Abstract:Deploying recurrent predictors on microcontrollers is constrained by memory and multiply-accumulate budgets. We prepend a tiny multi-head attention readout to an echo state reservoir whose recurrent weights remain random and fixed. On standard chaotic benchmarks and a wind-speed telemetry set, the hybrid model reaches lower normalized error than purely linear readouts while staying within sixty kilobytes of weight storage on a representative ARM Cortex-M4 platform.
Abstract:Centralized biogas plants near wholesale markets can divert putrescible fractions from open dumping yet digestate quality is variable. We monitored a one-year pilot digester fed with sorted vegetable trimmings and co-digested manure, then field-tested liquid and solid digestate fractions on rainfed cereals. Yields and soil organic carbon gains matched mineral fertilizer controls on light soils when digestate was applied at agronomically calibrated nitrogen rates.
Abstract:Typological tables of transport jars are high-dimensional and sparse when sites preserve partial cargoes. We represent assemblages as compositional vectors over fabric and form classes, then cluster wrecks with affinity propagation to avoid specifying cluster counts a priori. The recovered groupings align with known production regions in most cases and suggest a plausible corridor for understudied eastern variants that lack secure stamps.
Abstract:Polarization switching in ultrathin ferroelectric barriers must remain reliable below two nanometres for embedded memory targets. We compare symmetric and asymmetric hafnia-zirconia stacks grown by atomic layer deposition on textured bottom electrodes. Capacitance-voltage loops and tunneling electroresistance ratios favour graded-composition interfaces that suppress pinhole leakage while preserving wake-up endurance beyond ten thousand cycles in capacitor test structures.
Abstract:Official route inventories often omit paratransit services that carry most daily trips. We trained students and community enumerators to trace shared taxi paths using smartphone GPS traces validated against focus groups. The resulting open geodatabase highlights interchange nodes and peak crowding segments that differ substantially from straight-line network assumptions used in prior accessibility studies for the same urban area.
Abstract:Missing scan lines and cloud shadows degrade subpixel abundance estimates in airborne hyperspectral cubes. We formulate the mixed pixels as a low-rank tensor plus sparse anomaly term and impose anisotropic total variation along spatial modes only. An alternating minimization solver recovers endmember fractions on benchmark datasets with lower root-mean-square error than matrix factorization baselines at comparable runtime.
Abstract:Unreliable grid supply may affect prenatal care and household stress pathways linked to fetal growth. Exploiting municipality-level rotation of announced blackout windows, we estimate event-study models on birth registry microdata spanning five years. Infants exposed to high-intensity rationing in the third trimester show modestly lower mean birthweight, with effects concentrated among households without backup generators.
Abstract:Regional air-quality models often misrepresent radical budgets when emissions inventories are uncertain. We couple a zero-dimensional photochemical box model to Markov chain Monte Carlo sampling constrained by intermittent OH and HO2 observations from a coastal supersite. Posterior emission scaling factors reduce bias in ozone production rates relative to a deterministic baseline while quantifying uncertainty in inferred volatile organic compound reactivity.
Abstract:Andean irrigation associations balance potato farmers, small hydropower interests, and municipal taps during dry seasons. Ethnographic observation of twelve board meetings was combined with flow measurements at bifurcation points. Agreements that bundled maintenance duties with rotating priority windows reduced conflict escalations compared with historical priority lists. Satellite-based soil moisture products were trusted only after calibration walks with elder irrigators. We outline facilitation scripts that keep technical data and customary calendars visible in the same worksheet templates.
Abstract:Automated solvothermal reactors generate thousands of powder patterns weekly, but metastable phases are often mislabeled when cooling profiles differ slightly. We coupled in situ turbidity curves with ex situ XRD clustering and labeled ambiguous branches via semi-supervised metrics. On a perovskite-halide subset, the pipeline recovered three intermediate solvates previously discarded as failed runs. Uncertainty flags routed roughly eight percent of batches to human crystallographers, keeping manual load manageable. The workflow is agnostic to reactor vendor APIs when logs export timestamped temperature ramps.