Results 1 to 10 of about 1,665,022 (280)

Long-Term Assessment of a Set of CO2 Concentration Sensors in an In-Use Office Building

open access: yesSensors, 2022
The measurement of the CO2 concentration has a wide range of applications. Traditionally, it has been used to assess air quality, with other applications linked to the experimental assessment of occupancy patterns and air renewal rates.
Carmen Serrano Lapuente   +3 more
doaj   +1 more source

Evaluating R&D efficiency of China’s listed lithium battery enterprises [PDF]

open access: yesFrontiers of Engineering Management, 2022
AbstractPromoting the growth of the lithium battery sector has been a critical aspect of China’s energy policy in terms of achieving carbon neutrality. However, despite significant support on research and development (R&D) investments that have resulted in increasing size, the sector seems to be falling behind in technological areas.
Bai, S.   +8 more
openaire   +1 more source

System for Indoor Comfort and Health Monitoring Tested in Office Building Environment

open access: yesApplied Sciences, 2023
The use of smart technologies and the Internet of Things (IoT) is becoming more and more popular in order to enhance the overall building performance by monitoring parameters related to occupants’ comfort and health in the built environment.
Lucia-Andreea El-Leathey   +4 more
doaj   +1 more source

Multispectral imaging for pathogen identification using a filter wheel and smartphone: A frugal innovation approach [PDF]

open access: yesEPJ Web of Conferences, 2023
To create an affordable clinical test for use in more decentralized settings, we are developing a multispectral imaging system based on a filter wheel and a smartphone.
Leroux Denis   +6 more
doaj   +1 more source

Numerical Simulation of Distribution Law of Cathodic and Anodic Areas of Pipeline under HVDC Interference [PDF]

open access: yesCailiao Baohu, 2022
In order to study the influence rule of HVDC grounding electrode interference on the cathodic area and anodic area of the pipeline systematically,the Zheneng Jinliwen pipeline was taken as the research object to establish a HVDC interference model using ...
WANG Jun, XU Haohao, LI Xiang, ZHANG Xiang, LI Hanqiu, WANG Ximing
doaj   +1 more source

Improving the Energy Conversion Efficiency for Hydrokinetic Turbines Using MPPT Controller

open access: yesApplied Sciences, 2020
The research presented in this paper involves the design of a power control system for a hydrokinetic turbine previously tested in real operating conditions.
Rareș-Andrei Chihaia   +5 more
doaj   +1 more source

On greedy heuristics for computing D-efficient saturated subsets [PDF]

open access: yesOperations Research Letters, 2020
Let $\mathcal{F}$ be a set consisting of $n$ real vectors of dimension $m \leq n$. For any saturated, i.e., $m$-element, subset $\mathcal{S}$ of $\mathcal{F}$, let $\mathrm{vol}(\mathcal{S})$ be the volume of the parallelotope formed by the vectors of $\mathcal{S}$.
Harman, Radoslav, Rosa, Samuel
openaire   +3 more sources

Parametric Study of Unsteady Flow and Heat Transfer of Compressible Helium–Xenon Binary Gas through a Porous Channel Subjected to a Magnetic Field

open access: yesFluids, 2021
A numerical analysis of unsteady fluid and heat transport of compressible Helium–Xenon binary gas through a rectangular porous channel subjected to a transverse magnetic field is herein presented. The binary gas mixture consists of Helium (He) and Xenon (
Pornthep Pattanavanitkul, Watit Pakdee
doaj   +1 more source

Data-Based RC Dynamic Modelling to Assessing the In-Situ Thermal Performance of Buildings. Analysis of Several Key Aspects in a Simplified Reference Case toward the Application at On-Board Monitoring Level

open access: yesEnergies, 2020
This paper reports the application of RC dynamic models for assessing thermal performance of buildings from in-situ tests (obtaining the U value for the walls, and the UA value and gA value for the whole buildings).
Yessenia Olazo-Gómez   +5 more
doaj   +1 more source

Hedge fund activism, R&D efficiency and firm value

open access: yesResearch in International Business and Finance, 2023
We investigate the effectiveness of hedge fund activism in addressing inefficient R&D investment and creating long-term value at target firms. Using an endogenous growth model to estimate efficient R&D investment levels, we find target firms exhibit a tendency to overinvest in R&D.
Watson, Justin   +2 more
openaire   +2 more sources

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