101,192 research outputs found
Letter, [Author unclear] to Paulina T. Merritt
No full textHandwritten letter to Paulina Merritt from an unknown author, October 1, 1876.
Historische Apriori. Zur Methodologie Helmuth Plessners und Michel Foucaults
No full textFritz-Hoffmann C, Lüdtke N. Historische Apriori. Zur Methodologie Helmuth Plessners und Michel Foucaults. In: Ebke T, Schloßberger M, eds. Dezentrierungen: Zur Konfrontation von Philosophischer Anthropologie, Strukturalismus und Poststrukturalismus. Internationales Jahrbuch für philosophische Anthropologie. Vol 3, 2011/2012. Berlin: Akademie Verlag; 2012: 91-112
Efficient Algorithms for Approximating Quantum Partition Functions at Low Temperature
No full textWe establish an efficient approximation algorithm for the partition functions of a class of quantum spin systems at low temperature, which can be viewed as stable quantum perturbations of classical spin systems. Our algorithm is based on combining the contour representation of quantum spin systems of this type due to Borgs, Kotecký, and Ueltschi with the algorithmic framework developed by Helmuth, Perkins, and Regts, and Borgs et al
Cacao (Theobroma cacao L. ) agroforestry in Colombia: current practices and challenges ahead
No full textThe cacao tree ( L.) is one of the most important tropical crops. As an agroforestry system, it provides long-term land use that supports local economies and provides valuable seeds for the global chocolate industry. As a driver of rural development, cacao is planted as an alternative to illicit coca crops in Colombia. In addition, it is expected that cacao agroforestry will increase its production area during the implementation of the Havana Peace Accords.
Given the low yields (0.6 t/ha), high susceptibility to diseases, and the fact that cacao production systems are mainly managed by smallholders (3 ha). Improved agronomic management and better cacao varieties adapted to agroforestry production are needed to fully exploit the high potential of cacao land use as a driver of rural development in Colombia.
This presentation addresses practices and research needs to improve cacao production. Such as breeding, propagation techniques, agroforestry management, enhancement of natural pollination and post-harvest practices as key elements for sustainable cocoa production. In addition, the presentation will show how other cacao producing countries (examples from Latin America and Africa) have developed technical solutions in these critical areas to improve cocoa sustainability
Cacao (Theobroma cacao L. ) agroforestry in Colombia: current practices and challenges ahead
No full textThe cacao tree ( L.) is one of the most important tropical crops. As an agroforestry system, it provides long-term land use that supports local economies and provides valuable seeds for the global chocolate industry. As a driver of rural development, cacao is planted as an alternative to illicit coca crops in Colombia. In addition, it is expected that cacao agroforestry will increase its production area during the implementation of the Havana Peace Accords.
Given the low yields (0.6 t/ha), high susceptibility to diseases, and the fact that cacao production systems are mainly managed by smallholders (3 ha). Improved agronomic management and better cacao varieties adapted to agroforestry production are needed to fully exploit the high potential of cacao land use as a driver of rural development in Colombia.
This presentation addresses practices and research needs to improve cacao production. Such as breeding, propagation techniques, agroforestry management, enhancement of natural pollination and post-harvest practices as key elements for sustainable cocoa production. In addition, the presentation will show how other cacao producing countries (examples from Latin America and Africa) have developed technical solutions in these critical areas to improve cocoa sustainability
Efficient Algorithms for Approximating Quantum Partition Functions
No full textWe establish a polynomial-time approximation algorithm for partition functions of quantum spin models at high temperature. Our algorithm is based on the quantum cluster expansion of Neto\v{c}n\`y and Redig and the cluster expansion approach to designing algorithms due to Helmuth, Perkins, and Regts. Similar results have previously been obtained by related methods, and our main contribution is a simple and slightly sharper analysis for the case of pairwise interactions on bounded-degree graphs
Handwritten biographical information on Paulina T. McClung Merritt
No full textA handwritten biography of Paulina T. McClung Merritt by an unknown author, 1892.
Heterogeneous and tissue-specific regulation of effector T cell responses by IFN-gamma during Plasmodium berghei ANKA infection.
No full textIFN-γ and T cells are both required for the development of experimental cerebral malaria during Plasmodium berghei ANKA infection. Surprisingly, however, the role of IFN-γ in shaping the effector CD4(+) and CD8(+) T cell response during this infection has not been examined in detail. To address this, we have compared the effector T cell responses in wild-type and IFN-γ(-/-) mice during P. berghei ANKA infection. The expansion of splenic CD4(+) and CD8(+) T cells during P. berghei ANKA infection was unaffected by the absence of IFN-γ, but the contraction phase of the T cell response was significantly attenuated. Splenic T cell activation and effector function were essentially normal in IFN-γ(-/-) mice; however, the migration to, and accumulation of, effector CD4(+) and CD8(+) T cells in the lung, liver, and brain was altered in IFN-γ(-/-) mice. Interestingly, activation and accumulation of T cells in various nonlymphoid organs was differently affected by lack of IFN-γ, suggesting that IFN-γ influences T cell effector function to varying levels in different anatomical locations. Importantly, control of splenic T cell numbers during P. berghei ANKA infection depended on active IFN-γ-dependent environmental signals--leading to T cell apoptosis--rather than upon intrinsic alterations in T cell programming. To our knowledge, this is the first study to fully investigate the role of IFN-γ in modulating T cell function during P. berghei ANKA infection and reveals that IFN-γ is required for efficient contraction of the pool of activated T cells
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Pelevin’s Trinity in the novel “t”: author – protagonist – reader
No full textThe article attempts to interpret Pelevin's artistic strategy in the novel "T" by exploring its subject organization and addressing the key problems of the author, the protagonist, and the reader as they are seen by the researcher. The article analyzes the peculiarities of constructing the narrative reality in the novel "T", and goes on to discuss Pelevin's philosophic models of the development of the humankind, and the emergence of his new anthropology
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