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Predicting global landslide spatiotemporal distribution:Integrating landslide susceptibility zoning techniques and real-time satellite rainfall estimates

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International Journal of Sediment Research 2008年第3期23卷 249-257页

作者： robert F. adler Senior Research Scientist Code 613.1 Laboratory for Atmospheres NASA/Goddard Space Flight Center Greenbelt MD 20771 U. S. ADr.

Landslides triggered by rainfall can possibly be foreseen in real time by jointly using rainfall intensity-duration thresholds and information related to land surface susceptibility. However, no system exists at either a national or a global scale to monitor or detect rainfall conditions that may trigger landslides due to the lack of sufficient ground-based observing network in many parts of the world. Recent advances in satellite remote sensing technology and increasing availability of high-resolution geospatial products around the globe have provided an unprecedented opportunity for such a study. In this paper, a framework for developing a preliminary real-time prediction system to identify where rainfall-triggered landslides will occur is proposed by combining two necessary components: surface landslide susceptibility and a real-time space-based rainfall analysis system (http://***). First, a global landslide susceptibility map is derived from a combination of semi-static global surface characteristics (digital elevation topography, slope, soil types, soil texture, land cover classification, etc.) using a GIS weighted linear combination approach. Second, an adjusted empirical relationship between rainfall intensity-duration and landslide occurrence is used to assess landslide hazards at areas with high susceptibility. A major outcome of this work is the availability for the first time of a global assessment of landslide hazards, which is only possible because of the utilization of global satellite remote sensing products. This preliminary system can be updated continuously using the new satellite remote sensing products. This proposed system, if pursued through wide interdisciplinary efforts as recommended herein, bears the promise to grow many local landslide hazard analyses into a global decision-making support system for landslide disaster preparedness and mitigation activities across the world.

关键词： Landslide Natural disasters Satellite remote sensing Real-time precipitation analysis Landslide susceptibility

Long-term effect of intrathecal baclofen treatment on bone health and body composition after spinal cord injury:A case matched report

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World Journal of Orthopedics 2020年第10期11卷 453-464页

作者： Dora E Ifon Mina P Ghatas John C Davis Refka E Khalil robert A adler Ashraf S Gorgey Spinal Cord Injury and Disorders Center Central Virginia VA Health Care SystemRichmondVA 23249United States Medical Service Central Virginia VA Health Care SystemRichmondVA 23249United States Department of Internal Medicine Division of EndocrinologyDiabetes and MetabolismVirginia Commonwealth UniversityRichmondVA 23298United States Department of Physical Medicine and Rehabilitation Virginia Commonwealth UniversityRichmondVA 23298United States

BACKGROUND Severe spasticity may negatively impact functionality and quality of life after spinal cord injury(SCI).Intrathecal baclofen treatment(IBT)is effectively used to manage severe spasticity and reduce ***,long-term IBT may have a negative effect on bone mineral content(BMC),bone mineral density(BMD)and body composition(such as percentage fat mass and lean body mass).We demonstrated the negative effects of long-term IBT use in a single case compared with two non-IBT *** SUMMARY A 46-year old Caucasian male Veteran(case)with a 21 year history of complete tetraplegia(complete C6 SCI)was implanted with IBT for 20 *** case was matched to two participants with different time since injuries[2(match 1)and 13(match 2)years]without *** BMC and BMD at the epiphysis and metaphysis of the distal femur and proximal tibia were evaluated using dual knee and the dual femur modules of GE Lunar iDXA *** and leg body composition assessments were also conducted for the three *** effect of long-term IBT was demonstrated by changes in BMD,consistent with bone demineralization,at the distal femur and proximal tibia and changes in percentage fat mass and lean mass of *** case showed 113%lower BMD at the distal femur,and 78.1%lower at the proximal tibia compared to match 1,moreover the case showed 45%lower BMD at the distal femur,and no observed changes at the proximal tibia compared to match *** case had 27.1%and 16.5%greater leg%fat mass compared to match 1 and match 2,***,the case had 17.4%and 11.8%lower%leg lean mass compared to match 1 and match 2,*** Long-term IBT may impact bone health and body composition parameters in persons with complete *** may be prudent to encourage regular screening of individuals on long-term IBT considering the prevalence of osteoporosis related fractures,cardiovascular diseases,and metabolic disorders in this population.

关键词： Intrathecal baclofen Spasticity Bone mineral density Epiphysis Metaphysis Spinal cord injury Case report

Neuromuscular electrical stimulation and testosterone did not influence heterotopic ossification size after spinal cord injury: A case series

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World Journal of Clinical Cases 2016年第7期4卷 172-176页

作者： Pamela D Moore Ashraf S Gorgey Rodney C Wade Refka E Khalil Timothy D Lavis Rehan Khan robert A adler Spinal Cord Injury Service and Disorders Hunter Holmes Mc Guire VA Medical Center Physical Medicine and Rehabilitation Virginia Commonwealth University Radiology Service Hunter Holmes McG uire VA Medical Center Endocrinology Service Hunter Holmes Mc Guire VA Medical Center Endocrine Division Virginia Commonwealth University School of Medicine

Neuromuscular electrical stimulation(NMES) and testosterone replacement therapy(TRT) are effective rehabilitation strategies to attenuate muscle atrophy and evoke hypertrophy in persons with spinal cord injury(SCI). However both interventions might increase heterotopic ossification(HO) size in SCI patients. We present the results of two men with chronic traumatic motor complete SCI who also had pre-existing HO and participated in a study investigating the effects of TRT or TRT plus NMES resistance training(RT) on body composition. The 49-year-old male, Subject A, has unilateral HO in his right thigh. The 31-year-old male, Subject B, has bilateral HO in both thighs. Both participants wore transdermal testosterone patches(4-6 mg/d) daily for 16 wk. Subject A also underwent progressive NMES-RT twice weekly for 16 wk. Magnetic resonance imaging scans were acquired prior to and post intervention. Cross-sectional areas(CSA) of thewhole thigh and knee extensor skeletal muscles, femoral bone, and HO were measured. In Subject A(NMES-RT + TRT), the whole thigh skeletal muscle CSA increased by 10%, the knee extensor CSA increased by 17%, and the HO + femoral bone CSA did not change. In Subject B(TRT), the whole thigh skeletal muscle CSA increased by 13% in the right thigh and 6% in the left thigh. The knee extensor CSA increased by 7% in the right thigh and did not change in the left thigh. The femoral bone and HO CSAs in both thighs did not change. Both the TRT and NMES-RT + TRT protocols evoked muscle hypertrophy without stimulating the growth of preexisting HO.

关键词： Heterotopic ossification Neuromuscular electrical stimulation Testosterone Resistance training Spinal cord injury

A Note on Reviving the Goddard Satellite-Based Surface Turbulent Fluxes (GSSTF) Dataset

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Advances in Atmospheric Sciences 2009年第6期26卷 1071-1080页

作者： Chung-Lin SHIE Long S. CHIU robert adler Eric NELKIN I-I LIN Pingping XIE Feng-Chin WANG R. CHOKNGAMWONG William OLSON D. Allen CHU UMBC/GEST Baltimore Maryland USA Code 613.1 NASA/GSFC Greenbelt Maryland USA GMU/CEOSR Fairfax Virginia USA CUHK/ISEIS Shatin NT Hong Kong UMCP/ESSIC College Park Maryland USA SSAI Lanham Maryland USA NTU Taipei Taiwan NOAA/CPC Camp Springs Maryland USA CWB Taipei Chinese Taiwan UMBC/JCET Baltimore Maryland USA Code 613.2 NASA/GSFC Greenbelt Maryland USA

Accurate sea surface flux measurements are crucial for understanding the global water and energy cycles. The oceanic evaporation, which is a major component of the global oceanic fresh water flux, is useful for predicting oceanic circulation and transport. The global Goddard Satellite-based Surface Turbulent Fluxes Version-2 （GSSTF2; July 1987–December 2000） dateset that was o？cially released in 2001 has been widely used by scientific community for global energy and water cycle research, and regional and short period data analyses. We have recently been funded by NASA to resume processing the GSSTF dataset with an objective of continually producing a uniform dataset of sea surface turbulent fluxes, derived from remote sensing data. The dataset is to be reprocessed and brought up-to-date （GSSTF2b） using improved input datasets such as a recently upgraded NCEP/DOE sea surface temperature reanalysis, and an upgraded surface wind and microwave brightness temperature V6 dataset （Version 6） from the Special Sensor Microwave Imager （SSM/I） produced by Remote Sensing Systems （RSS）. A second new product （GSSTF3） is further proposed with a finer temporal （12-h） and spatial （0.25° × 0.25°） resolution. GSSTF2b （July 1987–December 2008） and GSSTF3 （July 1999–December 2009） will be released for the research community to use by late 2009 and early 2011, respectively.

关键词： surface turbulent fluxes global oceanic satellite-based

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中微子,开启通向新物理学的大门

求知导刊 2014年第1期 56-59页

作者： robert adler

“王冠下的脑袋总是难以安稳。”莎士比亚的这句话，同样可以送给今天粒子物理学的标准模型。这是迄今为止对物质基元及其相互作用最为成功的描述。最近找到的非常类似希格斯玻色子的粒子，让这个理论更加冠冕堂皇，因为这不仅证实了一... 详细信息

“王冠下的脑袋总是难以安稳。”莎士比亚的这句话，同样可以送给今天粒子物理学的标准模型。这是迄今为止对物质基元及其相互作用最为成功的描述。最近找到的非常类似希格斯玻色子的粒子，让这个理论更加冠冕堂皇，因为这不仅证实了一个近40年之前的预言，而且填补了这个理论最后的空白。

关键词：粒子物理学中微子大门希格斯玻色子莎士比亚标准模型相互作用类似

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清洁水法起作用了吗?

世界环境 1995年第2期 18-21页

作者： robert adler 干海珠 Serious Attorney at the National Resources Defense Council in Washington DC USA

清洁水法已经通过20多年了,人们几乎没得到什么清楚的信息来回答有关我们水体的基本质量问题:这些河流比20年前干净了多少?在我们的海滩上游泳安全吗?我们的湖泊能放养更多的鱼类吗?吃鱼更安全了吗?依赖水生生境的物种正在发生什么变化呢?

关键词：清洁水法水污染控制污水控制水生物种生态环境

Predicting the coefficient of friction in a sliding contact by applying machine learning to acoustic emission data

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Friction 2024年第6期12卷 1299-1321页

作者： robert GUTIERREZ Tianshi FANG robert MAINWARING Tom REDDYHOFF Tribology Group Department of Mechanical EngineeringImperial College LondonExhibition RoadLondon SW72AZUK Shell Global Solutions(US)Inc.Shell Technology Center Houston 3333 Highway 6 SouthHoustonTX 77082USA Shell International Petroleum Company Limited Shell CentreYork RoadLondon SE17NAUK

It is increasingly important to monitor sliding interfaces within machines,since this is where both energy is lost,and failures *** emission(AE)techniques offer a way to monitor contacts remotely without requiring transparent or electrically conductive ***,acoustic data from sliding contacts is notoriously complex and difficult to ***,we simultaneously measure coefficient of friction(with a conventional force transducer)and acoustic emission(with a piezoelectric sensor and high acquisition rate digitizer)produced by a steel‒steel rubbing *** data is then used to train machine learning(ML)algorithms(e.g.,Gaussian process regression(GPR)and support vector machine(SVM))to correlated acoustic emission with *** training requires the dense AE data to first be reduced in size and a range of processing techniques are assessed for this(e.g.,down-sampling,averaging,fast Fourier transforms(FFTs),histograms).Next,fresh,unseen AE data is given to the trained model and the resulting friction predictions are compared with the directly measured *** is excellent agreement between the measured and predicted friction when the GPR model is used on AE histogram data,with root mean square(RMS)errors as low as 0.03 and Pearson correlation coefficients reaching ***,predictions remain accurate despite changes in test conditions such as normal load,reciprocating frequency,and stroke *** paves the way for remote,acoustic measurements of friction in inaccessible locations within machinery to increase mechanical efficiency and avoid costly failure/needless maintenance.

关键词： acoustic emission condition monitoring friction machine learning Gaussian process regression support vector machine

A general mirror equivalence theorem for coset vertex operator algebras

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Science China Mathematics 2024年第10期67卷 2237-2282页

作者： robert McRae Yau Mathematical Sciences Center Tsinghua UniversityBeijing 100084China

We prove a general mirror duality theorem for a subalgebra U of a simple conformal vertex algebra A and its commutant V=ComA(U).Specifically,we assume that A≌■_(i∈I)U_(i)■V_(i) as a U■V-module,where the U-modules Uiare simple and distinct and are objects of a semisimple braided ribbon category of Umodules,and the V-modules Viare semisimple and contained in a(not necessarily rigid) braided tensor category of *** also assume U=ComA(V).Under these conditions,we construct a braid-reversed tensor equivalence τ:u_(A)→v_(A),where u_(A)is the semisimple category of U-modules with simple objects Ui,i∈I,and v_(A)is the category of V-modules whose objects are finite direct sums of *** particular,the V-modules Viare simple and distinct,and v_(A)is a rigid tensor *** an application,we find a rigid semisimple tensor subcategory of modules for the Virasoro algebra at central charge 13+6p+6p^(-1),p∈Z_(≥2), which is braided tensor equivalent to an abelian 3-cocycle twist of the category of finite-dimensional ***,the Virasoro vertex operator algebra at central charge 13+6p+6p^(-1)is the PSL_(2)(C)-fixed-point subalgebra of a simple conformal vertex algebra w(-p),analogous to the realization of the Virasoro vertex operator algebra at central charge 13-6p-6p^(-1)as the PSL_(2)(C)-fixed-point subalgebra of the triplet algebra W(p).

关键词： vertex operator algebras coset conformal eld theory braid-reversed tensor equivalence Virasoro algebra

Necrotic enteritis and antibiotic-free production of broiler chickens:Challenges in testing and using alternative products

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Animal Nutrition 2024年第01期16卷 288-298页

作者： robert J.Moore School of Science RMIT University

The global trend towards raising broiler chickens without the use of in-feed antibiotics(IFAs) means that there is an ongoing need to develop alternative treatments capable of delivering the benefits that IFAs previously provided. IFAs supported the productivity performance of chickens and played a key role in maintaining their health. Necrotic enteritis(NE) is an important disease of broilers that affects health,productivity, and welfare, and was previously well controlled by IFAs. However, with the reduction in IFA use, NE is resurgent in some countries. Vaccines and various feed additives, including pre-, pro-, and postbiotics, phytobiotics, fatty acids, and phage therapies have been introduced as alternative methods of NE control. While some of these feed additives have specific activity against the NE pathogen, Clostridium perfringens, most have the more general goal of reinforcing gut health. Extensive reviews of the effects of many of these feed additives on gut health have been published recently. Hence, rather than cover previously well reviewed areas of research this review focuses on the challenges and pitfalls in undertaking experimental assessment of alternative NE treatments and translating laboratory research to real world commercial production settings. The review is based on the author's particular experience,reading, thoughts, and analysis of the available information and inevitably presents a particular understanding that is likely to be at odds with others thinking on these issues. It is put forward to stimulate thinking and discussion on the issues covered.

关键词： Necrotic enteritis Clostridium perfringens Vaccines Feed additive Farm management