Search results for "Minimum"
showing 10 items of 327 documents
A non-cooperative approach to the folk rule in minimum cost spanning tree problems
2023
This paper deals with the problem of finding a way to distribute the cost of a minimum cost spanning tree problem between the players. A rule that assigns a payoff to each player provides this distribution. An optimistic point of view is considered to devise a cooperative game. Following this optimistic approach, a sequential game provides this construction to define the action sets of the players. The main result states the existence of a unique cost allocation in subgame perfect equilibria. This cost allocation matches the one suggested by the folk rule. The authors thank the support of the Spanish Ministry of Science, Innovation and Universities, the Spanish Ministry of Economy and Compe…
A new approach for assessing minimum flow in ephemeral streams
2009
The aim of this paper is to propose a new methodological approach, appropriate for low-yielding catchments, by calculating the ecological minimum river flow starting from the river water quality based on biological indicators and physical–chemical characteristics as reported in the Italian Water Law no. 152/06 and in the UE 2000/60 Directive (WFD: Water Framework Directive). Actually, protecting and restoring river flow regimes and hence the ecosystems they support by providing environmental flows, has become a major aspect of river basin management. In detail, pollutant concentrations downstream and fluvial structure cross-sections have been evaluated, starting from discharges released dow…
Minimum detection limits and applications of proton and helium induced X-ray emission using transition-edge sensor array
2017
Abstract We have determined minimum detection limits, MDLs, for elements 14 ⩽ Z ⩽ 86 using a transition-edge sensor array, TES array, and as a comparison using an Amptek X-123SDD silicon drift detector, SDD. This was done using a 3 MeV proton beam and a 5.1 MeV helium beam. MDLs were determined for a thin film sample on top of C substrate, and for a bulk sample containing mostly Al. Due to the higher peak-to-background ratio, lower detection limits were obtainable using the TES array for most of the elements. However, for elements 30 ⩽ Z ⩽ 45 the performance of the TES array was not as good as the SDD performance. This is due to the limitations of the TES used at energies >10 keV. The great…
Synthesis, characterization and antimicrobial activity of palladium(II) complexes with some alkyl derivates of thiosalicylic acids: Crystal structure…
2012
Abstract S-Alkyl (R = benzyl, methyl, ethyl, propyl and butyl) derivatives of thiosalicylic acid and the corresponding palladium(II) complexes were prepared and their structures were proposed on the basis of infrared, 1H and 13C NMR spectroscopy. The cis geometrical configurations of the isolated complexes were proposed on the basis of an X-ray structural study of the bis(S-benzyl-thiosalicylate)–palladium(II), [Pd(S-bz-thiosal)2] complex. Antimicrobial activity of the tested compounds was evaluated by determining the minimum inhibitory concentration (MIC) and minimum microbicidal concentration (MMC) in relation to 26 species of microorganisms. The tested ligands, with a few exceptions, sho…
Kvantu vaicājumu sarežģītība dinamiskās programmēšanas problēmām
2022
Dinamiskā programmēšana (DP) ir plaši pētīta no klasiskās skaitļošanas puses, un jauni rezultāti tiek atrasti katru gadu. Taču no kvantu skaitļošanas puses tā ir pētīta daudz mazāk. Tāpēc tika izvēlētas un pētītas vairākas plaši pazīstamas 1-dimensiju DP problēmas, izmantojot kvantu vaicājumu modeli. Darbā tika aplūkotas mazākā svara apakš-sekvences (LWS) problēmas, kā, piemēram, kastu komplektēšanas (NestedBoxes) problēma, kā arī dažas saistītās problēmas. Darba mērķis bija atrast aplūkotajām LWS problēmām augšējo novērtējumu, kas labāks par triviālo O ̃(n^1.5 ) vai labu apakšējo novērtējumu. Izdevās atrast vairākus mazākus rezultātus NestedBoxes problēmai – kvantu apakšējo novērtējumu Ω(n…
Lineāras mērķa funkcijas optimizācija pie pseidolineāriem nosacījumiem
2015
Darbā aprakstītas vairākas optimizācijas problēmas ar dažādām pseidolineārām nosacījumu sistēmām un to pētīšanas vēsture. Pamatoti summas-minimuma nosacījumu sistēmas minimālā atrisinājuma eksistences un unitātes nosacījumi. Definēti pseidominimāli indeksi un aprakstīts to aprēķināšanas algoritms. Kā arī aprakstīts algoritms lineāras funkcijas optimizēšanai pie summas-minimuma nosacījumiem, izmantojot pseidominimālos indeksus. Abi algoritmi ilustrēti ar piemēriem.
Lineārās programmēšanas pieeja pseidolineāru optimizācijas uzdevumu risināšanai
2017
Darbs ir veltīts optimizācijas problēmām ar dažādām pseidolineārām nosacījumu sistēmām un to risināšanas algoritmiem. Ir aprakstīts, kā atrast lineāras nosacījumu sistēmas, kas ir ekvivalentas dotām pseidolineārām nosacījumu sistēmām. Ir atrastas lineāras nosacījumu sistēmas, kuras ir ekvivalentas maksimuma-minimuma, maksimuma-reizinājuma un maksimuma-t-normas nosacījumu sistēmām ar dažām t-normām. Piedāvātā metode ir ilustrēta ar piemēriem.
A Review of Occlusion as a Tool to Assess Attentional Demand in Driving
2021
Objective The aim of this review is to identify how visual occlusion contributes to our understanding of attentional demand and spare visual capacity in driving and the strengths and limitations of the method. Background The occlusion technique was developed by John W. Senders to evaluate the attentional demand of driving. Despite its utility, it has been used infrequently in driver attention/inattention research. Method Visual occlusion studies in driving published between 1967 and 2020 were reviewed. The focus was on original studies in which the forward visual field was intermittently occluded while the participant was driving. Results Occlusion studies have shown that attentional demand…
The construction of a subset of ICNP® for patients with dementia: a Delphi consensus and a group interview study
2015
Background The International Classification for Nursing Practice (ICNP®) 2013 includes over 4000 concepts for global nursing diagnoses, outcomes and interventions and is a large and complex set of standardised nursing concepts and expressions. Nurses may use subsets from the ICNP as concepts and expressions for research, education and clinical practice. The objective of this study was to identify and validate concepts for an ICNP subset to guide observations and documentation of nursing care for patients with dementia. Method The process model for developing ICNP subsets was followed, according to the guidelines adopted by the International Council of Nursing (ICN). To identify relevant and…