Search results for "WAN"

Bicoherent-State Path Integral Quantization of a non-Hermitian Hamiltonian

2020

We introduce, for the first time, bicoherent-state path integration as a method for quantizing non-hermitian systems. Bicoherent-state path integrals arise as a natural generalization of ordinary coherent-state path integrals, familiar from hermitian quantum physics. We do all this by working out a concrete example, namely, computation of the propagator of a certain quasi-hermitian variant of Swanson's model, which is not invariant under conventional $PT$-transformation. The resulting propagator coincides with that of the propagator of the standard harmonic oscillator, which is isospectral with the model under consideration by virtue of a similarity transformation relating the corresponding…

2017

AbstractOccasionally, organisations are forced to adopt new practices that are inconsistent with the expectations of their stakeholders. An immediate adoption of the practices would risk the organisation’s legitimacy, but as previous research has noted, the perceptions of organisational stakeholders can be managed through symbolic actions. In this article, I examine how actors from four retail organisations symbolically legitimated the adoption of the hypermarket format within their individual contexts by means of internal professional magazines. The analysis suggests that the organisations buttressed their legitimacy by reversing Meyer and Rowan’s idea of loose coupling – adopting the new …

India Re-loaded: Vikas Swarup’s Slumdog Millionaire as a Postcolonial Novel

2012

Once “the jewel in the crown” of the British Empire, India for some time ceased to be the focus of interest for the British writers. Largely due to the success of its film version, Vikas Swarup’s Slumdog Millionaire (Black Swan, London, 2005, originally called Q and A) again drew the attention of the Western world to the problems postcolonial India has to face: poverty, crime, sex abuse, exploitation of children, police brutality and many more. In this paper, however, we are not going to compare the two versions of the story, i.e. the novel and the film, but primarily concentrate on the textual commentaries in the context of postcolonial theory and literature. Of particular interest for us …

From the theory of “congeneric surd equations” to “Segre's bicomplex numbers”

2015

We will study the historical pathway of the emergence of Tessarines or Bicomplex numbers, from their origin as "imaginary" solutions of irrational equations, to their insertion in the context of study of the algebras of hypercomplex numbers.

An Anthropological Insight on the Commonalities between Tourism and Archaeology

2019

Over the years, archaeology maturated towards something else than a scientific discipline. Archaeological sites are culturally showed as emerging and recycled tourist attractions (Robb 1998; Bateman 2006; Rowan & Baram 2004; Karlsson & Gustafsson, 2006). At a closer look, tourism is understood as a leisure activity which is enrooted in the needs of relaxing and evasion while archaeology -as a knowledge platform which is based on scientific method- explores the history of ancient cultures. This raises a more than interesting question respecting the commonalities and differences between archaeology and tourism. To some extent, archaeologists find ancient relics and objects whi…

Informatyczne wsparcie kryminalistycznych analiz informacji

2016

W opracowaniu podejmowana jest tematyka informatycznego wsparcia kryminalistycznych analiz informacji. Ze względu na ogrom następujących przemian społeczno-gospodarczych rośnie znaczenie implementacji nowych rozwiązań we współczesnej kryminalistyce. Rozwój technologiczny wymusza na organach ścigania korzystanie z nowoczesnych narzędzi informatycznych w celu dokonywania analizy informacji, w tym analizy kryminalnej oraz analizy śledczej. Obszarem dostrzeżonym w sektorze prywatnym są rozwiązania mobilne – skupione wokół telefonów komórkowych – które wciąż stanowią niewykorzystany w pełni potencjał na gruncie przeciwdziałania przestępczości

When and how should peritoneal endometriosis be operated on in order to improve fertility rates and symptoms? The experience and outcomes of nearly 1…

2021

Abstract Purpose To analyze the follow-up results of patients suffering from symptomatic early-stage endometriosis after a consistent laparoscopic peritoneal stripping of the altered peritoneum (peritoneal endometriosis and surrounding inflamed tissue) was performed. This type of endometriosis is resistant to medical therapy and/or impairs fertility. Methods Using our prospectively maintained database, we were able to identify all symptomatic women with the suspicion of only peritoneal endometriosis who underwent laparoscopy at our endometriosis center over a period of 5 years. All procedures were carried out in a standardized fashion by one single surgeon, who is highly experienced in mini…

Discovery privacy threats via device de-anonymization in LoRaWAN

2021

LoRaWAN (Long Range WAN) is one of the well-known emerging technologies for the Internet of Things (IoT). Many IoT applications involve simple devices that transmit their data toward network gateways or access points that, in their turn, redirect data to application servers. While several security issues have been addressed in the LoRaWAN specification v1.1, there are still some aspects that may undermine privacy and security of the interconnected IoT devices. In this paper, we tackle a privacy aspect related to LoRaWAN device identity. The proposed approach, by monitoring the network traffic in LoRaWAN, is able to derive, in a probabilistic way, the unique identifier of the IoT device from…

Coprinus dunarum (Dünen-Tintling) in Wanderdüne bei Langesciem (Fotografiert in Jahre 1925, 1926, 1929)

1929

Coprinus dunarum (Dünen-Tintling) in Dünamünde Pastorat Wanderdüne bei Langesciem mit Korrespondenz

1929

Zeichnung von Dünen-Tintling und Korrespondenz zwischen F. E. Stoll und K. R. Kupfer (Rigaer Gesellschaft der Naturforscher): "Ein von mir das Wanderdüne bei Langesciem entdeckten, das Wissenschaft nochunbekanter Pilz, das in das von den Deutchen Geseltschaft für Pilzen herrausgegeben "Zeitschrift für Pilzen" beschreiben in einer Farbentahfel und zwei Schvartafeln abgebildetun damit das Wissenschaftlische Weltbekant gegeben werden soll. Die reprodukktieres Karten stellen sich auf ca 400 Lat,.... F. E. Stoll. Riga, im April 1929 - Der Naturforscher-Verein zu Riga hat für dem vorstehen den Zeck 100 Lat bewilligt sintern der Voraussetzung, das die erwähnten Tafeln asicht im "Korresponenzblatte…