美国农业产业化发展若干经验及启示

美国农业的发展,得益于农业产业化的发展(也称农业一体化发展),美国农业产业化开始于20世纪初期,随着工业化、社会化的发展而发展.近一个世纪的产业化努力,促使今天美国农业发展成为最典型的现代化农.本文将对美国农业产业化的几个主要方面进行研究,并分析其对加快我市农业产业化进程的有益启示.     

区域经济差距研究的理论综述

区域经济差异一直是区域经济学研究的核心问题之一,也是世界各国经济发展过程中的一个普遍性问题。本文从区域经济差距的理论基础入手,综述了区域经济理论、新增长理论、后发优势理论对区域经济差距研究的理论贡献及它们之间的逻辑联系,为区域经济差距研究提供了系统的理论支撑点。     

品格证据在未成年人缓诉制度中的运用研究

未成年犯罪嫌疑人的品格证据在决定对其是否适用缓诉以及缓诉的结果上有重要影响。借鉴国外有关的立法及司法经验,阐述了品格证据在构建我国未成年人缓诉制度中的具体运用,尤其界定了前科劣迹的范围,论证了考察未成年犯罪嫌疑人品格证据的主体、内容、原则以及应注意的问题。     

Right on Schedule

正China continues to make life better after realizing its first centenary goal on time For Wang Xiuying, an 84-year-old retired railway worker in Changchun, Jilin Province, a xiaokang life means practicing morning tai chi in a park near her neighborhood and shopping around in the three supermarkets near her apartment.     

Circles of Convenience

正Urban communities undergo upgrading to facilitate people's daily lifeWang Yong had run a streetside stall to repair watches and make keys in Yangpu District of Shanghai for decades.Recently,the 54-year-old handyman moved his business to an indoor community business center nearby,putting an end to his days of working outdoors,braving the wind and rain.The environment here is much better with a stable customer flow.I only need to pay water and electricity and other miscellaneous fees,but no rent, Wang told Shanghai-based Jiefang Daily.     

Living the City Dream

When she obtained her master's degree this year, Zhu Yanyan decided to leave Beijing after residing in the capital for six years and go back to her hometown in Chengdu, Sichuan Province, to settle down. Compared with Beijing or Shanghai, the cost of living in Chengdu is lower, making life less stressful—but no less convenient, Zhu explained.     

From Passive Actor to Active Leader

The closing ceremony of the Fourth China International Import Expo (CIIE) took place in Shanghai on November 10. As the world's first dedicated import exhibition at the national level, the CIIE serves as an important platform for international purchasing, investment promotion, cultural exchanges and cooperation. The Fourth CIIE coincided with the 20th anniversary of China's accession to the World Trade Organization (WTO). The past two decades have seen China's economic aggregate jump from about 10 trillion yuan ($1.54 trillion) in 2001, to more than 100 trillion yuan ($15.4 trillion) in 2020, while its total foreign trade leapt to $4.6 trillion from $500 billion during the same period.     

侨资与福建农村经济高质量发展的互动关系研究

基于华侨华人具备投资福建农村的三大优势,在侨资受内资和纯外资双重压力及福建农村的有限资源约束背景下,侨资与福建农村经济高质量发展之间存在动态影响.在构建福建农村经济高质量发展指标体系的基础上,测算了福建农村经济高质量发展指数,并运用EG检验、脉冲响应、方差分解等方法,实证结果发现,短期内侨资对福建农村高质量发展的贡献较大;长期来看,福建农村经济发展对侨资的吸引力逐渐增强,甚至超过侨资对福建农村经济发展的作用,福建农村高质量发展对侨资的推动作用时限更长.主要原因在于短期内侨资的逐利性发挥了重要作用;从长期来看,福建农村高质量发展仍能有效促进资本的集聚,吸引不同类型的资本投资,促使农村产业结构得到优化.     

Evaluating the forensic informativeness of mtDNA haplogroup H sub-typing on a Eurasian scale

The impact of phylogeographic information on mtDNA forensics has been limited to the quality control of published sequences and databases. In this work we use the information already available on Eurasian mtDNA phylogeography to guide the choice of coding-region SNPs for haplogroup H. This sub-typing is particularly important in forensics since, even when sequencing both HVRI and HVRII, the discriminating power is low in some Eurasian populations. We show that a small set (eight) of coding-region SNPs resolves a substantial proportion of the identical haplotypes, as defined by control-region variation alone. Moreover, this SNP set, while substantially increasing the discriminating efficiency in most Eurasian populations by roughly equal amounts, discloses population-specific profiles.     

A motion detection-based framework for improving image quality of CCTV security systems

Closed-circuit television (CCTV) security systems have been widely used in banks, convenience stores, and other facilities. They are useful to deter crime and depict criminal activity. However, CCTV cameras that provide an overview of a monitored region can be useful for criminal investigation but sometimes can also be used for object identification (e.g., vehicle numbers, persons, etc.). In this paper, we propose a framework for improving the image quality of CCTV security systems. This framework is based upon motion detection technology. There are two cameras in the framework: one camera (camera A) is fixed focus with a zoom lens for moving-object detection, and the other one (camera B) is variable focus with an auto-zoom lens to capture higher resolution images of the objects of interest. When camera A detects a moving object in the monitored area, camera B, driven by an auto-zoom focus control algorithm, will take a higher resolution image of the object of interest. Experimental results show that the proposed framework can improve the likelihood that images obtained from stationary unattended CCTV cameras are sufficient to enable law enforcement officials to identify suspects and other objects of interest.