cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Tragopogon pratensis subsp. minor Hartm.
Creators: name: Konrad Lauber
name: Gerhart Wagner
name: Andreas Gygax
Publisher: name: Haupt Verlag
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Tragopogon
Tragopogon pratensis
Tragopogon pratensis subsp. minor (mill.) hartm.

description: Tragopogon pratensis subsp. minor (Mill.) Hartm.
Artbeschreibung: Kopfdurchmesser 2-4 cm. Blüten bis in den frühen Nachmittag geöffnet, hellgelb, höchstens 2/3 so lang wie die Hüllblätter, diese anfangs rötlich berandet. Staubbeutel braun. Frucht mit Schnabel nur 1,2-1,8 cm lang, randliche auf den Rippen stachelig.
Blütezeit: 5-7
Standort und Verbreitung in der Schweiz: Wegränder, Kiesflächen, Waldschläge / kollin(-montan) / JN, M, VS
Verbreitung global: Mitteleuropäisch
Ökologische Zeigerwerte nach Landolt & al. (2010)
BodenfaktorenKlimafaktorenSalztoleranzFeuchtezahl F--Lichtzahl L--Salzzeichen--Reaktionszahl R--Temperaturzahl T--Nährstoffzahl N--Kontinentalitätszahl K--
Volksname Deutscher Name: Kleiner Wiesen-Bocksbart Nom français: Petit salsifis
description: Published as part of Konrad Lauber, Gerhart Wagner & Andreas Gygax, 2018, Flora Helvetica - Asteraceae, pp. 1074-1250 in Flora Helvetica, Bern :Haupt Verlag on page 1116
Association Between Neighborhood Factors and Adult Obesity in Shelby County, Tennessee: Geospatial Machine Learning Approach
Creators: name: Brakefield, Whitney S
name: Olusanya, Olufunto A
name: Shaban-Nejad, Arash
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: Obesity is a global epidemic causing at least 2.8 million deaths per year. This complex disease is associated with significant socioeconomic burden, reduced work productivity, unemployment, and other social determinants of Health (SDoH) disparities. Objective: The objective of this study was to investigate the effects of SDoH on obesity prevalence among adults in Shelby County, Tennessee, USA using a geospatial machine-learning approach. Obesity prevalence was obtained from publicly available CDC 500 cities database while SDoH indicators were extracted from the U.S. Census and USDA. We examined the geographic distributions of obesity prevalence patterns using Getis-Ord Gi* statistics and calibrated multiple models to study the association between SDoH and adult obesity. Also, unsupervised machine learning was used to conduct grouping analysis to investigate the distribution of obesity prevalence and associated SDoH indicators. Results depicted a high percentage of neighborhoods experiencing high adult obesity prevalence within Shelby County. In the census tract, median household income, as well as the percentage of individuals who were black, home renters, living below the poverty level, fifty-five years or older, unmarried, and uninsured, had a significant association with adult obesity prevalence. The grouping analysis revealed disparities in obesity prevalence amongst disadvantaged neighborhoods. More research is needed that examines linkages between geographical location, SDoH, and chronic diseases. These findings, which depict a significantly higher prevalence of obesity within disadvantaged neighborhoods, and other geospatial information can be leveraged to offer valuable insights informing health decision-making and interventions that mitigate risk factors for increasing obesity prevalence.
description: 12 Pages, 3 Figures, 5 Tables
Using query frequencies in tree-based revocation for certificateless authentication in VANETs
Creators: name: Caballero-Gil, Pino
name: Martín-Fernández, Francisco
name: Caballero-Gil, Cándido
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Revocation of dishonest users is not an easy problem. This paper proposes a new way to manage revocation of pseudonyms in vehicular ad-hoc networks when using identity-based authentication to increase efficiency and security through certificateless authentication. In order to improve the performance of revocation lists, this paper proposes the use of a data structure based on authenticated dynamic hash k-ary trees and the frequency with which revoked pseudonyms are consulted. The use of the knowledge about the frequency of consultation of revoked pseudonyms allows an easier access to the most popular revoked pseudonyms to the detriment of revoked pseudonyms that are the least consulted. Accordingly, the proposal is especially useful in urban environments where there are vehicles that spend more time on road than others, such as public service vehicles.
D6.5.: E-Cam Software Platform Iii
Creators: name: O'Cais, Alan
name: Mendonça, Ana
Publisher: name: Zenodo
Year: 2018

description: Update on E-CAM software tools and platforms jointly by CH and Juelich which

includes:

- the E-CAM library of software modules and interfaces;

- end users portal (to access E-CAM’s resources, make requests for software developments, register for events);

- web infrastructure for teaching tools.
RFID authentication protocol based on a novel EPC Gen2 PRNG
Creators: name: Caballero-Gil, Pino
name: Caballero-Gil, Cándido
name: Molina-Gil, Jezabel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Continuous advances of Information Technologies (ITs), and in particular of the RFID technologies that allow the connection between the physical world objects and the IT infrastructure, have guaranteed the improvement and efficiency of industrial technologies in the last decades. This paper includes the proposal of two new schemes for RFID. On the one hand, it describes the internals of a lightweight Pseudo-Random Number Generator (PRNG) suitable for low resource devices such as passive RFID complying with the EPC Gen2 specifications. On the other hand, a new secure mutual authentication protocol for such RFID devices that uses the proposed PRNG is presented. The design of the proposed PRNG is based on a nonlinear filter of a Linear Feedback Shift Register (LFSR), and the authentication protocol is lightweight. Both schemes fulfill all practical requirements of low-cost RFID such as resource limitation of EPC Gen2 tags. This is thanks to that only simple computation modules such as the proposed LFSR-based pseudorandom generator and bitwise operations are required. The combination of both proposals guarantees at the same time low power consumption and secure features such as authentication, confidentiality and anonymity.
Analysis of lightweight cryptographic solutions for authentication in IoT
Creators: name: Hernández-Goya, MC
name: Caballero-Gil, Pino
Publisher: name: arXiv
Year: 2022
Subjects: subject: Cryptography and Security (cs.CR)
subject: FOS: Computer and information sciences

description: Currently, special attention is being paid to scenarios where the interconnection of devices with heterogeneous computational and communication capabilities it is required. It is essential to integrate security services during the stages of design and deployment of these networks since many of these scenarios provide critical services such as medical health, payment systems, military affairs, access control, e-banking, etc. This work analyses several cryptographic primitives related to entity authentication providing robust solutions according to device capabilities.
Probing cosmic string spacetime through parameter estimation
Creators: name: Yang, Ying
name: Jing, Jiliang
name: Tian, Zehua
Publisher: name: arXiv
Year: 2022
Subjects: subject: Quantum Physics (quant-ph)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: Quantum metrology studies the ultimate precision limit of physical quantities by using quantum strategy. In this paper we apply the quantum metrology technologies to the relativistic framework for estimating the deficit angle parameter of cosmic string spacetime. We use a two-level atom coupled to electromagnetic fields as the probe and derive its dynamical evolution by treating it as an open quantum system. We estimate the deficit angle parameter by calculating its quantum Fisher information(QFI). It is found that the quantum Fisher information depends on the deficit angle, evolution time, detector initial state, polarization direction, and its position. We then identify the optimal estimation strategies, i.e., maximize the quantum Fisher information via all the associated parameters, and therefore optimize the precision of estimation. Our results show that for different polarization cases the QFIs have different behaviors and different orders of magnitude, which may shed light on the exploration of cosmic string spacetime.
description: 11 pages, 6 figures
Tragopogon pratensis subsp. orientalis Celak.
Creators: name: Konrad Lauber
name: Gerhart Wagner
name: Andreas Gygax
Publisher: name: Haupt Verlag
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Tragopogon
Tragopogon pratensis
Tragopogon pratensis subsp. orientalis (l.) celak.

description: Tragopogon pratensis subsp. orientalis (L.) Čelak.
Artbeschreibung: Kopfdurchmesser 5-8 cm. Blüten nur vormittags geöffnet, goldgelb, meist länger als die Hüllblätter. Diese weisslich-grün berandet. Staubbeutel gelb, mit 5-8 braunen Längsstreifen. Frucht mit Schnabel 2-2,5 cm lang, randliche stachelig.
Blütezeit: 5-7
Standort und Verbreitung in der Schweiz: Fettwiesen / kollin-montan(-subalpin) / CH
Verbreitung global: Ursprünglich eurasiatisch
Ökologische Zeigerwerte nach Landolt & al. (2010)
BodenfaktorenKlimafaktorenSalztoleranzFeuchtezahl F--Lichtzahl L--Salzzeichen--Reaktionszahl R--Temperaturzahl T--Nährstoffzahl N--Kontinentalitätszahl K--
Volksname Deutscher Name: Östlicher Wiesen-Bocksbart Nom français: Salsifis d'orient
description: Published as part of Konrad Lauber, Gerhart Wagner & Andreas Gygax, 2018, Flora Helvetica - Asteraceae, pp. 1074-1250 in Flora Helvetica, Bern :Haupt Verlag on page 1116
DSM-MoC as Baseline: Reliability Assurance via Redundant Cellular Connectivity in Connected Cars
Creators: name: Obiodu, Emeka
name: Raman, Aravindh
name: Abubakar, Abdullahi
name: Mangiante, Simone
name: Sastry, Nishanth
name: Aghvami, Hamid
Publisher: name: arXiv
Year: 2022
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: Connected Cars (CCs) and vehicle-to-everything (V2X) use cases require stringent reliability for safety and non-safety uses. With increasing network softwarisation, it has become easier to use multiple, redundant connectivity options instead of relying on a single network connectivity. But where should these redundant connections be managed? Is it at a network provider's core network - i.e. supply side managed (SSM) - or at the CC - i.e. demand side managed (DSM)? In our work, we investigate the use of SSM and DSM for CCs on four separate days and across 800 kilometers of major / minor roads in South East England. For Day 1, we captured performance indicators, and determined hypothetical multi-operator configurations for four UK providers and a global Universal SIM. For Day 2, 3& 4, we built and deployed a test-bed to actually implement network switching and understand performance (incl. for TCP & UDP) either on the road or in a stationary location. Based on our results, we make three contributions. First, we show that DSM can deliver superior performance for CCs more than any individual network (up to 28 percentage points in a hypothetical scenario), or SSM which had up to 4.8x longer page load times. Second, unlike other smartphone-only studies, our system-level study demonstrates that improvements of at least 12% can be obtained in a practical DSM field implementation for a CC. Third, we confirm that the advantage of DSM in a field implementation is higher for UDP traffic (23% better latency) compared to TCP (13%).
Tripleurospermum inodorum Sch. Bip.
Creators: name: Konrad Lauber
name: Gerhart Wagner
name: Andreas Gygax
Publisher: name: Haupt Verlag
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Tripleurospermum
Tripleurospermum inodorum

description: Tripleurospermum inodorum (L.) Sch. Bip.
Artbeschreibung: 15-60(-90) cm hoch, kaum aromatisch, meist kahl, oft braunrot überlaufen. Blätter 2-3fach fiederschnittig, mit linealen, unterseits gefurchten Zipfeln, ungestielt, meist kahl. Blütenköpfe einzeln, Durchmesser 2,5-5 cm. Zungenblüten weiss, 1-2 cm lang, Röhrenblüten gelb. Keine Spreublätter. Blütenboden nicht hohl. Früchte ca. 2 mm lang, seitlich und innen mit je einer hellen Längsrippe, ohne Pappus.
Blütezeit: 6-7
Standort und Verbreitung in der Schweiz: Äcker, Schuttplätze / kollin-subalpin / CH
Verbreitung global: Ursprünglich nordwesteuropäisch
Ökologische Zeigerwerte nach Landolt & al. (2010)
BodenfaktorenKlimafaktorenSalztoleranzFeuchtezahl F--Lichtzahl L--Salzzeichen--Reaktionszahl R--Temperaturzahl T--Nährstoffzahl N--Kontinentalitätszahl K--
Volksname Deutscher Name: Geruchlose Strandkamille Nom français: Camomille inodore Nome italiano: Camomilla senza odore
description: Published as part of Konrad Lauber, Gerhart Wagner & Andreas Gygax, 2018, Flora Helvetica - Asteraceae, pp. 1074-1250 in Flora Helvetica, Bern :Haupt Verlag on page 1116
Spectrograph design for the Asgard/BIFROST spectro-interferometric instrument for the VLTI
Creators: name: Chhabra, Sorabh
name: Frangiamore, Michele
name: Kraus, Stefan
name: Bianco, Andrea
name: Garzon, Francisco
name: Monnier, John
name: Mortimer, Daniel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The BIFROST instrument will be the first VLTI instrument optimised for high spectral resolution up to R=25,000 and operate between 1.05 and 1.7 $μ$m. A key component of the instrument will be the spectrograph, where we require a high throughput over a broad bandwidth. In this contribution, we discuss the four planned spectral modes (R=50, R=1000, R=5000, and R=25,000), the key spectral windows that we need to cover, and the technology choices that we have considered. We present our plan to use Volume Phase Holographic Gratings (VPHGs) to achieve a high efficiency $>$ 85%. We present our preliminary optical design and our strategies for wavelength calibration.
description: SPIE conference proceedings 2022
Tussilago farfara L.
Creators: name: Konrad Lauber
name: Gerhart Wagner
name: Andreas Gygax
Publisher: name: Haupt Verlag
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Tussilago
Tussilago farfara

description: Tussilago farfara L.
Artbeschreibung: Zur Blütezeit 5-15 cm, später bis 30 cm hoch, einköpfig. Stängel mit oft bräunlichen Blattschuppen. Grundständige Blätter nach der Blüte erscheinend, herzförmig, lang gestielt, Spreite bis über 20 cm lang, flachbuchtig gezähnt, jung beidseits graufilzig, später Oberseite verkahlend. Leitbündel im Blattstielquerschnitt auf einer U-förmigen Linie (vgl. Petasites). Zungen- und Röhrenblüten gelb. Früchte 3-5 mm lang, zylindrisch, mit ca. 10 mm langem, weissborstigem Pappus.
Blütezeit: (2-)3-4(-5)
Standort und Verbreitung in der Schweiz: Wegränder, Rutschhänge, Schuttplätze / kollin-subalpin(-alpin) / CH
Verbreitung global: Eurasiatisch
Ökologische Zeigerwerte nach Landolt & al. (2010)
BodenfaktorenKlimafaktorenSalztoleranzFeuchtezahl FfeuchtLichtzahl LhellSalzzeichen--Reaktionszahl Rneutral bis basisch (pH 5.5-8.5)Temperaturzahl Tmontan (Wälder mit Buche, Weisstanne, in den Zentralalpen mit Waldföhre)Nährstoffzahl Nmässig nährstoffarm bis mässig nährstoffreichKontinentalitätszahl Ksubozeanisch bis subkontinental (mittlere Luftfeuchtigkeit, mässige Temperaturschwankungen und mässig tiefe Wintertemperaturen)
Volksname Deutscher Name: Huflattich, Zytröseli Nom français: Tussilage, Pas d'âne Nome italiano: Tossilagine comune
description: Published as part of Konrad Lauber, Gerhart Wagner & Andreas Gygax, 2018, Flora Helvetica - Asteraceae, pp. 1074-1250 in Flora Helvetica, Bern :Haupt Verlag on page 1116
TOʻQ QIZIL EXINATSIYA XOMASHYOSI ASOSIDA PERKOLYATSIYA USULIDA NASTOYKA OLISH
Creators: name: Nishonboev, J.A.
name: Zuparova, Z.A.
name: Ismoilova, G.M.
Publisher: name: Zenodo
Year: 2024

description: Exinatsiya turkumi oʻsimliklari xalq tabobati va zamonaviy tibbiyotda   immunomodulyator sifatida oʻnlab yillar davomida keng qoʻllanilmoqda. Ogʻzi zich yopiladigan shisha idishga 300,0 g, 3 mm kattalikda maydalangan va changdan tozalangan toʻq qizil exinatsiya ildizi va ildizpoyasi solinib, ustiga 500 ml 40% li etil spirtidan solindi va aralashtirilib, boʻktirish uchun xona haroratida 4 soatga qoldirildi [1].
Willemetia stipitata Dalla Torre
Creators: name: Konrad Lauber
name: Gerhart Wagner
name: Andreas Gygax
Publisher: name: Haupt Verlag
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Willemetia
Willemetia stipitata

description: Willemetia stipitata (Jacq.) Dalla Torre
Artbeschreibung: 15-40 cm hoch. Stängel mit 1-2 Blättern und 1-5 Blütenköpfen, oben wie die Hüllen dicht abstehend schwarz behaart, dazwischen fein weissfilzig. Grundständige Blätter länglich verkehrt-eiförmig, buchtig gezähnt bis ganzrandig, kahl oder zerstreut behaart. Blüten gelb, zungenförmig. Hülle 10-12 mm lang. Früchte mit dem Schnabel 8-10 mm lang, Schnabel länger als die eigentliche Frucht, diese oben mit kleinen Schuppen, Pappus weiss, mit rauen, aber nicht federigen Borsten.
Blütezeit: 7-8
Standort und Verbreitung in der Schweiz: Nasse Wiesen, Flachmoore / montan-subalpin / ME, ANE, ANZ, GR, nördliches TI, BO
Verbreitung global: Mittel- und südeuropäisch
Ökologische Zeigerwerte nach Landolt & al. (2010)
BodenfaktorenKlimafaktorenSalztoleranzFeuchtezahl Fnass; Feuchtigkeit mässig wechselnd (± 1-2 Stufen)Lichtzahl LhellSalzzeichen--Reaktionszahl Rschwach sauer bis neutral (pH 4.5-7.5)Temperaturzahl Tunter-subalpin und ober-montanNährstoffzahl Nmässig nährstoffarm bis mässig nährstoffreichKontinentalitätszahl Ksubozeanisch (hohe Luftfeuchtigkeit, geringe Temperaturschwankungen, eher milde Winter)
Volksname Deutscher Name: Kronlattich Nom français: Calycocorsus des marais Nome italiano: Lattugaccio palustre
description: Published as part of Konrad Lauber, Gerhart Wagner & Andreas Gygax, 2018, Flora Helvetica - Asteraceae, pp. 1074-1250 in Flora Helvetica, Bern :Haupt Verlag on page 1116
Speckle simulation tool for automated modelling of a large range of telescope aperture to fried parameter ratios
Creators: name: Chhabra, Sorabh
name: Kohok, Abhay A.
name: Joshi, Bhushan S.
name: Ramprakash, A. N.
name: Rajarshi, Chaitanya V.
name: Bhandare, Rani S.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The Speckle Imager via MUlti Layer Atmospheric Turbulence Object Reconstructor (SIMULATOR) is a lab-based testbed instrument developed to test for speckle correlation-based techniques in the optical regime. However, this instrument can be used as a testbed against post-processing techniques or algorithms like lucky imaging, phase diversity method etc. The SIMULATOR can emulate 3D atmospheric turbulence behaviour using a three-layer turbulence screen, giving the user command over important site characteristics like wind profile, global fried parameter, global isoplanatic patch, mid-layer and high-layer height effects etc. This testbed is unique in that it can mimic a broad range of site and telescope characteristics accurately without the need for manual intervention or tuning of parameters. The current version can handle a Field of View (FoV) of up to $0.3^{\circ}$, bandwidth ranges from 4860 to 6560 nm and can cover atmospheric turbulence heights up to 83 km.
description: SPIE conference proceedings 2022
Xanthium orientale subsp. italicum Greuter
Creators: name: Konrad Lauber
name: Gerhart Wagner
name: Andreas Gygax
Publisher: name: Haupt Verlag
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Xanthium
Xanthium orientale
Xanthium orientale subsp. italicum (moretti) greuter

description: Xanthium orientale subsp. italicum (Moretti) Greuter
Artbeschreibung: Ähnlich wie X. strumarium, aber Stängel mit kleinen braunen Flecken, weibliche Köpfe zur Fruchtzeit 20-30 mm lang, braun (bei X. strumarium graugrün, oft rot überlaufen), die hakigen Stacheln 4-6 mm lang, Hülle dazwischen steifhaarig, kaum drüsig (bei X. strumarium kurzhaarig und drüsig), die 2 Schnäbel an der Spitze des Kopfes hakig gekrümmt.
Blütezeit: 7-10
Standort und Verbreitung in der Schweiz: Wegränder, Schuttplätze, Flussufer / kollin / TI, sonst selten adventiv
Verbreitung global: Ursprünglich amerikanisch?
Ökologische Zeigerwerte nach Landolt & al. (2010)
BodenfaktorenKlimafaktorenSalztoleranzFeuchtezahl Fmässig feucht; Feuchtigkeit mässig wechselnd (± 1-2 Stufen)Lichtzahl LhellSalzzeichen1Reaktionszahl Rschwach sauer bis neutral (pH 4.5-7.5)Temperaturzahl Tsehr warm-kollin (nur an wärmsten Stellen, Hauptverbreitung in Südeuropa)Nährstoffzahl Nsehr nährstoffreich bis überdüngtKontinentalitätszahl Ksubozeanisch bis subkontinental (mittlere Luftfeuchtigkeit, mässige Temperaturschwankungen und mässig tiefe Wintertemperaturen)
Volksname Deutscher Name: Italienische Spitzklette Nom français: Lampourde d'Italie Nome italiano: Nappola italiana
description: Published as part of Konrad Lauber, Gerhart Wagner & Andreas Gygax, 2018, Flora Helvetica - Asteraceae, pp. 1074-1250 in Flora Helvetica, Bern :Haupt Verlag on page 1116
Designing a 3D Parallel Memory-Aware Lattice Boltzmann Algorithm on Manycore Systems
Creators: name: Fu, Yuankun
name: Song, Fengguang
Publisher: name: arXiv
Year: 2022
Subjects: subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Data Structures and Algorithms (cs.DS)
subject: FOS: Computer and information sciences

description: Lattice Boltzmann method (LBM) is a promising approach to solving Computational Fluid Dynamics (CFD) problems, however, its nature of memory-boundness limits nearly all LBM algorithms' performance on modern computer architectures. This paper introduces novel sequential and parallel 3D memory-aware LBM algorithms to optimize its memory access performance. The introduced new algorithms combine the features of single-copy distribution, single sweep, swap algorithm, prism traversal, and merging two temporal time steps. We also design a parallel methodology to guarantee thread safety and reduce synchronizations in the parallel LBM algorithm. At last, we evaluate their performances on three high-end manycore systems and demonstrate that our new 3D memory-aware LBM algorithms outperform the state-of-the-art Palabos software (which realizes the Fuse Swap Prism LBM solver) by up to 89%.
Xanthium spinosum L.
Creators: name: Konrad Lauber
name: Gerhart Wagner
name: Andreas Gygax
Publisher: name: Haupt Verlag
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Xanthium
Xanthium spinosum

description: Xanthium spinosum L.
Artbeschreibung: 15-80 cm hoch, verzweigt. Stängel kurz behaart, gelblich, unter den Blättern mit 1,5-2,5 cm langen, 3teiligen gelben Stacheln. Blätter 3lappig oder ungeteilt, ganzrandig, unterseits weissfilzig. Blütenköpfe eingeschlechtig, männliche 4-5 mm lang, gelblich, vielblütig, einzeln oder geknäuelt in oberen Blattwinkeln, weibliche 8-15 mm lang in tieferen Blattwinkeln, mit nur 2 kronenlosen Blüten, ihre Hülle wie bei X. strumarium.
Blütezeit: 7-9
Standort und Verbreitung in der Schweiz: Hecken, Schuttplätze / kollin / Vereinzelt VS, VD, SG, SH, AG
Verbreitung global: Ursprünglich südamerikanisch
Ökologische Zeigerwerte nach Landolt & al. (2010)
BodenfaktorenKlimafaktorenSalztoleranzFeuchtezahl Fmässig trockenLichtzahl LhellSalzzeichen1Reaktionszahl Rschwach sauer bis neutral (pH 4.5-7.5)Temperaturzahl Twarm-kollinNährstoffzahl Nsehr nährstoffreich bis überdüngtKontinentalitätszahl Ksubkontinental (niedrige relative Luftfeuchtigkeit, grosse Temperaturschwankungen, eher kalte Winter)
Volksname Deutscher Name: Dornige Spitzklette Nom français: Lampourde épineuse Nome italiano: Nappola spinosa
description: Published as part of Konrad Lauber, Gerhart Wagner & Andreas Gygax, 2018, Flora Helvetica - Asteraceae, pp. 1074-1250 in Flora Helvetica, Bern :Haupt Verlag on page 1116
Xanthium strumarium L.
Creators: name: Konrad Lauber
name: Gerhart Wagner
name: Andreas Gygax
Publisher: name: Haupt Verlag
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Xanthium
Xanthium strumarium

description: Xanthium strumarium L.
Artbeschreibung: 30-120 cm hoch, mit kurzen Zweigen, kurz behaart. Stängel graugrün, ohne Stacheln und Flecken. Blätter herzförmig bis 3eckig-3lappig, unregelmässig gezähnt, beidseits grün, lang gestielt. Blütenköpfe eingeschlechtig, männliche 5-6 mm lang, vielblütig, einzeln oder geknäuelt in oberen Blattwinkeln, weibliche 12-18 mm lang, eiförmig, in tieferen Blattwinkeln, mit nur 2 kronenlosen Blüten. Hülle mit 2-3 mm langen, hakigen Stacheln, an der Spitze mit 2 geraden Schnäbeln (umgebildete Spreublätter).
Blütezeit: 7-10
Standort und Verbreitung in der Schweiz: Wegränder, Schuttplätze, Flussufer / kollin / CH vereinzelt
Verbreitung global: Ursprünglich eurasiatisch?
Ökologische Zeigerwerte nach Landolt & al. (2010)
BodenfaktorenKlimafaktorenSalztoleranzFeuchtezahl Fmässig feucht; Feuchtigkeit mässig wechselnd (± 1-2 Stufen)Lichtzahl LhellSalzzeichen1Reaktionszahl Rschwach sauer bis neutral (pH 4.5-7.5)Temperaturzahl Twarm-kollinNährstoffzahl Nsehr nährstoffreich bis überdüngtKontinentalitätszahl Ksubozeanisch bis subkontinental (mittlere Luftfeuchtigkeit, mässige Temperaturschwankungen und mässig tiefe Wintertemperaturen)
Volksname Deutscher Name: Kropf-Spitzklette, Gemeine Spitzklette Nom français: Lampourde ordinaire Nome italiano: Nappola minore
description: Published as part of Konrad Lauber, Gerhart Wagner & Andreas Gygax, 2018, Flora Helvetica - Asteraceae, pp. 1074-1250 in Flora Helvetica, Bern :Haupt Verlag on page 1116
Differentiable Inference of Temporal Logic Formulas
Creators: name: Fronda, Nicole
name: Abbas, Houssam
Publisher: name: arXiv
Year: 2022
Subjects: subject: Machine Learning (cs.LG)
subject: Artificial Intelligence (cs.AI)
subject: Logic in Computer Science (cs.LO)
subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: We demonstrate the first Recurrent Neural Network architecture for learning Signal Temporal Logic formulas, and present the first systematic comparison of formula inference methods. Legacy systems embed much expert knowledge which is not explicitly formalized. There is great interest in learning formal specifications that characterize the ideal behavior of such systems -- that is, formulas in temporal logic that are satisfied by the system's output signals. Such specifications can be used to better understand the system's behavior and improve design of its next iteration. Previous inference methods either assumed certain formula templates, or did a heuristic enumeration of all possible templates. This work proposes a neural network architecture that infers the formula structure via gradient descent, eliminating the need for imposing any specific templates. It combines learning of formula structure and parameters in one optimization. Through systematic comparison, we demonstrate that this method achieves similar or better mis-classification rates (MCR) than enumerative and lattice methods. We also observe that different formulas can achieve similar MCR, empirically demonstrating the under-determinism of the problem of temporal logic inference.
MPEC 2024-J79 : 2015 WO1
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2024
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
PERFORMANCE OF BANKS IN KERALA IN HOUSING FINANCE: A CLOSER LOOK INTO THE KERALA-BASED PRIVATE BANKS
Creators: name: Dr. Firos Khan M. C.
name: Dr. Somasekharan T. M.
name: Dr. Reni Sebastian
name: Dr. Saritha C K
name: Manoj P. K
Publisher: name: Zenodo
Year: 2024
Subjects: Retail Credit, Housing Finance, MGR, PMAY, Digital India, ICT, CLM.

description: Abstract

Kerala has one of the best private banking infrastructure in the whole of India. At present, four out of the total twelve Old Private sector Banks (OPBs) in India are of Kerala-based OPBs. Housing being a fundamental pre-requisite of human life, it is a top priority of the Government. The commercial banks (CBs) in general and the Private sector Banks (PVBs) in particular including the OPBs have been in the forefront of promoting housing finance as it is a highly secured category of retail credit which has the highest asset quality or the lowest NPA level. Focusing on the Kerala-based OPBs (KOPBs) this study closely looks into the performance of KOPBs in the housing finance front and suggests strategies for their superior performance.
Xeranthemum annuum L.
Creators: name: Konrad Lauber
name: Gerhart Wagner
name: Andreas Gygax
Publisher: name: Haupt Verlag
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Xeranthemum
Xeranthemum annuum

description: Xeranthemum annuum L.
Artbeschreibung: Ähnlich wie X. inapertum, aber schon unter der Mitte verzweigt, Blätter höchstens 3 cm lang, Köpfe 100-120 blütig, Durchmesser zur Blütezeit 2,5-4 cm, Blüten hellviolett, Hüllblätter zur Blütezeit ausgebreitet, die innersten mehr als doppelt so lang wie die äusseren, Zungenblüten vortäuschend. Früchte 3-4,5 mm, Pappusschuppen 2-3 mm lang.
Blütezeit: 6-7
Standort und Verbreitung in der Schweiz: Ödland, selten adventiv oder aus Gärten verwildert / kollin /
Verbreitung global: Ostmediterran
Ökologische Zeigerwerte nach Landolt & al. (2010)
BodenfaktorenKlimafaktorenSalztoleranzFeuchtezahl Fsehr trockenLichtzahl LhellSalzzeichen--Reaktionszahl Rschwach sauer bis neutral (pH 4.5-7.5)Temperaturzahl Tsehr warm-kollin (nur an wärmsten Stellen, Hauptverbreitung in Südeuropa)Nährstoffzahl NnährstoffarmKontinentalitätszahl Kkontinental (sehr niedrige Luftfeuchtigkeit, sehr grosse Temperaturschwankungen, kalte Winter)
Volksname Deutscher Name: Einjährige Strohblume, Einjährige Spreublume Nom français: Xéranthème annuel Nome italiano: Perpetuini maggiori
description: Published as part of Konrad Lauber, Gerhart Wagner & Andreas Gygax, 2018, Flora Helvetica - Asteraceae, pp. 1074-1250 in Flora Helvetica, Bern :Haupt Verlag on page 1116
Non-Contrastive Self-supervised Learning for Utterance-Level Information Extraction from Speech
Creators: name: Cho, Jaejin
name: Villalba, Jes'us
name: Moro-Velazquez, Laureano
name: Dehak, Najim
Publisher: name: arXiv
Year: 2022
Subjects: subject: Audio and Speech Processing (eess.AS)
subject: Artificial Intelligence (cs.AI)
subject: Machine Learning (cs.LG)
subject: FOS: Electrical engineering, electronic engineering, information engineering
subject: FOS: Computer and information sciences

description: In recent studies, self-supervised pre-trained models tend to outperform supervised pre-trained models in transfer learning. In particular, self-supervised learning (SSL) of utterance-level speech representation can be used in speech applications that require discriminative representation of consistent attributes within an utterance: speaker, language, emotion, and age. Existing frame-level self-supervised speech representation, e.g., wav2vec, can be used as utterance-level representation with pooling, but the models are usually large. There are also SSL techniques to learn utterance-level representation. One of the most successful is a contrastive method, which requires negative sampling: selecting alternative samples to contrast with the current sample (anchor). However, this does not ensure that all the negative samples belong to classes different from the anchor class without labels. This paper applies a non-contrastive self-supervised method to learn utterance-level embeddings. We adapted DIstillation with NO labels (DINO) from computer vision to speech. Unlike contrastive methods, DINO does not require negative sampling. We compared DINO to x-vector trained in a supervised manner. When transferred to down-stream tasks (speaker verification, speech emotion recognition (SER), and Alzheimer's disease detection), DINO outperformed x-vector. We studied the influence of several aspects during transfer learning such as dividing the fine-tuning process into steps, chunk lengths, or augmentation. During fine-tuning, tuning the last affine layers first and then the whole network surpassed fine-tuning all at once. Using shorter chunk lengths, although they generate more diverse inputs, did not necessarily improve performance, implying speech segments at least with a specific length are required for better performance per application. Augmentation was helpful in SER.
description: EARLY ACCESS of IEEE JSTSP Special Issue on Self-Supervised Learning for Speech and Audio Processing
Xeranthemum inapertum Mill.
Creators: name: Konrad Lauber
name: Gerhart Wagner
name: Andreas Gygax
Publisher: name: Haupt Verlag
Year: 2018
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Xeranthemum
Xeranthemum inapertum

description: Xeranthemum inapertum (L.) Mill.
Artbeschreibung: 15-50 cm hoch, einfach oder oben verzweigt, filzig. Blätter lanzettlich, ganzrandig, sitzend oder kurz gestielt, bis 6 cm lang. Köpfe einzeln, 30-40 blütig, Durchmesser zur Blütezeit 1-1,5 cm. Blüten röhrenförmig, tief 5teilig, rotviolett. Hülle +/- zylindrisch, mit trockenhäutigen, dachziegelig angeordneten, weisslichen Hüllblättern, die inneren rosa, zur Blütezeit aufrecht, die innersten kaum doppelt so lang wie die äusseren. Früchte 5-6 mm lang, Pappus aus 5 ca. 5 mm langen Schuppen.
Blütezeit: 6-8
Standort und Verbreitung in der Schweiz: Felsensteppen, Föhrenwälder, Äcker / kollin-montan / VS (Rhonetal), früher auch MW (Payerne)
Verbreitung global: Mediterran
Ökologische Zeigerwerte nach Landolt & al. (2010)
BodenfaktorenKlimafaktorenSalztoleranzFeuchtezahl Fsehr trockenLichtzahl LhellSalzzeichen--Reaktionszahl Rschwach sauer bis neutral (pH 4.5-7.5)Temperaturzahl Tsehr warm-kollin (nur an wärmsten Stellen, Hauptverbreitung in Südeuropa)Nährstoffzahl NnährstoffarmKontinentalitätszahl Kkontinental (sehr niedrige Luftfeuchtigkeit, sehr grosse Temperaturschwankungen, kalte Winter)
Volksname Deutscher Name: Geschlossene Strohblume, Walliser Spreublume Nom français: Xéranthème fermé Nome italiano: Perpetuini mezzani
description: Published as part of Konrad Lauber, Gerhart Wagner & Andreas Gygax, 2018, Flora Helvetica - Asteraceae, pp. 1074-1250 in Flora Helvetica, Bern :Haupt Verlag on page 1116
Evidence for PeV Proton Acceleration from Fermi-LAT Observations of SNR G106.3+2.7
Creators: name: Fang, Ke
name: Kerr, Matthew
name: Blandford, Roger
name: Fleischhack, Henrike
name: Charles, Eric
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The existence of a "knee" at energy ~1 PeV in the cosmic-ray spectrum suggests the presence of Galactic PeV proton accelerators called "PeVatrons". Supernova Remnant (SNR) G106.3+2.7 is a prime candidate for one of these. The recent detection of very high energy (0.1-100 TeV) gamma rays from G106.3+2.7 may be explained either by the decay of neutral pions or inverse Compton scattering by relativistic electrons. We report an analysis of 12 years of Fermi-LAT gamma-ray data which shows that the GeV-TeV gamma-ray spectrum is much harder and requires a different total electron energy than the radio and X-ray spectra, suggesting it has a distinct, hadronic origin. The non-detection of gamma rays below 10 GeV implies additional constraints on the relativistic electron spectrum. A hadronic interpretation of the observed gamma rays is strongly supported. This observation confirms the long-sought connection between Galactic PeVatrons and SNRs. Moreover, it suggests that G106.3+2.7 could be the brightest member of a new population of SNRs whose gamma-ray energy flux peaks at TeV energies. Such a population may contribute to the cosmic-ray knee and be revealed by future very high energy gamma-ray detectors.
description: 14 pages, 7 figures. Editor's Suggestion in PRL
The Analysis about Building Cross-lingual Sememe Knowledge Base Based on Deep Clustering Network
Creators: name: Li, Xiaoran
name: Takano, Toshiaki
Publisher: name: arXiv
Year: 2022
Subjects: subject: Computation and Language (cs.CL)
subject: FOS: Computer and information sciences

description: A sememe is defined as the minimum semantic unit of human languages. Sememe knowledge bases (KBs), which contain words annotated with sememes, have been successfully applied to many NLP tasks, and we believe that by learning the smallest unit of meaning, computers can more easily understand human language. However, Existing sememe KBs are built on only manual annotation, human annotations have personal understanding biases, and the meaning of vocabulary will be constantly updated and changed with the times, and artificial methods are not always practical. To address the issue, we propose an unsupervised method based on a deep clustering network (DCN) to build a sememe KB, and you can use any language to build a KB through this method. We first learn the distributed representation of multilingual words, use MUSE to align them in a single vector space, learn the multi-layer meaning of each word through the self-attention mechanism, and use a DNC to cluster sememe features. Finally, we completed the prediction using only the 10-dimensional sememe space in English. We found that the low-dimensional space can still retain the main feature of the sememes.
description: 6 pages, 6 figures, published to SIG-SLUD
Evolution of the SrTiO$_3$ surface electronic state as a function of LaAlO$_3$ overlayer thickness
Creators: name: Plumb, N. C.
name: Kobayashi, M.
name: Salluzzo, M.
name: Razzoli, E.
name: Matt, C.
name: Strocov, V. N.
name: Zhou, K. -J.
name: Monney, C.
name: Schmitt, T.
name: Shi, M.
name: Mesot, J.
name: Patthey, L.
name: Radovic, M.
Publisher: name: arXiv
Year: 2013
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The novel electronic properties emerging at interfaces between transition metal oxides, and in particular the discovery of conductivity in heterostructures composed of LaAlO$_3$ (LAO) and SrTiO$_3$ (STO) band insulators, have generated new challenges and opportunities in condensed matter physics. Although the interface conductivity is stabilized when LAO matches or exceeds a critical thickness of 4 unit cells (u.c.), other phenomena such as a universal metallic state found on the bare surface of STO single crystals and persistent photon-triggered conductivity in otherwise insulating STO-based interfaces raise important questions about the role of the LAO overlayer and the possible relations between vacuum/STO and LAO/STO interfaces. Here, we study how the metallic STO surface state evolves using angle-resolved photoemission spectroscopy (ARPES) in situ prepared samples complemented by resonant inelastic X-ray scattering (RIXS) during the growth of a crystalline LAO overlayer. In all the studied samples, the character of the conduction bands, their carrier densities, the Ti3+ crystal field, and the response to photon irradiation bear strong similarities. Nevertheless, we report here that studied LAO/STO interfaces exhibit an instability toward an apparent 2 x 1 folding of the Fermi surface at and above 4 u.c. thickness threshold, which distinguishes these heterostructures from bare STO and sub-critical-thickness LAO/STO.
Heegaard Floer homology of surgeries on two-bridge links
Creators: name: Liu, Yajing
Publisher: name: arXiv
Year: 2014
Subjects: subject: Geometric Topology (math.GT)
subject: FOS: Mathematics

description: We give an $O(p^{2})$ time algorithm to compute the generalized Heegaard Floer complexes $A_{s_{1},s_{2}}^{-}(\overrightarrow{L})$'s for a two-bridge link $\overrightarrow{L}=b(p,q)$ by using nice diagrams. Using the link surgery formula of Manolescu-Ozsváth, we also show that ${\bf HF}^{-}$ and their $d$-invariants of all integer surgeries on two-bridge links are determined by $A_{s_{1},s_{2}}^{-}(\overrightarrow{L})$'s. We obtain a polynomial time algorithm to compute ${\bf HF}^{-}$ of all the surgeries on two-bridge links, with $\mathbb{Z}/2\mathbb{Z}$ coefficients. In addition, we calculate some examples explicitly: ${\bf HF}^{-}$ and the $d$-invariants of all integer surgeries on a family of hyperbolic two-bridge links including the Whitehead link.
description: 58 pages, 14 figures. Abstract and introduction revised; Theorem 1.1, Theorem 5.12 (now 5.13) adapted; Section 5.1 adapted; Section 5.6 and Example 5.16 added; sign errors fixed; typos in statement of Proposition 6.8 (now 6.9) corrected and computations simplified; Definition 2.2 (now 2.3) corrected. arXiv admin note: text overlap with arXiv:1011.1317 by other authors
Ion Coulomb Crystals
Creators: name: Thompson, Richard C.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Quantum Physics (quant-ph)
subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: Ion Coulomb crystals (ICC), formed by atomic ions at low temperatures in radiofrequency and Penning ion traps, are structures that have remarkable properties and many applications. Images of Coulomb crystals are striking and reveal the crystal structure, which arises from a balance between the trapping forces acting on the ions and their mutual Coulomb repulsion. Applications of these structures range from frequency standards and quantum simulation through to measurement of the cross sections of chemical reactions of ions.
description: Review article: 24 pages, 11 figures
One-dimensional photonic quasicrystals
Creators: name: Ghulinyan, Mher
Publisher: name: arXiv
Year: 2015
Subjects: subject: Optics (physics.optics)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: In this chapter, first we will address principal aspects of 1D quasiperiodicity with a particular focus on 1D Fibonacci chains. Further, the rest of the chapter will be dedicated to the electromagnetic counterpart of 1D Fibonacci structures as a relatively simplest case of the large class of photonic quasicrystals.
description: 16 pages, 17 figures, from "Light Localisation and Lasing", Eds. M. Ghulinyan, L. Pavesi, Cambridge Univ. Press (2015) Ch. 5, p. 99
Amonilea Cossmann 1920
Creators: name: Harzhauser, Mathias
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Mollusca
Gastropoda
Trochida
Trochidae
Amonilea

description: Genus Amonilea Cossmann, 1920 †
Type species. Trochus parnensis Bayan, 1870, type species by typification of replaced name, (Cossmann 1920: 137), Eocene, France.
Diagnosis. Small to medium-sized sigaretiform shells with strongly prosocline aperture; deep umbilicus with deeply excavated umbilical atrium. Shell surface smooth or with weak spiral cords.
Remarks. The unique umbilical features characterize this genus, which is restricted to the Lutetian to Rupelian of the NE Atlantic and the Rupelian of the Western Tethys.
= Moniliopsis Cossmann, 1918 (non Conrad, 1865)
= Moniliopsidea Tomlin, 1930, junior objective synonym of Amonilea Cossmann, 1920.
description: Published as part of Harzhauser, Mathias, 2021, The Cainozoic to present-day record of Circum-Mediterranean, NE Atlantic and North Sea Cantharidinae and Trochinae (Trochoidea, Gastropoda) - a synopsis, pp. 1-81 in Zootaxa 4902 (1) on page 17, DOI: 10.11646/zootaxa.4902.1.1, http://zenodo.org/record/4419088
Toric braids and $(m,n)$-parking functions
Creators: name: Mellit, Anton
Publisher: name: arXiv
Year: 2016
Subjects: subject: Combinatorics (math.CO)
subject: Quantum Algebra (math.QA)
subject: Representation Theory (math.RT)
subject: FOS: Mathematics

description: The Dyck path algebra construction of Carlsson and Mellit from arXiv:1508.06239 is interpreted as a representation of "the positive part" of the group of toric braids. Then certain sums over $(m,n)$-parking functions are related to evaluations of this representation on some special braids. The compositional $(km,kn)$-shuffle conjecture of Bergeron, Garsia, Leven and Xin from arXiv:1404.4616 is then shown to be a corollary of this relation.
The LNED and LFED Conjectures for Algebraic Algebras
Creators: name: Zhao, Wenhua
Publisher: name: arXiv
Year: 2017
Subjects: subject: Rings and Algebras (math.RA)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 47B47 (primary), 08A35, 16W25, 16D99 (secondary)

description: Let $K$ be a field of characteristic zero and $\mathcal A$ a $K$-algebra such that all the $K$-subalgebras generated by finitely many elements of $\mathcal A$ are finite dimensional over $K$. A $K$-$\mathcal E$-derivation of $\mathcal A$ is a $K$-linear map of the form $\operatorname{I}-ϕ$ for some $K$-algebra endomorphism $ϕ$ of $\mathcal A$, where $\operatorname{I}$ denotes the identity map of $\mathcal A$. In this paper we first show that for all locally finite $K$-derivations $D$ and locally finite $K$-algebra automorphisms $ϕ$ of $\mathcal A$, the images of $D$ and $\operatorname{I}-ϕ$ do not contain any nonzero idempotent of $\mathcal A$. We then use this result to show some cases of the LFED and LNED conjectures proposed in [Z4]. More precisely, We show the LNED conjecture for $\mathcal A$, and the LFED conjecture for all locally finite $K$-derivations of $\mathcal A$ and all locally finite $K$-$\mathcal E$-derivations of the form $δ=\operatorname{I}-ϕ$ with $ϕ$ being surjective. In particular, both conjectures are proved for all finite dimensional $K$-algebras. Furthermore, some finite extensions of derivations and automorphism to inner derivations and inner automorphisms, respectively, have also been established. This result is not only crucial in the proofs of the results above, but also interesting on its own right.
description: 15 pages
Some Open Problems on Locally Finite or Locally Nilpotent Derivations and ${\mathcal E}$-Derivations
Creators: name: Zhao, Wenhua
Publisher: name: arXiv
Year: 2017
Subjects: subject: Rings and Algebras (math.RA)
subject: Commutative Algebra (math.AC)
subject: FOS: Mathematics
subject: 47B47 (primary), 08A35, 16W25, 16D99 (secondary)

description: Let $R$ be a commutative ring and $\mathcal A$ an $R$-algebra. An $R$-$\mathcal E$-derivation of $\mathcal A$ is an $R$-linear map of the form $\operatorname{I}-ϕ$ for some $R$-algebra endomorphism $ϕ$ of $\mathcal A$, where $\operatorname{I}$ denotes the identity map of $\mathcal A$. In this paper we discuss some open problems on whether or not the image of a locally finite $R$-derivation or $R$-$\mathcal E$-derivation of $\mathcal A$ is a Mathieu subspace [Z2, Z3] of $\mathcal A$, and whether or not a locally nilpotent $R$-derivation or $R$-$\mathcal E$-derivation of $\mathcal A$ maps every ideal of $\mathcal A$ to a Mathieu subspace of $\mathcal A$. We propose and discuss two conjectures which state that both questions above have positive answers if the base ring $R$ is a field of characteristic zero. We give some examples to show the necessity of the conditions of the two conjectures, and discuss some positive cases known in the literature. We also show some cases of the two conjectures. In particular, both the conjectures are proved for locally finite or locally nilpotent algebraic derivations and $\mathcal E$-derivations of integral domains of characteristic zero.
description: Due to a counter example by Prof. Arno van den Essen, Conjecture 4.1 has been changed to a weaker form. Latex 28 pages