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  • 1
    Keywords: Machine learning-Congresses. ; Computer security-Congresses. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (163 pages)
    ISBN: 9783030878399
    Series Statement: Communications in Computer and Information Science Ser. ; v.1482
    DDC: 006.31
    Language: English
    Note: Intro -- Preface -- Organization -- Contents -- Machine Learning for Security -- STAN: Synthetic Network Traffic Generation with Generative Neural Models -- 1 Introduction -- 2 Related Work -- 3 Problem Definition -- 4 Proposed Method -- 4.1 Joint Distribution Factorization -- 4.2 Neural Network Architecture -- 4.3 IP Address and Port Number Modeling -- 4.4 Baselines -- 4.5 Evaluation Metrics -- 5 Experimental Results -- 5.1 Understanding STAN Using Simulated Data -- 5.2 Real Network Traffic Data -- 6 Conclusion and Future Work -- References -- Machine Learning for Fraud Detection in E-Commerce: A Research Agenda -- 1 Introduction -- 2 An Operational Model of an Anti-fraud Department -- 2.1 Entities and Relations in the Operational Model -- 2.2 Research Topics -- 3 Investigation Support -- 3.1 Summary of the Literature -- 3.2 Open Research Challenges -- 4 Decision-Making -- 4.1 Summary of the Literature -- 4.2 Open Research Challenges -- 5 Selection Bias in Labels -- 5.1 Summary of the Literature -- 5.2 Open Research Challenges -- 6 Concept Drift -- 6.1 Summary of the Literature -- 6.2 Open Research Challenges -- 7 ML-Investigator Interaction -- 7.1 Summary of the Literature -- 7.2 Open Research Challenges -- 8 Model Deployment and Monitoring -- 8.1 Summary of the Literature -- 8.2 Open Research Challenges -- 9 Conclusion -- References -- Few-Sample Named Entity Recognition for Security Vulnerability Reports by Fine-Tuning Pre-trained Language Models -- 1 Introduction -- 2 Problem Definition and Challenges -- 2.1 Few-Sample Named Entity Recognition -- 2.2 Named Entity Recognition for Vulnerability Reports -- 2.3 Data-Specific Challenges -- 3 Few-Sample NER for Vulnerability Reports -- 3.1 Fine-Tuning Pre-trained Language Models with Hundreds of Training Labels -- 3.2 Few-Shot Named Entity Recognition -- 4 Experiments -- 4.1 Datasets. , 4.2 Evaluation Metrics -- 4.3 Experimental Setup -- 4.4 Experimental Results: Fine-Tuning on the memc Category -- 4.5 Experimental Results: Transfer Learning on the Other 12 Categories -- 5 Related Work -- 5.1 Information Extraction in Public Vulnerability Database -- 5.2 Named Entity Recognition for Computer Security -- 5.3 Few-Sample Named Entity Recognition -- 6 Conclusions and Future Work -- A Dataset Statistics -- References -- Malware Attack and Defense -- DexRay: A Simple, yet Effective Deep Learning Approach to Android Malware Detection Based on Image Representation of Bytecode -- 1 Introduction -- 2 Approach -- 2.1 Image Representation of Android Apps -- 2.2 Deep Learning Architecture -- 3 Study Design -- 3.1 Research Questions -- 3.2 Dataset -- 3.3 Empirical Setup -- 4 Study Results -- 4.1 RQ1: How Effective is DexRay in the Detection of Android Malware? -- 4.2 RQ2: How Effective is DexRay in Detecting New Android Malware? -- 4.3 RQ3: What is the Impact of Image-Resizing on the Performance of DexRay? -- 4.4 RQ4: How Does App Obfuscation Affect the Performance of DexRay? -- 5 Discussion -- 5.1 Simple But Effective -- 5.2 The Next Frontier in Malware Detection? -- 5.3 Explainability and Location Concerns -- 5.4 Threats to Validity -- 6 Related Work -- 6.1 Machine Learning-Based Android Malware Detection -- 6.2 Deep Learning-Based Android Malware Detection -- 6.3 Image-Based Malware Detection -- 7 Conclusion -- References -- Attacks on Visualization-Based Malware Detection: Balancing Effectiveness and Executability -- 1 Introduction -- 2 Background and Related Work -- 2.1 Malware Visualization -- 2.2 Traditional Malware Camouflage -- 2.3 Adversarial Machine Learning -- 2.4 SoK of Existing Literatures -- 3 Robust Adversarial Example Attack Against Visualization-Based Malware Detection -- 3.1 Mask Generator -- 3.2 AE Generator. , 3.3 NOP Generator -- 3.4 AE Optimizer -- 4 Evaluation -- 4.1 Experiment Setup -- 4.2 Results -- 5 Discussion -- 5.1 Limitations -- 5.2 Future Work -- 6 Conclusion -- References -- A Survey on Common Threats in npm and PyPi Registries -- 1 Introduction -- 2 Background -- 2.1 Dependencies and Dependency Trees -- 2.2 Package Manager -- 2.3 Software Supply-Chain Attacks -- 2.4 Typosquatting and Combosquatting -- 2.5 Machine Learning -- 3 Motivation -- 4 General Overview of Vulnerabilities in npm and PyPi -- 4.1 Direct, Indirect Dependencies, and Heavy Code Reuse -- 4.2 Technical Lag -- 4.3 Squatting Attacks -- 4.4 Maintainers and Collaborators -- 4.5 Trivial Packages or Micropackages -- 4.6 PyPi Overview -- 4.7 Noteworthy Incidents -- 5 Discussion -- 5.1 Suggested Countermeasures -- 5.2 Future Direction -- 6 Conclusion -- References -- Author Index.
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  • 2
    Publication Date: 2021-05-19
    Description: A number of studies focus on the pore-water pressure in seabed under the waves and seabed instability induced by liquefaction, but rarely on the wave pressure of liquefied soil. In this paper, flume tests were performed at varying wave heights under both conditions of liquefied and stable seabed. The total pressures equal to soil pressures and pore water pressures were measured and analyzed at each depth. The results showed that the liquefied seabed had little difference from the stable seabed on the peak pressures. However, the pressure amplitude of the liquefied soil increased by several to 10 times and decreased faster with increasing soil depths, compared with the stable soil. According to the experiments and further analysis, an empirical equation between pressure amplitude of the liquefied soil and wave parameters was put forward under the flume test. The results provide a valuable reference for engineering applications.
    Description: Published
    Keywords: Silty soil ; Wave pressure ; Liquefaction ; Water flume test
    Repository Name: AquaDocs
    Type: Journal Contribution , Not Known
    Format: pp.29-42
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 459-463 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Both optical transmission spectroscopy and photothermal deflection spectroscopy are used to determine the spectra of C70 thin films over a wide energy range (0.6–6.5 eV). Based on a molecular orbital model, the optical transitions for the C70 thin film are analyzed. The weak absorption spectra of C70 thin films are similar to that of an amorphous semiconductor. The optical energy gap is derived by a Tauc plot as 1.66 eV. The gap region can be described in terms used for amorphous semiconductors, having features such as an Urbach edge and subgap defect absorption, which are interpreted as a broadening due to disorder or impurities. The effects of the deflection medium on the weak absorption spectra of C70 films are discussed. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] RNA interference (RNAi) holds considerable promise as a therapeutic approach to silence disease-causing genes, particularly those that encode so-called ‘non-druggable’ targets that are not amenable to conventional therapeutics such as small molecules, proteins, or monoclonal antibodies. ...
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Toll-like receptors (TLRs) are activated by pathogen-associated molecular patterns to induce innate immune responses and production of pro-inflammatory cytokines, interferons and anti-inflammatory cytokines. TLRs activate downstream effectors through adaptors that contain ...
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 82 (1997), S. 893-895 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The fast decay effect of energy in electromagnetic (EM) radiation as deduced from the EM missile theory is demonstrated to be unrealistic. The inferences drawn from the EM missile results involving such a fast decay effect must be modified by taking into account the contribution from the band-limited spectrum, which will yield reasonable results. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Science Ltd
    European journal of neuroscience 20 (2004), S. 0 
    ISSN: 1460-9568
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Our previous data based on an imaging study suggested that, in cat area 17, the representations of cardinal orientations overlap less than the representation of their nearby angles. The purpose of this study was to further investigate the underlying single-cell properties. Optical imaging was performed first to map the cortical regions corresponding to the four principal contours, the two cardinals and the two obliques. The cortical region activated by a principal orientation but not by the +10° or −10° neighbouring angles, namely the area with optically relative independent orientation selectivity (RIOS), was mapped together with the regions that overlapped with the +10° and/or −10° neighbouring angles (non-RIOS). Electrode penetrations were targeted to the RIOS and non-RIOS regions in each of the four orientations. A comparison between the RIOS and the non-RIOS regions documented a significantly higher percentage of cells with the orientation preference of the cardinal orientations in the cardinal RIOS region than that seen in the other regions. Additionally, the difference in the tuning width of cells between the RIOS and non-RIOS in the cardinal region was significantly larger than the difference between the RIOS and non-RIOS in the oblique region. The cells in the cardinal RIOS region were tuned more sharply and the cells in cardinal non-RIOS region more broadly than the oblique RIOS and/or the non-RIOS region, which showed no significant difference. These data strongly suggest the existence of functional segregation in the region corresponding to the cardinal contours.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Westerville, Ohio : American Ceramics Society
    Journal of the American Ceramic Society 86 (2003), S. 0 
    ISSN: 1551-2916
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A type of aluminosilicate that has a good wetting property for molybdenum disilicide (MoSi2) was added to a MoSi2 matrix to study the effects on the microstructure and low-temperature oxidation. It was found that the composites had not only good low-temperature oxidation resistance but also high thermal shock resistance when the added oxides formed a network microstructure in the matrix. There was no appreciable oxidation gain for MoSi2/oxide composites with a network microstructure at 773 K for 2500 h. The results indicate that microstructure design is a simple and effective solution to preventing the low-temperature oxidation of MoSi2.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 88 (2000), S. 3689-3694 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Effects of PH3/H2 (PH3/H2=10%) plasma passivation of GaAs grown on Si substrate have been investigated in detail. It is observed that both the surface phosphidization and defect hydrogenation can be realized simultaneously with a reduced plasma-induced damage. The optical and electrical properties of GaAs on Si are effectively improved by PH3/H2 plasma exposure due to the passivation of bulk and surface defects-related nonradiative recombination centers by incorporation of hydrogen (H) and phosphorous (P) atoms. As a result, the PH3/H2 plasma exposed GaAs Schottky diodes on Si show an increase in the reverse breakdown voltage by a factor of about 1.6, and the as-passivated GaAs solar cell grown on Si shows an increase in the conversion efficiency from 15.9% to 18.6% compared to that of the as-grown samples. The passivated GaAs devices on Si show outstanding thermal stability, which is probably due to the active participation of both H and P atoms in the PH3/H2 plasma passivation process. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 80 (2002), S. 401-403 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The second-order susceptibilities in the ZnO films have been studied systemically. In very thin films, we observe an enhancement of second-order susceptibilities, which is larger than that of single-crystal ZnO. It was also observed that the second-order susceptibilities for ZnO films depend on the thickness but not on the film growth technique used (reactive sputtering or plasma-enhanced chemical vapor deposition). We suggest a mechanism to explain the reduction in the second-order susceptibilities of the thicker films. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
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