后蜀文人的聚合生态和群体人格

文人士子的命运浮沉与王朝兴替息息相关,动荡不宁的战乱时局给西蜀文坛造成了巨大的影响。前蜀政权与后蜀王朝递相承接,这时期的文人士子奔波流离,择木而栖,其聚散离合的生存态势发生了很大的变化。他们的聚合生态和群体人格对揭示后蜀文坛的创作倾向、审美意趣和文学思想裨益良多。

犯罪生态区位聚合模式研究

透过对犯罪地域分布的托庇勒黄金规律的发现,我们将看到这样一种事实:犯罪事件的发生与空间地域之间的绝对关联性,决定了其犯罪事件发展的生态区位聚合模式的建构;透过空间地理信息系统技术在犯罪学的应用,将这种生态区位聚合以其动态制图式的方式标记犯罪活动,最终完成对潜在的犯罪活动予以概念化是所有犯罪研究、犯罪预防与犯罪预测的核心内容。对犯罪生态区位聚合模式的研究并非是犯罪预防的终点,但能够为犯罪政策与警察部门对犯罪活动预测提供一套可行的参考建议。

基于产教深度融合的应用型本科院校“专创融合”研究

应用型本科院校是我国新时代以高质量发展推进“双一流”建设的教育主体之一。受到院校本身应用属性、社会行业技术变革、时代发展现实问题、技能社会分工细化等因素驱动,应用型本科院校专创融合具有科学的逻辑内涵,符合新时代高校发展的趋势需求。但产教深度融合视角下现阶段专创融合仍然存在一些现实短板,具体表现为:主体认知与思维实践上的理念困境、师资队伍和知识架构上的主体困境、孵化体制与配套支撑上的平台困境。加快促进应用型本科院校专创有机融合,应当借鉴产教融合经验,以理念更新激活融合发展链条,以知识进阶打造融合推进队伍,以生态聚合构建融合服务平台。

Simulating Sustainable Urban Development by Incorporating Social-ecological Risks into a Constrained CA Model

A key solution to urban and global sustainability is effective planning of sustainable urban development, for which geo-techniques especially cellular automata(CA) models can be very informative. However, existing CA models for simulating sustainable urban development, though increasingly refined in modeling urban growth, capture mostly the environmental aspect of sustainability. In this study, an adaptable risk-constrained CA model was developed by incorporating the social-ecological risks of urban development. A three-dimensional risk assessment framework was proposed that explicitly considers the environmental constraints on, system resilience to, and potential impacts of urban development. The risk-constrained model was then applied to a case study of Sheyang County, Jiangsu Province in the eastern China. Comparative simulations of urban development in four contrasting scenarios were conducted, namely, the environmental suitability constrained scenario, the ecological risk constrained scenario, the social risk constrained scenario, and the integrated social-ecological risk constrained scenario. The simulations suggested that considering only environmental suitability in the CA simulation of urban development overestimated the potential of sustainable urban growth, and that the urbanization mode changed from city expansion that was more constrained by social risks to town growth that was more constrained by ecological risks. Our risk-constrained CA model can better simulate sustainable urban development; additionally, we provide suggestions on the sustainable urban development in Sheyang and on future model development.

Water-dispersed bone morphogenetic protein nanospheres prepared by co-precipitation method

A modified complex coacervation-co-precipitation method was used to prepare bone morphogenetic protein (BMP)-loaded nanospheres. Three natural polymers were used as packing materials to obtain nanoscale delivery device for BMP,in the presence of phosphatidylcholine functioning as stabilizer. Positively charged polysaccharide, N,N-diethylaminoethyl dex-tran (DEAE-dextran) tended to form stable, uniform and smaller size particles carrying BMP. Negatively charged bovine serum albumin (BSA) induced precipitation of the produced BMP particles due to its weak interaction with BMP molecules, although it produced nanosized BMP spheres. While collagen, a weakly positively charged protein shaped larger particles due to the strong interaction among themselves. A mechanism of co-precipitation process was also deduced to depict the formation of stable nanospheres.

The assembly of plant-patch networks in Mediterranean alpine grasslands

Aims Harsh environmental conditions in alpine ecosystems shape vegetation structure into patches,where many different plant species cluster and grow together.Yet,which factors are important for the structure and dynamics of such plant–patch networks remains poorly understood.We aim to assess which and how environmental and biotic factors predict the assembly of plant–patch networks along a mountain range.Methods We examined the distribution of plant species in more than 5500 vegetation patches in 37 Mediterranean alpine grasslands distributed along a 500 m altitudinal gradient(National Park of Sierra Guadarrama,Spain).We established a plant–patch network for each grassland community and analyzed how nestedness and modularity vary with environmental(altitude,insolation and soil conditions)and biotic factors(number of species per plot,mean patch area and total pasture area).Important Findings Plant–patch networks showed consistent,non-random patterns characterized by a nested,but not modular,structure,which suggests that positive associations among co-occurring specialists promote their growth within patches as subsets of a pool with more generalist species.Both nestedness and modularity of plant–patch networks varied among grasslands.Specifically,nestedness decreased with increasing species per plot and increased with mean patch area,while it was independent of environmental variables;modularity increased with increasing pasture area and species per plot.The negative relationship between species per plot and nested patterns may be linked to the restricted number of species that can coexist within the same patch at a given size.Moreover,the positive relationship between patch size and nestedness indicates that the growth of rare plant species within vegetation patches occupied by more abundant species is facilitated in bigger rather than smaller patches.Furthermore,these results indicate that the nested assembly of vegetation patches may be independent of abiotic conditions.These findings suggest that large and unfragmented vegetation patches are fundamental for the maintenance of plant diversity in alpine grasslands.Looking at species distribution at fine spatial scales may shed new light on the biotic processes underlying plant network assembly and provide novel ways for conserving biodiversity.