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Content sensitivity based access control framework for Hadoop

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Digital Communications and Networks 2017年第4期3卷 213-225页

作者： Ashwin Kumar T.K. Hong Liu johnson P. Thomas Xiaofeh Hou Department of Computer Science Oklahoma State University Stillwater OK USA

Big data technologies have seen tremendous growth in recent years. They are widely used in both industry and academia. In spite of such exponential growth, these technologies lack adequate measures to protect data from misnse/abuse. Corporations that collect data from multiple sources are at risk of liabilities due to the exposure of sensitive information. In the current implementation of Hadoop, only file-level access control is feasible. Providing users with the ability to access data based on the attlibutes in a dataset or the user＇s role is complicated because of the sheer volume and multiple formats （structured, unstructured and semi-structured） of data. In this paper, we propose an access control framework, which enforces access control policies dynamically based on the sensitivity of the data. This framework enforces access control policies by harnessing the data context, usage patterns and informat/on sensitivity. Information sensitivity changes over time with the addition and removal of datasets, which can lead to modifications in access control decisions. The proposed framework accommodates these changes. The proposed framework is automated to a large extent as the data itself determines the sensitivity with minimal user intervention. Our experimental results show that the proposed framework is capable of enforcing access control policies on non-multimedia datasets with minimal overhead.

关键词： Access control Data driven information sensitivity Privacy Information value

Multiple Genesis of Fluid and Melt during Exhumation of Deeply-Subducted UHP Eclogite

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Acta Geologica Sinica(English Edition) 2021年第S1期95卷 65-67页

作者： WANG Lu WANG Songjie FENG Peng WANG Zhuocheng Michael BROWN Tim johnson State Key Lab for Geological Processes and Mineral Resources and Center for Global TectonicsSchool of Earth SciencesChina University of GeosciencesWuhan 430074China College of Earth Science and Engineering Shandong University of Science and TechnologyQingdaoShandong 266590China Laboratory for Crustal Petrology Department of GeologyUniversity MarylandCollege ParkMD 20742USA School of Earth and Planetary Sciences Curtin UniversityGPO Box U1987PerthWA 6845Australia

Supercritical fluid and granitic melt are commonly generated as pressure decreases during exhumation of deeply subducted continental crust from mantle depths,promoting crust–mantle interaction,changing the rheology o... 详细信息

关键词： partial melting eclogite omphacite breakdown supercritical fluid Sulu belt

Delayed presentation of a loose body in undisplaced paediatric talar neck fracture

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World Journal of Orthopedics 2014年第3期5卷 398-401页

作者： Vishal Patel Benjamin Bloch Nicholas johnson Jitendra Mangwani Department of Trauma and Orthopedics Musculoskeletal DirectorateUniversity Hospitals of Leicester NHS TrustLeicester Royal InfirmaryLeicester LE1 5WW United Kingdom

Fractures of the talus are rare in children.A high index of suspicion is needed to avoid missing such an injury,which is not an uncommon occurrence especially with undisplaced *** present an unusual case of an undisplaced talar neck fracture in a five-year-old child leading to a delayed presentation of a symptomatic osteochondral loose body in the ankle *** our knowledge there are no reports in the literature of osteochondral loose bodies occurring in conjunction with an associated undisplaced talar neck fracture in either children or *** loose body was removed using anterior ankle *** child had an uneventful post operative recovery and regained full range of movement and function of his ankle joint and was discharged at one year *** aim to highlight the need to have a low threshold to further evaluate symptomatic children after fracture healing of an undisplaced talar neck fracture for a possible associated loose bodyin the ankle joint.

关键词： Talus Fracture Loose body Ankle arthroscopy Children

Assessment of Knowledge,Attitude,and Practice in Forensic Dental Anatomy and Histology among Dental Practitioners

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Journal of Forensic Science and Medicine 2020年第3期6卷 89-92页

作者： Supriya Soni Payal Shirpure Ujwal Shahu Abraham johnson Laboratory of Forensic Odontology Institute of Forensic ScienceGujarat Forensic Sciences UniversityGandhinagarGujaratIndia

Dental anatomy and histology is one of the fundamental subjects and a key to comprehend the act of *** features such as tooth morphology and variations in shape and size play a vital role in the area of forensic *** odontology is a challenging field that involves the application of such knowledge of dental sciences in the identification of deceased *** aim and objective was to assess and evaluate the knowledge,attitude,and practice regarding dental anatomy and histology in forensic investigation among dental practitioners.A cross-sectional survey was carried out among 217 dental practitioners from Maharashtra who in their day-to-day life may experience instances of forensic *** information was collected through telephonic interview by means of a pretested,close-ended *** our stud%the general awareness about forensic odontology was found to be more among MDS dental practitioners than BDS dental ***,there is a lack of adequate legal knowledge and forensic practices among the dentists of Mumbai and ***,the practitioners did have a positive attitude toward the field and were keen to learn more about *** study is the first of its kind to be conducted in Maharashtra state of India regarding dental anatomy and histology with respect to forensic *** dental practitioners were also aware about the dental anatomy and dental histology with respect to forensic investigation.

关键词： Anatomy dental dentist forensic odontology histology teeth

The development of roadside green swales in the Chinese Sponge City Program:Challenges and opportunities

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Frontiers of Engineering Management 2023年第4期10卷 566-581页

作者： Lingwen Lu Faith Ka Shun Chan Matthew johnson Fangfang Zhu Yaoyang Xu Key Laboratory of Urban Environment and Health Ningbo Observation and Research StationInstitute of Urban EnvironmentChinese Academy of Sciences(CAS)Xiamen361021China School of Geographical Sciences Faculty of Science and EngineeringUniversity of Nottingham Ningbo ChinaNingbo315100China CAS Haixi Industrial Technology Innovation Center in Beilun Zhejiang Key Laboratory of Urban Environmental Processes and Pollution ControlNingbo315830China Water@Leeds Research Institute University of LeedsLeeds LS29JTUK School of Geography University of NottinghamNottinghamshireNG72RDUK Department of Civil Engineering Faculty of Science and EngineeringUniversity of Nottingham Ningbo ChinaNingbo 315100China Zhejiang Key Laboratory of Urban Environmental Processes and Pollution Control CAS Haixi Industrial Technology Innovation Center in BeilunNingbo 315830China

Roadside green swales have emerged as popular stormwater management infrastructure in urban areas,serving to mitigate stormwater pollution and reduce urban surface water ***,there is a limited understanding of the various types,structures,and functions of swales,as well as the potential challenges they may face in the *** recent years,China has witnessed a surge in the adoption of roadside green swales,especially as part of the prestigious Sponge City Program(SCP).These green swales play a crucial role in controlling stormwater pollution and conserving urban water resources by effectively removing runoff pollutants,including suspended solids,nitrogen,and *** review critically examines recent research findings,identifies key knowledge gaps,and presents future recommendations for designing green swales for effective stormwater management,with a particular emphasis on ongoing major Chinese infrastructure *** the growing global interest in bioswales and their significance in urban development,China's current classification of such features lacks a clear definition or specific consideration of ***,policymakers have often underestimated the adverse environmental effects of road networks,as reflected in existing laws and planning *** review argues that the construction and maintenance of roadside green swales should be primarily based on three critical factors:Wellthought-out road planning,suitable construction conditions,and sustainable long-term *** integration of quantitative environmental standards into road planning is essential to effectively address the challenge of pollution from rainfall *** combat pollution associated with roads,a comprehensive assessment of potential pollution loadings should be carried out,guiding the appropriate design and construction of green swales,with a particular focus on addressing the phenomenon of first *** of the major challenges faced in su

关键词： grass swale infiltration swale bioswale wet swale spongecity

Development of a unilateral ureteral obstruction model in cynomolgus monkeys

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Animal Models and Experimental Medicine 2021年第4期4卷 359-368页

作者： Linghong Huang Jia Ni Tanika Duncan Zhizhan Song Timothy S.johnson Immunology Therapeutic Area UCB PharmaSloughUK Research and Development Prisys BiotechnologiesPudongChina

Background:Chronic kidney disease(CKD)has a high global prevalence and large unmet *** to developing new CKD therapies are in vivo models in ***,next-generation antibody,protein,and gene therapies are highly specific,meaning some do not cross-react with rodent *** complicates preclinical development,as established in vivo rodent models cannot be utilized unless tool therapeutics are also *** compounds can be difficult to develop and,if available,typically have different epitopes,sequences,and/or altered affinity,making it unclear how efficacious the lead therapeutic may be,or what dosing regimen to *** address this,we aimed to develop a nonhuman primate model of ***:In vivo rodent unilateral ureteral obstruction(UUO)models kidney fibrosis and is commonly used due to its rapidity,consistency,and *** describe translation of this model to the cynomolgus monkey,specifically optimizing the model duration to allow adequate time for assessment of novel therapeutics prior to the fibrotic ***:We demonstrated that disease developed more slowly in cynomolgus monkeys than in rodents post-UUO,with advanced fibrosis developing by 6 *** tubulointerstitial fibrosis in cynomolgus monkeys was more consistent with human obstructive disease than in rodents,having a more aggressive tubular basement expansion and a higher fibroblast *** fibrosis was also associated with increased transglutaminase activity,consistent with that seen in patients with ***:This cynomolgus monkey UUO model can be used to test potential human-specific therapeutics in kidney fibrosis.

关键词： animal models fibrosis kidney nonhuman primates transglutaminase

Enhanced Field-Based Detection of Potato Blight in Complex Backgrounds Using Deep Learning

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Plant Phenomics 2021年第1期3卷 209-221页

作者： Joe johnson Geetanjali Sharma Srikant Srinivasan Shyam Kumar Masakapalli Sanjeev Sharma Jagdev Sharma Vijay Kumar Dua School of Computing&Electrical Engineering Indian Institute of Technology MandiKamandH.P.India BioX Center School of Basic SciencesIndian Institute of Technology MandiKamandH.P.India ICAR-Central Potato Research Institute H.P.ShimlaIndia

Rapid and automated identification of blight disease in potato will help farmers to apply timely remedies to protect their *** detection of blight disease can be cumbersome and may require trained *** overcome these issues,we present an automated system using the Mask Region-based convolutional neural network(Mask R-CNN)architecture,with residual network as the backbone network for detecting blight disease patches on potato leaves in field *** approach uses transfer learning,which can generate good results even with small *** model was trained on a dataset of 1423 images of potato leaves obtained from fields in different geographical locations and at different times of the *** images were manually annotated to create over 6200 labeled patches covering diseased and healthy portions of the *** Mask R-CNN model was able to correctly differentiate between the diseased patch on the potato leaf and the similar-looking background soil patches,which can confound the outcome of binary *** improve the detection performance,the original RGB dataset was then converted to HSL,HSV,LAB,XYZ,and YCrCb color spaces.A separate model was created for each color space and tested on 417 field-based test *** yielded 81.4%mean average precision on the LAB model and 56.9%mean average recall on the HSL model,slightly outperforming the original RGB color space *** analysis of the detection performance indicates an overall precision of 98%on leaf images in a field environment containing complex backgrounds.

关键词： Deep network backbone

Extracellular quality control in the epididymis

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Asian Journal of Andrology 2007年第4期9卷 500-507页

作者： Gail A. Cornwall H. Henning von Horsten Douglas Swartz Seethal johnson Kim Chau Sandra Whelly Department of Cell Biology and Biochemistry Texas Tech University Health Sciences Center Lubbock TX 79430 USA

The epididymal lumen represents a unique extracellular environment because of the active sperm maturation process that takes place within its confines. Although much focus has been placed on the interaction of epididymal secretory proteins with spermatozoa in the lumen, very little is known regarding how the complex epididymal milieu as a whole is maintained, including mechanisms to prevent or control proteins that may not stay in their native folded state following secretion. Because some misfolded proteins can form cytotoxic aggregate structures known as amyloid, it is likely that control/surveillance mechanisms exist within the epididymis to protect against this process and allow sperm maturation to occur. To study protein aggregation and to identify extracellular quality control mechanisms in the epididymis, we used the cystatin family of cysteine protease inhibitors, including cystatin-related epididymal spermatogenic and cystatin C as molecular models because both proteins have inherent properties to aggregate and form amyloid. In this chapter, we present a brief summary of protein aggregation by the amyloid pathway based on what is known from other organ systems and describe quality control mechanisms that exist intracellularly to control protein misfolding and aggregation. We then present a summary of our studies of cystatinrelated epididymal spermatogenic （CRES） oligomerization within the epididymal lumen, including studies suggesting that transglutaminase cross-linking may be one mechanism of extracellular quality control within the epididymis. （Asian J Androl 2007 July; 9： 500-507）

关键词： epididymis protein aggregation extracellular quality control cystatin transglutaminase

Limited recovery following acellular nerve allograft reconstruction in major peripheral nerve injuries

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Plastic and Aesthetic Research 2023年第1期10卷 676-679页

作者： David Chi Anna Rose johnson Susan E.Mackinnon Division of Plastic and Reconstructive Surgery Department of SurgeryWashington University School of MedicineSaint LouisMO 63110USA

Recent studies suggest that acellular nerve allografts(ANA)have similar efficacy as nerve autografts in certain applications of nerve ***,multiple studies also demonstrate the limitations of nerve allografts,resulting in poor patient *** submission discusses a recent case series of patients who failed allograft use with subsequent histologic analyses of these *** on the treatment of nerve gaps are presented,drawing from our current understanding of allograft and autograft utility in *** taken into account include recipient critical nerve function,existent nerve gap,and nerve diameter.

关键词： Nerve reconstruction peripheral nerve acellular nerve allograft nerve autograft