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2025-01-282025-01-28896 words 5 mins

Summary of the First Semester of Junior Year

Summary of the First Semester of Junior Year
2024-12-262024-12-2637 words 1 min

The East is Red

He fell asleep.
2024-11-132024-11-13496 words 3 mins

Because spring once came

——This poem is dedicated to the Polaris in my life
2024-10-082024-10-081011 words 5 mins

Five Poems from a Journey to Southern Shanxi

Preface During the National Day holiday, I traveled through Shanxi with Black Myth: Wukong, visiting three cities in southern Shanxi—Jincheng, Linfen, and Yuncheng—and composed five poems to briefly document the journey.
2024-09-152024-09-15150 words 1 min

Mid-Autumn Festival, give your family a call.

“Mom, will there really be girls who like me in this world?” “Of course! When I first met you, I was only in my twenties too.”
2024-09-102024-09-102037 words 10 mins

Probability Theory and Mathematical Statistics

Preface First Edition Preface [[2024-09-14]] Today the makeup exam finally ended. I heard the original exam directly reused past papers. These past few days I practiced three sets of “XDU original papers” (from 2021 and two from 2023) found online. I did the 2021 paper in the morning, …
2024-09-092024-09-0984 words 1 min

Leaning on railings, I hear the rain rushing; For my homeland my heart is aching.

“I have a dream that one day, the brilliant sunlight will pierce through the dark forest.”
2024-09-072024-09-071093 words 6 mins

Windows Customization Journey

Preface As the saying goes, the pinnacle of customization is the default.
2024-09-042024-09-041156 words 6 mins

Digital Signal Processing

Fundamental Concepts of Digital Signal Processing Signal Classification Continuous-time signal: Analog signal, continuous in the time domain. Discrete-time signal: Continuous in amplitude but discrete in time. Amplitude-discrete signal: Discrete in amplitude but continuous in time. Digital signal: …
2024-09-022024-09-023216 words 16 mins

Fundamentals of Aerodynamics

Fundamentals of Hydrostatics Gas Properties Compressibility Bulk Modulus Definition: The increase in pressure required to produce a unit relative change in volume. $$ E=-\frac{dp}{dV/V} $$For a given mass of gas, volume is inversely proportional to density, i.e., $$ \frac{d …