cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
ЎЗБЕКИСТОНДА ЧЕГАРА ҚЎШИНЛАРИ ШАХСИЙ ТАРКИБИНИ ВАТАНПАРВАРЛИК РУҲИДА ТАРБИЯЛАШДА МАТБУОТНИНГ РОЛИ
Creators: name: Шаймарданов, Раззоқ
Publisher: name: Zenodo
Year: 2025

description: Ушбу мақолада мустақиллик йилларида Ўзбекистон Чегара қўшинлари ҳарбий хизматчиларини ватанпарварлик руҳида тарбиялаш, ватанга садоқат, жасорат, шижоат, мардлик ва бошқа туйғуларни шакллантиришдаги матбуотнинг роли очиб берилади. Шунингдек, ҳарбий ватанпарварлик ғоялари, ижтимоий-сиёсий, маънавий-маърифий, фалсафий жиҳатлари, “ватанпарварлик” тарбиясининг давлат аҳамиятига молик маънавий-ахлоқий асоси экани кўрсатиб ўтилади.
Neutral kaon mixing beyond the standard model with nf=2+1 chiral fermions
Creators: name: Boyle, P. A.
name: Garron, N.
name: Hudspith, R. J.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We compute the hadronic matrix elements of the four-quark operators needed for the study of neutral kaon mixing beyond the Standard Model (SM). We use nf=2+1 flavours of domain-wall fermions (DWF) which exhibit good chiral-flavour symmetry. The renormalization is performed non-perturbatively through the RI-MOM scheme and our results are converted perturbatively to MSbar. The computation is performed on a single lattice spacing a=0.086 fm with a lightest unitary pion mass of 290 MeV. The various systematic errors, including the discretisation effects, are estimated and discussed. Our results confirm a previous quenched study, where large ratios of non-SM to SM matrix elements were obtained.
description: 5 pages, 4 figures, 1 table. v2 paper version, R3 and B3 corrected, conversion to 2GeV added, references added
Remotely Keyed Cryptographics: Secure Remote Display Access Using (Mostly) Untrusted Hardware
Creators: name: Cook, Debra L.
name: Baratto, Ricardo A.
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2005
Subjects: Computer science

description: Software that covertly monitors user actions, also known as spyware, has become a first-level security threat due to its ubiquity and the difficulty of detecting and removing it. Such software may be inadvertently installed by a user that is casually browsing the web, or may be purposely installed by an attacker or even the owner of a system. This is particularly problematic in the case of utility computing, early manifestations of which are Internet cafes and thin-client computing. Traditional trusted computing approaches offer a partial solution to this by significantly increasing the size of the trusted computing base (TCB) to include the operating system and other software. We examine the problem of protecting a user accessing specific services in such an environment. We focus on secure video broadcasts and remote desktop access when using any convenient, and often untrusted, terminal as two example applications. We posit that, at least for such applications, the TCB can be confined to a suitably modified graphics processing unit (GPU). Specifically, to prevent spyware on untrusted clients from accessing the user's data, we restrict the boundary of trust to the client's GPU by moving image decryption into GPUs. This allows us to leverage existing capabilities as opposed to designing a new component from scratch. We discuss the applicability of GPU-based decryption in the two scenarios. We identify limitations due to current GPU capabilities and propose straightforward modifications to GPUs that will allow the realization of our approach.
Measurement of CP violation in Bs --> J/psi phi decay
Creators: name: Kreps, Michal
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: We briefly discuss measurements of CP violation in Bs --> J/psi phi decay. Both the phenomenology of Bs mixing and the importance of the measurement to searches for new physics, as well as technical details and issues with the analysis are included. While current results are consistent with the standard model, even large contributions from new physics cannot be excluded.
description: Preprint of an brief review for Mod. Phys. Lett. A
Das Dokumentationsverhalten von Pflegekräften in deutschen Kliniken in Abhängigkeit vom Dokumentationsmedium
Creators: name: Bartholomäus, Christiane
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2019
Subjects: subject: 610

description: In deutschen Kliniken werden Pflegehandlungen entweder papierbasiert oder über elektronische Systeme dokumentiert. Für die elektronische Dokumentation stehen verschiedene Medien der Datenerfassung zur Verfügung. Dazu zählen nicht-mobile Stationsarbeitsplätze, Laptops und mobile Smartphones. In der vorliegenden Dissertation soll evaluiert werden, welche Auswirkungen das verwendete Dokumentationsmedium auf den Ort und die Dauer der Dokumentation sowie auf die Aktivitätsmuster der Pflegekräfte hat. Hierfür wurde die Methode der Beobachtung der Pflegekräfte mit den unterschiedlichen Dokumentationsmedien gewählt. Anschließend wurde eine Befragung von Pflegekräften an neun zufällig ausgewählten Kliniken zu ihrem Dokumentationsverhalten, ihrem Dokumentationssystem und zu ihrer Einstellung gegenüber dem verwendeten Dokumentationsmedium durchgeführt. Es hat sich gezeigt, dass die Arbeitsmuster der Pflegekräfte nicht zwingend von dem verwendeten Dokumentationssystem abhängen. Die Einführung eines elektronischen Systems allein bedeutet nicht automatisch, dass sich die Arbeitsabläufe verändern oder verbessern. Die Qualität der Patientenversorgung darf sich durch ein Dokumentationsmedium nicht verschlechtern.
description: In German hospitals, nursing activities are documented either paper-based or via electronic systems. For electronic documentation, various data collection media are available. These include non-mobile workstations, laptops and mobile smartphones. This dissertation aims to evaluate the effects of the documentation medium used on the location and duration of the documentation as well as on the nursing activity patterns. For this purpose, the chosen method is the monitoring of nurses while using the different documentation media. Subsequently, a survey of nurses at nine randomly selected clinics was conducted on their documentation behavior, their documentation system and their attitude towards the used documentation medium. It has been shown that the working patterns of the nursing staff do not necessarily depend on the used documentation system. The introduction of an electronic system alone does not automatically result in changed or improved work process. The quality of patient care should not be impaired by a documentation medium.
Anisotropic spin relaxation revealed by resonant spin amplification in (110) GaAs quantum wells
Creators: name: Griesbeck, M.
name: Glazov, M. M.
name: Sherman, E. Ya.
name: Schuh, D.
name: Wegscheider, W.
name: Schüller, C.
name: Korn, T.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have studied spin dephasing in a high-mobility two-dimensional electron system (2DES), confined in a GaAs/AlGaAs quantum well grown in the [110] direction, using the resonant spin amplification (RSA) technique. From the characteristic shape of the RSA spectra, we are able to extract the spin dephasing times (SDT) for electron spins aligned along the growth direction or within the sample plane, as well as the $g$ factor. We observe a strong anisotropy in the spin dephasing times. While the in-plane SDT remains almost constant as the temperature is varied between 4 K and 50 K, the out-of-plane SDT shows a dramatic increase at a temperature of about 25 K and reaches values of about 100 ns. The SDTs at 4 K can be further increased by additional, weak above-barrier illumination. The origin of this unexpected behavior is discussed, the SDT enhancement is attributed to the redistribution of charge carriers between the electron gas and remote donors.
description: 6 pages, 3 figures
EPR spectroscopic characterization of solution dynamics of albumins and albumin-inspired, self-organizing compounds
Creators: name: Reichenwallner, Jörg
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2018
Subjects: subject: Albumine
subject: Elektronenspinresonanzspektroskopie
subject: 540

description: Das Thema dieser Dissertation umfasst die Ausarbeitung einer ESR-spektroskopischen Forschungs-plattform, welche die komplexe Lösungsstruktur und Lösungsdynamik von Albuminen zu beschreiben vermag. Dafür können ESR-aktive Fettsäuren verwendet werden, die als geeignete Liganden für amphiphile makromolekulare Substrate strukturelle und dynamische Informationen liefern. Hauptaugenmerk dieser Arbeit ist es verschiedene physikochemische Effekte zielgerichtet zu untersuchen und zu rationalisieren. Dabei finden analytische Prinzipien aus unterschiedlichen Disziplinen Anwendung die der Quantifizierung von ESR-basierten Phänomenen dienen. Darüber hinaus werden Untersuchungen an amphiphilen Modellpolymeren und pharmakologisch relevanten Albuminkonstrukten herangezogen, um tiefere Einblicke in Rezeptor-Liganden Wechselwirkungen zu erhalten. Es wird mittels ESR Spektroskopie gezeigt, dass konkrete energetische Aspekte der Ligandenbindung Perspektiven eröffnen so komplexe thermodynamische Phänomene, wie Stabilität, Plastizität und Bindungskooperativität bei Albuminen, in soliden funktionellen Modellen darzustellen.
description: This thesis comprises the development of an EPR-spectroscopic research platform that is capable to describe the complex solution structure and solution dynamics of albumins. To achieve that, EPR-active fatty acids can be employed as ligands for amphiphilic macromolecular substrates that provide structural and dynamic information. Special attention in this work is directed towards the targeted exploration and rationalization of different physicochemical effects. Thereby, analytic principles are applied from various disciplines that serve to quantify EPR-based phenomena. Moreover, investigations on amphiphilic model polymers and pharmacologically relevant albumin constructs are utilized to achieve deeper insights about receptor-ligand interactions. It is shown with EPR spectroscopy that tangible energetic aspects from ligand-binding may open up perspectives for representing complex thermodynamic phenomena from albumins, as stability, plasticity and ligand binding cooperativity, in solid functional models.
Counterterms, critical gravity and holography
Creators: name: Sen, Kallol
name: Sinha, Aninda
name: Suryanarayana, Nemani V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: We consider counterterms for odd dimensional holographic CFTs. These counterterms are derived by demanding cut-off independence of the CFT partition function on $S^d$ and $S^1 \times S^{d-1}$. The same choice of counterterms leads to a cut-off independent Schwarzschild black hole entropy. When treated as independent actions, these counterterm actions resemble critical theories of gravity, i.e., higher curvature gravity theories where the additional massive spin-2 modes become massless. Equivalently, in the context of AdS/CFT, these are theories where at least one of the central charges associated with the trace anomaly vanishes. Connections between these theories and logarithmic CFTs are discussed. For a specific choice of parameters, the theories arising from counterterms are non-dynamical and resemble a DBI generalization of gravity. For even dimensional CFTs, analogous counterterms cancel log-independent cut-off dependence.
description: 28 pages, v2: references added, v3: minor changes, version to appear in PRD
Traffic Analysis Against Low-Latency Anonymity Networks Using Available Bandwidth Estimation
Creators: name: Chakravarty, Sambuddho
name: Stavrou, Angelos
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2010
Subjects: Computer science

description: We introduce a novel remotely-mounted attack that can expose the network identity of an anonymous client, hidden service, and anonymizing proxies. To achieve this, we employ single-end controlled available bandwidth estimation tools and a colluding network entity that can modulate the traffic destined for the victim. To expose the circuit including the source, we inject a number of short or one large burst of traffic. Although timing attacks have been successful against anonymity networks, they require either a Global Adversary or the compromise of substantial number of anonymity nodes. Our technique does not require compromise of, or collaboration with, any such entity.  To validate our attack, we performed a series of experiments using different network conditions and locations for the adversaries on both controlled and real-world Tor circuits. Our results demonstrate that our attack is successful in controlled environments. In real-world scenarios, even an under-provisioned adversary with only a few network vantage points can, under certain conditions, successfully identify the IP address of both Tor users and Hidden Servers. However, Tor's inherent circuit scheduling results in limited quality of service for its users. This at times leads to increased false negatives and it can degrade the performance of our circuit detection. We believe that as high speed anonymity networks become readily available, a well-provisioned adversary, with a partial or inferred network "map" , will be able to partially or fully expose anonymous users.
Late time anisotropy as an imprint of cosmological backreaction
Creators: name: Marozzi, Giovanni
name: Uzan, Jean-Philippe
Publisher: name: arXiv
Year: 2012
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Backreaction effects of the large scale structure on the background dynamics have been claimed to lead to a renormalization of the background dynamics that may account for the late time acceleration of the cosmic expansion. This article emphasizes that generically the averaged flow is locally anisotropic, a property that can be related to observation. Focusing on perturbation theory, the spatially averaged shear, that characterizes the anisotropy of the flow, is computed. It is shown that this shear arising from backreaction differs from a homogeneous shear: its time evolution is different and its amplitude is completely determined by the cosmological parameters and the matter power spectrum. It ranges within (2-37)% at a redshift of order 0.5 so that the isotropy of the Hubble flow may allow to constrain the backreaction approach to dark energy.
description: 14 pages, 7 figures. Typos corrected. Article published in Phys. Rev. D 86, 063528 (2012)
Thermal versus Quantum Fluctuations of Optical Lattice Fermions
Creators: name: Campo, V. L.
name: Capelle, K.
name: Hooley, C.
name: Quintanilla, J.
name: Scarola, V. W.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Quantum Gases (cond-mat.quant-gas)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We show that, for fermionic atoms in a one-dimensional optical lattice, the fraction of atoms in doubly occupied sites is a highly non-monotonic function of temperature. We demonstrate that this property persists even in the presence of realistic harmonic confinement, and that it leads to a suppression of entropy at intermediate temperatures that offers a route to adiabatic cooling. Our interpretation of the suppression is that such intermediate temperatures are simultaneously too high for quantum coherence and too low for significant thermal excitation of double occupancy thus offering a clear indicator of the onset of quantum fluctuations.
description: typos corrected; figures improved; some additional discussions
Identifying Proxy Nodes in a Tor Anonymization Circuit
Creators: name: Chakravarty, Sambuddho
name: Stavrou, Angelos
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2008
Subjects: Computer science

description: We present a novel, practical, and effective mechanism that exposes the identity of Tor relays participating in a given circuit. Such an attack can be used by malicious or compromised nodes to identify the rest of the circuit, or as the first step in a follow-on trace-back attack. Our intuition is that by modulating the bandwidth of an anonymous connection (e.g. when the destination server, its router, or an entry point is under our control), we create observable fluctuations that propagate through the Tor network and the Internet to the end-user's host. To that end, we employ LinkWidth, a novel bandwidth-estimation technique. LinkWidth enables network edge-attached entities to estimate the available bandwidth in an arbitrary Internet link without a cooperating peer host, router, or ISP. Our approach also does not require compromise of any Tor nodes. In a series of experiments against the Tor network, we show that we can accurately identify the network location of most participating Tor relays.
Accelerating Application-Level Security Protocols
Creators: name: Burnside, Matthew Spindel
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2003
Subjects: Computer science

description: We present a minimal extension to the BSD socket layer that can improve the performance of application-level security protocols, such as SSH or SSL/TLS, by 10%, when hardware cryptographic accelerators are available in the system. Applications specify what cryptographic transforms must be applied to incoming and outgoing data frames, and such processing is applied by the operating system itself (exploiting hardware accelerators) when the application sends or receives data. Under this scheme, we can reduce the number of system calls and context switches by 50%, and the amount of data copying by 66%. We describe our prototype implementation for the openBSD system and quantify its performance implications. We conclude with a discussion of further possible performance improvements that our approach enables.
Path-based Access Control for Enterprise Networks
Creators: name: Burnside, Matthew Spindel
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2008
Subjects: Computer science

description: Enterprise networks are ubiquitious and increasingly complex. The mechanisms for defining security policies in these networks have not kept up with the advancements in networking technology. In most cases, system administrators define policies on a per-application basis, and subsequently, these policies do not interact. For example, there is no mechanism that allows a web server to communicate decisions based on its ruleset to a firewall in front of it, even though decisions being made at the web server may be relevant to decisions at the firewall. In this paper, we describe a path-based access control system for service-oriented architecture (SOA)-style networks which allows services to pass access-control-related information to neighboring services, as the services process requests from outsiders and from each other. Path-based access control defends networks against a class of attacks wherein individual services make correct access control decisions but the resulting global network behavior is incorrect. We demonstrate the system in two forms, using graph-based policies and by leveraging the KeyNote trust management system.
Detecting Traffic Snooping in Tor Using Decoys
Creators: name: Chakravarty, Sambuddho
name: Portokalidis, Georgios
name: Polychronakis, Michalis
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2011
Subjects: Computer science

description: Anonymous communication networks like Tor partially protect the confidentiality of their users' traffic by encrypting all intra-overlay communication. However, when the relayed traffic reaches the boundaries of the overlay network towards its actual destination, the original user traffic is inevitably exposed. At this point, unless end-to-end encryption is used, sensitive user data can be snooped by a malicious or compromised exit node, or by any other rogue network entity on the path towards the actual destination. We explore the use of decoy traffic for the detection of traffic interception on anonymous proxying systems. Our approach is based on the injection of traffic that exposes bait credentials for decoy services that require user authentication. Our aim is to entice prospective eavesdroppers to access decoy accounts on servers under our control using the intercepted credentials. We have deployed our prototype implementation in the Tor network using decoy IMAP and SMTP servers. During the course of ten months, our system detected ten cases of traffic interception that involved ten different Tor exit nodes. We provide a detailed analysis of the detected incidents, discuss potential improvements to our system, and outline how our approach can be extended for the detection of HTTP session hijacking attacks.
Supplementary video 1 from Pathogen-induced alterations in fine-scale movement behaviour predict impaired reproductive success
Creators: name: Grabow, Marius
name: Landgraf, Conny
name: Niedballa, Juergen
name: Scholz, Carolin
name: Pufelski, Jan
name: Nathan, Ran
name: Toledo, Sivan
name: Jeltsch, Florian
name: Blaum, Niels
name: Radchuk, Viktoriia
name: Tiedemann, Ralph
name: Kramer-Schadt, Stephanie
Publisher: name: The Royal Society
Year: 2025
Subjects: classificationCode: 310399
subject: Ecology not elsewhere classified

description: Overview of fine-scale movement behaviour of starlings in the main colony collected within the first 22 hours (i.e. 10,000 observations per individual). Due to the large amount of collected movement data, localisations were subsampled and truncated and are shown solely for illustrative purposes.
Using enrichment planting to test for environmental filtering and niche differentiation in grassland communities
Creators: name: Breitschwerdt, Eva
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2019
Subjects: subject: Grünland
subject: Vielfalt
subject: Ökologische Nische
subject: Pflanzen
subject: Art
subject: 577

description: Diese Doktorarbeit stellt ein Artenanreicherungsexperiment vor, dass auf 54 Grünländern mit unterschiedlichen Landnutzungsintensitäten in den Biodiversitäts-Exploratorien in den drei deutschen Gebieten Schwäbischen Alb, Hainich und Schorfheide durchgeführt wurde. Junge Individuen von 130 unterschiedlichen Pflanzenarten wurden im Gewächshaus angezogen und anschließend in die Grünländer und parallel in Beete des Botanischen Gartens der Martin-Luther Universität Halle-Wittenberg verpflanzt. Das Wachstum und Überleben der Pflanzenindividuen diente dazu die Mechanismen hinter der Bildung von Pflanzengemeinschaften und den Einfluss von Umweltfiltern und Nischendifferenzierung zu untersuchen. Die Haupterkenntnis dieser Arbeit ist, dass Ähnlichkeiten in funktionellen Merkmalen zu den Arten einer Pflanzengemeinschaft, die schon im Gebiet vorkommen, allgemein vorteilhafter auf den Etablierungserfolg der Individuen waren als Unähnlichkeiten. Dies impliziert einen höheren Einfluss von Umweltfiltern im Vergleich zu Nischen Differenzierung in den untersuchten Grünlandgesellschaften.
description: This doctoral thesis presents an enrichment planting experiment that was conducted on 54 grassland sites with varying land-use intensity within the network of the Biodiversity Exploratories including the three regions Schwäbische Alb, Hainich and Schorfheide in Germany. Young individuals of 130 vascular plant species were raised in the greenhouse and planted into the grasslands and also into gardening beds of the Botanical Garden of the Martin Luther University of Halle-Wittenberg. Growth and survival of the plant individuals were used to investigate the mechanisms behind the assembly of plant communities and the influence of environmental filtering and niche differentiation. The main finding of the thesis is that similarity in plant functional traits to the resident communities was in general more beneficial for the establishment successful of the individuals than dissimilarity. This implies a higher impact of environmental filtering compared to niche differentiation in the investigated grassland communities.
An unconventional role for the septate junctions and Gliotactin in cell division
Creators: name: Charish, Kristi
Publisher: name: University of British Columbia
Year: 2011

description: The focus of this thesis is to investigate the integration of cell division with the septate junction domain in the Drosophila imaginal wing disc epithelium. Columnar epithelia of the imaginal wing disc exhibit complex architecture due to an elaborate series of junctions that are found throughout the membrane. During cell division, these junctions are maintained while new junctions are established; however, their role and influence during mitosis is unclear. This thesis shows that the septate junctions are essential for cytokinesis and Gliotactin at the tricellular junctions is necessary to localize cell division to the septate junction domain, and illustrates a unique role for Gliotactin and the septate junctions outside their classic role of maintaining a permeability barrier. The septate junctions are basolaterally localized transmembrane junctions required in epithelial cells to form a permeability barrier. Although the septate junctions are formed by a large protein complex, this thesis only investigates the three core SJ proteins, NeurexinIV (NrxIV), Coracle (Cor), and Neuroglian (Nrg). Gliotactin (Gli), a Drosophila Neuroligin homologue, is a septate junction associated protein concentrated at the tricellular junction (TCJ), which is necessary to maintain the septate junction permeability barrier. Loss of any of the septate junction proteins, or Gliotactin, leads to structural disruption of the septate junctions and loss of the permeability barrier in a wide range of epithelial derived tissues. Chapter two examines the process of cell division in epithelial cells of the wing imaginal disc with respect to the septate junctions and tricellular junction. Chapter three looks at the role of Gliotactin in maintaining the plane of cell division within the septate junction domain, and chapter four shows that the septate junctions are necessary for ingression furrow stability and the association of the contractile ring with the membrane during late cytokinesis. This work demonstrates a novel role for the septate and tricellular junctions during mitosis in Drosophila, which has implications for the role of tight junctions in vertebrate cells.
Flexible Pointer Analysis Using Assign-Fetch Graphs
Creators: name: Buss, Marcio
name: Edwards, Stephen A.
name: Brand, Daniel
name: Sreedhar, Vugranam
Publisher: name: Columbia University
Year: 2008
Subjects: subject: Computer science
subject: Mathematics
subject: FOS: Mathematics

description: We propose a new abstraction for pointer analysis that represents reads and writes to memory instead of traditional points-to relations. Compared to points-to graphs, our Assign-Fetch Graph (AFG) leads to concise procedure summaries that can be used in any calling context. Also, its flexibility supports new analysis techniques with different trade-offs between speed and precision. For efficiency, we build a summary for each procedure that assumes distinct pointers from the environment are not aliased and restore soundness when the summary is used in a context with aliases. We present two pointer analysis techniques based on our AFG. The first takes the flow-insensitive view adopted by many authors; the second considers statement ordering. In addition to being more precise, we find that this "flow-aware" analysis runs faster. We conclude with experimental results showing it is practical.
Pointer Analysis for Source-to-Source Transformations
Creators: name: Buss, Marcio
name: Edwards, Stephen A.
name: Yao, Bin
name: Waddington, Daniel
Publisher: name: Columbia University
Year: 2005
Subjects: Computer science

description: We present a pointer analysis algorithm designed for source-to-source transformations. Existing techniques for pointer analysis apply a collection of inference rules to a dismantled intermediate form of the source program, making them difficult to apply to source-to-source tools that generally work on abstract syntax trees to preserve details of the source program. Our pointer analysis algorithm operates directly on the abstract syntax tree of a C program and uses a form of standard dataflow analysis to compute the desired points-to information. We have implemented our algorithm in a source-to-source translation framework and experimental results show that it is practical on real-world examples.
Enzymatic synthesis and characterization of grafted polyesters and their use as steric stabilizers for cubosomes
Creators: name: Bilal, Muhammad Humayun
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2019
Subjects: subject: Polyester
subject: Chemische Synthese
subject: Stabilisator
subject: Nanopartikel
subject: 540

description: In der vorliegenden Arbeit wurden biologisch abbaubare Polyester durch enzymatische Synthese hergestellt und durch Pfropfung mit gesättigten und ungesättigten Fettsäuren modifiziert. Die synthetisierten Polymere wurden umfassend charakterisiert und ihre Selbstorganisation in wässrigen Lösungen untersucht. Des Weiteren wurden die mit ungesättigten Fettsäuren modifizierten Polyester durch weitere Pfropfung mit Polyethylenglycol (PEG) wasserlöslich gemacht und hinsichtlich ihrer sterischen stabilisierenden Eigenschaften für kubisch flüssigkristalline Nanopartikel (Cubosomen) in Mischungen mit Glycerolmonooleat untersucht.
description: In this work, enzymatic synthesis of biodegradable polyesters followed by their grafting with saturated and unsaturated fatty acid has been undertaken. Polymer synthesis has been thoroughly investigated through comprehensive characterization as well as their self-assembled behaviour in aqueous media. Furthermore, unsaturated fatty acid grafted polyesters were additionally grafted by poly(ethylene glycol) (PEG) in order to make them water soluble. These muligraft polymers were afterwards studied as steric stabilizers for cubic liquid crystalline nanoparticles (cubosomes) of glycerol monooleate.
The new literacies of Web 2.0 : a case study of one school district
Creators: name: Moayeri, Maryam
Publisher: name: University of British Columbia
Year: 2011

description: While we know that youth are increasingly using the Internet for school purposes like gathering information for assignments, research is just beginning to identify the actual Internet processes and practices of adolescents when learning. This study joins the theoretical conversation surrounding New Literacies Theory by combining the perspectives that Web 2.0 is a new literacy, that the new knowledge economy requires youth to be literate in new ways, and that Web 2.0 is a democratic medium. This is a case study using the mixed methods of interviewing, participant observation, and surveys. The goal of the case study school district was to implement digital literacies in its schools. The principal at the focal school had adopted this goal and was encouraging teachers to implement Web 2.0 tools. Survey findings showed that the majority of teachers were not using Web 2.0 tools in their practice. However, the practices of three teachers who were using Web 2.0 tools were investigated. Findings showed that these teachers used Web 2.0 tools in both new literacy ways and traditional ways that simply took a former practice and technologized it. Findings further showed that the students were not frequently using the Internet in ways that engendered practices associated with new literacies. This was partly attributed to the fact that teachers were not using these literacies in schools. Descriptive statistics and t-tests showed statistically significant differences between many of students’ self- and school-selected practices. Most of the tools were used more frequently for self-selected reasons, whereas only wikis were used more often for school-selected practices for both accessing and contributing to information. Also, students accessed the web for information more often than they contributed to it. This practice matched that of their teachers. The focus group interview showed that students’ self-selected Internet practices were more participatory and social whereas their school-selected practices were more passive. This study extends the developing New Literacies Theory by proposing that no one form of literacy supersedes or holds more value than another. It also suggests that we take care not to devalue existing forms of literacy when we begin to integrate new forms.
F3ildCrypt: End-to-End Protection of Sensitive Information in Web Services
Creators: name: Burnside, Matthew Spindel
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2009
Subjects: Computer science

description: The frequency and severity of a number of recent intrusions involving data theft and leakages has shown that online users' trust, voluntary or not, in the ability of third parties to protect their sensitive data is often unfounded. Data may be exposed anywhere along a corporation's web pipeline, from the outward-facing web servers to the back-end databases. The problem is exacerbated in service-oriented architectures (SOAs) where data may also be exposed as they transit between SOAs. For example, credit card numbers may be leaked during transmission to or handling by transaction-clearing intermediaries. We present F3ildCrypt, a system that provides end-to-end protection of data across a web pipeline and between SOAs. Sensitive data are protected from their origin (the user's browser) to their legitimate final destination. To that end, F3ildCrypt exploits browser scripting to enable application- and merchant-aware handling of sensitive data. Such techniques have traditionally been considered a security risk; to our knowledge, this is one of the first uses of web scripting that enhances overall security.Our approach scales well in the number of public key operations required for web clients and does not reveal proprietary details of the logical enterprise network. We evaluate F3ildCrypt and show an additional cost of 40 to 150 ms when making sensitive transactions from the web browser, and a processing rate of 100 to 140 protected fields/second on the server. We believe such costs to be a reasonable tradeoff for increased sensitive-data confidentiality.
Mass spectrometric methods for measuring dynamic processes, drug-induced effects and target engagement on the cell surface glycoproteome
Creators: name: Kalxdorf, Mathias
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2018
Subjects: subject: 500 Naturwissenschaften und Mathematik 570 Biowissenschaften; Biologie 572 Biochemie

description: Das Plasmamembranproteom ist hochdynamisch und spielt eine entscheidende Rolle in vielen biologischen Prozessen, wodurch dieses Subproteom ein prominentes Ziel für pharmazeutische Eingriffe ist. Darüber hinaus gibt es immer mehr Hinweise auf aktive Mechanismen für die Ein- und Ausschleusung von Wirkstoffen durch membrangebundene Transporter. Daher kann die Expression dieser Proteine die Wirkung von Wirkstoffen beeinflussen und zu Arzneimittelresistenz führen. Ein detailliertes Verständnis der Zusammensetzung des Oberflachenproteoms und dessen Dynamik kann somit einen großen Einfluss auf die Arzneimittelforschung haben. Die Analyse von Zelloberflächenproteinen ist jedoch aufgrund ihrer biochemischen Eigenschaften und ihrer geringen Mengen eine Herausforderung. In dieser Arbeit wurde ein sensitives und selektives Protokoll für die umfassende Identifizierung und Quantifizierung von Zelloberflächenproteinen mittels Massenspektrometrie etabliert. Weiterhin wurde dieses Protokoll mit dem kürzlich beschriebenen Thermal Proteome Profiling (Savitski 2014) kombiniert, um Wirkstoffbindungen an Membranproteinen auf lebenden Zellen zu analysieren.
description: The plasma membrane proteome is highly dynamic and has crucial roles in many biological processes rendering this subproteome a prominent target for pharmaceutical intervention. Furthermore, there is growing evidence for active drug in- and efflux mechanisms by membrane-bound transporters. Thus, expression of these proteins affects drug-target engagement and can lead to drug resistance. A detailed understanding of the plasma membrane proteome composition and its dynamics can have a significant impact on drug discovery. However, analysis of the cell surface proteome is challenging due to its biochemical properties and low abundance. Here, a sensitive and selective enrichment protocol was established for the comprehensive identification and quantification of cell surface accessible proteins by mass spectrometry. In addition, we combined the recently described thermal proteome profiling (Savitski 2014) enabling target identification and determination of target engagement with our protocol to specifically monitor drug binding to cell surface presented membrane proteins on live cells.
Sag Harbor First Presbyterian Church Vital Records, 1791-1914
Creators: name: (:Unas)
Publisher: name: Sag Harbor First Presbyterian Church
Year: 1791
Subjects: Recording & registration
Church records
Organizations
Churches
Presbyterian churches
Sag Harbor
Baptisms
Marriages
Funerals

description: This church register records Ministers, Elders, Deacons, Communicants, Baptisms, Marriages, and Deaths between 1797-1912.
Asynchronous Policy Evaluation and Enforcement
Creators: name: Burnside, Matthew Spindel
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2008
Subjects: Computer science

description: Evaluating and enforcing policies in large-scale networks is one of the most challenging and significant problems facing the network security community today. Current solutions are limited by an out-of-date allow/deny paradigm, and policies are evaluated synchronously and independently at each service. This makes it difficult to detect or defend against multi-stage attacks, or attacks which begin as innocent requests and then later exhibit malicious behavior in the same context. In this paper we describe Arachne, a prototype for asynchronous policy evaluation. We evaluate the system by testing it against pre-recorded traffic containing known and unknown attacks and show that it is capable of processing events at more than 10x the required rate for a deployed, heavily-used network.
Low Latency Anonymity with Mix Rings
Creators: name: Burnside, Matthew Spindel
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2006
Subjects: Computer science

description: We introduce mix rings, a novel peer-to-peer mixnet architecture for anonymity that yields low-latency networking compared to existing mixnet architectures. A mix ring is a cycle of continuous-time mixes that uses carefully coordinated cover traffic and a simple fan-out mechanism to protect the initiator from timing analysis attacks. Key features of the mix ring architecture include decoupling path creation from data transfer, and a mechanism to vary the cover traffic rate over time to prevent bandwidth overuse. We analyze the architecture with respect to other peer-to-peer anonymity systems -- onion routing and batching mixnets -- and we use simulation to demonstrate performance advantages of nearly 40% over batching mixnets while protecting against a wider variety of adversaries than onion routing.
Authentication on Untrusted Remote Hosts with Public-key Sudo
Creators: name: Burnside, Matthew Spindel
name: Lu, Mack
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2008
Subjects: Computer science

description: Two common tools in Linux- and UNIX-based environments are SSH for secure communications and sudo for performing administrative tasks. These are independent programs with substantially different purposes, but they are often used in conjunction. In this paper, we describe a weakness in their interaction and present our solution, public-key sudo. Public-key sudo1 is an extension to the sudo authentication mechanism which allows for public key authentication using the SSH public key framework. We describe our implementation of a BSD SSH authentication module and the SSH modifications required to use this module.
Arachne: Integrated Enterprise Security Management
Creators: name: Burnside, Matthew Spindel
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2007
Subjects: Computer science

description: Security policies are a key component in protecting enterprise networks. There are many defensive options available to these policies, but current mechanically-enforced security policies are limited to traditional admission-based access control. There are defensive capabilities available that include logging, firewalls, honeypots, rollback/recovery, and intrusion detection systems, but policy enforcement is essentially limited to allow/deny semantics. Furthermore, access-control mechanisms operate independently on each service, which often leads to inconsistent or incorrect application of the intended system-wide policy. To begin to solve these problems, we propose a new system for defense-in-depth using global security policies. Under a global security policy, every policy decision is made with near-global knowledge, and re-evaluated as global knowledge changes, given an initial configuration provided by the administrator. Using a variety of actuators, we make the full array of defensive capabilities available to the global policy. We outline our proposal for enterprise-wide security policies, explore the design space, and discuss Arachne, our prototype implementation.
Triplatyx quadraticeps Horvath 1904
Creators: name: Kment, P.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Pentatomidae
Triplatyx
Triplatyx quadraticeps

description: Triplatyx quadraticeps Horváth, 1904
(Figs. 3 d-f)
M a t e r i a l e x a m i n e d: MADAGASCAR (bor. or.): 1 km NW of Mananara, Aye-Aye Island, 5.-7.ix.2003, 1 ♀, P. Banar lgt., P. Kment det. (MMBC). Maroantsetra env., Fampanambo, 1962, 1 ♂ 2 ♀♀, J. Vadon lgt., H. Schouteden det., P. Kment revid. (MRAC).
description: Published as part of Kment, P., 2011, Triplatyx ribesi sp. nov., a new species of Pentatomidae (Hemiptera: Heteroptera) from Madagascar, pp. 279-286 in Heteropterus Revista de Entomología 11 on page 286
The accompanying of ribs fractures with intra-abdominal organs injuries in Blunt Abdominal Trauma
Creators: name: Dogjani, Agron
Publisher: name: Zenodo
Year: 2005
Subjects: Rib Fracture, Chest Trauma, Abdominal, Blunt, Injury Organ

description: Civilian trauma is one of the major causes of death all over the world and is on the rise. One of the commonest things that introduce our presentation on trauma refers to industrialization and a constant increase in vehicular accidents. Blunt abdominal trauma forms a very important segment of the whole gamut of injuries. Surgery still remains the best treatment option for most patients with blunt abdominal trauma. However, technological advances in diagnostic procedures have led today’s trauma surgeons to implement conservative management in significant numbers. The aim; to evidence of the causes of the Blunt abdominal trauma. The confirmation of incidences to the closed abdominal trauma depending on age, gender, etc. The indication of correlation in between the ribs fractures and intra-abdominal organs damages too. Material and method; The study has a retrospective character and it has been realized within a period of time June 2004 till April 2005. This study consists of 54 cases of all patients admitting and treating in the National Trauma Center which belongs to University Central Military Hospital. The population specimen has been chosen by chance having no studying limitation. The Analysis of data; The dates have been presented in absolute value and percentage too. In order to see links between two variables, the correlation Kendal's Taub coefficient was used. In order to analyze the linking of the dependent variable to the other ones being undependable, a regression linear method has been also used. The data have been presented using tables and different types of graphics. It has been significantly considered the values of p<_0.05 or 5%. For data analyzing a statistical packet, SPSS 10.0 and Microsoft Excel were used. The damages of the thorax are classified as following…. Results: Our study includes 54 patients; the distribution of gender-based was: 12 (22%) females and 42 (78%) males. The distribution based on age: 7(13 %); for <14 years old group; 21 (39%); for 14-40 years old; 26 (48%).for >40 years old... Conclusions: In Blunt Chest trauma, the incidence of intraabdominal organ injuries is high as evidenced by our study. All patients with such injuries should be evaluated and evaluated until the possibility of such intra-abdominal damage is ruled out. Also, intraabdominal injuries in multiple rib fractures patients with more than 6 fractures show high gravity, full inspection and observation must be achieved to prepare for possible emergency surgery or other treatment options.
SQLrand: Preventing SQL Injection Attacks
Creators: name: Boyd, Stephen W.
name: Keromytis, Angelos D.
Publisher: name: Columbia University
Year: 2004
Subjects: Computer science

description: We present a practical protection mechanism against SQL injection attacks. Such attacks target databases that are accessible through a web front-end, and take advantage of flaws in the input validation logic of Web components such as CGI scripts. We apply the concept of instruction-set randomization to SQL, creating instances of the language that are unpredictable to the attacker. Queries injected by the attacker will be caught and terminated by the database parser. We show how to use this technique with the MySQL database using an intermediary proxy that translates the random SQL to its standard language. Our mechanism imposes negligible performance overhead to query processing and can be easily retrofitted to existing systems.
Saints or Communists? Educating Orthodox Christian Youth for Love of the Neighbor
Creators: name: Bezzerides, Ann
Publisher: name: Columbia University
Year: 2010
Subjects: Religious education

description: For the Christian religious education of Orthodox youth, specifically high school and college students, there is a growing focus on love of and service to the needy neighbor. This focus is long in coming: the Orthodox churches in the United States have generally not been known for their social outreach to those outside their own ethnicity and a good place to change this is through educating our youth. This focus is also much needed among a population of youth in America who have been called “Generation Me” and who might not naturally look outward in their spiritual pilgrimage.