Affecting Geospatial Technologies: Toward a Feminist Politics of Emotion*

Building on earlier contributions to feminist understanding of geospatial technologies (GT), I seek to further develop feminist perspectives on GT along new directions. I argue that an attention to the importance of affect (feelings and emotions) and the performative nature of GT practices offers a distinctive critical edge to feminist work on GT. I emphasize the need for GT practitioners to contest the dominant meanings and uses of GT, and to participate in struggles against the oppressive or violent effects of these technologies. I argue that only when emotions, feelings, values, and ethics become an integral part of our geospatial practices can we hope that the use of GT will lead to a less violent and more just world.     

Ultrastructure of Single Cells ,Callus—like and Monos—pore—like Cells in Porphyra yezoensis Ueda on Semi—slid Culture Medium

It had been demonstrated that individual or protoplasts isolated from Porphyra thallus by enzyme could develop into normal leafy thalli in the same way as monosproes,and that isolated cells develop in different way in liquid and on semi-solid media,The authors observed the ultrastructure of isolated vegetative cells cultured on semi-solid media and compared them with those of monospores and isolated cells cultured in liquid media,The results showed that subcellular struce-tures were quite different among cells in different conditions.In their development,isolated cells on semi-solid media did not show the characteristic subcellular eature of monospore formation ,such as production of fibrous vesicles,Callus-like cells formed on semi-solid media underwent a distinctive modification in cellular organization.They developed characteristic cell inclusions and a special 2-layer cell covering,Golgi bodies,ER ,starch grains,mitochondria,Vaculoes were not commonly found in them.     

Reproductive morphology ofEucheumagelatinae (Esper) J. Agardh (Solieriaceae,Gigartinales, rhodophyta)

Eucheuma gelatinae (Esper) J. Agardh has vegetative and reproductive features distinguishing it from other species ofEucheuma. The occurrence of reproductive nemathecia containing carpogonial branches, auxiliary cells and post-fertilization stages including gonimoblast and pericarp initiation, fusion cell formation stages and carposporophyte development are described and ilustrated for the first time for this species. Contribution No. 2380 of the Institute of Oceanology, Chinese Academy of Sciences.     

几个极高光度IRAS星系的射电频谱

使用澳大利亚致密阵（ATCA）对一个红外光度高达10^11.8-10^12.8L⊙的IRAS星系样本进行了8.6,4.8,2.4和1.4GHz的射电观测，发现其中有4个源在高频为陡谱，在较低频率上流星降低，呈峰状，峰值在几GHz。讨论了造成频谱倒转的两种可能机制：同步自吸收和free-free吸收。通过对00199－7426，02587－6336，07020－5423和21547－5823的频谱分析，我们认为free-free吸收可能导致了低频倒转谱的形成。通过对观测数据的模拟，获得了这几个源的有关物理参量。     

空间太阳望远镜1m主镜支撑结构的研究

本文对正在预研中的空间太阳望远镜的关键部件之一1m主镜，提出一种合理的支撑结构系统，此系统可以兼顾空间太阳望远镜光学系统的地面装校调试的有效性和火箭发射力学环境中的安全性以及入轨后正常观测时的高精度性。     

星系团PKS 0745-191中射电气体对X射线气体的加热

对星系团中相对论性粒子的能量演化做了数值计算，在此基础上，联合分析Chandra卫星数据和VLA射电观测结果，计算了星系团PKS0745-191中高能射电气体对X射线气体的加热作用，发现在射电气体幂律谱能量下限为0.001erg时，射电气体对X射线气体的加热不足以补充X射线气体的辐射能损．然后在计算研究了不同能量下限时射电气体对X射线气体的加热作用，并估计了射电气体的能量下限．     

多光谱卫星云图的高维特征聚类与降水天气判别

基于静止气象卫星（GMS-5）多光谱云图的天气采样数据，分别对各样本数据在红外、水汽及可见光通道的灰度、梯度和纹理高维特征空间的投影点进行聚类分析，以确定诸天气样本在特征空间中的类属区域，进而用其对云图进行天气区的判别分类。针对传统聚类方法存在的缺点，本文采用了模糊C均值聚类（FCM）、遗传算法（GA）和模糊减法聚类（FSC）相互交叉、优势互补的思想，既克服了GA／FCM算法局部／全局寻优的不足，又可客观确定出聚类中心数目。对高维特征空间中的重叠和交叉部分的样本点类属，通过计算其与空间中各聚类中心点的欧氏距离来予以甄别，最后得到高维特征空间中各天气的类属域，实况云图中诸像素点通过计算和判断其灰度-梯度特征量在高维空间中的投影点落区位置，即可确定其天气类属，进而实现对天气区的自动分类。试验结果表明，该方法具有良好的分类效果，判别结果与天气实况基本一致。     

基于中尺度气象模式（MM5）计算GNSS对流层水汽延时

基于中尺度气象模式MM5得到的三维气象场数据,建立了渤海湾地区的湿折射率场。采用切比雪夫多项式和微积分等数学方法计算了GNSS卫星信号传播方向上的水汽延时。通过与Bernese软件处理的GNSS结果比较分析来看,二者天顶总延时相差最大不超过2cm,在1cm附近波动。得到的湿延偏差在7mm左右,最大相差10mm.MM5模式积分计算的水汽延时结果可信,具有较理想的精度。     

基于移动测量数据的公路路况调查软件设计与实现

针对国内路况调查工作效率不高、周期长等问题,提出了将移动测量系统应用于公路路况调查的实现方案并分析其技术优势,同时,根据路况调查的业务特点,在数据准备、数据组织、系统设计和业务管理等方面进行了一些研究和尝试,实现了一个C/S架构的移动测量公路路况调查系统,最后对本应用的现实意义做出了总结.     

The factors controlling the partitioning of polybrominated diphenyl ethers and polychlorinated biphenyls in the water-column of the Pearl River Estuary in South China

In this study, the distribution and partition of polybrominateddiphenyl ethers (PBDEs) and polychlorinated biphenyls (PCBs) in water from the Pearl River Estuary were investigated. A seasonal dependence for dissolved and particle phase PCB and PBDE levels was observed. A high dissolved phase level occurred in the dry season. The positive correlation between POC content in the particles and phase distribution coefficients (K_p) suggested that POC may play an important role in determining the partition of PBDEs and PCBs. A linear correlation between the observed log K_OC and log K_OW for PBDEs and PCBs was found with slopes less than one. The observed log K_OC values were lower than the predicted log K_OC values for PBDEs (except for BDE28). The log K_OC values were higher than the predicted values for PCBs. A combination of sorption to colloids (10-98% for PBDEs and less than 25% for PCBs) and adsorption to BC was responsible for this observation.