bluuebunny/crossref_metadata_2025 huggingface dataset:
Research Of Modeling Environments For Microprocessor Systems With Additional Modules Of Cryptographic Information Protection
Authors: Klimushyn P.S. , Kolisnyk T.P. , Lanovoi O.F. , Mozhaiev M. O.
Published: July 2024

The field of application of the protected microprocessor systems includes information security functions: authentication of subjects and objects of information interaction, information encryption, integrity control, access control,key management. Today, the urgent task is to establish the security of microprocessor-based systems using a variety ofcomputer simulation software environments. The work analyzes the most effective and affordable computer simulation programs for microprocessor systems and gives practical recommendations for their use. It has been shown thatthe most powerful computer-aided design system is the Proteus software suite which allows simulating the operationof various microprocessor devices with support for several microcontroller families from different manufacturers. Themain advantages include: performing all stages of development in a single environment; the ability to write, debug, andtest firmware, generate diagnostic messages to find programming errors. Using Multisim in the educational processmakes it possible to: review and change the status of the register content, program memory and data, stack cells andbit configuration; visualize the result of the execution of a single command or a program as a whole; demonstrate thepractice of joint use of languages C and Assembler in one project in order to optimize the program; to study the basics ofoperation and features of peripheral devices functioning. However, the limited set of microcontrollers in the Multisimprogram imposes significant restrictions on the possibility of using it for development of real projects. The computersimulation program TINA has a russified interface that is much easier compared to the Proteus with an ability to enter allthe information about the created project into one file. Compared to Multisim, the TINA library contains significantlymore microcontroller models, and the built-in programmer allows modifying programs and observing the results. Beingable to use the free version of TINA-TI and having an online version of TINACloud using cloud technologies makes thisprogram very useful for education. Web service offers many educational resources and the ability to perform research onthe design of microprocessor systems.
Research on Methods for Development of Software System for Emotions Recognition and State of Human Health Determination
Authors: Bilous N.V. , Rassokha O.V. , Ahekian I.A. , Hramm O.V.
Published: July 2024

To determine the general state of human health using emotion recognition, a method based on machine learningwas chosen, the classifier is trained on the dataset “fer2013” and “PAB-F”. negative emotions and the use of a dataset totrain the neural network, with images of people divided into classes “painful” - “not painful”. For the “fer2013” dataset,it is necessary to determine the presence of pain after data processing. As a rule, pain is expressed in the intense andprolonged presence of emotions of anger and sadness. I suggest measuring the intensity of emotion by the probabilityfactor of determining the emotion, which returns the neural network. It has been experimentally determined that aspecialized data set better copes with the task, despite the fact that it has a sufficiently small number of images. “Fer2013”has a high percentage of false positives. This can be explained by the fact that the photos also showed obvious negativeemotions, which were regarded as pain. The number of learning epochs has a positive effect on the accuracy of theneural network, and the increase in learning speed has a negative effect. To check the accuracy of the neural network atthe entrance to the module to check the emotional state at the entrance were images found by the search query “Paingrimace” on the resource depositphotos.
Neural network technology of image recognition using cellular automata.
Authors: Ukrainets O.Ye. , Udovenko S.G. , Chala L.E. , Shergin V.L.
Published: July 2024

An image recognition technology based on neural network processing of static and dynamic imagesusing cellular automata (CA) is proposed. The principles of the implementation of image processing operations withthe use of KA (in particular, pre-processing operations, contour selection and recognition) are considered. The peculiaritiesof the construction of convolutional neural networks (CNN) and their use for image recognition are analyzed.The possibilities of integrating CA into a neural network model of image classification and recognition are considered.The results of the development and software implementation of the neural network technology of image recognitionusing SNM and CA are given. Modeling of the proposed technology was carried out (on the example of the problem ofrecognizing visual objects for users with limited visual perception). development and software implementation of neuralnetwork technology for image recognition using SNM and CA.
Wireless methods for the local positioning without ACCESS to the Internet and GPS service
Authors: Revenchuk Ilona , Valuiskyi Vladyslav , Temnokhud Mykhailo
Published: July 2024

Local positioning in buildings without access to the Internet is a crucial requirement in many scenarios, such as large corporate offices, hospitals, universities, and shopping malls. However, this need for local positioning also presents certain challenges and problems that must be addressed. One of the most significant challenges of local positioning in buildings without internet access is the lack of reliable and up-to-date indoor map data. Without accurate map data, it can be difficult to navigate through complex indoor environments or locate specific rooms or facilities within a building. Another challenge is the absence of GPS signals in indoor environments, which makes it challenging to obtain accurate location information. This is especially problematic when attempting to track the movement of people or objects within a building.Additionally, the lack of internet access can make it difficult to implement location-based services that rely on data transfer between devices. This includes applications like indoor navigation, asset tracking, and location-based marketing, which all require internet connectivity to function correctly. Despite these challenges, there is a growing need for local positioning in buildings without internet access. This is especially true for large organizations and institutions that rely on efficient and effective operations within their indoor environments. Some technologies can provide accurate location information and help to mitigate some of the challenges associated with local positioning in buildings without internet access. They allows to obtain the accurate location information without relying on GPS signals or internet connectivity.The need for local positioning in buildings without internet access is becoming increasingly important, especially for large organizations and institutions that require efficient and effective operations within their indoor environments.
Comparative analysis of URL shortening algorithms: Рerformance considerations in the application domain оf web search and information retrieval technology
Authors: Kyrychenko Iryna , Shamrai Yehor
Published: July 2024

This article provides an in-depth overview and comparative analysis of URL shortening algorithms, with a focus on their performance and security. URL shortening is an important tool for creating concise versions of long URLs, particularly in platforms with character limitations. However, the increasing prevalence of cyber threats has raised concerns regarding the security of URL shortening. The paper examines a range of URL shortening algorithms, including Hash-based and Randomized algorithms, and compares their effectiveness based on factors such as URL length, randomness, and resistance to brute-force attacks. In addition, the article explores the security risks involved in URL shortening and suggests strategies for mitigating them. The paper also includes a performance analysis of different URL shortening algorithms, considering the time required to generate a shortened URL and redirect the user to the original URL. Finally, the article discusses the challenges of evaluating URL shortening algorithms and outlines potential avenues for future research in this area.
Optimal Sizing of Stand-alone PV System using Artificial Bee Colony Algorithm
Authors: Yusri Md. ,   University Teknologi Brunei, Khalil Ashraf , Peng Ang Swee ,   University Teknologi Brunei,   University Teknologi Brunei
Published: July 2024

The alarming rate of depletion of fossil fuels due to the increasing energy demands has increased the reliance on renewable energy. Renewable resources, such as solar and wind, are excellent alternatives to fossil fuels due to their sustainability and they do not produce harmful gases to the environment. The most promising renewable energy resource is the solar energy since it is available almost everywhere. Renewable energy systems have considerable high initial cost. In order to reduce the cost, the size of the system should be optimized. Optimization means increasing the output energy while reducing the cost. Recently intelligent optimization techniques have been used to solve complex engineering problems. Artificial Bee Colony (ABC) is one of these techniques. In this paper we present a sizing and optimization technique for renewable energy systems using ABC algorithm. The model for the PV panel, the battery, and the loads are used to optimize the system. The method is applied to optimize a typical system and the results of the design are optimum as proved by simulation and comparison with the results of the published methods.
Electrochemical Performance of SrWO4 Electrolyte for SOFC
Authors: Afif Ahmed ,   Universiti Brunei Darussalam, Radenahmad Nikdalila , Zaini Juliana , Mohamed Abdalla Abdalla , Rahman Seikh Mohammad Habibur , Cheok Quentin Hoon Nam , Azad Abul Kalam ,   Universiti Brunei Darussalam,   Universiti Brunei Darussalam,   Universiti Brunei Darussalam,   Universiti Brunei Darussalam,   Universiti Brunei Darussalam,   Universiti Brunei Darussalam
Published: July 2024

Scheelite structured SrWO4 material was synthesized by the solid-state sintering method and studied with respect to phase stability and ionic conductivity under condition of technological relevance for SOFC applications. The resulting compound was crystallized in the single phase of tetragonal scheelite structure with the space group of I41/a. Room temperature X-ray diffraction and subsequent Rietveld analysis confirms its symmetry, space group and structural parameters. Analysis by SEM illustrated a highly dense structure. SrWO4sample shows lower conductivity compared to the traditional BCZY perovskite structured materials. SrWO4sample exhibited an ionic conductivity of 1.93 × 10−6S cm-¹ at 1000°C in dry Ar condition. Since this scheelite type compound demonstrated significant conductivity and a dense microstructure, it could serve in SOFC as a mixed ion-conducting electrolyte.
Mechanical Properties of Direct Recycling Metal Matrix Composite (MMC-AlR) AA7075 Aircraft Aluminium Alloy
Authors: Yusuf N.K. ,   Universiti Tun Hussein Onn Malaysia, Medi A.S. , Lajis M.A. , Chan B.L. , Shamsudin S. ,   Universiti Tun Hussein Onn Malaysia,   Universiti Tun Hussein Onn Malaysia,   Universiti Tun Hussein Onn Malaysia,   Universiti Tun Hussein Onn Malaysia
Published: July 2024

Recycling of aluminium aerospace alloys represents a major challenge to both the aluminium and aerospace industries. Ecological manageability in assembling is these days is a dire and exceptional issue and the principle concerns are identified with increasingly proficient utilization of energy and materials. Recycling allowed saving large amount greenhouse gas emission, particularly in the case of aluminium. Metal matrix composites spur the possibility of advancing typical monolithic material properties. Offering great strength, lightweight and being able to withstand high temperatures are the main behaviours of the metal matrix composite. To that extent, many practitioners in either automotive or aerospace industries employed metal matrix composite in most of the critical parts. Forming metal matrix composite via solid state processing is considered innovative, as most of the metal matrix composite forming process took place either in liquid or gaseous processing. An experimental investigation was conducted to investigate the mechanical properties of a recycled aluminiumshiftingaluminasumfrom1to5wt.%thathadbeenpresentedtorecycled aluminium chip employing hot press forging. Aluminium chip was obtained by milling AA7075-T1 bulk to a certain parameter. The medium size chips were cleaned, dried and mixed with alumina particles before being poured into a closed-die mould. The main responses investigated were ultimate tensile strength and elongation to failure and microstructure analysis. Out of all fractions, 4 wt. % of alumina shows the highest Ultimate tensile strength when the value increased from 155.214MPa (1wt.%) to 187.183MPa. Further addition of alumina would enhance the composite strength, but in contrary, it also could prone the material performance.
Mechanical Properties of Self-Compacting Concrete Subjected to Elevated Temperature
Authors: Muhammad Abubakar ,   Abubakar Tafawa Balewa University, M. Garba Muhammad , Z. Abdullahi Nafi'u , Mohammed Musa ,   Ahmadu Bello University,   Abubakar Tafawa Balewa University,   Abubakar Tafawa Balewa University
Published: July 2024

Self-compacting concrete flows and fills reinforcement gaps and corners of formworks without the need for vibration during the pouring process. The problem associated with the production of self-compacting concrete is the use of a high dosage of cement which necessitates the addition of supplementary cementitious materials to curtail this effect. As a result, the impact of a ternary blended pozzolanic materials on the mechanical properties of SCC exposed to extreme temperatures was investigated. A quantitative research approach was employed and an experimental design method was adopted. The materials used were cement, rice husk ash, metakaolin, and pulverized burnt bricks. Laboratory tests conducted at the hardened stage were compressive strength, weight loss, and ultrasonic pulse velocity of self-compacting concrete subjected to 200°C, 400°C, 600°C, and 800°C elevated temperatures. At 8000C elevated temperature, the result of residual compressive strength shows that SCC produced with addition of the ternary blend at 10% had a higher value of residual compressive strength of 27.3% over the control specimens. Control specimens were found to have the least values of weight loss in comparison to the self-compacting concrete produced with the addition of the ternary blend. The result of residual UPV shows that self-compacting concrete produced with addition of the ternary blend at 10% had a higher value of 8.6%over the control specimens. When self-compacting concrete is to be produced with a ternary blend of rice husk ash, metakaolin, and pulverized burnt brick sand subjected to an elevated temperature of up to 800°C, 10wt.% is the optimum cement replacement level.
The Characterization of J-Integral for Elastic-Plastic Crack Growth Evaluation using Finite Element Analysis
Authors: Heng SH ,   University Malaysia Perlis (UniMAP), Muhamad Azmi MS , Rojan MA , Hashim MSM , Ismail AH ,   University Malaysia Perlis (UniMAP),   University Malaysia Perlis (UniMAP),   University Malaysia Perlis (UniMAP),   University Malaysia Perlis (UniMAP)
Published: July 2024

J-integral is a fracture mechanic parameter that can be used to characterize elastic-plastic fracture mechanic (EPFM) behavior. The path independent characteristic in J-integral is proposed by Rice [1], and it is widely used in a lot of research. Another approach is the load-displacement approach, where the J-integral is calculated by the area under the load-displacement curve. However, the validity of the J-integral value by load-displacement approach is yet to be confirmed. This paper is aimed to investigate the effect of crack length ratio of CT specimen to J-integral value by two approaches: path-integral approach and load-displacement approach. Finite element analysis of compact tension (CT) model with crack length ratio a/W between 0.2 to 0.5 was carried out under displacement δ between 0.2 to 1.0 mm using ANSYS parametric design language (APDL). The J value by path integral approach, Jpath is compared to the value calculated from load-displacement approach, Jp-d. It was found that path independency occurs for J value evaluated from path integral approach. A correction factor needs to be introduced since the load-displacement approach cannot be used for shallow crack cases.
Evaluation the Effect of Laminated Layer Sequence of Plain-Woven Bamboo on Tensile and Impact Performance of E-glass Woven / Epoxy Hybrid Composites
Authors: Rassiah Kannan ,   Politeknik Melaka (PMK), Ali Aidy , Saeman Muhadir ,   Universiti Pertahanan Nasional Malaysia,   Politeknik Melaka (PMK)
Published: July 2024

Bamboo reinforced hybrid composites are needed in claim to progress use of polymer composite technology. This paper describes a hand lay-up laminate process using plain-woven bamboo/E-glass woven/epoxy hybrid composite with the Design of experiment (DOE) 2 factor with 3-level and analysis of variance (ANOVA) was implemented for an evaluation against how the bamboo and e-glass woven affect the mechanical properties of hybrid composite in various sequence. The present study considers influence of plain-woven bamboo and e-glass woven laminated hybrid composite towards its tensile and charpy impact test performance. The results show that the2-layer composites withstood better tensile strengths 185.372 MPa for EG/BW/EG while charpy impact158.224 KJ/m2forEG/BW sequence respectively. Experiments results show that concentrate on both lay-up sequence and layers are important effect factors for tensile and charpy performance. It had been proven that both the layers and also the lay-up sequence demonstrated significantly different leads to terms of the mechanical performance.
Preparation of Innovative PEG/Tannic Acid/TiO2 Hydrogels and Effect of Tannic Acid Concentration on Their Hydrophilicity
Authors: Türk Serbülent ,   Sakarya University, Ünlü Burak , Mustapa Mohammad Sukri ,   Sakarya University,   Universiti Tun Hussein Onn Malaysia
Published: July 2024

Hydrogels are materials that can be used in biomedical and medical applications and have gained increasing interest in recent years. In order to obtain a wide variety of properties, hydrogels containing more innovative components still need to be produced and investigated. In this study, for this purpose, an innovative injectable polyethylene glycol (PEG)/tannic acid (TA)/TiO2hydrogels were prepared and their properties were investigated. TA, used as a crosslinker for PEG, was used in different concentrations (400 mg, 800 mg, and 1.2 g) in hydrogel preparation to analyse the effect of tannic acid on the properties of the obtained hydrogels. PEG/0.4TA/TiO2, PEG/0.8TA/TiO2and PEG/1.2TA/TiO2hydrogels prepared by using FeCl3to increase the crosslink density in its content and by adding TiO2due to its antimicrobial properties, were characterized by UV-VIS spectroscopy, FTIR and contact angle measurements. . With the UV-VIS and FTIR spectra, it is seen that TA/Fe3+metal complexes are formed and the three-dimensional hydrogel network is successfully completed with the help of these metal complexes formed by the addition of FeCl3. In addition, the contact angle measurements of the PEG/0.4TA/TiO2, PEG/0.8TA/TiO2and PEG/1.2TA/TiO2hydrogels were found to be 18°, 27° and 27° degrees, respectively, and the hydrophilicity of the hydrogels was reached at constant value in the samples added 0.8 g TA. The obtained new injectable PEG/TA/TiO2hydrogel is promising for use in biomedical and medical fields, thanks to its contact angle values of less than 90° for biocompatibility and its biocompatible components.
Performance of Al-Air Battery with Different Electrolytes
Authors: Syamsul Maárif Mochammad ,   Brawijaya University, Zeen Fanani Ardiansyah , Oerbandono Tjuk , Satria Wardana Bayu ,   Brawijaya University,   Brawijaya University,   Brawijaya University
Published: July 2024

Aluminium-air battery is a type of battery that offers high energy density (up to 8.1 kWh/kg) with a theoretical voltage of 2.71 V. Because of the high energy density and versatility, the battery attracts many users. Similar to other batteries, it consists of electrodes and electrolytes. The study aims to investigate the voltage generated by the battery when different electrolytes are employed. Since different electrolytes discharge different amounts of electron charge, the voltage will also differ from one to another. It also holds true when different pH of electrolyte isused. Using NaCl with a pH of 7, NaOH a with pH of 11 and KOH with a pH of 14, the investigation shows that increasing the level of pH results in a higher generated voltage but has the side effect of making Al more easily dissolved into the electrolyte. For the electrolyte which is considered neutral, i.e. NaCL, the lifetime of the battery was the longest as shown by the stability of the generated voltage compared to the other two electrolytes. NaOH and KOH which are categorized as strong bases showed a considerable decrease in generated voltage during the investigation
Influence of Welding Parameters on Macrostructure, Microstructure and Mechanical Properties in Orbital Pipe Welding of A36 Mild Steel Pipe
Authors: Sunar Baskoro Ario ,   Universitas Indonesia, Kiswanto Gandjar , Widyianto Agus , Panji Muchamad ,   Universitas Indonesia,   Universitas Indonesia,   Universitas Indonesia
Published: July 2024

In this work, the influence of welding parameters on macrostructure, microstructure and mechanical properties in Gas Tungsten Arc Welding (GTAW)orbital pipe welding was investigated. The aim of this study was to evaluate the effect of GTAW orbital pipe welding parameters on macrostructure, microstructure and tensile strength. This experiment using A36 mild steel pipe material with a thickness of 0.6 mm and an outer diameter of 114.3 mm. The joining method used is the V-groove join without gaps with the ER70-S 6 wire feeder. Welding results were analyzed in macro and micro graphs, as well as analysis of tensile strength. Macro-graphic analyses revealed the depth of weld penetration that occurs as well as the boundaries of each welding area. The micro-graphic analysis shows structural changes that occur in the welding area. Welding parameters with a welding current of 170 A, a welding speed of 0.9 mm/s and a welding position of 0°have a Ultimate Tensile Strength (UTS)increase of 11.01% over the base metal. The highest and lowest UTS are 502.80 MPa and 280.77 MPa, respectively. The fracture surface in the weld area shows that many micro-voids and dimpleswere formed.
Effect of Chemical Treatments on Morphological, Physical and Mechanical Properties of Bamboo/Glass Fibers Hybrid Laminated Composite
Authors: Yudhanto Ferriawan ,   Universitas Muhammadiyah Yogyakarta, Wisnujati Andika , Yudha Venditias , Rachmawati Putri , Dantes Kadek Rihendra ,   Universitas Muhammadiyah Yogyakarta,   Institut Sains & Teknologi Akprind Yogyakarta,   Universitas Muhammadiyah Yogyakarta,   Universitas Pendidikan Ganesha
Published: July 2024

Bamboo Apus (Gigantochloaapus) is a long wood fiber plant with a short planting period of 4-5 years that can be used as an alternative to reduce synthetic fibers in manufacturing composite products. The bamboo strips used to reinforce was prepared by alkali treatment in 5 wt.% NaOH (sodium hydroxide) at a temperature of 80oC for 2 hours, followed with a delignification (bleaching) of 3 wt.% H2O2, at a temperature of 60oC, PH=10 for 1 hour. The manufacturing of laminated composite products was carried out by the vacuum infusion (VI) method with a 0.8 bar pressure with a stacking sequence of 1 ply of the woven bamboo strip and 3 plies of chopped strand mat glass fiber. The tensile test of bamboo/glass fibers hybrid laminated composite treated(HLC-T) was increased by 78%, while the flexural test was increased by 73.6%. It shows that the removal of lignin and hemicellulose in the bamboo fibers due to chemical treatment could improve the compatibility between the fiber and polyester
Assessing Potentiality of Underground Coal Gasification for the Coalfields of Bangladesh
Authors: Kumar Biswas Arup ,   Prince of Songkla University, Mohideen Batcha Mohd Faizal , Wae-hayee Makatar ,   Universiti Tun Hussein Onn Malaysia,   Prince of Songkla University
Published: July 2024

Underground Coal Gasification (UCG), an atypical technique for mining coal, could potentially unlock vast untapped coal reserves of Bangladesh. However, there was very little work done on UCG potentiality analysis considering the properties of all the coalfields collectively based on the worldwide experiences. To increase a better understanding from that perspective, this study was therefore of interest. The study explored the essential factors required to assess the potentiality of UCG application for the five coalfields of the country. The threshold values were retrieved from published data of known trials occurred around the world. These were then compared with the available data of indigenous coalfields. In terms of the UCG prospects, all the coalfields passed the depth, thickness, ash content and rank factors to a significant extent. But faulting, overburden or aquifer proximity are somewhat critical for all the coalfields except Jamalganj. In addition, Khalaspir field, despite having few discontinuities, would be a good candidate for UCG implementation once Jamalganj field reaches the marker. This work might help initiating further steps through the analogous approach for siting the first UCG trial in the country.
Chemical Hydrolysis-Gamma Irradiation Processes for Cellulose Nanofibers Isolation from Rice Straw
Authors: Swantomo Deni ,   National Research and Innovation Agency Indonesia, Tri Basuki Kris , Haryanto  , Saefurrochman  , Wongsawaeng Doonyapong ,   National Research and Innovation Agency Indonesia,   Universitas Muhammadiyah Purwokerto,   National Research and Innovation Agency Indonesia,   Chulalongkorn University
Published: July 2024

Utilization of agriculture biomass waste into high value product is still potential to develop. In this study, cellulose nanofibers (CNF) as valuable materials were isolated from rice straw. Sodium hydroxide pulping and hydrogen peroxide bleaching were conducted as cellulose pretreatment. The CNF was prepared using 1 M hydrochloric acid hydrolysis followed gamma irradiation with various radiation doses, i.e. 40, 60, 80, 100 and 120 kGy. Compositions of α–cellulose and water retention of each stage processes increased inversely with hemicellulose, lignin and degrees of polymerization which had been strengthened by Fourier transform infrared spectroscopy (FTIR) spectra. X-ray Diffraction (XRD) analysis revealed that crystallinity index was more intense than rice straw, i.e. 80.85 %. Particle Size Analyzer (PSA) studies described the isolation process of CNF succeed with the smallest size 77.8 nm. The CNF functional groups of hydrophilic both hydroxyl and carboxylate slightly diminished with increasing of radiation doses followed water retention reducing, however the crystallinity had not changed significantly. Increasing radiation doses also could improve the thermal stability with the highest Tg 153.1 0C therefore the obtained CNF could be used as suitable nanocomposite.
The Influence of Molasses Concentration on the Physical and Mechanical Properties of Evaporation Boat Waste-Based Crucibles
Authors: Rusiyanto Rusiyanto ,   Universitas Negeri Semarang, Doni Widodo Rahmat , Yudi Prasetyo Ares , Fajar Fitriyana Deni , Bahatmaka Aldias , Sudiyono Sudiyono , Setiadi Rizki , Pita Rengga Wara Dyah , Ismail Rifky , Priharyoto Bayuseno Athanasius , Priyatmojo Anjar , Ramdhani Wahyu , arifiadi Ferry , Ansori Chusni , Purna Irawan Agustinus , Cionita Tezara , Parlaungan Siregar Januar ,   Universitas Negeri Semarang,   Universitas Negeri Semarang,   Universitas Negeri Semarang,   Universitas Negeri Semarang,   Universitas Negeri Semarang,   Universitas Negeri Semarang,   Universitas Negeri Semarang,   Diponegoro University,   Diponegoro University,   Institut Teknologi Bandung Indonesia,   National Research and Innovation Agency Indonesia,   Ministry of Industry, Republic of Indonesia,   National Research and Innovation Agency Indonesia,   Universitas Tarumanagara,   INTI International University,   Universiti Malaysia Pahang Al-Sultan Abdullah
Published: July 2024

Crucibles are critical equipment utilized across numerous industries, and they are notably costly. In this study, the influence of molasses concentrations on the properties of crucibles fabricated from evaporation boat waste products is explored. The evaporation boat waste was powdered and filtered using a 100 mesh sieve. The molasses concentrations added during the mixing procedure were as follows: 0%, 5%, 10%, 15%, and 20% by weight. After 120 minutes, the mixture was compacted using 25 MPa pressure. The green body formed was dried at 100 ̊C for 300 minutes and fired at 1150 ̊C for 240 minutes. The obtained specimens were analyzed by X-ray diffraction (XRD), scanning electron microscopy (SEM), density testing, hardness testing, and flexural testing. The results of this study demonstrate that the addition of molasses has significant effects on the properties of the crucibles. Specimens using molasses with a concentration of 5 wt% produce better physical and mechanical properties than other specimens. The density, hardness, flexural strength, and weight percentages of Boron nitride (BN) and Titanium diboride (TiB2) phases in the specimen with 5 wt% molasses were 2.36 g/cm3, 64 HRA, 31.5 MPa, 68.9%, and 31.1%, respectively. The use of evaporation vessel waste and molasses in the production of crucibles in this study is in line with Sustainable Development Goals (SDGs) 3, 7, 14, and 15, which relate to improving excellent health and well-being, ensuring access to affordable energy, and conserving marine and terrestrial ecosystems.
Functional Optimization of Smart Street Lamp via Hybrid Kano-DEMATEL Model: A Case Study on Hebi Area, China
Authors: Junchao Ge ,   SEGi University, Tze Fong Go , Hiu Hong Teo ,   SEGi University,   SEGi University
Published: July 2024

World's major cities are rapidly advancing towards the development of smart cities. Smart street lamps, due to their integration and systematization, have become among the most promising physical infrastructure for realizing smart city construction. However, current smart street lamps face challenges. The function setting of smart street lamps is a prominent challenge. Research how to optimize function settings to enhance cost-effectiveness and practicality is crucial. However, existing research in this area is limited. This paper proposes a novel approach that leverages the strengths of the Kano model and the DEMATEL method, culminating in the establishment of a hybrid Kano-DEMATEL Model for comprehensively ranking smart street lamp functions. The model comprises four layers: the target layer, the Kano criterion layer, the DEMATEL criterion layer, and the requirements sorting table layer. The ordering strategy involves using the Kano model as the primary criterion and complementing it with the DEMATEL method as the secondary criterion. The model operates with specific rules as follows: The target layer serves as the product requirements iteration strategy. The Kano criteria layer is used to initially prioritize product requirements, following the order of M > O > A > I, and retaining only essential, expected, and attractive attributes. The DEMATEL criteria layer identifies key requirements and their interrelationships using the Centrality-Causality Map method. Further prioritization is conducted based on the DEMATEL quadrant order: Quadrant I > Quadrant II > Quadrant III > Quadrant IV. Within the same DEMATEL quadrant, requirements are ranked by centrality from high to low. After qualitative and quantitative dual sorting of all requirements, a requirement prioritization table is established. This model brings clarity to the importance of optimizing various indicators, provides a clearer understanding of the strengths and weaknesses of product functions, and considers correlations and complementarities between different functions, ultimately enhancing the cost-effectiveness and practicality of smart street lamps. By applying this model, this paper obtained a thorough ranking of the 21 must-be, expected, and attractive functions of smart street lamps. Furthermore, aligning these findings with specific regional research requirement, the functions of new smart street lamps were successfully optimized in the Hebi area, leading to substantial improvements and successful construction outcomes.
TSDT vs CPT and FSDT for Free Vibration Analysis of Functionally Graded Incompressible Plates
Authors: Naderi A. ,   Higher Education Complex of Bam, Mohseni E. , Mahmoudi Saleh Abaad M. ,   Shahid Bahonar University of Kerman,   Higher Education Complex of Bam
Published: July 2024

This article studies vibrational behavior of incompressible functionally graded plates through utilizing classical, first-order shear, and third-order shear deformation plate theories. Plate material properties are presumed to differ continuously in the thickness direction concurringto a power law function. The motion and continuity equations are produced using three different plate theories, and then they are analytically solved for rectangular plates with simple supports utilizingNavier's method. The results are verified by obtaining the plate natural frequency for the power law index value equals zero and comparing them to those reported in previous works. It is shown that transverse vibrational analysis of the classical and first-order shear deformationplate theories for incompressible plates are not as precise as thecompressible ones. It is shown that this issue is due to the fact that according to those theories, unlike the higher order theories, the hydrostatic pressure cannot participate in carrying the bending loads. Consequently, the equivalent flexural stiffness and as a result flexural frequencies decrease. So, to analyze the vibrational behavior of functionally graded incompressibleplates, whether the plate is either thin or thick, higher order theories should be adopted. Also, it is demonstrated that TSDT is the simplest shear deformation plate theory for which the hydrostatic pressure can contribute to withstandig the bending moments. So, it can be a practical theory for free vibration analysis of functionally graded incompressible plates. Finally, this theory has been taken into consideration to analyze the vibrational behavior of rectangular plates made of functionally graded incompressible materials Also detailed parametric studies have been carried out.
Особенности переработки сельскохозяйственной продукции в современных условиях (на примере Приморского края)
Authors: Клиндух Роман Викторович
Published: July 2024

В Приморском крае, где климатические условия могут существенно влиять на урожайность, необходимо активное внедрение адаптивных сельскохозяйственных технологий и сортов культур, способных выдерживать возможные колебания климата. Развитие переработки сельскохозяйственной продукции в этом регионе может способствовать увеличению объемов экспорта, привлечению инвестиций и созданию новых рабочих мест. Рассмотрены ключевые аспекты и вызовы, с которыми сталкивается АПК региона в контексте переработки продукции. Акцентируется внимание на проблемах, вызванных особыми погодными условиями, недостаточно развитой инфраструктурой хранения и переработки, а также ограниченном доступе к современным технологиям. Предложены пути решения указанных проблем, включая адаптацию агротехнологий, развитие складской инфраструктуры, внедрение инноваций и укрепление связей между наукой и практикой.
Влияние температуры нагрева под закалку на структурно-фазовые характеристики жаропрочных сталей с 12 % Cr
Authors: Моляров В. Г. , Беломытцев М. Ю. , Моляров А. В.
Published: July 2024

Исследованы механические свойства и структура экспериментальных жаропрочных сталей с 12 % Cr с ферритной или ферритно-мартенситной структурами, а также аустенитной стали 08Х18Н10Т после закалки от разных температур (950 – 1250 °C). Проанализировано поведение сталей разных групп, классифицированных по структурному признаку (размеры зерна и содержание фаз), в этих условиях. Показано влияние температуры нагрева под закалку на предел текучести сталей при 20 и 720 °C при испытаниях на статическое сжатие.
Принципы создания сплавов на основе алюминия, экономнолегированных скандием
Authors: Захаров В. В. , Фисенко И. А. , Кунявская Т. М.
Published: July 2024

Рассмотрены научно-металловедческие основы создания алюминиевых сплавов, экономнолегированных скандием. Предложена частичная замена дорогого скандия в упрочняющей фазе Al3Sc на другой металл, в результате чего образуется упрочняющая фаза типа Al3(Sc1–xMex), сохраняющая кристаллическую решетку L12 фазы Al3Sc и все ее полезные свойства. При создании таких сплавов целесообразно использовать комплексное легирование переходными и редкоземельными металлами, образующими фазы типа Al3(Sc1–x–y–z , Me1x , Me2y , Me3z ) с решеткой L12 и способствующими формированию сложного пересыщенного твердого раствора. Металлы, замещающие скандий, должны удовлетворять двум требованиям: иметь достаточную растворимость в фазе Al3Sc и хотя бы небольшую растворимость в алюминии.
Cutting ability features for new high-strength titanium alloys with an ultrafine-grained structure used for aircraft parts
Authors: Makarov Vladimir , Pesin Mihail , Konogorova3 Louisa , Khabarova4 Anastasia , Abzaev Rinat
Published: July 2024

The results of experimental studies of the cutting parameters effect (cutting speed, feed, depth-of-cut) on the roughness of Ra, the microstructure of the surface layer of Ti-6Al-4V alloy samples with a conventional coarse-grained (CG) and ultrafine-grained (UFG) structure obtained by equal-channel angular pressing are presented. In framework of solving the problem connected with studying the machinability of a new VT6 alloy having an UFG structure, the development of a methodology for experimental research under turning was carried out. Physical parameters such as vibrations and noise under cutting, power consumption, numerical parameters of roughness, the magnitude and the pattern of residual stresses distribution and others are determined according to cutting modes and the tool used for the operation. It is shown that when turning at a low cutting speed, the roughness of CG sample is better than UFG of the alloy. With an increase in the cutting speed by 1,5 times, on the contrary, a sample with an UFG structure has a lower roughness Ra compared to a CG sample. Differences in the morphology and microstructure of the chips formed within comparative machining are discussed, taking into account types of microstructure of the alloy being treated, namely, presence of plastic flow lines in the chip microstructure after turning an UFG sample, the formation of large shifts, chips and tiny fractures in the chips after turning a CG alloy. It is found that new titanium alloys under turning obtain better cutting machinability in terms of such parameters as surface roughness, noise and vibration under cutting, and a more favorable character of residual stresses and riveting in the surface layer. Studying these factors, it is possible to predict a significant reduction of tool wear and stabilization of its durability compared to conventional coarse-grained titanium treatment.
Creation and development of highly reliable information and control systems with elements of artificial intelligence for advanced technological complexes
Authors: Brzhozovsky Boris , Martynov Vladimir , Brovkova3 Marina
Published: July 2024

Methods and means of improving complex technological equipment are shown through the operational assessment of the quality of implemented technologies realtime. This is proved by the fact that implementing technological operations on universal equipment each time requires modeling dynamic processes and taking into account a large number of uncertainty factors that affect the geometry generation quality. It is not possible to be a priori aware of these factors. There is a need to create new information technologies with the possibilities of universal application for immediate understanding of various dynamic processes in diagnostic, identification and control systems. Standard computer systems for statistical analysis and optimization of dynamic processes with the possibilities of universal application for various implementations of modern technologies have been introduced. The possibility of using integrative criteria and methods of artificial intelligence for diagnostic systems, identification and control of advanced technological complexes is shown. The implementation of information systems for the management of complex objects of various technological purposes is presented. The proposed modeling methods and approaches have been tested at various machine-building enterprises when processing parts on turning, milling and grinding machines, both universal and CNC. The research results made it possible to implement new principles of automated control and optimal adjustment of technological processes in real time and create an automated system for evaluating their quality, which allows increasing the efficiency and reliability of management decisions by conducting optimization directly on operating equipment. Based on the methods and approaches described above, new results have been obtained in the implementation of plasma technologies for the modification of geometrically complex surfaces of mechanical engineering products aimed at increasing wear resistance, hardness and other technical characteristics of the working surfaces of precision engineering products. A fairly complete approbation of methods, approaches, procedures and decision-making criteria for various technologies allows them to be recommended for universal applicability.
Project activities in public authorities. The national project "Safe high-quality roads" and its positive impact on the renewal of the fleet of road construction and road maintenance equipment in the Russian Federation
Authors: Perfilov A. S. ,   Moscow Automobile and Road Engineering State Technical University (MADI)
Published: July 2024

A brief history of the implementation of project activities in the Russian Federation, the standards of project management in the world, the differences between project and process activities, the structure of the program and project management approach in the Russian Federation are described. Analytical data on the introduction of kilometers of highways in the period from 2019 to 2024, provided for by the programs of road activity of the subjects of the Russian Federation within the framework of the national project "Safe high-quality roads" in the context of types of work, are presented, and four distinctive features of project activities in the Russian Federation are described.
The structure of the priority national project "Safe and high-quality roads" and the concept of the normative transport and operational condition of highways as fundamental in the initial structure of the project
Authors: Perfilov A. S. ,   Moscow Automobile and Road Engineering State Technical University (MADI)
Published: July 2024

The stages of development of the national and priority project "Safe high-quality roads" and the structure are described, indicating the main indicators, composition, as well as the geography of distribution. The topic of the concept of the normative transport and operational condition of highways as the main indicator in the development of the concept of not only this national project, but also the priority project, which was its predecessor, as well as indicators of the transport and operational condition of highways of regional, inter-municipal significance and urban agglomerations in the context of the subjects of the federation, is also disclosed.
Equipping Future Physicians with Artificial Intelligence Competencies through Student Associations
Authors: Hopson Spencer , Mildon Carson , Hassard Kyle , Urie Paul , Corte Dennis Della
Published: July 2024

Advances in artificial intelligence (AI) in the medical sector necessitate the development of AI literacy among future physicians. This article explores the pioneering efforts of the AI in Medicine Association (AIM) at Brigham Young University, which offers a framework for undergraduate pre-medical students to gain hands-on experiences, receive principled education, explore ethical considerations, and learn appraisal of AI models. By supplementing formal education with a student-led, faculty-supported introduction to AI, AIM alleviates apprehensions regarding AI in medicine and empowers aspiring physicians to navigate the evolving landscape of AI in healthcare responsibly.
Finite Element Analysis of Total Hip prosthesis
Authors: Rajeshkumar
Published: July 2024

In Total Hip Arthroplasty (THA), material chosen for femoral stem and cross section of stem are considered as critical parameters for, stress distribution in the femoral components. Titanium alloy (Ti6Al4V), when used as a material for femoral stem, recorded large displacement as compared to Chromium alloy (CoCrMo) stems. This large displacement in case of Ti6Al4V caused the stem to bend inside the cement mantle, thus destroying it. Thus, CoCrMo proved to be a better choice of material for stem, in cemented THA. Failure in THA may occur at cement-stem or cement-bone interface. Comparison between trapezium and circular cross section showed that, femoral stem with trapezium cross section has more stress concentration due to the presence of sharp corners.But in the case of conical stem von mises stress created is less, so it is prefered over the trapezoidal stem.