cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
A simple model system to study coupled photonic crystal microcavities
Creators: name: Perrier, A.
name: Guilloit, Y.
name: Cren, E. Le
name: Dumeige, Y.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics Education (physics.ed-ph)
subject: FOS: Physical sciences

description: In this paper, we designed and experimentally studied several systems of standard coaxial cables with different impedances which mimic the operation of so called photonic structures like coupled photonic crystal microcavities. Using elementary cells of half-meter long coaxial cables we got resonances around 100MHz, a range of frequencies that can be easily studied with a standard teaching laboratory apparatus. Resonant mode frequency splitting has been obtained in the case of double and triple coupled cavities. A good agreement between experimental results and transfer matrix model has been observed. The aim here is to demonstrate that standard coaxial cable system is a very cheap way and an easy to implement structure to explain to undergraduate students complex phenomena that usually occur in the optical domain.
Buyer and Seller Responses to an Adverse Food Safety Event: The Case of Frozen Salmon in Alberta
Creators: name: Maynard, Leigh J.
name: Saghaian, Sayed H.
name: Nickoloff, Megan
name: Maynard, Leigh J.
name: Saghaian, Sayed H.
name: Nickoloff, Megan
Publisher: name: Unknown
Year: 2008
Subjects: subject: Demand and Price Analysis
subject: Food Consumption/Nutrition/Food Safety
subject: Research Methods/ Statistical Methods
subject: salmon
subject: scanner data
subject: food safety
subject: demand
subject: directed acyclic graphs

description: Fish is a low-fat protein source high in omega-3 fatty acids, but in 2004 consumers also heard that farmed salmon had high levels of polychlorinated biphenyl (PCBs). This research evaluated how Canadian consumers and processors reacted to the conflicting health messages. Demand estimates and time-series analysis of 2001-2006 frozen meat scanner data in Alberta, Canada show a significant drop in salmon expenditure share following the PCB finding. The industry responded by launching low-priced wild salmon products, which contributed to significant demand expansion. The analysis illustrates how a food safety threat was averted and even served as a catalyst for growth.
Saturation in DIS at low x
Creators: name: Schildknecht, D.
Publisher: name: arXiv
Year: 2004
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Saturation at low x appears as an almost unaboidable consequence of the two-gluon excange generic structure.
description: 3 pages, espcrc2.sty, Presented at Diffraction 2004, Cala Conone, Italy
BADIIY ASARLARNI O'QITISHDA QO'LLANILADIGAN BADIIY TAHLILLAR.
Creators: name: Umurova, Farangiz
Publisher: name: Zenodo
Year: 2024

description: Badiiy asarlarni o'qitish jarayoni, talabalar uchun adabiy bilimlarni shakllantirishdan tashqari, ularning badiiy fikrlash va tahlil qilish ko'nikmalarini rivojlantirishga ham qaratilgan. Badiiy asarlar, insoniyatning turli his-tuyg'ularini, fikrlarini va tajribalarini ifodalovchi muhim madaniy merosdir. Ular nafaqat estetik qiymatga ega, balki ijtimoiy, tarixiy va psixologik kontekstlarda ham chuqur ma'no va ahamiyatga ega.
Industry-Academic Partnerships – Benefit or Burden?
Creators: name: Baker, Gregory A.
name: Wysocki, Allen F.
name: House, Lisa
name: Batista, Juan C.
name: Baker, Gregory A.
name: Wysocki, Allen F.
name: House, Lisa
name: Batista, Juan C.
Publisher: name: Unknown
Year: 2008
Subjects: subject: Industrial Organization
subject: Teaching/Communication/Extension/Profession
subject: industry partnerships
subject: industry collaboration

description: In an applied discipline such as agribusiness management, there are many opportunities for collaboration between academia and industry. This article highlights opportunities for industry-academic partnerships through research, sabbatical leaves, consulting, outreach, student enrichment activities, and industry advisory boards. The principal benefits and pitfalls associated with each type of collaboration are discussed along with tips for managing industry-academic partnerships.
Detection of metastable electronic states by Penning trap mass spectrometry
Creators: name: Schüssler, Rima Xenia
name: Bekker, Hendrik
name: Braß, Martin
name: Cakir, Halil
name: López-Urrutia, José R. Crespo
name: Door, Menno
name: Filianin, Pavel
name: Harman, Zoltan
name: Haverkort, Maurits W.
name: Huang, Wen Jia
name: Indelicato, Paul
name: Keitel, Christoph Helmut
name: König, Charlotte Maria
name: Kromer, Kathrin
name: Müller, Marius
name: Novikov, Yuri N.
name: Rischka, Alexander
name: Schweiger, Christoph
name: Sturm, Sven
name: Ulmer, Stefan
name: Eliseev, Ssergey
name: Blaum, Klaus
Publisher: name: arXiv
Year: 2020
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: FOS: Physical sciences

description: State-of-the-art optical clocks achieve fractional precisions of $10^{-18}$ and below using ensembles of atoms in optical lattices or individual ions in radio-frequency traps. Promising candidates for novel clocks are highly charged ions (HCIs) and nuclear transitions, which are largely insensitive to external perturbations and reach wavelengths beyond the optical range, now becoming accessible to frequency combs. However, insufficiently accurate atomic structure calculations still hinder the identification of suitable transitions in HCIs. Here, we report on the discovery of a long-lived metastable electronic state in a HCI by measuring the mass difference of the ground and the excited state in Re, the first non-destructive, direct determination of an electronic excitation energy. This result agrees with our advanced calculations, and we confirmed them with an Os ion with the same electronic configuration. We used the high-precision Penning-trap mass spectrometer PENTATRAP, unique in its synchronous use of five individual traps for simultaneous mass measurements. The cyclotron frequency ratio $R$ of the ion in the ground state to the metastable state could be determined to a precision of $δR=1\cdot 10^{-11}$, unprecedented in the heavy atom regime. With a lifetime of about 130 days, the potential soft x-ray frequency reference at $ν=4.86\cdot 10^{16}\,\text{Hz}$ has a linewidth of only $Δν\approx 5\cdot 10^{-8}\,\text{Hz}$, and one of the highest electronic quality factor ($Q=\fracν{Δν}\approx 10^{24}$) ever seen in an experiment. Our low uncertainty enables searching for more HCI soft x-ray clock transitions, needed for promising precision studies of fundamental physics in a thus far unexplored frontier.
title: Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐµÑ Ð½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð³Ð¾ÑÑÑÐµÐ¹ Ð¾Ð±ÑÑÐ¼Ð½Ð¾Ð¹ ÑÑÐ°Ð¼Ð¿Ð¾Ð²ÐºÐ¸ Ð¸Ð·Ð´ÐµÐ»Ð¸Ð¹ Ð¸Ð· ÑÐ¿ÐµÑÐµÐ½Ð½ÑÑ Ð¿ÑÐ¾ÑÐ¸Ð»Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð·Ð°Ð³Ð¾ÑÐ¾Ð²Ð¾Ðº
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
title: Development and study of the technology of hot volumetric stamping of products from specially profiled blanks
Creators: name: ÐÑÑÐºÐ¸Ð½, ÐÐ¸ÐºÐ¸ÑÐ°
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2024
Subjects: ÐÐ¾ÑÐ¾ÑÐºÐ¾Ð²Ð°Ñ Ð¼ÐµÑÐ°Ð»Ð»ÑÑÐ³Ð¸Ñ
ÐÐ¾Ð¼Ð¿Ð¾Ð·Ð¸ÑÐ¸Ð¾Ð½Ð½ÑÐµ Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»Ñ Ð¿Ð¾ÑÐ¾ÑÐºÐ¾Ð²ÑÐµ
ÐÐ¾Ð¼Ð¿ÑÑÑÐµÑÐ½Ð¾Ðµ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ðµ
Ð¨ÑÐ°Ð¼Ð¿Ð¾Ð²ÐºÐ° Ð¼ÐµÑÐ°Ð»Ð»Ð¾Ð² Ð³Ð¾ÑÑÑÐ°Ñ
ÐÐ°Ð³Ð¾ÑÐ¾Ð²ÐºÐ¸

description: Ð¦ÐµÐ»Ñ ÑÐ°Ð±Ð¾ÑÑ â Ð Ð°Ð·ÑÐ°Ð±Ð¾ÑÐºÐ° Ð¸ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð³Ð¾ÑÑÑÐµÐ¹ Ð¾Ð±ÑÐµÐ¼Ð½Ð¾Ð¹ ÑÑÐ°Ð¼Ð¿Ð¾Ð²ÐºÐ¸ Ð¸Ð·Ð´ÐµÐ»Ð¸Ð¹ Ð¸Ð· ÑÐ¿ÐµÑÐµÐ½Ð½ÑÑ Ð¿ÑÐ¾ÑÐ¸Ð»Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð·Ð°Ð³Ð¾ÑÐ¾Ð²Ð¾Ðº. ÐÐ±ÑÐµÐºÑ Ð¸ÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ñ â ÑÐ¸Ð¿Ð¾Ð²Ð°Ñ Ð´ÐµÑÐ°Ð»Ñ Â«Ð´Ð¸ÑÐº ÑÑÑÐ¿ÐµÐ½ÑÐ°ÑÑÐ¹Â», Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»: Ð¶ÐµÐ»ÐµÐ·Ð½ÑÐ¹ Ð¿Ð¾ÑÐ¾ÑÐ¾Ðº ÐÐÐ¡ 100.29; ÑÐ¸Ð¿Ð¾Ð²Ð°Ñ Ð´ÐµÑÐ°Ð»Ñ Â«Ð²ÑÑÐ»ÐºÐ° Ñ Ð±ÑÑÑÐ¾Ð¼Â», Ð¼Ð°ÑÐµÑÐ¸Ð°Ð»: Ð¼ÐµÐ´Ð½ÑÐ¹ Ð¿Ð¾ÑÐ¾ÑÐ¾Ðº ÐÐÐ¡-1. ÐÐ° Ð¾ÑÐ½Ð¾Ð²Ðµ ÑÐ°ÑÑÐµÑÐ¾Ð² Ð¸ Ð¼Ð¾Ð´ÐµÐ»Ð¸ÑÐ¾Ð²Ð°Ð½Ð¸Ñ Ð² ÐºÐ¾Ð¼Ð¿Ð»ÐµÐºÑÐµ De-Form Ð¾Ð¿ÑÐµÐ´ÐµÐ»ÐµÐ½Ñ Ð¾ÑÐ½Ð¾Ð²Ð½ÑÐµ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¸Ðµ Ð¿Ð°ÑÐ°Ð¼ÐµÑÑÑ Ð¿ÑÐ¾ÑÐµÑÑÐ°. ÐÑÑÐ»ÐµÐ´Ð¾Ð²Ð°Ð½Ð¸Ðµ ÐºÐ¾Ð¼Ð±Ð¸Ð½Ð¸ÑÐ¾Ð²Ð°Ð½Ð½Ð¾Ð¹ ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸Ð¸ Ð­Ð¡Ð Ð¿ÑÐ¾ÑÐ¸Ð»Ð¸ÑÐ¾Ð²Ð°Ð½Ð½ÑÑ Ð·Ð°Ð³Ð¾ÑÐ¾Ð²Ð¾Ðº Ð¸ ÐÐÐ¨ ÑÐ¿ÐµÑÐµÐ½Ð½ÑÑ Ð¸Ð·Ð´ÐµÐ»Ð¸Ð¹, ÑÐ°Ð·ÑÐ°Ð±Ð¾ÑÐ°Ð½ ÑÐµÑÑÐµÐ¶ Ð´ÐµÑÐ°Ð»Ð¸, ÑÐ¿ÑÐ¾ÐµÐºÑÐ¸ÑÐ¾Ð²Ð°Ð½Ñ Ð¾Ð¿ÑÑÐ½Ð¾-Ð¿ÑÐ¾Ð¼ÑÑÐ»ÐµÐ½Ð½ÑÐµ ÑÑÐ°Ð¼Ð¿Ñ Ð´Ð»Ñ ÐÐÐ¨, ÑÐ¾ÑÑÐ°Ð²Ð»ÐµÐ½Ð° Ð¼Ð°ÑÑÑÑÑÐ½Ð°Ñ ÐºÐ°ÑÑÐ° ÑÐµÑÐ½Ð¾Ð»Ð¾Ð³Ð¸ÑÐµÑÐºÐ¾Ð³Ð¾ Ð¿ÑÐ¾ÑÐµÑÑÐ° Ð¸ Ð¿Ð»Ð°Ð½ Ð¿ÑÐ¾Ð¸Ð·Ð²Ð¾Ð´ÑÑÐ²ÐµÐ½Ð½Ð¾Ð³Ð¾ ÑÑÐ°ÑÑÐºÐ°. ÐÑÐ¸Ð²ÐµÐ´ÐµÐ½Ñ ÑÐ¿Ð¾ÑÐ¾Ð±Ñ Ð¾ÑÐµÐ½ÐºÐ¸ ÑÐºÐ¾Ð½Ð¾Ð¼Ð¸ÑÐµÑÐºÐ¾Ð¹ ÑÑÑÐµÐºÑÐ¸Ð²Ð½Ð¾ÑÑÐ¸ Ð¿ÑÐ¾ÑÐµÑÑÐ°, Ð¼ÐµÑÑ Ð±ÐµÐ·Ð¾Ð¿Ð°ÑÐ½Ð¾ÑÑÐ¸ Ð¿ÑÐ¸ ÑÐ°Ð±Ð¾ÑÐµ Ð² Ð¿ÑÐµÑÑÐ¾Ð²ÑÑ ÑÐµÑÐ°Ñ.
description: The purpose of the work is to development and study of the technology of hot volumetric stamping of products from specially profiled blanks. The object of the study is a typical detail âsteppe diskâ, material: iron powder ANS 100.29; Typical detail âbuilding with a bacterâ, material: copper powder PMS-1. Based on the calculation and simulation in the De-Form complex, the main technological parameters of the process are determined. A study of the combined technology of the ESP of profiled blanks and GOSH of special product, a drawing of parts has been developed, experimental and industrial stamps were designed, a route map of the technological process and the plan of the production site were drawn up. Methods of assessing the economic efficiency of the process, security measures when working in press workshops are given.
Partially obscured quasars in the Sloan Digital Sky Survey Early Data Release
Creators: name: Dong, Xiao-Bo
name: Zhou, Hong-Yan
name: Wang, Ting-Gui
name: Wang, Jun-Xian
name: Li, Cheng
name: Zhou, You-Yuan
Publisher: name: arXiv
Year: 2004
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We have compiled a sample of 21 low redshift (z < 0.3), luminous active galactic nuclei (AGN) with large Balmer decrements (Halpha/Hbeta > 7) using the galaxy and QSO catalogs of the Sloan Digital Sky Survey Early Data Release. Using this sample we attempt to determine the fraction of quasars with large internal absorption. We find that these AGN have Strong [O III] and broad Halpha emission, and that starlight dominates the spectra in the blue band, suggesting that these objects are heavily reddened. Their narrow emission line ratios are similar to those of Seyfert 2 galaxies, yet the average [O III]5007 emission is ~10 times more luminous. Applying the empirical relation between the optical continuum and the Balmer line luminosity for blue quasars, we find that the intrinsic luminosities of these 21 objects are in the range for quasars. We propose that they are obscured, intermediate type quasars analogous to type 1.8 and 1.9 Seyfert galaxies. The ratio of these optically selected, intermediate type quasars to type 1 quasars are found to be around 1, similar to that for local Seyfert galaxies. Preliminary study indicates that most of these quasars are hosted in early type galaxies.
description: Accepted by ApJ
Increasing inhibition flame resistance for PVC composite by using 2ZnO.3B2O3.3.5H2O-Sb2O3 mixture
Creators: name: I.Al-Mosawi, Ali
name: I.Al-Zubadi, Ali
name: H.Al-Maamori, Mohammed
Publisher: name: figshare
Year: 2020
Subjects: subject: 91205 Functional Materials
subject: FOS: Materials engineering

description: A Physical mixture from 2ZnO.3B2O3.3.5H2O - Sb2O3 was used to increase inhibition to flame for PVC composite . A coating layer of (4mm) thickness from 2ZnO.3B2O3.3.5H2O was used first , It was tested by Oxyacetylene torch flame with flame exposure intervals 10, 20 mm, to find out the extent of resistance to the spread of flame . Then 2ZnO.3B2O3.3.5H2O was mixed with (10,15,20,25,30)%wt. Sb2O3 in order to form a flame retardant compound has the ability to raise the efficiency of composite material for flame retardancy . This new material was also exposed to the same conditions of the first test inhibitor. the best results was obtained with large exposed interval and mixture 2ZnO.3B2O3.3.5H2O -30% Sb2O3.
THE CONCEPT OF FAMILY IN ENGLISH LINGUISTIC CULTURE.
Creators: name: Nasimova, Shahnoza
Publisher: name: Zenodo
Year: 2024

description: This research paper explores the concept of family within the framework of English linguistic culture, tracing its origins from ancient Roman society to contemporary interpretations. It examines the etymological roots of the term "family," deriving from the Latin "familia," and discusses its evolution in meaning and significance across different historical periods. The paper highlights the transition from a broad collective understanding of family in ancient cultures to the modern emphasis on the nuclear family structure in English society, characterized by intimate relationships among a limited number of family members. Additionally, it addresses the impact of globalization, cultural exchanges, and mass media on the perception and values associated with family life. The study also delves into the dynamics of blended families, family functions, and the role of cultural influences on family structures, emphasizing the importance of family as a social institution for emotional and social development. Ultimately, the paper contemplates the future of family structures in response to evolving societal norms and the implications for familial relationships across generations.
Mechanical behavior of NBR-PVC mixture after immersion in different media
Creators: name: H.Al-Maamori, Mohammed
name: I.Al-Mosawi, Ali
name: Yasser, Haider A.
Publisher: name: figshare
Year: 2020
Subjects: subject: 91202 Composite and Hybrid Materials
subject: FOS: Materials engineering

description: Polymer blends are capable of providing materials with extended useful properties beyond the range that can be obtained from single polymer equivalents. Effect of immersion in oil and water on hardness of Acrylonitrile butadiene rubber (NBR) Blends reinforced by (30,50,and 70%) PVC were studied in this paper. The results from this work show that the strength will impairment after immersion in oil and water as a result of the penetration of the oil and water molecules within NBR-PVC blend , which increase the extending between the main chains and cause the weakening in secondary forces of (vander walls) and crosslink so that the Brownian motion of molecular chains will increases Which leads to a decrease in hardness.
Charting La Vía Chilena : national imagining and textbook history
Creators: name: Belnave, Stephen
Publisher: name: University of British Columbia
Year: 2009

description: This paper explores the relationship between regime politics, the political orientation of textbook authors and editors, and the national narratives of Chilean school history textbooks from the 1960's, 1970's and 1980's. It explains how history textbooks were used to cement a Conservative nationalist vision of Chile's past, and argues that the nationalist rhetoric of history textbooks was used as a political tool both in support of the Pinochet regime and against Chilean Marxists. Whereas these efforts were undertaken in the name of "national reconciliation," I argue that the aggressive re-construction of Chilean national imagining by supporters of the Pinochet regime only served to polarize Chilean national imagining between the political left and right. I conclude that the writing of less divisive or more inclusive national narratives will not fully address this legacy of the dictatorship. Instead, Chilean students should be encouraged to criticize the political abuses of shared nationalist discourses that took place in the 1970's and 1980's in order to come to terms with recent Chilean history.
Unpredictable basin boundaries in restricted six-body problem with square configuration
Creators: name: Kumar, Vinay
name: Idrisi, M. Javed
name: Ullah, M. Shahbaz
Publisher: name: arXiv
Year: 2020
Subjects: subject: Chaotic Dynamics (nlin.CD)
subject: Dynamical Systems (math.DS)
subject: FOS: Physical sciences
subject: FOS: Mathematics
subject: (2010): 70H07, 37N05

description: The present work deals with the recently introduced restricted six body-problem with square configuration. It is determined that the total number of libration points are twelve and twenty for the mass parameter $0< μ< 0.25$. The multivariate form of Newton-Raphson scheme is used to discuss the basin of attraction. Different aspects of the basin of attraction are investigated and explained in detail. The complex combination of the different basins is found along the boundaries. The concept of basin entropy is used to unveil the nature of the boundaries. For $μ= 0.22$ and $0.23$, the basin of attraction is unpredictable throughout. It is observed that for all values of the mass parameter $μ$, the basin boundaries are highly unpredictable. Further, We have investigated the presence of Wada basin boundary in the basin of attraction.
How To Avoid Killing The Chicken That Lays The Golden Eggs: An Analysis Of The Potential Impacts Of An Export Tax On Raw Tobacco In Mozambique.
Creators: name: Benfica, Rui M.S.
name: Miguel, Arlindo
name: Zandamela, Julieta
name: De Sousa, Natercia
name: Boughton, Duncan
name: Tschirley, David L.
name: De Marrule, Higino Francisco
name: Benfica, Rui M.S.
name: Miguel, Arlindo
name: Zandamela, Julieta
name: De Sousa, Natercia
name: Boughton, Duncan
name: Tschirley, David L.
name: De Marrule, Higino Francisco
Publisher: name: Unknown
Year: 2004
Subjects: subject: Crop Production/Industries
subject: International Relations/Trade
subject: food security
subject: food policy
subject: Mozambique

description: Tobacco production in Mozambique has grown very rapidly over the past seven years. From 1,500 tons in the 1996/7 agricultural season, national production of raw tobacco has increased every year to reach approximately 50,000 tons in 2003/4 (Figure 1). Over the same period the estimated number of tobacco growing households has increased from 6,000 to more than 120,000. There are currently five major firms (or partnerships) operating in the country promoting both smallholder contract farming schemes and larger scale commercial operations. The impact of this rapid expansion of the tobacco sector on rural smallholder household incomes and economic growth has been dramatic.
description: Research Results from the Policy Analysis Department, MADER – Directorate of Economics, In collaboration with Michigan State University
Enlargements of Categories
Creators: name: Bruenjes, Lars
name: Serpe, Christian
Publisher: name: arXiv
Year: 2004
Subjects: subject: Category Theory (math.CT)
subject: FOS: Mathematics
subject: 03H05,18A30,18E30,14A99

description: In order to apply nonstandard methods to modern algebraic geometry, as a first step in this paper we study the applications of nonstandard constructions to category theory. It turns out that many categorial properties are well behaved under enlargements.
description: 34 pages
Redshift Evolution of Green Valley Galaxies in Different Environments from the Hyper Suprime-Cam Survey
Creators: name: Jian, Hung-Yu
name: Lin, Lihwai
name: Koyama, Yusei
name: Tanaka, Ichi
name: Umetsu, Keiichi
name: Hsieh, Bau-Ching
name: Higuchi, Yuichi
name: Oguri, Masamune
name: More, Surhud
name: Komiyama, Yutaka
name: Kodama, Tadayuki
name: Nishizawa, Atsushi J.
name: Chang, Yu-Yen
Publisher: name: arXiv
Year: 2020
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: FOS: Physical sciences

description: Green valley galaxies represent the population that is likely to transition from the star-forming to the quiescent phases. To investigate the role of the environment in quenching star formation, we use the wide-field data from the Hyper Suprime-Cam Strategic Subaru Proposal survey to quantify the frequency of green valley galaxies in different environments and their redshift evolution. We find that the green valley fraction, in general, is less than 20% in any redshift and environment. The green valley fraction, when normalized to the total population, is higher in the field than that in groups or clusters and decreases with a decreasing redshift and increasing mass. The lower fraction of transitional galaxies in denser environments could be a consequence of the lack of star-forming galaxies, which could be the progenitors of green valley galaxies. To assess the effect of the environment on star formation quenching, we define the effective green valley fraction as the ratio of the number of green valley galaxies to that of nonquiescent galaxies only. The effective green valley fraction for field galaxies is lower than that for group or cluster galaxies, which reveals a strong positive mass dependence and mild redshift evolution. Moreover, the specific star formation rate (sSFR) is reduced by 0.1-0.3 dex in groups or clusters. Our results thus imply that an ongoing slow quenching process has been acting in the dense environment since z~1.
description: 18 pages, 6 figures, and 5 tables. Accepted by ApJ
Glassy behaviour of sticky spheres: What lies beyond experimental timescales?
Creators: name: Fullerton, Christopher J.
name: Berthier, Ludovic
Publisher: name: arXiv
Year: 2020
Subjects: subject: Soft Condensed Matter (cond-mat.soft)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We use the swap Monte Carlo algorithm to analyse the glassy behaviour of sticky spheres in equilibrium conditions at densities where conventional simulations and experiments fail to reach equilibrium, beyond predicted phase transitions and dynamic singularities. We demonstrate the existence of a unique ergodic region comprising all the distinct phases previously reported, except for a phase-separated region at strong adhesion. All structural and dynamic observables evolve gradually within this ergodic region, the physics evolving smoothly from well-known hard sphere glassy behaviour at small adhesions and large densities, to a more complex glassy regime characterised by unusually-broad distributions of relaxation timescales and lengthscales at large adhesions.
description: 6 pages, 4 figures
N,N,N,̕N-̕tetrakis (2-pyridylmethyl) ethylenediamine-induced depletion of the labile intracellular pool of zinc suppressed the growth of human breast cancer cells
Creators: name: Wu, Bella Wen
Publisher: name: University of British Columbia
Year: 2009

description: Zinc is critically involved in many physiological processes including growth. Increasing evidence has revealed the importance of the labile intracellular pool of zinc (LIPZ) in zinc-mediated growth regulation, especially apoptosis, or programmed cell death. However, the mechanisms whereby zinc regulates apoptosis are largely unknown. Zinc has been shown to be associated with several key apoptotic regulatory factors i.e. p53 and members of the Bcl-2 family. We hypothesized that deprivation of LIPZ would reduce cell survival and promote cell death in human breast cancer cells. The overall objectives were to investigate the effects of LIPZ depletion on the growth of human breast cancer cells and to explore the possible mechanisms involved. Three human breast cancer cell lines (MCF-7, MDA-MB-231 and T47D) and a fibrocystic breast cell line (MCF-10), were treated with various concentrations of the intracellular zinc chelator (NNN'N'-tetrakis(2-pyridylmethyl) ethylenediamine; TPEN). After various incubation durations, total cellular zinc concentration and the LIPZ size were quantitated. Cell growth was assessed using cell number counts, cell viability and profiles of cell survival and cell death (necrosis and apoptosis). The expression profile of p53, gadd45, bcl-2 and bax were determined using reverse transcription-polymerase chain reaction (RT-PCR). TPEN induced a dose-dependent reduction in the LIPZ size, but had no effect on the total cellular zinc concentration. TPENinduced depletion of LLPZ led to decreased cell viability and survival, and increased necrosis and apoptosis, indicating that an adequate size of LIPZ was critical to the growth of breast cancer and fibrocystic breast cells. The depletion of LIPZ was also associated with alterations in p53, gadd45, Bcl-2 and Bax mRNA levels in two of the breast cancer cell lines (MDAMB- 231 and T47D) investigated. Overall, this study demonstrated that LIPZ was important to breast cancer cell growth. The TPEN-induced depletion LIPZ was cell line-specific, and was independent of total cellular zinc content. The reduced LIPZ size was associated with reduced growth of human breast cancer cells through increased cell death in a cell linespecific manner. The elevated levels of apoptotic cell death were associated with altered mRNA level of apoptotic regulatory genes.
Preliminary results in using Deep Learning to emulate BLOB, a nuclear interaction model
Creators: name: Ciardiello, A.
name: Asai, M.
name: Caccia, B.
name: Cirrone, G. A. P.
name: Colonna, M.
name: Dotti, A.
name: Faccini, R.
name: Giagu, S.
name: Messina, A.
name: Napolitani, P.
name: Pandola, L.
name: Wright, D. H.
name: Mancini-Terracciano, C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computational Physics (physics.comp-ph)
subject: Nuclear Experiment (nucl-ex)
subject: Medical Physics (physics.med-ph)
subject: FOS: Physical sciences

description: Purpose: A reliable model to simulate nuclear interactions is fundamental for Ion-therapy. We already showed how BLOB ("Boltzmann-Langevin One Body"), a model developed to simulate heavy ion interactions up to few hundreds of MeV/u, could simulate also $^{12}$C reactions in the same energy domain. However, its computation time is too long for any medical application. For this reason we present the possibility of emulating it with a Deep Learning algorithm. Methods: The BLOB final state is a Probability Density Function (PDF) of finding a nucleon in a position of the phase space. We discretised this PDF and trained a Variational Auto-Encoder (VAE) to reproduce such a discrete PDF. As a proof of concept, we developed and trained a VAE to emulate BLOB in simulating the interactions of $^{12}$C with $^{12}$C at 62 MeV/u. To have more control on the generation, we forced the VAE latent space to be organised with respect to the impact parameter ($b$) training a classifier of $b$ jointly with the VAE. Results: The distributions obtained from the VAE are similar to the input ones and the computation time needed to use the VAE as a generator is negligible. Conclusions: We show that it is possible to use a Deep Learning approach to emulate a model developed to simulate nuclear reactions in the energy range of interest for Ion-therapy. We foresee the implementation of the generation part in C++ and to interface it with the most used Monte Carlo toolkit: Geant4.
description: 8 pages, 9 figures, Accepted by Physica Medica
Bipartite subspaces having no LOCC-distinguishable bases
Creators: name: Watrous, John
Publisher: name: arXiv
Year: 2005
Subjects: subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: It is proved that there exist subspaces of bipartite tensor product spaces that have no orthonormal bases that can be perfectly distinguished by means of LOCC protocols. A corollary of this fact is that there exist quantum channels having sub-optimal classical capacity even when the receiver may communicate classically with a third party that represents the channel's environment.
description: 12 pages. Two references added in version 2
Como Evitar Matar a Galinha dos Ovos de Ouro: Uma Análise dos Potenciais Impactos de Uma Taxa Sobre as Exportações de Tabaco Não Processado em Moçambique
Creators: name: Benfica, Rui M.S.
name: Miguel, Arlindo
name: Zandamela, Julieta
name: De Sousa, Natercia
name: Boughton, Duncan
name: Tschirley, David L.
name: De Marrule, Higino Francisco
name: Benfica, Rui M.S.
name: Miguel, Arlindo
name: Zandamela, Julieta
name: De Sousa, Natercia
name: Boughton, Duncan
name: Tschirley, David L.
name: De Marrule, Higino Francisco
Publisher: name: Unknown
Year: 2004
Subjects: subject: Crop Production/Industries
subject: International Relations/Trade
subject: food security
subject: food policy
subject: Mozambique

description: Tobacco production in Mozambique has grown very rapidly over the past seven years. From 1,500 tons in the 1996/7 agricultural season, national production of raw tobacco has increased every year to reach approximately 50,000 tons in 2003/4 (Figure 1). Over the same period the estimated number of tobacco growing households has increased from 6,000 to more than 120,000. There are currently five major firms (or partnerships) operating in the country promoting both smallholder contract farming schemes and larger scale commercial operations. The impact of this rapid expansion of the tobacco sector on rural smallholder household incomes and economic growth has been dramatic.
description: Resultados das Investigações do Departamento de Análise de Políticas, MADER - Direcção de Economia, em colaboração com a Universidade Estadual de Michigan
Enhancing Gravitational-Wave Science with Machine Learning
Creators: name: Cuoco, Elena
name: Powell, Jade
name: Cavaglià, Marco
name: Ackley, Kendall
name: Bejger, Michal
name: Chatterjee, Chayan
name: Coughlin, Michael
name: Coughlin, Scott
name: Easter, Paul
name: Essick, Reed
name: Gabbard, Hunter
name: Gebhard, Timothy
name: Ghosh, Shaon
name: Haegel, Leila
name: Iess, Alberto
name: Keitel, David
name: Marka, Zsuzsa
name: Marka, Szabolcs
name: Morawski, Filip
name: Nguyen, Tri
name: Ormiston, Rich
name: Puerrer, Michael
name: Razzano, Massimiliano
name: Staats, Kai
name: Vajente, Gabriele
name: Williams, Daniel
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: General Relativity and Quantum Cosmology (gr-qc)
subject: FOS: Physical sciences

description: Machine learning has emerged as a popular and powerful approach for solving problems in astrophysics. We review applications of machine learning techniques for the analysis of ground-based gravitational-wave detector data. Examples include techniques for improving the sensitivity of Advanced LIGO and Advanced Virgo gravitational-wave searches, methods for fast measurements of the astrophysical parameters of gravitational-wave sources, and algorithms for reduction and characterization of non-astrophysical detector noise. These applications demonstrate how machine learning techniques may be harnessed to enhance the science that is possible with current and future gravitational-wave detectors.
Ultra-High-Energy Tau Neutrino Cross Sections with GRAND and POEMMA
Creators: name: Denton, Peter B.
name: Kini, Yves
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: High Energy Physics - Experiment (hep-ex)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Next generation neutrino experiments will push the limits in our understanding of astroparticle physics in the neutrino sector to energies orders of magnitude higher than the current state-of-the-art high-energy neutrino experiment, IceCube. These experiments will use neutrinos to tell us about the most extreme environments in the universe, while simultaneously leveraging these extreme environments as probes of neutrino properties at the highest energies accessible in the foreseeable future: $E\sim10^9$ GeV. At these energies neutrinos are readily absorbed in the Earth. Assuming an isotropic distribution, by looking at how the flux varies as a function of angle through the Earth, we show that it is possible to extract the $ν_τ$-$N$ cross section with precision at the $\sim20\%$ level ($1σ$ assuming Wilks' theorem) given $N_{\rm events}\sim100$ events.
description: 7 pages, 5 figures, comments welcome; v2: minor changes, matches published version
Methode zur Ermittlung optimaler Rad- und Reifendimensionen in der frühen Entwicklungsphase von Personenkraftwagen
Creators: name: Strigel, Adrian
Publisher: name: KIT Scientific Publishing
Year: 2024
Subjects: Reifen
Rad
Reifendimension
Raddimension
Funktionale Reifeneigenschaften (FTC)
Tyre
Rim
Tyre dimension
Rim dimension
Functional Tyre Characteristics (FTC)

description: Im Rahmen der vorliegenden Arbeit werden Methoden entwickelt, welche die statistische Prognose funktionaler Eigenschaften für beliebige Dimensionskombinationen von Rad und Reifen ermöglichen. Hierbei werden Messdaten aus den Eigenschaftsbereichen Energieeffizienz, Fahrdynamik und Komfort statistisch ausgewertet, die Wirkzusammenhänge quantifiziert sowie hinsichtlich ihrer physikalischen Ursachen interpretiert.
Geometric regularity estimates for fully nonlinear elliptic equations with free boundaries
Creators: name: da Silva, J. V.
name: Leitão, R. A.
name: Ricarte, G. C.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Analysis of PDEs (math.AP)
subject: FOS: Mathematics

description: In this manuscript we study geometric regularity estimates for problems driven by fully nonlinear elliptic operators under strong absorption conditions. We establish improved geometric regularity along the free boundary, for a sharp value depending only on structural parameters. Non degeneracy among others measure theoretical properties are also obtained. A sharp Liouville result for entire solutions with controlled growth at infinity is proved. We also present a number of applications consequential of our findings.
Supplementary information on methods and results from Information transfer efficiency differs in wild chimpanzees and bonobos, but not social cognition
Creators: name: Girard-Buttoz, Cédric
name: Surbeck, Martin
name: Samuni, Liran
name: Tkaczynski, Patrick
name: Boesch, Christophe
name: Fruth, Barbara
name: Wittig, Roman M.
name: Hohmann, Gottfried
name: Crockford, Catherine
Publisher: name: The Royal Society
Year: 2020
Subjects: subject: 170299 Cognitive Science not elsewhere classified
subject: FOS: Psychology
subject: 60801 Animal Behaviour
subject: FOS: Biological sciences

description: Supplementary Figures and text for the manuscript.
Comment on "A non-interacting low-mass black hole -- giant star binary system"
Creators: name: Heuvel, Ed P. J. van den
name: Tauris, Thomas M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Thompson et al. (Reports, 1 November 2019, p. 637, Science) interpreted the unseen companion of the red giant star 2MASS J05215658+4359220 as most likely a black hole. We argue that if the red giant is about one solar mass, its companion can be a close binary consisting of two main-sequence stars. This would explain why no X-ray emission is detected from the system.
description: 3 pages, Author version of Technical Comment published in Science on 8 May, 2020
Leptogenesis, Yukawa Textures and Weak Basis Invariants
Creators: name: Branco, Gustavo C.
name: Rebelo, M. N.
name: Silva-Marcos, J. I.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We show that a large class of sets of leptonic texture zeros considered in the literature imply the vanishing of certain CP-odd weak-basis invariants. These invariant conditions enable one to recognize a flavour model corresponding to a set of texture zeros, when written in an arbitrary weak-basis where the zeros are not manifest. We also analyse the r\^ ole of texture zeros in allowing for a connection between leptogenesis and low-energy leptonic masses, mixing and CP violation. For some of the textures the variables relevant for leptogenesis can be fully determined in terms of low energy parameters and heavy neutrino masses.
description: 16 pages, no figures. One reference added, version submitted for publication
An analysis of systematic effects in finite size scaling studies using the gradient flow
Creators: name: Nada, Alessandro
name: Ramos, Alberto
Publisher: name: arXiv
Year: 2020
Subjects: subject: High Energy Physics - Lattice (hep-lat)
subject: FOS: Physical sciences

description: We propose a new strategy for the determination of the step scaling function $σ(u)$ in finite size scaling studies using the Gradient Flow. In this approach the determination of $σ(u)$ is broken in two pieces: a change of the flow time at fixed physical size, and a change of the size of the system at fixed flow time. Using both perturbative arguments and a set of simulations in the pure gauge theory we show that this approach leads to a better control over the continuum extrapolations. Following this new proposal we determine the running coupling at high energies in the pure gauge theory and re-examine the determination of the $Λ$-parameter, with special care on the perturbative truncation uncertainties.
description: 27 pages, 15 figures. Extended discussion on continuum extrapolation of step scaling function. Results unchanged
Main Lessons of the Agricultural Market Outlook and Food Security Conference in Mozambique for the Commercial Year 2004/2005.
Creators: name: Mabota, Anabela
name: Arlindo, Pedro
name: Paulo, Antonio M.
name: Donovan, Cynthia
name: Mabota, Anabela
name: Arlindo, Pedro
name: Paulo, Antonio M.
name: Donovan, Cynthia
Publisher: name: Unknown
Year: 2004
Subjects: subject: Food Security and Poverty
subject: Marketing
subject: FOS: Economics and business
subject: food security
subject: food policy
subject: Mozambique

description: During an evaluation of the user needs assessment of Agricultural Market Information System (SIMA) in 2000, many traders had expressed their willingness to provide more information to SIMA. The various types of information mentioned by traders included information on: (i) products available for sale or for purchase, (ii) quantities available for purchase, and (iii) who has the product and where to buy the product (SIMA Team, 2001). Other participants, such as Non- Governmental Organizations (NGOs) that work with groups of producers, had placed the emphasis on the need for information on new products and market opportunities for regional or international exports, as well as information relative to quality, quantities, person of contact, and other conditions of delivery.
description: Research Results from the Agricultural Market Information System (SIMA)- Dept. of Statistics and the Policy Analysis Department, MADER-Directorate of Economics
Rephrasing visual questions by specifying the entropy of the answer distribution
Creators: name: Terao, Kento
name: Tamaki, Toru
name: Raytchev, Bisser
name: Kaneda, Kazufumi
name: Satoh, Shun'ichi
Publisher: name: arXiv
Year: 2020
Subjects: subject: Computer Vision and Pattern Recognition (cs.CV)
subject: FOS: Computer and information sciences

description: Visual question answering (VQA) is a task of answering a visual question that is a pair of question and image. Some visual questions are ambiguous and some are clear, and it may be appropriate to change the ambiguity of questions from situation to situation. However, this issue has not been addressed by any prior work. We propose a novel task, rephrasing the questions by controlling the ambiguity of the questions. The ambiguity of a visual question is defined by the use of the entropy of the answer distribution predicted by a VQA model. The proposed model rephrases a source question given with an image so that the rephrased question has the ambiguity (or entropy) specified by users. We propose two learning strategies to train the proposed model with the VQA v2 dataset, which has no ambiguity information. We demonstrate the advantage of our approach that can control the ambiguity of the rephrased questions, and an interesting observation that it is harder to increase than to reduce ambiguity.
description: 10 pages
Principais Lições Do Seminário Sobre Perspectivas Para Comercialização Agrícola E Segurança Alimentar Em Moçambique Para O Ano Comercial 2004/2005.
Creators: name: Mabota, Anabela
name: Arlindo, Pedro
name: Paulo, Antonio M.
name: Donovan, Cynthia
name: Mabota, Anabela
name: Arlindo, Pedro
name: Paulo, Antonio M.
name: Donovan, Cynthia
Publisher: name: Unknown
Year: 2004
Subjects: subject: Food Security and Poverty
subject: Marketing
subject: FOS: Economics and business
subject: food security
subject: food policy
subject: Mozambique

description: During an evaluation of the user needs assessment of Agricultural Market Information System (SIMA) in 2000, many traders had expressed their willingness to provide more information to SIMA. The various types of information mentioned by traders included information on: (i) products available for sale or for purchase, (ii) quantities available for purchase, and (iii) who has the product and where to buy the product (SIMA Team, 2001). Other participants, such as Non- Governmental Organizations (NGOs) that work with groups of producers, had placed the emphasis on the need for information on new products and market opportunities for regional or international exports, as well as information relative to quality, quantities, person of contact, and other conditions of delivery.
description: Resultados das Investigações do SIMA-Dest e Departamento de Análise de Políticas MADER-Direcção de Economia
COVID-19 lockdown induces disease-mitigating structural changes in mobility networks
Creators: name: Schlosser, Frank
name: Maier, Benjamin F.
name: Jack, Olivia
name: Hinrichs, David
name: Zachariae, Adrian
name: Brockmann, Dirk
Publisher: name: arXiv
Year: 2020
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: In the wake of the COVID-19 pandemic many countries implemented containment measures to reduce disease transmission. Studies using digital data sources show that the mobility of individuals was effectively reduced in multiple countries. However, it remains unclear whether these reductions caused deeper structural changes in mobility networks, and how such changes may affect dynamic processes on the network. Here we use movement data of mobile phone users to show that mobility in Germany has not only been reduced considerably: Lockdown measures caused substantial and long-lasting structural changes in the mobility network. We find that long-distance travel was reduced disproportionately strongly. The trimming of long-range network connectivity leads to a more local, clustered network and a moderation of the "small-world" effect. We demonstrate that these structural changes have a considerable effect on epidemic spreading processes by "flattening" the epidemic curve and delaying the spread to geographically distant regions.
description: 20 pages, 8 figures
Integrated-photonic characterization of single-photon detectors for use in neuromorphic synapses
Creators: name: Buckley, Sonia M.
name: Tait, Alexander N.
name: Chiles, Jeffrey
name: McCaughan, Adam N.
name: Khan, Saeed
name: Mirin, Richard P.
name: Nam, Sae Woo
name: Shainline, Jeffrey M.
Publisher: name: arXiv
Year: 2020
Subjects: subject: Instrumentation and Detectors (physics.ins-det)
subject: Applied Physics (physics.app-ph)
subject: Optics (physics.optics)
subject: FOS: Physical sciences

description: We show several techniques for using integrated-photonic waveguide structures to simultaneously characterize multiple waveguide-integrated superconducting-nanowire detectors with a single fiber input. The first set of structures allows direct comparison of detector performance of waveguide-integrated detectors with various widths and lengths. The second type of demonstrated integrated-photonic structure allows us to achieve detection with a high dynamic range. This device allows a small number of detectors to count photons across many orders of magnitude in count rate. However, we find a stray light floor of -30 dB limits the dynamic range to three orders of magnitude. To assess the utility of the detectors for use in synapses in spiking neural systems, we measured the response with average incident photon numbers ranging from less than $10^{-3}$ to greater than $10$. The detector response is identical across this entire range, indicating that synaptic responses based on these detectors will be independent of the number of incident photons in a communication pulse. Such a binary response is ideal for communication in neural systems. We further demonstrate that the response has a linear dependence of output current pulse height on bias current with up to a factor of 1.7 tunability in pulse height. Throughout the work, we compare room-temperature measurements to cryogenic measurements. The agreement indicates room-temperature measurements can be used to determine important properties of the detectors.
Que Colheita e Preços Esperar para a Época de Comercialização Agrícola 2005/06? Expectativas dos Comerciantes de Pequena Escala no Centro e Norte de Moçambique.
Creators: name: Equipe Tecnica Do SIMA
name: Equipe Tecnica Do SIMA
Publisher: name: Unknown
Year: 2005
Subjects: subject: Food Security and Poverty
subject: Marketing
subject: FOS: Economics and business
subject: food security
subject: food policy
subject: Mozambique

description: This document presents the results of formal interviews about opinions of rural small-scale traders on incoming harvests for the agricultural season 2004/05. Although the perceptions vary in different regions in general, the small-scale traders believe that the supply of agricultural commodities will be lower than the supply of the previous season. Similarly to last year, Nhamatanda district is the greatest point of concentration in Beira corridor. The scenario was found in Ile and Milange districts in Zambézia province. Additionally, Malawi is still the most important destination of the maize brought in Northern Mozambique. In all regions, maize is the most commercialized commodity. Moreover, the prices at the beginning of commercial season are equal to the ones of the similar period of last year. However, there are high expectations of accented increase in prices among the traders.
description: Resultados das Investigações do SIMA-Dest e Departamento de Análise de Políticas MADER-Direcção de Economia
Analytic Perturbation Theory for Practitioners and Upsilon Decay
Creators: name: Shirkov, D. V.
name: Zayakin, A. V.
Publisher: name: arXiv
Year: 2005
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: Within the ghost-free Analytic Perturbation Theory (APT), devised in the last decade for low energy QCD, simple approximations are proposed for 3-loop analytic couplings and their effective powers, in both the space-like (Euclidean) and time-like (Minkowskian) regions, accurate enough in the large range (1--100 GeV) of current physical interest.\par Effectiveness of the new Model is illustrated by the example of $Υ(1\mathrm{S})$ decay where the standard analysis gives $α_s(M_Υ)=0.170\pm 0.004$ value that is inconsistent with the bulk of data for $α_s$. Instead, we obtain $α_s^{Mod}(M_Υ)=0.185\pm 0.005$ that corresponds to $α_s^{Mod}(M_Z)=0.120\pm 0.002 $ that is close to the world average.\par The issue of scale uncertainty for $Υ$ decay is also discussed.
description: 12 pages, 0 figures. Model slightly modified to increase its accuracy. Numerical results upgraded, references added. The issue of scale uncertainty is discussed