Thermohaline circulation weakens-it would very likely cause abrupt shifts in regional weather patterns and the water cycle.” These could include “a southward shift in the tropical rain belt, weakening of the African and Asian monsoons, strengthening of Southern Hemisphere monsoons, and drying in Europe,” impacts that would greatly alter food production worldwide.
ENSO natural cycle in pacific ocean temperatures, winds, and clouds. ENSO is often behind extreme events. the phase starts at...
Transmission line
Characteristic Impedance:IMPORTANT PARAMETRES CONECTING THE SOURCE WITH TL ENDING WITH LOAD
VSWR: the ratio of max/min voltage on the line IF ZS=Z0=ZL THIS LEAD TO MINI VSWR MAX POWER TRANS
Reflection Coefficient (Γ): Ratio of reflected to incident voltage wave Γ= zero means perfect match
Use coaxial cable:
1- Lower frequencies <3GHZ
2-lower power requirements
Use waveguide:
1- Higher frequencies >3GHZ
2- Lower loss required
3- Higher efficiency at microwave frequencies...
Charte Graphique :
Communication Digitale :
Le Community Management consiste à gérer les publications sur les réseaux sociaux et à produire du contenu original. Ses objectifs :
Améliorer l’image de marque et l’e-réputation
Dialoguer avec les clients, fidéliser, prospecter
Tester des produits, innover grâce à l’intelligence collective
E-réputation : Se base sur les contenus et avis en ligne ; elle évolue lentement et repose sur des faits concrets (qualité, service client, etc.).
Image de marque
Comparison of Blue Ocean Strategy and Red Ocean
Strategy
1.• Blue Ocean Strategy focuses on creating uncontested market space.
• Red Ocean Strategy competes in existing market Space
2 •Blue Ocean Strategy makes the competition irrelevant.
• Red Ocean Strategy aims to beat the competition.
3.• Blue Ocean Strategy creates and captures new demand.
• Red Ocean Strategy exploits existing demand.
4.• Blue Ocean Strategy breaks the value/cost trade-on.
• Red Ocean Strategy makes the value/cost
1. La Recherche Documentaire :
C'est une démarche systématique pour identifier, récupérer et traiter les données.
Les Étapes Clés :
1 – Comprendre et définir le sujet
2 – Élaborer une problématique
3 – Rechercher des sources fiables
1. Острая дизентерия.
2. Холера.
3. Острая дизентерия, гастроэнтероколитическая форма.
4. Хроническая дизентерия, рецидивирующая форма.
5. Ботулизм.
6. Острая дизентерия, колитическая форма.
7. Сальмонеллез, гастроэнтеритическая форма.
8. Сальмонеллез, гастроэнтеритическая форма....
Topic 8: Energy – Forces Doing Work Work done = energy transferred when a force moves an object over a distance.Power = how quickly energy is transferred. Energy stores: kinetic, gravitational potential, elastic potential, thermal, chemical, nuclear. Energy transfers occur via mechanical work, electrical work, heating, and radiation.
Efficiency: The higher the efficiency, the less energy is wasted (often as heat/sound).
No machine is 100% efficient (except ideal transformers in theory).
Required
Motion & Forces distance = speed × time
Acceleration a = (v - u) / t a = acceleration v = final velocity u = starting velocity t = time
Force F = m × a (Force = mass × acceleration)
Weight W = m × g g = gravitational field strength (on Earth, g = 9.8 N/kg)
Momentum p = m × v (p = momentum)
Energy Kinetic Energy KE = ½ × m × v²
Gravitational Potential Energy GPE = m × g × h
Work Done Work = Force × distance E = F × d
Power (energy transfer) P = E / t (Power = Energy