scholarly journals Practical Experience in Building an Agent System for Semantics-Based Provision and Selection of Grid Services

Author(s):  
Gustaf Nimar ◽  
Vladimir Vlassov ◽  
Konstantin Popov
1899 ◽  
Vol 45 (191) ◽  
pp. 713-724
Author(s):  
F. Ashby Elkins ◽  
Jas. Middlemass

We think it will be generally acknowledged that the problem which the treatment of noisy, destructive, and dirty patients sets to their medical officers is greatest as regards their management at night. It is then undoubtedly that noise, destructiveness, and dirty habits have the greatest chance of getting free play, and it is then that the efforts for reformation have to be greatest. If these efforts are successful considerably more than half the problem will have been solved. It is to this part of the question, viz. the supervision of such patients during the night, that we desire in this paper to direct attention. At the outset it may be stated that our proposals are not theoretical. They are the result of practical experience gained during the past four years in the Sunderland Asylum. The special arrangements we propose to describe were instituted by one of us at the opening of the institution four years ago. At first a few cases were dealt with tentatively, but, as the first results were so encouraging, the number of cases was gradually increased, until all the patients who were restless, noisy, destructive, or of dirty habits came without exception to be dealt with. The asylum, situated at Ryhope, is a small one, containing only 350 beds, and on this account, as well as because it was new, it was conveniently suited for such an experiment. It may be well before going further to describe the arrangements now in existence there. There are 175 beds for each sex, made up as follows:—45 single rooms, one fully padded, and 2 half-padded; 2 small dormitories of 7 each, 2 of 13 each, 2 of 19 each, and 2 of 26 each. In the last two there is a night attendant, and one also in one of the dormitories for 19, which is the hospital ward. There is, in addition, a head night attendant who visits the patients in these dormitories and also all the remaining patients every hour, or oftener when necessary. There are thus 4 of a night staff for 175 patients. Though this is probably a large proportion compared to most public asylums, it is not claimed as a new departure in asylum management, as we are aware that in a number of asylums the advantage of having a large night staff is fully realised and acted on. The essential feature of the arrangements at Ryhope, to which we wish to direct attention, is the selection of cases placed in dormitories under constant supervision. Of course, all epileptics and suicidal patients are placed there. But, in addition, all recent cases of whatever kind, all dirty and destructive cases, and those who sleep badly and are in consequence inclined to chatter or be noisy, are also placed under constant supervision. Looked at from the other side, all single rooms and dormitories not under constant supervision are reserved for quiet and well-behaved patients who do not require any special attention during the night. This plan has been found to work exceedingly well, and since it was organised we have never had occasion to think of adopting any other. Another testimony to its effectiveness is that those of the staff who have the actual supervision of the patients and have had experience in other asylums are unanimous in their opinion that the arrangement is a very decided improvement. This opinion, let it be observed, is not based on the ground that now their duties are lighter than they were, because, as a matter of fact, they are more onerous.


1950 ◽  
Vol 10 (01) ◽  
pp. 1-12
Author(s):  
N. Benz

Only a small proportion of examination candidates have practical experience of reversions and life interests, and the purpose of this paper is to indicate some of the practical points which arise in transacting this class of business; the selection of appropriate bases for mortality, interest, valuation of funds and Estate Duties do not fall within the scope of this paper. Reference to strictly legal aspects are no more than incidental.Since 1945 there has been, on the basis of new business figures, a marked revival in reversionary business defined as covering purchased reversions and life interests, and loans secured thereon. On balance-sheet values the reversionary business of British life offices in force at 31 December 1948 was rather more than £15m. There was approximately the same volume at 31 December 1943, but at 31 December 1938 there was about £2m. more in force. Over the 10-year period loans have decreased by about £3½m. to only little more than £5m., but purchases have increased by about £1½m. to more than £10m. These figures can give no more than an approximate picture of market value through the different methods of arriving at balance-sheet values, but they serve to show that reversions and life interests continue to form an important part of the assets of certain British life offices.


2012 ◽  
pp. 1332-1348
Author(s):  
Dimosthenis Kyriazis ◽  
Andreas Menychtas ◽  
Theodora Varvarigou

This chapter focuses on presenting and describing an approach that allows the mapping of workflow processes to Grid provided services by not only taking into account the quality of service (QoS) parameters of the Grid services but also the potential business relationships of the service providers that may affect the aforementioned QoS parameters. This approach is an integral part of the QoS provisioning, since this is the only way to estimate, calculate, and conclude to the mapping of workflows and the selection of the available service types and instances in order to deliver an overall quality of service across a federation of providers. The added value of this approach lays on the fact that business relationships of the service providers are also taken into account during the mapping process.


Author(s):  
Matthew Adigun ◽  
Johnson Iyilade ◽  
Klaas Kabini

The service-oriented computing paradigm is based on the assumption that existing services can be put together in order to obtain new composite services. This chapter focuses on how peer-to-peer architectures based on multi-agent systems can be used to build highly dynamic and reconfigurable infrastructure that support dynamic composition of grid services. The chapter starts by providing an overview of key technologies for SOC. It then introduces dynamic service composition and challenges of composing grid services. The authors further motivate for Multi-agent system approach in SOC and why it becomes important in service composition. They then present our research effort, AIDSEC, an agent-based infrastructure for dynamic service composition, describing its architecture, implementation and comparison with some related work in the literature. In addition, the chapter raises some emerging trends in SOC and the particular challenges they pose to service composition. They conclude by suggesting that a solution based on multi-agent system is required for composing services that possess capabilities of autonomy, reliability, flexibility, and robustness.


Author(s):  
Dimosthenis Kyriazis ◽  
Andreas Menychtas ◽  
Theodora Varvarigou

This chapter focuses on presenting and describing an approach that allows the mapping of workflow processes to Grid provided services by not only taking into account the quality of service (QoS) parameters of the Grid services but also the potential business relationships of the service providers that may affect the aforementioned QoS parameters. This approach is an integral part of the QoS provisioning, since this is the only way to estimate, calculate, and conclude to the mapping of workflows and the selection of the available service types and instances in order to deliver an overall quality of service across a federation of providers. The added value of this approach lays on the fact that business relationships of the service providers are also taken into account during the mapping process.


2020 ◽  
pp. 110-118
Author(s):  
L.V. Derbentseva

The purpose of the article is to present the scientific and methodological ideas of Professor L.V. Shamrey’s, ScD in Education. The article focuses on the issues of modern lessons of Literature; the issues, related to the general and philological culture of the teacher, their professional skills to plan and structure one’s activities, rethink the goals and objectives of teaching in accordance with modern requirements. The article includes information on the all-Russian conference “Literary work in the context of artistic culture” (Nizhny Novgorod), dedicated to the memory of L.V. Shamrey. The article includes a substantial review of her monograph “The role of image-associative thinking in the development of the school pupil reader”. Describing the scientific direction headed by L.V. Shamrey, the author dwells in detail on the difference between the lessons of a simulation type and traditional literature lessons. The difference entails imagery as a principle of structuring educational activities, increased emotiveness, careful selection of content, higher complexity of tasks and accuracy of wording. In the article special attention is paid to the staged structure and organization of the lessons of a simulation type including the “birth” of an idea expressed in a metaphorical form, concept, principles of content selection, and description of the course of the lesson. Theoretically based ideas are supported by some examples of lessons from the practical experience of L.V. Shamrey’s. By way of conclusion, the author deduces that the introduction of the lessons of a simulation type into the literature teaching process is not a rejection of the traditional classical lesson. It’s an enrichment of the teacher’s professional culture which has a huge impact on the development of literary education in school and a certain degree of students’ freedom of reflection over the read piece of art.


2021 ◽  
Vol 349 ◽  
pp. 04015
Author(s):  
Josef Kasl ◽  
Jan Lazar ◽  
Miroslava Matějová

Corrosion fatigue fractures initiating from corrosion pits are one of the most serious problem during service of rotating blades of the low-pressure parts of steam turbines. A methodology for fatigue failure prediction, originally based on the knowledge obtained by EPRI (Electric Power Research Institute), using corrosion pits parameters assessment and local stresses calculation was adapted to the conditions of ČEZ a.s. power stations. This contribution deals with the evaluation of the corrosion state of blades of three low pressure rotors after long service. Measurement was done in power stations equipped with turbines of power 200 MW and 110 MW respectively. Possibilities and uncertainties (influence of filling of pits with oxides, cyclic stress calculations, and the selection of the geometric factor Y) and their elimination are discussed.


2005 ◽  
Vol 13 (4) ◽  
pp. 299-316 ◽  
Author(s):  
Sergio Andreozzi ◽  
Danilo Montesi ◽  
Rocco Moretti

Grid systems enable the sharing of a large number of geographically-dispersed resources among different communities of users. They require a mapping functionality for the association of users requests expressed in terms of requirements and preferences to actual resources. This functionality should deal with a potentially high number of similar resources and with the diversity of the perceived satisfactions of users. We propose XMatch, a query language enabling the expression of the user request in terms of the expected satisfaction over XML-based representation of available resources. This language offers a compact way for users to express their preferences for Grid resources and enable the maximization of the global preference.


2019 ◽  
Vol 35 (2) ◽  
pp. 106-115 ◽  
Author(s):  
Sabine Vogler ◽  
Peter Schneider

AbstractObjectivesThere is no established methodology to assess the feasibility of medicine price data sources. Against this backdrop, a framework to guide the selection of most appropriate price data sources for pharmacoeconomic research has been developed.MethodsA targeted literature review was carried out. Dimensions discussed in literature as relevant for medicine price comparisons and practical experience of the authors in medicine price studies informed the conceptional work of the framework development. A draft version of the framework was reviewed by peer pricing experts. The feasibility of the framework was tested in case studies.ResultsAccording to the developed framework (called Re-ADAPT), a medicine price data source should meet the following criteria: reliability and sustainability; accessibility at a cost that users can afford; provision of medicine price information at the date(s) required; information for the defined geographic area, or at least in a representative way; coverage of the pharmaceuticals and at the price type(s) required. Easy handling and provision of additional information were defined as supportive assets of candidate data sources (secondary criteria). The case studies confirmed the feasibility of the Re-ADAPT framework. In some cases, however, it can be difficult to disentangle assessment criteria (particularly geographic area, scope of pharmaceuticals and price types) for separate consideration, given their interlinkage.ConclusionsWhile selection of the most appropriate data sources will remain a challenge, the Re-ADAPT framework aims to provide practical guidance and thus contribute to a more careful, balanced, and evidence-based selection of data sources for medicine price studies.


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