学科服务 更多>>

关键词： Remote sensing  

摘要： As research advances, our conceptual understanding also changes. Computational approaches do little to recognize the evolution that occurs at the conceptual level during the research process. This can result in misunderstanding between knowledge producers and consumers and so inhibit the reusability of outcomes. In this article, we describe how changes at the conceptual level can be represented, along with related changes to data and methods, and how appropriate connections between these various artefacts can be maintained. To demonstrate these ideas, we show how categories used in remote sensing and land cover analysis change over time and how these changes are linked to various research activities. We present a new system (called AdvoCate) that augments typical GIS and remote sensing functionality with a conceptual model of categories that can undergo change, and that also captures the cause of conceptual change and its extent. We argue that concepts and categories should be represented explicitly and richly within GIS, because without this, we have a poor idea of what our modeled entities really mean, and by implication how they should be used appropriately. We demonstrate the usefulness of this deeper representation using examples of category evolution from a land cover mapping exercise.

关键词： EEG   Face identity   Face perception   Personally familiar face   Own-face   Person knowledge  

摘要： Previous studies have focused on the modulatory effects of face familiarity on different components of an event-related potential (ERP), but there is controversy in the literature regarding the precise component that reflects the process of identity recognition. This may be partly explained by limits to this waveform analysis approach, as waveforms elicited by the presentation of a face are likely to reflect a variety of different cognitive processes that overlap in time. Using fast periodic visual stimulation and EEG (FPVS-EEG), we directly measured the electrophysiological response reflecting identity-specific recognition after isolating it from responses attributable to low-level visual processing and face-selective processes that are not identity-specific. The observed response therefore provides a robust and objective measure of the recognition of a personally familiar face generated bilaterally in the occipito-temporal region. We tested the magnitude of this identity-specific response to three categories of familiarity: the own-face (high familiarity), a friend's face (moderate familiarity), and a stranger's face (no familiarity). We found the largest response to the participant's own-face, followed by an intermediate response to a highly personally familiar face, and the smallest response to an unfamiliar face. An additional response was observed over the posterior cortical midline for familiar faces only, consistent with theories that familiar identity recognition also triggers post-perceptual semantic processing.

关键词： Inverse problem   Categorical inversion   Traveling pilot points   Multiple-point statistics   Null Space Monte Carlo   Linear sub-space methods  

摘要： Categorical parameter distributions are common-place in hydrogeological systems consisting of geologic facies/categories with distinct properties, e.g., high-permeability channels embedded in a low-permeability matrix. Parameter estimation is difficult in such systems because the discontinuities in the parameter space hinder the inverse problem. Previous research in this area has been focused on the use of stochastic methods. In this paper, we present a novel approach based on Traveling Pilot points (TRIPS) combined with subspace parameter estimation methods to generate realistic categorical parameter distributions that honor calibration constraints (e.g., - measured water levels). In traditional implementations, aquifer properties (e.g., hydraulic conductivity) are estimated at fixed pilot point locations. In the TRIPS implementation, both the properties associated with the pilot points and their locations are estimated. Tikhonov regularization constraints are incorporated in the parameter estimation process to produce realistic parameter depictions. For a synthetic aquifer system, we solved the categorical inverse problem by combining the TRIPS methodology with two subspace methods: Null Space Monte Carlo (NSMC) and Posterior Covariance (PC). A posterior ensemble developed with the rejection sampling (RS) method is compared against the TRIPS ensembles. The comparisons indicated similarities between the various ensembles and to the reference parameter distribution. Between the two subspace methods, the NSMC method produced an ensemble with more variability than the PC method. These preliminary results suggest that the TRIPS methodology has promise and could be tested on more complicated problems.

关键词： 道德与法治   社会参与能力   培养策略  

摘要： 教育不仅是简单的知识传授,还肩负着立德树人的职责。道德与法治这门课程,最直观的体现了这点,它既传授学生知识,又强调学生道德素养的提升,让学生具备一定的社会责任意识。在道德与法治这门课程中,老师要以让学生树立社会主义核心价值观为课程重点,将以人为本和立德树人作为课程的核心任务,通过对教学方式的完善和创新,引导学生建立正确的价值观、人生观、世界观,完善其社会参与能力,从而处理好自我与社会的关系,遵守道德准则,履行行为规范,增强社会责任感,促进个人价值实现,发展成为有理想信念、敢于担当的人。

关键词： Tiled clothing generation   Image-to-image translation   Clothing retrieval   Generative adversarial network  

摘要： With the popularity and development of the Internet, purchasing items that are similar to those that appear in videos or on fashion websites has gradually become an established trend in online commerce. Currently, determining how to accurately locate these similar items in a huge e-commerce database poses a major challenge. When processing images that contain clothes worn on the human body, traditional methods usually detect the clothes in these images first, add them to a database for clothing retrieval, and finally identify a few pieces of clothing with a high degree of similarity for recommendation. Generative adversarial networks (GANs) have been widely and successfully utilized in the field of image-to-image translation. In this paper, GAN is used to transfer human body images into tiled clothing images, which can be directly used for clothing retrieval. To achieve this, a category-supervised GAN under a cascading structure is proposed. For model training, a large-scale dataset was compiled that contains 39,521 image pairs. Experimental results demonstrate that the tiled clothing images generated by our proposed method deliver higher quality, as well as performance superiority, for clothing retrieval in comparison to other existing methods. (C) 2019 Elsevier B.V. All rights reserved.

关键词： Completion of categories   Cartesian closed categories   Toposes  

摘要： Every category K has a free completion PK under colimits and a free completion Sigma K under coproducts. A number of properties of K transfer to PK and Sigma K (e.g., completeness or cartesian closedness). We prove that PK is often a pretopos, but, for K large, seldom a topos. Moreover, for complete categories K we prove that PK is locally cartesian closed whenever K is additive or cartesian closed or dual to an extensive category. We also prove that PK is (co)wellpowered if K is a 'set-like' category, but it is neither wellpowered nor cowellpowered for a number of important categories. (C) 2019 Elsevier B.V. All rights reserved.

关键词： Quasi-homomorphism   Functorial coarse structure   Coarse group   Group ideal   Localization of a category   Coarse space   Coarse equivalence   Cardinal invariants  

摘要： Coarse geometry is the study of large-scale properties of spaces. In this paper we study group coarse structures (i.e., coarse structures on groups that agree with the algebraic structures), by using group ideals. We introduce a large class of examples of group coarse structures induced by cardinal invariants. In order to enhance the categorical treatment of the subject, we use quasi-homomorphisms, as a large-scale counterpart of homomorphisms. In particular, the localisation of a category plays a fundamental role. We then define the notion of functorial coarse structures and we give various examples of those structures. (C) 2019 Elsevier B.V. All rights reserved.

关键词： consumer preferences   discrete choice   functional food   Health claims   Xanthohumol  

摘要： There has been little research about which combinations of health claims, food product categories, and nutrient enrichment labellings are most appealing to consumers. This paper tests whether specific product group differences exist for health claims and ingredient labellings based on the food additive Xanthohumol. To analyze preference heterogeneity, differences between consumers with a high, medium, or low preference for organic food products were considered. For data collection, an online-based discrete choice experiment was applied in Germany for the product categories milk, yoghurt, water, cola, and chocolate. The choice experiments were analyzed with multinomial and mixed logit models. Positive effects for the considered health claims that are based on the effect of the food additive Xanthohumol could be found for water, milk, and yoghurt. The comparison of the different organic consumer segments revealed that respondents with a medium preference for organic food products show the highest preference for the considered health claims. © 2019, © 2019 Taylor & Francis Group, LLC.

关键词： 18M20  

摘要： The goal of this paper is to classify fusion categories C which are circle times-generated by an object X of Frobenius-Perron dimension less than 2, with the additional mild assumption that the adjoint subcategory of C is circle times-generated by the object X circle times X*. This classification has recently become accessible due to a result of Morrison and Snyder, showing that any such category must be a cyclic extension of a category of adjoint ADE type. Our main tools in this classification are the results of Etingof et al. (Quantum Topol 1(3);209-273, 2010. 10.4171/QT/6), classifying cyclic extensions of a given category in terms of data computed from the Brauer-Picard group, and Drinfeld centre of that category, and the results of Edie-Michell (Int. J. Math. 29(5):1850036, 2018. 10.1142/S0129167X18500362) which compute the Brauer-Picard group and Drinfeld centres of the categories of adjoint ADE type. Our classification includes the expected categories, constructed from cyclic groups and the categories of ADE type. More interestingly we have categories in our classification that are non-trivial de-equivariantizations of these expected categories. Most interesting of all, our classification includes three infinite families constructed from the exceptional quantum subgroups E4 of C(sl4,4), and E16,6 of C(sl2,16)boxed times C(sl(3), 6).