Az üzleti hírszerzés szerepe a vállalatirányításban

A szerzők az üzleti hírszerzés speciális feladatait elemzik dolgozatukban. Egy olyan új tevékenységet mutatnak be, amely már hazánkban is elfogadottá, mi több: szakmává vált. A Budapesti Műszaki és Gazdaságtudományi Egyetem Mérnöktovábbképző Intézete megkezdte a téma menedzsereknek szóló jellemzőinek oktatást. A cikk írói szerzőként jegyzik az Üzleti hírszerzés című tankönyvet, amely Magyarországon az első ilyen témájú összefoglaló mű

Positive graphs

We study ‘‘positive’’ graphs that have a nonnegative homomorphism number into every edge-weighted graph (where the edge weights may be negative). We conjecture that all positive graphs can be obtained by taking two copies of an arbitrary simple graph and gluing them together along an independent set of nodes. We prove the conjecture for various classes of graphs including all trees. We prove a number of properties of positive graphs, including the fact that they have a homomorphic image which has at least half the original number of nodes but in which every edge has an even number of pre-images. The results, combined with a computer program, imply that the conjecture is true for all but one graph up to 10 nodes. © 2015 Elsevier Ltd.All rights reserved

Loci Memoriae Hungaricae

Miklós Takács: Preface - 7 ; 1. Theoretical reflections ; Zsófia O. Réti: Memory of Networks, Networks of Memory - 10 ; Gábor Palkó: The Phenomenon of “Linked Data” from a Media Archaeological Perspective - 23 ; 2. Digital Memory in Everyday Life ; Norbert Krek: Lieux de Mémoire and Video Games: Mnemonic Representations of the Second World War in First Person Shooter Games of the Early Twenty-first Century - 32 ; Antti Vallius: Landscapes of Belonging: Visual Memories in the Digital Age - 43 ; László Z. Karvalics: Defining Two Types of Cultural “Micro-heritage”: Objects, Knowledge Dimensions and a Quest for Novel Memory Institutions - 58 ; 3. New Media for Old Ideologies Tuija Saresma: Circulating the Origin Myth of Western Civilization – The Racial Imagery of the ‘Men of the North’ as an Imaginary Heritage in White Supremacist Blogs - 68 ; Klára Sándor: Versions of Folk History Representing Group Identities: The Battle for the Masternarrative - 82 ; 4. Rethinking Hungarian Collective Memory Katalin Bódi: Image and Imagination: The Changing Role of Art from the Nineteenth Century to the Present in Hungarian National Memory - 92 ; Zsófia Fellegi: Digital Philology on the Semantic Web: Publishing Hungarian Avant-garde Magazines - 105 ; Norbert Baranyai: Cult, Gossip, Memory—Aspects of Mediating Culture in Krisztián Nyáry’s Portraits of Writers in Facebook Posts - 117 ; Notes on Contributors - 127 ; Index - 13

Myocardial viability and survival in ischemic left ventricular dysfunction

The assessment of myocardial viability has been used to identify patients with coronary artery disease and left ventricular dysfunction in whom coronary-artery bypass grafting (CABG) will provide a survival benefit. However, the efficacy of this approach is uncertain.In a substudy of patients with coronary artery disease and left ventricular dysfunction who were enrolled in a randomized trial of medical therapy with or without CABG, we used single-photon-emission computed tomography (SPECT), dobutamine echocardiography, or both to assess myocardial viability on the basis of prespecified thresholds.Among the 1212 patients enrolled in the randomized trial, 601 underwent assessment of myocardial viability. Of these patients, we randomly assigned 298 to receive medical therapy plus CABG and 303 to receive medical therapy alone. A total of 178 of 487 patients with viable myocardium (37%) and 58 of 114 patients without viable myocardium (51%) died (hazard ratio for death among patients with viable myocardium, 0.64; 95% confidence interval [CI], 0.48 to 0.86; P=0.003). However, after adjustment for other baseline variables, this association with mortality was not significant (P=0.21). There was no significant interaction between viability status and treatment assignment with respect to mortality (P=0.53).The presence of viable myocardium was associated with a greater likelihood of survival in patients with coronary artery disease and left ventricular dysfunction, but this relationship was not significant after adjustment for other baseline variables. The assessment of myocardial viability did not identify patients with a differential survival benefit from CABG, as compared with medical therapy alone. (Funded by the National Heart, Lung, and Blood Institute; STICH ClinicalTrials.gov number, NCT00023595.)

Properties of a random attachment growing network

In this study we introduce and analyze the statistical structural properties of a model of growing networks which may be relevant to social networks. At each step a new node is added which selects 'k' possible partners from the existing network and joins them with probability delta by undirected edges. The 'activity' of the node ends here; it will get new partners only if it is selected by a newcomer. The model produces an infinite-order phase transition when a giant component appears at a specific value of delta, which depends on k. The average component size is discontinuous at the transition. In contrast, the network behaves significantly different for k=1. There is no giant component formed for any delta and thus in this sense there is no phase transition. However, the average component size diverges for delta greater or equal than one half.Comment: LaTeX, 19 pages, 6 figures. Discussion section, comments, a new figure and a new reference are added. Equations simplifie

Energy gap in superconducting fullerides: optical and tunneling studies

Tunneling and optical transmission studies have been performed on superconducting samples of Rb3C60. At temperatures much below the superconducting transition temperature Tc the energy gap is 2 Delta=5.2 +- 0.2meV, corresponding to 2 Delta/kB Tc = 4.2. The low temperature density of states, and the temperature dependence of the optical conductivity resembles the BCS behavior, although there is an enhanced ``normal state" contribution. The results indicate that this fulleride material is an s-wave superconductor, but the superconductivity cannot be described in the weak coupling limit.Comment: RevTex file with four .EPS figures. Prints to four pages. Also available at http://buckminster.physics.sunysb.edu/papers/pubrece.htm

Fabry-betegség - Diagnosztikai útmutató

A Fabry-kór a lizoszomális tárolási betegségek csoportjába tartozó, X-kromoszómához kötötten, recesszív módon öröklődő betegség, amely a globotriaosylceramid felhalmozódásához vezet a szervezet legkülönbözőbb szöveteiben. A betegség első tünetei többnyire gyermekkorban jelentkeznek, a progresszió során a betegek súlyos szervi károsodásokkal és korai halálozással számolhatnak. Elsősorban fiúk és férfiak érintettek, azonban a betegség tüneteit heterozigóta nők esetében is megfigyelhetjük, de náluk a kórkép súlyossága változó, általában enyhébb lefolyású. Az enzimpótló kezelések megjelenése szükségessé tette, hogy részletes diagnosztikus és terápiás protokollt dolgozzunk ki. A jelen dolgozatban megjelenő ajánlásokat egy, a magyarországi Fabry-betegek kezelésében aktívan részt vevő orvosokból, a diagnosztika területén dolgozó biológosukból és egyéb szakemberekből álló multidiszciplináris munkacsoport foglalta össze. A munkacsoport áttekintette a korábbi klinikai tanulmányokat, a publikált vizsgálatokat és a közelmúltban megjelent nemzetközi és nemzeti útmutatókat. | Fabry disease is a rare, X-linked lysosomal storage disorder that leads to accumulation of globotriaosylceramide in different tissues of the body. The disease is progressive, first symptoms usually present in childhood. Consequencies of the diseases are disability and premature death. The disease in females could be as severe as in males although women may also be asymptomatic. The possibility of enzyme replacement therapy has made it necessary to elaborate a comprehensive guideline for the diagnosis and treatment follow-up. The guideline was established by a Hungarian multi-disciplinary working group, consisting of physicians who are involved in health care of Fabry patients. Previous clinical studies, published materials, and recently established international treatment guidelines were reviewed by the group

Advanced LIGO

The Advanced LIGO gravitational wave detectors are second-generation instruments designed and built for the two LIGO observatories in Hanford, WA and Livingston, LA, USA. The two instruments are identical in design, and are specialized versions of a Michelson interferometer with 4 km long arms. As in Initial LIGO, Fabry-Perot cavities are used in the arms to increase the interaction time with a gravitational wave, and power recycling is used to increase the effective laser power. Signal recycling has been added in Advanced LIGO to improve the frequency response. In the most sensitive frequency region around 100 Hz, the design strain sensitivity is a factor of 10 better than Initial LIGO. In addition, the low frequency end of the sensitivity band is moved from 40 Hz down to 10 Hz. All interferometer components have been replaced with improved technologies to achieve this sensitivity gain. Much better seismic isolation and test mass suspensions are responsible for the gains at lower frequencies. Higher laser power, larger test masses and improved mirror coatings lead to the improved sensitivity at mid and high frequencies. Data collecting runs with these new instruments are planned to begin in mid-2015

Searches for continuous gravitational waves from nine young supernova remnants

science data run. The targets were nine young supernova remnants not associated with pulsars; eight of the remnants are associated with non-pulsing suspected neutron stars. One target’s parameters are uncertain enough to warrant two searches, for a total of ten. Each search covered a broad band of frequencies and first and second frequency derivatives for a fixed sky direction. The searches coherently integrated data from the two LIGO interferometers over time spans from 5.3–25.3 days using the matched-filtering F-statistic. We found no credible gravitational-wave signals. We set 95% confidence upper limits as strong (low) as 4 × 10−25 on intrinsic strain, 2 × 10−7 on fiducial ellipticity, and 4 × 10−5 on r-mode amplitude. These beat the indirect limits from energy conservation and are within the range of theoretical predictions for neutron-star ellipticities and r-mode amplitudes.Fil: Dominguez, Alfredo Eduardo. Ministerio de Defensa. Fuerza Aerea Argentina; ArgentinaFil: Ortega Larcher, Walter Emanuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Unidad de Investigación y Desarrollo Estrategico Para la Defensa. Subsede Instituto Universitario Aeronautico | Ministerio de Defensa. Unidad de Investigación y Desarrollo Estrategico Para la Defensa. Subsede Instituto Universitario Aeronautico; ArgentinaFil: Aasi, J.. California Institute of Technology; Estados UnidosFil: Abbott, B. P.. California Institute of Technology; Estados UnidosFil: Abbott, R.. California Institute of Technology; Estados UnidosFil: Abbott, T.. State University of Louisiana; Estados UnidosFil: Abernathy, M. R.. California Institute of Technology; Estados UnidosFil: Acernese, F.. Universita di Salerno; Italia. Istituto Nazionale Di Fisica Nucleare; ItaliaFil: Ackley, K.. University of Florida; Estados UnidosFil: Adams, C.. Livingston Observatory; Estados UnidosFil: Adams, T.. Cardiff University; Reino Unido. Centre National de la Recherche Scientifique; Francia. Université de Savoie; FranciaFil: Adams, T.. Centre National de la Recherche Scientifique; Francia. Université de Savoie; FranciaFil: Addesso, P.. University of Sannio at Benevento; Italia. Istituto Nazionale Di Fisica Nucleare; ItaliaFil: Adhikari, R. X.. California Institute of Technology; Estados UnidosFil: Adya, V.. Max Planck Institut für Gravitationsphysik; AlemaniaFil: Affeldt, C.. Max Planck Institut für Gravitationsphysik; AlemaniaFil: Agathos, M.. Nikhef; Países BajosFil: Agatsuma, K.. Nikhef; Países BajosFil: Aggarwal, N.. Massachusetts Institute of Technology; Estados UnidosFil: Aguiar, O. D.. Centro de Previsao de Tempo e Estudos Climáticos. Instituto Nacional de Pesquisas Espaciais; BrasilFil: Ain, A.. Inter-University Centre for Astronomy and Astrophysics; IndiaFil: Ajith, P.. Tata Institute of Fundamental Research; IndiaFil: Alemic, A.. Syracuse University; Estados UnidosFil: Allen, B.. University of Wisconsin-Milwaukee; Estados Unidos. Max-Planck-Institut für Gravitationsphysik; AlemaniaFil: Allocca, A.. Università degli Studi di Siena; Italia. Istituto Nazionale Di Fisica Nucleare; ItaliaFil: Amariutei, D.. University of Florida; Estados UnidosFil: Anderson, S. B.. California Institute of Technology; Estados UnidosFil: Anderson, W. G.. University of Wisconsin–Milwaukee; Estados UnidosFil: Arai, K.. California Institute of Technology; Estados UnidosFil: Araya, M. C.. California Institute of Technology; Estados Unido

Directed search for gravitational waves from Scorpius X-1 with initial LIGO data

We present results of a search for continuously emitted gravitational radiation, directed at the brightest low-mass x-ray binary, Scorpius X-1. Our semicoherent analysis covers 10 days of LIGO S5 data ranging from 50-550 Hz, and performs an incoherent sum of coherent F-statistic power distributed amongst frequency-modulated orbital sidebands. All candidates not removed at the veto stage were found to be consistent with noise at a 1% false alarm rate. We present Bayesian 95% confidence upper limits on gravitational-wave strain amplitude using two different prior distributions: a standard one, with no a priori assumptions about the orientation of Scorpius X-1; and an angle-restricted one, using a prior derived from electromagnetic observations. Median strain upper limits of 1.3×10-24 and 8×10-25 are reported at 150 Hz for the standard and angle-restricted searches respectively. This proof-of-principle analysis was limited to a short observation time by unknown effects of accretion on the intrinsic spin frequency of the neutron star, but improves upon previous upper limits by factors of ∼1.4 for the standard, and 2.3 for the angle-restricted search at the sensitive region of the detector