语义信道编译码器模糊匹配场景下的发端设计

从香农经典信息论到语义通信,信息传递模式由“比特传输”逐渐向“语义传输”转变。传统通信中,码本作为编译码器的共同语言,可以保证通信的无歧义传输。然而,语义编译码器可能无法实现精准匹配,进而导致无法利用经典信息论来解决语义通信问题。首先,提出了语义信道编译码器模糊匹配时的通信系统,其中语义信道译码器固定,只能通过单方面设计语义信道编码方式来降低语义信息被错误接收的概率。然后,特别考虑了一个简单的语义通信系统,其中语义信道为一个语义对称信道。受语义译码器的性能约束,语义编码器只能通过重复发送语义符号来降低语义信息被错误译码的概率。最后,给出语义信息的平均译码错误概率与传输次数之间的关系。

Design of Roof Cover Structures by Help of Numerical Models Defined in Formian

Numerical models defined by means of a suitably assumed set of parameters make it possible to select the optimal structural solution for the given or assumed conditions. The paper presents examples of applications of numerical models defined in the programming language Formian during the shaping processes of various types of spatial structural systems designed for roof covers. These types of numerical models can be relatively easily adapted to the requirements, which can be frequently changed during the investment process, what makes possible a considerable reducing of costs and time of design of the space structures having even the very complex shapes. The advantageous features of application of numerical models defined in Formian are presented in models determined for selected forms of the roof covers designed also by means of a simple type of a space frame. In the paper, there are some presented visualizations made on bases of these models defining mainly for structural systems developed recently by the author for certain types of the dome covers. The proposed structural systems are built by means of the successive spatial hoops or they are created as unique forms of the geodesic dome structures.

自闭症个体语义加工障碍综述

近年许多研究关注自闭症个体语义加工,并发现他们在语义加工方面存在障碍,自由回忆词汇数量显著较少,语义聚合程度显著较低。"语义编码缺陷说"和"语义检索缺陷说"是目前解释自闭症个体语义加工障碍的两种代表性观点。自闭症个体回忆时加工水平效应的缺乏和检索提示回忆时的良好表现分别成为支持两种观点的最有力证据。