节奏揭秘:杜威艺术审美本体特性论的生态内涵

杜威从人作为有机体与环境相互作用这一生态主题出发考察艺术审美性质,揭示出"一个经验"以其鲜明的生成性内涵所具有的审美意义和价值,并进而从经验的内在机制揭示出形式所直接产生的表现性和情感性,然后还在自然和生命的节奏这一普遍模式中揭示出艺术的根本奥秘,并深入阐释了节奏的能量组织功能,使艺术审美本体的生态本性得以敞亮。杜威的观点解开了审美活动本体特性这一真正的"美学之谜"的谜底,与中国传统美学的"气韵"说相融通,对于深刻认识审美活动的生态本性并在此基础上推进美学学理的深层创新,具有极其重要的理论意义。     

众筹中主体互动、价值共创与产品创新

产品创新是现代企业保持竞争优势、获得经济利润的有效策略。本文选取四家多次发起同类众筹项目并且后期实现产品创新的企业作为研究对象,运用扎根理论对案例资料数据进行编码分析来研究众筹中如何激发产品创新。研究发现,主体互动通过发起者学习、支持者学习和信息交互实现;与产品创新紧密相关的价值共创形式主要包括共同策划、共同设计、共同测试和共同推广;案例企业均实现了产品创新,即功能创新、形式创新或服务创新;此外,本文构建了理论模型：主体互动促进价值共创过程从而实现产品创新。     

Sorption of ammonium and phosphate from aqueous solution by biochar derived from phytoremediation plants

The study on biochar derived from plant biomass for environmental applications is attracting more and more attention. Twelve sets of biochar were obtained by treating four phytoremediation plants, Salix rosthornii Seemen, Thalia dealbata, Vetiveria zizanioides, and Phragmites sp., sequentially through pyrolysis at 500 °C in a N2 environment, and under different temperatures(500, 600, and 700 °C) in a CO2 environment. The cation exchange capacity and specific surface area of biochar varied with both plant species and pyrolysis temperature. The magnesium(Mg) content of biochar derived from T. dealbata(TC) was obviously higher than that of the other plant biochars. This biochar also had the highest sorption capacity for phosphate and ammonium. In terms of biomass yields, adsorption capacity, and energy cost, T. dealbata biochar produced at 600 °C(TC600) is the most promising sorbent for removing contaminants(N and P) from aqueous solution. Therefore, T. dealbata appears to be the best candidate for phytoremediation application as its biomass can make a good biochar for environmental cleaning.     

空间飞行对番茄种子活力的影响

以美国航空航天局（ＮＡＳＡ）提供的经空间飞行处理的番茄种子（ＳｅａｃｅＥｘｐｏｓｅｄＳｅｅｄ，ＳＥＳ）和地面对照种子（Ｅａｒｔｈ—ｂａｓｅｄＳｅｅｄＥＢＳ）为材料，研究了空间飞行对番茄种子发芽力和幼苗生长的作用。结果表明，ＳＥＳ发芽迅速、均匀，其发芽势和发芽率分别比ＥＢＳ高２６．５％和５．３％．表现出较强的发芽力；发芽后５ｄＳＥＳ的芽长和根长分别是ＥＢＳ的２．４倍和２．７倍，活力指数是ＥＢＳ的４．１倍，表明空间飞行可显著提高番茄种子的活力。     

试论中国现当代文学的功利性

中国现当代文学的多数作品功利性较强,比如反映时代风云,在作品中提出政治主张,表现某一时期的风云变幻,要求文学担负起重要历史使命几乎成为现代文学的主流;文革之后的文学大部分反映了文学的教育以及认识功能;特别是文学发展到了今天,随着市场经济的发展,在现实的消费社会里,文学也一改昔日清高孤傲的面容,商业功能日益明显.造成这种状况的原因较复杂.从社会、历史、时代、文学观念、作家结构、外来影响以及现代文学的性质等多方面进行分析,不难发现在中国特定的历史条件下中国现当代文学功利色彩的种种表现及其形成原因.     

城乡教育一体化实践与返乡农民工再就业教育行动

在我国城乡教育一体化快速推进中,返乡农民工再就业教育行动展开显得极端重要和极其迫切,从某种意义上甚至可以说是决定城乡教育一体化发展的重要力量。由是,在我国城乡教育一体化行进脉络与发展空间中,廓清返乡农民工再就业行为的目标与意义、职能与责任、方式与路径等基本要素,无疑对我国城乡教育一体化实践产生重大现实意义和深远战略意义。     

探索综合与创新实验室的建设、开放与管理

从培养本科化学专业创新人才的角度,阐明华南师范大学化学与环境学院实验中心综合与创新实验室的建设,并从开放管理模式、开放实验经费、开放实验内容等方面探讨了综合与创新实验室在培养本科化学专业创新型人才中的作用,提高了实验教学质量和学生综合素质,取得了丰硕的科研成果及奖项.     

通信综合实验实训系统的教学效能分析研究

从通信综合实训系统的教学目的出发,分析了当前通信实验教学的发展趋势,介绍了通信专业课程建设与实验教学建设的模式,提出了效能分析框架,给出了"效"与"能"的评价概念和评价指标,并结合近3年的教学实践的数据,给出了效能分析的实例.通信综合实验、实训系统的教学效能的研究,对通信专业实践的量化分析与评价,以及改进实验教学具有非常重要的意义.     

Improved myocardial perfusion and cardiac function by controlled-release basic fibroblast growth factor using fibrin glue in a canine infarct model

Objective: Angiogenic therapy is emerging as a potential strategy for the treatment of ischemic heart disease but is limited by a relatively short half-life of growth factors.Fibrin glue (FG) provides a reservoir for controlledrelease of growth factors.The aim of this study was to evaluate the effects of basic fibroblast growth factor (bFGF) incorporating FG on angiogenesis and cardiac performance in a canine infarct model.Methods: Acute myocardial infarction was induced by ligation of the left anterior descending coronary artery (LAD).Group I (n=6) underwent ligation of LAD alone.In Group II,transmural channels were created in the infarct area (n=6).In Group III,nontransmural channels were created to locate FG cylinders containing bFGF (n=6).Eight weeks after operation,myocardial perfusion was assessed by single photon emission computed tomography,cardiac function by echocardiography,and vascular development by immunohistochemical staining.Results: Total vascular density and the number of large vessels (internal diameter ≥50 μm) were dramatically higher in Group III than in Groups I and II at eight weeks.Only the controlled-release group exhibited an improvement in regional myocardial perfusion associated with lower defect score.Animals in Group III presented improved cardiac regional systolic and diastolic functions as well as global systolic function in comparison with the other two groups.Conclusions: Enhanced and sustained angiogenic response can be achieved by controlled-release bFGF incorporating FG within transmyocardial laser channels,thus enabling improvement in myocardial perfusion and cardiac function.     

幼儿教师职业倦怠的缓解与职业幸福感的提升

职业倦怠与职业幸福感是职业人对其职业所产生的两种性质截然相反的心理体验,两者存在相互排斥的关系,即缓解职业倦怠有助于提升职业幸福感,而提升职业幸福感自然有助于缓解职业倦怠.教师目前普遍存在着较为严重的职业倦怠现象,幼儿教师因其工作压力更大与待遇更低而出现了更为严重的职业倦怠,大量优秀幼儿教师流失.为缓解幼儿教师的职业倦怠,提升其职业幸福感,政府和幼儿园应努力提高幼儿教师的待遇与收入水平,实行以人为本的园所管理,并积极创建和谐的人际关系与友善的园所文化.