bluuebunny/crossref_metadata_2025_split huggingface dataset:
Investigating the Walkability Index of a Commercial City Center Using Simulation and Surveys: The Juiz de Fora Case Study
Authors: Carvalho B , Barbosa G , Drach P 
Published: June 2020

Abstract
Although the positive impacts of the urban experience are perceptible when the population occupies public spaces, it is notable that the pedestrian loses more space to motorized transportation every day. The cities are often adapted or even built for the circulation of automotive, which increasingly decreases the walkability in urban areas. However, several studies note that the vitality of a path directly benefits local commerce and safety. This argument encourages the implementation of pedestrian paths and mechanisms that benefit people’s permanence in urban centers. Considering these issues, this article aims to investigate the walkability of the commercial center of Juiz de Fora (MG), a neighborhood that has a peculiar morphology with commercial galleries and that has been encouraged in recent decades to create pedestrian paths. This research method comprises three main steps: computational simulations, interviews and assessment of the Walkability Index (ITDP, 2018). The simulation experiments consist of the construction of a spatial syntax, through the Depthmap program, which processes the path possibilities within the studied region. Its use includes the analysis of network passages configured by commercial galleries, which have an important function for mobility. The interviews were conducted, within the sample space, with questions based on important criteria for the classification of a livable city. Finally, the Walkability Index, based on six criteria (i.e., sidewalk, mobility, attraction, road safety, public safety and the environment), was assessed. Based on the results, there is evidence that the commercial center of Juiz de Fora provides essential characteristics for the quality of mobility for pedestrians, highlighting the importance of the urban form for walkability in commercial centers. Future studies considering other urban centers could benefit from the insights gained from this study as well by applying the proposed research method.
Use of Different Complex Fenestration Systems in Office Spaces in Chile: Analysis of the Energy Consumption and Visual Comfort of Occupants at the Early Stages of Their Design Process
Authors: Bustamante W , Molina G , Uribe D , Vera S 
Published: June 2020

Abstract
Office buildings around the world are mostly designed with high window-to-wall (WWR) facades, regardless of the type of climate where they are located. Chile, a country with a high climate diversity from north to south and from the coast to the Andes, is no exception to this situation. In order to improve the thermal and visual performance of office buildings, it has been shown that complex fenestration systems (SFC), which include an external solar protection system, are effective to control the incident solar radiation and lighting transmission. However, the effectiveness of these systems depends to a large extent on an appropriate CFS design. Some studies of office buildings in Chile show that a high percentage of CFS has not been designed correctly. To support the early stages of the design process of office buildings in Chile and to assist in the design of solar protection systems as part of a CFS, oficity, an easy-to-use tool was designed. In an office space and considering different facades of solar protection systems, the tool allows the development of simultaneous simulations of its total energy consumption (heating, cooling, and artificial lighting), together with the evaluation of the occupants’ visual comfort. The tool performs the simulations in just a few seconds, which makes it appropriate to support the preliminary stages of the building’s design process. The tool is compatible with PCs, smartphones, and tablets. The back end of oficity uses EnergyPlus for annual energy simulation and Radiance for annual lighting simulation. The use of these validated software makes the results of the simulations highly reliable. The tool considers 23 different climates of Chile. This research shows the analysis of an office space in different cities of the country, with variations in its orientation and the protection systems that are recommended for different climates.
Response and impact of fire on bird community in the tropical rainforest: a review
Authors: Mardiastuti Ani 
Published: June 2020

Abstract
Tropical rainforests are often catch by fires. Unfortunately, study on bird community and fire incident was lacking and strongly biased toward temperate forest. The objective of this paper was to provide a review on the response and impact of fire on bird communities inhabiting a tropical rainforest, through an intensive relevant literature review. Most birds are capable to escape fires through flying, although some nestlings, poor fliers and terrestrial birds might not. Thus, direct impacts of the smoke and flames are less significant compared to the indirect effects on habitat alteration. During fires, some birds might respond positively: raptors might circle over fires searching for small mammals exposed on the ground, while insectivorous birds might catch insects in a smoke column. After the fire, habitat was altered, food supply might change (decreased for most birds), while bird community composition might change due to the shift of the population of competitors or predators. Previous studies showed that effects of fire on bird community and their habitat varied widely. In Sumatra and Kalimantan, after fire insectivorous species increased, while the number of frugivorous and omnivorous birds were declined. When fires become too frequent and too intensive, however, vegetation will not able to recover and might lead to the situation where recovery of habitat and the bird community becomes impossible.
Estimation of bird species diversity recovery on post-burnt land in PT Waimusi Agroindah, South Sumatera
Authors: Putri Marini Machdi , Santosa Yanto 
Published: June 2020

Abstract
Currently, one of the events that are suspected to be the main cause of environmental damage is land fires, that are also a fairly routine event in Indonesia. One of the most highlighted fire issues is the fire in oil palm plantations. These fires have increased community assumptions regarding the impact of fires on ecosystems and biodiversity, including bird species diversity. The impact of the fire which was considered to have only a negative impact, led to various demands so that several palm oil industry companies were charged with paying recovery costs. There was a fire in 2015 at PT Waimusi Agroindah. The accusation that fires have only a negative impact requires further research to determine the potential recovery of bird species diversity on post-fire land, particularly in oil palm plantations. The method for estimating land restoration is to compare the diversity of bird species at 2 years after burning (2017) and 4 years after burning (2019). The observational method used was a line transect every morning and afternoon with three repetitions to inventory bird species diversity. The results showed as many as 40 species of birds found in the soil 4 years after burning, higher when compared to the land 2 years after burning found as many as 36 species of birds. This number is higher than the number of species found in unburned land by 25 species in 2017, and 36 species in 2019. The Margalef index equal to 6.11 in 2019 which increased 5.44 in 2017. Evenness index was 0.89 in in 2019 which was originally amounted to 0.83 in 2017. Overall there was a recovery in post-burnt land due to the gain of 12 species and a loss of 7 species. There are 2 species of gained bird included into protected species according to Permen LHK P N0.106 of 2018. An inncrease bird species diversity indicates the ability of the land to gradually recover.
Economic loss value from land and forest fires in oil palm plantation in Jambi, Indonesia
Authors: Putra Erianto Indra , Saharjo Bambang Hero , Wasis Basuki , Hero Yulius , Puspaningsih Nining 
Published: June 2020

Abstract
Peat fires have always become a problem for the country and result to enormous negative impact and losses to the environment and surrounding community. To clear the issues, we assess the economic valuation of peat fires in palm oil plantation in Tanjung Jabung Timur Regency, Jambi Province, Indonesia. Here, we focused on the economic losses from air pollution, environmental/ecological damage, and benefit loss of goods and services due to peat fire on 2002-2014. These economic losses are calculated based on Regulation of Minister of Environment No. 7/2014. We found the enormous total economic loss due to peat fire of more than IDR 4.46 trilion. Benefit loss of goods and services accounts for more than 50% of the total economic loss, followed by the loss from carbon emission. The area affected by the fire in the large scale-company owned palm oil plantation is found more than 29 times larger than the smallholder, but the impact/ha for the smallholder is more than twice of that in smallholder palm oil. These high lost due to peat fire on the oil palm plantation strongly suggest to escalate the fire prevention effort in the palm oil plantation to avoid further devastating peat fire and severe economic loss.
Influence of Multi-walled carbon nanotubes on mechanical properties of cement concrete
Authors: Kaur Mavjot , Murari Krishna , Singh Gurpuneet 
Published: June 2020

Abstract
The mechanical characteristic of cement concrete with incorporation of multi-walled carbon nanotubes (MWCNT) has been investigated in this paper. Disparate concrete mixes were prepared incorporating CNT-to-cement weight fractions of 0.075, 0.1, 0.125 wt.% in traditional concrete. The flexural and compressive strength were determined after 7 and 28 days of curing. The results of the experimental work showed the maximum increase in the strength was almost 1.5times than the conventional concrete which is believed to occur due to effective dispersion and nano-scale particle size. This was obtained in mix containing 0.075 wt.% of CNTs, making it the optimum content for improving strength parameters. Moreover, the post cracking strength of concrete after CNTs addition was found to be more than the conventional concrete with the reduction in the abrasion of the concrete.
Experimental investigation and effects of laser hardening process parameters on microhardness of En24 steel
Authors: Wagh Santoshkumar V. , Bhatt Dhananjay V. , Menghani Jyoti V. , Pardeshi Sujit S. , Deshmukh Bhagyesh B. 
Published: June 2020

AbstractIn presented paper through experimental investigation is carried out with fiber laser system so as to evaluate the effects of laser surface hardening process parameters on the microhardness (width and depth) of the laser treated En24 steel using a Taguchi method. The optical microscope and microhardness tester is used to examine the microstructure, microhardness (width and depth) of the laser hardened samples across the heat affected zone. The selected process parameters were laser beam power (210, 225 and 300 W), laser scanning speed (1.0, 5.5 and 10.0 mm/s) and standoff distance (175, 200 and 225 mm) respectively. The laser treated hardened surface layer has a microhardness of 728.1 HV0.3and reached a microhardness depth of 2471.44 µm, which is twice as high as untreated samples of En24 steel. From this study, it can be summarized that the microhardness of laser treated samples is maximized by controlling laser beam power, laser scanning speed and standoff distance, which improves the service life of laser-treated En24 steel components. The percentage error within the acceptable range was found to be small and was obtained by comparing the microhardness values obtained from the experimental results and predicted microhardness values obtained by using nonlinear regression equation.
Static buckling analysis of shape memory alloy reinforced composite laminated plate
Authors: Lal Achchhe , Markad Kanif 
Published: June 2020

Abstract
With high strength and stiffness composites are being widely used as structural materials. The properties of composites can further improve by reinforcing with advanced structural components like shape memory alloys (SMA). In the present study nonlinear buckling analysis of laminated composite plate with layer of shape memory alloys are done. Finite element governing equation based higher order shear deformation theory with principle of virtual work is considered. Properties of composite plates are formulated with micro-mechanical approach. A MATLAB program is developed with nine nodes isoperimetric element. Influence of volume fraction of SMA, recovery stress, with and without SMA layer, with temperature on critical buckling load is revealed. Convergence and validation study presented here shows the exactness and efficiency of the model.
Stress analysis of composite plate with cutout of various shape
Authors: Lal Achchhe , Sutaria B.M , Kumar Rahul 
Published: June 2020

Abstract
Composite plate found numerous applications in various structures due to its superior properties like high stiffness to weight and strength to weight ratio. Generally, cutouts in these structural elements are unavoidable for many purposes like access to internal parts, ventilation and sometimes to prevent resonance. These geometrical discontinuities in the form of cutouts may be of different shapes and arise nonuniform stress in the plate. Therefore, it becomes necessary to analyse stress concentration factor near cutouts and effect of shape of cutouts on axial deformation and stress distribution for better safety and stability of structure. In the present investigation a Carbon/epoxy composite plate with various shape of cutout subjected to in-plane tensile loading is considered. Finite element based plane stress analysis is used for mathematical modeling. A program for the present analysis is developed in MATLAB. Variation of in-plane displacement and stress concentration factor (SCF) with various shape of cutout is determined. The effect of the geometry of hole on the stress distribution around the hole is also studied. The results of various analyses have been presented with the help of tables, graphs, and nodal plots.
Analysis, modeling and optimization of surface roughness in cylindrical traverse cut grinding using factorial design, RSM and simulated annealing algorithm
Authors: Rudrapati R , Bandyopadhyay A , Pal P K , Rathod L 
Published: June 2020

Abstract
In the present investigation, a new hybrid technique response surface methodology (RSM) based simulated annealing (SA) algorithm approach is proposed to predict surface roughness for stainless steel material in traverse cut cylindrical grinding process. Experiments are designed as per full factorial design, wherein infeed, longitudinal feed and work speed have been considered as the important input parameters. Analysis of variance and graphical main and interaction plots have been plotted for analyzing the experimental data for identifying the relationships between grinding parameters and surface roughness. The variation of the performance parameter (surface roughness) with grinding parameters has been mathematically modeled by RSM. SA algorithm has been employed for solving the obtained mathematical model. Finally, the validation exercise is performed with optimum levels of grinding parameters. The results confirm the efficiency of the approach employed for prediction of surface roughness in this study.
Numerical study of edge crack interaction with inclusion and void of an isotropic plate under different loadings by extended finite element method
Authors: Lal Achchhe , Vaghela Manoj B. , Mishra Kundan 
Published: June 2020

Abstract
In the present work Extended Finite Element Method (XFEM) is utilized for interaction study of cracked isotropic plate under different loading conditions. XFEM is a powerful tool to handle fracture mechanics problems where, extra enrichment functions for the crack faces and tip are get utilized. In this present work main focus is interaction study of edge cracked isotropic plate with inclusion and void under tensile, shear, combined (tensile and shear) and exponential loading. Here, MATLAB environment is used to evaluate mixed mode stress intensity factor (MMSIF) of edge cracked isotropic plate when interacted with inclusion and void.
Computational analysis of novel cavity-based flameholder designs for supersonic combustion engines
Authors: Nayal Sanchayata , Lamb Sampada , Sahoo Devabrata , Raghavendra N. V. , Bellary S.A.I. 
Published: June 2020

Abstract
Computational analysis for novel cavity-based flameholder designs with different fore-wall and aft-wall inclinations has been presented. The flameholder performance has been evaluated based on the following key parameters: pressure distribution, temperature distribution, recirculation zones and drag force. On comparing the different cavity designs, it has been found that both the fore-wall and aft-wall angles affect the flameholder performance. It was observed that an obtuse fore-wall angle gave favourable results numerically. Further studies can analyze cavities with different obtuse fore-wall ramp angles for optimum flameholder performance.
Probabilistic design of composite leaf spring by using finite element method
Authors: Khiste S G , Kulkarni P , Katekar S D 
Published: June 2020

Abstract
A parametric model is created in ANSYS workbench, FEA method is used to carry out probabilistic design in ANSYS workbench. Mono leaf spring is considered for analysis purpose and analysis is carried out. Composite material is applied to parametric model. Boundary conditions are applied to mono leaf spring, both ends are fixed and load (force) is applied to mono leaf spring. Meshing is carried out. The geometric parameters (thickness, width, etc.) are used as input parameter and Von-Mises stress considered as output parameter. For any further uncertainty in analysis, parametric co-relation function is used in ANSYS. The relation in geometric parameter and output parameter is achieved by correlation coefficients
Seismic Assessment of Concrete Column Reinforced with Fiber Reinforced Polymer and Stainless Steel Rebars
Authors: Thakur Bhairav , Pardeshi Rahul , Patel Mayank , Parghi Anant 
Published: June 2020

Abstract
The fiber reinforced polymer (FRP) rebar is utilized as a corrosion resistive reinforcement in the structural elements like a beam, column, and slab. The FRP rebar offers excellent mechanical and durability properties, like high strength to weight ratio, high stiffness, and corrosion resistance to structures. However, a lower ductility subjected to linear-elastic behaviour, and the brittle nature of FRP particularly in the case of column applications is getting attention among researchers. Whereas stainless steel (SS) having adequate ductility, low maintenance, and resistance to corrosion make it an ideal material for reinforcing applications. To improve the performance of FRP-reinforced elements and diminish the brittle behaviour, the present research is focused on the utilization of SS rebar in the plastic hinge region of the column along with FRP rebar in rest portion of a column. This hybrid configuration is adopted here to improve the ductility and corrosion resistance capacity of the RC column. The damage concentration of the hybrid column is analysed under the effect of nonlinear static loads. The parametric analysis is performed over the hybrid column to study the behaviour of different factors under pushover loading. The results indicate that the ductility of the SS-FRP RC column is achieved under seismic loads. The study reveals that axial load, the yield strength of steel and aspect ratio significantly affect the behaviour of the SS-FRP RC column.
Stabilization on Expansive soil using sea shell powder and Rubber powder
Authors: Vinod B R , Shobha R , Raghavendra A B , Rakesh M , Pallavi S 
Published: June 2020

Abstract
BCS, type of expansive soil which is responsible for the volumetric changes with the change in the moisture content due to the excessive presence of montmorillonite. The stabilization of soil is the process of enhancing the properties of expensive soil and makes it stable to withstand the load acting on it. The stabilization is done by controlled compaction and addition of different types of stabilizers and admixtures. Hence this stabilization is done by various admixtures like cement, fly ash, bagasse, coir fibre, granite dust, rubber powder, sea shell powder etc. this paper represents the study of rubber powder and sea shell powder as different admixture to refine BCS properties. The unconfined compressive strength of BCS is found by adding sea shell powder and rubber powder as admixture, here this paper presents the results of an attempts that are performed.
Life cycle assessment modelling for a developing city‘s water system
Authors: Shrivastava Pooja , Verma M.K. , Murmu Meena , Ahmad Ishtiyaq 
Published: June 2020

Abstract
The research objective to analysis the urban water system (UWS) includes water treatment and distribution, wastewater collection, treatment, and disposal for Raipur city of Chhattisgarh state in India. The city has a dry tropical climate and a warm summer. Developing city is being under pressure due to rapid population expansion, urbanization and industrialization that causes a considerable change in water resources and their services Using SIMA-PRO LCA technology with ReCiPe and IPCC methods, the environmental impact assessment for the urban water system in Raipur was calculate by conducting a life cycle assessment (LCA). LCA tool focuses on water treatment and supply, wastewater, storm water, energy consumption, emission of pollutants and heavy elements to the water bodies and to sewage sludge and others spatial considerations such as population, economic and social assessment, water quality along with stakeholder engagement. LCA is a useful tool for identifying alternative environmental impact solutions and urban water operation scenarios for future strategic planning. In assessment, we found that water losses in distribution network and electricity consumption in water treatment have highest impact on environment while reducing this two by 15% and 2% then it reduces impact about 16%. We studied the existing conditions and different scenarios in this research to enhance the system’s environmental quality and to find solutions to improve sustainability.
Review on Passive Heat Enhancement Techniques in Pool Boiling Heat Transfer
Authors: Katarkar Anil , Majumder Biswajit , Bhaumik Swapan 
Published: June 2020

Abstract
Improvement of pool boiling heat transfer is deeply connected to heat enhancement methods for several years. Nevertheless, the developing progress and ideas in this field make it more intensified with the recently applied methods for enhancing the CHF and HTC. This paper gives a critical analysis and thorough investigative study in the literature discussing the passive heat enhancement techniques in the pool boiling heat transfer. Heat improvement consequence within the pool boiling mainly depends on thermo-physical features of material & the working fluid, modification of surface techniques (pin-fins treated, roughness, extended, artificial cavities pattern, micro-channels), thin-film (nano-scale, micro-scale, macro-scale surfaces, and hybrid scale), coating method, working fluid (water or refrigerants) and additives for fluids. The current status of these passive heat enhancement methods for pool boiling heat transfer with various kinds, improvement potentials, future challenges, surface modification techniques, and their potential industrial and technical applications are also examined in this work.