4,499 research outputs found
Lowest electronic states of neutral and ionic LiN
No full textWe have investigated the potential energy curves (PECs) of the LiN heteronuclear diatomic molecule, including its ionic species LiN+ and LiN−, using explicitly correlated multi-reference configuration interaction (MRCI-F12) calculations in conjunction with the correlation consistent quintuple- basis set. The effect of core–valence correlation, scalar relativistic effects, and the size of the basis sets has been investigated. A comprehensive set of spectroscopic constants determined based on the above-mentioned calculations are also reported for the lowest electronic states and all systems, including dissociation energies, harmonic and anharmonic vibrational frequencies, and rotational constants. Additional parameters, such as the dipole moments, equilibrium spin-orbit constants, excitation energies, and rovibrational energy levels, are also documented. We found that the three triplet states of LiN, namely, X 3∑−, A 3Π, and 2 3∑−, exhibit substantial potential wells in the PEC diagrams, while the quintet states are repulsive in nature. The ground state of the anion also shows a deep potential well in the vicinity of its equilibrium geometry. In contrast, the ground and excited states of the cation are very loosely bound. Charge transfer properties of each of these states are also analyzed to obtain an in-depth understanding of the interatomic interactions. We found that the core–valence correlation has a substantial effect on the calculated spectroscopic constants.Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Atmospheric Remote Sensin
Vascular endothelial growth factor restores delayed tumor progression in tumors depleted of macrophages
No full textGenetic depletion of macrophages in Polyoma Middle T oncoprotein (PyMT)-induced mammary tumors in mice delayed the angiogenic switch and the progression to malignancy. To determine whether vascular endothelial growth factor A (VEGF-A) produced by tumor-associated macrophages regulated the onset of the angiogenic switch, a genetic approach was used to restore expression of VEGF-A into tumors at the benign stages. This stimulated formation of a high-density vessel network and in macrophage-depleted mice, was followed by accelerated tumor progression. The expression of VEGF-A led to a massive infiltration into the tumor of leukocytes that were mostly macrophages. This study suggests that macrophage-produced VEGF regulates malignant progression through stimulating tumor angiogenesis, leukocytic infiltration and tumor cell invasion
Photovoltaic sample-and-hold circuit enabling MPPT indoors for low-power systems
No full textPhotovoltaic (PV) energy harvesting is commonly used to power autonomous devices, and maximum power point tracking (MPPT) is often used to optimize its efficiency. This paper describes an ultra low-power MPPT circuit with a novel sample-and-hold and cold-start arrangement, enabling MPPT across the range of light intensities found indoors, which has not been reported before. The circuit has been validated in practice and found to cold-start and operate from 100 lux (typical of dim indoor lighting) up to 5000 lux with a 55cm2 amorphous silicon PV module. It is more efficient than non-MPPT circuits, which are the state-of-the-art for indoor PV systems. The proposed circuit maximizes the active time of the PV module by carrying out samples only once per minute. The MPPT control arrangement draws a quiescent current draw of only 8µA, and does not require an additional light sensor as has been required by previously-reported low-power MPPT circuits
In reply to: 'towards precision regional anesthesia: is the PENG block appropriate for all hip fracture surgeries?'
No full textLetter to the EditorD-Yin Lin, Craig Morrison, Brigid Brown, Alex Saies, Reshma Pawar, Marthinus Vermeulen, Stewart Robert Anderson, Tsai Sheng Lee, Job Doornberg, Hidde Kroon, Ruurd Jaarsm
In reply to: A letter to the recent publication: Pericapsular nerve group (PENG) block provides improved short-term analgesia compared with the femoral nerve block in hip fracture surgery: a single-center double-blinded randomized comparative trial
No full textD-Yin Lin, Brigid Brown, Craig Morrison, Alex Saies, Reshma Pawar, Marthinus Vermeulen, Stewart Robert Anderson, Tsai Sheng Lee, Job Doornberg, Hidde Kroon, Ruurd Jaarsm
A multiscale approach for optimal control problems of linear parabolic equations
No full textAuthor name used in this publication: Lin, Yanping2012-2013 > Academic research: refereed > Publication in refereed journalVersion of RecordPublishedVoR allowe
Stigmergy-Based Modeling to Discover Urban Activity Patterns from Positioning Data
No full textPositioning data offer a remarkable source of information to analyze crowds urban dynamics. However, discovering urban activity patterns from the emergent behavior of crowds involves complex system modeling. An alternative approach is to adopt computational techniques belonging to the emergent paradigm, which enables self-organization of data and allows adaptive analysis. Specifically, our approach is based on stigmergy. By using stigmergy each sample position is associated with a digital pheromone deposit, which progressively evaporates and aggregates with other deposits according to their spatiotemporal proximity. Based on this principle, we exploit positioning data to identify highdensity areas (hotspots) and characterize their activity over time. This characterization allows the comparison of dynamics occurring in different days, providing a similarity measure exploitable by clustering techniques. Thus, we cluster days according to their activity behavior, discovering unexpected urban activity patterns. As a case study, we analyze taxi traces in New York City during 2015
Author Co-Citation Analysis (ACA): a powerful tool for representing implicit knowledge of scholar knowledge workers
No full textIn the last decade, knowledge has emerged as one of the most important and valuable organizational assets. Gradually this importance caused to emergence of new discipline entitled ―knowledge management‖. However one of the major challenges of knowledge management is conversion implicit or tacit knowledge to explicit knowledge. Thus Making knowledge visible so that it can be better accessed, discussed, valued or generally managed is a long-standing objective in knowledge management. Accordingly in this paper author co- citation analysis (ACA) will be proposed as an efficient technique of knowledge visualization in academia (Scholar knowledge workers)
Y(4143) is probably a molecular partner of Y(3930)
No full textAfter discussing the various possible interpretations of the Y(4143) signal observed by the CDF collaboration in the J/Sigma phi mode, we tend to conclude that Y(4143) is probably a D(s)(*)D(s)(*) molecular state with J(PC)=0(++) or 2(++) while Y(3930) is its D(*)D(*) molecular partner as predicted in our previous work [X. Liu, Z. G. Luo, Y. R. Liu, and Shi-Lin Zhu, Eur. Phys. J. C 61, 411 (2009)]. Both the hidden-charm and open-charm two-body decays occur through the rescattering of the vector components within the molecular states while the three- and four-body open-charm decay modes are forbidden kinematically. Hence, their widths are narrow naturally. CDF, BABAR and Belle collaborations may have discovered heavy molecular states already. We urge experimentalists to measure their quantum numbers and explore their radiative decay modes in the future.Astronomy & AstrophysicsPhysics, Particles & FieldsSCI(E)50ARTICLE1null8
La Influencia literaria y impacto cultural de las traducciones de Lin Shu (1852-1924) en la China de finales del siglo XIX y principios del XX
No full textConsultable des del TDXTítol obtingut de la portada digitalitzadaLa tesis intenta enfatizar la importancia de la traducción en la historia de la literatura centrandose en el caso de un traductor chino, Lin Shu (1852-1924), a través del cual se plantea la tesis de este trabajo. Entre las teorías se destaca el grupo de Translation Studies, que se relaciona con otros enfoques como los Polisistemas, la Escuela de la Manipulación y las aportaciones de la teoría de la literatura y la literatura comparada. Y también la teoría de la recepción, la deconstrucción y el concepto de la Muerte del autor, de Roland Barthes. La tesis está dividida en tres partes principales independientes, pero, a la vez, interrelacionadas. La primera parte es el marco histórico. En ella, se trata el trasfondo político y el uso la traducción como medio de acceso a la modernidad. En concreto se analiza la influencia de la traducción de la novela que tradicionalmente había sido menospreciada en la letras chinas. En este contexto, se destaca el éxito de la traducción de Lin Shu La dama de las camelias, que abrió un nuevo horizonte para este género. La segunda parte se centra en la figura de Lin Shu y las características de sus traducciones. A pesar de su desconocimiento de las lenguas extranjeras, Lin Shu produjo un elevado número de obras con la ayuda de sus narradores. La gran sensibilidad literaria de Lin Shu le permitió ganarse el elogio de la crítica. El acto de traducir obliga a Lin Shu a romper con la lengua tradicional de la literatura china, el wenyan, y adoptar un estilo menos rígido. Con ello favorece la transición del wenyan al baihua, la lengua coloquial del pueblo. Esta lengua será utilizada después por la Nueva literatura, muy influida por la literatura extranjera. En las traducciones de Lin Shu se integra la literatura extranjera a la literatura china, introduciendo en esta última nuevas perspectivas. En la tercera parte se llega a la conclusión y se plantean nuevas reflexiones. A partir de los tres elementos principales que articulan esta tesis, la figura de Lin Shu, el papel de la traducción en la China a finales del siglo XIX y principios del XX y el género de la novela, se llega a la idea de los sistemas interrelacionados. El sistema literario, junto con otros sistemas, se inscriben en el sistema social y se influyen mutuamente. La traducción se asimila a otras actividades de manipulación, puesto que, sirve de instrumento para la difusión de unos determinados valores. La tesis tiene los siguientes objetivos: la traducción puede servir para introducir conceptos y estrategias nuevas para la construcción de la identidad nacional y puede desempeñar un papel esencial en el ámbito sociopolítico; la traducción puede estimular el desarrollo de las literaturas nacionales, incluso puede llegar a cambiar las corrientes literarias de la cultura receptora; la traducción tiene una presencia importante en la formación y la evolución de la literatura y, a la vez, de las lenguas nacionales; por último, la traducción puede servir como herramienta para la configuración de un nuevo canon literario y una nueva literatura universal.This dissertation attempts to emphasise the importance of translation in the history of literature. It focuses on the specific case of the Chinese translator Lin Shu (1852-1924); he is used to illustrate the thesis of this work. Among translation theories, this dissertation concentrates on those of the Translation Studies, and other related perspectives such as the Polysystems and the Manipulation School, as well as the contributions of the theory of literature and comparative literature. Of equal note is the theory of Reader- response, deconstruction, and Roland Barthes' concept of the Death of the Author. The thesis is divided into three main independent and, at the same time, interrelated parts. The first part concentrates on the historical context, where we consider the political background, and the use of translation as a way of attaining modernity. More specifically, we analyse the influence of the translation of novels, which were traditionally ignored in Chinese literature. In this context, we stress the success of Lin Shu's translation of La Dame aux Camélias (Alexandre Dumas fils) which opened new horizons for this genre. The second part of the thesis focuses on the personality of Lin Shu and the characteristics of his translations. Despite his lack of knowledge of foreign languages, Lin Shu produced an important number of works with the help of his narrators. His great literary sensibility earned him critics' praise. Translating forced Lin Shu to break with the traditional language of Chinese literature, wenyan, and to adopt a less rigid style. This fostered the transition from wenyan to baihua, the colloquial language of the people. This language was later to be used by the New Literature, which was very influenced by foreign literature. Lin Shu's translations incorporate foreign literature into Chinese literature, introducing new perspectives in the latter. The third part leads to the conclusion and raises new considerations. From the three main criteria of this thesis, that is, the personality of Lin Shu, the role of translation in China at the end of the 19th and beginning of the 20th centuries, and the novel as a literary genre, we reach the idea of interrelated systems. The literary system, as many other systems, is placed inside the social system, therefore they both influence each other. Translation is similar to other manipulation processes, since it can be employed to spread specific values. This thesis has the following objectives: translation can be used to introduce new concepts and strategies to help build national identity, and at the same time play an important role in the socio-political context; translation can stimulate the development of national literatures, and can even change literary trends in the native literature; translation holds an important function in the development and evolution of literature and national languages. Finally, translation can be used as a tool to shape a new literary canon and a new universal literature
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