نتایج جستجو برای: use efficiency

تعداد نتایج: 2058150  

Journal: :CoRR 2017
Manar Mohaisen Saetbyeol Lee

scheme referred to as complex quadrature spatial modulation (CQSM). In contrast to quadrature spatial modulation (QSM), CQSM transmits two complex signal constellation symbols on the real and quadrature spatial dimensions at each channel use, increasing the spectral efficiency. To this end, signal symbols transmitted at any given time instant are drawn from two different modulation sets. The fi...

2011
Christian Rathgeb Andreas Uhl

The intricate structure of the iris constitutes a powerful biometric utilized by iris recognition algorithms to extract discriminative biometric templates. In order to provide a rapid comparison of biometric templates the vast majority of feature extraction methods are designed to generate binary biometric templates, applying the Hamming distance as (dis-)similarity metric. Based on this concep...

2012
Daniela Sint Lorna Raso Michael Traugott

1. Multiplex PCR is a valuable tool in many biological studies but it is a multifaceted procedure that has to be planned and optimised thoroughly to achieve robust and meaningful results. In particular, primer concentrations have to be adjusted to assure an even amplification of all targeted DNA fragments. Until now, total DNA extracts were used for balancing primer efficiencies; however, the a...

Journal: :CoRR 2014
T. Lakshmi Narasimhan Ananthanarayanan Chockalingam

—Index modulation, where information bits are conveyed through antenna indices (spatial modulation) and subcar-rier indices (subcarrier index modulation) in addition to information bits conveyed through conventional modulation symbols, is getting increased research attention. In this paper, we introduce precoder index modulation, where information bits are conveyed through the choice of a preco...

2016
Ekaterina S Smirnova José M Muñoz Molina Alice Johnson Nuno A G Bandeira Carles Bo Antonio M Echavarren

The synthesis of tetranuclear gold complexes, a structurally unprecedented octanuclear complex with a planar [Au(I) 8 ] core, and pentanuclear [Au(I) 4 M(I) ] (M=Cu, Ag) complexes is presented. The linear [Au(I) 4 ] complex undergoes C-H functionalization of carbonyl compounds under mild reaction conditions. In addition, [Au(I) 4 Ag(I) ] catalyzes the carbonylation of primary amines to form ure...

Journal: :energy equipment and systems 0
saeed firouzi department of agronomy, college of agriculture, rasht branch, islamic azad university, rasht, iran amin nikkhah young researchers and elite club, rasht branch, islamic azad university, rasht, iran mehdi khojastehpour department of biosystems engineering, ferdowsi university of mashhad, mashhad, iran nicholas m. holden ucd school of biosystems engineering, agriculture and food science centre, university college dublin, belfield, dublin, 4, ireland

the energy efficiency, greenhouse gas (ghg) emissions, and carbon efficiency of paddy rice production were analysed in sari in the mazandaran province of iran during 2011–2012. data was collected through questionnaires and interviews with paddy producers. the results showed that the net energy gain was 27,932 mj ha-1 and energy efficiency was 1.83 during production. the results of the cobb-doug...

Journal: :Ecohydrology 2021

Both light use efficiency (LUE) and water (WUE) play essential roles in ecosystem production. The extent to which production is affected by the coupling between LUE WUE remains unclear. In this study, we used data from flux measurements weather stations Heihe River Basin, China, along a strong climatic gradient quantify relationship WUE. Variations of explained up 85% variations contribution in...

Journal: :journal of agricultural science and technology 0
m. yildirim department of agricultural structures and irrigation, canakkale onsekiz mart university, faculty of agriculture and design, 17020, canakkale, turkey. k. demirel canakkale onsekiz mart university, faculty of architecture and design, 17020, canakkale, turkey. e. bahar ataturk soil, water and agricultural meteorology research station directorate, 39010 kırklareli, turkey.

this study assessed the optimum water need of pepper (capsicum annuum l. cv. california wonder) and the critical irrigation level to be applied in order to achieve a reasonable economic yield in water shortage conditions. in a controlled field experiment involving five different treatments, seasonal evapotranspiration for pepper fluctuated from 89 mm in the severe stress treatment (i0.00) to 1,...

Journal: :تحقیقات مهندسی کشاورزی 0
علیرضا توکلی عضو هیئت علمی مؤسسه تحقیقات کشاورزی دیم کشور بهمن عبدالرحمنی عضو هیئت علمی مؤسسه تحقیقات کشاورزی دیم کشور

in order to investigate the effects of single irrigation amounts at different stages of rapeseed growth on yield and the improvement of water use efficiency and water productivity indices, this experiment was conducted as split plot arranged in a randomized complete block design (rcbd) with three replications during 2002-2003 for rainfed spring rapeseed variety (pf.7015.91= sarigol) at maragheh...

Journal: :global journal of environmental science and management 0
v. vasileva institute of forage crops-pleven, department technology and ecology of forage crops, 89 general vladimir vazov street. pleven 5800, bulgaria i. pachev institute of viticulture and enology, 1, kala tepe street, pleven, 5800, bulgaria

nitrogen use efficiency and life cycle of root nodules in alfalfa after different mineral fertilization and soil cultivation practices were studied. field trial was conducted in the institute of forage crops, pleven, bulgaria on leached chernozem subsoil type and no irrigation. the next treatments were tested: i) for fertilization as follows: n0p0k0 (control); n60p100k80 (an accepted technology...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید