International Journal of Research and Reviews in Applied Sciences
ISSN: 2076-734X, EISSN: 2076-7366

Volume 39 (April-June 2019)

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1. AN ANALYSIS OF CASH FLOW: PREDICTIVE MODEL OF FUTURE DYNAMICS
by Khalid Thaher Amayreh & Roberto Castaneda
Abstract

The importance of cash flow forecasting cannot be understated, with this relating to the prediction of future cash surpluses or deficiencies along with general health of the company and more broadly national and global economies. The main aim of this study was to develop predictive models of cash flow forecasting which can be used by businesses in order to build and implement predictive models of future dynamics. This study compiled annual data from the last 10 years of operation of three US corporations in order to build predictive models in which the outcomes of future profit/loss, current ratio, debt to equity ratio, depreciation, interest expense, and cash flow from operations are predicted on the basis of total cash flow. Initial diagnostics determined whether linear regression, fixed-effects panel regression, or random-effects panel regression was used in each individual model conducted. Results found total cash flow to generally have a very high level of predictive power with regard to these outcome measures analyzed. Additionally, the factor of industry was found to be a significant moderator in some cases. These results suggest the high degree of ability to predict these outcomes on the basis of total cash flow. 

Source: International Journal of Research and Reviews in Applied Sciences
April - June (Vol. 39, Issue 1) - 2019

2. SOIL STABILIZATION WITH FLYASH AND WHEAT HUSK ASH – IMPROVEMENTS IN ENGINEERING CHARACTERISTICS
by Robert M. Brooks and Hamza Al-Ayaydah
Abstract

Clays are weak and highly compressible by nature. These characteristics play a major role in the stability of any structure constructed over clay soil. The objective of this paper is to stabilize soil with the fly ash and wheat husk ash. For this purpose an expansive clay was mixed with fly ash and wheat husk ash.  Several engineering improvements have been tested and discussed as a result of this study. The conclusion includes the following: when the WHA content was increased from 0 to 12%, CBR improved from 1.9 to 7.0 % for 0% flyash. The swelling potential of expansive soil decreases with increasing swell reduction layer thickness ratio.

Source: International Journal of Research and Reviews in Applied Sciences
April - June (Vol. 39, Issue 1) - 2019

3. MODELING FACTORS AFFECTING SUBWAY UTILIZATION USING TRANSIT-ORIENTED DEVELOPMENT (CASE STUDY: TEHRAN CITY)
by Behnam Izadyar and Aliasghar Goharpour
Abstract

Transit-Oriented Development (TOD) is a sustainable urban development planning approach and also an important concept to achieve appropriate coordination between transportation and land use. TOD’s basic idea is to develop the city around efficient public transport stations, diverse and mixed-use residential and commercial units with relatively high concentrations, and pedestrian-based environments. High share of private cars, and hence high gas consumption and air pollution in metropolises, explains the need for planning sustainable cities and investigating such urban development strategies as the TOD.

This research aims to identify and quantify the TOD indicators for which the subway stations have been considered as the TOD area center. Modeling results show the meaningfulness of such variables as the waiting time, habit of subway use, walking/private car access to subway stations, and housewifery/entrepreneurship of lodgers and those without private cars. A comparison of models based on the goodness of fit and percent correct estimation indicates the superiority of the dual logit model with dependent variable (using subway once a week, using subway more than once a week).

Source: International Journal of Research and Reviews in Applied Sciences
April - June (Vol. 39, Issue 1) - 2019

4. STATISTICAL PROPERTIES OF THE NONPARAMETRIC KUMARASWAMY KERNEL DENSITY ESTIMATOR WITH APPLICATION
by Samah M. Abo-El-Hadid
Abstract

The In this paper, new kernel density estimator so called Kumaraswamy kernel estimator is introduced. The asymptotic bias, variance, mean squared error (MSE), integrated mean squared error (IMSE), and the optimal smoothing parameter of the proposed estimator are obtained. A simulation study is used to compare the new estimator with other estimators. Finally, the proposed Kumaraswamy kernel estimator was applied to a real Egyptian Average monthly precipitation rate dataset.

Source: International Journal of Research and Reviews in Applied Sciences
April - June (Vol. 39, Issue 1) - 2019

5. AN M/M/1 RETRIAL QUEUE WITH WORKING VACATION AND COLLISION
by Juntong Li, Jinping Xu and Tao Li
Abstract

In this paper, We considered an M/M/1 retrial queue with working vacation and Collision. In order to obtain the necessary and sufficient condition for system to be stable, the matrix-analytic method is used. The stationary probability distribution and some performance measures were also derived. Then we give the conditional stochastic decomposition for the queue length in the orbit when the server is busy. Finally, the model parameters on the system’s characteristics are presented by some numerical examples.

Source: International Journal of Research and Reviews in Applied Sciences
April - June (Vol. 39, Issue 1) - 2019

6. SELF-DUAL CYCLIC CODES OVER F2+uF2+vF2+uvF2
by Gao Leilei
Abstract

In this work, we describe the algebraic structure of self-dual cyclic codes over the ring. (See full text for more details.)

Source: International Journal of Research and Reviews in Applied Sciences
April - June (Vol. 39, Issue 1) - 2019