ERAMIS: A Reference Architecture-based Methodology for IoT Systems

Opportunities arising from IoT-enabled applications are significant, but market growth is inhibited by concerns over security and complexity. To address these issues, we propose the ERAMIS methodology, which is based on instantiation of a reference architecture that captures common design features, embodies best practice, incorporates good security properties by design, and makes explicit provision for operational security services and processes

Secure Cloud Storage: A Framework for Data Protection as a Service in the Multi-cloud Environment

This paper introduces Secure Cloud Storage (SCS), a framework for Data Protection as a Service (DPaaS) to cloud computing users. Compared to the existing Data Encryption as a Service (DEaaS) such as those provided by Amazon and Google, DPaaS provides more flexibility to protect data in the cloud. In addition to supporting the basic data encryption capability as DEaaS does, DPaaS allows users to define fine-grained access control policies to protect their data. Once data is put under an access control policy, it is automatically encrypted and only if the policy is satisfied, the data could be decrypted and accessed by either the data owner or anyone else specified in the policy. The key idea of the SCS framework is to separate data management from security management in addition to defining a full cycle of data security automation from encryption to decryption. As a proof-of-concept for the design, we implemented a prototype of the SCS framework that works with both BT Cloud Compute platform and Amazon EC2. Experiments on the prototype have proved the efficiency of the SCS framework

Analysis of human resource management in an electronic financial system

In recent decades, studies conducted by researchers suggest that information and communication technologies have had a profound impact on human resource management. Experts believe that electronic Human resource management can potentially reduce administrative costs, increase productivity, shorten response times, improve customer service and develop decision-making process and therefore helps human resources management to be more strategic, flexible, and also more affordable in terms of cost. Today, the necessity of using Automated financial system, due to its potentiality of quick timely and accurate access to information, is clearly evident in most companies and organizations. So that, considering information needs and presence of the computer requires the use of Automated Systems. This study examines the impact of e-HR management systems of accounting, auditing and financial systems as well as other related issues in this context. In the present study the concept of Electronic Human Resource Management, analysis of the impacts of this technology on financial systems, the process of tax systems improvement, update information and financial statements is analysed and solutions and suggestions provided to improve these relationships

Analysis of human resource management in an electronic financial system

In recent decades, studies conducted by researchers suggest that information and communication technologies have had a profound impact on human resource management. Experts believe that electronic Human resource management can potentially reduce administrative costs, increase productivity, shorten response times, improve customer service and develop decision-making process and therefore helps human resources management to be more strategic, flexible, and also more affordable in terms of cost. Today, the necessity of using Automated financial system, due to its potentiality of quick timely and accurate access to information, is clearly evident in most companies and organizations. So that, considering information needs and presence of the computer requires the use of Automated Systems. This study examines the impact of e-HR management systems of accounting, auditing and financial systems as well as other related issues in this context. In the present study the concept of Electronic Human Resource Management, analysis of the impacts of this technology on financial systems, the process of tax systems improvement, update information and financial statements is analysed and solutions and suggestions provided to improve these relationships

The metal-insulator transition in the amorphous silicon-nickel system.

Amorphous thin films of Si1-yNiy:H have been prepared over a wide range of compositions by radio-frequency sputtering in an argon/hydrogen plasma and their properties studied by various techniques. Transmission electron microscope investigations confirmed that the films were amorphous and the composition of the films was determined by EDAX. The principal object of the study is to investigate the nature of the semiconductor-metal transition in the a-Si1-yNiy:H system. The system has been shown to exhibit a semiconductor-to-metal transition as a function of concentration at approximately y = 0.26 at which value the optical gap shrinks to zero and beyond which the reflectivity falls with increasing photon energy in the region 0.5 - 2 eV, i.e becomes Drude-like. D.C. electrical conductivity measurements as a function of temperature show an increase in conductivity and a decrease in activation energy with increasing nickel content which is close to zero for y 0.26. The optical joint density of states (OJDOS) is finite at all energies for y ~ 0.26, confirming the existence of overlap between the conduction and valence bands. Pressure-induced transitions from semiconductor-to-metallic behaviour of the a-Si1-yNiy:H films have been investigated by measurements of the optical absorption edge as a function of pressure in a diamond anvil cell and by measurements of the electrical conductivity in a Bridgman opposed-anvil apparatus, both at room temperature. The optical gap decreases with increasing pressure, becoming zero at pressures that are lower the higher the nickel content. The electrical conductivity increases with applied pressure for all samples studied, reaching a saturation value close to the Mott's minimum metallic conductivity; this also occurs at lower values of the pressure for films with higher nickel content. Information on the structure and the local bonding configurations for the a-Si1-yNiy:H films was obtained from EXAFS and IR measurements. The results indicate that there is a significant change in the local environment of the Ni atoms as their concentration is changed but the system appears to favour chemical ordering

DEMODS: a description model for data-as-a-service

has become popular. Several data assets have been released in DaaSes across different cloud platforms. Nevertheless, there are no well-defined ways to describe DaaSes and their associated data assets. On the one hand, existing DaaS providers simply use HTML documents to describe their service. This simple way of service description requires user to manually perform service lookup by reading the HTML documents to understand DaaSes as well as their provided data assets. On the other hand, existing service description techniques are not suitable for describing DaaSes because they consider only service information. The lack of well-structured/linked model to describe DaaSes hinders the automatic service lookup for DaaSes and the integration of DaaSes into data composition and analytic tools. In this paper, we propose DEMODS, a DEscription MOdel for DaaS, which introduces a general linked model to cover all basic information of a DaaS. Besides the basic DaaS description model, we also introduce an extended model that integrates existing work in describing quality of data, data and service contract, data dependency, and Quality of Service (QoS). We present a mechanism to incorporate DEMODS into both new and existing DaaSes. Finally, a prototype of DEMODS has been developed to evaluate the effectiveness of the proposed model. Keywords- Cloud computing, Data-as-a-Service (DaaS), data marketplace, service and data description, discovery