https://elib.vku.udn.vn/handle/123456789/5064 2026-09-22T18:18:18Z https://elib.vku.udn.vn/handle/123456789/7683 Title: An Experimental Study of Walrus Optimization-Based Deep Learning Models for Software Effort Estimation Authors: Nguyen, Duy Khanh; Dao, Khanh Duy; Dang, Thi Kim Ngan; Ha, Thi Minh Phuong; Huynh, Ngoc Tho Abstract: Software Effort Estimation plays a pivotal role in project planning, resource allocation, and cost management within the software development life cycle. This study investigates the integration of deep learning models Convolutional Neural Network, Recurrent Neural Network, Long Short-Term Memory, Bidirectional Long Short-Term Memory and Multilayer Perceptron with the Walrus Optimization Algorithm for hyperparameter tuning. By using five standard SEE datasets including China, Kemerer, Kitchenham, Maxwell, Miyazaki94, we assess the model's performance using multiple evaluation metrics: Mean Squared Error, Mean Absolute Error, Coefficient of Determination (R2), Mean Magnitude of Relative Error, and Prediction Accuracy at 2 5 % (Pred(25)). Experimental results reveal that LSTM and its variant consistently outperform other models in terms of MSE, MAE, and R2 in most datasets, demonstrating the advantage of sequence-based learning for SEE. The proposed framework offers a replicable methodology for applying evolutionary optimization to deep learning in SEE. Description: 2025 RIVF International Conference on Computing and Communication Technologies (RIVF); pp: 1-8 2025-12-01T00:00:00Z https://elib.vku.udn.vn/handle/123456789/7682 Title: Applying Practical Approaches in Teaching General Physics – Mechanics to Enhance Students’ Engagement At the Vietnam–Korea University of Information and Communication Technology Authors: Huynh, Thi Thanh Tuyen Abstract: This article introduces one of the teaching methods that is very meaningful in enhancing the students' positivity: using practice, practical questions to connect the lesson content with life to stimulate students' interest in the subject of General Physics. Through the article, the author presents the use of practical problems, practical questions in the Applied Mechanics section in the teaching of General Physics, helping students see the practical benefits of studying Physics to develop curiosity, stimulate thinking, exploration, improve self-study, self-thinking of students at the Vietnam - Korea University of Information Technology and Communications. Description: Research Inventy: International Journal of Engineering And Science; Vol.15, Issue 12; pp: 12-18 2025-12-01T00:00:00Z https://elib.vku.udn.vn/handle/123456789/7681 Title: Legal Framework for Electronic Labor Contracts in Enterprises Authors: Nguyen, Thi Phuong Thao Abstract: The rapid growth of digital technologies has driven the digitalization of human- resource management, leading to the increasing use of electronic labor contracts in enterprises. Vietnamese law recognizes the legal validity of electronically concluded labor contracts; however, several legal challenges remain regarding electronic signatures, evidentiary value, data integrity, personal data protection, and the parties’ responsibilities in dispute resolution. This article analyzes the current legal framework governing e-labor contracts, examines practical issues in enterprise implementation, and proposes recommendations to enhance legal certainty and compliance in the digital labor environment. Description: Research Inventy: International Journal of Engineering And Science; Vol.15, Issue 12; pp: 08-11 2025-12-01T00:00:00Z https://elib.vku.udn.vn/handle/123456789/7680 Title: Verb Form Errors Made by Non-English Major University Students in Vietnam Authors: Tran, Thi Thuy Lien Abstract: This research aims at examining the most common types of errors in using English verbs made by students in EFL (English as a foreign language) classes. Hereby, it is conducted to help students become better aware of using English verbs and contribute to creating a positive learning atmosphere at school. In addition, this current study aims to make some recommendations to help EFL teachers in schools have a more holistic view of students’ mistakes so that they can apply more effective error correction methods. In order to achieve its objectives, the researcher intentionally asked students to write a letter to send to her in the first lesson of the semester from which verb-related errors that students made were identified. After analysing the errors, suggestions are proposed to help students overcome and limit errors. The research is conducted based on the viewpoints of modern linguists. The main method used is qualitative and data were collected from students’ writing and classroom observation. 2025-12-01T00:00:00Z