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Papers by Prasit Pisesweerayos

Advanced Materials Research, 2014

This research project produced two fabricated ultrafine conductive polymeric fibers. The first fi... more This research project produced two fabricated ultrafine conductive polymeric fibers. The first fiber was fabricated from a polymer and conductive polymer solution, and the second was fabricated from a polymer and metal nanoparticle/ nanocomposite. The resulting fibers were characterized and analyzed. For all fiber samples, the ultrafine polymeric fibers were fabricated using polyvinyl alcohol (PVA). The conductive polymer used in the first fiber sample was poly (3,4-ethylenedioxythiophene)/ polystyrene sulfonate (PEDOT/PSS). The conductive nanoparticles used in the second fiber sample were silver nanoparticles (AgNPs). The ultrafine conductive polymer fibers and the ultrafine conductive nanoparticle fibers were fabricated using an electrospining process. During the fabrication process of each fiber sample, different concentrations of either PEDOT/PSS, for fiber sample one, or AgNPs, for fiber sample two, were combined in PVA solution. Using optimal conditions, ultrafine fibers were ...

This paper questions the viability of a stand-alone eLearning over the network (e-mode) independe... more This paper questions the viability of a stand-alone eLearning over the network (e-mode) independent from the classroom education (C-mode). The trade-off in effectiveness and efficiency between the two modes is discussed in the context of learning system for business management, in terms of content flexibility, time/location shift, delivery flexibility and human inspiration. A model of learner’s choice is developed for an optimal blend of the E-mode and C-mode based on the user (learner) characteristics and nature of the (learning) task. Introduction: A model of E+C

The International Journal of the Computer, the Internet and Management, 2005

This paper questions the viability of a stand-alone eLearning over the network (emode) independen... more This paper questions the viability of a stand-alone eLearning over the network (emode) independent from the classroom education (C-mode). The trade-off in effectiveness and efficiency between the two modes is discussed in the context of learning system for business management, in terms of content flexibility, time/location shift, delivery flexibility and human inspiration. A model of learner’s choice is developed for an optimal blend of the E-mode and C-mode based on the user (learner) characteristics and nature of the (learning) task.

This paper questions the viability of a stand-alone eLearning over the network (emode) independen... more This paper questions the viability of a stand-alone eLearning over the network (emode) independent from the classroom education (C-mode). The trade-off in effectiveness and efficiency between the two modes is discussed in the context of learning system for business management, in terms of content flexibility, time/location shift, delivery flexibility and human inspiration. A model of learner’s choice is developed for an optimal blend of the E-mode and C-mode based on the user (learner) characteristics and nature of the (learning) task. Introduction: A model of E+C eLearning may be defined as “any learning that utilizes a network (LAN, WAN or Internet) for delivery, interaction, or facilitation” This E-mode of education has attracted increasing interests of governments, companies, universities, schools and other education service providers all over the world 2 , as an alternative to the traditional 1 Source: Assumption University website on e learning at http://www.elearning.au.edu/ ...

Advanced Materials Research, Nov 19, 2014

Poly (vinyl alcohol)-silver nanoparticles (PVA:AgNPs), and poly (vinyl alcohol)-silver nanopartic... more Poly (vinyl alcohol)-silver nanoparticles (PVA:AgNPs), and poly (vinyl alcohol)-silver nanoparticles-poly (3, 4-ethylene dioxythiophene)/poly (styrene sulfonate) (PVA:AgNPs: PEDOT/ PSS) were generated as ultra-fine electrospun fibers using the aligned fiber mat and aligned single fiber techniques. SEM and TEM were used to confirm the morphology, diameter size, and fiber alignment of the ultra-fine fibers. A two-probe technique was utilized to assess the electrical conductivity of the ultrafine fibers. The highest conductivity of PVA:AgNPs, (10 %w/v:0.75 %w/v) with a fiber diameter of 0.152 μm, with voltage applied at 17.5 kV within a 20 min collection period in the electrospinning process, was 43.20 S/cm; whereas the highest conductivity of PVA:AgNPs: PEDOT/PSS, (10 %w/v:0.25 %w/v:0.084 %w/v), with a fiber diameter of 0.158 μm and voltage applied at 17.5 kV within a 45 min collection period in the electrospinning process, was 92.18 S/cm.

Advanced Materials Research, 2014

ABSTRACT

Advanced Materials Research, 2014

ABSTRACT

Advanced Materials Research, 2014

ABSTRACT

Advanced Materials Research, Nov 19, 2014

ABSTRACT

Advanced Materials Research, 2014

This research project produced two fabricated ultrafine conductive polymeric fibers. The first fi... more This research project produced two fabricated ultrafine conductive polymeric fibers. The first fiber was fabricated from a polymer and conductive polymer solution, and the second was fabricated from a polymer and metal nanoparticle/ nanocomposite. The resulting fibers were characterized and analyzed. For all fiber samples, the ultrafine polymeric fibers were fabricated using polyvinyl alcohol (PVA). The conductive polymer used in the first fiber sample was poly (3,4-ethylenedioxythiophene)/ polystyrene sulfonate (PEDOT/PSS). The conductive nanoparticles used in the second fiber sample were silver nanoparticles (AgNPs). The ultrafine conductive polymer fibers and the ultrafine conductive nanoparticle fibers were fabricated using an electrospining process. During the fabrication process of each fiber sample, different concentrations of either PEDOT/PSS, for fiber sample one, or AgNPs, for fiber sample two, were combined in PVA solution. Using optimal conditions, ultrafine fibers were ...

This paper questions the viability of a stand-alone eLearning over the network (e-mode) independe... more This paper questions the viability of a stand-alone eLearning over the network (e-mode) independent from the classroom education (C-mode). The trade-off in effectiveness and efficiency between the two modes is discussed in the context of learning system for business management, in terms of content flexibility, time/location shift, delivery flexibility and human inspiration. A model of learner’s choice is developed for an optimal blend of the E-mode and C-mode based on the user (learner) characteristics and nature of the (learning) task. Introduction: A model of E+C

The International Journal of the Computer, the Internet and Management, 2005

This paper questions the viability of a stand-alone eLearning over the network (emode) independen... more This paper questions the viability of a stand-alone eLearning over the network (emode) independent from the classroom education (C-mode). The trade-off in effectiveness and efficiency between the two modes is discussed in the context of learning system for business management, in terms of content flexibility, time/location shift, delivery flexibility and human inspiration. A model of learner’s choice is developed for an optimal blend of the E-mode and C-mode based on the user (learner) characteristics and nature of the (learning) task.

This paper questions the viability of a stand-alone eLearning over the network (emode) independen... more This paper questions the viability of a stand-alone eLearning over the network (emode) independent from the classroom education (C-mode). The trade-off in effectiveness and efficiency between the two modes is discussed in the context of learning system for business management, in terms of content flexibility, time/location shift, delivery flexibility and human inspiration. A model of learner’s choice is developed for an optimal blend of the E-mode and C-mode based on the user (learner) characteristics and nature of the (learning) task. Introduction: A model of E+C eLearning may be defined as “any learning that utilizes a network (LAN, WAN or Internet) for delivery, interaction, or facilitation” This E-mode of education has attracted increasing interests of governments, companies, universities, schools and other education service providers all over the world 2 , as an alternative to the traditional 1 Source: Assumption University website on e learning at http://www.elearning.au.edu/ ...

Advanced Materials Research, Nov 19, 2014

Poly (vinyl alcohol)-silver nanoparticles (PVA:AgNPs), and poly (vinyl alcohol)-silver nanopartic... more Poly (vinyl alcohol)-silver nanoparticles (PVA:AgNPs), and poly (vinyl alcohol)-silver nanoparticles-poly (3, 4-ethylene dioxythiophene)/poly (styrene sulfonate) (PVA:AgNPs: PEDOT/ PSS) were generated as ultra-fine electrospun fibers using the aligned fiber mat and aligned single fiber techniques. SEM and TEM were used to confirm the morphology, diameter size, and fiber alignment of the ultra-fine fibers. A two-probe technique was utilized to assess the electrical conductivity of the ultrafine fibers. The highest conductivity of PVA:AgNPs, (10 %w/v:0.75 %w/v) with a fiber diameter of 0.152 μm, with voltage applied at 17.5 kV within a 20 min collection period in the electrospinning process, was 43.20 S/cm; whereas the highest conductivity of PVA:AgNPs: PEDOT/PSS, (10 %w/v:0.25 %w/v:0.084 %w/v), with a fiber diameter of 0.158 μm and voltage applied at 17.5 kV within a 45 min collection period in the electrospinning process, was 92.18 S/cm.

Advanced Materials Research, 2014

ABSTRACT

Advanced Materials Research, 2014

ABSTRACT

Advanced Materials Research, 2014

ABSTRACT

Advanced Materials Research, Nov 19, 2014

ABSTRACT