Results 11 to 20 of about 677,386 (264)

Improving comprehensive properties of high-density polyethylene matrix composite by boron nitride/coconut shell carbon reinforcement

open access: yesPolymer Testing, 2022
Simultaneously enhancing the thermal conductivity, insulation, and mechanical properties of high-density polyethylene (HDPE) composites is highly desired for electronic and electrical applications.
Xueming Yang   +4 more
doaj   +1 more source

Power-efficient software [PDF]

open access: yesCommunications of the ACM, 2010
Power-manageable hardware can help save energy, but what can software developers do to address the problem?
openaire   +1 more source

Increasing the power efficiency of an IEEE802.11a Power Amplifier [PDF]

open access: yes2005 IEEE 61st Vehicular Technology Conference, 2005
OFDM modulation is extensively used in many applications. However, it also exhibits high peak-to-average power ratios (PAPR) requiring the associated transmit amplifier to have a very large linear region. This linear amplifier does therefore have poor power efficiency. To reduce the PAPR, cupping and filtering was carried out at baseband.
Chen, K, Morris, KA, Beach, MA
openaire   +1 more source

The efficient calculation of powers of polynomials [PDF]

open access: yes13th Annual Symposium on Switching and Automata Theory (swat 1972), 1972
Suppose we are given a polynomial P(x1,…,xr) in r≥1 variables, let m bound the degree of P in all variables xi, 1≤i≤r, and we wish to raise P to the nth power, n>1. In a recent paper which compared the iterative versus the binary method it was shown that their respective computing times were O(m2rnr+1) versus O(mn)2r) when using single precision ...
openaire   +2 more sources

Performance of a Tube-bundle Heat Exchanger in a Rectangular-section Right-angle Bend Duct [PDF]

open access: yesJournal of Applied Fluid Mechanics
Three-dimensional numerical simulations are conducted to elucidate the fundamental differences in hydrodynamics and heat transfer performance between heat exchangers arranged in confined rectangular-section right-angle bend ducts and those in straight ...
X. Wang, C. Li, Y. Yan, X. Ye
doaj   +1 more source

Aerogel Product Applications for High-Temperature Thermal Insulation

open access: yesEnergies, 2022
This paper presents the results of theoretical and experimental studies to determine the optimal thickness of thermal insulation from basalt fiber and aerogel products for pipelines at temperatures of 300 and 600 °C.
Alexander V. Fedyukhin   +7 more
doaj   +1 more source

Low-carbon economy dispatching of integrated energy system with P2G-HGT coupling wind power absorption based on stepped Carbon emission trading

open access: yesEnergy Reports, 2023
To improve the renewable energy consumption capacity of integrated energy system (IES) and reduce the carbon emission level of the system, a low-carbon economic dispatch model of IES with coupled power-to-gas (P2G) and hydrogen-doped gas units (HGT ...
Xiaoxun Zhu   +5 more
doaj   +1 more source

Research and suggestions on the grid-connected operation management policy of new energy in Hunan Province [PDF]

open access: yesE3S Web of Conferences
Large-scale new energy access to the power grid will cause a series of problems such as the decrease of system frequency and voltage strength, affecting the safe and stable operation of the power grid.
Jie Sheng   +6 more
doaj   +1 more source

COUNTERVAILING POWER AND DYNAMIC EFFICIENCY [PDF]

open access: yesJournal of the European Economic Association, 2011
This paper studies the impact of buyer power on dynamic efficiency. We consider a bargaining model in which buyer power arises endogenously from size and may impact on a supplier’s incentives to invest in lower marginal cost. We challenge the view frequently expressed in policy circles that the exercise of buyer power stifles suppliers’ incentives ...
Inderst, Roman, Wey, Christian
openaire   +2 more sources

Study on Slagging Characteristics of Co-Combustion of Meager Coal and Spent Cathode Carbon Block

open access: yesEnergies, 2023
The harmless disposal of spent cathode carbon blocks (SCCBs) has become an urgent issue in the primary aluminum industry, and the disposal of SCCBs by co-combustion in pulverized coal boilers is expected to be the most effective treatment method.
Jigang Zhang   +5 more
doaj   +1 more source

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