13,925 research outputs found
Long period grating for 3-5 mu m quantum-well infra-red photodetectors
No full textBy considering all possible high order diffracted waves, the authors calculate the coupling efficiency of long period gratings for 3-5 mu m quantum-well infra-red photodetectors (QWIPs) on the basis of the modal expansion model (MEM). A large coupling efficiency for 3-5 mu m QWIPs has been demonstrated. This greatly reduces the difficulties in fabricating 3-5 mu m grating coupled QWIPs and opens the way to fabricate high performance 3-5 mu m and two colour QWIPs image arrays
Transport of airborne Picea schrenkiana pollen on the northern slope of Tianshan Mountains (Xinjiang, China) and its implication for paleoenvironmental reconstruction
No full textThe understanding of airborne pollen transportation is crucial for the reconstruction of the paleoenvironment. Under favorable conditions, a considerable amount of long-distance-transported pollen can be deposited far from its place of origin. In extreme arid regions, in most cases, such situations occur and increase the difficulty to interpret fossil pollen records. In this study, three sets of Cour airborne pollen trap were installed on the northern slope of Tianshan Mountains to collect airborne Picea schrenkiana (spruce) pollen grains from July 2001 to July 2006. The results indicate that Picea pollen disperses extensively and transports widely in the lower atmosphere far away from spruce forest. The airborne Picea pollen dispersal period is mainly concentrated between mid-May and July. In desert area, weekly Picea pollen began to increase and peaked suddenly in concentration. Also, annual pollen indices do not decline even when the distance increased was probably related to the strong wind may pick up the deposited pollen grains from the topsoil into the air stream, leading to an increase of pollen concentration in the air that is irrelevant to the normal and natural course of pollen transport and deposition. This, in turn, may lead to erroneous interpretations of the pollen data in the arid region. This study provided insight into the shift in the Picea pollen season regarding climate change in arid areas. It is recorded that the pollen pollination period starts earlier and the duration became longer. The results also showed that the temperature of May and June was positively correlated with the Picea pollen production. Furthermore, the transport of airborne Picea pollen data is useful for interpreting fossil pollen records from extreme arid regions
Newton hard thresholding pursuit for sparse LCP via a new merit function
No full textSolutions to the linear complementarity problem (LCP) are naturally sparse in many applications such as bimatrix games and portfolio section problems. Despite that it gives rise to the hardness, sparsity makes optimization faster and enables relatively large scale computation. Motivated by this, we take the sparse LCP into consideration, investigating the existence and boundedness of its solution set as well as introducing a new merit function, which allows us to convert the problem into a sparsity constrained optimization. The function turns out to be continuously differentiable and twice continuously differentiable for some chosen parameters. Interestingly, it is also convex if the involved matrix is positive semidefinite. We then explore the relationship between the solution set to the sparse LCP and stationary points of the sparsity constrained optimization. Finally, Newton hard thresholding pursuit is adopted to solve the sparsity constrained model. Numerical experiments demonstrate that the problem can be efficiently solved through the new merit function
Social trauma and the mu-opioid system in depression
No full textThe overarching thesis under investigation is that the endogenous opioid system plays a key role in depression subsequent to traumatic childhood social experiences. This is suggested by the fact that animal work indicates that mu-opioids robustly mediate separation-distress, and that early social stressors lead to long term dysregulation in key related circuitries and neuroanatomical structures
Visiting author Dr. Arthur Schlesinger, Jr. at MU
No full textVisiting author Dr. Arthur Schlesinger, Jr. at MU , b&w. Schlesinger wrote a book on disuniting America.https://mds.marshall.edu/parthenon_photo_morgue/1756/thumbnail.jp
Visiting author Dr. Arthur Schlesinger, Jr. being interviewed at MU
No full textVisiting author Dr. Arthur Schlesinger, Jr. being interviewed at MU , b&w. Schlesinger wrote a book on disuniting America.https://mds.marshall.edu/parthenon_photo_morgue/1757/thumbnail.jp
Czas biednych diabłów. Carla Schmitta krytyka współczesnej mu epoki w drugim dziesięcioleciu XX wieku oraz jego narodziny jako myśliciela politycznego
No full textThe author examines the critique of the epoch, which German philosopher of law and political theoretician Carl Schmitt worked out in the 1920s. Since this topic is present in most of Schmitt’s works from that period, author chose to discuss three, in which this subject isn’t considered on the margins, but on the foreground: a text concerning the poem by Theodor Däubler Nordlicht, Political Romanticism and Age of Neutralizations and Depoliticizations. While the latter is well known in Poland, the first two – a little worse, as well as the whole reflection and biography of Carl Schmitt in that period. The consistency with which Schmitt engaged in the criticism of the times in which he lived, allows us to show how he was born as a political thinker: main ideas of his political theology have their source in the criticism of the era. In addition, the author presents criticism created by Schmitt on the background of that one developed by other thinkers, to point out the differences between this two approaches to the same epoch. The aim of the study is, first, to bring Polish reader closer to the not-so-well-studied period of Schmitt’s reflection and biography (by reaching beyond the above-mentioned works also to the journal of Carl Schmitt, as well as his youthful literary work Schattenrisse, written together with Fritz Eisler), secondly: to present Schmitt as an original thinker of his era
The relationship between co-authorship, currency of references and author self-citations
No full textThis paper attempts to identify the relationship between co-authorship and the currency of the references and author self-citations in the key journals of environmental engineering. The results show that the self-citation rate of co-authored articles is higher than in single-authored articles. A statistically significant correlation is identified between the numbers of co-authors, the rate of author self-citing and the author self-cited; though it was a low correlation. The value of coefficient correlation between the number of co-authors and the author self-citing rate is slightly higher than that between the number of co-authors and the author self-cited rate, which indicates that the number of co-authors hold a stronger correlation with the self-citing rate than the self-cited rate. Meanwhile, self-citing references are found to be more up-to-date than references to others. The range of publication years of self-citing references is smaller than that of references to others, indicating that researchers tend to preferentially cite their own recent works. There is no significant difference in the latest references between self-citing references and the references to others. It might result from electronic journals that provide an easy access to the most current publications.補正完畢國外SSCIY紙本電子版HU
MU grad student Aubrey C. King, Iaeger, W.Va. on his way to India to study
No full textMU grad student Aubrey C. King, Iaeger, W.Va. on his way to India to study, b&w. Attached caption reads: Aubrey C. King, son of Mr & Mrs Ferrel M. King, of Iaeger, WV, is shown at New York Int. airport before leaving on Pan Am for India, where he\u27ll study at the Indian School of International Studies at Delhi. 10/07/63.https://mds.marshall.edu/parthenon_photo_morgue/1224/thumbnail.jp
Phase Diagram at Finite Chemical Potentials in the Nambu-Jona-Lasinio Model
No full textWe study the phase diagram of two flavor dense QCD at finite isospin and baryon chemical potentials in the framework of Nambu-Jona-Lasinio model. The system undergoes a crossover from a Bose-Einstein condensate of charged pions to a BCS superfluid with condensed quark-antiquark Cooper pairs when mu(I) increases at mu(B) = 0, and a nonzero baryon chemical potential serves as a mismatch between the pairing species. We observe a gapless pion condensation phase near the quadruple point (mu(I), mu(B)) = (m(pi), M-N-1.5m(pi)) where m(pi), M-N are the vacuum masses of pions and nucleons, respectively. At very large isospin chemical potential, mu(I) > 6.36m(pi), an inhomogeneous LOFF superfluid phase appears in a window of mu(B). Between the gapless and the LOFF phases, the pion superfluid phase and the normal quark matter phase are connected by a first order phase transition.http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000302957500023&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701Physics, Atomic, Molecular & ChemicalCPCI-S(ISTP)
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