cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Minimum Orbital Intersection Distance: Asymptotic Approach
Creators: name: Hedo, José Manuel
name: Fantino, Elena
name: Ruíz, Manuel
name: Pelaez, Jesús
Publisher: name: arXiv
Year: 2019
Subjects: subject: Instrumentation and Methods for Astrophysics (astro-ph.IM)
subject: FOS: Physical sciences

description: The minimum orbital intersection distance is used as a measure to assess potential close approaches and collision risks between astronomical objects. Methods to calculate this quantity have been proposed in several previous publications. The most frequent case is that in which both objects have elliptical osculating orbits. When at least one of the two orbits has low eccentricity, the latter can be used as a small parameter in an asymptotic power series expansion. The resulting approximation can be exploited to speed up the computation with negligible cost in terms of accuracy. This contribution introduces two asymptotic procedures into the SDG-MOID method presented in a previous article, it discusses the results of performance tests and their comparisons with previous findings. The best approximate procedure yields a reduction of 40% in computing speed without degrading the accuracy of the determinations. This remarkable result suggests that large benefits can be obtained in applications involving massive distance computations, such as in the analysis of large databases, in Monte Carlo simulations for impact risk assessment or in the long-time monitoring of the minimum orbital intersection distance between two objects.
description: 19 pages, 1 figure
Students' challenges in service learning : a non-typical "good news" story
Creators: name: Sun, Simin
Publisher: name: The University of British Columbia
Year: 2016

description: Community Service-Learning (CSL) provides students with an opportunity to serve communities as well as to realize their specific academic learning objectives. While there are proven and consensual benefits of service learning for students, some outcomes, challenges and concerns that students may encounter during the learning process have seldom been discussed. Especially for international students who participate in service-learning programs in Canada, their voice is missing in current literature. The goal of this paper is to explore what are the challenges that students may experience within the CSL programs, and how do these discomfort moments serve as learning opportunities. The paper presents a concise introduction to CSL, an overview of literature about challenges of service learning associated with students, and an autobiography of the author’s CSL learning experience. The author uses Boler’s theory of “ pedagogy of discomfort” to analyze the journals and to conduct critical reflection. Although the conclusions are specific to the case reported here, the learning process may apply to other international students enrolled in CSL courses in Canada. Thus this paper will potentially contribute to filling the gap in existing literature.
Gallup Poll # 639
Creators: name: Gallup
Publisher: name: Roper Center for Public Opinion Research
Year: 2021

description: Eisenhower job performance (1); Eisenhower's greatest accomplishment (1); what should Eisenhower have done that he didn't do (1); how will Eisenhower go down in history (1); what should new President/Congress do something about (1); possible/impossible to reach peaceful settlement with Russia (1); favorite things (9); danger of war with Russia (2); electoral college (2); if question of who gets new presidency is turned over to House, would rather have them declare Nixon/Kennedy the winner (1); U.S./Russia will be first to send a man into outerspace (1); U.S./Russia farther ahead in field of long range missiles and rockets (1); most interesting thing that happened in 1960 (1); go out at various times of day/evening (3); 1960 Congressional election (2); 1960 Presidential election (1).
How to Reconstruct a Trend when Survey Questions Have Changed Over Time.
Creators: name: De Jonge, Tineke
name: Kamesaka, Akiko
name: Veenhoven, Ruut
Publisher: name: Survey Research Methods
Year: 2021

description: Many trend studies draw on survey data and compare responses to questions on the same topic that has been asked over time. A problem with such studies is that the questions often do not remain identical, due to changes in phrasing and response formats. We present ways to deal with this problem using trend data on life satisfaction in Japan as an illustrative case. Life satisfaction has been measured in the Life in Nation survey in Japan since 1958 and the question used has been changed several times. We looked at three methods published by scholars who tried to reconstruct a main trend in life satisfaction from these broken time-series, coming to different conclusions. In this paper we discuss their methods and present two new techniques for dealing with changes in survey questions on the same topic.
description: Survey Research Methods, Vol 15 No 1 (2021)
Magnetoresistance of atomic-sized contacts: an ab-initio study
Creators: name: Bagrets, Alexei
name: Papanikolaou, Nikos
name: Mertig, Ingrid
Publisher: name: arXiv
Year: 2003
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: The magnetoresistance (MR) effect in metallic atomic-sized contacts is studied theoretically by means of first-principle electronic structure calculations. We consider three-atom chains formed from Co, Cu, Si, and Al atoms suspended between semi-infinite Co leads. We employ the screened Korringa-Kohn-Rostoker Green's function method for the electronic structure calculation and evaluate the conductance in the ballistic limit using the Landauer approach. The conductance through the constrictions reflects the spin-splitting of the Co bands and causes high MR ratios, up to 50%. The influence of the structural changes on the conductance is studied by considering different geometrical arrangements of atoms forming the chains. Our results show that the conductance through s-like states is robust against geometrical changes, whereas the transmission is strongly influenced by the atomic arrangement if p or d states contribute to the current.
description: Revised version, presentation of results is improved, figure 2 is splitted to two figures
Studying the Context Effect of Family Norms on Gender Role Attitudes: an Experimental Design
Creators: name: Maineri, Angelica
name: Lomazzi, Vera
name: Luijkx, Ruud
Publisher: name: Survey Research Methods
Year: 2021

description: The measurement of gender role attitudes has been found to be problematic in previous studies, especially in comparative perspective. The present study adopts a novel approach and investigates the position of the gender role attitudes scale in the questionnaire as a potential source of bias. In particular, the present study aims at assessing the context effect of the family norms question on the measurement of gender role attitudes by adopting the theoretical perspective of the construal model of attitudes, according to which the adjacent questions constitute the context for interpreting and answering a stimulus. The study employs data from the CROss-National Online Survey panel, which was fielded in 2017 and contained an experiment where the order of the questions under investigation varied. The reliability, validity and invariance of the measurement of gender role attitudes across experimental settings and countries (Estonia, Great Britain and Slovenia) are explored adopting several analytical techniques, such as regression models and multiple-group confirmatory factor analysis. Differences between experimental settings emerged, suggesting that the questionnaire context matters for the validity and stability of the gender role attitudes items; however, the lack of patterns hinders general conclusions on what is the order of questions yielding better measurement of the gender role attitudes scale. Clear differences among the countries indicate that the cultural context may interact with the question context. Finally, we stress that the measurement is overall poor, urging to find a better formulation of the items measuring gender role attitudes.
description: Survey Research Methods, Vol 15 No 1 (2021)
The Role of Time, Weather and Google Trends in Understanding and Predicting Web Survey Response
Creators: name: Fang, Qixiang
name: Burger, Joep
name: Meijers, Ralph
name: Van Berkel, Kees
Publisher: name: Survey Research Methods
Year: 2021

description: In the literature about web survey methodology, significant efforts have been made to understand the role of time-invariant factors (e.g. gender, education and marital status) in (non-)response mechanisms. Time-invariant factors alone, however, cannot account for most variations in (non-)responses, especially fluctuations of response rates over time. This observation inspires us to investigate the counterpart of time-invariant factors, namely time-varying factors and the potential role they play in web survey (non-)response. Specifically, we study the effects of time, weather and societal trends (derived from Google Trends data) on the daily (non-)response patterns of the 2016 and 2017 Dutch Health Surveys. Using discrete-time survival analysis, we find, among others, that weekends, holidays, pleasant weather, disease outbreaks and terrorism salience are associated with fewer responses. Furthermore, we show that using these variables alone achieves satisfactory prediction accuracy of both daily and cumulative response rates when the trained model is applied to future unseen data. This approach has the further benefit of requiring only non-personal contextual information and thus involving no privacy issues. We discuss the implications of the study for survey research and data collection.
description: Survey Research Methods, Vol 15 No 1 (2021)
title: The molecular basis of occupational allergy.
Creators: name: Cawley, Christopher John
Publisher: name: The Open University
Year: 1985

description: The problem of occupational allergy has only been highlighted in recent years. Diseases and disorders arising from acute exposure to large quantities of chemicals and concern over their potential toxic properties generally overshadow considerations of likely allergic reactions and the possibility of sensitisation developing. This thesis summarises the basic mechanisms of immunity and allergy and lists the substances which have given rise to sensitisation and allergic reactions in workers exposed to them. The literature covering allergy and sensitisation (including case histories of workers, animal studies and laboratory investigations) to particular organic chemicals encountered in occupational environments is reviewed. The mechanisms by which these chemicals stimulate allergic reactions in the body are discussed with particular reference to the chemical structure and molecular configuration of the chemicals. Basic physical data, structural formulae, the adverse reactions reported and related details are tabulated for each chemical. Occupational allergy to acid anhydrides is considered in more detail and typical case histories of sensitised workers given. The question of sensitisation generally is discussed. Recommendations for control measures to prevent or alleviate cases of occupational allergy, on improvements in the screening of workers and for the wider availability of information on the subject are made. Tests used in allergy investigations are summarised and a glossary of medical and related terms is given.
Paraleurolobus Sampson & Drews
Creators: name: Martin, Jon H.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aleyrodidae
Paraleurolobus

description: PARALEUROLOBUS Sampson & Drews
 Paraleurolobus Sampson & Drews, 1941: 168–169. Type species Paraleurolobus imbricatus, by original designation and monotypy.
 DIAGNOSIS AND COMMENTS. As interpreted here, Paraleurolobus comprises species with the following combination of characters: puparia very flat; margin with regular teeth, these subtly modified at thoracic and caudal tracheal openings; very broad submargin separated from dorsal disc by a complete furrow, concentric with curvature of margin; submedian pairs of cephalic, meso­ & metathoracic, eighth abdominal and caudal setae present, the caudal pair placed close to subdorsal furrow; first abdominal setae absent; vasiform orifice subcircular to cordate, operculum obscuring lingula; caudal furrow absent; cuticle black, sometimes requiring bleaching, or bicoloured.
 In Belize, Paraleurolobus is represented by P. chamaedoreae Russell (see below) and three undescribed species.
description: Published as part of Martin, Jon H., 2005, Whiteflies of Belize (Hemiptera: Aleyrodidae) Part 2 - a review of the subfamily Aleyrodinae Westwood, pp. 1-116 in Zootaxa 1098 (1) on page 44, DOI: 10.11646/zootaxa.1098.1.1, http://zenodo.org/record/5051548
title: THE METABOLISM AND TOXICITY OF PHENOTHIAZINE
Creators: name: Mitchell, Stephen Charles
Publisher: name: The Open University
Year: 1986

description: Phenothiazine, first prepared in 1883 during research into aniline dyestuffs , is the parent molecule of a multitude of drugs which have found varied and extensive use in clinical practice. The compound itself possesses insecticidal, antibacterial, antifungal and anthelmintic properties . Its major use has been as a vermifuge which enabled the provision of many tons of infection-free food and sheep intestine (catgut) which were desperately required during World War II . For this reason alone phenothiazine deserves recognition alongside penicillin and DDT for its remarkable effect on mankind. To be effective as an anthelmintic the compound has to be given in large doses and because of its high lipid solubility becomes widely distributed around the body. Here it undergoes enzymatically catalysed chemical alterations, mainly oxidations of the carbon and sulphur atoms and conjugation reactions with glucuronic and sulphuric acids. The therapeutic actions of phenothiazine and the production of its unwanted toxic effects (haemolytic, neuromuscular, photosensitization) presumably arise from common underlying mechanisms, the toxic effects perhaps being aggravated by an environmental or genetic predisposition. Three basic ways in which the phenothiazine molecule interacts with the cellular components of tissues to produce these observed effects have become apparent from evaluating the available literature. These are the non-specific macromolecular disruptions that can occur to lipid or protein molecules in membranes and other locations, the formation of metabolite redox systems to permit energy transfer to disrupt cellular components and enzyme systems and the formation of allergens with all their immunological sequelae. It is probable that these three mechanisms explain most, if not all, of the actions of phenothiazine.
“Ethiopia, Thou Land of Our Fathers!” From Ethiopianism to Pan-Africanism
Creators: name: Frühwirth, Dominik
Year: 2020

description: The Universal Ethiopian Anthem of Marcus Garvey’s Universal Negro Improvement Association, from its opening lines “Ethiopia, thou land of our fathers, thou land where the gods loved to be” to its conclusion that “Ethiopia shall stretch forth her hand” in the final verse, gives a glimpse at the influence Ethiopianism had on emerging Pan-Africanism in the early twentieth century. The following article will trace this influence in order to show how widespread and profound it was. It will also show how Ethiopianism was not only a mere forerunner of Pan-Africanism that ceased to exist once Pan-Africanism was in place, but that Ethiopianism constitutes a whole religious cosmology, in which pan-African unity plays a central role, that has survived the twentieth century and is now most visibly upheld and still developed within the Rastafarian movement.
On vector potential of the Coulomb gauge
Creators: name: Dmitriyev, Valery P.
Publisher: name: arXiv
Year: 2003
Subjects: subject: Physics Education (physics.ed-ph)
subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: The question of an instantaneous action (A M Stewart 2003 Eur. J. Phys. 24, 519) can be approached in a systematic way applying the Helmhotz vector decomposition theorem to a two-parameter Lorenz-like gauge. We thus show that only the scalar potential may act instantaneously.
description: REVTEX4, 7 pages
The Mali-Federation: A Pan-African Endeavour? Reflections on Pan-Africanism and Nationalism in Times of Decolonization
Creators: name: Wurzer, Katharina
Year: 2020

description: The idea of joint political forces of Senegal and Soudan into a federation to enforce anti-colonial demands in 1959 seems to be the incarnation of pan-African nationalism. Considering the predominance of nation-statist ideas in Franco-African relations post-1945, federating looks like the anti-thesis to nation-statist agitation. I will argue that the two levels of nationalism, the pan- African level and the nation-state level, are not necessarily opposed diametrically to each other in the Mali federation, but are linked inextricably. My analysis focuses on two dimensions: the visionary dimension of the Mali Federation and its concrete political realisation. Initially, the federalist vision of Senegal’s Léopold Sédar Senghor and Soudan’s Modibo Keita aimed for an AOF-wide federation within the colonial framework. However, in the late 1950s, the pan-African vision became an indispensable tool for achieving national independence. The realisation of the Federation, however, was constrained by the nation-statist level of nationalism, its collapse being a case in point.
Higher order Poincare-Pontryagin functions and iterated path integrals
Creators: name: Gavrilov, Lubomir
Publisher: name: arXiv
Year: 2004
Subjects: subject: Dynamical Systems (math.DS)
subject: FOS: Mathematics
subject: 34C07, 34C08

description: We prove that the higher order Poincare-Pontryagin functions associated to the perturbed polynomial foliation $df -ε(P dx + Q dy) =0$ satisfy a differential equation of Fuchs type.
description: This is a revised version containing the following changes: reference [18] is added, some notations are changed, the proof of Theorem 1 is corrected, Theorem B1 and B2 are replaced now by Theorem B, some signs are corrected in the Appendix. The paper will appear in "Annales de la Faculte des Sciences de Toulouse", 2005
Dynamically accelerated cover times
Creators: name: Maziya, Gcina
name: Cocconi, Luca
name: Pruessner, Gunnar
name: Moloney, Nicholas
Publisher: name: arXiv
Year: 2020
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: Among observables characterising the random exploration of a graph or lattice, the cover time, namely the time to visit every site, continues to attract widespread interest. Much insight about cover times is gained by mapping to the (spaceless) coupon-collector problem, which amounts to ignoring spatio-temporal correlations, and an early conjecture that the limiting cover time distribution of regular random walks on large lattices converges to the Gumbel distribution in $d \geq 3$ was recently proved rigorously. Furthermore, a number of mathematical and numerical studies point to the robustness of the Gumbel universality to modifications of the \textit{spatial} features of the random search processes (e.g.\ introducing persistence and/or intermittence, or changing the graph topology). Here we investigate the robustness of the Gumbel universality to dynamical modification of the \textit{temporal} features of the search, specifically by allowing the random walker to "accelerate" or "decelerate" upon visiting a previously unexplored site. We generalise the mapping mentioned above by relating the statistics of cover times to the roughness of $1/f^α$ Gaussian signals, leading to the conjecture that the Gumbel distribution is but one of a family of cover time distributions, ranging from Gaussian for highly accelerated cover, to exponential for highly decelerated cover. While our conjecture is confirmed by systematic Monte Carlo simulations in dimensions $d > 3$, our results for acceleration in $d=3$ challenge the current understanding of the role of correlations in the cover time problem.
description: 10 pages, 15 figures
title: The mechanism of nucleophilic substitution at silicon
Creators: name: Lau, Juliana C.Y.
Publisher: name: The Open University
Year: 1986

description: Using multinuclear n.m.r. spectroscopy (1H, 13C, 29Si and 170 ), the interactions of diastereotopic (PhCHMeSiMe2X; X=CL, Br, 0S02CF3) and chiral (PhMeHSiX; X=CL, 0S02CF3) silanes with a diverse range of nucleophile (Nu = amides, ureas, pyridines, phosphine oxide and amines) are examined in detail. The dominant species in the diastereotopic silylating solutions are four coordinate 1:1 ionic [PhCHMeSiMe2-Nu]+X- adducts. These complexes undergo exchange with nucleophiles and their parent silanes at a rate limited by the initial attack of nucleophile or counterion at the silicon atom of the adduct. The halide counterions of stable silane-nucleophile adducts can also induce isomerization of uncomplexed silanes. The kinetic and thermodynamic results are consistent with the operation of two different mechanisms for the racemizations of PhCHMeSiMe2X (X=CL, Br). Racemization involving Less stable silane-nucleophile complexes may proceed via rate determining attack by a second molecule of nucleophile at the adduct, formed in the initial, rapid, pre-equilibrium step. Two molecules of nucleophile are utilized resulting in an order of 2 or 1.5 in nucleophile, depending upon the degree of ion-pair dissociation. An alternative pathway is preferred with increasing stability of the silane-nucleophile salt. Adduct formation is followed by halide exchange leading to racemization of silane. One molecule of nucleophile is required in this case corresponding to a first or a half order in nucleophile. The kinetic results are correlated with the rate of alcoholysis reported by Frye, the relative equilibrium constant for the formation of [Me3Si-Nu]+X- complexes and the donor strength of nucleophile as measured by Taft's Beta values. The good correlation with the Beta values provides evidence that the rate of racemization is dependent upon the nucleophilicity of the donor species. The excellent linear correlation with Frye's ln k1 values further verifies the mechanism first postulated by Chojnowski. Rapid pre-equilibrium formation of [R3Si-Nu]+X- adducts is followed by slow attack of a second molecule of nucleophile. With strong nucleophiles, four coordinate ionic [PhMeHSi-Nu]+Cl- salts undergo second nucleophilic attacks yielding stable pentacoordinate [PhMeHSi-(Nu)2]+CL- ionic adducts. The collapse of the N-methyl resonances of DMF observed in the interactions of PhMeRSiCl (R=H, Me) with DMF may serve as an indication of N-silylation of DMF.
Mapping Trafficking Networks: A Data-Driven Approach to Disrupt Human Trafficking Post Russia-Ukraine Conflict
Creators: name: Ozer, Murat
name: Kucukkaya, Goksel
name: Kose, Yasin
name: Mukasheva, Assel
name: Ciris, Kazim
name: Penumatcha, Bharath V.
Publisher: name: arXiv
Year: 2025
Subjects: subject: Computers and Society (cs.CY)
subject: FOS: Computer and information sciences

description: This study proposes a prototype for locating important individuals and financial exchanges in networks of people trafficking that have grown during the conflict between Russia and Ukraine. It focuses on the role of digital platforms, cryptocurrencies, and the dark web in facilitating these operations. The research maps trafficking networks and identifies key players and financial flows by utilizing open-source intelligence (OSINT), social network analysis (SNA), and blockchain analysis. The results show how cryptocurrencies are used for anonymous transactions and imply that upsetting central coordinators may cause wider networks to become unstable. In order to combat human trafficking, the study emphasizes the significance of real-time data sharing between international law enforcement. It also identifies future directions for the development of improved monitoring tools and cooperative platforms.
Exilic Pan-Africanism: Refocusing Kwame Nkrumah’s Conakry Years, 1966–1971
Creators: name: Adeleke, Tunde
Year: 2020

description: This article looks at the years spent by Kwame Nkrumah in forced exile after the military coup in Ghana 1966 ousted him from power. Looking at his letters in combination with Nkrumah’s own published writings of the time, the Conakry years turn out to be pivotal moments in the evolution and maturation of Nkrumah’s revolutionary philosophizing. Critical examination and analysis of this phase provide clearer insights into the complexities and ambiguities of Nkrumah’s thinking, and deeper understanding of the blueprints he developed for Africa’s leadership of the global struggles of oppressed humanity. The article is structured according to the three themes which dominated Nkrumah’s Conakry years: First, ideas about how to regain what was lost in Ghana; second, mapping out blueprints and strategies for the leadership role Africa would assume in the global revolution; and third, responses to, and realigning with, the expanding and problematic diaspora contexts of the struggle.
Paraleurolobus chamaedoreae Russell 1994
Creators: name: Martin, Jon H.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aleyrodidae
Paraleurolobus
Paraleurolobus chamaedoreae

description: Paraleurolobus chamaedoreae Russell
(Figs 43, 114)
 Paraleurolobus chamaedoreae Russell, 1994: 540–546. Holotype, Mexico (intercepted at San Antonio, Texas).
DISTRIBUTION. Neotropical Region: Belize, Costa Rica, Mexico, Nicaragua.
 COMMENTS. Russell (1994) described this species from several quarantine interceptions in USA from Mexico, all involving cut palm foliage from Chamaedorea species, known as xate (pronounced sha­té) in the floristry industry. Only a single puparium has been collected in Belize, from a member of the Moraceae; there are also in BMNH three field­collected samples from Costa Rica, and two samples from Nicaragua, all of them collected from dicotyledonous hosts. Figure 43 shows principal characters, while figure 114 reveals its intricate cuticular folding.
description: Published as part of Martin, Jon H., 2005, Whiteflies of Belize (Hemiptera: Aleyrodidae) Part 2 - a review of the subfamily Aleyrodinae Westwood, pp. 1-116 in Zootaxa 1098 (1) on page 45, DOI: 10.11646/zootaxa.1098.1.1, http://zenodo.org/record/5051548
The sharp Hausdorff measure condition for length of projections
Creators: name: Peres, Yuval
name: Solomyak, Boris
Publisher: name: arXiv
Year: 2004
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: Primary: 28A80, Secondary: 28A75, 60D05, 28A78

description: In a recent paper, Pertti Mattila asked which gauge functions $ϕ$ have the property that for any planar Borel set $A$ with positive Hausdorff measure in gauge $ϕ$, the projection of $A$ to almost every line has positive length. We show that integrability near zero of $ϕ(r)/(r^2)$, which is known to be sufficient for this property, is also necessary if $ϕ$ is regularly varying. Our proof is based on a random construction adapted to the gauge function.
description: 11 pages, 1 figure
Η σχέση της δρομικής οικονομίας με τη θέση παιχνιδιού και την αγωνιστική κατηγορία σε αθλήτριες ποδοσφαίρου
Creators: name: Φραγκιαδάκη, Αμαλία Νικολάου
Publisher: name: Aristotle University of Thessaloniki
Year: 2021
Subjects: Δρομική οικονομία
Μέγιστη πρόσληψη οξυγόνου
Ποδόσφαιρο
Running economy
Maximal oxygen output
Football

description: Η δρομική οικονομία είναι ένας από τους βασικούς παράγοντες που καθορίζει την ποδοσφαιρική απόδοση. Σκοπός της παρούσας μελέτης ήταν ο προσδιορισμός της δρομικής οικονομίας αθλητριών ποδοσφαίρου διαφορετικού επιπέδου και η συγκριτική αξιολόγηση των δεδομένων μεταξύ των αγωνιστικών θέσεων στο σχηματισμό της ομάδας, καθώς και μεταξύ των αγωνιστικών κατηγοριών. Στη μελέτη συμμετείχαν 44 αθλήτριες οι οποίες αγωνίζονταν τη σεζόν 2018-2019 στις τρείς εθνικές κατηγορίες του Ελληνικού πρωταθλήματος (Α΄ Εθνική n=17, Β΄ Εθνική n=14, Γ΄ Εθνική n=13). Η αξιολόγηση της δρομικής οικονομίας έγινε με μέγιστη δοκιμασία στο δαπεδοεργόμετρο και εργοσπιρομετρία και υπολογίστηκε με το μέσο όρο της τιμής της VO2max στο τελευταίο λεπτό του σταδίου του συνεχόμενου πρωτοκόλλου στα 10 km/h. Από τα αποτελέσματα δεν υπήρξαν σημαντικές διαφορές ως προς τη δρομική οικονομία ανάμεσα στις αθλήτριες ποδοσφαίρου των διαφορετικών κατηγοριών ή των διαφορετικών αγωνιστικών θέσεων. Στατιστικά σημαντικές διαφορές υπήρξαν ανάμεσα στις παίκτριες της Α΄ και Β΄ Εθνικής Κατηγορίας ως προς την ταχύτητα επίτευξης της μέγιστης πρόσληψης οξυγόνου (vVO2max) και της ταχύτητας στο αναερόβιο κατώφλι (vAΤ), (p=0.05). Συμπερασματικά διαπιστώθηκε ότι η δρομική οικονομία δεν επηρεάζεται από την αγωνιστική κατηγορία ή την θέση παιχνιδιού μέσα στην ομάδα στο γυναικείο ποδόσφαιρο.
description: Football is described as an endurance sport and running economy is one of the main factors who determines endurance. The aim of this study was to evaluate the running economy of women football players and to analyze the data between different playing positions and different division levels. A total of forty four (44) women football players were evaluated. They were playing at the three divisions in Greece (Division I n=17, Division II n=14, Division III n=13) in 2018-2019 season. They underwent an incremental treadmill test to exhaustion using expired gas analysis on pulsar; h/p/Cosmos treadmill (Nussdorf-Traunstein, Germany). Running economy was calculated as the average of oxygen output (VO2) of the last minute at 10 km/h. All data were analyzed with the SPSS 25 statistical package. The results showed no statistical difference neither between running economy and playing position nor between running economy and division level. Finally, there was statistical difference between Division I and Division II at speed at maximal oxygen output (vVO2max) and speed at anaerobic threshold (vA.T.). In conclusion running economy is not affected by division level or playing position in women’s football.
Facets of Walter Rodney‘s Pan-African Intellectual Activism during his Dar es Salaam Years, 1966-1974
Creators: name: Harisch, Immanuel R.
Year: 2020

description: This contribution sets out to deeply “ground” Walter Rodney‘s Pan-African intellectual activism from 1966 to 1974 within the intellectual climate of the University of Dar es Salaam and the wider political context of Tanzania's socialist project ujamaa and beyond. In my analysis of Rodney's groundbreaking book How Europe Underdeveloped Africa, I delineate four central pillars which solidly rest on Pan-African thought: Africans' achievements and historic agency; nationalism as a liberating ideology for Africans and people of African descent; the Pan-African bridge across the Atlantic Ocean; and the exploitation of the African masses by the ruling classes. However, Rodney’s intellectual and political impact was not limited to How Europe Underdeveloped Africa. As a university lecturer, Rodney figured prominently in the restructuring of the curriculum of the future Institute of Development Studies; students were encouraged to perceive Africa in a holistic perspective, and to understand its active underdevelopment within the global capitalist system. At campus, Rodney also engaged with radical socialist students and university staff which fervently criticized imperialism, neo- colonialism and capitalist exploitation. Rodney's engagement during his Dar es Salaam years signify a globally informed Pan- African mindset that aimed to link the African diaspora and Africa more closely together; eager to convince oppressed people around the world to de-link from the global capitalist system and embark on a socialist path of heavy industrialization and development for the masses. The real obstacles of his difference in nationality, language and cultural background experienced by Rodney while living in Tanzania, also exemplify practical limitations which inform the complex nature of transnational and trans-Atlantic solidarities.
title: The origin and evolution of the porosity within the dolomitised carboniferous limestone of the Wirksworth area, Derbyshire
Creators: name: Munn, Donald
Publisher: name: The Open University
Year: 1981

description: A detailed study of the porosity development in the dolomitised Lower Carboniferous Limestone of the Wirksworth area has revealed a complex diagenetic history. The massively-bedded Asbian and Brigantian micarenites and sparenites became indurated largely during the Lower Carboniferous, within the active phreatic zone (saturated groundwater zone). The very high porosities of the carbonate sediments became occluded during this phase of diagenesis, to give the characteristic limestone porosity (2-8 percent). Dolomitisation occured prior to the late Triassic mineralisation, either at depth beneath the cover of Middle and Upper Carboniferous sediments or during the exposure of the limestone through the Edale Shales (Namurian) beneath the Zechstein Sea (Permian). Jointing has been shown to have had a primary control upon dolomitisation, although karstification, developed during the pre-Namurian exposure of the limestone, and stylolitisation were also important processes. The dolostones consist mainly of xenotopic-hypidiotopic types showing many calcite-filled polyhedral pores, although less common xenotopic and idiotopic dolostones do occur. The completely dolomitised xenotopic dolostones are thought to represent dolomitised micarenites, whilst the less completely dolomitised hypidiotopic and idiotopic.
Average size of random polygons with fixed knot topology
Creators: name: Matsuda, Hiroshi
name: Yao, Akihisa
name: Tsukahara, Hiroshi
name: Deguchi, Tetsuo
name: Furuta, Ko
name: Inami, Takeo
Publisher: name: arXiv
Year: 2003
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We have evaluated by numerical simulation the average size $R_K$ of random polygons of fixed knot topology $K = \emptyset, 3_1, 3_1\sharp4_1$, and we have confirmed the scaling law $R^2_K \sim N^{2ν_K}$ for the number $N$ of polygonal nodes in a wide range; $N = 100$ -- 2200. The best fit gives $2 ν_K \simeq 1.11$ -- 1.16 with good fitting curves in the whole range of $N$. The estimate of $2 ν_K$ is consistent with the exponent of self-avoiding polygons. In a limited range of $N$ ($N \gtrsim 600$), however, we have another fit with $2 ν_K \simeq 1.01$ -- 1.07, which is close to the exponent of random polygons.
description: 13 pages, 2 figures
Author Correction: Metabolomic epidemiology offers insights into disease aetiology
Creators: name: Chatelaine, Haley A.
name: Julián-Serrano, Sachelly
name: Sarvestani, Afrand K.
name: Shutta, Katherine H.
name: Hua, Xinwei
name: Fuller, Harriett
name: Raffield, Laura M.
name: Rahnavard, Ali
name: Drzymalla, Emily M.
name: Zhu, Yiwen
name: Sinnott-Armstrong, Nasa
name: Tahir, Usman A.
name: Darst, Burcu F.
name: Nicholas, Jayna
Publisher: name: Springer Nature
Year: 2024

description: Correction to "Metabolomic epidemiology offers insights into disease aetiology"
Government Commitment to Rural Development in Korea
Creators: name: Whang, In-Joung
name: Whang, In-Joung
Publisher: name: Unknown
Year: 1980
Subjects: Community/Rural/Urban Development

description: Rural development involves a system-wide change in rural communities which naturally requires a strong commitment by government to rural development on the one hand and the positive participation of rural people in the planning and implementation of rural prjects on the other. This paper considers govern­ment commitment as especially crucial to the process of project implementa­tion. This includes the activation of local government machinery, the execution of government tasks in support of rural projects and the monitoring of project performance. This case study analyses the critical role of political leadership in stimulating farmers, village leaders and government officials at the local level. It also de­monstrates that personal concern and the human aspect of the political system made the political system quite effective and functional in allorating resources, and facilitating institutional/legal rearrangement in favor of rural.development in Korea. This case study also analyzes the specific measures and steps taken by the government as part of its political commitment. These include organizational and institutional reforms, reorientation of the local government system to in­tegrated rural development, financial and budgetary commitment, extensive training of personnel outside and inside the government, suitable strategies in support of village enlightenment activities, and supporting policies and programs such as the high rice price policy and the agricultural research and development program. It should be borne in mind, however, that this study is concerned only with government commitment, which could not be effective without the positive response of the people, that is, without the people's active participation in self­help development projects at the grass-root level.
Using Response Times to Test the Reliability of Political Knowledge Items in the 2015 Swiss Post-Election Survey
Creators: name: Marquis, Lionel
Publisher: name: Survey Research Methods
Year: 2021

description: In this article, I consider the problem of “cheating” in political knowledge tests. This problem has been made more pressing by the transition of many surveys to online interviewing, opening up the possibility of looking up the correct answers on the internet. Several methods have been proposed to deal with cheating ex-ante, including self-reports of cheating, control for internet browsing, or time limits. Against this background, “response times” (RTs, i.e., the time taken by respondents to answer a survey question) suggest themselves as a post-hoc, unobtrusive means of detecting cheating. In this paper, I propose a cross-classified multilevel model for measuring individual-specific and item-specific RTs, which are then used to identify unusually long but correct answers to knowledge questions as potential cases of cheating. I apply this procedure to the postelectoral survey for the 2015 Swiss national elections. My analysis suggests that extremely slow responses to two out of four questions (i.e., naming the president of the Swiss Confederation and the number of signatures required for a federal initiative) are definitely suspi-cious. Finally, I propose several methods for “correcting” individual knowledge scores and examine their face-value validity.
description: Survey Research Methods, Vol 15 No 1 (2021)
Peracchius durantae Lima & Racca-Filho
Creators: name: Martin, Jon H.
Publisher: name: Zenodo
Year: 2005
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hemiptera
Aleyrodidae
Peracchius
Peracchius durantae

description: Peracchius durantae Lima & Racca­Filho
(Figs 137–138)
 Peracchius durantae Lima & Racca­Filho, 2005: 40. Holotype, Brazil.
DISTRIBUTION. Neotropical Region Belize, Brazil.
 COMMENTS. The description of this species was published as this manuscript was about to be submitted. Three puparia from the CFR, initially identified as members of the Dialeurodes group, were found to belong to P. durantae, but no host data are available. As described by Lima & Racca­Filho, the Belize puparia were also found feeding contiguous with major leaf veins.
description: Published as part of Martin, Jon H., 2005, Whiteflies of Belize (Hemiptera: Aleyrodidae) Part 2 - a review of the subfamily Aleyrodinae Westwood, pp. 1-116 in Zootaxa 1098 (1) on page 46, DOI: 10.11646/zootaxa.1098.1.1, http://zenodo.org/record/5051548
Trade Uber for the Bus?
Creators: name: Xiaoxia Dong
Publisher: name: Taylor & Francis
Year: 2020
Subjects: subject: Medicine
subject: Physiology
subject: FOS: Biological sciences
subject: Ecology
subject: Sociology
subject: FOS: Sociology
subject: 69999 Biological Sciences not elsewhere classified
subject: 111714 Mental Health
subject: FOS: Health sciences
subject: 110309 Infectious Diseases

description: Problem, research strategy, and findings: Few studies have examined ride-hail users’ individual preferences between ride-hail and transit. Based on a survey of ride-hail users in the Philadelphia (PA) region, I examine who uses ride-hail and investigate ride-hail users’ willingness to use ride-hail versus transit. My results suggest that more than one-quarter of respondents replaced transit with ride-hail in their last ride-hail trips. Mixed logit regression analysis based on stated preference choice experiments indicate that higher-income respondents and respondents over 30 years old are increasingly willing to choose ride-hail over transit, even though their actual ride-hail usage is lower than that among lower-income and younger respondents. Results also show that female respondents are more willing to choose ride-hail over transit than male respondents and less frequent transit users are more likely to choose ride-hail than frequent transit users. Higher cost and longer trip duration are significant deterrents for travel by either mode. Respondents consider the time spent on walking to and from transit more burdensome than in-vehicle travel time and wait time for transit and ride-hail. They consider waiting for ride-hail less burdensome than waiting for transit. Survey sampling and design limitations provide lessons for future ride-hail studies. Takeaway for practice: Practitioners should ensure convenient, affordable travel options for lower-income residents, who are more frequent but less willing ride-hail users than higher-income residents. Female respondents’ safety concerns about transit should urge transit agencies to recognize female transit riders’ travel needs. The relationship between age and willingness to use ride-hail reminds planners to anticipate greater substitution of ride-hail for transit as the more tech-savvy generation starts entering their 30s. Last, fare reduction alone may not be enough to prompt ride-hail users to switch to transit. Service improvements that shorten the overall trip duration are imperative to make transit more attractive.
Electronic Correlation Induced Expansion of Compensated Electron and Hole Fermi Pockets in delta-Plutonium
Creators: name: Tutchton, Roxanne
name: Chiu, Wei-ting
name: Albers, R. C.
name: Kotliar, G.
name: Zhu, Jian-Xin
Publisher: name: arXiv
Year: 2019
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: FOS: Physical sciences

description: Plutonium is a critically important material as the behavior of its 5f-electrons stands midway between the metallic-like itinerant character of the light actinides and localized atomic-core-like character of the heavy actinides. The delta-phase of plutonium (delta-Pu), while still itinerant, has a large coherent Kondo peak and strong electronic correlations coming from its near-localized character. Using sophisticated Gutwiller wavefunction and dynamical mean-field theory correlated theories, we study for the first time the Fermi surface and associated mass renormalizations of delta-Pu together with calculations of the de Haas-van Alphen (dHvA) frequencies. We find a large (200%) correlation-induced volume expansion in both the hole and electron pockets of the Fermi surface in addition to an intermediate mass enhancement. All of the correlated electron theories predict, approximately, the same hole pocket placement in the Brillouin zone, which is different from that obtained in conventional density-functional band-structure theory, whereas the electron pockets from all theories are in, roughly, the same place.
description: 7 pages with 3 jpg figures embedded, plus supplementary information
Rentability Analysis According to the Cultivation Method of SANG HWANG Mushroom(Phellinus ssp)
Creators: name: Lee, Youngsuk
name: Lee, Youngsuk
Publisher: name: Unknown
Year: 2004
Subjects: subject: Crop Production/Industries
subject: Rentability analysis
subject: Phellinus genus
subject: Sang Hwang Mushroom
subject: Cultivative method of Sang Hwang Mushroom

description: This research has been surveyed 32 mushroom farms where they are using the method of burying log into the soil(BM)and method of hanging log on the shelves in the house(HM) to find out the answer by interviewing and observation. For the HM, the farm invests 18,530,000 Won for the facilities, 2,600 hours for the labour, and 24,080,000 Won for the management. In the result of the investments, the farm earns 16.9718 billion Won by producing 5,062.5kg (Dry weight) that costs 17.2125 billion Won. For the BM, the farm invests 12,850,000 Won for the facilities, 918 hours for the labour, and 12,080,000 Won for the management. In the result of the investments, the farm earns 5.8904 billion Won by producing 1,768kg (Dry weight) that costs 6.0112 billion Won.
A Analysis on sui generis Systems for Intellectual Property Protection of Traditional Knowledge in WIPO Member Countries
Creators: name: Park, Dukbyeong
name: Park, Dukbyeong
Publisher: name: Unknown
Year: 2004
Subjects: subject: Agricultural and Food Policy
subject: sui generis system
subject: traditional knowledge
subject: intellectual property right

description: The study aims to analyze on sui generis systems for intellectual property protection of traditional knowledge in World Intellectual Property Organization (WIPO) member countries. The data were collected from the Reports submitted to WIPO Intergovernmental Committee (see annex 1. 2). First, whereas developing countries have preferred to a sui generis system, existing mechanisms for the protection of traditional knowledge seems to be the preference of advanced countries which are USA and Japan. Second, the perceived limitations in the application of intellectual property laws and procedures to the protection of traditional knowledge are novelty or originality (49.2%), individual/collective creation (36.1%), informal nature of traditional knowledge (32.8%), inventive step or non-obviousness (31.1%), and term of protection (23.0%). Third, the important factors which are for the policy choices reflected in the sui generis measures and laws for the protection of tradition knowledge are legal and policy framework, policy tool, policy objectives, and form of protection.
A Biographical Essay on Ruth Guimarães: A Black Writer in Brazil in the 1940s
Creators: name: D'Onofrio, Silvio Tamaso
name: Sonderegger, Arno
Year: 2020

description: This essay presents insights into the early career of Ruth Guimarães (1920-2014), the Afro-Brazilian writer from the São Paulo area renowned for her depiction of the Brazilian countryside. Coming of age in Brazil – an ex-colonial and post- emancipatory society, deeply (though unconsciously) shaped by both its oppressive past and present inequalities – her take on Brazilian national identity and on blackness is full of ambiguity but with a sharp sense of Africa`s impact on its history. Becoming part of a literary avant-garde group (the Baruel Circle) at the end of the 1930s allowed Ruth Guimarães to publish her early writings and enter the realm of Brazil`s literary establishment. With her first novel (Água-funda) published in 1946, she rose to prominence, but her first publication was the poem Caboclo originally appearing in 1939 – already full of hints to the issues of identity, rootedness and belonging, seen through the lens of mixture; the poem is republished here in its entirety for the first time. As none of her many works have been translated to English to date, this essay serves as an introduction of this Black woman writer – and of the worlds of Brazilian literature, journalism and publishing in the late 1930s and 40s, in which she launched her career – to an international audience.