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关键词： Graded Iwanaga-Gorenstein algebras   Cohen-Macaulay modules  

摘要： We discuss finitely graded Iwanaga-Gorenstein (IG) algebras A and representation theory of their (graded) CohenMacaulay (CM) modules. By quasi-Veronese algebra construction, in principle, we may reduce our study to the case where A is a trivial extension algebra A = Lambda circle plus C with the grading deg Lambda = 0, deg C = 1. In [I :] we gave a necessary and sufficient condition that A is IG in terms of Lambda and C by using derived tensor products and derived Homs. For simplicity, we assume that Lambda is of finite global dimension in the sequel. In this paper, we show that the condition that A is IG, has a triangulated categorical interpretation. We prove that if A is IG, then the graded stable category CMZ A of CM-modules is realized as an admissible subcategory of the derived category D-b(mod Lambda).As a corollary, we deduce that the Grothendieck group K-0(CMZ A) is free of finite rank. We give several applications. Among other things, for a path algebra Lambda = kQ of an A(2) or A(3) quiver Q, we give a complete list of Lambda-Lambda-bimodule C such that Lambda circle plus C is IG (resp. of finite global dimension) by using the triangulated categorical interpretation mentioned above. (C) 2020 Published by Elsevier Inc.

关键词： Academic mobility   academic work   category boundary work   migration   professionalism   Thailand  

摘要： This article explores the process of constituting 'professionalism' as a discursive category amongst migrant academics working in Thailand. We animate the conceptual resource of 'category boundary work' to examine the inclusionary and exclusionary practices by which 'un/professionalism' is produced in the talk of 25aa-jaan dtaang chaator migrant academics working in Thailand. Throughout our data, the discourse of professionalism was constructed in opposition to three key storylines which constituted the 'unprofessional migrant academic' as morally questionable;underqualified;and uncommitted. We argue that the constitution of unprofessionalism matters, producing tangible effects for higher education institutions and academic workers alike.

关键词： Abundance   continuous-time capture-recapture   missing covariate   maximum likelihood estimation  

摘要： In continuous-time capture-recapture experiments, individual heterogeneity has a large effect on the capture probability. To account for the heterogeneity, we consider an individual covariate, which is categorical and subject to missing. In this article, we develop a general model to summarize three kinds of missing mechanisms, and propose a maximum likelihood estimator of the abundance. A likelihood ratio confidence interval of the abundance is also proposed. We illustrate the proposed methods by simulation studies and a real data example of a bird species prinia subflava in Hong Kong.

关键词： deep learning   fMRI   LSTM   visual cortex   visual perceptual decoding  

摘要： Visual perceptual decoding is one of the important and challenging topics in cognitive neuroscience. Building a mapping model between visual response signals and visual contents is the key point of decoding. Most previous studies used peak response signals to decode object categories. However, brain activities measured by functional magnetic resonance imaging are a dynamic process with time dependence, so peak signals cannot fully represent the whole process, which may affect the performance of decoding. Here, we propose a decoding model based on long short-term memory (LSTM) network to decode five object categories from multitime response signals evoked by natural images. Experimental results show that the average decoding accuracy using the multitime (2-6 s) response signals is 0.540 from the five subjects, which is significantly higher than that using the peak ones (6 s;accuracy: 0.492;p< .05). In addition, from the perspective of different durations, methods and visual areas, the decoding performances of the five object categories are deeply and comprehensively explored. The analysis of different durations and decoding methods reveals that the LSTM-based decoding model with sequence simulation ability can fit the time dependence of the multitime visual response signals to achieve higher decoding performance. The comparative analysis of different visual areas demonstrates that the higher visual cortex (VC) contains more semantic category information needed for visual perceptual decoding than lower VC.

关键词： Monoids   Idempotents   Units   Lattices   Categories   Functors   Invariants  

摘要： For a monoid M, we denote by G(M) the group of units, E(M) the submonoid generated by the idempotents, and G(L)(M) and G(R)(M) the submonoids consisting of all left or right units. Writing M for the (monoidal) category of monoids, G, E, G(L) and G(R) are all (monoidal) functors M -> M. There are other natural functors associated to submonoids generated by combinations of idempotents and one- or two-sided units. The above functors generate a monoid with composition as its operation. We show that this monoid has size 15, and describe its algebraic structure. We also show how to associate certain lattice invariants to a monoid, and classify the lattices that arise in this fashion. A number of examples are discussed throughout, some of which are essential for the proofs of the main theoretical results. (C) 2020 Elsevier Inc. All rights reserved.

关键词： Outdoor thermal comfort   Physiological equivalent temperature   Predicted percentage of dissatisfied   Thermal comfort range   TOCI  

摘要： This study presents an analysis of the thermo-hygrometric conditions in the city of Konya (Turkey). A one-year transversal field surveywas carried out in the Selcuk University campus and 2295 valid questionnaireswere collected. In each questionnaire, randomly selected interviewees provided personal information and judged their perception and thermal preference according to the ASHRAE 7-point and McIntyre scales, respectively. For each interviewee, a value of the Physiological Equivalent Temperature (PET) was calculated based on the values of operational variables obtained from the questionnaires and the environmental variablesmeasured during the survey. This allowed to calculate the seasonal preferred and neutral PETs and the annual PET comfort range. Also, the scale of the PET thermal perception was determined for the Konya population and, more generally, for the inhabitants of the BSk Koppen-Geiger climate zone. Statistical analyzes carried out in terms of Variance Inflationary Factor, multicollinearity assessment and Best Subsets Analysis led to the identification of the Turkish Outdoor Comfort Index, an empirical index able to predict the average value of the thermal perception of a large group of individuals living in the aforementioned climate zone. Moreover, the equations of the Predicted Percentage of Dissatisfied (PPD) were obtained for each season. (c) 2020 Elsevier B.V. All rights reserved.

关键词： Fukaya category   Homological mirror symmetry   Grassmannian  

摘要： We show that the monotone Lagrangian torus fiber of the Gelfand-Cetlin integrable system on the complex Grassmannian Gr(k, n) supports generators for all maximum modulus summands in the spectral decomposition of the Fukaya category over C, generalizing the example of the Clifford torus in projective space. We introduce an action of the dihedral group D-n on the Landau-Ginzburg mirror proposed by Marsh-Rietsch [27] that makes it equivariant and use it to show that, given a lower modulus, the torus supports nonzero objects in none or many summands of the Fukaya category with that modulus. The alternative is controlled by the vanishing of rectangular Schur polynomials at the n-th roots of unity, and for n = p prime this suffices to give a complete set of generators and prove homological mirror symmetry for Gr(k, p). (C) 2020 Elsevier Inc. All rights reserved.

关键词： MSM   transgender   categories   HIV   Vietnam  

摘要： In Vietnam, HIV continues disproportionately to affect men who have sex with men and transgender women, and the increase in HIV prevalence in these populations may be related to a lack of tailoring of current prevention approaches, which often fail to address social diversity within these populations. To effectively respond to HIV in Vietnam, it is imperative to identify sub-populations within the broad category of 'men who have sex with men' (MSM), a term which in Vietnam as in many other sites frequently subsumes transgender women. In this paper, we document the different categories used to describe people who engage in same-sex sexual practices and/or non-normative gender performances drawing on data collected via in-depth interviews and focus groups with a total of 79 participants in Hanoi. We identified over 40 different categories used to describe men who have sex with men and/or transgender women. These categories could be described as behaviourally-based, identity-based, or emic, and each carried different meanings, uses (based on age and geography) and levels of stigma. The categories shine light on the complexity of identities among men who have sex with men and transgender women and have utility for future research and programming to more comprehensively address HIV in Vietnam.

关键词： 宋代   文论   “神”范畴  

摘要： 文论中的“神”范畴是文学作品的核心与灵魂。玩味宋代的文学作品,“神”范畴的创作理念一以贯之。从文学作品中的“神”范畴,到文艺美学中的“神”范畴,再到文学批评中的“神”范畴,是宋代文论“神”范畴的三级构架。文论诠释向度下的文学作品的“神”范畴与人的情感相通,是理性的审美感悟;文学批评视域下的“神”范畴是检视文学作品最有效的模式。借助文论中的“神”范畴蠡测宋代的文学作品,可以探明宋代文论的存在状态和发展规律。