Results 11 to 20 of about 45,965,697 (271)

Comunidad Andina de Naciones, una apuesta por la innovación y la diversificación comercial en Ecuador

open access: yesComillas Journal of International Relations, 2023
En un mundo cada vez más conectado, comercial y virtualmente, los países están apostando por la integración regional como un mecanismo para promover y fortalecer su oferta exportable.
Carmen Amelia Coral Guerrero   +2 more
doaj   +1 more source

CRISIS OF SOUTH AMERICAN REGIONALISM: DISCUSSIONS ON INTEGRATION, FRAGMENTATION AND DISINTEGRATION

open access: yesRevista Tempo do Mundo, 2020
Regionalism has been considered one of the most relevant phenomena in international relations since the mid-twentieth century despite having gone through increasing questions and possible crises in the first decades of the 21st century.
Patrícia Nasser de Carvalho   +1 more
doaj   +1 more source

The Elemental Profile of Beer Available on Polish Market: Analysis of the Potential Impact of Type of Packaging Material and Risk Assessment of Consumption

open access: yesMolecules, 2022
Twenty-five elements, including the most essential and toxic metals, were determined in fifty beer samples stored in cans and bottles by Inductively Coupled Plasma Mass Spectrometry (ICP-MS), Inductively Coupled Plasma Optical Emission Spectroscopy (ICP ...
Magdalena Gajek   +4 more
doaj   +1 more source

Termites can learn

open access: yesBehavioural Processes, 2023
Abstract It is generally believed that termites can’t learn and are not “intelligent”. This study aimed to test whether termites could have any form of memory. A Y-shaped test device with one release chamber and two identical test chambers was designed and constructed by 3D printing.
Yifan Evan Ding, Zhenghui Li
openaire   +2 more sources

A calculus for Esterel: if can, can. if no can, no can. [PDF]

open access: yesProceedings of the ACM on Programming Languages, 2019
The language Esterel has found success in many safety-critical applications, such as fly-by-wire systems and nuclear power plant control software. Its imperative style is natural to programmers building such systems and its precise semantics makes it work well for reasoning about programs. Existing semantics of Esterel generally fall into two
Spencer P. Florence   +3 more
openaire   +1 more source

Integral and measure-turnpike properties for infinite-dimensional optimal control systems [PDF]

open access: yes, 2017
We first derive a general integral-turnpike property around a set for infinite-dimensional non-autonomous optimal control problems with any possible terminal state constraints, under some appropriate assumptions.
Trelat, Emmanuel, Zhang, Can
core   +3 more sources

Selective iodination and bromination of allyl aryl ether with iodine or bromine in the presence of ceric ammonium nitrate(硝酸铈铵催化下的烯丙基芳醚选择性碘代和溴代反应)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2013
以硝酸铈铵I2/CAN为反应体系时,当苯环上有给电子基团,碘和硝酸根对烯丙基双键的加成及苯环单碘代产物,收率较好;当苯环连有吸电子基团时,碘和硝酸根对烯丙基双键加成,产率较低.以Br2/CAN为反应体系时,当苯环上连有给电子基团时,溴对烯丙基碳碳双键加成,苯环上发生了一溴代或二溴代,产率中等;当苯环上连有吸电子基团时,溴对烯丙基碳碳双键加成,产率较高.
HEZhi-cheng(何志成)   +1 more
doaj   +1 more source

Computer Network Attacks and Modern International Law

open access: yesVestnik MGIMO-Universiteta, 2014
Computer network attacks (CNA) is a no doubt actual theoretical and practical topic today. Espionage, public and private computer-systems disruptions committed by states have been a real life.
A. L. Kozik
doaj   +1 more source

Men Can/Can Men Change?

open access: yesCulture Unbound, 2021
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Gabriella Nilsson, David Gunnarsson
openaire   +3 more sources

The impact of gender on English learning approaches for outgoing learners: Unveiling intriguing insights

open access: yesCogent Arts & Humanities, 2023
The primary objective of this research was to examine how gender influences self-perceived extroverted learners in their choice and application of language acquisition strategies.
Le Thanh Thao   +6 more
doaj   +1 more source

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