The aim of our paper is to analyse the process of collaboration between independent firms linked by a technological agreement in the energy field, with a specific focus on the degree of codification of inter-organisational rules. Considering the agreement as a collection of different types of more or less codified rules, we show that their degree of codification and some other characteristics have an impact on the process of inter-firm cooperation.The paper first provides an analytical framework defining the concept and the types of rules relevant for our purpose. A rule is conceived to solve a problem of allocation or creation of resources; it serves a main function which can be of a cognitive, incentive or coordination nature; it is ambivalent, i.e. it entails side functions in addition to the main one. Two theoretical propositions are then developed and largely confirmed by our empirical research results based on two detailed case studies in the emerging field of fuel cell (FC) technology. 相似文献
The paper analyses scientific research production at the laboratory level. The evidence on which the study is based describes precisely the research activity over the period 1993-2000 of more than eighty labs belonging to Louis Pasteur University, a large and well-ranked European research university. The research organization of the labs is analysed by focusing on the characteristics of the research personnel in relation with the scores in two outcomes that are publications and patents. The paper proposes a five-classes typology of laboratories that highlights different styles of research organization and productivity at the laboratory level. It also studies the determinants of the publication performances of labs. We show how appropriate combinations of inputs in academic labs may be strongly associated to high publication performances. We find that combining full-time researchers and university professors in labs tend to preserve incentives. Highly publishing labs also patent. The size of the labs, the individual promotions, and the role of non-permanent researchers and of non-researchers are also underlined. 相似文献
Athletes and their support team utilise technology to measure and evaluate technique and athletic performance. Existing techniques
for motion and propulsion measurement and analysis include a combination of indirect methods (high-speed video) and direct
methods (force plates and pressure systems). These methods are predominantly limited to controlled laboratory environments
(in a small area relative to the competition environment), require expert advice and support, and can take significant time
to evaluate the data. Consequently, the more advanced measurement techniques are considered to be restricted to specific coaching
sessions, or periods in the year leading up to competition, when the time and expertise of further support staff are available.
The more widely used, and simple, devices for monitoring ‘performance’ during running include stopwatches, GPS tracking and
accelerometer-based systems to count strides. These provide useful information on running duration, distance and velocity
but lack detailed information on many key aspects of running technique. In order to begin the process of development of more
innovative technologies for routine use by athletes and coaches, a study was required to improve the understanding of athletes’
and coaches’ perception of their requirements from measurement technology. This study outlines a systematic approach to elicit
and evaluate their perceptions, and presents the findings from interviews and a questionnaire. The qualitative data are presented
as a hierarchical graphical plot (structured relationship model) showing six general dimensions (technique, footwear and surface,
environment, performance, injury and cardiovascular) and shows the development of these general dimensions from the interviewee
quotations. The questionnaire quantitative data enhances the study by further ranking characteristics that arise from the
interviews. A contrast is shown between short and longer distance runner groups, as might be expected. The current technology
available to elite runners is briefly reviewed in relation to the 22 characteristics identified as important to measure. The
conclusions highlight the need for newer technologies to measure aspects of running style and performance in a portable and
integrated manner, with suggestions as to size and weight likely to be acceptable to users for emerging devices. 相似文献
In this study, we examined the impact of a male opponent's pre-match body language and clothing (general vs. sports-specific) on how his performances were judged by an observer. Forty male tennis players viewed videos of a male target tennis player warming up and then observed playing footage of the target. Each participant viewed the target player warming up displaying one of four combinations of body language and clothing (positive body language/tennis-specific clothing; positive body language/general sportswear; negative body language/tennis-specific clothing; negative body language/general sportswear). Participants rated the performance of the tennis player and gave their perceptions of the likely outcome of a tennis match with the target player. Analyses of variance indicated that clothing and body language had an interactive effect on both outcome expectations and ratings of performance. The findings support the contention that the initial impressions athletes form of their opponents can influence the way in which they judge the performances of opponents and their perceived likelihood of success against the same opponents. 相似文献
This randomised controlled trial investigated changes in eccentric hamstring strength, 10m sprint speed, and change-of-direction (COD) performance immediately post Nordic hamstring curl (NHC) intervention and following a 3-week detraining period.
Fourteen male team sports athletes were randomised to a do-as-usual control group (CG; n = 7) or to a NHC intervention group (NHC; n = 7). Isokinetic dynamometry at 180°/s evaluated eccentric hamstring strength immediately post-intervention as the primary outcome measure. Secondary outcomes included 10 m sprint time and COD. Each outcome was measured, pre, immediately post-intervention and following a 3-week detraining period.
Immediately post-intervention significant group differences were observed in the NHC group for eccentric hamstring strength (31.81 Nm?1 vs. 6.44 Nm?1, P = 0.001), COD (?0.12 s vs. 0.20 s; P = 0.003) and sprint (- 0.06 s vs. 0.05 s; P = 0.024) performance. Performance improvements were maintained following a detraining period for COD (?0.11 s vs. 0.20 s; P = 0.014) and sprint (?0.05 s vs. 0.03 s, P = 0.031) but not eccentric hamstring strength (15.67 Nm?1 vs. 6.44 Nm?1, P = 0.145) These findings have important implications for training programmes designed to reduce hamstring injury incidence, whilst enhancing physical qualities critical to sport. 相似文献
ABSTRACT Ankle injuries are highly prevalent in ballet, with strength highlighted as a primary risk factor. To profile ankle strength, fourteen female ballet dancers (age: 19.29 ± 1.59 years) completed an isokinetic testing protocol comprising concentric eversion (CONEV) and inversion (CONINV), and, eccentric inversion (ECCINV) trials at four angular velocities (30° · s?1, 60° · s?1, 90° · s?1, 120° · s?1) for both the dominant and non-dominant limb. In addition to Peak Torque (PT) and the corresponding Dynamic Control Ratios (DCRs), angle-specific derivatives of strength (AST) and Functional Range (FR) were calculated. There was no evidence of any significant bilateral strength asymmetry (p = 0.90) across all metrics, and no significant interactions with limb and contraction mode or velocity. A significant main effect for contraction mode (p = 0.001) highlighted greater ECCINV strength – which was maintained with increasing isokinetic velocity – in contrast to reductions in CONEV and CONINV strength. Specifically, dancers are ECCINV dominant at angular velocities greater than 60° · s?1, which is likely to be characteristic of most functional tasks. The lack of bilateral asymmetry may be attributed to dance training interventions that facilitate bilateral development, but ipsilateral mode and velocity-specific asymmetries have implications for injury risk and the training needs of female ballet dancers. 相似文献
There have been a number of articles recently advocating the use of nontraditional mediums to teach criminological theory. Many of these articles have advocated using music and/or music lyrics to illustrate and enliven the various theories taught in introductory theory courses. Despite the growing attention paid to teaching criminological theory, few, if any, discuss how to help students understand the more fundamental ontological question—what is “theory.” This article proposes an alternative pedagogical approach that draws upon students’ understanding of musical genres analogically to explain: (1) the historical development of the various theoretical approaches, (2) the historical, cultural and theoretical antecedents of the various approaches, and (3) how to identify the theoretical orientation(s) and influences in an unfamiliar text. Ultimately, this approach is intended to counter the overly compartmentalized and linear understanding of theory unintentionally brought on by the dynamics of teaching schedules, generic “theory” textbooks, computerized presentation software and testing methods. 相似文献