检索结果-南通市图书馆

利用sas系统进行数据发掘——从数据到业务优势

在线全文

学校读者我要写书评

暂无评论

数理统计与管理 1997年第2期16卷 50-53页

作者：李雪胜 sas软件研究所

利用ＳＡＳ系统进行数据发掘——从数据到业务优势李雪胜编译（ＳＡＳ软件研究所）一、数据发掘和业务要求“计算机为我们提供了智慧的源泉，同时也给我们留下了洪水般的数据。”——ＧｒｅｇｏｒｙＰｉａｔｅｔｓｋｙ－Ｓｈａｐｉｒｏ... 详细信息

利用ＳＡＳ系统进行数据发掘——从数据到业务优势李雪胜编译（ＳＡＳ软件研究所）一、数据发掘和业务要求“计算机为我们提供了智慧的源泉，同时也给我们留下了洪水般的数据。”——ＧｒｅｇｏｒｙＰｉａｔｅｔｓｋｙ－Ｓｈａｐｉｒｏ什么是数据发掘？作为数据发掘（Ｄａ...

关键词： sas系统数据发掘 SEMMA 数据仓库

Wide aperture piezoceramic deformable mirrors for aberration correction in high-power lasers

在线全文

学校读者我要写书评

暂无评论

High Power Laser Science and Engineering 2016年第1期4卷 22-28页

作者： Vadim Samarkin Alexander Alexandrov Gilles Borsoni Takahisa Jitsuno Pavel Romanov Aleksei Rukosuev Alexis Kudryashov Moscow State University of Mechanical Engineering (MAMI) AKA Optics sas Institute of Laser Engineering Osaka University

The deformable mirror with the size of 410 mmstacks was developed. The results ×468 mm controlled by the bimorph piezoceramic plates and multilayer piezoceramic of the measurements of the response functions of all the actuators and of the surface shape of the deformable mirror are presented in this paper. The study of the mirror with a Fizeau interferometer and a Shack–Hartmann wavefront sensor has shown that it was possible to improve the flatness of the surface down to a residual roughness of 0.033 μm(RMS). The possibility of correction of the aberrations in high-power lasers was numerically demonstrated.

关键词： deformable mirror high-power laser piezoelectric actuator wavefront sensor

Combinatorial testing:using blocking to assign test cases for validating complex software systems

在线全文

学校读者我要写书评

暂无评论

Statistical Theory and Related Fields 2021年第2期5卷 114-121页

作者： Ryan Lekivetz Joseph Morgan JMP Division of sas CaryNCUSA

Testing complex software systems is an extraordinarily difficult *** engineers are faced with the challenging prospect of ensuring that a software system satisfies its requirements while working within a strict *** a test suite for such an endeavour can be framed as a design of experiments *** testing is a software testing methodology that may be viewed as a design of experiments approach to addressing the software testing *** extend this methodology by introducing the concept of blocking factors for a test *** provide an example,using an open source software library,to illustrate our *** of considering blocks are discussed,both in the design as well as after test execution,when fault localisation may be necessary.

关键词： Combinatorial testing covering arrays design of experiments software engineering

Advantages of QWIP technology in infrared thermal cameras

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

应用光学 2017年第2期38卷 298-303页

作者： Eric Belhaire Regis Pichon Thales Optronique sas 2 avenue Gay-Lussac Elaneourt 78995 France

Standard GaAs/AlGaAs quantum well infrared photodetectors(QWIP)have been seriously considered as atechnological choice for the 3^(rd) generation of thermal imagers in the long wave infrared band(LWIR)for some *** technology like MCT(HgCdTe)was the technology choice of the 2^(nd) generation because of its high quantum *** the paper,measurements on the QWIP technology will be presented and a comparison with alternative technology will be done.

关键词： infrared detectors image sensors quantum well infrared photodetectors(QWIP)

在线全文

学校读者我要写书评

暂无评论

sas软件在质量管理中的应用

数理统计与管理 1997年第6期16卷 50-54页

作者：刘金刚美国sas软件研究所

本文介绍了质量控制的常用方法及其在ＳＡＳ软件中的实现

关键词：控制图质量控制 sas软件质量管理

Absorption of methionine sources in animals-is there more to know?

在线全文

学校读者我要写书评

暂无评论

Animal Nutrition 2023年第1期12卷 159-170页

作者： Philippe Becquet Mercedes Vazquez-Anon Yves Mercier Dolores I.Batonon-Alavo Frances Yan Karen Wedekind Tahir Mahmood IMAA BrusselsBelgium Novus International Saint CharlesMissouriUSA Adisseo France sas AntonyFrance

This literature review evaluates the absorption of methionine (Met) sources such as 2-hydroxy-4-methylthiobutyric acid (HMTBa), its calcium salts (HMTBa-Ca), and DL-methionine (DL-Met) by focusing on the state of knowledge regarding the absorption mechanism, experimental methodology, and factors affecting their absorption. The 2 Met sources differ in mechanism and site of absorption due to differences in their chemical characteristics and enzymatic conversion. This review addresses diffusion- and transport-mediated absorption systems for amino acids and carboxylic compounds, best elucidated by in vitro, ex vivo, and in vivo experimental models. Opportunities and limitations in the use of radioisotopes to depict absorption sites as well as host and microbial metabolism are described. Physiological and environmental conditions that lead to changes in gut absorptive capacity and the impact of Met source absorption are also evaluated. This review concludes that any comparison between HMTBa and DL-Met should consider their different behaviors during the absorption phase. Hence, the chemical characteristics of these 2 molecules entail different absorption sites and mechanisms, from passive absorption in the case of HMTBa and HMTBa-Ca to active transporters for DL-Met, HMTBa, and HMTBa-Ca. In addition, the different conversion modes of these 2 molecules further differentiate their absorption modes. Considering these important differences, it is easier to understand the apparent divergence between the conclusions of existing publications. When comparing these 2 molecules, it is recommended to properly adapt to the conditions under which the absorption of Met sources is evaluated.

关键词： DL-Methionine Hydroxy-analog of methionine 2-Hydroxy-4-methylthiobutyric acid AbsorptionM ethodology

Quasi-periodic variations of low energy cosmic rays

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2016年第4期59卷 547-557页

作者： KUDELA Karel SABBAH Ismail IEP sas Kosice Slovakia Department of Natural Sciences College of Health Sciencesthe Public Authority for Applied Education and TrainingKuwait

Cosmic rays(CR)play an important role in space weather-related *** temporal variability,both of a quasi-periodic character as well as an irregular one,has been studied from ground-based direct measurements,as well as from cosmogenic nuclides,over a long *** attempt to describe the current knowledge of selected quasi-periodicities in CR flux in the energy range above the atmospheric threshold,from direct *** power spectrum density(PSD)of the CR time series as measured by neutron monitors(NMs)and by muon detectors has a rather complicated *** with the shape(slope)of the PSD,knowledge of the contribution of quasi-periodic variations(q-per)to the CR signal is of importance for the modulation,as well as for checking the links of CR to space weather,and/or to space climate *** rotation of the Earth and solar rotation cause two types of mechanisms behind the certain q-per observed in secondary CR on the Earth’s *** activity and solar magnetic field cyclicities contribute to the q-per signals in CR if studied over a longer *** complexity of the spatial structure of the interplanetary magnetic field(IMF)and its evolution within the heliosphere,in addition to the changes in the geomagnetic field,cause variability in contributions of the q-per in *** spectra are useful tools for checking the fine structure of q-per and their temporal *** a long time NMs and muon telescopes provide information about q-per in CR.

关键词： cosmic rays periodicities neutron monitors muon detectors

Use of a Model of a Blood-Induced Bruise for the Evaluation of Formulations on Bruising

在线全文

学校读者我要写书评

暂无评论

Journal of Cosmetics, Dermatological Sciences and Applications 2015年第1期5卷 7-14页

作者： Sophie Robin Carol Courderot-Masuyer Helene Tauzin Sylvain Harbon Marlene Chavagnac-Bonneville Benoit Cadars Eric Jourdan Sandra Trompezinski Philippe Humbert bioexigence sas Espace LafayetteBesanconFrance Plastic Surgery Saint-Vincent ClinicBesanconFrance Laboratoire Bioderma LyonFrance Naos Group Recherche Aix-en-ProvenceFrance Laboratory of Cutaneous Biology Department of DermatologyUniversity of Franche-ComteBesanconFrance

Esthetic treatments can induce swelling and bruises. Thus, a treatment that would prevent or hasten the resolution of bruising should be very useful. Generally, the regression of bruising was conducted with patients or animals models. So we decided firstly to develop an ex vivo model in order to test antibruising properties of topical formulations and secondly to evaluate a curative effect of a cream (mixture of arnica extract and apigenin) in comparison with a positive control (vulnerary cream) and also to estimate the preventive interest of this cream. The results showed that the injection of 25 μl of blood into the dermis of skin fragments was sufficient to create a model of induced-bruise. The duration of 24 hours was chosen to compare the effects of actives on the decrease in the size of the bruise. Joint effects of a pretreatment and a treatment of a mixture of arnica extract and apigenin decreased significantly the area of bruising compared to the treatment group, the control group and the positive control group. Many topical products claim to improve bruising on their package label. Our model can demonstrate their efficacy and determinate the best topical antibruising formulation. The mechanism involved in anti-inflammatory activity of active compounds of topical formulations is often not fully understood. Our blood-induced model may bring some responses through the study of mediators of the inflammation.

关键词： Bruise Apigenin Arnica Skin Explants

Fabrication and in vivo 2-photon microscopy validation of transparent PEDOT:PSS microelectrode arrays

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Microsystems & Nanoengineering 2022年第4期8卷 183-190页

作者： Gerwin Dijk Attila Kaszas Jolien Pas Rodney Philip O’Connor Mines Saint-Etienne Centre CMPDepartment of BioelectronicsGardanne 13541France Panaxium sas Aix-en-Provence 13100France

Transparent microelectrode arrays enable simultaneous electrical recording and optical imaging of neuronal networks in the *** made of the conducting polymer poly(3,4-ethylenedioxythiophene)doped with polystyrene sulfonate(PEDOT:PSS)are transparent;however,device fabrication necessitates specific processes to avoid deterioration of the organic ***,we present an innovative fabrication scheme for a neural probe that consists of transparent PEDOT:PSS electrodes and demonstrate its compatibility with 2-photon *** electrodes show suitable impedance to record local field potentials from the cortex of mice and sufficient transparency to visualize GCaMP6f-expressing neurons underneath the PEDOT:PSS *** results validate the performance of the neural probe,which paves the way to study the complex dynamics of in vivo neuronal activity with both a high spatial and temporal resolution to better understand the brain.

关键词： material. transparent microelectrode