(b) ई-कॉमर्स को बढ़ावा देने के लिए मल्टीमीडिया का उपयोग कैसे किया जाता है ? इसकी व्याख्या कीजिए । [उत्तर सीमा: 250 शब्द] [UKPSC 2023]
Biometrics approach to identification and authentication in which unique biological or behavioral characteristics can be used to verify a person. Biometrics offer a more secure and user-friendly alternative compared to standard authentication methods such as passwords and personal identification numRead more
Biometrics approach to identification and authentication in which unique biological or behavioral characteristics can be used to verify a person. Biometrics offer a more secure and user-friendly alternative compared to standard authentication methods such as passwords and personal identification numbers, as they rely on innate characteristics that are hard to duplicate.
Types of Biometric Security
Fingerprint Recognition: Based on the unique ridges and valleys present on a person’s fingertips. It also has many applications, such as smartphones, laptops, and security systems.
Facial Recognition: Identifies people by analyzing facial features Its common applications are in security cameras, border control and mobile devices for unlocking and authentication.
Studies the complex patterns in the human eye’s iris. This is a highly accurate method and is commonly utilized in high-security conditions.
Voice Authentication: Verifying identities based on the uniqueness of a person’s voice. It is used in telephony and voice systems.
Hand Geometry: This modality measures the shape and size of the hand, such as finger length and width. You are well versed in building and secure area access control systems.
Behavioral Biometrics: Gait (walking style), keystroke dynamics (typing style), and signature verification These are less common but find use in specific scenarios.
Usage of biometrics based security systems
Security and Access Control: Biometrics are used to protect buildings, data centers, and secure areas, allowing only authorized individuals to access these locations.
Mobile Devices: Smart devices utilize finger patterning and face patterns to secure his devices and verify the transactions.
Financial services: Biometrics are used by banks and financial institutions for secure transactions, account access, and fraud prevention.
Law Enforcement: Crime Detectives & Immigration Split detection of individuals using facial and fingerprint recognition
Time & Attendance: Biometric technology is used to monitor attendance and minimize time fraud in multiple industries.
Some benefits of biometric security systems include.
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In order to answer your question, you must actually state that there is something to even be about. Nylon, a synthetic range of polymers is strong, highly flexible, long-lasting, and used in diverse fields.they're similarly categorized into two main types: Nylon-6 and Nylon 6,6, each of which can beRead more
In order to answer your question, you must actually state that there is something to even be about. Nylon, a synthetic range of polymers is strong, highly flexible, long-lasting, and used in diverse fields.they’re similarly categorized into two main types: Nylon-6 and Nylon 6,6, each of which can be manufactured thru exceptional processes and feature exclusive capabilities.
Nylon 6 Synthesis: Nylon 6 is prepared via the ring-opening polymerization of caprolactam, that’s a cyclic compound with six carbon atoms. Caprolactam is most commonly derived from cyclohexanone or cyclohexanol. Then, under strong temperature and pressure conditions, ring-opening occurs and yields a linear polymer chain. Acid catalyzed polymerization of lactams involves they opening of the lactam ring by strong acids, like sulfuric acid. It produces a polymer with high tensile strength resistance known as Nylon-6.
Creation of Nylon 6,6 → Nylon 6,6 is formed from a condensation polymerization reaction of hexamethylenediamine with adipic acid. Both monomers are then reacted molten with each other at high temperature (around 280°C) under vacuum or inert atmosphere, to remove water, one of the reaction byproducts. The polymer that forms has a regular alternating architecture that is based on the alternating diamine and dicarboxylic acid monomeric units; this architecture provides many reasons for the high mechanical properties of the material, including its high tensile strength, rigidity and thermal properties.
Nylon-6 and Nylon 6,6 Applications In the plastic world, nylon-6 and nylon 6,6 are widely utilized. Thanks to its great dyeability and UV-light resistance, nylon-6 is widely used to produce fibers for textiles, carpets, and industrial fabrics. Because of its high mechanical strength and wear resistance, it has also been employed in engineering plastics used for parts, gears, and bearings in automotive applications.
In contrast, nylon 6,6 is highly sought after in automotive and electronics for its superb mechanical properties and thermal stability. It is used to produce engine parts, airbag fabrics, and electrical connectors. Its high resistance to chemicals and solvents, too, makes it suitable in both industrial machinery and consumer products.
And there you go, the reason it differs in their properties is all thanks to the way Nylon-6 and Nylon 6,6 are produced, which in turn, results in a material so versatile that it finds use in a huge and diverse range of applications; from textiles, to automotive and industrial!
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