Classification of marine diatoms using pigment ratio suites

Diatoms are widely distributed in many temperate areas and some species frequently form extensive blooms in spring. Hence, monitoring the variations of specific genera or species of diatoms is necessary for studying phytoplankton population dynamics in marine ecosystems. To test whether pigment ratios can be used to identify diatoms at a below-class taxonomic level, we analyzed 14 species/strains of diatoms isolated from Chinese seas using high performance liquid chromatography （HPLC）. We normalized all pigment concentrations to total chlorophyll a to calculate the ratios of pigment to chlorophyll a, and calculated the ratios between accessory pigments （or pigment sums）. Cluster analysis indicated that these diatoms could be classified into four clusters in terms of three accessory pigment ratios： chlorophyll c2： chlorophyll Cl, fucoxanthin：total chlorophyll c and diadinoxanthin：diatoxanthin. The classification results matched well with those of biological taxonomy. To test the stability of the classification, pigment data from one species, cultured under different light intensities, and five new species/strains were calculated and used for discriminant analysis. The results show that the classification of diatom species using pigment ratio suites was stable for the variations of pigment ratios of species cultured in different light intensities. The introduction of new species, however, may confuse the classification within the current scheme. Classification of marine diatoms using pigment ratio suites is potentially valuable for the fine chemotaxonomy of phytoplankton at taxonomic levels below class and would advance studies on phytoplankton population dynamics and marine ecology.

Secure and Light Weight Elliptic Curve Cipher Suites in SSL/TLS

In the current circumstance,e-commerce through an online banking system plays a significant role.Customers may either buy goods from E-Commerce websites or use online banking to move money to other accounts.When a user participates in these types of behaviors,their sensitive information is sent to an untrust-worthy network.As a consequence,when transmitting data from an internal browser to an external E-commerce web server using the cryptographic protocol SSL/TLS,the E-commerce web server ensures the security of the user’s data.The user should be pleased with the confidentiality,authentication,and authenticity properties of the SSL/TLS on both the user’s web browser and the remote E-commerce web server.E-Commerce web servers should choose the best SSL/TLS cipher suites for negotiating the user in order to attain such optimistic scenarios,as the cipher suite used in SSL/TLS plays an important role in securing E-Commerce web servers.The paper primarily focuses on analyzing the SSL/TLS cipher and elliptic curves.The paper also recommends the best elliptic curve cipher suites for E-Commerce and online banking servers,based on their power consumption,handshake execution time,and key exchange and signature verification time.

熔盐堆用U型管壳式换热器的传热与流动特性模拟分析

为更好地理解和掌握熔盐换热器的运行特征,并给熔盐堆中换热器的设计和运行累积经验,本文以美国橡树岭国家实验室10 MWt熔盐实验堆(Molten Salt Reactor Experiment,MSRE)用的主换热器为研究对象,基于该换热器的设计参数,应用管壳式换热器的理论计算方法(包括Kern方法和Bell-Delaware方法)、换热器设计软件HTRI Xchanger Suite和计算流体力学方法(Computational Fluid Dynamics,CFD)对换热器的关键性能指标(如换热系数、压降和换热功率)分别进行了计算分析,并与MSRE主换热器的实验数据进行比较分析。结果表明:两种理论计算方法(Kern方法、Bell-Delaware方法)、HTRI软件及CFD仿真模拟的结果与实验结果的差异均在可接受范围内。其中,Kern方法与MSRE实验所得的换热量相差最大,约为15%;HTRI软件模拟与MSRE实验所得的总换热系数相差最小,为0.16%。理论计算方法、换热器设计软件及CFD仿真均在不同程度上适用于熔盐-熔盐换热器设计,且CFD仿真还可以对换热器内部传热和流动细节进行直观描述。

“Instruction-Category” Approach of Test Suite Construction for Oven Embedded System

Being different from testing for popular GUI software, the “instruction-category” approach is proposed for testing embedded system. This approach is constructed by three steps including refining items, drawing instruction-brief and instruction-category, and constructing test suite. Consequently, this approach is adopted to test oven embedded system, and detail process is deeply discussed. As a result, the factual result indicates that the “instruction-category” approach can be effectively applied in embedded system testing as a black-box method for conformity testing.

The Days Hotel & Suites Beijing

A Cultural Concept Located within striking distance of Beijing's booming Central Business District, the Days Hotel & Suites Beijing also offers easy access to the art of the imperial city. Adjacent to the Panjiayuan Flea Market, where curios and folk artworks of the ancient capital are bought and traded, it is a multi-function concept of fine dining and entertainment that taps into the cultural essence of China's storied past. In the entrance to the sizeable lobby of Regal Palace Chinese Cuisine House, a...

SYSTEM ENTITY STRUCTURES FOR SUITES OF SIMULATION MODELS

We describe how to develop a suite of models in the MS4 Modeling Environment(MS4 Me).The approach employs the operation of merging of System Entity Structures supported by the environment.After construction,the suite of models can be hosted on Model Store,the cloud-based repository of models provided by MS4 systems as a basis for further collaborative model development.A suite of models,relating to Health Care is used as an example.In this paper,we review basic concepts of the SES needed to support of suites of simulation models.We then consider the concept of multiple aspects that provides more advanced capabilities to construct and manipulate suites of models.With this background,we go on to discuss a methodology for developing suites of simulation models and cloud-based technology for storing and sharing such models in a marketplace of models.Finally,we discuss future research and developments needed to bring the marketplace into common use by modeling and simulation practitioners.

Heart Failure: Organization of Care after Hospitalization at the Abidjan Cardiology Institute

Introduction: The care pathway for heart failure (HF) patients is poorly documented in sub-Saharan Africa. A multidisciplinary management reduces hospitalizations and mortality. In our context of frequent rehospitalization of heart failure patients, the objective of this study was to analyse the post-hospital follow-up health care. Methods: We conducted a prospective study in the medical department of a Heart Institute from January 1st to December 31, 2015. Patients over 18 years of age, hospitalized for heart failure, consenting and followed up on an outpatient basis for 2 years were included. Results: We collected 396 patients hospitalized for HF. The mean age was 57.4 ± 16 years with a male predominance (59.3%). Retired and unemployed people represented 27% and 16.2% respectively. During the post-hospitalization follow-up, patients who were regularly followed up represented 10.8% of the cases. 74.1% of the cases were regular patients. Patients were not followed up by the usual practitioner (58.2%). Only 94 patients had undergone a cardiovascular rehabilitation programme, of which 21.3% for exercise rehabilitation and 78.7% for therapeutic education. Patients who had attended titration sessions (n = 59) had reached optimal doses of ACE inhibitors, ARB II and beta blockers in 67.8%, 7.3% and 38.5% respectively. The rates of decompensation (73.3%) and rehospitalization (49.5%) were higher. The paraclinic check-up (ECG, X-ray, Cardiac Doppler ultrasonography, Biology) was rarely requested. The probability of survival was higher in patients regularly monitored than in those irregularly monitored. Conclusion: The organisation of care and coordination between professionals should be structured or planned. Therapeutic strategies need to be intensified in order to optimise their long-term benefits.

Adaptability analysis and optimization of log suite for uncased wellbores of shale gas reservoirs:A case study of Sichuan Basin,China

Significant progress has been made in the exploration and development of unconventional gas resources in China since the beginning of the 21st century.With a rapid increase in yield,the exploration and development of shale gas have been upgraded to a level of national strategy.Logging is one of the core technologies in gas exploration and development.However,logging technologies face the challenges of complex geological conditions and well casing environment,high temperature,high pressure,and strong heterogeneity.Despite the rich experience accumulated,unified understanding and implementation specifications are yet to be established for shale gas well logging.Given the analysis and comparison of the effectiveness and adaptability of logging technologies at different stages of shale gas exploration and development for the Sichuan Basin,this study optimizes the log suite to meet the demand for highefficiency exploration and development of shale gas.According to the adaptability analysis of shale gas log suite,the mandatory logging items of exploratory wells should include caliper log(CAL),natural gamma ray spectrometry(NGS)log,spontaneous potential(SP)log,directional survey,borehole compensated sonic log,litho-density log(LDL),compensated neutron log(CNL),dual laterologmicrospherically focused log/dual induction-laterolog log/array induction log,temperature log,elemental capture spectroscopy(ECS)log,formation microimager(FMI)log,and array sonic log.The log suite of appraisal wells is almost the same as that for exploratory wells,excluding the ECS log and microresistivity scanning imaging.Meanwhile,for the logging of horizontal/highly-deviated holes,the log suite of vertical wells should be referred to according to specific well conditions.

基于三维反问题设计理论之不同载荷的离心压缩机性能研究

使用基于三维反问题设计理论的TURBOdesign Suite软件设计出两款相同工况、不同叶片载荷的离心压缩机叶片。并通过ANSYS CFX软件对两款设计的叶片进行流场仿真,研究不同形式的叶片载荷加载对离心压缩机叶片工况点和非工况点的影响。通过流场分析,对比不同载荷下离心压缩机叶片的二次流损耗、前缘激波损耗以及三维流线。研究结果发现,当叶片载荷为“轮毂层及中间层后加载,轮盖层前加载”形式时,该设计拥有更好的二次流抑制效果及更高的设计点效率,同时性能曲线上高流量点的效率也有明显提升。

Guideline of Test Suite Construction for GUI Software Centered on Grey-Box Approach

In this paper, the test suite construction for GUI (Graphical User Interface) software may be executed centered on grey-box approach with the prior test design of window access controls for unit testing, including front-end method of white box and follow-up black box method for integration testing. Moreover, two key opinions are proposed for the test suite construction for GUI software, the first one is that the “Triple-step method” should be used for unit testing with the prior disposing of data boundary value testing of input controls, and another one is that the “Grey-box approach” should be applied in integration testing for GUI software with necessary testing preparation in the precondition. At the same time, the testing of baseline version and the incremental testing should be considered for the test case construction to coordinate with the whole evolution of software product today. Additionally, all our opinion and thought are verified and tested with a typical case of GUI software—PQMS (Product Quality Monitoring Software/System), and results indicate that these methods and specific disposing are practical and effective.

汽车开关旋钮的磁手感结构设计及仿真

为了能够降低传统汽车内饰中机械式旋钮的摩擦感、手感下降、磨损等带来的用户较差的体验,在此设计几种采用磁吸力实现旋钮手感的方案。设计过程中运用ANSYS Electronics Suite电磁仿真软件及时对方案进行校核,排除不合理设计,最终通过样件制作、测试,筛选出可行方案后用于真实产品设计。结果表明:磁手感旋钮的实现方式较传统结构更加简单,且输出的扭矩曲线及扭矩值的可控性更强。同时,也证明ANSYS Electronics Suite电磁仿真软件对此类产品的仿真结果是可信的。

基于TRIZ轮式机器人驱动轮的研究

根据亚太机器人大赛规则,要求机器人车轮与地面有较大的摩擦力,以保证机器人在规定的时间内完成比赛任务。文中以TRIZ为理论基础,应用CREAX Innovation Suite软件对驱动轮的摩擦问题进行了分析,根据CREAX提供的问题解决流程及相关的TRIZ创新原理进行驱动轮的方案设计,通过实验分析验证,最终得到了驱动轮的理想设计方案。

华北平原地下水中有机物淋溶迁移性及其污染风险评价

根据有机污染物的物理化学性质,估算了91种有机物在土壤中的半衰期和有机碳吸附系数,并分析了这些有机物在土壤中的淋溶迁移性。结果表明:对于所研究的污染物,它们的地下水污染指数与其有机碳吸附系数有着很好的负相关性,这为评价地下水中主要有机污染物的污染指数(淋溶迁移性)提供了简易方法。所评价的91种有机物中,38种具有高淋溶和迁移性,易对含水层造成较大范围的污染。通过分析发现,华北平原区域地下水中主要有机物的检出率与其淋溶迁移性有着一定的相关性。因此,地下水污染指数法的应用将有助于预测有机物对地下水的污染风险。

三氯甲烷在浅层地下水中的赋存特征及迁移淋溶性研究

伴随着世界各地工业进程的不断加速,地下水有机污染呈现愈加严重的态势。对滹沱河冲积平原390组浅层地下水样品进行测试、分析和研究。结果表明:(1)研究区浅层地下水三氯甲烷检出率高达15.64%;(2)三氯甲烷集中检出区域均位于工业集散地及排污河流沿线;(3)三氯甲烷的检出点分布同研究区包气带岩性特征有较好的一致性;(4)三氯甲烷在土壤和沉积物中的地下水污染指数(GUS)分别为4.71和6.31,即为高淋溶迁移,相对于其他有机组分,其GUS也较高,极易污染地下水和土壤。

基于可见光红外成像辐射仪数据的地表温度反演

地表温度是农业旱灾和作物估产模型的重要参数。该文针对可见光红外成像辐射仪(visible infrared imager radiometer suite,VIIRS)传感器缺乏水汽通道的特点,联合Aqua卫星搭载的中分辨率成像光谱仪(moderate-resolution imaging spectroradiometer,MODIS)数据提出了基于分裂窗算法的VIIRS地表温度反演方法。对地表发射率和大气透过率这2个关键参数的获取进行了详细分析,选取了处于作物生长期的2013年6月4日VIIRS数据进行实例验证分析。结果表明,与全国气象数据比较该文算法在大尺度上能够较好地获取中国地表温度;与MODIS数据温度产品在高温产粮区比较,该文算法与MODIS温度产品精度较一致,两者差值小于1 K。使用MODTRAN(moderate resolution transmission)软件对算法的精度进行了模拟评价验证,分析表明:在一定的水汽和地表发射率条件下,算法反演精度一般保持在1 K内,平均误差为0.431 K,误差标准偏差为0.247 K。能够为农业干旱、作物长势等农情信息监测提供所需的地表温度数据。

高校图书馆嵌入式知识服务新平台——Touchdown Suite

Touchdown Suite是美国约翰·霍普金斯大学Welch医学图书馆推出的一项服务,旨在在用户工作的空间中寻求新的用户,并向他们提供便捷的资源和服务。本文研究其如何从用户使用的角度嵌入用户个人信息环境,提供物理空间的嵌入并提供知识服务,以期为我国高校图书馆开展嵌入式知识服务提供借鉴和参考。

EUROPattern全自动免疫荧光核型和滴度判读系统检测抗核抗体的应用评价

目的:评价EUROPattern全自动免疫荧光核型和滴度判读系统对抗核抗体荧光片的应用价值。方法:选取苏州市立医院本部血清标本202例,其中包括确诊的177例自身免疫病患者血清标本及25例健康体检者血清标本。应用Sprinter XL全自动间接免疫荧光仪检测抗核抗体,分别采用EUROPattern Suit全自动判读系统以及传统目视判读方法对两组血清标本抗核抗体的核型及滴度进行分析,比较两种方法的分析结果并进行评价。结果:①全自动判读系统和目视判读方法在202例血清标本中阳性率分别为85.6%和86.1%,两种判读方法阳性率无显著差异(P=0.886);比较两种方法的性能验证指标,灵敏度、特异性、准确度、阳性预测值和阴性预测值,其差异均无显著性(P均>0.05)。②全自动判读系统和目视判读方法显示荧光核型同时阳性169例,同时阴性24例,总体符合率为95.5%,一致性检验Kappa值为0.816。③全自动判读系统与目视判读方法的荧光核型分布显示,其总体一致率为85.1%;不同荧光模式一致率由高到低为核点型(100%)、着丝点型(93.8%)、均质型(91.7%)、核仁型(88.5%)、胞质型(84.6%)、颗粒型和混合型(均80.0%)。④除混合型外,两种方法滴度判读均有较高的符合率(81.8%~100.0%)。结论:与传统目视判读结果比较,全自动荧光判读系统对抗核抗体核型和滴度判读具有较高的灵敏度、特异性及符合率,可以较好地满足临床需求。

Vector NTI Suite在分子生物学领域的应用

有许多软件可以帮助分子生物学工作者解决一些他们日常实验室工作中遇到的问题。Vector NTI Su ite是一种高度集成、功能齐全的分子生物学应用软件,它可以对核酸、蛋白质等分子进行大量的操作和分析,以及建立和管理生物数据库。重点对Vector NTI Su ite软件的概况、应用现状及其在分子生物学领域的应用进行综述与探讨。

国外典型竞争情报软件比较研究

竞争情报软件能提高竞争情报团队的效率。为了剖析国外竞争情报软件的技术和功能特性，文本选取了五个典型的国外竞争情报软件，从技术、功能、灵活性等层面对它们作了比较研究；通过比较研究，对我国竞争情报软件的研发提出了建议。

成人岛叶纤维连接的显示和分析

目的：显示和分析岛叶与端脑额叶、顶叶、颞叶、枕叶及边缘系统和丘脑等的连接情况.方法：联合应用DSI-studio和Brian Suite软件对20例脑连接组项目的T1加权数据和磁共振弥散进行处理,通过纤维束重建、脑结构配准、纤维束连接分析等过程,分析岛叶与脑其他结构连接情况.结果：Brian Suite软件生成的脑连接分析图中可见左右两侧岛叶与额叶、顶叶、颞叶、边缘系统、丘脑、基底核均有联系.通过三维纤维束重建,可见连接岛叶与其他脑区的纤维束有钩束、下额枕束、外囊、上额枕束、弓状束等.结论：通过成人脑岛叶与其他脑区纤维联系的研究,可为后续岛叶相关功能和临床研究提供结构和方法学上的帮助.