30 research outputs found

    售房养老———中国老龄化趋势下养老问题的新思路

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    随着我国老龄化社会的到来,养老压力日益突出,传统养老模式已不能适应和满足市场经济条件下的养老需求。本文提出一个养老的新思路———售房养老,并在介绍售房养老的理论根源和基本思路的基础上,介绍售房养老模式的运行机制,提出有待解决的问题

    售房养老——中国老龄化趋势下养老问题的新思路

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    随着我国老龄化社会的到来,养老压力日益突出,传统养老模式已不能适应和满足市场经济条件下的养老需求。本文提出一个养老的新思路——售房养老,并在介绍售房养老的理论根源和基本思路的基础上,介绍售房养老模式的运行机制,提出有待解决的问题

    貌合神离:中英文同款广告的符号和眼动分析

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    通过一系列中英文同款广告,该研究结合符号和眼动技术,指出相似的表象之下,微妙的细节调整如何折射出中西方读者对媒介内容叙述方式的不同偏好,以及处理群己关系的不同价值取向,从而呈现出“貌合神离”的警民、亲子、师生、夫妻、男女等社会关系。本文系国家自然科学基金项目“东西方不同文化思维方式对广告说服的影响:一个自下而上的脉络建构与验证”(项目编号:71372076)的阶段性研究成果

    Research on L/D Mechanism Based on AHP Extension

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    Location Optimization of Distribution Center of Gupu Tea Company

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    Experimental research on soil amendment developed with urban and rural waste resources to improve capacity of holding soil water and fertilizer

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    以生活炉渣、建筑废料、生物秸秆等城乡废弃资源为原料,制备一种面向节水农业的环保新产品———土壤扩蓄增容肥.实验结果表明:在棉花苗期,6种土壤扩蓄增容肥配方的节水效果较土对照高300倍,干物质积累增加4.77%~50.00%.6种配方的皮棉产量均比对照高,增产幅度为4.70%~14.25%,纤维物理性状有所改善.产量高低顺序依次是,玉米秸秆>小麦秸秆>生活炉渣>秸秆木炭>建筑废料>煤矸石>CK.利用城乡废弃资源生产的扩蓄增容剂,不仅能改良土壤物理和化学性状,更是棉花增产、优质、节水、降低生产成本的关键技术措施之一,具有显著的生态效益、社会效益和经济效益

    An All-Digital Clock and Data Recovery Circuit with Bandwidth Calibration

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    這篇論文的主題為提出一個具有校正頻寬之9.5Gb/s全數位資料回復電路。此論文提出一種校正頻寬的機制,使得當輸入資料密度變動時頻寬固定。此全數位資料回復電路使用28奈米製程製做。晶片面積為0.065毫米平方。在電源1.05伏特下消耗的功率為33毫瓦。量測到的回復時脈方均根抖動為2.25ps。This thesis describes the design and implementation of an all-digital clock and data recovery circuit (ADCDR) with bandwidth calibration for 9.5 gigabit/s operation. The proposed architecture achieves constant jitter transfer bandwidth independent of data transition density. This ADCDR is fabricated in 28-nm CMOS technology. Its active area is 0.065mm2 and the power is 33mW from a supply of 1.05 V. The integrated RMS jitter is 2.25ps for PRBS7

    Analysis of land auction premium:an empirical study in Xinzhuang Fuduxin area

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    於土地標售成交案例中,市場上不乏以高溢價率標得土地之案例。惟究竟土地投標人何以願意支付高出底價甚多之金額取得土地?何以部份土地溢價率相對較高,其他土地溢價率相對較低?則未能從過去之單一文獻探究。 本文透過彙整過去關於土地標售溢價率之文獻,歸納拍賣理論共同價值觀點、私人價值觀點、特徵價格理論觀點、實質選擇權理論觀點,建立土地標售溢價率之分析架構。此外,本文以新莊副都心為實證分析標的,說明該分析架構之操作方式。其中,透過列聯表分析,卡方獨立性檢定、相關係數及其檢定,驗證新莊副都心土地標售溢價率高低之成因能透過前述四大觀點切入,且影響溢價率可再歸納為受人的因素、地的特質影響。至於該實證分析衍生之政策意涵有二。第一,若以財政角度切入,政府得將待標售抵費地劃分為面積較小之土地,藉以降低進入門檻;此外,政府亦能透過加強宣傳或採第二價格密封拍賣制增加競標人數,以創造高溢價率、達到增加財政收入之目的。第二,以社會責任角度切入,政府應擬定及檢視相關政策是否能減少因得標後短期轉售土地所創造之高溢價率,以降低市場上之投機情形。Why do the land auction participants bid a land at a premium? While reviewing the paper about the land auctions, none of the papers can describe the high premium situation in land auction completely. This thesis constructs a framework of price premium analysis in land auctions and includes the views of auction theory, hedonic model theory and real option theory. Besides, this research presents how to analyze the price premium in land auctions with an empirical study. Using the contingency table, Pearson's chi-squared test of independence and calculating the correlation coefficient with 52 land auction data in Xinzhuang Fuduxin, there are two findings. First, we can use the points of the analyzed framework to describe the price premium. Second, the reason of the price premium can be summarizes as the factors of people and land characters. According the empirical result, there are some policy implications. First, due to the view of enhancing revenue, the government can create high premiums by dividing the land into small areas to lower the entry barrier to participate the auction. Besides, the government can have more advertisements or sell the land through second price sealed bid auctions to increase the number of the competitors. Second, due to the view of responsibility, the government should restrain the phenomenon of selling the land in the short term

    Thermal and Electrical Properties of ZnO-Bi_2O_3-B_2O_3 Glasses with Y_2O_3 Addition

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    用红外光谱仪、拉曼光谱仪和差热分析仪研究了用“熔化-急冷“制得的用于SOfC封装的含y2O3的znO-bI2O3-b2O3系统玻璃的结构和转变温度(T g);用X射线衍射仪、热膨胀系数仪和高阻计研究了由“模压成型-热处理“制得的该玻璃制品的微晶化、热膨胀系数(α)和体积电阻率(ρ)情况。结果表明:y2O3≤0.5~1.0WT.%时,y2O3能促进[bO3]向[bO4]转变,使α降低;y2O3≥0.5~1.0WT.%时,玻璃中bI-O键增多,又使α降低趋势趋缓;随y2O3增加,其作用可能由破坏网络结构逐渐向增强网络结构转变,致T g先降后升;添加y2O3延缓了玻璃的析晶;微晶化能提高α和ρ;添加y2O3虽致α和ρ下降,但其值仍在SOfC封接玻璃的要求范围内。ZnO-Bi2 O3-B2 O3 glasses with Y2 O3 addition for SofC sealing were investigated.Structure and glass transition temperature(Tg) of the glasses prepared by"melting-quench"were studied by Infrared spectroscopy,Raman spectroscopy and differential thermal analyzer;crystallization,thermal expansion coefficient(α) and volume resistivity(ρ) of the glasses prepared by "molding-heat treatment"were studied by X-ray diffraction,dilatometer and high resistance meter.The results show: α decreases significantly with the addition of Y2 O3 ≤ 0.5~1.0wt.% to glasses for Y2 O3 promotes [BO3 ] to [BO4 ] which strengthens the network;while Y2 O3 ≥ 0.5~1.0wt%,α declines not so significantly for the increase of Bi-O content in the glasses;the effects of Y2 O3 addition on the glasses may change from weakening the network to strengthening the network with the content of Y2 O3 increasing,which leads to Tg decrease at first and then increase;Y2 O3 addition on glasses can inhibit crystallization;crystallization can improve α and ρ.Though adding Y2 O3 to the glasses causes α and ρ to decline,the value of α and ρ are still within the sealing requirements of SofC.福建省重大平台建设基金(编号:2006L2003

    DRAINMOD-N II 模拟冬季长期覆盖黑麦对 地下排水及NO3 -N 流失的影响

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    在玉米-大豆轮作系统中种植冬季覆盖作物黑麦有助于减小地下排水量和硝态氮(NO3 -N)的流失量。该研究利 用美国爱荷华州的试验数据校正和验证了DRAINMOD-N II 模型在美国寒冷地区的适用性,并模拟长期(20 a)种植冬季 覆盖作物黑麦对地下排水量和氮素运移的影响。结果表明,模型模拟地下排水量和NO3 -N 流失量时,Nash-Sutcliffe 模型 效率系数(Nash-Sutcliffe efficiency,NSE)&gt;0.65、百分比偏差(percent bias,PBIAS)在&plusmn;25%之间、均方根误差与标准 差比值(ratio of root mean square error to standard deviation,RSR)&le;0.7 均在误差范围内;模拟地下排水中NO3 -N 浓度时, NSE&gt;0.50、PBIAS 在&plusmn;15%之间、RSR&le;0.5 均在误差范围内,说明模型模拟的效果好。长期种植冬季覆盖作物黑麦可降 低排水量8.1%(2.5 cm),减小NO3 -N 流失量16.6%(6 kg/hm2),NO3 -N 流量加权平均浓度下降了8.6%(1 mg/L,以N 计),增加蒸散值5.9 %,模型模拟值与实测值拟合效果好,表明模型具有良好的水文和氮素运移模拟功能,可以模拟不 同农田管理措施对地下水和氮素运移的长期影响,为优化农田管理措施提供参考。</p
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