Lighting

In this study, we propose a novel approach using the oscillation characteristics of the RMS current as the input to machine learning models, combined with the confident learning technique. Using the oscillation characteristics obtained by taking a discrete Fourier transform (DFT) of the RMS current as model input, we aim to reduce the computational requirements of the machine learning models.

12p viling 11-10-2024 4 1   Download

Dự báo bức xạ mặt trời chính xác là yếu tố kỹ thuật quan trọng trong việc tối ưu hóa hiệu suất các hệ thống điện mặt trời. Bài viết này đánh giá hiệu suất của ba mô hình học máy tiên tiến là Light Gradient Boosting Machine (LightGBM), Long Short-Term Memory (LSTM) và Gated Recurrent Unit (GRU) trong việc dự báo bức xạ mặt trời.

8p vifilm 11-10-2024 7 2   Download

In the precipice of the digital age, organizations are navigating through a transformation that is not only technological but also ecological. In light of the increasing emphasis on sustainability within the business sector, Green Human Resource Management (Green HRM) has surfaced as a crucial approach that incorporates environmental stewardship into fundamental human resource operations.

10p vifilm 11-10-2024 2 1   Download

Low back pain in lumbar spondylosis remains one of the most prevalent conditions, imposing a significant socio-economical burden. Objectives: To compare the effectiveness of low back pain treatment between NSAIDS and electro-acupuncture combined with infrared light (TCM) in patients with lumbar spondylosis.

5p viengfa 23-10-2024 2 1   Download

Early detection of infertile and non-hatchable eggs benefits hatcheries by saving space, reducing costs, and preventing contamination from spoiled eggs. An automated system has been developed to detect and mark non-hatchable eggs efficiently. The system includes a conveyor that moves trays of 100 eggs through a high-power LED light assembly.

5p viengfa 28-10-2024 4 2   Download

The paper sheds light on the adaptation of a literary work reaching the pinnacle of Vietnamese medieval written literature in the context of the regional and Vietnam's particular traditional culture through decoding the creative process of Nguyen Du's The Tale of Kieu - a symbol of Vietnamese national culture. The paper shows how a literary work has become a national literary peak and the image of The Tale of Kieu becomes a symbol of national consciousness, the spirit of cultural nationalization.

8p viengfa 28-10-2024 5 1   Download

In this study, we report on the hydrothermal synthesis of ZnO nanorods and the change in photocatalytic properties with different hydrothermal temperatures in the decomposition of Methylene blue (MB) and Rhodamine B (RhB) under visible light.

11p viengfa 28-10-2024 2 1   Download

In this study, we aim to delineate landslide susceptibility zones within Dien Bien province, Vietnam, leveraging the capabilities of various machine learning models including Light Gradient Boosting Machine (LGBM), K-Nearest Neighbors (KNN), and Gradient Boosting (GB).

19p viengfa 28-10-2024 4 2   Download

Light Gradient Boosting Machine is a new machine learning technique developed by Microsoft corporation which has been proposed in the present study to determine the CBR of stabilized expansive soils. Model performance of the ML model are evaluated by different criteria such as correlation coefficient R, root mean square error RMSE and mean absolute error MAE.

8p viengfa 28-10-2024 4 2   Download

Photoluminescent composites consisting of a photoluminescent material dispersed in a suitable matrix have been applied in many applications, such as light-emitting diodes, solar concentrators, and anticounterfeiting inks. In this study, we have demonstrated a one-step method to prepare homogeneous composites by inducing the formation of in-situ photoluminescent centers in a stable matrix.

8p viaburame 14-03-2025 0 0   Download

Trong nghiên cứu "Mô hình hóa và mô phỏng ảnh hưởng của hộp số hai tốc độ đến thông số hoạt động của động cơ và pin ô tô điện", một mô hình đánh giá ảnh hưởng của hộp số hai tốc độ đến hoạt động của động cơ và trạng thái sạc/xả của pin được đề xuất và xây dựng trong môi trường Matlab/ Simulink. Các mô phỏng được thực hiện theo chu trình lái xe tiêu chuẩn WLTC (Worldwide Harmonised Light Vehicles Test Cycle) của quy trình kiểm tra đồng bộ xe hạng nhẹ toàn cầu WLTP (Worldwide Harmonised Light Vehicles Test Procedure).

8p tuongmotranh 18-03-2025 16 1   Download

The materials with a spinel structure have gotten some attention for their resistance to oxidizing/reducing agents and their application in many fields such as pigments, refractory, electronic engineering, magnetism, and energy storage materials.

8p vifilm 11-10-2024 2 1   Download

This study delves into the potential of digital math games on mobile devices to enhance the learning experience of primary school children, aiming to instill a sense of hope and optimism in Vietnamese parents. In light of the increasing prevalence of digital games and concerns about screen time and game addiction, the research examines these educational tools' perceived benefits and drawbacks.

14p viling 11-10-2024 3 1   Download

That Van Gogh’s works have been chosen for tech-infused exhibitions is influenced by three main factors. Firstly, the artist’s intense use of colors and vigorous brushstrokes makes them well-suited to large-scale projection, creating interactive and appealing showcases. His emotion-filled and expression-driven style resonates profoundly with audiences, generating strong emotional responses that are even maximized in an immersive context.

11p vihyuga 20-02-2025 1 1   Download

This paper presents the development and performance evaluation of a novel micro LED display achieved through innovative planarization and electrodeless shielding techniques. The study focuses on achieving uniform forward voltages across the entire display panel, ensuring consistent performance and optimal light output.

6p viyamanaka 06-02-2025 7 1   Download

This study explores the perceptual color differences of 3D objects in real and virtual environments to improve color accuracy in civil engineering applications. Experiments were conducted using real-world objects under controlled D65 lighting and virtual objects displayed on LDR and HDR monitors.

9p viyamanaka 06-02-2025 3 1   Download

This paper presents a comprehensive investigation into the optimization of exciplex emission in organic light-emitting diodes (OLEDs). Through a systematic exploration of various combinations of hole-transporting materials (HTMs) and electron-transporting materials (ETMs), we elucidate critical factors influencing exciplex formation and its impact on OLED performance.

5p viyamanaka 06-02-2025 1 1   Download

Automotive signal lights play a crucial role in ensuring road safety and communication between drivers. This paper introduces a novel approach to automotive signal light design that leverages Light Shaping Diffuser (LSD) technology to improve light distribution uniformity, reduce glare, and enhance responsiveness during dynamic driving conditions.

8p viyamanaka 06-02-2025 2 2   Download

This study optimizes ring remote phosphor structures for laser-based white lighting applications; it delves into the pursuit of high-brightness and high-luminance lighting solutions that blue laser diodes (LDs) hold promising potential.

5p viyamanaka 06-02-2025 5 2   Download

This paper is about a new microstructure design that uses a Laser Diode (LD) light source for Liquid Crystal Displays (LCDs). It shows an important step forward in display technology. Regular Thin-Film Transistor LCDs often have efficiency problems because of multilayer optical films, causing loss of light and reduced performance.

11p viyamanaka 06-02-2025 4 2   Download