Lodoiravsal Choimaa

• PhD
• Professor (Associate) at National University of Mongolia

This paper analyses the types of innovation intermediaries that have emerged in Mongolia and investigates their roles within the information technology sector of the country. The study finds that diverse innovation intermediaries have emerged, and the majority of the intermediaries are non-sector specific, with only a few specializing in a single i...

There are a lot of methods for the stabilization of quadcopters and the newest are based on AI. A neural network is a simplified model that imitates the human brain's processes. In the research paper, we present a neural network control model for quadcopter stabilization. A single hidden layer network model was estimated to investigate the dynamics...

Background: To conduct a rapid preliminary COVID-19 screening prior to polymerase chain reaction (PCR) test under clinical settings, including patient’s body moving conditions in a non-contact manner, we developed a mobile and vital-signs-based infection screening composite-type camera (VISC-Camera) with truncus motion removal algorithm (TMRA) to s...

Transparent objects are one of the most common objects in everyday life. The poses of these objects must be estimated to pick and manipulate such objects. However, recognizing and estimating the poses of transparent objects is still a challenging task in robot vision, even after the emergence of 3D sensors. It is difficult to detect transparent obj...

Grasping and manipulating transparent objects with a robot is a challenge in robot vision. To successfully perform robotic grasping, 6D object pose estimation is needed. However, transparent objects are difficult to recognize because their appearance varies depending on the background, and modern 3D sensors cannot collect reliable depth data on tra...

Background To increase the consultation rate of potential major depressive disorder (MDD) patients, we developed a contact-type fingertip photoplethysmography-based MDD screening system. With the outbreak of SARS-CoV-2, we developed an alternative to contact-type fingertip photoplethysmography: a novel web camera-based contact-free MDD screening sy...

This paper presents a synthetic data generation method using a robot to create a substantial dataset. One important task in the field of learning-based recognition is to collect large amounts of high-quality training data. To increase the training dataset, many researches have used data augmentation methods. In musical recognition, data augmentatio...

In recent years, many researchers have shown increasing interest in music information retrieval (MIR) applications, with automatic chord recognition being one of the popular tasks. Many studies have achieved/demonstrated considerable improvement using deep learning based models in automatic chord recognition problems. However, most of the existing...

Mouse tracking serves as an alternative to eye tracking in measuring the learning process in education because of its affordability. Moreover, mouse tracking does not require extra hardware, as in the case of eye tracking, because it is a feature in personal computers by default. Therefore, it is possible to implement mouse tracking in a massive op...

Due to accelerated urbanization since the 1950's, most of the Mongolian population, or about 68%, live in urban areas. The systematic understanding of urban expansion is a crucial clue for urban planning and sustainable land development. Therefore, in this paper, we used the Markov chain model and an Artificial neural network to simulate and predic...

One of the objectives of the performance measurement of grade-based higher education is to reduce the failure rate of students. To identify and reduce the number of failing students, the learning activities and behaviors of students in the classroom must be continuously monitored; however, monitoring a large number of students is an extremely diffi...

The primary cause of death among children under age 5 years is acute respiratory infection, such as pneumonia. Detection of infection at the earliest point of contagion is necessary, to reduce morbidity and prevent infectious disease epidemics; therefore, identifying abnormal vital signs is essential. For early detection of pediatric infections, we...

Despite a reduction in pneumonia-related mortality, pneumonia remains a leading cause of death among children aged 0–5 years. Most of these deaths occur in developing countries. However, more than half of pneumonia-related deaths are preventable with improved facilities and health strategies. Early rapid diagnosis is important to decrease pneumonia...

Fever is one significant sign of infection. Hence, infrared thermography systems are important for detecting infected suspects in public places. Reliable temperature measurements by thermography are influenced by several factors, including environmental conditions. This paper proposes a linear regression analysis-based facial temperature optimizati...

Over 350 million people across the world suffer from major depressive disorder (MDD). More than 10% of MDD patients have suicide intent, while it has been reported that more than 40% patients did not consult their doctors for MDD. In order to increase consultation rate of potential MDD patients, we developed a novel MDD screening system which can b...

E-learning can be a potential solution to educational inequality problem in developing countries, like Mongolia, with vast land and sparse population. With the introduction of Massive Open Online Courses (MOOCs), some im-pressive cases bring the attention of the public towards it. But there is no spe-cific evidence that shows Mongolian students’ ex...

Recently, the digitizing of historical and ancient books written in thousand year old Traditional Mongolian Script has emerged to facilitate access and preservation. Unique writing style and multi-font type variations of Traditional Mongolian script brings challenges to recognize. Recognition of woodblock printed documents is one of the largest pro...

https://www.ieice.org/ken/paper/20170527cbU2/eng/ The usage of e-learning in developing countries has gradually advanced in recent years with an improved availability of internet connections and information technology support. While e-learning technology introduced relatively late in Mongolian universities, there isn’t any notable implementation ye...

Innovation system is a framework concept that can be classified in many ways, namely-national, regional, sectoral and technological. Regardless of classification, all these systems have some common features and characteristics as a system. Before the innovation system concept, Mongolia developed and implemented a system to maintain nation`s capacit...

Integral imaging (InIm) is an interesting research area in the three-dimensional (3-D) display technology. While it is simple in structure, it shows full color and full parallax 3-D images without the necessity of special glasses. InIm display usually uses the simplest lens array, and hence displayed 3-D image suffers from distortions. A dominating...

Nowadays any recognition algorithms need to work more faster and use less resources for mobile device applications. Therefore, in this paper we propose a new algorithm for the limitations in the case of traditional Mongolian script recognition. The proposed method based on a line profile in view point of the specific feature of the traditional Mong...

Integral imaging (InIm) is interesting research area in the three-dimensional (3-D) display technology. While it is simple in structure, it shows full color and full parallax 3-D images without necessity of special glasses. InIm display usually uses the simplest lens array, and hence displayed 3-D image suffers from distortions. A dominating distor...

The Central Electronics institute (ZEL) is a scientific -technical joint facility of the Research Centre Jülich. In the framework of the cooperation with the institute of chemistry and dynamics of the geosphere (ICG-V), a new computer vision based analysis system for dendrochronology was developed. High-resolution digital cameras, microscopes and m...