The proposed work addresses the imperative of safeguarding sensitive information through a dual-security approach of encryption and steganography. Employing the Advanced Encryption Standard (AES) for the first level, and bitmap graphics as video frames with steganography techniques in the second, it achieves heightened data protection and imperceptibility, validated through superior statistical quality assessments. It advocates combining AES encryption with Fisher-Yates-based randomization for h...

Information and communication theory and algorithms 

West Lake is renowned worldwide for its picturesque scenery and profound cultural heritage. This paper uses two famous scenic spots, Leifeng Pagoda and Broken Bridge, as examples to explore the mathematical culture embedded in the landscapes of West Lake. We analyze not only the architectural structure and geometric aesthetics of Leifeng Pagoda and Broken Bridge but also employ mathematical knowledge to understand these structures. This includes using the theorem of similar triangles to measure ...

Applied Statistical Mathematics  Geometry  Mathematics 

This article explains how the nation’s rise paved the way for nationalism’s development and how digital technologies significantly contributed to the global rise of nationalism. Globalization and the industrial revolution play an important role in digital development worldwide, shaping people’s ideas about adopting new technology to connect with others. People can form or mobilize a team within a group or nation through social media, websites, applications, and other technology tools. Because of...

Sociology 

Carbohydrate antigen 19-9 (CA 19-9) is a tumour-associated biomarker predominantly linked to pancreatic and colorectal cancers. Elevated serum levels of CA 19-9 in lung adenocarcinoma are rare, with few cases documented in the literature. Herein, we present two cases of metastatic lung adenocarcinoma with markedly elevated CA 19-9 levels, initially leading to a diagnostic suspicion of a pancreatic malignancy.

Respiratory Medicine 

With the acceleration of urbanization and the rapid development of modern agriculture, the quality of urban groundwater in China has deteriorated significantly, affecting regional economic and social development. Due to the concealed and harmful nature of groundwater pollution, remediation efforts are urgently needed. Despite some existing research in China, technical application experience is limited. This study aims to develop an intelligent control system for in-situ groundwater reme...

Nuclear Chemistry 

The progress of humanity has always been intricately linked to trade, albeit, language barriers constitute a substantial impediment to facilitating global business and trade. This research aims to assess the impact of major foreign languages on business and international trade development. The results reveal that English, Chinese, and French languages significantly and positively influence trade. English is crucial in conducting business, and proficiency in foreign languages is a vital determina...

Business Communication  Linguistics 

Numerical simulations of the impact behavior of a single layer of 2D woven fabrics at low-velocity are presented. The configurations considered for the studies are three different architectures of 2D woven fabrics (plain weave, twill weave and satin weave) made of Kevlar and UHMWPE fibers. The numerical models are formulated and used to investigate the ballistic impact behavior of 2D woven fabrics when the fabrics are clamped along all four edges (4BC) or two edges (2BC). In this paper, the ball...

Composite Material 

Advancements in technology have exposed significant vulnerabilities in academic credentialing systems; they are costly, time-consuming, and susceptible to sophisticated forms of fraud. This research proposes an innovative solution that can be implemented to make an almost complete overhaul of the traditional methods used to verify educational documents much faster, more secure, and more credible. In contrast to popular approaches that involve manual checks or third-party services, we propose a s...

Information and Communication: Security, Privacy, and Trust 

1) Fermat has proved that x⁴ y⁴=z²   has no positive integer solution, and in 2011, J. Cullen [1] reported that x,y,∈{0,1,...,10⁷}, x⁴ y⁴ 1 is not a square greater than 1, and conjecture:x⁴ y⁴ 1≠z²,z∈{2,3,...},x,y,∈{0,1,...}. On May 15, 2021, Sun Zhiwei [2] proposed that neither x⁴ y⁴ 1(x,y,∈N) is a perfect power based on Cullen’s conj...

Integral Equation  Number Theory 

At present, the portable radioactive aerosol measuring instrument prototype mainly adopts the cumulative measurement method, which requires personnel to regularly replace the filter, which is not conducive to online long-term measurement. Therefore, this paper designs a portable radioactive aerosol measuring instrument prototype that is easy to carry, high-precision, low-power, and small in size. Firstly, the internal and external structures were miniaturized. Secondly, low-power design was adop...

Nuclear Chemistry