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Biblioteka informuoja, 2024 Nr. 22 (666)
No full textNaujai į Web of Science ir Scopus įtrauktų Vilnius Gedimino technikos darbuotojų publikacijų sąrašai ir kitos bibliotekos aktualijos.22 (666)202
Optimizing MobileNetV3 Using Particle Swarm Optimization Algorithm for the Recognition of Bean Leaf Diseases
No full textCrops play a vital role in human nutrition and overall well-being. Beans are an economically significant type of crops that not only provide a rich source of protein but also offers substantial health benefits. However, beans are susceptible to bacterial and fungal infections. If left uncontrolled, these diseases could result in severe consequences. Diagnosis of the affected leaves can be done by plant pathologists, which is not readily available in local and remote areas. Using deep learning algorithms, an accurate classification of bean leaf diseases can offset this problem from an early stage. This research introduces a framework for optimizing MobileNetV3 using Particle Swarm Optimization that can accurately identify healthy or diseased bean leaves from images captured in real-world conditions. With having only 2.9M parameters, the best model achieved a high degree of accuracy at 98.44% on unseen data, outperforming the models proposed by other researchers on the same classification task. Results suggest that the model can be adopted in the field to increase the efficiency in the early identification of bean leaf diseases. Lastly, the same methodology can also be applied in solving plant leaf diseases from other economically significant crops.Taip / Ye
Suskystintųjų gamtinių dujų hidrodinaminių ir termodinaminių procesų transportavimo ir išdujinimo sistemoje tyrimas
No full textThe research work concerns the current world energy situation, alternative fuels, specifically liquefied natural gas (LNG), and the minimisation of pollution, which is important in the transport sector. The technological analysis and theoretical investigations are applied to analyse hydrodynamic, thermo-dynamic and evaporation processes and determine hydraulic energy losses in LNG transportation and regasification systems, thereby increasing the technological availability of LNG terminals.
The introduction presents the relevance of the research, its purpose, tasks, scientific novelty, and results obtained from theoretical research based on the technical parameters of the Floating Storage and Regasification Unit (FRSU) and the established technological regimes of the regasification process. It also specifies the significance of the dissertation’s topic, defensive statements, and a list of scientific publications published by the author.
The first chapter analyses the transportation, storage and regasification technologies and challenges of LNG mathematical models. The chapter introduces LNG fundamentals, provides a global overview of the NG and LNG markets, and delves into transportation, storage, and regasification technologies, as well as mathematical models applied as technical solutions to evaluate technological problems. It focuses on the challenges associated with the thermal-physical properties of LNG that impact hydrodynamic and thermodynamic evaporation processes.
The second chapter presents the analysis of FSRUs’ technical equipment and characteristics. It explains the estimation of LNG’s technical parameters and thermal-physical properties. The analysis aims to determine the technological parameters for creating theoretical mathematical models of LNG transportation and regasification systems. The third chapter considers mathematical models of the LNG transportation and regasification systems at an FSRU.
The analysis of hydrodynamics, thermodynamics, and evaporation processes in the total LNG transportation and regasification systems was performed and adopted according to the researchers in this dissertation.
Nine scientific articles focusing on the subject of the dissertation were published: three in scientific journals included in Clarivate Analytics Web of Science databases with IF; one in a scientific journal included in Elsevier Scopus databases with IF; one in Clarivate Analytics Web of Science Database Conference Proceedings; three in Elsevier Scopus Science Database Conference Proceedings; and two in peer-reviewed international conference materials.Mokslinio darbo aktualumas yra susijęs su dabartine pasaulio energetikos situacija, alternatyvaus kuro, kaip suskystintų gamtinių dujų (SkGD), vartojimo ir taršos mažinimo tendencijomis, kurios yra svarbios transporto sektoriuje. Technologinė analizė ir teoriniai tyrimai taikomi siekiant ištirti hidrodinaminius, termodinaminius, garavimo procesus ir nustatyti hidraulinius energijos nuostolius SkGD transportavimo ir dujinimo sistemose taip didinant SkGD terminalų technologinį prieinamumą.
Įvade pateiktas tyrimo aktualumas, tikslas, uždaviniai, mokslinis naujumas bei gauti teorinių tyrimų rezultatai, remiantis plaukiojančios saugyklos su dujinimo įranga techniniais įrangos parametrais. Taip pat yra pateiktas nagrinėjamos temos reikšmingumas, ginamieji teiginiai ir autoriaus paskelbtų mokslinių publikacijų disertacijos tema sąrašas.
Pirmame skyriuje pateikiama SkGD transportavimo, laikymo ir dujinimo technologijų, įrangos techninės problematikų analizė bei matematiniai modeliai, taikomi kaip techniniai sprendimai technologinėms problematikoms tirti. Skyriuje aprašomos SkGD savybės, pateikiama pasaulinė GD ir SkGD rinkų apžvalga ir gilinamasi į transportavimo, saugojimo bei pakartotinio dujinimo technologijas, matematinius modelius. Skyriuje apžvelgiami technologiniai procesai, turintys
įtakos hidrodinaminiams ir termodinaminiams SkGD garavimo procesams bei dujų šiluminėms ir fizinėms savybėms.
PSDĮ techninės įrangos ir charakteristikų analizė pateikta 2 skyriuje. Šiame skyriuje analizuojami SkGD techniniai parametrai ir šiluminės-fizinės savybės. Analize siekiama nustatyti technologinius parametrus kuriant SkGD transportavimo ir dujinimo sistemų teorinius matematinius modelius. Trečiame skyriuje rengiami PSDĮ SkGD transportavimo ir dujinimo sistemų matematiniai modeliai.
Hidrodinamikos, termodinamikos, garavimo procesų analizė atlikta taikant sukurtus SkGD transportavimo ir pakartotinio dujinimo sistemų matematinius modelius. Kita analizės dalis – energijos suvartojimo ir eksergijos analizės, viso pakartotinio dujinimo proceso energetinių nuostolių įvertinimas.
Disertacijos tema yra paskelbtos devynios mokslinės publikacijos: trys publikacijos paskelbtos Clarivate Analytics Web of Science duomenų bazėje su citavimo indeksu esančiuose žurnaluose; viena publikacija paskelbta Elsevier Scopus duomenų bazės leidiniuose, turinčiuose citavimo rodiklį; viena publikacija paskelbta tarptautinės konferencijos leidinyje, Clarivate Analytics Proceedings; trys publikacijos paskelbtos Elsevier Scopus duomenų bazės konferencijų darbų leidiniuose; dvi – recenzuojamuose tarptautinių konferencijų pranešimų rinkiniuose.Taip / Ye
Biblioteka informuoja, 2024 Nr. 1 (645)
No full textNaujai į Web of Science ir Scopus įtrauktų Vilnius Gedimino technikos darbuotojų publikacijų sąrašai ir kitos bibliotekos aktualijos.1 (645)202
Pricing and construction contract type selection model
No full textChoosing the pricing of a construction project and the type of construction contract from the perspective of customers is a responsible and complex process. The success of a construction project depends on the correct decisions taken in the preparation of tender documents. This process is complex, and the most mistakes are made in this phase. Disputes between customers and contractors arise during the implementation of a contract, which can have a significant impact on the success of the project. There have been a number of studies on the choice of construction project costs from the point of view of contractors when submitting commercial bids. The main objective of this study is to propose a mathematical model from the point of view of customer, and an online tool for the pricing of a construction project and for the selection of the type of construction contract. The paper analyses scientific sources, presents the algorithm of the mathematical model, the application of the mathematical model in a real construction project, draws conclusions and makes recommendations on the appropriate pricing and type of construction contract
Multi-criteria algorithm development for sustainable transportation in a rapidly changing environment
No full textThis study aims to develop an algorithm to optimize road transport delivery costs, with a focus on warehouse selection and delivery planning. The main objectives are to reduce delivery costs and ensure supplier reliability. The study is confined to Ukraine’s southern regions. The algorithm, based on the Pareto front in a two-criteria transport problem, when applied, its selects two additional warehouses from five reserves, finds the best delivery plan, and reduces the total delivery route length, thereby cutting transportation costs. The study concludes by highlighting the algorithm’s potential to enhance transportation efficiency and reliability in Ukraine.Taip / Yes
Non-alcoholic drinks supply chains: case of Nestle and Coca-Cola and their contribution analysis during COVID-19 period
No full textThe supply chain of the non-alcoholic drinks market involves a complex network of suppliers, manufacturers, distributors, and retailers working together to ensure the availability of a wide range of beverages to meet consumer demand. During COVID-19, the supply chains of non-alcoholic drinks faced a revenue decrease of approximately 8.5 percent. The authors identified the research gap by revising publications in the Clarivate Analytics database on multinational enterprises (MNEs) and COVID-19 disruption. The review results show that only 14 publications were dedicated to revising MNEs’ operations and responding to COVID-19 disruption when customers’ demand suddenly decreased. Even, the researches by sector are provided, there is no research covering Nestle and Coca-Cola’s supply chain contribution to COVID-19. The paper’s non-alcoholic drinks supply chain specifics are revised, particularly those related to Nestle and Coca-Cola companies. The authors used the Bloomberg database to revise the upstream and downstream of Nestle and Coca-Cola supply chains and used secondary data from Statista and other sources to investigate the specifics of their supply chains and the sales results during the COVID-19 period. The authors concluded that Nestle and Coca-Cola faced a decline in net revenue in the beverages segment compared to PepsiCo, Red Bull, and Monster, which increased net revenue during 2020 worldwide.Taip / Yes
Kūrybinio projekto moksleiviams "NETOBULAS MODERNIZMAS" ataskaita
No full textXX amžiaus architektūros objektai dažnai atsiduria visuomenės
diskusijų, apkalbų centre. Vieni žavisi modernizmu, o kiti jo nekenčia.
Dar kiti net nepastebi juos supančių pastatų.
Modernistinė, kaip ir visa, ne tik XX a. architektūra – netobula.
Kaip netobulas ir jos kūrėjas – žmogus.
VILNIUS TECH Architektūros fakulteto bendruomenė pakvietė
moksleivius atrasti savo gyvenamojoje aplinkoje XX a. statinius,
papasakoti jų istoriją ir pasidalinti savo nuomone bei idėjomis.
Įvairaus amžiaus moksleiviai piešė, rašė ir filmavo vaizdo projektus.
Projekte dalyvavo mokiniai iš įvairių Lietuvos regionų ir savo darbais
pristatė gerai žinomus objektus ir rečiau lankomus šalies kampelius.
Moksleiviai kūrybiškai žvelgė į galimą statinių ateitį ir apgailestavo,
kad kai kurie jų šiandien yra apleisti.
Projektu siekta atkreipti mokinių dėmesį į supančią aplinką, pastatus
ir ugdyti architektūrinį sąmoningumą, kuris yra reikšmingas
visapusiškai išsilavinusiai ir empatiškai asmenybei.
Projektas skatino žvelgti kritiškai, apmąstyti architektūros ir savęs
(ne)tobulumą.
Leidinyje pristatoma dalis projekto dalyvių darbų, pasakojančių
NETOBULĄ XX a. Lietuvos architektūros istoriją, dabartį ir ateitį.UAB „Art Inn“Leidykla „Artseria
Biblioteka informuoja, 2024 Nr. 53 (697)
No full textNaujai į Web of Science ir Scopus įtrauktų Vilnius Gedimino technikos darbuotojų publikacijų sąrašai ir kitos bibliotekos aktualijos.53 (697)202
Development of an Algorithm-Based Analysis-Compression Integrated Communication Tracking Management Information System (iCTMIS)
No full textThis study addresses the challenges of administrative tasks and communication tracking at Visayas State University Alangalang (VSUA), highlighting the inefficiencies in the current manual tracking of communication processes. The objective is to develop an Integrated Communication Tracking Management Information System (iCTMIS) that enhances operational efficiency by integrating Analysis Optical Character Recognition (OCR) and Lempel-Ziv-Welch (LZW) Lossless and Zlib Compression Algorithms. By employing a developmental research design and ADDIE model, the system significantly proves that there is an improvement on the data analysis and reduce disk space through efficient compression. Significant findings reveal that OCR achieves up to 90% accuracy in text conversion, while LZW techniques in compressions substantially deflates among data and file sizes. This was evaluated against ISO 9126 Software Quality Characteristics, the iCTMIS has substantially shown to optimize storage and address VSUA's operational challenges effectively. This research therefore concludes that the systematic integration of combined algorithmic frameworks analysis compression to iCTMIS pointedly enhances organizational communication and administrative workflows efficiency.Taip / Ye