cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Two novel cyclohexanone-monocyclic polycyclic polyprenylated acylphloroglucinols from Garcinia multiflora fruits
Creators: name: Teng, Haida
name: Ma, Ziyu
name: Teng, Hongli
name: Du, Yan
name: Chen, Xi
name: Chen, Yu
name: Yang, Guangzhong
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Biochemistry
subject: Medicine
subject: Microbiology
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences

description: Two novel cyclohexanone-monocyclic polyprenylated acylphloroglucinol (C-MPAP) derivatives, named norgarmultinones A (1) and B (2), were isolated from the fruits of Garcinia multiflora. Their structures were clarified by NMR, HRESIMS and calculated electronic circular dichroism (ECD) spectra. Compound 2 is the first example of naturally occurring C-MPAPs containing tetrahydropyran moiety by the cyclization of an enolic hydroxyl with an isogeranyl side chain. The reasonable biosynthetic routes of 1 and 2 were also put forward.
title: Das Recht auf eine selbstbestimmte Erwerbsbiografie. Eine prozedurale Betrachtung von Anpassungs- und Finanzierungsansprüchen für Übergangssituationen
Creators: name: Kocher, Eva
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2018

description: Ein Wandel der Strukturen der Erwerbsarbeit spiegelt sich in der Regel nach einer gewissen Zeit auch in Veränderungen des Arbeits- und Sozialesrechts wider. Für solche Anforderungen an das Recht sind unterschiedliche Leitkonzepte vorgeschlagen worden, insbesondere in Hinblick auf eine lebenslauforientierte Gestaltung des Rechts. Der vorliegende Beitrag knüpft an Konzepte für sogenannte Ziehungsrechte und eine "Arbeits- oder Beschäftigungsversicherung" an und entwockelt zunächst den Vorschlag, die hiermit umrissenen Anforderungen an die Regulierung als "Recht auf eine selbstbestimmte Erwerbsbiografie" auf den juristischen Begriff zu bringen.
Generalizing Logic Circuit Designs by Analyzing Proofs of Correctness
Creators: name: Ellman, Thomas
Publisher: name: Columbia University
Year: 1985
Subjects: Computer science

description: This paper presents a method of learning to solve design problems by generalizing examples. The technique has been developed in the domain of logic circuit design. It involves the use of domain knowledge to analyze examples and produce generalized circuit designs. The method utilizes proofs of design correctness to guide the process of generalization. Our approach is illustrated by showing it can generalize a circular shift register into a schema describing devices capable of computing arbitrary permutations.
title: Die "soziale Entwicklung" bei der Arbeitsteilung zwischen den Geschlechtern - Das Urteil des polnischen Verfassungsgerichtshofs zum ungleichen Rentenalter von Frauen und Männern
Creators: name: Kocher, Eva
name: Skowron, Magdalena
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2018

description: Der polnische Verfassungsgerichtshof hat sich in seinem Urteil zur Zulässigkeit eines ungleichen Rentenalters von Frauen und Männern unter anderem damit auseinander gesetzt, welche "soziale Entwicklung" in Polen eine Ausnahme vom Grundsatz der Gleichbehandlung rechtfertigt. Mehrere Sondervoten zeigen, wie umstritten die Bedeutung des Gleichheitssatzes in Polen aktuell ist - eines Rechtssatzes, der denen der meisten Mitgliedstaaten sowie dem europäischen Recht strukturell und funktional äquivalent ist.
Additional file 1 of Changes in inflammatory factors in the Brown Norway rat model of food allergy
Creators: name: Zhu, Qingling
name: Wang, Junli
name: Ma, Jingqiu
name: Sheng, Xiaoyang
name: Li, Feng
Publisher: name: figshare
Year: 2021
Subjects: subject: Immunology
subject: FOS: Clinical medicine

description: Additional file 1: S1. The levels of S100A8/A9 in the experimental group. S2. The levels of S100A8/A9 in the control group. S3. The levels of TLR4 in the experimental group. S4. The levels of TLR4 in the control group. S5. The levels of TNF-α in the experimental group. S6. The levels of TNF-α in the control group. S7. The levels of GAPDH in the experimental group. S8. The levels of GAPDH in the control group.
Investigating the interaction of pleasantness and arousal and the role of aesthetic emotions on episodic memory using a musical what-where-when paradigm
Creators: name: Nawaz, Safiyyah
name: Omigie, Diana
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Neuroscience
subject: 111714 Mental Health
subject: FOS: Health sciences

description: Recent evidence suggests that the presence of music experienced as pleasant positively influences episodic memory (EM) encoding. However, it is unclear whether this impact of pleasant music holds regardless of how arousing the music is, and what influence, if any, music-induced aesthetic emotions have. Furthermore, most music EM studies have used verbal or facial memory tasks limiting the generalisability of these findings to everyday EMs with spatiotemporal richness. The current study used an online what-where-when paradigm to assess music's influence on EM encoding in a rich spatiotemporal environment. 105 participants carried out the what-where-when task in the presence of either silence or one of four musical stimuli falling into the four corners of the 2-D circumplex emotion model. We observed an interaction effect between the pleasantness and arousingness of music stimuli, whereby for pleasant stimuli, the low arousing excerpt was associated with better recall performance compared to the high arousing excerpt. We also observed that, across all excerpts, experience of negative aesthetic emotions was associated with compromised recall performance. Together, our results confirm the deleterious influence arousing stimuli can have on memory and support the notion that aesthetic-emotional experience of music can influence how memories are encoded in everyday life.
An Abort Mechanism for Nested Distributed Transactions
Creators: name: Duchamp, Dan
Publisher: name: Columbia University
Year: 1989
Subjects: Computer science

description: A transaction processing facility must have a mechanism for aborting transactions on request. This paper describes a mechanism for aborting transactions that can be arbitrarily nested and/or distributed. The mechanism consists of an "abort protocol" plus an adjustment to the commit protocol. The abort protocol locates and terminates as many of the transaction's operations as it can. If after the protocol has finished it is still possible that orphaned operations exist, then a simple check during the prepare phase of the commit protocol ensures that no orphan commits. The mechanism has many advantages: provided that the communication subsystem provides prompt failure detection, there will be no orphans: a site can abort unilaterally: there is little overhead on transaction-operation messages, and relatively few and relatively minor restrictions on the transaction facility: no information need be maintained in stable storage: and the abort protocol never blocks. The primary disadvantages of the mechanism are that the abort protocol must be synchronous, that it may over-abort in some cases, and that - if the communication subsystem does not provide prompt failure detection - there is no limit on the extent or lifetime of orphaned computations.
Unique Cartan decomposition for II_1 factors arising from arbitrary actions of hyperbolic groups
Creators: name: Popa, Sorin
name: Vaes, Stefaan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Operator Algebras (math.OA)
subject: Dynamical Systems (math.DS)
subject: Group Theory (math.GR)
subject: FOS: Mathematics

description: We prove that for any free ergodic probability measure preserving action $Γ\actson (X,μ)$ of a non-elementary hyperbolic group, or a lattice in a rank one simple Lie group, the associated group measure space II_1 factor $L^\infty(X) \rtimes Γ$ has L^\infty(X) as its unique Cartan subalgebra, up to unitary conjugacy.
description: v3: Considerably simplified proof of the main result. v2: Improved exposition; new result proving uniqueness of Cartan for crossed products by irreducible lattices in products of rank one Lie groups
Streak Seeding Automation Using Silicon Tools
Creators: name: Georgiev, Atanas
name: Vorobiev, Sergeui M.
name: Edstrom, William
name: Song, Ting
name: Laine, Andrew F.
name: Hunt, John F.
name: Allen, Peter K.
Publisher: name: Columbia University
Year: 2006
Subjects: Computer science

description: This report presents an approach to automation of a protein crystallography task called streak seeding. The approach is based on novel and unique custom-designed silicon microtools, which we experimentally verified to produce results similar to the results from traditionally used boar bristles. The advantage to using silicon is that it allows the employment of state-of-the-art micro-electro-mechanical-systems (MEMS) technology to produce microtools of various shapes and sizes and that it is rigid and can be easily adopted as an accurately calibrated end-effector on a microrobotic system. A working prototype of an automatic streak seeding system is presented, which has been successfully applied for protein crystallization.
ACE: An Expert System Supporting Analysis and Management Decision Making
Creators: name: Stolfo, Salvatore
name: Vesonder, Gregg T.
Publisher: name: Columbia University
Year: 1982
Subjects: Expert systems (Computer science)
Database management
Telephone cables--Maintenance and repair

description: ACE, a system for Automated Cable Expertise, is a Knowledge-Based Expert System designed to provide trouble-shooting reports and management analyses for telephone cable maintenance in a timely manner. Many design decisions faced during the construction of ACE were guided by recent successes in expert systems technology, most notably R1/XCON, the Digital Equipment Corporation Vax configuration program. The most significant departure from "standard" expert systems architectures is ACE's use of a conventional data base management system as its primary source of information. Its primary sources of knowledge are the expert users of the database system, and primers on maintenance analysis strategies. The coupling of "knowledge-base" and "data-base" demonstrates in a forceful way the manner in which an expert system can significantly enhance the throughput and quality of data processing environments supporting business management. However, further difficult problems must be solved before the expert system approach becomes a standard technique in the data processing industry.
Figure S3: from CG7379/ING1 suppress cancer cell invasion by maintaining cell–cell junction integrity
Creators: name: Rusu, Alexandra D.
name: Cornhill, Zoe E.
name: Coutiño, Brenda Canales
name: Uribe, Marcos Castellanos
name: Lourdusamy, Anbarasu
name: Markus, Zsuzsa
name: May, Sean T.
name: Rahman, Ruman
name: Georgiou, Marios
Publisher: name: The Royal Society
Year: 2021
Subjects: Biochemistry
Cell Biology
Molecular Biology

description: E-cadherin overexpression cannot rescue CG7379KD induced cell delamination
Semicrossed products of the disk algebra and the Jacobson radical
Creators: name: Khemphet, Anchalee
name: Peters, Justin R.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Operator Algebras (math.OA)
subject: FOS: Mathematics
subject: 47L65 primary, 47L20, 30J10, 30H50 secondary

description: We consider semicrossed products of the disk algebra with respect to endomorphisms defined by finite Blaschke products. We characterize the Jacobson radical of these operator algebras. Furthermore, in the case the finite Blaschke product is elliptic, we show that the semicrossed product contains no nonzero quasinilpotent elements. However, if the finite Blaschke product is hyperbolic or parabolic with zero hyperbolic step, the Jacobson radical is nonzero and a proper subset of the set of quasinilpotent elements.
description: 12 pages
Quantitative estimates in Beurling--Helson type theorems
Creators: name: Lebedev, Vladimir
Publisher: name: arXiv
Year: 2011
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 42A16

description: We consider the spaces $A_p(\mathbb T)$ of functions $f$ on the circle $\mathbb T$ such that the sequence of Fourier coefficients $\fu{\f}=\{\fu{\f}(k), ~k \in \mathbb Z\}$ belongs to $l^p, ~1\leq p<2$. The norm on $A_p(\mathbb T)$ is defined by $\|f\|_{A_p}=\|\fu{\f}\nolinebreak\|_{l^p}$. We study the rate of growth of the norms $\|e^{iλφ}\|_{A_p}$ as $|λ|\rightarrow \infty, ~λ\in\mathbb R,$ for $C^1$ -smooth real functions $φ$ on $\mathbb T$. The results have natural applications to the problem on changes of variable in the spaces $A_p(\mathbb T)$.
An Integrated System for Dextrous Manipulation
Creators: name: Allen, Peter K.
name: Michelman, Paul
name: Roberts, Kenneth S.
Publisher: name: Columbia University
Year: 1988
Subjects: Computer science
Robotics

description: This paper describes an integrated system for dextrous manipulation using a Utah-MIT hand that allows one to look at the higher levels of control in a number of grasping and manipulation tasks. The system consists of a number of low-level system primitives for grasping, integrated hand and robotic arm movement, tactile sensors mounted on the fingertips, sensing primitives to utilize joint position, tendon force and tactile array feedback, and a high-level programming environment that allows task level scripts to be created for grasping and manipulation tasks. A number of grasping and manipulation tasks are described that have been implemented with this system.
Optimal Parallel Algorithms for String Matching
Creators: name: Galil, Zvi
Publisher: name: Columbia University
Year: 1983
Subjects: Computer science

description: Let WRAM [PRAM] be a parallel computer with p processors (RAM's) which share a common memory and are allowed simultaneous reads and writes [only simultaneous reads]. The only type of simultaneous writes allowed is a simultaneous AND: several processors may write O simultaneously into the same memory cell. Let t be the time bound of the computer. We design below families of parallel algorithms that solve the string matching problem with inputs of size n (n is the sum of lengths of the pattern and the text) and have the following performance in terms of p, t and n: 1. For WRAM: pt = O(n) for for p â‰¤ n/log n. 2. For PRAM: pt = O(n) for P â‰¤ n/log2n. 3. For WRAM: t = constant for p = nl+ ε and any ε > O. 4. For WRAM: t = O(log n/log log n) for p = n. Similar families are also obtained for the problem of finding all initial palindromes of a given string.
On the Complexity of Composition and Generalized Composition of Power Series
Creators: name: Brent, R. P.
name: Traub, Joseph F.
Publisher: name: Columbia University
Year: 1985
Subjects: Computer science

description: Let F(x) = f1x + f2(x)(x) + . . . be a formal power series over a field Delta. Let F superscript 0(x) = x and for q = 1,2 . . . , define F superscript q(x) = F superscript (q-1) (F(x)). The obvious algorithm for computing the first n terms of F superscript q(x) is by the composition position analogue of repeated squaring. This algorithm has complexity about log 2 q times that of a single composition. The factor log 2 q can be eliminated in the computation of the first n terms of (F(x)) to the q power by a change of representation, using the logarithm and exponential functions. We show the factor log 2 q can also be eliminated for the composition problem. F superscript q(x) can often, but not always, be defined for more general q. We give algorithms and complexity bounds for computing the first n terms of F superscript q(x) whenever it is defined.
A Hybrid Hierarchical and Peer-to-Peer Ontology-based Global Service Discovery System
Creators: name: Arabshian, Knarig
name: Schulzrinne, Henning G.
Publisher: name: Columbia University
Year: 2005
Subjects: Computer science

description: Current service discovery systems fail to span across the globe and they use simple attribute-value pair or interface matching for service description and querying. We propose a global service discovery system, GloServ, that uses the description logic Web Ontology Language (OWL DL). The GloServ architecture spans both local and wide area networks. It maps knowledge obtained by the service classification ontology to a structured peer-to-peer network such as a Content Addressable Network (CAN). GloServ also performs automated and intelligent registration and querying by exploiting the logical relationships within the service ontologies.
Whether there is the intrinsic Hall effect in a multi-band superconductor?
Creators: name: Mineev, V. P.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: The interplay of the microscopic models and the symmetry considerations in application to the superconducting state of putative chiral superconductor Sr2RuO4 are presented. There is demonstrated that chiral two-band superconducting ordering recently proposed as candidate for the superconducting state in this material and having the long-expected property such as the intrinsic Hall effect does not exist as energetically disadvantageous in comparison with the states not supporting the Hall effect. Other chiral multi-band superconducting states with intraband pairing do not support an intrinsic Hall properties as well. The superconducting states with direct interband pairing could serve as the probable candidates for the Hall effect existence.
description: 5 pages, no figures
"Necessary Contempt" : an analysis of Martin McDonagh's Aran Island trilogy
Creators: name: Garcia, Ernesto
Publisher: name: University of British Columbia
Year: 2011

description: In a narrative sense, how does a point of view create imaginable space in Martin McDonagh’s Aran Island Trilogy? And what role does bricolage, selective intertextuality, and postmodern pastiche play in the construction of imaginable space? McDonagh’s Aran Island Trilogy is a complex postmodern construction. It is not simply an appropriation of an iconic location, even though that is part of it, but something more of a subjective response which depends for its strength on a conviction that representation on stage is a form of truth. My research utilizes scholarship on the Aran Islands in conjunction with poets, filmmakers, and playwrights who engaged with these particular islands imaginatively. I illustrate how their diverse points of view created imaginable space that builds from a special place in western Irish imagery, a place that owes much to the late nineteenth century. Also, my examination focuses on McDonagh’s Aran Island Trilogy. These plays represent a new mix of messages, symbols, and cultures that reflect the postmodern condition. I employ two important postmodern thinkers to analyse McDonagh’s work through a postmodern filter: Umberto Eco for his theory of intertextuality, and Charles Jencks’ argument that postmodernism involves double coding the representation of modernism with something else----some Other. My research makes use of Robert Warshow and Carol Clover’s analysis of film genres: the Western and the slasher film. Also, I interrogate John Waters’ evaluation of McDonagh as a punk rock playwright in conjunction with the punk rock aesthetics of Shane MacGowan and the Pogues. These studies offer a methodological framework for my analysis of McDonagh’s style of representation: I argue that McDonagh’s punk-inspired mockery hollows out the primitivist representation of the Aran Islands and fills it with a postmodern plurality. Furthermore, the unsettling effect in McDonagh’s Aran Island Trilogy is due largely to the fact that he yokes the screen to the stage, and he fuses elements from the classical canon of Irish drama with popular genres from American cinema.
Optimizing Quality for Collaborative Video Viewing
Creators: name: Phung, Dan
name: Valetto, Giuseppe
name: Kaiser, Gail E.
name: Gupta, Suhit
Publisher: name: Columbia University
Year: 2004
Subjects: Computer science

description: The increasing popularity of distance learning and online courses has highlighted the lack of collaborative tools for student groups. In addition, the introduction of lecture videos into the online curriculum has drawn attention to the disparity in the network resources used by the students. We present an architecture and adaptation model called AI2TV (Adaptive Internet Interactive Team Video), a system that allows geographically dispersed participants, possibly some or all disadvantaged in network resources, to collaboratively view a video in synchrony. AI2TV upholds the invariant that each participant will view semantically equivalent content at all times. Video player actions, like play, pause and stop, can be initiated by any of the participants and the results of those actions are seen by all the members. These features allow group members to review a lecture video in tandem to facilitate the learning process. We employ an autonomic (feedback loop) controller that monitors clients' video status and adjusts the quality of the video according to the resources of each client. We show in experimental trials that our system can successfully synchronize video for distributed clients while, at the same time, optimizing the video quality given actual (fluctuating) bandwidth by adaptively adjusting the quality level for each participant.
Colorado water, March/April 2009
Creators: name: Schmidt, Laurie
name: Colorado Water Institute, Publisher
Publisher: name: Mountain Scholar
Year: 2009
Subjects: subject: Water resources development -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Colorado
subject: Water-supply -- Management -- Colorado

description: The newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the state's research universities.
description: Newsletter of the Water Center of Colorado State University. Theme: Endangered species.
Field Scanner Design for MUSTANG of the Green Bank Telescope
Creators: name: Cheng, Jingquan
name: Li, Yang
name: Li, Xinnan
name: Mason, Brian
Publisher: name: arXiv
Year: 2011
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: MUSTANG is a bolometer camera for the Green Bank Telescope (GBT) working at a frequency of 90 GHz. The detector has a field of view of 40 arcseconds. To cancel out random emission change from atmosphere and other sources, requires a fast scanning reflecting system with a few arcminute ranges. In this paper, the aberrations of an off-axis system are reviewed. The condition for an optimized system is provided. In an optimized system, as additional image transfer mirrors are introduced, new aberrations of the off-axis system may be reintroduced, resulting in a limited field of view. In this paper, different scanning mirror arrangements for the GBT system are analyzed through the ray tracing analysis. These include using the subreflector as the scanning mirror, chopping a flat mirror and transferring image with an ellipse mirror, and chopping a flat mirror and transferring image with a pair of face-to-face paraboloid mirrors. The system analysis shows that chopping a flat mirror and using a well aligned pair of paraboloids can generate the required field of view for the MUSTUNG detector system, while other systems all suffer from larger off-axis aberrations added by the system modification. The spot diagrams of the well aligned pair of paraboloids produced is only about one Airy disk size within a scanning angle of about 3 arcmin.
description: 7 pages, 9 figures
Butterflies of Rhishijharan Waterfall, Gariaband, With three additions to the state fauna of Chhattisgarh
Creators: name: Tandan, H N
Publisher: name: figshare
Year: 2023
Subjects: Bioinformatics and computational biology not elsewhere classified

description: Recent studies on butterflies from Chhattisgarh list 170 species, last updated with addition of Black Spotted Pierrot (Chand et al. 2022). The major contribution has been made by Sisodia (2019) who added 19 new records and listed 159 species from Chhattisgarh based on Chandra et al. (2014) and Dubey et al. (2015). Further addition to tally 170, has been made by Sisodia & Khirsagar (2020), Tandan et al. (2020, 2021a & b,) and Nihlani et al. (2021). Here we report three butterfly species for the first time from Chhattisgarh.
Acquisition and Interpretation of 3-D Sensor Data from Touch
Creators: name: Allen, Peter K.
name: Michelman, Paul
Publisher: name: Columbia University
Year: 1989
Subjects: Computer science

description: Acquisition of 3-D scene information has focused on either passive 2-D imaging methods (stereopsis, structure from motion etc.) or 3-D range sensing methods (structured lighting, laser scanning etc.). Little work has been done in using active touch sensing with a multi-fingered robotic hand to acquire scene descriptions, even though it is a well developed human capability. Touch sensing differs from other more passive sensing modalities such as vision in a number of ways. A multi-fingered robotic hand with touch sensors can probe, move, and change its environment. This imposes a level of control on the sensing that makes it typically more difficult than traditional passive sensors in which active control is not an issue. Secondly, touch sensing generates far less data than vision methods; this is especially intriguing in light of psychological evidence that shows humans can recover shape and a number of other object attributes very reliably using touch alone. Future robotic systems will need to use dextrous robotic hands for tasks such as grasping, manipulation, assembly, inspection and object recognition. This paper describes our use of touch sensing as part of a larger system we are building for 3-D shape recovery and object recognition using touch and vision methods. It focuses on three exploratory procedures we have built to acquire and interpret sparse 3-D touch data: grasping by containment, planar surface exploration and surface contour exploration. Experimental results for each of these procedures are presented.
A New Paradigm for Parallel and Distributed Rule-Processing
Creators: name: Wolfson, Ouri
name: Ozeri, Aya
Publisher: name: Columbia University
Year: 1989
Subjects: Computer science

description: This paper is concerned with the parallel evaluation of datalog rule programs, mainly by processors that are interconnected by a communication network. We introduce a paradigm, called data-reduction, for the parallel evaluation of a general datalog program. Several parallelization strategies discussed previously in [CW, GST, W, WS] are special cases of this paradigm. The paradigm parallelizes the evaluation by partitioning among the processors the instantiations of the rules. After presenting the paradigm, we discuss the following issues, that we see fundamental for parallelization strategies derived from the paradigm properties of the strategies that enable a reduction in the communication overhead, decomposability, load balancing, and application to programs with negation. We prove that decomposability, a concept introduced previously in [WS, CW], is undecidable.
An Automated Consultant for Interactive Environments
Creators: name: Wolz, Ursula
name: Kaiser, Gail E.
Publisher: name: Columbia University
Year: 1988
Subjects: Computer science

description: Interactive computing environments provide facilities intended to support and assist the range from novice to expert users, but casual users tend to get trapped in the starter set of commands. We have developed a rule-based technology for providing on-line assistance calibrated to both the task at hand and the user's past experience using the system. Such assistance helps users to progress to more advanced features. We present our automated consultant and describe its application to a practical domain, the Berkeley Unix mail system.
Measuring Uncertainty Without a Norm
Creators: name: Werschulz, Arthur G.
Publisher: name: Columbia University
Year: 1982
Subjects: Computer science

description: Traub, Wasilkowski, and Wozniakowski have shown how uncertainty can be defined and analyzed without a norm or metric. Their theory is based on two natural and non-restrictive axioms. We show that these axioms induce a family of pseudometrics, and that balls of radius E are (roughly) the E-approximations to the solution. In addition, we show that a family of pseudometrics is necessary, even for the problem of computing x such that | f(x) | < E , where f is a real function.
Experience with Process Modeling in the Marvel Software Development Environment Kernel
Creators: name: Kaiser, Gail E.
Publisher: name: Columbia University
Year: 1989
Subjects: Computer science

description: We have been working for several years on rule-based process modeling and the implementation of such models as part of the foundation for software development environments. We have defined a kernel, called MARVEL, for such an architecture and implemented several successive versions of the kernel and several small environments using the kernel. We have evaluated our results to date, and discovered several significant flaws and delineated several important open problems. Although the details are specific to rule-based process modeling, we believe that our insights will be valuable to other researchers and developers contemplating process modeling mechanisms.
No spin-localization phase transition in the spin-boson model without local field
Creators: name: Liu, Tao
name: Feng, Mang
name: Li, Lei
name: Yang, Wanli
name: Wang, Kelin
Publisher: name: arXiv
Year: 2012
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We explore the spin-boson model in a special case, i.e., with zero local field. In contrast to previous studies, we find no possibility for quantum phase transition (QPT) happening between the localized and delocalized phases, and the behavior of the model can be fully characterized by the even or odd parity as well as the parity breaking, instead of the QPT, owned by the ground state of the system. Our analytical treatment about the eigensolution of the ground state of the model presents for the first time a rigorous proof of no-degeneracy for the ground state of the model, which is independent of the bath type, the degrees of freedom of the bath and the calculation precision. We argue that the QPT mentioned previously appears due to unreasonable treatment of the ground state of the model or of the infrared divergence existing in the spectral functions for Ohmic and sub-Ohmic dissipations.
description: 5 pages, 1 figure. Comments are welcome
The Use of Explicit User Models in Text Generation: Tailoring to a User's Level of Expertise
Creators: name: Paris, Cecile L.
Publisher: name: Columbia University
Year: 1987
Subjects: Computer science

description: A question answering program that provides access to a large amount of data will be most useful if it can tailor its answers to each individual user. In particular, a user's level of knowledge about the domain of discourse is an important factor in this tailoring if the answer provided is to be both informative and understandable to the user. In this research, we address the issue of how the user's domain knowledge, or the level of expertise, might affect an answer. By studying texts we found that the user's level of domain knowledge affected the kind of information provided and not just the amount of information, as was previously assumed. Depending on the user's assumed domain knowledge. a description of a complex physical objects can be either parts-oriented or process-oriented. Thus the user's level of expertise in a domain can guide a system in choosing the appropriate facts from the knowledge base to include in an answer. We propose two distinct descriptive strategies that can be used to generate texts aimed at naive and expert users. Users are not necessarily truly expert or fully naive however, but can be anywhere along a knowledge spectrum whose extremes are naive and expert. In this work, we show how our generation system, TAILOR, can use information about a user's level of expertise to combine several discourse strategies in a single text, choosing the most appropriate at each point in the generation process, in order to generate texts for users anywhere along the knowledge spectrum. TAILOR's ability to combine discourse strategies based on a user model allows for the generation of a wider variety of texts and the most appropriate one for the user.
An empirical examination of the effects of endogenous growth on exhaustible resource prices
Creators: name: Tamblyn, Charles Vernon
Publisher: name: University of Calgary
Year: 2008

description: Bibliography: p. 35-37
description: This paper examines the role that technological change plays in the price paths of natural resource commodities. The theory of endogenous technological change suggests that the more important a resource is in the world economy, the more likely there will be innovation. The hypothesis tested in this paper is that periods of price declines for natural resources and minerals is induced by endogenous technical change. The nature of the relationship between prices and the share in the world economy is complicated by the fact that the resources price appears in both the growth rate of the price and the share of the world economy. This forces us to deal with the "reflection" problem in econometrics. Once this is done, we find that there is indeed a negative correlation between the rate of growth of prices and the share of the resource in the world economy.
Natural Language Systems: How are they meeting human needs?
Creators: name: McKeown, Kathleen
Publisher: name: Columbia University
Year: 1983
Subjects: Natural language processing (Computer science)
Computer science

description: One goal of natural language research is to make systems more accessible to their users by allowing them to interact with machines in a language as close as possible to the language people use among themselves. Developing systems that answer natural language questions is one way to allow users to interact easily with computers. In the following sections, I briefly describe ways in which researchers have been successful in this attempt, limitations inherent in existing natural language systems, and current efforts to bring systems closer to meeting the needs of their users. To illustrate these issues, I focus on natural language database systems as one example of question-answering systems.
A Hybrid Approach to Topological Mobile Robot Localization
Creators: name: Blaer, Paul S.
name: Allen, Peter K.
Publisher: name: Columbia University
Year: 2005
Subjects: Computer science

description: We present a hybrid method for localizing a mobile robot in a complex environment. The method combines the use of multiresolution histograms with a signal strength analysis of existing wireless networks. We tested this localization procedure on the campus of Columbia University with our mobile robot, the Autonomous Vehicle for Exploration and Navigation of Urban Environments. Our results indicate that localization accuracy is significantly improved when five levels of resolution are used instead of one in color histogramming. We also find that incorporating wireless signal strengths into the method further improves reliability and helps to resolve ambiguities which arise when different regions have similar visual appearances.
title: The Narrative Structure of Jan Potocki’s “Manuscript Found in Saragossa” in the Novel and in the Motion Picture - Slide show
Creators: name: Sprute, Hannah
name: Weber, Klaus
Publisher: name: Europa-Universität Viadrina Frankfurt
Year: 2019

description: The narrative structure of Jan Potocki’s “Manuscript Found in Saragossa” in the novel and in the motion picture as a slide show.
Nonperturbative Loop Quantization of Scalar-Tensor Theories of Gravity
Creators: name: Zhang, Xiangdong
name: Ma, Yongge
Publisher: name: arXiv
Year: 2011
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: The Hamiltonian formulation of scalar-tensor theories of gravity is derived from their Lagrangian formulation by Hamiltonian analysis. The Hamiltonian formalism marks off two sectors of the theories by the coupling parameter $ω(ϕ)$. In the sector of $ω(ϕ)=-3/2$, the feasible theories are restricted and a new primary constraint generating conformal transformations of spacetime is obtained, while in the other sector of $ω(ϕ)\neq-3/2$, the canonical structure and constraint algebra of the theories are similar to those of general relativity coupled with a scalar field. By canonical transformations, we further obtain the connection dynamical formalism of the scalar-tensor theories with real $su(2)$-connections as configuration variables in both sectors. This formalism enables us to extend the scheme of non-perturbative loop quantum gravity to the scalar-tensor theories. The quantum kinematical framework for the scalar-tensor theories is rigorously constructed. Both the Hamiltonian constraint operator and master constraint operator are well defined and proposed to represent quantum dynamics. Thus loop quantum gravity method is also valid for general scalar-tensor theories.
description: 18 pages, the sector of $\omega(\phi)=-3/2$ included, to be published in PRD
ACONITASE 3 is part of theANAC017 transcription factor-dependent mitochondrial dysfunction response
Creators: name: Pascual, J
name: Rahikainen, M
name: Angeleri, M
name: Alegre, S
name: Gossens, R
name: Shapiguzov, A
name: Heinonen, A
name: Trotta, A
name: Durian, G
name: Winter, Z
name: Sinkkonen, J
name: Kangasjarvi, J
name: Whelan, James
name: Kangasjarvi, S
Publisher: name: La Trobe
Year: 2021
Subjects: Uncategorized

description: Mitochondria are tightly embedded within metabolic and regulatory networks that optimize plant performance in response to environmental challenges. The best-known mitochondrial retrograde signaling pathway involves stress-induced activation of the transcription factor NAC DOMAIN CONTAINING PROTEIN 17 (ANAC017), which initiates protective responses to stress-induced mitochondrial dysfunction in Arabidopsis (Arabidopsis thaliana). Posttranslational control of the elicited responses, however, remains poorly understood. Previous studies linked protein phosphatase 2A subunit PP2A-B'c, a key negative regulator of stress responses, with reversible phosphorylation of ACONITASE 3 (ACO3). Here we report on ACO3 and its phosphorylation at Ser91 as key components of stress regulation that are induced by mitochondrial dysfunction. Targeted mass spectrometry-based proteomics revealed that the abundance and phosphorylation of ACO3 increased under stress, which required signaling through ANAC017. Phosphomimetic mutation at ACO3-Ser91 and accumulation of ACO3S91D-YFP promoted the expression of genes related to mitochondrial dysfunction. Furthermore, ACO3 contributed to plant tolerance against ultraviolet B (UV-B) or antimycin A-induced mitochondrial dysfunction. These findings demonstrate that ACO3 is both a target and mediator of mitochondrial dysfunction signaling, and critical for achieving stress tolerance in Arabidopsis leaves.
Disconnecting Solar Magnetic Flux
Creators: name: DeForest, C. E.
name: Howard, T. A.
name: McComas, D. J.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Space Physics (physics.space-ph)
subject: FOS: Physical sciences

description: Disconnection of open magnetic flux by reconnection is required to balance the injection of open flux by CMEs and other eruptive events. Making use of recent advances in heliospheric background subtraction, we have imaged many abrupt disconnection events. These events produce dense plasma clouds whose distinctie shape can now be traced from the corona across the inner solar system via heliospheric imaging. The morphology of each initial event is characteristic of magnetic reconnection across a current sheet, and the newly-disconnected flux takes the form of a "U"-shaped loop that moves outward, accreting coronal and solar wind material. We analyzed one such event on 2008 December 18 as it formed and accelerated at 20 m/s^2 to 320 km/s, expanding self-similarly until it exited our field of view 1.2 AU from the Sun. From acceleration and photometric mass estimates we derive the coronal magnetic field strength to be 8uT, 6 Rs above the photosphere, and the entrained flux to be 1.6x10^11 Wb (1.6x10^19 Mx). We model the feature's propagation by balancing inferred magnetic tension force against accretion drag. This model is consistent with the feature's behavior and accepted solar wind parameters. By counting events over a 36 day window, we estimate a global event rate of 1/day and a global solar minimum unsigned flux disconnection rate of 6x10^13 Wb/y (6x10^21 Mx/y) by this mechanism. That rate corresponds to ~0.2 nT/y change in the radial heliospheric field at 1 AU, indicating that the mechanism is important to the heliospheric flux balance.
description: preprint is 20 pages with 8 figures; accepted by APJ for publication in 2012
On Decision Trees, Influences, and Learning Monotone Decision Trees
Creators: name: O'Donnell, Ryan
name: Servedio, Rocco Anthony
Publisher: name: Columbia University
Year: 2004
Subjects: Computer science

description: In this note we prove that a monotone boolean function computable by a decision tree of size s has average sensitivity at most √ log2 s. As a consequence we show that monotone functions are learnable to constant accuracy under the uniform distribution in time polynomial in their decision tree size.
title: Emploi de vieilles briques dans les nouvelles constructions
Creators: name: Ritchie, T.
Publisher: name: Conseil national de recherches du Canada. Division des recherches en construction
Year: 1974
Subjects: subject: Brick
valueUri: urn:ircsubjects:IRC0730
subject: Briques
valueUri: urn:ircsubjects:IRC0730
subject: clay bricks
subject: brique en terre cuite
subject: recycling
subject: recyclage
subject: durability
subject: durabilité
subject: salvaging
subject: récuperation
subject: efflorescence
subject: weatherability
subject: résistance aux intempéries

description: Lorsqu'on les utilise à l'intérieur des bâtiments, les briques de récupération n'engendrent en général aucune difficulté. On doit cependant éviter les situations dans lesquelles elles sont nécessairement exposées aux intempéries, car plusieurs de leurs propriétés ont un effet défavorable sur la qualité et le comportement des ouvrages en briques. Lorsqu'on a besoin de briques "ancien style" pour ce genre d'application, on peut faire appel à la production canadienne moderne qui comprend des briques imitant la couleur, la texture, la forme, et les dimensions des briques fabriquées dans le passé, mais sont exemptes des faiblesses qui caractérisent ces dernières. Lorsqu'on estime nécessaire d'utiliser à l'extérieur des briques de récupération, on devra apporter une attention particulière au dessin des murs et leurs conférer le maximum de protection contre la pluie, l'humidité du sol ou le passage de vapeur d' eau provenant de l'intérieur du bâtiment. Il est recommandé d'utiliser pour la pose de briques de récupération du mortier de chaux et de sable.
A pseudoscalar at the LHC: technicolor vs a fourth family
Creators: name: Holdom, B.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Condensates of colored fermions driving electroweak symmetry breaking could give rise to a light pseudoscalar that would show up in the Higgs search at the LHC. The branching ratios of its decay will distinguish it from the Higgs and illuminate its origin. In particular the colored fermions may be the techniquarks of a one family technicolor theory or the quarks of a strongly interacting fourth family. The former has more difficulties in this context.
description: 8 pages, published version
Additional file 2 of Impact of gallstone disease on the risk of stroke and coronary artery disease: evidence from prospective observational studies and genetic analyses
Creators: name: Zhang, Li
name: Zhang, Wenqiang
name: He, Lin
name: Cui, Huijie
name: Wang, Yutong
name: Wu, Xueyao
name: Zhao, Xunying
name: Yan, Peijing
name: Yang, Chao
name: Xiao, Changfeng
name: Tang, Mingshuang
name: Chen, Lin
name: Xiao, Chenghan
name: Zou, Yanqiu
name: Liu, Yunjie
name: Yang, Yanfang
name: Zhang, Ling
name: Yao, Yuqin
name: Li, Jiayuan
name: Liu, Zhenmi
name: Yang, Chunxia
name: Jiang, Xia
name: Zhang, Ben
Publisher: name: figshare
Year: 2023
Subjects: subject: Genetics
subject: FOS: Biological sciences

description: Additional file 2: Figure S1. Forest plot of pooled relative risk of incident stroke and CAD in participants with GSD. Figure S2. Estimated causal association between cardiovascular diseases and gallstone disease using two-sample Mendelian randomization.
Segmentation of Specular Highlights from Object Surfaces
Creators: name: Wolff, Lawrence B.
Publisher: name: Columbia University
Year: 1988
Subjects: Computer science

description: A major hindrance to image segmentation tasks are the presence of specular highlights on object surfaces. Specular highlights appear on object surfaces where the specular component of reflection from illuminating light sources is so dominant that most detail of the object surface is obscured by a bright region of reflected light. Specular highlights are very common artifacts of most lighting environments and are not part of the intrinsic visible detail of an object surface. As a result, in addition to obscuring visible detail, specular highlight regions of an image can easily deceive image understanding algorithms into interpreting these regions as separate objects or regions on an object with high albedo. Recently, a couple of approaches to identifying specular highlight regions in images of object surfaces have produced some good results using color analysis. Unfortunately these methods work only for dielectric materials (e.g. plastic, rubber etc.) and require that the color of the object be different from the color of the light source. In this paper a technique is presented exploiting the polarization properties of reflected light to identify specular highlight regions. This technique works for both dielectric and metal surfaces regardless of the color of the illuminating light source, or the color detail on the object surface. In addition to separating out diffuse and specular components of reflection, the technique presented here also as a bonus can identify whet her certain image regions correspond to a dielectric or metal object surface. Extensive experimentation will be presented for a variety of dielectric and metal surfaces, both polished and rough. Experimentation with coated surfaces using the technique presented here have not yet been studied.