For the good of the group? Exploring group-level evolutionary adaptations using multilevel selection theory.

In this paper, we present an evolutionary framework, multilevel selection theory (MLS), that is highly amenable to existing social psychological theory and empiricism. MLS provides an interpretation of natural selection that shows how group-beneficial traits can evolve, a prevalent implication of social psychological data. We outline the theory and provide a number of example topics, focusing on prosociality, policing behavior, gossip, brainstorming, distributed cognition, and social identity. We also show that individual differences can produce important group-level outcomes depending on differential aggregation of individual types and relate this to the evolutionary dynamics underlying group traits. Drawing on existing work, we show how social psychologists can integrate this framework into their research program and suggest future directions for research

What Makes Lawyers Happy? A Data-Driven Prescription to Redefine Professional Success

This is the first theory-guided empirical research seeking to identify the correlates and contributors to the well-being and life satisfaction of lawyers. Data from several thousand lawyers in four states provide insights about diverse factors from law school and one’s legal career and personal life. Striking patterns appear repeatedly in the data and raise serious questions about the common priorities on law school campuses and among lawyers. External factors, which are often given the most attention and concern among law students and lawyers (factors oriented towards money and status—such as earnings, partnership in a law firm, law school debt, class rank, law review membership, and U.S. News & World Report’s law school rankings), showed nil to small associations with lawyer well-being. Conversely, the kinds of internal and psychological factors shown in previous research to erode in law school appear in these data to be the most important contributors to lawyers’ happiness and satisfaction. These factors constitute the first two of five tiers of well-being factors identified in the data, followed by choices regarding family and personal life. The external money and status factors constitute the fourth tier, and demographic differences were least important. Data on lawyers in different practice types and settings demonstrate the applied importance of the contrasting internal and external factors. Attorneys in large firms and other prestigious positions were not as happy as public service attorneys, despite the far better grades and pay of the former group; and junior partners in law firms were no happier than senior associates, despite the greatly enhanced pay and status of the partners. Overall, the data also demonstrate that lawyers are very much like other people, notwithstanding their specialized cognitive training and the common perception that lawyers are different from others in fundamental ways. Additional measures raised concerns. Subjects did not broadly agree that the behavior of judges and lawyers is professional, or that the legal process reaches fair outcomes; and subjects reported quite unrealistic earnings expectations for their careers when they entered law school. Implications for improving lawyer performance and professionalism, and recommendations for law teachers and legal employers, are drawn from the data

What Makes Lawyers Happy? A Data-Driven Prescription to Redefine Professional Success

This is the first theory-guided empirical research seeking to identify the correlates and contributors to the well-being and life satisfaction of lawyers. Data from several thousand lawyers in four states provide insights about diverse factors from law school and one’s legal career and personal life. Striking patterns appear repeatedly in the data and raise serious questions about the common priorities on law school campuses and among lawyers. External factors, which are often given the most attention and concern among law students and lawyers (factors oriented towards money and status—such as earnings, partnership in a law firm, law school debt, class rank, law review membership, and U.S. News & World Report’s law school rankings), showed nil to small associations with lawyer well-being. Conversely, the kinds of internal and psychological factors shown in previous research to erode in law school appear in these data to be the most important contributors to lawyers’ happiness and satisfaction. These factors constitute the first two of five tiers of well-being factors identified in the data, followed by choices regarding family and personal life. The external money and status factors constitute the fourth tier, and demographic differences were least important. Data on lawyers in different practice types and settings demonstrate the applied importance of the contrasting internal and external factors. Attorneys in large firms and other prestigious positions were not as happy as public service attorneys, despite the far better grades and pay of the former group; and junior partners in law firms were no happier than senior associates, despite the greatly enhanced pay and status of the partners. Overall, the data also demonstrate that lawyers are very much like other people, notwithstanding their specialized cognitive training and the common perception that lawyers are different from others in fundamental ways. Additional measures raised concerns. Subjects did not broadly agree that the behavior of judges and lawyers is professional, or that the legal process reaches fair outcomes; and subjects reported quite unrealistic earnings expectations for their careers when they entered law school. Implications for improving lawyer performance and professionalism, and recommendations for law teachers and legal employers, are drawn from the data

Models of Models: The Symbiotic Relationship between Models and Wargames

Military planning uses wargames to model the processes and decisions of an operation. As these operations become increasingly complex, the wargames similarly become more complex. Complex wargames are difficult to design and execute. As such, computer-based modeling and simulation can aid the wargame development, ensuring smooth execution. In particular, computer-based modeling and simulation can develop and validate the processes, determine initial conditions, evaluate the rules, and aid in validation. In turn, the wargame can provide useful data that can be fed into detailed models that can provide quantitative analysis to decision-makers

Deactivation of electrically supersaturated Te-doped InGaAs grown by MOCVD

Achieving and sustaining the highest doping level possible in InGaAs is critical for the reduction of contact resistance in future microelectronic applications. Tellurium (Te) is a very promising n-type dopant with high reported n-type doping densities. However, the stability of this dopant during post-growth thermal processing is unknown. Supersaturated Te-doped InGaAs layers were grown by MOCVD at 500 °C. The electrically active concentration of Te doping was 4.4 × 1019 cm−3 as grown. The thermal stability of the Te was investigated by studying the effect of post-growth annealing between 550 and 700 °C on the electrical activation. At all temperatures, the electrical activation decreased from its starting electron concentration of 4.4 × 1019 cm−3 down to 6–7 × 1018 cm−3. The rate of deactivation was measured at each temperature, and the activation energy for the deactivation process was determined to be 2.6 eV. The deactivation could be caused by either Te–Te clustering or a Te-point defect reaction. HAADF-STEM images showed no visible clustering or precipitation after deactivation. Based on previous ab initio calculations that suggest the VIII population increases as the Fermi level moves toward the conduction band, it is proposed that formation of isolated point defect complexes, possibly a Te–VIII complex, is associated with the deactivation process

Atomic Resolution Structure of the Oncolytic Parvovirus LuIII by Electron Microscopy and 3D Image Reconstruction.

LuIII, a protoparvovirus pathogenic to rodents, replicates in human mitotic cells, making it applicable for use to kill cancer cells. This virus group includes H-1 parvovirus (H-1PV) and minute virus of mice (MVM). However, LuIII displays enhanced oncolysis compared to H-1PV and MVM, a phenotype mapped to the major capsid viral protein 2 (VP2). This suggests that within LuIII VP2 are determinants for improved tumor lysis. To investigate this, the structure of the LuIII virus-like-particle was determined using single particle cryo-electron microscopy and image reconstruction to 3.17 Å resolution, and compared to the H-1PV and MVM structures. The LuIII VP2 structure, ordered from residue 37 to 587 (C-terminal), had the conserved VP topology and capsid morphology previously reported for other protoparvoviruses. This includes a core β-barrel and α-helix A, a depression at the icosahedral 2-fold and surrounding the 5-fold axes, and a single protrusion at the 3-fold axes. Comparative analysis identified surface loop differences among LuIII, H-1PV, and MVM at or close to the capsid 2- and 5-fold symmetry axes, and the shoulder of the 3-fold protrusions. The 2-fold differences cluster near the previously identified MVM sialic acid receptor binding pocket, and revealed potential determinants of protoparvovirus tumor tropism

The effect of link-length and vertex angle on mesh generation and pattern flattening for virtual clothing

Purpose - The purpose of this paper is to identify optimum operating parameters, namely link-length and vertex angle, for producing virtual clothing prototypes for the purpose of pattern flattening. Design/methodology/approach – Commercially available physically-based simulation and flattening engines were utilised to carry out the computational part of this study. Two separately developed 3D garment templates were used for the creation of virtual garments in the form of a triangulated mesh and later for pattern unwrapping by taking differential link-lengths and vertex angles into account to ascertain their effects on the mesh quality and on the ultimate pattern flattening process. Findings – It has been found that a link-length between 10 and 15 mm and a vertex angle between 120º and 160º are optimum for the virtual clothing prototyping process. Practical Implications – The findings of this study can universally be applied to simplify the tasks of virtual clothing prototyping and pattern unwrapping using commercial software packages. Originality/Value - Previously, there has not been any guidance available for the selection of specific operational parameters to promote 3D garment design

Revision total hip arthroplasty using the Zweymuller femoral stem

Background: A variety of femoral stem designs have been reported to be successful in revision total hip arthroplasty without consensus as to optimal design. We evaluated the clinical and radiographic outcomes in a consecutive series of femoral revisions using a wedge-shape, tapered-stem design at medium and long-term follow-up. Materials and methods: We performed a retrospective review of clinical and radiographic outcomes of twenty-eight consecutive femoral revisions arthroplasties, which were done using the Zweymuller femoral stem. Results: The mean follow-up was 7.4 years (range 2-15 years). No stem re-revision was necessary. All stems were judged to be stable by radiographic criteria at the most recent follow-up. The final mean Harris hip score was 90. There was no difference in Harris hip scores, implant stability, or radiological appearance (distal cortical hypertrophy or proximal stress shielding) of the implants between medium-term (mean 5.7 years) and long-term (mean 12.4 years) follow-up. Conclusions: We found the Zweymuller femoral stem design to be durable for revision hip arthroplasty when there is an intact metaphyseal-diaphyseal junction for adequate press-fit stability at surgery. © Springer-Verlag 2008

Anatomical characterization of the roots, leaves and culms of Guadua weberbaueri in different growing environments

There has been increasing interest in the use of bamboo for a variety of purposes. In the western Amazon region, specifically in the state of Acre, Brazil, native bamboo (Guadua weberbaueri Pilg.) grows in great abundance, which calls attention to its possible sustainable exploitation. Thus, this project aims to perform the anatomical characterization of the culms, leaves and roots of G. weberbaueri in different environments, both inside and along the border of a forest. For the analysis, samples were collected from culms, leaves and roots at the Zoobotanical Park of Federal University of Acre, and permanent slides were visualized by optical microscopy. We observed that the vascular bundles of the central leaf veins were wider in leaves from the border of the forest than in those from inside the forest. In contrast, the study of root anatomy showed differences in the diameter measurements of the xylem vessel elements, which were larger in those inside the forest than those from the border of the forest. The vascular bundles of culms did not present a difference, although a new characteristic found in this species is described