复杂建设项目的复杂性差异特征分析

通过245份复杂建设项目的问卷调查,基于单因素方差分析法,探索受访者特征如性别、年龄、教育背景、工作年限、项目职位以及项目特征,如项目类型、单位角色、参与阶段、项目投资、项目工期,在复杂建设项目的复杂性各维度的差异性特征,从而为项目管理者采取针对性管理措施提供实证依据。     

复矩阵的半正定性

研究了复半正定(非Hermite)阵的一些特征性质;讨论了复半正定阵的Kronecker积、Hadamard积及复半正定阵的复合阵的半正定性,得到了一些有用的结果,从而完善了矩阵的正定性理论。     

微生态保健制品的实验分析与应用

微生态保健制品有两种类型,即１）活菌制剂．有三种形式：（１）液态型．如各种活菌口服液及发酵乳;（２）固态型．如固体奶片,塑包粉剂,菌粉胶囊及微胶囊;（３）复合型．肠溶胶囊剂加促生因子口服液．２）促生因子．又称双歧杆菌,如各种寡糖类物质及其产品,它们能促进人体内双歧杆菌及乳杆菌的繁殖增多．通过对１３种市售微生态制品的实验分析,发现卫生指标基本符合,但不同剂型中功能活菌有很大差异．固态型（２．５×１０５～１．９７×１０８ｃｆｕ／ｇ）显著优于液态型（０～１．８×１０４ｃｆｕ／ｍｌ）．固态型中密封胶囊又较片剂和塑包粉剂为好,而密封肠溶胶囊加促生因子口服液的复合型微生态制剂则更优,已贮存１２个月胶囊中功能菌活存率尚达６２．４６％．     

系统方法论与决策研究范式内在关系研究

简述了系统方法论(SM)和决策研究范式(DP)思维演化过程,分析评述了SM与DP的内在对应关系。进一步,探讨了在面向复杂系统(CS)问题决策的研究中,新系统方法论对决策研究范式发展的启发和指导作用。     

闽西南古田-小陶花岗质杂岩体的形成时代和成因

古田-小陶花岗质杂岩体是由小陶、古田、华家、蛟洋和姑田等单元组成.小陶、古田和华家单元为含黑云母二长花岗岩,蛟洋和姑田单元是含角闪石黑云母石英二长岩.小陶和古田花岗岩以高SiO2（＞71.77%）、K2O（＞4.67%）和低CaO（＜1.71%）为特征,属于弱过铝-强过铝花岗岩;它们含高的Rb、Nb、Ta、Th、U和低的Sr、Ba含量;稀土（REE）含量和轻重稀土分异（（La/Yb）N）变化大,分别变化于143×10-6～548×10-6,和3.3～26.5,Eu亏损中等到强.姑田和蛟洋单元都以低SiO2,（62.88%～66.38%）和高Al2O3（15.44%～16.51%）为特征.姑田单元的REE总量低而蛟洋单元的REE总量高,但两者的Eu负异常都不明显.华家单元花岗岩的地球化学特征介于上述两组花岗岩之间.LA-ICPMS锆石U-Pb定年显示小陶花岗岩形成于222±3Ma,而古田花岗岩形成于161±1Ma.小陶、古田和姑田花岗岩具有相似的87Sr/86Sr初始比值（0.7089～0.7099）和εNd（t）值（-11.1～-11.5）,而且古田和小陶花岗岩的锆石Hf同位素组成也相似,表明它们起源于相同的源区.地球化学和Sr-Nd-Hf同位素指示它们的源区物质是具有1.73～1.5Ga平均地壳存留年龄的变质沉积岩.而位于杂岩体南部的华家花岗岩显示明显高的87Sr/86Sr初始比值（0.7310）和更低的εNd（t）值（-16.4）,指示它的母岩浆起源于古元古代壳源物质,暗示杂岩体南北基底组成可能不同.古田花岗岩形成于燕山早期的板内伸展构造背景,而小陶花岗岩形成于印支晚期,地球化学特征以及同时代岩石组合以及构造应力场分析表明其最可能形成于后造山构造背景.     

On the achievable tracking performance of NCSs over SNR limited channels

In this paper, the achievable tracking performance limitations of discrete-time, multi-input multi-output (MIMO) networked control systems (NCSs) are studied. The channel is modeled as an additive white Gaussian noise and signal-to-noise ratio (SNR) limited channel with feedback. Under this framework, the closed relationships among stabilization, tracking performance, and SNR limited are quantitatively revealed. Some new results a.erived according to the allpass factorization and Youla parameterization of two degrees of freedom controller. The results show that the best tracking performance is in connection with the unstable poles, non-minimum phase zeros of the system. It is also demonstrated that the tracking performance will be badly degraded by feedback channel noise and due to the SNR limited. Finally, a simulation example is presented to validate the conclusions.     

A Systems Approach to Identifying and Managing Opportunities and Constraints to Delivering Innovation Policy for Agriculture: An Analysis of the Australian Cooperative Research Centres (CRC) Program

Abstract

In this paper we outline an analytical approach to identifying points in the policy process where management intervention to adjust organizational design could enhance delivery of innovation policy over time. We illustrate this approach using an example from native vegetation policy in the state of Victoria, Australia. We then use this approach to interpret recent reviews of the Australian Cooperative Research Centres (CRC) Program, a policy instrument aimed at enhancing national economic growth by fostering innovation in research and development.

The approach described in this paper is grounded in the idea of policy as a complex and adaptive organizational system.

From the findings it was apparent that reviews of the Australian CRC Program have recognized some of its complex and dynamic properties. However, they have been limited in their capacity to translate this recognition into practical recommendations for organizational design to improve delivery on innovation, particularly in relation to the uptake of research outputs by industries such as agriculture. We propose that this is likely to reflect the bureaucratic foundations of innovation policy and the difficulties associated with changing processes and ways of managing them that have become locked in to the organizational system.

The design of policy instruments to deliver innovation, such as the CRC Program, should be informed by a detailed understanding of the dynamics that are mediating between policy objectives and outcomes over time. Dynamics such as the impact of bureaucratic constraints on the flexibility of policy processes and the participants engaged in them. In the absence of this sort of understanding, dynamics that critically affect the capacity of policy instruments to deliver innovation are likely to go unidentified and left to run their own course to an unpredictable and potentially counterproductive end.

While the idea of policy as a complex organizational system is well known, there remains a substantive gap in knowledge as to how thinking about policy in this way might be applied to generate practical options for improving organizational design. The analytical approach described in this paper addresses this gap in knowledge. In the absence of such approaches, the effectiveness of policy instruments such as the CRC Program, which are intended to foster innovation, will continue to be limited by deficiencies in organizational design.     

复杂系统方法在教育研究中的运用探索

本文在介绍了复杂系统方法的主要内容和特点的基础上探讨教育研究中运用复杂系统方法的由来、依据和主要方式,着重探讨了三类复杂系统即耗散系统、复杂适应性系统和开放的复杂巨系统的共同的特点：开放性、非线性,并以此为例说明复杂系统方法可在思想指导、复杂系统仿真技术、研讨厅体系等方面综合运用于教育研究中,并且可结合其他方法如“被研究者自述”等在实践中更好地解决复杂性难题。     

一种基于人视觉特性和复小波变换的彩色图像水印方案

利用双树复小波变换并结合人眼视网膜的颜色特性,提出一种基于融合的彩色图像水印方案。利用复小波变换的平移不变性和多方向性来增强水印受攻击时的鲁棒性。通过试验调整水印能量在蓝、绿、红3种颜色信道里的比例来提高水印的不可见性。结果表明该水印方案在压缩、增加噪声、中值和平均滤波攻击下具有较高的鲁棒性。     

〔(CH_2)_6N_4H〕_2〔RE(NO_3)_5(H_2O)_2〕(RE=Nd,Ce)的合成和晶体结构

采用四园衍射仪测定了标题的晶体结构,均属单斜晶系,空间群为P2_1/c,晶体参数:Nd〔Ce〕:a＝23.6353(6)〔23.6353(6)〕(?),b＝9.6483(6)〔9.6917(6)〕(?),c＝13.5515(6)〔13.5861(6)〕(?),β=112.348(7)〔112.316(8)〕°,v＝121.1873(3)〔121.3361(3)〕(?)~3,z＝4。