西安市拉土车治理的法律途径分析

拉土车频频肇事引发媒体和市民关注,西安市政府近年针对拉土车治理先后六次出台治理措施,每次都有一些新内容,但治理效果却不尽如人意,拉土车依然疯狂,原因就在于这些治理措施未能真正从根本上解决问题。最近一次针对拉土车的措施算是近年来最严厉的,但这些严厉措施同样有不合理性,这些不尽合理的治理措施能否达到预期的治理效果,尚需时日证明。

拉土车顽疾求解

12月2日下午6时14分左右，位于陕西省西安市环城西路北段与西站路丁字路口处发生一起由拉土车转弯高速行驶引发的交通事故，当场造成一名10岁女孩死亡。

TCC-3土槽试验车的设计

提出TCC-3土槽车的总体方案设计,简述行走部分、机体部分、动力输出系统、台车测控系统、土壤恢复系统的结构设计,对其牵引力、行驶速度等设计参数进行分析计算,并介绍土槽车测控系统的设计。经过试验证明:该土槽车的各项指标均达到预期要求。

小型土槽台车测试系统的设计与试验

根据拾膜、卸膜机构试验要求设计了小型土槽台车测试系统，利用Pro／E软件对土槽台车的结构进行了三维造型设计．采用ANSYS软件对土槽台车强度进行了有限元分析，根据分析结果对土槽台车部分结构进行了改进设计。为了检验土槽台车被测部件是否满足试验速度要求，对土槽台车进行速度试验，试验结果表明土槽台车实际行走速度小于理论行走速度，且误差均小于2％，符合被测机构试验要求。

基于LabVIEW的土槽车振动测试系统的开发与应用

为了研究移动式土槽台车自身的机械振动对被测部件的影响程度,须要对土槽试验台车的振动情况进行测试、分析与处理,由于传统测试机械振动的方法存在测试成本高、累积误差大等缺点,本研究以LabVIEW为基础,配以压电式加速度传感器、IEPE信号调理器和数字示波器等设计虚拟机械振动测试系统,并对土槽试验台车的机械振动情况进行测试分析。结果表明,LabVIEW所分析的时域波形与示波器所显示的波形一致,经过快速傅里叶变换后所得到的频域波形与试验过程相符合,验证了该振动测试分析系统的可行性和合理性。

基于MODBUS总线通讯的土槽台车电气控制系统设计

针对土槽台车原继电器控制系统和电磁离合器调速存在的问题,采用PLC、变频器和触摸屏技术进行了系统的升级改造,主要包括电气控制系统的硬件设计,PLC与变频器基于MODBUS总线通讯的实现和人机界面的设计等。三菱FX系列小型PLC通过MODBUS总线可以控制ABB大功率变频器ACS800的启停、给定参考速度,并可以实时读取变频器的主要运行参数。

基于人-车-土系统的撒肥机组能耗与一源多用潜力分析

针对“人-车-土”作业系统下重型撒肥机组油耗因素机制不清和农机单次作业期短、作业频次低导致的农机“电源撂荒”问题,分析“人-车-土”系统油耗结构方程模型互作机制并预测纯电动拖拉机电源“一源多用”模式对“生活-生态”的增益潜力。首先,开展重型拖拉机撒肥作业田间综合试验,采集驾驶员疲劳度、拖拉机燃油油耗、耕层土壤表征量等作业要素数据,建立驾驶员-拖拉机-耕层土壤的油耗结构方程模型;然后,基于结构方程因果关系探寻农机油耗因子间相关性;最后,基于油耗等值转换理论计算燃油农机等效需电量与碳排放量,预测纯电动拖拉机“一源多用”模式对生产生活电源互换共享与减排降碳的贡献潜力。结果表明:耕层土壤紧实度是拖拉机主要油耗影响因素;驾驶员操作疲劳对油耗具有间接影响,可通过操纵拖拉机间接影响耕层物理性质和拖拉机碳排放、作业效率。电动拖拉机电源“一源多用”对农网末端小型用电设施供电具有一定潜力,在机械化田间管理期,等效耗电量约为45 kW·h/hm^(2),减少碳排放12 kg/hm^(2)(CO_(2)),中小规模农场可减少农机碳排放约2464 t(CO_(2)),节约电9.24×10^(6) kW·h,并且其电源闲置时提供约110 t玉米烘干所需电力,或165台通风设备全天同时通风所需电力,或5500个路灯夜间照明的电能,或11个值班室全年的用电需求。

土渣车通用转向架设计改进

通过对各种土渣车进行详尽调研、查阅了大量的设计资料、进行了充分的分析论证、对土渣车研制经验总结等方面作了大量细致周密的工作,重新设计了通用转向架,可大幅降低生产成本、简化工艺、缩短生产周期。

高速公路软土路基桥头段的预抛高探讨

阐述了高等级公路软土路基桥头段的不均匀沉降现象，分析了预抛高实施的原因及预抛高值的计算原理，提出在纵横两个方向上实施预抛高的建议。

桥头跳车的原因与防护

结合工程实践，对桥头跳车的原因作了分析，从换土法、提前预压法、后台换料法等方面，阐述了桥头跳车的预防对策及处理方法，并提出了一些注意事项。

Fatigue behavior of crane beam strengthened with CFRP

In order to study the fatigue behavior of the damaged reinforced concrete （RC） beams strengthened by carbon fiber reinforced polymer （CFRP） laminate, three T-shaped beams strengthened by CFRP and one contrasting beam are tested under fatigue loading, with the parameters of different modes of strengthening and different fatigue load levels considered. The main results obtained from the tests are： the width of the crack decreases 50. 2% to 66%, and the development of the crack is limited; the stress of steel decreases 24. 1% to 28. 2%, and the stiffness increases 14.9% to 16. 1% after being strengthened. Based on the technical specification for strengthening concrete structures with CFRP and the conclusions from the tests, a calculating scheme of the flexure stiffness is given, which can be used for reference in engineering design. Finally, some suggestions are given for design in fatigue strengthening.

满族佛学大师宗月

宗月大师(1880—1941)俗姓刘,是满洲内务府旗人,家住北京西直门里,祖上是主管广东海关税收的官员,极为富有。辛亥革命后,刘德绪看破红尘,视钱财为身外之物,乐善好施,救济了无数穷苦人家,成为京城有名的“刘善人”。老舍先生自幼聪明,但无钱读书,是刘善人拿钱并亲自拉着他的小手送进私垫读书的。他用自家的钱办过半日学校、贫儿学校、办过养老院、办过通俗讲习所、办过牛痘站、办过图书馆、收养过灾童、为街道安装路灯、添置土车……等等。家财散尽后,1926年皈依现明法师,在广济寺出了家,受具足戒,

如何下好让双马局

1.炮二进二 炮8平5 2.炮八平二 炮5进4 3.车九平八 炮2平5 4.车八进八………… 黑方以下有马8进7、炮5退2和车1进1三种变化。 (一)马8进7--这是此局面下最容易出现的惯性下法,也是速败之着。 4.…………马8进7 5.前炮平七

Nature of Soil Acidity in Relation to Properties and Lime Requirement of Some Inceptisols

Some Inceptisols representing the Singla catchment area in Karimgaungedistrict of Assam, India, were studied for lime requirement as influenced by the nature of soilacidity. The electrostatically bonded (EB)-H^+ and EB-Al^(3+) acidities constituted 33 and 67percent of exchangeable acidity while EB-H^+, EB-Al^(3+), exchangeable and pH-dependent aciditiescomprised 6, 14, 20 and 80 percent of total potential acidity. The pH-dependent acidity made a majorcontribution towards the total potential acidity (67%～84%). Grand mean of lime requirementdetermined by the laboratory incubation method and estimated by the methods of New Woodruff,Woodruff and Peech as expressed in MgCaCO_3 ha^(-1) was in the order: Woodruff (15.6) > New Woodruff(14.9) > Peech (5.1) > incubation (5.0). Correlations analysis among different forms of acidity andlime requirement methods with selected soil properties showed that pH in three media, namely water,1 mol L^(-1) KC1 and 0.01 mol L^(-1) CaCl_2, had a significant negative correlation with differentforms of acidity and lime requirement methods. Exchangeable Fe and Al showed significant positivecorrelations with EB-Al^(3+) acidity, exchangeable acidity, pH-dependent acidity and total potentialacidity, and also lime requirement methods. Extractable Al showed positive correlations withdifferent forms of acidity except EB-H^+ and EB-Al^(3+) acidities. The lime requirement by differentmethods depended upon the extractable aluminium. Significant positive correlations existed betweenlime requirements and different forms of acidity of the soils except EB-H^+ acidity and incubationmethod. The nature of soil acidity was mostly pH-dependent. Statistically, the Woodruff method didslightly better than the New Woodruff, incubation and Peech methods at estimating lime requirementand hence the Woodruff procedure may be recommended for routine soil testing because of its speedand simplicity.

Effect of Organic Manure and Chemical Amendments on Soil Properties and Crop Yield on a Salt Affected Entisol

A field experiment was conducted for two consecutive years in a farmer's field at Haji Mora Village, Dera Ismail Khan (D.I. Khan) in the Northwest Frontier Province (NWPP) of Pakistan to compare various management practices, such as the effect of various organic manures and gypsum in a rice-wheat cropping system on a saline-sodic Entisol (Zindani soil series). The treatments consisted of 1) a control (rice-wheat), 2) gypsum, 3) farmyard manure (FYM), 4) berseem (Trifolium alexzndrinum L.) as green manure (GM), and 5) dhancha (Sesbania sp.) as GM. All treatments increased yields of both rice and wheat significantly (P < 0.01) over the control, with the green manure treatments proving more economical than the others; while they decreased pH, electrical conductivity (EC), and sodium adsorption ratio (SAR) of the soil. Saturation percentage and available water of the soil were raised for all treatments due to an increase in organic matter content of the soil.

Numerical simulation for sheet metal forming process of 16Mn blade of large concrete-mixer truck

A finite element analysis method was used to simulate the stamping process of the blade of a large concrete-mixer truck. The updated Lagrange method and the elasto-plastic constitutive equation were adopted to solve the large strain and displacement deformation of the blade. A modified Coulomb friction model was used to solve the sliding contact between the blade and the dies. The von Mises stress distribution in the blade, the spatial displacement variation and the spring-back of the typical node were investigated in the simulation. The von Mises stress in the blade where the spring-back occurs is lowered from 463.0MPa to 150.0MPa before and after the spring-back. A typical node in the blade has a 3.33mm spring-back in Z direction. The results of the (experiments) agree well with the simulation. The analysis results are valuable for designing optimal tool dies.

Study on determining of reinforced concrete false roof strength and design of reinforcement based on reliability theory

Study on efficient mining of the steep incline and fractured ore-bodies in Yongshaba mine of Guizhou Kailin Group shows that ore-body is fractured and difficult to support the roadways in-vein.After research of the actual conditions about the ore-bodies,we have made the initial decision to adopt reconstruction of roof downward sublevel cut-and-fill mining.The men work safely under the false roof supporting the top plate.However,the difficult problem is how to determine the strength of the false roof.In this case,the method based on reliability theory has been put forward.Combined with elastic mechanics and field practice,when practical value of reliable probability is 90 %,the value of the false roof strength has been calculated,and the study shows that stope span greatly influences the false roof strength.With the strength of artificial roof,the reasonable reinforcement design ensures the false roof which can supply the demand of strength under large span and load.

Results of Testing Maize Hybrids on Lands Shifting from Rice-Growing Areas of Less Efficiency in the Mekong Delta

Forecasters predict that by 2020 there will be 4.5 or 5 million tons per annum maize supply deficiency in Vietnam. As a result of this projection, the government responded by shifting 80,000 ha of low-efficiency rice production areas into maize production （2014-2015） and this area of production for maize is expected to increase to 150,000 ha by 2016-2020. Nevertheless, not all commercial maize hybrids could be suitable for rice-growing land in the Mekong Delta and a national project of hybrid maize development for Mekong Delta has been conducted since early 2014. In the project, yield trials of 20 maize hybrids, sourced from Vietnamese institutions and the private sector including Syngenta （NK67） and Dekalb （DK9901）, were sown in Dong Thap, Hau Giang and Long An provinces situated in the Mekong Delta, in minor acid sulphate soils with a pH of 5.0-5.5. The trial included three replications in an Alpha lattice design conducted during spring-summer in 2014. The hybrids flowered at 50-52 d after planting and physiologically matured between 93-97 d after planting. This suggested they would be suitable for cropping systems, which was comprised of three seasons per year. To determine which hybrid is best suited for the region, researchers evaluated yield and ear characteristics. The average yield of the genotypes across locations was 52.03, 54.92 and 57.60 quintals/ha, respectively, and the heritability of genotypes in each location was 0.51, 0.81 and 0.61, respectively. The mean yield of DK9901 was 58.19 quintals/ha, ranking the 7th among 20 hybrids, and NK67 was 47.58 quintals/ha, ranking the 19th. The grand mean was 54.92 quintals/ha and heritability for all genotypes was 0.79. The highest yield was produced by the Southern seed company hybrid SSC474 （69.39 quintals/ha）, which yielded significantly more maize than DK9901 （58.19 quintals/ha） at P 〈 0.05, followed by VS71 from National Maize Research Institute （NMRI） at 63.52 quintals/ha, and LCH9A from NMRI at 63.39 quintals/ha. Although the yield of the VS71 hybrid was greater than the DK9901 hybrid, the ear characteristics were less desirable. Therefore, after comparing these hybrids, it was concluded that SSC474 and LCH9A were the two most suitable hybrids to produce in the Mekong Delta.

Effect of the off-road terrains on the ride comfort of construction vehicles

In order to evaluate the impact of off-road terrains on the ride comfort of construction vehicles,a nonlinear dynamic model of the construction vehicles interacting with the terrain deformations is established based on Matlab/Simulink software.The weighted root mean square(RMS)acceleration responses and the power spectral density(PSD)acceleration responses of the driver s seat heave,the pitch and roll angle of the cab in the low-frequency region are chosen as objective functions under different operation conditions of the vehicle.The results show that the impact of off-road terrains on the driver s ride comfort and health is clear under various conditions of deformable terrains and range of vehicle velocities.In particular,the driver s ride comfort is greatly affected by a soil terrain while the comfortable shake of the driver is strongly affected by a sand terrain.In addition,when the vehicle travels on a poor soil terrain in the frequency range below 4 Hz,more resonance peaks of acceleration PSD responses occurred than that on a rigid road of ISO 2631-1 level C.Thus,the driver s health is significantly affected by the deformable terrain in a low-frequency range.

Allocation optimization of bicycle-sharing stations at scenic spots

Bicycle-sharing system is considered as a green option to provide a better connection between scenic spots and nearby metro/bus stations. Allocating and optimizing the layout of bicycle-sharing system inside the scenic spot and around its influencing area are focused on. It is found that the terrain, land use, nearby transport network and scenery point distribution have significant impact on the allocation of bicycle-sharing system. While the candidate bicycle-sharing stations installed at the inner scenic points, entrances/exits and metro stations are fixed, the ones installed at bus-stations and other passenger concentration buildings are adjustable. Aiming at minimizing the total cycling distance and overlapping rate, an optimization model is proposed and solved based on the idea of cluster concept and greedy heuristic. A revealed preference/stated preference （RP/SP） combined survey was conducted at Xuanwu Lake in Nanjing, China, to get an insight into the touring trip characteristics and bicycle-sharing tendency. The results reveal that 39.81% visitors accept a cycling distance of 1-3 km and 62.50% respondents think that the bicycle-sharing system should charge an appropriate fee. The sttrvey indicates that there is high possibility to carry out a bicycle-sharing system at Xuanwu Lake. Optimizing the allocation problem cluster by cluster rather than using an exhaustive search method significantly reduces the computing amount from O（2^43） to O（43 2）. The 500 m-radius-coverage rate for the alternative optimized by 500 m-radius-cluster and 800 m-radius-cluster is 89.2% and 68.5%, respectively. The final layout scheme will provide decision makers engineering guidelines and theoretical support.