Abstract Cloud services are designed to provide scalable access to applications, resources and services, and are fully managed by cloud service providers. On-demand cost-effective services are offered such as software as a service, infrastructure as a service and platform as a service. Despite the promising facilities and benefits of these services, most organizations and companies are worried about accepting to use... Cloud services are designed to provide scalable access to applications, resources and services, and are fully managed by cloud service providers. On-demand cost-effective services are offered such as software as a service, infrastructure as a service and platform as a service. Despite the promising facilities and benefits of these services, most organizations and companies are worried about accepting to use them due to security issues and challenges within the cloud like data security, abuse of cloud services, malicious insiders and cyber-attacks. In order to fulfill organization data security requirements, protect organization assets and win the trust of cloud service consumers, models should be designed to solve organizational and distributed aspects of information usage stored in a cloud and to protect them against unauthorized access and modification. However, various access control models have been developed such as: role-based models, attribute-based encryption models and multi-tenancy models. In spite of such model diversity, cloud dynamic and distributed access control requirements may not be fulfilled, for several reasons: (i) the user-resource relationship is dynamic in the cloud. (ii) Service providers and users are typically not in the same security domain. (iii) The multi-tenant hosting and heterogeneity of security policies. In this paper, a novel access control model using the technology of mobile agents for cloud computing is presented to meet the distributed access control requirements. It aims to protect the sensitive data of cloud service consumers, to guarantee the availability of cloud service providers’ as well as the confidentiality and integrity of costumers’ data and to secure sharing resources. Read More Read Less

Abstract With the rapid advancements of technology, online surveying becomes a topic of great concern today and should be given much attention. Online surveying identifies a person and is permanently associated with the person and there will be a big blunder if the online surveying is compromised. So, it becomes the prime responsibility of an organization to store the online surveying features in a... With the rapid advancements of technology, online surveying becomes a topic of great concern today and should be given much attention. Online surveying identifies a person and is permanently associated with the person and there will be a big blunder if the online surveying is compromised. So, it becomes the prime responsibility of an organization to store the online surveying features in a secured manner way. There are various approaches for generating online surveying tools and the template that ensures the protection as well as the merits and demand. Surveying systems are recent advancements in the field of online surveys and template protection which have strengthened public confidence and acceptance of overall the entire world. Read More Read Less

Abstract In order to provide more easiness of access, facilities and user-oriented for tutorials, registrations and examination, Universitas Terbuka (an Indonesia Distance Learning University) creates learning material based on Android device application. It is a new platform in distance education system and in line with the increase usage of smart phone in Indonesia, not only in communication but also in learning purpose. The fact... In order to provide more easiness of access, facilities and user-oriented for tutorials, registrations and examination, Universitas Terbuka (an Indonesia Distance Learning University) creates learning material based on Android device application. It is a new platform in distance education system and in line with the increase usage of smart phone in Indonesia, not only in communication but also in learning purpose. The fact revealed that more than 10.000 users had downloaded this application in the beginning of 2017. This paper aims to explore the implementation of android device application in digital teaching material. This paper evaluated the platform’s effectiveness and efficiency through 6 measurements; they are system quality, number of users, purposes, simplicity, user-oriented of application and time of use. It employed 55 respondents as the sample by using questionnaire, interview and applied a descriptive conceptual. The conclusion that the application of Android Based Digital Teaching Materials is really help students at the Universitas Terbuka in Indonesia to understand and comprehend materials for online learning, face to face tutorial and also final examination. Read More Read Less