ISSN (Print): 2372-708X

ISSN (Online): 2372-7071


Editor-in-chief: Josué-Antonio Nescolarde-Selva

Currrent Issue: Volume 4, Number 1, 2016


A Survey on Secure Cloud: Security and Privacy in Cloud Computing

1M.Tech-Computer Science and Engineering, Lakshmi Narain College of Technology-Indore (RGPV, Bhopal), MP, India

2Department of Computer Science and Engineering, Lakshmi Narain College of Technology-Indore (RGPV, Bhopal), MP, India

American Journal of Systems and Software. 2016, 4(1), 14-26
doi: 10.12691/ajss-4-1-2
Copyright © 2016 Science and Education Publishing

Cite this paper:
Shyam Nandan Kumar, Amit Vajpayee. A Survey on Secure Cloud: Security and Privacy in Cloud Computing. American Journal of Systems and Software. 2016; 4(1):14-26. doi: 10.12691/ajss-4-1-2.

Correspondence to: Shyam  Nandan Kumar, M.Tech-Computer Science and Engineering, Lakshmi Narain College of Technology-Indore (RGPV, Bhopal), MP, India. Email:


Cloud computing is an emerging technology that is still unclear to many security problems. The security problem becomes amplified under the cloud model as new dimensions enter into the problem scope related to the architecture, multi-tenancy, layer dependency, and elasticity. This survey paper introduces a detailed analysis of the cloud security problem. In this paper various existing approaches related to data encryption and message authentications are discussed. After study the existing approaches, issues and challenges are point out during data processing over the cloud. Instead of only encryption or authentication, this paper suggests attribute based encryption and attribute based authentication together, during communication over the cloud for achieving better security.



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An Ecological Model for Predicting Behaviour of Mediterranean Shrublands

1Department of Applied Mathematics, University of Alicante, Alicante, Spain

American Journal of Systems and Software. 2016, 4(1), 1-13
doi: 10.12691/ajss-4-1-1
Copyright © 2016 Science and Education Publishing

Cite this paper:
José Luis Usó-Doménech, Josué-Antonio Nescolarde-Selva, Miguel Lloret-Climent, Lucía González-Franco. An Ecological Model for Predicting Behaviour of Mediterranean Shrublands. American Journal of Systems and Software. 2016; 4(1):1-13. doi: 10.12691/ajss-4-1-1.

Correspondence to: Josué-Antonio  Nescolarde-Selva, Department of Applied Mathematics, University of Alicante, Alicante, Spain. Email:


In order to build dynamic models for prediction and management of degraded Mediterranean forest areas was necessary to build MARIOLA model, which is a calculation computer program. This model includes the following subprograms. 1) bioshrub program, which calculates total, green and woody shrubs biomass and it establishes the time differences to calculate the growth. 2) selego program, which builds the flow equations from the experimental data. It is based on advanced procedures of statistical multiple regression. 3) VEGETATION program, which solves the state equations with Euler or Runge-Kutta integration methods. Each one of these subprograms can act as independent or as linked programs.



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