cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
High energy scattering in Quantum Chromodynamics
Creators: name: Gelis, Francois
name: Lappi, Tuomas
name: Venugopalan, Raju
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: In this series of three lectures, we discuss several aspects of high energy scattering among hadrons in Quantum Chromodynamics. The first lecture is devoted to a description of the parton model, Bjorken scaling and the scaling violations due to the evolution of parton distributions with the transverse resolution scale. The second lecture describes parton evolution at small momentum fraction x, the phenomenon of gluon saturation and the Color Glass Condensate (CGC). In the third lecture, we present the application of the CGC to the study of high energy hadronic collisions, with emphasis on nucleus-nucleus collisions. In particular, we provide the outline of a proof of high energy factorization for inclusive gluon production.
description: 52 pages, 31 figures, based on lectures given by FG at the Xth Hadron Physics workshop, March 2007, Florianopolis, Brazil
Declaration of Intention of Louis Jobert
Creators: name: United States. Bureau Of Naturalization
Publisher: name: No Publisher Supplied
Year: 1912

description: Declaration of Intention to become a citizen of the United States, as filled out and signed by: Louis Jobert  Applicant age:25Occupation: Wine BusinessCountry of Origin:FranceDate of Birth: 14 November 1886Sailed to the US aboard the vessel: La Savoie City of residence at time of declaration: Egg Harbor City NJDeclaration submitted and sworn on date:17 October 1912
How women entrepreneurs disrupt the traditional culture and economy: The case of women technology entrepreneurs in Lebanon
Creators: name: Itani, Mona S.
Publisher: name: University of Leicester
Year: 2021
Subjects: Uncategorized

description: Entrepreneurship has been traditionally investigated and explained from an economic perspective. In addition, mainstreaming gender-blind research has resulted in understanding entrepreneurship in masculine terms and associating it with male attributes such as risk-taking, aggression, and competitiveness. As shown in the literature e.g. (Ahl, 2006) despite policy support to increase women’s participation in entrepreneurship, one of the main inhibiting factors remains to be the understanding of entrepreneurship based on socially constructed masculine stereotypes. This is why researching women entrepreneurs and expanding the definition of entrepreneurship to include the understanding of how they view themselves and define their success in this domain is crucial. There is a rising field of women entrepreneurship research, especially in developing countries. In Lebanon, there has been a rise in women entrepreneurship training programs both in the urban and rural areas due to increased interest from the academic and civil society sector in this topic. Nevertheless, and although several studies have been done about women entrepreneurs, few took place in the Levant region in the Middle East and even fewer in the technology domain. To address this gap, this research aims to gain a good understanding of women entrepreneurs in technology in Lebanon within the specific context and environment that they operate and live in. Like the majority of research studies tackling female entrepreneurship in the MENA region, a qualitative methodology was adopted where in-depth semi-structured interviews were conducted to study fifteen female tech-entrepreneurs in Lebanon. This research answers the calls in the gendered entrepreneurship literature for adopting a social constructionist perspective in entrepreneurship research, using a gender-aware framework in researching women entrepreneurs, and contextualising women entrepreneurship research according to culture and self-perceptions. This research pays attention to gender construction while not focusing on comparing men and women. Using a gendered lens, findings concerning the progress and impact of the women's ventures were highlighted using the interviewees’ own criteria.
Asparagus monophyllus Baker 1875
Creators: name: Akhani, Hossein
name: Abdullahi, Hussaini
name: Ürker, Okan
name: Malekmohammadi, Maryam
Publisher: name: Zenodo
Year: 2024
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Liliopsida
Asparagales
Asparagaceae
Asparagus
Asparagus monophyllus

description: Asparagus monophyllus Baker (1875: 604).
Asparagus monophyllus has been reported only from Afghanistan and Pakistan not from Iran in Flora Iranica (Browicz 1990). Assadi (2023) reported the species from Hormozgan province: Tang-e Ghoochan, 75 km NW of Hajiabad, 1500m, Zaeifi, Sultanpour and Bahmanzadeh 333 and between Bandar-Abbas and Hajiabad, Sarchahan village, 680m, Dinarvand & Assadpour 772.
description: Published as part of Akhani, Hossein, Abdullahi, Hussaini, Ürker, Okan & Malekmohammadi, Maryam, 2024, Molecular phylogenetic studies on Asparagus (Asparagaceae) revealed the position of the highly endangered Irano-Turkish halophytic species A. lycaonicus P. H. Davis related to A. officinalis L., pp. 125-142 in Phytotaxa 646 (2) on page 137, DOI: 10.11646/phytotaxa.646.2.3, http://zenodo.org/record/13215319
Nanoscale periodicity in stripe-forming systems at high temperature: Au/W(110)
Creators: name: de la Figuera, J.
name: Leonard, F.
name: Stumpf, R.
name: Bartelt, N. C.
name: McCarty, K. F.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: FOS: Physical sciences

description: We observe using low-energy electron microscopy the self-assembly of monolayer-thick stripes of Au on W(110) near the transition temperature between stripes and the non-patterned (homogeneous) phase. We demonstrate that the amplitude of this Au stripe phase decreases with increasing temperature and vanishes at the order-disorder transition (ODT). The wavelength varies much more slowly with temperature and coverage than theories of stress-domain patterns with sharp phase boundaries would predict, and maintains a finite value of about 100 nm at the ODT. We argue that such nanometer-scale stripes should often appear near the ODT.
description: 5 pages
Declaration of Intention of Joseph Loos
Creators: name: United States. Bureau Of Naturalization
Publisher: name: No Publisher Supplied
Year: 1913

description: Declaration of Intention to become a citizen of the United States, as filled out and signed by:   Joseph LoosApplicant age: 32Occupation: WaiterCountry of Origin: AustriaDate of Birth: 23 August 1881Sailed to the US aboard the vessel:   DominionCity of residence at time of declaration: Atlantic City, NJDeclaration submitted and sworn on date: 08 September 1913
High Spatial Resolution Mid-IR Imaging of V838 Monocerotis: Evidence of New Circumstellar Dust Creation
Creators: name: Wisniewski, John P.
name: Clampin, Mark
name: Bjorkman, Karen S.
name: Barry, Richard K.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We report high spatial resolution 11.2 and 18.1 micron imaging of V838 Monocerotis obtained with Gemini Observatory's Michelle instrument in 2007 March. Strong emission is observed from the unresolved stellar core of V838 Mon in our Gemini imagery, and is confirmed by Spitzer MIPS 24 micron imaging obtained in 2007 April. The 2007 flux density of the unresolved mid-infrared emission component is 2 times brighter than that observed in 2004. No clear change in the net amount of 24 micron extended emission is observed between the 2004 and 2007 epoch Spitzer imagery. We interpret these data as evidence that V838 Mon has experienced a new circumstellar dust creation event. We suggest that this newly created dust has condensed from the expanding ejecta produced from V838 Mon's 2002 outburst events, and is most likely clumpy. We speculate that one (or more) of these clumps might have passed through the line-of-sight in late 2006, producing the brief multi-wavelength photometric event reported by Bond (2006) and Munari et al (2007). We detect no evidence of extended emission above a level of 1 mJy at 11.2 microns and 7 mJy at 18.1 microns over radial distances of 1860 - 93000 AU (0.3-15.0 arcsec) from the central source. Using the simple assumption that ejecta material expands at a constant velocity of 300-500 km/s, this gap of thermal emission suggests that no significant prior circumstellar dust production events have occurred within the past 900-1500 years.
description: 8 pages, accepted in ApJL, emulateapj5 format
Declaration of Intention of George Woerner
Creators: name: United States. Bureau Of Naturalization
Publisher: name: No Publisher Supplied
Year: 1912

description: Declaration of Intention to become a citizen of the United States, as filled out and signed by: George Woerner  Applicant age:20Occupation: BakerCountry of Origin:GermanyDate of Birth: 9 May 1882Sailed to the US aboard the vessel: Prince Albert  City of residence at time of declaration: Atlantic City NJDeclaration submitted and sworn on date:9 December 1912
A simple higher-order beam model that is represented by two kinematic variables and three section constants
Creators: name: Honickman, Hart
name: Kloppenborg, Stefan
Publisher: name: Zenodo
Year: 2021
Subjects: beam
transverse shear
shear deformation theory
warping
Timoshenko
zigzag
Saint-Venant
laminate
composite

description: The present document (Honickman_Kloppenborg_MMS_01_06_2021.pdf) is a postprint version of the following journal article: Hart Honickman and Stefan Kloppenborg, A simple higher-order beam model that is represented by two kinematic variables and three section constants, Mathematics and Mechanics of Solids, published online before print February 1, 2021, Copyright © 2021 (Hart Honickman and Stefan Kloppenborg). DOI: 10.1177/1081286520988876
description: For clarity, the term "postprint" herein denotes a draft document (or manuscript) that has been peer reviewed and accepted for publication in a journal, wherein said draft document (or manuscript) has not yet been typeset and formatted for publication in said journal. A "postprint" may be alternatively referred to as an "accepted manuscript".
The weak-gravity bound and the need for spin in asymptotically safe matter-gravity models
Creators: name: de Brito, Gustavo P.
name: Eichhorn, Astrid
name: Santos, Rafael Robson Lino dos
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We discover a weak-gravity bound in scalar-gravity systems in the asymptotic-safety paradigm. The weak-gravity bound arises in these systems under the approximations we make, when gravitational fluctuations exceed a critical strength. Beyond this critical strength, gravitational fluctuations can generate complex fixed-point values in higher-order scalar interactions. Asymptotic safety can thus only be realized at sufficiently weak gravitational interactions. We find that within truncations of the matter-gravity dynamics, the fixed point lies beyond the critical strength, unless spinning matter, i.e., fermions and vectors, is also included in the model.
description: 18 pages + appendix, 18 figures. Version identical with published one, except for correction of typo in Eq. 3.6
Declaration of Intention of Frank Hiess
Creators: name: United States. Bureau Of Naturalization
Publisher: name: No Publisher Supplied
Year: 1913

description: Declaration of Intention to become a citizen of the United States, as filled out and signed by:  Frank Hiess Applicant age: 35Occupation: TailorCountry of Origin: AustriaDate of Birth: 18 September 1877Sailed to the US aboard the vessel:   RotterdamCity of residence at time of declaration: Mays Landing, NJDeclaration submitted and sworn on date: 16 June 1913
The Space of the City and Literary Imagination: the Legacy of Nikolai Antsiferov
Creators: name: Stepanov, Boris
Publisher: name: Università degli Studi di Milano
Year: 2014
Subjects: Urban history; heritage; image of the city; excursion; “biography of the city”; genius loci; interdisciplinarity; Petersburg text; myth; local studies

description: This paper discusses the legacy of Nikolai Antsiferov (1889–1958), a Russian historian who suggested a unique approach to urban studies in which literature played the key role. In the first section of this paper, the genesis of Antsiferov’s conceptions of the study of urban history and the image of the city are outlined. The second section provides an analysis of his ideas on the literary image of St. Petersburg and the theory of literary-themed guided tours, which were articulated in his works of the 1920s. The finalsection of the article sheds light on the reception and legacy of Antsiferov’s intellectual ideas in the modern humanities and assesses its significance in the modern context of interdisciplinarity.
description: ENTHYMEMA, No 11 (2014)
Quantal diffusion description of isotope production by multinucleon transfer mechanism in ${}^{48}\text{Ca}+{}^{238}\text{U}$ collisions
Creators: name: Ayik, S.
name: Arik, M.
name: Karanfil, E. C.
name: Yilmaz, O.
name: Yilmaz, B.
name: Umar, A. S.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Nuclear Theory (nucl-th)
subject: FOS: Physical sciences

description: As an extension of previous work, we calculate the production cross-section of heavy neutron-rich isotopes by employing the quantal diffusion description to ${}^{48} \text{Ca} + {}^{238} \text{U}$ collisions. The quantal diffusion is deduced from stochastic mean-field approach, and transport properties are determined in terms of time-dependent single-particle wave functions of the time-dependent Hartree-Fock (TDHF) theory. As a result, the approach allows for prediction of production cross-sections without any adjustable parameters. The secondary cross-sections by particle emission are calculated with the help of the statistical GEMINI++ code.
description: 9 pages, six figures
Marco Caracciolo, The Experientiality of Narrative. An Enactivist Approach
Creators: name: Popova, Yanna
Publisher: name: Università degli Studi di Milano
Year: 2014
Subjects: Enactivism; experientiality; interpretation; narrative

description: Review of Caracciolo, Marco. The Experientiality of Narrative. An Enactivist Approach. Berlin: De Gruyter, 2014. Print.
description: ENTHYMEMA, No 11 (2014)
Εννοιολογική χαρτογράφηση γυναικοκτονιών σε Ελλάδα & Ιταλία: Η επικοινωνιακή λειτουργία του ντοκιμαντέρ
Creators: name: Βαρέλη, Χαρά Ιωάννη
Publisher: name: Aristotle University of Thessaloniki
Year: 2025
Subjects: Γυναικοκτονία
Έμφυλη βία
Ντοκιμαντέρ
Femicide
Gender based violence
Documentary

description: Από την προσέγγιση της θεματικής των γυναικοκτονιών, ανακύπτουν η τακτική διαχείρισης των περιπτώσεων, η παραληρηματική προσπάθεια οργάνωσης μιας πολιτείας που επί σειρά ετών νοσεί ανεπιστρεπτί αλλά και η προβληματική γύρω από την κατοχύρωση-αναγνώριση του όρου ως ένα γλωσσολογικό φορτίο ευθύνης ή ως υπεκφυγή στο να ορίσουμε το πραγματικό. Δείχνει η γυναικεία υποκειμενικότητα, με το να κυριαρχεί ή να κυριαρχείται, να εξουσιάζει ή να εξουσιάζεται, να είναι εκείνο ακριβώς που σχηματοποιεί τη διάσταση μέσα στην οποία βιώνεται η καθημερινή ζωή. Στην πλαισίωση της συγκεκριμένης θεματικής από τα ΜΜΕ, τα ψηφιακά μέσα αλλά κυρίως από τη λειτουργία των ντοκιμαντέρ, μία κοινωνία πολιτών αναζητά το σημείο επαφής πολίτη-κράτους σε μία συλλογική δράση προς μία καλύτερη κατεύθυνση ζωής, αποζητώντας την αποκατάσταση της κάθε αλήθειας σε όρους κοινωνικής-φυλετικής ισότητας, κοινωνικής-κρατικής δικαιοσύνης. Η γυναικοκτονία είναι ένα έγκλημα, με βάση το φύλο, που πρέπει να αναγνωριστεί. Μπορεί η ήπια ισχύς ενός ντοκιμαντέρ να είναι το εργαλείο προέκτασης της νέας δημοσιογραφίας; Δύναται να λειτουργήσει δια του ντοκιμαντέρ μία ερευνητική δημοσιογραφική κάλυψη υπό την εντολή θεμελίωσης μίας σε μόνιμη βάση καλής πρακτικής για τη δημοσιογραφία;
description: The approach to the issue of femicide brings to light the tactical management of cases, the delusional effort to organize a state that has been irreversibly ailing for years, as well as the problematic aspects surrounding the recognition of the term as a linguistic burden of responsibility or as an evasion of defining reality. It seems that female subjectivity, whether it dominates or is dominated, whether it controls or is controlled, is precisely what shapes the dimension within which everyday life is experienced. Within the framing of this particular issue by the media, digital platforms, and especially through documentaries, a civil society seeks the point of contact between citizens and the state in a collective effort towards a better direction in life, aiming for the restoration of every truth in terms of social-gender equality and social-state justice. Femicide, is a gender based crime & should be recognized. Can the soft power of a documentary be the tool for extending a new journalism? Can investigative journalistic coverage function through documentaries under the mandate of establishing a permanently good practice for journalism?
Stefano Ghidinelli, L’interazione poetica.  Modi di socializzazione e forme della testualità della  poesia italiana contemporanea
Creators: name: Corsi, Marco
Publisher: name: Università degli Studi di Milano
Year: 2014
Subjects: Poesia; testualità; canone

description: Recensiamo Ghidinelli, Stefano. L’interazione poetica. Modi e forme della testualità della poesia italiana contemporanea. Napoli: Guida Editori, 2013. Stampa.
description: ENTHYMEMA, No 11 (2014)
A generalized voter model on complex networks
Creators: name: Schneider-Mizell, Casey M.
name: Sander, Leonard M.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Physics and Society (physics.soc-ph)
subject: FOS: Physical sciences

description: We study a generalization of the voter model on complex networks, focusing on the scaling of mean exit time. Previous work has defined the voter model in terms of an initially chosen node and a randomly chosen neighbor, which makes it difficult to disentangle the effects of the stochastic process itself relative to the network structure. We introduce a process with two steps, one that selects a pair of interacting nodes and one that determines the direction of interaction as a function of the degrees of the two nodes and a parameter $α$ which sets the likelihood of the higher degree node giving its state. Traditional voter model behavior can be recovered within the model. We find that on a complete bipartite network, the traditional voter model is the fastest process. On a random network with power law degree distribution, we observe two regimes. For modest values of $α$, exit time is dominated by diffusive drift of the system state, but as the high nodes become more influential, the exit time becomes becomes dominated by frustration effects. For certain selection processes, a short intermediate regime occurs where exit occurs after exponential mixing.
description: 11 pages, 5 figures
2021- Comparative Study of Vegetable Oils Oxidative Stability using DSC and Rancimat Methods.pdf
Creators: name: Almoselhy, Rania I.M.
Publisher: name: figshare
Year: 2021
Subjects: subject: 60101 Analytical Biochemistry
subject: FOS: Biological sciences

description: A comparative study was carried out to evaluate and compare the oxidative stability of vegetable oils (olive, corn and sunflower) in Egypt, through evaluation of accelerated oxidation at four different isothermal temperatures (110, 120, 130, 140 °C) using two different instruments: a differential scanning calorimeter (DSC) and a Rancimat instrument, taking into account the physicochemical quality characteristics and relationships between oxidative stability and fatty acid composition of oils. The Rancimat instrument was set at the four different isothermal temperatures with an air flow 20 L/h and measures the induction period (IP) of the selected oils. The differential scanning calorimetry (DSC) technique involved accelerated oxidation of oil samples in an air flow of 60 ml/min in DSC cell set at four different isothermal temperatures. A rapid increase in evolved heat was observed with the appearance of a sharp exothermic curve during initiation of the oxidation reaction. From the resulting exothermic curve, the onset of oxidation time (To) was determined graphically by the DSC instrument. There was an excellent correlation (p<0.0001) found between DSC (T0) values and Rancimat (IP) measurements where the Pearson correlation coefficient (>0.98) between the two methods with coefficient of determination (R2 >0.89) for DSC independent of the vegetable oil source, imply that DSC can be recommended as an alternative appropriate objective method for assessing the oxidative stability of vegetable oils because of its simplicity, absence of toxic chemicals, small amount of sample and time-saving nature and could be easily used for routine analysis in oils and fats industry.
Upper limit on the transition temperature for non-ideal Bose gases
Creators: name: Dai, Wu-Sheng
name: Xie, Mi
Publisher: name: arXiv
Year: 2007
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In this paper we show that for a non-ideal Bose gas there exists an upper limit on the transition temperature above which Bose-Einstein condensation cannot occur regardless of the pressure applied. Such upper limits for some realistic Bose gases are estimated. This result implies that there may also exist an upper limit on the transition temperature of superconductors.
description: 7 pages, 1 figure
Reentrant phase transition in a predator-prey model
Creators: name: Han, Sung-Guk
name: Park, Su-Chan
name: Kim, Beom Jun
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Populations and Evolution (q-bio.PE)
subject: FOS: Physical sciences
subject: FOS: Biological sciences

description: We numerically investigate the six-species predator-prey game in complex networks as well as in $d$-dimensional hypercubic lattices with $d=1,2,..., 6$. The interaction topology of the six species contains two loops, each of which is composed of cyclically predating three species. As the mutation rate $P$ is lowered below the well-defined phase transition point, the $Z_2$ symmetry related with the interchange of the two loops is spontaneously broken, and it has been known that the system develops the defensive alliance in which three cyclically predating species defend each other against the invasion of other species. In the small-world network structure characterized by the rewiring probability $α$, the phase diagram shows the reentrant behavior as $α$ is varied, indicating a twofold role of the shortcuts. In $d$-dimensional regular hypercubic lattices, the system also exhibits the reentrant phase transition as $d$ is increased. We identify universality class of the phase transition and discuss the proper mean-field limit of the system.
description: 8 pages, 7 figures, Phys. Rev. E (in press)
Infinite randomness with continuously varying critical exponents in the random XYZ spin chain
Creators: name: Roberts, Brenden
name: Motrunich, Olexei I.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: We study the antiferromagnetic XYZ spin chain with quenched bond randomness, focusing on a critical line between localized Ising magnetic phases. A previous calculation using the spectrum-bifurcation renormalization group, and assuming marginal many-body localization, proposed that critical indices vary continuously. In this work we solve the low-energy physics using an unbiased numerically exact tensor network method named the "rigorous renormalization group." We find a line of fixed points consistent with infinite-randomness phenomenology, with indeed continuously varying critical exponents for average spin correlations. A self-consistent Hartree-Fock-type treatment of the $z$ couplings as interactions added to the free-fermion random XY model captures much of the important physics including the varying exponents; we provide an understanding of this as a result of local correlation induced between the mean-field couplings. We solve the problem of the locally-correlated XY spin chain with arbitrary degree of correlation and provide analytical strong-disorder renormalization group proofs of continuously varying exponents based on an associated classical random walk problem. This is also an example of a line of fixed points with continuously varying exponents in the equivalent disordered free-fermion chain. We argue that this line of fixed points also controls an extended region of the critical interacting XYZ spin chain.
description: 30 pages, 19 figures. Replaced with published version
Evolution and short-term results of the Goldwater-Nichols Act of 1986
Creators: name: Weatherford, Bret Wayne, 1960-
Publisher: name: The University of Texas at Austin
Year: 1988
Subjects: subject: United States. Joint Chiefs of Staff
subject: United States--Armed Forces--Management
subject: United States. Department of Defense
subject: United States. Goldwater-Nichols Department of Defense Reorganization Act of 1986

description: There are many important areas of discussion within the military reform movement, such as selection and procurement of weapons and equipment, strategy, officer education and unit organization. In this thesis I concentrate on efforts to reform the higher joint military entities within the American defense establishment--primarily the Joint Chiefs of Staff (hereafter referred to as the JCS). Also covered will be the joint staff which serves the JCS, and the commanders and staffs of the unified/specified commands, which have always had some connection to the JCS. The unified commands have generally mirrored the organization of the JCS. Other institutions of government (such as Congress) and parts of the Department of Defense (such as the Secretary of Defense and the service departments) will be touched upon at times, but only in their relationship to these senior military bodies. [...] In this study I will cover the evolution of the JCS system; its origins, the 1947 Defense Act, and the amendments to that Act under the Truman and Eisenhower administrations. Also to be covered are the criticisms of the pre-1986 JCS, including some brief case studies of military actions cited by reformers to illustrate shortcomings of that system. The efforts to reorganize the system, and why those failed in the 1960s and 1970s but succeeded in the 1980s, will be covered. The changes of the 1986 Reorganization Act will be examined. Finally, there will be some analysis of the early effects of the Goldwater-Nichols Act on problems attributed to the old system
Is D_s(2700) a charmed tetraquark state ?
Creators: name: Wang, Zhi-Gang
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this article, we take the point of view that the $D_s(2700)$ be a tetraquark state, which consists of a scalar diquark and a vector antidiquark, and calculate its mass with the QCD sum rules. The numerical result indicates that the mass of the vector charmed tetraquark state is about $M_V=(3.75\pm0.18)\rm{GeV}$ or $M_V=(3.71\pm0.15)\rm{GeV}$ from different sum rules, which is about $1\rm{GeV}$ larger than the experimental data. Such tetraquark component should be very small in the $D_s(2700)$.
description: 12 pages, 3 figures, extended version
On the exact solution of the accelerating string in $AdS_5$ space
Creators: name: Xiao, Bo-Wen
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: In this letter, the exact accelerating string solution of a heavy quark-antiquark pair is found in $AdS_5$ space. On the accelerating string, there is a particular scale which separates the radiation and the heavy quark. This scale is explicitly shown to be an event horizon in the proper frame of the heavy quark. Furthermore, we find a new correspondence, which relates the horizon in $AdS_5$ space on the gravity theory side to the Unruh temperature in Minkowski space on the field theory side of the AdS/CFT correspondence. $p_{\perp}$-broadening and $p_{L}$-broadening of the heavy quark due to radiation are computed using the AdS/CFT correspondence.
description: 12 pages, 1 figure; More discussion is added
Erosion and accretion by cratering impacts on rocky and icy bodies
Creators: name: Hyodo, Ryuki
name: Genda, Hidenori
Publisher: name: arXiv
Year: 2021
Subjects: subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: During planet formation, numerous small impacting bodies result in cratering impacts on large target bodies. A fraction of the target surface is eroded, while a fraction of the impactor material accretes onto the surface. These fractions depend upon the impact velocities, the impact angles, and the escape velocities of the target. This study uses smoothed particle hydrodynamics simulations to model cratering impacts onto a planar icy target for which gravity is the dominant force and material strength is neglected. By evaluating numerical results, scaling laws are derived for the escape mass of the target material and the accretion mass of the impactor material onto the target surface. Together with recently derived results for rocky bodies in a companion study, a conclusion is formulated that typical cratering impacts on terrestrial planets, except for those on Mercury, led to a net accretion, while those on the moons of giant planets, e.g., Rhea and Europa, led to a net erosion. Our newly derived scaling laws would be useful for predicting the erosion of the target body and the accretion of the impactor for a variety of cratering impacts that would occur on large rocky and icy planetary bodies during planet formation and collisional evolution from ancient times to today.
description: 12 pages, 8 figures. Accepted for publication in ApJ. arXiv admin note: substantial text overlap with arXiv:2006.00732
Archer: A Community Distributed Computing Infrastructure for Computer Architecture Research and Education
Creators: name: Figueiredo, Renato
name: Boykin, P. Oscar
name: Fortes, Jose A. B.
name: Li, Tao
name: Peir, Jie-Kwon
name: Wolinsky, David
name: John, Lizy
name: Kaeli, David
name: Lilja, David
name: McKee, Sally
name: Memik, Gokhan
name: Roy, Alain
name: Tyson, Gary
Publisher: name: arXiv
Year: 2008
Subjects: subject: Hardware Architecture (cs.AR)
subject: FOS: Computer and information sciences
subject: C.0; I.6.3; C.2.4

description: This paper introduces Archer, a community-based computing resource for computer architecture research and education. The Archer infrastructure integrates virtualization and batch scheduling middleware to deliver high-throughput computing resources aggregated from resources distributed across wide-area networks and owned by different participating entities in a seamless manner. The paper discusses the motivations leading to the design of Archer, describes its core middleware components, and presents an analysis of the functionality and performance of a prototype wide-area deployment running a representative computer architecture simulation workload.
description: 11 pages, 2 figures. Describes the Archer project, http://archer-project.org
$t\bar{t}t\bar{t}$ signatures through the lens of color-octet scalars
Creators: name: Carpenter, Linda M.
name: Murphy, Taylor
name: Smylie, Matthew J.
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We reinterpret two recent LHC searches for events containing four top quarks ($t\bar{t}t\bar{t}$) in the context of supersymmetric models with Dirac gauginos and color-octet scalars (sgluons). We explore whether sgluon contributions to the four-top production cross section $σ(pp \to t\bar{t}t\bar{t})$ can accommodate an excess of four-top events recently reported by the ATLAS collaboration. We also study constraints on these models from an ATLAS search for new phenomena with jets and missing transverse energy ($E_{\text{T}}^{\text{miss}}$) sensitive to signals with four top quarks. We find that these two analyses provide complementary constraints, with the jets + $E_{\text{T}}^{\text{miss}}$ search exceeding the four-top cross section measurement in sensitivity for sgluons heavier than about 800 GeV. We ultimately find that either a scalar or a pseudoscalar sgluon can currently fit the ATLAS excess in a range of reasonable benchmark scenarios, though a pseudoscalar in minimal Dirac gaugino models is ruled out. We finally offer sensitivity projections for these analyses at the HL-LHC, mapping the $5σ$ discovery potential in sgluon parameter space and computing exclusion limits at 95% CL in scenarios where no excess is found.
description: 34 pages, 11 figures. Updated to resemble JHEP Version of Record
Hidden Order in Crackling Noise during Peeling of an Adhesive Tape
Creators: name: Kumar, Jagadish
name: Ciccotti, M.
name: Ananthakrishna, G.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Astrophysics (astro-ph)
subject: Materials Science (cond-mat.mtrl-sci)
subject: Chaotic Dynamics (nlin.CD)
subject: FOS: Physical sciences

description: We address the long standing problem of recovering dynamical information from noisy acoustic emission signals arising from peeling of an adhesive tape subject to constant traction velocity. Using phase space reconstruction procedure we demonstrate the deterministic chaotic dynamics by establishing the existence of correlation dimension as also a positive Lyapunov exponent in a mid range of traction velocities. The results are explained on the basis of the model that also emphasizes the deterministic origin of acoustic emission by clarifying its connection to sticks-slip dynamics.
description: 5 pages, 10 figures
Optical equations for null strings
Creators: name: Fursaev, Dmitri
Publisher: name: arXiv
Year: 2021
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: An optical equation for null strings is derived. The equation is similar to Sachs' optical equations for null geodesic congruences. The string optical equation is given in terms of a single complex scalar function $Z$, which is a combination of spin coefficients at the string trajectory. Real and imaginary parts of $Z$ determine expansion and rotation of strings. Trajectories of strings can be represented by diagrams in a complex $Z$-plane. Such diagrams allow one to draw some universal features of null strings in different backgrounds. For example, in asymptotically flat space-times $Z$ vanishes as future null infinity is approached, that is, gradually shapes of strings are "freezing out". Outgoing gravitational radiation and flows of matter leave ripples on the strings. These effects are encoded in subleading terms of $Z$. String diagrams are demonstrated for rotating and expanding strings in a flat space-time and in cosmological models.
description: 21 pages, 3 figures
The Dynamical State fo the Starless Dense Core FeSt 1-457: A Pulsating Globule?
Creators: name: Aguti, E. D.
name: Lada, C. J.
name: Bergin, E. A.
name: Alves, J. F.
name: Birkinshaw, M.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: High resolution molecular line observations of CS, HCO+, C18O and N2H+ were obtained toward the starless globule FeSt 1-457 in order to investigate its kinematics and chemistry. The HCO+ and CS spectra show clear self-reversed and asymmetric profiles across the face of the globule. The sense of the observed asymmetry is indicative of the global presence of expansion motions in the outer layers of the globule. These motions appear to be subsonic and significantly below the escape velocity of the globule. Comparison of our observations with near-infrared extinction data indicate that the globule is gravitationally bound. Taken together these considerations lead us to suggest that the observed expansion has its origin in an oscillatory motion of the outer layers of the globule which itself is likely in a quasi-stable state near hydrostatic equilibrium. Analysis of the observed linewidths of CO and N2H+ confirm that thermal pressure is the dominant component of the cloud's internal support. A simple calculation suggests that the dominant mode of pulsation would be an l = 2 mode with a period of 0.3 Myr. Deformation of the globule due to the large amplitude l = 2 oscillation may be responsible for the double-peaked structure of the core detected in high resolution extinction maps. Detailed comparison of the molecular-line observations and extinction data provides evidence for significant depletion of C18O and perhaps HCO+ while N2H+ may be undepleted to a cloud depth of about 40 magnitudes of visual extinction.
description: to appear in ApJ vol 665 20 August 2007;
The Volterra type equations related to the non-Debye relaxation
Creators: name: Górska, K.
name: Horzela, A.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We investigate a possibility to describe the non-Debye relaxation processes using the Volterra-type equations with kernels given by the Prabhakar functions with the upper parameter $ν$ being negative. Proposed integro-differential equations mimic the fading memory effects and are explicitly solved using the umbral calculus and the Laplace transform methods. Both approaches lead to the same results valid for admissible domain of the parameters $α$, $μ$ and $ν$ characterizing the Prabhakar function. For the special case $α\in (0,1]$, $μ=0$ and $ν=-1$ we recover the Cole-Cole model, in general having a residual polarization. We also show that our scheme gives results equivalent to those obtained using the stochastic approach to relaxation phenomena merged with integral equations involving kernels given by the Prabhakar functions with the positive upper parameter.
Nucleosome Chiral Transition under Positive Torsional Stress in Single Chromatin Fibers
Creators: name: Bancaud, Aurelien
name: Wagner, Gaudeline
name: Silva, Natalia Conde e
name: Lavelle, Christophe
name: Wong, Hua
name: Mozziconacci, Julien
name: Barbi, Maria
name: Sivolob, Andrei
name: Cam, Eric Le
name: Mouawad, Liliane
name: Viovy, Jean-Louis
name: Victor, Jean-Marc
name: Prunell, Ariel
Publisher: name: arXiv
Year: 2007
Subjects: subject: Biomolecules (q-bio.BM)
subject: FOS: Biological sciences

description: Using magnetic tweezers to investigate the mechanical response of single chromatin fibers, we show that fibers submitted to large positive torsion transiently trap positive turns, at a rate of one turn per nucleosome. A comparison with the response of fibers of tetrasomes (the (H3-H4)2 tetramer bound with ~50 bp of DNA) obtained by depletion of H2A-H2B dimers, suggests that the trapping reflects a nucleosome chiral transition to a metastable form built on the previously documented righthanded tetrasome. In view of its low energy, <8 kT, we propose this transition is physiologically relevant and serves to break the docking of the dimers on the tetramer which in the absence of other factors exerts a strong block against elongation of transcription by the main RNA polymerase.
description: 33 pages (double spacing), 7 figures
Three opéras comiques of the 1830s : Fra Diavolo, Zampa and Le pré aux clercs and the placement of musical soli within the drama
Creators: name: Regaudie-McIsaac, Francine Yvonne
Publisher: name: University of British Columbia
Year: 2010

description: In the 1830s the opera-comique genre evolves from the simple "comedies melee d'ariettes" to a true operatic form with musico-dramatic significance. One primary area of development is found in the placement and dramatic function of solo forms which begin to play a markedly different role than they had in operas comiques of earlier periods. Despite the evidence suggesting significant musico-dramatic development, few scholars have attempted to identify the practices governing the placement and function of musical soli in the operas comiques of the 1830s. For this reason we have undertaken a detailed study of these elements in three libretti: Fra Diavolo (1830), Zampa (1831) and Le Pre aux Clercs (1832). In a preliminary examination, these libretti were found to exhibit traits representative of many works of the period. Our research has led us to conclude that solo forms are employed in one or more of the following four dramatic situations: (1) to convey background information to the plot or to characters, or to reveal pre-curtain events; (2) to paint a character's true personality; (3) to expose a character's emotional state of mind or train of thought at a given moment; and (4) to distribute the number of soli through the opera in a manner that reflects a character's importance in the drama. Although such uses of solo forms are not unique to the 1830s, the extent to which they were employed represents a significant departure from earlier practice. This thesis is divided into five chapters. The first chapter--by way of introduction--contrasts the roles of musical numbers in 1830s operas comiques with those of their predecessors. It also discusses the literary and musical conventions of the works of this period. The second chapter first presents a synopsis of Scribe's and Auber's opera comique Frat Diavolo, and a view of the well made play elements as displayed in the libretto, before focusing on a discussion of the placement of musical soli in the drama. Similarly, chapters three and four discuss Melesvilie's and Herold's Zampa, ou la Fiancee de marbre and Planard's and Herold's Le Pre aux Clercs respectively. The final chapter outlines the practices observed in the placement and dramatic function of soli in the three selected operas and relates the significance of these practices to the genre's development.
The HD 163296 Circumstellar Disk in Scattered Light: Evidence of Time-Variable Self-Shadowing
Creators: name: Wisniewski, John P.
name: Clampin, Mark
name: Grady, Carol A.
name: Ardila, David R.
name: Ford, Holland C.
name: Golimowski, David A.
name: Illingworth, Garth D.
name: Krist, John E.
name: ;
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We present the first multi-color view of the scattered light disk of the Herbig Ae star HD 163296, based on coronagraphic observations from the Hubble Space Telescope Advanced Camera for Surveys (ACS). Radial profile fits of the surface brightness along the disk's semi-major axis indicates that the disk is not continuously flared, and extends to 540 AU. The disk's color (V-I)=1.1 at a radial distance of 3.5 arcseconds is redder than the observed stellar color (V-I)=0.15. This red disk color might be indicative of either an evolution in the grain size distribution (i.e. grain growth) and/or composition, both of which would be consistent with the observed non-flared geometry of the outer disk. We also identify a single ansa morphological structure in our F435W ACS data, which is absent from earlier epoch F606W and F814W ACS data, but corresponds to one of the two ansa observed in archival HST STIS coronagraphic data. Following transformation to similar band-passes, we find that the scattered light disk of HD 163296 is 1 mag arcsec$^{-2}$ fainter at 3.5 arcseconds in the STIS data than in the ACS data. Moreover, variations are seen in (i) the visibility of the ansa(e) structures, in (ii) the relative surface brightness of the ansa(e) structures, and in (iii) the (known) intrinsic polarization of the system. These results indicate that the scattered light from the HD 163296 disk is variable. We speculate that the inner disk wall, which Sitko et al. suggests has a variable scale height as diagnosed by near-IR SED variability, induces variable self-shadowing of the outer disk. We further speculate that the observed surface brightness variability of the ansa(e) structures may indicate that the inner disk wall is azimuthally asymmetric.
description: 21 pages, accepted in ApJ, emulateapj5 format
On-site sequencing speeds up and re-directs field-based microbiology.
Creators: name: Apprill, Amy
Publisher: name: UNESCO/IOC
Year: 2019
Subjects: subject: Parameter Discipline::Biological oceanography::Other biological measurements

description: As a field-going molecular microbial ecologist, I often experience an extreme high feeling or bout of excitement during immersion in my study environment. However, when I return to my laboratory, generally in the cold and dark winter months, I ‘crash’ or reach a low point, due to my realization of how many samples we obtained in the field and the extent of processing, sequencing and analysis time that we still need to devote to the samples before we can draw any conclusions and share our findings. In an effort to lessen my now regular post-field crashes, I have started following the development of mobile sequencing technology. Oxford Nanopore Technologies has recently made large strides in this area, producing the MinION a hand-held flow-cell costing $1,000 that can connect to a laptop computer. The company is developing the even more mobile SmidgION, a lower power device that will run on a smartphone. Depending on the type of MinION sequencing conducted (amplicon, metagenomic, transcriptomic, etc.), preparation after extraction of nucleic acids can take as little as 10-minutes to a few hours, and sequencing reads are immediately available for viewing during the sequencing run. While the platform has been primarily used for DNA molecules, the MinION can directly sequence RNA (without conversion to cDNA), opening up new avenues for exploring microbial transcripts as well as RNA viruses while on-site. Within environmental microbiology, this technology has recently been applied at field sites, including soils and remote glacier environments (Cummings et al., 2017; Edwards et al., 2018) and has also been used to track wastewater contamination from urban storm water (Hu et al., 2018). The ability to produce sequencing data while in the field could transform the timeline of many environmental microbiology-based studies...
Bound state approach to the QCD coupling at low energy scales
Creators: name: Baldicchi, M.
name: Nesterenko, A. V.
name: Prosperi, G. M.
name: Shirkov, D. V.
name: Simolo, C.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We exploit theoretical results on the meson spectrum within the framework of a Bethe-Salpeter (BS) formalism adjusted for QCD, in order to extract an ``experimental'' coupling α_s^{exp}(Q^2) below 1 GeV by comparison with the data. Our results for α_s^{exp}(Q^2) exhibit a good agreement with the infrared safe Analytic Perturbation Theory (APT) coupling from 1 GeV down to 200 MeV. As a main result, we claim that the combined BS-APT theoretical scheme provides us with a rather satisfactory correlated understanding of very high and low energy phenomena.
description: Revised version, to appear on Physical Review Letters. 7 pages, 2 figures, Revtex
Matrix Factorizations, D-Branes and their Deformations
Creators: name: Jockers, H.
name: Lerche, W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We review in elementary, non-technical terms the description of topological B-type of D-branes in terms of boundary Landau-Ginzburg theory, as well as some applications.
description: 20p, 5 figs, Proceedings of Cargese school on string theory, 2006