Non-linear Causality between the Stock and Real Estate Markets of China and Western European Countries

本研究我们使用非对称门坎协整模型检定来探讨中国与西欧国家房地产市场与股票市场是否呈现任何显着非对称之调整关联性，实证结果指出深圳股票综合指数与房地产价格指数存在长期非线性之关联性，我们更进一步使用Granger因果关系检测短期内中国财富效果之假设，我们发现，在长期情况下;在门坎之上存在信用价格效果而在门坎之下则存在财富效果，此结果亦即两个市场存在双向回馈之因果关系，代表中国在在股票与房地产市场之价格传递效果长期下是呈现非线性与非对称之现象。接着，我们再进一步发现在西欧国家长期之下也存在门坎效果，代表股票市场与房地产市场存在单向或双向之因果关系，亦即在门坎上下，西欧国家这两个市场存在财富效果与信...In this study, we use the asymmetrical threshold cointegration tests to investigate whether any significant relationship and asymmetric adjustment exists between real estate and stock markets in China and Western European countries. Our result indicates that Shenzhen composite index and real estate price index existed long-run nonlinear relationship. Furthermore, from Granger-Causality test is in ...学位：博士后院系专业：经济学院金融系_国际金融学学号：BH170023

Multistage Inverse Modeling Method and Its Application in Gelatin Solution Production Process

针对一类串联型工业大系统,提出了多阶段逆模型建模方法:将串联大系统分为若干个阶段,以产品质量指标作为过程设计的起点,用逆向推理的方法,建立各个阶段的逆模型;根据产品质量指标的要求,直接求出各个阶段的控制变量设定值。将该方法应用于胶液生成过程的软测量建模,采用多阶段建模方法和整体建模方法分别建立了基于bP神经网络的胶液生成过程逆模型,并从误差平方和MSE和命中率等方面对两种建模方法的建模精度进行了比较。结果表明,多阶段建模方法可以获得更高的建模精度;同时,具有更大的灵活性;而且逆模型方法可以根据质量指标求出控制变量设定值,更便于实际应用。Aiming at a class of serially connected industrial system,a novel multistage inverse modeling method was presented.The large-scale system is divided into several stages.Using specified product qualities as a starting point for process design.By backward reasoning the required process conditions and the control variable set points of all stages for processing system were found.The inverse models of gelatin solution production process were established based on the BP neural network by using multistage modeling method and whole stage modeling method,and modeling accuracy comparison were made from error and hit rates.The simulation results indicate the model based on the proposed method has smaller error and higher hit rates.Meanwhile,the break down of the sub models increases the flexibility of model development and reduces the effort to change the model when the sub models change.And the required process conditions and the control variable set points of all stages for processing system were found according to specified product qualities.Thus,it is easy to be really applied.This method has been successfully applied on improving the gelatin solution production process and product quality control.厦门市科技计划项目(3502Z20083028);国家自然科学基金项目(50843059);福建省教育厅科技项目(JA08218

Action recognition based on the angle histogram of key parts

当前的姿态表示的行为识别方法通常对姿态的准确性做了很强的假设,而当姿态分析不精确时,这些现有方法的识别效果不佳。提出了一种低维的、鲁棒的基于关键肢体角度直方图的人体姿态特征描述子,用于将整个动作视频映射成一个特征向量。同时,还在特征向量中引入共生模型,用以表示肢体间的关联性。最后,设计了分层的SVM分类器,第1层主要用于选择高判别力的肢体作为关键肢体,第2层则利用关键肢体的角度直方图并作为特征向量,进行行为识别。实验结果表明,基于关键肢体角度直方图的动作特征具有较好的判别能力,能更好地区分相似动作,并最终取得了更好的识别效果。The current pose-based methods usually make a strong assumption for the accuracy of pose,but when the pose analysis is not precise,these methods cannot achieve satisfying results of recognition.Therefore,this paper proposed a low-dimensional and robust descriptor on the gesture feature of the human body based on the angle histogram of key limbs,which is used to map the entire action video into an feature vector.A co-occurrence model is introduced into the feature vector for expressing the relationship among limbs.Finally,a two-layer support vector machine( SVM) classifier is designed.The first layer is used to select highly discriminative limbs as key limbs and the second layer takes angle histogram of key limbs as the feature vector for action recognition.Experiment results demonstrated that the action feature based on angle histogram of key limbs has excellent judgment ability,may properly distinguish similar actions and achieve better recognition effect.国家自然科学基金资助项目(61202143); 福建省自然科学基金资助项目(2013J05100;2010J01345;2011J01367); 厦门市科技重点项目资助项目(3502Z20123017

Investigation on the iodine status among the population in rural and urban areas of Xiamen in 2013

目的了解碘盐新标准实施后农村和城市人群的碘营养现况,为有效落实科学补碘防控策略提供依据。方法在农村和城市调查点各抽取1个镇的1个村,在每个村采集自来水厂出厂水和末梢水各2份;抽取30户以上居民,采集各户家庭食用盐,用3日称量法测算各户居民人均食盐摄入量;抽取18-45岁成人50名以上,采集尿样。在抽中的镇随机选择8-10岁儿童(男女各半)、孕妇和哺乳期妇女各50名以上,采集尿样。测定盐碘、尿碘和水碘含量。结果农村和城市自来水末梢水水碘含量均值分别为4.5μg/L和6.0μg/L;居民人均每日食用盐摄入量中位数分别为7.0和5.6g;8~10岁儿童尿碘中位数分别为152.0和181.2μg/L;哺乳妇尿碘中位数分别为108.3和107.7μg/L;18-45岁成人尿碘中位数分别为121.1和147.4μg/L;孕妇尿碘中位数分别为116.0和112.2μg/L,尿碘含量低于150μg/L的比例分别达67.9%和64%;除农村人均每日食用盐摄入量高于城市,农村18-45岁成人尿碘水平低于城市外,其他指标农村和城市间差异无显著性。结论厦门市仍是缺碘地区,在现有碘盐标准下,8-10岁儿童、18-45岁成人、哺乳期妇女的碘营养处于适宜水平,但孕妇的碘营养不足,要开展针对孕期人群的碘营养监测和指导,杜绝碘缺乏所造成的危害。Objective To gain knowledge of the iodine status among the population in rural and urban areas after the implement of new standard for edible salt and to provide scientific evidence for the initiative of the iodine supplement strategy. Method 1 village / community was selected randomly from rural and urban area as research site respectively. 2 samples of treated water and tap water were collected respectively in both sites, 30 + houses were enrolled randomly and edible salt samples were collected. 3days weighed record was employed to estimate average salt daily intake. Urine sample was collected from 50 + adults aged from 18 to 45. Identical sample was also collected from 50 + children aged from 8 to 10( same amount of subjects in both genders),pregnant women, and lactating women respectively. Iodine level of water, salt, and urine was determined by laboratory assay.Results The iodine concentration of tap water in rural and urban areas was 4. 5 μg / L and 6. 0 μg / L,respectively. The median of average iodine intake in rural and urban areas was 7. 0 g and 5. 6 g, respectively. The median in urine iodine was 152. 0 μg / L and 181. 2 μg / L,respectively. This measurement in lactating women was 108. 3 μg / L and 107. 7 μg / L,respectively. And it was121. 1 μg / L and 147. 4 μg / L in adults aged 18 to 45, respectively. As for the pregnant women, the iodine level reached 116. 0μg /L and 112. 2 μg /L,respectively. The proportion of subjects has urine iodine level less than 150 μg /L reached 67. 9 % and 64 %, respectively. The average salt intake in rural area was higher than urban significantly, and the urine iodine level in adults aged 18 to 45 from rural area was significantly lower than urban. No significance was found in other comparison. Conclusion Through our investigation,Xiamen is still an iodine deficiency area. Under the implement of new edible salt standard, the iodine status in children aged 8 to 10, adults aged 18 to 45 and lactating women was adequate, however, we found that pregnant women enrolled in our study have iodine deficiency in some degrees. Therefore the iodine surveillance and dietary guidance should be performed among pregnant women to eliminate the harm caused by iodine deficiency

ST段抬高型急性心肌梗死院前溶栓治疗中国专家共识

急性心肌梗死仍然严重威胁我国人民健康,在我国广大城乡地区,形势更为严峻[1,2]。及时救治急性心肌梗死患者,降低死亡率和保护心脏功能刻不容缓。鉴于我国的实际情况,院前溶栓治疗在大城市以外的城乡地区具有重要意义。为此,中国医师协会胸痛专业委员会及中国医学救援协会心血管急救分会专门组织有关专家制订了本共识,旨在帮助院前医疗急救人员对急性心肌梗死患者选择最佳

Damage to mangroves from extreme cold in early 2008 in southern China

通讯作者Author for correspondence (E-mail: [email protected])2008年初,我国南方19个省经历了50年一遇的持续低温雨雪冰冻天气。极端气候对华南沿海各省的红树林区造成不同程度的危害。2008年3月,在我国南方各省红树林区的10个代表性地点,对这次寒害造成的红树植物伤害程度进行了系统的调查。结果表明:冬季低温对红树林的影响极为显著,特别是在低纬度的海南、广西和广东湛江,由于极端低温正值夜间退潮,对红树林的影响更为显著;在纬度较高的福建,本地红树种类秋茄(Kandelia obovata)、桐花树(Aegiceras corniculatum)和白骨壤(Avicennia marina)及引种的木榄(Bruguiera gymnorrhiza)等,由于长期适应于冬季较低的气温或在种植前经过抗寒锻炼,具有较强的抗寒能力。各地主要红树植物中,广布种秋茄、桐花树和白骨壤最为耐寒,其耐寒性均大于红树科的木榄、海莲(Bruguiera sexangula)和红海榄(Rhizophora stylosa)。海桑(Sonneratia caseolaris)对温度的敏感性最强,抗寒能力最低,因此,即使在其原产地海南也受到较为严重的寒害,在纬度更高的引种地出现大面积受害甚至全部死亡,而从孟加拉国引种的无瓣海桑(Sonneratia apetala)却显示出一定的抗寒能力。同一地点的红树植物幼苗的抗寒能力低于大树。此次寒害也造成了苗圃场的种苗大量死亡,成熟的植株提前落花落果,这势必会影响后继一两年内红树林的自然更新和人工造林。因此,在未来红树林造林或人工引种中,一定要考虑到红树植物的抗寒能力。国家自然科学基金(30671646和30700092);厦门大学“闽江学者”启动基

Robot's Signpost Navigation Based on Selective Attention

在科学技术正迅猛发展的今天，移动机器人已经广泛应用于人们的生产和生活实践当中，并且发挥着越来越重要的作用，甚至成为人类不可或缺的忠诚的朋友和帮手。因此对移动机器人的关键技术的研究是十分必要的。本文针对移动机器人的路标导航，障碍回避，视觉注意等关键技术进行了研究，文章最后融合这三方面技术使机器人运用类似人类视觉注意机制实现较高智能化的导航。 文章首先对移动机器人实验的传感器选择及其原理，以及路标导航和避碍回避策略进行了探讨和研究，采用基于视觉图像信息的机器人导航和基于红外测距的障碍回避。利用机器人行走过程中红外感器实时感知的距离信息实现障碍回避，通过实时分析机器人获取到的图像使其识别路标颜色并...In this time of rapid development in science and technology, mobile robots have been widely used in human’s production and daily life, playing an increasingly important role, becoming the human’s loyal friend and helper. Therefore, researching the key technologies of mobile robot is necessary. This paper conducts a research in the obstacle avoidance, signpost navigation and visual attention of mob...学位：工学硕士院系专业：信息科学与技术学院自动化系_模式识别与智能系统学号：2322007115423

Revisiting purchasing power parity for East Asian countries using the rank test for nonlinear cointegration

This study applies a simple and powerful nonlinear rank test, proposed by Breitung (2001) to test the validity of long-run Purchasing Power Parity (PPP) in a sample of East Asian countries over the period March 1985-September 2008. The empirical results indicate that PPP holds for all of East Asian countries studied and the nominal exchange rate, domestic Consumer Price Index (CPI) and the US CPI are all linearly interrelated with the exception of China. Our results have important policy implications for these East Asian countries under study

聚乙二醇共价修饰药用蛋白质的分析方法

聚乙二醇共价修饰蛋白质具有重要的生物学应用意义。分析聚乙二醇共价修饰蛋白质对确定产物的修饰程度是必要的，近年来渐成研究热点。主要介绍了聚乙二醇共价修饰蛋白质的各种分析方法与其优缺点，同时对不同原理的分析方法进行了分类比较

核糖核酸酶特殊生物学功能及药理作用研究新进展

核糖核酸酶作为一种模型蛋白被普遍用于分子生物学研究。近年来的一系列研究表明，核糖核酸酶及其结构类似物具有许多重要的生物学功能，如控制肿瘤血管生成，杀灭肿瘤细胞及抑制病毒（包括HIV－1病毒）的复制等，引起人们的广泛关注，核糖核酸酶家族大多具有裂解RNA的活性，因此可与抗体连接构成具有显著的靶向性及人源化的免疫毒素，被用来杀伤癌细胞及其它异常增殖细胞。我们将对有关核糖核酸酶家族生物学功能的新发现及研究进展作一介绍