concrete, to find its effect, the bamboo is treated with water repellent substance like epoxy adhesive is considered. Four types of short columns are tested. Type A Conventional concrete with steel reinforcement, Type B Coconut Shell concrete with steel reinforcement, Type C Coconut Shell concrete with treated bamboo reinforcement, Type D Coconut Shell concrete with untreated bamboo reinforcement. The conclusions drawn from the study are the load carrying capacity of Type B column is 89% of Type A column. For Type D column the ultimate load is 90% of Type C column. For Type C column the ultimate load is 70% of Type A column. For Type D column the ultimate load is 63 % of Type A column. For Type A column the stiffness is higher than the stiffness of Type B, Type C and Type D column. The energy absorption capacity of Type A, Type B columns are higher than that Type C and Type D columns. The epoxy treatment of bamboo has improved the ultimate load capacity by 1.1 times of the Type D column.
Analytical Approaches to Vibration Analysis of Thick Plates Subjected to Different Supports, Loadings and Boundary Conditions - A Literature Survey
Authors: Ahad Fazl E. , Shi Dong Yan
Published: July 2015

Plates are one of the most important structural components used in many industries like aerospace, marine and various other engineering fields and thus motivate designers and engineers to study the vibrational characteristics of these structures. A lot of research work and studies have been done to study its vibration characteristics. This paper is a review of existing literature on vibration analysis of plates. Focus has been kept on prominent studies related to isotropic plates based on Mindlin plate theory; however few citations on orthotropic plates and higher order shear deformation theories have also been included. All citations are in English language. This review is aimed to provide contemporarily relevant survey of papers on vibrational characteristics of thick plates and identification of various methods and approaches that have been used to study the vibration characteristics. This paper will not only be useful for scientists, designers and researchers to locate important and relevant literature/research quickly but will also help them to identify and apply some of these methods and approaches to study the vibration characteristics of various other 2D and 3D structures.
Dimensional and Geometrical Form Accuracy of Circular Pockets Manufactured for Aluminum, Copper and Steel Materials on CNC Milling Machine Using CMM
Authors: Ali Salah H.R. , Mohamd Omar M.
Published: July 2015

Dimensional metrology plays an important role in the modern manufacturing technology. Accurate machining technology remains the main focus of global industry, where needs to permanent study for the purpose of improving. Coordinate metrology is an important inspection tool of dimension and geometrical surface form for machined work-piece to provide functionality in quality process. Several factors affect the accuracy and quality of manufactured parts when machined using circular pocket cycles on CNC machining centers. Such accuracy depends to a great extent on work-piece material, the cutting conditions; namely spindle speed, feed rate, depth of cut and the structure of the fixed cycle. The accuracy of dimensional and geometrical form plays a vital function on the required tolerance and fit of manufactured parts to be assembled.This paper studies the influence of those parameters on the accuracy and quality of milled pocket diameter with its roundness. Several specimens made of aluminum, copper and steel metals were pocket milled on a CNC using different cutting conditions. CMM was used to assess the errors in diameter and roundness measurements of machined parts. In despite of scientific advances in machining technology, however there are still clear deviations in the measurement results according to choice of the cutting condition, especially when change the type of work-piece material. Monitoring suitable validiation method for a typical manufacturing machining is achieved accurately. Moreover, expanded uncertainty in measurement has been estimated using statistical repeatability analysis and most effective experimental parameters.
Modeling of Concrete Composite Induced by Multi-Walled Carbon Nanotubes Using Response Surface Methodology
Authors: Rimal Isaac R.S. , Subin S. , Prakash P. , Praseetha P.K.
Published: July 2015

In this present work a response surface optimization was done to study the effect of the variables curing days, Multi-Walled Carbon Nanotube (MWCNT) and plasticizer on the strength of concrete. The variables were varied in three levels and a total of 15 cylindrical specimens were fabricated based on the experimental design. For measuring the effect of the variables, split tensile strength test was carried out on the specimens. For proper mixing of the MWCNT, sonication is carried out with plasticizer and then this mixture is added with water and the specimens are fabricated. Only the terms with p < 0.05 are chosen as significant. The results shows that an increase in MWCNT %, increased the split tensile strength of the concrete.
Impact of Different Load Profile Patterns on Intermittent Renewable Energy Systems for an Off Grid Power System
Authors: Osaghae Efosa , Ikonwa Charles A. , Ibhadode Ehimen
Published: July 2015

The continuous desire to drift from the conventional sources of energy to renewable energy resources is stymied by the intermittent nature of some of renewable sources such as solar and wind. However, analyses on some of the required conditions in which intermittent energy resources will be attractive and when it will be less attractive are presented in this paper.Pearson’s product moment of correlation coefficient (r) technique was used to calculate to calculate the correlation coefficient with respect to how three distinct hourly load profiles relate to the available solar radiation. The three calculated r values were analysed and applied as the operating strategies for modelling the power system in RETScreen softwareThe results from the three strategies employed show that the positive r value strategy was the most viable option and it can compete with the diesel only system.Therefore, for a distributed power generation system that utilizes an intermittent energy source, the relationship between the intermittent source and the load profile should be considered as an important indicator for determining the feasibility of the project.
Improving Results Aggregation Strategies in Distributed Information Retrieval
Authors: Ghansah Benjamin , Wu Sheng Li , Ghansah Nathaniel Ekow
Published: July 2015

The top-ranked documents from various information sources that are merged together into a unified ranked list may cover the same piece of relevant information, and cannot satisfy different user needs. Result diversification(RD) solves this problem by diversifying results to cover more information needs. In recent times, RD has attracted much attention as a means of increasing user satisfaction in general purpose search engines. A myriad of approaches have been proposed in the related works for the diversification problem. However, no concrete study of search result diversification has been done in a Distributed Information Retrieval(DIR) setting. In this paper, we survey, classify and propose a theoretical framework that aims at improving diversification at the result merging phase of a DIR environment.
Study of Structural, Surface Morphological and Dielectric Properties of Cu-Doped Tin Oxide Nanoparticles
Authors: Sagadevan Suresh
Published: July 2015

Cu doped SnO2nanoparticles were prepared using the chemical precipitation method. The Cu doped SnO2nanoparticles have been characterized by powder X-ray diffraction (XRD) analysis, Scanning electron microscopy (SEM), elemental dispersive X-ray (EDX) analysis, Transmission electron microscopy (TEM), UV-Visible absorption spectrum and Dielectric studies. The average crystalline size of Cu doped SnO2nanoparticles was calculated from the X-ray diffraction (XRD) pattern and found to be 15 nm and it was further confirmed from the transmission electron microscopy (TEM) studies. The scanning electron microscopy (SEM) analysis showed that the nanoparticles agglomerate forming spherical-shaped particles. The elemental composition of Cu doped SnO2nanoparticles was analyzed by Energy Dispersive X-ray (EDX) spectrum. The optical absorption study clearly shows that the absorption edge shift towards the higher wavelength region. The dielectric properties of Cu doped SnO2nanoparticles have been studied in the different frequency at different temperatures. The dielectric constant and dielectric loss of the Cu doped SnO2nanoparticles decreases with increase in frequency. Cu doped SnO2nanoparticles were prepared using the chemical precipitation method. The Cu doped SnO2nanoparticles have been characterized by powder X-ray diffraction (XRD) analysis, Scanning electron microscopy (SEM), elemental dispersive X-ray (EDX) analysis, Transmission electron microscopy (TEM), UV-Visible absorption spectrum and Dielectric studies. The average crystalline size of Cu doped SnO2nanoparticles was calculated from the X-ray diffraction (XRD) pattern and found to be 15 nm and it was further confirmed from the transmission electron microscopy (TEM) studies. The scanning electron microscopy (SEM) analysis showed that the nanoparticles agglomerate forming spherical-shaped particles. The elemental composition of Cu doped SnO2nanoparticles was analyzed by Energy Dispersive X-ray (EDX) spectrum. The optical absorption study clearly shows that the absorption edge shift towards the higher wavelength region. The dielectric properties of Cu doped SnO2nanoparticles have been studied in the different frequency at different temperatures. The dielectric constant and dielectric loss of the Cu doped SnO2nanoparticles decreases with increase in frequency.
Barium Carbonate Nanorods Synthesized though Multi-Phase Equilibrium Microemulsions
Authors: Liu Li Ping , Yin Yun , Hao Jing Cheng
Published: July 2015

Middle-phase microemulsions (MPMs) of two systems of a cationic surfactant tetradecyltrimethylammonium bromide (TTABr)/n-butanol/ iso-octane/Na2CO3and TTABr/n-butanol/iso-octane/BaCl2were obtained. The effect of n-butanol concentrations on the phase behavior of the MPMs for the two systems was investigated. MPMs provide a simple and versatile reaction media for preparing inorganic particles with nanometer scale. On the basis of the investigations on the phase behavior of the MPMs, herein the upper-phase microemulsions (water-in-oil, W/O), and bicontinuous microemulsions (B. C.) were used for synthesizing hierarchically structured barium carbonate (BaCO3) at the nanometer scale. The synthesized BaCO3particles possess of nanostructures which were determined by Transmission Electron Microscopy (TEM) and X-ray diffraction (XRD).
Alternating Current Electrophoretic Deposition of Bovine Serum Albumin onto Magnesium
Authors: Neirinck Bram , Singer Ferdinand , Braem Annabel , Virtanen Sannakaisa , Vleugels Jef
Published: July 2015

Magnesium and magnesium alloys are gaining considerable attention for use in biomedical applications due to their capability to completely resorb in the human body without noticeable side effects. For structural biomedical applications however, the resorption rate is too large. In order to decrease this rate researchers are investigating magnesium alloys with an increased corrosion resistance and/or biodegradable coatings, such as dense protein layers, which retard the resorption.In this work, we demonstrate the electrophoretic deposition of Bovine Serum Albumin (BSA) directly onto pure magnesium substrates using unbalanced alternating fields (AC-EPD). The effect of the obtained coatings on the corrosion behavior of the substrates was evaluated by potentiodynamic polarization. The results show that an albumin layer deposited by AC-EPD from a 50/50 ethanol/H2O medium significantly reduces the corrosion rate.
Understanding the Colloidal Behaviour or 45S5 Bioactive Glass Particles to Obtain Bioactive-Glass Based Composite Coatings by EPD
Authors: Cabanas-Polo Sandra , Boccaccini Aldo R.
Published: July 2015

The interaction between bioactive glass particles and polymers with different functional groups has been established in this work to better understand and control the colloidal processing of the bioactive glass phase. Cationic polyvinylpyrrolidone (PVP), anionic polyacrylic acid (PAA) and neutral polyvinyl alcohol (PVA) were selected and the surface reactions in alcoholic media and between bioactive glass particles and polymers were considered. All three polymers were successfully employed to obtain soft composite coatings incorporating bioactive glass particles.
Development and Characterization of PEEK/B2O3-Doped 45S5 Bioactive Glass Composite Coatings Obtained by Electrophoretic Deposition
Authors: Miola Marta , Verné Enrica , Piredda Antonella , Seuss Sigrid , Cabanas-Polo Sandra , Boccaccini Aldo R.
Published: July 2015

Three different glasses were synthesized by doping 45S5 bioactive glass with B2O3. The bioactivity of the glasses was evaluated by immersion in simulated body fluid (SBF) up to 3 days; all glasses showed the precipitation of hydroxyapatite (HAp) after one day of soaking in SBF. Electrophoretic deposition (EPD) was used to prepare PEEK/B2O3-doped 45S5 glass composite coatings on stainless steel substrates. The coatings were characterized by means of tape test (ASTM D3359-B), scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), contact angle measurements, thermogravimetric analysis and in vitro bioactivity test. All composite coatings exhibited a porous and homogenous structure with a hydrophobic surface, according to the wettability test. The in vitro test in SBF demonstrated that the coatings were highly bioactive.
Electrophoretic Co-Deposition of Chitosan and Graphene Oxide Results in Antibacterial Coatings for Medical Applications
Authors: Metze Anke Lisa , Pishbin Fatemehsadat , Ryan Mary P. , Seuss Sigrid , Diba Mani , Shaffer Milo S.P. , Boccaccini Aldo R.
Published: July 2015

Chitosan – graphene oxide (GO) composite coatings intended for antibacterial applications were obtained by cathodic electrophoretic deposition (EPD) on stainless steel. The coatings were characterized using SEM, FTIR, contact angle and roughness measurements and by antibacterial studies againstE.coli. The coating was observed to consist of a polymer matrix with embedded, agglomerated graphene oxide sheets. A decrease in bacteria cell viability of at least 50 % was measured on the chitosan – GO surface in comparison to uncoated stainless steel.
Design of Electrophoretic Poly(2-Oxazoline)s for Hybridization with Bioactive Glass
Authors: Hayashi Terunari , Takasu Akinori
Published: July 2015

We synthesised the new initiator,N-methyl bis [(nonafluorobutane) sulfonyl] imide (Nf2NMe) for 2-oxazolines derived from bis [(nonafluorobutane) sulfonyl] imide (Nf2NH). Also we compared activity of initiator of Nf2NMe with methyl triflate (TfOMe) and whether it was living polymerization. Furtheremore, not only we synthesized new initiator (Nf2NMe) for 2-oxazolines and evaluated it, but also we created a new hybride with a bioactive glass (Bioglass®45S5) by electrophoretic deposition (EPD) because poly (2-oxazoline) s have biocompatibility. Subsequently, we immersed the poly (2-oxazoline) s / bioactive glass composite film made by EPD in simulated body fluid (SBF) to form the hydroxyapatite.
Electrophoretic Deposition and Characterization of Chitosan/45S5 Bioactive Glass Composite Coatings on Porous Titanium for Biomedical Applications
Authors: Borjas S. , Gil E.J. , Cordero L. , Pavón J.J. , Rodriguez-Ortiz J.A. , Boccaccini Aldo Roberto , Torres Y.
Published: July 2015

Porous titanium samples of cp Ti grade IV were obtained by space-holder technique (50%vol of NH4HCO3, 800 MPa, 1250 oC during 2h in high vacuum), producing a good balance between stiffness and mechanical strength. The samples were coated with chitosan/45S5 bioactive glass composite by electrophoretic deposition. Homogeneity, infiltration efficiency, and coatings integrity (cracking and adhesion) were evaluated in order to establish correlations with processing parameters. SEM, FTIR, and contact profilometry were performed for detailed characterization of the coatings; and micro-mechanical properties (P-h curves and scratch testing) were set-up as well. Optimum EPD parameters were 25V, 7 min and suspension containing 0.5 g/L chitosan and 1.5 g/L BG a titanium structure with pore sizes greater than 200 μm are required.
Microfibres Containing Laminates Prepared by EPD: Microstructure and Fracture Behaviour
Authors: Chlup Zdeněk , Hadraba Hynek , Drdlík Daniel , Dlouhý Ivo
Published: July 2015

Recently it was possible to prepare tailored laminates with perfect and strong interface of layers with precise thickness management. Tailoring of ceramic laminates to obtain optimal mechanical properties with enhanced fracture resistance is possible when predictions based on numerical calculations are employed. Extraordinary mechanical properties were achieved via high internal stresses development during material processing. The aim of this investigation can be seen in two directions. The enhanced crack free green bodies through incorporating small volume fraction of micro-fibres to the powders were prepared. Additionally, control of the crack propagation by incorporated directionally oriented micro-fibres both in the volume and in individual layers. In this contribution both alumina and zirconia micro-fibres were used to help eliminate drying defects in the green body stage before sintering. The co-deposition of ceramic micro-fibres and powder led to the preparation of microstructures having unique orthogonal fracture properties. Developed laminate with thin layers created by zirconia micro-fibres in the alumina matrix seems to be the most promising. This type of material exhibited potential of the crack trapping and deflection even when very small amount of micro-fibres was used.
Nickel Oxide/Nickel Foam Composite as Supercapacitor Electrode via Electrophoretic Deposition
Authors: Gonzalez Z. , Sanchez-Herencia Antonio Javier , Ferrari Begoña , Caballero Alvaro , Morales Julian
Published: July 2015

Nickel oxide/Ni foam composite was studied as an electrode for electrochemical capacitors. The material has been processed by a simple, green and cost-effective electrophoretic deposition (EPD) method directly from the post-reaction medium in an one-pot synthesis and its later heat treatment.NiO films were obtained after calcination (325 and 450ᵒC) of β-Ni(OH)2deposits. β-Ni(OH)2nanoplatelets were produced by chemical precipitation of Ni precursors and the aid of ultrasound, free of modifiers. The stabilization of the hydroxide powder in suspension in different mixtures of Ethanol:Water (4:1, 9:1 and 19:1) and the optimization of the EPD parameters allowed coating the commercial Ni foams via colloidal processing.Electrochemical properties of the electrodes were evaluated by cyclic voltammetry (CV) showing significant differences in terms of specific capacitance of 192 and 79 F/g for the electrodes calcined at 325 and 450ᵒC, respectively.
Ultra-Low-Power Electrophoretic Deposition of Silica Powder with Nonflammable Organic Solvent
Authors: Negishi Hideyuki
Published: July 2015

Although conventional organic solvents are used in electrophoretic deposition (EPD) owing to several advantages, they are hazardous because of their inflammability or ignition properties. In contrast, hydrofluoro ether (HFE) is nonflammable, polar and possesses excellent electrical insulation properties. In this study, methoxy-nonafluorobutane (MNFB), which is one of HFE was used as the solvent for the EPD of silica powder. Because the density of MNFB is larger than water, sedimentation of inorganic particles is slow. The deposition behavior in MNFB was similar to the EPD in conventional solvents, and was controlled by tuning the applied voltage, deposition time, and particle concentration. A uniform coating was obtained. Notably, the power consumed in this process was significantly lower than that in the EPD using conventional solvents. The current density was of the order of 10 nA/cm2; therefore, the electric power consumption for EPD using MNFB was less than 0.1% of those using conventional solvents. Therefore, MNFB can be used as an effective solvent for EPD because it is nonflammable, allows the application of high voltage, and enables the deposition of particles with low power consumption.
ZnO-Based Gas Sensors Prepared by EPD and Hydrothermal Growth
Authors: Yatskiv Roman , Verde María , Grym Jan
Published: July 2015

Arrays of vertically well aligned ZnO nanorods (NRs) were prepared on nanostructured ZnO films using a low temperature hydrothermal method. We propose the use of the low cost, environmentally friendly electrophoretic deposition technique (EPD) as seeding procedure, which allows the obtaining of homogeneous, well oriented nanostructured ZnO thin films. ZnO nanorod arrays were covered with graphite in order to prepare graphite/ZnO NRs junctions. These nanostructured junctions showed promising current-voltage rectifying characteristics and gas sensing properties at room temperature.
Thoracic limb morphology of the red panda (Ailurus fulgens) evidenced by osteology and radiography
Authors: Makungu Modesta , Groenewald Hermanus B. , Du Plessis Wencke M. , Barrows Michelle , Koeppel Katja N.
Published: July 2015

The red panda (Ailurus fulgens) is distributed primarily in the Himalayas and southern China. It is classified as a vulnerable species by the International Union for Conservation of Nature. The aim of this study was to describe the normal osteology and radiographic anatomy of the thoracic limb of the red panda. Radiography of the right thoracic limb was performed in seven captive adult red pandas. Radiographic findings were correlated with bone specimens from three adult animals. The scapula was wide craniocaudally and presented with a large area for the origin of the teres major muscle. The square-shaped major tubercle did not extend proximal to the head of the humerus. The medial epicondyle was prominent. A supracondylar foramen was present. The radial tuberosity and sesamoid bone for the abductor digiti I longus were prominent. The accessory carpal bone was directed palmarolaterally. Metacarpal bones were widely spread. The thoracic limb morphology of the red panda evidenced by osteology and radiography indicated flexibility of the thoracic limb joints and well-developed flexor and supinator muscles, which are important in arboreal quadrupedal locomotion. Knowledge gained during this study may prove useful in identifying skeletal material or remains and diagnosing musculoskeletal diseases and injuries of the thoracic limb.
The redevelopment of parks and open spaces in the inner city of Johannesburg
Authors: De Vries Leani
Published: July 2015

No abstract available
Prefrontal Cortex in Learning to Overcome Generalized Fear
Authors: Korzus Edward
Published: July 2015

Normal brain functioning relies critically on the ability to control appropriate behavioral responses to fearful stimuli. Overgeneralized fear is the major symptom of anxiety disorders including posttraumatic stress disorder. This review describes recent data demonstrating that the medial prefrontal cortex (mPFC) plays a critical role in the refining of cues that drive the acquisition of fear response. Recent studies on molecular mechanisms that underlie the role of mPFC in fear discrimination learning are discussed. These studies suggest that prefrontal N-methyl-D-aspartate receptors expressed in excitatory neurons govern fear discrimination learning via a mechanism involving cAMP response element-binding protein-dependent engagement of acetyltransferase.
On the duality between $p$-modulus and probability measures
Authors: Ambrosio Luigi , Di Marino Simone , Savaré Giuseppe
Published: July 2015

Motivated by recent developments on calculus in metric measure spaces

(X,\mathrm d,\mathrm m)

, we prove a general duality principle between Fuglede's notion [15] of

p

-modulus for families of finite Borel measures in

(X,\mathrm d)

and probability measures with barycenter in

L^q(X,\mathrm m)

, with

q

dual exponent of

p\in (1,\infty)

. We apply this general duality principle to study null sets for families of parametric and non-parametric curves in

X

. In the final part of the paper we provide a new proof, independent of optimal transportation, of the equivalence of notions of weak upper gradient based on

p

-podulus [21, 23] and suitable probability measures in the space of curves ([6, 7]).
Asymptotic analysis and sign-changing bubble towers for Lane–Emden problems
Authors: De Marchis Francesca , Ianni Isabella , Pacella Filomena
Published: July 2015

We consider the semilinear Lane–Emden problem

\tag{$\mathcal E_p$}
\begin{cases}
-\Delta u= |u|^{p-1}u\qquad &\text{ in }\Omega\\
u=0\qquad\qquad\qquad&\text{ on }\partial \Omega
\end{cases}

where

p>1

and

\Omega

is a smooth bounded domain of

\mathbb R^2

. The aim of the paper is to analyze the asymptotic behavior of sign changing solutions of (

\mathcal E_p

), as

p\to+\infty

. Among other results we show, under some symmetry assumptions on

\Omega

, that the positive and negative parts of a family of symmetric solutions concentrate at the same point, as

p\to+\infty

, and the limit profile looks like a tower of two bubbles given by a superposition of a regular and a singular solution of the Liouville problem in

\mathbb R^2

.
La Crosse Virus Field Detection and Vector Competence of Culex Mosquitoes
Authors: Harris M. Camille , Yang Fan , Jackson Dorian M. , Dotseth Eric J. , Paulson Sally L. , Hawley Dana M.
Published: July 2015

La Crosse virus (LACV), a leading cause of arboviral pediatric encephalitis in the United States, is emerging in Appalachia. Here, we report field and laboratory evidence that suggest LACV may be using Culex mosquitoes as additional vectors in this region. This bunyavirus was detected by reverse-transcriptase polymerase chain reaction in two pools of Culex mosquitoes in southwestern Virginia and in six pools in West Virginia. To assess vector competence, we offered LACV blood meals to field-collected Culex restuans Theobald, Cx. pipiens L., and Aedes triseriatus (Say). Both Culex species were susceptible to infection. LACV-positive salivary expectorate, indicative of the ability to transmit, was detected in a small proportion of Cx. restuans (9%) and Cx. pipiens (4%) compared with Ae. triseriatus (40%). In a companion study of Cx. restuans only, we found that adults derived from nutritionally stressed larvae were significantly more likely to disseminate and transmit LACV. Our results indicate a potential role of Culex spp. in LACV dynamics that should be explored further in endemic areas.
A Phase II, Randomized, Safety and Immunogenicity Trial of a Re-Derived, Live-Attenuated Dengue Virus Vaccine in Healthy Children and Adults Living in Puerto Rico
Authors: Bauer Kristen , Esquilin Ines O. , Cornier Alberto Santiago , Thomas Stephen J. , Quintero del Rio Ana I. , Bertran-Pasarell Jorge , Morales Ramirez Javier O. , Diaz Clemente , Carlo Simon , Eckels Kenneth H. , Tournay Elodie , Toussaint Jean-Francois , De La Barrera Rafael , Fernandez Stefan , Lyons Arthur , Sun Wellington , Innis Bruce L.
Published: July 2015

This was a double-blind, randomized, controlled, phase II clinical trial, two dose study of re-derived, live-attenuated, tetravalent dengue virus (TDEN) vaccine (two formulations) or placebo in subjects 1–50 years of age. Among the 636 subjects enrolled, 331 (52%) were primed, that is, baseline seropositive to at least one dengue virus (DENV) type. Baseline seropositivity prevalence increased with age (10% [< 2 years], 26% [2–4 years], 60% [5–20 years], and 93% [21–50 years]). Safety profiles of TDEN vaccines were similar to placebo regardless of priming status. No vaccine-related serious adverse events (SAEs) were reported. Among unprimed subjects, immunogenicity (geometric mean antibody titers [GMT] and seropositivity rates) for each DENV increased substantially in both TDEN vaccine groups with at least 74.6% seropositive for four DENV types. The TDEN vaccine candidate showed an acceptable safety and immunogenicity profile in children and adults ranging from 1 to 50 years of age, regardless of priming status. ClinicalTrials.gov: NCT00468858.
Computer decision support changes physician practice but not knowledge regarding autism spectrum disorders
Authors: Carroll A.E. , Saha C. , Downs S.M. , Bauer N.S.
Published: July 2015

Objective: To examine whether adding an autism module promoting adherence to clinical guidelines to an existing computer decision support system (CDSS) changed physician knowledge and self-reported clinical practice.

Methods: The CHICA (Child Health Improvement through Computer Automation) system, a CDSS, was enhanced with a module to improve management of autism in 2 of the 4 community pediatric clinics using the system. We examined the knowledge and beliefs of pediatric users using cross-sectional surveys administered at 3 time points (baseline, 12 months and 24 months post-implementation) between November 2010 and January 2013. Surveys measured knowledge, beliefs and self-reported practice patterns related to autism.

Results: A total of 45, 39, and 42 pediatricians responded at each time point, respectively, a 95-100% response rate. Respondents’ knowledge of autism and perception of role for diagnosis did not vary between control and intervention groups either at baseline or any of the two post-intervention time points. At baseline, there was no difference between these groups in rates in the routine use of parent-rated screening instruments for autism. However, by 12 and 24 months post-implementation there was a significant difference between intervention and control clinics in terms of the intervention clinics consistently screening eligible patients with a validated autism tool. Physicians at all clinics reported ongoing challenges to community resources for further work-up and treatment related to autism.

Conclusions: A CDSS module to improve primary care management of ASD in pediatric practice led to significant improvements in physician-reported use of validated screening tools to screen for ASDs. However it did not lead to corresponding changes in physician knowledge or attitudes.

Citation: Bauer NS, Carroll AE, Saha C, Downs SM. Computer decision support changes physician practice but not knowledge regarding autism spectrum disorders. Appl Clin Inform 2015; 6: 454–465

http://dx.doi.org/10.4338/ACI-2014-09-RA-0084
Emergency preparedness of families of children with developmental disabilities: What public health and safety emergency planners need to know
Authors: Wolf-Fordham, JD Susan , Curtin, MSW Carol , Maslin, MEd Melissa , Bandini, PhD Linda , Hamad, PhD Charles D.
Published: July 2015

Objective: To assess the emergency preparedness knowledge, behaviors, and training needs of families of children with developmental disabilities (DD).Design: An online survey.Participants: A sample of 314 self-selecting US parents/guardians of children with DD, aged birth-21 years.Main outcome measures: 1) Preparedness self-assessment; 2) self-report regarding the extent to which families followed 11 specific preparedness action steps derived from publicly available preparedness guides; and 3) parent training and support needs. Results: Although most participants assessed themselves to be somewhat to moderately well prepared, even those who reported being “very well prepared” had taken fewer than half of 11 recommended action steps. Most participants expressed a need for preparedness support; virtually all the respondents felt that training was either important or very important.Conclusions: Children with disabilities are known to be particularly vulnerable to negative disaster impacts. Overall, parents in this study appeared under-prepared to meet family disaster needs, although they recognized its importance. The results suggest opportunities and methods for public health and safety planning, education and outreach to parents of children with DD who would benefit from targeted training such as information and skill building to develop effective family preparedness plans and connections to local emergency management and responders.
Understanding emergency information management
Authors: Roeder, MLS Larry
Published: July 2015

Most of my career has been in diplomacy andinternational emergency management. Emergencymanagement positions range from local fire-fightingand city operations centers countering events likeHurricane Katrina to large-scale internationalrefugee and natural disaster operations, unfortunatelythe field has great job growth potential, more criseswill happen with increasingly complex informationproblems. That last point is obvious if we examinereports from USAID (US Agency for InternationalDevelopment), and the International Federation ofRed Cross and Red Crescent Societies. What we needare experts to identify vulnerabilities and solutions,officers who will also be able to blend the basics oflibrary/information management with well-designedcourses on the latest thinking on emergency management.My recommendation is that graduate schools oflibrary/information science build that marriage intheir curriculum as quickly as possible.
Crisis behavior: An exploration of theories in concert
Authors: McConnell, JD, PhD Candidate Jason B. , Crudo, PhD Christine
Published: July 2015

Objective: How might prominent existing communication theory better explain behavior in a crisis context, when considered in concert with one another?Design: This theoretical work highlights the insight to be gained using Situational Crisis Communication Theory and Bandura's notions of self-efficacy to heighten the explanatory power of the Theory of Planned Behavior as applied to communication during times of crisis.Conclusion: Situational Crisis Communication Theory better explains how past experience with crisis influences the attitudes and social norms of crisis behavior, while Bandura's notion of self-efficacy speaks more directly to the availability of resources as contributing factors to perceived behavioral control in a crisis situation. As such, the incorporation of these well-developed notions into the broader framework of the Theory of Planned Behavior affords greater understanding of the relationship between communication and behavior during a crisis. Further exploration of this theoretical relationship is warranted.