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Browsing by Author Nguyen, Duc Manh

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  • Conference Paper

  • An Efficient Column Generation Approach for Solving the Routing and Spectrum Assignment Problem in Elastic Optical Networks

    • Authors: Nguyen, Duc Manh; Le, Anh Ngoc; Pham, Thi Viet Huong; Ngo, Hong Son; Dao, Thanh Hai (2019)

  • Routing and spectrum assignment (RSA) is an essential problem in designing, operating and managing elastic optical networks to achieve spectrum efficiency and thus, efficient algorithms for solving the RSA has been of crucial importance. The conventional Mixed Integer Linear Programming (MILP) formulation has a critical drawback of scalability and hence has been applicable to only small data instances while heuristic-based approach is prone to locally optimal solutions without guarantees for global optimality. In order to mitigate the scalability issue of the traditional MILP models and possibly low-quality solutions from heuristic, we investigate an approach based on the column gener...
  • item.jpg
  • Student report

  • Building a computer vision assisted pill inspection system

    • Authors: Vu, Xuan Bac; Luong, Dinh Tung; Nguyen, Nhat Minh; Nguyen, Duc Manh;  Advisor: Kim, Đinh Thai; Ha, Manh Hung (2024)

  • These days, technology is very vital. Computer vision and artificial intelligence (AI) have made major contributions to numerous disciplines, particularly the medical sector. The use of AI in this sector has several advantages and enormous promise for both customers and industry. Developing a system to inspect, choose, and assess the caliber of pharmaceutical and medical supplies is one of those advantages. In addition, by adding layers to Roboflow and using the YOLOv8 deep neural network - one of the most advanced models in the field of object recognition, it allows to recognize and classify objects in images at high speed. high accuracy and precision, we have focused on creating an...
  • item.jpg
  • Journal Article

  • Effect of hydrogen-bonding networks in water on the proton conductivity properties of metal–organic frameworks

    • Authors: Nguyen, My V.; Dong, Hieu C.; Nguyen, Duc Manh; Vu, Nam H.; Phan, Thang B. (2021)

  • We study the proton conductivity properties of MOF-801. We find that MOF-801 possesses intrinsic proton carrier sites, m3-OH groups, in clusters yielding the generation of hydrogen-bonding networks with guest water molecules at high relative humidity (RH), facilitating proton transport. Remarkably, this material has a high proton conductivity of 1.82 10 3 S cm 1 under 98% RH at 90 C and maintains its performance over an extended time. Our investigations reveal that the increase in proton conductivity is correlated to numerous hydrogen bonds within the MOF structure. The activation energy of this process is low (Ea ¼ 0.21 eV), showing that the protons hop through the membrane ...

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Browsing by Author Nguyen, Duc Manh

Jump to: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
or enter first few letters:  
Showing results 1 to 3 of 3
  • item.jpg
  • Conference Paper

  • An Efficient Column Generation Approach for Solving the Routing and Spectrum Assignment Problem in Elastic Optical Networks

    • Authors: Nguyen, Duc Manh; Le, Anh Ngoc; Pham, Thi Viet Huong; Ngo, Hong Son; Dao, Thanh Hai (2019)

  • Routing and spectrum assignment (RSA) is an essential problem in designing, operating and managing elastic optical networks to achieve spectrum efficiency and thus, efficient algorithms for solving the RSA has been of crucial importance. The conventional Mixed Integer Linear Programming (MILP) formulation has a critical drawback of scalability and hence has been applicable to only small data instances while heuristic-based approach is prone to locally optimal solutions without guarantees for global optimality. In order to mitigate the scalability issue of the traditional MILP models and possibly low-quality solutions from heuristic, we investigate an approach based on the column gener...
  • item.jpg
  • Student report

  • Building a computer vision assisted pill inspection system

    • Authors: Vu, Xuan Bac; Luong, Dinh Tung; Nguyen, Nhat Minh; Nguyen, Duc Manh;  Advisor: Kim, Đinh Thai; Ha, Manh Hung (2024)

  • These days, technology is very vital. Computer vision and artificial intelligence (AI) have made major contributions to numerous disciplines, particularly the medical sector. The use of AI in this sector has several advantages and enormous promise for both customers and industry. Developing a system to inspect, choose, and assess the caliber of pharmaceutical and medical supplies is one of those advantages. In addition, by adding layers to Roboflow and using the YOLOv8 deep neural network - one of the most advanced models in the field of object recognition, it allows to recognize and classify objects in images at high speed. high accuracy and precision, we have focused on creating an...
  • item.jpg
  • Journal Article

  • Effect of hydrogen-bonding networks in water on the proton conductivity properties of metal–organic frameworks

    • Authors: Nguyen, My V.; Dong, Hieu C.; Nguyen, Duc Manh; Vu, Nam H.; Phan, Thang B. (2021)

  • We study the proton conductivity properties of MOF-801. We find that MOF-801 possesses intrinsic proton carrier sites, m3-OH groups, in clusters yielding the generation of hydrogen-bonding networks with guest water molecules at high relative humidity (RH), facilitating proton transport. Remarkably, this material has a high proton conductivity of 1.82 10 3 S cm 1 under 98% RH at 90 C and maintains its performance over an extended time. Our investigations reveal that the increase in proton conductivity is correlated to numerous hydrogen bonds within the MOF structure. The activation energy of this process is low (Ea ¼ 0.21 eV), showing that the protons hop through the membrane ...