https://ojs.acad-pub.com/index.php/DT <p><i>Drone Technology</i>&nbsp;(DT) is a peer-reviewed, open-access journal focused on advancing unmanned aerial systems (UAS) and their diverse applications. It provides a platform for researchers, engineers, policymakers, and industry professionals to share insights, explore innovations, and address challenges in this dynamic field, fostering collaboration to drive innovation and sustainable solutions.</p> Academic Publishing Pte. Ltd. en-US Drone Technology <p>Authors contributing to this journal agree to publish their articles under the <a href="http://creativecommons.org/licenses/by/4.0" target="_blank">Creative Commons Attribution 4.0 International License</a>, allowing third parties to share their work (copy, distribute, transmit) and to adapt it <span lang="EN-US">for any purpose, even commercially, under the condition that the authors are given credit.</span> With this license, authors hold the copyright.</p><p><img src="https://esp.apacsci.com/public/site/images/reviewer/OIP-C.jpg" alt="" /></p> https://ojs.acad-pub.com/index.php/DT/article/view/2394 <p>test</p> Copyright (c) 2024 2024-12-27 2024-12-27 1 1 https://ojs.acad-pub.com/index.php/DT/article/view/2396 <p>This paper focuses on obtaining the exact solution of the functional differential equation: <math><msup><mi>y</mi><mrow data-mjx-texclass="ORD"><mi data-mjx-alternate="1">′</mi></mrow></msup><mo>(</mo><mi>t</mi><mo>)</mo><mo>=</mo><mi>a</mi><mi>y</mi><mo>(</mo><mi>t</mi><mo>)</mo><mo>+</mo><mi>b</mi><mi>y</mi><mo>(</mo><mo>−</mo><mi>t</mi><mo>)</mo></math> subject to the initial condition <math><mi>y</mi><mo>(</mo><mn>0</mn><mo>)</mo><mo>=</mo><mi>λ</mi></math>. The standard series approach is applied to obtain the solution in a power series form. The convergence issue is addressed. In addition, the exact solution is established in terms of elementary functions such as hyperbolic and trigonometric functions. The exact solutions of some special cases, at particular choices of a and b, are determined. The obtained results may be introduced for the first time regarding the solution of the current problem.</p> Xing Li Copyright (c) 2024 2024-12-27 2024-12-27 1 1 https://ojs.acad-pub.com/index.php/DT/article/view/2397 <p>This paper discusses the fusion of traditional color and design elements, focusing on the influence of propaganda art on mobile application interface design during the Cultural Revolution. Through the analysis of the propaganda paintings during the Cultural Revolution, the unique use of traditional colors in political propaganda and its visual effects are revealed, and the civilization and innovation of these traditional design elements in contemporary interface design are discussed.</p> Zhou Jiang Lingling Guo Zhiqun Ren Xiangting Jiao Copyright (c) 2024 2024-12-27 2024-12-27 1 1