38 research outputs found
Callers’ experiences of contacting a national suicide prevention helpline
No full textBackground: Helplines are a significant phenomenon in the mixed economy of health and social care. Given the often anonymous and fleeting nature of caller contact, it is difficult to obtain data about their impact and how users perceive their value. This paper reports findings from an online survey of callers contacting Samaritans emotional support services. Aims: To explore the (self-reported) characteristics of callers using a national suicide prevention helpline and their reasons given for contacting the service, and to present the users’ evaluations of the service they received. Methods: Online survey of a self-selected sample of callers. Results: 1,309 responses were received between May 2008 and May 2009. There were high incidences of expressed suicidality and mental health issues. Regular and ongoing use of the service was common. Respondents used the service for complex and varied reasons and often as part of a network of support. Conclusions: Respondents reported high levels of satisfaction with the service and perceived contact to be helpful. Although Samaritans aims to provide a crisis service, many callers do not access this in isolation or as a last resort, instead contacting the organization selectively and often in tandem with other types of support
Regionalisation of heat waves in southern South America
No full textThis study describes the climatological characteristics of regional heat waves (HWs) over southern South America (SSA) for the warm seasons (October–March) of 1979–2018 based on daily maximum temperature series from 131 weather stations. Clustering of stations with high co-occurrence of simultaneous HW days is employed to identify regional HW events over five homogeneous regions: northern, central-eastern and southern SSA regions, central Argentina, and central Chile. When all regions are considered, we find a mean frequency of ∼4 HWs per year. Transitional regions (northern SSA, central-eastern SSA and central Argentina) are characterised by longer, albeit less intense, HWs than the southernmost region (southern SSA), whereas central Chile events display the lowest duration, intensity and extension. By aggregating these single HW attributes into a combined severity index, a ranking of historical HWs has been obtained, with the March 1980 event standing as the most severe one of SSA. The assessment of long-term changes reveals significant increases in the frequency of regional HW days over central Argentina and central Chile only. Trends in HW characteristics are also region dependent, and the southernmost region is the only one where HW severity has increased significantly.We report similarities and differences in the synoptic circulation patterns associated with regional HW events. Southern SSA HWs have the most distinctive signatures, related to extratropical high-pressure systems blocking the westerly flow. In the remaining regions, HWs are associated with anomalies in the South Atlantic (northern SSA, central-eastern SSA and central Argentina) or South Pacific (central Chile) High, and the intensification of the northerly low-level flow by regional thermal lows and South American Low Level Jet events. Regional HWs often migrate from northern to central-eastern SSA and central Argentina, following the displacement/intensification of the South Atlantic High, which partially explains the similarity of their associated patterns
On the Scalability of Ad Hoc Wireless Networks
No full text... considers the problem of scaling ad hoc wireless networks now being applied to urban mesh and sensor networks scenarios. Ad hoc networks involve multi-hop communication which has inherent scaling problems in that throughput per node drops as the square root of the number of nodes in the network. We investigate mechanisms for improving performance and scalability of multi-hop wireless networks, with focus on system architecture and routing protocol aspects. First we propose a generalized multi-tier hierarchical hybrid network with three tiers of radio nodes: low-power end-user mobile nodes (MN) at the lowest tier, higher power radio forwarding nodes (FN) that support multi-hop routing at intermediate level, and wired access points (AP) at the highest level. We present an analytical model for the capacity of the proposed network and identify conditions on transmission range and node density for scalability to be maintained. From the derived upper and lower bounds, it is shown that the low-tier capacity increase linearly with the number of FN’s, and the high-tier capacity grows linearly with the number of AP’s in the scaling region. The analytically obtained capacity results are validated with detailed system simulations for dense network scenarios. The simulation study also examines the allocation of separate channels t
Meeting the Spirit of Place: Romantic Experience of the Suli Mountains in Epirus in the Nineteenth‑Century Travelogues from Greece
No full textThe article concerns the 19th century travelogues from the Suli Mountains in South Epirus. The corpus consists of twelve texts (eleven written in English and one in French), which are discussed in the context of engravings sketched by the travellers. Taking into account the Romantic character of the 19th century mountain travels, the analysis focuses on the category of individual space perception. The author discusses various Romantic elements of the travelogues. The most typical travellers’ practices included experiencing the sublime of the mountain landscape, recalling the tragic history of Suli, reflecting upon the passage of time, expressing melancholy and awe, as well as observing the night scenery. The article closes with some remarks on the influence of the Romantic vision of Suli on Greek historiography.Artykuł powstał w ramach programu Międzynarodowe Projekty Doktoranckie Fundacji na rzecz Nauki Polskiej, współfinansowanego przez Unię Europejską w ramach Europejskiego Funduszu Rozwoju Regionalnego.Ewa Róża Janion – dr, hellenistka, kulturoznawczyni, absolwentka Międzynarodowych Studiów Doktoranckich na Wydziale „Artes Liberales” Uniwersytetu Warszawskiego. Jej rozprawa doktorska Imaging Suli. Interactions between Philhellenic Ideas and Greek Identity Discourse ukazała się w 2015 roku w wydawnictwie Peter Lang.Uniwersytet Warszawski26928
ANALISIS KANDUNGAN PROTEIN DAN LEMAK PADA KIMA RAKSASA(Tridacna gigas) DARI PERAIRAN PANTAI DESA SULI DAN DI INFORMASIKAN KEPADA MASYARAKAT MELALUI PENYULUHAN MENGGUNAKAN LEAFLET
No full textKima or giant clams (Giant Clams) are a type of bivalve that is often found in thewaters of shellfish ecosystems. Shellfish can be developed as a fishery resource with high nutritional value to meet people’s food needs. The main problem in this research is the protein and fat content of giant clams (Tridacna gigas) from the waters of Suli Village. The aim of this research is to determine the protein and fat content of giant clams (Tridacna gigas) from the waters of Suli Village. The method used in this research is descriptive to see the presence of protein and fat in Bivalves, giant clams (Tridacna gigas). Data from research on the analysis of protein content in giant clams (Tridacna gigas) resulted in a protein content of 11.0671 in the first repetition, 10.8958 in the second repetition, with an average prorein contente 0f 10.9814. meanwhile, the results of the analysis of the fat content of giant clams (Tridacna gigas) showed that the fat content was 0.7238 in the first repetition, 0.7005 in the second repetition, with an average fat content of 0.7121. using this research, the author hopes that this article will be useful for everyone who reads it and that the public will be able to find out the protein and fat content of the Giant kima (Tridacna gigas). And maintain theGiant Kima (Tridacna gigas) ecosystem found in the waters of Suli Village Beach
Mesh properties for rans simulations of airfoil-shaped profiles: A case study of rudder hydrodynamics
No full textA good mesh is a prerequisite for achieving reliable results from Computational Fluid Dynamics (CFD) calculations. Mesh properties include mesh types, computational domain sizes, and node distributions. However, in literature, we found no clear consensus about what these properties should be. In this article, we performed a case study on ship rudders to determine what the suitable mesh properties are for airfoil-shaped profiles. A classic NACA 0012 profile is chosen as an example, and commercial packages ANSYS ICEM are applied for meshing with an ANSYS Fluent solver. With a strategy in consideration of relationships among different mesh properties, a comprehensive parametric investigation is conducted to study the impacts of these properties on the accuracy of rudder hydrodynamic coefficients obtained by CFD methods. The step-by-step study outputs recommended Reynolds numbers, domain sizes, and near-and far-field node distributions for mesh types with distinct topology structures, i.e., C-mesh, O-mesh, H-mesh, and Hybrid-mesh. Specifically, the study shows that a critical Reynolds number is needed for the perspective of efficiency, while a domain extending 60 times of the chord length enables the boundary effects to be negligible. As for node distributions, the near-field nodes should be treated carefully, compared with those in the far-field. After that, corresponding mesh properties for different calculation objectives are illustrated in detail based on the characteristics of mesh types mentioned above. With the proposed strategy for mesh refinements, impacts of different mesh properties on rudder hydrodynamics are clarified and recommended settings are applicable for other airfoil-shaped profiles such as wind turbines and marine propellers.Ship Design, Production and Operation
Culture as currency : a career at Court
No full textThis paper discusses passages from the Kitab al-Awraq by Abu Bakr al-Suli (d. 335/946) in which the author describes his interaction with his patrons and employers, contrasting these accounts with the norms set out by various manuals for courtiers which were written in this period
A-posteriori error estimators and RFB
No full textWe derive a posteriori bounds for the residual-free bubble (RFB) method for the solution of convection-dominated diffusion equations. Both linear functional error control and energy norm error control are considered. The implementation of a reliable and efficient adaptive algorithm is discussed. Finally, we proposed an adaptive algorithm in which the local bubble stabilisation is automatically turned off ( derefinement) in large parts of the computational domain during the refinement process, without compromising the accuracy of the method.\ud
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The first author acknowledges the financial support of INdAM and EPSRC
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LAW AND LITERATURE ::a study based on traditional chinese drama.
No full textBased on the texts of traditional Chinese dramas such as The Orphan of Zhao, Liang Shangbo and Zhu Yingtai, The Injustice to Dou E, and The Fifteen Strings of Cash, the book aims to broaden the scope of law and literature in China. Adopting a comprehensive and interdisciplinary approach of legal theory, literature, sociology, economics, and political science, the author analyzes some theoretical issues that are of the law or relevant to law in these literary playscripts, which breaks the Chinese tradition of moral reading and integrates literary study or humanitarian studies into the study of social sciences. In addition, the book discusses the history, status quo, and prospects of law and literature research in China and reflects on its value and methodology. The book will appeal to scholars and postgraduate students of legal theory, Chinese literature, and legal history.Based on the texts of traditional Chinese dramas such as The Orphan of Zhao, Liang Shangbo and Zhu Yingtai, The Injustice to Dou E, and The Fifteen Strings of Cash, the book aims to broaden the scope of law and literature in China
Enhanced RFB method
No full textThe residual-free bubble method (RFB) is a parameter-free stable finite element method that has been applied successfully to solve a wide range of boundary-value problems presenting multiple-scale behavior. If some local features of the solution are known a-priori, the RFB finite element space approximation properties can be increased by enriching it on some specific edges of the partition (see[7]). Based on such idea, we define and analyse the enhanced residual-free bubbles method for the solution of convection-dominated convection-diffusion problems in 2-D. Our a-priori analysis enlightens the limitations of the RFB method and the superior global convergence properties of the new method. The theoretical results are supported by extensive numerical experimentation.\ud
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The first author acknowledges the financial support of INdAM and EPSR
