浅析中国高等教育大众化

“高等教育大众化”不是简单地指某一静止状态 ,而是一个动态过程。我国总体经济实力不存在障碍 ,能够撑得起高等教育大众化。故我们要重新认识高等教育自身 ,从深层次探讨高等教育体制改革 ,形成多种形式办学的格局 ,开发西部地区更需要发展高等教育     

Dynamic scheduling of steel casting and milling using multi-agents

This paper presents a case study on the use of multi-agents for integrated dynamic scheduling of steel milling and casting. Steel production is an extremely complex problem requiring the consideration of several different constraints and objectives of a range of processes in a dynamic environment. Most research in steel production scheduling considers static scheduling of processes in isolation. In contrast to earlier approaches, the multi-agent architecture proposed consists of a set of heterogeneous agents which integrate and optimize a range of scheduling objectives related to different processes of steel production, and can adapt to changes in the environment while still achieving overall system goals. Each agent embodies its own scheduling model and realizes its local predictive-reactive schedule taking into account local objectives, real-time information and information received from other agents. Agents cooperate in order to find a globally good schedule, which is able to effectively react to real-time disruptions, and to optimize the original production goals whilst minimising disruption carried by unexpected events occurring in real-time. The inter-agent cooperation is based on the Contract Net Protocol with commitment.     

音乐家屈原考辨

通过史料考证屈原生活的音乐之乡、音乐之国和受到的良好乐教及音乐素养,分析屈原诗歌中对音乐的描摹、屈原的音乐创作及其《九歌》唐代在民间的影响,认为屈原是伟大的音乐家。     

Mining periodic patterns and cascading bursts phenomenon in individual e-mail communication

ABSTRACT

Quantitative understanding of human activity is very important as many social and economic trends are driven by human actions. We propose a novel stochastic process, the Multi-state Markov Cascading Non-homogeneous Poisson Process (M2CNPP), to analyze human e-mail communication involving both periodic patterns and bursts phenomenon. The model parameters are estimated using the Generalized Expectation Maximization (GEM) algorithm while the hidden states are treated as missing values. The empirical results demonstrate that the proposed model adequately captures the major temporal cascading features as well as the periodic patterns in e-mail communication.     

Bayesian model averaging for dynamic panels with an application to a trade gravity model

We extend the Bayesian Model Averaging (BMA) framework to dynamic panel data models with endogenous regressors using a Limited Information Bayesian Model Averaging (LIBMA) methodology. Monte Carlo simulations confirm the asymptotic performance of our methodology both in BMA and selection, with high posterior inclusion probabilities for all relevant regressors, and parameter estimates very close to their true values. In addition, we illustrate the use of LIBMA by estimating a dynamic gravity model for bilateral trade. Once model uncertainty, dynamics, and endogeneity are accounted for, we find several factors that are robustly correlated with bilateral trade. We also find that applying methodologies that do not account for either dynamics or endogeneity (or both) results in different sets of robust determinants.     

Subethnic interpersonal dynamic in diasporic community: a study on Chinese immigrants in Vancouver

ABSTRACT

Ethnicity is a social construct that can be conceptualised as a social classification delineating certain boundaries between an ethnic group and the dominant group. Members of an ethnic group are assumed to share similar cultural characteristics and to be homogenous among themselves. Many studies in ethnic organisations have indicated that subethnicity also exists within an ethnic group, but research on subethnicity is scant. Based on the findings of an exploratory study conducted in Vancouver, Canada, we examined how, at an interpersonal level, place of origin, language, mutual bias and discrimination and transnational politics divide the Chinese diasporic community subethnically. Meanwhile, being Chinese in the Canadian context and willingness to break the subethnic boundaries are noted as counterforces to the subethnic divide. We contend that interpersonal interaction is an imperative dimension for the understanding of the shaping of boundary between different subethnic groups.     

论技术创新的社会系统效应与本质

技术创新是目前企业谋求生存发展的根本出路.本文从企业的社会环境系统、文化价值观念、社会建制、社会动力系统、社会化过程、社会运行机制等方面,较为深入地揭示了技术创新的社会系统诸要素的综合效应、本质和规律,提出了许多独特见解,并同时阐示了我国企业在技术创新上所存在的诸问题及其解决方案.因此我们对技术创新的研究具有着重大的理论价值和现实意义.     

鲁迅与中国现代诗歌

鲁迅先生以其不同凡响的多样化新旧诗作和高屋建瓴、把握历史走向的进步诗观 ,为 2 0世纪中华诗歌的改革与发展、为诗人队伍的成长与壮大 ,为中国现代诗学的形成与创建 ,树立了崇高的榜样 ,作出了卓越的贡献。     

航空公司机上周转品多基地库存优化模型

在民航业日益激烈的市场竞争环境下，航空公司对成本控制的精细化管理显得尤为重要。本文基于航空公司的实际背景，针对为旅客提供的机上周转品，建立了一个多基地库存系统的库存优化模型。该模型以系统的总库存成本最小为目标，在考虑需求、回收、调运、安全库存等因素下，决策一个订货周期内的订货及调运方案。基于最优解的分析，在成本参数满足一定条件下，可以得到系统最优的期初订货量；在此基础上，可以将该模型转化为一个网络流模型，参考最小费用最大流算法，设计了一个多项式求解算法来求解该网络流模型，进而得到各基地之间的最优调运量，并证明该算法的最优性；此外，根据期初订货量可行解的范围，设计了一个求解原库存模型的启发式算法。通过实例分析，验证了该模型与两种算法的有效性。     

Breaking the outsourcing path: Backsourcing process and outsourcing lock-in

The objective of this paper is to develop research on backsourcing, which consists in recalling outsourced activities back in-house. We focus on the processes that firms follow to backsource these activities, particularly when they are locked into outsourcing. We refer to path dependence and path creation concepts to conduct this research. Using a case study methodology, we analyze the process related to the backsourcing of information technology activities in a telecommunications company. This paper highlights the negative effects of the need to control outsourced activities as it maintains outsourcing lock-in. Organizational crises and the perception of backsourcing as a success are two elements that enable significant mindful deviations from outsourcing practices and the development of a backsourcing path. The decision to backsource and its implementation can be facilitated by past successful integration experiences, internal productive capabilities, and capabilities to control activities. Changes in power relations within the firm can sustain the development of a backsourcing path. Our research contributes to research on organizational path breaking by studying the backsourcing process as an outsourcing path breaker. This paper complements studies on organizational practices such as outsourcing and backsourcing and their interplay.