Suchergebnisse

Tsunami, numerical model, finite element, unstructured mesh, adaptive mesh. - The devastating Sumatra-Andaman tsunami of December 2004, is a milestone for the international community striving to introduce measures to prevent hazards from (future) tsunamis. One of the measures is numerical modeling which plays a key role for predictions as well as inundation mapping developments. Numerical modeling has been used as a tool for analyzing and reconstructing tsunamis for almost 40 years. Nowadays, many tsunami codes are available as open-source or free-ware and widely used in the tsunami modeling community. Many numerical methods have been applied such as finite difference, finite element and finite volume. The same applies to gridding methods, such as structured and unstructured non-adaptive types. This thesis introduces a new triangle-based adaptive mesh finite element model for tsunami propagation (and inundation) simulations. TsunaFLASH combines a numerical method developed in the framework of the unstructured triangular element, yet non-adaptive, tsunami model TsunAWI with adaptive mesh refinement capabilities provided by the library amatos. The methods are well suited for accurate resolution of localized features, maintaining computational efficiency in terms of the number of computations and the required memory. In this first developments of TsunaFLASH, a number of experiments have been performed for testing. There are: An experiments on various initial conditions, from an analytical source up to a coupling to the sophisticated rupture generator RuptGen; experiments with diverse error estimators for testing refinement criteria and adaptation algorithms; benchmark experiments using analytical solutions and field observations where the analytical solution is derived from the first benchmark problem from The International LongWaves reference; and the sea surface elevation in the field data experiment is used from the satellite tracks of Jason-1 and Topex for verification of the Sumatra- Andaman mega-tsunami 2004 event, while the water level reading of DART 23401 is used for the verification of the Andaman minor tsunami 2009 ...

Health is the highest value, which was further confirmed by the events related to the spread of coronavirus infection, which destabilized all social processes. This article discusses scientific approaches that explain the specifics of the formation of gender-specific attitudes to health. In this article, an attempt is made to analyze the gender characteristics of the attitude to health in relation to the regional attempt. The significance of the study of the practices of health-saving behavior of men and women in conditions of increased epidemiological load is determined. The analysis carried out in the article is based on the results of a sociological study conducted in April–May 2021 among the population of the Kursk and Belgorod regions. The sample size was 657 people. Based on the results obtained, regional peculiarities of behavior in the field of health of residents of Kursk and Belgorod are identified.

An attempt is presented to measure and compare attitudes to and ideas about psychiatry and mental health services in Concepcion, Sheffield and Trieste. These cities have in some respects comparable populations but very different mental health services. Questionnaires in English, Italian and Spanish were used to assess the views of professional workers in the field. The information collected showed that the Italian professionals had the highest level of satisfaction with their work, showed most tolerance of deviant behaviour in the community, the least acceptance of diminished responsibility in law and a non- traditional view of psychiatry. Clearly Chilean professionals held a very traditional view and medicalised approach to mental illness but an encouraging theoretical approval towards eventual changes in the services, along with the lowest level of satisfaction with their work. Professionals from Sheffield held an intermediate position coming closer to the theoretical view of the Chileans but nearer to the Italian praxis and therapeutic approach.

Bluetooth has constantly evolved from its cradle in 1997 to the last 5.2 version in 2020. With each update and amendment, it has gained in speed, range, and versatility. One of the latest introductions was the Bluetooth Mesh Profile (BMP) making it a technology suitable for a wide variety of applications. Nevertheless, BMP was designed to maintain the compatibility with Bluetooth version 4 devices already deployed in the market. This imposes some restrictions that place Bluetooth Mesh under other competing technologies like Zigbee or Thread in terms of throughput performance. In this paper we propose two mechanisms to overcome these limitations and take advantage of the new extended advertising capabilities introduced with Bluetooth 5. These mechanisms are presented as modifications to the current protocol stack to allow the transmission of larger data structures. Thus, it is possible to boost the throughput of Bluetooth Mesh making it suitable to more demanding applications like, for example, image transmission. The first proposal is designed as an adaptation layer to avoid modifying the standard in its current form. The second makes minimal changes to the frame structure at the different layers enabling the user to accommodate possible encapsulations (i.e., tunneling) without incurring IPv6-layer fragmentation. We have analyzed both solutions and compared them with the current BMP in terms of throughput, delay, and energy consumption for different channel conditions and network size. The results show that except for very small messages or poor channel conditions the proposals improve the throughput and delay of the current BMP. ; This work was supported in part by the Spanish Ministry of Science through the European Regional Development Funds (ERDF) under Project RTI2018-099880-B-C32, Project RTI2018-095684-B-I00, and Project RTI2018-099063-B-I00; and in part by the Government of Aragon (Reference Group) under Grant T31_20R. ; Peer Reviewed ; Postprint (published version)

Survey of the attitudes of the general public to health and social services

An essay for Bracket journal drawing on the work of political economist Albert O. Hirschmann to speculate on the possibility of 'exit spaces' enabled by networked technology to exist outside of state or corporate oversight and control. The essay explores the history of these spaces from the Koreshan commune, to Occupy, Seasteading, and the opportunity for them to exist digitally in forms such as mesh networks.

Wireless mesh networking is rapidly gaining in popularity with a variety of users: from municipalities to enterprises, from telecom service providers to public safety and military organizations. This increasing popularity is based on two basic facts: ease of deployment and increase in network capacity expressed in bandwidth per footage; WMNs do not rely on any fixed infrastructure. Many efforts have been used to maximizing throughput of the network in a multi-channel multi-radio wireless mesh network. Current approaches are purely based on either static or dynamic channel allocation approaches. In this paper, we use a hybrid multichannel multi radio wireless mesh networking architecture, where static and dynamic interfaces are built in the nodes. Dynamic Adaptive Channel Allocation protocol (DACA), it considers optimization for both throughput and delay in the channel allocation. The assignment of the channel has been allocated to be codependent with the routing problem in the wireless mesh network and that should be based on passage flow on every link. Temporal and spatial relationship rises to re compute the channel assignment every time when the pattern changes in mesh network, channel assignment algorithms assign channels in network. In this paper a computing path which captures the available path bandwidth is the proposed information and the proficient routing protocol based on the new path which provides both static and dynamic links. The consistency property guarantees that each node makes an appropriate packet forwarding decision and balancing the control usage of the network, so that a data packet will traverse through the right path.