Mokslas - Lietuvos ateitis最新文献

POSSIBILITIES OF APPLYING A LOW-TEMPERATURE CENTRALIZED HEAT SUPPLY NETWORK IN A MULTI-APARTMENT BUILDING DISTRICT 在多公寓楼区应用低温集中供热网络的可能性

Mokslas - Lietuvos ateitis Pub Date : 2024-06-13 DOI: 10.3846/mla.2024.21317

Edita Rugieniūtė, Juozas Bielskus

{"title":"POSSIBILITIES OF APPLYING A LOW-TEMPERATURE CENTRALIZED HEAT SUPPLY NETWORK IN A MULTI-APARTMENT BUILDING DISTRICT","authors":"Edita Rugieniūtė, Juozas Bielskus","doi":"10.3846/mla.2024.21317","DOIUrl":"https://doi.org/10.3846/mla.2024.21317","url":null,"abstract":"Lithuania‘s district heating (DH) network tends to maintain high heat transfer temperatures, which limit the efficiency of the system. The aim of this study is to assess the impact of DH and reduced heat transfer temperature in the building on space heating and the possibility of reducing the heat transfer temperature (down to 60 °C) in the DH network by looking at different scenarios and the heat demand of buildings. Three alternatives were analysed: the installation of a temperature-lowering module (mixing unit) in the thermal chamber and the retro-fitting of existing piping and heating appliances, where the temperature of the DH fluid is lowered up to 60 °C and the temperature of the radiators is lowered to 60/40/20. The possibility of lowering the DH heat transfer temperature without upgrading the network by installing heat pumps individually in the buildings or in the heat chamber is examined. An hourly data analysis of a 2-year heating system model for a typical building showed that lowering the DHW temperature to 60 °C and leaving the existing area of heating appliances in the building will not meet the heat demand of the buildings.","PeriodicalId":509183,"journal":{"name":"Mokslas - Lietuvos ateitis","volume":"38 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141345851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

IMPROVEMENT OF INCIDENT MANAGEMENT MODEL USING MACHINE LEARNING METHODS 利用机器学习方法改进事件管理模式

Mokslas - Lietuvos ateitis Pub Date : 2024-06-06 DOI: 10.3846/mla.2024.21633

Roman Jevsejev, Mindaugas Bereiša

引用次数: 0

RESEARCH AND ANALYSIS OF THE POTENTIAL USE OF PLASTIC WASTE FROM THE MECHANICAL PROCESSING OF PLASTICS 研究和分析塑料机械加工产生的塑料废料的潜在用途

Mokslas - Lietuvos ateitis Pub Date : 2024-06-06 DOI: 10.3846/mla.2024.21323

Emilija Galeckaitė, Eglė Marčiulaitienė

引用次数: 0

A REVIEW OF AQUATIC PLANT BIOMASS PRETREATMENT METHODS FOR BIOGAS PRODUCTION 水生植物生物质预处理方法在沼气生产中的应用综述

Mokslas - Lietuvos ateitis Pub Date : 2024-06-04 DOI: 10.3846/mla.2024.21313

Zamira Kazizova, A. Zagorskis

引用次数: 0

APPLICATION OF PERMEABLE ASPHALT PAVEMENT CONSTRUCTION IN TRAFFIC AREAS 交通区域透水沥青路面施工的应用

Mokslas - Lietuvos ateitis Pub Date : 2024-06-03 DOI: 10.3846/mla.2024.21287

Ieva Jakubėnaitė, A. Vaitkus, Judita Škulteckė

{"title":"APPLICATION OF PERMEABLE ASPHALT PAVEMENT CONSTRUCTION IN TRAFFIC AREAS","authors":"Ieva Jakubėnaitė, A. Vaitkus, Judita Škulteckė","doi":"10.3846/mla.2024.21287","DOIUrl":"https://doi.org/10.3846/mla.2024.21287","url":null,"abstract":"Lithuania’s total road network consists of more than 84000 km of roads, of which more than 21000 km are national roads. Roads of national importance are managed by the Lithuanian Road Administration. The remaining roads are classified as local roads managed by local governments. Road installation and maintenance often lead to the problem of surface water drainage and accumulation on the road surface. The aim of this study is to identify and propose the most appropriate permeable asphalt pavement construction to solve this problem, taking into account the purpose of the application and the class of pavement structure. The scope of the study identifies three recommended permeable asphalt pavement designs for the installation of DK 0.1-DK 1 pavement structures in ancillary streets, parking and recreation areas where light vehicle traffic with occasional heavy vehicle traffic. It has also been found that in areas of high traffic intensity, it is appropriate to use an alternative to permeable pavements – a permeable pavement design for the shoulder, where the roadway structure is impermeable to water and the shoulders are permeable to water (a permeable pavement structure is installed). The recommended permeable asphalt pavement structures, when properly selected, reduce the risk of flooding on the roadway.","PeriodicalId":509183,"journal":{"name":"Mokslas - Lietuvos ateitis","volume":"40 24","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141270316","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SAFE TRAFFIC PROBLEMS OF ELECTRIC SCOOTER IN LITHUANIA 立陶宛电动滑板车的安全交通问题

Mokslas - Lietuvos ateitis Pub Date : 2024-05-15 DOI: 10.3846/mla.2024.21284

Edita Juodvalkienė, D. Čygas, Vilma Jasiūnienė

引用次数: 0

ASSESSING THE IMPACT OF AI INTEGRATION ON ADVANCING CIRCULAR PRACTICES IN CONSTRUCTION 评估 AI 整合对推进建筑业循环做法的影响

Mokslas - Lietuvos ateitis Pub Date : 2024-05-02 DOI: 10.3846/mla.2024.21029

Thilina Ganganath Weerakoon, J. Sliogeriene, Zenonas Turskis

{"title":"ASSESSING THE IMPACT OF AI INTEGRATION ON ADVANCING CIRCULAR PRACTICES IN CONSTRUCTION","authors":"Thilina Ganganath Weerakoon, J. Sliogeriene, Zenonas Turskis","doi":"10.3846/mla.2024.21029","DOIUrl":"https://doi.org/10.3846/mla.2024.21029","url":null,"abstract":"This study provides a thorough examination of the potential and problems associated with integrating artificial intelligence (AI) into the circular economy (CE) framework within Sri Lanka’s construction industry. The study uses approach that combines primary data obtained through a questionnaire survey involving several stakeholders with secondary data analysis from academic sources. The data were interpreted using descriptive and statistical analysis, such as Kendall’s Tau correlation and Pearson’s correlation. There is an optimistic view about AI’s potential advantages, including resource and energy conservation, even if the technology is still in its early integration phases. Nevertheless, there are still significant barriers to adoption, such as a lack of knowledge and reluctance to change. The study offers a conceptual framework for combining AI with CE principles, including IoT, computer vision, and machine learning technologies to enhance the Reduce, Reuse, and Recycle (3R) CE principles. This framework supports cooperative efforts, skill development, and policy development to support sustainable building practices in Sri Lanka.","PeriodicalId":509183,"journal":{"name":"Mokslas - Lietuvos ateitis","volume":"93 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141021931","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

COMPANIES‘ STRUCTURAL CHANGES AND WAGES 公司的结构变化和工资

Mokslas - Lietuvos ateitis Pub Date : 2024-04-09 DOI: 10.3846/mla.2024.20241

Anastasija Puodžiūnienė, Tomas Baležentis

{"title":"COMPANIES‘ STRUCTURAL CHANGES AND WAGES","authors":"Anastasija Puodžiūnienė, Tomas Baležentis","doi":"10.3846/mla.2024.20241","DOIUrl":"https://doi.org/10.3846/mla.2024.20241","url":null,"abstract":"The article analyzes how structural changes taking place in companies affect wages and determine their changes. It is relevant to examine how the structural changes of companies are related to wage indicators, because this reveals one of the most important economic consequences of the structural changes of companies, which is also significant at the level of the national economy. The aim of the research is to theoretically base the essence of structural changes, to empirically evaluate how the structural changes of companies and wages are related. A statistical study was conducted, investigating the links between wages and structural changes in Lithuanian companies. The method of correlation-regression analysis was applied. The results of the study show that one of the most prominent structural effects affecting wages is the development of enterprise activity (judging by indicators of turnover and investment in fixed assets) – this structural change is positively correlated with wage growth. Another structural change in companies, which is associated with the increase in wages, is the growth of foreign capital in domestic companies. The results of the study have practical significance in understanding the factors that determine wage growth in the country’s companies and forecasting wage growth.","PeriodicalId":509183,"journal":{"name":"Mokslas - Lietuvos ateitis","volume":"98 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140723001","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

MEASURING SUSTAINABILITY IN SUPPLY CHAIN MANAGEMENT IN CONSTRUCTION COMPANIES 衡量建筑公司供应链管理的可持续性

Mokslas - Lietuvos ateitis Pub Date : 2024-03-14 DOI: 10.3846/mla.2024.19088

Ieva Cataldo

{"title":"MEASURING SUSTAINABILITY IN SUPPLY CHAIN MANAGEMENT IN CONSTRUCTION COMPANIES","authors":"Ieva Cataldo","doi":"10.3846/mla.2024.19088","DOIUrl":"https://doi.org/10.3846/mla.2024.19088","url":null,"abstract":"This paper provides an analysis of the most important sustainability indicators for SSCM in construction and gives a detailed overview of what has been scientifically accomplished in the field to date, and identifies areas for further research. The most important sustainability indicators were also grouped and presented in the literature review into the main seven assessment groups of the SSCM construction industry and ranked by experts from Northern Italy and Lithuania in several different ways. Based on the data from the Table 3, it can be inferred that a harmonious work environment among ecological sustainability indicators appeared as the most crucial indicator for respondents. Environmental education was among the most important social indicators. In the legal group, work efficiency emerged as the most significant indicator, while in the physical group, sustainable resource use was crucial. In the political realm, economic and political stability was the most important, and among technological indicators, innovation stood out. Among economic indicators, profit was the most significant sustainability indicator for respondents. A general indicator importance method combined results obtained from expert surveys using various methods. The ranking of sustainability indicators in each group was not included in the calculation of the overall indicator importance, but the results were similar in both cases. The determined importance of indicator values could be adapted for further analysis, specifically for multicriteria evaluation, as per the conceptual model shown in Figure 1. This article provides members of the construction industry with detailed calculations and results of the evaluation of key sustainability indicators related to supply chain groups. This study explores several possible ways to measure the importance of sustainability indicators, which could provide further theoretical insights into SSCM in the construction industry and help develop an accurate sustainability index model.","PeriodicalId":509183,"journal":{"name":"Mokslas - Lietuvos ateitis","volume":"86 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140241615","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

SHIPBUILDING TENDENCIES IN THE CONTEXT OF DIGITALIZATION 数字化背景下的造船趋势

Mokslas - Lietuvos ateitis Pub Date : 2024-02-27 DOI: 10.3846/mla.2024.19945

Ieva Verseckaitė, A. Jakubavičius

{"title":"SHIPBUILDING TENDENCIES IN THE CONTEXT OF DIGITALIZATION","authors":"Ieva Verseckaitė, A. Jakubavičius","doi":"10.3846/mla.2024.19945","DOIUrl":"https://doi.org/10.3846/mla.2024.19945","url":null,"abstract":"Over the last few years, the new industrial revolution 4.0 has spread across industries and affected the shipbuilding industry as well. Shipbuilding based on the principles of Industry 4.0 would transform the design, production, operation, maintenance, communication and value chains of the shipbuilding industry in all aspects. In order to create new value, the ship must become smart and must be manufactured in a smart shipbuilding process. Shipbuilding as an assembly industry is reliant on international trade because a large part of the value of a ship depends on intermediate inputs that are sourced from various countries around the world. Rapidly developing technologies also bring economic changes – more technologically advanced companies could be more efficient and would occupy a larger market share in the future. In the first part of this article systematics of value chains in the shipbuilding sector is analysed the added value created by digital technologies is evaluated in the efficient value creation chain, in the second part research methods are presented – correlation-regression analysis and the SAW method, in the third part the development trends of shipbuilding are evaluated.","PeriodicalId":509183,"journal":{"name":"Mokslas - Lietuvos ateitis","volume":"56 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140427159","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0