Fractal geometries are attractive for antenna designers seeking antennas with compact size and multiband resonant behavior. This paper presents the design of a new microstrip-fed printed slot antenna for use in dual-band wireless applications. The slot structure of the proposed antenna is in the form of Cantor square fractal geometry of the second iteration. The slot structure has been etched on the ground plane of a substrate with relative permittivity of 4.4 and 1.6 mm in thickness. A parametric study is conducted to explore the effects of some geometrical parameters on the antenna performance. Results show that the antenna possesses a dual-band behavior with a wide range of resonant frequency ratio. In addition to the ease of fabrication and simple design procedure, the antenna offers desirable radiation characteristics. A prototype of the proposed antenna has been simulated, fabricated, and measured. The measured 10 dB return loss bandwidths for the lower and the upper resonant bands are 42% (2.35–3.61 GHz) and 20% (5.15–6.25 GHz), respectively. This makes the proposed antenna suitable to cover a number of operating bands of wireless systems (2.4 GHz-Bluetooth, 2.4 GHz ISM, 2.4/5.8 GHz-WLAN, 3.5 GHz-WiMAX, and 5.8 GHz-ITS).
In this paper, besides an overview of e-Government and cloud computing services in Iraq, an applied survey to establish relevant prospects of the Iraqi citizens for e-Government and cloud computing services was adopted. Moreover, to study the potential putting into practice of e-Government and cloud computing services based on citizen identification in Iraq. Based on survey results, 112 different e-Services were proposed by qualified Iraqi citizens. The requested e-Services were highlighted based on a provided statistical list in this paper. This paper can be an essential step to enhance e-Government and cloud computing functionaries in Iraq consistent with the citizen's outlooks and discover technical and nontechnical barriers that delay the development of Iraqi e-Government and cloud computing. Lastly, the accomplishment of e-Government and cloud computing imposes several essential tools as in Information and Communication Technology (ICT). The development scheme in this paper involves three years to improve the Iraqi e-Government database and offer the advantageous capability of ICT to all responsible persons and citizens based on Standard Materials and International Certificates.
Distributed transformers are imperative equipment in power networks. Due to large amount of transformers distributed over a widespread area in power electric systems, the data acquirement and condition monitoring is essential concern. In spite of security and automation in plants, industrial environment is relatively critical for machines and humans. This study deals with a safety in industrial condition. A model has been designed to detect dangerous situations like breakdown that is the most essential parameter for occurring leakage current in substation and gas leakage based on faults data source file from distinguished sources. Reached outcome will be executed in IoT (Internet of Things) gateway design, to augment technical implementation with scalability. It consists of Node-MCU, node red server, mosquito server that serves as negotiator amid Node-MCU and node red server and Thingspeak IoT platform. Data processing has been completed at Thingspeak IoT platform so that the monitored quantity can be displayed frequently or at scheduled intervals of time. These processed results have been statistically further analyzed using SPSS software package.
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