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Transportation Safety and Environment 2020年第2期2卷 120-132页

作者： Stephen A.Arhin adam Gatiba Howard University Transportation Research Center 23006th Street NWWashingtonDC 20059United States

The Washington,DC crash statistic report for the period from 2013 to 2015 shows that the city recorded about 41789 crashes at unsignalized intersections,which resulted in 14168 injuries and 51 *** economic cost of these fatalities has been estimated to be in the millions of *** is therefore necessary to investigate the predictability of the occurrence of theses crashes,based on pertinent factors,in order to provide mitigating *** research focused on the development of models to predict the injury severity of crashes using support vector machines(SVMs)and Gaussian naïve Bayes classifiers(GNBCs).The models were developed based on 3307 crashes that occurred from 2008 to *** SVM models and a GNBC model were *** most accurate model was the SVM with a radial basis kernel *** model predicted the severity of an injury sustained in a crash with an accuracy of approximately 83.2%.The GNBC produced the worst-performing model with an accuracy of 48.5%.These models will enable transport officials to identify crash-prone unsignalized intersections to provide the necessary countermeasures beforehand.

关键词： crashes unsignalized intersection support vector machines Gaussian naïve Bayes classifier injury severity

A unified latent variable model for contrastive opinion mining

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Frontiers of Computer Science 2020年第2期14卷 404-416页

作者： Ebuka IBEKE Chenghua LIN adam WYNER Mohamad Hardyman BARAWI Department of Computing Science University of AberdeenAberdeen AB243FXUK

There are large and growing textual corpora in which people express contrastive opinions about the same *** has led to an increasing number of studies about contrastive opinion ***,there are several notable issues with the existing *** mostly focus on mining contrastive opinions from multiple data collections,which need to be separated into their respective collections *** addition,existing models are opaque in terms of the relationship between topics that are extracted and the sentences in the corpus which express the topics;this opacity does not help us understand the opinions expressed in the ***,contrastive opinion is mostly analysed qualitatively rather than *** paper addresses these matters and proposes a novel unified latent variable model(contraLDA),which:mines contrastive opinions from both single and multiple data collections,extracts the sentences that project the contrastive opinion,and measures the strength of opinion contrastiveness towards the extracted *** results show the effectiveness of our model in mining contrasted opinions,which outperformed our baselines in extracting coherent and informative sentiment-bearing *** further show the accuracy of our model in classifying topics and sentiments of textual data,and we compared our results to five strong baselines.

关键词： contrastive opinion mining sentiment analysis topic modelling

Venous thromboembolism in inflammatory bowel disease

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World Journal of Gastroenterology 2020年第12期26卷 1231-1241页

作者： Kimberly Cheng adam S Faye Department of Medicine NewYork-Presbyterian Columbia University Medical CenterNew YorkNY 10032United States Department of Medicine Columbia University Medical CenterNewYork-Presbyterian HospitalNew YorkNY 10032United States

Patients with inflammatory bowel disease(IBD)are at an increased risk for venous thromboembolism(VTE).VTE events carry significant morbidity and mortality,and have been associated with worse outcomes in patients with *** have suggested that the hypercoagulable nature of the disease stems from a complex interplay of systems that include the coagulation cascade,natural coagulation inhibitors,fibrinolytic system,endothelium,immune system,and ***,clinical factors that increase the likelihood of a VTE event among IBD patients include older age(though some studies suggest younger patients have a higher relative risk of VTE,the incidence in this population is much lower as compared to the older IBD patient population),pregnancy,active disease,more extensive disease,hospitalization,the use of certain medications such as corticosteroids or tofacitinb,and IBD-related *** the increased risk of VTE among IBD patients and the safety of pharmacologic prophylaxis,adherence rates among hospitalized IBD patients appear to be ***,recent data suggests that there is a population of high risk IBD patients who may benefit from post-discharge *** review will provide an overview of patient specific factors that affect VTE risk,elucidate reasons for lack of VTE prophylaxis among hospitalized IBD patients,and focus on recent data describing those at highest risk for recurrent VTE post-hospital discharge.

关键词： Inflammatory bowel disease Venous thromboembolism Prophylaxis Deep venous thrombosis Pulmonary embolism Ulcerative colitis

Weak-force sensing with squeezed optomechanics

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Science China(Physics,Mechanics & Astronomy) 2020年第2期63卷 71-81页

作者： Wen Zhao Sheng-Dian Zhang adam Miranowicz Hui Jing Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education Department of Physics and Synergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 410081China College of Physics and Materials Science Henan Normal UniversityXinxiang 453007China Faculty of Physics Adam Mickiewicz UniversityPozna´n 61-614Poland

We investigate quantum-squeezing-enhanced weak-force sensing via a nonlinear optomechanical resonator containing a movable mechanical mirror and an optical parametric amplifier(OPA). Herein, we determined that tuning the OPA parameters can considerably suppress quantum noise and substantially enhance force sensitivity, enabling the device to extensively surpass the standard quantum limit. This indicates that under realistic experimental conditions, we can achieve ultrahigh-precision quantum force sensing by harnessing nonlinear optomechanical devices.

关键词： weak-force sensing squeezing optomechanics

Possibilities-within-Constraints:Implementing the Funds of Knowledge Concept in the People’s Republic of China

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Frontiers of Education in China 2016年第2期11卷 187-216页

作者： adam POOLE School of Education The University of Nottingham Ningbo ChinaNingbo 315100China

This article is designed as the starting point for future research into the implementation of the funds of knowledge concept in the People’s Republic of *** an exploratory research design,I sketch how the funds of knowledge concept could be used by teachers to empower ethnic minority and city-born migrant children disadvantaged by government policies that restrict access to educational resources and marginalize local *** article identifies a number of logistical and cultural constraints that complicate the implementation of the funds of knowledge concept in the Chinese context,including access to minority and city-born migrant students,guanxi,examination pressure,and cultural scripts for teaching that emphasize knowledge ***,it also suggests how teachers can work within these constraints by taking advantage of curriculum reform in China,which has led to more autonomy at the local level and the creation of elective *** courses could provide the space for the deployment of strategies that draw on students’funds of *** strategies proposed include neighborhood walks,artifact collection,and pedagogies for teaching that foster collaboration between teachers and *** article also extends the notion of funds of knowledge by suggesting how the funds of knowledge concept could be of benefit to China’s Han ethnic majority.

关键词： funds of knowledge China ethnic minorities migrant children

Synthesis and CrystalStructure of Dicesiumtrans-Dicarbonatotetraaquom agnesium ,Cs_2[Mg(CO_3)_2(H_2O)_4]

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Chemical Research in Chinese Universities 1999年第3期15卷 211-217页

作者： ZHENG Yue-qing adam Arnold Chemistry Department Ningbo UniversityNingbo 315211P.R.China Institute fr Anorganische Chemie Universitāt zu KlnD 50674 KlnGermany

The title compound, Cs 2[Mg(CO 3) 2(H 2O) 4], was synthesized by the dropwise addition of an aqueous solution of Mg(NO 3) 2 to a stirred aqueous Cs 2CO 3/CsHCO 3 solution. A colorless needle shaped crystal was formed by slow evaporation. The crystal structure was established on the basis of the single crystal X ray diffraction data. Cs 2[Mg(CO 3) 2(H 2O) 4] crystallized in the orthorhombic space group Pbca (No. 61) with a =0.658 4(1) nm, b =1.257 9(1) nm, c =1.301 3(1) nm, \{ V =1.077 8 nm 3, Z =4, D x=2.971 g·cm -3 , μ =69.20 cm -1 , F (000)=888, T =298 K, final R =0.029 and R w=0.024 for 1 037 observed reflections. The crystal consists of Cs + cations and the complex trans [Mg(CO 3) 2(H 2O) 4] 2- anions with each Mg atom coordinated by the six oxygens of two carbonate groups and four water molecules [ d (Mg_O)=0.203 6(4), 0.207 4(4), 0.213 4(4) nm]. The complex trans [Mg(CO 3) 2(H 2O) 4] 2- anions are arranged in a strongly compressed bcc pattern. A 3D network was formed through the intermolecular hydrogen bonds. The Cs + cations are located in cavities, each being surrounded by nine oxygens of five complex anions with d (Cs_O)=0.306 1-0.348 8 nm. The CO 2- 3 group reveals a lowering of D 3h symmetry due to site and coordination effects, but not any observable deviation from co planarity [ d (C_O)=0.127 2(6), 0.127 5(7) , 0.130 5(6) nm and O_C_O=119.6(5)°, 120.1(5)°, 120.4(5)°].

关键词： Synthesis Cs 2[Mg(CO 3) 2(H 2O) 4] Dicesium trans dicarbonatotetraaquomagnesium Crystal structure Complex carbonate

Triphenylphosphine and sodium iodide: a new catalyst combination to rival precious metal complexes in visible light photoredox catalysis

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Science China Chemistry 2019年第9期62卷 1083-1084页

作者： adam Noble Varinder K.Aggarwal School of Chemistry University of BristolCantock’s Close

Photoredox catalysis has changed the landscape of modern synthetic organic chemistry by prompting a dramatic increase in research activity into reactions that proceed through free radical intermediates.

关键词： Triphenylphosphine sodium iodide visible light photoredox catalysis

Proust Between Print Culture and Visual Art： Eve Kosofsky Sedgwick＇s ＂Works in Fiber, Paper and Proust＂

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Fudan Journal of the Humanities and Social Sciences 2015年第2期8卷 179-191页

作者： adam Watt College of Humanities University of Exeter Queen's Building The Queen's DriveExeter EX4 4QH UK

Marcel Proust is an author of global significance and renown. Trans- lations into Chinese and Korean of A la recherche du temps perdu are ongoing. The Gallica online library of France＇s Bibliothbque nationale makes the notebooks from which Proust＇s novel emerged between 1908 and 1922 digitally accessible any- where in the world. It is well known that Proust has been adapted to graphic novel format, individual volumes of his novel have been adapted for cinema, inspired ballet and musical theatre and his characters＇ lives have fuelled works of fiction by contemporary creative writers. This paper considers a very recent instance of Proust＇s reception and adaptation：＂Works in Fiber, Paper and Proust＂ created by the critic and theorist Eve Kosofsky Sedgwick （1950-2009） and first exhibited at Harvard University in 2005. These remarkable objects--including what Sedgwick calls an ＂accordion-book＂ and a ＂loom-book＂--give a woven, layered physicality to Proust＇s words and remobilise them in ways that force us to reconfigure our understanding of the text-reader relation. Sedgwick＇s visual, textile artworks are the products of creative, adaptive practices undertaken as a sort of therapy that was instrumental in her coming to terms with the terminal cancer diagnosis she received in 1996. My paper explores Sedgwick＇s adaptive practice and interrogates the in- sights their challenging hybridity offers us into the ongoing transmission of Proust＇s work.

关键词： Proust Eve Sedgwick A la recherche du temps perdu "Works inFiber, Paper and Proust" Adaptation

Multifunctional resonant wavefront-shaping meta-optics based on multilayer and multi-perturbation nonlocal metasurfaces

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Light(Science & Applications) 2022年第9期11卷 2194-2206页

作者： STEPHANIE CMALEK adam COVERVIG ANDREA ALÙ NANFANG YU Department of Applied Physics and Applied Mathematics Columbia UniversityNew YorkNY 10027USA Photonics Initiative Advanced Science Research CenterCity University of New YorkNew YorkNY 10031USA Physics Program Graduate CenterCity University of New YorkNew YorkNY 10016USA

Photonic devices rarely provide both elaborate spatial control and sharp spectral control over an incoming *** optical metasurfaces,for example,the localized modes of individual meta-units govern the wavefront shape over a broad bandwidth,while nonlocal lattice modes extended over many unit cells support high quality-factor ***,we experimentally demonstrate nonlocal dielectric metasurfaces in the near-infrared that offer both spatial and spectral control of light,realizing metalenses focusing light exclusively over a narrowband resonance while leaving off-resonant frequencies *** devices attain this functionality by supporting a quasi-bound state in the continuum encoded with a spatially varying geometric *** leverage this capability to experimentally realize a versatile platform for multispectral wavefront shaping where a stack of metasurfaces,each supporting multiple independently controlled quasi-bound states in the continuum,molds the optical wavefront distinctively at multiple wavelengths and yet stay transparent over the rest of the *** a platform is scalable to the visible for applications in augmented reality and transparent displays.

关键词： spectrum resonant supporting

Fekete-Szego problem for close-to-convex functions with respect to a certain convex function dependent on a real parameter

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Frontiers of Mathematics in China 2016年第6期11卷 1471-1500页

作者： Nak Eun CHO Bogumila KOWALCZYK adam LECKO Department of Applied Mathematics Pukyong National University Busan 608-737 Korea Department of Complex Analysis University of Warmia and Mazury ul. S}oneczna 54 10-710 Olsztyn Poland

Given α∈[0, 1], let hα（z）：= z/（1 - αz）, z ∈ D ：= {z ∈ C：｜z｜〈 1}. An analytic standardly normalized function f in D is called close-to-convex with respect to hα if there exists δ ∈ （-π/2, π/2） such that Re{e^iδ zf′（z）/hα（z）} 〉 0, z ∈ D. For the class l（hα） of all close-to-convex functions with respect to hα, the Fekete-Szego problem is studied.

关键词： Fekete-Szego problem close-to-convex functions close-to-convex functions with argument δ close-to-convex functions with respect to a convex function functions of bounded turning