Rural Land System Reform Pilot Experiment in Pidu District: Background, Debate and Enlightenment

By combining top-level design with local pilot practices,rural land system reform,as an important priority on the agenda of deepening comprehensive reform,has accumulated a series of replicable and applicable experiences that are conducive to amendments to relevant laws.This paper takes stock of the basic experience of Pidu District in addressing typical problems arising in its rural land system reform and then investigates the inner link between the reform and the persistence of high housing prices in cities,the capital flowing to the countryside,and the rural revitalization program.Based on this analysis,the author puts forward three basic directions of the rural land system reform:remain committed to marketization,balance the interests of all parties and promote the development of rural industries.

Achievements and Problems of Reform of Investment Management System for Shanghai Pilot Free Trade Zone

The establishment of Shanghai Pilot Free Trade Zone provides many possibilities for China's economic construction. This paper made a comparative analysis on investment management system of Shanghai Pilot Free Trade Zone and traditional investment management system,discussed achievements and problems of reform of investment management system of Shanghai Pilot Free Trade Zone,and finally came up with pertinent policy recommendations.

Cells grouping scheme against pilot contamination in large scale antennas system

The influence of cells groupings factor to the performance of the cells groupings time-shift pilot scheme is researched for the multiple cells large scale antennas systems（LSAS）. The former researches have confirmed that the cells groupings time-shift pilots scheme is effective to reduce inter-cell interference, especially pilot contamination, which results from the pilot reuse in adjacent cells. However, they have not specified reasonable cells groupings factor, which plays a critical role in the general performance of the LSAS. Therefore, this problem is researched in details. The time for reverse-link data transmission will be compressed, when the groupings factor surpasses a certain range. Thus it is not always beneficial to increase the cells groupings factor without limitation. Furthermore,a reasonable cells groupings factor is deduced from the perspective of optimization to enhance the system performance. Simulations verify the proposed cell grouping factor.

Nonlinear instability suppression of closed-loop pilot-vehicle system with rate-limiting actuator based on anti-windup compensation

To solve the flight safety problem caused by nonlinear instabilities（category II pilot induced oscillations, PIOs） of the closed-loop pilot-vehicle system with rate-limiting actuator, the antiwindup（AW） compensation method to avoid category II PIOs is investigated. Firstly, the AW compensation method originally used for controlling input magnitude limited system is introduced, then this method is extended for controlling input rate-limiting system through a circle criterion theorem. Secondly, the establishment of the AW compensator is transformed into the solving of linear matrix inequalities. Finally, an AW compensator establishment algorithm for the closed-loop pilot-vehicle system with the rate-limiting actuator is obtained. The effectiveness of the AW compensation method to avoid category II PIOs is validated by time-domain simulations,and compared with rate-limited feedback（RLF） command rate compensation method. The results show that the AW compensation method can effectively suppress category II PIOs and maintain the nominal performance when the closed-loop pilot-vehicle system is normal. Unlike the command rate compensator which works upon system uninterruptedly, the AW compensation method affects the closed-loop pilot-vehicle system only when the rate-limiting of actuator is activated, so it is a novel PIO avoidance method.

1+X证书制度试点运行及推进机制研究--以厦门某高职学院为例

随着社会对高等教育需求的不断增长,传统学历教育模式面临着越来越大的挑战。为了适应就业市场需求的快速变化和提高学生的就业竞争力,我国推出了1+X证书制度试点。1+X证书制度是我国高等教育改革的一项重要举措,在培养应用型人才方面起到了积极的推动作用。该文以厦门某高职院校为例,探讨1+X证书制度治理现状及治理实践路径,为1+X证书制度的进一步发展提供有益的经验和借鉴。

Experiment and Simulation for Articulated Lifting Subsystem of 1000 m Deep Sea Mining System

The experiment system of 1000 m deep sea mining system is built up with the similarity theory. Sine mechanism is used to simulate mining ship to generate lateral shock excitation by ocean wave. Simulation and experiment of spherical joint connecting deep sea mining system has been done in band six marine conditions. The results indicate that the moment of spherical joint connecting deep sea mining is smaller than that of the thread connected ones, the lifting pipe of sphelical joint is ＂flexible pipe＂. The flexural torque of the articulated lifting pipe system in pump and buffer is generally periodic variation with some irregularity, the value is stable on 60 N·S, and it is obviously smaller than that of the fixed lifting pipe system; The total displacement exhibits cyclic variation pattern, and the periodicity of them is longer than that of sea current. The results of experiment and simulation are basically consistent. And the analysis in the paper offers theoretical foundation of 1000 m deep sea mining system in China.

中国碳市场建设成效与展望(2024)

碳交易通过显性碳定价原则,将排放的负外部效应内部成本化,为处理经济发展与减排关系提供了一种解决方案。截至2023年,全球共28个碳交易体系投入运行,覆盖的温室气体排放量超过全球排放总量的17%,实施区域从发达国家逐步拓展至发展中国家,从欧洲、北美等地逐步拓展至拉美、东亚等地,更多的区域选择将碳市场减排目标与宏观减排目标绑定,并通过不断优化制度提高市场有效性,碳市场影响力逐步提高。2023年中国全国碳市场核算、核查、配额分配、数据管理、自愿减排等制度方法取得重要突破,全年配额成交2.12亿吨,是2022年的4.2倍,成交均价68.15元/吨,较2022年上涨23.24%,较第一个履约周期上涨59.04%。经过两个履约周期的建设,全国碳市场已形成要素完整的全流程制度框架,责任主体分工明确,支撑平台安全运转,碳排放数据质量大幅提高,碳价格发现机制初步形成,碳减排激励约束效果初显,推动碳市场成为中国实现“双碳”战略目标的重要政策工具。下一步全国碳市场将扩大行业覆盖范围,梯次纳入水泥、民航、电解铝、钢铁等行业;优化配额分配方法,适时引入有偿分配机制;调整履约机制,明确结余配额结转规定;出台多项中国核证自愿减排方法学,完善强制减排与自愿减排市场的衔接;加快推进与国际碳市场的连接,促进技术、方法、标准、数据互认互通,协助积极应对欧盟碳边境调节机制。

Dynamic Analysis of the Seafloor Pilot Miner Based on Single-Body Vehicle Model and Discretized Track-Terrain Interaction Model

In order to achieve the complex dynamic analysis of the self-propelled seafloor pilot miner moving on the seafloor of extremely cohesive soft soil and further to make it possible to integrate the miner system with some subsystems to form the complete integrated deep ocean mining pilot system and perform dynamic analysis, a new method for the dynamic modeling and analysis of the miner is proposed and developed in this paper, resulting in a simplified 3D single-body vehicle model with three translational and three rotational degrees of freedom, while the track-terrain interaction model is built by partitioning the track-terrain interface into discrete elements with parameterized force dements built on the theory of terramechanics acting on each discrete dement. To evaluate and verify the correctness and effectiveness of this new modeling and analysis method, typical comparative studies with regard to computational efficiency and solution accuracy are carried out between the traditional modeling method of building the tracked vehicle as a multi-body model and the new modeling method. In full consideration of the particMar structure design of the pilot miner, the special characteristics of the seafioor soil and the hydrodynamic force of near-seafloor currnt, the dynamic simulation analysis of the miner is performed and discussed, which can provide useful guidance and reference for the practical miner system in design and operation. This new method can not only realize the rapid dynamic simulation analysis of the miner but also make possible the integration and rapid dynamic analysis of the complete integrated deep ocean mining pilot system in further researches.

辽宁省科技成果转化存在的问题及对策研究

在国家创新驱动的发展国策下,科技成果转化日益成为促进区域经济发展的重要引擎,党和国家的政策也明确指出了科技创新和经济相结合的发展方向,因此,科技成果转化作为两者的结合点被提上了日程,成为制约区域经济发展的重要环节。然而,辽宁在科技资源分配及产学研协调沟通机制上存在不足,导致辽宁科技创新成果的本地转化率并不高,这在一定程度上限制了辽宁经济的增长。基于此,本文通过梳理科技创新价值链和科技成果转化过程研究,剖析辽宁省科技成果转化存在的问题,并根据辽宁的实际情况和区域特色,构建具有辽宁地方特色的科技成果转化模式,期望能够引领地区产业发展,提高区域科技创新能力,有效促进科技成果本地转化。

基于位置分配的去蜂窝massive MIMO系统导频分配功率控制算法

针对去蜂窝(cell free,CF)大规模多输入多输出(multiple-input multiple-output,MIMO)系统中存在严重的导频污染问题,提出了一种基于位置分配的贪婪导频分配功率控制算法(greedy pilot assignment based on location with pilot power control,GPABL with PPC).首先,遵循相邻用户不分配相同导频序列的原则进行贪婪导频分配(greedy pilot assignment,GPA);然后,在导频分配的基础上叠加了导频功率控制,选择合理的导频功率控制系数减小信道估计的均方误差.仿真结果表明,将两种方式结合起来进行导频优化,系统的吞吐能力有所提升.

基于SFIC模型的养老事业与养老产业协同发展路径研究

养老事业与养老产业同属于养老服务体系的组成部分,充分发挥其作用重在二者协同发展,即二者相互协作实现养老服务的充分供给且达到二者共同发展的双赢效果。通过创新性地将SFIC模型用于养老服务体系发展分析,构建养老事业与养老产业协同发展分析框架,从星光老年之家、公建民营养老机构、政府购买养老服务、长期护理保险制度试点四个案例比较剖析养老事业与养老产业协同的起始条件、助成性领导、制度设计、合作程序,提出改善养老事业与养老产业协同发展的起始条件、发挥助成性领导对养老事业与养老产业协同发展的创造性作用、优化养老事业与养老产业协同发展的制度设计、在养老事业与养老产业协同发展中实现良性合作四个养老事业与养老产业协同发展的路径。

何以从心而治——基于社会心理服务体系建设宿州试点的分析

社会心理服务体系作为社会治理的重要组成部分,有助于创造和谐稳定的社会环境,其试点工作是推进平安中国、健康中国建设的重要抓手。宿州市作为社会心理服务体系的试点城市,通过内外联动的协同治理机制,采用特色培训模式,培养社会心理服务实干型人才,打造精品心理服务活动,将社会心理服务引入到治理领域等体系化建设。这一系列体系化建设举措不仅推动了社会心理服务体系建设的理论研究,丰富了精细化治理的内涵;也打造了社会治理的“心”模式,推动社会心理服务体系建设与社会治理的协同发展。

试点:一种重要的中国公共政策机制

试点是根植于中国的公共政策机制,是当代中国公共管理的关键词之一。试点显著区别于基于西方历史经验的政策过程,它越过了大量有关议程设置与方案选择的政策讨论。政府通过试点在正式实施一项政策之前授意少部分地方先行实践,检验模糊政策目标的适切性或探索实现政策目标的工具与路径。试点降低了政策争论导致悬而未决的可能,减少了直接推行一项政策的调适成本和潜在风险,是中国公共政策适应性的重要来源。试点并非总能取得预期效果,但当代中国的结构条件和制度基础较好地支撑了试点在总体上的有效性。面向建构中国自主公共管理知识体系的目标,有关试点的理论研究需要进一步厘清试点概念,揭示试点背后的多重逻辑,抽象开展试点的原则。

OFDM系统中一种A-MMSE信道估计算法

针对正交频分复用(Orthogonal Frequency Division Multiplexing,OFDM)系统中最小均方误差(Minimum Mean Squared Error,MMSE)信道估计算法误码率(BER)高的问题,提出一种平均最小均方误差(Averaged-Minimum Mean Squared Error,A-MMSE)信道估计算法。该算法首先基于802.11n标准而构造了一种新的导频结构,收发两端分别进行降采样和过采样处理,利用已知训练序列和导频获得信道频域响应。仿真结果表明,所提出的A-MMSE信道估计算法与传统的MMSE算法相比,在BER为10^(-3)时,信噪比改善了约8dB。因而所提出的信道估计算法能明显改善系统的BER性能。

A method for measuring pilot workload based on task analysis

This paper presents a method for measuring pilot workload based on task analysis in order that the cockpit can be designed more reasonably. In addition, a prototype system is developed to use this method for the assessment of pilot workload. The method breaks the pilot's mission into several phases, segments, functions and tasks. And break pilot workload into 6 components using Wickens' 'multi-resource theory', which are vision(V), vision goggles(G), auditory sensation(A), cognitive activity(C), psychomotor activity(P) and kinesthesis(K). All missions consist of those tasks and each task have 6 workload components. The workload components for each task have been acquired by a study on many pilots, so workload can be assessed. A mission analysis database is built, and the prototype system can simulate pilot's flight process and evaluate workload.

基于美欧医疗器械上市后法规要求对我国建立医疗器械警戒制度的思考

本文旨在深入探讨美国和欧盟的医疗器械上市后监管制度,包括风险监管理念、监管法规体系、上市后临床研究、质量管理体系等,总结出开发风险监测工具、落实风险管理、采用合并报告模式、公开风险信息等经验,为我国医疗器械行业有序发展提供参考。我国可以借鉴美欧医疗器械上市后的监管实践,从提高监管机构能力、建设监测哨点和强化法规框架等方面,建立和试点医疗器械警戒制度。

以制度型开放创新为核心 高标准高质量推进中国(新疆)自贸试验区建设

在我国自贸试验区建设十周年之际,2023年10月国务院印发了《中国(新疆)自由贸易试验区总体方案》,正式批准设立中国(新疆)自由贸易试验区,使新疆成为我国第22个自贸试验区,也是我国西北边境地区首个自贸试验区。文章深入研究分析了新疆自贸试验区设立的重大意义,并就自贸试验区在拉动我国经济增长和实现高质量发展中的作用,制度创新在自贸试验区打造一流营商环境、提升现代产业国际竞争力等方面所发挥的作用和影响,以及制度型开放创新与逆全球化背景下深入实施自贸试验区提升战略的关系等问题进行了全面分析与思考。在此基础上,就如何以高水平开放为引领,以制度创新为核心,高标准高质量建设新疆自贸试验区提出了思路与对策建议。

混合所有制办学模式下专业群1+X证书制度试点新路径探索

我国自从启动1+X证书制度试点以来,职业院校作为实施主体,积极推动人才培养模式探索、“三教”改革、产教融合实践等工作。以东莞职业技术学院为例,通过其二级学院的混合所有制办学模式,组建行业产教融合共同体,推动构建“学历教育+职业技能培训”融合体系;立足专业群与产业链、技术链、岗位群的需求对接,将职业技能等级证书的考核内容融入人才群培养全过程,培养现代产业急需的复合型高质量技术技能人才群,更好地适应现代产业发展变化。

以改革试点推动全局财税体制改革

当前财税体制改革的复杂性和艰巨性远远超过之前的改革,这对新一轮财税体制改革提出了很大的挑战。因此,应以改革试点为先导,这既可以发挥地方政府的主观能动性,探索最优改革路径,又可以降低改革风险。本文总结了需要改革且适合试点的领域:税收分享体系改革试点、地方财政收入结构改革试点、分类转移支付改革试点、事权和支出责任改革试点、横向政府间事权合作改革试点、预算编制改革试点、预算透明公开改革试点、地方债改革试点。这些均涉及当前财税体制改革的核心问题,也是财税领域长期未解决的问题,因而可以通过试点探索全局性改革方案。同时,改革试点应建立有效沟通机制,确定各方参与和协调,坚持中央统一领导和行政主导,赋予地方政府一定的探索权,共同促进财税体制改革。

推进校园急救试点教育的探究——以泰州职业技术学院为例

文章分析校园急救试点教育的背景和必要性,阐述泰州职业技术学院开展校园急救试点教育的基础,从而对推进校园急救试点教育的具体实施方案提出思考,旨在为后期相关研究提供参考。