Results 71 to 80 of about 334,510 (171)

A Theory of Errors in Quantum Measurement

, 2003
It is common to model random errors in a classical measurement by the normal (Gaussian) distribution, because of the central limit theorem. In the quantum theory, the analogous hypothesis is that the matrix elements of the error in an observable are ...
Mehta M. L., Porter C. E., Rao C. R., S. G. Rajeev, von Neumann J.   +4 more
core   +1 more source

Non-empirical calculations for minimal energetic reaction pathways of hf molecule addition to acetylene and methylacetylene

Тонкие химические технологии, 2009
Potential energy surfaces of gas-phased synchronous addition of HF to acetylene and methylacetylene. A non-empirical Harthree-Fock-Ruthane method (Gaussian-03, G-31++G** basis) with electronic correlation consideration in MP2 approximation (Moeller ...
Yu. B. Kirillov, N. M. Klimenko
doaj  

The WFIRST Galaxy Survey Exposure Time Calculator [PDF]

, 2012
This document describes the exposure time calculator for the Wide-Field Infrared Survey Telescope (WFIRST) high-latitude survey. The calculator works in both imaging and spectroscopic modes. In addition to the standard ETC functions (e.g.
Gehrels, Neil, Hirata, Christopher M., Kneib, Jean-Paul, Kruk, Jeffrey, Rhodes, Jason, Wang, Yun, Zoubian, Julien   +6 more
core   +2 more sources

Application of Space-Time Diversity/Coding For Power Line Channels [PDF]

, 2002
The purpose of the present work is to evaluate the application of space-time block codes to the transmission of digital data over the power-line communication channel (PLC).
Farrell, Paddy, Giovaneli, Carlos, Honary, Bahram, Yazdani, Javad   +3 more
core  

Employment of artificial intelligence approach for optimizing the solubility of drug in the supercritical CO2 system

Case Studies in Thermal Engineering
This paper investigates the solubility behavior of digitoxin in supercritical carbon dioxide (CO2) through a comprehensive analysis employing ensemble learning techniques and various regression models.
Meixiuli Li, Wenyan Jiang, Shuang Zhao, Kai Huang, Dongxiu Liu   +4 more
doaj   +1 more source

Structural Modeling of Djenkolic Acid with Sulfur Replaced by Selenium and Tellurium

Molecules, 2014
The comparative structural modeling of djenkolic acid and its derivatives containing selenium and tellurium in chalcogen sites (Ch = Se, Te) has provided detailed information about the bond lengths and bond angles, filling the gap in what we know about ...
Petr Melnikov, Valter A. Nascimento, Anderson F. Silva, Lourdes Z. Z. Consolo   +3 more
doaj   +1 more source

Bazı geçiş metal(II) klorür komplekslerin yapısal ve spektroskopik parametrelerinin Gaussian 03 programı ile incelenmesi

, 2020
ÖZETBu çalışma M(II)X2 [M=Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg; X=Cl] molekülleri ve MXn [M=Zn, Cd, Hg; X=Cl, Br; n=3, 4] komplekslerinin en kararlı yapılarını Gassian 03W programı ile MPW1PW91/gen(Cl:6-31g(2df) M:sddall ve sdd) metodu kullanılarak hesaplanmasını içermektedir.
openaire   +1 more source

4-amino-1H-benzo[4,5]imidazo[1,2-a]pirimidin-2-one bileşiğinin koordinasyon modları ve titreşim frekensalarının Gaussian 03 ile incelenmesi = Investigation with gaussian 03 on vibrational frequance and coordination modes of 4-amino-1H-benzo[4,5]imidazo[1,2-alpha]pyrimidin-2-one complex / [PDF]

Kaynakça var.
Kutlu, Nermin, 1979- author 15147, Oturak, Halil, 1970- thesis advisor 12171, Süleyman Demirel Üniversitesi. Fen Bilimleri Enstitüsü. Fizik Anabilim Dalı. issuing body 9075   +2 more
openaire  

A DFT treatments for studying the vibration frequencies and normal coordinates of cyclacene molecules with different diameters (Unit Construction of ZigZag SWCNTs)

Iraqi Journal of Physics, 2012
Semi-empirical methods (MINDO/3, PM3) and Density Functional Theory calculations (DFT/ B3LYP/ 6-311G) were carried out to evaluate the vibration frequencies and Infra-Red (IR) absorption intensities for equilibrium geometries, of 6,7,8,10 and 12 ...
Rehab M. Kubba
doaj  

Gaussian Bayesian network model of healthcare, food and energy sectors in the pandemic: Türkiye case

Heliyon
Healthcare, food, and energy are the basic needs of life in the globalizing world. Humankind's quest to maintain a healthy life and find ways to meet its needs has continued since its existence.
Ersin Sener, Ibrahim Demir
doaj   +1 more source