Achieving high resolution time-of-arrival (TOA) estimation in multipath propagation scenarios from bandlimited observations of communication signals is challenging because the multipath channel impulse response (CIR) is not bandlimited. Modeling the CIR as a sparse sequence of Diracs, TOA estimation becomes a problem of parametric spectral inference from observed bandlimited signals. To increase resolution without arriving at unrealistic sampling rates, we consider multiband sampling approach, and propose a practical multibranch receiver for the acquisition. The resulting data model exhibits multiple shift invariance structures, and we propose a corresponding multiresolution TOA estimation algorithm based on the ESPRIT algorithm. The performance of the algorithm is compared against the derived Cramér Rao Lower Bound, using simulations with standardized ultra-wideband (UWB) channel models. We show that the proposed approach provides high resolution estimates while reducing spectral occupancy and sampling costs compared to traditional UWB approaches.
In the last 20 years, Bosnia-Herzegovina has witnessed the creation of a grand narrative about the Srebrenica genocide. Affecting perceptions, renditions, and understandings of this event, this grand narrative promotes a specific meaning and interpretation of the war in Bosnia and of Bosniak suffering. Thanks to the grand narrative, particular tropes of the story of the Srebrenica genocide have come to the fore in its commemoration, also affecting the existing artistic memorial works. In this article, I trace the effects of the grand narrative on commemorative music dedicated to the Srebrenica genocide by focusing on the oratorio “Srebrenički Inferno.” By analyzing the oratorio in relation to the grand narrative, I argue that this musical piece is not only influenced by, but also helps to maintain and reinforce, this dominant story about the genocide that represents an important segment of politically advantageous official collective memory and history of the war and genocide among Bosniaks.
Abstract. The paper presents the application of some Virtual Reality technologies developed in the Horizon 2020 i-MARECulture project to the case study of the sunken “Villa con ingresso a protiro”, dated around the II century AD, and located in the Marine Protected Area - Underwater Park of Baiae (Naples).The i-MARECulture project (www.imareculture.eu), in fact, aims to improve the public awareness about the underwater cultural heritage by developing new tool and techniques that take advantage of the virtual reality technologies to allow the general public to explore the archaeological remains outside of the submerged environment.To this end, the paper details the techniques and methods adopted for the development of an immersive virtual tour that allow users to explore, through a storytelling experience, a virtual replica and a 3D hypothetical reconstruction of the complex of the “Villa con ingresso a protiro”.
This paper introduces the robust internal-loop compensator based sliding mode control (SMRIC) scheme for multiple-input multiple-output (MIMO) nonlinear systems subjected to mismatched uncertainties, which are time-varying and non-vanishing with non-constant steady-state values. The proposed approach extends an application area of the robust internal-loop compensator (RIC), as well as a class of mismatched uncertainties that could be imposed on the system. The developed SMRIC technique allows substantial alleviation of the chattering phenomenon in the presence of disturbances while retaining the nominal performance of the system in the absence of disturbances. The stability analysis of the closed-loop system is performed using the Lyapunov-based approach. The proposed SMRIC method guarantees the finite-time convergence of the system trajectories to the sliding surface and provides asymptotic stability of the equilibrium. The simulation results of the numerical example and both simulation and experimental results of the application example show that the proposed SMRIC technique exhibits, in comparison with the concurrent algorithms, excellent tracking performance and robustness properties in the presence of modeling uncertainties, parameter variations, external disturbances, and mismatched uncertainties.
Purpose: This paper looked into the experiences of refugee parents with an aim to uncover the challenges of parenting encountered during and after the asylum procedures in Bulgaria - a country placed at the bottom of the asylum recognition scale in Europe. Methods: Qualitative research through semi-structured interviews of eight parents originating from Iraq, Syria and Palestine was conducted during the 3 months’ period in 2016. Results: Empiric research conducted revealed that procedural shortcomings of refugee protection system in Bulgaria causes severe psychosocial stresses to families in that the factors, such as slow and deficient asylum procedures, inadequate social protection and absence of integration programs, have a direct impact on the family life, parenting and children’s wellbeing. Discussion: These results point to a clear need for improvement of the access to asylum right and subsequent refugee integration in Bulgaria. They also call for a systemic approach in which the refugee rights are fully respected and vulnerability inherent to the refugee parents’ liminal position properly addressed. We further recommend the interventions of social work and mental health professions in ameliorating existent stresses of exclusion and marginalisation of refugee families with an aim to advance their full integration rights.
Objectives: To determine the epidemiological features of patients and animals after bites/scratches from rabies-suspected animals in Zenica-Doboj Canton, Bosnia and Herzegovina. Methods: Data from all patients (and the causative animals) admitted to the Antirabies Service of the Institute for Health and Food Safety Zenica in the 2009-2017 period were analyzed, including age, sex, anatomical site of the bite/scratch, animal type (stray/owned/wildlife), veterinary observations of the animal, and whether antirabies post-exposure prophylaxis (PEP) was indicated and/or administered. Results: In total, 1716 patients were admitted. Bites/scratches were most frequently recorded during April and May (n=181, 10.5% and n=163, 9.5%, respectively). The persons admitted were mostly from the Zenica municipality (n=1278, 74.5%; incidence: 11.55/ 1000), which is 66.6% urbanized. Males were more frequently represented (n=1089, 63.6%). The patients were mostly 50-64 and 25-49 years of age (n=425, 24.7% and n=390, 22.7%, respectively). Dog bites were the most common cause (n=1634, 95.1%, of which n=1258, 77.0% were caused by stray dogs). PEP was indicated for 997 (58.1%) patients. Only 340 (19.9%) animals underwent veterinary observations (3.1% of stray and 76.1% of owned animals). The largest number of injuries were presented at lower extremities, 1044 (60.8%) cases. Conclusions: Zenica-Doboj Canton is a rabies-free region. Due to the high rate of stray animals not undergoing veterinary observations, the non-existence of a unique dog registry, and the consequent lack of information about stray animals in terms of number, vaccination, neutering, and euthanasia, there is an urgent need for improving the prevention and control of rabies within the One Health framework.
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