Search results for "sigma"
showing 10 items of 346 documents
Top-k String Similarity Joins
2020
Top-k joins have been extensively studied in relational databases as ranking operations when every object has, among others, at least one ranking attribute. However, the focus has mostly been the case when the join attributes are of primitive data types (e.g., numerical values) and the join predicate is equality. In this work, we consider string objects assigned such ranking attributes or simply scores. Given two collection of string objects and a string similarity measure (e.g., the Edit distance), we introduce the top-k string similarity join () which returns k sufficiently similar pairs of objects with respect to a similarity threshold ϵ, which have the highest combined score computed by…
Spatial joins
2019
The spatial join is a popular operation in spatial database systems and its evaluation is a well-studied problem. This paper reviews research and recent trends on spatial join evaluation. The complexity of different data types, the consideration of different join predicates, the use of modern commodity hardware, and support for parallel processing open the road to a number of interesting directions for future research, some of which we outline in the paper.
First Observation of Top Quark Production in the Forward Region
2015
Top quark production in the forward region in proton-proton collisions is observed for the first time. The W + b final state with W → μν is reconstructed using muons with a transverse momentum, p[subscript T], larger than 25 GeV in the pseudorapidity range 2.0 20 GeV. The results are based on data corresponding to integrated luminosities of 1.0 and 2.0 fb[superscript -1] collected at center-of-mass energies of 7 and 8 TeV by LHCb. The inclusive top quark production cross sections in the fiducial region are σ(top)[7 TeV] = 239 ± 53(stat) ± 33(syst) ± 24(theory) fb, σ(top)[8 TeV] = 289 ± 43(stat) ± 40(syst) ± 29(theory) fb.These results, along with the observed differential yields and c…
Application of Lean Six Sigma methodology to a school based immunization project in Italy
2015
Mejora de la calidad y seguridad del proceso farmacoterapéutico del paciente onco-hematológico atendido en el hospital de día, aplicando la metodolog…
2018
El objetivo principal de la presente Tesis Doctoral fue mejorar la calidad y la seguridad del proceso farmacoterapéutico del paciente onco-hematológico atendido en el hospital de día aplicando la metodología Lean Seis Sigma, para disminuir los tiempos de demora del proceso farmacoterapéutico, reducir los errores de medicación, aumentar la satisfacción de los pacientes y reducir los costes del servicio prestado. Se realizó un estudio analítico, longitudinal prospectivo de 4 años de duración, basado en métodos de observación directa y estudios experimentales. Se incluyó el proceso farmacoterapéutico antineoplásico integral con quimioterapia intravenosa del paciente onco-hematológico atendido …
Starpfunkcionālu komandu veidošana biznesa organizācijās
2019
Šajā pētījumā galvenā uzmanība pievērsta savstarpēji funkcionējošu komandu izveidošanai mazos uzņēmumos un to analīzei, izmantojot izmaksu un ieguvumu analīzi. Turklāt pētījums ir arī vērsts uz problēmu noteikšanu sākotnējā posmā. Caur pētījumiem un precīzu datu analīzi bija noskaidrota nepieciešamība starpfunkcionālu komanu veidošanai. Pamatojoties uz pierādījumiem, kuri ir sniegti pēc visu pētījumu procedūru pabeigšanas, uzņēmums var pieņemt lēmumu. Šī pētījuma rezultāti atklāj vairākus faktorus, kas būtiski ietekmēja darbiniekus, kuri strādā dažādās struktūrvienībās: spēju efektīvi sazināties un dibināt ciešas attiecības ar citiem, lai sasniegtu kopējo mērķi. Pirmajā nodaļā ir aplūkota s…
Lopputuotteen laadunvalvonnan parantaminen tietojärjestelmien avulla
2009
Tekijä: Antti Hyvönen Yhteystiedot: anerhyvo@jyu.fi Työn nimi: Lopputuotteen laadunvalvonnan parantaminen tietojärjestelmien avulla Title in English: Enhancing quality management through IT Työ: Tietojärjestelmätiede kandidaatintutkielma Sivumäärä: 34 Tiivistelmä: Yritysten valmistamilla tuotteilla on oma elinkaarensa. Tällaisille tuotteille laadunvalvonta on keskeistä kaikissa tuotteen elinkaaren vaiheissa. Laatua parannettaessa informaatio näyttelee tärkeää roolia tässä prosessissa. Tälläista tietoa voidaan kerätä tuotannon eri vaiheista, aina asiakkaalta tulevaan palautteeseen saakka. Itse tiedon keräyksessä ja analysoinnissa tietotekniikka voi olla suureksi eduksi. Tällä tutkielmalla on…
A simple algorithm for finding short sigma-definite representatives
2010
We describe a new algorithm which for each braid returns a quasi-geodesic sigma-definite word representative, defined as a braid word in which the generator sigma_i with maximal index i appears either only positively or only negatively.
Étude des interconnexions dans les réseaux de régulation de Listeria monocytogenes en réponse aux conditions de l'environnement
2019
The facultative intracellular pathogen Listeria monocytogenes is a highly adaptable organism widely distributed in the environment. The ingestion of food contaminated with L. monocytogenes by at-risk individuals can ultimately lead to listeriosis, one of the leading causes of food-borne fatalities in developed countries. Regulatory networks are crucial for the adaptation and survival of this pathogen. The accessory gene regulator (Agr) system has been shown to be involved in virulence, biofilm formation, and survival of L. monocytogenes, affecting the transcription of over 700 genes. The alternative sigma factor Sigma B (σB) controls the general stress response in L. monocytogenes, regulati…
Mesure de l’efficacité de la lutte contre l’ambroisie : étude de faisabilité
2013
Common ragweed (Ambrosia artemisiifolia L.) is known for its high allergenic pollens and by the difficulty to control this invasive plant which make it a problem for public health and is a harmfulness in rural areas. This first work aims to make a feasibility study to verify the proper functioning of selected traps and the correct implementation of specific procedures. It was decided to use passive traps SIGMA2 (SIGMA2 Like Trap ou SLT). Two geographical areas were selected, each with 4 traps: an infested area in Isère and a slightly infested area in Côte d'Or. SLT traps used can well collect pollen from local areas, the collected quantities vary in a corresponding manner according to the d…