bluuebunny/crossref_metadata_2025_split huggingface dataset:
Experimental Study on After-Mixing Temperature Control of Concrete in Batching Plant Production
Authors: Shokravi Hooman , Moradi Shaghaghi Taleb 
Published: January 2020

Abstract
Calculation of the concrete temperature in production phase is an important parameter to control the concrete quality, confining inconsistencies, and costly corrections. In order to obtain after mixing temperature of concrete, the before mixing temperature and weight of the constituent material as well as the moisture contents of the aggregates are collected. Using heat balance equilibrium of the concrete material is an easy and widely used method to calculate after-mixing temperature of the concrete. ACI 306R-10 has presented an equation to calculate the concrete temperature based on thermal equilibrium of the constituents. To evaluate the performance of the equation in estimation of the concrete temperature an experiment is conducted. In the experimental site test results of the output from a batching plant is recorded and graphed. The results of the after induction temperature were calculated using the formula presented in ACI. However, the proposed equation predicts smaller temperature values compared to the actual ones. In the final step the reasons for deviation in the results was discussed and an equation is derived to calculate the concrete temperature for post-mixing stages. The obtained equation was tested on other data and the results show that the method could predict the results reliably.
Sustainable Material: Development Experiment of Bamboo Composite Through Biologically Binding Mechanism
Authors: Ridzqo I F , Susanto D , Panjaitan T H , Putra N 
Published: January 2020

Abstract
Bamboo as stems have been widely manufactured for composite. However, fiber as the smallest constituent component of bamboo stems supporting the strength and flexibility of the plant has not been widely employed as raw material. These strong and flexible properties, coupled with easy planting treatment and fast harvesting, apparently make bamboo highly potential developed as sustainable raw material for composite. Unfortunately, the current manufacturing process of bamboo for composite by using chemical substances would have ended bamboo up as no longer environmentally friendly. By utilizing lignocellulose content within its fiber, this research studied fabrication of a novel composite boards from bamboo fibers through biologically binding mechanism by using fungal mycelium. Gigantochloa apus bamboo stems are extracted into three types: long fibers, short fibers, and powder. Then, the bamboo fibers are added with water and some additional nutritions then sterilized together. These substrates are then inoculated with mycelium seed of Ganoderma lucidum. The fibers bound together along with the growth of mycelium. The result shows that this board is potential to be used for interior purpose in building especially high rise building with high need of light-weight insulation and partition board and expected to replace the need for building components that have been made from unsustainable raw materials and methods.
Assessing the performance of bio compost as soil media in extensive green roof
Authors: Fai Chow Ming , Bin Ahmad Azlan Ahmad Aiman 
Published: January 2020

Abstract
Composted green waste is a recycled material which can be produced locally, adding value to the environmental credentials of a green roof system. As the organic component of green roof growing media, composted green waste can contribute positively to the physical requirements as well as improve environmental performance. In addition it can contain nutrients for plant growth and survival. These will not typically be provided by an inert inorganic substrate and will help establish vegetation. This study is aimed to investigate the performance of bio compost as soil media in extensive green roof with respect to different composition. Runoff were tested for total suspended solids (TS), turbidity, chemical oxygen demand (COD), pH, and color measurements. The results showed that 50% of bio compost in soil media has the best performance in term of plant growth and runoff quality.
Consolidation Behaviour of Dredged Marine Soils Considering the Incorporation of Granular Drainage Layer
Authors: Johan S F S M , Chan C-M 
Published: January 2020

Abstract
The extraction of DMS from seabed along the Malaysian coastal generate millions cubic meters every year. Dredge-transport-dump the DMS at the specified open waters are unfavourable in context of environmental and geotechnical engineering. This paper describes consolidation behaviour of DMS using a modified large- oedometer with a layer of recycled granular materials such as palm oil clinker and recycled pavement materials. DMS were obtained to have high ratio of Wc with 3.27LL and considered as silty clay. A layer of drainage materials accelerates the rate of consolidation and changes in hydraulic conductivity, k of DMS. At the end of consolidation, both RPM and POC layer expediate the water from DMS and it becomes stiffer and structured.
Dynamic Serviceability of Lightweight Composite Deck as Floor System Under Human Excitation
Authors: Norhalim A F , Jaini Z M , Abd Ghafar N , Majid M A , Ahwang A 
Published: January 2020

Abstract
Lightweight composite deck is widely used as floor system due to the advantage of minimum weight as well as to speedy the construction process. There are numerous investigations on the structural behaviour of lightweight composite deck, but its reliability and understanding on dynamic serviceability remain ambiguous. Therefore, this study intents to numerically investigate the dynamic serviceability of lightweight composite deck as floor system. The lightweight composite deck with dimension of 2900 mm span and 900 mm was modelled in STAAD.Pro. The thickness of lightweight composite deck varied from 100 mm to 225 mm. The isotropic equivalent plate model and effective homogenous criterion were adopted for the geometry and material properties. Dynamic serviceability in term of natural frequency and displacement were analysed in corresponds to the thickness of lightweight composite deck. It is noticeable that by increasing the thickness led to the improvement in the natural frequency. In contrast, the displacement become smaller as the thickness become larger. It was identified that only the lightweight composite deck with thickness 200 mm and 225 mm comply the allowable limit.
Development of Self-compacting Fibre Reinforced Structural Mortar for Concrete Repair
Authors: Kaish A. B. M. A. , Sahari E. I. , Fong N. L. 
Published: January 2020

Abstract
Self-compacting or self-flowing fibre reinforced mortar (FRM) is required for strengthening of structural concrete utilizing cementitious composites. In this study, high- strength FRM with self-flowing properties is developed using high volume (50% by weight of cement) blended pozzolans and low-cost nylon fibre. A mixture of fly ash, slag and silica fume was used as blended pozzolan. Nylon fibre derived from conventional nylon rope was utilized as fibre in preparing FRM. Experimental results showed promising results in terms of strength. FRM with 2% nylon fibre was achieved maximum strength, which is as high as 91.32 MPa in 28 days. However, inclusion of fibre causes a decrease of workability in the fresh state. Incorporation of nylon fibre also helped to bridge the crack and thus increase the tensile properties of mortar. Significant improvement was observed in the failure pattern of the specimens while incorporated with nylon fibres. Therefore, this type of FRM can be utilised for concrete repair.
A Review on The Critical Influencing Factor for Life Expectancy (LE) and The Life Expectancy (LE) for Malaysian Housing
Authors: Norfarahayu K , Hairuddin M , Nor Haslinda A , Siti Khalijah Y 
Published: January 2020

Abstract
In 2013, there are two death cases reported due to the broken railing at the Projek Perumahan Rakyat (PPR) flats in the capital city of Malaysia. These cases occurred due to rusting of the balcony railing, which has been neglected in maintenance. These were the evidence of awareness lacking on the need for maintenance, which frequently only be realised at the latter stage of deterioration on house components. The situation aggravated when the house owners do not have any technical knowledge about defects and have zero building construction background, which later on resulting in less to none periodic assessment throughout the life expectancy (LE) of house components. Nevertheless, the absence of Malaysian study on the life expectancy of house components is deemed the centre of the predicament. Therefore, the paper aims to review the critical influencing factor for life expectancy (LE) and the Life Expectancy (LE) for Malaysian housing. Thus, a qualitative undertaking is conducted through multi-layered thematic analysis. As a result, there were eight influencing factors of life expectancy (LE) namely; weather and climate condition; design; maintenance and replacement; the intensity of use; quality of materials and products; technological obsolescence; workmanship; and insects damaged. Afterwards, within 114 number of generic house components, the findings indicated that there were differences of LE for house components; averaging from 14 years to more than 100 years. The particular differences also depend on the influencing factors of LE. These findings were then become the basis for the subsequent research endeavour.
Investigation of the Influence of the Cutout Dimensions on the Stress-strain State of Three-layer Shells with Load-bearing Layers of Composite Materials
Authors: Bakulin V N 
Published: January 2020

Abstract
The description of the model for investigation of the influence of rectangular dimensions in terms of cutouts on the stress-strain state (SSS) in the layers of three-layer conical shells is given. The finite element model is based on the layer-by-layer analysis approach and allows to perform calculations of SSS in shell layers in a wide range of changes in the physical and mechanical characteristics of the layers in the presence of cut-outs. The equations of the classical theory of shells at reception of effective approximations (leading to high speed of convergence of received results) and construction of finite-element model of moment bearing layers are used. The approach with application of the elasticity theory relations for a three-dimensional body in curvilinear coordinates and obtained approximations for construction of a finite element model of the filler layer is described. Influence of the cut-out mortar angle on the parameters of the three-layer shell with load-bearing layers of composite materials is investigated.
A General Principle of Isomorphism: Integration of Regulator and Observer in the Control System
Authors: Kulabukhov Vladimir S 
Published: January 2020

Abstract
The problem is considered and the formalized method of integration of the observer and the regulator in the tracking control system of object of rather arbitrary type is offered. The solution of the problem is carried out on the basis of the General principle of isomorphism. Unlike existing methods, the structure of the control loop is not predetermined. The control loop, the regulator and the observer are determined by the structure of the control object and are formed in a uniquely defined way based on the separation theorem.
Unified Approach to Solving the Trajectory Problem by Usage of Neural Maps
Authors: Kuvshinnikov V S , Kovshov E E 
Published: January 2020

Abstract
In modern robotics, there are many approaches to planning the trajectory of the portal manipulator. Methods based on the use of graphs, methods of potential fields, with the use of cellular decomposition, intelligent and others are used. Many varieties are based on similar mathematical apparatus. An important aspect of the trajectory search method applicability is convenience of chosen workspace and obstacles representation method. The approach proposed for manipulator path modelling implies a multi-level process, which includes periodic calculation and updating of invalid configurations set, considering the held cargo dimensions, a neural map creation and activation by the wave front propagation method etc. During experimental simulations with different activation functions, numbers of artificial neurons and synaptic connection implementation types, few methods of neural map activation have been considered, including flat and/or three-dimensional raster methods and wave propagation with static obstacles.
Determination of Aerodynamic Parameters in Various Conditions of Input Signal
Authors: Nikolaev S V , Moung Htang Om , Latt Kyaw Zin 
Published: January 2020

Abstract
In this paper, determination of aerodynamic parameters of the aircraft in various conditions of input signal which loses its signal after some times is discussed. Normally distributed random variables are utilized as the measurement noise. The results, which show the accuracy of estimation depending on the condition of input signal, are presented.
Fire evacuation and patient assistance simulation in a large hospital building
Authors: Boonngam Hattaya , Patvichaichod Supat 
Published: January 2020

Abstract
This research studied the fire evacuation simulation and patient assistance who were unable to help themselves out a hospital building. The studied building is a high and large building as Thai law which was 10th floors on 90,842.18 square meters and able to accommodate 4,017 occupants that calculated by the NFPA 101 standard which simulated from 3evacuation cases. The experiment result found that all people can be moved out from the building within 3,048 seconds, 2,931 seconds, and 2,958.3 seconds respectively which didn’t over than the standard as High Building Controlled under Thai Law. The reason that time-limited needed as 1 hour when transferred the people out of the building because enhance the safety of people, especially critically ill patients. Thus, the researchers suggested more channels of evacuation through the elevators by testing for 2 situations. The result of 2situations showed that this method can be decreased the fire evacuation frill time as 2,073 seconds and 1,979.5 seconds respectively.
Aerodynamic optimization of unmanned aerial vehicle for offshore search and rescue (SAR) operation
Authors: Dol Sharul Sham 
Published: January 2020

Abstract
Workers on offshore oils rigs are constantly risking their lives due to the location of these rigs in the middle of the ocean. One of the biggest risks to these workers are falling from the rigs and drowning especially during bad weather. Operating UAVs can reduce the risks of injury, human errors and enhances inspections, surveying and emergency operations. The applications of UAVs in offshore tasks are discussed in this paper as well as the aerodynamic optimization of UAV’s propellers. Computational Fluid Dynamics (CFD) analysis and experimental procedures were conducted on multiple propeller alternatives to determine the drag and lift properties and selecting the optimal option based on the lift to drag ratio and desired output. The CFD analysis and the experimental test found that the medium sized (9.0 x 4.5 in) propellers were the optimal option with a drag to lift ratio of 1.75.
Constitutive modelling of high strength low alloy steel under hot compression test
Authors: Kingkam Wilasinee , Li Ning , Pang Hong , Zhao Cheng-zhi , He-xin Zhang , Li Zhi-ming 
Published: January 2020

Abstract
The HSLA steel was studied on an MMS-200 thermal mechanical simulation in the temperature range of 800-1100 °C and a strain rate range of 0.1-1 s−1. The isothermal hot compression tests were used to investigate the flow behaviour of HSLA steel and develop a constitutive equation based on an Arrhenius equation. A modification of Zener–Hollomon parameter was considering the strain rate compensation after hot compression for improve the accuracy of the developed constitutive equation. The comparison of the results shows that the experimental flow stress data are in good agreement with the predicted flow stress data. The average absolute relative error with a correlation coefficient was found to be 6.81% and 0.96, respectively.
Discovering malware based on co-clustering host-domain graphs
Authors: Zhang Wenqian , Niu WeiNa , Zhang Jinhong , Li Jingqi 
Published: January 2020

Abstract
Malware domain discovery based on passive DNS graph analysis supplements existing methods through DNS request and response data analysis. However, the method does not consider the IP relevance and the high complexity of the suspicious computing process. This paper proposes a malware domain discovery method based on passive DNS and IP relevance. The method calculates reputation score, which combines the shortest path from malicious domains to unknown domain with the malicious IP ratio to determine whether the domain malicious.
Egonet based anomaly detection in E-bank transaction networks
Authors: Wang Yuan , Wang Liming , Yang Jing 
Published: January 2020

Abstract
While most of the risks to online banking come from outside, some abnormal accounts can also cause losses to banks or their customers. In this work, we used a data set of 3,411,486 customers collected from a top Chinese bank to mine the abnormal accounts of online banking customers. In order to better express the transaction activities between user accounts, the concept of egonet is used to represent the account relationship in the transaction network. Then, we found that the characteristics of the egonet-based account model conform to the power law distribution, and based on this, anomaly detection is performed. When this method is applied to actual transaction data, we find abnormal account relationships from the data.
Dynamic searchable symmetric encryption schemes with forward and backward security
Authors: Huang Ke , Dong Xiaolei , Cao Zhenfu , Shen Jiachen 
Published: January 2020

Abstract
Dynamic searchable symmetric encryption (DSSE) is helpful to users with limited storage. In DSSE, the users are able to perform search and update queries on the ciphertext which stored on the cloud server. However, DSSE may suffer from file-injection attacks and leak information after deletion. In order to solve these problems, DSSE schemes with forward security and/or backward security have been proposed. In this paper, we propose two efficient DSSE schemes. The first one supports forward security using binary tree as the basic data structure. The second one uses puncturable encryption to achieve both forward and backward privacy.
Dynamic programming based energy management of HEV with three driving modes
Authors: Inuzuka Shota , Shen Tielong , Kojima Takafumi 
Published: January 2020

Abstract
We solve a optimization problem for HEV energy management. In this study, HEV system has three driving modes(EV, parallel, series parallel) with two motors, one engine and two clutches. We change this problem into a combination optimization problem by discretizing each torque as a variable. It is difficult to solve this problem because the combinations of variable are so many. To this hard problem, we solved it efficiently by using dynamic programming and applying steady-state approximation. It does not require much computation time, and a global approximate optimal solution can be obtained.
Experimental study of effects of type of injectors on the performance of gas generator of liquid rocket engine
Authors: Khan Taj Wali , Qamar Ihtzaz 
Published: January 2020

Abstract
The role of the injector is atomization and mixing. It dictates the size and geometry of the combustion chamber and gas generator. Experiments are conducted with water-cooled adjustable length gas generator for a liquid rocket engine with two types of injectors at a lower mixing ratio. Tests are conducted at characteristic length of 1.75 and 4.27 m. Liquid oxygen and kerosene are used as propellants. Single pressure swirl coaxial injector and three like doublet impinging injectors are used. Combustion performance is studied and compared on the base of characteristic velocity. Characteristic velocity is found high at short length but is found low at larger length for pressure swirl injector as compare to impinging injectors.
High precision displacement-measuring interferometer based on phase modulation technique and modulation index effect elimination
Authors: Tung Vu Thanh , Thang Vu Toan 
Published: January 2020

Abstract
A high precision displacement-measuring interferometer based on a phase modulation technique was developed. A PZT actuator was utilized to drive a mirror of a Michelson interferometer by applying a sinusoidal voltage to the PZT controller. The path difference between two arms of the interferometer was modulated leading to modulation in the phase of the interference signal with a frequency of 3 kHz. The first and second harmonics of the interference signal were detected at the modulation index of 2.63 rad, a special value when the values of the first and second orders of Bessel function are equal. The displacement was determined by the ratio of the first and second harmonic in which the effects of modulation index instability and intensity fluctuation were neglected. The phase modulation interferometer using a PZT actuator has no amplitude modulation effect compared with other modulation interferometers using EOM (electro-optics modulator) or modulation the injection current of a laser diode. Moreover, the direction of the displacement that was ambiguous of the traditional interferometers was clarified in a real time. A measurement precision of 60 nm was obtained using the phase modulation interferometer.
An anti-peep passcode keypad based on hybird image and fuzzy adaptive visual distance adjustment
Authors: Qu Hongchun , He Linsheng 
Published: January 2020

Abstract
Because traditional Android mobile phone passcode keypad without anti-peeping function, so we propose a kind of anti-peep code passcode keypad based on hybrid image and fuzzy adaptive visual distance adjustment. First, replace the key bitmaps with hybrid images to solve the problem that password keyboard doesn’t have anti-peeping function. Then, the fuzzy logic and adaptive principle are used to solve the user’s use problem. Finally, it is found through experiments that the time to refresh 10 hybrid images is between 0.38s and 0.48s, and the blur effect of the image can be automatically adjusted according to the distance. The results show that the anti-peep code keyboard makes up for the problem that the traditional passcode keypad has no anti-peeping function.
Microstructure and mechanical property of aluminium based die-cast alloy (ALDC6) for spider arm component
Authors: Heo Min , Babu J.S.S. , Bae Seongmo , Park Jun , Kan Chung Gil 
Published: January 2020

Abstract
In this paper aims on the development of aluminum alloy (ALDC6) using high pressure die casting (HPDC) for spider arm component in washer. Presently, ALDC3 alloy is commonly used for the fabrication of spider arm but it has poor corrosion resistance. ALDC6 alloy which has good corrosion resistance can be used as an alternative material for spider arm. However due to high Si (Silicon) content of 10wt% in ALDC3 alloy it has good castability compared to ALDC6 alloy with 1wt% of Si. Hence there is a need to modify the ALDC6 alloys by increasing the percentage of silicon and magnesium elements so as to improve the castability, strength and corrosion resistance. The optical microstructure of the developed ALDC6 alloy was investigated and its phases were detected by XRD analysis. It was found out that presence of Mg2Si in ALDC6 alloys is higher than that of the ALDC3 alloy. The microstructure and mechanical properties of ALDC6 alloys were evaluated and compared with existed ALDC3 alloys. The tensile strength and yield strength of the developed ALDC6 alloys has improved but elongation decreased. This implies that the spheroidal primary alpha grains and decrease in grain size due to the presence of Si and Mg within the alloy enhance the strength and yield stress.