Professional status and norm violation in email collaboration

Purpose Status is a central aspect of teamwork relationships and successful collaboration in teams, both online and offline. Status group membership and status perception shape behavioural expectations and norm perceptions of what is appropriate, but despite their importance have been neglected in previous research. Status effects are of special interest in online collaboration, e.g. via email, where no immediate feedback or non-verbal/paraverbal communication and direct observation is possible. The purpose of this study is to address this gap in research. Design/methodology/approach An experimental scenario study with two different professional status groups (lecturers and students) tested status effects on causal attributions, intergroup bias and emotional and collaborative responses to perceived norm violations in emails. Findings Results overall showed three key findings: a “black-sheep-effect” with harsher negative attributions for same status members, more aggression and less cooperation towards lower status senders and stronger (negative) emotional reactions towards high status senders. Originality/value The findings are important for managing professional online communication because negative personal attributions, strong emotions and aggressive behaviours can increase team conflict, lead to mistakes and generally undermine performance

Object and Arbiter: The Police and the Los Angeles Times, 1996-2006

This paper examines the treatment of the police in the Los Angles Times between 1996-2006 through content analysis and supplemental interviews of police officers as well as reporters from print, radio and television media. After a brief review of the history of the fortunes of the Los Angeles Police Department and the Los Angeles Times during the years under study, the paper describes patterns of police coverage. The content analysis revealed an increase in international stories, a decrease in stories of local interest and a dearth of articles that applied critical analysis of, or skeptical regard to, police actions. The content analysis and interviews revealed that police departments and the news industry were undergoing opposing shifts: while there was a rise in the tendency of police departments to professionalize their communications (with departments' Public Information Officers increasing dramatically in stories over the years of study), there was also a steep decline in the resources news outlets were devoting to coverage of the police. These opposing tendencies, when correlated with the shifts in police reporting revealed in content analysis of the Times, can help explain why the paper provides its readers with less sophisticated and political police coverage. In effect, police are more often used as “witnesses” of fact rather than objects of analysis. This lack of vigilance over police actions hinders improvement in police/community relations in Los Angeles

Just war and military morale: a brief reflection on the correlation between the legality of war and the moral repercussions for members of US and UK forces arising from the questionable legality of the campaign Iraqi Freedom of March 2003

Does it matter to a member of the military whether the military campaign in which he is taking part is lawful or not? Despite the observation that the crime of aggression (post Kampala 2010) constitutes a ‘leadership crime par excellence,’ which limits any (future) criminal responsibility accordingly, the legality or illegality of any military action under international law can create moral implications for the common foot soldier and mid-level officer and also have a tangible impact on the national legal frameworks under which these forces operate. This short article uses the example of Operation Iraqi Freedom (2003) to discuss the repercussions of a—most likely—illegal military campaign for individual members of democratic armed forces before the background of the present discussion of NATO led action in Libya

The High Costs of Large Enrollment Classes: Can Cooperative Learning Help?

We examine the potential for cooperative learning activities to offset costs of large enrollment courses. We use a quasi-experimental research design to examine achievement and course perceptions in small and large enrollment sections of microeconomic principles. While large enrollment sections attain lower levels of achievement (measured by course score) than those with smaller enrollments, this effect is partially mitigated by use of cooperative learning. Furthermore, while students in large enrollment sections report lower levels of satisfaction and learning than students in smaller sized classes, the use of cooperative learning eliminates the negative effects of increased class size on student perceptions

Differentiating patterns of violence in the family

The feasibility and prevalence of Reciprocal, Hierarchical and Paternal patterns of family aggression hypothesised by Dixon and Browne (2003) were explored within a sample of maltreating families. The psychological reports of 67 families referred to services for alleged child maltreatment that evidenced concurrent physical intimate partner violence and child maltreatment were investigated. Of these, 29 (43.3%) cases were characterised by hierarchical; 28 (41.8%) Reciprocal and 10 (14.9%) Paternal patterns. Significant differences in the form of child maltreatment perpetrated by mothers and fathers and parent dyads living in different patterns were found. In Hierarchical sub-patterns, fathers were significantly more likely to have been convicted for a violent and/or sexual offence than mothers and were significantly less likely to be biologically related to the child. The findings demonstrate the existence of the different patterns in a sample of families involved in the Child Care Protection process in England and Wales, supporting the utility of a holistic approach to understanding aggression in the family

Efficient Spin-Orbit Torques in an Antiferromagnetic Insulator with Tilted Easy Plane

Electrical manipulation of spin textures inside antiferromagnets represents a new opportunity for developing spintronics with superior speed and high device density. Injecting spin currents into antiferromagnets and realizing efficient spin-orbit-torque-induced switching is however still challenging due to the complicated interactions from different sublattices. Meanwhile, because of the diminishing magnetic susceptibility, the nature and the magnitude of current-induced magnetic dynamics remain poorly characterized in antiferromagnets, whereas spurious effects further complicate experimental interpretations. In this work, by growing a thin film antiferromagnetic insulator, {\alpha}-Fe2O3, along its non-basal plane orientation, we realize a configuration where an injected spin current can robustly rotate the N\'eel vector within the tilted easy plane, with an efficiency comparable to that of classical ferromagnets. The spin-orbit torque effect stands out among other competing mechanisms and leads to clear switching dynamics. Thanks to this new mechanism, in contrast to the usually employed orthogonal switching geometry, we achieve bipolar antiferromagnetic switching by applying positive and negative currents along the same channel, a geometry that is more practical for device applications. By enabling efficient spin-orbit torque control on the antiferromagnetic ordering, the tilted easy plane geometry introduces a new platform for quantitatively understanding switching and oscillation dynamics in antiferromagnets.Comment: 21 pages, 5 figure

Mechanism of calmodulin inactivation of the calcium-selective TRP channel TRPV6

Calcium (Ca2+) plays a major role in numerous physiological processes. Ca2+ homeostasis is tightly controlled by ion channels, the aberrant regulation of which results in various diseases including cancers. Calmodulin (CaM)–mediated Ca2+-induced inactivation is an ion channel regulatory mechanism that protects cells against the toxic effects of Ca2+ overload. We used cryo-electron microscopy to capture the epithelial calcium channel TRPV6 (transient receptor potential vanilloid subfamily member 6) inactivated by CaM. The TRPV6-CaM complex exhibits 1:1 stoichiometry; one TRPV6 tetramer binds both CaM lobes, which adopt a distinct head-to-tail arrangement. The CaM carboxyl-terminal lobe plugs the channel through a unique cation-π interaction by inserting the side chain of lysine K115 into a tetra-tryptophan cage at the pore’s intracellular entrance. We propose a mechanism of CaM-mediated Ca2+-induced inactivation that can be explored for therapeutic design

Large Spin Polarization from symmetry-breaking Antiferromagnets in Antiferromagnetic Tunnel Junctions

Efficient detection of the magnetic state is a critical step towards useful antiferromagnet-based spintronic devices. Recently, finite tunneling magnetoresistance (TMR) has been demonstrated in tunnel junctions with antiferromagnetic electrodes, however, these studies have been mostly limited to junctions with two identical antiferromagnet (AFM) electrodes, where the matching of the spin-split Fermi surfaces played critical role. It remains unclear if AFMs can provide a finite net spin polarization, and hence be used as a spin polarizer or detector. In this work, we experimentally fabricate single-sided antiferromagnetic tunnel junctions consisting of one AFM electrode (Mn3Sn) and one ferromagnet (FM) electrode (CoFeB), where the spin polarized tunneling transport from AFM is detected by the FM layer. We observe a high TMR at cryogenic temperature (>100% at 10 K) in these asymmetric AFM tunnel junctions, suggesting a large effective spin polarization from Mn3Sn despite its nearly vanishing magnetization. The large TMR is consistent with recent theoretical studies where the broken symmetry in non-collinear AFMs is predicted to lift the spin degeneracy in the band structure. Our work provides strong evidence that spin polarized electrical transport can be achieved from AFMs