Skip to main content

AI Agents: What They Are and How They Will Change Work

Artificial intelligence has moved beyond simply answering questions and generating text. A new generation of AI systems—known as AI agents—is emerging with the ability to plan tasks, use tools, make decisions, and complete multi-step workflows with less human intervention. From managing emails and analyzing data to writing software and assisting customers, AI agents could significantly change how people work. What Are AI Agents? An AI agent is a software system that can perceive information, reason about a goal, take actions, and adapt based on the results. Traditional AI tools usually respond to a specific instruction. For example, you might ask an AI chatbot to summarize a document, and it provides a summary. An AI agent can go further. You could give an agent a goal such as: "Research three competitors, compare their pricing, summarize their main features, and prepare a report." The agent may then: 1) Understand the objective. 2) Break the task into smaller steps. 3) Searc...

HEAT AND THERMODYNAMICS

Heat:
* Temperature is the thermal state of the body, that chooses the direction of flow of heat. 
* “Heat is a form of energy transfer between two systems or a system and its surroundings due to temperature difference between them. 
Specific heat capacity 
* Specific heat capacity of a substance is determined as the quantity of heat required to raise the temperature of 1 kg of the substance through 1K. Its unit is J kg^–1K^–1.
* The specific heat capacity of water is the highest for any substance, 4180 J/kg K. It is 30 times the specific heat capacity 
of mercury which is about 140J/kg K. 
Specific Latent Heat 
Specific Latent Heat of fusion of any substance is the quantity of heat energy needed to melt one kilogram of a substance without change in temperature. The symbol used is L. The unit for specific 
latent heat is Joule/kilogram or J/kg 
The Gas Laws 
* Boyle’s Law 
“Temperature remaining constant, the pressure of a given mass of gas is inversely proportional to its volume”. 
[Temp remaining constant] It is also be stated as PV = a constant 
Charles’ law
* Charles’ Law 
States that “Pressure remaining constant, the volume of a given weight of gas is directlyproportional to the absolute 
temperature”. This is referred to as the law of volumes. A constant [Pressure remaining constant] It can also be stated as V α T =V/T = a constant 
Kelvin Scale or Absolute Temperature:
* The zero of the Kelvin scale corresponds to -273°C and is written as 0K (without the degree symbol). One section on the Kelvin scale has the same magnitude of 
temperature as one division of the Celsius or Centigrade scale. Thus 0°C corresponds to +273K. 
Kelvin scale(K) = Celsius scale (0°C) +     273 
 Celsius scale (0°C) = Kelvin scale 
 (K) – 273 
Adiabatic process 
In Greek, adiabatic means “nothing passes through”. The process in which pressure, volume and temperature of a system differs in such a manner that during the difference no heat enters or leaves the system is called adiabatic process. Thus in adiabatic process, the total heat of the system remains constant 
Carnot engine 
* Heat engine is a device which produce mechanical energy from heat energy.
Refrigerator 
* A refrigerator is a cooling device. An ideal refrigerator can be regarded as Carnot’s heat engine working in the reverse direction. Therefore, it is also 
called a heat pump 
Transfer of heat 
* There are three ways in which heat energy may get transferred from one place to another place. These are conduction, convection and radiation 
Conduction 
* By the process of conduction heat is transmitted through the solids 
Applications 
i. The houses of Eskimos are made up of double walled blocks of ice. Air enfold in between the double walls prevents
transmission of heat from the house to the coldest surroundings. 
ii. Birds often swell their feathers in winter to enclose air between their body and the feathers. Air stops the loss of heat from the body of the bird to the cold 
surroundings. 
iii. Ice is packed in gunny bags or sawdust because, air corned in the saw dust prevents the transfer of heat from the surroundings to the ice. Hence ice does not melt 
Convection 
* It is a phenomenon of transfer of heat in a fluid with the actual movement of the particles of the fluid 
Application 
* It plays an major role in ventilation and in heating and cooling system of the houses. 
Radiation 
* It is the phenomenon of transfer of heat without any material medium. Such a process of heat moves in which no material medium takes part is known as radiation. 
Thermal radiation
* The energy emitted by a body in the form of radiation on account of its temperature is called thermal radiation. 
 It depends on, 
(i) Temperature of the body, 
(ii) Nature of the radiating body 
* The wavelength of thermal radiation ranges from 8 × 10-7m to 4 × 10^-4m. They belong to infra-red region of electromagnetic spectrum. 
Properties of thermal radiations 
1. Thermal radiations can travel through vacuum. 
2. They travel with the speed of light. 
3. They can be reflected and refracted. They exhibit the phenomenon of  interference and diffraction. 
4. They do not heat the intervening     medium through which they pass. 
5. They obey inverse square law. 
Emissive power 
* Emissive power of a body at a given temperature is the total amount of energy emitted per unit time per unit area of the surface for a givenwavelength. It is denoted by eλ. Its unit is W m-2. 
Perfect black body 
* A perfect black body is the one which occupy completely heat radiations of all wavelengths which fall on it and emits heat radiations of all wavelengths when heated. Since a perfect black body neither 
transmits nor transmits any radiation, the absorptive power of a perfectly black body is unity. 
Kirchoff’s Law
*According to this law, the ratio of emissive power to the absorptive power corresponding to a specific wavelength and at a given temperature is always a constant for all bodies. 
        (eλ / aλ) = constant = E λ
Stefan’s law
* Stefan’s law states that the amount of heat energy radiated per second per unit area of a perfect black body is directly proportional to the fourth power of its absolute temperature. 
 (i.e) E α T4 or E = σT4
* Where σ is called the Stefan’s constant. Its value is 5.67 × 10-8 W m-2 K-4. 
NEWTON’S LAW OF COOLING
Newton’s law of cooling states that the amount of cooling of a body is directly proportional to the temperature difference between the body and the surroundings 
Solar constant
* The solar constant is the amount of 
radiant energy received per second per unit area by a perfect black body on the Earth with its surface perpendicular to the direction of radiation from the sun in the 
absence of atmosphere. It is denoted by S and its value is 1.388 × 103 W m-2. Surface temperature of the Sun can be calculated from solar constant. 
Angstrom Pyrheliometer 
* Pyrheliometer is an instrument used to measure the quantity of heat radiation and solar constant.


Labels:

Popular posts from this blog

MEMORY MAPPED FILES

Memory-mapped files           Rather than retriving data files directly via the file system with every file access, data files can be paged into memory the same as process files, resulting in much faster retrieves ( except of course when page-faults occur. ) This is called as memory-mapping a file. Basic Mechanism * Basically a file is mapped to an address range within a process's virtual address space, and then paged in as required using the ordinary demand paging system. * Note that file matches are made to the memory page frames, and are not immediately written out to disk. ( This is the purpose of the "flush( )" system call, which may also be needed for stdout in some cases. See the time killer program for an example of this) * This is also why it is important to "close()" a file when one is done writing to it - So that the data can be safely flushed out to disk and so that the memory frames can be release for other purposes. * Some systems issue special sys...
Read more

Organic Farming: A Pathway to Sustainable Agricultural Production

Introduction : In recent years, organic farming has gained considerable attention as a sustainable alternative to conventional agriculture. As concerns over environmental degradation, food security, and public health rise, organic farming offers a holistic approach to agricultural production that aligns with nature’s own processes. This blog post explores the significance of organic farming in promoting sustainable agriculture, its key principles, and the benefits it offers for farmers, consumers, and the environment. Understanding Organic Farming Organic farming is an agricultural practice that emphasizes the use of natural inputs and processes to cultivate crops and raise livestock. Unlike conventional farming, which often relies on synthetic chemicals, genetically modified organisms (GMOs), and monoculture practices, organic farming seeks to work in harmony with the environment. It avoids synthetic pesticides and fertilizers, instead focusing on building healthy soil, fostering biod...
Read more

Embracing the Future: Resource Recovery from Waste

As global populations swell and industrial activities intensify, the amount of waste we generate is skyrocketing. Landfills, once considered an adequate solution, are now recognized as unsustainable and environmentally damaging. Enter resource recovery from waste – a transformative approach that views waste not as a problem, but as a potential treasure trove of resources. This blog post delves into the concept, methods, and benefits of resource recovery, illuminating how this practice is reshaping waste management and sustainability. What is Resource Recovery? Resource recovery refers to the process of extracting useful materials or energy from waste. Instead of simply discarding waste, resource recovery emphasizes reusing, recycling, and repurposing materials to reduce the volume of waste sent to landfills and minimize environmental impact. Key Methods of Resource Recovery Recycling: This is perhaps the most well-known form of resource recovery. Recycling involves converting waste mat...
Read more