智慧城市作为城市化进程持续推进与构建新型城镇化发展格局的重要"引擎",也是地方政府提升治理能力和治理水平的有力武器。文章站在地方政府角度,阐述了在构建智慧城市过程中出现的问题,并以问题为导向,制定了针对性的策略建议,以期更好地完成智慧城市的规划与建设工作。
我国智慧城市经过多年努力,已经从最初的"一哄而上""千篇一律""重硬轻软"等乱象,进入到理性发展阶段。近两年,受新冠疫情、"郑州大雨"等突发事件影响,智慧城市再次备受瞩目,话题不断,其中,诟病"智慧城市不智慧"的话题颇多。而不知是巧合还是有意,同样是近两年,各地政府相继发布新型智慧城市建设规划或行动计划,北京、上海、天津、深圳、
A bioinspired nanocomposite composed of platinum nanoparticles and nanotubular titania was fabricated in which the titania matter was templated by natural cellulose substance.The composite possesses t
Carbon nanotubes(CNTs)possess excellent structural and electronic properties and have been widely investigated as anode materials.
生活化情境教学强调学生积极主动的学习,这与新课改提倡的主动参与、乐于探究、勤于动手相契合。对"自然地理环境的整体性与差异性"生活化情境教学进行深度思考,从情境的创设、展开、深化三个方面阐述高中地理生活化情境教学的实施策略。
Dye sensitized solar cells(DSSCs)have attracted much attention over conventional semiconductor solar cells,because of their cost advantages.
新一轮的高中地理课程改革聚焦地理学科核心素养,综合思维作为地理核心素养的重要组成部分,在高中地理教学中的面临着种种困难,提高课堂有效提问是培养学生学科核心素养,尤其是综合思维的重要途径。本文以鲁教版第三单元"自然地理环境差异性"为例,通过设计研究问题,引导学生从多要素的角度认识地理事物的整体性特征,从时空两个维度分析地理事象的演变规律,从而多角度的辨析人地关系,促进学生综合思维的有效提升。
Energy-rich and “green” hydrogen holds great promise for addressing the ever-increasing demand for energy and climate change of todays society.Therefore,intense work and significant efforts have been
Hydrous hydrazine have been extensively investigated as a promising liquid-phase chemical hydrogen storage material,due to its high content of hydrogen(8.0 wt%),easy recharging ability,and environment