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1虚拟 nonenhanced 腹的双精力的 MDCT : 图象特征的分析显示文摘 AIM:To evaluate abdominal and pelvic image characteristics and artifacts on virtual nonenhanced(VNE) images generated from contrast-enhanced dual-energy multidetector computed tomography(MDCT)studies.METHODS:Hadassah-Hebrew University Medical Institutional Review Board approval was obtained;22 patients underwent clinically-indicated abdominal and pelvic single-source dual-energy MDCT(Philips Healthcare,Cleveland,OH,USA),pre-and post-IV administration of Omnipaque 300 contrast(100 cc).Various solid and vascular structures were evaluated.VNE images were generated from the portal contrast-enhanced phase using probabilistic separation.Contrast-enhanced-,regular nonenhanced(RNE)-,and VNE images were evaluated with a total of 1494 density measurements.The ratio of iodine contrast deletion was calculated.Visualization of calcifications,urinary tract stones,and image artifacts in VNE images were assessed.RESULTS:VNE images were successfully generated in all patients.Significant portal-phase iodine contrast deletion was seen in the kidney(61.7%),adrenal gland(55.3%),iliac artery(55.0%),aorta(51.6%),and spleen(34.5%).Contrast deletion was also significant in the right atrium(RA)(51.5%)and portal vein(39.3%),but insignificant in the iliac vein and inferior vena cava(IVC).Average post contrast-to-VNE HU differences were significant(P<0.05)in the:RA-135.3(SD 121.8),aorta-114.1(SD 48.5),iliac artery-104.6(SD 53.7),kidney-30.3(SD 34.9),spleen-9.2(SD 8.8),and portal vein-7.7(SD 13.2).Average VNE-toRNE HU differences were significant in all organs but the prostate and subcutaneous fat:aorta 38.0(SD 9.3),RA 37.8(SD 16.1),portal vein 21.8(SD 12.0),IVC 12.2(SD 11.6),muscle 3.3(SD 4.9),liver 5.7(SD 6.4),spleen 22.3(SD 9.8),kidney 40.5(SD 6.8),and adrenal 20.7(SD 13.5).On VNE images,196/213 calcifications(92%)and 5/6 renal stones(84%)were visualized.Lytic-like artifacts in the vertebral bodies were seen in all studies.CONCLUSION:Iodine deletion in VNE images is most significant in arteries,and less significant in solid organs and veins.Most vascular and intra-abdominal organ calcifications are preserved.Jacob Sosna Shmuel Mahgerefteh Liran Goshen Galit Kafri Galit Aviram Arye Blachar 2012World Journal of Radiology2012,4,4:4
2公司所有权和公司治理中的路径依赖理论显示文摘世界发达经济体之间,公司结构千差万别。我们提出的公司结构的路径依赖理论有助于理解这些差异。在任意时点,某经济体的公司结构部分依赖于该经济体早期所采用的结构。本文提出并分析了路径依赖的两种渊源——结构驱动及规则驱动。首先,一个经济体的公司结构依赖于该经济体在初始阶段具有的结构。初始所有权结构之所以会产生这种效果,是因为它影响到特定公司对有效率结构的判断,也因为它能够给某些当事人提供动力和权力以阻止对初始所有权结构进行改变。其次,影响着所有权结构的公司规则本身也依赖于经济体在初始阶段所采用的公司结构。初始所有权结构既可影响对何种规则有效率的判断,又可影响利益集团政治,而利益集团政治能够决定实际上选择何种规则。我们的路径依赖理论阐明了为何发达经济体能够顶住趋同的压力而保持着所有权结构上的差异。同时,该理论也为理解为何一些重要的差别可能持续存在提供了基础。Lucian Arye Bebchuk Mark J.Roe 宁桂君 2011研究生法学2011,26,5:3
3Understanding and managing the morphology of branches incising into sand-clay deposits in the Dutch Rhine Delta显示文摘在在荷兰的西南的部分的 Rhine-Meuse 三角洲,河分支的形态学高度依赖于心土的 erodibility。在 Haringvliet 河口的闭合以后被开始的侵蚀过程由一个水坝分叉(在 1970 ) ,引起了几个连接分支的一个强壮的切口。由于这个区域的地质的进化,心土的岩性学显示出大变化在高度 erodible 沙并且糟糕 erodible 泥炭和泥土层。这研究显示出地质的信息怎么能被用来创造心土的 erodibility 的 3D 地图,并且这个信息怎么能被用来扼要表示在为词法模拟的计算模型的心土。在区域与之间的沙补丁的本地切入糟糕, erodible 床原因深搜索洞,因此在河岸不稳定性(流动幻灯片) 和象丁提,码头,隧道,和管道那样的构造的损坏上增加风险。数学模型的各种各样的类型,从 1D (SOBEK )到 quasi-3D (Delft3D ) 被使用了学习河床和可能的管理选择的未来发展。这些途径的结果证明模型为心土 schematization 要求一条层簿记途径的包括,不一致的沉积部分(沙泥) ,潮汐并且河分泌物边界条件,和能力减小搬运当模特儿。为减少风险的河管理,河床的发展怎么能在大规模和小规模上被探讨,被显示出。例如,沉积喂和床的固定的使用能为大规模管理被建议,当监视时,当对超过的小规模的开发的反应预先规定干预层次,在侵蚀的开始的干预能被建议。Kees SLOFF(C.J.) Ary VAN SPIJK Esther STOUTHAMER Arjan SIEBEN 2013International Journal of Sediment Research2013,28,2:3
4Delving into the variations in tree species composition and richness across south american subtropical atlantic and Pampean forests显示文摘Aims We analyse here the variations in species composition and richness and the geographic ranges of the tree species occurring in south american subtropical atlantic and Pampean forests.our goals were to assess(i)the floristic consistency of usual classifications based on vegetation physiognomy,climate and elevation;(ii)the leading role of temperature-related variables on the variations in species composition and richness;(iii)the predominance of species with tropical-subtropical ranges,possibly as a result of forest expansion over grasslands after the last glacial maximum(LGM);(iv)the restriction of most subtropical endemics to stressful habitats as a possible result of past forest refuges during the LGM.Methods The region was defined by the Tropic of Capricorn to the north,the rio de la Plata to the south,the atlantic shoreline to the east and the catchment areas of the upper Paranáand uruguay rivers to the west.multivariate analyses,multiple regression modelling and variance partition analyses were performed on a database containing 63994 occurrence records of 1555 tree species in 491 forest sites and 48 environmental variables.all species were also classified according to their known geographic range.Important Findingsa main differentiation in species composition and richness was observed between the eastern windward coastlands(rain and cloud forests)and western leeward hinterlands(Araucaria and semi-decid-uous forests).Pre-defined forest types on both sides were consistent with variations in tree species composition,which were significantly related to both environmental variables and spatial proximity,with extremes of low temperature playing a chief role.Tree species rich-ness declined substantially towards the south and also from rain to seasonal forests and towards the highland summits and sandy shores.species richness was significantly correlated with both minimum temperature and actual evapotranspiration.about 91%of the subtropical flora is shared with the much richer tropical flora,prob-ably extracting species that can cope with frost outbreaks.The 145 subtropical endemics were not concentrated in harsher habitats.Ary T.Oliveira-Filho Jean C.Budke João A.Jarenkow Pedro V.Eisenlohr Danilo R.M.Neves 2015Journal of Plant Ecology2015,8,3:2
5THE EVOLUTION OF FIELD DEPLOYABLE fNIR SPECTROSCOPY FROM BENCH TO CLINICAL SETTINGS显示文摘In the late 1980s and early 1990s,Dr.Britton Chance and his colleagues,using picosecond-long laser pulses,spearheaded the development of time-resolved spectroscopy techniques in an effort to obtain quantitative information about the optical characteristics of the tissue.These efforts by Chance and colleagues expedited the translation of near-infrared spectroscopy(NIRS)-based techniques into a neuroimaging modality for various cognitive studies.Beginning in the early 2000s,Dr.Britton Chance guided and steered the collaboration with the Optical Brain Imaging team at Drexel University toward the development and application of afield deployable continuous wave functional near-infrared spectroscopy(fNIR)system as a means to monitor cognitive functions,particularly during attention and working memory tasks as well as for complex tasks such as war games and air tra±c control scenarios performed by healthy volunteers under operational conditions.Further,these collaborative efforts led to various clinical applications,including traumatic brain injury,depth of anesthesia monitoring,pediatric pain assessment,and braincomputer interface in neurology.In this paper,we introduce how these collaborative studies have made fNIR an excellent candidate for specified clinical and research applications,including repeated cortical neuroimaging,bedside or home monitoring,the elicitation of a positive effect,and protocols requiring ecological validity.This paper represents a token of our gratitude to Dr.Britton Chance for his influence and leadership.Through this manuscript we show our appreciation by contributing to his commemoration and through our work we will strive to advance thefield of optical brain imaging and promote his legacy.KURTULUS IZZETOGLU HASAN AYAZ ANNA MERZAGORA MELTEM IZZETOGLU PATRICIA ASHEWOKIS SCOTT CBUNCE KAMBIZ POURREZAEI ARYE ROSEN BANU ONARAL 2011Journal of Innovative Optical Health Sciences2011,4,3:2
6Do Short - Term Objectives Lead to Under - or - Over - investment in Long Term Prejects 显示文摘Bebchuk Lucian Arye and Stole Lars A 1993Journal of Finance1993,48,:1
7Performance comparision of sub-space rotation and MUSIC methods for direction estimation显示文摘Petre Stoica Arye Nehorai 1991IEEE Trans on Signal Processing1991,39,10:1
8Purification andcharacterization of an insect a-amylase inhibitor/endochitinase fromseeds of Job's Tears (Coix lachryma-jobi) 显示文摘MariaB Ary Michael Richardson Peter R Shewry 1989Biochimica et Bio-physica Acta (BBA) -Protein Structure and Molecular Enzymology1989,999,3:1
9Patient perspective on factors contributing to nonadherence to diabetes regimens 显示文摘Ary DV Toobert D Wilson W 1986Diabetes Care1986,9,2:1
10Development of adolescentproblem behavior显示文摘Ary D V Duncan T E Biglan A 1999Journal of Abnormal Child Psychology1999,27,2:1
11Multiscale entropy analysis of human gait dynamics显示文摘M. Costa C.-K. Peng Ary L. Goldberger Jeffrey M. Hausdorff 2003Physica A: Statistical Mechanics and its Applications2003,,1:1
12Memory tests in first-degree adult relatives of schizophrenic patients:a meta-analysis显示文摘Trandafir A Méary A Schürhoff F 2006Schizophr Res2006,81,23:1
13Acoustic Vector Sensor Correla- tions in Ambient Noise显示文摘Malcolm Hawkes Arye Nehorai 2001IEEE Journal of Oceanic Engineering2001,26,3:1
14Holographic Antenna Concept,Analysis,and Parameters显示文摘Moniem EISherbiny Aly E.Fathy Arye Rosen 0,,52:1
15Chromosomal inversion polymorphisms and adaptation 显示文摘Ary A Carla M Andrew R 2004Trends in Ecology & Evolution2004,19,9:1
16Determination of calcium dobesilate in human plasma using ion - pairing extraction and high-performance liquid chromatography显示文摘Rona K Ary K 2001Journal of Chromatography B2001,755,12:1
17MUSIC, maximum likeli- hood, and Cramer-rao bound 显示文摘Stoica P Arye Nehorai 1989IEEE Transactions on Signal Processing1989,37,5:1
18MUSIC,maximum likelihood,and Cramer-Rao bound显示文摘Stoica P Arye N 1989IEEE Transactions on Acoustics Speech and Signal Processing1989,37,5:1
19Microsatellites and a single nucleotide polymorphism differentiate apparent amylase classes in an extended pedigree of US rice germplasm 显示文摘Aryes N M MeClung A M Park W D 1997Theor Appl Genet1997,94,:1
20The effectiveness of an interactive multimedia program to influence eating habits 显示文摘Irvine AN Ary DV Grove DA 2004Health Education Research2004,19,3:1
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