| Chapter 9 Virtual Memory |
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VM: address space, divided into fixed size pages (4KB standard); physical mem serves as a cache for these pages. A page table (which is per process) maps virtual pages to physical pages, ort marks as invalid/unmapped Address translation: VA = [ VPN | VPO], MMU looks up VPN in the page table to get a page table entry. if valid it resolves to the PPN = [ PPN | VPO ] Page Fault: Occurs when a ptr valid bit is 0. triggers OS fault handler, picks victim physical page, |
A model is a simplified representation of a real-world system developed to understand, analyze, or predict its behavior. A model contains only the important characteristics of the actual system and ignores unnecessary details.
Models can be classified into several types. A physical model represents a system physically, such as a prototype of a machine. A mathematical model represents the system using equations,
📚 Core Study Notes by Unit
UNIT I: Fundamentals of Object-Oriented Programming & Java Basics
* Basic Concepts of OOP: The fundamental pillars are Classes, Objects, Encapsulation (hiding data), Inheritance (reusability), Polymorphism (one interface, multiple methods), and Abstraction.
* Java Evolution & Features: Java is distinct from C/C++ because it is platform-independent (Write Once, Run Anywhere), robust, secure, and uses both a compiler and an interpreter. It does not support...
a) Define Machine Learning: Machine Learning is a subset of Al where a system learns patterns from data and makes decisions or predictions without being explicitly programmed for every task.
b) What is over-fitting in Machine Learning?: Over-fitting is when a model learns the training data too well, including noise. It performs very well on training data but poorly on new unseen data
c) What is underfitting?: Underfitting is when a model is too simple to capture the underlying pattern in the data.
Cancer is a serious disease characterized by the uncontrolled growth and spread of abnormal cells in the body. It can affect any part of the body and is often named according to the organ or tissue where it originates, such as breast cancer or lung cancer.
Causes (Etiology)
Genetic mutations in cells
Hereditary factors (family history)
Viral and bacterial infections
Physical agents such as radiation and UV rays
Chemical carcinogens and toxic substances
Smoking and tobacco use
Alcohol consumption
XPATH
/a/b=fils;//a=partout;@x=attr;.=courant;text()=texte;A[B]=filtre;not(),and,or
[A]=existe;[not(A)]=aucun
A=B: existe paire egale;A!=B: existe paire differente;ATT A!=B != not(A=B)
>=2 valeurs diff: f/@c!=f/@c
>=3 dont rouge: f/@c="rouge" and f[@c!="rouge"]/@c!=f[@c!="rouge"]/@c
Doublon:f[@x=following-sibling::f/@x]
Garder 1:f[not(@x=following-sibling::f/@x)]
Unique global:x[not(@a=following::x/@a)]
Absent avant:not(f/@x=preceding-sibling::p/f/@x)
Absent apres:not(f/@x=following-sibling::p/f/@x)
RECTO
XPATH XSLT CQ / UCQ
/a/b fils directs <xsl:template match="/"> q: Ans(x)<-R(...),S(...)
//a partout <out> HOMOMORPHISME h:q1->q2
@x attribut ; . courant <xsl:apply-templates
Answer:
Computer Integrated Manufacturing (CIM) is a manufacturing approach in which computers are used to integrate and control major activities involved in product development and manufacturing. It connects design, planning, production, material handling, quality control and management through a common information system.
The major elements of CIM include Computer-Aided Design (CAD), Computer-
1. जपा प्रमुख कर्म: आर्तवजनन, केश्य Family: Malvaceae Latin Name: Hibiscus rosa-sinensis पर्याय: जपा, जवाहकुसुम, ओड्रपुष्प, रुद्रपुष्प, रक्तपुष्प Morph.: क्षुप Chem. compo.: Cyclopropanoids, Methyl sterculate, Flavonoids गुण: लघु, रूक्ष रस: कषाय, तिक्त विपाक: कटु वीर्य: शीत