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Smart Thermostat based on Machine Learning and Rule Engine
Tran Quoc Bao Huy,정선태 한국멀티미디어학회 2020 멀티미디어학회논문지 Vol.23 No.2
In this paper, we propose a smart thermostat temperature set-point control method based on machine learning and rule engine, which controls thermostat’s temperature set-point so that it can achieve energy savings as much as possible without sacrifice of occupants’ comfort while users’ preference usage pattern is respected. First, the proposed method periodically mines data about how user likes for heating (winter)/cooling (summer) his or her home by learning his or her usage pattern of setting temperature set-point of the thermostat during the past several weeks. Then, from this learning, the proposed method establishes a weekly schedule about temperature setting. Next, by referring to thermal comfort chart by ASHRAE, it makes rules about how to adjust temperature set-points as much as low (winter) or high (summer) while the newly adjusted temperature set-point satisfies thermal comfort zone for predicted humidity. In order to make rules work on time or events, we adopt rule engine so that it can achieve energy savings properly without sacrifice of occupants’ comfort. Through experiments, it is shown that the proposed smart thermostat temperature set-point control method can achieve better energy savings while keeping human comfort compared to other conventional thermostat.
임베디드 시스템을 위한 멀티태스킹 딥러닝 학습 기반 경량화 성별/연령별 추정
( Huy-tran Quoc Bao ),정선태 ( Chung Sun-tae ) 한국정보처리학회 2020 한국정보처리학회 학술대회논문집 Vol.27 No.1
Age estimation and gender classification for human is a classic problem in computer vision. Almost research focus just only one task and the models are too heavy to run on low-cost system. In our research, we aim to apply multitasking learning to perform both task on a lightweight model which can achieve good precision on embedded system in the real time.
Bao, Vo Nguyen Quoc,Thanh, Tran Thien,Nguyen, Tuan Duc,Vu, Thanh Dinh The Korea Institute of Information and Commucation 2013 Journal of communications and networks Vol.15 No.3
The exact closed-form expressions for outage probability and bit error rate of spectrum sharing-based multi-hop decode-and-forward (DF) relay networks in non-identical Rayleigh fading channels are derived. We also provide the approximate closed-form expression for the system ergodic capacity. Utilizing these tractable analytical formulas, we can study the impact of key network parameters on the performance of cognitive multi-hop relay networks under interference constraints. Using a linear network model, we derive an optimum relay position scheme by numerically solving an optimization problem of balancing average signal-to-noise ratio (SNR) of each hop. The numerical results show that the optimal scheme leads to SNR performance gains of more than 1 dB. All the analytical expressions are verified by Monte-Carlo simulations confirming the advantage of multihop DF relaying networks in cognitive environments.
Ownership Structure and Dividend Policy of Vietnamese Enterprises after the Global Financial Crisis
Pham,Quoc Viet,Luong,Quoc Trong Vinh,Tran,Bao Vy 한국유통과학회 2019 KODISA ICBE (International Conference on Business Vol.2019 No.-
The paper examines the impact of ownership structure on the dividend policy of listed companies in the Vietnam stock market after the global financial crisis. The sample uses panel data including 91 corporates listed on the Ho Chi Minh City Stock Exchange (HOSE) for 2009-2015. The results of the study show that public ownership and domestic private ownership are positive correlated with dividend payout ratio, while the effect of foreign ownership on dividend policy is not significant. This result could provide an important implication on the orientation of restructuring state-owned enterprises and attracting foreign investment in Vietnam stock market in the future.
One Rank Cuckoo Search Algorithm for Bi-Objective Load Dispatch Problem
Cuong Dinh Tran,Thang Trung Nguyen,Hanh Minh Hoang,Bao Quoc Nguyen 보안공학연구지원센터 2016 International Journal of Grid and Distributed Comp Vol.9 No.4
This paper presents the application of a One Rank Cuckoo Search Algorithm (ORCSA) to bi-objective load dispatch (BOLD) problem where two objectives including fuel and emission are taken into consideration. ORCSA is an improvement of basic Cuckoo search algorithm (BCSA) where several modifications are carried out so as to improve the performance of the BCSA. The performance of the proposed ORCSA is validated by using two systems including a three-unit system with one load case and a six-unit system with three load cases and comparing the obtained results with other methods available in the article. The analysis on the result comparison indicates that the ORCSA is very efficient for the problem.
The Belt and Road Initiative (BRI): Opportunities and Risks from Vietnamese Perspective
Long Duc Bao NGUYEN,Tracy Trang LY,Doan Cong TRAN,Ai Van TRAN,An Quoc LE,Alan HUDSON 한국유통과학회 2022 The Journal of Asian Finance, Economics and Busine Vol.9 No.4
The goal of this research is to look at the Belt and Road Initiative’s (BRI) goals, principles, and priorities, as well as criticisms and concerns. Another goal is to determine the Vietnamese government’s best response to the BRI. Finally, the study looks at the Vietnamese viewpoint. Document review is used in conjunction with PESTELED analysis and EIU country risk model technique in this study. The study is focused on in-depth interviews with 38 top government leaders, researchers, and scholars by adopting the Delphi technique to determine major factors of risks and opportunities as well as obtain a clearer view on the Vietnamese perspective of the BRI. The main conclusion is that Vietnam’s participation in the BRI could result in a variety of benefits and risks, including economic development, connectivity and integration, development finance, cooperation, coordination, trade facilitation, and people-to-people communication, as well as diplomatic and political risks, financial risks, environmental challenges, and job creation. Another conclusion is suggested that careful and case-by-case negotiation with China is needed for Vietnam to exploit the future benefits of BRI. There is a need to set up the strategy to mitigate the risk impacts, reduce the risk level, avoid risk, at last turn the risk into opportunities.
Thu Dang Anh Phan,Bao Gia Phung,Tu Thanh Duong,Vu Anh Hoang,Dat Quoc Ngo,Nguyen Dinh The Trinh,Tung Thanh Tran 대한병리학회 2021 Journal of Pathology and Translational Medicine Vol.55 No.2
Background: Langerhans cell histiocytosis (LCH) is more common in children than adults and involves many organs. In children, the BRAF V600E mutation is associated with recurrent and high-risk LCH. Methods: We collected paraffin blocks of 94 pediatric LCH patients to detect BRAF V600E mutation by sequencing. The relationship between BRAF V600E status and clinicopathological parameters were also critically analyzed. Results: BRAF V600E mutation exon 15 was detected in 45 cases (47.9%). Multiple systems LCH showed a significantly higher BRAF V600E mutation rate than a single system (p = .001). No statistical significance was evident for other clinical characteristics such as age, sex, location, risk organs involvement, and CD1a expression. Conclusions: In Vietnamese LCH children, the proportion of BRAF V600E mutational status was relatively high and related to multiple systems.