880 research outputs found
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AN IN – DEPTH ANALYSIS OF NATURAL FIBERS :A COMPREHENSIVE REVIEW OF PROPERTIES AND PERFORMANCE CHARACTERISTICS
Full text linkThe purpose of this research is to investigate the usage of natural fibers in plant-based natural fiber-reinforced cement-based composites for sustainable construction materials. It summarizes research on various fiber kinds, their properties, and their impact on cement-based products, with a focus on renewable possibilities such as flax, jute, ramie, hemp, cotton, sisal, and kenaf. Due to their hydrophilic nature, plant fibers and polymers present compatibility concerns and moisture damage when combined. The paper examines ways for improving durability, such as physical and chemical treatments to improve aging resistance, optimizing binder components, and modifying curing regimens to reduce alkalinity in the cement mixture. Although the porous nature of NF and its weak interface may increase concrete permeability and decrease durability, employing NF for fabric production or extracting cellulose nanocrystals/nanofibers is indicated as a viable enhancing strategy
“A NEW WORLD AND A NEW SOCIETY CHALLENGED BY A PROBLEMATIC CHARACTER IN LA COMPAGNIE DES GLACES BY G.J. ARNAUD”
Full text linkThe Ice Company, a dystopian novel, is the first volume of a 64-volume saga which met with great success among readers. It was adapted into a comic strip by the JOTIM group and also into a television series. On an earth invaded by ice, the survival of the human species is ensured by the large railway companies which share the globe. They provide warmth and food, but also exercise a ruthless dictatorship. Involuntarily involved in the intrigues of the Company, the glaciologist Lien Rag rebels against the power of the Company and the ostracism suffered by the Red Men, a new race capable of resisting very low temperatures. The proposed problem is formulated as follows: How does the author present the new world buried under the ice? Does the new society born from this climate change differ from the old society? Why does the main character rebel against the power of the railroad companies? To answer these questions, our plan will be composed of three parts. 1. Climate change and the new world it has brought. We will analyze the causes of climate change and the life that humanity now leads in cities placed on rails and the appearance of a new race, the Red Men who can resist very low temperatures. 2. The defects of the new society. The new society is afflicted by the defects of the old society: totalitarian regime; bitter war between the railway companies for power; social class inequalities; racism. 3. A problematic hero, the glaciologist Lien Rag Based on the theory of Lucien Goldmann developed in the work entitled Sociology of the novel (still current) we will show that Lien is a problematic character in search of authentic values in a degraded world. This is the case of Lien whose research into the origin of the Redhead Men, victims of the dictatorship imposed by the railway companies, is the manifestation of his revolt against the degraded world in which he lives
THE IMPACT OF COLD WEATHER ON MOOD AND COGNITIVE STYLES AMONG A SAMPLE OF RESIDENTS OF THE COASTAL AREA OF TRIPOLI
Full text linkThe study aimed to investigate the impact of weather coldness on mood and cognitive styles among a sample of coastal area residents in Tripoli and a sample of residents from the mountainous region in Sir Al-Dinniyah area, Northern Lebanon. The sample consisted of 400 participants from the coastal area and 400 from the mountainous area, equally divided by gender (males, females). The study followed an analytical descriptive approach, utilizing the Positive Thinking Scale and the Mood State Scale after confirming their socio-metric characteristics. The statistical results revealed significant differences between the average scores of the population in the coastal areas with moderate coldness and the average scores of the population in the mountainous areas with high coldness regarding both positive thinking and mood state in favor of the residents of the mountainous areas with high coldness. Moreover, statistically significant differences were found between the female groups in the coastal and mountainous areas and the male groups regarding positive thinking and mood state
CLIMATE CHANGES AND THEIR PSYCHOLOGICAL AND SOCIAL REPERCUSSIONS AMONG A SAMPLE OF RESIDENTS OF AKKAR GOVERNORATE
Full text linkThe study aimed to know the psychological and social repercussions of climate change among a sample of residents of Akkar Governorate in northern Lebanon in light of the variables of gender, economic status, and age group. The study adopted the descriptive analytical approach using the questionnaire as a tool for collecting data and information. The sample numbered 380 individuals, distributed according to the variables of gender, economic status, and age group, and they were chosen randomly. The sample members, residents of Akkar Governorate, feel a moderate degree of environmental anxiety and the psychological repercussions of environmental changes. The results showed that there were varying degrees among the sample members regarding the psychological repercussions of climate change to a high degree, others to a moderate degree, and some to a low degree. It has also been shown that they suffer from high psychological repercussions in terms of constant fear of infectious diseases spread today due to pollution, fear of losing food resources due to the climate changes we are witnessing, especially weather conditions, and constant fear of contracting a disease or epidemic spread due to climate change and the spread of pollution. It was also shown that there are fundamental differences with statistical significance at the level of the psychological and social repercussions of climate change due to the gender variable (males, females) in favor of females. There are fundamental differences indicative of the level of psychological and social repercussions of climate change due to the age group variable (adolescents, adults) in favor of adolescents
AI-DRIVEN DYNAMIC PILOT PLACEMENT FOR 5G MMWAVE MASSIVE MIMO: A RANDOM FOREST REGRESSION APPROACH
Full text linkEfficient pilot placement in 5G millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) systems is critical to enhancing performance, achieving high spectral efficiency (SE), low bit error rate (BER), reduced pilot overhead, and minimized latency. However, this requires pilot symbols transmission, which occupies spectral resources and results in reducing spectral efficiency (SE). This paper proposes a novel dynamic pilot placement (DPP) framework, optimized using a Random Forest Regression (RFR) approach, to enhance system performance. Unlike traditional static and semi-static pilot allocation methods, the DPP approach dynamically adjusts pilot positions based on real-time channel state information (CSI) and system requirements, reducing interference and improving channel estimation accuracy. Through comprehensive simulations, the proposed method demonstrates significant enhancements in SE, BER, and latency, while maintaining pilot overhead at minimal levels. Furthermore, the latency reduction achieved through the optimized pilot allocation supports the stringent requirements of ultra-reliable low-latency communication (URLLC) scenarios in 5G networks. The results highlight the robustness of the RFR model in capturing the complex nonlinear relationships between pilot placement, channel conditions, and system performance metrics
A PRACTICAL INTRUSION DETECTION APPROACH FOR ARP SPOOFING AND MITM IN LOCAL AREA NETWORKS
Full text linkIn modern network environments, the increasing sophistication of cyberattacks poses significant risks, particularly through Address Resolution Protocol (ARP) spoofing and Man-in-the-Middle (MITM) attacks, which exploit vulnerabilities in local area networks. Existing tools often focus on detection or protection at the client side, leaving network-wide detection and response largely unaddressed. This paper presents a novel intrusion detection tool specifically designed to identify ARP spoofing and MITM attacks in real-time within local area networks. The system leverages Python and Scapy for low-level packet analysis and Flask for an intuitive web-based dashboard. Key features include network monitoring, attack detection through ARP table comparisons, logging capabilities, and attack attribution by identifying malicious IP addresses. The tool was tested in a controlled lab environment, demonstrating high accuracy in detecting ARP spoofing attempts, even in complex network scenarios. The findings underscore the tool\u27s potential as a foundational step toward developing comprehensive mitigation solutions for securing local networks. Future work aims to integrate automated mitigation strategies and expand the system\u27s applicability to larger network infrastructures
GENERATING A DESIGN AUTOMATION FOR FUNCTIONAL RELATIONSHIP IN RESIDENTIAL BUILDING: DEVELOPING PLUG IN
Full text linkDesigners, architects, and students face many problems in finding the optimum zoning or exploring different alternatives during early design stages, which consumes time and energy. To solve this problem, a computer editing tool will be an added value that helps users at this stage. The optimization of functional relationship is very important as many factors should be considered such as orientation; vertical and horizontal relationship; areas, view, building regulations, opening to wall ratio, form-to-form relationship, spaces proportions, circulation, and other related issues. In computer generative design, recent research has reached a goal to generate functional relationship in residential buildings and others, by using spatial relationship plug in, such as ‘SYNTCATIC v-2.7’ used in grasshopper software. This plug-in considers many of the mentioned factors, however it neglects other needed factors, such as vertical circulation and corridors. This paper aims to develop and optimize functional relationships in residential buildings, through developing an existing plug in and considering some neglected factors, especially the horizontal circulation. The existing grasshopper plug in ‘SYNTCATIC v-2.7’ will be developed, after analyzing its missing and ignored factors, to be able to help architects to take decisions for zoning in early design stages. Then this developed plug in will be tested and applied in a case study for verification. As an outcome the developed plug in will be able to facilitate architects’ work, since it allows them to test various alternatives easily at the beginning of the design, to be able to select the optimum one. This enhanced plug in will consider especially horizontal circulation in residential buildings, which was neglected in the existing plug in
THE DEPENDENCE LEVEL AMONG ADOLESCENT VAPE USERS: A CROSS-SECTIONAL STUDY
Full text linkVape is a battery-powered device that works by heating a liquid called “e-liquid”. The use of vape has significantly increased in the past years among high and middle school students. The aim of the current study was to evaluate the level of dependence among adolescent vape users in Lebanon and to assess their knowledge about vape health hazards. A descriptive cross-sectional study with a self-administered questionnaire. A link for the survey was generated on Google Forms and sent to adolescents in the community. The survey was sent to parents of vape users and after their approval, it was shared with their adolescent children for data collection. The data collection form included sociodemographic characteristics, awareness, perception, vaping background, and the Penn State Electronic Dependence Index to evaluate the level of dependence among adolescent vape users. A total of 438 participants were included in this study. The findings revealed that 45.9% are current vape users, of which most of them have low dependence on these devices (43.8%), while the rest are medium dependent (24.8%), highly dependent (5.5%), and non-dependent (25.9%). While in terms of perception, vape users perceived vaping to be completely healthy and non-addictive. The findings of this study showed that 87.6% of vape users in Lebanon are dependent at some level. Additionally, a gap was seen in the knowledge about the health effects of vaping significantly among the vape users. Future research should address a larger scope of participants to account for all vape users in the country
SHEDDING LIGHT ON INTERNATIONAL ENVIRONMENTAL LAW
Full text linkThis article sheds light on international environmental law, the modern branch of public international law, which aims to protect the environment and achieve sustainable development. The three sections of this article address this law and its basics related to its codification and development, sources and scope, and main legal principles. It aims to introduce international environmental law to law-students who wish to learn about it, in addition to provide research topics for those who wish to prepare academic researches on international environmental law
CLIMATE CHANGE AND ITS IMPACT ON MIGRATION
Full text linkThroughout history, people have been forced to leave their lands due to scarcity of resources or conflict About scarce resources. Migration, or population movement in general, is part of human history It is considered an important adaptation mechanism, and what is new in this matter is the possibility of massive population movements as a result Chronic factors such as desertification and large-scale depletion of resources, or as a result of critical events e.g Drought, floods, hurricanes, and potential marine floods resulting from the earthquake Earth or volcanic eruption. Due to increasing awareness about the role and speed of global warming, and seeking natural effects The dangerous and severe risks resulting from global warming have spread throughout the world. Warnings regarding... With sharply increasing rates of displacement; One of these consequences is the displacement of populations from their homelands Temporarily or permanently. Researchers and politicians may argue about the numbers expected to be displaced, but they agree It is necessary to be prepared to stay away from these effects. Migration caused by climate change It is the movement of a person or groups of people who, for reasons related to sudden change Or gradually in the environment due to climate change, they are obliged to leave their usual place of residence or choose to do so Thus, either temporarily or permanently, within a country or across international borders. Climate migration is A subcategory of environmental migration; Where the change in the environment is due to climate change. Can be tied Migration in this context increases the status of affected persons, especially if it is forced. However Migration can also be a form of adaptation to environmental stressors, helping... Building the resilience of affected individuals and communities