iosr-JMCE   Volume-16 ~ Issue-4 ~ July-August 2019

Abstract: Projectile trajectories calculated under non-standard conditions are considered to be perturbed. Tools utilized for the analysis of perturbed trajectories are sensitivity functions: effect functions, weighting factor functions (WFFs) and appropriate Green's functions. These functions are used for calculation of meteo ballistic elements B (ballistic wind vector wB, virtual temperature B, density B) as well.
Since 2013 we are working on improving the theory of these functions. We published the improved theory of generalized meteo-ballistic WFFs in the journal Defence technology in the year 2016 and then the improved theory of projectile trajectory reference heights in the year 2017. Using these theories will improve methods for designing firing tables, fire control systems algorithms, and meteo message generation algorithms. This contribution complements the previous two articles and is dedicated to the key problems of numerical calculations of the sensitivity functions.

Keywords: Exterior ballistic; sensitivity analysis; non-standard (perturbed) projectile trajectory; Green's function; Weighting factor function (curve); effect function; norm effect

[1]. Cech, V. Jedlicka, L. Jevicky, J. Problem of the Reference Height of the Projectile Trajectory as a Reduced Meto-ballistic Weighting Factor.Defence Technology 10, Number 2 (June 2014), Issue 2: Special issue of the 28th International Symposium on Ballistics, ISSN: 2214 – 9147, p. 131 - 140
[2]. Cech, V. Jedlicka, L. Jevicky, J. Problem of the Reference Height of the Projectile Trajectory as a Reduced Meto-ballistic Weighting Factor. Extended Abstract. Proceedings of the 28th International Symposium on Ballistics, Editors: Ames, R. G., Boeka, R. D., Atlanta, September 22 - 26, 2014, p. 7 – 10.
[3]. Cech, V. Jedlicka, L. Jevicky, J. Some Problems with the Estimation of Projectile Trajectory Perturbations. Proceedings of 20th International Conference Engineering Mechanics 2014, Book of full texts, Editor: Fuis, V., Svratka, May 12 – 15, 2014, p. 116 – 119.
[4]. Cech, V. and Jevicky, J. Improved theory of generalized meteo-ballistic weighting factor functions and their use, Defence Technology 12 (June 2016), Issue 3: Special issue of the 29th International Symposium on Ballistics, ISSN: 2214 – 9147, p. 242 -254
[5]. Cech, V. and Jevicky, J. Improved theory of generalized meteo-ballistic weighting factor functions and their use, Extended abstract. Proceedings of the 29th International Symposium on Ballistics, Volume 1, Editors: Woodley, C., Cullis,I., Edinburgh, May 9 -13, 2016, p. 92 -95.

Abstract: Experimental and numerical models were conducted to investigate water flow over gabion weirs. In the experimental study, the water surface profile (WSP) was measured for different discharges, flow patterns and downstream face slopes. In the numerical study, ANSYS® FLUENT Computational Fluid Dynamics (CFD)software was used to numerically simulate the flow over gabion weirs. The Reynolds-averaged Navier–Stokes equations were solved to predict the flow domain. The volume of fluid (VOF) method was applied to treat the complex free-surface flow. Structured high dense mesh was employed.The standard k-ε turbulence model was used to analyze turbulence downstream weir. The experimental results were used to verify the numerical model by two statistical indicators; the root mean square error (RMSE) and the mean absolute percent error (MAPE). Numerical results of the WSP showed good agreement with the experimental results. The values of RMSE and MAPE were between (0.60% – 2.49%) and (0.53% – 1.92%) respectively.

Key words: Gabions, Porous Weir, Experiment Model, CFD, VOF, Water Surface Profile

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[4]. Duguay, J.M.; Lacey, R.W.J.; Gaucher, J. A case study of a pool and weir fishway modeled with OpenFOAM and FLOW-3D. Ecol. Eng. 2017, 103, 31–42.
[5]. Chen, Y.; Fu, Z.; Chen, Q.; Cui, Z. Discharge Coefficient of Rectangular Short-Crested Weir with VaryingSlope Coefficients. Water 2018, 10, 204..

Abstract: The main objective of the present works related to the material characterization of fabricated Al-6061 by stir casting technique as increasing percentage by weight and the particle size of B4C increased their strengthening effect and a distinct advantage is the ability to use many combinations of resins and reinforcements especially in aerospace industry. Furthermore, the effects of reinforced particles sizes on the microstructure of the composites were observed by using SEM. The finer particles will provide more efficient barriers to dislocation flow in aluminum matrix and more homogeneously distributed. Larger particles are more susceptible to gravity settling and can result in clustering and agglomeration of reinforcement in matrix region. aluminum metal matrix composites.

Keywords: Particle Size, microstructure, Aluminum Metal Matrix Composites, Stir Casting Technique, Reinforcement.

[1]. Gagandeep Singh, Ashwani kumar, 2019, "A review paper on stir casting of reinforced aluminium metal matrix composite ( MMC), IJCET, Vol.9, No.3
[2]. Gagandeep Singh, Ashwani kumar, 2019, "Investigation of compression strength of al 6061 based B4C reinforced meta matrix composite (MMC)", IJERS, DOI- V3.I1.05.2019.00023
[3]. HC Anilkumar, Hebbar HS, KS Ravi shankar, 2011, "Mechanical properties of fly ash reinforced aluminium alloy composites ,IJMME, 41-5
[4]. Khalil HA, Bhat IU, Jawaid M , Zaidon A 2012, "Bamboo fibre reinforced biocomposites:Areview. Materials and Design", 42:353-68.
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Abstract: The increase in private vehicle ownership by urban residents has caused most housing residents to park their vehicles on street. This creates traffic problems and disrupts the comfort of pedestrians, cyclists and others. The aims of this study is to explain the factors that influence urban mass housing residents to park their four-wheeled vehicles on street, as well as explain the occupant relationship model and housing conditions to their behavior of parking......

Keywords: Vehicles, On Street parking, Housing

[1]. Mulawarman, Ade. 2017. Thesis: Determination of TOD Potential Locations in Mamminasata. Makassar: Hasanuddin University
[2]. http://sulsel.pojoksatu.id/read/2017/06/16/legislator-makassar-layanan-transporasi-berbasis-online-harus-dibatasi/ (Last accessed on 20th November, 2017).
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[4]. Hayati, Erma. 2015. Logistic Regression Analysis to Know Factors Affecting the Frequency of Customer Arrival at the "X" Shopping Center. Lamongan: Faculty of Economics, Lamongan Islamic University.
[5]. Zhan Guo, Zhan. 2013. Does residential parking supply affect household car wnership? -The case of NewYork City. Journal of Transport Geography 26, 2013, pp.18–28..

Abstract: Multiple problems being experienced within public transportation such as accident-prone transportation due to driver dependency besides road, environmental issues mainly due to hydrocarbon fuel pollution has highlighted the need for an efficient system of public transport to reduce the load on the infrastructure and the environment. To overcome the issues faced by the public transit systems, an alternative public transportation system which is 'Intermittently powered, externally driven rail transit' was proposed and has been conceptualized at proof of concept level. The vehicle is intermittently powered and driven externally which runs using the principle of......

Keywords: Externally driven, Intermittently powered, Public transport systems, Rail Transit, Roller bank

[1]. PhilFouracre, Christian Dunkerley, Geoff Gardner, ‗Mass rapid transit systems for cities in the developing world', 2003, Transport Reviews: A Transnational Transdisciplinary Journal, 23:3 pp. 299-310.
[2]. SyedaAnam Hassan, MisbahNosheen, ‗Estimating the Railways Kuznets Curve for high income nations—A GMM approach for three pollution indicators', 2019, Energy Reports, pp. 170-186.
[3]. T.Srinivas, Dr.M.Vidyasagar, ‗The Human Intervention in Train Safety on Indian Railways', 6, 2015, Paripex - Indian Journal of Research, Vol. 4, pp. 366-372.
[4]. Lukasz Owczarzak, JacekŻaka, ‗Design of passenger public transportation solutions based on autonomous vehicles and their multiple criteria comparison with traditional forms of passenger transportation', Delft:s.n., 2015. Transportation Research Procedia. pp. 472-482.
[5]. Patent application number: 201621044454, (India), ‗An Externally Driven Surface Transport System', 27th December, 2016.

Abstract: Infrastructure deterioration is one of the major problems which require applying several procedures such as maintenance of elements, substitution of parts of system and repair damages in water collection system or waste water collection system. Subsequently, it is necessary limiting the corrosion of water and waste water pipes embedded in aggressive media. In the present paper, the effect of aggressive media (Magnesium Sulfate and Chloride) on the corrosion rate and flexural capacity of RC pipes has been studied. Also, the effect of accelerated corrosion periods on the corrosion rate and flexural capacity of RC pipes has been considered. Different parameters including thickness of pipes (50mm and 100mm), concentration of aggressive media, accelerated corrosion setup period, mix compositions of concrete, and reinforcement details have been studied by testing eighteen concrete pipes. The tested RC pipes have been divided on three groups according to concrete type: geopolymer concrete with......

Keywords: Geopolymer Concrete, RC Pipes, Flexure test, Steel Corrosion

[1]. Mohamed, N., 2015. Experimental and Numerical Study on Full-Scale Precast Steel Fibre-Reinforced Concrete Pipes. Ph.D. Thesis,
Faculty of Engineering, The University of Western Ontario, London, Ontario, Canada.
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Synthetic Fiber Reinforcement. Aci Structural Journal.
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Life Predictions – A Review. 9th International Symposium on Advanced Science and Technology in Experimental Mechanics, New
Delhi, India.
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Abstract: Demand for flight numbers is an important factor in planning the capacity and facility requirements at the airport. This study aims to forecast the number of airplane movements over the next 5 years using the ARIMA method, determine the utilization level of the apron with Analytical Models for Gate Capacity, and estimate the amount of parking stand (gate) needed using the formula number of airplane gates. The results showed that the best model for forecasting the number of departure and arrival flights was ARIMA (0,1,1). Th apron utility rate is 35% with the use of 40 parking stands during rush hour. The need for stand parking for the next 5 years is 55 gates. It was concluded that forecasting the number of airplane movements increased every year. The maximum capacity of 75% is 31%..

Keywords: Flight Demand, Forecasting Models, Apron, Effectiveness

[1]. Ali Murtadho and Welly Pakan (2014), Apron Improvement Study of Ahmad Yani Airport Semarang
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Abstract: Abstract: Expansive soils are one of the major soil deposits along the coastal area of East Godavari District, Andhra Pradesh, India. Such soils are predominantly clayey soils or very fine silts exhibit swell-shrink behaviour when subjected to moisture changes and do not have enough strength for any type of construction work. In the process of improving, the engineering properties that means to improve bearing capacity, to increase in soil strength, and durability under adverse moisture conditions of expansive soils, an experimental investigation is carried out to evaluate the effect of lime on various expansive soils and its impact on compaction and strength characteristics......

Keywords: Compaction, expansive soils, lime, unconfined compressive strength

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Abstract: Refrigeration is the science of providing and maintaining temperature below that of surrounding atmosphere, (Arora, 2008). There are many types of refrigeration systems but the commonest one is the vapour compression system. This system makes use of refrigerants that change phases in cyclic operation in order to achieve optimum performance of the equipment. The conventional refrigerants readily in use are classified into three; chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs) refrigerants. The first two refrigerant.........

[1]. Abdullah, M. O., Ngui, J. L., Hamid K. A., Leo S. L. and Tie S. H. (2009).CoolingPerformance of a Combined Solar Thermoelectric-Adsorption Cooling System.An Experimental Study on Energy Fuels. 23(5), 5677-5683.
[2]. Adeyanju, A.A (2010).Experimental and theoretical analysis of a beverage chiller, Research journal of Applied Science,5(3), 195-203.
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