5153 research outputs found
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Energy-Efficient Service-Oriented Architecture for Mobile Cloud Handover
No full textMobile cloud computing uses features to deliver outsourcing data to remotely available mobile devices. However, the flexible nature of the mobile device is a critical challenge for the mobile cloud computing environment. The mobile phone significantly degrades the data transfer performance when initiating the handover process. Thus, an energy-efficient handover process could improve the quality of service (QoS). Here, we introduce a secure energy-efficient and quality-of-service architecture (EEQoSA) for the handover process in the mobile cloud computing environment. The proposed architecture involves four layers: application, the Internet protocol multimedia subsystem (IPMS), communication, and media with connectivity layers. These four layers collectively handle the energy-efficiency, security and QoS parameters. Existing service-oriented architectures designed for mobile cloud computing are based on the symmetric encryption cryptography to support different media services. However, this approach easily allows an adversary to expose the symmetric key and gain access to private data. Thus, our proposed architecture uses the secure and strong authentication (SSA) process at the IPMS layer by protecting the media services from unauthorized users, as the IPMS is the central layer that could be the entry point for an adversary. Furthermore, to extend the mobile lifetime during the handover process, an energy detection (ED) model is deployed at the communication layer to detect the energy level of the mobile device prior to the handover initialization process. The media with the connectivity layer supports the secure handover process using a priority enforcement module that allows only legitimate users to complete the re-registration process after initiating the handover. Finally, the architecture is tested using the CloudSim simulation environment and validated by a comparison with other known service-oriented architectures.https://doi.org/10.1186/s13677-017-0079-
Event detection on large social media using temporal analysis
No full textThe problem of event detection based on social media has attracted researchers’ attention recently because of the enormous popularity of social media. Existing approaches focus on features that don’t reflect full characteristics of the social network. For the purpose of this research, we define an event as an occurrence that has enough force and momentum that could create an observable change of the context of a social network. Such a definition provides us with a wider perspective through which we can view the big picture of the social network. In this research, we propose a novel framework for detecting events on social media. We introduce a temporal approach to detect structural change of the social network that reflects an occurrence of an event using machine learning algorithms. In this study, we show that processing temporal social networks captures the complete complexity of the social network, which results in a higher accuracy of event detection
Design Of An Active Cpu Cooler Design Incoprating Heat Spreader
No full textThis poster designed an active heat sink to cool a silicon CPU that dissipates 130 W of heat. The active CPU cooler is composed of a fan sitting above the heat sink, an aluminum radial heat sink, a copper heat spreader at the base of the heat sink and a copper core inside the heat sink. Various designs with different fin thickness, fin numbers and thermal spreader thickness were studied and the best design was selected. The selected design had 40 fins of 2mm thickness, and a Ø65mm thermal spreader with a thickness of 2mm. Parametric study was done on the selected design to see how the maximum temperature of the CPU varied when the thermal spreader diameter, copper core height and fan speed by the CPU was varied. All the studies conducted proved that the selected design was validated
The Place Of Earth And Space Science And Engineering Design In The Next Generation Science Standards
No full textThe Next Generation Science Standards (NGSS) were recently adopted by the state of Connecticut. This paper describes the status of Earth and Space Science (ESS) and Engineering Design (ED) within the NGSS in the state of Connecticut. In this research, Connecticut District Science Coordinators were targeted. They were given questionnaires through Survey Monkey to obtain their views and experiences on the issue of teacher preparedness. Results showed that the ESS and ED did not yet occupy a high position in the state curriculum. There are several challenges to be faced to have ESS and ED status improved in the state. The adoption in itself was seen to be a clear indication that ESS and ED will gradually assume a high recognition in the curriculum of Connecticut schools
Hope for Haiti: Enriching Relationships With Design Thinking
No full textHope for Haiti is a non-profit organization dedicated to improving the quality of life for the Haitian people, mainly children. Their activities and services are all funded by key donors and philanthropic partners and investors. The organization aims is to create sustainable communities that catalyze generational and transformative change by focusing on five core areas within the Greater South of Haiti. These core areas are education, economy, health care & nutrition, infrastructure, and clean water. Our project aims to empower the Haitian people and attract key donors to support Hope for Haiti. We achieved this by applying the design thinking process
Data Privacy-AES Using Secure Hashing
No full textSecuring personal data in the public spaces is something to worry about, in particular, the privacy and the confidentiality. The Internet of Things (IoT) will be widespread all over the network to connect devices and the people through the Internet. However, maintaining privacy in public places has become a difficult task in the day-to-day life. This work is mainly concerned about the privacy and the confidentiality of the personal data in the public places
Study and Analysis of Shaping Tool Fixture
No full textThis poster introduces the new techniques to achieve the complicated operations done with the help of fixtures. The computer-aided structural analysis and simulations have been performed to study the stress and deformation of mechanical components in assembly process
Efficient Actor Recovery Paradigm for Wireless Sensor and Actor Networks
No full textThe actor nodes are the spine of wireless sensor and actor networks (WSANs) that collaborate to perform a specific task in an unverified and uneven environment. Thus, there is a possibility of high failure rate in such unfriendly scenarios due to several factors such as power consumption of devices, electronic circuit failure, software errors in nodes or physical impairment of the actor nodes and inter-actor connectivity problem. Therefore, it is extremely important to discover the failure of a cut-vertex actor and network-disjoint in order to improve the Quality-of-Service (QoS). In this paper, we propose an Efficient Actor Recovery (EAR) paradigm to guarantee the contention-free traffic-forwarding capacity. The EAR paradigm consists of a Node Monitoring and Critical Node Detection (NMCND) algorithm that monitors the activities of the nodes to determine the critical node. In addition, it replaces the critical node with backup node prior to complete node-failure which helps balancing the network performance. The packets are handled using Network Integration and Message Forwarding (NIMF) algorithm that determines the source of forwarding the packets; either from actor or sensor. This decision-making capability of the algorithm controls the packet forwarding rate to maintain the network for a longer time. Furthermore, for handling the proper routing strategy, Priority-Based Routing for Node Failure Avoidance (PRNFA) algorithm is deployed to decide the priority of the packets to be forwarded based on the significance of information available in the packet. To validate the effectiveness of the proposed EAR paradigm, the proposed algorithms were tested using OMNET++ simulation.https://doi.org/10.3390/s1704085
Assessing Causes for the Poor State of Women’s Rights in Egypt
No full textThe Arab Republic of Egypt is among the more culturally progressive countries within the Middle East. Influenced heavily by globalization through its close relationship with the United States, Egypt tends to take a more open stance to many issues; a simple walk down most any street in Cairo reveals the deep intrusion of Western culture into Egyptian society. However, despite Egypt’s alignment with more liberal values than its neighbors, women’s rights abuses are common and Egyptian women’s participation in the economy and politics are minimal. The oppressed position of women in Egypt has a strong cultural basis that is essentially Egyptian in origin, takes expression in economic and political forms which subsequently reinforce the foundational cultural bias, and is justified in some cases through highly localized interpretations of Islam