أخر تحديث للموقع بتاريخ: 19 نوفمبر 2018
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Flexible Perforated High Impedance Surfaces سعود بن محمد بن سعيد

Electromagnetic bandgap (EBG) structures are used to suppress surface wave propagation in printed antennas. However, due to the presence of vias, not all of them can be utilized in flexible radiators. Thus, a Perforated High Impedance Surface
(PHIS) is proposed which suppresses the surface waves without the need of vias, and it also serves as a ground plane for
exible antennas. The surface wave suppression and the antenna applications of the proposed PHIS surface are discussed.

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Flexible Antennas for Wearable Devices سعود بن محمد بن سعيد
Flexibility, recongurability and wearability technologies for antenna designs are presented, investigated and merged in this work. Prior to the design of these radiating elements, a study is conducted on several fexible substrates and how to fabricate fexible devices. Furthermore, the integration of active devices into the fexible substrates is also investigated. A new approach of designing inkjet-printed flexible reconfigurable antennas, based on the concept of printed slot elements, is proposed. An alternate technique to recongure the folded slot antenna is also reported. The proposed radiator works for both Wireless Local Area Network (WLAN) and Worldwide Interoperability for Microwave Access (WiMAX) applications. The flexible recongurable antenna is also redesigned to resonate at both (2.4/5.2 GHz) for WLAN devices and its Multiple-Input Multiple-Output (MIMO) conguration is reported. Two orthogonal elements are used to form the MIMO antenna system for
better isolation.

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Research Activities عبدالجليل محسن محمد شمام

My research interests are Power Electronics and Energy; Physics of electrical discharges used as light sources; Impact of lighting on energy; Interaction between light source and associated power supply; Active filter and power quality; Illumination and lighting; environment and quality of life.

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A Pyramid-Based Watermarking Technique for Digital Color Images Copyright Protection فرحان عنيد المعجل العنزي
A Pyramid-Based Watermarking Technique for Digital Color Images Copyright Protection Awad Kh. Al-Asmari ; Farhan A. Al-Enizi 2009 International Conference on Computing, Engineering and Information Year: 2009 Page s: 44 - 47 Cited by: Papers (2) IEEE Conferences

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Hybrid Pyramid-DWT-SVD Dual Data Hiding Technique for Videos Ownership Protection فرحان عنيد المعجل العنزي

Accepted for publication in: MULTIMEDIA  TOOLS  AND APPLICATIONS 2018

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3D mesh robust watermarking technique for ownership protection فرحان عنيد المعجل العنزي
3D mesh robust watermarking technique for ownership protection Farhan A. Alenizi ; Fadi Kurdahi ; Ahmed Eltawil 2017 51st Asilomar Conference on Signals, Systems, and Computers Year: 2017 Page s: 217 - 222 IEEE Conferences

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DWT-based watermarking technique for video authentication فرحان عنيد المعجل العنزي
DWT-based watermarking technique for video authentication Farhan Alenizi ; Fadi Kurdahi ; Ahmed Eltawil ; Abdullah Aljumah 2015 IEEE International Conference on Electronics, Circuits, and Systems (ICECS) Year: 2015 Page s: 41 - 44 Cited by: Papers (4) IEEE Conferences

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Simple plasma assisted atomic layer deposition technique for high substitutional nitrogen doping of TiO2 م. عبدالله حمود قاسم آل يتيم الشهري
Corrosion behavior of aluminum alloy joined by activated gas tungsten arc welding أبوسفيان محمد ويس

Aluminum and Aluminum alloys are used extensively in different industries such as transportation, automotive, marine and architectural applications owing to their good mechanical properties, light weight, high strength, appropriate weldability, high toughness, and their excellent corrosion resistance. As a part of the fabrication process, welding is one of the most important manufacturing technologies used in the aluminum alloy industry. However, the welding process can change the microstructure of aluminum alloy and chemistry of aluminum alloy, and could lead to deterioration in mechanical properties and affect the corrosion behavior of Aluminum alloys.
The purpose of this research is to study the corrosion behavior and the mechanical properties of welded Aluminum alloy.

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SPARE PARTS MANAGEMENT BY USING ANALYTIC HIERARCHY PROCESS خالد محمد سليمان جادالمولى
Spare parts management plays an important role in achieving the desired plant availability at an optimum cost.  It has been observed in many industries that the non-availability of spare parts, as and when required for repairs, contribute to as much as 50% of the total down time and also cost more than 50% of the total maintenance cost. Therefore, the first objective of this paper is to identify the control characteristics of spare parts such as criticality and specificity.  The second objective is to propose a multi-criteria decision making model to quantify the criticality of spare parts.  The third objective is to propose a multi-criteria decision making model to develop a manufacturing strategy of spare parts.  The proposed models are based on the analytic hierarchy process (AHP) using the Expert Choice software.  Finally, a case study will be conducted at general water desalination establishment to validate the proposed models.  These models will help the decision maker to select the right strategy which will lead to reduce the total down time and total maintenance cost.  ...
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