cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A Behavior-Based Approach To Securing Email Systems
Creators: name: Stolfo, Salvatore
name: Hershkop, Shlomo
name: Wang, Ke
name: Nimeskern, Olivier
name: Hu, Chia-Wei
Publisher: name: Columbia University
Year: 2003
Subjects: Computer science

description: The Malicious Email Tracking (MET) system, reported in a prior publication, is a behavior-based security system for email services. The Email Mining Toolkit (EMT) presented in this paper is an offline email archive data mining analysis system that is designed to assist computing models of malicious email behavior for deployment in an online MET system. EMT includes a variety of behavior models for email attachments, user accounts and groups of accounts. Each model computed is used to detect anomalous and errant email behaviors. We report on the set of features implemented in the current version of EMT, and describe tests of the system and our plans for extensions to the set of models.
Metallicity of M dwarfs II. A comparative study of photometric metallicity scales
Creators: name: Neves, V.
name: Bonfils, X.
name: Santos, N. C.
name: Delfosse, X.
name: Forveille, T.
name: Allard, F.
name: Natário, C.
name: Fernandes, C. S.
name: Udry, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Stellar parameters are not easily derived from M dwarf spectra, which are dominated by complex bands of diatomic and triatomic molecules and not well described at the line by line level by atmospheric models. M dwarf metallicities are therefore most commonly derived through less direct techniques. Several recent publications propose calibrations that provide the metallicity of an M dwarf from its Ks band absolute magnitude and its V-Ks color, but disagree at the \pm0.1 dex level. We compare these calibrations on a sample of 23 M dwarfs, which we select as wide (> 5 arcsec) companions of F-, G- or K- dwarfs with metallicities measured on a homogeneous scale, and which we require to have V band photometry measured to better than \sim0.03 magnitude. We find that the Schlaufman & Laughlin (2010) calibration has lowest offsets and residuals against our sample, and use our improved statistics to marginally refine that calibration. With more strictly selected photometry than in previous studies, the dispersion around the calibration is well in excess of the [Fe/H] and photometric uncertainties. This suggests that the origin of the remaining dispersion is astrophysical rather than observational.
description: paper accepted in A&A, 12 pages, 3 figures; A&A REF: AA/2011/18115
LA TUTELA PENALE DELLA CONCORRENZA NELL�ORDINAMENTO DELL�UNIONE EUROPEA
Creators: name: FERRARI, PATRICK MARCO
Publisher: name: Universit� degli Studi di Milano
Year: 2013

description: This thesis deals with the question as to whether the public and the private enforcements of European competition law, as currently shaped, are able to generate a sufficient and effective deterrence level. Proposals aimed at addressing certain possible gaps and shortages in this respect, in particular the criminalization of cartel conducts, are eventually put forward. More in details, sections I and II carry out a preliminary assessment of the real level of deterrence stemming from public and private enforcement tools with respect to violations of European competition law. Section III poses the question as to whether a possible criminalization of certain anticompetitive conducts in breach of European competition law, in particular cartels, along the line of what already occurred in many jurisdictions over the last decades, might contribute to enhance the current level of deterrence in this context. Section IV analyzes specific legal issues connected to a possible criminalization of cartel conducts in breach of art. 101 TFUE through directive, such as the identification of an appropriate legal basis pursuant to the Treaties of the European Union, the definition of the criminal offence, the penalties that could be provided, the interplay between criminal sanctions and leniency programs, the coordination between competition authorities and criminal judges, and certain further issues.
Controlling open quantum systems using fast transitions
Creators: name: Poggi, P. M.
name: Lombardo, F. C.
name: Wisniacki, D. A.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: Unitary control and decoherence appear to be irreconcilable in quantum mechanics. When a quantum system interacts with an environment, control strategies usually fail due to decoherence. In this letter, we propose a time-optimal unitary control protocol suitable for quantum open systems. The method is based on succesive diabatic and sudden switch transitions in the avoided crossings of the energy spectra of closed systems. We show that the speed of this control protocol meets the fundamental bounds imposed by the quantum speed limit, thus making this scheme ideal for application where decoherence needs to be avoided. We show that our method can achieve complex control strategies with high accuracy in quantum open systems.
description: 5 pages, 4 figures
Realistic calculations of Kbar-N-N, Kbar-N-N-N, and Kbar-Kbar-N-N quasibound states
Creators: name: Barnea, N.
name: Gal, A.
name: Liverts, E. Z.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Nuclear Theory (nucl-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Experiment (nucl-ex)
subject: FOS: Physical sciences

description: Binding energies and widths of three-body KbarNN, and of four-body KbarNNN and KbarKbarNN nuclear quasibound states are calculated in the hyperspherical basis, using realistic NN potentials and subthreshold energy dependent chiral KbarN interactions. Results of previous K^-pp calculations are reproduced and an upper bound is placed on the binding energy of a K^-d quasibound state. A self consistent handling of energy dependence is found to restrain binding, keeping the calculated four-body ground-state binding energies to relatively low values of about 30 MeV. The lightest strangeness -2 particle-stable Kbar nuclear cluster is most probably KbarKbarNN. The calculated Kbar N -> pi Y conversion widths range from approximately 30 MeV for the KbarNNN ground state to approximately 80 MeV for the KbarKbarNN ground state.
description: v3 matching journal publication
Mycomya (Mycomya) egregia
Creators: name: Kolcsár, Levente-Péter
name: Salmela, Jukka
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Mycetophilidae
Mycomya
Mycomya egregia

description: Mycomya (Mycomya) egregia (Dziedzicki, 1885) Material examined. Figure 1. Romania: Anieș, Rodnei Mt., Cepelor spring, spruce forest with fallen trees, 1165 m a.s.l., 47.5380° N, 024.6728° E, 19 August 2014, Kolcsár L.-P. leg., 1 male, DIPT-JS-2016-0180. This species has been reported from Central and northern Europe and Russia (Väisänen 1984, Chandler 2013) and is here reported as a new for the Romanian fauna. Immature stages are unknown.
description: Published as part of Kolcsár, Levente-Péter & Salmela, Jukka, 2017, New taxonomic and faunistic records of fungus gnats (Insecta, Diptera) from Montenegro, Romania, and Serbia, pp. 533-559 in Check List 13 (5) on page 541, DOI: 10.15560/13.5.533
description: {"references": ["Dziedzicki H (1885) Przyczynek do fauny owadow dwuskrzydlych. Rodzaje nowe: Hertwigia, nov. gen., Eyrucera, nov. gen. i gatunki rodzajow Boletina, Sciophila. Pamietnik Fizyjograficzny 5 (3): 164 - 194.", "Vaisanen R (1984) Monograph of the genus Mycomya Rondani in the Holarctic region (Diptera, Mycetophilidae). Acta Zoologica Fennica 177: 1 - 346.", "Chandler PJ (2013) Fauna Europaea: \" Bolitophilidae, Keroplatidae, Mycetophilidae. In: Pape T. and P. Beuk. 2013. Fauna Europaea, Diptera. Fauna Europaea version 2.6. 2. http: // www. faunaeur. org. Accessed: 2016 - 10 - 15."]}
Exact asymptotic behavior of correlation functions for disordered spin-1/2 XXZ chains
Creators: name: Ristivojevic, Zoran
name: Petkovic, Aleksandra
name: Giamarchi, Thierry
Publisher: name: arXiv
Year: 2012
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We consider an XXZ spin-1/2 chain in the presence of several types of disorder that do not break the XY symmetry of the system. We calculate the complete asymptotic form of the spin-correlation functions at zero temperature at the transition between liquid and disordered phase that occurs for a special value of anisotropy in the limit of small disorder. Apart from a universal power law decay of correlations, we find additional logarithmic corrections due to marginally irrelevant operator of disorder.
description: 11 pages
Workplace Wellness Programs and The Interplay Between The ADA’s Prohibition On Disability-Related Inquiries and Insurance Safe Harbor
Creators: name: Che, Erica
Publisher: name: Columbia University
Year: 2017
Subjects: subject: Law
subject: FOS: Law
subject: Employee health promotion
subject: Employer-sponsored health insurance
subject: Self-disclosure--Health aspects
subject: Disclosure of information--Law and legislation

description: The EEOC’s May 2016 final rule on employer wellness programs, along with two recent rulings by courts in Wisconsin, reflects the growing pains of a legal doctrine developing under the Americans with Disabilities Act (“ADA”) regarding the application of the statute’s provisions to wellness program requirements. This Note evaluates how ADA provisions should apply to two common components of workplace wellness programs, health risk assessments and biometric screenings, and the use of incentives by employers to increase employee participation in such programs. In particular, this Note examines the interplay of the ADA’s restrictions on medical examinations and inquiries, its exception for examinations and inquiries that are part of “voluntary” employee health programs, and its insurance “safe harbor” provision. After outlining inconsistencies in the application of the ADA’s provisions in recent “safe harbor” cases, this Note aims to clarify the debate and build on the EEOC’s new regulatory guidance by providing a comprehensive analysis of the ADA’s limits on health screening programs.
Localization effects in the tunnel barriers of phosphorus-doped silicon quantum dots
Creators: name: Ferrus, T.
name: Rossi, A.
name: Lin, W.
name: Williams, D. A.
name: Kodera, T.
name: Oda, S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We have observed a negative differential conductance with singular gate and source-drain bias dependences in a phosphorus-doped silicon quantum dot. Its origin is discussed within the framework of weak localization. By measuring the current-voltage characteristics at different temperatures as well as simulating the tunneling rates dependences on energy, we demonstrate that the presence of shallow energy defects together with an enhancement of localization satisfactory explain our observations. Effects observed in magnetic fields are also discussed.
description: 15 pages
The Role of Social Enterprise and Hybrid Organizations
Creators: name: Eldar, Ofer
Publisher: name: Columbia University
Year: 2017
Subjects: subject: Law
subject: FOS: Law
subject: Industries--Social aspects
subject: Industrial management--Government policy
subject: Investments--Moral and ethical aspects

description: Recent years have brought remarkable growth in hybrid organizations that combine profit-seeking and social missions. Despite popular enthusiasm for such organizations, legal reforms to facilitate their formation and growth— particularly, legal forms for hybrid firms—have largely been ineffective. This shortcoming stems in large part from the lack of a theory that identifies the structural and functional elements that make some types of hybrid organizations more effective than others. In pursuit of such a theory, this Article focuses on a large class of hybrid organizations that has been effective in addressing development problems, such as increasing access to capital and improving employment opportunities. These organizations, which are commonly referred to as “social enterprises,” include microfinance institutions, firms that sell fair trade products, work integration firms, and low-cost sellers of essential goods and services such as eyeglasses, bed nets, and healthcare. The common characteristic of social enterprises is that they have a transactional relationship with their beneficiaries, who are either purchasers of the firms’ goods or services or suppliers of inputs (including labor) to the firm. The essence of this Article’s theory is that through these transactions, social enterprises perform a measurement role; that is, they measure or gather information on their patron-beneficiaries’ abilities to transact with commercial firms (for example, workers’ skills, borrowers’ creditworthiness, and consumers’ ability to pay). That information permits social enterprises to tailor the form and amount of subsidies to the specific needs of individual beneficiaries. This “measurement” function makes social enterprises relatively effective vehicles for allocating subsidies as compared to traditional donative organizations and other forms of hybrid organization, in particular firms that pursue corporate social responsibility policies. Thus, the measurement function can serve as the basis for designing a legal form for social enterprises.
The influence of workplace context on fathers’ use of parental leave in Canada
Creators: name: Stecy-Hildebrandt, Natasha
Publisher: name: University of British Columbia
Year: 2012

description: Much research has examined fathers’ use of parental leave in the international context, focusing on the role of state policies and/or the influence of the family in shaping fathers’ leave decisions. Missing from these analyses is an examination of how the workplace context might shape fathers’ leave use. The current thesis attempts to fill this gap by investigating variation in fathers’ leave use and leave length in Canada as these relate to cultural and structural features of the workplace context. Using data from the nationally representative Survey of Labour and Income Dynamics, I run logistic regression and negative binomial regression to test the effects of occupational culture and structural features such as workplace sector and size on fathers’ use and length of leave, respectively. Results indicate a positive and significant effect for management and science-related occupations on leave use but this effect disappears upon the introduction of individual-level control variables. Other work-related predictors include large workplaces and having a permanent job, both of which positively and significantly predict leave use. Length of leave was not found to be related to workplace context. These findings point to the importance of structural features of the workplace in shaping fathers’ use of leave, but not necessarily the length of their leave.
Type I Superconductivity in YbSb2 Single Crystals
Creators: name: Zhao, Liang L.
name: Lausberg, Stefan
name: Kim, H.
name: Tanatar, M. A.
name: Brando, Manuel
name: Prozorov, R.
name: Morosan, E.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: We present evidence of type I superconductivity in YbSb2 single crystals, from DC and AC magnetization, heat capacity and resistivity measurements. The critical temperature and critical field are determined to be $T_c\approx$ 1.3 K and $H_c\approx$ 55 Oe. A small Ginzburg-Landau parameter κ= 0.05, together with typical magnetization isotherms of type I superconductors, small critical field values, a strong Differential Paramagnetic Effect (DPE) signal, and a field-induced change from second to first order phase transition, confirm the type I nature of the superconductivity in YbSb2. A possible second superconducting state is observed in the radiofrequency (RF) susceptibility measurements, with $T_{c}^{(2)}\approx$ 0.41 K and $H_{c}^{(2)}\approx$ 430 Oe.
description: 6 pages, 10 figures
Mathematical Programming Decoding of Binary Linear Codes: Theory and Algorithms
Creators: name: Helmling, Michael
name: Ruzika, Stefan
name: Tanatmis, Akin
Publisher: name: arXiv
Year: 2011
Subjects: subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences
subject: E.4

description: Mathematical programming is a branch of applied mathematics and has recently been used to derive new decoding approaches, challenging established but often heuristic algorithms based on iterative message passing. Concepts from mathematical programming used in the context of decoding include linear, integer, and nonlinear programming, network flows, notions of duality as well as matroid and polyhedral theory. This survey article reviews and categorizes decoding methods based on mathematical programming approaches for binary linear codes over binary-input memoryless symmetric channels.
description: 17 pages, submitted to the IEEE Transactions on Information Theory. Published July 2012
Anomalous Payload-Based Network Intrusion Detection
Creators: name: Wang, Ke
name: Stolfo, Salvatore
Publisher: name: Columbia University
Year: 2004
Subjects: Computer science

description: We present a payload-based anomaly detector, we call PAYL, for intrusion detection. PAYL models the normal application payload of network traffic in a fully automatic, unsupervised and very efficient fashion. We first compute during a training phase a profile byte frequency distribution and their standard deviation of the application payload flowing to a single host and port. We then use Mahalanobis distance during the detection phase to calculate the similarity of new data against the pre-computed profile. The detector compares this measure against a threshold and generates an alert when the distance of the new input exceeds this threshold. We demonstrate the surprising effectiveness of the method on the 1999 DARPA IDS dataset and a live dataset we collected on the Columbia CS department network. In once case nearly 100% accuracy is achieved with 0.1% false positive rate for port 80 traffic.
title: Progress and future of using CTD loggers in collaborative swept area surveys of Loligogahi in the Falkland Islands: Spatial distribution and biomass estimations
Creators: name: Payá, Ignacio
name: Laptikhovsky, Vlad
name: Arkhipkin, Alexander
Publisher: name: ASC 2009 - Theme session L
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.Collaborative swept area surveys are routinely done to estimate the Loligo biomass just before the start of each fishing seasons. The surveys are done using commercial vessels, which do not have oceanographic equipment to collect oceanographic data. However, during July 2008 and February 2009 surveys data storage tag (DST) that records conductivity, temperature and depth (CTD) was attached to the net. This study shows the difficulties and the use of the oceanographic data collected by DST-CTD in the understanding of Loligo distribution and in its biomass estimation. The data collected were compared with historical records of oceanographic samples routinely taken with a proper CTD along fixed transects. With good precision but limited accuracy the DSTCTD was post-calibrated using a proper CTD. The DST-CTD and the proper CTD were simultaneously deployed in different localities (river, harbour and open coast) that covered a wide range of salinities and temperatures. The geostatistic analysis showed that Loligo spatial distribution, bottom temperature and bottom salinity were correlated. Loligo distribution was restricted by the extension of the upper part of Transient Zone between coastal and Sub-Antarctic waters. The geo-statistic biomass estimation was improved incorporating in the spatial model a Loligo density trend correlated with bottom temperature. The use of DST-CTD in future surveys and in commercial vessels during fishing seasons are discussed, with special emphasis in the understanding of Loligo spatial distribution and inter-annual variability of the immigration timing to the fishing grounds
Using biomarkers to allocate patients in a response-adaptive clinical trial
Creators: name: Jackson, H.
name: Bowen, S.
name: Jaki, T.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: Medicine
Cell Biology
Neuroscience
Mathematical Sciences not elsewhere classified

description: In this paper, we discuss a response adaptive randomization method, and why it should be used in clinical trials for rare diseases compared to a randomized controlled trial with equal fixed randomization. The developed method uses a patient’s biomarkers to alter the allocation probability to each treatment, in order to emphasize the benefit to the trial population. The method starts with an initial burn-in period of a small number of patients, who with equal probability, are allocated to each treatment. We then use a regression method to predict the best outcome of the next patient, using their biomarkers and the information from the previous patients. This estimated best treatment is assigned to the next patient with high probability. A completed clinical trial for the effect of catumaxomab on the survival of cancer patients is used as an example to demonstrate the use of the method and the differences to a controlled trial with equal allocation. Different regression procedures are investigated and compared to a randomized controlled trial, using efficacy and ethical measures.
Mycomya (Mycomya) neohyalinata Vaisanen 1984
Creators: name: Kolcsár, Levente-Péter
name: Salmela, Jukka
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Mycetophilidae
Mycomya
Mycomya neohyalinata

description: Mycomya (Mycomya) neohyalinata Väisänen, 1984 Material examined. Figure 1. Romania: Gura Lalai, Maramureș Mts, Bistrița River, young spruce forest around small springs, 1230 m a.s.l., 47.5548° N, 024.9451° E, 20 August 2014, Kolcsár L.-P. leg., 1 male, DIPT-JS-2015-0303. This is a common and widespread Holarctic species but is new for the Romanian fauna. Larvae of the species are associated with fungal fruiting bodies (Väisänen 1984).
description: Published as part of Kolcsár, Levente-Péter & Salmela, Jukka, 2017, New taxonomic and faunistic records of fungus gnats (Insecta, Diptera) from Montenegro, Romania, and Serbia, pp. 533-559 in Check List 13 (5) on page 541, DOI: 10.15560/13.5.533
description: {"references": ["Vaisanen R (1984) Monograph of the genus Mycomya Rondani in the Holarctic region (Diptera, Mycetophilidae). Acta Zoologica Fennica 177: 1 - 346."]}
Composition and stability of hybrid stars with hyperons and quark color-superconductivity
Creators: name: Bonanno, Luca
name: Sedrakian, Armen
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The recent measurement of a $1.97\pm 0.04$ solar-mass pulsar places a stringent lower bound on the maximum mass of compact stars and therefore challenges the existence of any agents that soften the equation of state of ultra-dense matter. We investigate whether hyperons and/or quark matter can be accommodated in massive compact stars by constructing an equation of state based on a combination of phenomenological relativistic hyper-nuclear density functional and an effective model of quantum chromodynamics (the Nambu-Jona-Lasinio model). Stable configurations are obtained with $M \ge 1.97 M_{\sun}$ featuring hyper-nuclear and quark matter in color superconducting state if the equation of state of nuclear matter is stiff above the saturation density, the transition to quark matter takes place at a few times the nuclear saturation density, and the repulsive vector interactions in quark matter are substantial.
description: 5 pages, 4 figures; v2: minor editorial changes, version published in Astronomy and Astrophysics
Evidence for dark matter contraction and a Salpeter IMF in a massive early-type galaxy
Creators: name: Sonnenfeld, Alessandro
name: Treu, Tommaso
name: Gavazzi, Raphael
name: Marshall, Philip J.
name: Auger, Matthew W.
name: Suyu, Sherry H.
name: Koopmans, Leon V. E.
name: Bolton, Adam S.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Stars and dark matter account for most of the mass of early-type galaxies, but uncertainties in the stellar population and the dark matter profile make it challenging to distinguish between the two components. Nevertheless, precise observations of stellar and dark matter are extremely valuable for testing the many models of structure formation and evolution. We present a measurement of the stellar mass and inner slope of the dark matter halo of a massive early-type galaxy at $z=0.222$. The galaxy is the foreground deflector of the double Einstein ring gravitational lens system SDSSJ0946+1006, also known as the "Jackpot". By combining the tools of lensing and dynamics, we first constrain the mean slope of the total mass density profile ($ρ_{\rm{tot}}\propto r^{-γ'}$) within the radius of the outer ring to be $γ' = 1.98\pm0.02\pm0.01$. Then we obtain a bulge-halo decomposition, assuming a power-law form for the dark matter halo. Our analysis yields $γ_{\rm{DM}} = 1.7\pm0.2$ for the inner slope of the dark matter profile, in agreement with theoretical findings on the distribution of dark matter in ellipticals, and a stellar mass from lensing and dynamics $M_*^{\rm{LD}} = 5.5_{-1.3}^{+0.4}\times10^{11}M_\Sun$. By comparing this measurement with stellar masses inferred from stellar population synthesis fitting we find that a Salpeter IMF provides a good description of the stellar population of the lens while the probability of the IMF being heavier than Chabrier is 95%. Our data suggest that growth by accretion of small systems from a compact red nugget is a plausible formation scenario for this object.
description: 18 pages, 17 figures. Accepted for publication in ApJ
Search for a vector gauge boson in phi meson decays with the KLOE detector
Creators: name: 2 Collaboration
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: The existence of a light dark force mediator has been tested with the KLOE detector at DAPHNE. This particle, called U, is searched for using the decay chain phi-->etaU, eta-->pi+pi-pi0, U-->e+e-. No evidence is found in 1.5 fb-1 of data. The resulting exclusion plot covers the mass range 5
description: 13 pages, 8 figures
Optimal personalized treatment selection with multivariate outcome measures in a multiple treatment case
Creators: name: Siriwardhana, Chathura
name: Kulasekera, K. B.
Publisher: name: Taylor & Francis
Year: 2021
Subjects: subject: Medicine
subject: Pharmacology
subject: Biotechnology
subject: Immunology
subject: FOS: Clinical medicine
subject: Mathematical Sciences not elsewhere classified
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences

description: In this work we propose a novel method for individualized treatment selection when there are correlated multiple treatment responses. For the K treatment (K≥2) scenario, we compare quantities that are suitable indexes based on outcome variables for each treatment conditional on patient-specific scores constructed from collected covariate measurements. Our method covers any number of treatments and outcome variables, and it can be applied for a broad set of models. The proposed method uses a rank aggregation technique that takes into account possible correlations among ranked lists to estimate an ordering of treatments based on treatment performance measures such as the smooth conditional mean. The method has the flexibility to incorporate patient and clinician preferences into the optimal treatment decision on an individual case basis. A simulation study demonstrates the performance of the proposed method in finite samples. We also present data analyses using HIV clinical trial data to show the applicability of the proposed procedure for real data.
Data Analytics and Decision-Making in Education: Towards the Educational Data Scientist as a Key Actor in Schools and Higher Education Institutions
Creators: name: Agasisti, Tommaso
name: Bowers, Alex J.
Publisher: name: Columbia University
Year: 2017
Subjects: School management and organization
Decision making
Educational planning
Quantitative research

description: In this chapter, we outline the importance of data usage for improving policy-making (at the system level), management of educational institutions and pedagogical approaches in the classroom. We illustrate how traditional data analyses are becoming gradually substituted by more sophisticated forms of analytics, and we provide a classification for these recent movements (in particular learning analytics, academic analytics and educational data mining). After having illustrated some examples of recent applications, we warn against potential risks of inadequate analytics in education, and list a number of barriers that impede the widespread application of better data use. As implications, we call for a development of a more robust professional role of data scientists applied to education, with the aim of sustaining and reinforcing a positive data-driven approach to decision making in the educational field.
Keywords: Data analysis, learning analytics, data-driven decision making, educational management and policy, data scientist
On supersymmetric interfaces for string theory
Creators: name: Satoh, Yuji
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We construct the world-sheet interface which preserves space-time supersymmetry in type II superstring theories in the Green-Schwarz formalism. This is an analog of the conformal interface in two-dimensional conformal field theory. We show that a class of the supersymmetric interfaces generates T-dualities of type II theories, and that these interfaces have a geometrical interpretation in the doubled target space. We compute the partition function with a pair of the supersymmetric interfaces inserted, from which we read off the spectrum of the modes coupled to the interfaces and the Casimir energy between them. We also derive the transformation rules under which a set of D-branes is transformed to another by the interface.
description: 1+23 pages, 1 figure; (v2) added comments, made changes in presentation
Fileprints: Identifying File Types by n-gram Analysis
Creators: name: Li, Wei-Jen
name: Wang, Ke
name: Stolfo, Salvatore
name: Herzog, Benjamin
Publisher: name: Columbia University
Year: 2005
Subjects: Computer science

description: We propose a method to analyze files to categorize their type using efficient 1-gram analysis of their binary contents. Our aim is to be able to accurately identify the true type of an arbitrary file using statistical analysis of their binary contents without parsing. Consequently, we may determine the type of a file if its name does not announce its true type. The method represents each file type by a compact representation we call a fileprint, effectively a simple means of representing all members of the same file type by a set of statistical 1-gram models. The method is designed to be highly efficient so that files can be inspected with little or no buffering, and on a network appliance operating in high bandwidth environment or when streaming the file from or to disk.
Alternative expectation approaches for expectation-maximization missing data imputations in cox regression
Creators: name: Sağlam, Fatih
name: Şanlı, Tuba
name: Cengiz, Mehmet Ali
name: Terzi, Yüksel
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences
subject: Mathematical Sciences not elsewhere classified

description: Missing data is common in survival analysis. It is either removed or imputed using various methods. Expectation-maximization (EM) imputation is a popular method in Cox regression studies. This paper investigated the effect of different regression methods on Cox regression modeling within the framework of EM. A stratified Cox regression model was derived from a dataset of categorical and numerical variables. Missing data were imputed using the EM framework with five machine learning algorithms and then were compared to the full model. The results show that the recursive partition and regression tree (RPART) method performed better than others. However, all regression methods performed poorly in categorical covariate imputation. R code is available online.
title: North Sea GOV ground gear bag trials
Creators: name: Harley, Brian
name: Kupschus, Sven
name: Locker, Arnold
Publisher: name: ASC 2009 - Theme session L
Year: 2024
Subjects: Fisheries and aquaculture

description: No abstracts are to be cited without prior reference to the author.The UK fishing industry has argued that the international bottom trawl survey carried out in English waters on the RV Cefas Endeavour is not representative of the numbers of fish, especially cod, in the North Sea. They are particularly concerned with the setup of the ground gear. During two periods in 2008 catch rate comparisons were made between a commercial fishing boat and the Cefas Endeavour using the GOV gear. The rate of escape of the main commercial species from the standard GOV trawl was assessed by fitting additional nets behind the ground gear. The aim was to determine not only the escape rate, but also the factors, if any, that influenced escape. In January 2008, the GOV and commercial trawls had similar overall catches of cod, and the catch rates of the nets were strongly correlated. In contrast, GOV catch rates of cod in September 2008 were only 8% of the catch rates of the commercial gear, and although catch rates were positively correlated, the correlation was weaker than in January. In contrast with cod, the relative performance of the two nets for catching haddock, whiting and plaice was more consistent between January and September. It was considered possible that with the greater water clarity and improved visibility of the gears and sediment plumes in September, the design and towing geometry (e.g. sweep angle) of the commercial trawl may have become more effective than that of the GOV for herding cod. Escapement of cod under the GOV net was 20% in January and 14% in September. A GAM model fitted to the escapement data for cod indicated effects of season (reduced escape rates in autumn), fish length (reduced escape rates in larger fish) and overall catch rate (increased escape rates in small catches). This could potentially cause the catchability characteristics of the GOV to drift over time in response to changes in the density distribution of cod in the survey area. This was demonstrated by applying the results of the GAM model to the data from the time series of Cefas IBTS Q3 surveys to estimate potential escape rates at each station. On average, the probability of a cod escaping underneath the standard GOV gear was predicted to be ~ 25% at low densities, decreasing to around ~15% at greater abundance, indicating that the relationship between abundance on the grounds and the survey catch rates is not linear, as assumed by the assessment. The effect of this trend on the ICES assessment of North Sea cod was found to be relatively minor
Blurred Experiences: The undefined contours of student learning in online environments
Creators: name: Hibbert, Melanie C.
Publisher: name: Columbia University
Year: 2017
Subjects: Web-based instruction
Instructional films
Instructional systems--Design

description: The purpose of this study was to investigate student learning experiences with online instructional videos. Drawing upon qualitative interviews and user experience talk-throughs, this paper argues that students do not necessarily experience online instructional videos (and other types of course content) as discrete elements, or differentiate them from other aspects of the course. The implications are that students have significant agency in these online environments and their meaning-making of instructional content may not align with designers’ intentions. In addition, the times and contexts in which students view instructional videos shifts (e.g. between home and commuting). The emerging findings have design implications related to the creation of learning environments in online spaces, such as fully integrating content within the instructional design of a course and focusing on the digital contexts in which educational content is embedded.
The effect of intermediate mass close binaries on the chemical evolution of Globular Clusters
Creators: name: Vanbeveren, D.
name: Mennekens, N.
name: De Greve, J. P.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Context. The chemical processes during the Asymptotic Giant Branch (AGB) evolution of intermediate mass single stars predict most of the observations of the different populations in globular clusters although some important issues still need to be further clarified. In particular, to reproduce the observed anticorrelations of Na-O and Al-Mg, chemically enriched gas lost during the AGB phase of intermediate mass single stars must be mixed with matter with a pristine chemical composition. The source of this matter is still a matter of debate. Furthermore, observations reveal that a significant fraction of the intermediate mass and massive stars are born as components of close binaries. Aims. We will investigate the effects of binaries on the chemical evolution of Globular Clusters and on the origin of matter with a pristine chemical composition that is needed for the single star AGB scenario to work Methods. We use a population synthesis code that accounts for binary physics in order to estimate the amount and the composition of the matter returned to the interstellar medium of a population of binaries. Results. We demonstrate in the present paper that the mass lost by a significant population of intermediate mass close binaries in combination with the single star AGB pollution scenario may help to explain the chemical properties of the different populations of stars in Globular Clusters.
description: 11 pages, 4 figures. Paper accepted for Astron. & Astrophys
Extraterritoriality of Securities Law Redux: Litigation Five Years After Morrison v. National Australia Bank
Creators: name: Guseva, Yuliya
Publisher: name: Columbia University
Year: 2017
Subjects: subject: Law
subject: FOS: Law
subject: Class actions (Civil procedure)
subject: Extraterritoriality
subject: Business enterprises, Foreign
subject: Costs (Law)

description: In the famous Morrison v. National Australia Bank case, Justice Scalia mounted an attack on plaintiffs with tenuous connection to U.S. capital markets and attempted to rein in class actions against international corporations. Despite Morrison’s broad implications, there is no consensus on its ultimate impact. This Article contributes to this discussion by examining the risk of litigation faced by foreign firms before and after Morrison. The research reviews securities class actions between 2005 and 2015. The timeframe of the reported filings is from January 2005 through December 2015, i.e., about five years before and five years after Morrison. The Article reports data obtained from the filings and related court decisions, updated as of November 30, Extraterritoriality of Securities Law Redux: Litigation Five Years After Morrison v. National Australia Bank 2016. The Article concludes that, first, the actual risk of litigation has become more ascertainable and slightly lower than before Morrison. Second, Morrison affected the composition of the plaintiffs’ class. Based on mean and median settlement values, Morrison may be associated with lower litigation costs. Third, the results suggest that when firms select a cross-listing mode (i.e., an exchange listing or OTC trading), they effectively choose their level of commitment to U.S. markets through not only the ex-ante known reporting costs, but also projected litigation costs. Fourth, the research reviews the timing of settlements and dismissals vis-à-vis the types of cross-listing programs. Although more research is needed in this area, Morrison may have enabled foreign firms to rule out inflated assessments of the risk of litigation and to more precisely determine the expected value of their cross-listing programs net of litigation.
Quantum metrology for non-linear phase shifts with entangled coherent states
Creators: name: Joo, Jaewoo
name: Park, Kimin
name: Jeong, Hyunseok
name: Munro, William J.
name: Nemoto, Kae
name: Spiller, Timothy P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the phase enhancement of quantum states subject to non-linear phase shifts. The optimal phase estimation of even entangled coherent states (ECSs) is shown to be better than that of NOON states and of odd ECS states with the same average particle number and non-linearity exponent k. We investigate the creation of approximate ECSs (AECSs) from a squeezed vacuum with current optical technology methods and find that a pure AECS is even slightly better than an even ECS for large . We also examine simple but physically relevant cases of loss in the non-linear interferometer arm, for a fixed .
description: 7 pages and 6 figures
Confidence intervals for the parameter of the scaled-uniform model
Creators: name: De Santis, Fulvio
name: Gubbiotti, Stefania
Publisher: name: Taylor & Francis
Year: 2021
Subjects: Space Science
Medicine
Biological Sciences not elsewhere classified
Mathematical Sciences not elsewhere classified

description: The scaled-uniform model has been lately considered to illustrate problems in frequentist point estimation arising when the minimal sufficient statistic is not complete. Here we consider the problem of interval estimation and derive pivotal quantities based on a series of point estimators proposed in the literature. We compare the resulting intervals of given confidence level in terms of expected lengths. Pivotal quantities, confidence intervals and expected lengths are all computed using simulations implemented with R (code is available). Numerical results suggest that the maximum likelihood estimator, regardless of its inefficiency, yields confidence intervals that outperform the other available sets of the same level.
Mycomya (Mycomyopsis) trilineata
Creators: name: Kolcsár, Levente-Péter
name: Salmela, Jukka
Publisher: name: Zenodo
Year: 2017
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Diptera
Mycetophilidae
Mycomya
Mycomya trilineata

description: Mycomya (Mycomyopsis) trilineata (Zetterstedt, 1838) Material examined. Figure 1. Montenegro: Šavnik, Petnjica, dry beech forest, 1057 m a.s.l., 42.9836° N, 019.0733° E, 30 April 2014, Kolcsár L.-P. leg., 1 male, DIPT-JS-2016-0202. A widespread Palaearctic species (Väisänen 1984), here reported for the first time from Montenegro. Larvae are mycophagous; adults have been reared from Leccinum scabrum (Väisänen 1984), Laxitextum bicolor, and Phlebia tremellosa (Jakovlev 2011).
description: Published as part of Kolcsár, Levente-Péter & Salmela, Jukka, 2017, New taxonomic and faunistic records of fungus gnats (Insecta, Diptera) from Montenegro, Romania, and Serbia, pp. 533-559 in Check List 13 (5) on page 541, DOI: 10.15560/13.5.533
description: {"references": ["Zetterstedt JW (1838) Dipterologia Scandinaviae Sect. 3: Diptera. lnsecta Lapponica 3: 477 - 868.", "Vaisanen R (1984) Monograph of the genus Mycomya Rondani in the Holarctic region (Diptera, Mycetophilidae). Acta Zoologica Fennica 177: 1 - 346.", "Jakovlev J (2011) Fungus gnats (Diptera: Sciaroidea) associated with dead wood and wood growing fungi: new rearing data from Finland and Russian Karelia and general analysis of known larval microhabitats in Europe. Entomologica Fennica 22 (3): 157 - 189."]}
PYGMY STRUCTURES IN 208PB AND 90ZR STUDIED WITH THE INELASTIC SCATTERING OF 17O AT 20 MEV/U
Creators: name: NICOLINI, ROBERTO
Publisher: name: Universit� degli Studi di Milano
Year: 2012

description: Over the last years, the evolution of nuclear structure as a function of the N/Z ratio has become a key question in nuclear physics. Special attention has been given to the vibrational modes of dipole nature: nuclei with a neutron excess show an increase of dipole strength close to the neutron separation energy, commonly associated to a new type of collective motion called the Pygmy Dipole Resonance (PDR).
Besides being intrinsically interesting as new structure phenomena, the pygmy resonance is also expected to play an important role in nuclear astrophysics, for the effect it has on neutron capture rates along the r-process path.
From the experimental point of view, the PDR has been investigated systematically in a large number of stable nuclei with the photon scattering technique, but to gain more insight into its structure different experiments, with different probes, are needed.
For this reason, an experiment was performed in June 2010 at Legnaro National Laboratories, aimed at the study of highly excited states in the target nuclei, including the pygmy region and up to the giant resonance region.
The resonance states were populated by the inelastic scattering of a 17O beam at the energy of 20 MeV/u, and their subsequent gamma decay was measured with the AGATA (Advanced GAmma-ray Tracking Array) Demonstrator, the new generation HPGe array based on the techniques of pulse shape analysis and gamma-ray tracking. The Demonstrator was coupled to an array of 3 large volume LaBr3:Ce scintillators to increase the total efficiency; the remaining solid angle was covered by 20 BaF2 scintillators. Two segmented ?E-E Si telescopes were used to identify of the scattered beam ions and to measure the excitation energy transferred to the target nucleus. The experiment measured the gamma decay from two targets: the doubly magic 208Pb, which had been previously measured with the same technique but a worse energy resolution, and the semimagic 90Zr. This thesis work details the analysis performed on this experiment and presents the first preliminary results on the measurements of the PDR in 208Pb and 90Zr with the inelastic scattering of 17O at 20 MeV/u.
Phase transition of interacting disordered bosons in one dimension
Creators: name: Ristivojevic, Zoran
name: Petkovic, Aleksandra
name: Doussal, Pierre Le
name: Giamarchi, Thierry
Publisher: name: arXiv
Year: 2012
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: Interacting bosons generically form a superfluid state. In the presence of disorder it can get converted into a compressible Bose glass state. Here we study such transition in one dimension at moderate interaction using bosonization and renormalization group techniques. We derive the two-loop scaling equations and discuss the phase diagram. We find that the correlation functions at the transition are characterized by universal exponents in a finite region around the fixed point.
description: five pages and two pages and one figure