Measurement System and its Suitability for Examining Indoor Millimeter Wave Propagation at (28–33GHz)
Conference paperThe purpose of this study is to determine the suitability of system measurements on indoor radio wave propagation at (28–33GHz) which might be used by 5G communication.
Ahmed Ben Alabish, Abduelbaset Mustafa Alia Goweder, (05-2021), IEEEAccess: 2021 IEEE 1st International Maghreb Meeting of the Conference on Sciences and Techniques of Automatic Control and Computer Engineering MI-STA, 1-4
DKED modelling of Human body blockage of 5G system link at 32 GHz
Conference paperThis paper is the continuation of a research carried out by Alabish et.al, which depicts the scattering objects effects on a blocked indoor wireless 5G link by a human body using a simple approach. Some measurement were made on the scattering effects due to having an object close to the link in this case it is a human body. In this paper, more measurements were conducted at 32 GHz. The double knife-edge diffraction (DKED) model was used in order to foresee the attenuation due to human body. To test the prediction precision of the model, simulation was then compared with measurements. The obtained results indicate that the assumed simple models for the indoor links performed well.
Ahmed Hassen ELjeealy Ben Alabish, (05-2021), IEEEAccess: 2021 IEEE 1st International Maghreb Meeting of the Conference on Sciences and Techniques of Automatic Control and Computer Engineering MI-STA, 1-4
Characterizing the effects of human body blockage and scattering objects for 31and 33 GHz indoor 5G link
Conference paperThis paper is concerned with studying the effects of human body blockage as well as surrounding objects scattering effects for an indoor 31 and 33 GHz link utilizing the Double Knife Edge Diffraction (DKED) model for diffraction effect on received signal.
Ahmed Hassen ELjeealy Ben Alabish, (05-2021), IEEEAccess: 2021 IEEE 1st International Maghreb Meeting of the Conference on Sciences and Techniques of Automatic Control and Computer Engineering MI-STA, 1-4
Generalization of the Drude model
Journal ArticleIn this paper we introduce a new fractional generalization of the
Smith's formula for the classical generalization of the Drude
equation. The generalized Drude formula described was proposed
originally to account for the unusual behavior of the optical
properties of mercury and its amalgams, it can be used for liquid
tellurium and some quasicrystals.
Mohsan Salah Amara Eldakli, (04-2021), International Science and Technology Journal: مركز العلوم والتقنية للدراسات, 25 (2), 392-400
Linear Fractional Distributed Order Based Derivative and Entropy
Journal ArticleTwo new fractional entropy functions, first, based on extension of
Ubriaco and Shafee approach, and second, the generalization
through the use of concept of expansion of linear fractional
distributed order derivative, is proposed. The first entropies are the
two-parametric functions. The second entropy is a linear
combination of the above functions. Then they have the same
properties as the Shannon entropy except additivity. For q1, q2
(0,1], these entropies satisfy the third law of thermodynamics in
the Bento sense, and, for q1 ≤ 1 and q2 ≥ 1, the Lesche stability
criteria.
Mohsan Salah Amara Eldakli, (04-2021), International Science and Technology Journal: مركز العلوم والتقنية للدراسات, 25 (2), 432-445
Correlation between Relative Grain Yield of Two Local Wheat Genotypes and phosphorus soil test
Journal ArticleField experiment was conducted to evaluate the correlation relationship between the yield of two localized wheat genotypes (Triticum aestivum,) Acsad 901 and Salamboo and Olsen phosphorus soil test (0.5 M of NaHCO3 at pH 8.5) values. The experimental site was run at west sector of Libya. The experimental site pH was 8.4 and the texture is sandy The experiment consisted of three replicates and three phosphate fertilizer rates which equivalent, (0, 60, and 120) kg P2O5 ha-1 for both genotypes. The results of grain yield of the experiment were expressed by relative values (Relative Yield). The relative yield (RY) illustrated the relationship between soil test values and the grain yield clearly. Very close correlation relationship (r = 0.98 ) between relative yield of grain and the soil test values of Salamboo was found whereas Acsad genotypes was achieved less correlation( r =0.69) at 0 kg P2O5 ha-1 for both genotypes. The similarity between the two genotypes was very close (r = 0.99 ) for treatments that received high phosphate rate.
Mohammed Abdulbari Mohammed Billaed, (04-2021), طرابلس: المجلة الدولية للعلوم والتقنية, 25 (25), 1-8
دراسة تداخل مياه البحر إلى الخزان الجوفي الأول بمدينة زليتن
مقال في مجلة علميةنظراً للحاجة الماسة للمياه الجوفية لأغراض الاستخدام المنزلي والزراعي والصناعي أُجري هذا البحث لدراسة تداخل مياه البحر إلى بعض الآبار التي تضخ من قبل مرافق بلدية زليتن. تم جمع 23 عينة مياه جوفية في يناير 2019 من الآبار الموزعة بمنطقة الدراسة. تم تحليل عينات المياه لقياس تركيز الصوديوم (+Na) والكلوريد (-Cl) والكالسيوم (Ca+ 2) والماغنيسيوم (Mg+ 2) و مجموع الأملاح الذائبة الكلية (TDS). أيضا تم حساب مؤشر جونز (Jouns Ratio) لتحديد منطقة تداخل مياه البحر التي من أصل بحري داخل اليابسة. أظهرت نتائج التحاليل الكيميائية لعينات مياه الآبار أن هناك زيادة في تركيز TDS حيث تراوحت بين (1536-7545) مليجرام/ لتر، وزيادة في تركيز كل من الكلوريد حيث تراوح ما بين (280-3190) مليجرام/لتر، وتركيز الصوديوم (1256.08-45.5) مليجرام/ لتر ، وتركيز الكالسيوم (128-442) مليجرام/لتر تتجاوز الحد المسموح به من قبل منظمة الصحة العالمية (WHO). بينما مؤشر جونز يزداد بأغلب منطقة الدراسة عن 0.84، وبالتالي لاتُعد المياه من أصل بحري لأغلب المنطقة. عدا شمال شرق وشمال غرب المنطقة وجزء من وسط المنطقة، وتصل مسافة تداخل المياه المالحة إلى 6 كيلومتر بشرق وغرب منطقة الدراسة.
مصطفى علي محمد بن زقطة، (03-2021)، المجلة الليبية للعلوم الزراعية: جامعة طرابلس، 26 (1)، 1-16
SWOT analysis applications: An integrative literature review
Journal ArticleA strengths, weaknesses, opportunities, and threats (SWOT) analysis has become a key tool used
by businesses for strategic planning. Scholars have conducted SWOT research for over six
decades. However, a collective understanding of SWOT analysis remains vague. This study
accessed, analyzed, and synthesized the SWOT literature, allowing for new theoretical
perspectives and frameworks to emerge. Using an integrative literature review, this study reviewed
SWOT studies historically, providing a greater understanding of the SWOT analysis in different
sectors and the different approaches used in SWOT studies. Furthermore, it fills the knowledge
gap in the strategic planning context and indicates meaningful implications for managers that could
help improve their strategic decisions.
Mostafa Ali Mohamed Benzaghta, (03-2021), Journal of Global Business Insights: Scholar Commons, 6 (1), 54-72
REMOTE ACCESS TO A ROUTER SECURELY USING SSH
Journal ArticleHadya Soliman Hadya Hawedi, (01-2021), مجلة المنتدى األكاديمي: نقابة اعضاء هيئة التدريس الاسمرية, 1 (5), 174-189
Conformal Mapping as a Tool in Solving Some Mathematical and Physical Problems
Journal ArticleThe aim of this modest study was to shed some light on one of
the useful tools of complex analysis, which is the method of conformal
mapping (Also called conformal transformation). Conformal
transformations are optimal for solving various physical and
engineering problems that are difficult to solve in their original form
and in the given domain. This work starts by introducing the meaning
of a ''Conformal Mapping'', then introducing its basic Properties. In the
second part, it deals with a set of various examples that explain the
behavior of these mappings and show how they map a given domain
from its original form into a simpler one. Some of these examples
mentioned in this study showed that conformal transformations could
be used to determine harmonic functions, that is, to solve Laplace's
equation in two dimensions, which is the equation that governs a variety
of physical phenomena such as the steady-state temperature distribution
in solids, electrostatics and inviscid and irrotational flow (potential
flow). Other mathematical problems are treated. All problems that are
dealt with in this work became easier to solve after using this technique.
In addition, they showed that the harmonicity of a function is preserved
under conformal maps and the forms of the boundary conditions change
accordingly
omar Ismail omar elhasadi, WIAM ALI AYAD, ZAYNAB AHMED KHALLEEFAH, ABDUSSALAM ALI AHMED, (01-2021), EUROPEAN ACADEMIC RESEARCH: EUROPEAN ACADEMIC RESEARCH, 10 (8), 5972-5990