Results 51 to 60 of about 5,474,071 (364)
Schild's Null Strings in Flat and Curved Backgrounds [PDF]
, 1995 Schild's null (tensionless) strings are discussed in certain flat and curved backgrounds. We find closed, stationary, null strings as natural configurations existing on the horizons of spacetimes which possess such null hypersurfaces.
A. A. Zheltukhin +22 more
core +3 more sources
BMC Psychiatry, 2018 BackgroundDespite its popularity as an inferential framework, classical null hypothesis significance testing (NHST) has several restrictions. Bayesian analysis can be used to complement NHST, however, this approach has been underutilized largely due to a
D. Quintana, Donald R. Williams
semanticscholar +1 more source
Assessment of Behavior Factor for Steel Plate Shear Wall with Reinforced Concrete Moment Surrounded Frame [PDF]
Journal of Structural and Construction Engineering, 2019 The steel shear wall is an appropriate resistant system against lateral loads that is been utilized in modern high-rise buildings and upgrading existing buildings because of numerous benefits.
Madjid Gholhaki +2 more
doaj +1 more source
Maximum Principles for Null Hypersurfaces and Null Splitting Theorems
, 1999 A maximum principle for C^0 null hypersurfaces is obtained and used to derive a splitting theorem for spacetimes which contain null lines. As a consequence of this null splitting theorem, it is proved that an asymptotically simple vacuum (Ricci flat ...
Galloway, Gregory J.
core +1 more source
The appearance, motion, and disappearance of three-dimensional magnetic null points [PDF]
, 2015 N.A.M. acknowledges support from NASA grants NNX11AB61G, NNX12AB25G, and NNX15AF43G; NASA contract NNM07AB07C; and NSF SHINE grants AGS-1156076 and AGS-1358342 to SAO. C.E.P.
Andrew L. Haynes +6 more
core +2 more sources
A general proof of the quantum null energy condition [PDF]
Journal of High Energy Physics, 2017 We prove a conjectured lower bound on 〈T__(x)〉ψ in any state ψ of a CFT on Minkowski space, dubbed the Quantum Null Energy Condition (QNEC). The bound is given by the second order shape deformation, in the null direction, of the geometric entanglement ...
S. Balakrishnan +3 more
semanticscholar +1 more source
تأثیر امواج فراصوت بر جوانه‌زنی، فعالیت آنزیم‌های آلفا‌آمیلاز و آنتی‌اکسیدان، قند‌ها و کلروفیل در سرخارگل [PDF]
Pizhūhish/hā-yi tulīd-i giyāhī, 2019 سابقه و هدف: جوانه‌زنی سریع، یکنواخت و کامل بذر‌ها باعث سبز شدن مطلوب و رشد اولیه‌ی سریع گیاه می‌شود. رشد اولیه‌ی مطلوب سبب دریافت بیشتر تشعشع خورشیدی و افزایش عملکرد می‌گردد. جوانه‌زنی بذور سرخارگل کم و نامنظم می‌باشد.
سیده فاطمه رسولی +3 more
doaj +1 more source
, 2008 We study the effect of the ferromagnetic (FM) contacts on the spin accumulation in the lateral spin valve system for the collinear magnetization configurations.
Kim, Tae-Suk +3 more
core +1 more source
Null Killing vectors and geometry of null strings in Einstein spaces [PDF]
, 2013 Einstein complex spacetimes admitting null Killing or null homothetic Killing vectors are studied. These vectors define totally null and geodesic 2-surfaces called the null strings or twistor surfaces.
Chudecki, Adam
core +2 more sources
A guide to null models for animal social network analysis
Methods in Ecology and Evolution, 2017 Null models are an important component of the social network analysis toolbox. However, their use in hypothesis testing is still not widespread. Furthermore, several different approaches for constructing null models exist, each with their relative ...
D. Farine
semanticscholar +1 more source