制造企业绿色产品创新与扩散过程中的博弈分析

针对收益不确定性而导致的绿色产品创新动力不足问题,结合现实国情,将绿色产品的发展分为创新期、推广期和普及期三个阶段,采用博弈论和最优化理论探讨了绿色产品创新和扩散过程中制造企业间的博弈行为,得到了创新企业和竞争企业在不同阶段的决策结果.基于对市场逆需求系数等参数的分析,提出了推动绿色产品创新及其扩散的前提条件和相关措施.研究表明:在一定的企业内外部条件下,绿色产品创新者具有先动优势,同行企业间的博弈竞争是推动绿色产品发展的重要动力和有效渠道,并推动消费者福利不断增加.     

允许卖空情况下证券投资组合的概率准则模型

从概率角度出发，提出一种新型证券投资组合模型、该模型把实现预期收益的概率作为目标函数，使之达到最大。文中将概率准则模型与传统模型作对比分析，解释了该模型的现实意义、在允许卖空的市场条件下，使用优化方法给出了模型的最优解及目标函数的解析表达式，并给出数值算例。     

信息商品捆绑售与歧视定价分析

信息商品具有与有形商品不同的特点,投入固定成本高,再生产的边际成本低等,使得有形商品的基于成本的定价理论不适适用于信息商品,信息商品在定价和销售方面必须以新的方式进行,捆绑式销 当前此较流行的信息商品销售方法之一,这种方法充分考虑了生音的低边际成本,本文分析了信息产品捆绑式销售原因,提出了捆绑式销售的基本模型,研究了捆绑式销售的歧视定价策略。     

Spectral transformation-based technique for reducing effect of limited pre-correlation bandwidth in the GNSS receiver filter in presence of noise and multipath

This paper proposes an efficient scheme to reduce the pre-correlation bandwidth effect in the global navigation satellite system(GNSS) receiver filtering process. It is mainly based on the application of a spectral transformation to the satellite-emitted signal that effectively reduces its band. At the receiver’s end, this operation causes the spreading of noise over a much wider band than that used by the radio frequency stage. Consequently, the resulting auto-correlation function in the acquis...     

玉米根际环境研究进展

从玉米根际氮、磷、钾养分富集及亏缺状况和根际土壤酶、根分泌物、根际微生物及接种VA菌根对根际环境的影响等方面,对玉米根际微域环境研究进行了概要综述,提出了以后玉米根际环境研究中需深入的几个问题。参35。     

投标报价决策模型进展

在竞争性招标中,投标决策是一个充满着不确定性的复杂决策过程.报价决策的方法主要分为报高价或现金流预测模型和基于承包商风险评价的报价策略模型.文中分别对此进行了综述,指出了两类模型的局限性和模型应用中应注意的事宜,及目前国内承包商投标报价决策的努力方向.     

随机扰动下一类混沌系统的同步

基于工程上广为应用的非线性鲁棒观测器思想,在随机扰动存在的情况下,对一类混沌系统成功地实现了同步。响应系统分两步进行设计,首先利用矩阵理论通过线性变换将受扰混沌系统进行扰动解耦,使系统部分状态与扰动无关,然后针对扰动解耦系统设计非线性观测响应系统。同时结合混沌吸引子有界性这一特点,将观测器存在条件化为求解系统的LMI,最终的仿真结果证明了该方法的有效性。     

超宽带TH-PPM 调制技术抗干扰性能研究

针对超宽带TH-PPM调制技术在多个频带干扰条件下的抗干扰性能进行了分析研究。基于超宽带TH-PPM调制所使用脉冲波形的不同,推导得出了在多个频带干扰条件下,超宽带TH-PPM调制技术的抗干扰能力指标的通用数学表达式。该结果对单频带干扰也同样适用。此外,在多个频带干扰条件下,对超宽带TH-PPM调制技术、直接序列扩频调制技术和跳频调制技术的抗干扰性能进行了比较分析研究,并分别对其进行了数值仿真。仿真结果表明,在多数情况下,超宽带TH-PPM调制技术抑制多个频带干扰的能力,明显优于直接序列扩频调制技术和跳频调制技术。     

A partial robust optimization approach to inventory management for the offline-to-online problem under different selling prices

This study examines an optimal inventory strategy when a retailer markets a product at different selling prices through a dual-channel supply chain, comprising an online channel and an offline channel. Using the operating pattern of the offline-to-online (O2O) business model, we develop a partial robust optimization (PRO) model. Then, we provide a closed-form solution when only the mean and standard deviation of the online channel demand distribution is known and the offline channel demand follows a uniform distribution (partial robust). Specifically, owing to the good structural properties of the solution, we obtain a heuristic ordering formula for the general distribution case (i.e., the offline channel demand follows a general distribution). In addition, a series of numerical experiments prove the rationality of our conjecture. Moreover, after comparing our solution with other possible policies, we conclude that the PRO approach improves the performance of incorporating the internet into an existing supply chain and, thus, is able to adjust the level of conservativeness of the solution. Finally, in a degenerated situation, we compare our PRO approach with a combination of information approach. The results show that the PRO approach has more “robust” performance. As a result, a reasonable trade-off between robustness and performance is achieved.     

民营企业技术进步的战略选择

采用层次分析法分析企业技术进步战略的选择问题，并在此基础上用内生增长模型来分析技术引进的质量控制。     

多重网络中的创意扩散模型研究

基于线上线下多种渠道的创意扩散研究是企业管理的新兴研究热点之一.为此,引入多重网络理论与传播动力学理论,考虑工作中线下沟通、工作中通过企业社交媒体在线沟通及非工作时间电子沟通三种渠道,构建多种渠道构成的多重网络中的创意扩散模型.研究创意在多重网络中持续扩散的阈值条件,并对创意在多重网络中的扩散过程进行仿真实验.结果表明:1)当员工在单位时间内通过以上各渠道沟通的平均次数较接近时,在多重网络中创意扩散的速度较快,创意扩散的范围较广;2)与匀质网络相比,当非工作时间电子沟通子网络是无标度网络时,在多重网络中创意扩散的速度较快,扩散的范围较广;3)增大子网络层间创意扩散的相互促进作用对整个多重网络中创意的有效扩散有积极影响.     

产品优化设计的资源分配模型

研究产品优化设计中设定设计属性值的资源分配方法．考虑产品设计过程中多种资源的优化分配，在设计预算和资源约束下，设定产品设计属性值，使用户对产品的总体满意水平达到最大．这种方法使产品优化设计的品质功能展开方法从策略计划层扩展到运作计划层，把品质优化设计和资源分配结合起来，使得品质设计计划在部件展开(part deployment)层和运作层的工艺计划(operational process planning)更可行，更易实现．     

Smooth estimation of ROC curve in the presence of auxiliary information

Receiver operating characteristic (ROC) curve is often used to study and compare two-sample problems in medicine. When more information may be available on one treatment than the other, one can improve estimator of ROC curve if the auxiliary population information is taken into account. The authors show that the empirical likelihood method can be naturally adapted to make efficient use of the auxiliary information to such problems. The authors propose a smoothed empirical likelihood estimator for ROC curve with some auxiliary information in medical studies. The proposed estimates are more efficient than those ROC estimators without any auxiliary information, in the sense of comparing asymptotic variances and mean squared error (MSE). Some asymptotic properties for the empirical likelihood estimation of ROC curve are established. A simulation study is presented to demonstrate the performance of the proposed estimators.     

Analysis for MIMO correlated frequency-selective channel in the presence of interference

The space time spreading,superimposed training sequences,and space-time coding are used to present a multiple input and multiple output(MIMO)systems model,and a closed-form of average error probability upper bound expression for MIMO correlated frequency-selective channel in the presence of interference(co-channel interference and jamming signals)is derived.Moreover,the correlation at both ends of the wireless link that can be incorporated equivalently into correlation at the transmit end is also derived.which is significant to analyze space-time link algorithm of MIMO systems.     

以农畜产品深加工增值为特征的农牧复合型生态工程模式

农牧结合规律是当前生态农业发展过程中种植业、养殖业及农畜产品加工业之间的必然联系。农牧结合过程中以农畜产品深加工增值为特征的农牧加复合生态业工程发展较快,达到了牧结合的高级阶段。德惠市实行的以加工业为龙头的农牧加复合生态农业工程模型取得了良好的生态、社会和经济效益。     

生防真菌被毛孢的研究进展

介绍生防真菌被毛孢的分类、形态特征、种类、分布,对昆虫、螨类及植物寄生线虫等农业害虫的侵染机制、生防效果及分子生物学在被毛孢研究方面的应用,重点介绍了汤普森被毛孢、洛斯里被毛孢和明尼苏达被毛孢。     

新产品开发中的后备盟友选择问题

提出新产品开发项目中的后备盟友选择问题，建立非线性0－1机会约束规划模型，通过为各项开发活动选择后备盟友，实现项目整体失败风险最小化。根据模型的特点，设计带有随机网络模拟程序的遗传算法寻求后备盟友的最佳组合，仿真计算证明了算法的有效性和模型的实际应用价值。     

以系统工程的思想开发信息安全产品标准

信息安全产品标准的开发涉及到确定威胁、确定组织安全策略和假设、确定安全目的、标识安全功能要求、选择评估保证级别(evaluationassurancelevel,EAL)、验证一致性和完备性等方面,需要对产品进行复杂性分析,熟悉产品使用环境以及产品可能面临的威胁,因此开发信息安全产品标准的过程可视为一个系统安全工程.提出采用系统工程的思想,依据系统安全工程能力成熟模型(systems security engineering capability maturity model,SSE-CMM)提出的一套成熟的工程过程来指导信息安全产品标准的开发,以提高产品标准开发过程的可预见性,提高所开发的产品标准的质量,确保目标与实际结果的一致性.     

Optimal dividend strategies in the diffusion model with stochastic return on investments

This paper studies the optimal dividend problem in the diffusion model with stochastic return on investments. The insurance company invests its surplus in a financial market. More specially, the authors consider the case of investment in a Black-Scholes market with risky asset such as stock. The classical problem is to find the optimal dividend payment strategy that maximizes the expectation of discounted dividend payment until ruin. Motivated by the idea of Thonhauser and Albrecher (2007), we take the lifetime of the controlled risk process into account, that is, the value function considers both the expectation of discounted dividend payment and the time value of ruin. The authors conclude that the optimal dividend strategy is a barrier strategy for the unbounded dividend payment case and is of threshold type for the bounded dividend payment case.     

Optimal pricing of a personalized product

This paper deals with optimal pricing of a personalized product such as a personal portrait or photo. A new model of the pricing structure inspired by two real-life cases is introduced to the literature and solved to obtain optimal photo sitting fees and the final product price. A sensitivity analysis with respect to the problem parameters is performed.