Athens journal of sciences最新文献

The Growth of Crayfish, which Serves as an Indicator of Clean and Healthy Water Ecosystems in the Mediterranean Region 作为地中海地区清洁和健康水生态系统指标的螯虾的生长情况

Athens journal of sciences Pub Date : 2024-05-24 DOI: 10.30958/ajs.11-2-1

S. Benzer, R. Benzer

{"title":"The Growth of Crayfish, which Serves as an Indicator of Clean and Healthy Water Ecosystems in the Mediterranean Region","authors":"S. Benzer, R. Benzer","doi":"10.30958/ajs.11-2-1","DOIUrl":"https://doi.org/10.30958/ajs.11-2-1","url":null,"abstract":"The narrow-fingered freshwater crayfish, also known as Pontastacus leptodactylus in scientific terms and referred to as such in Turkish, is a prevalent species in the inland waters of the Mediterranean region. This crayfish serves as an indicator of clean and healthy water ecosystems due to its high sensitivity to pollution and environmental changes. Its presence signals the maintenance of water quality and a balanced ecosystem. In a study on 283 freshwater crayfish in Hirfanlı Dam Lake during July and August 2023, it was observed that 53.36% were male and 46.64% were female. Length ranged from 80.44 mm to 121.11 mm, and weight varied between 11.61 g and 43.93 g. Average length and weight for males were 95.9874 ± 6.4603 mm and 24.1861 ± 5.3696 g, for females were 95.0981 ± 5.5519 mm and 21.5193 ± 3.4488 g, and for combined sexes were 95.5724 ± 6.0594 mm and 22.9422 ± 4.7579 g. The length-weight relationship (LWR) was established for females (W=0.00166359 ×TL2.0767), males (W=0.00019587×TL2.5651), and all individuals (W=0.00037111 ×TL2.4162). Exponential values \"b\" for LWR were 2.0767 (r2=0.993), 2.5651 (r2=0.986), and 2.4162 (r2=0.987), respectively. The study compared traditional LWR approaches with artificial intelligence methods for growth analysis, suggesting the latter as a viable alternative in assessing freshwater crayfish growth in aquatic systems.","PeriodicalId":91843,"journal":{"name":"Athens journal of sciences","volume":"2 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141099228","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

Infrastructures of Large-Scale Geothermal Energy Projects in Kenya: Materialization, Generativity, and Socio-Economic Development Linkages 肯尼亚大型地热能源项目的基础设施：物质化、生成性和社会经济发展联系

Athens journal of sciences Pub Date : 2024-05-24 DOI: 10.30958/ajs.11-2-4

Chigozie Nweke-Eze

{"title":"Infrastructures of Large-Scale Geothermal Energy Projects in Kenya: Materialization, Generativity, and Socio-Economic Development Linkages","authors":"Chigozie Nweke-Eze","doi":"10.30958/ajs.11-2-4","DOIUrl":"https://doi.org/10.30958/ajs.11-2-4","url":null,"abstract":"The linkages between infrastructures and socio-economic development have become increasingly complex and varied in transdisciplinary human science scholarship. In the Global South context in particular, these linkages entail unusual geographies of diffusion that defies many easy narratives. Using the case of geothermal energy projects in Kenya, this article explores the materialization and generativity of infrastructures in large-scale projects and their complex linkages to socio-economic development. In so doing, the paper shows how the delivery of ‘core’ infrastructure projects enable the provision of ‘other’ infrastructures – ‘required’ and ‘generated’ infrastructures, all of which entail different socio-economic development linkages for different interest groups at national and local community levels. In exploring these processes, the paper engaged with multi-disciplinary scholarship on the materialization and generativity of infrastructures and their variegated and multifaceted linkages to socio-economic development. A methodological combination of expert and informal interviews, document analysis, and project-sites observations form the basis of our analysis. Keywords: infrastructures, large-scale geothermal energy projects, materialization, generativity, socio-economic linkages, Global South, Kenya","PeriodicalId":91843,"journal":{"name":"Athens journal of sciences","volume":"57 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141102056","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

Generative Urban Design in the Field of Infrastructure: An Optimizing Solution for Connecting Fier and Vlora County by a 600 m Bridge over Selenica River, Albania 基础设施领域的生成性城市设计：通过跨越塞莱尼察河的 600 米大桥连接阿尔巴尼亚菲耶和发罗拉县的优化方案

Athens journal of sciences Pub Date : 2024-05-24 DOI: 10.30958/ajs.11-2-3

Ilda Rusi, Albi Alliaj

{"title":"Generative Urban Design in the Field of Infrastructure: An Optimizing Solution for Connecting Fier and Vlora County by a 600 m Bridge over Selenica River, Albania","authors":"Ilda Rusi, Albi Alliaj","doi":"10.30958/ajs.11-2-3","DOIUrl":"https://doi.org/10.30958/ajs.11-2-3","url":null,"abstract":"The way we think about infrastructure is being completely changed by parametric and generative design. Meanwhile the contemporary urban planning process is often viewed as a complicated and fragmented workflow. The main goal is to optimize solutions with tens of thousands of variations while concurrently taking into consideration various limits. This Paper will discuss and demonstrate the use of a generative urban design framework at the local scale. Although relevant to infrastructure, generative design is not limited to architecture. And on the other hand, the construction sector is becoming more specialized and complex. The close cooperation between structural engineers, architects, urban planners and other stakeholders is a major driving force behind modern projects. The building site is cut off from architects and engineers, particularly in the digital age. To ensure a three-dimensional scope of work, digital models are therefore necessary. The difficulty is that the structural model and architectural model do not match up exactly. A generative design is therefore explained in the case of a bridge design. Bridges are effective structures that provide a variety of topologies, materials, and geometries. This paper examines how the geometry and topology of a 600 meters long bridge can bring an optimal solution for connecting two nearby counties, Fieri and Vlora. The performance of the bridge can be examined by altering the geometrical parameters in addition to the topology. By adding more design factors and offering a fresh method for bridge optimization, the study aims in further developing the initial parametric model. Since the process of changing the design is quite quick and the analysis is displayed instantly, using parametric design to study alternative options for bridges could be highly helpful to designers. Keywords: generative design, bridge, geometry, typology, optimization, deflection.","PeriodicalId":91843,"journal":{"name":"Athens journal of sciences","volume":"75 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141101751","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

Identifying Sustainability Efforts in Company’s Reports Using Text Mining and Machine Learning 利用文本挖掘和机器学习识别公司报告中的可持续发展工作

Athens journal of sciences Pub Date : 2024-05-24 DOI: 10.30958/ajs.11-2-2

Evangelos Xevelonakis, Tanbir Mann

引用次数: 0

Proof of Principle of Wastewater Treatment using Plasma Discharge to Reduce the Amount of Methylparaben 利用等离子体放电处理废水以减少苯甲酸甲酯用量的原理验证

Athens journal of sciences Pub Date : 2024-02-21 DOI: 10.30958/ajs.11-1-2

Christoph Schattschneider, Sina Piontek, Hannes Jacobs, Andrea Böhme, Concetta Sirena, Andreas Foitzik

引用次数: 0

Quality Testing in Aluminum Die-Casting – A Novel Approach using Acoustic Data in Neural Networks 铝压铸件的质量检测 - 一种在神经网络中使用声学数据的新方法

Athens journal of sciences Pub Date : 2024-02-21 DOI: 10.30958/ajs.11-1-1

Manfred Rössle, Stefan Pohl

{"title":"Quality Testing in Aluminum Die-Casting – A Novel Approach using Acoustic Data in Neural Networks","authors":"Manfred Rössle, Stefan Pohl","doi":"10.30958/ajs.11-1-1","DOIUrl":"https://doi.org/10.30958/ajs.11-1-1","url":null,"abstract":"In quality control of aluminum die casting various processes are used. For example, the density of the parts can be measured, X-ray images or images from the computed tomography are analyzed. All common processes lead to practically usable results. However, the problem arises that none of the processes is suitable for inline quality control due to their time duration and to their costs of hardware. Therefore, a concept for a fast and low-cost quality control process using sound samples is presented here. Sound samples of 240 aluminum castings are recorded and checked for their quality using X-ray images. All parts are divided into the categories \"good\" without defects, \"medium\" with air inclusions (\"blowholes\") and \"poor\" with cold flow marks. For the processing of the generated sound samples, a Convolutional Neuronal Network was developed. The training of the neural network was performed with both complete and segmented sound samples (\"windowing\"). The generated models have been evaluated with a test data set consisting of 120 sound samples. The results are very promising. Both models show an accuracy of 95% and 87% percent, respectively. The results show that a new process of acoustic quality control can be realized using a neural network. The model classifies most of the aluminum castings into the correct categories. Keywords: acoustic quality control, aluminum die casting, convolutional neural networks, sound data","PeriodicalId":91843,"journal":{"name":"Athens journal of sciences","volume":"17 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140445003","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

Algorithm for Control of Traffic Flow in an Intelligent Transport System 智能交通系统中的交通流控制算法

Athens journal of sciences Pub Date : 2024-02-21 DOI: 10.30958/ajs.11-1-3

Natallia Yankevich

{"title":"Algorithm for Control of Traffic Flow in an Intelligent Transport System","authors":"Natallia Yankevich","doi":"10.30958/ajs.11-1-3","DOIUrl":"https://doi.org/10.30958/ajs.11-1-3","url":null,"abstract":"Traffic management in modern Intelligent Transport Systems (ITS) includes monitoring the actual traffic situation in real time and management transport traffic using this information. At the same time, cars as ITS components must be equipped with communication capabilities for exchanging information with other vehicles (V2V) and road infrastructure (V2I). Such approach is connected with usage of special equipment connected to on-board network for local data collection, which can be exchanged between cars and with a central communication station using wireless Internet. At the same time, the issue of developing the traffic organization algorithms themselves is still open. This problem can be solved with the help of game theory, a fairly new but rapidly developing part of modern mathematics. Unlike optimization theory, which studies the possibilities of constructing an optimal solution for the entire system as a whole, game theory studies ways to optimize individual benefits in competition with other persons (events) that rationally seek to satisfy their own benefits. The problem of \"smart\" regulation of intersections is quite difficult to solve a problem, nevertheless it is possible due to rapid development of ICT technologies. Keywords: ITS, transport crossroads, game theory","PeriodicalId":91843,"journal":{"name":"Athens journal of sciences","volume":"195 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140443610","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

An Analysis of Stream Flow and Flood Frequency: A Case Study from Downstream of Kelani River Basin, Sri Lanka 溪流流量和洪水频率分析：斯里兰卡凯拉尼河流域下游案例研究

Athens journal of sciences Pub Date : 2024-02-21 DOI: 10.30958/ajs.11-1-4

Kumudika K.E. Perera

{"title":"An Analysis of Stream Flow and Flood Frequency: A Case Study from Downstream of Kelani River Basin, Sri Lanka","authors":"Kumudika K.E. Perera","doi":"10.30958/ajs.11-1-4","DOIUrl":"https://doi.org/10.30958/ajs.11-1-4","url":null,"abstract":"River floods in Sri Lanka are mainly associated with extreme rainfall events. The Kelani and Kalu rivers are recorded the highest flood frequencies and the accompanying flood damages among the river basins in wet zone (UNDP, 2011). Therefore, the specific objective of the study is to estimate the temporal probability of occurrence of flood events in downstream of Kelani river basin. Secondary data were used for the study. Daily discharges data were obtained from Hanwella gauging station for the period of 1990 to 2019 from the Department of Irrigation, Sri Lanka. Trend analysis, normal distribution and flood frequency analysis have been used. The results of the study revealed that there was a bi-modal pattern of discharges that occurred in June and October. The results also indicated that ten return periods were covered the total period of 30 years, and there was a 97 per cent probability of flood occurrence almost annually and 64 per cent probability of occurring once every two years. This study, therefore, was recommended to design flood control structures for mitigating flood risk; and to determine the economic value of flood control projects and the effect of encroachments on flood plain. Keywords: floods, frequency, downstream, return period, probability","PeriodicalId":91843,"journal":{"name":"Athens journal of sciences","volume":"5 21","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140442855","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 Availability Level of the Aesthetic Approach in Mathematics Textbooks for the Higher Grades at the Primary Stage in Saudi Arabia 沙特阿拉伯小学高年级数学教科书中美学方法的可用程度

Athens journal of sciences Pub Date : 2023-11-27 DOI: 10.30958/ajs.10-4-4

Khalid Mohammed Alkhuzaim, Thamer Ali Alwahbi

引用次数: 0

Heat Storage as Evidence of Hydrographic Cycles in the Southeastern Mediterranean Basin 蓄热是地中海东南盆地水文周期的证据

Athens journal of sciences Pub Date : 2023-11-27 DOI: 10.30958/ajs.10-4-1

Ibrahim A. Maiyza, T. El-Geziry, Shimaa I. Maiyza

{"title":"Heat Storage as Evidence of Hydrographic Cycles in the Southeastern Mediterranean Basin","authors":"Ibrahim A. Maiyza, T. El-Geziry, Shimaa I. Maiyza","doi":"10.30958/ajs.10-4-1","DOIUrl":"https://doi.org/10.30958/ajs.10-4-1","url":null,"abstract":"Numerous studies were conducted in the Southeastern Mediterranean Sea to determine whether variations in the hydrography and fisheries exhibit cyclic behaviour. This work investigated the long-term cyclic behaviour of physical properties in the Southeastern Mediterranean basin; taking heat storage as a parameter of interest. Heat storage is said to be a more accurate component to measure the probable thermal cyclic behaviour within a specific basin; it allows for the elimination of diurnal (full) and monthly effects on the examined thermal behaviour to a lesser extent. The work aims to: (1) provide the best fit model of heat storage anomaly changes; and (2) investigate any cyclic behaviour of change over a considerable span. The hydrographic data (temperature and salinity) were scattered over the period 1889-2021. However, because of the scarcity of data over the period 1892-1964, calculations of the mean annual heat storage and mean annual heat storage anomaly focused on the period 1965-2021 of continuous records. The minimum mean annual heat storage anomaly of the 300 m layer ranged from -9.0E9 Jm-2 (1992) to +0.84E9 Jm-2 (1994), with an overall mean of -0.016E9 Jm-2. +0.43E9 Jm-2 was the standard deviation from the mean. The best fit model was produced for the variations in the mean annual heat storage anomaly. This was represented by a cubic equation with R2 of 0.21. The minimum anomaly occurred in 1980 and the maximum in 2015. Therefore, the results confirmed the 70-year cycle of variation in the hydrographic conditions in the south-eastern Mediterranean region. Keywords: Southeastern Mediterranean Sea, heat storage, anomalies, cycles","PeriodicalId":91843,"journal":{"name":"Athens journal of sciences","volume":"43 1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139227935","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