Results 41 to 50 of about 1,087 (201)

Nickel Catalyzed Carbonylative Cross Coupling for Direct Access to Isotopically Labeled Alkyl Aryl Ketones

open access: yesAngewandte Chemie, Volume 136, Issue 51, December 16, 2024.
The development of an effective nickel‐catalyzed carbonylative cross coupling of redox‐activated alkyl carboxylic acids and aryl boronic acids is presented. A wide variety of alkyl aryl ketones is obtained in good yields, and the chemistry is easily applicable to stable and radiocarbon isotope labeling.
Kim S. Mühlfenzl   +9 more
wiley   +2 more sources

APPLICATION OF THE TABLECTIVE PROCESSOR WHILE SOLVING THE OPTIMIZATION PROBLEMS [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2017
The article discusses methods for solving optimization problems with the use of table processor tools — «Solution search»and «Script manager». Solutions of several examples of linear and integer optimization are presented.
Kudrinskaya O. V.
doaj   +1 more source

FOR THE UPCOMING 300th ANNIVERSARY OF RUSSIAN GRAVIMETRY

open access: yesВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле, 2020
In early May 1728 Louis de l'Isle de la Croyère, the extraordinary academician of the Academy of Sciences and Arts in St. Petersburg, carried out in Arkhangelsk one of the first in the world and the first in the Russian Empire measurement of gravity.
Блох Ю.И.
doaj   +1 more source

STUDY POINTS OF REST HEREDITARITY DYNAMIC SYSTEMS VAN DER POL-DUFFING

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2019
Using numerical modeling, oscillograms and phase trajectories were constructed to study the limit cycles of a van der Pol Duffing nonlinear oscillatory system with a power memory. The simulation results showed that in the absence of a power memory (α = 2,
Е. R. Novikova, R. I. Parovik
doaj   +1 more source

PROGRAM GENERATOR PROCESSES INDUCED BY NONLINEAR DYNAMIC SYSTEM WITH IMPULS NOISES [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2017
The article considers nonlinear dynamic systems with impulse perturbation. The described method of generation of impulse random processes on a computer. On the example of the Lorenz system are considered a software module.
Kazakov E. A.
doaj   +1 more source

Occidental transept in Romanesque cathedral of Saints Vitus, Wenceslaus and Adalbert at the Prague Castle [PDF]

open access: yes, 2023
The Romanesque Cathedral of Saints Vitus, Wenceslaus and Adalbert in Prague was erected as a double-chancel basilica with western transept. Occidental transverse nave and two choirs together form an intrinsic and distinctive feature of this basilica that
Oles, Kamila
core   +1 more source

Анализ параметров выборки данных Global CMT Catalog для построения статистической модели сейсмического процесса на примере зоны субдукции Курило-Камчатской островной дуги

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2012
Определяются критерии связности сейсмических событий по пространственному, временному, энергетическому масштабам. Обсуждается вопрос о критерии, учитывающем направленность сейсмического процесса.
Popova, A.V.   +2 more
doaj   +1 more source

DEVELOPMENT OF A MATHEMATICAL MODEL OF AUTOMATIC KNOWLEDGE EXTRACTION FOR A HYBRID QUESTION-ANSWER SYSTEM [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2017
The paper proposes and implements, in the form of a mathematical model and software package, the concept of using value coefficients, for ranging answers in universal hybrid question-answer systems, which will improve the efficiency of their work.
Valchuk A. S.
doaj   +1 more source

Navigating Contested Spaces: Gendered Interactions in Everyday Entrepreneuring Among Jua Kali Women in Rural Kenya

open access: yesGender, Work &Organization, EarlyView.
ABSTRACT This paper examines the daily experiences of Jua Kali women entrepreneurs in Western Kenya, unpacking how gendered power relations are enacted within informal marketplaces and how women entrepreneurs mobilize agency within these structurally and institutionally constrained contexts.
Tabitha Sindani   +3 more
wiley   +1 more source

HARDWARE AND SOFTWARE COMPLEX OF AUGMENTATION COMMUNICATION SYSTEM ON THE BASIS OF EYETRACKING TECHNOLOGYS [PDF]

open access: yesVestnik KRAUNC: Fiziko-Matematičeskie Nauki, 2019
The paper presents a description of the developed APC and implemented the algorithm of EyeTracking (based on convolutional neural networks and morphological analysis), which allows people suffering from motor dysfunction and neuroparalytic syndromes to ...
Yu. V. Grushko
doaj   +1 more source

Home - About - Disclaimer - Privacy