995 research outputs found
R&D managers’ adaptation of firms’ HRM practices.
No full textThe heads of R&D departments are those most responsible for the adaptation of firms’ human resource management (HRM) practices to the idiosyncrasies of their departments. From their description, this paper analyzes the HRM practices in R&D departments and the adaptation achieved in four different firms. The data suggest that the main adaptations are produced primarily in recruiting and organizing the work of R&D personnel. In contrast to suggestions in the specialized literature, less adaptation is found in other HRM practices analyzed (managerial support and degree of delegation, compensation and career plans). Psychological theories of procedural justice and social comparison can improve our understanding of such results. The organizational structure affects the reference group for such comparisons and, consequently, the R&D managers’ capacity to adapt such practices. Based on these arguments, the delegation of HRM practices to R&D departments will enhance the degree of adaptation of such policiesR&D; Research and development; Human resource management;
Pavillon Jeanne-Mance de l'Hôtel-Dieu, rue Saint-Urbain, Montréal, 1950
No full textArchitectes: A. D. Gascon et Louis Parant; Architectes chargés de construire une passerelle reliant les pavillons Jeanne-Mance et De Bullion: Gilles Duplessis, Henri P. Labelle et Gérard Derome; Date de construction du Pavillon Jeanne-Mance: 1950; Dates de construction de la passerelle entre les pavillons Jeanne-Mance et De Bullion: 1970-1971; Photographie: Pierre-Richard Bisson, 1979.07.19À gauche, au premier plan: Passerelle reliant ce pavillon au pavillon De Bullio
The Catechol-O-Methyltransferase Genotype, Frailty and Gait speed: The Cardiovascular Health Study
No full textObjective: To examine whether the association between dopamine-related genotype and gait speed differs according to frailty status or race.
Design: Cross-sectional population-based study (Cardiovascular Health Study)
Setting: Multi-center study, 4 US sites.
Participants: Volunteer community-dwelling adults aged 65 and older, without evidence of Parkinson’s Disease (N= 3,744, 71 years, 82% white, 39% male).
Measurements: Gait speed (usual pace, m/sec), physical frailty (Fried definition), and genetic polymorphism of Catechol-O-methyltransferase (COMT, rs4680), an enzyme regulating tonic brain dopamine levels, were assessed. Interaction of COMT by frailty and by race predicting gait speed were tested, and, if significant, analyses were stratified. Multivariable regression models of COMT predicting gait speed were adjusted for demographics and locomotor risk factors. Sensitivity analyses were repeated stratified by clinical cut-offs of gait speed (0.6 and 1.0m/sec) instead of frailty status.
Results: Compared to Met/Met (higher dopaminergic signaling), the Val/Val group (lower dopaminergic signaling) walked marginally more slowly in the full cohort (0.87 vs 0.89 m/sec, p=0.2). The interaction of COMT by frailty and COMT by race predicting gait speed were p=0.02 and p=0.01, respectively. Gait speed differences by genotype were significant for frail (n=220, 0.55 vs 0.63 m/sec, p=0.03), but not for pre-frail (n=1691, 0.81 vs 0.81 m/sec, p=0.9), or non-frail (n=1833, 0.98 vs 0.97 m/sec, p=0.7); results were similar in fully adjusted models. Among frail, associations were similar for whites and blacks, but statistically significant for whites only. Associations stratified by clinical cut-offs of gait speed were not significant.
Conclusion: The association of dopamine-related genotype with gait speed is stronger among adults with frailty compared to those without. The potential effects of dopaminergic signaling on preserving physical function in frail adults should be further examined. This is significant to public health as it could improve quality of life of older adults and decrease adverse health outcomes
Enquête sur les connaissances et les comportements à l'égard de la nutrition et de l'activité physique chez les enseignants du secondaire deuxième cycle du Conseil scolaire des Frontières (District 3)
No full textL'alimentation saine et la pratique reguliere d'activite physique prennent de plus en plus d'envergure. La population recherche le mieux-etre et estime que ces deux composantes sont d'excellentes sources pour ameliorer leur sante.
Le but de cette recherche est de se familiariser avec les connaissances et les comportements des enseignants du secondaire deuxieme cycle du Conseil scolaire des Frontieres (District 3) a l'egard de la nutrition et de l'activite physique. Un questionnaire fut administre aux enseignants du secondaire des ecoles Polyvalente Thomas-Albert, Cite des Jeunes, Grande-Riviere et Cormier.
Un total de cent un questionnaires furent dument remplis. Les donnees ont fait l'objet d'analyses descriptives. Les resultats de ces analyses ont notamment demontre que les repondants ont un niveau de connaissances assez bien a l'egard de la nutrition et de l'activite physique. Cependant, leurs apports nutritionnels, ainsi que leur pratique d'activite physique, sont mediocres comparativement aux recommandations etablies.statement of responsibility: Jeanne-Mance Gauvin.thesis: Thèse (M.A. Éducation: Psychologie éducationnelle) -- Faculté des sciences de l'éducation, Université de Moncton, 1997.bibliography: Bibliogr.additional physical form: Également disponible sur microfiches et en version électronique
Control and Filtering for Discrete Linear Repetitive Processes with H infty and ell 2--ell infty Performance
No full textRepetitive processes are characterized by a series of sweeps, termed passes, through a set of dynamics defined over a finite duration known as the pass length. On each pass an output, termed the pass profile, is produced which acts as a forcing function on, and hence contributes to, the dynamics of the next pass profile. This can lead to oscillations which increase in amplitude in the pass to pass direction and cannot be controlled by standard control laws. Here we give new results on the design of physically based control laws for the sub-class of so-called discrete linear repetitive processes which arise in applications areas such as iterative learning control. The main contribution is to show how control law design can be undertaken within the framework of a general robust filtering problem with guaranteed levels of performance. In particular, we develop algorithms for the design of an H? and dynamic output feedback controller and filter which guarantees that the resulting controlled (filtering error) process, respectively, is stable along the pass and has prescribed disturbance attenuation performance as measured by and – norms
Impact of Load Based NIC-Bonding Scheduling on Out-of-order delivered TCP packets
No full textThe highest NIC bonding performance is achieved by the round-robin scheduling mode. However, we found that the performance was much lower than the theoretical limit due to out-of-order TCP packet delivery. So our work proposes a load-balanced NIC bonding scheduling approach as a significant improvement over the current state-of-the-art. We pro- pose that the outgoing packets should be queued on interfaces with the least amount of packets waiting to be sent. This allows the load to be well balanced over all interfaces thereby reducing the probability of packets arriving out-of-order at their destination. This work presents an analysis of all currently available NIC bonding modes in terms of perfor- mance. A new bonding simulation framework was developed to facilitate the development of alternate scheduling algorithms and compare their performance. This helped us analyze and propose load-based scheduling as a better alternative to the most popularly used round-robin scheduling mode
Task Switching and Single vs. Multiple Alarms for Supervisory Control of Multiple Robots
No full textForaging tasks, such as search and rescue or reconnaissance, in which UVs are either relatively sparse and unlikely to interfere with one another or employ automated path planning, form a broad class of applications in which multiple robots can be controlled sequen-tially in a round-robin fashion. Such human-robot systems can be described as a queuing sys-tem in which the human acts as a server while robots presenting requests for service are the jobs. The possibility of improving system performance through well-known scheduling tech-niques is an immediate consequence. Unfortunately, real human-multirobot systems are more complex often requiring operator monitoring and other ancillary tasks. Improving perfor-mance through scheduling (jobs) under these conditions requires minimizing the effort ex-pended monitoring and directing the operator’s attention to the robot offering the most gain. Two experiments investigating scheduling interventions are described. The first compared a system in which all anomalous robots were alarmed (Open-queue), one in which alarms were presented singly in the order in which they arrived (FIFO) and a Control condition without alarms. The second experiment employed failures of varying difficulty supporting an optimal shortest job first (SJF) policy. SJF, FIFO, and Open-queue conditions were compared. In both experiments performance in directed attention conditions was poorer than predicted. A possi-ble explanation based on effects of volition in task switching is propose
Single-User Performance of Uplink DS-CDMA using Relay-Assisted Diversity
No full textIn a wireless system with distributed mobile users, several mobile users may cooperate with each other in order to achieve the transmit diversity. In this contribution we investigate the single-user performance of an uplink direct-sequence code-division multiple-access (DS-CDMA) scheme, where one user is assisted by several other users (relays) so as to achieve the relay-assisted diversity. Specifically, the performance of the relay-assisted DS-CDMA is investigated, when communications from the transmitter to the relays and that from the relays to the base-station (BS) receiver may experience different fading. In our study two types of detection schemes are invoked. The first detection scheme is a maximal ratio combining (MRC) assisted single-user detection (SUD) scheme, which maximizes the output signal-to-noise ratio (SNR) without taking the interference among the relays into account. By contrast, the second, detection scheme maximizes the output signal-to-interference-plus-noise ratio (MSINR), which is a multiuser detection (MUD) scheme that is capable of suppressing the interference among the relays. Our study and results show that, in a relay-assisted DS-CDMA without using orthogonal spreading codes, the relay-assisted diversity may only be achievable after suppressing the inter-relay interference
Analiza oportunitetnih troškova neiskorištenog radnog vremena
No full textThe idea for this bachelor thesis was born out of the author's observations about his daily schedule
and time management problems, during his second year of the International Business graduate
studies program. The author thought it would be beneficial to research this topic by conducting a
survey among students and young adults, with the goal of better understanding the time
management decisions of this demographic. In particular, three hypotheses were tested pertaining
to the relationship between leisure time and hourly wages, differences in attitudes between
genders, and correlation between daily schedules and time substitution choices. This will be done
by, first, reviewing all the statistical methods that will be utilized, then examining all the research
similar that was previously conducted, creating and distributing a questionnaire created by the
author, and finally analyzing the data gathered via said questionnaire using various statistical
methods
Ivan Kukuljević in Dalmatia in 1854 and 1856: mediaeval monuments as a footing of Croatian national identity
No full textIvan Kukuljević Sakcinski (1816. – 1889.) Dalmaciju će posjetiti u dva navrata, sredinom šestog desetljeća 19. stoljeća, 1854. i 1856. godine. Tijekom ta dva studijska boravka izgradit će sliku njezina kulturno-povijesnog nasljeđa koja će predstavljati značajnu promjenu u dotadašnjem historiografskom i antikvarnom interesu za dalmatinsku prošlost i njezine spomenike. Kukuljevićevo tendenciozno protežiranje srednjovjekovlja kao povijesne baštine od nacionalnog prioriteta suprotstavlja se zadugo dominantnoj predodžbi kulturno-povijesnog identiteta Dalmacije utemeljenog na kultu antičkoga naslijeđa. Ta bitna promjena u stavu prema dalmatinskoj prošlosti i njezinim prežitcima u ovome se tekstu interpretira i postavlja u povijesni kontekst, naglašavajući njezinu izravnu motiviranost težnjom za uključivanjem Dalmacije u proces hrvatske nacionalne integracije.In this article, the author analyses and interprets the image of the cultural and the historical heritage of Dalmatia that Ivan Kukuljević Sakcinski (1816–1889) created during his two visits to this region in mid sixth decade of the 19th century (in 1854 and 1856). The author’s main thesis is that this image represented a significant change in the historiographic and historical-artistic interest for Dalmatian past and its monuments that had prevailed until that time. Kukuljević’s biased treatment of the mediaeval period as the historical heritage deserving priority on the national level was placed in opposition to the long-time dominant notion of the cultural and historical identity of Dalmatia based on the Antiquity cult. The author places Kukuljević’s attempt to rename Dalmatian historical landscape to the cradle of Croatian mediaeval past into the context of the history of Croatian lands, emphasising thereby the striving for including Dalmatia into the process of Croatian national integration as crucial ideological motivation. By analysing Kukuljević’s discourse, the newly awakened interest for the architectural heritage of Croatian mediaeval period is illustrated; it is further indicated to the changes in the evaluation of the monumental heritage, as well as to the expected, i.e. characteristic methodological mistakes. Having placed Kukuljević’s approach to the cultural and historical identity of monuments into an adequate epistemological and historical context, the author confirms the importance of his contribution to the development of the historiographic and historical-artistic interest for the cultural and the historical heritage of Dalmatia
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