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Almost 10 years have passed since microtektites and microkrystites were reported for the Paleocene–Eocene (P–E) boundary in drill cores and outcrop in New Jersey and in ODP Hole 1051B in the western North Atlantic. The glassy spherules were interpreted to reflect an impact trigger for the Paleocene–Eocene Thermal Maximum (PETM). Since then, many detailed studies of sediment strata across the P–E b
Temperature recordings from a moving vehicle are frequently used in microclimatological research. This work aims at investigating three aspects of the quality and the representability of mobile-recorded temperature data: the displacement of air near the car's front; the inertia of the sensors which hinders the accurate recording of fast fluctuations, and how good temperature profiles obtained
Under och efter katastrofer och nödsituationer samlas många olika organisationer för att hjälpa de drabbade. Det kan vara t.ex. polis, brandkår, sjukvård, eller elbolag som måste reparera ledningsnät. Vid större katastrofer kan myndigheter och internationella hjälporganisationer också behöva komma till undsättning. För att dessa organisationer ska kunna hjälpa till på ett effektivt sätt måste de hThis Master degree project identified disasters and emergencies as a global humanitarian and technological challenge. Emergency management organizations' need for access to accurate and up-to-date information about the emergency situation, to help respond to, recover from and mitigate the effects of disasters and emergencies, presents a challenge to the field of Geomatics. Today the use of re
Purpose – The rapid proliferation of mobile context aware applications has resulted in an increased research interest towards developing specialized context data management strategies for mobile entities. The purpose of this paper is to aim to develop a new way to model mobile entities and manage their contexts accordingly. Design/methodology/approach – This paper proposes the concept of “Mobile
Despite developments in economic growth theory, the importance of savings and investment has remained consistent. It intrinsically connects to the importance of functioning financial intermediation and high levels of financial inclusion. While Sub-Saharan Africa still lags, Tanzania has during the last decade seen a rapid rise in mobile money services. This paper attempts to answer the potential o
While machines are getting better at simulating human behavior it has become more common with the use of avatars and conversational text in mobile applications. These are used in order to induce a reflectively positive experience for the user, possibly making the user choose that application in favor of another. The balance between developing a too playful application and an uninteresting one is h
This article addresses forward motion control for trajectory tracking and mobile formation coordination for a group of nonholonomic vehicles on SE(2). First, by constructing an intermediate attitude variable which involves vehicles' position information and desired attitude, the translational and rotational control inputs are designed in two stages to solve the trajectory tracking problem. Second,
Mobile Stroke Units (MSUs) are specialized ambulances that can diagnose and treat stroke patients; hence, reducing the time to treatment for stroke patients. Optimal placement of MSUs in a geographic region enables to maximize access to treatment for stroke patients. We contribute a mathematical model to optimally place MSUs in a geographic region. The objective function of the model takes the tra
Syfte: Syftet med denna studie är att undersöka vilka faktorer vid företagens börsintroduktioner, på NASDAQ OMX Stockholm och NGM Equity under åren 2001-2008, som påverkar sannolikheten att en efterföljande nyemission inträffar inom en kort tidsperiod (tre år). Metod: Studien är en kvantitativ undersökning där faktorer vid företagens IPO påverkar sannolikheten att en efterföljande SEO inträffar i
The position and orientation estimation problem for mobile robots is approached by fusing measurements from inertial sensors, wheel encoders, and a camera. The sensor fusion approach is based on the standard extended Kalman filter, which is modified to handle measurements from the camera with unknown prior delay. A real-time implementation is done on a four-wheeled omni-directional mobile robot, u
We review approaches to predicting carbon and nitrogen allocation in forest models in terms of their underlying assumptions and their resulting strengths and limitations. Empirical and allometric methods are easily developed and computationally efficient, but lack the power of evolution-based approaches to explain and predict multifaceted effects of environmental variability and climate change. In
NA44 uses a 512-channel Si pad array covering 1.5
Popular Abstract in Swedish Frågorna som partikelfysiker ställer är samma frågorna som folk har ställt under hela mänsklighetens tid på jorden, nämligen: Var kommer vi från? Vad är det som bygger upp det universum som vi ser? Hur håller allting ihop? Fysiker, historiens stora tänkare och hobbyfilosofen i pubben har alla funderat över de här frågorna (vissa mer än andra). Partikelfysiker försöker hAn introduction into the theory and experimental background of particle physics and the ATLAS detector is given. The transition radiation tracker (TRT) which is vital to the particle tracking and identification is then described giving particular creedence to the calibration. The automation of this calibration is explained. The second half of this thesis and the central part dwells on the analyses
A search for excited quarks is performed using the full e(+/-)p data sample collected by the HI experiment at HERA, corresponding to a total integrated luminosity of 475 pb(-1). The electroweak decays of excited quarks q* -> q gamma. q* -> qZ and q* - qW with Subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for first generation excited quark production is fo
