摘要：Fingers are the basic components of anthropomorphic *** present,most anthropomorphic fingers utilize rigid joints,which have obvious fabrication and assembly complexities as well as limited flexibility and ***,some anthropomorphic fingers were attempted to utilize compliant joints learned from bioinspiration,but they have a limited self-resetting ability and lateral deformation resistance,as well as occupying a large space and having a non-anthropomorphic *** this paper,nine compliant joints for anthropomorphic fingers were analyzed using Finite Element Analysis(FEA),based on which two combined compliant joints were proposed,and the optimal one was obtained through FEA and *** anthropomorphic finger that embeds parts of the compliant joint into the adjacent phalanxes was then ***,the anthropomorphic finger was fabricated and experiments were *** results show that the anthropomorphic finger with the proposed combined compliant joints has a better self-resetting ability and lateral deformation resistance while ensuring a large range of motion similar to that of the human finger,and the required actuating force is ***,the embedded joint structure can reduce the occupied space of the joint so as to improve the anthropomorphic appearance of the finger,and enhance its lateral deformation resistance.

摘要：Porous g-C_(3)N_(4)nanosheets(PCN)were prepared by the nickel-assisted one-step thermal polymerization ***(H2)which was produced by the reaction between nickel(Ni)foam and ammonia(NH3)defined the structure and properties of *** the formation of PCN,the participation of H2 not only enhanced the spacing between layers but also boosted the specific surface area that more active sites were ***,H2 promoted pores formation in the nanosheets,which was beneficial to the transfer of photons through lamellar structure and improved the absorption efficiency of visible ***,the obtained PCN possessed better Cr(Ⅵ)photocatalytic reduction efficiency than pure g-C_(3)N_(4).The reaction rate constant(k)of PCN(0.013 min-1)was approximately twice that of bare g-C_(3)N_(4)(0.007 min-1).Furthermore,the effects of original pH and concentration of Cr(Ⅵ)-containing solution on re moval efficiency of Cr(Ⅵ)were explored.A possible photocatalytic mecha nism was proposed based on the experiments of radical scavengers and photoelectrochemical characterizations.

摘要：This paper presents a novel formulation for detecting objects with articulated rigid bodies from highresolution monitoring images, particularly engineering vehicles. There are many pixels in high-resolution monitoring images, and most of them represent the background. Our method first detects ob ject patches from monitoring images using a coarse detection process. In this phase, we build a descriptor based on histograms of oriented gradient, which contain color frequency information. Then we use a linear support vector machine to rapidly detect many image patches that may contain ob ject parts, with a low false negative rate and a high false positive rate. In the second phase, we apply a refinement classification to determine the patches that actually contain ob jects. In this stage, we increase the size of the image patches so that they include the complete ob ject using models of the ob ject *** an accelerated and improved salient mask is used to improve the performance of the dense scale-invariant feature transform descriptor. The detection process returns the absolute position of positive ob jects in the original images. We have applied our methods to three datasets to demonstrate their effectiveness.

摘要：A compact multi-throttle aerostatic guideway is the preferred structure for high precision and acceleration motion in the variable-slit system(VS)of *** presence of microstructure,such as recesses and grooves,on the guideway working surface has been found to improve the loading ***,the effects on the guideway performance of changing the microstructure on the micron level are not yet *** mesh adaptation method,which was proposed by the authors,is employed in this paper to quantitatively study the influences of four microstructure *** effect of tuning these parameters on the loading performance is *** level of impact determines the proposed design process of the *** characteristic feature of the proposed design process is that the working points of carrying capacity,stiffness,and rotational stiffness are unified under twoway adjusting by means of recess *** to the proposed design process and tuning method,the restriction of supply pressure is lifted to a certain extent and the mutual tradeoff among the loading performances is *** experimental results show that the rotational stiffness of the designed guideway,based on the tuned parameters,reached 2.14×10^(4) Nmrad1 and increased by 69.8%.In a scanning test of the applied VS on argon fluoride laser(ArF)photolithography,the average scanning acceleration reached 67.5 m·s^(-2),meeting the design specification.

摘要：This study develops a multivariate eco-hydrological risk-assessment framework based on the multivari-ate copula method in order to evaluate the occurrence of extreme eco-hydrological events for the Xiangxi River within the Three Gorges Reservoir （TGR） area in China. Parameter uncertainties in marginal distri-butions and dependence structure are quantified by a Markov chain Monte Carlo （MCMC） algorithm. Uncertainties in the joint return periods are evaluated based on the posterior distributions. The proba- bilistic features of bivariate and multivariate hydrological risk are also characterized. The results show that the obtained predictive intervals bracketed the observations well, especially for flood duration. The uncertainty for the joint return period in ＂AND＂ case increases with an increase in the return period for univariate flood variables. Furthermore, a low design discharge and high service time may lead to high bivariate hydrological risk with great uncertainty.

摘要：日本现代玩具产业较为成熟,其中颇具代表性的潮流玩具是SOFUBI玩具。其始于昭和时代末期,多为乙烯基软胶制成。早期SOFUBI玩具多为特摄怪兽电影的周边产品,20世纪90年代起,日本艺术家、漫画家及插画师开始利用乙烯基软胶设计制作玩具,为SOFUBI玩具注入当代潮流文化的生命力。值得注意的是,SOFUBI玩具虽为现代工业产品,但造型设计却呈现出日本民俗美学趣味。其借鉴日本民间玩具造型理念,改变特摄电影中怪兽恐怖骇人的面貌,使其亲切可爱。在国际主流玩具设计领域,呈现独树一帜的造型风格。

摘要：在党的百年教育史上，延安时期是学校劳动教育发展的关键时期。从空间与身体互动关系视角看，延安时期学校劳动教育历经具身性劳动空间的初创阶段(1935-1938年)、离身性教育空间与具身性劳动空间的脱离阶段(1939-1942年)及具身性劳动教育空间的建构阶段(1943-1948年)。这一历程在空间类型、空间中的身体、空间价值三个方面，分别体现出由单一空间向复杂空间拓展、由物质身体的充分锻炼转向物质与精神身体的协调发展、由工具价值的突出转向教育与工具价值的融合的内在逻辑。延安时期的学校劳动教育，坚持马克思主义教劳结合思想中国化的正确方向，重视劳动实践中空间与身体的互动联系，重视学校、家庭、社会等劳动教育空间的协同效应，开创了具有中国特色的学校劳动育人新局面。

摘要：To search for potent anti-ischemic stroke agents,a series of tetramethylpyrazine(TMP)/resveratrol(RES)hybrids 6 a-t were designed and *** hybrids inhibited adenosine diphosphate(ADP)-or arachidonic acid(AA)-induced platelet aggregation,among them,6 d,6 g-i,6 o and 6 q were more active than *** most active compound 6 h exhibited more potent antiplatelet aggregation activity than TMP,RES,as well as positive control ticlopidine(Ticlid)and aspirin(ASP).Furthermore,6 h exerted strong antioxidative activity in a dose-dependent manner in rat pheochromocytoma PC12 cells which were treated with hydrogen peroxide(H2 O2)or hydroxyl radical(·OH).Importantly,6 h significantly protected primary neuronal cells suffered from oxygen-glucose deprivation/reoxygenation(OGD/R)injury,comparable to an anti-ischemic drug edaravone(Eda).Together,our findings suggest that 6 h may be a promising candidate warranting further investigation for the intervention of ischemic stroke.

摘要：在密集波分复用系统中使用窄带滤光片进行工艺调试时,需要对单层薄膜的厚度、厚度分布以及残余应力等参数进行测量。针对当前需采用多个系统测量时的复杂性及重复定位而引入误差的问题,设计了一种基于椭偏光谱和光杠杆法的薄膜厚度及曲率测量系统。该系统在椭偏光谱测量的基础上引入光杠杆法,成功地在一个集成设备上实现了对上述多种参数的精确测量。实验结果表明:与RC2型椭偏仪、ZYGO激光干涉仪测量结果相比,所设计的测量系统测得的薄膜厚度偏差小于0.21%,厚度分布偏差值小于0.025%,曲率和残余应力偏差均在±1°以内,系统能够统满足实际的测量需求。

摘要：The effect of Mo on nano-scaled particles,prior austenite grains and impact toughness of coarse-grained heat-affected zone(CGHAZ)in offshore engineering steels with Ca deoxidation was *** heat-affected zone(HAZ)toughness of Mo16 steel is obviously higher than that of Mo8 steel at all the heat inputs of 50,100,150 and 200 kJ/cm,with HAZ toughness of both steels decreased with increasing the welding heat *** the Mo content is increased from 0.08 to 0.16%,the size of nano-scaled particles in HAZ is decreased from 18 to 15 nm,and their number density is increased from 0.7 to 0.9μm^(−2).Thus,the Zener pinning force is increased,and the prior austenite grain size(PAGS)is decreased,leading to the improved HAZ *** characterizations show that the nano-scaled particles in both steels are Ti(C,N)with the solute elements of Nb and *** calculated critical particle size of TiN is 10.2 and 8.4 nm in Mo8 and Mo16 steels at 1350℃,and the particles larger than the critical size are stable during the welding *** the Zener pinning force calculation,Ti(C,N)particles play the more important role in the pinning effect on the prior austenite grain *** on the regression analysis by the MATLAB results,the predicted values of PAGS at different heat inputs are well fitted with the experimental data.