Analysis of robust design experiments with time-dependent ordinal response characteristics: a quality improvement study from the horticulture industry

An approach to the analysis of time-dependent ordinal quality score data from robust design experiments is developed and applied to an experiment from commercial horticultural research, using concepts of product robustness and longevity that are familiar to analysts in engineering research. A two-stage analysis is used to develop models describing the effects of a number of experimental treatments on the rate of post-sales product quality decline. The first stage uses a polynomial function on a transformed scale to approximate the quality decline for an individual experimental unit using derived coefficients and the second stage uses a joint mean and dispersion model to investigate the effects of the experimental treatments on these derived coefficients. The approach, developed specifically for an application in horticulture, is exemplified with data from a trial testing ornamental plants that are subjected to a range of treatments during production and home-life. The results of the analysis show how a number of control and noise factors affect the rate of post-production quality decline. Although the model is used to analyse quality data from a trial on ornamental plants, the approach developed is expected to be more generally applicable to a wide range of other complex production systems.     

小额信贷可持续发展面临的问题及对策分析

小额信贷引入我国已有近二十年了,对我国的扶贫攻坚计划起了重要的作用,但随着经济形势的变化,小额信贷面临一些新的问题。本文从小额信贷的产品设计、目标群体的定位、财务可持续以及面临的风险等四个方面出发,分析了其面临的可持续问题,并在此基础上提出了相关对策。     

国内外产学研结合模式发展状况及启示

产学研是当今国内外普遍采用的促进企业经济社会效益的形式,具有快捷性、高科技性以及高效益性等特征。国内常采取建立联合创新平台、实行“学工交替”及“高校＋政府＋企业”、共建大学科技园等模式,而国外则启动国家科技创新计划、建立产学研合作组织、构建产学研合作目标、加快制度建设等,促进产学研有机结合。因此,我们要加快产学研立法工作,形成一整套促进产学研结合的信息沟通机制、双方互动机制、人才流动机制、成果评价体系,同时紧密结合地方实际进行产学研结合。     

个性化旅游在海南的发展前景

从旅游群体的变化看未来旅游市场的转型,个性化旅游在我省有广阔的发展空间,将对我省旅游业的可持续发展增添新的活力。     

商会的产生机理:一个利他主义的解释

对于只提供集体公共产品的商会来说,如果行业内的企业都是利己主义者,且加入商会完全自愿,则"搭便车"的行为会使得集体行动无法实现,商会的发生机制亦将成为难解之迷。假如行业中存在利他主义的企业,其利他行为将使其他企业意识到行业的共同利益,从而抑制各自的机会主义倾向。利他主义者的存在起到了一种"凝结核"的作用,他们除了付出物质上的代价去增进行业的共同利益外,还会付出时间和精力去游说其他企业,推动行业的集体行动。多数行业的市场结构是不完全竞争的,企业规模参差不齐,一些规模较大的企业对于通过集体行动来获得合作剩余有着更强烈的需求,为了增进自身利益和整个集团的利益,这些规模较大的企业会成为商会的发起人。     

略论资本经营内涵

本文在界定产品经营、商品经营、资产经营诸概念的同时 ,论述了资本经营的内涵及其与其它经营类型之间的关系     

制度创新:粤港高新技术产业协同发展的新视角

高新技术产业的发展对整个经济增长模式和产业结构调整有深刻影响 ,广东和香港都面临产业结构升级的任务 ,需要协同发展高新科技产业。本文借鉴日本和中国台湾发展高新科技产业的经验 ,通过分析政府介入的理论依据和政府介入的边界 ,认为粤港高新科技产业的协同发展需要政府的适度介入 ,进行制度创新。最后运用制度经济学的方法 ,分析广东和香港的现实情况 ,提出两地制度安排的原则和粗略的框架。     

农产品品牌传播关键节点研究--基于青岛市农产品品牌触点管理的调研

褚橙、柳桃等品牌农产品的高调走红,吸引更多目光聚焦在农业这块“品牌荒地”,重新审视农产品品牌与消费者个性沟通体系的构建。基于品牌触点管理理论,结合青岛市农产品品牌触点管理的调研数据,文章指出产品、渠道、体验、品牌活动等触点是农产品品牌与消费者关系建立的关键点,是影响农产品品牌传播效果的重要元素。农产品品牌可强化产品整体概念,规范产品包装体系;甄选渠道,加大终端管理;深耕消费者体验,“定制”个性营销,以此提升品牌传播绩效。     

Joint GEEs for multivariate correlated data with incomplete binary outcomes

This study considers a fully-parametric but uncongenial multiple imputation (MI) inference to jointly analyze incomplete binary response variables observed in a correlated data settings. Multiple imputation model is specified as a fully-parametric model based on a multivariate extension of mixed-effects models. Dichotomized imputed datasets are then analyzed using joint GEE models where covariates are associated with the marginal mean of responses with response-specific regression coefficients and a Kronecker product is accommodated for cluster-specific correlation structure for a given response variable and correlation structure between multiple response variables. The validity of the proposed MI-based JGEE (MI-JGEE) approach is assessed through a Monte Carlo simulation study under different scenarios. The simulation results, which are evaluated in terms of bias, mean-squared error, and coverage rate, show that MI-JGEE has promising inferential properties even when the underlying multiple imputation is misspecified. Finally, Adolescent Alcohol Prevention Trial data are used for illustration.     

Development of sustainable platform for modular product family: a case study

Abstract

Defining product platform architecture is a critical issue to design and develop product variants. Different factors are highly dependent on the architecture type, such as number of variants, to measure modularity level, component commonality, market demand, etc. It is directly related to manage product portfolios and setting up business plan of a company. Before defining a product platform, whether it is modular or integral product designers need to follow specific design guidelines and checklists. This research mainly focuses on to define the platform architecture as well as provides necessary design guidelines and checklists for the product designers. It also highlights an example product of a case company with the objective to clarify/validate the proposed product design approach. In conclusion, this paper outlines the findings from this research and proposed some critical questions need to be answered within the scope of future research potentials.