绽放的天空 三宅一生“绽放的天空”特展

正BAO BAO三宅一生此次的特展是在大阪阪急百货梅田总店举行,整个设计依然由多次设计该品牌店铺和展览的法国设计师Emmanuelle Moureaux担纲。特展名为绽放的天空,在这个充满快乐的春天般的空间里,7棵树上花朵盛开,色彩缤纷的空间中弥漫着甜甜的味道。矩形空间内并排设置了7棵树,用三角形小纸片简单折叠成的花,按不同颜色分7层悬挂在树顶上。花朵的颜色以渐变     

Soy protein isolate nanocomposite film enriched with eugenol,an antimicrobial agent: Interactions and properties

Nanocomposites films were designed from soy protein isolates (SPI), clays (Na⁺‐MMT), and eugenol an antimicrobial agent. Interactions between Na⁺‐MMT and eugenol were evidenced by a shift of the d‐spacing by X‐ray diffraction analysis. The addition of Na⁺‐MMT (5 and 7.5% w/w) in SPI solution increased its shear thinning behavior and its consistency. Accordingly, a good exfoliation of clays in SPI films was observed. The glass transition temperature of SPI films was impacted by the clays addition but not the water vapor permeability. In contrast, the addition of eugenol in SPI solution did not affected the consistency but induced a decrease of the SPI film T_g and an increase of the water vapor permeability. The presence of eugenol counterbalanced the effect of clays on consistency of film‐forming solution. The clay intercalation process was facilitated and the water vapor permeability and active agent release were modified. The presence of clay did not affect the antibacterial effect of eugenol/SPI films. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018 , 135, 45941.     

Evaluation of direct manipulation using finger tracking for complex tasks in an immersive cube

A solution for interaction using finger tracking in a cubic immersive virtual reality system (or immersive cube) is presented. Rather than using a traditional wand device, users can manipulate objects with fingers of both hands in a close-to-natural manner for moderately complex, general purpose tasks. Our solution couples finger tracking with a real-time physics engine, combined with a heuristic approach for hand manipulation, which is robust to tracker noise and simulation instabilities. A first study has been performed to evaluate our interface, with tasks involving complex manipulations, such as balancing objects while walking in the cube. The user’s finger-tracked manipulation was compared to manipulation with a 6 degree-of-freedom wand (or flystick), as well as with carrying out the same task in the real world. Users were also asked to perform a free task, allowing us to observe their perceived level of presence in the scene. Our results show that our approach provides a feasible interface for immersive cube environments and is perceived by users as being closer to the real experience compared to the wand. However, the wand outperforms direct manipulation in terms of speed and precision. We conclude with a discussion of the results and implications for further research.     

Grounded theorizing for electronically mediated social contexts

Electronically mediated social contexts (EMSCs), in which interactions and activities are largely or completely computer-mediated, have become important settings for investigation by Information Systems (IS) scholars. Owing to the relative novelty and originality of EMSCs, IS researchers often lack existing theories to make sense of the processes that emerge in them. Therefore, many IS researchers have relied upon grounded theory in order to develop new theory based on empirical observations from EMSCs. This article reviews a selected set of papers concerned with grounded IS research on EMSCs. It examines how the authors of these papers handled the characteristics of EMSCs and, in particular, addresses the topics of data collection, data analysis, and theory building. The paper also draws implications and recommendations for grounded researchers interested in investigating these original and fascinating environments in their future work. For example, it calls for grounded researchers on EMSCs to reflect upon the characteristics of their domains of inquiry, to respect the logic of discovery of grounded methods, and to articulate more clearly their theoretical ambitions along the induction/abduction continuum. The paper closes by suggesting promising areas for future grounded research on EMSCs, including taking advantage of the potential for combining qualitative and quantitative analytical methods.     

Phagocytosis of Erythrocytes from Gaucher Patients Induces Phenotypic Modifications in Macrophages,Driving Them toward Gaucher Cells

Gaucher disease (GD) is caused by glucocerebrosidase deficiency leading to the accumulation of sphingolipids in macrophages named “Gaucher’s Cells”. These cells are characterized by deregulated expression of cell surface markers, abnormal secretion of inflammatory cytokines, and iron sequestration. These cells are known to infiltrate tissues resulting in hematological manifestations, splenomegaly, and bone diseases. We have already demonstrated that Gaucher red blood cells exhibit altered properties suggesting their key role in GD clinical manifestations. We hypothesized that Gaucher’s erythrocytes could be prone to premature destruction by macrophages contributing to the formation of altered macrophages and Gaucher-like cells. We conducted in vitro experiments of erythrophagocytosis using erythrocytes from Gaucher’s patients or healthy donors. Our results showed an enhanced erythrophagocytosis of Gaucher red blood cells compared to healthy red blood cells, which is related to erythrocyte sphingolipids overload and reduced deformability. Importantly, we showed elevated expression of the antigen-presenting molecules CD1d and MHC-II and of the iron-regulator hepcidin in macrophages, as well as enhanced secretion of the pro-inflammatory cytokine IL-1β after phagocytosis of GD erythrocytes. These results strongly suggested that erythrophagocytosis in GD contribute to phenotypic modifications in macrophages. This present study shows that erythrocytes-macrophages interactions may be crucial in GD pathophysiology and pathogenesis.     

Managed Agreement: Generalizing two fundamental distributed agreement problems

This paper presents a family of agreement problems called Managed Agreement, which is parameterized by the number of aristocrat nodes in the system; NBAC is a special case of this family when all nodes are aristocrats while Consensus is a special case of this family when there are no aristocrats. The paper also presents a parameterized family of failure detectors F(A) such that F(A) is the weakest failure detector class that enables solving Managed Agreement with a set A of aristocrats in an asynchronous environment.     

Microporous polyacrylate matrix containing hydrogen bonded nanotubular assemblies

We report the straightforward photo-polymerization of polyacrylate films containing bis-urea based self-assembled nanotubes. The obtained materials are characterized by gas adsorption measurements, 129Xe NMR spectroscopy and WAXS. The presence of the bis-ureas is shown by butane adsorption (at 273 K and ambient pressure) to be responsible for the formation of a significant microporosity. This porosity is however not detected by the classical argon adsorption procedure (at 77 K and low pressure). This effect is attributed to the contraction of the material at low temperature and pressure, and may be of general concern for other organic porous materials. One of the potential advantages of the present materials is that the porosity results from the self-assembled nanotubes and should therefore be independent of the matrix mechanical properties. It should in particular be possible to adjust the flexibility of the matrix by changing the monomer composition.     

Exact boundary controllability of the Korteweg?de Vries equation around a non-trivial stationary solution

The exact boundary controllability of the non-linear Korteweg-de Vries equation on bounded domains is studied. Only the first spatial derivative at the right endpoint is assumed to be controlled. In this case, the exact controllability has been shown by Rosier (1997) when the length L of the domain is not in the set N