Emerging wireless communication standards and more capable sensors and actuators are pushing the development towards wireless sensor networks (WSNs). Deploying a large number of sensor nodes requires a high level framework enabling the devices to present themselves and the resources they hold. The device and the resources can be described as services. With a service discovery protocol, resources, e.g. samples of data produced by the sensor, could be provided to the application developers through high level interfaces. Service discovery protocols enable software, i.e. services and service users, to dynamically advertise and find available services on the network. The Tiny Service Discovery Protocol (TinySDP), as its name suggests, is a lightweight protocol that allows discovery and selection of services in WSN. Here, we have analyzed the TinySDP protocol with mobile WSN since adding mobility to sensor networks can significantly increase the capability of the sensor network by making it resilient to failures, reactive to events, and able to support disparate missions with a common set of sensors. In this paper, we perform analytical simulations in terms of Success ratio, number of transmitting messages and average waiting time. Simulation results show that the performance of TinySDP in mobile WSNs (MWSNs) has been decreased. As a result, we present Modified TinySDP (MTinySDP) for MWSNs. The simulation results show that MTinySDP outperforms TinySDP in terms of Success ratio, number of transmitting messages and Average waiting time for mobile and static WSN.
Indexing terms/Keywords : Wireless Sensor Network (WSN), Service Discovery Protocol (SDP), Mobility, TinySDP, TOSSIM, TinyViz
Academic Discipline And Sub-Disciplines : Information Technology, Networking, Protocols
SUBJECT CLASSIFICATION : Wireless Sensor Network

Network is a technology used to connect computers and devices together. They allow people the ability to move easily and stay in touch while roaming the Internet in the coverage area. This increases efficiency by allowing data entry and access to the site. Comparing wireless networks wired networks in terms of cost, we find that wired networks are more expensive due to the cost of the network connections of electricity and running and add computers and change their positions to suit the network supply. As a result, the use of widespread wireless networks. But there are security gaps in these networks may cause problems for users Security holes intended problem or weakness in the wireless network system may make it easier for hackers to penetrate and steal sensitive data and causing material losses to individuals and companies. Knowing security holes and contributes significantly to the wireless network is immune from attempts to infiltrate and penetration design.
Keywords /Protocol: Language is between computers connected via the network, in order to exchange information. If we define the language of the Protocol technology, we say that a formal description of the bodies messages and rules that must be followed on two computers to exchange those messages.

A Hydraulic analysis was performed to estimate sediment transport rates for the Euphrates River at a specified reach in (Al- Hindiya city). Information presented in this study includes surveyed channel cross sections, discharge, stages, and measurements of bed material characteristics. The study reach was between station (Km 625+200) upstream and station (Km 639+200) downstream with a length of (14) km. This reach includes (20) cross sections. HEC-RAS (4.1) package was used and applied for modeling and calculating the sediment transport by (Ackers-white, Engelund-Hansen, Laursen, Toffaleti, and Yang) formulas. Hydraulic computations existing in HEC-RAS4 were used to compute a series of steady flow profiles (13 profiles).These profiles used to develop hydro-dynamic parameters for sediment transport and calibrated to the hydraulic conditions of the reach. A stable solution for sediment transport rates was obtained under specified conditions. The modeling formulas were compared with the field results and the closest formula to the field results was (Laursen), while (Ackers-White) formula was the poor one while the other samples give lower results than the field values with a bit of convergence in some of these results which had been obtained through statistical method. The average annual sediment transport has been predicted by (Laursen) formula using HEC-RAS (4.1) model to be (3376) tons.
Keywords: Sediment, transport, One-dimensional model, HEC-RAS, River

Factors of success are aimed to provide knowledge-intensive organisations to better manage their knowledge value. There are multiple ways to capture organization’s knowledge and make it available to all their members while it is not easy to capture/share the tacit knowledge among the stakeholders. The purpose of this study was to investigate the impact of factors of success on the in-house software development for preserving tacit knowledge. We conducted a survey to study the impact of these five factors on the tacit knowledge sharing between the developers within the in-house software development environment. This paper is firstly exploring the definition of the knowledge and introducing the types of knowledge those are explicit and tacit knowledge. We discuss the in-house software development concept in which the non-IT organizations may need to develop their own software internally with no need to have a third party software development organization. For tacit knowledge sharing, we considered four factors reviewed in other researches and we added to them the pair programming as a practice. Case study is local bank in Palestine. Based on the results we have, it is confirmed the hypothesis of a positive impact of factors of success on the process of knowledge sharing.
Indexing terms/Keywords Tacit Knowledge, Knowledge Sharing, Nontechnical Aspects, Software Development Practices, Pair Programming, Factors Of Success

 Abstract— Wireless multimedia sensor networks (WMSNs) became widely popular because of the availability of low-cost easy-to-use multimedia sensors and devices capable of retrieving and transmitting multimedia content like sound, images and video streams. Simulation of WMSN has followed techniques and tools that are mainly used by similar wireless sensor networks (WSN). This, unfortunately, was not sufficient for the data-intensive nature of WMSN. Therefore, it is still challenging to provide sufficient simulation frameworks for WMSNs. This paper presents a survey of available simulation frameworks and tools for WMSNs. The challenges facing the simulation process are first introduced. Then, the attributes of the ideal WMSN simulation are presented and reviewed. The general model of WMSN simulation environments are also presented and discussed. Finally, a detailed survey of available simulation frameworks and tools are presented. Tools that are inherited from wireless sensor network (WSN) and those made specially for WMSNs are also presented.
Key words: Wireless Sensor Networks, Wireless Multimedia Sensor Network, Video Sensor Network, Simulation, Survey.