bluuebunny/crossref_metadata_2025_split huggingface dataset:
Hybrid of Hierarchical and Partitional Clustering Algorithm for Gene Expression Data
Authors: Raja Kumaran Shamini , Shahizan Othman Mohd , Mi Yusuf Lizawati 
Published: July 2020

Abstract
Microarray analysis able to monitor thousands of gene expression data, however, to elucidate the hidden patterns in the data is a complex process. These gene expression data show its imprecision, noise and vagueness due to its high dimensional properties. There are a handful of clustering algorithms have been proposed to extract the important information from the gene expression data. However, identifying the underlying biological knowledge of the data is still hard. To acknowledge these issues, clustering algorithms are used to reduce the data complexity. In this article, hybrid of agglomerative hierarchical clustering and modified k-medoids (partitional clustering) are proposed. Application of the proposed of clustering algorithms to group the genes that have similar functionality which might assist pre-processing procedures. In order to emphasize the quality of the clustering results, cluster quality index (CQI) is determined. Lung and ovary data sets used and the method retrieved a fair clustering with CQI, 0.37 and 0.48 respectively. This research contributes by avoiding biasness toward genes and provide true sense of clustering output using the advantage of hierarchical and partitional clustering methods.
Development of Tic-Tac-Toe Game Using Heuristic Search
Authors: Zain AM , Chai CW , Goh CC , Lim BJ , Low CJ , Tan SJ 
Published: July 2020

Abstract
Tic-tac-toe is a fun game played by two players. Before starting the game, a 3x3 square grid is formed using two vertical and two horizontal lines. The player who succeeds in placing three of their marks in a horizontal, vertical, or diagonal row is the winner. In this study, we develop a computer program where a player can challenge artificial intelligent heuristic approach (opponent) to win the game. We want to prove that artificial intelligent heuristic approach enables in giving a great performance for development of tic-tac-toe game.
Competencies of Quantity Surveyors in Construction Industry: Document Reviews from Different Quantity Surveyor Professional Bodies
Authors: Nur Aishah Mohd Noor Siti , Uzairiah Mohd Tobi Siti , Radin Salim Kamilah 
Published: July 2020

Abstract
Competencies are the process of equipping professional needs and skillsets, which allows a profession to take responsibility for a prescribed body of knowledge. It started by determining the fundamental range of competencies that the professional able to understand and then applying the competencies in the right areas. Quantity Surveyors who work in the construction industry are also not left behind in having specific competencies while delegating their profession as cost and contract advisor in the construction projects. The objective of this paper is to review guidelines and policies regarding Quantity Surveyor competency from different professional bodies governing the Quantity Surveyors profession locally and globally. The document works as a process in evaluating documents where, eventually, produced empirical knowledge and developed understanding. The data obtained from this document analysis will help the researcher to come out with a conceptual model to be used in the mixed-method research approach later. The conclusion summarises that from six professional bodies governing the Quantity Surveyors profession, each professional body emphasized the competencies to be divided into a sub-category of mandatory skills, core competency, and optional competencies.
Effect of Fly Ash Based Geopolymer Reinforced Low Density Polyethylene (LDPE) Composite
Authors: Shanmugam Devi sri , Soo Jin Tan 
Published: July 2020

Abstract
Composite is commonly used today attributed to the distinctive characteristics that can be acquired from the mixture of the components in them. However, as time passes on, our globe is heading towards providing green technology for the sector to use environmentally friendly methods. In this study, Fly Ash geopolymer is used as filler, in the production of LDPE / FA composite, to be inserted in a low-density polyethylene matrix. To enhance bonding between the fly ash filler and the LDPE matrix, alkali activator therapy with the use of sodium hydroxide and sodium silicate at the molarity of NaOH is in range of 12M and the ratio for fly ash to alkali activator is about 2.0. In this research properties of these composites are investigate using tensile test, morphology analysis, thermal properties and infrared spectrum analysis, FTIR. The result found that the tensile strength and modulus of elasticity of the composite increased with increasing of filler loading but the percentage of elongation decrease due to filler loading increase while fly ash filler show the interfacial adhesion on LDPE matrix as evidenced by images of scanning electron microscopy (SEM) and this also proved by FTIR spectra explain that LDPE/FA charged with SiO which is fly ash composed with silica. Moreover, thermal properties explain that fly ash interface reaction which can change to amorphous crystallization during the temperature increase.
Physical and Mechanical Analysis of Paddy Leaves Charcoal Briquettes
Authors: Zulaika Salleh Morgan Noor , Zainuddin Firuz , Nuzul Fadzli Syed Adam Syed 
Published: July 2020

Abstract
Paddy leaves can be used to make charcoal briquettes and good as renewable energy sources. The charcoal briquettes were pressed at a pressure range of 50 – 90 bars using the cold press machine. This paper reports the physical and mechanical properties of charcoal briquettes produced from paddy leaves. The moisture content of paddy leaves charcoal briquettes was calculated after dried in an oven at 80°C until the briquettes reached a constant weight. Then, the paddy leaves charcoal briquettes were subjected to the Compression Test with a maximum load capacity of 500kg and crosshead speed of 0.305 mm/min until the briquettes came to a failure as for the investigation of its compressive strength. The average moisture content of paddy leaves charcoal briquettes were in the range of 7-8%. The lowest value of moisture content was 7.32%, recorded by CB5 charcoal briquette sample which, contributed to the highest value of its compressive strength. Its compressive strength was 2.176 MPa. The investigation showed that CB5 was the best charcoal briquette, and the compressive strength was affected by the moisture content in the paddy leaves charcoal briquettes.
Effect of Uncarbonized and Carbonized Eggshell Powder on Mechanical and Thermal Properties of Recycled High Density Polyethylene/Ethylene Vinyl Acetate Blend Composites
Authors: Hanif M. P. M. , Jalilah A. J. , Naqiuddin M. R. M. 
Published: July 2020

Abstract
The blend composites of recycled high density polyethylene (rHDPE)/ethylene vinyl acetate (EVA) were prepared by melt blending technique at 160 °C with rotor speed of 50 rpm within 10 minutes. Based on Fatimah et al. study[1], the optimum ratio rHDPE/EVA at 70/30 were studied and prepared for different loading of uncarbonized (fresh) and carbonized eggshell powder (5 to 25 wt%). The ESP was collected, washed, crushed, and sieved to obtained size 63 µm by method Farahana et al,.[2]. But she founded that, the mechanical properties reduced with incorporation of ESP filler. Nowadays, carbonized natural filler are the focus of some researchers and the CESP was undergoing a combustion process for 3 hours at 700 °C with air combustion via muffle furnace. The result showed tensile properties decreased with increasing filler loading for both fillers. Then, the mass swell percentage after 46 hours soaked in dichloromethane, the results showed an increment of both fillers were increased the mass swell caused by the hydrophilic nature of fillers. The intensity ratio, interlayer spacing, and crystallinity percentage value decrease with increasing filler loading for both filler give better interaction between matrix and filler. The thermal stability increase for both filler with increasing filler loading. Overall, rHDPE/EVA/CESP blend composites had excellent properties with the addition of carbonized filler.
Improvement of Triple-Band Bandstop Filter Performances by using Parametric Analysis on Defected Ground Structure (DGS) and Mechanical Properties of Geopolymer Ceramic Reinforced Sn-0.7Cu
Authors: Shazuani Mahmud Farah , Shahrazel Razalli Mohammad , Fwen Hoon Wee 
Published: July 2020

Abstract
In this paper, the parametric analysis of the configuration defected ground structure (DGS) for triple-band bandstop filter is proposed. The defected ground structures are used to improve the selectivity and S-parameters losses of the bandstop filter response. The rectangular-shaped DGS are added to the ground of the band stop filter. Initially, the DGS is applied to the first resonator (at 2.45 GHz) of the BSF. Several positions of the DGS are simulated to obtain the best S-parameters and selectivity performances. The same method is implemented on the second and third resonators of the BSF to obtain better performance in S-parameters and selectivity. Finally, all three resonators with the best DGS position are combined into one BSF to obtain triple-band BSF frequency response. This filter is designed by using Roger 4003C with relative dielectric constant, = 3.38 and substrate thickness, H = 0.508 mm. The bandstop filter is modelled and simulated by using high frequency Electromagnetic Simulator (EM). Simulated result shows the insertion losses are, S21 = -23.2 dB (at 2.45 GHz), -16.7 dB (at 3.5 GHz) and -24.4 dB (at 5.2 GHz). The return losses are, S11 = -0.49 dB (at 2.45 GHz), -0.64 dB (at 3.5GHz), 0.49 dB (at 5.2 GHz). The results of different configurations of DGS is analysed and discussed.
Development of Safety and Health Culture of Construction Project Through Academic Institution and Industry Linkages on TVET Platform: A Proposed Study
Authors: Ahmad Razali Nazamuddin , Leman A.M. , Rahman K.A. , Afizi Shuaib Norshah 
Published: July 2020

Abstract
The increasing trend of occupational accident due to unsafe behavior and unsafe act especially in construction site suggests the need for more effective assessment model or framework towards a more proactive measure. The objective of this study is to development of safety and health culture of construction project through academic institution and industry linkages through Technical and Vocational Education and Training (TVET) platform. The cooperation of employers and employees, together with the government agencies, Academic institution, public –private networking and the Construction Industry Development Board (CIDB) of Malaysia towards excellence safety culture and sustainable development. The review on construction industry and related issues, Institutional perspectives on safety climate, a systems approach to workforce development and Malaysia’s TVET developments is the key element of study and it is combination of several approaches. The framework of the study and flowchart were present to ensure the proposed study is ready to execute.
Analysis of feature representation in dictionary learning and sparse coding algortihms for low resolution image
Authors: Mun Ng Suit , Yazid Haniza 
Published: July 2020

Abstract
Super-Resolution (SR) is used to recover a high-resolution (HR) image from the image with low-resolution (LR). SR is important in the biometric identification and the face recognition is an area that bring attention to people. However, the performance of the current systems is affected by the resolution of the input images. Thus, this paper is focusing on the analysis of feature representations in dictionary learning and sparse coding methods for LR image. The input image is the Lena image in grey scale. A total number of 23 features were extracted from the image patches to develop different learned dictionaries using the k-singular value decomposition (k-SVD) algorithm. The denoised images were then produced by using the Douglas-Rachford algorithm. Most of the feature representations were able to produce a final image with Peak-to-Signal Noise Ratio (PSNR) and Structural Similarity Index Matric (SSIM) values of approximately 29 dB to 30 dB and 0.8300 to 0.8600 respectively. However, the denoised image produced with gradient direction obtained only 27.6676 dB and 0.7881 for PSNR and SSIM. Therefore, when different features were extracted for conducting the dictionary learning and sparse coding algorithm, denoised image with different PSNR and SSIM were produced at the end of the process.
A Review on Applications of Particle Image Velocimetry
Authors: Hassan N H , Zawawi M H , Mustafa Al Bakri A M , Rozainy Z M R , Kamaruddin M A , M Nasir W N Y W , Mazlan M A N , Irfan A R 
Published: July 2020

Abstract
Fluid dynamic field is frequently classified and designated into two which are hydrodynamics and aerodynamics. Particle Image Velocimetry (PIV) has been exerted to many flow problems in a broad range. PIV application to the measurement of velocity distributions in fluid flow is represented by the Stokes number. PIV can be executed to practically for any sort of flow if the fluid is transparent to allow suspended particles image. The purpose of this paper is to present some examples of application of PIV in general cases. In the midst of numerous applications of PIV, turbulent flows are the most comprehensively demanding because of their three-dimensionality, naturally large ranges of length and unsteadiness. Sudden flow field measurements of PIV method can be applied for the demotion of turbulence quantities and mean velocities.
Influence of Thermal Aging on Lead-Free Solder Joints Reliability: A Review
Authors: May Shin Chang , Arif Anuar Mohd Salleh Mohd , Suriyani Che Halin Dewi 
Published: July 2020

Abstract
The handheld electronic products currently turning to high density, high performances, and multifunctionality, which sets higher demands on the solder joints reliability in electronic packaging. Because of environmental conscious towards Pb-containing solders, Pb-free solder get attracted wide attention in the electronic industry. Challenges of the Pb-free solders in the microelectronics device are the microstructural evolution influence the mechanical behavior of the solder reliability. This paper analyses a short overview on the progress of the study on the relationship between structure and property, and possible concerns regarding reliability of Pb-free solders joints. Furthermore, the measures to enhance the solder joint reliability are evaluated which contribute to a further theoretical foundation for the research on the solder joints reliability of electronic devices in service life.
Simulation Based Optimization of Thin Wall Injection Molding Parameter Using Response Surface Methodology
Authors: Rosli M. U. , Ahmad Termizi S. N. A. , Khor C. Y. , Nawi M. A. M. , Akmal Omar Ahmad , Ikman Ishak Muhammad 
Published: July 2020

Abstract
Abstract.Improper mold design or processing parameter setting could make a bad impact on the appearance of molded part. It becomes more challenging if the ratio of the part size compared with its wall thickness is greater. Process parameters such as mold and melt temperature, injection temperature including the cavity layout directly affect product quality and cost. It is a complex and difficult task to improve these multi parameters. The objective of this research is to determine optimum settings for processing parameters for a thin walled product by using Response Surface Methodology. Melting temperature, mold temperature, injection pressure and cavity layout are selected as processing parameters and Polyurethane material is selected for this research. Volumetric shrinkage and warpage are selected as the main quality criteria to be controlled respected with the product design specifications. As the result, optimum process parameter settings were mold temperature of 29.89°C, melting temperature of 220°C, and 181.30MPa injection pressure with ‘H’ branching cavity layout. With small differences error value between solution and simulation, 0.31% for volumetric shrinkage and 0.126% for warpage, the result was acceptable.
Decomposition of management processes in “Smart city”
Authors: Chelyshkov Pavel , Mokrova Nataliya 
Published: July 2020

AbstractThis article reviews the existing principles of the definition of “Smart city” approaches to the consideration of its elements (from users to physical processes) and their characteristics, approaches to mathematical description of management tasks to processes of socio-cyberphysical systems. The technological concept of creating modern megacities as the final set of functional multi-purpose components and the relationships between them are discussed. Impacts on the physical level, research methods for complex high-tech systems, and analysis of the problems of intellectualization of urban space are the basis for the development of smart cities. Proposed models and methods are widely used in managing the infrastructure of modern megacities.
Application of BIM in design conflict detection: a case study of Vietnam
Authors: Nguyen Quan T , Luu Phuong Q , Ngo Yen V 
Published: July 2020

Abstract
Design conflict detection in construction projects is a very important task for ensuring the quality, time and cost. This job now has become more convenient due to the use of BIM. This paper proposes a process for BIM-based clash detection for introducing to the BIM practitioners in Vietnam. This process was then adopted in a complicated control house, which is a part of transformer station project in Vietnam, where the design was developed with 2D-CAD. The process discovered 36 design conflicts, including inconsistencies and geometric interferences. The results contribute as a proof-of-concept of BIM-based design conflict detection in Vietnam, where BIM is not very widely adopted.
Effect of superabsorbent polymer solutions on structure formation and properties of cement compositions
Authors: Inozemtcev Aleksandr , Korolev Evgeniy , Qui Duong Thanh 
Published: July 2020

Abstract
The development of compositions with a set of properties that are indifferent to the influence of the environment during the setting and hardening of the binder is an actual task for material science in connection with the evolution of 3D-printers in construction. The use of SAP solutions with delayed polymerization should provide the water reserve in the cement system for internal curing without loss of mobility of the mixture. An important condition is the establishment of “parity” concentrations of the polyacrylate solution at which sorption of water does not reduce the degree of cement hydration. Calorimetric and X-ray phase analyzes showed that the SAP solution in an amount of not more than 1.0 % by weight of Portland cement has a positive effect on the structure formation processes of cement stone. The formation of a more perfect crystalline structure of cement stone is observed. The SAP content of more than 1.5% by weight of Portland cement leads to a decrease in the intensity of the maxima in the radiographs corresponding to the products of hydration of Portland cement. In this case, the less perfect crystalline structure of the cement stone is associated with the formation of physical barriers by the SAP film. It has been shown that the solutions of superabsorbent polymers allow to keep the water for hydration without loss of mobility, in contrast to granular additives. The obtained dependences of the rheological properties of cement mixtures and physico-mechanical properties of cement stone on the content of SAP indicate that the effective concentrations of SAP are 0.5…1.0% by weight of Portland cement.
Investigating the effectiveness of insulation for walls of buildings in Vietnamese climatic condition
Authors: Do Thi-My-Dung , Nguyen Trong-Chuc , Lam Thanh-Quang-Khai 
Published: July 2020

Abstract
Buildings are large heat consumers in all countries. In regions like Vietnam’s climatic conditions, air temperature, and solar radiation, there is a complex relationship with the energy required for cooling in the summer and heating in the winter of residential buildings. Especially, the air temperature is always changing seasonally and affecting the living space temperature in buildings through the process of heat transfer through walls, roofs, ceilings, etc. This paper presents some common insulation materials and evaluates the effectiveness of using insulation for walls of buildings. The calculations are performed on the brick wall covered with insulating layer thickness varies in the range of from 0 cm to 10 cm. The results obtained are the basis for the design of the wall using insulation and the choice of cooling or heating equipment reasonably.
Durability of Concrete with Man-made Thermoplastic Sulfur Additive
Authors: Gumeniuk Aleksandr , Hela Rudolf , Polyanskikh Irina , Gordina Anastasia , Yakovlev Grigorij 
Published: July 2020

Abstract
In the article, the data on sulfur surface modification and its influence on the properties of common cement mix and concrete are discussed as well as durability and corrosive resistance of modified compositions. The composite components, conditions of mixtures making, and required temperature treatment were established in the laboratory testing. The potentiometric model was used to assess the interaction between the corrosive environment and the modified composites, a corrosive agent being used as a sulfate environment. This model takes into account the change in reaction potentials and is used as an index of the solvolysis reaction between the sulfate solution and constituents of the modified cement matrix. This modelling determined two main characteristics used to predict the durability of building material. These are the depth of corrosive agent in the material structure and the amount of solved calcium hydroxide. The established data show the potential usefulness of the modified additive based on man-made sulfur as an additive for cement composites. The modified additive can be used for materials with a high performance and durability in an aggressive environment. The increasing of corrosive resistance might be explained by the structure changing and by the properties of the formed crystalline hydrates.
The efficiency of sulfur modifier to neutralize toxic gases in sulfur-asphalt concrete technology
Authors: Tuan Le Huu , Inozemtcev Sergey , Korolev Evgeniy , Grishina Anna 
Published: July 2020

Abstract
Studies of the advantages of sulfur-asphalt concrete with toxic gas emission neutralizers show that the use of neutralizers reduces the amount of emission of these gases and improves the environmental problem of the use of sulfur-asphalt concrete. Zinc oxide and zinc oxide are not effective in neutralizing hydrogen sulfide and sulfur dioxide. Reducing the emission of toxic gases using dolomite and diatomite is due to the ability of carbonates to neutralize sulfur dioxide through chemical reactions, as well as absorb gases into the porous structure of grains. Other considered neutralization reactions and side processes according to the calculations mainly occur. The processes of interaction of neutralizers with toxic gases and secondary processes can proceed according to various chemical reactions, however, chemical reactions with the release of more energy occur predominantly. This is confirmed by experimental studies. As a result of theoretical and experimental studies, a list of effective toxic gas neutralizers has been established, the emission of which occurs when bitumen interacts with a sulfur modifier.