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1. Total Syntheses of (±)‐Dracocephalone A and (±)‐Dracocequinones A and B

   https://doi.org/10.1002/anie.202210821  

   Hwang, Taehwan; Tuccinardi, Joseph P.; Beard, Alexandra A.; Jackson, Amy C.; Jung, Min J.; Wood, John L. (October 2022, Angewandte Chemie International Edition)

   Abstract Described herein are the first total syntheses of (±)‐dracocephalone A (1) and (±)‐dracocequinones A (4) and B (5). The synthesis was initially envisioned as proceeding through an intramolecular isobenzofuran Diels–Alder reaction, a strategy that eventually evolved into a Lewis acid‐promoted spirocyclization. This highly diastereoselective transformation set the stage fortrans‐decalin formation and a late‐stage Suárez oxidation that produced a [3.2.1] oxabicycle suited for conversion to1. Brønsted acid‐mediated aromatization, followed by a series of carefully choreographed oxidations, allowed for rearrangement to a [2.2.2] oxabicycle poised for conversion to4and5. 

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2. Folding points to a point and lines to a line

   Akitaya, Hugo A.; Ballinger, Brad; Demaine, Erik D.; Hull, Thomas C.; Schmidt, Christiane (August 2021, Proceedings of the 33rd Canadian Conference on Computational Geometry (CCCG 2021))

   He, Meng; Sheehy, Don (Ed.)

   We introduce basic, but heretofore generally unexplored, problems in computational origami that are similar in style to classic problems from discrete and computational geometry. We consider the problems of folding each corner of a polygon P to a point p and folding each edge of a polygon P onto a line segment L that connects two boundary points of P and compute the number of edges of the polygon containing p or L limited by crease lines and boundary edges. 

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3. geomorph v4.0 and gmShiny: Enhanced analytics and a new graphical interface for a comprehensive morphometric experience

   https://doi.org/10.1111/2041-210X.13723  

   Baken, Erica K.; Collyer, Michael L.; Kaliontzopoulou, Antigoni; Adams, Dean C. (September 2021, Methods in Ecology and Evolution)

   Abstract Geometric morphometric (GM) tools are essential for meaningfully quantifying and understanding patterns of variation in complex traits like shape. In this field, the breadth of answerable questions has grown dramatically in recent years through the development of new analyses and increased computational efficiency.In this note, we describe the ways in whichgeomorph, a widely usedRpackage for quantifying and analysing GM data, has grown with the field.We presentgeomorph v4.0and describe the ways in which this version has dramatically improved upon previous versions. We also present a new graphical user interface for easy implementation,gmShiny.These contributions positiongeomorphto be the primary tool for GM analyses, particularly those employing a phylogenetic comparative approach. 

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4. Computational sustainability: computing for a better world and a sustainable future

   https://doi.org/10.1145/3339399  

   Gomes, Carla; Dietterich, Thomas; Barrett, Christopher; Conrad, Jon; Dilkina, Bistra; Ermon, Stefano; Fang, Fei; Farnsworth, Andrew; Fern, Alan; Fern, Xiaoli; et al (August 2019, Communications of the ACM)

   Computer and information scientists join forces with other fields to help solve societal and environmental challenges facing humanity, in pursuit of a sustainable future. 

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5. Dispersive nonreciprocity between a qubit and a cavity

   https://doi.org/10.1126/sciadv.adj8796  

   Wang, Ying-Ying; Wang, Yu-Xin; van_Geldern, Sean; Connolly, Thomas; Clerk, Aashish A; Wang, Chen (April 2024, Science Advances)

   The dispersive interaction between a qubit and a cavity is ubiquitous in circuit and cavity quantum electrodynamics. It describes the frequency shift of one quantum mode in response to excitations in the other and, in closed systems, is necessarily bidirectional, i.e., reciprocal. Here, we present an experimental study of a nonreciprocal dispersive-type interaction between a transmon qubit and a superconducting cavity, arising from a common coupling to dissipative intermediary modes with broken time reversal symmetry. We characterize the qubit-cavity dynamics, including asymmetric frequency pulls and photon shot noise dephasing, under varying degrees of nonreciprocity by tuning the magnetic field bias of a ferrite component in situ. We introduce a general master equation model for nonreciprocal interactions in the dispersive regime, providing a compact description of the observed qubit-cavity dynamics agnostic to the intermediary system. Our result provides an example of quantum nonreciprocal phenomena beyond the typical paradigms of non-Hermitian Hamiltonians and cascaded systems. 

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