Restoration and Rebuilding of Forestry Ecological System in Heilongjiang Province

The study on restoration and rebuilding of forestry ecological system was conducted on Xianfeng Forestry Farm (N45° 03′, E129° 45′), in Yilan county, Heilongjiang province. One thousand hectare sample land was established. The research summarized the comprehensive technique measures: to managed virgin forests perfectly, to promote forest reforestation by artificial treatment, to restore the secondary forest with patch pattern; and to restorc and foster felling land on artificial forest by means of natural pattern or close hillside to facilitate afforestation. The results showed that forest ecosystem function and quality were restored and rebuilt during ten years by utilization of these technique measures.

Rebuilding of Traditional Riparian Spaces in Jiangnan:A Case Study of Conceptual Planning of Didang North Park in Shaoxing

Large-scale living spaces characterized with localization,nature,and vitality in Jiangnan area(Jiangnan refers to the southern regions of the Yangtze River) are gradually disappearing because of the extensive urbanization and modernization. In this paper,the suitable design method of riparian space is explored based on morphological features,composition principle,and spatial form of Jiangnan area,as well as the design philosophy of modern buildings. Besides,the conceptual planning of Didang Lake North Park in Shaoxing City is taken as a case study.

Rebuilding motor function of the spinal cord based on functional electrical stimulation

Rebuilding the damaged motor function caused by spinal cord injury is one of the most serious challenges in clinical neuroscience.The function of the neural pathway under the damaged sites can be rebuilt using functional electrical stimulation technology.In this study,the locations of motor function sites in the lumbosacral spinal cord were determined with functional electrical stimulation technology.A three-dimensional map of the lumbosacral spinal cord comprising the relationship between the motor function sites and the corresponding muscle was drawn.Based on the individual experimental parameters and normalized coordinates of the motor function sites,the motor function sites that control a certain muscle were calculated.Phasing pulse sequences were delivered to the determined motor function sites in the spinal cord and hip extension,hip flexion,ankle plantarflexion,and ankle dorsiflexion movements were successfully achieved.The results show that the map of the spinal cord motor function sites was valid.This map can provide guidance for the selection of electrical stimulation sites during the rebuilding of motor function after spinal cord injury.

Evaluation System for Farmers' Satisfaction Degree in the Green Energy Saving Rebuilding of Rural Residence

In view of the present situation of measuring a green residence just by energy saving and environmental protection,we propose that we should build the rural residence more from the farmer's view and set up an evaluation system based on farmers satisfaction.A total of 16 factors affecting the farmers' satisfaction degree of green energy saving rebuilding of rural residence are selected.Questionnaire survey on 110 peasant households is carried out under different situations in Guanzhong region in Shaanxi Province,so as to obtain the importance score of evaluation index.During constructing the evaluation system for farmers' satisfaction degree,Factor Analysis Method is used to classify the related influencing factors.Subjective analysis of Analytic Hierarchy Process and the objective analysis of Factor Analysis Method are combined together to determine the weights of factors at different grades.Then,the final evaluation model is obtained,which provides guidance for the further green energy saving rebuilding of rural residence in China.

A-B 7300 CNC Machine Tool Rebuilding

This paper describes A-B 7300 CNC machine tool rebuilding, mainly in PAL and AMP utilization of C-type software. It includes PAL program locating and analyzing, AMP capturing etc. After setting PAL and AMP, the greater part of the electrical rebuilding has been accomplished.

Seismic performance of buildings during 2011 Van earthquakes and rebuilding efforts

The October 23, 2011 M7.2 Tabanli - Van and November 9, 2011 M5.2 Edremit - Van earthquakes caused damage in a widespread area across the Van province in Turkey. The ground motions, the damage caused by these earthquakes and the recent progress related to recovery efforts are presented herein. First, the key properties of the recorded strong ground motions like spectral amplitudes and directionality are evaluated. The observed damage in the affected reinforced concrete and masonry structures are discussed. The set of common structural damage mechanisms （i.e., soft story failure, torsional response due to plan irregularity, short column failure, pull out failure, pounding） observed in the damaged buildings were identified. The relationship between the key structural properties and the extent of damage is investigated. The primary loss drivers across the region were identified to be the poor quality of workmanship and improper use of building materials. The results from the investigation suggest that a large portion of the loss could have been prevented if sufficient attention and care were given to the implementation of the design regulations and in particular to the construction practice. Lastly, the recent progress in the ongoing rebuildin~ activities is presented.

Influencing Factors and Path Choice of Rebuilding Rural Financial Supervision System

The necessity of rebuilding Chinese rural financial supervision system is expounded. Rebuilding rural financial supervision system is conducive to normalizing rural financial order and forming the benign competitive situation; to clarifying the role played by rural financial organization and providing better financial services for "three agriculture";to forming safe rural financial environment to promote the development of rural economy and national economy. The restricting factors of rebuilding Chinese rural financial supervision system are analyzed. The major reasons are that rural financial legislation is relatively backward and the supervision department lacks the necessary legal basis. The administrative supervision is insufficient, which lead to the mal-position, administrative offside and vacancy of rural financial supervision;rural financial organization mechanism is unreasonable and the internal supervision mechanism is relatively bad;supervision organization of rural financial industry is imperfect and the function is imperfect; public's supervision awareness is weak and social supervision mechanism develops slowly. The paths for rebuilding Chinese rural financial supervision system are put forward including accelerating rural financial legislation to provide perfect legal evidence for rural financial supervision system; clarifying the position on governmental functions and fully displaying the leading role of rural financial supervision; establishing specialized rural financial supervision organization to perfect its supervision functions; vigorously cultivating people's supervision awareness to promote the development of social supervision mechanism.

THOUGHTS ON CONSTRUCTING THE DEMONSTRATING AREAS OF THE ECOLOGICAL REBUILDING AND ECONOMIC SUSTAINABLE DEVELOPMENT IN HEXI REGION

Based on the field investigations, this paper analyzes systematically the achievements and problems of constructing the demonstrating areas of the ecological rebuilding and economic sustainable development in Hexi, Gansu Province, and then the thoughts on constructing the demonstrating areas are brought forward. It is considered that all kinds of ecological demonstrating areas should be merged in order to construct large scale characterized demonstrating areas which go beyond the district. In other words, in Hexi Region, Zhangye District should be constructed as the largest ecoagriculture demonstrating area of high technology; Wuwei District should be constructed as the largest ecological demonstrating area of agricultural comprehensive exploitation; JiuJia District, which is the shortened form of Jiuquan and Jiayuguan, should be constructed as the largest ecotourism demonstrating area; and Jinchang City should be constructed as the largest ecoindustry demonstrating area. At the same time, the constructing pattern should be selected according to the actual circumstances; science and technology should be applied to construct the demonstrating areas and accelerate the industrialization in the big market. Additionally, it is important to smooth the constructing system and implement the flexible and efficacious running mechanism, and it is suggested that the committee should be organized to administer the ecological demonstrating areas in Hexi Region.

近邻宜居行星巡天计划:利用空间天体测量法寻找下一个“地球”

近邻宜居行星巡天计划(Closeby Habitable Exoplanet Survey,CHES)采用空间微角秒级别的高精度天体测量技术,普查太阳系近邻(10 pc内)约100颗FGK等类型恒星,探测宜居带类地行星或超级地球;详细普查宜居行星的数目、真实质量和三维轨道等信息,这将是国际上首次近邻宜居带类地行星的空间探测任务.CHES的有效载荷是一台口径为1.2 m,视场为0.44°×0.44°,焦距为36 m的高像质、低畸变、高稳定光学望远镜,采用同轴三反TMA光学成像系统.为实现宜居带类地行星探测,CHES任务中的测量精度为1μas,是目前国际测量精度最高的空间探测项目.在空间科学先导专项背景型号项目的支持下,CHES团队深入凝练和论证科学目标,成功突破了三项关键技术难题:实现了畸变大视场高像质空间望远镜光学系统技术的重要突破;突破了10–5 pixel级别星间距测量技术;实现了卫星系统高稳定度姿态控制精度及热控精度的创新.CHES预计发现50颗类地行星,引领中国空间科学探测技术的跨越式发展.

Rebuilding from Ruins

LESS than a month after two deadly explosions ripped through a warehouse in the Binhai New Area of Tianjin, a municipality in north China, on August 12. schools in the area reopened on September 1.

全球信任赤字与重建信任的中国方案

信任是国际政治中各国关系保持稳定,促进国际合作,共同应对全球性问题的前提和基础。近年来,国际力量对比发生深刻变化,国际秩序、国际体系日益呈现不稳定性不确定性发展趋势,大国竞争加剧、世界经济增长乏力、全球性问题日益增多,全球信任日益被削弱,信任赤字成为当前国际社会需要共同应对的一个重要问题。信任赤字会破坏全球共识的达成,影响国际制度的运行以及各国的团结协作。作为负责任大国,中国一直致力于为共同应对全球性挑战、增进国际社会团结互信贡献中国智慧和中国方案。未来,中国可以在理念、方案和行动等方面继续发挥作用,推动各国树立对未来发展和前进目标的信心,树立对共同应对全球性挑战的信心,树立对大国关系以及对全球共同发展和共同迈向现代化的信心,推动世界走向和平、安全、繁荣、进步的光明前景。

废旧设备升级改造构建垃圾渗滤液处理装置研究

基于高校实验室设备老化闲置问题,本项目充分利用废旧设备,通过升级改造构建了一套垃圾渗滤液处理装置。在改造过程中,运用了先进的水处理技术和方法,使这些老旧设备物尽其用。本项目不仅适用于垃圾渗滤液处理,对其他类型的废水处理也具有一定的借鉴意义。

美国冻结和处分俄罗斯主权资产的法律路径与挑战

俄乌冲突已持续两年,美国及其欧洲盟友提供的外国援助是乌克兰获得财政资源的最直接的方式。随着对乌援助在国内外面临的经济压力和政治压力不断增大,美国政府不得不开始寻找新的资金来源。拉拢盟友一起冻结和处分俄罗斯的海外主权资产,将之用于协助乌克兰应对冲突和战后重建,成为美国当前最为中意的方案。美国的决策者正在积极研究论证实施该方案的现有法律和政策路径,试图从法理、国内法、司法判例和国际法中发掘充分的法律依据,甚至酝酿推出转移俄罗斯海外主权资产的强制性法案,意图以所谓的“合法手段”达成目的。美国此举的本质是以法律战打经济战,将冻结和处分外国主权资产的手段合法化、正当化,这不仅会伤害美国的软实力,受到国际社会的广泛质疑,还会对解决俄乌冲突带来不利影响。

基于融合特征分布学习与图像重建的异常检测

无监督学习是当前工业产品缺陷检测领域的主流研究方向,目前主要分为基于重建和基于特征的两类方法。前者构建基于内容感知的映射以将异常区域映射为正常区域并通过残差图像来检测缺陷,注重于图像整体的表现。后者利用高层语义特征以实现定位异常,更加注重图像细节呈现。根据两种方法的优缺点,本文提出一种基于特征与重建融合的方法,有效结合两者优点互补其不足并实现统一的端到端的学习与推理。首先训练一个重建模型,然后采用归一化流模型以充分学习输入正常样本的高可能性数据概率分布,使其与重建模型相融合,有效地提高重建模型缺陷检测以及缺陷定位的准确率。在广泛使用的MVTec AD数据集上,提出的融合模型的平均图像级AUROC达到了98.7%,平均像素级AUROC达到了94.2%,特别地,相比单一重建模型提升了3.3%。提出的特征与重建网络融合模型显著提高了重建网络部分对于缺陷定位的不足,使结果更为精确。

“附近”视域下城市书房建设创新路径——以武汉市为例

[目的/意义]聚焦“附近”视域下城市书房建设实践,结合用户需求,讨论城市书房建设方向,助益城市书房可持续发展。[研究设计/方法]引入人类学家项飙提出的“附近”概念,总结城市文化生活面临的困境,提出城市书房建设需要关注的用户需求,讨论武汉城市书房创新路径。[结论/发现]城市书房建设需要关注用户可知感、生态性、参与感需求,以鲜明特色主题增强书房辨识度,通过构建活动场景,强化沉浸式体验,以集聚趣缘群体的方式提升用户粘性,并吸纳社会力量撬动各类资源投入,从而促进城市书房可持续发展。[创新/价值]将社会学“附近”概念引入图书馆界,从城市书房用户需求视角,以武汉市创新实践为例,为城市书房建设提供建议。

土地流转、农户创业和农村劳动力就近转移

推进农村劳动力就近转移能够在保障农民工群体就业、促进经济发展的基础上,有效缓解异地转移给农村带来的负面影响。为厘清土地流转对于农村劳动力就近转移的影响机制,基于2016、2018和2020年3期中国家庭追踪调查数据(CFPS),采用Tobit模型、倾向得分匹配法(PSM)、中介效应和调节效应模型探讨土地流转对农村劳动力就近转移的影响机制,研究表明:土地流转能够显著促进农村劳动力就近转移,该结果经过数据缩尾、替换变量、筛选样本的稳健性检验和消除自选择引起的内生性偏误后依旧保持可靠;农户创业在土地流转对农村劳动力就近转移影响的过程中起到了部分中介效应,发挥了“创业带动就业”的作用;农户人情支出对土地流转对农村劳动力就近转移的作用路径起到显著正向调节作用。因此,应当健全农村土地流转制度,鼓励和扶持农户就近创新创业,正向引导农村社会关系网络并且完善农村正规市场建设。

“就矿找矿”在武当—桐柏—大别成矿带找矿实践中的启示与作用

“就矿找矿”作为找矿勘查工作的一种实用性方法,从概念的提出到现在已有近百年的历史,朱训同志将其上升到理论层面也已40余年了,并在中国找矿实践中得到了广泛应用和发展。多角度论述了“就矿找矿”理论在武当—桐柏—大别成矿带设想动议、立项建议、立项论证、规划部署、组织实施、找矿历程、重要成果等全过程中的启示与作用,并指出“就矿找矿”理论的作用将在新一轮找矿突破战略行动中得到进一步彰显。

A区块砂泥岩薄互层气藏改建储气库的可行性研究

随着大庆油田原油、伴生气产量逐年递减,冬夏季供气不平衡的矛盾日益突出,在无法满足季节调峰需求时,需压减工业用气。因此,从满足冬季下游用户的用气需求、合理利用有限的油气资源和保护环境等角度出发,建设储气库势在必行。根据大庆油田库址筛选标准,优选出A区块进行库址规划,与大庆油田已建储气库相配合,联合保障大庆及周边地区用气季节调峰。A区块属于砂泥岩薄互层气藏,从地质特征、气藏开采特征等方面分析改建储气库的可行性,详细评价建库的地质条件和气藏条件,并设计库容参数和两套井位部署方案,建立数值模型进行优选对比。结果表明,A区块砂泥岩薄互层气藏具备建库的可行性。

老旧酒店建筑改建风险管理研究

酒店作为公共建筑,一旦发生安全事故很有可能造成重大的人员伤亡和财产损失。安全事故种类众多,本文选取坍塌、火灾两个可能造成大规模人员伤亡的事故类型进行分析。本文通过事故树分析法分析事故原因,结合经验和相关材料列出了28个基本事件,通过计算结构重要度系数,将28个基本事件对顶上事件的影响程度分为9类,并结合最小割集、最小径集、结构重要度系数给出了相应的措施及建议。

择校学生能否影响非择校生的学业表现?——来自随机分班数据的经验证据

文章使用中国教育追踪调查基线数据(2013—2014学年)中的随机分班样本,详细讨论了班级择校学生比例与非择校生学业发展之间的关系。结果显示,班级择校学生比例增加将直接降低非择校生工作日和周末的学业投入水平,进而引发非择校生学业成绩的下降。异质性分析表明,首先,班级择校学生比例增加主要降低非择校生的英语成绩;其次,班级择校学生比例增加主要降低男性非择校生的学业成绩;再次,择校学生与非择校生相处时间越长,择校学生对非择校生学业发展的阻碍作用将愈加明显;最后,与“以房择校”相比,班级内通过“权钱并施”方式就读的学生比例增加更不利于非择校生的学业发展。文章由择校的同伴效应视角切入,为贯彻落实义务教育阶段“就近入学”政策提供新的经验证据。