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Utilization of Polypropylene (PP) Plastic Waste as a Substitute for Fine Aggregate on Indirect Tensile Strength Performance in AC-WC Asphalt Mixtures
Shopyah Ramadhani Sarika, Arief Setiawan, Ratnasari Ramlan
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Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
The increasing amount of polypropylene (PP) plastik waste and the growing demand for natural aggregates in road construction have encouraged the use of sustainable alternative materials. This study investigated the effect of polypropylene waste as a partial replacement for fine aggregate on the Indirect Tensile Strength (ITS) of Asphalt Concrete-Wearing Course (AC-WC) mixtures and determined the optimum PP content. Laboratory experiments were conducted using the dry process with PP contents of 0%, 10%, 20%, 30%, 40%, and 50%.......
Keywords: AC-WC, waste plastik, polypropylene, fine aggregate replacement, indirect tensile strenght.
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Marshall Performance Analysis Of AC-WC Asphalt Mixture with Polypropylene Plastic Waste as A Substitution Material for Fine Aggregate
Sartika Dewi, Arief Setiawan, Novita Pradani
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Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
This study is motivated by two major issues, namely the increasing volume of plastic waste every year and the limitations of natural aggregates for road infrastructure. The main objective is to analyze the effect of Polypropylene plastic waste substitution on the Marshall performance characteristics of AC-WC mixtures. The methodology of this study is an experimental approach carried out in the laboratory, focusing on various percentages of PP plastic substitution as a substitute for fine aggregate. Marshall test is used to evaluate the main performance parameters, namely Stability, Flow, VIM (Void in Total Mix), VMA (Void in Mineral.......
Keywords: AC-WC, Polypropylene, Subtitusi Agregat Halus, Karakteristik Marshall, Kadar Aspal Optimum.
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Surface Electromyography and Multisensor Fusion for Safe Adaptive Impedance Control of Upper-Limb Rehabilitation Exoskeletons: A State-of-the-Art Review
Nguyen Huu Thang, Nguyen Duy Trung
Vietnam Download Certificate
Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
Upper-limb rehabilitation exoskeletons are evolving from trajectory-replay devices toward human-in-the-loop systems that estimate voluntary contribution and adapt assistance while maintaining physical safety. This state-of-the-art review synthesizes 61 peer-reviewed studies and two safety standards across robot architecture, surface electromyography (sEMG) acquisition and representation, continuous intention and participation estimation, multisensor fusion, compliant interaction control, safety assurance, and staged validation. The reviewed evidence indicates that high offline gesture-classification accuracy alone is insufficient for rehabilitation control........
Keywords: upper-limb rehabilitation exoskeleton; surface electromyography; multisensor fusion; voluntary participation; adaptive impedance control; assist-as-needed; safety supervision.
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Analysis of Cadmium (Cd) And Chromium (Cr) In River Water Using Atomic Absorption Spectrophotometry (Aas): Implications for Livestock Drinking Water
Dafa Arizki Yulistari, G. Nugroho Susanto, Kusuma Handayani, Jani Master
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Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
River pollution caused by industrial, agricultural, and domestic waste can lead to the accumulation of toxic heavy metals that are difficult to degrade and may pose risks to ecosystems, human health, and livestock. Information regarding heavy metal contamination in river water used as livestock drinking water in Lampung remains limited, and studies evaluating its potential impacts on livestock are still scarce. This study aimed to analyze the concentrations of the heavy metals cadmium (Cd) and chromium (Cr) in river water using Atomic Absorption Spectrophotometry.......
Keywords: Cadmium and Chromium metals, River Water, AAS, Livestock.
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Factors Affecting the Securities Investment: A Study on Individual Investors at FPT Securities Joint Stock Company
Nguyen Thi My My, Nguyen Tan Dung
Vietnam Download Certificate
Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
This study aims to analyze the factors influencing the investment decisions of individual investors at DA NANG city. The survey was conducted with 257 participants. The study utilizes SPSS 26.0 software to assess the reliability of the factors. Additionally, a Structural Equation Modeling (SEM) framework was employed to test the hypotheses. The research findings indicate that factors such as (1) Self-confidence, (2) Herd mentality, (3) Expected profit, (4) Risk acceptance, and (5) Market information have positive influence on investors' decision. The study also provides recommendations for securities companies tend to sustain existing investors and attract new investors.......
Keywords: investment decisions, individual investors, stock market.
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Reframing Education for Future-Ready Learners
JEMIMAH NAINE SELVAKUMAR
India Download Certificate
Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
The rapid evolution of digital technologies, globalization, and sustainability challenges has transformed the expectations placed upon education systems worldwide. Traditional teacher-centered instructional approaches are increasingly inadequate for preparing students to thrive in complex, technology-rich, and interconnected environments. Consequently, education requires a paradigm shift toward learner-centered pedagogies that cultivate creativity.......
Keywords: Reframing education; Flipped learning; Project-based learning; Artificial intelligence; Sustainable education; 21st-century skills; Educational innovation; Future-ready learning
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Robust Voltage Regulation of a Renewable-Integrated Single-Area Thermal Power System Using Neural-Network-Based Excitation Control
Nguyen Huu Thang
Vietnam Download Certificate
Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
This paper develops a renewable-aware radial-basis-function neural-network (RBFNN) augmentation for terminal-voltage regulation of a small single-area thermal generating unit influenced by wind and photovoltaic power variations. The benchmark retains the dominant automatic-voltage-regulator amplifier, exciter, reduced generator-load voltage channel, first-order renewable channels, reactive-load disturbances, actuator saturation, controller memory, and parameter uncertainty. Four controllers are evaluated under identical operating conditions: PI, filtered PID, an explicit zero-order Takagi-Sugeno fuzzy-PI controller, and the proposed RBFNN controller. Unlike a rule-based compensation term, the proposed neural component is trained inside the supplied MATLAB script from 8000 deterministic excitation samples covering the load-renewable operating region.......
Keywords: automatic voltage regulator; excitation control; radial-basis-function neural network; fuzzy logic; thermal generating unit; wind power; photovoltaic generation; Lyapunov stability; robust voltage control.
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Quantum Computing and AI
Dr. Jollanda Shara
Albania Download Certificate
Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
Lately, two novel fields are penetrating the world of technology and promise to change considerably our everyday life. The first one is quantum computing, and the second is artificial intelligence. Both of these technologies are able to transform our industries and solve complex and challenging problems.
Quantum artificial intelligence (QAI) is indicated to be the most powerful technology for the future. QAI is a methodical logic combination.......
Keywords: Quantum Computing, AI, QAI, QML, QCV, QNLP, QMARL, POMDP, JSS, FJSS
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The Synergy Between Artificial Intelligence and Green Entrepreneurship for The Achievement of The Sustainable Development Goals (SDGS): A Qualitative Synthesis Study
Dinh Nguyen Khanh Phuong, Bui Tran Huan
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Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
The growing severity of global environmental challenges has accelerated the transition from traditional business models toward green entrepreneurship (ecopreneurship). This paper conducts a qualitative synthesis study to examine the synergy between Artificial Intelligence (AI) and green entrepreneurship in advancing the Sustainable Development Goals (SDGs). The findings reveal that AI serves as a powerful catalyst for optimizing resource management, minimizing waste, and fostering green innovation through highly accurate predictive models. The integration of human creativity with AI-driven big data analytics enables green enterprises to enter markets........
Keywords: Green Entrepreneurship; Artificial Intelligence (AI); Sustainable Development; Eco-Innovation; Green Finance; Risk Management.
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Innovating Entrepreneurship Education in The Era of Generative AI (Gai): A Qualitative Synthetic Study
Dinh Nguyen Khanh Phuong, Bui Tran Huan
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Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
The emergence of Generative Artificial Intelligence (GAI), exemplified by large language models such as ChatGPT, has catalyzed a revolutionary shift in higher education, particularly within the domain of entrepreneurship education (EE). This paper presents an in-depth qualitative synthetic study aimed at analyzing how GAI is fundamentally reshaping the entrepreneurship training ecosystem by transforming instructional models, curricular structures, and the psychological mechanisms of learners. The research findings indicate that GAI functions as a strategic........
Keywords: Entrepreneurship Education, Generative AI (GAI), ChatGPT, Psychological Distance, Entrepreneurial Competencies, Educational Innovation
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AI-Driven Business Model Transformation and Risk Management for Micro-Firms: A Qualitative Synthesis Study
Bui Tran Huan, Dinh Nguyen Khanh Phuong
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Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
Micro-firms, defined as businesses employing fewer than ten employees, constitute the backbone of the global economy. Nevertheless, they frequently encounter severe resource constraints and elevated operational risks. This study conducts a qualitative synthesis to examine how Artificial Intelligence (AI), particularly Generative Artificial Intelligence (GenAI), facilitates business model transformation and enhances risk management within this segment. Drawing upon 44 academic sources, the study adopts the Technology–Organization–Environment ......
Keywords: Micro-firms; Artificial Intelligence (AI); Business Model Transformation; Risk Management; Technology–Organization–Environment (TOE) Framework; Dynamic Capabilities safety supervision.
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The Psychological Mechanisms Underlying Digital Entrepreneurial Intentions and Behaviors in The Era of Artificial Intelligence: A Qualitative Synthesis Study
Bui Tran Huan, Dinh Nguyen Khanh Phuong
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Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
In the context of global digital transformation, the integration of Artificial Intelligence (AI), particularly Generative Artificial Intelligence (GAI), has fundamentally redefined the developmental trajectory of digital entrepreneurs. This paper conducts a qualitative synthesis study to explore the underlying psychological mechanisms that drive entrepreneurial intentions and behaviors in the AI era. Drawing upon evidence from 44 academic sources, the study elucidates the role of AI as a powerful technological stimulus within the Stimulus–Organism–Response (SOR) framework. The findings reveal that AI adoption, exemplified by technologies such as.......
Keywords: Digital Entrepreneurship; Artificial Intelligence (AI); Entrepreneurial Identity Aspiration; Digital Entrepreneurial Self-Efficacy (ESE); Stimulus–Organism–Response (SOR) Model; Technology Anxiety
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The Influence of Digital Communication Activities on Brand Image and Brand Trust in Higher Education Institutions
Van Thi Hai Le
Vietnam Download Certificate
Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
This study explores how digital communication activities impact brand image and brand trust within higher education institutions. Drawing on theories of branding, relationship marketing, and digital communica-tion, the research proposes a model where Online Public Relations (E-PR), website communication, and social media communication shape brand image, which in turn affects brand trust. Data collected from university students were analyzed using reliability analysis, exploratory factor analysis, and regression analysis. The find-ings indicate that all three.......
Keywords: Digital marketing, E-PR, Brandimage, brand trust.
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Application of Behavioral Architecture in the Rear Living Spaces of Permanent Housing at Tondo 1, Palu City
Auliasyah Bayunikarsa, Zaenal Siradjuddin, Ahda Mulyati, Muhammad Bakri
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Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
This study examines the application of behavioral architecture in the rear living spaces of the Permanent Housing (Huntap) Tondo 1 in Palu City, a post-disaster relocation area following the 2018 earthquake, tsunami, and liquefaction. Behavioral architecture is grounded in the reciprocal relationship between human behavior and the built environment, wherein the activities, habits, and needs of occupants directly shape and transform the configuration of living spaces. The research employs a descriptive qualitative approach through field observations, interviews, and documentation of 16 housing units, supplemented by Space Syntax analysis......
Keywords: Behavioral architecture, rear yard, post-disaster housing, multifunctional space, Space Syntaxci.
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The Roles of public health worker
Audu Jonah, Eze Chidiebere Kizito, Yaudagobe Sani Danlami, Markus Joy, Jonathan Ruth
Nigeria Download Certificate
Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
This seminar paper examined the role of public health workers in disease prevention and highlighted their importance in promoting and protecting community health. Public health workers play a critical role in reducing the spread of communicable and non-communicable diseases through activities such as disease surveillance, vaccination programmes, health education, environmental sanitation, policy advocacy, and community mobilisation. The seminar was motivated by the growing global health challenges facing societies today, particularly the lessons learned from the COVID-19 pandemic and the increasing burden of preventable diseases worldwide.......
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Agro-Waste Silica Ash from Corncobs as a Sustainable Quartz
Substitute in Porcelain Bodies: Effects on Densification,
Mechanical Properties and Vitrification
A. S. Shado, M. Y. Olagoke, O. J. Ajayi
Nigeria Download Certificate
Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
The increasing demand for sustainable and environmentally friendly ceramic raw materials has stimulated research into the utilization of agricultural wastes as alternatives to conventional mineral resources. This study investigates the suitability of Agro-Waste Silica Ash (AGSA) derived from corncobs as a partial replacement for quartz in porcelain body formulations. Six porcelain compositions containing 0–25 wt.% AGSA were prepared by progressively replacing quartz while maintaining constant proportions of kaolin, feldspar, and ball clay. The specimens were processed through wet ball milling, uniaxial pressing, and fired at 1250 °C, after which their physical and mechanical properties were evaluated.......
Keywords: Agro-waste silica ash (AGSA); Corncob ash; Porcelain body; Quartz replacement; Sustainable ceramics; Porcelain tiles; Vitrification; Densification; Mechanical properties; Circular economy.
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Durability of Asphalt Concrete-Wearing Course (AC-WC) Mixtures Incorporating Polypropylene (PP) Plastic Waste as a Fine Aggregate Substitute
Mahmud Siwu, Arief Setiawan, Syamsul Arifin
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Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
Flexible pavements are susceptible to water-induced damage, which weakens the bond between asphalt binder and aggregates, thereby reducing mixture durability. This study evaluated the effect of polypropylene (PP) plastic waste as a fine aggregate substitute on the durability of Asphalt Concrete-Wearing Course (AC-WC) mixtures, determined the optimum substitution level, and investigated the mixture microstructure using Scanning Electron Microscopy (SEM). PP substitution levels of 0%, 10%, 20%, 30%, and 40% were investigated.......
Keywords: Asphalt Concrete-Wearing Course (AC-WC); durability; polypropylene; residual Marshall stability; scanning electron microscopy (SEM).
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The Effect of Use of Bamboo Cerucuk on The Performance of Shallow Foundations on Liquefacted Soils In The Kabonena Area
Moh.David Rizaldi, Sriyati Ramadhani, Sukiman Nurdin
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Research Inventy: International Journal of Engineering & Science , Volume 16 ~ Issue 7
Liquefaction is one of the impacts of earthquakes that causes an increase in pore water pressure, thereby reducing the effective stress and resulting in a loss of soil shear strength. This condition can reduce the bearing capacity and increase the settlement of shallow foundations, especially in saturated sandy soils. This study aims to analyze the characteristics of the soil in the Kabonena sub-district, Palu city, and evaluate the effectiveness of the use of bamboo pits in increasing the bearing capacity and reducing the settlement of shallow foundations in liquefied soil conditions........
Keywords: Liquefaction, Bamboo Niche, Shallow Foundation, Soil Bearing Capacity, Foundation Settlement, Kabonena, Plaxis 3D.

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