Abstract: A new time domain modeling method for dc–dc switching power converters is introduced: conversion function theory of dc converters. This method is based on the concept of “wanted variables” ...

Microsoft's spreadsheet program can do way more than you might realize. These are the hacks and tricks you need to know.

TEXTBEFORE and TEXTAFTER are a few more of my favorite Excel functions to clean messy spreadsheets. Excel's newer text ...

同事用VLOOKUP慢？1键秒杀他！5秒搞定数据匹配，连公式都不用背！ 核心价值点：不用苦哈哈手动核对，不用死记硬背函数，1个操作让查询速度飙升，连隔壁工位老王都来偷师！ 🔹 1. 【VLOOKUP卡成PPT？】你还在用"老牛拉车"式查询？ 场景还原：周一早上全组等着 ...

A claim about White House Press Secretary Karoline Leavitt dismissing the role of co-equal branches of government circulated widely on social media (Anna Moneymaker/Getty Images) WASHINGTON, DC: A ...

Will Power spoke recently with Roger Penske about the sides' continued contract talks, but Power said he won't know his fate at Team Penske until after Nashville. Should Power not return to Team ...

Will Power spoke recently with Roger Penske about the sides' continued contract talks, but Power said he won't know his fate at Team Penske until after Nashville. Should Power not return to Team ...