cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Photo-centric variability of quasars caused by variations in their inner structure: Consequences on Gaia measurements
Creators: name: Popovic, Luka C.
name: Jovanovic, Predrag
name: Stalevski, Marko
name: Anton, Sonia
name: Andrei, Alexandre H.
name: Kovacevic, Jelena
name: Baes, Maarten
Publisher: name: arXiv
Year: 2011
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We study the photocenter position variability due to variations in the quasar inner structure. We consider variability in the accretion disk emissivity and torus structure variability due to different illumination by the central source. We discuss possible detection of these effects by Gaia. Observations of the photocenter variability in two AGNs, SDSS J121855+020002 and SDSS J162011+1724327 have been reported and discussed. With investigation of the variations in the quasar inner structure we explore how much this effect can affect the position determination and whether it can be (or not) detected with Gaia mission. We used (a) a model of a relativistic disk, including the perturbation that can increase brightness of a part of the disk, and consequently offset the photocenter position, and (b) a model of a dusty torus which absorbs and re-emits the incoming radiation from accretion disk. We estimated the value of the photocenter offset due to these two effects. We found that perturbations in the inner structure can significantly offset the photocenter. It depends on the characteristics of perturbation and accretion disk and structure of the torus. In the case of two considered QSOs the observed photocenter offsets cannot be explained by variations in the accretion disk and other effects should be considered. We discussed possibility of exploding stars very close to the AGN source, and also possibility that there are two variable sources in the center of these two AGNs that may indicate a binary super-massive black hole system on a kpc (pc) scale. The Gaia mission seems to be very perspective, not only for astrometry, but also for exploring the inner structure of AGNs. We conclude that variations in the quasar inner structure can affect the observed photocenter (up to several mas). There is a chance to observe such effect in the case of bright and low-redshifted QSOs.
description: 12 pages, 8 figures, 3 tables. Accepted for publication in Astronomy and Astrophysics. Language improved, typos corrected
Accepting but not engaging with it: Digital participation in local government‐run social credit systems in China
Creators: name: Li, Haili
name: Kostka, Genia
Publisher: name: Freie Universität Berlin
Year: 2022
Subjects: subject: awareness
subject: barriers
subject: digital participation
subject: privacy concerns
subject: social credit systems (SCSs)
subject: 300 Sozialwissenschaften::300 Sozialwissenschaften, Soziologie::304 Das Sozialverhalten beeinflussende Faktoren

description: Over the past decade, China's central and municipal governments have consistently supported the development of social credit systems (SCSs). While research has highlighted the Chinese public's high approval and backing of SCSs, their engagement with these digital projects has not been fully explored. Based on 44 semi‐structured interviews, our research examines Chinese citizens' digital participation in government‐run SCSs at the local level. Our findings suggest that, despite perceiving SCSs as accepting and positive, most interviewees do not actively engage with local government‐run SCSs. Multiple factors can explain the gap between the high acceptance and low participation rates, including a lack of awareness regarding local SCSs, a perception that registering and maintaining a decent credit score requires major effort, various concerns involving data privacy and safety, algorithm accuracy and fairness, potential risks, unappealing benefits offered by SCSs, and the voluntary aspect of participating in local SCSs. Our research adds to the existing literature on digital governance in authoritarian contexts by explaining why Chinese citizens do not necessarily engage with state‐promoted digital projects.
SIMD Tree Algorithms for Image Correlation
Creators: name: Ibrahim, Hussein
name: Kender, John R.
name: Shaw, David Elliot
Publisher: name: Columbia University
Year: 1986
Subjects: Computer science

description: This paper examines the applicability of fine-grained tree-structured SIMD machines, which are amenable to highly efficient VLSI implementation to image correlation which is a representative of image window-based operations. Several algorithms are presented for image shifting and correlation operations. A particular massively parallel machine called NON-VON is used for purposes of explication and performance evaluation. Although the most recent version of the NON-VON architecture also supports other interconnection topologies and execution modes, only its tree-structured communication capabilities and its SIMD mode of execution are considered in this paper. Novel algorithmic techniques are described, such as vertical pipelining, subproblem partitioning, associative matching, and data duplication that effectively exploit the massive parallelism available in fine-grained SIMD tree machines while avoiding communication bottlenecks. Simulation results are presented and compared with results obtained or forecast for other highly parallel machines. The relative advantages and limitations of the class of machines under consideration are then outlined.
Improving Database Performance on Simultaneous Multithreading Processors
Creators: name: Zhou, Jingren
name: Cieslewicz, John
name: Ross, Kenneth A.
name: Shah, Mihir
Publisher: name: Columbia University
Year: 2005
Subjects: Computer science

description: Simultaneous multithreading (SMT) allows multiple threads to supply instructions to the instruction pipeline of a superscalar processor. Because threads share processor resources, an SMT system is inherently different from a multiprocessor system and, therefore, utilizing multiple threads on an SMT processor creates new challenges for database implementers. We investigate three thread-based techniques to exploit SMT architectures on memory-resident data. First, we consider running independent operations in separate threads, a technique applied to conventional multiprocessor systems. Second, we describe a novel implementation strategy in which individual operators are implemented in a multi-threaded fashion. Finally, we introduce a new data-structure called a work-ahead set that allows us to use one of the threads to aggressively preload data into the cache for use by the other thread. We evaluate each method with respect to its performance, implementation complexity, and other measures. We also provide guidance regarding when and how to best utilize the various threading techniques. Our experimental results show that by taking advantage of SMT technology we achieve a 30\% to 70\% improvement in throughput over single threaded implementations on in-memory database operations.
Loss of synchronization in complex neuronal networks with delay
Creators: name: Lehnert, Judith
name: Dahms, Thomas
name: Hövel, Philipp
name: Schöll, Eckehard
Publisher: name: arXiv
Year: 2011
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We investigate the stability of synchronization in networks of delay-coupled excitable neural oscillators. On the basis of the master stability function formalism, we demonstrate that synchronization is always stable for excitatory coupling independently of the delay and coupling strength. Superimposing inhibitory links randomly on top of a regular ring of excitatory coupling, which yields a small-world-like network topology, we find a phase transition to desynchronization as the probability of inhibitory links exceeds a critical value. We explore the scaling of the critical value in dependence on network properties. Compared to random networks, we find that small-world topologies are more susceptible to desynchronization via inhibition.
description: 6 pages, 4 figures
Disk Response Time Measurements
Creators: name: Johnson, Thomas D.
name: Jonathan, Smith
name: Wilson, Eric S.
Publisher: name: Columbia University
Year: 1986
Subjects: Computer science

description: This paper describes response time measurements made by inserting tracing code in the UNIXÂ® System device driver for the Digital Equipment Corporation TM (DEC**) RA81 disks attached to a DEC UDA50 controller. The goals and methodology of the measurements are described. Detailed analysis of data derived from the measurements is provided, and some conclusions are drawn about the effect of UNIX file system mechanisms on response times as seen by user processes.
Mycetomoellerius Solomon et al. 2019
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

description: (36) Mycetomoellerius sp. 1 Material examined. COLOMBIA: Antioquia • 1 worker; Amalfi; 06°57′8.02″N, 075°00′48″W; alt. 1020 m; 27 Oct. 1997; F. Sernaleg.; UNAB 5452; Atlántico • 1 worker; Juan de Acosta; 10°46′02″N, 075°02′34″W; alt. 117–250 m; Feb.–May 2012; J. Castro, S. Royero leg.; UNAB 5452; Chocó • 1 worker; Unión Panamericana; 05°21′37.48″N, 076°38′45.35″W; alt. 119 m; 08 May 2001; J. Neita leg.; UNAB 5452; Sucre • 1 worker; Colosó; 09°29′44″N, 075° 23′17″W; alt. 200–700 m; Aug. 2009; G. Mercado leg.; UNAB 5452. Comment. This Mycetomoellerius species represents a new species and needs to be described in the context of a taxonomic revision.
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
The Virtual Device: Expanding Wireless Communication Services Through Service Discovery and Session Mobility
Creators: name: Shacham, Ron
name: Schulzrinne, Henning G.
name: Thakolsri, Srisakul
name: Kellerer, Wolfgang
Publisher: name: Columbia University
Year: 2005
Subjects: Computer science

description: We present a location-based, ubiquitous service architecture, based on the Session Initiation Protocol (SIP) and a service discovery protocol that enables users to enhance the multimedia communications services available on their mobile devices by discovering other local devices, and including them in their active sessions, creating a 'virtual device.' We have implemented our concept based on Columbia University's multimedia environment and we show its feasibility by a performance analysis.
Die Bindung von Cyanid an [FeFe]‐Hydrogenasen stabilisiert die alternative Konfiguration des Protonentransferpfads
Creators: name: Duan, Jifu
name: Hemschemeier, Anja
name: Burr, David J.
name: Stripp, Sven T.
name: Hofmann, Eckhard
name: Happe, Thomas
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Cyanid
subject: Hydrogenase
subject: Protonentransferpfad
subject: Röntgenbeugung
subject: Wasserstoffbrücken
subject: 500 Naturwissenschaften und Mathematik::540 Chemie::540 Chemie und zugeordnete Wissenschaften

description: Hydrogenasen sind H2-umsetzende Metalloenzyme und enthalten katalytische Kofaktoren, deren Eisenionen durch biologisch ungewöhnliche Kohlenmonoxid- (CO) und Cyanid- (CN−) Liganden koordiniert sind. Externes CO und CN−hemmt Hydrogenasen jedoch. Der molekulare Mechanismus der Bindung von CN− an [FeFe]-Hydrogenasen ist unbekannt. In dieser Studie präsentieren wir Kristallstrukturen der mit CN− behandelten [FeFe]-Hydrogenase CpI aus Clostridium pasteurianum. Auf Grund der hohen Auflösung von 1.39 Å können wir die intrinsischen CO- und CN−-Liganden voneinander unterscheiden. Wir zeigen, dass externes CN− die offene Bindestelle des Kofaktors besetzt, an die auch externes CO bindet. Im Gegensatz zu anderen Inhibitoren zeigen die CN−-behandelten Kristalle Konformationsänderungen konservierter Reste des Protonentransferpfads, die einen direkten Austausch von Protonen zwischen den Aminosäuren E279 und S319 ermöglichen. Diese Konformation wurde als notwendig für einen effizienten Protonentransfer vorgeschlagen, doch wurde sie bisher nicht strukturell nachgewiesen.
Creating Characters in a Story-Telling Universe
Creators: name: Lebowitz, Michael
Publisher: name: Columbia University
Year: 1984
Subjects: Computer science
Information science
Literature

description: Extended story generation, i.e., the creation of continuing serials, presents difficult and interesting problems for Artificial Intelligence. We present here the first phase or the development of a program, UNIVERSE, that will ultimately tell extended stories. In particular, alter describing our overall model of story telling, we present a method for creating universes of characters appropriate for extended story generation. This method concentrates on the need to keep story-telling universes consistent and coherent. We also describe the information that must be maintained for characters and interpersonal relationships, and the use of stereotypical information about people to help motivate trait values. The use of historical events for motivation is also described. Finally, we present an example of a character generated by UNIVERSE.
Disparate but not antagonistic: Classes of labour in cotton production in Burkina Faso
Creators: name: Engels, Bettina
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: Africa
subject: Burkina Faso
subject: class analysis
subject: class struggle
subject: classes of labour
subject: cotton
subject: 300 Sozialwissenschaften::320 Politikwissenschaft::320 Politikwissenschaft

description: This paper examines the variety of agrarian classes of labour and the challenges they face in organizing and pursuing their interests. By taking the cotton sector in Burkina Faso as a case study, it analyses how various ‘classes of labour’ organize and mobilize for collective action to raise their claims: poor cotton farmers and workers in the cotton factories. Poor and middle farmers recently came to the fore when they boycotted cotton production in large numbers. The study focusses on the boycott campaign, and more broadly on class struggle and collective action by farmers and workers, on interclass alliances, and on capital's attempts to play the classes of labour against one another. The boycott campaign provides an outstanding case to analyse the interests of the various classes of labour and of opportunities for rural–urban mobilization and alliances across classes of labour. I argue that poor farmers and factory workers along the chain of cotton production can be considered as various classes of labour that are not necessarily antagonistic to one another but, first and foremost, to capital. In order to achieve radical transformation in the agrarian context, what is needed are networks and organizations to establish interclass solidarity and alliances.
Embedded uClinux, the Altera DE2, and the SHIM Compiler
Creators: name: Hsu, Wei-Chung
name: Edwards, Stephen A.
name: Lariviere, David
Publisher: name: Columbia University
Year: 2006
Subjects: Computer science

description: SHIM is a concurrent deterministic language focused on embedded system. Although SHIM has undergone substantial evolution, it currently does not have a code generator for a true embedded environment. In this project, we built an embedded environment that we intend to use as a target for the SHIM compiler. We add the uClinux operating system between hardware devices and software programs. Our long-term goal is to have the SHIM compiler generate both user-space and kernel/module programs for this environment. This project is a first step: we manually explored what sort of code we ultimately want the SHIM compiler to produce. In this report, we provide instructions on how to build and install uClinux into an Altera DE2 board and example programs, including a user-space program, a kernel module, and a simple device driver for the buttons on the DE2 board that includes an interrupt handler.
Colorado water, June 1994
Creators: name: Miller, Shirley
name: Colorado Water Resources Research Institute, Publisher
Publisher: name: Mountain Scholar
Year: 1994
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.
Group Ratio Round-Robin: An O(1) Proportional Share Scheduler
Creators: name: Chan, Wong Chun
name: Nieh, Jason
Publisher: name: Columbia University
Year: 2003
Subjects: Computer science

description: Proportional share resource management provides a flexible and useful abstraction for multiplexing time-shared resources. However, previous proportional share mechanisms have either weak proportional sharing accuracy or high scheduling overhead. We present Group Ratio Round-Robin (GR3), a proportional share scheduler that can provide high proportional sharing accuracy with O(1) scheduling overhead. Unlike many other schedulers, a low-overhead GR3 implementation is easy to build using simple data structures. We have implemented GR3 in Linux and measured its performance against other schedulers commonly used in research and practice, including the standard Linux scheduler, Weighted Fair Queueing, Virtual-Time Round-Robin, and Smoothed Round-Robin. Our experimental results demonstrate that GR3 can provide much lower scheduling overhead and better scheduling accuracy in practice than these other approaches for large numbers of clients.
Physical Object Representation and Generation: A Survey of Programs For Semantic-Based Natural Language Processing
Creators: name: Wasserman, Kenneth
Publisher: name: Columbia University
Year: 1986
Subjects: Computer science

description: This article surveys a portion of the field of natural language processing. The main areas considered are those dealing with representation schemes, particularly work on physical object representation, and generalization processes driven by natural language understanding. The emphasis of this article is on conceptual representation of objects based on the semantic interpretation of natural language input. Six programs serve as case studies for guiding the course of the article. Within the framework of describing each of these programs, several other programs, ideas, and theories that are relevant to the program in focus are presented.
Mycocepurus smithii 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
Insecta
Hymenoptera
Formicidae
Mycocepurus
Mycocepurus smithii

description: (27) Mycocepurus smithii (Forel, 1893) Figure 7E, FMaterial examined. COLOMBIA: Antioquia • 1 work- er; Amalfi; 06°45′42.23″N, 075°05′31.57″W; alt. 983 m; Sep. 2006; M.A. Vanegas leg.; MEFLG 11088; Antioquia • 1 worker; Santafé de Antioquia; 06°33′41″N, 075° 49′54″W; alt. 600 m; 06 Oct. 2000; E. Vergara, F. Ser- na leg.; UNAB 4756; Antioquia • 2 workers; Turbo; 08°05′53″N, 076°43′54″W; alt. 1 m; 15 Sep. 2004; O. Mu- nar leg.; UNAB 4756; Caquetá • 2 workers; Florencia; 01°37′11″N, 075°36′14″W; alt. 300 m; 31 Mar. 2016; F. Ser- na leg.; UNAB 4357; Caquetá • 5 workers; Florencia; 01° 30′4″N, 075°39′42″W; alt. 280 m; Sep. 2017; UNAB leg.; UNAB 4756. Identification. Pronotum with a pair of anterior prono- tal spines, which define the anterior border of a crown of spines on the promesonotum; promesonotal disc lacking spines; lateral pronotal spines high and sharp; and propo- deal spines usually straight (Mackay et al. 2004). Distribution.Mycocepurus smithii is widely distributed throughout Central and South America, extending from Mexico all the way south to Argentina including many Caribbean islands (Kempf 1972; Fernández et al. 1996; Mackay et al. 2004; Rabeling et al. 2011; Franco and Feitosa 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 1217, DOI: 10.15560/16.5.1205, http://zenodo.org/record/4059086
description: {"references": ["Mackay WP, Maes JM, Fernandez PR, Luna G (2004) The ants of North and Central America: the genus Mycocepurus (Hymenoptera: Formicidae). Journal of Insect Science 4 (27): 1 - 7. https: // doi. org / 10. 1093 / jis / 4.1.27", "Kempf WW (1972) Catalogo abreviado das formigas da regiao neotro- pical (Hymenoptera: Formicidae). Studia Entomologica 15: 1 - 344.", "Fernandez F, Baena ML, Palacio EE (1996) Hormigas de Colombia V: el genero Stenamma Westwood. Tacaya 5: 9 - 10.", "Rabeling C, Gonzales O, Schultz TR, Bacci M Jr, Garcia MVB, Ver- haagh M, Ishak HD, Mueller UG (2011) Cryptic sexual popula- tions account for genetic diversity and ecological success in a widely distributed, asexual fungus-growing ant. Proceedings of the National Academy of Sciences 108 (30): 12366 - 12371. https: // doi. org / 10.1073 / pnas. 1105467108", "Franco W, Feitosa RM (2018) First standardized inventory of ants (Hymenoptera: Formicidae) in the natural grasslands of Parana: New records for Southern Brazil. Papeis Avulsos de Zoologia 58: e 20185812. https: // doi. org / 10.11606 / 1807 - 0205 / 2018.58.12"]}
Constraints on split-UED from Electroweak Precision Tests
Creators: name: Flacke, Thomas
name: Pasold, Christian
Publisher: name: arXiv
Year: 2011
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We present strongly improved electroweak precision constraints on the split-UED model. We find that the dominating effect arises from contributions to the muon decay rate by the exchange of even-numbered W-boson Kaluza-Klein modes at tree-level, which so far have not been discussed in the context of UED models. The constraints on the split-UED parameter space are translated into bounds on the mass difference of the first Kaluza-Klein mode of fermions and the lightest Kaluza-Klein mode, which will be tested is the LHC.
description: 4 pages, 2 figures
A Framework for 3D Pushbroom Imaging
Creators: name: Ichimura, Naoyuki
name: Nayar, Shree K.
Publisher: name: Columbia University
Year: 2003
Subjects: Computer science

description: Pushbroom cameras produce one-dimensional images of a scene with high resolution at a high frame-rate. As a result, they provide superior data compared to conventional two-dimensional cameras in cases where the scene of interest can be temporally scanned. In this paper, we consider the problem of recovering the structure of a scene using a set of pushbroom cameras. Although pushbroom cameras have been used to recover scene structure in the past, the algorithms for recovery were developed separately for different camera motions such as translation and rotation. In this paper, we present a general framework of structure recovery for pushbroom cameras with 6 degree-of-freedom motion. We analyze the translation and rotation cases using our framework and demonstrate that several previous results are really special cases of our result. Using this framework, we also show that three or more pushbroom cameras can be used to compute scene structure as well as motion of translation or rotation. We conclude with a set of experiments that demonstrate the use of pushbroom imaging to recover structure from unknown motion.
Penetration Depth of Propylene Glycol, Sodium Fluorescein and Nile Red into the Skin Using Non-Invasive Two-Photon Excited FLIM
Creators: name: Alhibah, Mohammad
name: Kröger, Marius
name: Schanzer, Sabine
name: Busch, Loris
name: Lademann, Jürgen
name: Beckers, Ingeborg
name: Meinke, Martina C.
name: Darvin, Maxim E.
Publisher: name: Charité - Universitätsmedizin Berlin
Year: 2022
Subjects: subject: skin barrier function
subject: stratum corneum
subject: epidermis
subject: drug delivery
subject: skin penetration
subject: penetration pathways
subject: fluorescence lifetime imaging
subject: 600 Technik, Medizin, angewandte Wissenschaften::610 Medizin und Gesundheit::610 Medizin und Gesundheit

description: The stratum corneum (SC) forms a strong barrier against topical drug delivery. Therefore, understanding the penetration depth and pathways into the SC is important for the efficiency of drug delivery and cosmetic safety. In this study, TPT-FLIM (two-photon tomography combined with fluorescence lifetime imaging) was applied as a non-invasive optical method for the visualization of skin structure and components to study penetration depths of exemplary substances, like hydrophilic propylene glycol (PG), sodium fluorescein (NaFl) and lipophilic Nile red (NR) into porcine ear skin ex vivo. Non-fluorescent PG was detected indirectly based on the pH-dependent increase in the fluorescence lifetime of SC components. The pH similarity between PG and viable epidermis limited the detection of PG. NaFl reached the viable epidermis, which was also proved by laser scanning microscopy. Tape stripping and confocal Raman micro-spectroscopy were performed additionally to study NaFl, which revealed penetration depths of approximate to 5 and approximate to 8 mu m, respectively. Lastly, NR did not permeate the SC. We concluded that the amplitude-weighted mean fluorescence lifetime is the most appropriate FLIM parameter to build up penetration profiles. This work is anticipated to provide a non-invasive TPT-FLIM method for studying the penetration of topically applied drugs and cosmetics into the skin.
Paratrachymyrmex phaleratus 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
Hexapoda
Hymenoptera
Formicidae
Paratrachymyrmex
Paratrachymyrmex phaleratus

description: (41) Paratrachymyrmex phaleratus (Wheeler, 1925) Fig. 10E, FMaterial examined. COLOMBIA: Antioquia • 1 work- er; Amalfi; 06°55′00″N, 075°04′00″W; alt. 1010 m; 27 Oct. 1997; F. Sernaleg.; UNAB 5452. Identification. Posterolateral cephalic corner with clearly distinct spine; mid-pronotal teeth present and separated from each other at the base; third pair of me- sonotal spines distinct; and metasternal lamina dorsally rounded (unpublished key by Kempf). Distribution.Paratrachymyrmex phaleratus was previ- ously recorded in Guyana and Venezuela (Wheeler 1925; Mayhé-Nunes and Jaffé 1998), thus our new record for Colombia expands the geographic range of the species to the northwest Andean mountains (Fig. 1D).
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 1223, 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.", "Mayhe-Nunes A, Jaffe K (1998) On the biogeography of Attini (Hyme- noptera: Formicidae). Ecotropicos 11 (1): 45 - 54."]}
A LISP Compiler for the DADO Parallel Computer
Creators: name: Lerner, Mark D.
name: Biema, Michael Van
name: Maguire, Gerald Q.
Publisher: name: Columbia University
Year: 1985
Subjects: Computer science

description: This describes a LISP implementation for the Intel MCS-51 family of microprocessors, the processor used by the DADO parallel computer. This LISP IS the implementation language for the high-level parallel LISP (PPSL). It is based upon the Portable Standard Lisp (PSL) of the University of Utah. By writing PPSL in PSL we have achieved a significant degree of portability.
Branching Ratio and CP Asymmetry of B_s \to K^*_0(1430)πDecays in the PQCD Approach
Creators: name: Zhang, Zhi-Qing
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In the two-quark model supposition for $K_0^{*}(1430)$, the branching ratios and the direct CP-violating asymmetries for decays $\bar B_s^0\to K^{*0}_0(1430)π^0, K^{*+}_0(1430)π^-$ are studied by employing the perturbative QCD factorization approach. We find that although these two decays are both tree-dominated, the ratio of their penguin to tree contributions are very different: there is only a few percent for the decay $\bar B_s^0\to K^{*+}_0(1430)π^-$, while about 37% in scenario I, even 51% in scenario II for the decay $\bar B_s^0\to K^{*0}_0(1430)π^0$. It results that these two decays have very different values in the branching ratios and the direct CP asymmetries. The branching ratio of the decay $\bar B_s^0\to K^{*+}_0(1430)π^-$ is at the order of $10^{-5}$, and its direct CP asymmetry is about (20-30)%. While for the decay $\bar B_s^0\to K^{*0}_0(1430)π^0$, its direct CP-violating asymmetry is very large and about 90%, but it is difficult to measure it, because the branching ratio for this channel is small and only $10^{-7}$ order.
description: 8pages, 2figures
Vegetation complexity and nesting resource availability predict bee diversity and functional traits in community gardens
Creators: name: Felderhoff, Julia
name: Gathof, Anika K.
name: Buchholz, Sascha
name: Egerer, Monika
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: conservation
subject: habitat management; Berlin
subject: pollinators
subject: urban ecosystems
subject: urbanization
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Urban gardens can support diverse bee communities through resource provision in resource poor environments. Yet the effects of local habitat and landscape factors on wild bee communities in cities is still insufficiently understood, nor is how this information could be applied to urban wildlife conservation. Here we investigate how taxonomic and functional diversity of wild bees and their traits in urban community gardens are related to garden factors and surrounding landscape factors (e.g., plant diversity, amount of bare ground, amount of nesting resources, amount of landscape imperviousness). Using active and passive methods in 18 community gardens in Berlin, Germany, we documented 26 genera and 102 species of bees. We found that higher plant species richness and plant diversity as well as higher amounts of deadwood in gardens leads to higher numbers of wild bee species and bee (functional) diversity. Furthermore, higher landscape imperviousness surrounding gardens correlates with more cavity nesting bees, whereas a higher amount of bare ground correlates with more ground‐nesting bees. Pollen specialization was positively associated with plant diversity, but no factors strongly predicted the proportion of endangered bees. Our results suggest that, aside from foraging resources, nesting resources should be implemented in management for more pollinator‐friendly gardens. If designed and managed using such evidence‐based strategies, urban gardens can create valuable foraging and nesting habitats for taxonomically and functionally diverse bee communities in cities.
Generation of Distributed Programming Environments
Creators: name: Kaiser, Gail E.
name: Kaplan, Simon M.
name: Micallef, Josephine
Publisher: name: Columbia University
Year: 1986
Subjects: Computer science

description: This technical report consists of three related papers in the area of distributed programming environments. Incremental Attribute Evaluation in Distributed Language-Based Environments presents algorithms that extend existing technology for the generation of single-user language-based editors from attribute grammars to the cases of multiple-user concurrent and distributed environments. Multi-User Distributed Language-Based Environment, an extended abstract, provides additional information on how to apply the algorithms. Reliability in Distributed Programming Environments presents additional algorithms that extend our results to unreliable networks.
The relationship between self-efficacy beliefs, coping strategies, and performance outcome in junior tennis players
Creators: name: Ling, Andrew Stephen
Publisher: name: Kinesiology
Year: 2008

description: Bibliography: p. 72-80
description: The constructs of self-efficacy (Bandura, 1977, 1997) and coping (Lazarus & Folkman, 1984) are important in regard to sport performance; however, little work has been done in the sport of tennis. The first part of this study was to develop a tennis-specific self-efficacy questionnaire. The second part examined the direct relationships between a) self-efficacy beliefs and performance outcome, and b) coping strategies and performance outcome. Also, there was an interest to see the effect of coping on performance outcome in the presence of self-efficacy. Competitive junior tennis players in Alberta, Nova Scotia, and New Brunswick completed the tennis-specific self-efficacy questionnaire and the Modified-COPE (MCOPE) before their respective tournament. Self-efficacy was a significant predictor of winning percentage. There were also positive relationships between self-efficacy and winning percentage on backhand counterattack, technical anticipation, performance motivation, and outcome motivation. Finally, there was a negative relationship between winning percentage and behavioural disengagement, self-blame, and humor.
MELD/ Features: An Object-Oriented Approach to Reusable Software
Creators: name: Kaiser, Gail E.
name: Garlan, David
Publisher: name: Columbia University
Year: 1986
Subjects: Computer science

description: This technical report consists of three related papers in the area of reusable software. Synthesis of Programming Environments from Reusable Building Blocks presents the notion of 'features' as an approach to reusable descriptions for the generation of programming environments. Composing Software Systems from Reusable Building Blocks presents MELD, a declarative language based on features, and generalizes features to the description of reusable software for general applications. MELD: A Declarative Language for Writing Methods focuses on ~1ELD's capabilities for describing the behavior of software systems.
CINECA Data interoperability documentation D1.4
Creators: name: Spalding
Publisher: name: Zenodo
Year: 2023
Subjects: data access
data interoperability
passports

description: This document describes the standards utilised, and the implementations and deployments of these standards during the CINECA project. It links to the documentation of the standards, as well as the implementations, and deployments supporting the discovery, access control, and metadata required to enable the use cases to perform their respective federated analyses. The document links to other projects, such as the European Genomic Data Infrastructure and H2020 projects which utilise and will extend the work and standards described in this document.
Explanation and Acquisition in Expert Systems Using Support Knowledge
Creators: name: Pasik, Alexander J.
name: Christensen, Jens
name: Gordin, Douglas
name: Stancato, Agata
name: Stolfo, Salvatore
Publisher: name: Columbia University
Year: 1985
Subjects: Computer science

description: There are many criteria that an expert system must meet in order to be considered successful in a domain. An important criterion is that it be able to solve problems in its domain with a satisfactory level of expertise. In addition to this an expert system should also be able to communicate well with its users. This means not only asking for relevant information when needed but also providing explanations of its reasoning process that are acceptable to a user. Furthermore, an expert system should be easily .expandable to incorporate new knowledge or correct outdated or erroneous knowledge.
Immunohistochemical characterization of bipolar cells in four distantly related avian species
Creators: name: Balaji, Vaishnavi
name: Haverkamp, Silke
name: Seth, Pranav Kumar
name: Günther, Anja
name: Mendoza, Ezequiel
name: Schmidt, Jessica
name: Herrmann, Maike
name: Pfeiffer, Leonie Lovis
name: Němec, Pavel
name: Scharff, Constance
name: Mouritsen, Henrik
name: Dedek, Karin
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: AAV virus
subject: bipolar cell
subject: buzzard (Buteo buteo)
subject: chicken (Gallus gallus)
subject: double cone
subject: European robin (Erithacus rubecula)
subject: magnetoreception
subject: pigeon (Columba livia)
subject: retina
subject: 500 Naturwissenschaften und Mathematik::570 Biowissenschaften; Biologie::570 Biowissenschaften; Biologie

description: Visual (and probably also magnetic) signal processing starts at the first synapse, at which photoreceptors contact different types of bipolar cells, thereby feeding information into different processing channels. In the chicken retina, 15 and 22 different bipolar cell types have been identified based on serial electron microscopy and single‐cell transcriptomics, respectively. However, immunohistochemical markers for avian bipolar cells were only anecdotally described so far. Here, we systematically tested 12 antibodies for their ability to label individual bipolar cells in the bird retina and compared the eight most suitable antibodies across distantly related species, namely domestic chicken, domestic pigeon, common buzzard, and European robin, and across retinal regions. While two markers (GNB3 and EGFR) labeled specifically ON bipolar cells, most markers labeled in addition to bipolar cells also other cell types in the avian retina. Staining pattern of four markers (CD15, PKCα, PKCβ, secretagogin) was species‐specific. Two markers (calbindin and secretagogin) showed a different expression pattern in central and peripheral retina. For the chicken and European robin, we found slightly more ON bipolar cell somata in the inner nuclear layer than OFF bipolar cell somata. In contrast, OFF bipolar cells made more ribbon synapses than ON bipolar cells in the inner plexiform layer of these species. Finally, we also analyzed the photoreceptor connectivity of selected bipolar cell types in the European robin retina. In summary, we provide a catalog of bipolar cell markers for different bird species, which will greatly facilitate analyzing the retinal circuitry of birds on a larger scale.
Supernova 1998S at 14 years Postmortem: Continuing Circumstellar Interaction and Dust Formation
Creators: name: Mauerhan, Jon
name: Smith, Nathan
Publisher: name: arXiv
Year: 2012
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: We report late-time spectroscopic observations of the Type IIn SN 1998S, taken 14 years after explosion using the Large Binocular Telescope. The optical spectrum exhibits broad emission features of [O I], [O II], [O III], H-alpha, H-beta, and [Fe II]. The last decade of evolution has exhibited a strengthening of the oxygen transitions, evidence that the late-time emission is powered by increasingly metal-rich SN ejecta crossing the reverse shock. The H-alpha luminosity requires that SN 1998S is still interacting with dense circumstellar material (CSM), probably produced by the strong wind of a red supergiant progenitor at least ~1000 years before explosion. The emission lines exhibit asymmetric blueshifted profiles, which implies that the receding hemisphere of the SN is obscured by dust. The [O III] line, in particular, exhibits a complete suppression of its red wing. This could be the result of the expected wavelength dependence for dust extinction or a smaller radial distribution for [O III]. In the latter case, the red wing of [O III] could be absorbed by core dust, while both the blue and red wings are absorbed by dust within the cool dense shell between the forward and reverse shocks; this interpretation could explain why late-time [O III] emission from SNe is often weaker than models predict. The [O I] line exhibits double-peaked structure on top of the broader underlying profile, possibly due to emission from individual clumps of ejecta or ring-like structures of metal-rich debris. The centroids of the peaks are blueshifted and lack a red counterpart. However, an archival spectrum obtained on day 1093 exhibits a third, redshifted peak, which we suspect has become extinguished by dust that formed over the last decade. This implies that the "missing" red components of multi-peaked oxygen profiles observed in other SNe might be obscured by varying degrees of dust extinction.
description: Accepted to MNRAS on May 16 2012
Dynamic fracture with a continuum‐kinematics‐based peridynamic and a phase‐field approach
Creators: name: Friebertshäuser, Kai
name: Thomas, Marita
name: Tornquist, Sven
name: Weinberg, Kerstin
name: Wieners, Christian
Publisher: name: Freie Universität Berlin
Year: 2023
Subjects: subject: dynamic fracture
subject: continuum-kinematics-based peridynamics
subject: phase-field approach
subject: 500 Naturwissenschaften und Mathematik::510 Mathematik::510 Mathematik

description: The notion of dynamic fracture with continuum‐kinematics‐based peridynamics is presented in this work. A geometrically precise version of peridynamics called continuum‐kinematics‐based peridynamics adds surface‐ or volume‐based interactions to the traditional peridynamic bonds, accurately capturing the finite deformation kinematics. The point families produced from the horizon of the material points are used to construct the surfaces and volumes taken into account for these non‐local interactions. In continuum kinematics‐based peridynamics, the traditional bond‐stretch damage technique is insufficient for fracture. Due to the loss of strength in the internal force densities of the material points, it is now extended to the surface‐ and volume‐based interactions by new failure factors. Numerical examples demonstrate that the proposed approach effectively manages crack propagation, impact damage, and spontaneous crack initiation under dynamic loading circumstances with large deformations. When the results are compared to phase‐field calculations, there is a remarkable agreement concerning the damage patterns.
An Experiment in Intelligent Information Systems: RESEARCHER
Creators: name: Lebowitz, Michael
Publisher: name: Columbia University
Year: 1985
Subjects: Computer science

description: The development of very powerful intelligent information systems will require the use of many Artificial Intelligence techniques including some derived by studying human understanding methods. RESEARCHER is a prototype intelligent information system that reads, remembers, generalizes from and answers questions about complex technical texts, patent abstracts in particular. In this paper, we discuss three areas of current research involving RESEARCHER -- the generalization of hierarchically structured representations; the use of long-term memory in text processing, specifically in resolving ambiguity; and the tailoring of answers to questions to the level of expertise of different users. All of these areas are crucial for truly powerful information systems. We outline our methods and give examples of RESEARCHER processing various examples.
The probability distribution of the number of electron-positron pairs produced in a uniform electric field
Creators: name: Krivoruchenko, M. I.
Publisher: name: arXiv
Year: 2012
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: The probability-generating function of the number of electron-positron pairs produced in a uniform electric field is constructed. The mean and variance of the numbers of pairs are calculated, and analytical expressions for the probability of low numbers of electron-positron pairs are given. A recursive formula is derived for evaluating the probability of any number of pairs. In electric fields of supercritical strength |eE| > πm^2/ \ln 2, where e is the electron charge, E is the electric field, and m is the electron mass, a branch-point singularity of the probability-generating function penetrates the unit circle |z| = 1, which leads to the asymptotic divergence of the cumulative probability. This divergence indicates a failure of the continuum limit approximation. In the continuum limit and for any field strength, the positive definiteness of the probability is violated in the tail of the distribution. Analyticity, convergence, and positive definiteness are restored upon the summation over discrete levels of electrons in the normalization volume. Numerical examples illustrating the field strength dependence of the asymptotic behavior of the probability distribution are presented.
description: 7 pages, REVTeX, 4 figures; new references added; a short version of this e-print has appeared in PRD
Cyphomyrmex laevigatus Weber 1938
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
Cyphomyrmex
Cyphomyrmex laevigatus

description: (23) Cyphomyrmex laevigatus Weber, 1938 Figure 6E, FMaterial examined. COLOMBIA: Caquetá • 1 worker; Florencia; 01°30′9.99″N, 075°36′22″W; alt. 250 m; 28 Sep. 2016; UNAB members leg.; UNAB 4367. Identification. Mesosoma completely unarmed, propodeum in profile evenly rounded; and petiolar node in dor- sal view strikingly transverse, thrice as broad as long (Kempf 1965). Distribution.Cyphomyrmex laevigatus is widely distributed in northern South America, including Bolivia, north- ern Brazil (Amazonas, Maranhão, Mato Grosso, Pará, and Rondônia), Colombia, Ecuador, Paraguay, Perú and Ven- ezuela (Mayhé-Nuñes and Jaffé 1998; Souza 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 1215, DOI: 10.15560/16.5.1205, http://zenodo.org/record/4059086
description: {"references": ["Weber NA (1938) The biology of the fungus-growing ants. Part IV. Additional new forms. Part V. The Attini of Bolivia. Revista de Entomologia 9 (1 - 2): 154 - 206.", "Kempf WW (1965) Arevision of the Neotropical fungus-growing ants of the genus Cyphomyrmex Mayr. Part II. Group of rimosus (Spinola) (Hym. Formicidae). Studia Entomologica 8: 161 - 200.", "Mayhe-Nunes A, Jaffe K (1998) On the biogeography of Attini (Hyme- noptera: Formicidae). Ecotropicos 11 (1): 45 - 54.", "Souza JLP, Baccaro FB, Pequeno PACL, Franklin E, Magnusson WE (2018) Effectiveness of genera as a higher-taxon substitute for spe- cies in ant biodiversity analyses is not affected by sampling tech- nique. Biodiversity and Conservation 27 (13): 3425 - 3445. https: // doi. org / 10.1007 / s 10531 - 018 - 1607 - x"]}