一种微型智能化打印机

本文介绍一种由ＭＣＳ－４８单片微机构成的微型智能化打印机．该机以ＩＮＴＥＬ８０３９单片微机为核心，附加ＭＣ１４６８１８专用时钟芯片、存贮器、扩展并行口及ＭＰ－１５０打印机头构成．适用于实时性较强的各种信息记录和处理．文章结合该机在防火防盗报警系统中的应用实例，分析了硬件和软件的特点和结构．     

函数曲线的双圆弧拟合

本文介绍在计算机绘图系统中,对一般非圆函数曲线的双圆弧拟合的算法和原理。并提供程序框图以供参考。     

糯杂交高梁F_1代农艺性状的相关和通径分析

糯杂种高粱的9个农艺性状的相关分析表明,性状的遗传相关系数绝大多数大于表型相关系数。茎粗与千粒重相关的环境效应大,而基因型效应小,提高茎粗对增加千粒重主要靠环境效应。穗粒数与穗粒重的基因型相关和环境相关系数均大,故穗粒重的提高是基因和环境效应共同作用的结果。穗长和穗粒数与穗粒重呈正相关达显著或极显著水平,而一级分枝数和千粒重与穗粒重相关不显著。通径分析表明,穗粒数对穗粒重的直接效应最大,而穗长主要是起间接作用。从分析的4个性状来讲,对穗粒重的直接效应分别是穗粒数>株高>茎粗>穗长。     

黑格尔思辨逻辑中的判断学说

本文认为，要正确理解黑格尔的判断学说，就必须把该学说置于他思辨逻辑的整体构想之下。亚里士多德、康德为代表的传统学说主张，判断的结构是主词与谓词两种概念通过系词“是”的联结；黑格尔则认为，判断的结构乃是主词向着谓词的概念发展，“是”所刻画的正是概念“是起来”的生存论特征。黑格尔对判断的讨论同样服务于整个思辨逻辑的任务，即阐明一种自规定的生成机制。     

M-Estimation in the partially linear model with Bernstein polynomials under shape constrains

We develope an M-estimator for partially linear models in which the nonparametric component is subject to various shape constraints. Bernstein polynomials are used to approximate the unknown nonparametric function, and shape constraints are imposed on the coefficients. Asymptotic normality of regression parameters and the optimal rate of convergence of the shape-restricted nonparametric function estimator are established under very mild conditions. Some simulation studies and a real data analysis are conducted to evaluate the finite sample performance of the proposed method.     

礼学文献的重现与两汉礼学的演变

汉初礼学研习分化为礼义和容礼两派。徐生的容礼派与朝廷太常机构形成朝野互动,仕途目标为太常礼官大夫。高堂生完成了《礼经》十七篇的恢复和整理,初步形成了礼经家法传统。后仓撰成《曲台记》,推士礼而致天子,完成了礼经师法的创立。戴圣编《小戴礼记》四十九篇,从《礼古经》、《礼古文记》、《明堂阴阳》等文献中获取思想材料,创小戴礼家法。戴德编八十五篇《大戴礼记》,取材范围远超戴圣,显示了对天道、人性、历史和政治技术的浓厚兴趣,创大戴礼家法。庆普后学在东汉致力于国家礼典建设,将庆氏礼学发扬光大。郑玄对今、古文《礼经》文本进行校勘,择善而从,扬弃了各家法的缺陷,又利用《周官》解《礼经》,取得了空前的礼学成就,终结了两汉礼经学以师法和家法为标志的传统。     

Modeling Price Volatility Based on a Genetic Programming Approach

Business profitability is highly dependent on risk management strategies to hedge future cash flow uncertainty. Commodity price shocks and fluctuations are key risks for companies with global supply chains. The purpose of this paper is to show how artificial intelligence (AI) techniques can be used to model the volatility of commodity prices. More specifically, the authors introduce a new model – LIQ‐GARCH – that uses genetic programming to forecast volatility. The newly generated model is then used to forecast the volatility of the following three indexes: the Commodity Research Bureau (CRB) index, the West Texas Intermediate (WTI) oil futures prices and the Baltic Dry Index (BDI). The empirical model performance tests show that the newly generated model in this paper is considerably more accurate than the traditional GARCH model. As a result, this model can help businesses to design optimal risk management strategies and to hedge themselves against price uncertainty.     

中共“十大”错失历史机遇探析

“九一三事件”的发生，为结束“文化大革命”提供了一次良好的历史契机。但中共十大却错失了结束这场运动和“左”倾错误的绝好时机。这与领导人的主观认识、十大的筹备组织、政治方针等密切相关。     

河西农业开发的历史启迪

河西地区是历代王朝经略西北的关键地区。本文试图运用历史材料进行纵向对比分析，总结出有益的可供借鉴的经验教训，为今天的西部大开发提供服务。