Search results for " SEARCH"
showing 10 items of 654 documents
Search for anisotropic gravitational-wave backgrounds using data from Advanced LIGO and Advanced Virgo's first three observing runs
2021
We report results from searches for anisotropic stochastic gravitational-wave backgrounds using data from the first three observing runs of the Advanced LIGO and Advanced Virgo detectors. For the first time, we include Virgo data in our analysis and run our search with a new efficient pipeline called {\tt PyStoch} on data folded over one sidereal day. We use gravitational-wave radiometry (broadband and narrow band) to produce sky maps of stochastic gravitational-wave backgrounds and to search for gravitational waves from point sources. A spherical harmonic decomposition method is employed to look for gravitational-wave emission from spatially-extended sources. Neither technique found eviden…
Analyse multirésolution pour la recherche et l'indexation d'images par le contenu dans les bases de données images - Application à la base d'images p…
2005
Recent content-based image retrieval systems offer an interactive visual browsing of images databases. These methods perform a classification of images (offline) into a search tree for users browsing (online). This approach shows three main problems:1) The size of decriptor vector (n>100) makes distance computing sensitive to dimensionality curse,2) Having many different kinds of attributes into descriptor vector does not help classification,3) In general, classification does not take in consideration users' search context. In this work, we propose a method based on building hierarchical signatures having small increasing sizes, this allows to take users' search context into consideration. …
Algorithmic issues in computational intelligence optimization: from design to implementation, from implementation to design
2016
The vertiginous technological growth of the last decades has generated a variety of powerful and complex systems. By embedding within modern hardware devices sophisticated software, they allow the solution of complicated tasks. As side effect, the availability of these heterogeneous technologies results into new difficult optimization problems to be faced by researchers in the field. In order to overcome the most common algorithmic issues, occurring in such a variety of possible scenarios, this research has gone through cherry-picked case-studies. A first research study moved from implementation to design considerations. Implementation limitations, such as memory constraints and real-time r…
Effects of menu structure and touch screen scrolling style on the variability of glance durations during in-vehicle visual search tasks.
2011
The effects of alternative navigation device display features on drivers' visual sampling efficiency while searching forpoints of interest were studied in two driving simulation experiments with 40 participants. Given that the number of display items was sufficient, display features that facilitate resumption of visual search following interruptions were expected to lead to more consistent in-vehicle glance durations. As predicted, compared with a grid-style menu, searching information in a list-style menu while driving led to smaller variance in durations of in-vehicle glances, in particular with nine item displays. Kinetic touch screen scrolling induced a greater number of very short in-v…
Erikseen vai yhdessä? Tietopalvelujen vakiintuminen Jyväskylän yliopiston kirjaston ytimeen
2012
Informaatiolukutaito on keskeinen akateemisen asiantuntijuuden ulottuvuus ja työelämätaito. Mirja Laitinen kertaa artikkelissaan Jyväskylän yliopiston kirjaston tietopalvelujen kehitystä ja sulautumista osaksi kirjaston keskeistä palvelutarjontaa, sekä tiedonhankinnan opetuksen ja ohjauksen nousua kirjaston tietopalvelun keskeiseksi tehtäväksi. Artikkelissa myös tarkastellaan kirjaston tietopalvelun ammattilaisten tehtäviä digitaalisessa maailmassa, jossa tiedonhankinta ja -hallinta ovat muuttuneet ratkaisevasti. nonPeerReviewed
The need for information in purchase situation and the information behavior in front of the shelf : use and effects of electronic interactive communi…
1999
The classic approach of buying behavior supposes that the consumption value derives from the evaluation of the technical, functionnal and symbolic features of the product. But, most of recents works use an experiential approach, for which the anticiped situation of consumption or use and the self concept are the essential elements of the consumption value. This thesis, devoted to information behavior in buying situation, attemps to conciliate these two paradigms until here opposite. The first part of this search investigates the concept of need for information. Its results, according to us, the activation ot two schemes, the first concerning the product acquisition, the second relative to t…
Search, Nash Bargaining and Rule of Thumb Consumers
2009
This paper analyses the effects of introducing typical Keynesian features, namely rule-of-thumb consumers and consumption habits, into a standard labour market search model. It is a well-known fact that labour market matching with Nash-wage bargaining improves the ability of the standard real business cycle model to replicate some of the cyclical properties featuring the labour market. However, when habits and rule-of-thumb consumers are taken into account, the labour market search model gains extra power to reproduce some of the stylised facts characterising the US labour market, as well as other business cycle facts concerning aggregate consumption and investment behaviour.
The workers' value of the remaining employment contract duration
2005
We introduce and apply a method for estimating workers' marginal willingness to pay for job attributes employing data on job search activity. Worker's willingness to pay for the remaining duration of the employment contract is derived. We provide evidence that workers attach substantial value to the remaining contract duration. A temporary worker with a remaining contract of six months is willing to pay about 10% of the monthly wage to increase the contract by one month.This discussion paper has resulted in a publication in Economica, 2008, 75(297), 116-39.
Regional differences between job seekers: case of Latvia
2021
Differences in labour market have always been on great importance in Latvia, however special concern is about regions of Latvia where finding a new job sometimes could be very challenging process, because these regions are developing unevenly, job vacancies are limited, wages are lower and there is a lack of high qualified specialists in labour market. Purpose of the study is to analyse regional differences between job seekers in regions in Latvia. The tasks of the study: 1) To analyse theoretical background of regional differences of job seekers and employment in context of urban and rural areas; 2) To analyse main challenges and problems of regional differences between job seekers in regi…
On the relationship between occlusion times and in-car glance durations in simulated driving
2023
Drivers have spare visual capacity in driving, and often this capacity is used for engaging in secondary in-car tasks. Previous research has suggested that the spare visual capacity could be estimated with the occlusion method. However, the relationship between drivers’ occlusion times and in-car glance duration preferences has not been sufficiently investigated for granting occlusion times the role of an estimate of spare visual capacity. We conducted a driving simulator experiment (N = 30) and investigated if there is an association between drivers’ occlusion times and in-car glance durations in a given driving scenario. Furthermore, we explored which factors and variables could explain t…