Forward observables at RHIC, the Tevatron run II and the LHC

We present predictions on the total cross sections and on the ratio of the real part to the imaginary part of the elastic amplitude (rho parameter) for present and future pp and pbar p colliders, and on total cross sections for gamma p -> hadrons at cosmic-ray energies and for gamma gamma -> hadrons up to sqrt(s)=1 TeV. These predictions are based on a study of many possible analytic parametrisations and invoke the current hadronic dataset at t=0. The uncertainties on total cross sections, including the systematic theoretical errors, reach 1% at RHIC, 3% at the Tevatron, and 10% at the LHC, whereas those on the rho parameter are respectively 10%, 17%, and 26%.Comment: 11 pages, 2 figures, LaTeX, presented at the Second International "Cetraro" Workshop & NATO Advanced Research Workshop "Diffraction 2002", Alushta, Crimea, Ukraine, August 31 - September 6, 200

Non-existence of normal tokamak equilibria with negative central current

Recent tokamak experiments employing off-axis, non-inductive current drive have found that a large central current hole can be produced. The current density is measured to be approximately zero in this region, though in principle there was sufficient current drive power for the central current density to have gone significantly negative. Recent papers have used a large aspect-ratio expansion to show that normal MHD equilibria (with axisymmetric nested flux surfaces, non-singular fields, and monotonic peaked pressure profiles) can not exist with negative central current. We extend that proof here to arbitrary aspect ratio, using a variant of the virial theorem to derive a relatively simple integral constraint on the equilibrium. However, this constraint does not, by itself, exclude equilibria with non-nested flux surfaces, or equilibria with singular fields and/or hollow pressure profiles that may be spontaneously generated.Comment: 5 pages, 3 figures. Submitted to Physics of Plasmas, Feb. 14, 2003. Revised Feb. 24, 2003. Vers. 2: revised May 29 to clarify points raised by referee, add references to recent work. July 18, accepted for publicatio

The role of digital consciousness in change management

The article deals with the problems of change management in the new conditions of superfragility of the BANI-world. Interpretations of the concepts of “transcendental thinking”, “digital consciousness”, “immersiveness” are given. The prerequisites substantiating the idea that transcendental thinking needs to be cultivated in the organisation in order to achieve effective management flexibility are presented. The latter is formed in the broader context of the digital consciousness organisational culture, without which it is impossible to set up the organisation’s staff for a positive perception of immersive management practices and the digital technologies productive use. Barriers to the transformation of organisational processes have been identified. It has been shown that the digital transformation of the organisation increases the resistance on the part of the staff by digital resistance plane, when aversion to any change correlates with a lack of ­understanding of digital opportunities. The relationship between the conceptual methodologies of digital consciousness and metacognition and the effectiveness of the formation of a change management strategy has been established

Digital consciousness as a factor of human capital formation in integration processes

The article studies problems of reintegration of social spaces in the conditions of new reality. The concepts of “reintegration”, “digital consciousness” and “human capital” have been interpreted. The concept of reintegration process based on the multiplicative effct of resulting sum of cognitive, axiological, and organizational vectors of social space reassembly on the basis of public support for its digital transformation has been presented. The paper presents assumptions justifying the idea that achieving effctive reintegration is primarily associated with economic development of a territory so it is necessary to form human capital on the basis of digital consciousness. In the modern world, digital consciousness is becoming a dominant cognitive factor as digital technologies are increasingly penetrating our lives and changing the way people interact. However, developing digital consciousness requires continuous learning and skill development. It can be achieved through professional training, self-education, and participation in projects related to digital transformation. Thus, digital consciousness can be considered as a factor ofhuman capital growth that can help people adapt to changing labor market conditions and work successfully in digital economy

The soft and the hard pomerons in hadron elastic scattering at small t

We consider simple-pole descriptions of soft elastic scattering for pp, pbar p, pi+ p, pi- p, K+ p and K- p. We work at t and s small enough for rescatterings to be neglected, and allow for the presence of a hard pomeron. After building and discussing an exhaustive dataset, we show that simple poles provide an excellent description of the data in the region - 0.5 GeV^2 < t < -0.1 GeV^2, 6 GeV<sqrt(s)< 63 GeV. We show that new form factors have to be used, and get information on the trajectories of the soft and hard pomerons.Comment: 27 pages, 9 figures, LaTeX. A few typos fixed, and references correcte

Phase diagram of superfluid 3He in "nematically ordered" aerogel

Results of experiments with liquid 3He immersed in a new type of aerogel are described. This aerogel consists of Al2O3 strands which are nearly parallel to each other, so we call it as a "nematically ordered" aerogel. At all used pressures a superfluid transition was observed and a superfluid phase diagram was measured. Possible structures of the observed superfluid phases are discussed.Comment: 6 pages, 8 figures. Submitted to Pis'ma v ZhETF (JETP Letters

Benchmarks for the Forward Observables at RHIC, the Tevatron-run II and the LHC

We present predictions on the total cross sections and on the ratio of the real part to the imaginary part of the elastic amplitude (rho parameter) for present and future pp and pbar p colliders, and on total cross sections for gamma p -> hadrons at cosmic-ray energies and for gamma gamma-> hadrons up to sqrt{s}=1 TeV. These predictions are based on an extensive study of possible analytic parametrisations invoking the biggest hadronic dataset available at t=0. The uncertainties on total cross sections, including the systematic errors due to contradictory data points from FNAL, can reach 1.9% at RHIC, 3.1% at the Tevatron, and 4.8% at the LHC, whereas those on the rho parameter are respectively 5.4%, 5.2%, and 5.4%.Comment: 11 pages, 2 figures, 4 tables, RevTeX

Dermatoscopic Pattern in Children with Microsporia and Pityriasis rosea

The present work includes a literature review and own investigations of dermatoscopic patterns of microsporia on the skin and pityriasis rosea in children. The method to investigate differential diagnosis between microsporia of the skin and the pityriasis rosea in children was the goal of the manuscript. Dermatoscopic examination of skin lesions is performed in 120 children using the manual contact dermatoscope (Heine Delta 20). In microsporia of the skin following dermatoscopic patterns were found: erythema without vessels in 56 patients (98.2%), white round spots (micro pustules compatible) at 30 examinees (52.6%), brown spots surrounded by a white-yellow halo with loss of vellus hairs were found in 50 children (87.7%), rough scales with chaotic distribution were detectable in 55 of 57 patients with microsporia (96.5%). In the following pityriasis rosea dermatoscopic signs were observed: a yellowish background at 60 children (95,2%), linear irregular vessels in 55 patients (87.3%), thin scales, located on the periphery “lace collar” in 59 of 63 surveyed (93.6%). Typical diagnostic patterns of the skin microsporia and pityriasis rosea in children were found. In the case of the microsporia of the skin, the diagnostic procedure supported the assessment of the involvement of vellus hairs and a timely prescription of systemic antifungal therapy, which shortens the duration of therapy.Die vorliegende Arbeit umfasst eine Literaturrecherche und eigene Untersuchungen der dermatoskopischen Muster der Mikrosporie an der Haut und der Pityriasis rosea bei Kindern. Es war Ziel des Manuskripts, die Verfahren zur Differenzialdiagnostik zwischen Mikrosporie der Haut und der Pityriasis rosea bei Kindern zu untersuchen. Eine dermatoskopische Untersuchung der Läsionen der Haut erfolgt bei 120 Kindern unter Anwendung des manuellen Kontaktdermatoskops (Heine Delta 20). Bei Mikrosporie der Haut wurden folgende dermatoskopische Muster gefunden: ein Erythem ohne Gefäße bei 56 Patienten (98,2%), weiße rundliche Flecken (mit Mikropusteln vereinbar) bei 30 Untersuchten (52,6%), braune Flecken umgeben von einem weiß-gelben Halo mit Verlust von Vellushärchen fanden sich bei 50 Kindern (87,7%), grobe Schuppen mit chaotischer Verteilung waren bei 55 von 57 der Patienten mit einer Mikrosporie (96,5%) nachweisbar. Bei der Pityriasis rosea wurden folgende dermatoskopische Zeichen festgestellt: ein gelblicher Hintergrund bei 60 Kindern (95,2%), lineare irreguläre Gefäße bei 55 Patienten (87,3%), dünne Schuppen, an der Peripherie gelegen als Spitzenkragen bei 59 von 63 Untersuchungspersonen (93,6%). Es wurden typische diagnostische Muster der Mikrosporie der Haut und der Pityriasis rosea bei Kindern festgestellt. Bei der Mikrosporie der Haut unterstützte das diagnostische Verfahren die Einschätzung der Beteiligung von Vellushärchen und eine rechtzeitige Verordnung der systemischen antimykotischen Therapie, was die Therapiedauer Verkürzt