Bibliographies thématiques / Chiral currents

Littérature scientifique sur le sujet « Chiral currents »

Auteur : Grafiati

Publié le 10 mars 2023

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Articles de revues sur le sujet "Chiral currents"

Riska, D. O., et R. Schiavilla. « Chiral electroweak currents in nuclei ». International Journal of Modern Physics E 26, n^o 01n02 (janvier 2017) : 1740022. http://dx.doi.org/10.1142/s0218301317400225.

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The development of the chiral dynamics based description of nuclear electroweak currents is reviewed. Gerald E. (Gerry) Brown’s role in basing theoretical nuclear physics on chiral Lagrangians is emphasized. Illustrative examples of the successful description of electroweak observables of light nuclei obtained from chiral effective field theory are presented.

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Flachi, Antonino, et Kenji Fukushima. « Astrophysical jets from topological currents ». International Journal of Modern Physics D 26, n^o 12 (octobre 2017) : 1743007. http://dx.doi.org/10.1142/s0218271817430076.

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In the presence of rotation, gravity induces, even at zero temperature, a chiral vortical current. This current is interpreted as emerging from the gravitational Chern–Simons current. We argue that this gravitational Chern–Simons chiral vortical current may provide a novel universal microscopic mechanism behind the generation of collimated jets from rotating astrophysical compact sources.

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Rho, Mannque. « Exchange currents from chiral Lagrangians ». Physical Review Letters 66, n^o 10 (11 mars 1991) : 1275–78. http://dx.doi.org/10.1103/physrevlett.66.1275.

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Cohen, Thomas D., et Xiangdong Ji. « Chiral multiplets of hadron currents ». Physical Review D 55, n^o 11 (1 juin 1997) : 6870–76. http://dx.doi.org/10.1103/physrevd.55.6870.

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Truhlík, E. « Chiral electromagnetic meson exchange currents ». Czechoslovak Journal of Physics 43, n^o 3-4 (mars 1993) : 467–94. http://dx.doi.org/10.1007/bf01589857.

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Cirilo-Lombardo, D. J., et V. D. Gershun. « Integrable hydrodynamic equations for initial chiral currents and infinite hydrodynamic chains from WZNW model and string model of WZNW type with SU(2), SO(3), SP(2), SU(∞), SO(∞), SP(∞) constant torsions ». International Journal of Modern Physics A 29, n^o 24 (29 septembre 2014) : 1450134. http://dx.doi.org/10.1142/s0217751x14501346.

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The WZNW and string models are considered in terms of the initial and invariant chiral currents assuming that the internal and external torsions coincide (anticoincide) and they are the structure constants of the SU(n), SO(n), SP(n) Lie algebras. These models are the auxiliary problems in order to construct integrable equations of hydrodynamic type. It was shown that the WZNW and string models in terms of invariant chiral currents are integrable for the constant torsion associated with the structure constants of the SU(2), SO(3), SP(2) and SU(3) algebras only. The equation of motion for the density of the first Casimir operator was obtained in the form of the inviscid Burgers equation. The solution of this equation is presented through the Lambert function. Also, a new equation of motion for the initial chiral current was found. The integrable infinite hydrodynamic chains obtained from the WZNW and string models are given in terms of invariant chiral currents with the SU(2), SO(3), SP(2) and with SU(∞), SO(∞), SP(∞) constant torsions. Also, the equations of motion for the density of any Casimir operator and new infinite-dimensional equations of hydrodynamic type for the initial chiral currents through the symmetric structure constant of SU(∞), SO(∞), SP(∞) algebras are obtained.

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Zubkov, Mikhail, Zakhar Khaidukov et Ruslan Abramchuk. « Momentum Space Topology and Non-Dissipative Currents † ». Universe 4, n^o 12 (12 décembre 2018) : 146. http://dx.doi.org/10.3390/universe4120146.

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Relativistic heavy ion collisions represent an arena for the probe of various anomalous transport effects. Those effects, in turn, reveal the correspondence between the solid state physics and the high energy physics, which share the common formalism of quantum field theory. It may be shown that for the wide range of field–theoretic models, the response of various nondissipative currents to the external gauge fields is determined by the momentum space topological invariants. Thus, the anomalous transport appears to be related to the investigation of momentum space topology—the approach developed earlier mainly in the condensed matter theory. Within this methodology we analyse systematically the anomalous transport phenomena, which include, in particular, the anomalous quantum Hall effect, the chiral separation effect, the chiral magnetic effect, the chiral vortical effect and the rotational Hall effect.

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MOHRI, KENJI. « N=2 SUPER-W-ALGEBRA IN THE HALF-TWISTED LANDAU-GINZBURG MODEL ». International Journal of Modern Physics A 09, n^o 29 (20 novembre 1994) : 5097–120. http://dx.doi.org/10.1142/s0217751x94002065.

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We investigate N=2 extended superconformal symmetry, using the half-twisted Landau-Ginzburg models. The first example is the D2n+2 type minimal model. It has been conjectured that this model has a spin n super-W-current. We check this by direct computations of the BRST cohomology class up to n=4. We observe that for n≤3 the super-W-currents generate the ring isomorphic to the chiral ring of the model with respect to the classical product. We thus conjecture that this isomorphism holds for any n. The next example is the CPn coset model. In this case we find a sort of Miura transformation which gives a simple formula for the super-W-currents of spin {1, 2, …, n} in terms of the chiral superfields. Explicit forms of the super-W-currents and their Poisson brackets are obtained for the CP2 and CP3 cases. We also conjecture that as far as the classical product is concerned, these super-W-currents generate the ring isomorphic to the chiral ring of the model, and this is checked for CP2 coset model.

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Rebhan, Anton, Andreas Schmitt et Stefan Stricker. « Holographic Chiral Currents in a Magnetic Field ». Progress of Theoretical Physics Supplement 186 (1 octobre 2010) : 463–70. http://dx.doi.org/10.1143/ptps.186.463.

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Kadavý, Tomáš. « OPE of Green Functions of Chiral Currents ». Nuclear and Particle Physics Proceedings 309-311 (janvier 2020) : 115–18. http://dx.doi.org/10.1016/j.nuclphysbps.2019.11.020.

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Thèses sur le sujet "Chiral currents"

Atala, Marcos. « Measuring topological invariants and chiral Meissner currents with ultracold bosonic atoms ». Diss., Ludwig-Maximilians-Universität München, 2014. http://nbn-resolving.de/urn:nbn:de:bvb:19-177350.

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Topologische Invarianten sind von zentraler Bedeutung für die Interpretation vieler Phänomene kondensierter Materie. In dieser Arbeit wird die erste Messung einer solchen Invarianten vorgestellt. Dazu wird ein neu entwickeltes Messprotokoll mit ultrakalten bosonischen Atomen in einem eindimensionalen optischen Gitter verwendet. Außerdem wird die Messung chiraler Meissner-Ströme in einer Leitergeometrie in einem künstlichen Magnetfeld sowie die Präparation sogenannter "Resonating Valence Bond"-Zustände (RVB) in vier Gitterplätze umfassenden Plaketten präsentiert. Das Hauptmerkmal des experimentellen Aufbaus ist ein Paar orthogonaler Übergitter-Potentiale, die es ermöglichen eine Vielzahl verschiedener Systeme zu simulieren. Die Modulation des Übergitters mit einem weiteren Paar interferierender Strahlen ermöglicht zu dem die Realisierung eines künstlichen Magnetfelds. Die Zak-Phase ist eine Invariante, welche die topologischen Eigenschaften eines Energiebandes charakterisiert. Sie ist definiert als die Berry-Phase eines Teilchens bei adiabatischem Durchlaufen eines Pfades im Quasiimpulsraum durch die Brillouinzone. Ein einfaches Beispiel für ein System mit zwei verschiedenen topologischen Klassen ist eine eindimensionale Kette mit alternierender Tunnelkopplungsstärke. Im Experiment können diese Klassen durch Messung der Differenz zwischen ihren Zak-Phasen $\Deta\Phi_\text{Zak}\approx\pi$ unter Verwendung von Bloch-Oszillationen und Ramsey-Interferometrie in Übergittern unterschieden werden. Der zweite Teil dieser Arbeit befasst sich mit der Messung chiraler Meissner-Ströme von Bosonen in einer Leitergeometrie mit magnetischem Fluss, welche eines der einfachsten Modelle zur Beobachtung von Orbitaleffekten ist. Obwohl die Atome ladungsneutral sind und daher keine Lorentzkraft auf sie wirkt, kann durch eine externe Modulation im Übergitter ein künstliches Magnetfeld erzeugt werden. Die dadurch hervorgerufenen Wahrscheinlichkeitsströme auf beiden Seiten der Leiter wurden separat mit einer Projektionsmethode gemessen. Beim Ändern der Tunnelkopplung entlang der Leitersprossen wurde, in Analogie zu einem Typ-II Supraleiter, ein Übergang zwischen einer Meissner-artigen Phase mit gesättigtem maximalen chiralen Strom und einer Vortex-Phase mit abnehmendem Strom beobachtet. Dieses System mit ultrakalten Atomen kann auch als Analogon zur Spin-Bahn-Kopplung betrachtet werden. RVB-Zustände gelten als fundamental für das Verständnis von Hochtemperatursupraleitern. Der dritte Teil der Arbeit widmet sich mit der Realisierung eines Minimalbeispiels solcher Zustände auf einer Plakette bei halber Füllung. In diesem System wurden die zwei RVB-Zustände mit s- und d-Wellen-Symmetrie sowie Superpositionen der beiden Zustände präpariert. Die in dieser Arbeit vorgestellten Experimente stellen einen neuen Ansatz dar, die topologischen Eigenschaften von Bloch-Bändern in optischen Gittern zu untersuchen; sie öffnen die Türen zur Erforschung von wechselwirkenden Teilchen in niedrigdimensionalen Systemen in einem homogenen Magnetfeld sowie der Eigenschaften des Grundzustandes des Heisenberg-Modells.
The determination of topological invariants is of fundamental importance to interpret many condensed-matter phenomena. This thesis reports on the implementation of a newly developed protocol to measure these invariants for the first time, using ultracold bosonic atoms in one-dimensional optical lattices. In addition, it deals with the measurement of chiral Meissner currents in a ladder-like lattice geometry exposed to an artificial magnetic field, and presents results on the preparation of Resonating Valence Bond (RVB) states on plaquettes. The key feature of the experimental setup is a pair of orthogonal superlattice potentials that permit a rich variety of systems to be simulated, and that when combined with a pair of interfering beams which periodically modulate the lattice allow the realization of artificial magnetic fields. The Zak phase is an invariant that characterizes the topological properties of an energy band, and is defined as the Berry phase that a particle acquires as it adiabatically moves in the quasimomentum space across the Brillouin zone. A dimerized lattice -- a one-dimensional chain with alternating couplings -- is a simple example of a system that possesses two different topological classes. Using a combination of Bloch oscillations and Ramsey interferometry in superlattices we measured the difference of the Zak phase $\approx\pi$ for the two possible polyacetylene phases, which directly indicates that they belong to different topological classes. The second part of this thesis deals with the measurement of chiral Meissner currents in bosonic ladders with magnetic flux, one of the simplest models to observe orbital effects. Although charge neutrality prevents atoms from experiencing the Lorentz force when they are exposed to a magnetic field, employing lattice modulation techniques we implemented an artificial magnetic field on a ladder created with optical lattices. By using a projection technique, we were able to measure the probability currents on each side of the ladder. When changing the coupling strengths along the rungs of the ladder, we found, in analogy to type-II superconductors, a transition between a Meissner-like phase with saturated maximum chiral current and a vortex phase with decreasing currents. Additionally, the flux ladder realizes spin-orbit coupling with ultracold atoms. It is believed that RVB states are fundamental for the understanding of high-T$_c$ superconductivity. The third part of this work describes our measurements on the preparation of minimum instances of RVB states with bosonic atoms in isolated four-site plaquettes at half filling. These small systems possess two RVB states with $s$- and $d$-wave symmetry. Using atom manipulation techniques we prepared these two states, as well as a quantum resonance between them. The experiments in this thesis establish a new general approach for probing the topological structure of Bloch bands in optical lattices. Moreover, they open up the pathway to exploring interacting particles in low dimensions exposed to uniform magnetic fields and to studying ground state properties of the Heisenberg Hamiltonian.

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Sauerwein, Ulrich [Verfasser], Matthias [Akademischer Betreuer] Lutz et Rob [Akademischer Betreuer] Timmermans. « Axial-Vector Currents and Chiral Symmetry / Ulrich Sauerwein ; Matthias Lutz, Rob Timmermans ». Darmstadt : Universitäts- und Landesbibliothek, 2021. http://d-nb.info/123414994X/34.

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An, Di. « Exploring the quark correlator of an axial-vector with two vector currents ». Thesis, Uppsala universitet, Kärnfysik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-430310.

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Atala, Marcos [Verfasser], et Immanuel [Akademischer Betreuer] Bloch. « Measuring topological invariants and chiral Meissner currents with ultracold bosonic atoms / Marcos Atala. Betreuer : Immanuel Bloch ». München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2014. http://d-nb.info/1065610068/34.

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Seutin, Rodric [Verfasser], Achim [Akademischer Betreuer] Schwenk et Kai [Akademischer Betreuer] Hebeler. « Electromagnetic Properties of Light Nuclei with Chiral Effective Field Theory Currents / Rodric Seutin ; Achim Schwenk, Kai Hebeler ». Darmstadt : Universitäts- und Landesbibliothek, 2021. http://d-nb.info/1228537402/34.

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Grudzien, Lukasz Andrzej. « Enantioseparation using a counter-current bioreactor ». Thesis, Brunel University, 2011. http://bura.brunel.ac.uk/handle/2438/6496.

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The potential of countercurrent chromatography (CCC) as a small footprint bioreactor/separator for manufacture of enantiopure chiral molecules was explored, using as a model reaction the isolation of L-amino butyric acid (L-ABA) from a DL-ABA racemate and the enantioselectivity of D-amino acid oxidase (DAAO). Bioconversion of D-ABA to ketobutyric acid (KBA) by DAAO, immobilised by selective partitioning in the stationary phase of the CCC centrifuge, was accompanied by separation of unreacted L-ABA from KBA by the countercurrent action of the centrifuge. For effective bioreactor/separator action, a high partition of the biocatalyst to the stationary phase was required in order to retain the biocatalyst in the coil, with differing partitions of substrates and products between the stationary phase (SP) and mobile phase (MP) so that these could be separated. Aqueous two-phase systems (ATPS) were the major two-phase systems used to provide SP and MP, as these are well reported to be effective in preserving enzyme activity. The distribution ratios of DL-ABA, KBA and DAAO were measured in a range of phases with polyethylene glycols (PEGs) of different molecular weights, different salts, and different compositions of PEG and salt, using an automated robotic method, developed for the purpose. A system of 14% w/w PEG 1000/ 14% w/w potassium phosphate, pH 7.6, gave the best combination of distributions ratios (CPEG phase/Csalt phase = CSP/CMP) for ABA, KBA and biocatalyst (DAAO) of 0.6, 2.4 and 19.6 respectively. A limited number of aqueous-organic and ionic liquid two-phase systems were also reviewed, but found unsatisfactory. CCC operating conditions such as substrate concentration, biocatalyst concentration, the mobile phase flow rate (residence time in the CCC coil), temperature, rotational speed and operational modes (single flow and multiple-dual flow) and types of mixing (cascade and wave-like) were optimised to produce total conversion of D-ABA to KBA, which was then completely separated from unreacted, enantiomerically pure (>99% ee), LABA. Advantages of the CCC bioreactor over conventional technology include reduced equipment footprint, cheaper running costs, and faster purifications. However, in its current format the drawbacks, such as enzyme instability and excessive optimisation time, reduce its commercial appeal. Additional investigations into the use of whole cell preparations of biocatalyst in the CCC bioreactor showed potential to overcome the problem of enzyme instability and this may in the future give the CCC bioreactor a place in the enantioseparation field.

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Krause, Andreas. « Baryon matrix elements of the vector current in chiral perturbation theory / ». Bern, 1991. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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Towers, S. J. « A measurement of the neutral current chiral couplings in neutrino and antineutrino proton interactions ». Thesis, University of Oxford, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.355817.

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Everschor, Karin [Verfasser], Achim [Akademischer Betreuer] Rosch, Matthias [Akademischer Betreuer] Vojta et Stefan [Akademischer Betreuer] Blügel. « Current-Induced Dynamics of Chiral Magnetic Structures : Skyrmions, Emergent Electrodynamics and Spin-Transfer Torques / Karin Everschor. Gutachter : Achim Rosch ; Matthias Vojta ; Stefan Blügel ». Köln : Universitäts- und Stadtbibliothek Köln, 2012. http://d-nb.info/103826605X/34.

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Guan, Yicheng [Verfasser], Stuart S. P. [Gutachter] Parkin, Georg [Gutachter] Woltersdorf et Günter [Gutachter] Reiss. « Increased efficiency of current-induced chiral domain wall motion by interface engineering / Yicheng Guan ; Gutachter : Stuart S. P. Parkin, Georg Woltersdorf, Günter Reiss ». Halle (Saale) : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2021. http://d-nb.info/1237685753/34.

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Livres sur le sujet "Chiral currents"

Poh, Angela. Sanctions with Chinese Characteristics. NL Amsterdam : Amsterdam University Press, 2020. http://dx.doi.org/10.5117/9789463722353.

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The view that China has become increasingly assertive under President Xi Jinping is now a common trope in academic and media discourse. However, until the end of Xi Jinping’s first term in March 2018, China had been relatively restrained in its use of coercive economic measures. This is puzzling given the conventional belief among scholars and practitioners that sanctions are a middle ground between diplomatic and military/paramilitary action. Using a wide range of methods and data — including in-depth interviews with 76 current and former politicians, policy-makers, diplomats, and commercial actors across 12 countries and 16 cities — Sanctions with Chinese Characteristics: Rhetoric and Restraint in China’s Diplomacy examines the ways in which China had employed economic sanctions to further its political objectives, and the factors explaining China’s behaviour. This book provides a systematic investigation into the ways in which Chinese decisionmakers approached sanctions both at the United Nations Security Council and unilaterally, and shows how China’s longstanding sanctions rhetoric has had a constraining effect on its behaviour, resulting in its inability to employ sanctions in complete alignment with its immediate interests.

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Valjakka, Minna, et Meiqin Wang, dir. Visual Arts, Representations and Interventions in Contemporary China. NL Amsterdam : Amsterdam University Press, 2018. http://dx.doi.org/10.5117/9789462982239.

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This edited volume provides a multifaceted investigation of the dynamic interrelations between visual arts and urbanization in contemporary Mainland China with a focus on unseen representations and urban interventions brought about by the transformations of the urban space and the various problems associated with it. Through a wide range of illuminating case studies, the authors demonstrate how innovative artistic and creative practices initiated by various stakeholders not only raise critical awareness on socio-political issues of Chinese urbanization but also actively reshape the urban living spaces. The formation of new collaborations, agencies, aesthetics and cultural production sites facilitate diverse forms of cultural activism as they challenge the dominant ways of interpreting social changes and encourage civic participation in the production of alternative meanings in and of the city. Their significance lies in their potential to question current values and power structures as well as to foster new subjectivities for disparate individuals and social groups.

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Kang, Jin-A. The Guangdong Model and Taxation in China. Nieuwe Prinsengracht 89 1018 VR Amsterdam Nederland : Amsterdam University Press, 2022. http://dx.doi.org/10.5117/9789463729833.

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This book explores the formation, development, and characteristics of modern China's finance, focusing especially on Guangdong province as a case study to illustrate both the macro-level trends and the micro-level reality. The chronological range of this book is mainly from the late Qing period to the early Republican Era ending in 1937, when the full-scale Second Sino-Japanese War broke out. After the concept of modern finance was introduced to China for the first time in the late Qing period, the efforts to build modern finance continued in the Republican Era both nationally and locally. But this process was interrupted by the outbreak of the war against Japan in 1937 and, having been derailed, did not subsequently recover due to the subsequent civil war between the Kuomintang and the Chinese Communist Party. This interrupted process of financial modernization was resumed with Reform and Opening-up, launched in 1978. Therefore, in order to illustrate the structural transformation and persistent characteristics of China’s fiscal system, this book also includes discussions of the early Qing period and current Chinese finance.

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Zhukov, S., dir. The Current Energy Crisis : Economic, Technological and Environmental Risks. Primakov National Research Institute of World Economy and International Relations, Russian Academy of Sciences (IMEMO), 23, Profsoyuznaya Str., Moscow, 117997, Russian Federation, 2022. http://dx.doi.org/10.20542/978-5-9535-0608-3.

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The compendium of works presented at the international conference of young scholars, organized by the Center of Energy Studies, IMEMO RAS and Faculty of International Energy Business of Gubkin Russian State University (NRU) of Oil and Gas, covers problems of transformation of national energy systems in China, France, Iceland, Singapore, Uzbekistan and Vietnam. Problems of nuclear and hydrogen energy development and decarbonization of fuel-energy complex are analyzed.

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Kante, Justīne. Latvia and China : Entering the Post-Optimism Period. Rīga Stradiņš University, 2022. http://dx.doi.org/10.25143/china-in-the-baltic-states_2022_isbn_9789934618154_32-54.

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TIn order to demonstrate the changes in behaviour and the current policy goals from Latvia’s perspective, this chapter of the book "China in the Baltic States – from a Cause of Hope to Anxiety" covers the historic relations between Latvia and China, followed by an overview of economic cooperation, and an insight of how the relations have been perceived recently from the Annual Reports of the Minister of Foreign Affairs of the Republic of Latvia and Annual Reports on the Activities of Latvian State Security Service, additionally explaining survey data reviewed in recent years on the Latvian perception of China.

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Norah, Gallagher, et Shan Wenhua. Chinese Investment Treaties. Oxford University Press, 2009. http://dx.doi.org/10.1093/law:iic/9780199230259.001.1.

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China's success in attracting foreign direct investment (FDI) in the last decade is undisputed and unprecedented. It is currently the second largest FDI recipient in the world, a success partially due to China's efforts to enter into bilateral investment treaties (BITs) and other international investment instruments. This book is a comprehensive commentary on Chinese BITs. Chinese investment treaties have typically provided international forums for settling investment disputes such as the International Centre for the Settlement of Investment Disputes (ICSID). Given the continuous growth of FDI in China, the emergence of state-investor disagreements in China, and the dramatic rise of investment treaty based arbitrations world wide in recent years, it is anticipated that there will be an increasing number of investment arbitrations involving the central and local governments of China. This book reviews and analyzes China's approach to foreign investment. It considers the current role of investment treaties in China's foreign economic policy, analyzes and interprets the key provisions of the BITs, and discusses the future agenda of China's investment program. It looks at how this investment regime interconnects with the domestic system and considers the implications for a foreign investor in China.

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Ruizhuang, Zhang. Despite the “New Assertiveness,” China Is Not Up for Challenging the Global Order. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190675387.003.0012.

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History shows that the rise and fall of great powers are conducive to conflict and war, while realist international theories try to prove there is an irresistible logic to this historical lesson. If China has indeed risen to a full-fledged great power, the rest of the world does have reason to worry about its intentions and strategy toward the current global order. But does that premise hold up? Despite China’s phenomenal economic growth and the widespread “second place” bubble, China’s economy is not as strong as it appears. The chapter argues that China still has a long way to go to catch up to the current superpower, the United States, but its growth is more unsustainable than analysts tend to assume. China has neither the capability nor the intention to destabilize the current world order, and this defines China as not a revisionist but rather as a status quo state.

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Layne, Christopher. The Sound of Distant Thunder. Oxford University Press, 2017. http://dx.doi.org/10.1093/oso/9780190675387.003.0007.

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The chapter compares the pre-1914 Anglo-German antagonism with the current Sino-American relationship to address two issues. First, does the rise of new great powers lead to war? Second, are rising great powers prone to challenge the existing international order into which they emerge—that is, are rising great powers “revisionists”? China’s rapid ascent has pushed these two questions to the top of the agendas of both international relations scholars and policy makers alike. This chapter shows that the United States and China are on a collision course. Like Britain and Germany before World War I, the United States and China seem fated, at best, to engage in an intense security competition; at worst, war between them is a real possibility. One reason the Sino-American rivalry is intensifying is because a rising China inevitably will seek to revise the current international order that the United States established after World War II.

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Bolsover, Gillian. China. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780190931407.003.0010.

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Computational propaganda is a growing concern in Western democracies, with evidence of online opinion manipulation orchestrated by robots, fake accounts, and misinformation in many recent political events. China, the country with the most sophisticated regime of Internet censorship and control in the world, presents an interesting and under-studied example of how computational propaganda is used. This chapter summarizes the landscape of current knowledge in relation to public opinion manipulation in China. It addressees the questions of whether and how computational propaganda is being used in and about China, whose interests are furthered by this computational propaganda; and what is the effect of this computational propaganda on the landscape of online information in and about China. It also addresses the issue of how the case of computational propaganda in China can inform the current efforts of Western democracies to tackle fake news, online bots, and computational propaganda. This chapter presents four case studies of computational propaganda in and about China: the Great Firewall and the Golden Shield project; positive propaganda on Twitter aimed at foreign audiences; the anti–Chinese state bots on Twitter; and domestic public opinion manipulation on Weibo. Surprisingly, I find that there is little evidence of automation on Weibo and little evidence of automation associated with state interests on Twitter. However, I find that issues associated with anti-state perspectives, such as the pro-democracy movement, contain a large amount of automation, dominating Chinese-language information in certain hashtags associated with China and Chinese politics on Twitter.

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Jacob, Jabin T. China’s Evolving Strategy in the Indian Ocean Region. Oxford University Press, 2018. http://dx.doi.org/10.1093/oso/9780199479337.003.0013.

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Jabin T. Jacob, an Indian analyst on China, provides a more skeptical view on the MSR and the risks China faces in that initiative. Jacob argues that the challenge of the MSR initiative for China is not just the obvious strategic benefits, but also the consequences of the potential failure of the strategy. This might happen due to China’s current economic slowdown which would affect China’s neighbours too. The potential failure of Xi Jinping’s grand foreign policy project also has consequences for his own credibility at home and for the Communist Party of China. If the cash runs out and the going gets tough, might China resort to tested methods of focusing on military assistance, not only in Pakistan, but in other South Asian countries, with potential adverse consequences for India?

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Chapitres de livres sur le sujet "Chiral currents"

Mickelsson, Jouko. « The Chiral Anomaly ». Dans Current Algebras and Groups, 105–26. New York, NY : Springer US, 1989. http://dx.doi.org/10.1007/978-1-4757-0295-8_5.

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Bull, Steven D., Stephen G. Davies, David J. Fox, A. Christopher Garner et Thomas G. R. Sellers. « Chiral Relay Auxiliaries ». Dans Current Trends in Organic Synthesis, 1–6. Boston, MA : Springer US, 1999. http://dx.doi.org/10.1007/978-1-4615-4801-0_1.

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Stibor, Ivan, et Petra Zlatušková. « Chiral Recognition of Anions ». Dans Topics in Current Chemistry, 31–63. Berlin, Heidelberg : Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/b101161.

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Amabilino, David B., et Jaume Veciana. « Supramolecular Chiral Functional Materials ». Dans Topics in Current Chemistry, 253–302. Berlin, Heidelberg : Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/128_034.

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Scarso, Alessandro, et Julius Jr. Rebek. « Chiral Spaces in Supramolecular Assemblies ». Dans Topics in Current Chemistry, 1–46. Berlin, Heidelberg : Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/128_038.

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Zumino, Bruno. « Chiral Anomalies and Differential Geometry ». Dans Current Algebra and Anomalies, 361–92. Princeton : Princeton University Press, 1986. http://dx.doi.org/10.1515/9781400854561.361.

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Kim, Kimoon, Mainak Banerjee, Minyoung Yoon et Sunirban Das. « Chiral Metal-Organic Porous Materials : Synthetic Strategies and Applications in Chiral Separation and Catalysis ». Dans Topics in Current Chemistry, 115–53. Berlin, Heidelberg : Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/128_2009_7.

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Kampen, Daniela, Corinna M. Reisinger et Benjamin List. « Chiral Brønsted Acids for Asymmetric Organocatalysis ». Dans Topics in Current Chemistry, 395–456. Berlin, Heidelberg : Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/128_2009_1.

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Kampen, Daniela, Corinna M. Reisinger et Benjamin List. « Chiral Brønsted Acids for Asymmetric Organocatalysis ». Dans Topics in Current Chemistry, 1–37. Berlin, Heidelberg : Springer Berlin Heidelberg, 2009. http://dx.doi.org/10.1007/978-3-642-02815-1_1.

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Maeda, Katsuhiro, et Eiji Yashima. « Helical Polyacetylenes Induced via Noncovalent Chiral Interactions and Their Applications as Chiral Materials ». Dans Topics in Current Chemistry Collections, 1–31. Cham : Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-78042-9_1.

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Actes de conférences sur le sujet "Chiral currents"

Koelling, Stefan. « Electromagnetic currents from chiral EFT ». Dans 6th International Workshop on Chiral Dynamics. Trieste, Italy : Sissa Medialab, 2010. http://dx.doi.org/10.22323/1.086.0108.

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Kogan, Anton, et Reuven Shavit. « Induced currents on omega & ; chiral particles ». Dans 2014 IEEE 28th Convention of Electrical & Electronics Engineers in Israel (IEEEI). IEEE, 2014. http://dx.doi.org/10.1109/eeei.2014.7005815.

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Kadavy, Tomas. « Green Functions of Chiral Currents within OPE ». Dans 40th International Conference on High Energy physics. Trieste, Italy : Sissa Medialab, 2021. http://dx.doi.org/10.22323/1.390.0471.

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Menéndez, Javier, Osvaldo Civitarese, Ivan Stekl et Jouni Suhonen. « Chiral Two-body Currents and Neutrinoless Double Beta Decay ». Dans WORKSHOP ON CALCULATION OF DOUBLE-BETA-DECAY MATRIX ELEMENTS (MEDEX '11). AIP, 2011. http://dx.doi.org/10.1063/1.3671041.

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Sharpe, Stephen R., Sinya Aoki et Oliver Baer. « Vector and axial currents in Wilson chiral perturbation theory ». Dans The XXVII International Symposium on Lattice Field Theory. Trieste, Italy : Sissa Medialab, 2010. http://dx.doi.org/10.22323/1.091.0084.

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Koelling, Stefan. « Chiral effective field theory for EM currents and form factors ». Dans The 7th International Workshop on Chiral Dynamics. Trieste, Italy : Sissa Medialab, 2013. http://dx.doi.org/10.22323/1.172.0096.

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Kovalev, Alexey. « Torque, spin and energy currents in chiral magnets (Conference Presentation) ». Dans Spintronics IX, sous la direction de Henri-Jean Drouhin, Jean-Eric Wegrowe et Manijeh Razeghi. SPIE, 2016. http://dx.doi.org/10.1117/12.2230977.

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Liu, Y., H. Wang et D. Cline. « Simulation of a weak interaction induced chiral transition in a pre-biotic medium ». Dans Discovery of weak neutral currents : the weak interaction before and after. AIP, 1994. http://dx.doi.org/10.1063/1.45443.

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Pastore, Saori. « Quantum Monte Carlo calculations of electromagnetic moments and transitions in A<=10 nuclei with two-body chiEFT currents ». Dans The 8th International Workshop on Chiral Dynamics. Trieste, Italy : Sissa Medialab, 2016. http://dx.doi.org/10.22323/1.253.0115.

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Bhattacharyya, A. K., G. J. Burke et E. K. Miller. « Wavenumbers for currents on infinite- and finite-length wires in a chiral medium ». Dans IEEE Antennas and Propagation Society International Symposium 1992 Digest. IEEE, 1992. http://dx.doi.org/10.1109/aps.1992.221470.

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Rapports d'organisations sur le sujet "Chiral currents"

Baroni, Alessandro. Nuclear chiral axial currents and applications to few-nucleon systems. Office of Scientific and Technical Information (OSTI), août 2017. http://dx.doi.org/10.2172/1409027.

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Feldstein, Martin. The Role of Currency Realignments in Eliminating the US and China Current Account Imbalances. Cambridge, MA : National Bureau of Economic Research, janvier 2011. http://dx.doi.org/10.3386/w16674.

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Lee, G. K., et I. T. Lau. Current coal-fired boiler technology in China. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1985. http://dx.doi.org/10.4095/302597.

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Shi, Jianhuai. Are Currency Appreciations Contractionary in China ? Cambridge, MA : National Bureau of Economic Research, octobre 2006. http://dx.doi.org/10.3386/w12551.

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Khan, Saif M. U.S. Semiconductor Exports to China : Current Policies and Trends. Center for Security and Emerging Technology, octobre 2020. http://dx.doi.org/10.51593/20200039.

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The United States has long used export controls to prevent the proliferation of advanced semiconductors and the inputs necessary to produce them. With Beijing building up its own chipmaking industry, the United States has begun tightening restrictions on exports of semiconductor manufacturing equipment to China. This brief provides an overview of U.S. semiconductor export control policies and analyzes the impacts of those policies on U.S.-China trade.

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Hsueh, Ya. The Dynamics of the South China Sea Warm Current (SCSWC). Fort Belvoir, VA : Defense Technical Information Center, septembre 2002. http://dx.doi.org/10.21236/ada626444.

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Caruso, Michael J., et Robert C. Beardsley. Satellite Observations of Surface Fronts, Currents and Winds in the Northeast South China Sea. Fort Belvoir, VA : Defense Technical Information Center, août 2002. http://dx.doi.org/10.21236/ada626453.

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Binsheng Li et C. J. Johnson. China`s current anti-inflation measures in nurturing an electricity supply crisis. Office of Scientific and Technical Information (OSTI), juin 1995. http://dx.doi.org/10.2172/594526.

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Zhou, Nan, Masaru Nishida et Weijun Gao. Current Status and Future Scenarios of Residential Building Energy Consumption in China. Office of Scientific and Technical Information (OSTI), décembre 2008. http://dx.doi.org/10.2172/971856.

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Bhadtti, N., C. A. Biang, L. A. Poch et M. M. Tompkins. Environmental problems in the People`s Republic of China : Current magnitude and possible control options. Office of Scientific and Technical Information (OSTI), septembre 1995. http://dx.doi.org/10.2172/195781.

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