集装箱码头海侧作业资源配置的仿真优化

航道、泊位、岸桥是集装箱码头海侧重要的作业资源,直接影响着码头作业效率。针对单向航道的集装箱码头海侧资源配置优化问题,以航道、泊位和岸桥的集成调度计划为仿真逻辑,以船舶在港总时间和泊位利用率为评价指标,以海侧的船舶作业和进出港流程为仿真流程,构建了集装箱码头海侧作业资源配置的仿真模型。实验结果表明,从提高集装箱码头服务效率角度出发,恰当的航道通航时段数量和合理的泊位长度的组合配置方案效果更好。

岸边集装箱起重机放倒式海侧梯形架制作及安装工艺

为保证岸边集装箱起重机放倒式海侧梯形架在安装及放倒操作时顺利实施,对海侧梯形架及相关部件在制作和加工工艺上进行了梳理,从海侧上横梁的支座安装及加工、梯形架下端轴套的安装及加工,以及各相关轴孔的划线加工等方面,提出了控制要求,可保证各部件的尺寸精度,提高海侧梯形架等部件安装后的质量。

自动化集装箱码头海陆侧交换区设计简析

在全球集装箱运输业迅猛发展的形势下,"五型新港口"即自动化集装箱码头应运而生。本文基于目前国内外自动化集装箱码头装卸工艺系统发展概况,重点对自动化集装箱码头海陆侧交换区布置方案进行深入研究和探讨,研究成果可为类似的集装箱码头规划设计提供借鉴及参考。

AGV海侧支架充电方式下充耗电量分析

随着国内自动化码头建设的与日俱增，自动化码头典型设备AGV的充电方式是保证自动化码头运作顺利进行的关键问题。本文以青岛港自动化码头采用的AGV海侧支架充电方式为研究对象，研究理论与仿真假设，计算该方式下的AGV充电量和耗电量，通过对比计算，得出必须适当延长等待时间才能保证充耗电量的均衡，并验证这种等待延长对生产效率的影响。结果表明，这种延长满足仿真条件下的AGV等待，即不会对效率产生影响。

应综合开发利用海岸带资源

海岸带是海陆的过渡带,包括从海岸的陆侧和海侧延伸的两个方面,它在潮流和河流的冲击作用下,可形成大面积的海涂,是极其宝贵的国土资源。海岸带由于物产丰富,向被誉为“天富之地”、“黄金地带”。因此,确定开发海岸带的指导思想,加强对海岸带的综合开发、合理利用的研究,提高海岸带的科学管理水平,是加速工农业生产发展的一项战略措施。

自动化集装箱堆场及道路铺面结构设计

自动化集装箱堆场及道路铺面结构设计是自动化码头的重要组成部分,要充分发挥全自动化系统的技术优势,保证整个系统的安全可靠运行,采用合理的、与自动化工艺系统相适应的堆场铺面结构非常关键。本文根据自动化集装箱堆场各功能分区的特点提出合理的铺面结构设计方案,尤其针对海/陆侧交换区无人操作自动导引车(AGV)磁钉定位的特殊要求,对铺面结构进行优化设计,解决了混凝土大板结构钢筋对磁钉的干扰问题,既完美满足了工程的功能要求又节省了成本。

Environmental cues associated with morphine modulate release of glutamate and γ-aminobutyric acid in ventral subiculum

Objective To investigate whether environmental cues associated with different properties of morphine could regulate the extracellular levels of glutamate and y-aminobutyric acid （GABA） in the hippocampal ventral subiculum, which play a critical role in the reinstatement of drug-seeking behavior induced by environmental cues. Methods Conditioning place preference （CPP） and conditioning place aversion （CPA） models were used to establish environment associated with rewarding and aversive properties of morphine respectively. Microdialysis and high performance liquid chromatography were used to measure the extracelluar level of glutamate and GABA in the ventral subiculum under these environmental cues. Results Exposure to the environmental cues associated with rewarding properties of morphine resulted in a decrease （approximately 11%） of extracellular level of GABA in ventral subiculum, and exposure to the environmental cues associated with aversive properties of morphine resulted in an increase （approximately 230%） of extracellular level of glutamate in ventral subiculum. Conclusion Environmental cues associated with different properties of morphine modulate the release of distinct neurotransmitters in the hippocampal ventral subiculum possibly through different neural circuit.

单箱梁托架小车缠绕系统的创新与优化

为适应单箱梁岸边集装箱起重机大梁由双铰点向单铰点的推广要求,通过缠绕形式的改进,尾部张紧装置和海、陆侧托架小车的设计优化,岸边集装箱起重机单箱梁托架小车缠绕系统取得了良好的减重效果,制作工艺性大大提高,并节约了配套件如钢丝绳、滑轮的使用数量,实现了降本增效。通过对现有缠绕形式的简化和张紧装置、海侧和陆侧托架小车的优化设计,树立了单箱梁岸边集装箱起重机托架小车缠绕系统的新标准和发展方向,具有极大的推广应用价值。

Effect of chloride salt concentration on unconfined compression strength of cement-treated Lianyungang soft marine clay

This study aims to quantify the influence of the amount of cement and chloride salt on the unconfined compression strength （UCS） of Lianyungang marine clay. The clays with various sodium chloride salt concentrations were prepared artificially and stabilized by ordinary Portland cement with various contents. A series of UCS tests of cement stabilized clay specimen after 28 d curing were carried out. The results indicate that the increase of salt concentration results in the decrease in the UCS of cement-treated soil. The negative effect of salt concentration on the strength of cement stabilized clay directly relates to the cement content and salt concentration. The porosity-salt concentration/cement content ratio is a fundamental parameter for assessing the UCS of cement-treated salt-rich clay. An empirical prediction model of UCS is also proposed to take into account the effect of salt concentration. The findings of this study can be referenced for the stabilization improvement of chloride slat- rich soft clay.

自动化集装箱码头轨道吊维修区布局新模式

针对如何布置自动化集装箱码头轨道吊维修区的问题,将传统码头与自动化码头的堆场机械作业模式及维修模式进行对比,并提出适合自动化集装箱码头轨道吊维修区布置的新模式,并将其应用到洋山四期工程中。

Multi-beam Sonar and Side-scan Sonar Image Co-registering and Fusing

Multi-beam Sonar and Side-scan Sonar compensate each other. In order to fully utilize all information, it is necessary to fuse two kinds of image and data. And the image co-registration is an important and complicated job before fusion. This paper suggests combining bathymetric data with intensity image, obtaining the characteristic points through the minimal angles of lines, and then deciding the corresponding image points by the maximal correlate coefficient in searching space. Finally, the second order polynomial is applied to the deformation model. After the images have been co-registered, Wavelet is used to fuse the images. It is shown that this algorithm can be used in the flat seafloor or the isotropic seabed. Verification is made in the paper with the observed data.

Global lateral buckling analysis of idealized subsea pipelines

In order to avoid the curing effects of paraffin on the transport process and reduce the transport difficulty,usually high temperature and high pressure are used in the transportation of oil and gas.The differences of temperature and pressure cause additional stress along the pipeline,due to the constraint of the foundation soil,the additional stress can not release freely,when the additional stress is large enough to motivate the submarine pipelines buckle.In this work,the energy method is introduced to deduce the analytical solution which is suitable for the global buckling modes of idealized subsea pipeline and analyze the relationship between the critical buckling temperature,buckling length and amplitude under different high-order global lateral buckling modes.To obtain a consistent formulation of the problem,the principles of virtual displacements and the variation calculus for variable matching points are applied.The finite element method based on elasto-plastic theory is used to simulate the lateral global buckling of the pipelines under high temperature and pressure.The factors influencing the lateral buckling of pipelines are further studied.Based upon some actual engineering projects,the finite element results are compared with the analytical ones,and then the influence of thermal stress,the section rigidity of pipeline,the soil properties and the trigging force to the high order lateral buckling are discussed.The method of applying the small trigging force on pipeline is reliable in global buckling numerical analysis.In practice,increasing the section rigidity of a pipeline is an effective measure to improve the ability to resist the global buckling.

Intention and automaticity toward physical and sedentary screen-based leisure activities in adolescents:A profile perspective

Purpose： Physical activity （PA） and sedentary behavior （SB） are increasingly considered independent health behaviors. Additionally, current research suggests that both controlled and automatic determinants account for their adoption. The purpose of this article was to identify intention-automaticity profiles toward PA and screen-based SB and to examine how those profiles are associated with different behavioral patterns. Method： Two cross-sectional studies based on self-report questionnaires were conducted with French high school students （Study 1： n = 198; Study 2： n = 185）. Results： In all, 4 distinct motivational profiles appeared. The first 3 clusters emerged in both studies： ＂PA＂ （high levels of automaticity and intention for PA, low levels of automaticity and intention for screen-based SB）; ＂screen＂ （high levels of automaticity and intention for screen-based SB, low levels of automatieity and intention for PA）, and ＂mixed＂ （high levels of all variables）, whereas the fourth cluster was observed only in Study 2： ＂high control＂ （below-mean levels of automaticity, high levels of intention toward both PA and screen-based SB）. Adolescents with a screen profile displayed the least healthy behavioral pattern, whereas those in the PA profile demonstrated the most favorable behaviors. Conclusion： Future research is needed to extend these results to other populations using complementary assessment methods of automatic psychological processes and PA and SB behaviors.2018 Published by Elsevier B.V.on behalf of Shanghai University of Sport. This is an open access article under the CC BY-NC-ND license.（http：//creativecommons.org/licenses/by-nc-nd/4.0/）.

GABA_(A)(δ)receptor hypofunction in the amygdala-hippocampal circuit underlies stress-induced anxiety

Dysregulated GABAergic inhibition in the amygdala has long been implicated in stress-related neuropsychiatric disorders.However,the molecular and circuit mechanisms underlying the dysregulation remain elusive.Here,by using a mouse model of chronic social defeat stress(CSDS),we observed that the dysregulation varied drastically across individual projection neurons(PNs)in the basolateral amygdala(BLA),one of the kernel amygdala subregions critical for stress coping.While persistently reducing the extrasynaptic GABAAreceptor(GABA_(A)R)-mediated tonic current in the BLA PNs projecting to the ventral hippocampus(BLA→v HPC PNs),CSDS increased the current in those projecting to the anterodorsal bed nucleus of stria terminalis(BLA→adBNST PNs),suggesting projection-based dysregulation of tonic inhibition in BLA PNs by CSDS.Transcriptional and electrophysiological analysis revealed that the opposite CSDS influences were mediated by loss-and gain-of-function ofδ-containing GABA_(A)Rs(GABA_(A)(δ)Rs)in BLA→vHPC and BLA→adBNST PNs,respectively.Importantly,it was the lost inhibition in the former population but not the augmentation in the latter population that correlated with the increased anxiety-like behavior in CSDS mice.Virally mediated maintenance of GABA_(A)(δ)R currents in BLA→vHPC PNs occluded CSDS-induced anxiety-like behavior.These findings clarify the molecular substrate for the dysregulated GABAergic inhibition in amygdala circuits for stress-associated psychopathology.

Nonlinear dynamics of Kuroshio intrusion in the Luzon Strait

This study used a 1.5-layer reduced-gravity numerical model to investigate the nonlinear dynamics of Kuroshio intrusion into the Luzon Strait.The model results suggested that both basin-scale wind curl and lateral friction are the primary factors that control the transformation of the flow,although inertia also plays an important role.Using an idealized model,both the mechanism via which the flow pattern changes depending on the two primary factors and the occurrence of hysteresis were investigated.It was established that the transformation of the Kuroshio flow field between the four previously reported flow patterns(i.e.,leaping across,current looping,eddy shedding,and branch intruding) can be explained under a unified theoretical framework.A diagram is proposed to explain how the flow field transforms between the four patterns from a certain prior state when varying the values of the controlling factors.