新的f(R)黑洞

f（R）引力是一个直接拓展广义相对论的修正引力理论,它的拉格朗日量是一个仅含曲率标量R的任意函数f（R）.在F（r）=1+αr的条件下（F（r）≡（df（R（r）））/（dr）和αr是一个对广义相对论小的修正量）,导出了度规f（R）引力理论中场方程的精确球对称真空解.此外,考虑了这个黑洞背景时空中的标量场扰动.用六阶WKB （Wentzel-Kramers-Brillouin）方法,讨论了拟正则模和这个黑洞的参数之间的关系,得出这个黑洞是稳定的结论.     

中国发电产业发展有序性:基于省际布局和产业组织的实证研究

目前,中国电力产业已存在"弃风、弃光、弃水、弃核"的限电约束并出现火电"产能过剩"的超额供给现象;在供给侧结构性改革、新一轮电力体制改革和能源生产与消费革命的制度环境中和共同引导下,发电产业有序发展问题亟待解决.本文基于耗散结构理论,构建产业空间引力模型和产业系统熵值模型,选取2011-2016年统计数据,从省际布局和产业组织的角度,通过实证分析对中国发电产业有序发展进行研究,并分析其有序发展路径.研究结果表明:虽然目前中国发电产业发展仍处于无序状态,但中国发电产业将保持远离平衡的状态,供给侧部门发展也正朝向一个更高效、更稳定、更有序的状态演进.最后给出相应的政策建议.     

丰满新建重力坝基础 F67断层处理技术方案拟定研究

丰满水电站大坝全面治理工程中，新建重力坝坝址区右岸存在威胁坝体稳定和运行安全的F67断层，调查分析了部分已建工程处理基础断层所采用的技术措施，结合丰满新建大坝的工程及地质特点，对F67拟定了3种处理技术方案，经过计算分析和比较，最终确定采用断层部位开挖置换混凝土的方案处理F67断层。     

Ground demonstration system based on in-orbit assembly oriented manipulator flexible force control

To eliminate the load weight limit of carrier rockets and reduce the burden on support struc-tures,in-orbit assembly is a key technology to make design of scattering a large diameter telescope into submirror modules, which requires smooth operation of assembly robots, and flexible force con-trol technology is necessary.A ground demonstration system is presented for in-orbit assembly focu-sing on flexible force control.A six-dimensional force/torque sensor and its data acquisition system are used to compensate for gravity.For translation and rotation, an algorithm for flexible control is proposed.A ground transportation demonstration verifies accuracy and smoothness of flexible force control, and the transportation and assembly task is completed automatically.The proposed system is suitable for the development of in-orbit assembly robots.     

基于重心法和层次分析法的高校快递智能柜选址布局问题研究

针对高校快递智能柜选址问题，提出了重心法联合层次分析法的综合选址方法。该方法首先运用重心法确定智能快递柜的备选位置，再结合层次分析法从备选位置中确定最优选址。以广州某高校为例，对联合选址方法进行了实际应用。结果表明，该方法计算过程简便、实用，在校园自提柜选址决策方面有较高的科学性和可行性，可以为各大高校快递智能柜选址提供参考。     

基于社交网络签到数据的城市空间相互作用和节点吸引力研究

基于社交网络大数据的研究视角,选取全国348个城市之间一年的跨城市社交媒体地理位置签到数据,采取优化粒子群(PSO)方法,使用引力模型,逆向推导该系统中空间相互作用的距离衰减函数以及各城市的节点吸引力。通过引入经济发展水平、产业结构、人口规模和结构、旅游竞争力、教育水平5个方面的12项变量,经过因子分析和回归分析,探究这些变量对节点吸引力的影响作用。结果表明,社交媒体签到系统中的交互流量符合距离衰减的幂律函数,与其他交互系统相比,其距离衰减系数偏小,说明全国尺度的城市间人的移动受距离影响不明显。对全国城市节点吸引力及其排名的进一步分析发现,与旅游竞争力、城市发展成熟度、人口规模这几个维度相关的因子对社交媒体签到系统中的城市节点吸引力有显著的影响。研究结论将为更好地理解人类签到和移动行为,为进一步了解复杂网络系统中节点吸引力的内涵做出一定的理论和实际贡献。     

Unprincipled microgravity

I argue that the key principle of microgravity is what I have called elsewhere the Lorentzian strategy. This strategy may be seen as either a reverse-engineering approach or a descent with modification approach, but however one sees if the method works neither by attempting to propound a theory that is the quantum version of either an extant or generalized gravitation theory nor by attempting to propound a theory that is the final version of quantum mechanics and finding gravity within it. Instead the method works by beginning with what we are pretty sure is a good approximation to the low-energy limit of whatever the real microprocesses are that generate what we experience as gravitation. This method is powerful, fruitful, and not committed to principles for which we have, as yet, only scant evidence; the method begins with what we do know and teases out what we can know next. The principle is methodological, not ontological.     

蛟河舒兰井水温异常特征及映震分析

本文从吉林蛟河井与舒兰井井点位置和地震地质环境分析入手，对二处观测点资料异常可靠性进行评价。通过科学方法排除干扰，得出了基本的异常形态。对今后的观测水平提高和临震异常的扑捉有重要意义。     

Localization and the interface between quantum mechanics, quantum field theory and quantum gravity II: The search of the interface between QFT and QG

The main topics of this second part of a two-part essay are some consequences of the phenomenon of vacuum polarization as the most important physical manifestation of modular localization. Besides philosophically unexpected consequences, it has led to a new constructive “outside-inwards approach” in which the pointlike fields and the compactly localized operator algebras which they generate only appear from intersecting much simpler algebras localized in noncompact wedge regions whose generators have extremely mild almost free field behavior.Another consequence of vacuum polarization presented in this essay is the localization entropy near a causal horizon which follows a logarithmically modified area law in which a dimensionless area (the area divided by the square of dR where dR is the thickness of a light-sheet) appears. There are arguments that this logarithmically modified area law corresponds to the volume law of the standard heat bath thermal behavior. We also explain the symmetry enhancing effect of holographic projections onto the causal horizon of a region and show that the resulting infinite dimensional symmetry groups contain the Bondi–Metzner–Sachs group. This essay is the second part of a partitioned longer paper.     

水下核爆作用下混凝土重力坝模型破坏试验

采用落锤冲击模拟水下核爆的一次冲击波对混凝土重力坝的作用.试验遵循弹性-重力联合相似准则,并以冲量相似条件确定冲击摆的质量与悬挂高度.对两种坝体和坝基接触条件,即一种在平滑基底上筑坝,一种在锚固基底上筑坝,开展模型坝的冲击试验,得到模型坝体的动力特性.试验结果表明,坝体破坏模式包括贯穿性断裂、滑移、碎裂、层裂和抛掷等.并初步研究了核爆输入能量和大坝耗散能量之间的平衡关系.