The electrochemical nitrogen reduction reaction (NRR) using clean energy is considered a promising alternative to the conventional Haber–Bosch process; however, developing highly active electrocatalyst still great challenge. In this study, ten metal dimers anchored in defective boron nitride (BN) monolayer as double-atom catalysts (DACs) with reverse sandwich structures were screened for their ...

Testing of high-speed Digital-to-Analog Converters (DACs) is a challenging task, as it requires large number of high-speed synchronized input signals with specific test patterns. To overcome this problem, we propose use of PRBS signals with an “Alternate-Bit-Tapping” technique and eye-diagram measurement as a solution to efficiently generate the testvectors and test the DACs. This approach cove...

Sharing genomic research data through controlled-access databases has increased in recent years. Policymakers and funding organizations endorse genomic data sharing in order to optimize the use of public funds and to increase the statistical power of databases. Well-established data access arrangements and data access committees (DACs)-responsible for reviewing and managing requests for access ...

A new design approach operating in the time domain for the design of Continuous-Time (CT) Σ∆ modulators is presented. The method obtains CT modulators that are exactly equivalent to Sampled-Time (SD) counterpart without any constraint on the shape of feedback DACs responses. The procedure is suitable and powerful for transistor-level studies because design can be performed directly using circui...

We study the joint transmitter optimization for the flat multiinput multi-output (MIMO) channel under nonlinear distortion from the digital-to-analog converters (DACs). Our design is based on a minimum mean square error (MMSE) approach, taking into account the effects of the transmitter nonlinearities. The derivation does not make use of the assumption of uncorrelated white distortion (quantiza...

New constraints on the large-scale wind structures responsible for discrete absorption components are obtained from far-ultraviolet time-series observations of O supergiants in the Large Magellanic Cloud. 1. What Causes DACs? Discrete absorption components (DACs) are optical depth enhancements in the absorption troughs of P Cygni profiles, which (a) occur very commonly in wind profiles of OB-ty...

Stability analysis of high-order delta-sigma loops is a challenge. In this brief, a sufficient design criterion is presented for highorder multibit error-feedback DACs which are especially suitable for high-speed operation. This analytical criterion might be too conservative, but it allows the design of stable, robust, and high-resolution deltasigma DACs. Both analytical and numerical analysis ...

In this paper, we present a systematic technique to design bandpass LC Σ∆ modulators with sinusoidal feedback DACs. The output resistance of the DAC degrades the quality factor of the LC resonator and the DAC output capacitance modifies its resonance frequency. It is shown that the DAC output resistance should be taken into account while designing the Q enhancement circuit of the integrated LC ...

Energy-efficiency (EE) is identified as a key 5G metric and will have major impact on the hybrid beamforming system design. The most promising designs include reduced number of radio-frequency (RF) chains with digital-to-analog converters (DACs) lower sampling resolution. However, naive reduction beamformer components to reduce power consumption typically leads significant loss spectral-efficie...