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Showing posts from October, 2025
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Simple Java Program: Adding Two Numbers from User Input In this post, I’ll walk you through a simple Java program that takes two integer inputs from the user and computes their sum. This exercise is perfect for beginners to practice variables, user input, and basic arithmetic in Java. Pre-requisites Apache NetBeans IDE 23 Java 22.0.2 (Java HotSpot™ 64-Bit Server VM 22.0.2+9-70) System: Windows 11 version 10.0 (amd64), UTF-8, en_US This ensures the program compiles and runs as shown. Code Overview package com.mycompany.ieeextreme001; import java.util.Scanner; public class IEEEXtreme001 { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.println("Hello World-IEEEXtreme!"); // Asking for the first integer System.out.println("Supply a"); int a = input.nextInt(); // Asking for the second integer System.out.println("Supply b"); ...
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🌀 How I Learned to Use a Haier Washing Machine in Korea (and Save Money Too) Doing laundry in a new country taught me more than I expected! Below I share how I learned the Haier washer buttons, what “탈수” means, and a simple money-saving routine. My Haier top-load washer — perfect for spin-only cycles after hand washing. Introduction When I first started using a Haier washing machine in Korea , all the buttons and labels were in Korean and it looked confusing. After a few experiments I learned the exact steps to use the spin-only function (탈수) — a quick, energy-saving method I now use almost every time. 1️⃣ Understanding the Machine Side view of my Haier washer — simple and compact for small laundry rooms. This is a common Haier top-load model. The important ...

🔹 Is Qualitative Data Always Primary Data?

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🔹 Is Qualitative Data Always Primary Data? Insights from Stroke Care and IoV Research Understanding stroke care isn’t just about what happens — it’s about why it matters . In our recent research, we use a mix of sensor data , patient feedback , and AI-driven IoV analytics to capture the full story ( Saad, Jamshed, Adedamola, Nauman, & Kim, 2025 ). 📄 Click here to view the full paper 🧠 Primary vs. Secondary Data Primary data → Data you collect yourself (interviews, observations, or IoV sensor readings). Secondary data → Data collected by someone else (published reports, case studies, open datasets). For example, if we interview stroke patients or observe IoV interactions , that’s primary qualitative data . But if we analyze existing case reports or published interviews , that’s secondary . “The last decade has witnessed considerable growth in the development of qualitative research... yet this is an area on which most researchers require some guid...

Understanding OFDM, CDMA, and Orthogonality

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Understanding OFDM, CDMA, and Orthogonality Ever wondered how Wi-Fi, LTE, and 5G send lots of data without signals clashing? This short post explains the difference between OFDM and CDMA, the history of CDMA, GPS applications, and why orthogonality is so important. Narrowband vs Wideband Signals ✅ Narrowband (OFDM) Think of a highway. Instead of all cars (data) fighting for one lane, OFDM splits the channel into many small lanes called subcarriers . Each subcarrier carries a small portion of the data. Example: A 20 MHz Wi-Fi channel can be split into 64 subcarriers. Each subcarrier is ~312.5 kHz wide — that’s “narrowband.” Advantage: Tight packing of subcarriers with low interference when designed using orthogonality. ⚖️ Wideband (CDMA) CDMA spreads a user’s signal across the entire channel using a unique code. Imagine one car using the whole highway but marked by a special tag so receivers can extract it from the...