Ayesha Binte Mostofa

ML Algorithms || FNN || PCA and EM

1. Implemented matrix transformation, eigen-value decomposition, image reconstruction using singular value decomposition.
2. Implemented adaboost algorithm with logistic regression on three classfication datasets with exploratory data analysis and preprocessing techniques.
3. Implemeted FNN from scratch | Relu, Softmax, tanh Activation | Dropout Layer | L1, L2, Binary Cross Entropy Loss | Report
4. Implemented PCA & clustering with EM algorithm on gaussian mixture models from scratch.

Intelligent Solvers for Puzzles

1. N-Puzzle Solver: Implemented A* heuristic (Hamming Distance, Manhattan Distance)
2. Latin Square Solver: Implemented csp value ordering (Forward Checking, Simple Backtracking) | Report
3. Exam Scheduling: Used local search (Largest Enrollment, Saturation Degree - DSatur Algo, Largest Degree, Random Ordering, Kempe-Chain, Pair-Swap) | Report
4. Minesweeper Solver: Utilized inference techniques (Implemented Random Moves, Safe moves, Discarded Diagonal Cells as neighbours)

Hardware | 8086 Assembly | Microprocessor | Logisim

1. Implemented 4-bit Arithmetic logic unit (ALU) with LED and ATmega32 desgining the soft circuit in Logisim | Flags : Carry, Sign, Overflow, Zero flags | Operation : Add, Add with carry, AND, Transter A, Increment A, XOR | Soft Circuit Diagram | Hardware Diagram
2. Implemented 32-bits Floating Point Arithmetic Unit (FPU) with ATmega32 and Logisim | 1 Sign bit, 10 exponent bits, 21 Fraction bits (Lowest bits) | The numbers are in normalized form. There are two flags U (underflow) and O (overflow) which are set if the result is too small or too large to be represented in the format | Report | Flowchart
3. Implemented a 4-bit MIPS Processor : Arithmetic Logic Unit (ALU), Control Unit and Datapath. For the simulation, we have used 1-RAM, 2-ROMs, 2-Shifters and 3-ALUs but in hardware implementation, we have used ATMega32 since we can program ATMega32 to add, subtract and store data | Report | Codes

8086 Assembly | Microprocessor | Health Monitoring System

1. Implemented assembly language programs including addition, subtraction, multiplication, division, and string operations.
2. Implemented microprocessor-based projects using Atmega32 :
a) Use of Polling for Digital IO.
b) Basic Bicolor LED matrix control with ATmega32: static, flash, and rotating display,
c) ADC and LCD module with ATmega32 | Youtube Video
3. Developed a Health Monitoring System using Arduino, pulse-oxymeter, DHT11 and GSM Module for covid patients.
4. Proteus Simulation for designing circuits with various tools.
Assembly and MicroController | Proteus Simulation Code Health Monitoring Project Code | Report

Implementing an OS || IPC

1. Explored bash scripting
2. Implemented synchronization using pthreads :
Barber Shop, Master Worker, Read-Write Lock, Zemaphore
3. Implemented custom system calls : Trace & System Info to incorporate command line functionalities and lottery scheduling algorithm into existing xv6 pedagogical operating system.
4. Implemented copy-on-write paging mechanism for xv6 memory management.
5. Documented Git Commands.
All Code

A Simple Compiler

1. Symbol Table : Stored info of occurance of entities : identifiers, objects, function names etc in CPP. | Code
2. Lexical Analysis : Tokenized the input source code interacting with symbol-table. | Code
3. Syntax and Semantic Analysis : Constructed bottom-up parse tree by shifting and reducing the tokens generated by lexer in Bison and Yacc. | Code
4. Intermediate Code Generation : Generated intermediate assembly code from the previous offlines outputs for the input source code. | ICG | ICG with Optimization

Cryptography || Security Vulnerabilities || MISP

1. Implement public key cryptography system, AES, with Diffie Hellman and RSA key exchange algorithms interconnected via client-server socket.
2. Explored pedagogical malware (virus and worm) functionalities within docker containers and demonstrate buffer overflow attacks.
3. Experiment with firewall configurations
4. Implemented and demonstrate the features of MISP, an open-source Threat-Intelligence Tool | MISP Report
5. Implemented multi-modal Steganography and extracted hidden messages from stego objects | Steganography Code

TCP Cubic-Fit || VLAN & Network Simulation

1. setup Virtual Local Area Network (VLAN) using Cisco Packet Tracer and configure network components (Switch, Router, Trunk, NAT, PAT, ACL) | CheatSheet
2. We also implement a simple multi-threaded file web server using Java socket programming.
2. We then use Network Simulator 2 (NS2) to simulate wired and wireless network topologies with varying protocols across different network layers.
4. We experiment with WireShark to analyze network traffic.
5. Finally, we experiment with TCP Cubic-FIT simulation in NS2 and improved it || Report | Code
All Code

Ray Tracing & Raster based Pipeline || OpenGL Projects

1. Ray Tracing: Implemented ray tracing for various shapes (cube, sphere, pyramids) with multiple perspectives and light sources, including a textured infinite checkerboard using a BMP file.
2. Raster-Based Pipelines: Developed a raster-based graphics pipeline in OpenGL covering transformations, clipping, scan conversion, and Z-buffer.
3. OpenGL Projects: Created projects such as an analog clock, transforming an octahedron into a sphere, and animating sphere and cube motions.

ParkCar : Online Parking Management

We developed a mobile application for parking management. The app allows users to book parking slots, pay for parking, and view parking history with various searching facilities. The app also includes a feature for parking lot owners to manage their parking lots and view parking history.
We designed BPMN, Mock-UI, ERD, Class, Collaboration, Sequence and State Diagram. Later, we developed a one module of the project. We have deployed our Database & Server in Render.
Diagram | Module Code

E-Pathsala : Online Educational Platform

An Online School inspired by Coursera as Covid hit the world. Here, 3 types of users can be created : Student, Teacher & Admin. The student can enroll themselves in different courses, test themselves through quizes. Teacher can create courses, add lessons, create quizes. Admin can manage all the users, courses, lessons, quizes.
Code
ERD

Your Doctor : Online Hospital Management

An Online platform where a patient can book appointment with doctors, order ambulances and check health by nurses. Chatting service with doctors or nurse is also included. History will be saved and patient rate the services. And a hospital can see the rating and appoint nurse for the checkup. Online transaction facility is also included.
Code
Mock UI (Full Demo Look)