bluuebunny/crossref_metadata_2025_split huggingface dataset:
Conditions for Bose–Einstein condensation in periodic background
Authors: Bordag M 
Published: November 2019

Abstract
We investigate Bose–Einstein condensation of a noninteracting gas of Bose particles moving in the background of a periodic lattice of delta functions. In the one-dimensional case, where one has no condensation in the free case, this property persists also in the presence of the lattice for all examples which are considered in the present paper and we could only formulate some conditions which are necessary for condensation. We also considered the three-dimensional case and showed that the lattice does not destroy condensation. We calculated, for small coupling, the change in the critical temperature, which is lowered by the lattice. Finally, we took another, more general view on the problem using heat kernel expansion, and discuss BEC for Casimir effect related configurations.
Rubberized concrete filled steel tube
Authors: Abuzaid O. , Nabilah A.B. , Safiee N.A. , Noor Azline M.N. 
Published: November 2019

Abstract
One of the solution to reduce tire waste is by incorporating rubber as fine aggregate replacement, producing a rubberized concrete. This type of concrete generally has lower compressive strength, however, could potentially be used as structural application due to its inherent ductility. This study explored the application of rubberized concrete filled steel tube (RCFST) as structural member. A review of available literature has indicated the lack of experimental data for RCFST. Hence, an experimental study was conducted for circular composite columns with different thicknesses, 2.75mm, 4mm and 5mm, where each were filled with (a) normal concrete and (b) rubberized concrete with 10% fine aggregate replacement. The behaviour of RCFST was studied in terms of strength and ductility under axial compression load. From material testing, it was found that the compressive strength of rubberized concrete was approximately 30% less than that of the normal concrete. However, the axial load capacity of RCFST was only 1.4% to 6.6% less than the control samples (CFST). It was also found that the RCFST possesses some ductility and could be used for structures undergoing vibrations and seismic loads. As the overall behaviour of RCFST is comparable with the control CFST, rubberized concrete has the potential to be used as a filler material in steel tube to form composite column.
The impact of BIM application on construction delays and cost overrun in developing countries
Authors: Tahir Muhammad Muhammad , Azam Haron Nuzul , Hizami Aidi , Alias  , Taha Al-Jumaa Azher , Bala Muhammad Isa 
Published: November 2019

Abstract
Delays and cost overruns are generally acknowledged in the construction industry as serious issues that require the use of advanced technologies. However, the adoption of new technologies has not kept pace with the growth of the industry. This is due to low studies on the impact of these technologies in the industry. Building Information Modelling (BIM) as an alternative technology for management of construction is still in its early stage of adoption in many countries. This research tends to determine the relationship between the use of BIM and the causes of delay and cost overrun in construction industry. Data were obtained through admininstered questionnaires to Contractors, which was analysed using Pearson’s product-moment correlation to determine their relationships at 0.05 level of significance. The results from the analysis of the causes of delay and the causes of cost overrun shows that there is a positive correlation between the two (r=0.737, n = 69, p = 0.000). More also, the result of the analysis shows that there is a significant negative relationship between the application of BIM and the causes of delay and cost overrun (r = -0.246, n = 69, p = 0.041) and (r = -0.313, n = 69, p = 0.009). The result of this research shows that an increase in the use of BIM in the management of construction projects reduces the occurrence of delay and cost overrun.
Post Occupancy Evaluation Measures of Green Interiors Tools Energy Efficiency (EE) Core Criteria
Authors: Yaman R , Abdullah J , Adnan H , Ismail F Z , Ahmad N 
Published: November 2019

Abstract
Interior spaces sustainable rating system in Malaysian is rather new. Even though Green Building Index Interior Tools (GBI-IT) has been developed and implemented but there is lack of post-occupancy evaluation being conducted in assessing the sustainability level of the certified project, particularly on the Space Energy Intensity (SEI). Thus, embarking on the research problem whether the certified interior space sustainable level is according to the pre-occupancy scoring benchmark as vision by the designers upon occupancy, particularly on Energy Efficiency (EE). The research objective is to examine the SEI, to identify similarities and discrepancies of SEI upon pre-occupancy evaluation and post occupancy evaluation and to assess the key EE sub-criteria that affect Space Energy Intensity (SEI) and to improve continuing sustainable EE upon post occupancy. The Space Energy Intensity equation approach and implementation method is used in this research in order to measure total space energy consumption per year/interior space area. The research design will be formulated into three key stages, which are; 1. Content analysis of GBI Interior Tools EE core criteria; 2. Comparative data analysis between pre-occupancy and post-occupancy EE sub-criteria scoring and; 3. Assessment of key EE sub-criteria that affect Space Energy Intensity (SEI) and to improve continuing sustainable EE upon post occupancy. The findings for research problem based on Space Energy Intensity (SEI) on-site measure from case study will improve sustainability practice and continuing sustainable agenda particularly on EE. The study outcome will facilitate and enhance the current and future sustainable approach in interior SEI.
Spatial and Statistics for Profiling Risk Factors of Diseases: A Case Study of Tuberculosis in Malaysia
Authors: Abdul Rasam A R , Mohd Shariff N , Dony J F , Othman F 
Published: November 2019

Abstract
Understanding concepts of a proper disease transmission risk is not a straightforward process. In the context of tuberculosis (TB) dynamics, the concepts require the exploration of two meticulous criteria to produce an accurate epidemic modelling of the risk areas of the disease. The criteria include interpreting the biological transmission of the disease and applying multidisciplinary approaches. Spatial statistics were used to evaluate the preferences of risk factors in Shah Alam, Malaysia. GIS-multicriteria decision making (MCDM) method and logistic regression method were specifically integrated to select the local risk factors and seven influential factors were ranked accordingly i.e. human mobility, high risk group, socio-economic status (SES), population, type of house, distance of factory and urbanisation. Each has relative risk rate that affects the cases and the combination of them will even impact more on the overall risk concentration of TB. Human–based factors are identified as dominant effects to the risk than biophysical factors, for example, a location of TB risk will be increased by four times if individuals are living together with people who have TB disease for a particular time period. This geospatial method is expected to predict a better factor prediction in identifying hotspot areas of the disease.
Survey Based Sustainable Socio-Cultural Guidelines for Neighbourhood Design in Jeddah
Authors: Fatani Khadijah A. , Mohamed Mady , Al-Khateeb Samah 
Published: November 2019

Abstract
Today, many neighbourhoods around the world are suffering from several problems. These problems affected the culture, social interaction, economic aspects as well as environmental impacts. Accordingly, urban development should address social and cultural aspects of each particular community within the environmental and economical context. The current research aims at developing a set of design guidelines that promotes the concept of socially sustainable neighbourhoods in Saudi Arabia. Several rating systems and urban design codes around the world set guidelines for urban design development and particularly in neighbourhood design. LEED (Leadership of Environment and Energy design) for neighbourhood design, and QSAS (Qatar Sustainability Assessment System); are examples of these rating system. Nonetheless, these rating systems are not applicable in the context of Saudi Arabia without considering its local social and cultural aspects. Therefore, this research resulted as a reaction to the abbreviation of socio-cultural aspects in neighbourhood design approaches. This research depends on an analytical review of different neighbourhood design approaches and case studies. In addition, subjective data is collected from experts and professionals about their points of view and their recommendations regarding neighbourhood design for Jeddah city. The result of the research is a set of design guidelines that consists of design principles adjusted to fit the context of Saudi Arabia (Jeddah City). The formulated guidelines are adapted and tested in an evaluation application of two residential neighbourhoods in Jeddah city. This application validated the proposed design guidelines. Considering the proposed design guidelines; in the design process of Jeddah’s neighbourhoods, this will promote a leading approach to the concept of socially sustainable neighbourhoods in the kingdom.
Synthesizing the Maqasid al-Syariah for the waqf property development
Authors: Mohamed Azmi Ahmad Shazrin , Hanif Noor Rosly , Mahamood Siti Mashitoh , Mohd Ali Siti Nadiah 
Published: November 2019

Abstract
The development of Islamic religious related property under the waqf (religious endowment) has shown some progress in many countries. Waqf has propagated its significant towards enhancing the public interest through the supply of many beneficial developments regardless the religious or non-religious purposes. The practice of waqf is maintained under the Shariah rulings and fiqh principles that form the overall Islamic Laws. In relation to Maqasid al-shariah, it has become a fundamental element in seeking for the higher objectives and intents of Islamic Law. It is also known as the wisdom behind the Shariah rulings that the Almighty has imposed on the Muslims. Maqasid al-shariah has three hierarchy of purposes and five essentials to preserve under the Shariah rulings. Examined under the lens of Maqasid al-shariah, waqf is indeed matched with the purpose of Maqasid itself. Moving forward, this study is intended to propose maqasid for waqf property development, which is the extension from the existing studies of maqasid for waqf. This study was using content analysis to search for suitable essentials/components to add into the proposed maqasid of waqf property development. The proposed maqasid of waqf development still maintain the preservations of religion, property and life from the original Maqasid essentials as the primary objectives. But being reinforced with six additional essentials/components to be regarded as the secondary objectives. Through the lens of maqasid, it provides an extension and insight to acknowledge the objective of developing the waqf properties.
Exploratory Research as the way forward towards a green procurement practices for the construction industry; Research Methodology
Authors: Bohari A A M , Bidin Z A , Rais S L A , Saferi M M 
Published: November 2019

Abstract
Green construction is a way forward for the construction industry in Malaysia, towards an environmentally responsible industry. One of the important tools to accelerate green construction is the construction procurement. Thus, the concept of a green-oriented procurement has been introduced to integrate green practices into project procurement delivery. However, green procurement is the least discussed and the concept is still very new in the Malaysian construction industry. Thus, this paper describes a proposed strategy of exploring the potential of green procurement for the construction industry. This is based on an on-going research project whose primary objective is to pave a way forward for the key stakeholders who are involved in green building projects.
Barriers of Life Cycle Costing on Construction Consultant Practice in Malaysia
Authors: Mohd Zaki Zulkhairy Affandy , Mohamad Kamil Abdul ‘Izz , Saidin Mohamad Tajudin , Adillah Ismail Noor Akmal , Isnaini Janipha Nurul Afida 
Published: November 2019

Abstract
Life Cycle Costing (LCC) is deliberately known as a vital tool of construction process to optimise the whole life cost from the cradle to grave. LCC also considered as an important factor for a project to meet the equilibrium point of its strategic objectives. In order to implement the LCC, the procedures must undergo certain framework that enables comparative cost assessments to be calculated over specific duration and take account to relevant economic factors of initial, maintenance, operational, salvage value, discount factors, refurbishment and disposal costs. The aim of this paper is to appraise the benefits and barriers of Life Cycle Costing (LCC) practised in the construction industry of Malaysia among the consultant team. The objectives of this paper to explore the benefits and barriers of LCC faced by consultant team in construction projects. To comply with research objectives, a questionnaire survey and interview conducted among the consultant team in Malaysia. 57 participants responded for the survey conducted in this research. From the results, it appears that the implementation of LCC among the professional design team is still limited. Most of the consultant teams had a good knowledge on the processes of analysing LCC, the parameters to be included but still at minimal phases of implementing overall LCC procedures. The lack of reliable data of LCC founded as the main barriers in the Malaysian construction industry. Most of the respondents agreed that the benefit of LCC is the best way to consider the impact of all costs rather than only initial capital costs.
Consensus Views on the Success Elements for Extension of Time Claim (EoT) in the Malaysian Construction Industry: A Modified Delphi Study
Authors: Yusuwan Norazian Mohamad , Adnan Hamimah , Ahmad Rashid Zul Zakiyuddin , Wan Ismail Wan Norizan , Asyikin Mahat Noor Aisyah 
Published: November 2019

Abstract
Producing a good contractual claim is never an easy task. A good claim not only requires fact and evidences but also demands other important elements that complement each other. This paper reports on a Delphi study focusing on identifying the success elements for Extension of Time (EoT) claim specifically in the Malaysian construction industry. Two rounds of a modified Delphi surveys were conducted and consensus was obtained from twelve experts. The Delphi study has successfully elicit experts’ consensus on the elements that perceived to be the most important element in producing a quality EoT claim that may lead to a speedy, successful and amicable settlement of such claim.
Developing a Research Methodology for Life Cycle Costing Framework for Application in Green Projects
Authors: Maisham Mysarah , Adnan Hamimah , Adillah Ismail Noor Akmal , Asyikin Mahat Noor Aisyah 
Published: November 2019

Abstract
Life cycle costing (LCC) is a method of accessing the total cost of ownership and has been used around the world for the last few decades. Even though many benefits have been associated with LCC, one of them being an effective tool for decision making, its implementation in construction industry is still limited, particularly in green projects. Among the main factors suggested to have hindered application of LCC are lack of knowledge and understanding on LCC, as well as absence of a standard guideline. This paper presents a research methodology adopted for a research aimed to develop a life cycle costing framework for its’ application in green projects. The objectives are to investigate the current practice for LCC application in Green projects, and to determine the relationship between LCC principles with factors influencing effective decision making for LCC best practice in Green project. The methodology of the research involves qualitative and quantitative method, and will be validated by an expert panel interview. The paper provides an overview on the research area, particularly to highlight the issue on the application of LCC and its importance to assist decision makers.
Ceramic Dust Based Binder for Sustainable Stabilisation of Low Flood-Plain Soil
Authors: Rahmat Mohamad Nidzam , Ibrahim Sharina , Ismail Norsalisma 
Published: November 2019

Abstract
The main objective of this study is to investigate the potential use of ceramic dust, by-products from manufacturing industry as a binder in the stabilisation of Laterite Soil. Laboratory investigation involving fabrication of soil cylinders of laterite soil stabilised with 100% CD and combination of CD with traditional binder Lime and PC at 50:50 ratio at 10%, 20% and 30% stabiliser dosage. The compacted cylinders were cured for 7, 28, 60 and 180 days prior for testing. The results from this study illustrated that all key parameters of compressive strength, durability and linear expansion were within the acceptable engineering standard of soil stabilisation. When using blended binders, it further enhances the engineering properties of stabilised material. From the environmental and sustainability, this cementitious technology anticipated that this new innovative stabiliser can be used in low flood-plain soil to mitigate the effect of flooding.
Wave effects on seedling establishment of three pioneer marsh species: survival, morphology and biomechanics
Authors: Cao Haobing , Zhu Zhenchang , James Rebecca , Herman Peter M J , Zhang Liquan , Yuan Lin , Bouma Tjeerd J 
Published: November 2019

AbstractBackground and AimsIt is important to have an in-depth mechanistic understanding of tidal marsh establishment and dynamics to ensure the long-term persistence of these valuable ecosystems. As wave forcing may be expected to impact seedling establishment, we studied the effect of water-imposed drag forces on seedling survival, morphology and biomechanical properties of three marsh pioneer species that are dominant along the salinity gradient in many areas around the world: Spartina anglica (salt to brackish), Scirpus maritimus (brackish) and Phragmites australis (brackish to fresh).MethodsUsing a newly developed plant-shaking mesocosm (PSM) that mimicked water-imposed wave drag forces, the effect of wave stress on seedling survival was examined, together with impacts on morphology and biomechanical properties.Key ResultsAfter 7 weeks of exposure to wave stress, lowered seedling survival and growth for all species was revealed. Wave treatments increased the root/shoot biomass ratio to enhance anchorage and made seedlings more flexible (i.e. reduced flexural rigidity), which might be regarded as a mixed outcome between a stress avoidance and stress tolerance strategy.ConclusionsThe different biomechanical responses between the three dominant marsh pioneer species, overall, make them less resistant to external stress. Therefore, our results indicate that the likelihood of marshes becoming established is reduced if wave energy increases. Despite the different biomechanical response of these three pioneer species to waves, the seedlings of all species were found to have low resistance to external stresses.
O168 VERY LONG-TERM (5-19 YEARS) FOLLOW-UP OF PARAESOPHAGEAL HERNIA REPAIR: PERMANENT MESH vs STANDARD CRUROPLASTY
Authors: Milito Pamela , Zanghì Simone , Sironi Andrea , Asti Emanuele , Bonavina Luigi 
Published: November 2019

Abstract

Aim
Aim of this comparative study was to analyze very long-term safety, symptomatic outcomes and rate of recurrence in a cohort of patients who underwent large hiatus hernia repair with or without synthetic mesh.

Background & Methods
The use of a permanent mesh to reinforce the hiatus could reduce the rate of radiological and symptomatic recurrences after laparoscopic paraesophageal hernia repair. However, strictures and even erosions into the esophageal lumen have been reported. Aim of this comparative study was to analyze very long-term safety, symptomatic outcomes and rate of recurrence in a cohort of patients who underwent large hiatus hernia repair with or without synthetic mesh. Observational cohort study using a prospectively maintained database. From November 2001 to September 2005, 39 consecutive patients underwent laparoscopic repair and fundoplication for large hiatus hernia (> 5 cm). Thirteen patients (Group M) received crural reinforcement with non-absorbable mesh, while 26 patients (Group S) underwent standard cruroplasty. Mesh-related complications, postoperative symptoms and hernia recurrence at very long-term follow-up through upper gastrointestinal endoscopy, GERD-HRQL and FOREGUT questionnaires.

Results
There were 23 women and 16 men, with a median age of 60 years (range 28-81). The hernia size was similar in both groups. Postoperative complications occurred in 2 patients (5.1%) and there was no mortality. The median long-term follow-up was 168 months (range 139-197 months, IQR: 23.5). At last follow-up visit, occasional (once a month) dysphagia occurred in 23% of Group M patients, but none required endoscopic dilatation. The hernia recurrence rate was 0. No short or long-term complications related to the use of the mesh were recorded. In group S, non of patients, complained of dysphagia, whereas 2 (7.7%) patients complained of occasional reflux symptoms and other 2 (7.7%) of dyspepsia. In 4 patients (15.4%), a small hiatus hernia recurrence or a partially slipped fundoplication was noted, but all patients were asymptomatic. GERD-HRQL scores significantly decrease in both groups (p<0.05).

Conclusion
Laparoscopic antireflux surgery with permanent prosthetic mesh is an effective and safe procedure in carefully selected patients with large hiatal hernia.
The histone methyltransferase KMT2D, mutated in Kabuki syndrome patients, is required for neural crest cell formation and migration
Authors: Schwenty-Lara Janina , Nehl Denise , Borchers Annette 
Published: November 2019

Abstract
Kabuki syndrome is an autosomal dominant developmental disorder with high similarities to CHARGE syndrome. It is characterized by a typical facial gestalt in combination with short stature, intellectual disability, skeletal findings and additional features like cardiac and urogenital malformations, cleft palate, hearing loss and ophthalmological anomalies. The major cause of Kabuki syndrome are mutations in KMT2D, a gene encoding a histone H3 lysine 4 (H3K4) methyltransferase belonging to the group of chromatin modifiers. Here we provide evidence that Kabuki syndrome is a neurocrestopathy, by showing that Kmt2d loss-of-function inhibits specific steps of neural crest (NC) development. Using the Xenopus model system, we find that Kmt2d loss-of-function recapitulates major features of Kabuki syndrome including severe craniofacial malformations. A detailed marker analysis revealed defects in NC formation as well as migration. Transplantation experiments confirm that Kmt2d function is required in NC cells. Furthermore, analyzing in vivo and in vitro NC migration behavior demonstrates that Kmt2d is necessary for cell dispersion but not protrusion formation of migrating NC cells. Importantly, Kmt2d knockdown correlates with a decrease in H3K4 monomethylation and H3K27 acetylation supporting a role of Kmt2d in the transcriptional activation of target genes. Consistently, using a candidate approach, we find that Kmt2d loss-of-function inhibits Xenopus Sema3F expression, and overexpression of Sema3F can partially rescue Kmt2d loss-of-function defects. Taken together, our data reveal novel functions of Kmt2d in multiple steps of NC development and support the hypothesis that major features of Kabuki syndrome are caused by defects in NC development.