本文简要介绍了我国糖业发展过程.从原始的饴糖到蔗糖,从熬煮到精炼,无不浸透着人类科技的发展与进步.随着现代科技的发展,高科技自动化、人工智能的应用,期待着制糖业有更大的进步.
我国企业年金自2005年正式投资运作以来,经历了十余年的资本市场洗礼,总体上实现了年金资产的保值增值目标,形成了具有中国特色的年金运营管理体系.从资产规模、管理理念、投资业绩等方面看,“年金”正日益成为引领国内资本市场发展的重要力量之一.目前,包括职业年金在内的国内年金资产规模已超过2万亿元,是国内资本市场的重要组成部分.随着企业缴费比例的提高,资金增速将更为快速,但规模增大的同时,管理难度也不断加大.在国内经济增速下行压力加大、资本市场复杂多变的形势下,企业年金管理如何做好战略谋划,在竞争激烈的资本市场
To meet the rapid growth of mobile communica-tions services,the continuously upgraded wire-less networks significantly increase the demand for radio spectrum resources.However,the spectrum supply is limited,thus triggering the spectrum de-mand-supply gap.
with the development of 5G,the future wireless communication network tends to be more and more intelligent.In the face of new service de-mands of communication in the future such as super-heterogeneous network,multiple communication sce-narios,large numbe
Cognitive Internet of Things (IoT) has at-tracted much attention due to its high spectrum uti-lization.However,potential security of the short-packet communications in cognitive IoT becomes an important issue.This paper proposes a relay-assisted maximum r
The continuous change of communica-tion frequency brings difficulties to the reconnaissance and prediction of non-cooperative communication net-works.Since the frequency-hopping (FH) sequence is usually generated by a certain model with certain regularity
The spectrum sensing model based on deep learning has achieved satisfying detection per-formence,but its robustness has not been verified.In this paper,we propose primary user adversarial attack(PUAA) to verify the robustness of the deep learning based sp
Specific emitter identification can distin-guish individual transmitters by analyzing received signals and extracting inherent features of hard-ware circuits.Feature extraction is a key part of traditional machine learning-based methods,but manual extrac-
In spectrum sharing systems,locating mul-tiple radiation sources can efficiently find out the in-truders,which protects the shared spectrum from ma-licious jamming or other unauthorized usage.Com-pared to single-source localization,simultaneously lo-carin
Cloud-based satellite and terrestrial spectrum shared networks (CB-STSSN) combines the triple advantages of efficient and flexible net-work management of heterogeneous cloud access (H-CRAN),vast coverage of satellite networks,and good communication qualit