https://scholar.ptuk.edu.ps/handle/123456789/100 2026-04-29T17:01:01Z https://scholar.ptuk.edu.ps/handle/123456789/980 Title: A Novel Approach to Support Scalable Multicast Routing in Wireless Ad Hoc Networks Authors: Qabajeh, Mohammad Abstract: Nowadays, group communications over Mobile Ad hoc Networks (MANETs) have received significant attention. Multicasting plays an important role in simultaneous delivery of information to group of receivers. Thus, it is necessary to design efficient and effective multicast routing protocol to support group communication applications. Several efforts have been put to improve multicast routing. However, they do not consider scalability issue. This paper introduces a a novel Scalable Geographic Multicast Routing Protocol (SGMRP). The main objective of this protocol is to design a lightweight scalable multicast routing scheme irrespective of the number of multicast members and network size. To achieve this, a virtual clustering strategy has been introduced. This strategy based on partitioning the network into sectorial zones. The proposed solution performs efficient packet forwarding with reduced communication overhead. The proposed scheme eliminates the duplicate packets between clusters and reduces the number of participating nodes 2022-04-05T00:00:00Z https://scholar.ptuk.edu.ps/handle/123456789/687 Title: Solid-State Transformers for Distribution Systems: Technology, Performance, and Challenges Authors: Saleh, S.A.; Richard, C; Onge, X. F. St.; McDonald, K.; Ozkop, E.; Chang, L.; Alsayid, Basim Abstract: Solid-state transformers (SSTs) are an emerging technology that has been developed for modern distribution systems. These new transformers are composed of a medium ac voltage (MV) stage, a dc stage, and a low ac voltage (LV) stage. Passive and active dc-links are used in SSTs to support new transformer functionalities, including hybrid (ac and dc) distribution, reactive power compensation, voltage/frequency regulation, power quality improvement, and distributed generation interconnection. However, a SST has to have one of its stages connected to a MV level, which mandates certain converter topologies and/or switching element capabilities. In addition, the dc-link stage has to provide isolation between the MV and LV levels, which requires the employment of isolated dc-dc power electronic converters (PECs). This paper provides a review of SSTs for distribution systems, in terms of the required technology, possible functionalities, performance, and challenges for SSTs and their host distribution systems. 2019-05-01T00:00:00Z https://scholar.ptuk.edu.ps/handle/123456789/686 Title: State-of-the-Art Methods for Detecting and Identifying Arcing Current Faults Authors: Saleh, S.A.; Valdes, M. E.; Mardegan, C.; Alsayid, Basim Abstract: This paper reviews approaches used to detect and identify arcing currents, including arcing current faults. The reviewed approaches are categorized as the time-domain, frequency-domain, and time-frequency approaches. The time-domain approach extracts shoulders (zero values of the current around zero crossing points), spikes and jumps, abnormal magnitudes (lower or higher than normal), and high rate of change of the current. The frequency-domain approach extracts the high frequency components, harmonic components, sub-harmonic components, and cross-correlation indicator. The time-frequency approach extracts high frequency sub-bands that contain nonstationary frequency components, which may have non-stationary phases. The three approaches are implemented to test their accuracy, computational requirements, and sensitivity to system parameters. These tests are performed by off-line processing of currents that are collected for normal and dynamic conditions, conventional faults, and currents with high or low arcing components. Test results provide a performance comparison for the tested approaches. 2019-05-01T00:00:00Z https://scholar.ptuk.edu.ps/handle/123456789/676 Title: The effect of the use of interactive smart board for TE pre-service teachers in a micro-teaching environment in the Palestinian universities Authors: Qassrawi, Husam; khalili, Amjad; Salhab, Reham; Simmons, Jacqueline; Sabha, Muath Abstract: This paper describes the conceptual background, approaches, and reports some initial finding as it investigated the potential of using interactive white boards (IWB) in a microteaching lab considering that the smart board usage is new in the Palestinian universities. It aims to understand the usage of IWB for instance, wikis, and blogs in teaching and learning processes. Mixed method design is considered for data collection purposes. Approximately 20-25 pre-service teachers in technology education from three technology universities in Palestine namely PTUK, NNU, PTCA were considered for the interview and the established survey. Items included questions regarding the theme of smart board, knowledge, experience and opinion regarding IWB. Nine items were included in the developed interview. Findings included that students were satisfied from the use of IWB as new ad further training is requested. Besides, further research to be conducted in the real classroom-teaching environment. 2012-10-21T00:00:00Z