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排序方式: 共有139条查询结果,搜索用时 31 毫秒
1.
Hai-Yang Li Sheng-Gang Li 《Soft Computing - A Fusion of Foundations, Methodologies and Applications》2008,12(5):487-492
This paper is devoted to congruences and ideals in pseudoeffect algebras. Let I be a normal ideal in a pseudoeffect algebra E. We show that: (1) the relation ~
I
induced by I is a congruence if and only if for every a∈E, I∩ [0,a] is upper directed; (2) the relation ~
I
induced by I is a strong congruence if and only if I is a normal weak Riesz ideal in a pseudoeffect algebra E. Moreover, we introduce a stronger concept of congruence—namely Riesz strong congruence—and we prove that, if I is a normal weak Riesz ideal in a pseudoeffect algebra E, then ~
I
is a Riesz strong congruence and, conversely, if ~ is a Riesz strong congruence, then I = [0]~ is a normal weak Riesz ideal, and ~
I
= ~.
This work was supported by the National Natural Science Foundation of China (Grant No. 10271069). 相似文献
2.
Dynamic Bayesian networks (DBNs) are probabilistic graphical models that have become a ubiquitous tool for compactly describing statistical relationships among a group of stochastic processes. A suite of elaborately designed inference algorithms makes it possible for intelligent systems to use a DBN to make inferences in uncertain conditions. Unfortunately, exact inference or even approximation in a DBN has been proved to be NP-hard and is generally computationally prohibitive. In this paper, we investigate a sliding window framework for approximate inference in DBNs to reduce the computational burden. By introducing a sliding window that moves forward as time progresses, inference at any time is restricted to a quite narrow region of the network. The main contributions to the sliding window framework include an exploration of its foundations, explication of how it operates, and the proposal of two strategies for adaptive window size selection. To make this framework available as an inference engine, the interface algorithm widely used in exact inference is then integrated with the framework for approximate inference in DBNs. After analyzing its computational complexity, further empirical work is presented to demonstrate the validity of the proposed algorithms. 相似文献
3.
Hai-Yang Chen Zuan-Yu Chen Min Mao Yu-Yue Wu Fan Yang Li-Xiu Gong Li Zhao Cheng-Fei Cao Pingan Song Jie-Feng Gao Guo-Dong Zhang Yong-Qian Shi Kun Cao Long-Cheng Tang 《Advanced functional materials》2023,33(48):2304927
Polydimethylsiloxanes (PDMS) foam as one of next-generation polymer foam materials shows poor surface adhesion and limited functionality, which greatly restricts its potential applications. Fabrication of advanced PDMS foam materials with multiple functionalities remains a critical challenge. In this study, unprecedented self-adhesive PDMS foam materials are reported with worm-like rough structure and reactive groups for fabricating multifunctional PDMS foam nanocomposites decorated with MXene/cellulose nanofiber (MXene/CNF) interconnected network by a facile silicone foaming and dip-coating strategy followed by silane surface modification. Interestingly, such self-adhesive PDMS foam produces strong interfacial adhesion with the hybrid MXene/CNF nano-coatings. Consequently, the optimized PDMS foam nanocomposites have excellent surface super-hydrophobicity (water contact angle of ≈159o), tunable electrical conductivity (from 10−8 to 10 S m−1), stable compressive cyclic reliability in both wide-temperature range (from −20 to 200 oC) and complex environments (acid, sodium, and alkali conditions), outstanding flame resistance (LOI value of >27% and low smoke production rate), good thermal insulating performance and reliable strain sensing in various stress modes and complex environmental conditions. It provides a new route for the rational design and development of advanced PDMS foam nanocomposites with versatile multifunctionalities for various promising applications such as intelligent healthcare monitoring and fire-safe thermal insulation. 相似文献
4.
Hai-Yang Li Sheng-Gang Li Min-Hui Zhu 《Soft Computing - A Fusion of Foundations, Methodologies and Applications》2008,12(11):1115-1118
In the paper, we prove that is compatible with p}, the set of commutant of p, and , the projection commutant of a, are all normal sub-effect algebras of a compressible effect algebra E, and is a direct retraction on E} is a normal sub-effect algebra of an effect algebra E. Moreover, we answer an open question in Gudder’s (Rep Math Phys 54:93–114, 2004), Compressible effect algebras, Rep Math
Phys, by showing that the cartesian product of an infinite number of E
i
is a compressible effect algebra if and only if each E
i
is a compressible effect algebra.
This work was supported by the SF of Education Department of Shaanxi Province (Grant No. 07JK267), P. R. China. 相似文献
5.
6.
目的 探索定量评价大黄鱼新鲜度的方法。方法 在整鱼背部采集近红外光谱, 将原始光谱预处理后分别与挥发性盐基氮(TVB-N)、菌落总数建立偏最小二乘(PLS)模型、区间偏最小二乘(iPLS)模型、向后区间偏最小二乘(biPLS)模型和联合区间偏最小二乘(siPLS)模型。结果 biPLS模型的精度最高、预测性能最佳。TVB-N的biPLS模型的校正集和预测集相关系数分别为0.8371和0.7652; 菌落总数的biPLS模型的校正集和预测集相关系数分别为0.878和0.7009。结论 大黄鱼的近红外光谱信息与其TVB-N、菌落总数间都存在较高的相关性, 所建模型可以快速、无损地定量评价大黄鱼的新鲜度。 相似文献
7.
由于无线网络较窄、昂贵的带宽,及移动设备自身有限的硬件能力,在无线移动环境中进行实时构件组装调用时面临着更多的技术挑战,需要一种高效、可靠的机制给予支持。本文提出一种基于移动Agent的无线网络环境构件组装调用机制。该机制利用移动Agent作为移动客户端与构件服务器之间交互的中介,提供了灵活、可配置的组装结构,从而有效避免移动客户端不必要的访问操作,节省了移动客户端的无线网络连接开销,与其他机制相比有着较高的执行效率;同时该机制可有效支持移动客户端发生故障后的状态恢复,从而确保运行过程的可靠性。最后本文通过实验分析了MAWA机制的可靠性与高效性。 相似文献
8.
Single crystalline α-alumina nanoribbons were synthesized by reacting aluminum with silicon monoxide at high temperature.
The products were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscope
(TEM), and high-resolution transmission electron microscope (HRTEM). The intense peaks of XRD pattern indicate that the prepared
nanoribbons have a high degree of crystallinity. In the present work, silicon monoxide was used as an oxidant and precursor,
which served to control the reaction rate. An interesting morphological evolution that nanoribbons resulted from nanosaws
was described, and these novel nanosaws were also carefully characterized. 相似文献
9.
为满足野外突发事件下的音视频实时传输的需要,以TMS320C6201 DSP、EP1C6Q240C8 FPGA为核心处理器和协处理器,以基于CCS2.20及DSP/BIOS集成开发环境设计C和ASM语言混合驱动程序,开发出了一款嵌入式实时音视频无线传输系统。该系统最大传输速率可达150Mbps、通信距离可达300米,并具有体积小、重量轻、便于携带等特点。 相似文献
10.
Hai-Yang Liu Zhen-Jie Zhang Wei Shi Peng Cheng 《Inorganic chemistry communications》2009,12(7):660-663
In this contribution, two novel metal phosphate/phosphate, namely [Zn2(HPO3)2(H2O)4]·H2O (1) and Cd5(HPO4)2(PO4)2(H2O)4 (2), were obtained by amino acid template-synthesis under mild hydrothermal conditions. X-ray crystallographic studies show that the inorganic network of 1 contains binuclear zinc building units with large 16-ring channels along [1 0 0] directions. The structure of 2 consists of asymmetric pentanuclear chiral motifs. It is notable that two centered pentanuclear cadmium structure motifs form a mesomeric unit, which is linked by bridging oxygen atoms to construct 3D inorganic network. 相似文献