Categories - Consumption

Sub Categories

Topics

mobility, public-transportation, ocpp, buildings, cycling, chargingstation, crop-model, mobility-as-a-service, maintained, trucking, scooters, greenit, carsharing, biofuels, bikesharing, bikeshare, e-mobility, bike, walking, bike-share, crop-classification, agro-meteorological, greenops, irrigation, gbfs, water-balance, llm-inference, power-consumption-measurement, charging, ecoindex, power-consumption, rapl, green-coding, civic-tech, volkszaehler, travel, meteorological-data-interpolation, ridesharing, urban-design, autonomous-vehicles, charging-profiles, garden, wltp, vehicle, nedc, fuel-consumption, urban-energy-modeling, vegan, scooter-sharing, ubem, thermostat, permaculture, rice, csa, botanical-epidemiology, streetmix, agricultural-modelling, ecodesign, green, agronomy, traffic-simulation, energy-disaggregation, calculator, verkehrswende, radverkehr, sunspec, wattmeter, radinfrastruktur, bike-rental-services, bikes, cars, freefloating, lime, mobike, tier, velib, energy-simulation, mds, voi, carpooling, carshare, navitia, greensoftware, agriculture-data, routing, converters, insect, gtfsrouter, software, city, grafana-dashboard, pathogen, powerjoular, joular, ada, snow-melt, pathogen-spread, snow-accumulation, pest, pests, radiation-budget, plant-water-uptake, emissions-co2, ec2, power-management, seattle, resource-measurement, research-paper, profiling, service, hpc-systems, openstudio-sdk, commercial-building, electrical-meters, feature-engineering, feature-extraction, openstudio-models, openstudio-coalition, openstudio-application, openstudio, hacs-integration, temporal-data, hacs-custom, building-control, inria, urban, robotaxi, right-of-way, policy-as-code, passenger-services, mobility-data, micromobility, geofencing, fixed-route, delivery-robot, delivery, activity-based-travel-model, farmbot, node-gtfs, thermodynamic-cycles, refrigeration, process-engineering, heating, exergy, cooling, pik, magpie, trefle-api, trefle, plants-species, gardening-apps, farming-robots, transparency, premiumeichrecht, evroamingdeluxe, evroaming, green-technologies, plant-development, hydrologic-model, heat-flow, agrometeo, public transport, electric vehicles, data analysis, cartes, pouchdb, footprint, digital-sustainability, xgboost, outlier-removal, outlier-detection, missing-values, missing-data, google-app-engine, exploratory-data-analysis, bokeh, carbon-estimates, ingredients, building-simu, solawi, managment, acp, wordpress, sustainable-consumption, food-hubs, farmers, taxi, scooter-share, kotlin-android, accessiblity-scenarios, isochrones, webgis, city-builder, city-planning, onebusaway, open-transit-software-foundation, bike-sharing, gbfs-documentation, mobilitydata, shared-mobility, urban-mobility, apiplatform, coop, platformcoop, symfony, material-design, mobile-app, genai, generative-ai, dsmr-reader, dsmr4, dsmr5, dsmrp1, energy-consumption-visualizer, non-commercial, p1, telegram-data-storage, grassroots, demand-side-management, 3d-visualization, accessibility-analysis, appliance-level-consumption, electronics, naive-bayes-classifier, driving, engine, unece, awd, fertilisation, fertilizer, nitrogen, nitrogen-managements, plant-disease, rhizoctonia, rhizoctonia-solani, sheath-blight, split-plot, cropbox, apachespark, focus, transport-accessibility, bicycle-hire, bicycle-hire-systems, bike-data, bike-hire, message-bus, office-hours, volttron, volttron-applications, volttron-instance, bim, ibpsa, mpc, pops, credi, credits, fu, fue, fuel, fuels, low, nrm, tra, tran, trans, transfer, transfers, fem, finite-element-methods, grid-inverters, carbonifer, data-centers, gcp, nilm, nilm-algorithms, nilmtk, bpmn, camunda, camunda-platform-8, green-it, collaborative-science, noise-maps, intel-rapl, award, cre, cred, organic-agriculture, air-temperature, comfort, pmv, pmv-prediction, thermal-comfort, mlsys, android-room, dagger-hilt, expiration-date, expiration-monitoring, expiry, expiry-dates, food-tracker, google-play, jetpack-compose, modbus-meters, openhab, co2-monitoring, emission-tracker, location, scooter, cnossos-eu, noise, noise-modelling, noise-propagation, pathfinder, pathfinding, propagation, sound-propagation, steve, urban-building-energy-model, ramp-model, electric-vehicles-mobility, demand, charging-strategies, iso13790, building-stock-modelling, netstandard, bikeshare-systems, subsurface-flow, criteria-3d, boundary-conditions, 3d-water-fluxes, ridehailing, optimization-algorithms, mobility-modeling, carbon-free, water-simulation, slope-stability, irrigation-water-needs, irrigation-forecast, crop-development, jrc, eu, automotive, vegan-ingredients, vegan-dishes, scanner, progressive-web-app, openbeautyfacts, routes, co2-measurement, wifi, openevse, evse, schedule, sound-classification, sap-analytics-cloud, sap-ai-launchpad, sap-ai-core, sac-planning, predictive-maintenance, defect-detection, condition-monitoring, greenai, smart-cities, democracy, rgesn, rgaa, lighthouse, accessibility-testing, zigbee2mqtt, tuya, ts0601, spzb0001, sea802, sea801, moes, fog-computing, lernajs, houseplants, happy-plants, route-network, pubic-transport, origin-destination, desire-lines, cycle, epw-files, clima, building-design, transpiler, source-to-source, program-transformation, smart-city, building-automation, embodied-carbon, urban-meteorology, urban-energy-budget, town-energy-balance, teb, forecasting-model, energy-balance-model, chill-models, transportation-network, osmnx, bicycle-network, two-dimensional-soil, charging-station, trip-planning, trip-planner, open-api, journey-planner, nutrition-services, nutrition-information, nutriscore, barcode-scanner, barcode, seir-model, seir, rice-diseases, epirice-model, disease, crop-protection, agricultural-research, agricultural-modeling, wwcp, ev-roaming, residential-controls, residential, load-shifting, distributed-energy-resources, food-products, allergies, allergens, steam, modeling-tool, measur, industrial, furnace, factory, energy-assessment, crop-simulation-models, transport-planning, co2-footprint, carbon-measurement, hvac, commissioning, c99, seeds, germination, botany, rtm, remote, imagery, permacultura, mapa-da-agroecologia, free-software, agroforestry, agrofloresta, agroecologymap, agroecologia, sustainability-assessment, tania, farm-management, end-user, ddd-architecture, resilience, bigdata, kiva, foundation, parking, mobility-concepts, slow-travelers, eichrecht, chargy, multi-modal, geospatial-analytics, wallbox, semp, charger, timeseries-analysis, climat, traffic-signal-control, multiagent-systems, multiagent-reinforcement-learning, commercial, ecoscore, code-quality, controls, languages, clbg, offgrid, tesla-powerwall, tesla, powerwall-status, powerwall-api, transportation-planning, efa, typer, synthetic-data, thoughtworks, firefox-addon, chrome-extension, energy-consumption-analysis, pmsm, motor-models, gym-environment, electric-drive, cordova, www, mobility-trajectory, mathematical-programming, gym, gurobi, deep-reinforcement-learning, opensoftware, sam, synchronous-motors, inverters, grid-connected, electric-machines, electric-drives, smart-farming, j1939, isobus, iso11783, can, agritech, transitland, gtfs-rt, otb, watts, virtual-machines, qemu, limbo-project, revit-material-quantities, revit, material-mapping, treatments, streets, street-rule, street-configuration, procedural-generation, geometry, complete, cityengine, cga, arcgis-cityengine, aquacrop-ospy, aquacrop-os, aquacrop, pipelines, kedro, multivector, multi-vector, carbon-offsetting, carbon-offsets, carbon-neutral, shopify, r6, parametric-simulation, idd, eplus, energyplus-models, cryptoart,

Projects

Contributors

fostex68 [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Buildings and Heating
Topics: smartmeter, volkszaehler

TkdAndi [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Buildings and Heating
Topics: smartmeter, volkszaehler

TK pi@raspberrypi.(none)

OST Projects: 1
Categories: Consumption
Sub Categories: Buildings and Heating
Topics: smartmeter, volkszaehler, elixir, farmbot, nerves, plant, plant-care, 433mhz, rf, rtl-sdr and 3 more

unknown SSeegel@NW8440.(none)

OST Projects: 1
Categories: Consumption
Sub Categories: Buildings and Heating
Topics: smartmeter, volkszaehler

schoby schoby@penguin-Air

OST Projects: 1
Categories: Consumption
Sub Categories: Buildings and Heating
Topics: smartmeter, volkszaehler

root [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Buildings and Heating
Topics: smartmeter, volkszaehler

root [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Buildings and Heating
Topics: smartmeter, volkszaehler

root root@dockstar.(none)

OST Projects: 1
Categories: Consumption
Sub Categories: Buildings and Heating
Topics: smartmeter, volkszaehler

Saftwerk [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Buildings and Heating
Topics: smartmeter, volkszaehler

s4ndst0rm [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Buildings and Heating
Topics: smartmeter, volkszaehler

Andreas Antes [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Buildings and Heating
Topics: grid-inverters, modbus-meters, openhab, sunspec, volkszaehler

Noah Pflugradt [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Buildings and Heating
Topics:

Jared Mäenpää [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: mobility, mobility-as-a-service, transportation

Mark Piispanen [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: mobility, mobility-as-a-service, transportation

Daniel Stokowiec [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: mobility, mobility-as-a-service, transportation

Juha Lehtomaki [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: mobility, mobility-as-a-service, transportation

Ruslan Gainutdinov [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: mobility, mobility-as-a-service, transportation, co2, co2-emission, co2-emissions, emissions, ghg, greenhouse-gas-emissions, greenhouse-gases and 9 more

Juha Lehtomaki [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: mobility, mobility-as-a-service, transportation

travis [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: mobility, mobility-as-a-service, transportation

Tung Trinh [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: mobility, mobility-as-a-service, transportation

Andrew Hooker [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: carpooling, ridesharing, travel, devise, activejob, activerecord, mvc

Toni Ala-Piirto [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: mobility, mobility-as-a-service, transportation

Eric Sandeen [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: emoncms, evse, openenergymonitor, openevse, wifi

realdesilets47 [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: emoncms, evse, openenergymonitor, openevse, wifi

Jie Feng [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: attention, mobility-trajectory, prediction, www

Neil Wu [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: mach, adjoint, aerodynamics, cfd, design-optimization, heat-transfer, mdo, openfoam

Christopher Cook (Phobos) [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: chargingstation, electric-vehicles, ionic-framework, opendata

tenminutemail [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: android-app, public-transportation

mray [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: android-app, public-transportation

kas70 [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: android-app, public-transportation

Andrzej Godziuk [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: android-app, public-transportation

Michael Moroni [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: android-app, public-transportation

verdulo [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: android-app, public-transportation, geolocation, microg, unifiednlp

Balázs Úr [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: android-app, public-transportation, bike-sharing, bikesharing, biology, botany, collections

mesinger [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: android-app, public-transportation, active-record, cockroachdb, data-mapper, mariadb, oracle, sap, sap-hana, sqlserver and 2 more

Ward Segers [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: android-app, public-transportation

Marlin Arnz [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics:

Florimond [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: cycling

brainwad [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: cycling

Alfred [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: cycling

Josua Grawitter [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: cycling, optim, optimisation, unconstrained-optimisation, unconstrained-optimization

matt [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: android-app, public-transportation

Noxsense [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: android-app, public-transportation

Darius [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: converters, electric-drive, electrical-engineering, gym-environment, motor-models, openai-gym-environments, pmsm, reinforcement-learning, control, course-materials and 11 more

Arne [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: converters, electric-drive, electrical-engineering, gym-environment, motor-models, openai-gym-environments, pmsm, reinforcement-learning

RohithCharanD [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: converters, electric-drive, electrical-engineering, gym-environment, motor-models, openai-gym-environments, pmsm, reinforcement-learning

Stefan Arndt [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: converters, electric-drive, electrical-engineering, gym-environment, motor-models, openai-gym-environments, pmsm, reinforcement-learning

Deployment Bot (from Travis CI) [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: converters, electric-drive, electrical-engineering, gym-environment, motor-models, openai-gym-environments, pmsm, reinforcement-learning, embl, icon-font and 16 more

KoehlerM173 [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Mobility and Transportation
Topics: converters, electric-drive, electrical-engineering, gym-environment, motor-models, openai-gym-environments, pmsm, reinforcement-learning

leist [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

abhinn kothari [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica

Arunkumar Palanisamy arun@dev

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, julia-package, openmodelica, pkg

jensdo [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Alexander Carlqvist [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Bill Janssen [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica, apk, kivy, packaging

Anders Sandholm [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Martin Eitel [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

g-pavgr [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Worschech Niklas (DC/ENE22) [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Vitalij Ruge [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

bernhardbachmann [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Reino Ruusu [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Julian Ophey [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Jhansi Reddy Remala [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica

Andreas Remar [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Tuomas Miettinen [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica

Willi Braun [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

arunkumar palanisamy [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

g-bjoza [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Lena Buffoni [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Ariel Liebman [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica

Johanna Schneider [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

mflehmig [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica

Willi Braun wbraun@dev

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Vadim Engelson [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Sébastien Combel [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica

rfranke rfranke@f25d12d1-65f4-0310-ae8a-bbce733d8d8e

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

sjoelund.se sjoelund.se@f25d12d1-65f4-0310-ae8a-bbce733d8d8e

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

x02kajny [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Kristoffer Norling [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Joseph Schuchart [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Henning Kiel [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

EDGAR ALONSO LOPEZ ROJAS [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Adam Bergmark [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

x06klasj [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

x05simel [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica, openmodelica

Leo Ricupero [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica

rbulatow [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica

Jens Schönbohm [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica

Teus van der Stelt [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica

Ximalas [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Production and Industry
Topics: modelica

Raffin, Guillaume [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Computation and Communication
Topics: carbon-footprint, electricity-consumption, electricity-meter, energy-consumption, energy-efficiency, greenit, measure, qemu, sustainability, virtual-machine and 3 more

Sebastian Werner [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Computation and Communication
Topics: carbon-footprint, electricity-consumption, electricity-meter, energy-consumption, energy-efficiency, greenit, measure, qemu, sustainability, virtual-machine and 3 more

Nicolas Trangosi [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Computation and Communication
Topics: carbon-footprint, electricity-consumption, electricity-meter, energy-consumption, energy-efficiency, greenit, measure, qemu, sustainability, virtual-machine and 20 more

Florian VALEYE [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Computation and Communication
Topics: carbon-footprint, electricity-consumption, energy-consumption, energy-efficiency, sustainability

Philipp Wendler [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Computation and Communication
Topics: rapl, resource-measurement, smt, benchmark-framework, benchmarking, cgroups, competition, software-verification, sv-comp, verification and 8 more

Silvia [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Computation and Communication
Topics:

h205c [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Computation and Communication
Topics:

Thomas Lemberger [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Computation and Communication
Topics: rapl, resource-measurement, benchmark-framework, benchmarking, cgroups

Jordan [email protected]

OST Projects: 1
Categories: Consumption
Sub Categories: Computation and Communication
Topics: energy-monitoring, green-computing, inria, power-meter