cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Hamiltonian chaos with a cold atom in an optical lattice
Creators: name: Prants, S. V.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Quantum Gases (cond-mat.quant-gas)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We consider a basic model of the lossless interaction between a moving two-level atom and a standing-wave single-mode laser field. Classical treatment of the translational atomic motion provides the semiclassical Hamilton-Schrodinger equations which are a 5D nonlinear dynamical system with two integrals of motion. The atomic dynamics can be regular or chaotic in dependence on values of the control parameters, the atom-field detuning and recoil frequency. We develop a semiclassical theory of the chaotic atomic transport in terms of a random walk of the atomic electric dipole moment $u$. Based on a jump-like behavior of this variable for atoms crossing nodes of the standing wave, we construct a stochastic map that specifies the center-of-mass motion. We find the relations between the detuning, recoil frequency and the atomic energy, under which atoms may move in a optical lattice in a chaotic way. We obtain the analytical conditions under which deterministic atomic transport has fractal properties and explain a hierarchical structure of the dynamical fractals. Quantum treatment of the atomic motion in a standing wave is studied in the dressed state picture where the atom moves in two optical potentials simultaneously. If the values of the detuning and a characteristic atomic frequency are of the same order, than there is a probability of nonadiabatic transitions of the atom upon crossing nodes of the standing wave. At the same condition exactly, we observe sudden jumps in the atomic dipole moment $u$ when the atom crosses the nodes. Those jumps are accompanied by splitting of atomic wave packets at the nodes. Such a proliferation of wave packets at the nodes of a standing wave is a manifestation of classical atomic chaotic transport. At large values of the detuning, the quantum evolution is shown to be adiabatic in accordance with a regular character of the classical atomic motion.
description: arXiv admin note: substantial text overlap with arXiv:quant-ph/0701038
Sociotechnical Assessment Of Risks In The Use Of Business Analytics
Creators: name: Müller, Jonas
name: Hermes, Gina
name: Hoeborn, Gerrit
name: Stich, Volker
Publisher: name: Hannover : publish-Ing.
Year: 2023
Subjects: subject: Konferenzschrift
subject: Business Analytics
subject: Risk Assessment
subject: Risks
subject: Sociotechnical
subject: Type-specific
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: The use of Business Analytics (BA) helps to improve the quality of decisions and reduces reaction latencies, especially in uncertain and volatile market situations. This expectation leads a continuously rising number of companies to make large investments in BA. The successful use of Business Analytics is increasingly becoming a differentiator. At the same time, the use of BA is not trivial, rather, it is subject to high socio-technical requirements. If these are not addressed, high risks arise that stand in the way of successful use. In particular, it is important to consider the risks in relation to the different types of BA in a differentiated way. So far, there is a lack of suitable approaches in the literature to consider these type-specific risks with regard to the socio-technical dimensions: people, technology, and organization. This paper addresses this gap by initially identifying risks in the use of Business Analytics. For this purpose, possible risks are identified using a systematic literature review and verified with a Delphi survey with various partners experienced in dealing with BA. Subsequently, the identified and validated risks are assigned to three different types of Business Analytics (Descriptive, Predictive and Prescriptive Analytics) and assessed in order to systematically address and reduce the risks. The result of this paper is an overview of the interactions between the socio-technically assigned risks, summarized in a risk catalog, and the different types of Business Analytics.
Neuroprotective effects of ketone bodies during hypoglycemia
Creators: name: Schutz, Peter W.
Publisher: name: University of British Columbia
Year: 2011

description: The ketone body D-3-hydroxybutyrate (3OHB) is an alternative energy substrate for the brain during hypoglycemia. The capacity and limitations of 3OHB to compensate for cerebral glucose depletion in developing brain is insufficiently understood. We studied the effect of 3OHB treatment in a newly developed infant rat model of insulin induced, sustained, and EEG-controlled hypoglycemia. Continuous treatment with 3OHB during hypoglycemia resulted in increased 3OHB plasma levels in hypoglycemic animals and delayed the onset of clinical coma and of EEG burst-suppression (burst-suppression coma). 3OHB treated animals did not survive after resuscitation with glucose, compared to 80% survival of untreated hypoglycemic pups. Cleaved-caspase-3 immunohistochemistry and double labelling studies demonstrated a 20-fold increase of apoptotic mature oligodendrocytes in white matter of 3OHB treated animals, indicating a limited protective effect of 3OHB treatment. In contrast to glucose, D-3-hydroxybutyrate is not an anaplerotic substrate. Anaplerosis plays in important role in cerebral glutamate glutamine metabolism. Combination of D-3-hydroxybutyrate with the anaplerotic substrate propionate could enhance its protective effect during hypoglycemia. We compared the effectiveness of treatment with a single dose D-3-hydroxybutyrate alone or combined with propionate at the time of EEG burst-suppression coma. Both treatments resulted in a reversion of EEG activity from burst suppression to continuity, but only combined treatment resulted in clincal improvement of the comatose state. 3OHB alone largely corrected pathometabolic changes of glutamate metabolism but not of glycolytic and pentose phosphate pathway intermediates or of long chain acylcarnitines. Combined treatment was not associated with biochemical corrections over and above those achieved by 3OHB alone for the metabolites measured. 3OHB treatment has a limited effectiveness on clinical and neuropathology outcome after hypoglycemia in infant rats. The limited effectiveness of 3OHB treatment may be related to its inability to support glycolysis with associated pentose phosphate pathway and anaplerotic activity. Combined treatment with propionate enhances 3OHB’s protective effect during hypoglycemic coma. Future protective treatment should be based on complementary metabolic substrates.
A Multi-resolution Block Storage Model for Database Design
Creators: name: Zhou, Jingren
name: Ross, Kenneth A.
Publisher: name: Columbia University
Year: 2003
Subjects: Computer science

description: We propose a new storage model called MBSM (Multi-resolution Block Storage Model) for laying out tables on disks. MBSM is intended to speed up operations such as scans that are typical of data warehouse workloads. Disk blocks are grouped into "super-blocks", with a single record stored in a partitioned fashion among the blocks in a super-block. The intention is that a scan operation that needs to consult only a small number of attributes can access just those blocks of each super-block that contain the desired attributes. To achieve good performance given the physical characteristics of modern disks, we organize super-blocks on the disk into fixed-size "mega-blocks". Within a mega-block, blocks of the same type (from various super-blocks) are stored contiguously. We describe the changes needed in a conventional database system to manage tables using such a disk organization. We demonstrate experimentally that MBSM outperforms competing approaches such as NSM (N-ary Storage Model), DSM (Decomposition Storage Model) and PAX (Partition Attributes Across), for I/O bound decision-support workloads consisting of scans in which not all attributes are required. This improved performance comes at the expense of single-record insert and delete performance; we quantify the trade-offs involved. Unlike DSM, the cost of reconstructing a record from its partitions is small. MBSM stores attributes in a vertically partitioned manner similar to PAX, and thus shares PAX's good CPU cache behavior. We describe methods for mapping attributes to blocks within super-blocks in order to optimize overall performance, and show how to tune the super-block and mega-block sizes.
Retrofitting Autonomic Capabilities onto Legacy Systems
Creators: name: Parekh, Janak J.
name: Kaiser, Gail E.
name: Gross, Philip N.
name: Valetto, Giuseppe
Publisher: name: Columbia University
Year: 2003
Subjects: Computer science

description: Autonomic computing - self-configuring, self-healing, self-optimizing applications, systems and networks - is a promising solution to ever-increasing system complexity and the spiraling costs of human management as systems scale to global proportions. Most results to date, however, suggest ways to architect new software constructed from the ground up as autonomic systems, whereas in the real world organizations continue to use stovepipe legacy systems and/or build 'systems of systems' that draw from a gamut of disparate technologies from numerous vendors. Our goal is to retrofit autonomic computing onto such systems, externally, without any need to understand, modify or even recompile the target system's code. We present an autonomic infrastructure that operates similarly to active middleware, to explicitly add autonomic services to pre-existing systems via continual monitoring and a feedback loop that performs, as needed, reconfiguration and/or repair. Our lightweight design and separation of concerns enables easy adoption of individual components, independent of the rest of the full infrastructure, for use with a large variety of target systems. This work has been validated by several case studies spanning multiple application domains.
A study of the zero modes of the Faddeev-Popov operator in Euclidean Yang-Mills theories in the Landau gauge in d=2,3,4 dimensions
Creators: name: Capri, M. A. L.
name: Guimaraes, M. S.
name: Sorella, S. P.
name: Tedesco, D. G.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Examples of normalizable zero modes of the Faddeev-Popov operator in SU(2) Euclidean Yang-Mills theories in the Landau gauge are constructed in d=2,3,4 dimensions.
description: 18 pages. Text modifications. References added. Version accepted for publication in the EPJC
Projecting XML Documents
Creators: name: Marian, Amelie
name: Simeon, Jerome
Publisher: name: Columbia University
Year: 2003
Subjects: Computer science

description: XQuery is not only useful to query XML in databases, but also to applications that must process XML documents as files or streams. These applications suffer from the limitations of current main-memory XQuery processors which break for rather small documents. In this paper we propose techniques, based on a notion of projection for XML, which can be used to drastically reduce memory requirements in XQuery processors. The main contribution of the paper is a static analysis technique that can identify at compile time which parts of the input document are needed to answer an arbitrary XQuery. We present a loading algorithm that takes the resulting information to build a projected document, which is smaller than the original document, and on which the query yields the same result. We implemented projection in the Galax XQuery processor. Our experiments show that projection reduces memory requirements by a factor of 20 on average, and is effective for a wide variety of queries. In addition, projection results in some speedup during query evaluation.
A Cognitive Assistance System To Support The Implementation Of Machine Learning Applications In Manufacturing
Creators: name: Rosemeyer, Jannik
name: Beck, Laurenz
name: Metternich, Joachim
Publisher: name: Hannover : publish-Ing.
Year: 2023
Subjects: subject: Konferenzschrift
subject: Machine Learning
subject: Operator 4.0
subject: Cognitive assistance system
subject: Shop floor manager
subject: Vocational education
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Despite the increasing spread of digitalisation in manufacturing, humans will still play an important role in future production environments. Evidently, their role will change from physical to rather cognitive tasks, such as decision-making or control and monitoring of processes. A suitable medium that can support employees in interpreting the data generated are machine learning (ML) applications. Nevertheless, recent studies show that the knowledge required to implement an ML solution is not available in a large number of companies. In order to close the knowledge gap and subsequently prepare human operators for the implementation and use of ML applications, it is highly relevant to provide proper assistance. For this reason, the present publication aims to develop a cognitive assistance system that supports shop floor managers in implementing ML use cases in manufacturing (referred to as CAS-ML). The CAS-ML concretizes a previously published procedure model with additional steps as well as learning material and is realized as a software thereupon. Finally, the CAS-ML is evaluated by operative employees and tested on an open-source data set.
Generating Natural Language Summaries from Multiple On-Line Sources: Language Reuse and Regeneration
Creators: name: Radev, Dragomir R.
Publisher: name: Columbia University
Year: 1999
Subjects: Computer science

description: The abundance of news wire on the World-Wide Web has resulted in at least four major problems, which seem to present the most interesting challenges to users and researchers alike: size,heterogeneity, change, and conflicting information. Size: several hundred newspapers and news agencies maintain their Web sites with thousands of news stories in each. Heterogeneity: some of the data related to news is in structured format (e.g., tables); more exists in semi-structured format (e.g.,Web pages, encyclopedias, textual databases); while the rest of the data is in textual form (e.g., newswire). Change: most Web sites and certainly all news sources change on a daily basis. Disagreement: different sources present conflicting or at least different views of the same event. We have approached the second, third, and fourth of these four problems from the point of view of text generation. We have developed a system, {\scsummons}, which when coupled with appropriate information extraction technology, generates a specific genre of natural language summaries of a particular event (which we call briefings) in a restricted domain. The briefings are concise, they contain facts from multiple and heterogeneous sources, and incorporate evolving information, highlighting agreements and contradictions among sources on the same topic. We have developed novel techniques and algorithms for combining data from multiple sources at the conceptual level (using natural language understanding), for identifying new information on a given topic; and for presenting the information in natural language form to the user. We named the framework that we have developed for these problems {\em language reuse and regeneration} (LRR). Its novelty lies in the ability to produce text by collating together text already written by humans on the Web. The main features of LRR are: increased robustness through a simplified parsing/generation component, leverage on text already written by humans, and facilities for the inclusion of structured data in computer-generated text. The present thesis contains an introduction to LRR and its use inmulti-document summarization. We have paid special attention to the techniquesfor producing conceptual summaries of multiple sources, to the creation and useof a LRR-based lexicon for text generation, to a methodology used to identifynew and old information in threads of documents, and to the generation offluent natural language text using all the components above. The thesis contains evaluations of the different components of {\sc summons} aswell as certain aspects of LRR as a methodology. A review of the relevantliterature is included as a separate chapter.
Apterostigma goniodes Lattke 1997
Creators: name: Mera-Rodríguez, Daniela
name: Serna, Francisco
name: Sosa-Calvo, Jeffrey
name: Lattke, John
name: Rabeling, Christian
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Apterostigma
Apterostigma goniodes

description: (8) Apterostigma goniodes Lattke, 1997 Figure 3G, HMaterial examined. COLOMBIA: Antioquia • 5 work- ers; Santafé de Antioquia; 06°33′41″N, 075°49′54″W; alt. 600 m; 06 Oct. 2000; E. Vergara, F. Sernaleg.; UNAB 4772; Antioquia • 2 workers; Santafé de Antioquia; 06° 33′41″N, 075°49′54″W; alt. 600 m; 06 Oct. 2000; E. Ver- gara, F. Sernaleg.; UNAB 4772; Sucre • 1 worker; Co- losó; 09°29′44″N, 075°23′17″W; alt. 200–700 m; 30 Aug. 2009; G. Mercado leg.; UNAB 4741; Sucre • 2 workers; Colosó; 09°29′44″N, 075°23′17″W; alt. 200–700 m; 29 Aug. 2009; G. Mercado leg.; UNAB 4741. Identification. Frontal lobes in frontal view triangular, each posterior margin forms an (almost) right angle with the lateral margin; ventral mesopleural carina well-de- veloped and lamelliform; and longitudinal translucent keel present on the postpetiolar sternite (Lattke 1997). Distribution.Apterostigma goniodes is distributed from southern Mexico throughout Central America to Colom- bia (Lattke 1997; Castro et al. 2018; García-Cárdenas et al. 2018).
description: Published as part of Mera-Rodríguez, Daniela, Serna, Francisco, Sosa-Calvo, Jeffrey, Lattke, John & Rabeling, Christian, 2020, A checklist of the non-leaf-cutting fungus-growing ants (Hymenoptera, Formicidae) from Colombia, with new biogeographic records, pp. 1205-1227 in Check List 16 (5) on page 1211, DOI: 10.15560/16.5.1205, http://zenodo.org/record/4059086
description: {"references": ["Lattke JE (1997) Revision del genero Apterostigma Mayr: (Hymenoptera: Formicidae). Arquivos de Zoologia 34 (5): 121 - 221. https: // doi. org / 10.11606 / issn. 2176 - 7793. v 34 i 5 p 121 - 221", "Castro D, Fernandez F, Meneses AD, Tocora MC, Sanchez S, Pena- Venegas CP (2018) Apreliminary checklist of soil ants (Hyme- noptera: Formicidae) of Colombian Amazon. Biodiversity Data Journal 6: e 29278. https: // doi. org / 10.3897 / BDJ. 6. e 29278", "Garcia-Cardenas R, Montoya-Lerma J, Armbrecht I (2018) Ant diver- sity under three coverages in a Neotropical coffee landscape. Re- vista de Biologia Tropical 66 (4): 1373 - 1389. https: // doi. org / 10. 15517 / rbt. v 66 i 4.30610"]}
Colorado water, April 2005
Creators: name: Blumanhourst, Gloria
name: Colorado Water Resources Research Institute, Publisher
Publisher: name: Mountain Scholar
Year: 2005
Subjects: subject: Water resources development -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Colorado
subject: Water-supply -- Management -- Colorado

description: The scope of the newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the research universities in the state.
description: Newsletter of the Water Center of Colorado State University.
A comparative case study of two urban Aboriginal children's meaning making across home, school, and community contexts
Creators: name: Streelasky, Jodi Lyn
Publisher: name: University of British Columbia
Year: 2011

description: In the field of early childhood literacy, researchers have begun to investigate the ways contemporary childhoods are being shaped by a range of multimodal communicative practices (Kress, 2003; Lankshear & Knobel, 2003; Marsh, 2003b). The link between children’s use of these practices, many of which are linked to digital technologies and global discourses, and their identity construction, is also being examined in the new millennium. The changing communication systems of the twenty-first century are also influencing the ways urban Aboriginal children make meaning in their worlds, and are impacting Aboriginal children’s identities. Drawing on a sociocultural theory of learning, the purpose of this qualitative comparative case study is to investigate the complexity of the everyday communicative practices utilized by two, six-year-old urban Aboriginal children in and out-of-school, in an attempt to inform the future direction of literacy curricula for young Aboriginal children. Acquiring insight into Aboriginal children’s meaning making is also vital to challenging and replacing long-standing deficit notions held by society and mainstream schools about Aboriginal students’ inferiority and ineducability. This is particularly relevant as the urban Aboriginal student population rises in the province of Saskatchewan. The findings revealed the focal children’s homes to be vibrant, multimodal textual spaces in which the children were supported by their family members as they engaged in a range of communicative practices for multiple purposes. The findings also revealed the link between the dynamic and evolving nature of Indigenous knowledge and the families’ meaning making. Further, the findings showed how the practices valued and promoted in the focal children’s classroom generally reflected traditional and narrow modes of communication, specifically, print-based and teacher-directed practices, and also included superficial, rudimentary aspects of Aboriginal culture. This study offers new suggestions on the ways in which Aboriginal children’s out-of-school communicative practices, specifically those practices linked to digital technology, can be included in early childhood classrooms in culturally-relevant ways.
Holographic Quantum Quench
Creators: name: Das, Sumit R.
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We discuss recent results in the study of the evolution of strongly coupled field theories in the presence of time dependent couplings using the holographic correspondence. The aim is to understand (i) thermalization and (ii) universal behavior when the coupling crosses a critical point. Our emphasis is on situations where a subset of bulk fields can be treated in a probe approximation. We consider two different setups. In the first, defect conformal field theories are described by probe branes in AdS space-times, and an initial vacuum state evolves due to a time dependent coupling in the probe sector. While a black hole formation is invisible in this approximation, we show that thermalization can nevertheless happen - this is signalled by formation of apparent horizons on the brane worldvolume. In the second setup, we consider a probe bulk scalar field in the background of a AdS black brane. In equilibrium, this system undergoes a critical phase transition at some temperature when the source for the dual operator vanishes. For a time dependent source which goes across this critical point, we show that a zero mode of the bulk field dominates the dynamics and leads to scaling behavior of the order parameter as a function of the rate of change.
description: Based on talks at 11th Workshop on Non-perturbative QCD (Paris, June 2011), Sixth Crete Regional Meeting on String Theory (Milos, June 2011) and Quantum Theory and Symmetries 7 (Prague, August 2011)
Cascading Scenario Technique Enabling Automated And Situation-based Crisis Management
Creators: name: Leachu, Stefan
name: Janßen, Jokim
name: Gdanitz, Natalie
name: Kirchhöfer, Merlit
name: Janzen, Sabine
name: Stich, Volker
Publisher: name: Hannover : publish-Ing.
Year: 2023
Subjects: subject: Konferenzschrift
subject: Crisis Management
subject: Supply Chain
subject: Humanitarian Logistics
subject: Scenario Technique
subject: Scenario Pattern
subject: Operations Planning
subject: Resource deployment
subject: Knowledge Representation
subject: Dewey Decimal Classification::600 | Technik::620 | Ingenieurwissenschaften und Maschinenbau

description: Crises are becoming more and more frequent. Whether natural disasters, economic crises, political events, or a pandemic - the right action mitigates the impact. The PAIRS project plans to minimize the surprise effect of these and to recommend appropriate actions based on data using artificial intelligence (AI). This paper conceptualizes a cascading model based on scenario technique, which acts as the basic approach in the project. The long-term discipline of scenario technique is integrated into the discipline of crisis management to enable short-term and continuous crises management in an automated manner. For this purpose, a practical crisis definition is given and interpreted as a process. Then, a cascading model is derived in which crises are continuously thought through using the scenario technique and three types of observations are classified: Incidents, disturbances, and crises. The presented model is exemplified within a non-technical application of a use case in the context of humanitarian logistics and the COVID-19 pandemic. Furthermore, first technical insights from the field of AI are given in the form of a semantic description composing a knowledge graph. In summary, a conceptual model is presented to enable situation-based crisis management with automated scenario generation by combining the two disciplines of crisis management with scenario technique.
Extracting Relations from Large Plain-Text Collections
Creators: name: Agichtein, Eugene
name: Gravano, Luis
Publisher: name: Columbia University
Year: 1999
Subjects: Computer science

description: Text documents often contain valuable structured data that is hidden in regular English sentences. This data is best exploited if available as a relational table that we could use for answering precise queriesor for running data mining tasks. We explore a technique for extracting such tables from document collections that requires only a handful of training examples from users. These examples are used to generate extraction patterns,that in turn result in new tuples being extracted from the document collection. We build on this idea and present our Snowball system. Snowball introduces novel strategies for generating patterns and extracting tuples from plain-text documents. At each iteration of the extraction process, Snowball evaluates the quality of these patterns and tuples without human intervention,In this paper we also develop a scalable evaluation methodology and metrics for our task, and present a thorough experimental evaluation of Snowball and comparable techniques over a collection of more than 300,000 newspaper documents.
Optimizing Selections over Data Cubes
Creators: name: Ross, Kenneth A.
name: Zaman, Kazi A.
Publisher: name: Columbia University
Year: 1998
Subjects: Computer science

description: Datacube queries compute aggregates over data base relations at a variety of granularities, and they constitute an important class of decision support queries. Often one wants only datacube output tuples whose aggregate value satisfies a certain condition, such as exceeding a given threshold. For example, one might ask for all combinations of model, color, and year of cars(including the special value "ALL" for each of the dimensions) for which the total sales exceeded a given amount of money. Computing a selection over a datacube can naively be done by computing the entire datacube and checking if the selection condition holds for each tuple in the result. However, it is often the case that selections are relatively restrictive, meaning that a lot of work computing datacube tuples is "wasted" since those tuples don't satisfy the selection condition. Our approach is to develop algorithms for processing a datacube query using the selection condition internally during the computation. By making use of the selection condition within the datacube computation,we can safely prune parts of the computation and end up with a more efficient computation of the answer. Our first technique, called"specialization", uses the fact that a tuple in the datacube does not meet the given threshold to infer that all finer level aggregates cannot meet the threshold. We propose a scheme of specialization transformations on the underlying data sets, using properties of the aggregates and threshold functions. Our second technique is called "generalization", and applies in the case where the actual value of the aggregate is not needed in the output,but used just to compare with the threshold. Generalization uses the fact that a tuple meets the given threshold to infer that all coarser level aggregates also meet the threshold. We also propose a scheme of generalization transformations. We demonstrate the efficiency of these techniques by implementing them within the sparse datacube algorithm of Ross and Srivastava. We present a performance study using synthetic and real-world data sets.Our results indicate substantial performance improvements for queries with selective conditions.
Optimal symmetric Tardos traitor tracing schemes
Creators: name: Laarhoven, Thijs
name: de Weger, Benne
Publisher: name: arXiv
Year: 2011
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences
subject: 68P30, 94B60

description: For the Tardos traitor tracing scheme, we show that by combining the symbol-symmetric accusation function of Skoric et al. with the improved analysis of Blayer and Tassa we get further improvements. Our construction gives codes that are up to 4 times shorter than Blayer and Tassa's, and up to 2 times shorter than the codes from Skoric et al. Asymptotically, we achieve the theoretical optimal codelength for Tardos' distribution function and the symmetric score function. For large coalitions, our codelengths are asymptotically about 4.93% of Tardos' original codelengths, which also improves upon results from Nuida et al.
description: 16 pages, 1 figure
Maser Emission toward the Infrared Dark Cloud G359.94+0.17 Seen in Silhouette against the Galactic Center
Creators: name: Deguchi, S.
name: Tafoya, D.
name: Shino, N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The infrared dark cloud G359.94+0.17 is a conspicuous, opaque cloud, which is seen in silhouette against the Galactic center. We found unexpectedly strong (~50 Jy) maser emission of CH3OH at 44 GHz with additional weak 22 GHz H2O maser and 43 GHz SiO thermal emissions toward this cloud. Detections of these molecular lines indicate that strong star forming activities are proceeding in this cloud, which were not reported previously despite of numerous works toward the Galactic center. The line profiles of the NH3 inversion lines at 23 GHz indicate that G359.94+0.17 is composed of mainly two clouds with V(lsr)= 0, and 15 km/s overlapped on the line of sight. The maser emission is associated with the 15 km/s cloud, suggesting that it is located at the Norma spiral arm.
description: PASJ 64, no2 (April 25, 2012 issue) in press
The relationships of solar flares with both sunspot and geomagnetic activity
Creators: name: Du, Z. L.
name: Wang, H. N.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: The relationships between solar flare parameters (total importance, time duration, flare index, and flux) and sunspot activity (Rz) as well as those between geomagnetic activity (aa index) and the flare parameters can be well described by an integral response model with the response time scales of about eight and thirteen months, respectively. Compared with linear relationships, the correlation coefficients of the flare parameters with Rz, of aa with the flare parameters, and of aa with Rz based on this model have increased about 6%, 17%, and 47% on average, respectively. The time delays of the flare parameters to Rz, of aa to the flare parameters, and of aa to Rz at their peaks in solar cycle can be predicted in part by this model (82%, 47%, and 78%, respectively). These results may be further improved when using a cosine filter with a wider window. It implies that solar flares are related to the accumulation of solar magnetic energies in the past through a time decay factor. The above results may help to understand the mechanism of the solar cycle and to improve the solar flare prediction.
description: 9 pages, 6 figures, accepted for publication in RAA (Res. Astron. Astrophys.)
Apterostigma auriculatum Wheeler 1925
Creators: name: Mera-Rodríguez, Daniela
name: Serna, Francisco
name: Sosa-Calvo, Jeffrey
name: Lattke, John
name: Rabeling, Christian
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Apterostigma
Apterostigma auriculatum

description: (2) Apterostigma auriculatum Wheeler, 1925 Figure 2C, DMaterial examined. COLOMBIA: Antioquia • 1 worker; Amalfi; 06°54′11″N, 075°05′26.7″W; alt. 1045 m; 20 Apr. 1998; F. Sernaleg.; UNAB 4361. Identification. Eyes relatively big and prominent (more than nine ommatidia along the shortest axis); frontal lobes subquadrate in full-face view, anterior margin of clypeus concave, lacking shiny cuticular strip; neck relatively long and broad, lacking median carina; hu- meral prominence in dorsal view shaped as angular lobe; ventral mesopleural carina in lateral view fine; and pet- iole in lateral view triangular, with antero- and posterodorsal profiles almost of same length (Lattke 1997). Distribution. This species occurs from Honduras to Mato Grosso do Sul in Brazil and is widely distributed throughout central and northwestern South America (Lattke 1997; Fernández and Sendoya 2004).
description: Published as part of Mera-Rodríguez, Daniela, Serna, Francisco, Sosa-Calvo, Jeffrey, Lattke, John & Rabeling, Christian, 2020, A checklist of the non-leaf-cutting fungus-growing ants (Hymenoptera, Formicidae) from Colombia, with new biogeographic records, pp. 1205-1227 in Check List 16 (5) on page 1208, DOI: 10.15560/16.5.1205, http://zenodo.org/record/4059086
description: {"references": ["Wheeler WM (1925) Neotropical ants in the collections of the Royal Museum of Stockholm. Part I. Arkiv for zoologi 17 A (8): 1 - 55.", "Lattke JE (1997) Revision del genero Apterostigma Mayr: (Hymenoptera: Formicidae). Arquivos de Zoologia 34 (5): 121 - 221. https: // doi. org / 10.11606 / issn. 2176 - 7793. v 34 i 5 p 121 - 221", "Fernandez F, Sendoya S (2004) Synonymic list of Neotropical ants (Hymenoptera: Formicidae). Biota Colombiana 5 (1): 3 - 105."]}
Colorado water, February 1993
Creators: name: Miller, Shirley
name: Colorado Water Resources Research Institute, Publisher
Publisher: name: Mountain Scholar
Year: 1993
Subjects: subject: Water resources development -- Colorado
subject: Water-supply -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Management -- Colorado

description: The scope of the newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the research universities in the state.
description: Newsletter of the Colorado Water Resources Research Institute.
SUMCASTEC_190201_NA_BangorWSPres_Workshop Presentation_.pdf_Limoges_S. Saada_Public_NA
Creators: name: S. Saada
name: B. Bessette
name: G. Begau
name: S. Battu
name: F. Lalloue
Publisher: name: Zenodo
Year: 2019

description: Presentation given by Dr Sofiane Saada at the workshop on EM field interaction with biological tissues for cancer and regenerative medicine held in Bangor, UK on July 13th 2018. The presentation is entitled "Isolation and characterization of Cancer Stem Cells (CSCs): One question many answers ..."
description: Abstract of the talk: The cancer stem cell (CSC) concept was proposed since decades to explain treatment resistance and tumor recurrences. It is currently admitted the presence of the CSCs in many tumors. CSCs are subpopulation of cells present in the heterogeneous tumor mass in specific tumoral niches. The presence of CSCs explains the clinical observations of tumor recurrences after supposed successful therapies (chemo- and/or radiotherapies). The acknowledge of CSCs properties, including plasticity, quiescence and auto-renewal is in perpetual increase. Despite the techniques evolutions, their identification, isolation and characterization are still very difficult. CSC identification is based on the presence of set of cell-undifferentiated biological markers such as CD133, CD44 and some transcription factors Oct4, Sox2, Nanog... however, these markers are common to the normal stem cells, and are unable to specifically isolate CSCs. Even, using isolation of CSCs based on CD133 positive cells is the most frequently used strategy, using this unique marker is still controversial, and its efficiency is not completely admitted. Since their presence carries the aggressiveness character and properties of many human tumors, their identification and isolation are critical in future therapeutic strategies of tumor eradication.
What Is the Complexity of Stieltjes Integration?
Creators: name: Werschulz, Arthur G.
Publisher: name: Columbia University
Year: 1998
Subjects: Computer science

description: We study the complexity of approximating the Stieltjes integral ∫ 0^1 f(x)dg(x) for functions ƒ having r continuous derivatives and functions g whose sth derivative has bounded variation. Let r(n) denote the nth minimal error attainable by approximations using at most~n evaluations of ƒ and g, and let comp(ε) denote the ε-complexity (the minimal cost of computing an ε-approximation). We show that r(n) ≍ n^{-min{r,s+1}} and that comp(ε) ≍ ε^{-1/min{r,s+1}}. We also present an algorithm that computes an ε-approximation at nearly-minimal cost.
An operator-theoretic existence proof of solutions to planar Dirichlét problems
Creators: name: McNicholl, Timothy H.
Publisher: name: arXiv
Year: 2011
Subjects: subject: Complex Variables (math.CV)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 31, 47

description: By using some elementary techniques from operator theory, we prove constructively prove the existence of solutions to Dirichlét problems for planar Jordan domains with at least two boundary curves. An iterative method is thus obtained, and explicit bounds on the error in the resulting approximations are given. Finally, a closed form for the solution is given. No amount of differentiability of the boundary is assumed.
Mycetomoellerius urichii Forel 1893
Creators: name: Mera-Rodríguez, Daniela
name: Serna, Francisco
name: Sosa-Calvo, Jeffrey
name: Lattke, John
name: Rabeling, Christian
Publisher: name: Zenodo
Year: 2020
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Hexapoda
Hymenoptera
Formicidae
Mycetomoellerius
Mycetomoellerius urichii

description: (35) Mycetomoellerius urichii (Forel, 1893) Figure 9C, DMaterial examined. COLOMBIA: Cesar • 1 worker; Valledupar; 10°23′17″N, 073°14′11″W; alt. 250 m; Mar. 2011; Y. Dominguez leg.; UNAB. Identification. Head square, as wide as long; mandibles subopaque smooth and sparsely punctuated at apex, in- distinctly denticulate at the terminal border; median pro- notal spines tuberculated; lateral pronotal spines slender and with small tubercles; mesonotum with four tubercu- lated spines; and propodeal spines robust and with small tubercles (Forel 1893; Fernández and Serna 2019). Distribution.Mycetomoellerius urichii is present in Colombia, French Guiana, Guyana, the Lesser Antilles, Pa- nama, Suriname, Venezuela, and much of Brazil (Bahia, Goiás, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Santa Catarina, São Paulo, Rio de Janeiro, and Tocan- tins) (Kempf 1972; Fernández and Sendoya 2004).
description: Published as part of Mera-Rodríguez, Daniela, Serna, Francisco, Sosa-Calvo, Jeffrey, Lattke, John & Rabeling, Christian, 2020, A checklist of the non-leaf-cutting fungus-growing ants (Hymenoptera, Formicidae) from Colombia, with new biogeographic records, pp. 1205-1227 in Check List 16 (5) on page 1221, DOI: 10.15560/16.5.1205, http://zenodo.org/record/4059086
description: {"references": ["Fernandez F, Serna F (2019) Subfamilia Myrmicinae. In: Fernandez F, Guerrero R, Delsinne T (Eds) Hormigas de Colombia. Universi- dad Nacional de Colombia, Bogota, 791 - 885.", "Kempf WW (1972) Catalogo abreviado das formigas da regiao neotro- pical (Hymenoptera: Formicidae). Studia Entomologica 15: 1 - 344.", "Fernandez F, Sendoya S (2004) Synonymic list of Neotropical ants (Hymenoptera: Formicidae). Biota Colombiana 5 (1): 3 - 105."]}
Automated Visual Discourse Synthesis: Coherence, Versatility, and Interactivity
Creators: name: Zhou, Michelle X.
Publisher: name: Columbia University
Year: 1997
Subjects: Computer science

description: In this proposal, we present comprehensive and systematic approaches of building systems that can automatically generate coherent visual discourse for interactive environments. A visual discourse refers to a series of connected visual displays. A coherent visual discourse requires smooth transitions between displays, consistent designs within and among displays, and effective integration of various components. While our main research goal is to develop approaches to automatically create coherent, versatile, and interactive visual discourse, we also emphasize integrating these approaches into a general framework to provide a reference model in which a specific system is considered an instantiation of the framework. In other words, the framework should consist of a knowledge base, an inference engine, a visual realizer, and an interaction handler. As a consequence, not only can a general framework serve as a template from which a specific generation system can be instantiated,but the framework also can be used as a base for comparing or evaluating different systems. We concentrate on the basic issues involved in developing comprehensive and systematic approaches to ensure a visual discourse's coherence, versatility, and interactivity. In particular, To ensure coherence, we have established a set of comprehensive design criteria to measure both expressiveness and effectiveness of a visual discourse. To provide versatility, we address the design of visual discourse for heterogeneous information. Within such discussions, heterogeneous information refers to both quantitative and qualitative, or static and dynamic information. In addition, we are also concerned with characterizing and employing different visual media and a wide variety of visual techniques. To support interaction, we integrate many conventional user interface metaphors and styles into visual discourse design and explore reactive planning approaches to provide proper response to user interactions. To establish the framework, we identify various knowledge sources and determine effective knowledge representation paradigms in constructing the knowledge base. We emphasize the efficiency, usability, and flexibility issues in modeling the inference engine. We are concerned with portability and parallelization issues in building the visual realizer, and we also take into account interaction capabilities for interactive environments. We describe a system called IMPROVISE (Illustrative Metaphor Production in Reactive Object-oriented VISual Environments) that serves as a proof-of-concept prototype. IMPROVISE is built based on our framework, aiming to automatically generate coherent visual discourse for various application domains in interactive environments. IMPROVISE has been used in two testbed application domains to demonstrate its generality and flexibility. Examples from both domains will be given to illustrate IMPROVISE's generation process and to identify the future research areas.
SOAP. A tool for the fast computation of photometry and radial velocity induced by stellar spots
Creators: name: Boisse, I.
name: Bonfils, X.
name: Santos, N. C.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We define and put at the disposal of the community SOAP, Spot Oscillation And Planet, a software tool that simulates the effect of stellar spots and plages on radial velocimetry and photometry. This paper describes the tool release and provides instructions for its use. We present detailed tests with previous computations and real data to assess the code's performance and to validate its suitability. We characterize the variations of the radial velocity, line bisector, and photometric amplitude as a function of the main variables: projected stellar rotational velocity, filling factor of the spot, resolution of the spectrograph, linear limb-darkening coefficient, latitude of the spot, and inclination of the star. Finally, we model the spot distributions on the active stars HD166435, TW Hya and HD189733 which reproduces the observations. We show that the software is remarkably fast allowing several evolutions in its capabilities that could be performed to study the next challenges in the exoplanetary field connected with the stellar variability.
description: 9 pages, 12 figures, 4 tables, accepted for publication in A&A
Colorado water, October 1993
Creators: name: Miller, Shirley
name: Colorado Water Resources Research Institute, Publisher
Publisher: name: Mountain Scholar
Year: 1993
Subjects: subject: Water resources development -- Colorado
subject: Water-supply -- Colorado
subject: Water use -- Colorado
subject: Water-supply -- Management -- Colorado

description: The scope of the newsletter is devoted to enhancing communication between Colorado water users and managers and faculty at the research universities in the state.
description: Newsletter of the Colorado Water Resources Research Institute.
Influence of steps on the tilting and adsorption dynamics of ordered Pn films on vicinal Ag(111) surfaces
Creators: name: Mete, E.
name: Demiroglu, I.
name: Albayrak, E.
name: Bracco, G.
name: Ellialtioglu, S.
name: Danisman, M. F.
Publisher: name: arXiv
Year: 2012
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Here we present a structural study of pentacene (Pn) thin films on vicinal Ag(111) surfaces by He atom diffraction measurements and density functional theory (DFT) calculations supplemented with van der Waals (vdW) interactions. Our He atom diffraction results suggest initial adsorption at the step edges evidenced by initial slow specular reflection intensity decay rate as a function of Pn deposition time. In parallel with the experimental findings, our DFT+vdW calculations predict the step edges as the most stable adsorption site on the surface. An isolated molecule adsorbs as tilted on the step edge with a binding energy of 1.4 eV. In addition, a complete monolayer (ML) with pentacenes flat on the terraces and tilted only at the step edges is found to be more stable than one with all lying flat or tilted molecules, which in turn influences multilayers. Hence our results suggest that step edges can trap Pn molecules and act as nucleation sites for the growth of ordered thin films with a crystal structure similar to that of bulk Pn.
description: 4 pages, 4 figures, 1 table