心中,那如磐的长城——四川省凉山州委书记兼军分区党委第一书记吴靖平关心支持国防建设纪事

“坚持党管武装原则不动摇、落实党管武装标准不降低、关心支持国防和军队建设不退步。”这是四川省凉山州委书记吴靖平三年前就任军分区党委第一书记时作出的承诺。三年来,在他的关心支持下,凉山军分区先后有26项工作成果受到国家、总部和两级军区表彰,凉山州委连续3年被评为四川省“党管武装工作先进单位”。     

摆脱单恋的痛苦

[案例]某团战士小肖,22岁。他说,高中时,喜欢上同班一位女生。后来,女孩考上了大学,他参军入伍,彼此偶尔还有通信联系。再后来, 女孩有了男朋友。但他仍然不能忘记女孩。他认为女孩早晚会发现他真挚的爱。前不久,女孩和男朋友分手了。他写信安慰女孩,并表示了态度。然而, 女孩说,感情是不能勉强的,并劝他好好训练。但他说,自己是对感情认真的人,一旦选择了,不论遇到什么困难,也不愿回头。小肖很烦恼,不如是该放弃,还是该继续执著地追求?     

Noise and vibration measurements in a Viking military vehicle

Noise and whole-body vibration measurements were made in a Viking military vehicle to determine the variation that should be expected during repeat measures, the effect of speed (up to 60 km/h in 5 km/h increments), and during travel over different types of terrain (comprising concrete road, gravel track and rough cross-country). Measurements were made at various crew positions (including the driver and commander) in both the front and the rear cabs in the vehicles. Three translational axes of vibration were measured in each seat. Two speeds were investigated over road (35 km/h and 55–60 km/h) and gravel (20 km/h and 35 km/h) surfaces. The effect of varying speed of the vehicle on the measured noise and vibration magnitudes was also investigated. The highest sound pressure level (L_Aeq) of 104 dB(A) was measured at the commander’s standing position during travel over concrete road at 55 km/h. Higher noise levels occurred for a standing commander compared with when sitting on the seat. A maximum single axis frequency-weighted vibration magnitude of 1.0 m/s² r.m.s. was measured on the driver’s seat during travel over track at 35 km/h. Higher vibration magnitudes occurred during travel over track compared with travel over road. Both noise and vibration exposure of crew within the Viking vehicle increased with increasing speed of the vehicle.     

Influence of porosity distribution on nonlinear free vibration and transient responses of porous functionally graded skew plates

This article deals with the investigation of the effects of porosity distributions on nonlinear free vibration and transient analysis of porous functionally graded skew (PFGS) plates. The effective material properties of the PFGS plates are obtained from the modified power-law equations in which gradation varies through the thickness of the PFGS plate. A nonlinear finite element (FE) formulation for the overall PFGS plate is derived by adopting first-order shear deformation theory (FSDT) in conjunction with von Karman’s nonlinear strain displacement relations. The governing equations of the PFGS plate are derived using the principle of virtual work. The direct iterative method and Newmark’s integration technique are espoused to solve nonlinear mathematical relations. The influences of the porosity distributions and porosity parameter indices on the nonlinear frequency responses of the PFGS plate for different skew angles are studied in various parameters. The effects of volume fraction grading index and skew angle on the plate’s nonlinear dynamic responses for various porosity distributions are illustrated in detail.     

Critical interfaces in body armour systems

The ballistic performance, and behaviour, of an armour system is governed by two major sets of variables, geometrical and material. Of these, the consistency of performance, especially against small arms ammunition, will depend upon the consistency of the properties of the constituent materials. In a body armour system for example, fibre diameter, areal density of woven fabric, and bulk density of ceramic are examples of critical parameters and monitoring such parameters will form the backbone of associated quality control procedures. What is often overlooked, because it can fall into the User’s domain, are the interfaces that exist between the various products; the carrier, the Soft Armour Insert (SAI), and the one or two hard armour plates (HAP1 and HAP2). This is especially true if the various products are sourced from different suppliers.There are between 30 and 150 individual layers within a typical body armour system, and each of the interfaces between each of those layers will, in some way or another, contribute to the ballistic performance of the system. For example, consider the following interfaces/interlayers: (i) the frictional, sliding, inter-ply surfaces within a soft armour pack, and also between the pack and the carrier, (ii) the air-gaps that may develop within the soft armour pack, (iii) the interconnecting space between the soft armour pack and the hard armour plate, (iv) the nature of the interfaces between adjacent plies of a multiplied backing laminate, even in a highly compressed Ultra High Molecular Weight Polyethylene (UHMWPE) variant, (v) the interlayer between the ceramic and its substrate, within a HAP, and (vi) the geometrical fit between two hard armour plates within a stacked body armour system. This paper will provide a User-friendly overview of all such interfaces and provide unique guidance as to their criticality and influence.     

航天城里故事多——西昌市创建"全国双拥模范城"纪事

地处四川省西南部的航天城--西昌,是当年红军长征经过的地方。如今西昌人民和驻军携手并肩,谱写了一曲曲感人的双拥新曲。去年底,西昌市再次被国家民政部、解放军总政治部评为"双拥模范城",这是该市连续第三次获此殊荣。     

俄海军面临第五次复兴

第二次世界大战后,苏联经过40多年的发展,形成了一只可以和美国在全球争霸的远洋作战海军。苏联解体后．由于俄罗斯经济长期萧条．俄罗斯海军也面临着前所未有的严峻局面。1989年苏联的造船工业共为其海军制造了78艘潜艇、作战舰艇及勤务舰船,而1995、1996、1997年俄罗斯海军分别只有11、8、6艘新造舰艇服役,到了1999年则只有4艘。     

新世纪的同心曲——兵团农牧团场开展干部住连入户活动纪实

自今年4月兵团农牧团场全面、深入开展"三个代表"重要思想学习教育活动以来,广大基层干部按照兵团党委的要求,住连入户,"住农家屋,议农家事,听农家言,解农家难,帮农家富,安农家心",谱写了一曲新世纪党群、干群同心曲。记者了解到,截至6月底,已有1.1万余名师团机关干部深入到2580个连队的8万余个职工家庭,与职工同吃、同住、同劳动,建立干群联系点2262个,发放征求意见表6.8万份,征求意见、建议12万余条,写民情日记7.4万余篇,解决疑难3745件,为职工办实事、办好事1.9万余件。职工群众高兴地说,"三个代表"的学习教育活动使老百姓成了咱党和干部心中的"惟一"。基层干部感慨地说,"三个代表"的学习教育活动,使我们     

外伤后何时贴膏药

伤湿止痛膏药力能直接透入皮下组织促进血液循环、活血化瘀、消肿、消炎止痛,它已成为人们治疗跌打损伤、风湿麻木、神经和肌肉疼痛常用之物。然而在使用上,人们却普遍存在着错误,即在损伤后立即贴止痛膏,以为这样伤痛好得快些。其实