bluuebunny/crossref_metadata_2025_split huggingface dataset:
SEM-PLS Analysis Approach in Identifying the Effective Residential Bikeway Design Factors
Authors: Mohd Salleh Mohd Zahid , Malek Nurhayati Abdul , Othman Noriah , Mohammad Siti Zabeda 
Published: November 2019

Abstract
The study was conducted to investigate the impact of residential-bike environment influences cycling participation among resident. The underpinning theories used in the study were the Ecological Model of Active Living (EMAF) and the Theory of Routine Mode Choice Decision (TRMCD). A structured questionnaire online survey was employed by engaging two resident associations (RA) in City of Elmina that contributed, 242 respondents. The data was analysed using Smart PLS 3.2.6 to test a developed model through measurement model analysis and followed by a structural model analysis. This approach offers comprehensive, quantifiable and flexible causal-modelling capabilities in a multi-regression analysis for non-parametric data that run simultaneously. The measurement model analysis was archived the threshold values for all criteria such as reliability and validity test. The structural model analysis result showed that perception, preference and satisfaction have significant positive relationship with the bike-built environment directly. Besides, the bike-built environment and cycling participation among resident has significant positive relationship. The Coefficient Determination, R2 of the bike-built environment was substantial value with 33 percent while the cycling participation was 7.3 percent. The study confirmed that the residential-bike built environment has impact on the cycling participation among resident.
Application of Ozone Plasma Technology for Treating Peat Water into Drinking Water
Authors: Ali F , Lestari D L , Putri M D 
Published: November 2019

Abstract
The need of clean water will continue to increase along with the increase of population. However, not all regions in Indonesia have a potential for raw water sources that meet standards to be treated into clean/drinking water, so an alternative water treatment needs to be developed. Peat water is one of water sources that is often found in lowland swamps or in tidal conditions which is much located in Sumatera and Kalimantan. Peat water requires an appropriate technology to be able to treat water into clean water. Peat water treatment using ozone plasma technology is one of technological breakthroughs that can treat peat water into clean water effectively and economically. Peat water used for this study is taken from Sintang, West Kalimantan. Tested Parameters of water quality will be compared with the Regulation of Minister of Health No. 416 Year of 1990. In this study, four parameters in raw water are carried out to be tested after treating with variations in length of contact time of 10, 12, and 15 minutes. Water quality parameters to be tested are turbidity, color, coliform, and permanganate with final quality of treating for each parameter are 5.8 NTU, 1.1 Pt-Co, below 2 MPN/100 mL, and 11.8 mg/L. There is significant decrease in a value of four parameters, which three parameters meeting the maximum limit. Permanganate as parameter that exceed the maximum limit, have high probability of meeting this limit if contact time of treating peat water with ozone plasma is extended.
Safety Manager Competencies In Managing Construction Projects In Malaysia
Authors: Adnan H , Yussof F N M , Jaafar F W , Rashid Z Z A , Abidin Z Z , Bakhary N A 
Published: November 2019

Abstract
This paper aims to identify the core competency required by safety manager in managing construction safety on construction projects and their level of effectiveness. Total of 30 questionnaires received form 100 questionnaires distributed to qualified safety managers work within Klang Valley registered with the Department of Occupational Safety and Health (DOSH) and National Institute of Occupational Safety and Health (NIOSH), Malaysia with various post of safety officer, manager and consultant. It was found that safety managers consume of several important skills and knowledge on general management functions, practices, and procedures regarding safety and occupational health concepts, principles, practices, methods, and techniques based on the working experience on the construction field. The skills and knowledge on general management functions, practices and procedures can be accomplished by presenting personal concerns for the health and safety of employees, conducting the job-training program, participating in the management of safety committees, considering safety in job design, and reviewing the level of work. It has been recommended that safety managers must invest time and energy themselves for own development of skill, knowledge, and other competencies for more efficient professional safety manager.
Benefits of Construction Automation and Robotics in the South African Construction Industry
Authors: Oke Ayodeji , Akinradewo Opeoluwa , Aigbavboa Clinton , Akinradewo Olusola 
Published: November 2019

Abstract
Construction is known for playing important role to the country’s economy and construction research is being conducted across the whole world on improving construction industry from the traditional method of construction to a more suitable advanced construction approach. Automation in construction industry are tools for ensuring production in a business without compromising quality of the construction products, which may result from tiredness of workers. The study aimed at assessing the benefits of construction automation and robotics in the South African Construction Industry. Related literatures were reviewed and the study adopted quantitative analysis in which a well-structured questionnaire was developed to retrieve information from respondents within Gauteng province of South Africa. Respondents for the study were Construction Managers, Quantity Surveyors, Architects and Project Managers. Data retrieved was analysed using Mean Item Score and Standard Deviation. The study revealed and concluded that robotics and construction automation results in increasing quality of the construction project by increasing accuracy of components of the construction project, promote design specifications, reduction in the delivery time of a construction project and also make room for achieving standards.
Place-Making a Child-Friendly Urban Environment Through Artworks
Authors: Affandi T.M.I. , Said I. , Rasidi H. , Za’bar Z. 
Published: November 2019

AbstractMore recently, concern on children’s well-being, health, mobility and upbringing has been increasingly being discussed. The child of today is the city-maker of tomorrow. Rapid urbanization impacts children the most as they have less access to the natural environment in the city. Moreover, in most developing nations including Malaysia, children opinions are not taken into consideration in the development of urban public spaces such as parks, playfields, streets and plazas. Living in an urban environment is not primarily about people relationship but rather the relationship between people, places and spaces. Realizing this, as the Malaysian urban population rapidly increases, the government and local councils have started to rethink and redesign urban spaces to sustain the basic needs and welfare of its citizen. Since neighborhood streets, public spaces, alleys and loose-fit spaces are essential spaces for children’s exploration and play, place-making is one of the favorite projects that many have chosen to use to create an urban environment that is child-friendly. According to Project for Public Spaces (2011), place-making is an integrative approach to better plan, design and manage the urban environment. It focuses on the cooperation and contribution of local communities to promote their safety and well-being. This paper attends towards children’s artworks impact to create a child-friendly environment in an urban environment. From a review of 50 articles in journals of various discipline which includes Environmental Psychology, Art Education, Urban Sociology, Children Cognitive Functioning and Children Geographies, it is understood that children’s participation in place-making an urban environment are influenced to three attributes: (1)artworks as a mode of place-making for a positive emotional sense-of belonging, (2) active participatory of children in creating artworks could cultivate community bond and social skills, and (3) public sphere are spaces for children to exhibit their sense-of-attachment. The review construes that place-making through art can contribute to create a child-friendly environment that is inclusive, healthy, nurturing and sustainable.
Productivity Improvement Strategies in Green Construction Project: Formulation of a Theoretical Framework
Authors: Asyikin Mahat Noor Aisyah , Adnan Hamimah , Yusuwan Norazian Mohamad , Maisham Mysarah 
Published: November 2019

Abstract
Productivity is regarded as one of critical importance aspects of construction projects success and persistently deliberated in research topics in the construction industry. Previous researchers have determined different factors that influence construction productivity in conventional construction project, but there is limited research on productivity particularly in green construction projects. To response to the issue, this paper aims to explore a comprehensive literature review to examine the existing knowledge of construction productivity, particularly in green construction projects. Content analysis is used to identify related matters concerning issues and key factors affecting construction productivity, henceforth, a dynamic strategies of productivity improvement are established. Findings from literature are summarized and a theoretical framework of construction productivity improvement strategies is constructed and proposed. The framework highlights the identified factors affecting productivity in green construction projects, as well as determines the improvement strategies to enhance the construction productivity. The framework will be the instrument for the future development and will assist the construction practitioners to plan efficient approaches for achieving productivity growth in green construction projects. An improved understanding on the key factors of the productivity performance would help policy makers and industry to prioritize their policies and actions, whilst keeping of the eminence in Malaysian construction productivity
The mediating effects of cost estimates reliability on BIM adoption: SEM model analysis
Authors: Adillah Ismail Noor Akmal , Maisham Mysarah , Mohd Zaki Zulkhairy Affandy , Muhammad Rooshdi Raja Rafidah Raja , Sahamir Shaza Rina 
Published: November 2019

Abstract
This paper presents the Structural Equation Modelling (SEM) analysis to evaluate the mediating effects of cost estimates reliability towards the Building Information Modelling (BIM) technology adoption. Using results from a survey by questionnaire, SEM analysis employing SPSS-AMOS application is to assess the relationships amongst the studied constructs (Improved Information, Perceived Benefits, BIM Adoption and Cost Estimates Reliability) by testing three hypotheses. The SEM model was established with its validation through the assessment on its uni-dimensionality, validity, reliability, and fitness index, prior to the hypotheses testing. There are two effects possibly involved in the constructs’ relationships, namely direct and indirect effects, in which were examined using Sobel Mediation Test. The results showed that from all mediating relationships developed amongst the constructs, only Cost Estimates Reliability construct demonstrates its role as partial mediator in the direct relationship between Improved Information and BIM adoption constructs. Whilst the other two hypotheses failed the test, indicating no mediation is possible in between the related constructs relationships. The analysis confirmed that the BIM capabilities could provide better mechanism in understanding project information to establish more reliable cost estimates. It could then improve the estimators’ skills and knowledge throughout the whole cost estimating process, hence potentially motivating them towards adopting the BIM technology.
Fundamental Valuation of Construction Stocks: A Content Analysis from Property Developers
Authors: Nordin M S A , Rahim N Ab , Adnan H 
Published: November 2019

Abstract
The expansion of the Malaysian Construction Companies requires a holistic understanding on the intrinsic values as well as the nature of growth and value features of stocks in order to effectively invest in this sector. The paper aims to assess the intrinsic values of the Malaysia construction companies using fundamental methods of valuation. Content Analysis has been employed to the 10 property developers that has been listed under the top 10 Malaysian property developers in year 2018 identified as Company A to J. Based on the data derived from the companies’ annual report, Bursa Malaysia and stock-related websites, intrinsic value of the construction stock is assessed using three fundamental methods of valuation comprising Price Earning Multiple, Relative Price Earning as well as the Dividend Growth Model. The results suggested that there is a huge inconsistencies of intrinsic values across the first two methods of valuation where most of the stocks are in the state of undervalued while valuation derived from the Dividend Growth Model signifies the overvaluation state of all stocks’ opening prices. This research is expected to provide a preliminary evidence on the intrinsic values of Malaysian Construction Companies as similar analysis and indicators can be used in reviewing the characteristics as well as fundamentally valuing the construction stock in both small and larger investment portfolios.
Friction and lubrication in sheet metal forming simulations: Application to the Renault Talisman trunk lid inner part
Authors: Lacues J. , Pan C. , Franconville J.-C. , Guillot P. , Capellaere M. , Chezan T. , Hol J. , Wiebenga J.H. , Souchet A. , Ferragu V. 
Published: November 2019

Abstract
More and more automotive companies realize that controlling the tribological conditions in stamping production enables prevention of production issues, increasing overall production stability, and therewith achieving higher quality parts. Therefore, increasing effort is spent in accurately accounting for friction and lubrication conditions in sheet metal forming simulations. In this work, a selection of results for a Groupe Renault case is presented whereby forming simulations are utilized to simulate issues, including splits and wrinkles, observed in stamping production for the Renault Talisman trunk lid inner part. A comparison between simulation results and experimental measurements on parts taken from production is made. This comparison shows that the respective issues can only be simulated accurately when accounting for the actual tribological conditions in stamping production. By doing so, simulation accuracy is increased, now enabling Renault to improve part quality by controlling, adjusting and optimizing the tribological conditions in both in simulations and production.
Modelling the surface roughness influence on the hole expansion ratio of multiphase steel
Authors: Münstermann S , Wechsuwanmanee P , Lian J 
Published: November 2019

Abstract
There exist both extrinsic manufacturing process-related and intrinsic material-immanent effects on the edge crack sensitivity of dualphase steels. Extrinsic influences can be further divided into effects of residual damage as well as roughness-induced effects. A new simulation framework is applied to quantitatively assess the surface roughness-induced influences on the edge crack sensitivity of cold rolled dualphase steel of grade DP1000. Hole expansion ratios are numerically predicted for four different edge manufacturing processes, including drilling, milling, waterjet cutting, and wire cutting. The simulation framework applies the idea to make use of a ductile damage mechanics model. It employs realistic material parameters for all elements situated in the bulk, whereas those elements situated at the edge to be expanded during the test apply artificial model parameters. These are identified with the help of sub-models with geometrical surface representation. For the sub-model construction, roughness profiles are experimentally characterized by white light confocal microscopy. With the new simulation framework, numerical predictions of hole expansion ratios can be significantly improved, even though a remarkable overestimation still remains. Among others, this general overestimation can be attributed to local strain hardening, residual stresses, and microstructural modifications.
Experimental and numerical analysis of damage and fracture mechanisms in metal sheets under non-proportional loading paths
Authors: Brünig Michael , Gerke Steffen , Zistl Moritz 
Published: November 2019

Abstract
New biaxial experiments and corresponding numerical simulations with specimens taken from metal sheets are discussed. Inelastic deformation behavior as well as damage and fracture mechanisms are examined in detail under different biaxial loading conditions with special focus on non-proportional loading paths. In this context, a continuum damage model is presented based on a yield condition and a damage criterion as well as evolution equations for plastic and damage strain rates. The damage criterion takes into account the effect of different processes on the micro-scale depending on the stress state. Experiments with biaxially loaded specimens with newly developed geometries have been performed using proportional and non-proportional loading histories. Strain fields are monitored by digital image correlation technique and fracture surfaces are analyzed with scanning electron microscopy. Numerical simulations of the experiments have been performed and numerical results are compared with available experimental data. In addition, based on the numerical calculations stress distributions in critical specimen’s areas are detected allowing prediction of damage and fracture modes. The results demonstrate the efficiency of the new geometries of the specimens covering a wide range of stress states as well as the effect of the loading paths on damage and fracture behavior in ductile metal sheets.
Design and Validation of 3D-Printed Tools for Stamping of DP600
Authors: Asnafi Nader , Rajalampi Jukka , Aspenberg David 
Published: November 2019

Abstract
This paper is focused on automotive stamping tools & dies and the impact of 3D metal printing on design and production of such tools & dies. Forming (U-bend) and trimming/cutting/blanking tools & dies designed both conventionally and by topology optimization were 3D-printed, using Laser-based Powder Bed Fusion (LPBF), in the maraging steel DIN 1.2709. These 3D-printed tools were then used to form (U-bend) and trim/cut/blank 2-mm thick hot-dip galvanized DP600. An approval of the forming tool required that 50,000 U-bends were formed in 2-mm thick DP600 without any surface scratches on the sheet metal part. An approval of the trimming/cutting/blanking tool required 100,000 trimming strokes with this tool, where the maximum (sheet metal) burr height was lower than 0.2 mm (lower than 10% of the sheet thickness (2 mm in this study)). The 3D-printed forming and trimming/cutting/blanking tools & dies - both the conventionally designed and the topology optimized versions – managed the criteria mentioned above and were therefore approved. The approval means that these concepts can now be used to make production stamping tools and dies. This paper describes the topology optimization, the forming & trimming/cutting/blanking testing, the results yielding an approval of the 3D-printed tool concepts, and the 3D-printed production tools for stamping of DP600.
Bridging the gap between engineering and tryout of sheet metal forming parts by a smart solution
Authors: Stippak Michael , Carleer Bart 
Published: November 2019

Abstract
When a good simulation solution is found by an engineering department the challenge is to transfer this knowledge properly to the tryout process, because in an ideal process, the tryout would reproduce engineered results in a minimum time. But very often this knowledge transfer exists only of handing over printed simulation reports to the tryout team and then it depends on the interpretation of such a document to reproduce all important information to get similar results in reality. A solution to improve this situation would be to connect engineering and tryout with a smart digital solution, which supports tryout to reproduce the results from simulation fast and easy. The draw-in from simulation solution can be used as target to reproduce the same draw-in at tryout, because if draw-in is matching, then also the material flow is matching and the strain distribution too. To do so a sensitivity analysis based on the found simulation solution should be calculated by variation of the drawbead restraining and binder force and then exported to a smart digital tryout solution. Finally this smart digital tryout solution would provide all required information to tryout that they are able to reproduce the draw-in like engineered as fast as possible to speed up the process by avoiding unnecessary tool modifications. Based on this the gap between engineering and tryout can be bridged in a more efficient way.
Influence of varying sheet material properties on dry deep drawing process
Authors: Krachenfels K , Rothammer B , Zhao R , Tremmel S , Merklein M 
Published: November 2019

Abstract
Deep drawing is one of the most important processes in sheet metal forming. Conventionally, lubricants are used to reduce friction and wear. Demands for increased sustainability, environmental protection and resource efficiency motivate the realization of lubricant-free forming processes. The direct contact between tool and workpiece during dry deep drawing results in challenging tribological conditions, which cause an increase in friction and wear. Friction-reducing surface modifications of the tool such as carbon based coatings are being developed for the adaptation of the tribological conditions. The aim of this work is the simulation-based analysis of the stress spectrum for varying sheet properties for the qualification of wear-reducing surface modifications for a wide range of applications. By a simulation model for a rectangular cup, the influence of different batches of steel and aluminum materials with varying friction coefficients and mechanical properties is investigated within the framework of variant simulations. The tribological conditions in the simulation are described on the basis of friction coefficients from the strip drawing test. From the simulation results, the applicability of surface modifications for dry deep drawing is being evaluated depending on the sheet specific properties.