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The Effect of Pre-purchase WOM Seeking Behavior on the WOM Intention
Fortune Edem Amenuvor,이형탁 한국전략마케팅학회 2020 마케팅논집 Vol.28 No.2
In spite of the fact that there have been many studies on word-of-mouth, most of them have discussed it from one of the following perspectives: WOM sending and WOM receiving. However, because the customer can be both a WOM receiver and a WOM sender simultaneously, previous studies have limitations relative to understanding the WOM phenomenon as far as these two research streams are concerned. Consequently, this study sets out to examine the effects of WOM information seeking effort on WOM sending intention after a product experience. To examine the effect of consumers' pre-purchase WOM seeking behavior on the intention to send WOM information to others after purchase and their subsequent repurchase intentions, this study surveys 231 university students. The respondents are asked to recall a product purchase experience of more than 50,000 won. Most of the hypotheses proposed in this study are supported. The theoretical implication of this research is that it fills the gap that has been in the previous research streams which has been classified into WOM seeking behavior and WOM sending behavior. Additionally, the practical implication of this research is that it can further increase consumers’ WOM sending behaviors by encouraging them to seek information more actively.
Betty Edem Nugba,A. A. El‑Moneim,Nahla O. Mousa,Ahmed Osman 한국탄소학회 2023 Carbon Letters Vol.33 No.6
Graphene is a suitable transducer for wearable sensors because of its high conductivity, large specific surface area, flexibility, and other unique considerable features. Using a simple, fast galvanic pulse electrodeposition approach, a unique nonenzymatic glucose amperometric electrode was successfully developed based on well-distributed fine Cu nanoparticles anchored on the surface of 3D structure laser-induced graphene. The fabricated electrode allows glucose detection with a sensitivity of 2665 μA/mM/cm2, a response time of less than 5 s, a linear range of 0.03–4.5 mM, and a LOD of 0.023 μM. It also detects glucose selectively in the presence of interfering species such as ascorbic acid and urea. These provide the designed electrode the advantages for glucose sensing in saliva with 97% accuracy and present it among the best saliva-range non-enzymatic glucose sensors reported to date for real-life diagnostic applications.
Agbenyeke, Raphael Edem,Park, Bo Keun,Chung, Taek-Mo,Kim, Chang Gyoun,Han, Jeong Hwan Elsevier 2018 APPLIED SURFACE SCIENCE - Vol.456 No.-
<P><B>Abstract</B></P> <P>In this study, atomic layer deposition (ALD) of Cu<SUB>2</SUB>S was explored using bis(dimethylamino-2-methyl-2-butoxy)copper(II) and 5% H<SUB>2</SUB>S combination as Cu and S sources, respectively. The reaction resulted in a high growth rate of ∼0.22–0.24 nm/cycle at 150–200 °C owing to the high reactivity of the Cu precursor. At all investigated temperatures, Cu<SUB>2</SUB>S films with Cu oxidation state of +1 were obtained with negligible impurity levels. It was revealed that stoichiometric Cu<SUB>2</SUB>S films could be deposited at 120–150 °C, while sulfur deficient films was formed at 200 °C. Cu<SUB>2</SUB>S ALD process at low temperatures of 100–120 °C resulted in continuous film formation while the higher deposition temperatures of >150 °C led to island formation. Cu<SUB>2</SUB>S films showed p-type electrical characteristic with high hole concentrations of 4 × 10<SUP>19</SUP>–10<SUP>21</SUP> cm<SUP>−3</SUP> and Hall mobility of 2 cm<SUP>2</SUP>/vs. Lastly, the as-deposited Cu<SUB>2</SUB>S films exhibited an optical band gap of 1.2 eV which widened upon prolonged surface oxidation and in addition displayed NIR intra-band absorption.</P> <P><B>Highlights</B></P> <P> <UL> <LI> High growth rate and impurity free Cu<SUB>2−x</SUB>S ALD process was developed using a new precursor combination of bis(dimethylamino-2-methyl-2-butoxy)Cu(II) and H<SUB>2</SUB>S at 120–200 °C. </LI> <LI> Stoichiometric Cu<SUB>2</SUB>S films were deposited at 120–150 °C, while sulfur deficient Cu<SUB>2−x</SUB>S film was formed at 200 °C. </LI> <LI> Cu<SUB>2</SUB>S films showed p-type characteristics with high carrier concentrations and mobility of 4 × 10<SUP>19</SUP>–10<SUP>21</SUP> cm<SUP>−3</SUP> and 2 cm<SUP>2</SUP>/Vs, respectively. </LI> <LI> As deposited Cu<SUB>2</SUB>S films showed an optical band gap of 1.2 eV which widened after prolonged air exposure and in addition exhibited increased near infrared intra-band absorption. </LI> </UL> </P>
Agbenyeke, Raphael Edem,Jung, Eun Ae,Park, Bo Keun,Chung, Taek-Mo,Kim, Chang Gyoun,Han, Jeong Hwan Elsevier 2017 APPLIED SURFACE SCIENCE - Vol.419 No.-
<P><B>Abstract</B></P> <P>Indium oxide (In<SUB>2</SUB>O<SUB>3</SUB>) thin films were deposited by atomic layer deposition using dimethyl(<I>N</I>-ethoxy-2,2-dimethylcarboxylicpropanamide)indium (Me<SUB>2</SUB>In(EDPA)) and H<SUB>2</SUB>O as the In-precursor and reactant, respectively. The In<SUB>2</SUB>O<SUB>3</SUB> films exhibited a saturated growth rate of 0.083nm/cycle at a deposition temperature of 300°C. Porous and amorphous films were grown at 150°C, whereas dense polycrystalline films were deposited at higher deposition temperatures of 200–300°C. XPS analysis revealed negligible carbon and nitrogen impurities incorporation within the films. The estimated bandgap of the In<SUB>2</SUB>O<SUB>3</SUB> films by spectroscopic ellipsometry and UV–vis spectroscopy was about 3.7eV and the increase in refractive index with deposition temperature from 150 to 300°C indicated that dense films were grown at higher temperatures. The high transmittance (>94% in visible light) and good electrical properties (resistivity ∼1.2–7mΩcm, Hall mobility ∼28–66cm<SUP>2</SUP>/Vs) of the In<SUB>2</SUB>O<SUB>3</SUB> films make them a viable option for optoelectronic applications.</P> <P><B>Highlights</B></P> <P> <UL> <LI> In<SUB>2</SUB>O<SUB>3</SUB> films were grown using dimethyl(<I>N</I>-ethoxy-2,2-dimethylcarboxylicpropanamide)indium and H<SUB>2</SUB>O at 150–300°C. </LI> <LI> Polycrystalline In<SUB>2</SUB>O<SUB>3</SUB> films with negligible impurities were deposited at 200–300°C, while amorphous and highly oxygen deficient In<SUB>2</SUB>O<SUB>3</SUB> films were deposited at 150°C. </LI> <LI> In<SUB>2</SUB>O<SUB>3</SUB> films deposited at 200–300°C exhibited the transmittance over 94%, resistivity of 1.2–7mΩcm, and Hall mobility of 28–66cm<SUP>2</SUP>/Vs. </LI> </UL> </P>
Investigating Relationship between Control Mechanisms, Trust and Channel Outcome in Franchise System
Ho-Taek Yi,Amenuvor Edem FORTUNE,여찬구 한국유통과학회 2019 유통과학연구 Vol.17 No.9
Purpose - The overarching aim of this study is to empirically test the effect of ex-post control mechanisms on multi-dimensional trust and channel performance in franchise systems. Although the franchise system is a vertical marketing channel based on trust between the franchisor and the franchisees, issues related to franchisee’s opportunistic behavior have persisted and thus requires research into the effective control system of franchise headquarters. Research design, data, and methodology - In this study, data was collected from 150 franchises to identify the effect of two types of franchising headquarters’ control system on the multi-dimensional trust and franchise channel outcome between franchisor and franchisee. To test the hypotheses intended to achieve this aim, structural equations modeling technique is utilized. Results - The results of this research reveal that among the two formal control systems studied (output and process control), output control positively and significantly affects multidimensional trust. Additionally, among the three dimensions of trust employed in this study, only expertise has a positive and significant effect on contract compliance. Equally, only expertise and integrity have a negative and significant effect on opportunistic behavior. Conclusions - The study provides managerial and theoretical insights into understanding ex-post control mechanisms, trust, compliance and opportunistic behaviors in franchise systems.