Irina V. Sukhorukova and Natalia A. Chistiakova

DOI: https://doi.org/10.6000/1929-7092.2018.07.12

Published: 09 March 2018  

Abstract: The study proposed an economic model of capital optimization of the insurance company, based on the actuarial method of calculating insurance tariffs. Features of the national insurance system are considered. A mathematical model and actuarial calculation of insurance tariffs for partners in the implementation of joint activities are proposed. As the algorithm implementation calculations were made for the model of joint life insurance of spouses, which has their own practical interest. A lump-sum net rate has been calculated for a contractual partner in the event of the death of one of the partners (spouses) before the retirement age, depending on the interest rate, the age of the spouses, their residual times to pensions, the death rates and the maximum permissible ages. Average time and variance of the Treaty were calculated. It is practically important for the insurance company when planning the investment of assets under the agreement. The results of the research allow us to calculate the insurance tariffs in the form of a lump sum payment to the insured persons and to evaluate the numerical characteristics of the validity period of the contract.

Terzi Chokri, El Ammari Anis and Bouchrika Ali

DOI: https://doi.org/10.6000/1929-7092.2018.07.14

Published: 05 April 2018  

Abstract: Tax policy is among the most common and relevant instruments in the toolkit of policy-makers when thinking about promoting growth, yet there is not compelling evidence regarding its effect in Tunisia. Using a variety of approaches, we measure firstly the optimal tax burden rate using Scully’s static model and the quadratic model. For Scully’s static model, gross domestic product is the dependent variable. For the quadratic model, growth rate is a dependent variable explained by tax rate in level and in square. Secondly and according to stationary and cointegration test results, we focus on the long-term effects on gross domestic product of the important taxes, namely tax revenue and private receipts. In this second study, we use a basic Scully model and we develop a vector error correction model technique. Our results show that optimal tax burden rate has to be situated between 12.8% and 19.6% of gross domestic product which is widely lower than the current rates. The long-term analysis estimates an optimal rate of 14% of gross domestic product which can participate to increase economic growth, to stabilize the tax evasion and to encourage investment especially after the Tunisian revolution.

Vladimir A. Popov

DOI: https://doi.org/10.6000/1929-7092.2018.07.13

Published: 09 March 2018  

Abstract: Cash demand is investigated by means of mathematical analysis. The optimal cash amount a person needs in order to minimize the effect of inflation and maximize percent money is given here. The corresponding number of cash transfers for a period is calculated. The corresponding formulas are presented and proved.

Srikanta Charana Das, Rabi N. Subudhi and Arun Kumar Patra

DOI: https://doi.org/10.6000/1929-7092.2018.07.15

Published: 05 April 2018  

Abstract: Speed, space and judicious sharing web-related resources are the key indicators of successful management of the computing-facilities and other web-resources of any progressive organisation. Such a case becomes much more demanding for any professional academic institution, where the majority stake-holders, that is the young student-users of web-resources, are heavily dependent on web-based learning and personal communications. Other stake holders, like administrative staff, teaching and research community of universities have web-dependence, mostly for known resources. Fast growing dependence of different categories of stake-holders of such large institutes warrants a case-study research, so as to study the present pattern of uses of web-resources, including the timing and pockets of users, and then to have a sustainable strategic planning for a better resource-management of web-resources for future.

The present paper is a case study of a leading private university of Odisha (in India) with over 65,000 users of ‘university web-network’ and over 7500 fixed-systems, which analyses users’ time-series data of last quarter and suggests a futuristic model for optimal and effective use of ‘Institute Web-Resources and computing facilities’.

It studies both fixed-line load and load-management of wireless (Wi Fi) connections, across the 25 campuses of the Institute, scattered and geographically located within 15 sq. km.