Our Work

Machine-learning screening of 1,066 stable perovskite-family oxides forvisible-light photocatalysis, with a grouped-model ablation and a literaturevalidation tier. This archive contains the training d…

Machine-learning screening of 1,066 stable perovskite-family oxides forvisible-light photocatalysis, with a grouped-model ablation and a literaturevalidation tier. This archive contains the training descriptors, the screeningpool, every generated data product, all figures, and the four scripts thatregenerate them.

2026-10-01: PAL range exports include one integrated association-rate CSV beside phase/catalog outputs, ready for training sample preparation. 2026-09-30: Unit-Gain Placeholder Treat gain 1.0 as mis…

2026-10-01: PAL range exports include one integrated association-rate CSV beside phase/catalog outputs, ready for training sample preparation. 2026-09-30: Unit-Gain Placeholder Treat gain 1.0 as missing calibration in local/AWS PAL and AI-PAL realtime processing, including legacy gain layouts. Retain waveform picking but output NaN station amplitude and exclude it from magnitude calculation if a selected component is uncalibrated. Existing amplitudes require reprocessing. AI-PAL repick version is advanced to invalidate previous repick completion records. Regression tests cover unit gain on all or one component and both AI-PAL/PALM calibration implementations. 2026-09-30: PAL Magnitude QC Require three distinct valid station magnitude estimates and population std <= 1.0, configurable with mag_min_stations and mag_max_std. Replace unconditional worst-station removal with a spread check followed by the median. Failed magnitude is -1 without discarding arrival picks or events; missing-gain amplitudes remain NaN. Magnitude merging excludes the -1 sentinel and retains other negative values. This supersedes the earlier NaN event-mag convention for PAL; MFT magnitude estimation is unchanged. Shared helper and parameter propagation cover local/AWS PAL and AI-PAL realtime/reassociation. Repick completion checks include magnitude thresholds. Tests cover the reported M6.56 case, missing amplitudes, distinct stations, negative magnitudes, threshold boundaries and AI-PAL/PALM source parity. 2026-09-29: Removed redundant waveform download examples from 2_run_mft. Use the shared preprocess/ workflow before template cutting and MFT. Missing instrument gains no longer remove arrival-time picks. Same-band location/epoch fallback is allowed; no cross-band gain borrowing. Uncalibrated amplitudes are nan and excluded from event magnitude. 2026-09-24: PAL amplitude QC no longer crashes on incomplete component windows. Unavailable checks are recorded as nan and bypassed; available failing checks still reject picks. Local picking exposes threads_per_worker for native numerical libraries, matching the AWS control; example launchers default to 2. Local PAL picking now uses independent date-block processes instead of station threads. Worker count controls date blocks; daily outputs and resume checks are unchanged, with per-block logs and aggregate console progress. Simplified local PAL entry points to 1_run_pal_pick_eg.py and 2_run_pal_assoc_eg.py; removed the redundant combined launcher. Local picking resumes without reading waveform tails for every skipped day; previous-day context is loaded only when picking actually resumes. Fixed daily trigger-count ownership at buffered boundaries: pre-QC candidates now use refined P time like accepted picks, avoiding false count failures. Local picking retains waveforms with missing gain locations/epochs, using warned same-band gain fallback or uncalibrated counts as a last resort. Local PAL picking now prints live day/station progress and a 30-second heartbeat while retaining detailed output in a line-buffered log. Daily PAL association now shares buffered picks across all subnets inside parallel contiguous date blocks, eliminating per-subnet pick-file rereads. PAL configs explicitly use a 30 s association buffer. Local PAL examples now enable cross-day association and pick halos, with bounded per-worker daily pick caching. Association resumes detect buffer-policy changes. Renamed PAL raw-waveform cleaning control to to_clean; legacy to_prep configs and reader calls remain supported. Filtering is unchanged. Unified configurable band/location selection (band first by default) and fullfed-derived, time-dependent NET.STA.BAND.LOC gain inventories across local and AWS PAL, AI-PAL realtime, and PALM MFT. Simplified files remain supported; routine post-merge station-file reconciliation is unnecessary. Fixed PAL event merging that discarded valid negative magnitudes. Missing magnitudes now use nan, not the physically valid value -1. Existing affected catalogs require magnitude recalculation; they are not auto-repaired.

Creativity is usually defined by what it produces: a novel and valuable object. This article proposes that, in its recursive form, creativity is defined by a relation: the coupling between the objects…

Creativity is usually defined by what it produces: a novel and valuable object. This article proposes that, in its recursive form, creativity is defined by a relation: the coupling between the objects produced and the design space in which they are produced. Objects expose the limits of the space; transforming the space makes previously unreachable objects possible; and that transformation may in turn alter the rule by which the space is transformed. The creative system is formalized as St = ⟨Vt, Et, Rt⟩ (variation, evaluation, reproduction) with dynamics St+1 = Φt(St, Ot, Xt) and three degrees of recursion. Three pure forms of transformation are distinguished (variational, evaluative, reproductive), and standard creativity is shown to be the degenerate case in which the loop does not close. The article reconstructs the state of the art, the ontology, the genealogy and the historicity of the concept, and locates the theory within the architecture of the General Theory of Technology (Technogenesis) as a recursive relation Ti → Cr → Tj, subject to membership criteria C1–C3 and to maturity (M) and correctability (K) diagnostics. Four propositions with falsification conditions are stated and the main objections are discussed. The contribution is conceptual and architectural; empirical validation is left as an explicit research program.

Integrar la comprensión lectora, la escritura y la oralidad en la educación secundaria es un reto complejo, pero también una oportunidad transformadora. Por ello, este estudio bus…

Integrar la comprensión lectora, la escritura y la oralidad en la educación secundaria es un reto complejo, pero también una oportunidad transformadora. Por ello, este estudio buscó diseñar, validar y aplicar de forma piloto un modelo pedagógico lector orientado al desarrollo de competencias comunicativas. La investigación, de tipo acción pedagógica con enfoque cualitativo y alcance propositivo, contó con la participación intencional de 23 estudiantes de tercer grado de una institución pública. Para recoger la información, se combinaron diversas técnicas e instrumentos como la observación participante, el análisis de producciones escritas, entrevistas semiestructuradas, rúbricas, listas de cotejo y un diario de campo. Luego, las evidencias se organizaron mediante análisis de contenido y triangulación, garantizando rigor y profundidad. Cuatro especialistas evaluaron el modelo en términos de pertinencia, coherencia, claridad y aplicabilidad, alcanzando una V de Aiken global de 0.89, lo que refleja una alta validez. Tras cuatro sesiones piloto, se observó un desplazamiento descriptivo hacia los niveles de “logro esperado” y “destacado” en comprensión lectora, producción escrita y expresión oral. Además, los hallazgos cualitativos revelaron que los estudiantes elaboraron inferencias más complejas, organizaron mejor sus textos y mostraron mayor seguridad al argumentar oralmente. En síntesis, el modelo demostró ser pertinente y viable en el contexto estudiado. No obstante, debido al tamaño reducido de la muestra y a la ausencia de un grupo de comparación, los cambios observados no permiten establecer relaciones causales sobre su efectividad, lo que invita a futuras investigaciones con diseños más robustos.

El presente trabajo es una base de datos de nombres de animales realizado para la tesis de maestría titulada "Reconstrucción léxica de nombres de animales en protopano y su clasif…

El presente trabajo es una base de datos de nombres de animales realizado para la tesis de maestría titulada "Reconstrucción léxica de nombres de animales en protopano y su clasificación etnobiológica". En esta base de datos se pueden ver tanto los datos recolectados de otros autores como la data proveniente del trabajo de campo realizado para esta tesis.

This study examines the social consequences of increasing crime in Guayaquil, Ecuador, and its effects on the city’s social fabric. Against the backdrop of rising violent and property-related of…

This study examines the social consequences of increasing crime in Guayaquil, Ecuador, and its effects on the city’s social fabric. Against the backdrop of rising violent and property-related offenses, the study analyzes how crime influences perceptions of security, social trust, and everyday social practices. The thesis conceptualizes crime as a structuring factor of social interaction within an urban context. The empirical basis consists of a qualitative study drawing on four semi-structured interviews with individuals from different socioeconomic positions, age groups, and residential settings. The data were analyzed using qualitative content analysis. The findings indicate that crime intensifies subjective perceptions of insecurity and fosters social withdrawal, generalized mistrust, and an erosion of institutional trust. Furthermore, gender- and class-specific differences in the perception and management of crime emerge.

Replication package for a census of 435 GitHub repositories with at least 5,000 stars that keep a .git-blame-ignore-revs file. It contains the sampling frame, the measurement and analysis scripts, the…

Replication package for a census of 435 GitHub repositories with at least 5,000 stars that keep a .git-blame-ignore-revs file. It contains the sampling frame, the measurement and analysis scripts, the per-repository measurement records with hashed developer identities, and the script that regenerates every number, table, and figure of the article.

La incorporación de inteligencia artificial en educación superior planteó oportunidades de personalización, aunque también exigió preservar autonomía, …

La incorporación de inteligencia artificial en educación superior planteó oportunidades de personalización, aunque también exigió preservar autonomía, equidad y sentido pedagógico. El estudio analizó la contribución de la inteligencia artificial a la personalización del aprendizaje universitario para comprender sus posibilidades en el desarrollo de competencias profesionales. Se desarrolló una investigación cualitativa, descriptiva y bibliográfica, examinada mediante métodos teórico, inductivo-deductivo, analítico-sintético y análisis documental. Los hallazgos mostraron que sistemas adaptativos, retroalimentación inmediata, seguimiento académico y recursos individualizados favorecieron trayectorias flexibles y capacidades vinculadas con pensamiento crítico, autonomía, resolución de problemas, alfabetización digital y juicio ético; paralelamente, dependencia tecnológica, sesgos algorítmicos, privacidad, desigualdad de acceso y preparación docente insuficiente condicionaron tales beneficios. Se concluyó que la personalización apoyada por inteligencia artificial adquirió valor formativo cuando mantuvo mediación docente, agencia estudiantil y propósitos profesionales definidos, configurándose como alternativa pertinente para enriquecer experiencias universitarias sin sustituir procesos cognitivos ni debilitar capacidades humanas necesarias para el desempeño profesional.