Supervised local and non-local structure preserving projections with application to just-in-time learning for adaptive soft sensor

In soft sensor field, just-in-time learning(JITL) is an effective approach to model nonlinear and time varying processes. However, most similarity criterions in JITL are computed in the input space only while ignoring important output information, which may lead to inaccurate construction of relevant sample set. To solve this problem, we propose a novel supervised feature extraction method suitable for the regression problem called supervised local and non-local structure preserving projections(SLNSPP), in which both input and output information can be easily and effectively incorporated through a newly defined similarity index. The SLNSPP can not only retain the virtue of locality preserving projections but also prevent faraway points from nearing after projection,which endues SLNSPP with powerful discriminating ability. Such two good properties of SLNSPP are desirable for JITL as they are expected to enhance the accuracy of similar sample selection. Consequently, we present a SLNSPP-JITL framework for developing adaptive soft sensor, including a sparse learning strategy to limit the scale and update the frequency of database. Finally, two case studies are conducted with benchmark datasets to evaluate the performance of the proposed schemes. The results demonstrate the effectiveness of LNSPP and SLNSPP.

Non-Local Analysis of Forming Limits of Ductile Material Considering Void Growth

The current study performed a finite element analysis of the strain localization behavior of a voided ductile material using a non-local plasticity formulation in which the yield strength depends on both an equivalent plastic strain measurement (hardening parameter) and Laplacian equivalent. The introduction of gradient terms to the yield function was found to play an important role in simulating the strain localization behavior of the voided ductile material. The effect of the mesh size and characteristic length on the strain localization were also investigated. An FEM simulation based on the proposed non-local plasticity revealed that the load-strain curves of the voided ductile material subjected to plane strain tension converged to one curve, regardless of the mesh size. In addition, the results using non-local plasticity also exhibited that the dependence of the deformation behavior of the material on the mesh size was much less sensitive than that with classical local plasticity and could be successfully eliminated through the introduction of a large value for the characteristic length.

NON-LOCAL CONTINUUM MODEL AND ITS NUMERICAL SIMULATION FOR LOCALIZATION PROBLEM

A non-local continuum model for strain-softening simply takingplastic strain or damage vari- able as a non-local variable isderived by using the additive decomposition principle of finitedeformation gra- dient. At the same time, variational equations,their finite element formulations and numerical convolutedintegration algorithm of the model in current configuration usuallycalled co-moving coordinate system are given. stability andconvergence of the model are proven by means of the weak convergencetheorem of gen- eral function and the convoluted integration theory.

Study on the disaster caused by the linkage failure of the residual coal pillar and rock stratum during multiple coal seam mining:mechanism of progressive and dynamic failure

Multi-seam mining often leads to the retention of a significant number of coal pillars for purposes such as protection,safety,or water isolation.However,stress concentration beneath these residual coal pillars can significantly impact their strength and stability when mining below them,potentially leading to hydraulic support failure,surface subsidence,and rock bursting.To address this issue,the linkage between the failure and instability of residual coal pillars and rock strata during multi-seam mining is examined in this study.Key controls include residual pillar spalling,safety factor(f.),local mine stiffness(LMS),and the post-peak stiffness(k)of the residual coal pillar.Limits separating the two forms of failure,progressive versus dynamic,are defined.Progressive failure results at lower stresses when the coal pillar transitions from indefinitely stable(f,>1.5)to failing(f,<1.5)when the coal pillar can no longer remain stable for an extended duration,whereas sud-den(unstable)failure results when the strength of the pillar is further degraded and fails.The transition in mode of failure is defined by the LMS/k ratio.Failure transitions from quiescent to dynamic as LMS/k.<1,which can cause chain pillar instability propagating throughout the mine.This study provides theoretical guidance to define this limit to instability of residual coal pillars for multi-seam mining in similar mines.

地方红色档案资源的协同开发研究——以珠海市香洲区为例

该文结合珠海市香洲区红色档案资源共建共享现状的调研数据,利用协同治理理论分析协同开发的必要性及可行性,为地方红色档案资源的协同开发提供了一种多利益相关者合作的框架,尝试构建“多主体联动+协同机制”共建共享模式,从政策、技术、信息和管理等方面的协同,以档案行政管理部门为主导,建立红色档案资源体系、服务体系和安全体系为导向的共建共享模式,充分发挥社区、学校、企业、民间组织及公众等社会各方力量,保证多主体共同参与建设,节约工作成本,共同推进珠海市香洲区红色档案文献资源的共建共享工作。

Local and non-local sources of airborne particulate pollution at Beijing——The ratio of Mg/Al as an element tracer for estimating the contributions of mineral aerosols from outside Beijing

A new element tracer technique has firstly been established to estimate the contributions of mineral aerosols from both inside and outside Beijing. The ratio of Mg/Al in aerosol is a feasible element tracer to distinguish between the sources of inside and outside Beijing. Mineral aerosol, inorganic pollution aerosol mainly as sulfate and nitrate, and organic aerosol are the major components of airborne particulates in Beijing, of which mineral aerosol accounted for 32%―67% of total suspended particles (TSP), 10%―70% of fine particles (PM2.5), and as high as 74% and 90% of TSP and PM2.5, respectively, in dust storm. The sources from outside Beijing contributed 62% (38%―86%) of the total mineral aerosols in TSP, 69% (52%―90%) in PM10, and 76% (59%―93%) in PM2.5 in spring, and 69% (52%―83%), 79% (52%―93%), and 45% (7%―79%) in TSP, PM10, and PM2.5, respectively, in winter, while only ～20% in summer and autumn. The sources from outside Beijing contributed as high as 97% during dust storm and were the dominant source of airborne particulates in Beijing. The contributions from outside Beijing in spring and winter are higher than those in summer, indicating clearly that it was related to the various meteorological factors.

Malus’ Law Derived from Deterministic Particle Behavior

A polarized beam of energy is usually interpreted as a set of particles, all having the same polarization state. Difference in behavior between the one and the other particle is then explained by a number of counter-intuitive quantum mechanical concepts like probability distribution, superposition, entanglement and quantized spin. Alternatively, I propose that a polarized beam is composed of a set of particles with a cosine distribution of polarization angles within a polarization area. I show that Malus’ law for the intensity of a beam of polarized light can be derived in a straightforward manner from this distribution. I then show that none of the above-mentioned counter-intuitive concepts are necessary to explain particle behavior and that the ontology of particles, passing through a polarizer, can be easily and intuitively understood. I conclude by formulating some questions for follow-up research.

法治化背景下档案法规体系建设研究

档案法规体系建设是切实推进依法行政、依法治档、档案治理体系和治理能力现代化的重要抓手。新《中华人民共和国档案法》颁布施行标志着档案法规体系建设开启了新征程。现有档案法规体系存在地方性档案法规滞后于时代发展需求、档案行政执法程序规定存在大量空白、档案法规与刑事立法衔接不畅的缺陷,亟须在习近平法治思想的科学指引下,修订老旧地方性档案法规、推进档案行政执法程序法治化、完善档案法规与刑事立法衔接。

县城社区更新的在地性与联动性——以湖北公安县老城油江社区更新为例

当前,我国以县城为重要载体的城镇化建设提速,县城社区更新行动随之展开。县城社区更新有别于城市社区更新,具有多目标复合、问题导向复合、空间关系复合等特征。文章以湖北公安县老城油江社区更新为例,调研并梳理县城、社区两个层级更新需求的一致性和差异性,以在地和联动为目标,设定县城社区更新的整体策略和方法路径,提出“起、承、转、合”的整体更新思路和“5+X”社区在地更新模式,并在油江社区东侧片区展开实践;以期引发对县城社区更新的再思考,推动县城社区更新的理论与实践发展。

基于局域无线的轨道机器人灯光联动控制装置研发

为解决轨道机器人灯光控制装置不可靠的问题,研制了基于局域无线的轨道机器人灯光联动控制装置。变电站高压室的现场测试结果表明,基于局域无线的轨道机器人灯光联动控制装置可以随轨道机器人巡检联动照明,对变电站高压室灯光控制的准确率达100%。该装置联动可靠性高,可延长室内灯具使用寿命,提升变电站智能运维水平。

制造业创新与转型:深圳创客空间调查

创客(Maker)是近年来基于开源软硬件发展而兴起的新型制造业创新模式。实地考察了深圳"创客圈",详细描述了深圳"创客圈"的演变历程、主要活动空间的分工及联系,并论述了深圳创客空间与全球生产链及本地生产系统之间的联系机制。研究发现,创客模式将在知识分享、生产组织方式转型和人力资本优化3个方面对珠三角制造业升级产生积极影响,地方产业政策需要从优化创客模式的机制入手,改变传统产业扶持政策,实现基于创新的增长方式转型。

论产业群内地方联系的影响因素——以东莞电子信息产业群为例

在全球化背景下 ,很多国家和地区出现的具有竞争优势的产业群现象受到了区域研究学界、商界和公共政策决策者的重视。本文从产业联系的视角 ,首先分析自 2 0世纪 70年代后产业联系在内容及空间上的变化趋势 ,然后重点论述了在新时期的产业群内 ,影响企业地方联系强度的主要因素。在理论分析的基础上 。

西北地区汉族HLA-A ,B基因座单元型分析

目的 调查分析西北地区汉族人群中HLA A ,B基因座单元型频率。方法 采用PCR SSO反向斑点杂交技术对 87个家系 2 76名西北地区汉族个体HLA A ,B基因座进行检查 ,通过HLA以单元型遗传方式遗传的规律归结出单元型。结果 居单元型频率前三位的是A0 2 B4 6、A30 B13、A0 2 B4 0 ;具有明显连锁不平衡的单元型 11种。结论 西北地区汉族人群中HLA A ,B基因座单元型频率与国内其他地区汉族人群相比有其自身特点 ,A30 B13、A0 1 B37、A32 B4

无锡光伏产业链中的全球-本地联系

以无锡市为例,通过实地调研当地光伏产业链中多晶硅生产、电池元件生产、组件制造、相关设备生产、光伏设备运维服务,以及光伏用户等不同环节,从全球生产网络的视角,考察全球-本地联系在当地光伏产业链形成演化和技术发展动态中的具体表现。结论指出:(1)无锡光伏产业在短短10 a之内从"两头在外"的发展模式到形成全产业链竞争优势,体现了新兴技术的全球生产网络技术加速更新和产业快速转移的新特点;(2)本地相关产业集群通过技术引进、消化和改进为新技术突破规模化瓶颈,获取市场竞争力打下基础,并由此对全球光伏技术发展的路径产生了关键影响;(3)产业进一步发展需要针对能源转型的长期目标,着重探索能源消费侧的技术转型路径。

我国部分地方鸡种肤色伴性遗传初步观察

对泰和鸡、仙居鸡、固始鸡、北京油鸡、萧山鸡、狼山鸡（Ｎ系）进行肤色伴性遗传观察， 结果表明；泰和鸡常染色体上含有１对黑色素基因ＰＰ，仙居鸡、萧山鸡、北京油鸡性染色体上 含有Ｉｄ抑制色素基因，狼山鸡、固始鸡、泰和鸡性染色体上含有ｉｄ基因，泰和鸡与含有Ｉｄ基 因鸡种（仙居鸡、萧山鸡、北京油鸡）杂交，Ｆ１代肤色能自别雌雄，公鸡为黄皮肤，母鸡为黑皮 肤。

央地联动发挥新型举国体制优势开展关键核心技术攻关研究

新型举国体制把社会主义集中力量办大事的制度优势和超大规模的市场优势相结合,加快了关键核心技术的攻关和突破。通过深化科技体制改革理顺央地协同关系,采用央地联动的方式开展关键核心技术攻关,进一步丰富新型举国体制的内涵,有利于充分发挥市场在资源配置中的决定性作用。研究基于对央地联动相关实践和探索的深入分析,研究搭建起包含三个层级的央地联动开展关键核心技术攻关体系,针对央地联动过程中面临的问题和挑战,结合发达国家相关经验做法,研究出了继续深化科技体制改革、增加创新资源投入以及产业创新生态建设等政策建议。

论外部知识联系对发展中国家产业集群的重要性

产业集群的竞争优势存在不同的理论解释,现有产业集群研究理论主要集中于产业集群的内部联系研究,而忽视产业集群的外部联系研究。发展中国家的产业集群有自己的特征,外部知识联系具有非常重要的地位。全球生产网络为发达国家的产业集群建立外部知识联系提供了有利条件,这种外部联系和本地联系的互动有助于提高集群的竞争力。

AFLP技术及其在果树上的应用研究进展

AFLP(扩增片段长度多态性 )是一种新的DNA分子标记技术 ,对其基本原理和基本反应程序进行了简要介绍。并从果树遗传连锁图谱的构建、果树指纹图谱的建立和品种鉴定、果树种质资源遗传多样性和亲源关系的研究以及质量性状基因的分子标记等方面 ,概述了AFLP标记在果树上的应用进展 。

京津冀产业联动视角下河北省城市产业定位研究

本文在产业联动的视角下对京津冀的产业联动程度进行了测度,然后根据河北省各城市在强势联动产业上与京津的关联程度,对其产业发展进行了定位研究。

大学对所在城市和地方经济发展的关联作用研究

大学对所在城市和地方经济的发展产生了相当大的效应。除了大学通过投入品的支出对当地经济产生的后向关联效应外,大学的前向关联效应对于决定一个地方的经济发展可能具有更广泛的作用。本文首先分析了大学对区域和城市经济的两种效应,然后以美国128公路为例论述了大学对地方经济的巨大作用,在此基础上对中国的大学导向型城市的建设提出一些建议。