Examining the Mechanisms Linking Work-Related Conflicts and Employee Well-Being: A Mediation Model

This study examines the role of negative affect state and relationship conflict in explaining the association between two types of work-related conflicts namely, task and process conflicts; and employee well-being. Drawing from affective events theory and social attribution theory, the study hypothesizes a mediation model in which task and process conflicts are negatively associated with employee well-being through negative affect state and relationship conflict. While examining this model, the study establishes the inter-linkage between task, process conflicts and employee well-being and identifies two pathways to explain these relationships. Based on a sample of 554 IT employees from India, the study found support for the mediation model in which negative affect state and relationship conflict mediates the relationship between two types of conflict and employee well-being. Findings of the present study contribute to the theory by extending our understanding of the effect of task and process conflicts on employee well-being and also explains how it impairs well-being. The current insights will help managers and practitioners to design interventions to mitigate the detrimental effect of task and process conflicts on employee well-being

Examining the Mechanisms Linking Work-Related Conflicts and Employee Well-Being: A Mediation Model

This study examines the role of negative affect state and relationship conflict in explaining the association between two types of work-related conflicts namely, task and process conflicts; and employee well-being. Drawing from affective events theory and social attribution theory, the study hypothesizes a mediation model in which task and process conflicts are negatively associated with employee well-being through negative affect state and relationship conflict. While examining this model, the study establishes the inter-linkage between task, process conflicts and employee well-being and identifies two pathways to explain these relationships. Based on a sample of 554 IT employees from India, the study found support for the mediation model in which negative affect state and relationship conflict mediates the relationship between two types of conflict and employee well-being. Findings of the present study contribute to the theory by extending our understanding of the effect of task and process conflicts on employee well-being and also explains how it impairs well-being. The current insights will help managers and practitioners to design interventions to mitigate the detrimental effect of task and process conflicts on employee well-being

Juvenile emperor penguin range calls for extended conservation measures in the Southern Ocean

To protect the unique and rich biodiversity of the Southern Ocean, conservation measures such as marine protected areas (MPAs) have been implemented. Currently, the establishment of several additional protection zones is being considered based on the known habitat distributions of key species of the ecosystems including emperor penguins and other marine top predators. However, the distribution of such species at sea is often insufficiently sampled. Specifically, current distribution models focus on the habitat range of adult animals and neglect that immatures and juveniles can inhabit different areas. By tracking eight juvenile emperor penguins in the Weddell Sea over 1 year and performing a meta-analysis including previously known data from other colonies, we show that conservation efforts in the Southern Ocean are insufficient for protecting this highly mobile species, and particularly its juveniles. We find that juveniles spend approximately 90% of their time outside the boundaries of proposed and existing MPAs, and that their distribution extends beyond (greater than 1500 km) the species' extent of occurrence as defined by the International Union for Conservation of Nature. Our data exemplify that strategic conservation plans for the emperor penguin and other long-lived ecologically important species should consider the dynamic habitat range of all age classes

Validation of Dive Foraging Indices Using Archived and Transmitted Acceleration Data: The Case of the Weddell Seal

Dive data collected from archival and satellite tags can provide valuable information on foraging activity via the characterization of movement patterns (e.g., wiggles, hunting time). However, a lack of validation limits interpretation of what these metrics truly represent in terms of behavior and how predators interact with prey. Head-mounted accelerometers have proven to be effective for detecting prey catch attempt (PrCA) behaviors, and thus can provide a more direct measure of foraging activity. However, device retrieval is typically required to access the high-resolution data they record, restricting use to animals returning to predictable locations. In this study, we present and validate data obtained from newly developed satellite-relay data tags, capable of remotely transmitting summaries of tri-axial accelerometer measurements. We then use these summaries to assess foraging metrics generated from dive data only. Tags were deployed on four female Weddell seals in November 2014 at Dumont d'Urville, and successfully acquired data over ~2 months. Retrieved archival data for one individual, and transmitted data for four individuals were used to (1) compare and validate abstracted accelerometer transmissions against outputs from established processing procedures, and (2) assess the validity of previously developed dive foraging indices, calculated solely from time-depth measurements. We found transmitted estimates of PrCA behaviors were generally comparable to those obtained from archival processing, although a small but consistent over-estimation was noted. Following this, dive foraging segments were identified either from (1) sinuosity in the trajectories of high-resolution depth archives, or (2) vertical speeds between low resolution transmissions of key depth inflection points along a dive profile. In both cases, more than 93% of the estimated PrCA behaviors (from either abstracted transmissions or archival processing) fell into inferred dive foraging segments (i.e., “hunting” segments), suggesting the two methods provide a reliable indicator of foraging effort. The validation of transmitted acceleration data and foraging indices derived from time-depth recordings for Weddell seals offers new avenues for the study of foraging activity and dive energetics. This is especially pertinent for species from which tag retrieval is challenging, but also for the post-processing of the numerous low-resolution dive datasets already available

WORKSPACE-BASED ARCHITECTURE SELECTION OF A 3-DEGREE- OF-FREEDOM PLANAR PARALLEL MANIPULATOR

ABSTRACT This paper presents the workspace-based architecture selection process and singularity analysis of a high-speed, high-precision three degree-of-freedom (3-DOF) planar parallel manipulator for wirebonding and electronic-component placement applications. A novel concept of manipulator "effective base area" is utilized for selecting the optimal architecture amongst the possible six well-known configurations. Dexterity regions, based on the manipulator requirements, within the reachable workspace have been identified for the selected architecture. Singular configurations of the optimal 3-PRR architecture have also been examined within the reachable workspace. Simulation results for both workspace and singularity analyses are also presented

Contribution a la mise au point d'un carbonisateur multiproduit villageois

SIGLECNRS T Bordereau / INIST-CNRS - Institut de l'Information Scientifique et TechniqueFRFranc