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Binary Multifold Encryption Technique for Complex Cloud Systems

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Computer Systems Science & Engineering 2022年第9期42卷 1199-1213页

作者： N.ansgar Mary T.Latha Department of Information and Technology St.Xavier’s Catholic College of EngineeringTamil Nadu629001India Department of Electronics and Communication Engineering St.Xavier’s Catholic College of EngineeringTamil Nadu629001India

Data security is a major cloud computing issue due to different usertransactions in the system. The evolution of cryptography and cryptographic analysis are regarded domains of current research. deoxyribo nucleic acid (DNA) cryptography makes use of DNA as a sensing platform, which is then manipulated usinga variety of molecular methods. Many security mechanisms including knowledgebased authentication, two-factor authentication, adaptive authentication, multifactorauthentication and single password authentication have been deployed. These cryptographic techniques have been developed to ensure confidentiality, but most ofthem are based on complex mathematical calculations and equations. In the proposed approach, a novel and unique Hybrid helix scuttle-deoxy ribo nucleic acids(HHS-DNA) encryption algorithm has been proposed which is inspired by DNAcryptography and Helix scuttle. The proposed HHS-DNA is a type of multifold binary version of DNA (MF-BDNA). The major role of this paper is to present a multifold HHS-DNA algorithm to encrypt the cloud data assuring more security with lesscomplexity. The experimentation is carried out and it reduces the encryption time,cipher text size, and improves throughput. When compared with previous techniques, there is a 45% improvement in throughput, 37% fast in encryption time,54.67% cipher text size. The relevant experimental results and foregoing analysisshow that this method is of good robustness, stability, and security.

关键词： Cryptography cloud network deoxy ribo nucleic acid(DNA) encryption security cloud service provider(CSP)

Landing in Ski Jumping: A Review About its Biomechanics and the Connected Injuries

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Journal of Science in Sport and Exercise 2021年第3期3卷 238-248页

作者： Veronica Bessone ansgar Schwirtz Department of Biomechanics in Sports Faculty of Sport and Health SciencesTechnical University of MunichMunichBavariaGermany

The present review deals with the current scientific knowledge related with ski jump landing.A specific focus is given on the landing biomechanics,the methods utilized for its analysis and the injuries connected to the landing *** the demonstrated importance for the safety and the performance of ski jumpers,the landing and its preparation are rarely *** this paper,after having firstly described the execution of landing and its preparation and the reason why is impor-tant to analyze it,an overview of the current status of the research related to the landing biomechanics is reported(kinetics,kinematics,electromyographic activation,aerodynamics,computer simulation).The third part describes the methods and technologies utilized in literature to analyze the landing and its preparation(video cameras,inertial sensors,force insoles,wind tunnel and computer simulation).After that,an overview of the injuries related to landing is *** final section proposes future research in the field of biomechanics of ski jump landing in different fields,such as computer simulations,kinematic analysis,equipment development and biomechanics of female athletes.

关键词： Feedback Sensors Prevention Kinetics Kinematics Winter sports

Association of autoimmune hepatitis and systemic lupus erythematodes:A case series and review of the literature

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World Journal of Gastroenterology 2014年第35期20卷 12662-12667页

作者： Claudia Beisel Christina Weiler-Normann Andreas Teufel ansgar W Lohse Department of Internal Medicine University Medical Center Hamburg-Eppendorf Department of Internal Medicine Johannes Gutenberg Universit?t Mainz Department of Internal Medicine University Hospital Regensburg

Liver test abnormalities have been described in up to 60% of patients with systemic lupus erythematodes(SLE) at some point during the course of their *** treatment with potentially hepatotoxic drugs or viral hepatitis is commonly considered to be the main cause of liver disease in SLE ***,in rare cases elevated liver enzymes may be due to concurrent autoimmune hepatitis(AIH).To distinguish whether the patient has primary liver disease with associated autoimmune clinical and laboratory features resembling SLE- such as AIH- or the elevation of liver enzymes is a manifestation of SLE remains a difficult challenge for the treating ***,we present six female patients with complex autoimmune disorders and *** charts were reviewed in order to investigate the complex relationship between SLE and *** patients had coexisting autoimmune disease in their medical *** the time of diagnosis of AIH,patients presented with arthralgia,abdominal complaints,cutaneous involvement and fatigue as common *** patients fulfilled the current diagnostic criteria of both,AIH and *** of acute hepatitis was achieved in all cases after the initiation of immunosuppressive *** addition to this case study a literature review was conducted.

关键词： Systemic lupus erythematodes Elevated liver enzymes Autoimmune hepatitis

Methodology for Road Defect Detection and Administration Based on Mobile Mapping Data

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Computer Modeling in Engineering & Sciences 2021年第10期129卷 207-226页

作者： Marina Davidovic Tatjana Kuzmic Dejan Vasic Valentin Wich ansgar Brunn Vladimir Bulatovic Department for Civil Engineering and Geodesy Faculty of Technical SciencesUniversity of Novi SadNovi Sad21000Serbia University of Applied Sciences Wurzburg-Schweinfurt W urzburg-Schweinfurt97070Germany

A detailed inspection of roads requires highly detailed spatial data with sufficient precision to deliver an accurate geometry and to describe road defects *** paper presents a novel method for the detection of road *** input data for road defect detection included point clouds and orthomosaics gathered by mobile mapping *** defects were categorized in three major groups with the following geometric primitives:points,lines and *** method suggests the detection of point objects from matched point clouds,panoramic images and ortho *** were mapped as point,line or polygon geometries,directly derived from orthomosaics and panoramic *** the geometric position of road defects,all objects were assigned to a variety of attributes:defect type,surface material,center-of-gravity,area,length,corresponding image of the defect and degree of damage.A spatial dataset comprising defect values with a matching data type was created to perform the attribute analysis quickly and *** final product is a spatial vector data set,consisting of points,lines and polygons,which contains attributes with further information and *** paper demonstrates that mobile mapping suits a large-scale feature extraction of road infrastructure *** its simplicity and flexibility,the presented methodology allows it to be easily adapted to extract further feature types with their *** makes the proposed approach a vital tool for data extraction settings with multiple mobile mapping data analysts,e.g.,offline crowdsourcing.

关键词： Deformation detection engineering visual inspection data analyses mobile mapping GIS

Accurate energy barriers for catalytic reaction pathways: an automatic training protocol for machine learning force fields

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npj Computational Materials 2023年第1期9卷 479-488页

作者： Lars L.Schaaf Edvin Fako Sandip De ansgar Schäfer Gábor Csányi Engineering Laboratory University of CambridgeCB21PZ CambridgeUK BASF SE Carl-Bosch-Straße 3867056 LudwigshafenGermany

We introduce a training protocol for developing machine learning force fields(MLFFs),capable of accurately determining energy barriers in catalytic reaction *** protocol is validated on the extensively explored hydrogenation of carbon dioxide to methanol over indium *** the help of active learning,the final force field obtains energy barriers within 0.05 eV of Density Functional *** to the computational speedup,not only do we reduce the cost of routine in-silico catalytic tasks,but also find an alternative path for the previously established rate-limiting step,with a 40%reduction in activation ***,we illustrate the importance of finite temperature effects and compute free energy *** transferability of the protocol is demonstrated on the experimentally relevant,yet unexplored,top-layer reduced indium oxide *** ability of MLFFs to enhance our understanding of extensively studied catalysts underscores the need for fast and accurate alternatives to direct ab-initio simulations.

关键词： surface catalytic fields

Proteomic and molecular investigations revealed that Acidithiobacillus caldus adopts multiple strategies for adaptation to NaCl stress

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Chinese Science Bulletin 2014年第3期59卷 301-309页

作者： Xu Guo Chengying Jiang Yuanming Luo Mingjiang Zhang ansgar Poetsch Shuangjiang Liu State Key Laboratory of Microbial Resources Institute of MicrobiologyChinese Academy of Sciences University of Chinese Academy of Sciences Environmental Microbiology and Biotechnology Research Center Institute of MicrobiologyChinese Academy of Sciences Lehrstuhl for Biochemie der Pflanzen Ruhr Universitaet

Acidithiobacillus caldus plays an important role in commercial *** understand how NaCl stress adaptation occurs in ***,we grew *** strain SM-1 in media containing high NaCl ***-1 grew at concentrations of up to 1.0-mol L^(-1)NaCl,but growth was severely inhibited at higher *** analysis showed that SM-1 used multiple strategies to respond to NaCl *** addition to several heatshock proteins,enzymes involved in proline biosynthesis increased under NaCl *** addition,two DNA-binding proteins and a third protein of unknown function(Atc_(1291)),which was subsequently identified as a putative single-stranded DNA-binding protein,were up-regulated in the presence of NaCl *** DNA-binding proteins might play a role in response to osmotic ***_(1291)was cloned and expressed in Escherichia ***,we found that *** BL21/pET28a-atc_(1291)grew to higher cell densities than *** BL21/pET28a,regardless of NaCI *** to Atc_(1291)were identified in several groups of *** role of Atc_(1291)in enhancing cell growth needs further investigation.

关键词：蛋白质组学盐胁迫 DNA结合蛋白 NaCl胁迫显示分子抑制浓度大肠杆菌

Combined glucocorticoid and antiviral therapy of hepatitis B virus-related liver failure

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World Journal of Gastroenterology 2015年第7期21卷 2214-2219页

作者： Jan-Hendrik Bockmann Maura Dandri Stefan Lüth Nadine Pannicke ansgar W Lohse 1~(st) Deparment of Medicine University Medical Center Hamburg-Eppendorf

Acute hepatic failure due to hepatitis B virus(HBV)can occur both during primary infection as well as after reactivation of chronic *** recommend considering antiviral therapy in both situations,although evidence supporting this recommendation is *** HBV is not directly cytopathic,the mechanism leading to fulminant hepatitis B is thought to be primarily ***,immunosuppression combined with antiviral therapy might be a preferred therapeutic intervention in acute liver failure in hepatitis *** wereport our favourable experience in three hepatitis B patients with fulminant hepatic failure who were treated by combining high-dose steroid therapy with standard antiviral treatment,which resulted in a rapid improvement of clinical and liver parameters.

关键词： Acute liver failure Hepatitis B virus Prednisolone

The Presence and Localization of Thioredoxins in Diatoms, Unicellular Algae of Secondary Endosymbiotic Origin

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Molecular Plant 2009年第3期2卷 468-477页

作者： Till Weber ansgar Gruber Peter G. Kroth Fachbereich Biologie Universitat Konstanz 78457 Konstanz Germany

Diatoms are unicellular algae of great ecological importance. So far, very little is known about the regulation of carbon fixation in these algae; however, there are strong indications that in diatom plastids, the ferredoxin/thioredoxin system might play a minor role in redox regulation of the photosynthetic reactions compared to land plants. Until now, it is unknown whether there are fewer or other target enzymes of thioredoxins in diatoms. Only a single potential target enzyme for thioredoxin, the plastidic fructose-l,6-bisphosphatase, has yet been identified. Nevertheless, during the annotation of the genome of the diatom Phaeodactylum tricornutum, we identified several genes encoding different thioredoxins. Utilizing in vivo expression of GFP：presequence fusion proteins in P. tricornutum, we were able to show that these thioredoxins are targeted either into plastids, mitochondria, or remain in the cytosol. Surprisingly, two of the three usually cytosolic thioredoxin h proteins are apparently plastid associated and, together with a thioredoxin reductase, putatively located in the periplastidic compartment. This is one of the few indications for so far unknown enzymatic reactions in the space between the two pairs of diatom plastid envelope membranes.

关键词： Carbohydrate metabolism enzymology genomics diatoms and phytoplankton

Fiber Optic Displacement Sensor with New Reflectivity Compensation Method

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Journal of Sensor Technology 2013年第2期3卷 21-24页

作者： ansgar Wego Gundolf Geske ASTECH Angewandte Sensortechnik GmbH Rostock Germany Department of Electrical Engineering Hochschule Wismar Wismar Germany

In this paper, a fiber optic displacement sensor with a new reflectivity compensation method is presented. The proposed compensation method is based on two light receiving channels with characteristic displacement sensitivities. The sensitivity characteristic for each channel is achieved by using fibers with different numerical apertures. The ratio of the intensity values of the two receiving channels is a function of the object displacement and fairly independent from the reflectivity of the measured object. The sensor is characterized by a well-defined measurement spot. By use of a focus lens mounted onto the fiber optics probe head, the object displacement range can be extended. The sensor is suitable for measurements with changing object reflectivity and demanding distance ranges.

关键词： Fiber Optics Displacement Sensor Reflectivity Compensation