Results 111 to 120 of about 456,020 (289)

Influência da densidade do solo infestado por nematoide no desenvolvimento inicial de cana-de-açúcar [PDF]

open access: yesRevista Brasileira de Engenharia Agrícola e Ambiental, 2014
Em áreas cultivadas com cana-de-açúcar no Nordeste do Brasil, a compactação do solo e a presença de altas densidades populacionais de nematoides, principalmente Meloidogyne spp. restringem severamente a produtividade agrícola. O presente estudo teve como
Carmem C. M. de Sousa   +4 more
doaj  

Modeling Blank Data Entries in Data Envelopment Analysis [PDF]

open access: yes
We show how Data Envelopment Analysis (DEA) can handle missing data. When blank data entries are coded by appropriate dummy values, the DEA model automatically excludes the missing data from the analysis.
Timo Kuosmanen
core  

Solar Energy in 2025: Global Deployment, Cost Trends, and the Role of Energy Storage in Enabling a Resilient Smart Energy Infrastructure

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This paper explores global solar PV deployment, cost trends, and grid integration challenges in 2025. It examines the role of energy storage in firming solar output and supporting electric vehicle (EV) growth, alongside policy shifts, investment flows, and technological innovations.
Ehsan Rezaee, S. Ravi P. Silva
wiley   +1 more source

Comparing the Productive Efficiency of Cooperatives and Private Enterprises: The Portuguese Wine Industry as a Case Study [PDF]

open access: yes
This paper compares the efficiency of cooperatives and private enterprises in the Portuguese wine industry, employing data envelopment analysis (DEA). The use of DEA for the analysis of comparative efficiency within a sector is a key tool in evaluating ...
Barros, Carlos Pestana   +1 more
core   +1 more source

Carbon‐Negative Upcycling of Sewage Sludge into Superiorly Stable Gel Via Liquid‐Phase Utilization Strategy for Water‐Remediation

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
This work developed a low‐temperature sludge hydrothermal coupled with gel crosslinking strategy which could upgrade the waste liquid generated from sewage sludge hydrothermal treatment into the hydrothermal‐liquid‐gel. The inventive hydrothermal‐liquid‐gel exhibited the enhanced pollutant removal capability, high synthetic stability, and superior ...
Zifan Liu   +12 more
wiley   +1 more source

Growth Performance of Sabia Grass Irrigated by Drippers Installed in Subsurface

open access: yesAgriEngineering
Studies to improve the use of subsurface drippers in pasture formation are needed. Therefore, the objective of this study was to evaluate the germination and emergence of Sabia grass as a function of drippers installed at different depths.
Mayara Oliveira Rocha   +4 more
doaj   +1 more source

The Impact of Resource Endowment and Digital Transformation on the Efficiency of Energy Transition

open access: yesEnergy Science &Engineering, EarlyView.
Resource endowment has a significant positive direct effect and a stronger spatial spillover effect on ETE, while digital transformation can improve local efficiency but has some negative spillover effects on neighboring regions. ABSTRACT In contemporary society, improving energy transition efficiency (ETE) has become a necessary measure to ensure the ...
Junding Yang   +5 more
wiley   +1 more source

Cognitive strategic groups and long-run efficiency evaluation : the case of Spanish savings banks [PDF]

open access: yes
In the framework of Cognitive Approach, this paper proposes a new method to identify strategic groups (SG) using Data Envelopment Analysis (DEA) methods.
Diego Prior, Jordi Surroca
core  

Integrated Flue‐Gas Heat Recovery for Optimized Steam and Power Generation Using Organic Rankine Cycle (ORC): A Technical and Economic Assessment

open access: yesEnergy Science &Engineering, EarlyView.
Integration of a steam cycle with an existing gas turbine increased efficiency from 32% to 51%, reducing fuel consumption by 21.4% and CO2 emissions by 18.6%. The modification generated USD 13.9 million annual savings and lowered the Levelized Cost of Energy to 38.7 USD/MWh, with a 3‐year payback.
Vahid Pirouzfar   +2 more
wiley   +1 more source

La telaraña de los Doctores. Charcas en el Congreso de Tucumán de 1816

open access: yesPrismas, 2016
El dossier La independencia de 1816 más allá del Río de la Plata ha sido organizado por Gabriel Entin especialmente para este número de Prismas.
Marta Irurozqui
doaj  

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