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Multi-input and Multi-variable systems01:22

Multi-input and Multi-variable systems

Cruise control systems in cars are designed as multi-input systems to maintain a driver's desired speed while compensating for external disturbances such as changes in terrain. The block diagram for a cruise control system typically includes two main inputs: the desired speed set by the driver and any external disturbances, such as the incline of the road. By adjusting the engine throttle, the system maintains the vehicle's speed as close to the desired value as possible.
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This lesson introduces two critical methods in pharmacokinetics, the Wagner-Nelson and Loo-Riegelman methods, used for estimating the absorption rate constant (ka) for drugs administered via non-intravenous routes. The Wagner-Nelson method relates ka to the plasma concentration derived from the slope of a semilog percent unabsorbed time plot. However, it is limited to drugs with one-compartment kinetics and can be impacted by factors like gastrointestinal motility or enzymatic degradation.
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Correction: Sutthanont et al. Effectiveness of Herbal Essential Oils as Single and Combined Repellents Against <i>Aedes aegypti</i>, <i>Anopheles dirus</i> and <i>Culex quinquefasciatus</i> (Diptera: Culicidae). <i>Insects</i> 2022, <i>13</i>, 658.

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Updated: Jun 29, 2026

Tactile Conditioning And Movement Analysis Of Antennal Sampling Strategies In Honey Bees Apis mellifera L.
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A Honey Bee In-and-Out Counting Method Based on Multiple Object Tracking Algorithm.

Chaokai Lei1, Yuntao Lu1, Zhiyuan Xing1

  • 1Key Laboratory of Agricultural Blockchain Application, Agricultural Information Institute, Chinese Academy of Agricultural Sciences, Ministry of Agriculture and Rural Affairs, Beijing 100081, China.

Insects
|January 8, 2025
PubMed
Summary
This summary is machine-generated.

Honey bees (Apis mellifera) are vital for ecosystems and agriculture through pollination and bee products. Understanding their importance is key to conservation efforts.

Keywords:
counting methodhoney beein-and-out activitymultiple object trackingobject detection

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Area of Science:

  • Ecology
  • Agriculture
  • Entomology

Background:

  • Honey bees (Apis mellifera) play a crucial role in ecological balance and human society.
  • They are significant providers of bee products and essential pollinators for numerous crops.

Purpose of the Study:

  • To highlight the ecological and economic importance of honey bees.
  • To underscore their contribution to crop pollination and bee product generation.

Main Methods:

  • Literature review on honey bee significance.
  • Analysis of ecological and agricultural data related to Apis mellifera.

Main Results:

  • Apis mellifera is indispensable for biodiversity and food security.
  • Pollination services by honey bees significantly boost crop yields and quality.

Conclusions:

  • Conservation of honey bee populations is critical for environmental sustainability and agricultural productivity.
  • Further research into honey bee health and management is warranted.