Television (TV) broadcasting stations radiate signals to the surrounding areas using free space. These signals are received using appropriateTV reception antennas. The energy level of radio signals decrease rapidly as the distance between the transmitter and the receiver antennas increases. In the light of the importance of television broadcasting to the socio-economic development of the populace, viewer's interest has shifted and grown from just watching anything on the screen to qualitative, clear and sharp signals on the television screen. This researchcaptures part of the data obtained from measuring the Signal Strength of two TV stations operating at UHF band in a metropolitan environment in Nigeria.......

Keywords: TV stations, Signal Strength, Electric Field, UHF band, Longitude, Latitude, Elevation.

Companies often purchase inexpensive and simple items. To efficiently and economically utilize resources, organizations must have proper management of their purchases. This study adopted a qualitative approach and an investigation procedure associated with a bibliographic research. It reports, therefore, a qualitative analysis aimed at acquiring and developing knowledge that can be applied in the purchasing sector of a small-scale land developer located in Fortaleza (CE). The general objective of this case study is to investigate how to structure and organize processes in the supply sector of a land developer and suggest improvements that can reduce costs and enhance purchasing processes.......

Keywords: Efficiency, Economy, Purchasing processes, Costs, Competitiveness.

This study was designed to study the morphological and physiological of two plants of growing at different regions (Coastal and Semi desert area) around Al –Gabal Al-Khder regions, Libya. Where the comparing between some characterization as leafs area , plant high , leafs color, regiments starch and carbohydrate contents were estimated. The morphological and physiological properties showed variations of some properties as leafs area steams high and starch , on the other hand no wide variations observed of some other properties as pigments and carbohydrate .The study recorded variations in the physiological characterizations between stems and leaves of the selected plants of the two studied regions. The effect of climate changes between the regions mainly is most factor which affecting of the contents of the studied characterizations.

This study aims to measure the levels of Cortisone in various of beauty cream samples collected from the local markets of Al-Bayda city (Libya), where ten types were purchased from different Al-Bayda markets from different companies. The concentrations of SLS in personal care products ranged between (124 – 844 ppm). The results recorded wide variations in the Hydrocortisone contents between the studied samples. Generally , the contents were ranged between ( 124 – 844 ppm). The higher value was recorded in the sample (844 ± 2.64 ) , No ( 2) .While the lower contents was recorded in the sample ( 124± 1 ) , No( 10). The results showed some difference between the concentrations of cortisone in the studied samples.

This scientific paper focuses on the development of a personalization system of mathematical tasks for students through artificial intelligence (AI). The main goal of this project is to improve the student's experience in learning mathematics by offering an individualized and adaptive approach. To achieve this goal, an AI algorithm has been implemented which analyzes the unique abilities and skills of each student in mathematics. Based on the analysis of this algorithm, the system prepares and offers personalized mathematical tasks, adapted to the level of knowledge of each student. This is a quantitative and qualitative study that uses an experimental design to compare the performance of a group involved in mathematics learning using a personalizing AI.......

Keywords: AI, Mathematics, Personalization of tasks, Student.

Based on the analysis of the current problems in emergency response research, this paper proposes and constructs an urban emergency response route algorithm based on the spatial reachable search. Firstly, geographic information data was collected from urban emergency shelters and residential gathering places, and a spatial accessibility model for residential gathering places was established. On the basis of constructing a spatial accessibility model, a spatial clustering model for residential gathering places was constructed to explore the spatial relationship between emergency shelters and residential gathering places. On this basis, an optimal emergency route algorithm was constructed between residential gathering places and emergency shelters in spatial clustering clusters, outputting the shortest emergency shelter route, providing a scientific basis for urban emergency management and decision-making.

Keywords: Space accessibility, Urban emergency response, Emergency response, Emergency route.

In this study, the grid partitioning practice was employed to generate the Sugeno-based FIS structure in order to launch a relationship among the input factors, and output responses contingent on specific framed rules and an optimum training of the neuro-fuzzy algorithm were contingent on the hybrid learning technique. The performance of the Sugeno was estimated by feeding the input dataset to the fuzzy interface system, and the output response was characterized with reference to a co-relation matrix among the actual and predicted values. The ANFIS model revealed its adeptness with a higher.......

Keywords: ANFIS, machine learning, NOx, CO, NSE, KGE, Theil U2.

This paper investigates the current situation of the construction of the Bashu Cultural Corridor through field visits and questionnaire surveys, and finds that there are some problems in the construction of the Bashu Cultural Tourism Corridor, such as the imperfect cross-regional coordination mechanism, the insufficient depth of cross-regional cooperation, and the insufficient guarantee of cross-regional coordinated development.

Keywords: Bashu Cultural Corridor,Tourism development,Countermeasure research.

We simulated a device of solar cells that is based on Tin Selenide (SnSe) with configurations of standard planar (AZO/i-ZnO/CdS/SnSe/NiO) and (AZO/i-ZnO/ZnSe/SnSe/NiO) using the SCAPS-1D simulating software and compared several parameters of these solar cells. We used ZnSe instead of CdS to design the proposed cell, and it shows that the electrical properties of ultra-thin SnSe-based solar cells provide better characteristics along with the ZnSe buffer layer in comparison to the reported CdS buffer layer. The parameters of SnSe-based solar cells are investigated with the thickness of the absorber layer and buffer layer.......

Keywords: Window Layer, Buffer Layer, Window Layer-AZO, Buffer layer n- ZnSe tyling, Quantum Efficiency.

This paper proposes an Internet of Things (IoT) based smart notice board designed for remote content management and display. The system utilizes an AVR ATmega8 microcontroller for core processing and an ESP8266 Wi-Fi module for wireless communication. A crystal oscillator ensures accurate clock timing, while an LED display panel showcases the information. The paper delves into the hardware design, including a custom power supply circuit, and explores potential communication protocols between the microcontroller and Wi-Fi module. Software development aspects for the microcontroller are briefly addressed. This research contributes to the development of cost-effective and versatile digital signage solutions suitable for various public and private applications.

Keywords: Wi-Fi connectivity, Communication protocol, AVR microcontroller, Rolling LED display.