理论与实验结合的商业银行经营管理教学改革探讨

商业银行经营管理是高等院校金融工程专业的一门专业课程,以往对于该课程的讲授多注重理论知识,忽视对于学生动手能力的培养,不利于现代高等学校培养“厚基础、宽口径、强能力、高素质”的新型人才。本文分析了商业银行经营管理课程教学中存在的问题,通过探讨理论课与实验课相结合的模式,为高校商业银行经营管理课程教学改革提供参考。     

A highly alkaline-stable metal oxide@metal–organic framework composite for high-performance electrochemical energy storage

Most metal–organic frameworks (MOFs) hardly maintain their physical and chemical properties after exposure to alkaline aqueous solutions, thus precluding their use as potential electrode materials for electrochemical energy storage devices. Here, we present the design and synthesis of a highly alkaline-stable metal oxide@MOF composite, Co₃O₄ nanocube@Co-MOF (Co₃O₄@Co-MOF), via a controllable and facile one-pot hydrothermal method under highly alkaline conditions. The obtained composite possesses exceptional alkaline stability, retaining its original structure in 3.0 M KOH for at least 15 days. Benefitting from the exceptional alkaline stability, unique structure, and larger surface area, the Co₃O₄@Co-MOF composite shows a specific capacitance as high as 1020 F g⁻¹ at 0.5 A  g⁻¹ and a high cycling stability with only 3.3% decay after 5000 cycles at 5 A g⁻¹. The as-constructed solid-state flexible device exhibits a maximum energy density of 21.6 mWh cm⁻³.     

Encapsulating metal organic framework into hollow mesoporous carbon sphere as efficient oxygen bifunctional electrocatalyst

Applying metal organic frameworks (MOFs) in electrochemical systems is a currently emerging field owing to the rich metal nodes and highly specific surface area of MOFs. However, the problems for MOFs that need to be solved urgently are poor electrical conductivity and low ion transport. Here we present a facile in situ growth method for the rational synthesis of MOFs@hollow mesoporous carbon spheres (HMCS) yolk–shell-structured hybrid material for the first time. The size of the encapsulated Zeolitic Imidazolate Framework-67 (ZIF-67) is well controlled to 100 nm due to the spatial confinement effect of HMCS, and the electrical conductivity of ZIF-67 is also increased significantly. The ZIF@HMCS-25% hybrid material obtained exhibits a highly efficient oxygen reduction reaction activity with 0.823 V (vs. reversible hydrogen electrode) half-wave potential and an even higher kinetic current density (J_K = 13.8 mA cm⁻²) than commercial Pt/C. ZIF@HMCS-25% also displays excellent oxygen evolution reaction performance and the overpotential of ZIF@HMCS-25% at 10 mA cm⁻² is 407 mV. In addition, ZIF@HMCS-25% is further employed as an air electrode for a rechargeable Zn–air battery, exhibiting a high power density (120.2 mW cm⁻² at 171.4 mA cm⁻²) and long-term charge/discharge stability (80 h at 5 mA cm⁻²). This MOFs@HMCS yolk–shell design provides a versatile method for the application of MOFs as electrocatalysts directly.     

久期技术与基于隐含期权的商业银行利率风险管理

从衡量利率风险的久期与凸度技术出发,重点探讨了基于隐含期权及期权调整利差的有效久期和有效凸度模型,并研究了其在我国商业银行利率风险管理中的具体应用。     

社会资本视域下协商型社会组织的构建

“探索开展社会组织协商”的提出,使得如何构建协商型社会组织成为理论界关注的热点问题。对各地区社会组织数量与政府信息公开状况的相关性分析表明,社会组织的发育程度与协商开展密切相关;对2014年“全国性行业协会商会评估专题数据”的分析发现,社会组织社会资本发育不足是开展社会组织协商的瓶颈。应以服务绩效增强社会组织的网络覆盖,以外部制度促进社会组织内部规范的民主化,以制度创新推动社会组织公信力的提升,培育社会组织适合于协商民主的社会资本,推进协商型社会组织的建设,进而促进社会组织协商的全面开展。     

Molecular design revitalizes the low-cost PTV-polymer for highly efficient organic solar cells

Developing photovoltaic materials with simple chemical structures and easy synthesis still remains a major challenge in the industrialization process of organic solar cells (OSCs). Herein, an ester substituted poly(thiophene vinylene) derivative, PTVT-T, was designed and synthesized in very few steps by adopting commercially available raw materials. The ester groups on the thiophene units enable PTVT-T to have a planar and stable conformation. Moreover, PTVT-T presents a wide absorption band and strong aggregation effect in solution, which are the key characteristics needed to realize high performance in non-fullerene-acceptor (NFA)-based OSCs. We then prepared OSCs by blending PTVT-T with three representative fullerene- and NF-based acceptors, PC₇₁BM, IT-4F and BTP-eC9. It was found that PTVT-T can work well with all the acceptors, showing great potential to match new emerging NFAs. Particularly, a remarkable power conversion efficiency of 16.20% is achieved in a PTVT-T:BTP-eC9-based device, which is the highest value among the counterparts based on PTV derivatives. This work demonstrates that PTVT-T shows great potential for the future commercialization of OSCs.     

水稻土SOM含量高光谱模型的母质差异性研究

以青紫泥(BlueclayeyPaddysoil,BP)和红黄泥(RedPaddysoil,RP)为例,研究发育于不同成土母质的水稻土SOM含量高光谱模型的差异性.结果表明,发育于河湖沉积物的BP与发育于第四纪红色粘土母质的RP,因为土壤中所含粘土矿物的不同,加上有机质组份的差异,其SOM含量高光谱模型具有母质的独特性.无论以反射系数为自变量或是以反射系数一阶微分为自变量,BP与RP的SOM含量高光谱模型在模型所包含波段的个数和位置都有较大的差异.     

叶下珠提取方法的研究概况

以国内发表的相关文献为依据,综述了叶下珠提取实验的溶剂选择、提取方法及化学成分的分离和测定方法等方面的研究成果,基于文献中有机溶剂的普遍使用,提出了实验过程应体现绿色化学理念的观点。     

长跑运动的商业价值与健身价值互动研究

长跑运动是田径运动中的一类项目,在各级各类的田径比赛中,长跑都是必备的项目.而对于大众健身,长跑运动又是最受欢迎和最有效的运动锻炼方式,健身的跑步机就是为长跑运动爱好者准备的.正是因为长跑运动有这样的群众基础,所以商家开始在长跑运动上动脑筋,努力开发其商业价值,近年来流行的城市马拉松比赛无疑是长跑运动商业化开发的成功案例.在城市道路上举行的各种类型的长跑比赛本身就是一种很好的宣传,加之大众的参与和城市知名度的扶持,使得诸如城市马拉松比赛等长跑运动的健康价值和商业价值越来越受到商家乃至政府的青睐.     

有机合成反应选择性及其控制策略

有机合成是化学研究领域中最具有魅力的。结构复杂、性质多元、应用广泛的有机物及其合成方法学,让人赞叹与探求。文章用科学方法论总结了有机合成中的化学选择性、区域选择性和立体选择性的规律及其热力学和动力学控制策略,提出了综合利用其控制原理解释或预测竞争性反应产物的基本方法。