Modeling of optimal investment in science and technology

The latest achievements in science and technology lead to the development of new and more productive capital that can essentially increase a company’s profit. On the other hand, companies should invest not only in the productive capital, but also in science and technology.

The optimal control of an economic system that divides its output among the production of consumption goods, the accumulation of new capital, and the contribution to science and technology is considered. The model is expressed as nonlinear integral equations with unknowns in the integrands and lower limits of integration. An optimization problem for the profit maximization is suggested. The necessary condition for an extremum and the second variation of the functional are derived. The structure of optimal solutions is analyzed. Interpretation of all results is provided.     

基于动态演化博弈分析的投贷联动创新机制研究

通过一个包含股权投资公司、商业银行以及政府三方主体的动态演化博弈模型,建立了一种由政府引导的投贷联动创新机制。理想状态下,科创企业能够获得商业银行的信贷支持,非科创企业能够通过股权融资降低财务杠杆,政府则通过对投贷联动进行协调获得更高的税收与股权投资收益。研究发现,政府在进一步推动投贷联动中发挥着不可替代的重要作用,提高项目质量、提高对非科创企业的价值提升能力以及适当的政府干预是推动投贷联动顺利开展的三条重要路径。研究结论对进一步推动供给侧结构性改革,缓解科创企业融资困境,降低企业杠杆率具有一定的参考价值。     

技术创新项目投资决策方法研究

利用科学实用的多目标决策方法对企业不同技术创新投资项目进行决策评估,可为企业提供重要的决策支持,具有重要的现实意义.结合多目标决策理论和模糊数学的方法,在分析技术创新项目特点的基础上,提出了一种基于模糊数学的多目标决策方法.应用算例表明该方法用于技术创新项目投资决策是合理可行的.     

我国化石能源消费多因素分析——基于新能源替代与能源技术进步视角

社会进步和经济发展离不开能源投入,但是化石能源的过度消费会造成严重的污染。为了缓解环境污染和能源短缺的问题,我国新能源替代步伐逐渐加快。本文基于新能源替代与能源技术进步视角对化石能源消费进行了多因素分析。首先,基于总产出对化石能源与新能源弹性,计算了两类能源对经济增长的贡献率,得到了两类能源的技术进步度量。然后,选取了1995-2016年间我国实际GDP、能源技术进步、新能源消费、环境规制、城镇化等变量作为影响化石能源消费的因素,时间序列回归结果显示新能源对化石能源消费还未形成有效的抑制作用,但是新能源与两类能源技术进步的交叉项对化石能源消费的控制作用显著。最后,基于各个解释变量的历史变化规律进行情景模拟,发现在经济转向高质量增长和能源技术不断进步的背景下,我国化石能源消费峰值将在短期中出现。     

The multicriteria analysis for construction of benchmarkers to support the Clinical Engineering in the Healthcare Technology Management

In developing countries, approximately half of the healthcare equipments are not in full use and the main cause of this is the inadequate management of them. The Clinical Engineering might face this problem in the healthcare environment analyzing the equipment with a health technological process perspective to identify opportunities of improvements. Generally, the inadequate management is a result of lack of systemized and contextualized information about the health technological process. The effort to make an adequate management generates an increasing interest in the use of benchmarker. Currently, the benchmarkers used by the Clinical Engineering are not representative of a health technological process as a whole. Health technological process concept is stated in this article. The multicriteria analysis methodology MCDA (Multicriteria Decision Aid) is used to obtain benchmarkers and to identify opportunities of improvements, thus generating conditions for that the Clinical Engineering consolidates its relevant contribution for the healthcare.     

中国高技术产业的技术创新影响因素:基于面板数据模型的实证检验

利用中国16个高技术行业的面板数据,对高技术行业的技术创新影响因素进行了实证分析,不仅研究了R&D投入对高技术行业技术创新的影响,还考虑了行业融资结构、外资企业研发的技术溢出效应、产权结构、企业规模以及市场集中度等因素的影响作用.     

红龙果食用红色素H的提取工艺条件

红龙果又称青龙果或芝麻果(ＨｙｌｏｃｅｒｅｕｓＣｏｓｔａｒｉｃｅｎｓｉｓｏｒＷｅｂｅｒＢｒｉｔｔ),是仙人掌科三角桩属植物,原产墨西哥,是近年由国外引进的新兴食用水果,为食肉弃皮水果,皮厚约占果重28%为深红色。我们进行了从红龙果皮中提取天然色素Ｈ[1-4]的工艺条件研究,以利其开发利用。1　实验部分1 1　浸提实验称取切碎的红龙果果皮每份重10ｇ①分别加入水、乙醇、乙酸乙酯、丙酮、乙醚、石油醚和甲苯各20ｍｌ,室温浸提5小时,过滤,观察提取液颜色;取滤液5ｍｌ于25ｍｌ容量瓶中,加水稀释至刻度,测最大吸光度Ａ值。②分别用无…     

Specific features of laser cutting of steel sheets and monitoring of sample quality after laser influence

An automated laser system with an 8-kW quantum generator with the beam quality not worse than that of a single-mode laser is described. The possibility of using such a system in procurement production for cutting carbon and stainless steel sheets is demonstrated. The quality control of the blank material shows that the properties of the latter satisfy appropriate standards. __________ Translated from Prikladnaya Mekhanika i Tekhnicheskaya Fizika, Vol. 47, No. 4, pp. 176–184, July–August, 2006.     

基于可拓学的技术创新项目评价应用研究

将可拓优度评价方法应用于企业技术创新项目选择过程之中 ,并甄选了一组技术创新项目评价的通用指标 ,通过实例应用的研究 ,分析了该评价模型的应用方法及特点 .     

具有人力资本和科技进步的经济增长模型研究

通过引入新的变量,将二维非自治动力系统转化为二维自治的动力系统,得到包含教育,实物资本,人口和技术进步的经济增长模型.证明二维自治动力系统存在唯一的平衡点且为结点.对于给定的初始状态,模型描述的经济存在一条增长路径.通过对模型动态性质的讨论,得出维持经济长期增长的关键因素是技术进步.最后,讨论了死亡率、折旧率和对教育的投资对经济增长的影响,得出在相同的生育率的情况下,死亡率越低,经济增长越快;低折旧率对应于高经济增长,加大教育的投入也可有效地促进经济增长.