基于改进微分进化算法的风光互补系统发电容量优化配置

为有效兼顾风光互补发电系统的可靠性与经济性,以年缺电负荷率最小及微网系统投资建设成本最低为目标函数,以储能电池充放电次数、微网功率平衡以及电池充放电上下限等为约束条件,搭建风光互补系统发电容量优化模型。针对缺电负荷率、系统成本2个目标函数相悖的特点,考虑将帕累托非劣排序操作引入至常规微分进化算法,并对常规算法中的变异策略进行了相应改进,使得改进后的算法在具备多目标寻优能力的同时,寻优速度也得到了较为显著的提升。最后,应用所提改进多目标微分进化算法对风光互补系统发电容量优化模型进行求解,算例结果验证了该文模型的合理性和所提算法的有效性。

使用几何特征与隐Markov模型的手绘笔画图元分解

图元分解是笔交互的关键环节.提出一种将几何特征和隐马尔可夫模型HMM(hidden Markov model)结合的笔画图元分解方法.该方法采用4种关键几何特征来描述笔画的局部几何信息,并通过HMM结构对绘制上下文的建模来描述笔画的全局几何特性,进而利用全局搜索与最佳匹配实现在尽可能不丢失笔画几何信息的前提下对数据进行最大限度的压缩,可在保证系统计算效率的前提下同时完成分割点的查找与图元类型的判定.实验结果表明了该方法的有效性.

Evaluation of the colorectal cancer risk conferred by rare UNC5C alleles

AIM: To evaluate the risk associated with variants of the UNC5C gene recently suspected to predispose to familial colorectal cancer (CRC).

B cells with regulatory properties in transplantation tolerance

Induction of tolerance remains a major goal in transplantation. Indeed, despite potent immunosuppression, chronic rejection is still a real problem in transplantation. The humoral response is an important mediator of chronic rejection, and numerous strategies have been developed to target either B cells or plasma cells. However, the use of anti-CD20 therapy has highlighted the beneficial role of subpopulation of B cells, termed regulatory B cells. These cells have been characterized mainly in mice models of auto-immune diseases but emerging literature suggests their role in graft tolerance in transplantation. Regulatory B cells seem to be induced following inflammation to restrain excessive response. Different phenotypes of regulatory B cells have been described and are functional at various differentiation steps from immature to plasma cells. These cells act by multiple mechanisms such as secretion of immuno-suppressive cytokines interleukin-10(IL-10) or IL-35, cytotoxicity, expression of inhibitory receptors or by secretion of non-inflammatory antibodies. Better characterization of the development, phenotype and mode of action of these cells seems urgent to develop novel approaches to manipulate the different B cell subsets and the response to the graft in a clinical setting.

对打印和扫描具有鲁棒性的图像水印算法(英文)

提出了一种新的、对打印和扫描(几何失真和噪声较小)具有鲁棒性的图像水印算法.该数字水印是一种嵌入在傅里叶域并且被调制在高的载波频率的类方形噪声.文中还基于盲检测检验了几种不同的嵌入方法在不同失真上的鲁棒性,在载波频率实现了水印和傅里叶系数的归一化2D相关检验.

多结果三值图像多重构(英文)

少量的投影数据不能保证重构的完成,即使所研究的图像内只有3种质地.此前提出的Line Mojette算法能够在少量投影数据状况下完成重构,但仅限于单个且完全精确的重构结构能够得到的状况.为此,文中在Line Mojette算法的基础上,采用树分解来推演出一个名为Tree Line Mojette的算法来对三值图像进行重构,该算法可以在Line Mojette算法不能完成重构的情况下给出所有可能的重构结果.

Understanding the Assembly Mechanism of Proteins from Monte Carlo Simulations

Understanding the molecular mechanism of the protein assembly still remains a challenge in the case of many biological systems. In this frame, the mechanism which drives RodA hydrophobins to self-assemble onto the surface of the conidia of the human fungal pathogen Aspergillus fumigatus into highly ordered nanorods known as rodlets, is still unresolved. Here, AFM investigations were combined with Monte Carlo simulations to elucidate how these small amphiphilic proteins self-assemble into tightly packed rodlets and how they are further organized in nanodomains. It becomes that the assembly of RodA hydrophobins into rodlets and their parallel alignment within nanodomains result from their anisotropic properties. Monte Carlo simulations allowed us to confirm that anisotropic interactions between macromolecules are sufficient to drive them to assembly into rodlets prior to nanodomains formation. Better knowledge of the mechanism of hydrophobins assembly into rodlets offers new prospects for the development of novel strategies leading to inhibition of rodlet formation, which should allow more rapid detection of the conidia by the immune system.

Antimicrobial Characteristics of Untreated Wood: Towards a Hygienic Environment

Wood, as a contact surface, has been used for centuries but is usually questioned because of its porosity and organic composition. It has natural antimicrobial properties and, hygienically, can stand the comparison with other materials such as plastic, glass and steel. In this review, we focused on potential microbe-inhibiting properties of wooden surfaces being used in hygienically important places like health institutes and food industries. This article addresses the questionable properties of untreated wood like hygroscopicity, porosity, roughness and chemical composition, and their relation to the hygienic and antimicrobial nature of this material. The other factors linked to the hygienic properties of wood, such as age, species and type of wood, have also been discussed. Our analysis of literature will create better understanding for acceptance of wood as a safety renewable resource. It also provides an outline for future research considering wood material in critical healthcare or food industries.

3D Radiative Transfer Equation Coupled with Heat Conduction Equation with Realistic Boundary Conditions Applied on Complex Geometries

This paper presents the solution of coupled radiative transfer equation with heat conduction equation in complex three-dimensional geometries. Due to very different time scales for both physics, the radiative problem is considered steady-state but solved at each time iteration of the transient conduction problem. The discrete ordinate method along with the decentered streamline-upwind Petrov-Galerkin method is developed. Since specular reflection is considered on borders, a very accurate algorithm has been developed for calculation of partition ratio coefficients of incident solid angles to the several reflected solid angles. The developed algorithms are tested on a paraboloid-shaped geometry used for example on concentrated solar power technologies.

Effect of CuI Anode Buffer Layer on the Growth of Polymers Thin Films and on the Performances of Organic Solar Cells

Organic photovoltaic cells using polymer belonging to the aniline-heteroaryl family as electron donor have been achieved by thermal evaporation. We show that the properties of the polymer film, morphology, molecule order and conductivity depend strongly on the bottom anode buffer layer. While cells without anode buffer layer or with MoO3 or CuI anode buffer layer have been probed, we show that CuI allows improving strongly the cells efficiency through an improvement of the morphology and conductivity of the polymer film. This shows that although it is necessary a good band matching at the interface, this is not sufficient, because the templating effect of CuI on the polymer film is primordial for photovoltaic cells improvement.

Alkyl Thiophene Vinylene Electropolimerization in C₈mimPF₆, Potential Use in Solar Cells

We report the electrosynthesis of a novel semiconductor polymer based on alkyl vinylthiophene derivative in the presence of an ionic liquid (IL). The polymerization was performed under galvanostatic conditions and the polymer was studied as potential donor component of a multilayer heterojunction organic solar cell (OSC). The monomer used was (E)-1,2-di-(3-octyl-2-thienyl) vinylene (OTV) and the IL used for the electropolymerization was 1-octyl-3-methylimidazole hexafluorophosphate C8mimPF6. Optical properties, stability and morphology of the polymer were analyzed using FT-IR, UV-vis, Raman and XPS spectroscopy. Voltammetry analysis and scanning electron microscopy (SEM-EDX) were also performed on the polymer. The OSC assembled with the polymer of OTV was used as electro donor and C60 as acceptor. Molybdenum trioxide (MoO3) and bathocuproine (BCP) were used as buffer layer between anode and cathode respectively. I-V curves, in the dark and under AM 1.5 solar simulator were performed to measure its efficiency.

Fabrication Parameter Optimization for a Multilayer Photovoltaic Cell Based on the Heterojunction: Zinc(II)-Meso-Tetrakis(4-Bromophenyl) Porphyrins/Fullerenes

The photoelectric properties of multilayer organic photovoltaic cells (OPV cells) were studied. The active organic layers consisted of a planar heterojunction between a layer of Meso-Tetrakis(4-BromoPhenyl) Zinc(II) Porphyrin (BrPhPZn) as electron donor (ED) and a layer fullerene molecules. The devices were fabricated in a high vacuum by thermal sublimation, a technique that allows multilayer devices realization easily by successive depositions, and it does not require solvents, achieving purer films with reproducible characteristics. Taking into account that the anodic contact, a key factor for cell efficiency, is favored by the inclusion of a thin anodic buffer layer (ABL), the effect on the yield after including one or two (ABL): MoO3 or MoO3-CuI layers was studied. The cell which has the best photovoltaic characteristics has a BrPhPZn (ED) thickness of only 12.5 nm. This small thickness is related with the low conductivity of this organic molecule. On the other hand, including a thin MoO3-CuI bilayer increased, such device’s efficiency in a 200%, with regard to a cell without ABL, getting for one cell ITO/MoO3-CuI/BrPhPZn/C60/Alq3/Al, with a 1.03% yield.

三维显示技术引起的视觉疲劳研究综述（英文）

三维(3D)显示技术正越来越吸引着人们的注意。3D显示中所增加的深度信息可以让人们增强体验感,但也会引发观测者的视觉不舒适和疲劳问题,极大地阻碍了3D显示技术在人们生活中的普及。由于3D显示技术引起的视觉不舒适和视觉疲劳关系到人们的健康安全问题,近年来大量学者对此进行了广泛而深入的研究。针对当今最先进的3D显示器技术引发的视觉不舒适的相关研究做一概括总结,包括3D显示技术、视觉疲劳的引发因素、对于视觉不舒适的主观测试方式以及仪器的预测方法。这对3D显示器、3D电视以及3D电影制造商具有参考价值。

Highlights of the 2nd International Symposium on Tribbles and Diseases: tribbles tremble in therapeutics for immunity, metabolism, fundamental cell biology and cancer

The Tribbles(TRIB) family of pseudokinase proteins has been shown to play key roles in cell cycle, metabolic diseases, chronic inflammatory disease, and cancer development. A better understanding of the mechanisms of TRIB pseudokinases could provide new insights for disease development and help promote TRIB proteins as novel therapeutic targets for drug discovery. At the 2 nd International Symposium on Tribbles and Diseases held on May 7–9, 2018 in Beijing, China, a group of leading Tribbles scientists reported their findings and ongoing studies about the effects of the different TRIB proteins in the areas of immunity, metabolism, fundamental cell biology and cancer. Here, we summarize important and insightful overviews from 4 keynote lectures, 13 plenary lectures and 8 short talks that took place during this meeting. These findings may offer new insights for the understanding of the roles of TRIB pseudokinases in the development of various diseases.

Generation of a Double KO Mouse by Simultaneous Targeting of the Neighboring Genes Tmem176a and Tmem176b Using CRISPR/Cas9:Key Steps from Design to Genotyping

The CRISPR/Cas9 system has been tailored to a revolutionary genetic tool because of its remarkable simplicity and efficacy.While complex genome editing in the mouse since the 1990 s has been dominated by the use of embryonic stem（ES） cells,CRISPR/Cas9 now offers a versatile and fast approach to precisely modify virtually any DNA regions directly in mouse zygotes.Yet,this relative simplicity does not preclude a conscientious preparatory work that is often neglected when initiating a project.Here,we describe the key steps leading to successful generation of a double knockout（KO） mouse by simultaneously targeting two homolog genes,Tmem176 a and Tmem176 b,which are located in the same genomic locus.Additionally,we show that similar efficiency can be obtained in a mixed genetic background or directly in the C57BL/6 inbred strain.Thus,presented as a detailed case study that should be helpful to the non-specialists,we focus on the genotyping strategy to anticipate the various possibilities.

Nanosize Effects on Structural and Electrlcal Properties of Conjugated Polymer Nanowires

1 Introduction Conjugated polymer nanofibers (nanowires,nanotubes,nanorods) are promising as building-blocks for many applications,such as bio- and chemical sensors and drug release,field emission or electrochromic displays,nanodevices,and nano OLEDs.Understanding the mechanisms responsible for their unique electrical,optical and electrochemical properties is thus a foremost point.Here,we report for the first time on a systematic study with the diameter of the electrical properties in Poly(3,4-ethylened...

Toward Rational Composite Electrodes for Improved Li Batteries

1 Results Although electrodes for lithium batteries are generally prepared with standard formulations and routine processing conditions,more and more studies report relationships between processing conditions,composite electrode morphology and electrochemical performance.In our previous work,we obtained a 50% increase of the cycling capacity of Li1.1V3O8 based electrodes after using a PEO binder which had been pre-plasticized by the solvent (ethylene carbonate (EC) + propylene carbonate (PC)) of the liq...