Database.use.hdl: https://hdl.handle.net/20.500.14172/20326
Now showing 1 - 10 of 27
  • conference paper
    Štraupaitė, Samanta
    IOP conference series: Earth and environmental science : 8th Conference of the Sustainable Solutions for Energy and Environment EENVIRO 2022 : 16/10/2022 - 21/10/2022 Bucharest, Romania
    The idea of sustainable development at the global level occupies one of the most important places. The Earth can manage itself and maintain all biological diversity, adhere to democracy, equality, take into account human rights, freedom and equal opportunities. Since climate change poses an increasing risk to human health and safety, the development of public ecological awareness becomes extremely important. The fact that the problem of climate change is increasing and confirmed by increasing emissions of greenhouse gases, rising sea levels, longer droughts, stronger and more frequent storms, melting ice sheets, larger and more frequent fires. Advances in technology such as smartphones, streaming, social media, and touch screens have affected teenagers’ connection to nature. Being interested in the ecological citizenship of older teenagers raises the question, why and how can the younger generation contribute to the solution of ecological problems? Whether there are educational models that can help strengthen young people’s beliefs and abilities to solve climate change problems. In this article will be reviewed the literature from the aspect of ecological culture education, ecological position as the goal of education, the concept of ecological citizenship, its education and suggestions.
      1Scopus© SNIP 0.255
  • conference paper
    Hariyadi, Hariyadi
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    Aris Winaya
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    Muhammad Zainuri
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    Norma, Afiati
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    Sya’rani, Lachmudin
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    E3S web of conferences: 3rd International Conference on Natural Resources and Life Sciences (NRLS) 2020 : virtual, September 23-24, 2020
    The objective of the study was to determine the growth pattern of clam Potamocorbula faba inhabited the estuarine of Permisan Bay, Indonesia by using the Linear Allometric Model (LAM). Its also evaluated by using the length-weight relationships (LWR) and Fulton’s condition factor (K–value). A total of 7 996 specimens with length intervals of 3.5 mm to 17 mm and weight intervals of 0.013 g to 0.636 g were collected from nine sites in Permisan Bay. Based on the length-weight relationships (LWR), equations in ST–1 (0.000886870 L2.17379); ST–2 (0.000884219 L2.15471); ST–3 (0.000832626 L2.18971); ST–4 (0.000746758 L2.21150); ST–5 (0.000687148 L2.28593); ST–6 (0.000765876 L2.23830); ST–7 (0.000657461 L2.31064); ST–8 (0.000379673 L2.52229); and ST–9 (0.000799816 L 2.22922) were obtained. Regarding the b–value, almost all sites showed b < 3, and thus the growth pattern could be categorized as negative allometric. Condition factor (K-value) in all nine sites ranged between 1.1101 to 1.1552. The highest K-value was from ST–7 while ST–2 showed the lowest. During the study period (September 2014 to April 2015), Fulton’s condition factor (K–value) of all nine sites was not significantly different (P > 0.05).
      16Scopus© SNIP 0.213
  • conference paper
    Ikenna-Uzodike, Chiamaka Emilia
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    Janin, Yin Jin
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    Wen, Wei
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    Rivera-Diaz-del-Castillo, Pedro E.J.
    Procedia structural integrity: 23 European Conference on Fracture – ECF23
    Some industrial applications require properties of materials to be determined to evaluate components’ safety in the event of loading and impact. Understanding the behaviour of materials subjected to extreme dynamic loading will aid in enhancing their design. This work is based on developing methods to appraise high loading rate measurements. Different approaches to quantify material properties such as finite element method (FEM), instrumented Charpy testing, and impact testing using servo-hydraulic testing ma- chines are included. Testing is performed at various loading rates, extending existing quasi-static fracture toughness determination to higher loading rates, and accounting for strain-rate dependent properties. The high loading rate servo-hydraulic test machine lo- cated at TWI, Cambridge has the capacity to test up to a displacement rate of 20 m/s. The force, displacement, and time parameters are captured by Digital Image Correlation (DIC), which improves the accuracy of the results obtained from experiments. More- over, the underlying plasticity theory to capture the influence of the strain rate is presented, along with damage constants for FEM calculations adopting the Johnson-Cook model. In addition to the Johnson-Cook approach, analytical solutions using dislocation evolution theory were applied which features the effects of phonon drag and dynamic recovery coefficient in body-centered cubic materials of which X65 grade steel was applied. Also, a deep learning framework was built to predict the tensile curves when given specific test conditions and sample specifications. It was found that high strain rate tests lead to local change at the crack tip which increases plasticity and reduces fracture toughness with single-edged notched three-point bend specimen. The yield strength of the material increased with loading rates during tensile testing leading to a ductile to brittle transition of metals. These strategies were used to establish a revised approach for high strain rate testing and predicting stress-strain curves with a machine learning algorithm.
      14  1Scopus© SNIP 0.461
  • conference paper
    Faturachman, Danny
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    Yandri, Erkata
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    Tri Pujiastuti, Endang
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    Hendroko Setyobudi, Roy
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    Yani, Yahya
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    Susanto, Herry
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    Purba, Washington
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    Krido Wahono, Satriyo
    E3S web of conferences : 1st International Conference on Bioenergy and Environmentally Sustainable Agriculture Technology (ICoN BEAT 2019) : Malang, East Java, Indonesia, November 7-8, 2019
    The purpose of this study is to perform the techno-economic analysis of photovoltaic system utilization for lighting and cooling of Ferry Ro/Ro 500 GT. The world is facing a dilemma of increasing dependence on fossil energy with decreasing supply. This situation must be anticipated by all sectors by energy efficiency (EE) and utilizing renewable energy (RE). Especially for RE in the transportation sector, ships as consumers of oil energy can also take advantage of solar energy sources, for example for lighting and cooling. For that purpose, five steps must be taken. First, determine the design specifications. Second, determine the specifications of components of the PV system. Third, calculate the power required for lighting equipment. Fourth, calculate the power required for the cooling system. Fifth, make an investment comparison for propulsion systems between diesel engines and photovoltaic systems. The results show that the energy required for lighting and cooling system as well as for propulsion systems can be placed in the deck area of 148.8 m2 for all system components, such as; PV modules, charge controllers, batteries, and inverter. This study can provide an overview of the use of PV system in designing the environmentally new or renovation ships.
    Scopus© Citations 4  2Scopus© SNIP 0.364
  • conference paper
    Anam, Choirul
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    Harini, Noor
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    Damat, Damat
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    Wahyudi, Ahmad
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    Witono, Yuli
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    Kuswardhani, Nita
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    Shony Azar, Moh.Azus
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    Rachmawati, Diana
    E3S web of conferences: 1st International Conference on Bioenergy and Environmentally Sustainable Agriculture Technology (ICoN BEAT 2019) : Malang, East Java, Indonesia, November 7-8, 2019
    The purpose of this study was to determine the potential of low commercial value fish species in Lamongan Regency, East Java, Indonesia. The processed data included primary and secondary data. Data were processed using the LQ method and analyzed descriptively by way of compiling data into tables. The survey results showed that there are ten types of low commercial value fish in Lamongan Regency, East Java, Indonesia, namely Sardinella fimbriata (Tembang fish), Leiognathus bindus (Peperek fish), Harpadon nehereus (Puso fish), Sardinella lemuru, (Lemuru fish), Saurida tumbil (Beloso fish), Gerres abbreviatus (Kapasan fish), Anodontostoma chacunda (Juwi fish), and Cynoglossus lingua (Lidah fish). The results of the LQ method showe that there are three types of fish that have the potential to be made of high economic value products, namely L. bindus (11.36), A. chacunda (2.35), and S. fimbriata (2.32). Fish Auction (TPI) that has the potential in terms of fish productivity to be developed is TPI Weru, Lamongan, East Java, Indonesia. The typology of fishermen in TPI Weru has less experience working as a fisherman than other TPI but the level of education is higher and the age of fishermen is younger so that it affects the productivity of fish catches.
    Scopus© Citations 1  2Scopus© SNIP 0.364
  • conference paper
    Rosyidi, Hamdi
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    Tarik Ibrahim, Jabal
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    Sutawi, Sutawi
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    Rachmawati, Diana
    E3S web of conferences : 1st International Conference on Bioenergy and Environmentally Sustainable Agriculture Technology (ICoN BEAT 2019) : Malang, East Java, Indonesia, November 7-8, 2019
    This study aimed to examine the factors and the influence of group dynamics and the independence of fishing group members in catch fisheries agribusiness activities. This research was carried out using a survey method in the Rukun Nelayan Blimbing in Paciran District, Lamongan Regency, East Java Province, Indonesia from February to March 2019. The result showed the group dynamics and independence of fishermen in catch fisheries was high, but group dynamics did not influence the independence of fishermen in catching fisheries agribusiness. The factors that influence group dynamics were structuring, coaching and development, atmosphere, effectiveness. The factors affected the independence of the group were the addition of production facilities, prices, market, and fishermen. Those factors are needed to attain the good management in maximum sustainable yield (MSY).
    Scopus© Citations 1  2Scopus© SNIP 0.364
  • conference paper
    Siregar, Kiman
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    Luthfi Machsun, Achmadin
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    Sholihati, Sholihati
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    Alamsyah, Rizal
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    Ichwana, Ichwana
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    Christian Siregar, Nobel
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    Syafriandi, Syafriandi
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    Sofiah, Intan
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    Miharza, Try
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    Muhammad Nur, Syukri
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    Hendroko Setyobudi, Roy
    E3S web of conferences : 4th International Conference on Electrical Systems, Technology and Information (ICESTI 2019) : Bali, Indonesia, October 24-27, 2019
    New energy and renewable widely available in Indonesia. One of them is the biomass that can be used with gasification technology. Biomass is an organic matter to which derived from biological materials. This research was used integration gasification system with a gas engine, which works more properly with CO, and H2. The advantage of this biomass power plant compared the environmental impact on other types of plants such as coal-fired power plants, diesel power plants, etc. Therefore the potential of environmental impacts was generated, it is necessary to calculate quantitatively through the life cycle assessment methods. This research aimed to calculate impact assessment on electricity production from a Biomass Power Plant system through a life cycle assessment with boundary cradle to grave in Indonesia. The study revealed that greenhouse gas (GHG) emission of electricity production from an empty fruit bunch palm oil mill was 0.15 kg CO2-eq kWh–1. The gas engine was the highest GHG emission contributor during its life cycle. Empty fruit bunch as a source of biomass for electricity production was considered as climate-friendly power plant system due to its potential in reducing GHG emission from palm oil production and released lower GHG emission.
    Scopus© Citations 9  3Scopus© SNIP 0.608
  • conference paper; ; ; ; ;
    VEHITS 2020 : proceedings of the 6th international conference on Vehicle Technology and Intelligent Transport Systems : May 2-4, 2020. Vol. 1. Setúbal : SciTePress, 2020. ISBN 9789897584190., p. 63-67
    This paper presents the initial research findings from the Klaipeda port monitoring action related to Blue economy development initiative in the Baltic Sea. Use case study demonstrates the possibility to address the problem of information system deployment in harsh industrial environment to gather valuable statistical knowledge. Custom made monitoring and data transmission units were developed to utilize the best practice of engineering to solve real problems of Klaipeda Port. Several key operations and parameters were monitored during the research, including containers spreader movements, physical characteristics of the cables, metal constructions. Initial results suggested that crane operators’ involvement in the control of the cargo movement produced incorrect control patterns (joystick movements) that delayed port operations. Each control movement of the joystick needs to have a direct real-time feedback from the spreader (actual movement of the cargo). Feedback control functiona lity will allow adjusting the spreader movement according to the operator and will decrease the cargo transportation time during constant breaks.
      7Scopus© Citations 3
  • conference paper;
    European proceedings of social & behavioural sciences: Joint Conference ISMC 2018-ICLTIBM 2018 : 14th International Strategic Management Conference & 8th International Conference on Leadership, Technology, Innovation and Business Management. London : Future Academy, 2019, vol. 54, art. no. 62., p. 727-738
    Tourism is recognized as a very important sector for increasing GDP, creating new jobs, activating the balance of international trade. However, fierce competition in tourism sector may lead to the negative economic consequences. The article aims to carry out the economic evaluation of Lithuanian tourism development indicators. In order to achieve this aim different methods were used: critical analysis of scientific sources, comparative and systematic analysis of statistical data, correlation analysis (Pearson correlation coefficient). The impact of tourism on economic growth was assessed by analysing the changes in the GDP multiplier effect of investments attracted by tourism cluster, taxes collected, and multiplier effect. It was found that the consumption of tourism products has a significant impact on GDP. Tourism consumption reflects on accommodation establishments on the basis of income and their impact on GDP, created in Lithuania. Confirmed the statistical causality of tourism development and the economic situation in the country. Business development in the tourism sector, establishing new and expanding already existing enterprises create favourable conditions for the establishing new job vacancies, helps to tackle unemployment rates.
      2
  • research article
    Ginters, Egils
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    Ruiz Estrada, Mario Arturo
    Procedia computer science: ICTE in Transportation and Logistics 2018 (ICTE 2018). Amsterdam : Elsevier Science, 2019, vol. 149., p. 1-2
    Scopus© Citations 1Scopus© SNIP 1