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GPU based techniques for deep image merging

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Computational Visual Media 2018年第3期4卷 277-285页

作者： Jesse Archer geoff leach Ron van Schyndel School of Science RMIT University

Deep images store multiple fragments perpixel,each of which includes colour and depth,unlike traditional 2D flat images which store only a single colour value and possibly a depth ***,deep images have found use in an increasing number of applications,including ones using transparency and compositing.A step in compositing deep images requires merging per-pixel fragment lists in depth order;little work has so far been presented on fast *** paper explores GPU based merging of deep images using different memory layouts for fragment lists:linked lists,linearised arrays,and interleaved *** also report performance improvements using techniques which leverage GPU memory hierarchy by processing blocks of fragment data using fast registers,following similar techniques used to improve performance of transparency *** report results for compositing from two deep images or saving the resulting deep image before compositing,as well as for an iterated pairwise merge of multiple deep *** results show a 2 to 6 fold improvement by combining efficient memory layout with fast register based merging.

关键词： deep image composite GPU performance

Evaluate the impact of sensor accuracy on model performance in data-driven building fault detection and diagnostics using Monte Carlo simulation

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Building Simulation 2022年第5期15卷 769-778页

作者： Liang Zhang Matt leach National Renewable Energy Laboratory 15013 Denver W PkwyGoldenCOUSA

The performance of data-driven fault detection and diagnostics(FDD)is heavily dependent on ***,sensor inaccuracy and sensor faults are pervasive in building operation:inaccurate and missing sensor readings deteriorate FDD performance;sensor inaccuracy will also affect the selection of sensor for data-driven FDD in the model training process,which is another key factor of data-driven FDD *** accuracy and sensor selection individually are well-studied research topics in this field,but the impact of sensor accuracy on sensor selection and its further impact on FDD performance has not been evaluated and *** this paper,we developed a novel analysis methodology that comprehensively evaluates sensor fault on sensor selection and FDD *** Carlo simulation is applied to deal with multiple stochastic sensor inaccuracy and provide probabilistic analysis results of the impact of sensor inaccuracy on sensor selection and FDD *** methodology focuses on the net impact of fault states across a full sensor *** developed methodology can be used for the early-stage sensor design and operation-stage sensor maintenance.A case study is conducted to demonstrate the analysis methodology using a commercial building model crated to Flexible Research Platform located at Oak Ridge National Laboratory,USA.

关键词： fault detection and diagnostics sensor accuracy sensor fault sensor selection data-driven modeling Monte Carlo simulation

Crohn’s and colitis in children and adolescents

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World Journal of Gastroenterology 2012年第41期18卷 5862-5869页

作者： Andrew S Day Oren Ledder Steven T leach Daniel A Lemberg Department of Gastroenterology Sydney Children's HospitalRandwickSydneyNSW 2031Australia School of Women's and Children's Health University of New South WalesSydneyNSW 2031Australia Department of Paediatrics University of Otago ChristchurchChristchurch 8140New Zealand

Crohn＇s disease and ulcerative colitis can be grouped as the inflammatory bowel diseases （IBD）. These conditions have become increasingly common in recent years, including in children and young people. Although much is known about aspects of the pathogenesis of these diseases, the precise aetiology is not yet understood, and there remains no cure. Recent data has illustrated the importance of a number of genes-several of these are important in the onset of IBD in early life, including in infancy. Pain, diarrhoea and weight loss are typical symptoms of paediatric Crohn＇s disease whereas bloody diarrhoea is more typical of colitis in children. However, atypical symptoms may occur in both conditions： these include isolated impairment of linear growth or presentation with extra-intestinal manifestations such as erythma nodosum. Growth and nutrition are commonly compromised at diagnosis in both Crohn＇s disease and colitis. Consideration of possible IBD and completion of appropriate investigations are essential to ensure prompt diagnosis, the- reby avoiding the consequences of diagnostic delay. Patterns of disease including location and progression of IBD in childhood differ substantially from adult- onset disease. Various treatment options are available for children and adolescents with IBD. Exclusive enteral nutrition plays a central role in the induction of remission of active Crohn＇s disease. Medical and surgical therapies need to considered within the context of a growing and developing child. The overall management of these chronic conditions in children should include multi-disciplinary expertise, with focus upon maintaining control of gut inflammation, optimising nutrition, growth and quality of life, whilst preventing disease or treatment-related complications.

关键词： Children Adolescents Crohn's disease Ulcerative colitis Inflammatory bowel diseases

RF characteristics of wireless capsule endoscopy in human body

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Journal of Central South University 2016年第5期23卷 1198-1207页

作者：王璟琛王炤 Mark leach LEE Sanghyuk Eng Gee Lim HUANG Yi Department of Electronic and Electrical Engineering Xi'an Jiaotong-Liverpool University Department of Electrical Engineering and Electronics The University of Liverpool

The wireless capsule endoscope,as a small electronic device,has conquered some limitations of traditional wired diagnosing tools,such as the uncomfortableness of the cables for the patient and the inability to examine the very convoluted small intestine ***,this technique is still encountering a lot of practical challenges and is looking for feasible *** work investigates the RF performance of the wireless capsule endoscope system by studying the electromagnetic(EM) wave propagation within the human body.A wireless capsule endoscopy transmission channel model is constructed to serve the purpose of investigating signal attenuations according to the relative position between the transmitter and the *** 300-500 MHz,the S_(21) results are regular and do not display any sudden changes,which allows a suitable expression to be derived for S_(21) in terms of frequency and *** results provide useful information for capsule localization.

关键词： wireless capsule endoscopy (WCE) electromagnetic wave propagation signal attenuations positioning transmission channel

SWEET as Sugar： New Sucrose Effluxers in Plants

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Molecular Plant 2012年第4期5卷 766-768页

作者： R. Frank Baker Kristen A. leach David M. Braun Division of Biological Sciences Interdisciplinary Plant Group Missouri Maize Center University of Missouri 110 Tucker Hall Columbia MO 65211

Photosynthesis leads to the fixation of carbon in leaves and to the accumulation of carbohydrates （e.g., sucrose, starch）. This assimilated carbon must be transported from the leaves （source tissues） to non-photosynthetic organs （sink tissues）, such as roots and seeds. Despite the essentiality of this process in plants, a complete understanding of the actors involved in sucrose export from leaves is lacking. SWEET proteins are a newly identified class of sugar transporters that facilitate dif- fusion of sugars across cell membranes down a concentration gradient. In this perspective, we highlight the recent publica- tion of Chen et al. （2012）, which reports that SWEET proteins transport sucrose across cell membranes, are expressed in a subset of phloem parenchyma cells,

关键词： DISEASE-SUSCEPTIBILITY GENE BACTERIAL-BLIGHT TRANSPORTERS RICE RESISTANCE ROLES

Oesophageal atresia: The growth gap

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World Journal of Gastroenterology 2020年第12期26卷 1262-1272页

作者： Isabelle Traini Jessica Menzies Jennifer Hughes Steven Thomas leach Usha Krishnan School of Women’s and Children’s Health University of New South WalesSydneyNSW 2052Australia Department of Nutrition and Dietetics Sydney Children’s HospitalRandwickNSW 2031Australia Department of Speech Pathology Sydney Children’s HospitalRandwickNSW 2031Australia Department of Paediatric Gastroenterology Sydney Children’s HospitalRandwickNSW 2031Australia

Poor growth is an under-recognised yet significant long-term sequelae of oesophageal atresia(OA)*** studies have specifically explored the reasons for growth impairment in this complex *** association between poor growth with younger age and fundoplication appears to have the strongest supportive evidence,highlighting the need for early involvement of a dietitian and speech pathologist,and consideration of optimal medical reflux management prior to referring for anti-reflux ***,it remains difficult to reach conclusions regarding other factors which may negatively influence growth,due to conflicting findings,inconsistent definitions and lack of validated tool *** swallowing and feeding difficulties are particularly frequent in younger children,their relationship with growth remains *** is possible that these morbidities impact on the diet of children with OA,but detailed analysis of dietary composition and quality,and its relationship with these complications and growth,has not yet been *** potential area of research in OA is the role of the microbiota in growth and *** the microbiota has been linked to growth impairment in other paediatric conditions,it is yet to be investigated in *** research is needed to identify the most important contributory factors to poor growth,the role of the intestinal microbiota,and effective interventions to maximise growth and nutritional outcomes in this cohort.

关键词： Oesophageal atresia Growth Malnutrition Feeding difficulty Dysphagia Microbiota

Chest complications in autologous breast reconstruction

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Plastic and Aesthetic Research 2023年第1期10卷 205-215页

作者： Candice M.leach Meredith S.Collins Department of Plastic and Reconstructive Surgery University of Kansas Medical CenterKansas CityKS 66160USA

Complications from autologous free flap reconstruction of the breast can present with both common surgical complications and unique complications at the chest recipient *** review covers complications at the chest recipient site,including chest wall deformity,chronic pain,mastectomy skin flap necrosis,infection,pyoderma gangrenosum,bleeding complications,pneumothorax,chyle leak,and positive internal mammary lymph node metastasis.

关键词： Autologous breast reconstruction complications chest wall deformity pneumothorax mastectomy skin flap necrosis chyle leak internal mammary node metastasis

Functional states of resident vascular stem cells and vascular remodeling

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Frontiers in Biology 2015年第5期10卷 387-397页

作者： Desiree F. leach Mitzi Nagarkatti Prakash Nagarkatti Taixing Cui Department of Cell Biology and Anatomy University of South Carolina School of Medicine Columbia SC 29209 USA Department of Pathology Microbiology and Immunology University of South Carolina School of Medicine Columbia SC 29209 USA

Recent evidence indicates that different types of vascular stem cells （VSCs） reside within the mural layers of arteries and veins. The precise identities of these resident VSCs are still unclear; generally, postnatal vasculature contains multilineage stem cells and vascular cell lineage-specific progenitor/stem cells which may participate in both vascular repair and lesion formation. However, the underlying mechanism remains poorly understood. In this review, we summarize the potential molecular mechanisms, which may control the quiescence and activation of resident VSCs and highlight a notion that the differential states of resident VSCs are directly linked to vascular repair or lesion formation.

关键词： vascular stem cell quiescence activation remodeling

Growth factor delivery using extracellular matrix-mimicking substrates for musculoskeletal tissue engineering and repair

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Bioactive Materials 2021年第7期6卷 1945-1956页

作者： Robert C.H.Gresham Chelsea S.Bahney J.Kent leach UC Davis Department of Biomedical EngineeringDavisCAUSA Steadman Phillippon Research Institute VailCOUSA UCSF Orthopaedic Trauma Institute San FranciscoCAUSA UC Davis Health Department of Orthopaedic SurgeryDavisCAUSA

Therapeutic approaches for musculoskeletal tissue regeneration commonly employ growth factors(GFs)to influence neighboring cells and promote migration,proliferation,or *** promising results in preclinical models,the use of inductive biomacromolecules has achieved limited success in translation to the *** field has yet to sufficiently overcome substantial hurdles such as poor spatiotemporal control and supraphysiological dosages,which commonly result in detrimental side *** presentation and retention of biomacromolecules is regulated by the extracellular matrix(ECM),which acts as a reservoir for GFs via electrostatic *** in the manipulation of extracellular proteins,decellularized tissues,and synthetic ECM-mimetic applications across a range of biomaterials have increased the ability to direct the presentation of *** application of biomaterial technologies utilizing ECM mimetics increases tissue regeneration without the reliance on supraphysiological doses of inductive *** review describes recent strategies to manage GF presentation using ECM-mimetic substrates for the regeneration of bone,cartilage,and muscle.

关键词： Growth factor Extracellular matrix Spatiotemporal control Tissue engineering Affinity