Tier Ⅲ and Ⅳ cities Will Be the Main Driving Forces for Future E-business

Recently,the China E-Business Research Center(100EC.CN)released the'2015 Monitoring Report of China E-business Market'.The report says that the China E-business transaction volume amounted to 18.3 trillion yuan in 2015,up by 36.5%from a year ago,and marking an increase of 5.1 percentage points in growth rate.Meanwhile,the B2B E-business trade value totaled 13.9 trillion yuan,up

Study on the Value of ＂Education Involved by All Related People＂ in the Practice of the Socialist Core Values

The ideological and political education for students in institutions of higher learning is a complicated, systematic project. To unequivocally cultivate the socialist core values of these students and deeply influence their ideological understanding and behaviors, the concept of ＂education involved by all related people＂ is necessarily implemented in all aspects, and the joint force of ＂imparting knowledge and educating people＂ , ＂educating people by management＂ , and ＂educating people by service＂ is formed. As a result, the actual effectiveness of the ideological and political education is improved in institutions of higher learning.

The main force driving forwards Chinese luxury market

It was during the weekend that Miss Wu lover a shop selling the luxury brand Louis VThrough the window, she could indulged in the filled with all kinds of handbags, dustcoats anheels-all she yearned for. But she tarried on thand found herself embarrassed to enter.

Effect of Porosity on the Wind Loads on a Hyperbolic Paraboloid Canopy Roof

A discussion is made of the wind force coefficients for designing the main wind force resisting systems of H.P. （Hyperbolic-Paraboid）-shaped porous canopy roofs on the basis of a wind tunnel experiment. Roof models with a number of small circular holes were made of nylon resin using laser lithography. The porosity was changed from 0 （solid） to 0.4. Besides the porosity, the geometric parameters of the models were the rise to span ratio and slope of the roof. The overall aerodynamic forces and moments acting on a model were measured by a six-component force balance in a turbulent boundary layer. The results indicate that the porosity significantly reduces the wind loads. The design wind force coefficients for porous canopy roofs can be provided by those for solid roofs with the same configuration multiplied by a reduction factor. The proposed wind force coefficients are verified by a comparison of the load effect predicted by the proposed wind force coefficients with the maximum load effect obtained from dynamic analyses using the time history of wind force and moment coefficients. The axial forces induced in the columns supporting the roof are regarded as the load effect for discussing the design wind loads.

Sexual Identity, Preference and Prevalence of Forced Sexual Intercourse among Young People in an Urban Community in Ovia North East Local Government Area, Edo State, Nigeria

Background: Young people are at risk of being victims or perpetrators ofcoerced or forced sexual sex. In predominantly low- and middle-income countries, this contributes significantly to their risk for HIV infection, unwanted pregnancy, and sexually transmitted diseases. Current trends show that young people sexual identity and preferences affect their sexual and reproductive health. Objective: This study aims to determine prevalence of coerced or forced sexual intercourse, sexual identity and sexual preferences of young people in Oluku Community, Ovia North East, Local Government, Edo State, South Nigeria. Methods: A descriptive cross-sectional study conducted in June, 2013 using multi-stage sampling method. Results: A total of 400 young people participated in this study. The mean age was 17.8 ± 3.9 years. A higher proportion of respondents were of the Bini ethnic group 145 (36.3%). Most respondents were Christians 346 (86.5%) while 33 (8.2%) were Moslems. Majority of the respondents had secondary education 271 (67.8%), most were single 363 (90.8%) and were from families with a monogamous setting 289 (72.3%). The prevalence of forced sex was 12.9%, similarly, condom use during forced sex was 27.8%. More females (15.3%) than males (9.6%) had experienced forced sex;forced sex was common among young people from older age group, monogamous homes, and those living in a flat or self contained. Majority (95.3%) of adolescent’s sexual preference was vaginal, only a few preferred oral (3.3%) and anal sex (1.5%). Religion was associated with sexual preference and identity. The sexual identity of most (98.0%) young person’s was heterosexual (or different sex), while 0.5% were homosexual (or same sex) and 1.5% bisexual (or both). Conclusion and Recommendations: Legislation against forced and coerced sex, rape and other forms of sexual violence should be formulated and implemented.

On the Nature and Direction of State-owned Enterprises Reform in a New Era

State-owned enterprises(SOEs) serve as an important material and political basis for socialism with Chinese characteristics. SOEs must be reformed in accordance with Xi Jinping Thought on Socialist Economy with Chinese characteristics for a new era, which is the fundamental basis for maintaining the nature and direction of reform for SOEs. Reforms must be built on the fundamental standpoint with people at the center, and aimed at emancipating, developing and protecting productive forces based on the principles of justice and fairness, which is also the direction for Chinese SOEs reform in the new era. Adherence to the public ownership of state-owned assets in the form of value and its market-oriented management in the form of use-value is not only the objective requirement of a production mode adapting to the growth of productive forces, but also the logic of SOEs reform in the new era. Meanwhile, SOEs need to highlight the top-level designs of governmental systems in the reform process, giving e ective play to the leading and guiding roles of Xi Jinping Thought on Socialist Economy with Chinese characteristics for a new era.

Relationship between water inrush from coal seam floors and main roof weighting

A water-resistant key strata model of a goaf floor prior to main roof weighting was developed to explore the relationship between water inrush from the floor and main roof weighting. The stress distribution,broken characteristics, and the risk area for water inrush of the water-resistant key strata were analysed using elastic thin plate theory. The formula of the maximum water pressure tolerated by the waterresistant key strata was deduced. The effects of the caved load of the goaf, the goaf size prior to main roof weighting, the advancing distance of the workface or weighting step, and the thickness of the waterresistant key strata on the breaking and instability of the water-resistant key strata were analysed.The results indicate that the water inrush from the floor can be predicted and prevented by controlling the initial or periodic weighting step with measures such as artificial forced caving, thus achieving safe mining conditions above confined aquifers. The findings provide an important theoretical basis for determining water inrush from the floor when mining above confined aquifers.

Study of main body element of crustal strain and its relationship with moderate-strong earthquakes

In this paper, progress in strain study of blocks and faults by GPS data are discussed, and the concept that active structures between blocks are the main body of crustal strain is clarified. By energy transfer principle of elastic mechanics, the relation between strain around faults and tectonic force on fault surfaces is set up and main body element model of crustal strain is constructed. Finally, the relation between mechanical evolution of model and seismogenic process of Kunlun earthquake （Ms=8.1） is discussed by continuous GPS data of datum stations. The result suggests that the relatively relaxed change under background of strong compressing and shearing may help to trigger moderate-strong earthquakes.

论新质生产力基础上的“新质民主”与“新质法治”的辩证统一

从分析“新质生产力”的性质、内涵、特征、构成要素及意义出发,运用马克思主义立场、观点和方法,坚持习近平法治思想为指导,可以明确提出“新质生产力”的出现和发展可能引起“新质生产关系”的形成,继而通过“新质经济基础”推动上层建筑朝着“新质上层建筑”转变的重大法理判断。“新质生产力”所引发的社会变革是客观规律,民主与法治作为上层建筑的重要组成部分,也会随着“新质生产力”的不断发展而日益呈现“新质民主”与“新质法治”的特征。“全过程人民民主”是“新质民主”的重要标志,而数字法治、涉外法治构成了“新质法治”的核心要素。法学界要及早规划、超前研究,对“新质生产力”发展可能引发的包含了民主与法治等要素在内的上层建筑可能发生的深远影响,从法理上进行深入分析并拿出切实可行的应对方案。

农业保险发展区域差异研究——基于主体动力分析的视角

鉴于我国农业保险存在着明显的区域间发展“不平衡不充分”问题,文章基于农业保险各主体(农民、保险公司、地方政府)动力的视角,从宏观层面出发,以省为区域,对影响各主体动力的多种因素和农业保险发展水平之间的关系进行了实证考察。结果发现,影响地区农业保险发展水平的主要因素有农民的收入结构、地方财政负担、历史赔付率、专业农业保险公司市场占有率、新型农业经营主体占比等。据此,针对农业保险发展水平相对落后的地区,从优化补贴结构、增加补贴种类、减轻县级财政负担、增设专业农业保险公司、差异化供给等角度提出政策建议。

桥梁拓宽中新旧桥梁连接方法和受力分析应用与研究

结合实际工程,研究了新旧桥梁之间的连接方法,研发了用于新旧桥梁连接的伸缩装置和沉降装置;采用有限元模型模拟新旧桥梁,分析了旧桥在拓宽后的内力变化,以及主梁位移变形的情况。结果表明:提出的新旧桥梁的连接方法在伸缩缝与沉降缝交点处可保持桥面平整,并有良好防水、防尘性能;老桥的主梁拓宽后在移动的车辆荷载作用下其内力较拓宽前减小很多,新桥的内力相应增加,说明新桥对旧桥的荷载起到了一部分的承担作用;新旧桥梁连接后,桥梁的整体性更好,受力更为均匀。

宽体飞机地面主轮协同转弯控制律设计

主轮协同转弯技术能有效提高飞机的地面机动性,降低主起落架在转弯过程中受到的附加侧向扭矩,减小重载飞机地面转弯半径,但目前实现此技术的前主轮转角控制律设计方法尚不明确。提出以主起落架受力为约束条件,计算不同滑行速度下的前主轮转角关系,在全速度范围内进行分段选择并离散化,据此设计前主轮协同转弯控制律,以原理样机为对象进行仿真分析,验证了该控制律能有效降低两侧主起落架扭矩和的峰值。提出的设计方法对多轮系地面运载装备的复合转弯控制律设计具有一定的理论指导意义。

偏载作用下RV减速器主轴承启停动态特性研究

为了获得RV减速器启停工况下主轴承的动态响应特性,以某型RV减速器主轴承为研究对象,分析轴承的径向和轴向偏载作用情况;在此基础上建立轴承多刚体动力学仿真模型,结合工况设置载荷、转速和接触参数,并验证模型有效性;仿真分析了RV减速器主轴承启动和减速停止工况对轴承滚子与保持架、内外圈接触力的影响规律。结果表明,RV减速器主轴承滚子与保持架接触力受启停工况的影响,启动加速阶段碰撞最为激烈,平稳时次之,减速时最小;在启动加速和减速停止阶段,滚子与内圈接触力波动范围为平稳运行时的15倍,为研究RV减速器主轴承的动态特性及寿命试验提供了理论基础。

新质生产力与人的新发展——基于智能生产力的考察

智能时代的生产力是人工智能技术全面改造和加持的新质生产力,以智能生产力为代表的新质生产力是经过智能文明洗礼的新人之创造性劳动的产物,同时也构建了培育高素质新人的生态土壤。新质生产力作为一种知识密集型生产力、创新驱动的生产力、高阶自动化生产力、开放共享的生产力,对人的知识水平、创新能力、技术驾驭及共享协作提出了新的要求,促进了人在智能时代的新发展。同时,新质生产力对人的发展也提供了新机遇和新条件,在新质生产力的加持下,人的发展向着“全面提升”和“自由个性”的方向迈进,人类自身不断得到新的增强,人的智能水平和生存境遇也获得相应的提升与改善,人的发展开启了新的前景。

论新时代共同富裕的时代性意蕴

中国特色社会主义在中国共产党的领导下已经全面建成了小康社会,现如今更是开启了新时代不断促进人的全面发展、全体人民共同富裕,全面建成社会主义现代化强国的新征程,赋予了新时代共同富裕丰富的时代意蕴。新时代共同富裕是发展新质生产力的目标追求;新时代共同富裕是中国共产党领导下全体人民的共同奋斗;新时代共同富裕是中国式现代化的本质要求;新时代共同富裕是劳动自由的实现过程;新时代共同富裕更是深刻影响了世界历史进程,为全人类未来实现共同富裕,过上美好生活,提供了中国智慧、中国方案和中国力量。

温州瓯江北口大桥施工期索夹抗滑移控制

温州瓯江北口大桥为主跨2×800 m的三塔四跨双层钢桁梁悬索桥,主跨钢桁梁采用1000 t缆载吊机大节段吊装,施工期索夹受力大、索夹螺杆紧固力损失大,索夹滑移风险高。为给施工期索夹滑移风险评估和抗滑移控制措施提供依据,在《公路悬索桥设计规范》(JTG/T D65-05—2015)索夹抗滑移系数计算公式的基础上,考虑索夹上临时荷载、主缆轴力增加引起的主缆直径变小和主缆丝股重新排列、螺杆时变效应造成的索夹螺杆紧固力损失,提出适用于大跨悬索桥施工期的索夹抗滑移系数计算方法,分析主要参数对施工期索夹抗滑移系数的影响,并评估该桥施工期索夹抗滑移风险,提出索夹抗滑移控制措施。结果表明:钢桁梁吊装过程中,索夹倾角变化大,应采用当前施工阶段索夹倾角计算施工期索夹抗滑移系数,主缆轴力增加引起主缆直径变小是造成索夹滑移的主要原因之一;该桥除主跨跨中钢桁梁节段对应索夹抗滑移系数满足规范要求外,其余索夹抗滑移系数均不满足规范要求。根据索夹滑移风险评估结果,采取紧固索夹螺杆的抗滑移控制措施,并明确了该桥索夹螺杆紧固次数和时机。该桥采取索夹抗滑移控制措施后,施工过程中索夹均未出现滑移现象。

考虑传热条件的搅拌摩擦焊主轴力控制研究

针对搅拌摩擦焊接过程中的试件结构和焊缝位置变化,导致主轴力波动、焊接质量不稳定的问题,对焊缝位置改变和试件结构变化两种传热条件下的热-力关系进行研究,提出考虑传热条件变化的主轴力控制方案。采用Deform-3D软件进行搅拌摩擦焊温度场仿真,并与试验测得实际焊接温度和主轴力进行对比分析,得出靠近试件边缘的主轴力的变化趋势。引入焊接力边缘效应修正系数,基于Hammerstein结构建立考虑传热条件的搅拌摩擦焊主轴力模型,并构造广义预测控制主轴力控制器。将控制器集成到西门子840Dsl数控系统中,并在焊接设备上开展工程测试。结果表明,考虑传热条件变化的主轴力控制方案的控制效果较好,在不同传热条件下,可将实际主轴力控制在期望主轴力±5%的范围内。

新质生产力赋能中国式现代化:理论逻辑、价值意蕴及实践路径

新质生产力的形成和发展是中国式现代化走向成功的关键因素。作为习近平经济思想组成部分的新质生产力理论,深刻回答了在新发展阶段缘何发展生产力,如何发展生产力,以及发展怎样的生产力等问题。这一理论对中国式现代化的推进具有明显赋能效应,是打造中国式现代化质量版的客观要求。本文在理论层面,从生产效益、产业升级、经济增长点等维度概括了新质生产力的具体内涵、先进质态;在价值层面,认为新质生产力注重以人民为中心的价值理念,强调物质、精神文明的协调发展及人与自然的和谐共生等;在实践路径层面,强调秉承创新思维,多策并举,在实践中培育和壮大发展新动能,以推动国家经济高质量发展。

速度160 km/h列车通过隧道时侧向气动力变化特征

[目的]我国某动车组以160 km/h的速度在明线运行时列车平稳性良好,但通过单线隧道时尾车出现周期性横向晃动的问题,需要对该动车组过隧道时列车气动特性进行深入研究。[方法]采用数值模拟方法,基于RNG k-ε湍流模型和滑移网格技术,建立了带有转向架的某动车组的三维可压缩瞬态仿真模型,研究了列车通过隧道时尾车表面压力变化情况;同时,在时域和频域内分析了列车侧向气动力特征的瞬态性质。[结果及结论]由于隧道壁面对空气流动的限制和列车尾绕流的作用,列车通过隧道时车体两侧存在压差并呈现出交替变化的特征,并且尾车侧向力交变特征更明显;列车所受侧向力具有低频周期性交变特点,主频约为2.2 Hz,且在尾车刚进隧道时气动效应最强,侧向力波动幅度最大;列车侧向力变化值可作为车辆横向平稳性分析的边界条件。

我国学校体育现代化的逻辑探赜、时代审思与行动进路

在党的二十大精神引领下,以中国式现代化全面推进中华民族伟大复兴成为一项中心任务。本文采用文献资料法和逻辑分析法,探讨我国学校体育现代化的发展逻辑,并进行时代审思,据此提出行动进路。研究发现,我国学校体育现代化的发展逻辑涵盖人的现代化激发学校体育的人本关怀、生产力变革引发学校体育的要素重构、文化的自省滋养学校体育的创新活力、全球化治理推动学校体育的身份构建4个方面;从人文主义的价值靶点亟待复归、新质生产力势能亟待释放、中华传统体育的传承效能亟待提振、中国学校体育的话语优势亟待培育4个维度对我国学校体育现代化进行时代审思。行动进路:坚守“中国式”立场,凝聚以人为本的学校体育价值导向;加速“中国式”转型,加快构建学校体育数字化育人生态;凸显“中国式”文化,筑牢中国特色的学校体育文化根基;凝练“中国式”经验,为世界提供学校体育现代化模式借鉴。