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杨梅果实的力学特性及其贮藏过程中变化规律的研究 总被引：5，自引：0，他引：5
果实的力学特性是设计收获、分级和加工系统的重要理论依据之一，本文主要对不同成熟度的杨梅果实的力学特性及其在贮藏过程的变化规律进行了试验研究，并借用弹塑性力学的赫芝理论对果实的力－变化关系进行了理论分析与试验验证，最后还建立了贮藏过程中屈服力随贮藏时间变化的不同阶段的回归方程，可用于预测在相应贮藏条件下的杨梅果实的屈应力，为改善杨梅果实的贮运质量提供理论参考。 相似文献
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为对肉品的风味进行分类检测,采用电子鼻对具有不同脂肪和蛋白质含量配比的肉品进行检测,基于电子鼻的响应曲线提取特征值并基于LDA线性判别法对特征值进行筛选,使用BP神经网络对筛选后的特征值进行分类检测;实验表明电子鼻响应数据与肉品的蛋白质和脂肪含量之间具有高度的相关性,电子鼻能够对不同风味的肉品进行分类检测。 相似文献
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科技文献作为研究所必需的计量分析数据,决定了将不同类型和来源的科技文献进行信息融合,能够最大程度地发挥信息的价值。本文基于论文和专利数据以及行业信息等不同维度信息的关联关系,构建基础理论研究水平、科技成果产出情况和市场前景等信息的融合分析框架,运用"四象限分析法"创新性地构建了"理论—技术—市场"的三维评价模型,提出了更加深入判断新兴技术成熟度的分析方法。并以智能建筑领域核心技术为例,对方法的可行性和有效性进行验证。该方法立足技术领域全景,集成论文、专利数据以及行业信息,将技术成熟度的局部特征融合为整体特征,可通过多维分析结果的相互印证、相互补充获得更具参考价值的技术成熟度分析结果。 相似文献
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消费者成熟度是消费者在消费决策过程中,能够做出使自身满意的决策的综合能力程度。根据消费者学习行为的分析发现,消费者成熟度呈现为动态演变的过程,因此,企业应关注消费者成熟度演变及与产品生命周期不同阶段的动态匹配问题。同时,基于产品生命周期不同阶段的消费者成熟度差异,必须对营销策略进行针对性的具体设计,以期为企业维持消费者满意度和忠诚度以及营销管理工作提供方向。 相似文献
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基于电子鼻技术的番茄苗早疫病病害快速检测研究 总被引：2，自引：0，他引：2
病害是造成番茄减产的主要因素之一。传统上对番茄苗病害进行预测主要是人为观察法,但这种方法由于自身的缺陷带有一定的局限性,如经验预测人为因素明显,预测准确率低。本文利用电子鼻系统对感染早疫病病害的番茄苗进行研究,通过主成分分析、线性判别分析对每株番茄苗接种1叶片、2叶片、4叶片和对照组四种不同处理的早疫病病害番茄苗进行分析,结果表明主成分分析各处理样本间均有重叠,区分效果不理想,线性判别分析各处理样本基本可以分开;用逐步判别分析和BP神经网络对各处理样本进行判别,测试集的准确率分别为50%和87.5%,神经网络模型的预测结果更好。 相似文献
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本文简单介绍了电子鼻的结构及原理,并对电子鼻在近年来食品检测中的应用研究进行了阐述,重点介绍了它在谷物、肉品、乳品、果蔬检测中的应用,并对其应用前景进行了展望。 相似文献
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《International Journal of Information Management》2017,37(4):297-312
Utilizing the Technology-Organization-Environment (TOE) theory and the literature on citizen engagement, we formulated a multiple-mediation model examining (1) the TOE contextual factors affecting government’s willingness to implement electronic participation (e-participation) in form of e-information sharing, e-consultation, and e-decision-making in a country and its electronic government (e-government) maturity; and (2) the mediating role of government’s willingness to implement e-participation in a country on the relationships between its TOE contextual factors and e-government maturity. Specifically, we hypothesized that information and communication technology (ICT) infrastructure (representing the Technology context), governance (representing the Organization context), and human capital (representing the Environment context) has both direct and indirect relationships with e-government maturity through the mediating roles of government’s willingness to implement e-participation. Based on archival data from 183 countries, results showed that while ICT infrastructure and human capital were positively associated with government’s willingness to implement e-participation and e-government maturity, governance was not significantly associated with them. Also, government’s willingness to implement e-participation had significant associations with its e-government maturity. Specifically, of three dimensions of e-participation, government’s willingness to implement e-information sharing and e-decision-making were positively associated with e-government maturity, and its willingness to implement e-consultation was negatively associated. Further, government’s willingness to implement e-information sharing, e-consultation, and e-decision-making partially mediated the influences of ICT infrastructure and human capital on e-government maturity. Results also indicated that the relationship of governance with e-government maturity was not mediated by government’s willingness to implement e-participation. Findings contribute to the theoretical discourse on e-government by highlighting the roles of the TOE contextual factors on government’s willingness to implement e-participation and e-government maturity, and provide indications for practice in managing e-government maturity by (1) enhancing government’s willingness to implement appropriate e-participation dimensions; and (2) leveraging the effects of the TOE contextual factors on government’s willingness to implement e-participation and e-government maturity. 相似文献
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In the last five decades, maturity models have been introduced as reference frameworks for Information System (IS) management in organizations within different industries. In the healthcare domain, maturity models have also been used to address a wide variety of challenges and the high demand for hospital IS (HIS) implementations. The increasing volume of data, is exceeded the ability of health organizations to process it for improving clinical and financial efficiencies and quality of care. It is believed that careful and attentive use of Data Analytics in healthcare can transform data into knowledge that can improve patient outcomes and operational efficiency. A maturity model in this conjuncture, is a way of identifying strengths and weaknesses of the HIS maturity and thus, find a way for improvement and evolution. This paper presents a proposal to measure Hospitals Information Systems maturity with regard to Data Analytics. The outcome of this paper is a maturity model, which includes six stages of HIS growth and maturity progression. 相似文献
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Corruption has emerged as a well-debated subject against the backdrop of electronic government (e-government). While e-government has attained a level of sophistication in leading countries, there are countries for which going digital remains comparatively new on their national schedules. Their struggle and lag in reaching maturity in e-government can be attributed to corruption, which is an infamous issue prevalent across the globe and argued to impede technological innovation. Despite such a possibility, there is a paucity of research examining the “corruption–e-government” linkage. This study, hence, adopts the institutional perspective for conceptualizing corruption and seeks to understand the relationship of corruption in basic national institutions and national stakeholder service systems with e-government maturity. Specifically, by grounding the discussion on the agency theory, the rent-seeking theory, and the perspective of institutions as structures of cooperation and power, this study analyses the moderating influence of corruption in a national stakeholder service system (i.e., business systems) on the relationship of corruption in three basic national institutions (i.e., political, legal, and media) with e-government maturity in a country. The hypothesized relationships are empirically validated using a panel data of 94 countries, and the findings confirm that political corruption, legal corruption, and business-systems corruption in a country play vital roles in influencing its e-government maturity. Implications of our results to research and practice are discussed. 相似文献
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A company’s digitalisation journey spans multiple dimensions and processes. However, studies of digital maturity have focused only on certain parts of the process. This study presents a method capable of fully capturing a company’s level of digital maturity. A DP2 indicator of digital maturity was constructed. This indicator is based on responses to a company survey of digitalisation in different business areas and processes. Companies with the highest degree of digitalisation are the oldest and largest (most employees). Differences between companies and sectors can be explained by the level of digitalisation in terms of digital management intensity, departmental agility and digital orientation. 相似文献
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银行间债券市场与交易所债券市场之间的国债价格差异研究 总被引：1，自引：0，他引：1
引入虚拟变量建构计量模型研究了我国银行间债券市场与交易所债券市场之间的国债价格差异。主要发现:在其他情况不变的条件下,在不同的债券市场交易对国债的无风险收益率有显著影响;流动性变量对到期收益率具有很好的解释能力,两类市场对流动性风险的补偿系数存在显著差异。 相似文献
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判断一个工作理论成熟与否,除了考察其理论体系的完整性,还应考察其实践的真理性和历史阶段的同质性。中国共产党的思想政治工作包含了党在革命和建设这两个性质截然不同的历史阶段中的思想政治工作,其理论成熟也是分阶段的和相对的,不能简单地说其中一个阶段某个时期的思想政治工作代表了整个历史时期思想政治工作的理论成熟。笔者在现有相关研究的基础上,试将中国共产党思想政治工作的理论成熟分为两个阶段来讨论。 相似文献
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基于成熟度的科研项目管理评测及改进研究 总被引：3，自引：0，他引：3
摘要：通过对科研项目过程的管理和控制,有利于将研究者的科研能力最终转化成实际成果,而对科研项目管理成熟度的测评则是提高科研项目管理水平的有效措施。本文改进了作者先前提出的科研项目管理成熟度的定义及相应的评测指标体系、成熟度等级模型,在建立评测结果与科研项目管理成熟度等级的对应关系后,提出了持续改进科研项目管理成熟度等级的方法。算例结果说明本文提出的方法可以较好地实现科研项目管理能力评测工作,帮助组织找出影响科研项目管理能力的瓶颈因素,提升组织的科研管理能力。 相似文献
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技术就绪度评价是在国内外重大科研项目中广泛应用的技术成熟度评价方法,是通过将技术成熟过程量化,判断技术所处的阶段和一般可用程度,用以指导技术发展下一阶段的工作。我国国家水专项在"十一五"以来已研发产出600多项新技术,根据水专项技术不同特点,将其分为治理类技术、管理类技术、产品装备和平台类技术,根据不同类型技术的研发过程和特点,分别提出三类技术的9级就绪度定义及评价准则;同时,基于对水专项技术层级的分析,将其划分为单项技术、集成技术与成套技术,单项技术成熟度按就绪度评价准则直接评价,集成与成套技术成熟度按系统成熟度矩阵计算法评价。 相似文献
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本文主要介绍了在《模拟电子技术基础》课程教学中应用EWB(虚拟电子工作台)进行模拟实验的方法和一些实例。通过这些倒子,我们可以看到EWB在《模拟电子技术基础》课程教学中的广阔前景,其方便的更改电路和元件参数的能力,使我们得以很好的了解电子电路的各种性质。这不失为一种很好的理论联系实际的教学方法．也是一种对学生实际能力培养的有效工具,利用计算机的电子设计自动化(EDA)应是电子技术教学今后的发展方向。 相似文献