容积率奖励在我国保障性住房建设中的应用与创新

土地和建设资金是当前各级政府持续推动保障性住房建设面临的两个主要瓶颈,容积率奖励作为一种规划激励手段,有可能成为破解这两个难题的有效政策措施。围绕容积率奖励机制,本文首先探讨其在我国“狭义”层面的应用现状,并基于北京市某项目的案例分析,证明容积率奖励是提升开发企业配建保障性住房积极性最有效的配套措施之一。在此基础上,针对在“狭义”层面应用中存在的两大局限,从丰富容积率奖励对象和引入容积率转让机制两方面入手,探讨如何在“广义”层面上更充分发挥容积率奖励机制在保障性住房建设中的作用。     

A preliminary infrastructure design to use fossil fuels with carbon capture and storage and renewable energy systems

This paper proposes a design methodology for energy infrastructure to address the recent economic and environmental challenges. The proposed energy infrastructure was based on the recognition that fossil fuels will be used for some time with renewable energy sources because renewables are currently unable to replace fossil fuels entirely. A two-fold strategy for the energy infrastructure design is proposed. One is to minimize the negative impact of fossil fuel systems by installing carbon capture and storage (CCS) facilities to reduce greenhouse gas emissions. The other is to accelerate the introduction of renewable energy systems in their place. The design of integrated energy infrastructure is transformed as a Mixed Integer Linear Programming (MILP) problem. Cases of installing CCS and H₂ as a renewable energy source in Korea are illustrated with a discussion of the systematic design of energy infrastructure.     

硅藻土/二氧化钛复合材料的应用研究进展

在硅藻土应用领域方面,负载纳米二氧化钛能使硅藻土具备各种性能,是目前热门的研究方向.本文讲述了硅藻土和二氧化钛的一些性质、制备方法以及在生活中各个方面的应用,并且着重介绍了硅藻土/二氧化钛复合材料的研究方向和应用领域,并对硅藻土及其复合材料在未来生产生活中的应用进行了展望.     

人脸去遮挡新技术研究综述

刑侦工作中,若犯罪嫌疑人的人脸图像存在遮挡,人脸特征点遭到破坏,精确去除遮挡区域成为提高人脸识别技术的重要一步.因此,人脸去遮挡有着重要的研究意义.对人脸去遮挡技术最新进展进行阐述,并基于2016年首次提出的基于深度学习图像修复算法,介绍从2017年至今学者们提出的各类人脸去遮挡融合算法.首先根据遮挡方式的不同将现有算...     

IMPROVED ELMAN NETWORKS AND APPLICATIONS FOR CONTROLLING ULTRASONIC MOTORS

Two improved Elman network models, output-input feedback (OIF) and output-hidden feedback (OHF), are proposed based on the modified Elman network. A recurrent back-propagation control (RBPC) network model is developed by using the OIF Elman network as a passageway of the error back-Propagation. The stability of the improved Elman and RBPC networks is analyzed. Adaptive learning rates are given in the form of discrete-type Lyapunov stability theory, which could guarantee the convergence of the improved Elman and RBPC networks. The speed of the ultrasonic motor is identified using the modified Elman network, OIF and OHF Elman networks, respectively, and some useful comparable results are presented. Numerical results show that the RBPC controller is effective for various kinds of reference speeds of the USM and the proposed scheme is fairly robust against random disturbance to the control variable.     

Continuous Supercritical Fluid Processing of Anhydrous Milk Fat in a Packed Column

A continuous supercritical carbon dioxide processing system was designed, built and operated to investigate its performance for fractionation of anhydrous milk fat (AMF). Packed columns showed mass transfer efficiencies five times greater than a spray column, Short- and medium-chain fatty acids were concentrated in the extract fractions and their amounts decreased as separation pressure increased. The ratio of unsaturated to saturated fatty acids in the raffinate fraction was 0.68 compared to 0.52 in the original AMF. The proportions of low-melting triglycerides in the range —42 to 15°C were greater in the extract fractions (44–72%) compared to the original AMF (29%).     

Sodium Diffusion in High-Silica Glass

Isotope effect and electrical conductivity measurements were used to investigate the mechanism of Na⁺ diffusion in high-SiO₂ glass. A Haven ratio near unity and comparatively high isotope effect values suggest a quasi-interstitial mechanism for Na⁺ diffusion. At low Na⁺ concentration the Na⁺−Na⁺ separation distance is so large that the Na⁺ jumps become uncorrelated.