Search results for "complexity"
showing 10 items of 1094 documents
On differences and similarities in the analysis of Lorenz, Chen, and Lu systems
2015
Currently it is being actively discussed the question of the equivalence of various Lorenz-like systems and the possibility of universal consideration of their behavior (Algaba et al., 2013a,b, 2014b,c; Chen, 2013; Chen and Yang, 2013; Leonov, 2013a), in view of the possibility of reduction of such systems to the same form with the help of various transformations. In the present paper the differences and similarities in the analysis of the Lorenz, the Chen and the Lu systems are discussed. It is shown that the Chen and the Lu systems stimulate the development of new methods for the analysis of chaotic systems. Open problems are discussed.
Perceptions and experiences of a sample of nontraditional students in transition from Higher Education to the Labour Market in Western Sicily.
2018
In recent years a long economic crisis has affected the occupational opportunities of young people. In Italy, unemployment among 20-34 year olds, reached percentage values as high as 40%. The purpose of this work was to investigate perceptions and expectations of a group of nontraditional students about to graduate in Western Sicily. A group of 200 nontraditional students (112F/88M) attending final year classes in four randomly selected university courses were interviewed using a 25 item questionnaire. The students selected were concerned about the post-graduation period, and all complained about the scarcity of employment opportunities in the south of Italy. Indeed, a distance remains betw…
Ambiguity and complementation in recognizable two-dimensional languages
2008
The theory of one-dimensional (word) languages is well founded and investigated since fifties. From several years, the increasing interest for pattern recognition and image processing motivated the research on two-dimensional or picture languages, and nowadays this is a research field of great interest. A first attempt to formalize the concept of finite state recognizability for two-dimensional languages can be attributed to Blum and Hewitt ([7]) who started in 1967 the study of finite state devices that can define two-dimensional languages, with the aim to finding a counterpart of what regular languages are in one dimension. Since then, many approaches have been presented in the literature…
A two-armed bandit collective for hierarchical examplar based mining of frequent itemsets with applications to intrusion detection
2014
Published version of a chapter in the book: Transactions on Computational Collective Intelligence XIV. Also available from the publisher at: http://dx.doi.org/10.1007/978-3-662-44509-9_1 In this paper we address the above problem by posing frequent item-set mining as a collection of interrelated two-armed bandit problems. We seek to find itemsets that frequently appear as subsets in a stream of itemsets, with the frequency being constrained to support granularity requirements. Starting from a randomly or manually selected examplar itemset, a collective of Tsetlin automata based two-armed bandit players - one automaton for each item in the examplar - learns which items should be included in …
Complement component C1 and the collectins – first-line defense molecules in innate and acquired immunity
2002
Abstract The 5th International Workshop on C1 and the Collectins was held in Lufthansa-Bildungszentrum, Seeheim, Germany from 26–28 October 2001.
Decidability Frontier for Fragments of First-Order Logic with Transitivity
2018
Several decidable fragments of first-order logic have been identified in the past as a generalisation of the standard translation of modal logic. These include: the fluted fragment, the two-variable frag- ment, the guarded fragment and the unary negation fragment; some of them have been recently generalised or combined to yield even more expressive decidable logics (guarded negation fragment or uniform one- dimensional fragment). None of the fragments allows one to express tran- sitivity of a binary relation or related properties like being an equivalence, a linear or a partial order, that naturally appear in specifications or in verification. The question therefore arises what is the impac…
Integrative strategy formation process and the management of complex work - a microorganizational analisys
2010
The goal of this study is to analyse how the strategy formation process takes place; studying the relevance of the integrative perspective and the use of the variables rationality, involvement and vision; Verifying the relationship between an integrative strategy formation process and the management of work and the consequences of this relationship in terms of performance, identifying the causes for a better fit; Also, verify the propositions that have been formulated and looking for new variables that could affect the relationship between strategic process and work management. It has been adopted a qualitative methodology through a study case. After the case analysis it has been identified…
Determinants of employee well-being in project work
2021
Projects are supposed to foster innovation and flexibility and to create better conditions for learning. Accordingly, project work usually has a positive connotation for both, firms and the individ...
Search forBs0→μ+μ−andB0→μ+μ−Decays with CDF II
2011
A search has been performed for B{sub s}{sup 0} {yields} {mu}{sup +}{mu}{sup -} and B{sup 0} {yields} {mu}{sup +}{mu}{sup -} decays using 7 fb{sup -1} of integrated luminosity collected by the CDF II detector at the Fermilab Tevatron collider. The observed number of B{sup 0} candidates is consistent with background-only expectations and yields an upper limit on the branching fraction of {Beta}(B{sup 0} {yields} {mu}{sup +}{mu}{sup -}) < 6.0 x 10{sup -9} at 95% confidence level. We observe an excess of B{sub s}{sup 0} candidates. The probability that the background processes alone could produce such an excess or larger is 0.27%. The probability that the combination of background and the expe…
Implementation of multicommutation principle with flow-through multioptosensors
2005
Abstract For the first time, the combination of multicommutation concept with flow-through multioptosensors is exploited and a biparameter multicommutated UV sensor is developed. A very easy-operated and automated sensing device is proposed here and demonstrated to be useful in the routine analysis by applying it to the determination of two widely used pharmaceuticals chosen as model analytes: salicylamide and caffeine. The particulated solid phase used performs two functions: (a) states selectivity conditions by itself in the flow cell and (b) provides appropriate separation of the analytes in the on-line precolumn, thus making possible the sequential arrival of the analytes to the detecti…