Mokslas Lietuvos Ateitis最新文献_第5页

NEW PRODUCT DEVELOPMENT AND MARKET LAUNCH IN COSMETICS INDUSTRY 化妆品行业的新产品开发和市场推广

Mokslas Lietuvos Ateitis Pub Date : 2022-08-26 DOI: 10.3846/mla.2022.15668

G. Navickaitė

引用次数: 0

INVESTIGATION OF SURFACE REFLECTIVITY OF CEMENT CONCRETE MODULAR PAVEMENT 水泥混凝土模块化路面表面反射率的研究

Mokslas Lietuvos Ateitis Pub Date : 2022-08-25 DOI: 10.3846/mla.2022.17258

Deimantė Lunkevičiūtė, V. Vorobjovas, P. Vitta

{"title":"INVESTIGATION OF SURFACE REFLECTIVITY OF CEMENT CONCRETE MODULAR PAVEMENT","authors":"Deimantė Lunkevičiūtė, V. Vorobjovas, P. Vitta","doi":"10.3846/mla.2022.17258","DOIUrl":"https://doi.org/10.3846/mla.2022.17258","url":null,"abstract":"One of the conditions for safe and comfortable driving on roads is a surface that is reflective and clearly visible at night. The luminance of a road surface depends on the amount of light falling on it and the reflectance properties of the road surface at any point. The reflectance of a road surface depends on its physical condition, age and type, the direction of lighting, and the conditions of observation. Different road surfaces may have various reflectance characteristics depending on the surface texture, materiality and binder. Experimental studies were performed on cement concrete modular pavement slabs that differ in color and texture of the surface. The analysis of the research results showed the differences between the reflective luminance characteristics of the surface of cement concrete modular pavement, taking into account the color of the coating, the texture properties of the coating surface and surface conditions. In the case of wet or damp concrete modular coatings, the reduced luminosity coefficient is about 60 percent lower than in dry ones. The reduced luminance coefficient of the light gray coating is about 38 percent higher than that of the darker shade coating (red and dark gray). The results obtained from the research are significant for street designers in choosing the type of pavement and designing street lighting.","PeriodicalId":30324,"journal":{"name":"Mokslas Lietuvos Ateitis","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73728730","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

EVALUATION OF THE EFFICIENCY OF THE OFFICE BUILDING SYSTEMS’ MANAGEMENT BASED ON THE LONG-TERM MONITORING DATA 基于长期监测数据的办公楼系统管理效率评价

Mokslas Lietuvos Ateitis Pub Date : 2022-08-24 DOI: 10.3846/mla.2022.17251

Violeta Motuzienė

{"title":"EVALUATION OF THE EFFICIENCY OF THE OFFICE BUILDING SYSTEMS’ MANAGEMENT BASED ON THE LONG-TERM MONITORING DATA","authors":"Violeta Motuzienė","doi":"10.3846/mla.2022.17251","DOIUrl":"https://doi.org/10.3846/mla.2022.17251","url":null,"abstract":"Climate change and its consequences pose an existential threat to Europe and the world, where more than 75% of the European Union’s greenhouse gas emissions come from energy production. For this reason, it is very important to increase the energy efficiency of buildings, as the building sector is one of the biggest energy consumers with an impact on the still untapped potential for energy savings. Although buildings are constructed and certified as energy efficient, their in-use consumption is often significantly higher than expected. Especially significant in energy consumption between design and actual consumption are found in office buildings. The higher energy consumption is due to factors related to the design and operation phases. Researchers often emphasize the management of a building’s engineering systems as one of the key factors influencing a building’s energy consumption. The article analyses the existing office building and evaluates the efficiency of its energy using systems’ management based on long-term monitoring data. After identifying which systems are managed inefficiently, several management strategies have been proposed and evaluated. It was found that with simple management strategies heating energy reduction is about 20% per year.","PeriodicalId":30324,"journal":{"name":"Mokslas Lietuvos Ateitis","volume":"7 11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88820103","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

INEQUALITY OF PUBLIC TRANSPORT SERVICES IN LITHUANIAN MUNICIPALITIES 立陶宛各市公共交通服务的不平等

Mokslas Lietuvos Ateitis Pub Date : 2022-08-23 DOI: 10.3846/mla.2022.17180

Justina Ranceva, R. Ušpalytė-Vitkūnienė

{"title":"INEQUALITY OF PUBLIC TRANSPORT SERVICES IN LITHUANIAN MUNICIPALITIES","authors":"Justina Ranceva, R. Ušpalytė-Vitkūnienė","doi":"10.3846/mla.2022.17180","DOIUrl":"https://doi.org/10.3846/mla.2022.17180","url":null,"abstract":"The public transport system must be developed evenly, it must be equally accessible to all groups of the population, regardless of gender, age, financial situation, etc. In Lithuania public transport is organized differently. Access to public transport services in rural areas further away from the main transport routes is limited. This leads to social and regional exclusion, which has a negative long-term impact on the communities life. In many rural areas, the population is scattered, therefore, public transport services in such areas are economically unviable. It is not beneficial for public transport operators to organize public transport routes to places where demand is lower. As a result, both public transport passengers flows and given financing are uneven. The aim of this article is to analyze the problem of inequality of public transport services in Lithuanian municipalities based on the collected data. To achieve this aim, the review analysis research method is used in this article. Research tasks: to present the problem of regional social exclusion, to present indicators describing the inequality of regional public transport services, to collect data of the indicators under consideration and to perform a review analysis of the collected data.","PeriodicalId":30324,"journal":{"name":"Mokslas Lietuvos Ateitis","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86712365","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

ANALYSIS OF WATER SUPPLY NETWORK HYDRAULIC MODELLING INFORMATION SYSTEM 供水管网水力建模信息系统分析

Mokslas Lietuvos Ateitis Pub Date : 2022-08-23 DOI: 10.3846/mla.2022.17188

Gabija Paulauskaitė, M. Burinskienė

引用次数: 0

RESEARCH OF TECHNOLOGICAL POSSIBILITIES OF HEAT PUMPS’ APPLICATION IN DISTRICT HEATING OF RESIDENTIAL BUILDINGS 热泵在住宅区域供热中应用的技术可能性研究

Mokslas Lietuvos Ateitis Pub Date : 2022-08-23 DOI: 10.3846/mla.2022.17224

A. Rogoža, V. Misevičiūtė

{"title":"RESEARCH OF TECHNOLOGICAL POSSIBILITIES OF HEAT PUMPS’ APPLICATION IN DISTRICT HEATING OF RESIDENTIAL BUILDINGS","authors":"A. Rogoža, V. Misevičiūtė","doi":"10.3846/mla.2022.17224","DOIUrl":"https://doi.org/10.3846/mla.2022.17224","url":null,"abstract":"The main users of district heating (DH) systems are multi-apartment buildings – 53% of these buildings in Lithuania are supplied with heat from DH systems. Heating systems in buildings are the largest final consumer of energy, accounting for almost half of total energy consumption in many European countries. One of the measures planned for the Lithuanian energy policy in the heat sector of renewable energy sources (RES) until 2030 is the installation of heat pumps (HP) in the DH networks. The purpose of the study is to evaluate the technological possibilities of integrating HP into existing buildings to evaluate the low temperature heat supply. To evaluate the potential temperature lowering of the building heating system, a graph of the lowest possible building heating system temperatures is set, according to which the heat pump for the heating substation is selected, which would raise the temperature of the heat carrier supplied from DH networks to the required temperature for the heating and hot water systems of the building. Applying thermodynamic analysis, a mathematical model is developed that evaluates the ability of the HP to raise the temperature of the supplied heat carrier at the heat substation and determines the energy efficiency of such a solution. During the simulation, two alternatives of constant (regardless of outdoor air temperature) heat carrier temperatures supplied from DH networks were considered: 60 °C (alternative A) and 55 °C (alternative B). To adapt the most appropriate option for the integration of HP, it would be appropriate to combine both alternatives, i. y. to supply 60 °C from the DH network in the cold period of the year and 55 °C in the warm period of the year.","PeriodicalId":30324,"journal":{"name":"Mokslas Lietuvos Ateitis","volume":"15 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81393638","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

ANALYSIS AND USAGE OPTIONS OF “PARK AND RIDE” LOTS IN VILNIUS 维尔纽斯“停车和骑行”停车场的分析和使用选择

Mokslas Lietuvos Ateitis Pub Date : 2022-08-23 DOI: 10.3846/mla.2022.17182

Miglė Zabielaitė-Skirmantė, M. Burinskienė

引用次数: 0

EVALUATION OF SOME GREENHOUSE GASES EMISSIONS FROM LANDFILL MODELS OF MUNICIPAL SOLID WASTE 几种城市生活垃圾填埋模式温室气体排放评价

Mokslas Lietuvos Ateitis Pub Date : 2022-08-22 DOI: 10.3846/mla.2022.17245

Kamyab Mohammadi

{"title":"EVALUATION OF SOME GREENHOUSE GASES EMISSIONS FROM LANDFILL MODELS OF MUNICIPAL SOLID WASTE","authors":"Kamyab Mohammadi","doi":"10.3846/mla.2022.17245","DOIUrl":"https://doi.org/10.3846/mla.2022.17245","url":null,"abstract":"Major greenhouse gases emissions (GHGs) that cause diseases and global warming evaporate from waste disposal in landfills. For this reason waste management skills in landfills have to be revised, otherwise the magnitude of ozone layer will decrease even more and the global warming consequences will get more obviously on the environmental scale. The resent situation on waste disposal and GHGs from European Union landfills were analyzed in this article. According to survey made in one Lithuanian landfill, the average amount of municipal biodegradable waste is 58%. The research study describes current GHGs emissions quantitative analysis from five laboratory scale municipal solid waste landfill models with different conditions. Conditions in all columns were differed by changing the inlet and outlet flows of air, water/leachate, and probiotics. The object of research is the accumulation of hydrogen sulfide (H2S) and oxygen (O2) from municipal solid waste landfill models. After analysis and assessment of emitted GHG’s from the municipal solid waste landfill models, the landfill model with the lowest emissions was identified. Suitable landfill model’s condition parameters helps to reduce greenhouse gas emissions and shorten landfill aftercare period.","PeriodicalId":30324,"journal":{"name":"Mokslas Lietuvos Ateitis","volume":"13 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2022-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75275251","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

THE IMPACT OF AN OFFICE INDOOR CLIMATE SYSTEM PERFORMANCE PARAMETERS ON ENERGY CONSUMPTION 某办公室室内气候系统性能参数对能耗的影响

Mokslas Lietuvos Ateitis Pub Date : 2022-08-18 DOI: 10.3846/mla.2022.17220

Titas Maželis, Rasa Džiugaitė-Tumėnienė

引用次数: 0

APPLICATION OF SOFTWARE, REPRESENTING CUMULONIMBUS CLOUDS, IN AIR TRAFFIC CONTROL 代表积雨云的软件在空中交通管制中的应用

Mokslas Lietuvos Ateitis Pub Date : 2022-07-08 DOI: 10.3846/mla.2022.17107

Giedrius Derenčius, U. Ragauskas

引用次数: 0