抚州地区野生蜜源植物及其开发利用

抚州地区有野生蜜源植１３７种,隶属于５６科１０７属,其中主要蜜源植物２１种,辅助蜜源植物１１６种,有毒蜜源植物１０种。文中提出了对它们的开发利用及存在的问题等。     

浅议城市垂直绿化

垂直绿化可有效利用建筑物巨大的表面积 ,缓解城市增绿与用地紧张的矛盾 ,是一项费省效宏的城市增绿的重要途径。提出了实施城市垂直绿化的几点建议。     

提高环境CO2浓度和环境温度对植物光合作用的影响

就环境CO2浓度增加和大气温度上升后对植物光合作用的影响进行论述,讨论高CO2浓度和高温环境植物光合速率、光合色素含量、Rubisco含量和活性以及叶绿素诱导荧光动力学特征参数的变化,探讨在高CO2浓度和高温环境下植物光合作用的适应性情况。     

Semiparametric inference for survival models with step process covariates

The authors consider Bayesian methods for fitting three semiparametric survival models, incorporating time‐dependent covariates that are step functions. In particular, these are models due to Cox [Cox ( 1972 ) Journal of the Royal Statistical Society, Series B, 34, 187–208], Prentice & Kalbfleisch and Cox & Oakes [Cox & Oakes ( 1984 ) Analysis of Survival Data, Chapman and Hall, London]. The model due to Prentice & Kalbfleisch [Prentice & Kalbfleisch ( 1979 ) Biometrics, 35, 25–39], which has seen very limited use, is given particular consideration. The prior for the baseline distribution in each model is taken to be a mixture of Polya trees and posterior inference is obtained through standard Markov chain Monte Carlo methods. They demonstrate the implementation and comparison of these three models on the celebrated Stanford heart transplant data and the study of the timing of cerebral edema diagnosis during emergency room treatment of diabetic ketoacidosis in children. An important feature of their overall discussion is the comparison of semi‐parametric families, and ultimate criterion based selection of a family within the context of a given data set. The Canadian Journal of Statistics 37: 60–79; © 2009 Statistical Society of Canada     

培育植保生态文化 促进可持续农业发展

简要分析了当前植物保护存在的问题及其原因,提出了植保生态文化的概念,并讨论了植保生态文化的涵义,指出了培育植保生态文化、促进可持续农业发展的必要性,进而阐述了培育发展植保生态文化的对策建议。     

清末四川庙产兴学进程中的砍伐庙树

清末四川庙产兴学过程中,作为庙会公产资源之一的庙树,在各地都曾被砍伐,以为修缮、营造学堂之用,或筹作学堂运作经费。在不同的地区,砍伐庙树的目的和特点有所不同。同时,砍伐庙树过程中存在弊混谋利的情况,引起了大量的冲突和诉讼,反映出清季推行现代化过程中国家与民众及民众团体在传统的习惯、仪式和信仰问题上常发生的对抗。对这一问题的考察,可增加我们对晚清地方学务运作过程和近代乡村社会文化变迁的了解。     

现代多媒体技术在植物保护教学中的应用

传统的植物保护教学无法生动地表达教学内容,现代多媒体教学技术应运而生。论文论述了现代多媒体技术在植物保护教学中的优势及多媒体技术在《植物保护》课件制作中的实现关键和《植物保护》课件的设计理念与实现方法,论文还阐述了现代多媒体技术在植物保护教学中的应用效果,经过教学实践的应用,现代多媒体技术提高了教学质量。     

模拟植物生长算法与知识创新的几点思考

讨论了知识DNA的跨域映射思想.基于这种思想,对模拟植物生长算法(PGSA)的理论体系和应用案例进行了分析.PGSA是以植物向光性理论为启发式准则的智能算法,该算法在各领域中的应用情况表明,知识DNA(如植物生长、遗传变异、蚂蚁觅食、鸟群捕食、固体退火等规律的知识)的跨领域映射对于智能算法的创新具有一定的现实意义.     

Framework for assessing the strategic plant role and deploying an improvement roadmap in global operations networks: an empirical study

In the current global economy, with an increased international presence of all types of organisations, the design and management of global operations networks (GON) plays a vital role in organisational competitiveness. Whilst all types of organisations are facing significant challenges for managing increasingly complex global operations, current literature on GONs is still limited in its scope. The aim of this paper is to discuss the development and evaluation of a construct for assessing the strategic plant role and developing of an improvement roadmap in GONs. This research makes a contribution to current knowledge on global operations by extending the model proposed by Ferdows in ‘Making the Most of Foreign Factories’ (HBR, 1997) and operationalising it to enable its application for the design and optimisation of GONs.     

Classification trees aided mixed regression model

This paper introduces a novel hybrid regression method (MixReg) combining two linear regression methods, ordinary least square (OLS) and least squares ratio (LSR) regression. LSR regression is a method to find the regression coefficients minimizing the sum of squared error rate while OLS minimizes the sum of squared error itself. The goal of this study is to combine two methods in a way that the proposed method superior both OLS and LSR regression methods in terms of R² statistics and relative error rate. Applications of MixReg, on both simulated and real data, show that MixReg method outperforms both OLS and LSR regression.