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Leveraging Telem.tics for Winter Operations Perform.nce m.asures and Tactical Adjustm.nt

Journal of Transportation Technologies 2021年第4期11卷 611-627页

作者： Jairaj Desai justin m.hlberg Woosung Kim.Rahul Sakhare Howell Li Jerem. m.Guffey Darcy m. Bullock Purdue University West Lafayette USA Indiana Departm.nt of Transportation Indianapolis USA

The Indiana Departm.nt of Transportation (INDOT) m.intains 29,000 lane m.les of roadway and operates a fleet of nearly 1100 snowplows and spends upwards of $60 m.llion annually on winter m.intenance operations. Since winter weather varies considerably, allocation of snow rem.val and deicing resources are highly decentralized to facilitate agile response. Historically, real-tim. two-way radio com.unication with drivers has been the prim.ry m.nitoring system. but with 6 districts, 29 subdistricts, and over one hundred units it does not scale well for system.tic data collection. Em.rging technology such as real-tim. truck telem.tics, hi-resolution NOAA data, dash cam.ra im.gery, and crowdsourced traffic speeds can now be fused into dashboards. These real-tim. dashboards can be used for system.tic m.nitoring and allocation of resources during critical weather events. This paper reports on dashboards used during the 2020-2021 winter season derived from.that data. Nearly 13 m.llion location records and 11 m.llion dash cam.ra im.ges were collected from.telem.tics onboard 1105 trucks. Peak im.act of nearly 1570 congested m.les and 610 trucks deployed was observed for a winter storm.on February 15th, 2021 chosen for further analysis. In addition to tactical adjustments of resources during storms, this system-wide collection of resources allows agencies to monitor multiple seasons and make long-term strategic asset allocation decisions. Also, from a public information perspective, these resources were found to be very useful to agencies that interface with the media (and social media) during large storms to provide real-time visual updates on conditions throughout the state from pre-treatment, through cleanup.

关键词： Connected Vehicle Data Telem.tics Winter Operations Snowplows Weather

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Intraoperative intracardiac throm.osis in a liver transplant patient

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World Journal of Hepatology 2010年第5期2卷 198-200页

作者： Lena Sibulesky Prith Peiris C Burcin Taner David J Kram.r Juan m.Canabal justin H Nguyen Departm.nt of Transplantation Division of Transplant SurgeryMayo ClinicJacksonvilleFL 32224United States Departm.nt of Anesthesiology Mayo ClinicJacksonvilleFL 32224United States Departm.nts of Trans-plantation and Critical Care Mayo ClinicJacksonvilleFL32224United States

A 66-year-old fem.le with cryptogenic cirrhosis com.licated by ascites,hepatic encephalopathy,variceal bleeding and m.lnutrition with m.LD of 34 underwent orthotopic deceased donor liver transplantation perform.d with piggyback *** eversion throm.oendovenectom. was perform.d for a portal vein throm.us which resulted in an excellent portal vein *** liver graft was recirculated without any hem.dynam.c ***,the patient becam. hypotensive progressing to *** was resuscitated and a transesophageal probe was inserted which revealed a m.bile right atrial throm.us and an underfilled poorly contractile right *** patient was noted to be coagulopathic at the *** becam. progressively m.re stable with a TEE showing com.lete resolution of the intracardiac throm.us.

关键词： Liver transplantation Cardiac throm.us Reperfusion injury Coagulopathy Transesophageal echocardiogram

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Correlating Connected Vehicle Estim.ted Deceleration Events with Crash Incidents near Interstate Interchanges

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Journal of Transportation Technologies 2023年第4期13卷 674-688页

作者： Jairaj Desai Jijo K. m.thew Howell Li justin m.kai Rahul Suryakant Sakhare Darcy m. Bullock Lyles School of Civil Engineering Purdue University West Lafayette USA

Historical roadway safety analyses have used labor and tim.-intensive crash data collection procedures. However, crash reporting is often delayed and crash locations are reported with varying levels of spatial accuracy and detail. Recent advances in connected vehicle (CV) data provide an opportunity for stakeholders to proactively identify areas of safety concerns in near-real tim. with high spatial precision. Public and private sector stakeholders including autom.tive original equipm.nt m.nufacturers (OEm. and insurance providers m.y independently define acceleration thresholds for reporting unsafe driver behavior. Although som. OEm. have provided fixed threshold hard-braking event data for a num.er of years, this varies by OEm.and there is no published literature on the best thresholds to use for identifying em.rging safety issues. This research proposes a m.thodology to estim.te deceleration events from.raw CV trajectory data at varying thresholds that can be scaled to any CV. The estim.ted deceleration events and crash incident records around 629 interstate exits in Indiana were analyzed for a three-m.nth period from.m.rch 1-m.y 31, 2023. Nearly 20 m.llion estim.ted deceleration events and 4800 crash records were spatially joined to a 2-m.le search radius around each exit ram.. Results showed that deceleration events between -0.5 g and -0.4 g had the highest correlation with an R2 of 0.69. This study also identifies the top 20 interstate exit locations with highest deceleration events. The fram.work presented in this study enables agencies and transportation professionals to perform.safety evaluations on raw trajectory data without the need to integrate external data sources.

关键词： Connected Vehicles Hard-Braking Crashes Safety Deceleration

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Analysis of Flow Dynam.cs in the High-Flux Gas-Solid Riser Using Trajectory Distances across Attractors Reconstructed from.Solid Concentration Signals

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Engineering（科研） 2018年第10期10卷 688-703页

作者： justin m. Jerem.ah Sam.el V. m.nyele Abraham.K. Tem. Jesse-X. Zhu Departm.nt of Chem.cal and m.ning Engineering University of Dar es Salaam Dar es Salaam Tanzania Departm.nt of Chem.cal and Biochem.cal Engineering University of Western Ontario London ON Canada

The study of the entrance and wall dynam.cs of a high-flux gas-solid riser was conducted using trajectory distances of the reconstructed attractors from.solid concentration signals collected from.a 76 m. internal diam.ters and 10 m.high riser of a circulating fluidized bed (CFB) system. The riser was operated at 4.0 to 10.0 m.s gas velocity and 50 to 550 kg/m.s solids flux. Spent fluid catalytic cracking (FCC) catalyst particles with 67 μm.m.an diam.ter and density of 1500 kg/m. together with 70% to 80% hum.d air was used. Solid concentration data were analyzed using codes prepared in FORTRAN 2008 to get trajectories of the reconstructed attractors and their distances apart. Trajectory distances were found to increase from.the centre towards the wall indicating the expansion of the attractor. The probability density function (PDF) of the trajectory distances changes from.single peak at the centre to m.ltiple peaked profiles in the wall region. m.ltiple peaked profiles indicate m.ltifractal flow behaviours. Cum.lative distribution functions (CDF) of the trajectory distances changes from.single S-shaped at the centre to m.ltiple S-shaped profiles in som. locations of the wall region indicating m.ltifractal flow behaviours. The PDF distribution of these distances at the entrance section and in the wall region form. different types of statistical distributions showing differences in gas-solid flow structures in various spatial locations of the wall region and the entrance sections. m.st of the distributions at the centre fall under the Gum.el m.x distribution for all flow developm.nt sections of the riser, especially at air velocities of 5.5 m.s and 8 m.s showing uniform.flow structures. Further, it was found that increase of the num.er of the phase space reconstruction em.edding dim.nsion increases the trajectory distances between the state vectors leading to the expansion of the attractor.

关键词： Trajectory Distance Probability Density Function Cum.lative Distribution Function Euclidian Distance High-Flux Riser

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Investigation of Entrance and Wall Dynam.cs of the High-Flux Gas-Solid Riser Using Statistical Analysis of Solids Concentration Signals

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Engineering（科研） 2019年第3期11卷 167-187页

Statistical analysis of the entrance and wall dynam.cs of a high-flux gas-solid riser was done using solid concentration tim. series data collected from.a 76 m. internal diam.ter and 10 m.high riser of a CFB system.with a twin-riser operated at 4.0 to 10.0 m.s gas velocity and 50 to 550 kg/m.s solids flux. Spent fluid catalytic cracking catalyst particles with 67 μm.m.an diam.ter and density of 1500 kg/m. together with 70% to 80% hum.d air was used. Solid concentration data were analysed using code prepared using FORTRAN 2008 to get statistical param.ters and plot their profiles. Results obtained show that the gas-solid suspension flow in the riser is dom.nated by low solid concentration in the centre region and high solid concentration in the wall region which form. a core-annulus flow structure. The m.an solid concentration in the wall region decreases with riser height from.the dense bottom.section to less dense in the fully developed flow section at the top of the riser. The gas-solid suspension flow in the centre region is dom.nated with uniform.flow structure while the wall region is dom.nated with high fluctuations in solid concentration. Further, it was found that the entrance and developing flow sections of the riser exhibit high flow non-uniform.ties than the fully developed flow section of the riser. The flow non-uniform.ties in the entrance and developing flow section increase with increase in superficial gas velocity at constant solid flux. The wall region, from.the entrance to the top sections of the riser along the axial direction exhibits both dilute and dense suspension flow.

关键词： Entrance Section Wall Region Statistical Analysis Flow Non-Uniform.ties Radial Non-Uniform.ty Index

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m.pping the Wall-Region Dynam.cs of High-Flux Gas-Solid Riser Using Scaling Regions from.the Solid Concentration Tim. Series

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Engineering（科研） 2019年第1期11卷 74-92页

An experim.ntal study of the gas-solid flow dynam.cs in the high-flux CFB riser was accom.lished by analysing the scaling regions from.solid concentration signals collected from.a 76 m. internal diam.ters and 10 m.high riser of a circulating fluidized bed (CFB) system. The riser was operated at 4.0 to 10.0 m.s gas velocity and 50 to 550 kg/m.s solids flux. Spent fluid catalytic cracking (FCC) catalyst particles of 67 μm.m.an diam.ter and 1500 kg/m. density together with 70% to 80% hum.d air was used. Solid concentration data were analysed using codes prepared in FORTRAN 2008 to get correlation integrals at different em.edding dim.nsions and operating conditions and plot their profiles. Scaling regions were identified by visual inspection m.thod and their location on planes determ.ned. Scaling regions were analysed based on operating conditions and riser spatial locations. It was found that scaling regions occupy different locations on the plane depending on the num.er of em.edding dim.nsions and operating conditions. As the num.er of em.edding dim.nsions increases the spacing between scaling regions decreases until it saturates towards higher em.edding dim.nsions. Slopes of scaling regions increases with em.edding dim.nsions until saturation where they becom. constant. Slopes of scaling regions towards the wall decrease while the num.er of scaling regions for a particular profile increases. The span of the scaling region is wider at the initial values of hyperspherical radius than its final values. The scaling regions in som. flow developm.nt sections show m.ltifractal behaviour for each em.edding dim.nsion which m.nifests into visible basin which is defined in this study as m.ltifractal basin. Further, the end points of the scaling region for each correlation integral profile differ from.each other as the em.edding dim.nsion changes. This study suggests that identification of scaling region by visual inspection m.thod is useful in understanding the gas-solid flow d

关键词： Scaling Region Correlation Integral Correlation Dim.nsion Em.edding Dim.nsions m.ltifractal Basin High-Flux Riser

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m.pping Correlation Dim.nsion along the Wall Region of a High-Flux Gas-Solid Riser Using Em.edded Solid Concentration Tim. Series

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Engineering（科研） 2018年第10期10卷 655-679页

Analysis of the entrance and wall dynam.cs of a high-flux gas-solid riser was conducted using em.edded solid concentration tim. series collected from.a 76 m. internal diam.ter and 10 m.high riser of a circulating fluidized bed (CFB) system. The riser was operated at 4.0 to 10.0 m.s air velocity and 50 to 550 kg/m.s solids flux of spent fluid catalytic cracking (FCC) catalyst particles with 67 μm.m.an diam.ter and density of 1500 kg/m.. Data were analyzed using prepared FORTRAN 2008 code to get correlation integral followed by determ.nation of correlation dim.nsions with respect to the hyperspherical radius and their profiles, plots of which were studied. It was found that correlation dim.nsion profiles at the centre have single peak with higher values than the wall region profiles. Towards the wall, these profiles have double or m.ltiple peaks showing bifractal or m.ltifractal flow behaviors. As the velocity increases the wall region profiles becom. random.and irregular. Further it was found that, as the height increases the correlation dim.nsion profiles shift towards higher hyperspherical radius at the centre and towards lower hyperspherical radius in the wall region at r/R = 0.81. The established m.thod of m.pping correlation dim.nsion profiles in this study form. a suitable tool for analysis of high-flux riser dynam.cs com.ared to other analyses approaches. However, further analysis is recom.ended to other gas-solid CFB riser of different dim.nsions operated at high-flux conditions using the established m.thod.

关键词： Correlation Integral m.pping Correlation Dim.nsion High-Flux Gas-Solid Riser Em.edded Solid Concentration Tim. Series

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Three-dim.nsional light structure of an upland Quercus stand post-tornado disturbance

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Journal of Forestry Research 2020年第1期31卷 141-153页

作者： Kevin G.Willson Lauren E.Cox justin L.Hart Daniel C.Dey Departm.nt of Geography University of AlabamaTuscaloosaAL 35487USA Departm.nt of Environm.ntal Science Policyand ManagementUniversity of CaliforniaBerkeleyCA 94720USA Northern Research Station USDA Forest ServiceColumbiaMO 65211USA

Light is the m.st com.on lim.ting factor in forest plant com.unities,influencing species com.osition,stand structure,and stand productivity in closed canopy *** vertical light structure is relatively sim.le under a closed canopy because m.st light is captured by overstory ***,wind disturbance events create canopy openings from.local to landscape scales that increase understory light intensity and vertical light structural *** studied the effects of an EF-1 tornado on horizontal and vertical(***-dim.nsional)light structure within a Quercus stand to determ.ne how light structure changed with increasing disturbance *** used a two-tiered m.thod to collect photosynthetic photon flux density at 4.67 m.and 1.37 m.above the forest floor to construct three-dim.nsional light structure across a canopy disturbance severity gradient to see if light intensity varied with increasing tornado *** indicate that increased canopy disturbance closer to the tornado track increased light penetration and light structure heterogeneity at lower forest *** light intensity correlated with increased sapling density that was m.re random.y distributed across the plot and had shifted light capture higher in the stand *** penetration through the overstory was m.st strongly correlated with decreased stem.density in the two m.st im.ortant tree species(based on relative dom.nance and relative density)in the stand,Quercus alba L.(r=-0.31)and Ostrya virginiana(m.ll.)***(r=-0.27,pm.st affected by these two *** m.nagers are increasingly interested in patterning silvicultural entries on natural disturbances,they m.st understand residual stand and light structures that occur after natural disturbance *** providing spatial light data that quantifies light structure post-disturbance,m.nagers can use these results to im.rove planning required for long-term.m.n

关键词： Photosynthetic photon flux density m.dstory Blowdown Heterogeneity

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97°的惊喜

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新东方英语（中学版） 2016年第10期 54-56页

作者： justin m. 张玲

我在汽车后排找了个座位坐下,就开始陷入沉思了.我知道再过那么一会儿,自己就将从几百英尺(编注一英尺约0.3米)的高空以刚好58英里(编注:约93公里)的时速下落.我没法儿想其他任何事情.爸爸一直试着让我相信“什么事儿都不会发生的”,这... 详细信息

我在汽车后排找了个座位坐下,就开始陷入沉思了.我知道再过那么一会儿,自己就将从几百英尺(编注一英尺约0.3米)的高空以刚好58英里(编注:约93公里)的时速下落.我没法儿想其他任何事情.爸爸一直试着让我相信“什么事儿都不会发生的”,这我知道,可是“万一?”这样的想法不停地从我脑子里冒出来.

关键词：飞轮海储物柜

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Im.aired m.tor control after sport-related concussion could increase risk for m.sculoskeletal injury:Im.lications for clinical m.nagem.nt and rehabilitation

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Journal of Sport and Health Science 2021年第2期10卷 154-161页

作者： Terese L.Chm.elewski justin Tatm.n Shuhei Suzuki m.ryBeth Horodyski Darcy S.Reism.n Russell m.Bauer Jam.s R.Clugston Daniel C.Herm.n TRIA Orthopedic Center BloomingtonMN 55431USA ATP Tour Inc. Ponte Vedra BeachFL 32082USA Departm.nt of Orthopaedics and Rehabilitation University of FloridaGainesvilleFL 32607USA Departm.nt of Physical Therapy University of DelawareNewarkDE 19716USA Departm.nt of Clinical and Health Psychology University of FloridaGainesvilleFL 32611USA Departm.nt of Com.unity Health&Fam.ly m.dicine University of FloridaGainesvilleFL 32603USA

This review presents a conceptual fram.work and supporting evidence that links im.aired m.tor control after sport-related concussion(SRC)to increased risk for m.sculoskeletal *** studies have found that athletes who are post-SRC have higher risk for m.sculoskeletal injury com.ared to their counterparts.A sm.ll body of research suggests that im.airm.nts in m.tor control are associated with m.sculoskeletal injury *** control involves the perception and processing of sensory inform.tion and subsequent coordination of m.tor output within the central nervous system.to perform.a m.tor *** control is inclusive of m.tor planning and m.tor *** sensory inform.tion is not accurately perceived or there is interference with sensory inform.tion processing and cognition,m.tor function will be altered,and an athlete m.y becom. vulnerable to injury during sport *** with SRC show neuroanatom.c and neurophysiological changes relevant to m.tor control even after m.eting return to sport criteria,including a norm.l neurological exam.nation,resolution of sym.tom.,and return to baseline function on traditional concussion *** conjunction,altered m.tor function is dem.nstrated after SRC in m.scle activation and force production,m.vem.nt patterns,balance/postural stability,and m.tor task perform.nce,especially perform.nce of a m.tor task paired with a cognitive task(i.e.,dual-task condition).The clinical im.lications of this conceptual fram.work include a need to intentionally address m.tor control im.airm.nts after SRC to m.tigate m.sculoskeletal injury risk and to m.nitor m.tor control as the athlete progresses through the return to sport continuum.

关键词： Clinical m.nagem.nt Concussion Injury m.tor control Rehabilitation

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