EFFECT OF ROLE DYNAMICS ON TRANSACTIVE MEMORY SYSTEM AND TEAM PERFORMANCE IN OPEN-SOURCE SOFTWARE TEAMS: THE MODERATING ROLE OF COMMUNICATION

Open-source software (OSS) development is leading trends in the software market. OSS teams occupied with knowledge-intensive tasks are confronted with role-related issues. Team-level role dynamics (i.e., role ambiguity and role conflict) which manifest whether information about roles (e.g., expected responsibilities, behaviours, and outcomes) perceived by members are clarified and coherent, affect team performance. Information about roles can be considered clues for expertise recognition and location, which strengthens members’ reliable understandings about others’ knowledge and work cooperation. Namely, it may influence transactive memory system (TMS), a group work pattern based on cognitive labour division. Although prior studies have proposed that role-related constructs (e.g., role identification, and role conflict) influence team cognitions (e.g., TMS) and team performance, the relationships between role dynamics, TMS and team performance are still unclear. This study intends to explore the affective and cognitive mechanism through which role dynamics influence TMS under various boundary conditions (i.e., instrumental and expressive communication), and provides a further understanding about how to enhance team performance within the mechanism. An empirical study sampling from OSS communities like SourceForge and GitHub will be conducted to verify our hypotheses. Our research intends to offer theoretical and managerial implications about role concerns in OSS teams

InGaAs 3D MOSFETs with Drastically Different Shapes Formed by Anisotropic Wet Etching

In this work, we report on a 3D device fabrication technology achieved by applying a novel anisotropic wet etching method. By aligning channel structures along different crystal orientations, high performance 3D InGaAs devices with different channel shapes such as fins, nanowires and waves have been demonstrated. With further optimizing off-state leakage path by barrier engineering, a record high ION/IOFF over 10(8) and minimum I OFF~3pA/um have been obtained from InGaAs FinFET device. Scaling metrics for InGaAs GAA MOSFETs and FinFETs are systematically studied with Lch from 800 nm down to 50 nm and WFin/WNW from 100 nm down to 20 nm which shows an excellent immunity to short channel effects.Chemistry and Chemical Biolog

Synthesis of Calcium(II) Amidinate Precursors for Atomic Layer Deposition through a Redox Reaction between Calcium and Amidines

Abstract We have prepared two new CaII amidinates, which comprise a new class of ALD precursors. The syntheses proceed by a direct reaction between Ca metal and the amidine ligands in the presence of ammonia. Bis(N,N′‐diisopropylformamidinato)calcium(II) (1) and bis(N,N′‐diisopropylacetamidinato)calcium(II) (2) adopt dimeric structures in solution and in the solid state. X‐ray crystallography revealed asymmetry in one of the bridging ligands to afford the structure [(η2‐L)Ca(μ‐η2:η2‐L)(μ‐η2:η1‐L)Ca(η2‐L)]. These amidinate complexes showed unprecedentedly high volatility as compared to the widely employed and commercially available CaII precursor, [Ca3(tmhd)6]. In CaS ALD with 1 and H2S, the ALD window was approximately two times wider and lower in temperature by about 150 °C than previously reported with [Ca3(tmhd)6] and H2S. Complexes 1 and 2, with their excellent volatility and thermal stability (up to at least 350 °C), are the first homoleptic CaII amidinates suitable for use as ALD precursors

Bright electroluminescence from a new conjugated dendrimer

Photoluminescence and electroluminescence from a new conjugated dendrimer consisting of three distyrylbenzene units linked by a central nitrogen atom as core and meta-linked biphenyl units as dendrons were investigated. Bright electroluminescence was realized by using bilayer devices with blurred interface, which were fabricated by sequentially spin-coating a neat dendrimer and a dendrimer doped with 2-(4-biphenyl)-5-(4-tert-butylphenyl)-1,3,4-oxadiazole (PBD). By optimizing the concentration of PBD, the maximum brightness and EL quantum efficiency reach 4100 cd/m(2) and 0.10%, respectively