The Microsoft Word training held on July 9-10, 2025, at SMK Ibrahimy 1 Sukorejo provides effective results by increasing the effectiveness of learning in the form of mastery of digital software. What is successful in this training is that it can train students with document processing skills in Microsoft Word to make it easier to complete assignments at school and prepare for technological knowledge in the world of work later. In training with an interactive and practical approach method, it increases students' creativity in making assignments or making proposals and other documents with good interaction in learning Microsoft Word. In terms of mastering its own features, making students with the features that have been given by this training can understand well, making students more confident in using Microsoft Word, and being able to compete in the field of school, and the world of work
 

This study explores the role of mathematics in economics, focusing on the application of set theory and market equilibrium models. (1) Set theory provides a framework for organizing economic data and analyzing relationships between variables, such as market segmentation and consumer behavior. Meanwhile, market equilibrium is determined by solving demand (Qd = a?bPQ_d = a - bPQd?=a?bP) and supply (Qs = c+dPQ_s = c + dPQs? = c+dP) functions, where their intersection defines the balance between supply and demand. (2) The research demonstrates how mathematical tools enhance the understanding of economic dynamics, offering precision in modeling and decision-making. The study underscores the significance of mathematics in optimizing economic analysis and contributing to effective policy formulation. This integration of theoretical mathematics and practical economics highlights its essential role in addressing real-world economic challenges.

Hydroquinone is a compound that is often used in skin whitening beauty products. According to BPOM 2007, the use of hydroquinone at levels above 2% can cause skin disorders, namely hyperpigmentation which can lead to skin cancer. This research was conducted to qualitatively analyze the hydroquinone compound found in skin whitening soap which does not have a BPOM number. The aim of this research is to determine the presence of hydroquinone compounds contained in skin whitening soap samples and to determine the differences in Rf values ??resulting from the comparison of the concentrations of the mobile phase used. Qualitative analysis was carried out by calculating the Rf value of paper chromatography using a comparison of variations in mobile phase concentration, namely 50% ethanol: chloroform (1: 1) and 90% ethanol: chloroform (1: 1). The analysis results show that the standard Rf value of hydroquinone from the eluent of 50% ethanol and chloroform is 0.46, where this Rf value is the same as the Rf value from sample number 5, namely 0.46. Meanwhile, the Rf value using 90% ethanol and chloroform eluents in sample No. 5 is 0.67, which is not the same as the standard Rf value, namely 0.56. Of the whitening soap samples, 1 sample showed a positive result containing hydroquinone.

Peningkatan jumlah pekerja lepas di berbagai bidang industri, mendorong perlunya kajian mengenai perlindungan hukum yang diberikan kepada mereka dalam regulasi ketenagakerjaan setempat. Meski pekerja lepas memberikan fleksibilitas dan keuntungan bagi perusahaan, status ketenagakerjaan mereka yang khas seringkali membuat mereka rentan terhadap eksploitasi dan kurangnya jaminan perlindungan hukum. Penelitian kualitatif ini bersifat yuridis normative, deskriptif dan cenderung menggunakan analisis dari data berbentuk narasi, cerita detail, ungkapan, dan informasi maksud dengan tujuan mengetahui dan menemukan fakta-fakta dan data yang dibutuhkan untuk mengidentifikasi tantangan dan peluang dalam mengimplementasikan perlindungan hukum bagi pekerja lepas. Hasil penelitian ini diharapkan dapat memberikan rekomendasi kebijakan yang komprehensif dan solusi praktis untuk meningkatkan perlindungan hukum pekerja lepas, menjadi acuan bagi pemerintah daerah dan pemangku kepentingan terkait, serta berkontribusi pada diskusi akademis dan praktik mengenai perlindungan hukum pekerja lepas di era ekonomi digital yang terus berkembang.

Human resource management must be carried out professionally in order to produce competent human resources to improve the performance of individuals and companies. The role of a leader is very important in improving employee performance, because effective leadership provides direction to the efforts of all workers in achieving organizational goals. One of the appropriate leadership styles in dealing with change and addressing the proactive nature of employees is a transformational leadership style that brings change through a clear vision by involving subordinates in every activity. The right leadership style will make employees respectful at work and willing to contribute their best. With the implementation of the transformation leadership style in the company, it will create maximum employee performance which will affect the company's progress.