摘要：Deep learning techniques are revolutionizing the developmentof medical image *** the advancement of Transformer models,especially ViT and Swin-Transformer,which enhances the remote-dependent modeling capability of the model through the self-attention mechanism,better segmentation performance can be ***,the high computational cost of Transformer has motivated researchers to explore more efficient models,such as the Mamba model based on state-space modeling(SSM),and for the field of medical segmentation,reducing the number of model parameters is also *** this study,a novel asymmetric model called LA-UMamba was proposed,which integrates visual Mamba module to efficiently capture complex visual features and remote *** classical design of U-Net was adopted in the upsampling phase to help reduce the number of references and recover more *** mitigate the information loss problem,an auxiliary U-Net downsampling layer was designed to focus on sizing without extracting features,thus enhancing the protection of input information while maintaining the efficiency of the *** experiments were conducted on the ACDC MRI cardiac segmentation dataset,and the results showed that the proposed LA-UMamba achieves proved performance compared to the baseline model in several evaluation metrics,such as IoU,Accuracy,Precision,HD and ASD,which improved that the model is successful in optimizing the detail processing and reducing the complexity of the model,providing a new perspective for further optimization of medical image segmentation techniques.

摘要：针对《千里江山图》的考据可以有多种路径,本文以微观考证的方式,从解读北宋绫绢工艺入手,探讨《千里江山图》采用绢本作绘呈现出的包括丝织纹理与运笔走势间的有致和谐,以及青绿山水在卷本上随类赋彩层层渲染,尽显绫绢质地的赋色效果。进言之,《千里江山图》的艺术化呈现是丰富的,不仅有着对山川自然青绿涂染所形成的设色淡而深沉的写照,更有着与人文情愫相结缘的超然气度。关于这一点,若从宋徽宗的观赏角度欣赏,在宋徽宗崇尚道教的思想背景下,对《千里江山图》还可以解读出是徽宗“道仙”感性意识的集中体现,画中有许多物象都体现了徽宗内心的隐逸之情,而中国画手卷的特殊表现形式,又为这种道家隐逸思想的抒发提供了如“千里云峰山水承载”“悠悠烟波田园深径”的诗意境界。因而,无论是从绫绢作绘,抑或青绿涂染表现,或是观看视角给予的综合评判,《千里江山图》都为后人留下了无尽的想象空间,有着独具特色的人文历史价值。

摘要：贵州省丹寨县石桥村是当前我国能够生产制造文物古籍修复纸的村寨,因其承继了地形环境、自然资源、生产工艺等“天时、地利、人和”的因素,推动其文化与工艺传承延续至今。本研究以文化认同的认知、情感、行为三个维度为理论指导,探究石桥村苗族古法造纸文化和技艺在当今的传承困境和发展矛盾,并按文化认同的三个维度分别为苗族古法造纸的现代化转化和创新性发展提供策略。

摘要：预测能力是实际应用工作者评价设计优劣的重要准则之一,一般地,通过方差散布图可以对一个固定球面上的设计预测能力进行比较和选择,但无法获得对整个设计区域上的比较结果。文章介绍了基于正交表的响应曲面设计(OACD)以及基于极小极大准则的改进设计(OACM),并应用全区域预测方差占比准则——FDS准则对这两类中心组合设计进行预测能力的比较。结果表明,在一个较小方差范围内,OACD得到的FDS结果要优于OACM,而对于大部分给定方差值,OACM的FDS结果要优于OACD。

摘要：近10年来以超滤膜为核心的净水处理工艺在自来水厂建设中得到了广泛应用,然而其建设和运营成本较高的问题限制了该技术的进一步推广。借鉴小米产品极致性价比的模式,采用“短平流+超滤膜”的短流程净水工艺降低水厂整体建设成本、利用零污染通量来解决长期运行的膜污染问题以及构建有效的智慧水厂决策模型来降低水厂运营成本设计理念,打造成本较低的绿色低碳水厂,并以具体工程案例进行验证。

摘要：Organic solar cells (OSCs) have drawn great attention for their low cost, light weight, solution processability and flexibility [1-3]. Over the last decade, fullerene and their derivatives have been the dominant electron acceptors for OSCs due to their excellent electron-transport properties, but limited by their disadvantages of poor light absorption, high synthesis cost, and difficulties in property tunability.

摘要：多模态话语研究以超越单一语言模态话语的方法特性在影视艺术研究领域彰显其重要价值。基于多模态话语分析理论框架,运用多模态分析软件ELAN6.7对美食纪录电影《舌尖上的新年》从话语语境、话语表达和话语意义三个层次进行实证分析,探讨作为美食纪录电影的视觉文本、语言文本和音乐文本的表达特点及其背后隐含的思想观念,揭示美食纪录电影中多模态语言的相互协同建构主题意义的机制,旨在为美食纪录电影的创作和中国传统美食文化的影视传播提供借鉴。

摘要：针对传统行星减速装置在密封性、制动性能等方面存在的问题,提出双密封液压制动行星减速装置的创新设计方案。分析行星减速装置的工作原理和液压制动系统的原理,并结合设计考虑因素实现双密封结构设计、液压制动系统设计和整体一体化设计。这一设计在密封性和制动性能上的改进效果通过性能测试和结果分析得到了验证。此创新设计具有广泛的工程应用前景,可以提升行星减速装置的密封性和制动性能。

摘要：Controllably mounting foreign atoms on the surfaces of earth-abundant electrocatalysts strongly improve their surface electronic properties for optimizing the catalytic performance of surficial sites to an unusual level,and provides a good platform to gain deep insights into catalytic *** present work describes,employing ultrafine W2C nanoislands(average size:2.3 nm)monodispersed on the N,P dual-doped carbon frameworks as a model system,how to regulate the atomic phosphorous-mounting effect on the surfaces of W_(2)C to derive an active and stable P-mounting W_(2)C(WCP)catalyst for both acidic and alkaline hydrogen evolution reaction(HER).Since in situ phosphorus substitution into carbon sites of preformed W_(2)C nanoislands gradually proceeds from surfaces to solids,so that using a proper amount of phosphorus sources can readily control the surface mounting level to avoid the mass P-doping into the *** this way,the activity per active site of WCP catalyst with robust stability can be optimized to 0.07 and 0.56 H_(2 )s^(-1) at-200 mV overpotential in acid and base,respectively,which reach up to the several-fold of pure-phase W_(2)C(0.01 and 0.05 H_(2) s^(-1)).Theoretical investigations suggest that compared with solid P doping,the P mounting on W_(2)C surface can more remarkably enhance its metallicity and decrease the hydrogen release *** finding disclosed a key correlation between surface foreign atom-mounting and catalytic activity,and suggested a logical extension to other earth-abundant catalysts for various catalytic reactions.

摘要：电催化二氧化碳还原反应(CO_(2)RR)涉及多个电子和质子转移,动态演变过程复杂.具有结构简单性和均匀性的单原子催化剂(SACs)是研究上述复杂过程的理想模型催化剂,有利于理解催化构效关系.原位衰减全反射表面增强红外光谱技术为识别单原子催化CO_(2)RR的动态演变过程提供了有利方法.本文总结了原位红外光谱在电催化CO_(2)RR研究中的应用:首先,简要介绍了电化学衰减全反射表面增强红外光谱的表面增强机制;详细探讨了原位衰减全反射表面增强红外光谱技术在研究原子级金属催化剂催化CO_(2)/CORR反应动态演变过程的关键作用;简述了原位红外谱图确定界面水的相关信息以及电极局部pH值的定量方法.原位电化学红外光谱技术加深了对CO_(2)RR反应机制的理解,揭示了催化剂结构、电解质种类、分子吸附方式等对反应活性和选择性的调控规律.尽管研究已取得较大进展,但由于电催化CO_(2)RR的复杂性,学者对该反应的认知仍不够全面和深入,面临的机遇和挑战如下:(1)精准辨识CO_(2)RR关键中间体/生成物.特别是当中间体/生成物的特征峰与其他峰重叠时,精准识别相关特征峰将极具挑战.一方面,需进一步提高原位光谱技术分辨率;另一方面,近年来深度学习算法在光谱分析领域的应用为中间体/生成物混合特征峰的精准识别提供了有效方案,此类算法能建立变量之间的关系,实现光谱中特征信息的智能、精准提取;(2)深入解析CO_(2)RR机理和复杂的反应路径.目前,研究者尚难以通过直接实验手段明确CO_(2)RR路径.原位电化学红外光谱技术结合密度泛函理论(DFT)是明确CO_(2)RR中间体和反应途径的可行方案,能够进一步指导反应条件优化和催化剂结构设计;(3)建立工况下的原位CO_(2)RR机理研究方案.膜电极组件(MEA)电解槽通过使用膜直接连接阴极气体扩散电极和阳极,有效解决了H型反应器的局限性,具有工业应用前景.然而,基于MEA的工况条件CO_(2)RR机制研究鲜有报道.因此,需要开发工况条件下的原位电化学光谱技术,以探究三相界面分子尺度关键中间体/生成物动态演变,并建立工况条件的CO_(2)RR催化构效关系,这将有助于提高工况下的选择性、转化效率,以及实现更高价值的多碳产品的规模生产,并进一步指导高效反应器设计.综上,本文详细综述了原位红外光谱在电化学CO_(2)RR研究中的应用,并对电催化CO_(2)RR目前遇到的问题提出了解决方案,希望对广大科研工作者利用原位红外光谱进一步深入研究电催化CO_(2)RR提供参考和借鉴.