Results 81 to 90 of about 366,250 (237)

AS‐pHopt: An Optimal pH Prediction Model Enhanced by Active Site of Enzymes

Advanced Intelligent Discovery, EarlyView.
To address the low accuracy of enzyme optimal pH (pHopt) prediction, this study develops active site‐based pHopt (AS‐pHopt), a prediction model enhanced by active site information and pseudo‐label prediction. Integrating key structural and physicochemical features affecting enzyme pHopt, AS‐pHopt uses Evolutionary Scale Modeling (ESM)‐2 with active ...
Wenxiang Song, Xinmin Li, Hongbo Yu, Le Xiong, Guixia Liu, Weihua Li, Yun Tang   +6 more
wiley   +1 more source

Application of Dynamic Hysteresis Band Height Control to Improve Output Voltage Transient in Boost and Positive Buck-Boost Converters [PDF]

, 2009
This paper presents dynamic hysteresis band height control to reduce the overshoot and undershoot issue on output voltage caused by load change. The converters in this study are Boost and Positive Buck-Boost (PBB) converters.
A. Boora, Arash, Boora, Arash A., Ghosh, Arindam, Zare, Firuz, Boora, A., zare, F.   +5 more
core  

Lost ground, lost value: Investigating the relationship between soil erosion and agricultural land value

American Journal of Agricultural Economics, EarlyView.
Abstract This study examines the impact of soil erosion on agricultural land values in the United States (US) Midwest. Based on a novel county‐level panel data set with information on soil erosion levels and agricultural land values covering five census years (1997, 2002, 2007, 2012, and 2017), we separately investigate the direct effect of two types ...
Le Chen, Roderick M. Rejesus, Hongqiang Yan, Serkan Aglasan   +3 more
wiley   +1 more source

Performance Analysis of LLC Resonant and Pulse Width Modulation Direct Current- Direct Current Converters for Buck and Boost Operation

This paper accentuates the study of LLC resonant converter by a comparative analysis of the properties of LLC resonant and pulse width modulation direct current-direct current converters.
Mohammad Mustafizur Rahman, Arif Ahammad, Ifte Khairul Amin, Rashed Abdullah   +3 more
core   +1 more source

Redistributive land reforms, agricultural productivity, and structural change: New cross‐national evidence

American Journal of Agricultural Economics, EarlyView.
Abstract Large‐scale land reforms constitute a substantial redistribution of wealth and reallocation of agricultural land, which is a major form of asset and production input in developing countries. While land redistribution (from the rich to the poor) remains a highly controversial issue, extensive evidence on its effect is limited.
Devashish Mitra, Abdulaziz B. Shifa, Lan Anh Tong, Mehmet A. Ulubasoglu   +3 more
wiley   +1 more source

Realization of a Photovoltaic Fed Sparse Alternating Current (AC)-Link Inverter

The Journal of Engineering Research, 2016
In this paper, a soft-switched alternating current (AC)-link buck-boost inverter with a reduced number of switches, referred to as a sparse AC-link buck-boost inverter, was designed and implemented for a photovoltaic (PV) interface. Important features of
R. Ramaprabha, G. Ramya, U. Ashwini, A.H. Fathima Humaira   +3 more
doaj   +1 more source

?????? ?????? ?????? ????????? ?????? ???????????? ??????-?????? DC-DC Buck-Boost ?????????

, 2019
This paper presents a high performance DC-DC buck-boost converter by voltage-mode method. In a wide input voltage range, the converter operates in boost-mode, buck-boost mode and buck-mode. The converter is implemented in a TSMC 0.18um BCD process.
Choi, Yun Young, Cho, Jeonghoon, Kim, Jae Joon, Kim, Myeong Woo   +3 more
core  

The Herfindahl neutral point: A firm‐level threshold for managing market concentration with evidence from US hog packing

American Journal of Agricultural Economics, EarlyView.
Abstract This paper derives a firm‐level threshold, the Herfindahl Neutral Point, from the standard concentration index used in merger review. At this threshold, a marginal expansion leaves the index unchanged. Firms below the threshold reduce concentration when they expand; firms above it increase concentration.
Andrew J. Keller, Krishna P. Paudel
wiley   +1 more source

Topological Design and Modulation Strategy for Buck-Boost Three-Level Inverters

, 2009
Udgivelsesdato: JulyTo date, designed topologies for dc-ac inversion with both voltage buck and boost capabilities are mainly focused on two-level circuitries with extensions to three-level possibilities left nearly unexplored.
Loh, Poh Chiang, Vilathgamuwa, D. Mahinda, Teodorescu, Remus; id_orcid, Teodorescu, Remus, Blaabjerg, Frede, Vilathgamuwa, D. M., Gao, Feng, Blaabjerg, Frede; id_orcid, D. Mahinda Vilathgamuwa, Remus Teodorescu, Feng Gao, Poh Chiang Loh, Frede Blaabjerg   +12 more
core   +1 more source

Crop insurance and irrigation behavior: The conditional role of pumping costs

American Journal of Agricultural Economics, EarlyView.
Abstract Excessive water use for irrigation can accelerate the depletion of water resources, undermining agriculture's resilience to weather‐related shocks. Understanding how farmers make water use decisions is essential for developing effective water management policies.
Sungmin Cheu, Molly Sears
wiley   +1 more source