cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Performance Evaluation of Apache Spark MLlib Algorithms on an Intrusion Detection Dataset
Creators: name: Atefinia, Ramin
name: Ahmadi, Mahmood
Publisher: name: arXiv
Year: 2022
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: The increase in the use of the Internet and web services and the advent of the fifth generation of cellular network technology (5G) along with ever-growing Internet of Things (IoT) data traffic will grow global internet usage. To ensure the security of future networks, machine learning-based intrusion detection and prevention systems (IDPS) must be implemented to detect new attacks, and big data parallel processing tools can be used to handle a huge collection of training data in these systems. In this paper Apache Spark, a general-purpose and fast cluster computing platform is used for processing and training a large volume of network traffic feature data. In this work, the most important features of the CSE-CIC-IDS2018 dataset are used for constructing machine learning models and then the most popular machine learning approaches, namely Logistic Regression, Support Vector Machine (SVM), three different Decision Tree Classifiers, and Naive Bayes algorithm are used to train the model using up to eight number of worker nodes. Our Spark cluster contains seven machines acting as worker nodes and one machine is configured as both a master and a worker. We use the CSE-CIC-IDS2018 dataset to evaluate the overall performance of these algorithms on Botnet attacks and distributed hyperparameter tuning is used to find the best single decision tree parameters. We have achieved up to 100% accuracy using selected features by the learning method in our experiments
description: Journal of Computing and Security (Isfahan University, Iran), Vol. 9, No.1, 2022
Temnothorax annexus
Creators: name: Prebus, Matthew M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Temnothorax
Temnothorax annexus

description: annexus group T. annexus (Baroni Urbani) T. arbustus sp. nov. T. balnearius sp. nov. T. obtusigaster sp. nov. T. quercicola sp. nov.
description: Published as part of Prebus, Matthew M., 2021, Taxonomic revision of the Temnothorax salvini clade (Hymenoptera: Formicidae), with a key to the clades of New World Temnothorax, pp. 1-462 in PeerJ (e 11514) (e 11514) 9 on page 72, DOI: 10.7717/peerj.11514, http://zenodo.org/record/5102026
Climate change effects on sub-daily precipitation in Spain
Creators: name: del Jesus, Manuel
name: Diez-Sierra, Javier
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Medicine
subject: Environmental Sciences not elsewhere classified
subject: Ecology
subject: FOS: Biological sciences
subject: Biological Sciences not elsewhere classified
subject: Infectious Diseases
subject: FOS: Health sciences

description: Sub-daily extreme precipitation events are responsible for flash floods which generate impacts that cannot be analysed using daily precipitation information. In this study, we assess the effects of climate change in sub-daily rainfall statistics for Spain. We downscale daily records to the hourly scale using machine learning techniques, and then update the downscaling predictors to generate the sub-daily rainfall projections. We use the atmospheric climate change projections of the Coordinated Regional Climate Downscaling Experiment (CORDEX) initiative to update the downscaling predictors. We do not observe important differences between climate change scenarios, except in the average amounts of precipitation. Climate change will intensify the most extreme sub-daily events overall, as well as increase the number of dry spells, although some dry climates concentrate most of the effects. The intensification will increase the 100-year return period event, especially in those regions where large variances are observed, making flash floods more intense in the future.
Temnothorax augusti
Creators: name: Prebus, Matthew M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Temnothorax
Temnothorax augusti

description: augusti group T. augusti (Baroni Urbani) T. aureus sp. nov. T. leucacanthoides sp. nov. T. leucacanthus (Baroni Urbani)
description: Published as part of Prebus, Matthew M., 2021, Taxonomic revision of the Temnothorax salvini clade (Hymenoptera: Formicidae), with a key to the clades of New World Temnothorax, pp. 1-462 in PeerJ (e 11514) (e 11514) 9 on page 73, DOI: 10.7717/peerj.11514, http://zenodo.org/record/5102026
Quantum matrix geometry in the lowest Landau level and higher Landau levels
Creators: name: Hasebe, Kazuki
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: One of the most celebrated works of Professor Madore is the introduction of fuzzy sphere. I briefly review how the fuzzy two-sphere and its higher dimensional cousins are realized in the (spherical) Landau models in non-Abelian monopole backgrounds. For extracting quantum geometry from the Landau models, we evaluate the matrix elements of the coordinates of spheres in the lowest and higher Landau levels. For the lowest Landau level, the matrix geometry is identified as the geometry of fuzzy sphere. Meanwhile for the higher Landau levels, the obtained quantum geometry turns out to be a nested matrix geometry with no classical counterpart. There exists a hierarchical structure between the fuzzy geometries and the monopoles in different dimensions. That dimensional hierarchy signifies a Landau model counterpart of the dimensional ladder of quantum anomaly.
description: 12 pages, 9 figures, contribution to the proceedings for Workshop on Quantum Geometry, Field Theory and Gravity (dedicated to the memory of Professor John Madore), Corfu Summer Institute 2021 "School and Workshops on Elementary Particle Physics and Gravity" (CORFU2021) 29 August - 9 October 2021 Corfu, Greece
Environmental Solidarity in the Area of Freedom, Security and Justice. Towards the Judicial Protection of (Intergenerational) Environmental Rights in the EU
Creators: name: (:Unkn) Unknown
Publisher: name: Universita' degli Studi di Salerno
Year: 2022
Subjects: AFSJ
Climate change litigation
ECJ
Intergenerational equity
Rule of law
Environmental solidarity

description: Climate change and its dire effects are undoubtedly a common concern of humankind and call for international cooperation. The dire consequences of climate change pose a notable challenge to international environmental law but also national and international courts. This contribution aims to discuss the application of the principles of solidarity and rule of law in International and European Union (EU) environmental law, also in the context of the Area of Freedom, Security and Justice (AFSJ), and their implications as two key pillars of 21st century environmental law on strengthening environmental governance, where a “solidaristic spirit” has never been more necessary than now to renew “social cohesion” between generations, fulfilling the common goal of the survival of humankind. Furthermore, the analysis will consider the role of climate justice and the potential contribution of international human rights law and jurisprudence as increasingly central to combating environmental problems, where intergenerational equity, as the first distinguishing element of environmental (rule of) law strongly linked to the solidary rationale of the concept of sustainable development, may play a crucial role.
title: Διαδραστική οπτικοποίηση αλγορίθμων γράφων σε περιβάλλον παιχνιδιού
title: Interactive visualization of graph algorithms in a game environment
titleType: AlternativeTitle
Creators: name: Πανάγος, Νικόλαος
Publisher: name: Πανεπιστήμιο Δυτικής Αττικής
Year: 2023
Subjects: Γράφοι
Μοντελοποίηση προβλημάτων
Πληροφορική
Εκπαίδευση
Οπτικοποίηση
Εκπαιδευτικά προγράμματα
Εκπαιδευτικά παιχνίδια
Αναζήτηση πρώτα κατά βάθος (DFS)
Αναζήτηση πρώτα κατά πλάτος (BFS)
Unity
Παραστατική οπτικοποίηση
Κίνητρο
Διδασκαλία

description: Οι γράφοι αποτελούν ένα ισχυρό εργαλείο μοντελοποίησης προβλημάτων. Έχει αναπτυχθεί ένας ιδιαίτερος τομέας της πληροφορικής για τη μελέτη τους. Το γεγονός αυτό αποτελεί το κίνητρο για την ανάπτυξη σχετικών προγραμμάτων εκπαίδευσης. Η οπτικοποίηση του εκπαιδευτικού υλικού αποτελεί σημαντικό παράγοντα για την αύξηση της αποδοτικότητας της διδασκαλίας. Τα εκπαιδευτικά παιχνίδια είναι χαρακτηριστική έκφραση της οπτικοποίησης της εκπαίδευσης. Στην παρούσα εργασία επιχειρήθηκε η οπτικοποίηση δύο βασικών αλγορίθμων γράφων: της αναζήτησης πρώτα κατά βάθος (Depth firsrt Search – DFS) και της αναζήτησης πρώτα κατά πλάτος (Breadth first Search – BFS). Χρησιμοποιήθηκε η πλατφόρμα ανάπτυξης παιχνιδιών Unity. Μέσα από τη διαδικασία ανάπτυξης φάνηκε ότι το εκπαιδευτικό παιχνίδι μπορεί να συμβάλει στην παραστατική οπτικοποίηση των μαθημάτων.
Temnothorax casanovai Prebus 2021
Creators: name: Prebus, Matthew M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Temnothorax
Temnothorax casanovai

description: casanovai group T. casanovai sp. nov.
description: Published as part of Prebus, Matthew M., 2021, Taxonomic revision of the Temnothorax salvini clade (Hymenoptera: Formicidae), with a key to the clades of New World Temnothorax, pp. 1-462 in PeerJ (e 11514) (e 11514) 9 on page 73, DOI: 10.7717/peerj.11514, http://zenodo.org/record/5102026
PrEP on TikTok: benefits, barriers, and possibilities
Creators: name: Schwartz, Joseph
name: Grimm, Josh
name: Jamison, Cameron
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Medicine
subject: Molecular Biology
subject: Pharmacology
subject: Biotechnology
subject: Environmental Sciences not elsewhere classified
subject: Chemical Sciences not elsewhere classified
subject: Sociology
subject: FOS: Sociology
subject: Cancer
subject: Science Policy
subject: Mental Health
subject: Hematology
subject: Infectious Diseases
subject: FOS: Health sciences

description: HIV remains a serious problem in the U.S. particularly for men who have sex with men. PrEP is an intervention that can dramatically decrease the risk of HIV infection. Because rates of PrEP adoption have been lower than anticipated, researchers have called for new tactics for promoting PrEP. For this reason, we analyzed PrEP messaging on TikTok. In an analysis guided by the Health Belief Model, we found that discussions of PrEP benefits and barriers were most common on TikTok. Severity and susceptibility were least common. We distilled these findings into suggestions for promoting PrEP adoption.
Description and Application of the Surfing Effect
Creators: name: Maiorano, Michele
name: De Paolis, Francesco
name: Nucita, Achille A.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: The standard technique for very low-frequency gravitational wave detection is mainly based on searching for a specific spatial correlation in the variation of the times of arrival of the radio pulses emitted by millisecond pulsars with respect to a timing model. This spatial correlation, which in the case of the gravitational wave background must have the form described by the Hellings and Downs function, has not yet been observed. Therefore, despite the numerous hints of a common red noise in the timing residuals of many millisecond pulsars compatible with that expected for the gravitational wave background, its detection has not yet been achieved. By now, the reason is not completely clear and, from some recent works, the urgency to adopt new detection techniques, possibly complementary to the standard one, is emerging clearly. Of course, this demand also applies to the detection of continuous gravitational waves emitted by supermassive black hole binaries populating the Universe. In the latter case, important information could, in principle, emerge from the millisecond pulsars considered individually in a single-pulsar search of continuous GWs. In this context, the surfing effect can then be exploited, helping to select the best pulsars to carry out such analysis. This paper aims to clarify when the surfing effect occurs and describe it exhaustively. A possible application to the case of the supermassive black hole binary candidate PKS 2131-021 and millisecond pulsar J2145-0750 is also analyzed.
description: 16 pages, 13 figures
Twins for life? A comparative analysis of the Type Ia supernovae 2011fe and 2011by
Creators: name: Graham, Melissa L.
name: Foley, Ryan J.
name: Zheng, Weikang
name: Kelly, Patrick L.
name: Shivvers, Isaac
name: Silverman, Jeffrey M.
name: Filippenko, Alexei V.
name: Clubb, Kelsey I.
name: Ganeshalingam, Mohan
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: The nearby Type Ia supernovae (SNe Ia) 2011fe and 2011by had nearly identical photospheric phase optical spectra, light-curve widths, and photometric colours, but at peak brightness SN 2011by reached a fainter absolute magnitude in all optical bands and exhibited lower flux in the near-ultraviolet (NUV). Based on those data, Foley & Kirshner (2013) argue that the progenitors of SNe 2011by and 2011fe were supersolar and subsolar, respectively, and that SN 2011fe generated 1.7 times the amount of 56Ni as SN 2011by. With this work, we extend the comparison of these SNe Ia to 10 days before and 300 days after maximum brightness with new spectra and photometry. We show that the nebular phase spectra of SNe 2011fe and 2011by are almost identical, and do not support a factor of 1.7 difference in 56Ni mass. Instead, we find it plausible that the Tully-Fisher distance for SN 2011by is an underestimate, in which case these SNe Ia may have reached similar peak luminosity, formed similar amounts of 56Ni, and had lower metallicity progenitors than previously estimated. Regardless of the true distance to SN 2011by, we find that the relative progenitor metallicity difference remains well supported by their disparity in NUV flux, which we show to be even stronger at pre-maximum epochs --- although contributions from differences in total ejecta mass, viewing angle, or progenitor density cannot be ruled out. We also demonstrate that, independent of distance modulus, SN 2011by exhibits a late-time luminosity excess that cannot be explained by a light echo, but is more likely to be the result of greater energy trapping by the nucleosynthetic products of SN 2011by.
description: 17 pages, 12 figures, 4 tables, submitted to MNRAS
Optimal Influencer Marketing Campaign Under Budget Constraints Using Frank-Wolfe
Creators: name: Lopez-Dawn, Ricardo
name: Giovanidis, Anastasios
Publisher: name: arXiv
Year: 2022
Subjects: subject: Social and Information Networks (cs.SI)
subject: Networking and Internet Architecture (cs.NI)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences

description: Influencer marketing has become a thriving industry with a global market value expected to reach 15 billion dollars by 2022. The advertising problem that such agencies face is the following: given a monetary budget find a set of appropriate influencers that can create and publish posts of various types (e.g. text, image, video) for the promotion of a target product. The campaign's objective is to maximize across one or multiple online social platforms some impact metric of interest, e.g. number of impressions, sales (ROI), or audience reach. In this work, we present an original continuous formulation of the budgeted influencer marketing problem as a convex program. We further propose an efficient iterative algorithm based on the Frank-Wolfe method, that converges to the global optimum and has low computational complexity. We also suggest a simpler near-optimal rule of thumb, which can perform well in many practical scenarios. We test our algorithm and the heuristic against several alternatives from the optimization literature as well as standard seed selection methods and validate the superior performance of Frank-Wolfe in execution time and memory, as well as its capability to scale well for problems with very large number (millions) of social users.
description: accepted in IEEE Transactions on Network Science and Engineering, 16 pages, double column, 4 figures
Temnothorax fuscatus
Creators: name: Prebus, Matthew M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Temnothorax
Temnothorax fuscatus

description: fuscatus group T. fuscatus (Mann) T. nebliselva sp. nov. T. ocarinae (Baroni Urbani) T. skwarrae (Wheeler)
description: Published as part of Prebus, Matthew M., 2021, Taxonomic revision of the Temnothorax salvini clade (Hymenoptera: Formicidae), with a key to the clades of New World Temnothorax, pp. 1-462 in PeerJ (e 11514) (e 11514) 9 on page 73, DOI: 10.7717/peerj.11514, http://zenodo.org/record/5102026
MPEC 2025-C50 : DAILY ORBIT UPDATE (2025 February 5)
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2025
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.
Magnetohydrodynamic modeling of the accretion shocks in classical T Tauri stars: the role of local absorption on the X-ray emission
Creators: name: Bonito, R.
name: Orlando, S.
name: Argiroffi, C.
name: Miceli, M.
name: Peres, G.
name: Matsakos, T.
name: Stehle, C.
name: Ibgui, L.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: FOS: Physical sciences

description: We investigate the properties of X-ray emission from accretion shocks in classical T Tauri stars (CTTSs), generated where the infalling material impacts the stellar surface. Both observations and models of the accretion process reveal several aspects that are still unclear: the observed X-ray luminosity in accretion shocks is below the predicted value, and the density versus temperature structure of the shocked plasma, with increasing densities at higher temperature, deduced from the observations, is at odds with that proposed in the current picture of accretion shocks. To address these open issues we investigate whether a correct treatment of the local absorption by the surrounding medium is crucial to explain the observations. To this end, we describe the impact of an accretion stream on a CTTS by considering a magnetohydrodynamic model. From the model results we synthesize the X-ray emission from the accretion shock by producing maps and spectra. We perform density and temperature diagnostics on the synthetic spectra, and we directly compare the results with the observations. Our model shows that the X-ray fluxes inferred from the emerging spectra are lower than expected because of the complex local absorption by the optically thick material of the chromosphere and of the unperturbed stream. Moreover, our model including the effects of local absorption explains in a natural way the apparently puzzling pattern of density versus temperature observed in the X-ray emission from accretion shocks.
description: Accepted for publication in Astrophysical Journal Letters; 5 pages, 4 figures
Temnothorax goniops
Creators: name: Prebus, Matthew M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Temnothorax
Temnothorax goniops

description: goniops group T. achii sp. nov. T. goniops (Baroni Urbani) T. huehuetenangoi (Baroni Urbani) T. ixili (Baroni Urbani) T. xincai sp. nov.
description: Published as part of Prebus, Matthew M., 2021, Taxonomic revision of the Temnothorax salvini clade (Hymenoptera: Formicidae), with a key to the clades of New World Temnothorax, pp. 1-462 in PeerJ (e 11514) (e 11514) 9 on page 73, DOI: 10.7717/peerj.11514, http://zenodo.org/record/5102026
Coming of Age in the Dark Sector: How Dark Matter Haloes grow their Gravitational Potential Wells
Creators: name: Bosch, Frank C. van den
name: Jiang, Fangzhou
name: Hearin, Andrew
name: Campbell, Duncan
name: Watson, Douglas
name: Padmanabhan, Nikhil
Publisher: name: arXiv
Year: 2014
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We present a detailed study of how dark matter haloes assemble their mass and grow their (central) potential well. We characterize these via their mass accretion histories (MAHs) and potential well growth histories (PWGHs), which we extract from the Bolshoi simulation and from semi-analytical merger trees supplemented with a method to compute the maximum circular velocity, Vmax, of progenitor haloes. The results of both methods are in excellent agreement, both in terms of the average and the scatter. We show that the MAH and PWGH are tightly correlated, and that growth of the central potential precedes the assembly of mass; the maximum circular velocity is already half the present day value by the time the halo has accreted only 2 percent of its final mass. Finally, we demonstrate that MAHs have a universal form, which we use to develop a new and improved universal model that can be used to compute the average or median MAH and PWGH for a halo of any mass in any LCDM cosmology, without having to run a numerical simulation or a set of halo merger trees.
description: 20 pages, 14 figures, accepted for publication in MNRAS
Virtual Reality in serious games : a systematic review of literature from 2015 to present
Creators: name: Ren, Ying
name: 0000-0001-7895-999X
Publisher: name: The University of Texas at Austin
Year: 2022
Subjects: Virtual reality
Serious games
Educational games

description: Virtual Reality (VR) is a new technology that is popular and considered promising, and has been used in a variety of fields. It is generally agreed that serious games have a beneficial effect on learning. Combining VR and serious games to deliver specific learning content and enhance the effectiveness of learning is a topic of interest for many researchers. A total of 15 peer-reviewed journals and one conference paper between 2015 to March 2022 were included in the literature synthesis.This report analyzes the use of Virtual reality in serious games, including the types of VR, the benefits and limitations that VR brings. Recommendations for the future implications of VR serious games are provided.
Temnothorax misomoschus Prebus 2021
Creators: name: Prebus, Matthew M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Temnothorax
Temnothorax misomoschus

description: misomoschus group T. misomoschus sp. nov.
description: Published as part of Prebus, Matthew M., 2021, Taxonomic revision of the Temnothorax salvini clade (Hymenoptera: Formicidae), with a key to the clades of New World Temnothorax, pp. 1-462 in PeerJ (e 11514) (e 11514) 9 on page 73, DOI: 10.7717/peerj.11514, http://zenodo.org/record/5102026
Revisiting the galactic X-ray binary MAXI J1631-479: Implications for high inclination and a massive black hole
Creators: name: Rout, Sandeep K.
name: Vadawale, Santosh
name: Garcia, Javier
name: Connors, Riley
Publisher: name: arXiv
Year: 2022
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: X-ray spectroscopy of galactic black hole binaries serve as a powerful tool to gain an overall understanding of the system. Not only can the properties of the accretion disk be studied in detail, the fundamental properties of the black hole can also be inferred. The pursuit of these objectives also leads to an indirect validation of general relativity in strong field limit. In this work we carry out a comprehensive spectral analysis of the galactic X-ray binary MAXI J1631-479 using data from NICER and NuSTAR observatories. We trace the evolution of the accretion disk properties such as density, ionization, Fe abundance, etc as the source transitions from a disk dominated soft state to a power law dominated hard intermediate state. We provide strong constrains on the spin of the black hole and the inclination of the inner disk. We also use the soft state NICER observations to constrain the black hole mass using distance estimates from optical observations.
description: 15 pages, 6 figures, 1 table. Accepted in the Astrophysical Journal
Developments in Marketing Spreads for Agricultural Products in 1968
Creators: name: Economic Research Service
name: Economic Research Service
Publisher: name: Unknown
Year: 1969
Subjects: subject: Demand and Price Analysis
subject: Labor and Human Capital
subject: Marketing
subject: FOS: Economics and business

description: Report Highlights: 1. The retail cost of the market basket of farm foods averaged 3½ percent higher in 1968 than in 1967. Food costs rose through August and stabilized in the remainder of the year. The retail cost of the market basket averaged the same in the third and fourth quarters of 1968. 2. Farmers received about 5 percent more for food commodities in 1968 than in 1967. Higher farm values for meat products and fresh fruits and vegetables accounted for three-fourths of this increase. 3. The farmer's share of the dollar consumers spent for food averaged 39 cents in 1968--1 cent more than in 1967. 4. The spread between the retail cost and farm value of the market basket widened about 2½ percent in 1968, continuing a long-term upward trend. The increase in 1968 was double the annual average increase of the past decade. The farm-retail spread increased for all product groups in 1968, although the percentage increase for fresh fruits and vegetables was about 3 times greater than for other food groups. 5. Marketing costs continued to rise in 1968. Prices paid by food marketing firms for goods and services rose 3 to 4 percent in 1968, while hourly earnings of persons employed by food processors, wholesalers and retailers rose 6 percent. 6. Firms marketing farm products earned about the same profit in 1968 as in 1967. Profits after taxes of 15 leading retail food chains averaged 1 percent of sales in the first 9 months of 1968. This was the same as a year earlier, when it was the lowest since 1957. Profits of corporations manufacturing food products amounted to 2.4 percent of sales in the first 9 months of 1968, the same as a year earlier. 7. Per person expenditures for all food amounted to $503 in 1968--5½ percent above a year earlier. Although food expenditures rose, the percent of consumer disposable income spent for food declined slightly in 1968 to around 17.2 percent. 8. Labor productivity in food marketing rose substantially throughout the 1950's and early 1960's. Gains in labor productivity have been greater in food manufacturing than in food distribution, although productivity gains of both have been comparable to the total nonfarm sector of the economy. 9. Increased productivity partially offsets rising labor costs. From 1957-59 to 1967, food marketing labor costs per hour rose 47 percent while unit labor costs rose only about 18 percent.
description: Reprinted from Hearings Before the Subcommittee of the Committee on Appropriations, United States House of Representatives, Ninety-First Congress, First Session.
Dark Photon as Fractional Cosmic Neutrino Masquerader
Creators: name: Ng, Kin-Wang
name: Tu, Huitzu
name: Yuan, Tzu-Chiang
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Recently, Weinberg proposed a Higgs portal model with a spontaneously broken global $U(1)$ symmetry in which Goldstone bosons may be masquerading as fractional cosmic neutrinos. We extend the model by gauging the $U(1)$ symmetry. This gives rise to the so-called dark photon and dark Higgs. The dark photons can constitute about 0.912 (0.167) to the effective number of light neutrino species if they decouple from the thermal bath before the pions become non-relativistic and after (before) the QCD transition. Restriction on the parameter space of the portal coupling and the dark Higgs mass is obtained from the freeze-out condition of the dark photons. Combining with the collider data constraints on the invisible width of the standard model Higgs requires the dark Higgs mass to be less than a few GeV.
description: 19 pages, 3 figures
Strategies for Probing Non-Minimal Dark Sectors at Colliders: The Interplay Between Cuts and Kinematic Distributions
Creators: name: Dienes, Keith R.
name: Su, Shufang
name: Thomas, Brooks
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Experiment (hep-ex)
subject: FOS: Physical sciences

description: In this paper, we examine the strategies and prospects for distinguishing between traditional dark-matter models and models with non-minimal dark sectors --- including models of Dynamical Dark Matter (DDM) --- at hadron colliders. For concreteness, we focus on events with two hadronic jets and large missing transverse energy at the Large Hadron Collider (LHC). As we discuss, simple "bump-hunting" searches are not sufficient; probing non-minimal dark sectors typically requires an analysis of the actual shapes of the distributions of relevant kinematic variables. We therefore begin by identifying those kinematic variables whose distributions are particularly suited to this task. However, as we demonstrate, this then leads to a number of additional subtleties, since cuts imposed on the data for the purpose of background reduction can at the same time have the unintended consequence of distorting these distributions in unexpected ways, thereby obscuring signals of new physics. We therefore proceed to study the correlations between several of the most popular relevant kinematic variables currently on the market, and investigate how imposing cuts on one or more of these variables can impact the distributions of others. Finally, we combine our results in order to assess the prospects for distinguishing non-minimal dark sectors in this channel at the upgraded LHC.
description: 16 pages, LaTeX, 7 figures, 1 table
Enhanced Star Formation Efficiency in the Central Regions of Nearby Quasars Hosts
Creators: name: Molina, Juan
name: Ho, Luis C.
name: Wang, Ran
name: Shangguan, Jinyi
name: Bauer, Franz E.
name: Treister, Ezequiel
Publisher: name: arXiv
Year: 2022
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: We combine Atacama Large Millimeter/submillimeter Array and Multi Unit Spectroscopic Explorer observations tracing the molecular gas, millimeter continuum, and ionized gas emission in six low-redshift ($z \lesssim 0.06$) Palomar-Green quasar host galaxies to investigate their ongoing star formation at $\sim$kpc-scale resolution. The AGN contribution to the cold dust emission and the optical emission-line flux is carefully removed to derive spatial distributions of the star formation rate (SFR), which, complemented with the molecular gas data, enables the mapping of the depletion time ($t_{\rm dep}$). We report ubiquitous star formation activity within the quasar host galaxies, with the majority of the ongoing star formation occurring in the galaxy center. The rise of the star formation rate surface density ($Σ_{\rm SFR}$) toward the nucleus is steeper than that observed for the cold molecular gas surface density, reaching values up to $Σ_{\rm SFR} \approx 0.15-0.80\,M_\odot\,$yr$^{-1}\,$kpc$^{-2}$. The gas in the nuclear regions is converted into stars at a shortened depletion time ($t_{\rm dep} \approx 0.2-2.0\,$Gyr), suggesting that those zones can be deemed as starbursts. At large galactocentric radius, we find that the ongoing star formation takes place within spiral arms or H$\,$II region complexes, with an efficiency comparable to that reported for nearby inactive spirals ($t_{\rm dep} \approx 1.8\,$Gyr). We find no evidence of star formation activity shutoff in the PG quasar host galaxies. On the contrary, these observations shed light on how the central environments of galaxies hosting actively accreting supermassive black holes builds up stellar mass.
description: 29 pages, 11 figures, 4 tables. Accepted for publication in ApJ
Clustering in nuclear environment
Creators: name: Röpke, G.
Publisher: name: arXiv
Year: 2014
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The properties of few-body clusters (mass number $A \le 4$) are modified if they are immersed in a nuclear medium. In particular, Pauli blocking that reflects the antisymmetrization of the many-body wave function is responsible for the medium modification of light clusters and the dissolution with increasing density. A more consistent description is given with takes also the contribution of correlations in the continuum into account. The relation between cluster formation in warm dense matter and in nuclear structure is discussed.
description: 5 pages, 5 figures
The nineteenth-century French short story: between fixity and movement
Creators: name: Burston, Emma
Publisher: name: No Publisher Supplied
Year: 2022

description: This dissertation redefines the 19th-century nouvelle (or French short story) by highlighting both the genre’s recurring fascination with the themes of slowness, stillness, and entrapment, and the close attention it pays to limits, especially its own formal constraints. To do this, this study, emphasizing the narrative specificities of the short story in the wake of the many socio-cultural changes that marked the 19th century, endeavors to show how the nouvelle is inspired by, or responds to, these new visual technologies, not to mention the changes which accompanied the Industrial Revolution. As France hesitates between the imperative of speed (symbolized by the expansion of the chemin de fer) and a fascination for stillness, especially for capturing still images of an ever-changing present, that become possible thanks to photography and other visual technologies, the short story freezes time, allowing for a moment of pause. Through close analysis of a large corpus of short stories (by Balzac, Mérimée, Verne, H.G Wells, Stendhal, Barbey D’Aurevilly, Maupassant, Gautier, Nerval, Hawthorne and Zola), this dissertation shows how the 19th-century nouvelle becomes the privileged place for stillness and immobility, two vices that a century obsessed with movement sought to banish.Cette thèse propose une redéfinition de la nouvelle du XIXème siècle, en montrant, à travers son intérêt manifeste pour la lenteur, l’immobilité et la clôture, comment le genre est marqué par une attention particulière aux limites, et notamment les siennes. Pour ce faire, cette étude, dégageant les spécificités de la narration de la nouvelle à l’aune des bouleversements socio-culturels de l’époque, propose de montrer comment la nouvelle s’inspire des, ou répond aux techniques visuelles naissantes. Sans oublier que, au XIXe siècle, l’œil fait sa révolution au rythme de celle de l’industrie, et hésite entre l’injonction de vitesse symbolisée par la locomotive et la fascination pour l’image fixe, que permettent désormais la photographie et ses inventions dérivées (panorama, diorama, daguerréotype). En parcourant un large corpus de nouvelles (de Balzac, Mérimée, Verne, H.G Wells, Stendhal, Barbey D’Aurevilly, Maupassant, Gautier, Nerval, Hawthorne et Zola), cette étude montre que la nouvelle prend toute sa spécificité parce qu’elle devient le lieu privilégié de la lenteur et de l’immobilité, ces vices que le siècle du mouvement prétend abolir.
Temnothorax pastinifer Prebus 2021
Creators: name: Prebus, Matthew M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Temnothorax
Temnothorax pastinifer

description: pastinifer group T. androsanus (Wheeler) T. nigricans (Baroni Urbani) T. pastinifer (Emery) T. rutabulafer sp. nov. T. schwarzi (Mann)
description: Published as part of Prebus, Matthew M., 2021, Taxonomic revision of the Temnothorax salvini clade (Hymenoptera: Formicidae), with a key to the clades of New World Temnothorax, pp. 1-462 in PeerJ (e 11514) (e 11514) 9 on page 73, DOI: 10.7717/peerj.11514, http://zenodo.org/record/5102026
Ambient magnetic field amplification in shock fronts of relativistic jets: an application to GRB afterglows
Creators: name: da Silva, G. Rocha
name: Falceta-Goncalves, D.
name: Kowal, G.
name: Pino, E. M. de Gouveia Dal
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Strong downstream magnetic fields of order of $\sim 1$G, with large correlation lengths, are believed to cause the large synchrotron emission at the afterglow phase of gamma ray bursts (GRBs). Despite of the recent theoretical efforts, models have failed to fully explain the amplification of the magnetic field, particularly in a matter dominated scenario. We revisit the problem by considering the synchrotron emission to occur at the expanding shock front of a weakly magnetized relativistic jet over a magnetized surrounding medium. Analytical estimates and a number of high resolution 2D relativistic magneto-hydrodynamical (RMHD) simulations are provided. Jet opening angles of $θ= 0^{\circ} - 20^{\circ}$, and ambient to jet density ratios of $10^{-4} - 10^2$ were considered. We found that most of the amplification is due to compression of the ambient magnetic field at the contact discontinuity between the reverse and forward shocks at the jet head, with substantial pile-up of the magnetic field lines as the jet propagates sweeping the ambient field lines. The pile-up is maximum for $θ\rightarrow 0$, decreasing with $θ$, but larger than in the spherical blast problem. Values obtained for certain models are able to explain the observed intensities. The maximum correlation lengths found for such strong fields is of $l_{\rm corr} \leq 10^{14}$ cm, $2 - 6$ orders of magnitude larger than the found in previous works.
description: mnras accepted
Propuesta en transformación digital en servicios tecnológicos para ayudar a combatir la deforestación, erosión y cambio climático.
Creators: name: Navarro, Fauricio Alban Conejo
Publisher: name: Zenodo
Year: 2022
Subjects: Digital
Tranformation
Scrum
Kanban
Scrunban
Deforestation
Climate
Change
Kotter
Project
Program
Portfolio
Product

description: La temática es sobre los posibles impactos positivos de la digitalización como medio para ayudar a combatir deforestación, erosión y cambio climático. Unos de los ejes son sus aplicación en la gestión de servicios para reducir o eliminar el uso de papel y así ayudar a reducir la necesidad de contribuir a la deforestación y erosión por la demanda de papel. Adicionalmente, como las tecnologías de hoy en día ayudan a poder brindar otra herramienta para el monitoreo de los terrenos y así poder medir la situación para saber que acciones tomar por medio del monitoreo de la deforestación, erosión y cambio climático. Finalmente, un reto de como pueden considerar que la transformación digital pueda ayudar en otra áreas para combatir el cambio climático.
The last forty years of surface deformation at Campi Flegrei caldera: two simple stationary sources are enough
Creators: name: Sabbetta, Ilaria
Publisher: name: Universita degli studi di Salerno
Year: 2014
Subjects: subject: GEO/10 GEOFISICA DELLA TERRA SOLIDA
subject: Campi Flegrei
subject: Fenomeni bradisismici

description: 2012 - 2013
description: The Campi Flegrei (CF) caldera is one of the world’s most active caldera; in this area the volcanic risk is extremely high, because of its location in a densely populated area about 15 km west of Naples inside the Campanian Plain. This caldera is renowned for its long historical activity that includes earthquakes, eruption and intense unrest episodes. The source of the observed surface deformation at Campi Flegrei has been and is a matter of debate, particularly in the last two years (2011-2013) because of a considerable uplift ( 15cm) that have drawn attention from both the scientists and civil protection. In such a context, my thesis has been focused to find a simple model source that explains the CF deformation field during the last forty years (1970-2013), analyzing different types of data. The positive bradyseism crisis of 1982-1984 and the negative bradyseism of 1995-2000, in particular, are investigated. Different periods are covered by different types of data, from 1970 to 1994 by leveling data, in 1980 and in 1983 by geodetic precise traversing data, from 1993 to 2010 by Synthetic-Aperture Radar (SAR) data and finally from 2000 to October 2013 by continuous Global Positioning System (cGPS). The first part of the thesis consists of a description of the deformation history of CF and the state of the art. Different models for earthquake volcano deformation, used to explain the CF phenomenology and two kinds of Monte Carlo inversion methods to determine the model source, are introduced. In the second part, the results of the analysis and of the inversion are described. Firstly the period 1970-2010 is analyzed, using leveling, geodetic precise traversing and SAR data, and subsequently cGPS data for the 2000-2013 period are used to confirm the found model... [edited by Author]
Indipendenza della magistratura e non-regressione nella garanzia dei valori comuni europei. Dal caso Repubblika alla sentenza K 3/21 del Tribunale costituzionale polacco
Creators: name: Festa, Angela
Publisher: name: Universita' degli Studi di Salerno
Year: 2021
Subjects: Rule of law
Independence of judiciary
EU common values
Nonregression principle
Mutual trust

description: The Repubblika judgment, delivered by the Court of Justice on 20 April 2021 in case C-896/19, is not just another piece of a courageous (albeit almost settled) case-law aimed at strengthening the guarantees of judicial independence for national judges, but with its affirmation of a general principle of non-regression in safeguarding common European values, it constitutes a step forward in the European constitutional process. The present contribution focuses on this new principle by investigating its potential application, also with respect to one of the “regressions” with the potentially most far reaching effects of recent times: the one made through the very recent ruling K 3/21 of the Polish Constitutional Court.
Temnothorax pergandei
Creators: name: Prebus, Matthew M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Temnothorax
Temnothorax pergandei

description: pergandei group T. bison sp. nov. T. pergandei (Emery)
description: Published as part of Prebus, Matthew M., 2021, Taxonomic revision of the Temnothorax salvini clade (Hymenoptera: Formicidae), with a key to the clades of New World Temnothorax, pp. 1-462 in PeerJ (e 11514) (e 11514) 9 on page 73, DOI: 10.7717/peerj.11514, http://zenodo.org/record/5102026
Temnothorax pilicornis Prebus 2021
Creators: name: Prebus, Matthew M.
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Formicidae
Temnothorax
Temnothorax pilicornis

description: pilicornis group T. pilicornis sp. nov.
description: Published as part of Prebus, Matthew M., 2021, Taxonomic revision of the Temnothorax salvini clade (Hymenoptera: Formicidae), with a key to the clades of New World Temnothorax, pp. 1-462 in PeerJ (e 11514) (e 11514) 9 on page 73, DOI: 10.7717/peerj.11514, http://zenodo.org/record/5102026
Canonical form of $C^*$-algebra of eikonals related to the metric graph
Creators: name: Belishev, M. I.
name: Kaplun, A. V.
Publisher: name: arXiv
Year: 2022
Subjects: subject: Operator Algebras (math.OA)
subject: Mathematical Physics (math-ph)
subject: FOS: Mathematics
subject: FOS: Physical sciences
subject: 46Lxx, 34B45, 35Qxx, 35R30

description: The eikonal algebra $\mathfrak E$ of the metric graph $Ω$ is an operator $C^*$--algebra defined by the dynamical system which describes the propagation of waves generated by sources supported in the boundary vertices of $Ω$. This paper describes the canonical block form of the algebra $\mathfrak E$ of an arbitrary compact connected metric graph. Passing to this form is equivalent to constructing a functional model which realizes $\mathfrak E$ as an algebra of continuous matrix-valued functions on its spectrum $\widehat{\mathfrak{E}}$. The results are intended to be used in the inverse problem of reconstruction of the graph by spectral and dynamical boundary data. Bibliography: 28 items.
The Imaginary Potential of Heavy Quarkonia Moving in Strongly Coupled Plasma
Creators: name: Ali-Akbari, M.
name: Giataganas, D.
name: Rezaei, Z.
Publisher: name: arXiv
Year: 2014
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Lattice (hep-lat)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: The melting of a heavy quark-antiquark bound state depends on the screening phenomena associated with the binding energy, as well as scattering phenomena associated with the imaginary part of the potential. We study the imaginary part of the static potential of heavy quarkonia moving in the strongly coupled plasma. The imaginary potential dependence on the velocity of the traveling bound states is calculated. Non-zero velocity leads to increase of the absolute value of the imaginary potential. The enhancement is stronger when the quarkonia move orthogonal to the quark-gluon plasma maximizing the flux between the pair. Moreover, we estimate the thermal width of the moving bound state and find it enhanced compared to the static one. Our results imply that the moving quarkonia dissociate easier than the static ones in agreement with the expectations.
description: 1+19 pages, 8 figures
Vesicle Dynamics in a Confined Poiseuille Flow: From Steady-State to Chaos
Creators: name: Aouane, Othmane
name: Thiebaud, Marine
name: Benyoussef, Abdelilah
name: Wagner, Christian
name: Misbah, Chaouqi
Publisher: name: arXiv
Year: 2014
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Soft Condensed Matter (cond-mat.soft)
subject: Biological Physics (physics.bio-ph)
subject: Fluid Dynamics (physics.flu-dyn)
subject: FOS: Physical sciences

description: Red blood cells (RBCs) are the major component of blood and the flow of blood is dictated by that of RBCs. We employ vesicles, which consist of closed bilayer membranes enclosing a fluid, as a model system to study the behavior of RBCs under a confined Poiseuille flow. We extensively explore two main parameters: i) the degree of confinement of vesicles within the channel, and ii) the flow strength. Rich and complex dynamics for vesicles are revealed ranging from steady-state shapes (in the form of parachute and slipper) to chaotic dynamics of shape. Chaos occurs through a cascade of multiple periodic oscillations of the vesicle shape. We summarize our results in a phase diagram in the parameter plane (degree of confinement, flow strength). This finding highlights the level of complexity of a flowing vesicle in the small Reynolds number where the flow is laminar in the absence of vesicles and can be rendered turbulent due to elasticity of vesicles.
description: acceptd for Phys. Rev. E