黑龙江省社会经济再生产循环状态的统计分析

从再生产循环的视角观察黑龙江省的生产、分配、交换和消费情况,发现实行市场经济以来黑龙江省的支柱产业以基本转向第一产业,但是其盈利能力在下降。其根源是大量的转基因粮食的进口冲击和化肥等生产成本的上涨,且已经涉及到粮食产业安全问题。为此,必须政策引导结合市场信息披露、产品认证等管理手段,保障龙江绿色品牌和产业安全。

乡村振兴助力新发展格局的理论与现实分析--基于马克思再生产循环理论

乡村振兴和新发展格局都是关系中国未来发展的重大战略规划。从二者的关系来讲,二者根本目标一致、领域有所交叉、实践进程相互嵌套。同时,乡村振兴是成功构建新发展格局的必然要求和关键环节。以马克思再生产循环理论为理论基础,以乡村振兴助力新发展格局构建过程中生产(环节)关系、分配关系、交换关系及消费关系分析为出发点,研究提出现阶段乡村振兴助力新发展格局构建过程中存在的挑战。为此,采取以下措施以破除现有瓶颈:加快提升乡村人力资本水平、加强关键基础设施建设、开发新型生产要素;丰富农民营收手段、促进城乡融合发展;突破传统循环范畴,注重以县域循环带动乡村振兴;提振农民消费欲望、创新农民消费观念、促进乡村产业提质升级。

社会再生产四环节理论架构中的共同富裕:一般路径与中国实践

实现共同富裕是关系党执政基础的重大政治经济问题。文章应用政治经济学原理分析了共同富裕的内涵及其实现的一般路径,认为共同富裕要在当代社会再生产四环节的历史过程中动态推进:生产是实现共同富裕的根本力量,分配是实现共同富裕的必要手段,流通是实现共同富裕的动态载体,消费是实现共同富裕的最终目的。在社会再生产四环节的视角下,分析了中国实现共同富裕的现状与堵点,从而在四环节框架下提出了中国实现共同富裕的强化路径。

内循环与外循环互动:中美双循环路径的差异

构建新发展格局需要宏观大历史的比较视野。作为大国经济,中国发展的主线是以国内大循环促进国际大循环,美国发展的主线是以国际大循环促进国内大循环。当前,中美两国历史上第一次但可能不是最后一次,都站在了以国内大循环为主体的历史关口,都对国际大循环产生着重要乃至决定性的影响。作为负责任的全球利益攸关者,世界大国携手构建人类命运共同体乃是正途。

乡村振兴在新媒体中是如何呈现的?——基于SNA的乡村振兴议题微博内容分析

“乡村振兴战略”由党的十九大报告提出,在党的二十大报告中获得强调。新媒体作为互联网时代记录社会变迁、映射时代发展的重要窗口,在相当程度上反映了乡村发展建设状况。本文基于社会网络分析法,挖掘新媒体中乡村振兴议题背后所映射的发展图景,发现:乡村振兴是阶段性和整体性的有机统一,乡村振兴关键时间节点前后两阶段的发展呈现出阶段性特征,第一阶段以新内源性发展模式下的基础建设和产业发展为主,乡村不断从外部汲取知识和技能等资源激发内生动力;第二阶段注重巩固前期的建设成果,并通过明星公益与利用影视综艺打造乡村IP等方式探寻乡村振兴新路径。阶段构成整体,整体高于阶段,乡村振兴的阶段性内容又共同构建出以生产、分配、交换和消费四大环节为主体的整体循环机制。然而,新媒体在呈现乡村振兴时,较少触及农村养老、医疗卫生、法治建设等微观层面的公共问题,未来应强化多元主体的协同合作,更为全面地展现乡村振兴的多元面貌。因此,把握乡村振兴图景,应当立足整体,将其放置到阶段性的坐标系中,强化微观与宏观的协调统一,才能更深刻理解新时代中国乡村的变化。

以斯拉法《用商品生产商品》理论视角看通信运营商对等互联是否对等

通过《用商品生产商品》价值理论观所阐述的生产结构决定论,应用到通信行业的竞争过程和互联互通政策分析中,可以解析互联互通政策是对行业垄断形成和资源不充分共享的重要因素,通过斯拉法的基本理论应用提出政策调整建议。

Utilization of Recycled Coarse Aggregate in Concrete Mixes

In this paper, the effect of the source of recycled coarse aggregate on the properties of concrete is investigated. The tests were conducted on concrete made from three sources of recycled aggregates： （1） old concrete with unknown strength, （2） old concrete with a known compressive strength of 21 MPa, and （3） old concrete with a known strength of 42 MPa. The three sources of recycled aggregates were used to produce new concrete with a target compressive strength of 21 MPa. The first and third sources of recycled aggregates were used in producing concrete with target strength of 42 MPa. A control mix was designed with aggregates from natural sources. The research included two methods of making recycled concrete. One concrete mix was produced using the recycled aggregate and adding more water than the control mix, to reach the target slump, while the second concrete mix was produced using the same amount of water as the control mix but with additional superplasticizer to maintain the target slump. The results obtained in this research showed that the concrete compressive strength depends on the source of recycled aggregates; the stronger the source of recycled aggregate, the higher the compressive strength of the produced concrete. Furthermore, the compressive strength of the first concrete mix was about 10%-20% lower than the compressive strength of the control mix. However, when superplasticizers were used, the compressive strength was around the same value as the control mix.

Preparation and characteristics of a recycled cement-based superhydrophobic coating with dirt pickup resistance

We introduce a low-cost and effective technique that can transform waste cement-based dust into a superhydrophobic coating with dirt pickup resistance. An organic-inorganic hybrid superhydrophobic coating is prepared by the sol-gel method using methyltriethoxysilane as a precursor and waste cement-based dust as a film-forming material. Orthogonal experiments and a comprehensive scoring method were used to optimize the composition and production technologies. Our results show that this superhydrophobic organic-inorganic hybrid coating has an average static contact angle of 151.65° and low water adhesion. Related tests reveal that the dirt pickup resistance, washing resistance and film-substrate cohesion of this coating are also outstanding. The multi-scale physical and chemical mechanisms behind the properties of the coating are investigated. This recycled cement-based coating can be used as the external cover of engineering structures to protect them from corrosion.