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1. Fiber bundle codes: breaking the n ^1/2 polylog( n ) barrier for Quantum LDPC codes

   https://doi.org/10.1145/3406325.3451005  

   Hastings, Matthew B.; Haah, Jeongwan; O'Donnell, Ryan (June 2021, Proceedings of the 53rd Annual ACM SIGACT Symposium on Theory of Computing)
2. VT-IO: A Virtual Time System Enabling High-fidelity Container-based Network Emulation for I/O Intensive Applications

   https://doi.org/10.1145/3635307  

   Chen, Gong; Hu, Zheng; Qu, Yanfeng; Jin, Dong (December 2023, ACM Transactions on Modeling and Computer Simulation)

   Network emulation allows unmodified code execution on lightweight containers to enable accurate and scalable networked application testing. However, such testbeds cannot guarantee fidelity under high workloads, especially when many processes concurrently request resources (e.g., CPU, disk I/O, GPU, and network bandwidth) that are more than the underlying physical machine can offer. A virtual time system enables the emulated hosts to maintain their own notion of virtual time. A container can stop advancing its time when not running (e.g., in an idle or suspended state). The existing virtual time systems focus on precise time management for CPU-intensive applications but are not designed to handle other operations, such as disk I/O, network I/O, and GPU computation. In this paper, we develop a lightweight virtual time system that integrates precise I/O time for container-based network emulation. We model and analyze the temporal error during I/O operations and develop a barrier-based time compensation mechanism in the Linux kernel. We also design and implement Dynamic Load Monitor (DLM) to mitigate the temporal error during I/O resource contention. VT-IO enables accurate virtual time advancement with precise I/O time measurement and compensation. The experimental results demonstrate a significant improvement in temporal error with the introduction of DLM. The temporal error is reduced from 7.889 seconds to 0.074 seconds when utilizing the DLM in the virtual time system. Remarkably, this improvement is achieved with an overall overhead of only 1.36% of the total execution time. 

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3. VT‐NMR Analysis of Rotation‐Inversion of N ‐(4‐hydroxybutyl)‐ N ‐(2,2,2‐trifluoroethyl) tert ‐butyl Carbamate: Utilizing the −CH ₂ CF ₃ Appendage as a Reporter on E / Z ‐Isomerization

   https://doi.org/10.1002/slct.202401323  

   Jameson, Brian; Glaser, Rainer (April 2024, ChemistrySelect)

   Abstract The rotational barrier about the CN carbamate bond ofN‐(4‐hydroxybutyl)‐N‐(2,2,2‐trifluoroethyl)tert‐butyl carbamate1was determined by variable temperature (VT)¹³C and¹⁹F NMR spectroscopy. The −CH₂CF₃ appendage reports on rotational isomerism and allows for the observation of separate signals for the E‐ and Z‐ensembles at low temperature. The activation barrier for E/Z‐isomerization was quantified using Eyring‐Polanyi theory which requires the measurements of the maximum difference in Larmor frequency Δν_max and the convergence temperature T_c. Both Δν_max and T_c were interpolated by analyzing sigmoidal functions fitted to data describing signal separation and the quality of the superposition of the E‐ and Z‐signals, respectively. Methods for generating the quality‐of‐fit parameters for Lorentzian line shape analysis are discussed. Our best experimental value for the rotational barrier ΔG_c^≠(1)=15.65±0.13 kcal/mol is compared to results of a higher level ab initio study of the modelN‐ethyl‐N‐(2,2,2‐trifluoroethyl) methyl carbamate. 

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4. Every Bit Counts: A New Version of Non-binary VT Codes with More Efficient Encoder, IEEE International Conference on Communications, Rome, Italy, May 28-June 1, 2023

   https://doi.org/10.1109/ICC45041.2023.10279099  

   Nguyen, Tuan Thanh; Cai, Kui; Siegel, Paul H (May 2023, IEEE)
5. Differential Volatile Organic Compound Expression in the Interaction of Daldinia eschscholtzii and Mycena citricolor

   https://doi.org/10.1021/acsomega.3c03865  

   Escudero-Leyva, Efraín; Quirós-Guerrero, Luis; Vásquez-Chaves, Víctor; Pereira-Reyes, Reinaldo; Chaverri, Priscila; Tamayo-Castillo, Giselle (August 2023, ACS Omega)