开发老年劳动力市场的必要性与路径研究

在平均预期寿命增加和低生育率的双重作用下,中国快速进入老龄化社会,给劳动力市场和经济持续发展带来了诸多挑战。中国老年劳动力市场具有巨大的潜力,充分利用51-64岁年龄人口将会有效增加我国劳动力供给,实现二次人口红利。在分析当前中国老年劳动力市场潜力及充分借鉴国外经验的基础上,提出了推行延迟退休政策、鼓励老年人灵活就业、加强老年劳动力培训和完善社会服务体系等开发老年劳动力市场的路径。     

陕西人口老龄化及养老保险制度的改革与完善

人口老龄化问题是人类进入21世纪不可回避的社会问题。陕西省作为经济欠发达地区,现已进入老龄化社会,但目前的养老保险制度还存在一些问题,应进一步改革与完善。合理、健全的养老保险制度是解决老龄化问题的一条重要途径。     

福建省人口老龄化发展趋势及战略对策

人口老龄化是世界人口发展的一种趋势。我国在上世纪七、八十年代推行计划生育政策,导致我国人口老龄化又具有一定的特殊性。本文从福建省老年人口发展的概况、现状入手,对其人口老龄化发展趋势进行分析与探讨,并提出若干建议。     

中国式“老有所养”的再思考

各种数据表明,中国已开始进入老龄化社会。由于传统家庭结构的变化、社会保障机制的不健全以及人口老龄化速度与经济占人口比重递增的不协调,养老已成为一个社会问题而关乎到社会生活的方方面面,人口老龄化问题势必对我国经济社会的全面协调可持续发展产生深刻的影响。妥善解决大量人口的养老需求正成为中国面临的紧迫而严峻的课题。     

Rhythms of resurrection: The comebacks of Ruth St. Denis

Ruth St. Denis (1879–1968) had one of the first and longest careers as a professional modern dancer. At age 62, she embarked on a “comeback” that lasted nearly three decades, appearing on stage and screen in the dances that had made her an international star earlier in her career. This essay examines the relationship between her well-known “Orientalism,” her feminism, her spirituality, and her perspective on aging and ageism. In particular, it brings into relief her innovative efforts to redefine dance as a feminist project at the intersection of aging and modern dance history. St. Denis converted “oriental tradition” into a feminist dance praxis, thus, staking a claim for the aging dancer under the banner of feminist politics.     

941方对衰老大鼠肝线粒体酶活性的影响

目的：通过检测衰老大鼠肝组织细胞线粒体呼吸链氧化功能。探讨大鼠衰老时肝组织细胞线粒体呼吸甸氧化功能的变化规律及941方延缓衰老的作用机制。方法：分别从4月龄（青年组）、24月龄（老龄组）和941方组大鼠的肝组织分离出线粒体，并用双缩脲法测定单位组织的线粒体蛋白，用Clark氧电极极谱法分别测定线粒体呼吸链3个氧化酶活性：NADH氧化酶（NADHOX）、琥珀酸氧化酶（SUCOX）和细胞色素氧化酶（CYTOX）。用差光谱法（联二亚硫酸钠还原减正铁氢化钾氧化的消化值）获得细胞色素a、b、c和c1含量（Cyta、Cytb、Cytc和Cytc1)。结果：与青年组大鼠比较，老年组大鼠的肝组织细胞线粒体含理有一定下和，百3个氧化酶活性却显增加，同时细胞色素含量尤其是Cytb和Cytc显升高，941方组大鼠肝组织细胞线粒体上述指标皆显高于青年组和老年组。结论：衰老大鼠肝组织线粒体酶活性与青年组有显不同，表明衰老过程中肝细胞通过某种反馈机制使残存完好的线粒体氧功能代偿性增强；９４１方使这种作用进一步增强。     

论中国养老保险体制之完善

随着社会的快速发展,人口老龄化逐渐成为中国社会中一个突出的问题。如何切实保障普通市民步入老年后的正常生活,已经成为各级政府急待解决的问题。当前,世界各国养老保障工作的主要内容是养老保险,我国在这方面仍处于起步阶段,大量问题急待完善。根据我国具体国情,结合西方国家的成功经验,笔者对我国养老保险体制相关问题的完善提出了自己的见解。     

基于HPLC的三芳甲烷类染料字迹人为老化的实验研究

目的对蓝色圆珠笔字迹在经过紫外光源老化后的独特特征进行研究,建立确认紫外灯照射的人为老化文件的方法。方法本文以蓝色圆珠笔字迹为研究对象,蓝色圆珠笔中的三芳甲烷类染料在紫外灯的照射下会吸收光子的能量加速其老化脱甲基的反应,通过适当的假设可以推导出其老化程度随时间变化的老化方程,由于目前紫外灯管几乎全部是线型结构,建立合适的坐标系,假设线型灯管能量分布均匀,且紫外线以球面波的形式传播出去,可以计算出纸面上任意一点的能量,通过纸张表面不同位置的三芳甲烷类染料的老化程度的不同来区别自然老化文件与紫外灯人为老化文件的不同。结果经过实验发现对于紫外灯人为老化文件来说甲基紫初始含量比上老化后含量的对数值与紫外灯对于该点的能量的辐出的比值为一个常数K,该K值稳定,浮动范围小,线性关系的置信度大于99%,可以认为两个参数之间存在显著地线性关系,可以证明对于老化方程的推导和能量密度分布函数的推导合理符合实际,对于自然老化文件来说则不存在这种规律。结论可以利用这种特殊的分布规律构建一个衡量这种分布的函数来定量地确认紫外灯照射的人为老化文件。     

Dating of Inkpad Seals Using the Extraction Rate Method: Preliminary Findings

Inkpad seals are often placed on important documents, and determining the date when a seal was affixed can be important to assess the authenticity of a document. In this study, three different brands of inkpads and four different types of paper were used to make diachronic samples of the seals. A double‐solvent extraction method was employed to date the inkpad seals by comparing extraction rates with inks of known age. Cyclohexane was selected as a weak solvent, and chlorobenzene was selected as a strong solvent. After testing, curves were created to show the relationship between the extraction percentage of ink and the date of the seals. The experimental results showed that the extraction rate method was applicable for the relative dating of inkpad seals in some cases where the seal was placed on the document within 6 months.     

GC Analysis of Black Gel Pen Ink Stored under Different Conditions

In many criminal and civil cases in China, the most commonly questioned documents are those written with gel pen ink. An important task for forensic document examiners is to identify whether two or more ink entries in one or more documents were written with the same ink type. The identification of the age of gel ink entries made poses an important and difficult problem for forensic document examiners. In this paper, the volatile components of gel ink were determined and the gel ink was classified by gas chromatography with a flame ionization detector. Calibration curves were created to express the relationship between the content of volatile gel ink components and the age of gel ink entries stored under natural and UV‐induced aging conditions. The correspondence between the natural and UV‐induced aging conditions was also established. The experimental results showed that GC was useful in the analysis of black gel ink and applicable for determining the relative age of gel ink entries under certain conditions.