Browsing by Publisher "MDPI"
Now showing items 1-11 of 11
-
A Comparative Study of Metaheuristic Algorithms for Wave Energy Converter Power Take-Off Optimisation: A Case Study for Eastern Australia
Authors:
Publisher and Date:(MDPI, 2021)One of the most encouraging sorts of renewable energy is ocean wave energy. In spite of a large number of investigations in this field during the last decade, wave energy technologies are recognised as neither mature nor broadly commercialised compared to other renewable energy technologies. In this paper, we develop and optimise Power Take-off (PTO) configurations of a well-known wave energy converter (WEC) called a point absorber. This WEC is a fully submerged buoy with three tethers, which was ...
-
Corporate Social Responsibility and Financial Performance: The Moderating Role of Ownership Concentration in Turkey
Authors:
Publisher and Date:(MDPI, 2019)The objective of this study is to investigate the impact of corporate social responsibility (CSR) engagement on firm financial performance in a developing country, Turkey, and to analyze the moderating role of ownership concentration in the CSR-financial performance relationship. The sample consists of non-financial public firms listed on the Borsa Istanbul (BIST)-100 index and covers the period between 2014 and 2018. Empirical results using an instrumental variable approach show that corporate ...
-
Displacement Analysis of Geothermal Field Based on PSInSAR And SOM Clustering Algorithms A Case Study of Brady Field, Nevada-USA
Authors:
Publisher and Date:(MDPI, 2021-02)The availability of free and high temporal resolution satellite data and advanced SAR techniques allows us to analyze ground displacement cost-effectively. Our aim was to properly define subsidence and uplift areas to delineate a geothermal field and perform time-series analysis to identify temporal trends. A Persistent Scatterer Interferometry (PSI) algorithm was used to estimate vertical displacement in the Brady geothermal field located in Nevada by analyzing 70 Sentinel-1A Synthetic-Aperture ...
-
Early Steps in Automated Behavior Mapping via Indoor Sensors
Authors:
Publisher and Date:(MDPI, 2017)Behavior mapping (BM) is a spatial data collection technique in which the locational and behavioral information of a user is noted on a plan layout of the studied environment. Among many indoor positioning technologies we chose Wi-Fi BLE beacon and ultra-wide band (UWB) sensor technologies for their popularity and investigated their applicability in BM. We tested three technologies for error ranges and found an average error of 1.39 m for Wi-Fi in a 36 m(2) test area (6m x 6 m) 0.86 m for the BLE ...
-
Evaluation of Secondhand Smoke Using PM2.5 and Observations in a Random Stratified Sample in Hospitality Venues from 12 Cities
Authors:
Publisher and Date:(MDPI, 2019)Background: Turkey passed a law banning smoking in all indoor public places in 2008. In response to the indoor smoking restriction many smokers may have relocated to outdoor areas of venues. The aim of this study was to evaluate air pollution related to SHS exposure in indoor and outdoor areas of hospitality venues in 12 cities in Turkey. Method: In this cross-sectional study we evaluated hospitality venues in 12 cities in Turkey. In each visited venue we evaluated a pre-specified number of study ...
-
Exploring the Impact of Sustainability on Corporate Financial Performance Using Discriminant Analysis
Authors:
Publisher and Date:(MDPI, 2020)The impact of sustainability on corporate financial performance has been an important subject of both academic and professional debate since the 1990s. However, there is a lack of consensus in the literature, and studies from developing countries remain scarce. Accordingly, this study uses discriminant analysis to shed light on the variables that discriminate between sustainable and non-sustainable companies using the companies included in Borsa Istanbul (BIST100) (Istanbul Stock Exchange) and the ...
-
Factors Affecting Firm Competitiveness: Evidence from an Emerging Market
Authors:
Publisher and Date:(MDPI, 2016)The objective of this study is to investigate the factors affecting firm competitiveness in an emerging marketTurkey. In the paper competitiveness is proxied by a firm's financial performance. The empirical analysis is based on firms listed on Borsa Istanbul and covers the period between 2005 and 2014. Results from a firm-level panel data model indicate that return on assets is positively related to firm size international sales liquidity and growth and negatively related to leverage and R&D ...
-
Flavonoids from Sideritis Species: Human Monoamine Oxidase (hMAO) Inhibitory Activities Molecular Docking Studies and Crystal Structure of Xanthomicrol
Authors:
Publisher and Date:(MDPI, 2015)The inhibitory effects of flavonoids on monoamine oxidases (MAOs) have attracted great interest since alterations in monoaminergic transmission are reported to be related to neurodegenerative diseases such as Parkinson's and Alzheimer's diseases and psychiatric disorders such as depression and anxiety thus MAOs may be considered as targets for the treatment of these multi-factorial diseases. In the present study four Sideritis flavonoids xanthomicrol (1) isoscutellarein 7-O-[6'''-O-acetyl--d-all ...
-
Harmony Search Algorithm Based Management of Distributed Energy Resources and Storage Systems in Microgrids
Authors:
Publisher and Date:(MDPI, 2020)Microgrids are composed of distributed energy resources (DERs), storage devices, electric vehicles, flexible loads and so on. They may either operate connected to the main electricity grid (on-grid operation) or separated from the grid (islanded operation). The outputs of the renewable energy sources may fluctuate and thus can cause deviations in the voltage magnitudes especially at islanded mode. This may affect the stability of the microgrids. This paper proposes an optimization model to efficiently ...
-
Large Eddy Simulation of Wind Flow over A Realistic Urban Area
Authors:
Publisher and Date:(MDPI, 2020)A high-resolution large eddy simulation (LES) of wind flow over the Oklahoma City downtown area was performed to explain the effect of the building height on wind flow over the city. Wind flow over cities is vital for pedestrian and traffic comfort as well as urban heat effects. The average southerly wind speed of eight meters per second was used in the inflow section. It was found that heights and distribution of the buildings have the greatest impact on the wind flow patterns. The complexity of ...
-
Synthesis Molecular Docking and Anticancer Activity of Diflunisal Derivatives as Cyclooxygenase Enzyme Inhibitors
Authors:
Publisher and Date:(MDPI, 2018)Cyclooxygenase enzymes play a vital role in inflammatory pathways in the human body. Apart from their relation with inflammation the additional involvement of COX-2 enzyme with cancer activity was recently discovered. In some cancer types the level of COX-2 enzyme is increased indicating that this enzyme could be a suitable target for cancer therapy. Based on these findings we have synthesized some new diflunisal thiosemicarbazides and 124-triazoles and tested them against androgen-independent ...
