碳税政策下生产和销售的选址问题

本文考虑碳税政策下一个生产型企业生产和销售的选址问题。消费者分布在一条直线上,运输成本是线性的,企业除承担自身产品的运输费用外还承担消费者的运输成本。本文建立了利润最大化模型,分析了利润函数的性质,给出了求解方法。通过数值实验证明了求解方法的有效性,同时得出,即使消费者分布是中心对称的,最优的选址也不一定中心对称,这纠正了人们的错觉。增加碳税可使销售点靠近自己的消费者,增加企业的费用,但不一定起到减排的作用,只有通过灵活的碳税政策才有可能达到减排的目的。     

建设课外开放实验拓宽实践育人途径——以课外化学开放实验为例

Constructing the extracurricular chemistry open experiments for non-major students would help to raise the participation of students in practice instruction, thus benefiting more students. This paper has introduced the construction measures and practical experience about extracurricular chemistry open experiment for non-major students from the following aspects:the attentions in constructing the extracurricular chemistry open experiments for non-major students, the diversified construction of teaching resources and the teaching methods reform.     

The D incompressible Navier–Stokes equations with partial hyperdissipation

The three‐dimensional incompressible Navier–Stokes equations with the hyperdissipation always possess global smooth solutions when . Tao [6] and Barbato, Morandin and Romito [1] made logarithmic reductions in the dissipation and still obtained the global regularity. This paper makes a different type of reduction in the dissipation and proves the global existence and uniqueness in the H¹‐functional setting.     

基于科教融合开展制药分离工程案例教学的研究*

制药分离工程是一门实践性较强的课程,传统授课模式侧重于理论知识的讲解,缺乏对学生解决实际问题的能力和设计能力的培养。以“金雀花花蕾中异鼠李素-3-O-β-D-芸香糖的提取”工程案例和实施过程为例,介绍如何通过案例教学和现代信息技术强化学生实践能力的培养,并对案例教学应用于制药分离工程教学进行了探讨。     

Error Analysis on Hérmite Learning with Gradient Data

This paper deals with Hérmite learning which aims at obtaining the target function from the samples of function values and the gradient values. Error analysis is conducted for these algorithms by means of approaches from convex analysis in the framework of multi-task vector learning and the improved learning rates are derived.     

Optical fiber sensor for temperature measurement based on Silicon thermo-optics effect

A temperature sensor based on the thermo-optics effect of single crystal silicon diaphragm was proposed and studied. The temperature measurement mechanism by using single crystal silicon diaphragm was theoretically analyzed and found the relation between temperature measurement range and the thickness of single crystal diaphragm. It was found that when the temperature changed from 20 °C to 48 °C, the reflected resonant peak wavelength was shifted which was detected by using the dual-wavelength signal demodulation method. Experimental results for temperature measurement demonstrated reasonable linearity and repeatability, related linear regression coefficient of the experimental result is 99.94%. The study would be of utility value for the design and fabrication of silicon-based sensors which were used to measure pressure or the other physical quantities.     

基于SPECT和PET的免疫成像技术研究进展

分子影像技术创新研究促进了体内免疫系统跟踪技术——免疫成像技术的发展,可实现对免疫细胞和免疫分子定位及其功能进行实时成像及无创可视化监控,协助评价免疫治疗的效果,并已成为免疫治疗中一个重要的新兴检测模块。目前,体内免疫成像技术的研究与应用仍处于初步阶段,本综述概述了近年来SPECT和PET成像方式用于免疫监测的研究进展,为未来免疫影像学新技术的发展和应用提供指导。     

分析化学线上教学的实践与思考*

以分析化学课程为例,基于OBE(outcome-based education)教育理念,经广泛调研和精心设计,开展了基于“超星+学习通”平台的完全线上教学。从课程内容设计、课程题库建设、学习模式选择、课后讨论引导、学习效果检测等方面介绍了该教学模式的实施情况。学生的练习成绩和满意度调查反馈显示教学效果良好,有效实现了预期教学目标。     

动物血红蛋白研究进展

动物血红蛋白（Hemoglobin,Hb）不仅具有运载氧气的功能,还具有氧化酶活性、过氧化物酶活性和抗菌等功能.动物血红蛋白功能及结构千差万别,尤其是无脊椎动物,保守性较低.但是其主要功能—–氧运载蛋白功能没有改变;由于血红蛋白的某些结构的变化,从而可以使得血红蛋白获得新的功能.研究动物血红蛋白的结构与功能对揭示生物进化具有重要意义.