摘要：＂Hollow mask illusion＂ is an optical illusion and appears due to an error in the process of reconstructing the three-dimensional objects from our two-dimensional retinal image. In this paper, we present a computational method to create ＂Hollow mask＂ type new illusionary solid by calculating the hollow structure and its shading. The straight line Voronoi diagram for a given shape obtains the three-dimensional vertices of the hollow structure and the shading effect on each surface is calculated under the assumption that each surface has diffusely reflecting surface（Lambertian reflectance）. We also show two examples of our new illusionary solid works.

摘要：We present a method to represent multi-resolution vector graphics such as road networks or railway networks in virtual environment. These vector data can be interactively edited and the landscape and be explored in real time at any altitude from flight view to car view. We design a context-focused vector description of linear can areal features, with associated customized definition painter to specify their appearance （color and material） and their display mode （detailed mode or simplified mode）. There are some special problems in drawing vector graphics in virtual environment. Floating-point round-off error appear when we use a low view point to observe the scene, and it leads to scene jittering. Drawing 3D wide lines turns into a problem on 3D terrain. We design a view-based self-adaptive interpolation algorithm and an offset line generating algorithm to solve it. Our results show high performance with good visual quality.

摘要：研究在日本传统"诗吟"表演中,在干信号中加上适当时延的单个反射声是否更为有利.专业"诗吟"表演者嗓音中对典型的"节"的吟唱是该种表演艺术的一种独特的吟咏方式.对此及对"节"外内容的吟唱都在消音室中加以录音.文中通过成对比较法试验得出了主观优选的标度值.结果表明,在聆听对"节"的吟唱时,听者更喜欢在干信号中加上延时为10～30ms的单个反射声,而在聆听对"节"外内容的吟唱时,加上单个反射声与否对听者而言并无显著的差别.文中对此项发现从吟唱"节"的声源信号的自相关函数的包络特征上加以讨论.

摘要：Sodium-ion batteries have been achieving widespread attentions in grid-scale electrical energy storage systems owing to their earth abundant resources[1].However,the energy-density ceiling from cathode materials has been one of primary factors precluding the further practical applications of sodium-ion batteries[2].

摘要：随着人们对于储能器件微型化、长寿命需求的日益增加,电化学储能器件的体积能量密度成为其重要性能指标.锂硫电池作为下一代重点发展的高比能量二次电池,其先进电极材料的研发受到越来越多的关注.碳材料的使用可有效提高器件性能,然而较低的电极密度导致锂硫电池体积能量密度较低.通过对电极材料的设计以及结构调控,实现电极材料致密化,可以有效解决这一问题.一方面,提高复合电极材料中硫的含量,可以提高材料整体密度,减少非活性组分,提升电极体积比容量;另一方面,通过实现碳材料的致密化,也可以提高碳/硫复合电极材料密度的调控,获得具有高体积比容量的电极材料.本文对目前关于高体积比容量锂硫电池电极材料的研究工作进行了评述,虽然目前这一方向的研究尚处起步阶段,但其必将成为未来锂硫电池研究的重点.通过集成材料设计、组装、器件结构优化等多方面工作,能够实现高体积比容量电极材料和高体积能量密度锂硫电池的应用,推动电化学储能领域的发展.

摘要：Sodium layered oxides generally suffer from deep-desodiation instability in P2 structure and sluggish kinetics in O3 *** will be great to design P2/O3 biphasic materials that bring the complementary merits of both ***,such exploration is hindered by the ambiguous mechanism of material ***,supported by theoretical simulations and various spectroscopies,we prove that P2/O3 biphasic structures essentially originate from the internal heterogeneity of cationic potential,which can be realized by constraining the temperature-driven ion diffusion during solid-state ***,P2/O3 biphasic Na_(0.7)Ni_(0.2)Cu_(0.1)Fe_(0.2)Mn_(0.5)O_(2)-δ with well-designed quaternary composition is successfully obtained,exhibiting much-improved rate capabilities(62 mAh g^(-1)at 2.4 A g^(-1)) and cycling stabilities(84%capacity retention after 500 cycles)than its single-phase ***,synchrotron-based diffraction and X-ray absorption spectroscopy are employed to unravel the underlying sodium-storage mechanism of the P2/O3 biphasic *** work presents new insights toward the rational design of advanced layered cathodes for sodium-ion batteries.

摘要：LiNiO_(2)(LNO)基态的晶体结构和电子结构长期以来存在着实验与理论计算不一致的争议.实验上观测到LNO是空间群为R3m的半导体并且有局部的Jahn-Teller(JT)畸变,但理论计算却表明它是处于亚稳态的金属并且没有任何的JT畸变.本文基于杂化密度泛函理论HSE06,首次模拟了与实验等同浓度(~3%)的Ni/Li反位缺陷对LNO的影响,发现缺陷能够有效调控LNO中的JT效应.在LNO中引入Ni/Li反位缺陷后,其结构发生了局部的JT畸变,并且其带隙值约为0.5 eV,这些计算结果都和实验现象非常吻合.Ni/Li反位通过粒径效应和库伦作用,既能诱发JT畸变,又能阻碍畸变之间的协同作用,避免相变到C2/m,而只产生局部的JT畸变.本文提出了一种新的策略来解释LNO基态晶体结构和电子结构长期以来的争议,对推动富镍层状材料的设计和应用具有重要意义.

摘要：Complex urban scenery is generally composed of gigantic amount of detailed buildings, efficient representation and rendering are essential for its visualization. We present an accelerating method for urban visualization. Our approach can optimize the organization of models in accordance with the quadtree based terrain, which makes the parallelization easier. Through minimizing the draw call within one rendering process, our approach can reduce the time cost of each frame and improve the framerate greatly. Hereby, our system can handle large-scale detailed models with high diversity and also can afford the ability to adjust the rendering strategy automatically according to the state of the hardware.

摘要：Japan is facing a demographic challenge of a falling birthrate coupled with an aging society that is already adversely affecting the economy. The situation is only expected to worsen as the working-age population continues to decrease. Well aware of this situation, businesses and offices are seeking ways to enhance the intellectual productivity of their workers. This paper explores environmental elements of work spaces that might stimulate intellectual activity. Using a CAD （AutoCAD） miniature garden program, subjects were asked to design a project room that is optimized for creative work using a certain number of elements--11 types of walls, 14 types of floors, 4 types of scenery, 3 types of furniture and 3 types of plantings--but the subjects were free to position and arrange these elements any way they want. The subjects were then interviewed using the evaluation grid method. Based on the results, we created an evaluation structure diagram by analyzing key words and phrases emphasized by subjects in the interviews. The overall evaluation structure represents a summary overview of all 30 subjects who participated in the experiment. This approach captures all the key elements of the office environment that might be used to stimulate intellectual activity of employees.

摘要：为使可重构扫描网络免受未经授权的访问、恶意仪器对传输数据的窜改和嗅探3种安全攻击的影响,提出了锁定隔离安全结构.该结构首先把彼此不具有安全威胁的仪器分成一组,通过控制隔离信号实现组与组之间的单独访问,以防止恶意仪器对传输数据的窜改和嗅探.然后通过使用锁段插入位保护关键的仪器,只有扫描网络中处于特定位置的多个键值被设置成特定值(0,1序列)时锁段插入位才能打开,能加大未经授权访问的难度.此外,为解决仪器分组多导致硬件开销大和布线困难的问题,提出了仪器分组算法,根据仪器间的安全关系构建无向图,然后对无向图求极大独立集,能有效地减少仪器分组数.在ITC 02基准电路上的实验结果表明,与国际上同类方法相比,所提的安全结构打开锁段插入位所需要的时间增大了7倍,在面积、功耗和布线上的平均减少百分比分别为3.81%,9.02%和4.55%.