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CONSUMERS’ USE OF CONSUMER-GENERATED-MEDIA WHILE SHOPPING: A CONCEPTUAL OUTLOOK USING TECHNOLOGY ACCEPTANCE MODEL3 AND HOFSTEDE’S CULTURAL DIMENSIONS
Sanjukta Pookulangara
International Journal of Electronic Commerce Studies , 2011,
Abstract: Retailers have a lot to gain by utilizing and harnessing the power of social media to enhance their overall marketing strategy. Social media provide retailers an opportunity to learn about their consumers’ needs and then respond proactively; these media offer creative and effective ways for retailers to obtain insights not previously available. Consumers are increasingly turning to computer-mediated communication, i.e., ―consumer-generated-media (CGM) in order to get information on which to base their decisions. Consumers now have the means to communicate their opinions about products and companies to other consumers like themselves and to share information. This conceptual paper puts forth a research model using Technology Acceptance Model3 (TAM3) and Hofstede’s Cultural Dimensions to examine the influence of CGM on consumers’ shopping behavior.
EXAMINING CONSUMERS’ CHANNEL-MIGRATION INTENTION UTILIZING THEORY OF PLANNED BEHAVIOR: A MULTIGROUP ANALYSIS
Sanjukta Pookulangara,Prathiba Natesan
International Journal of Electronic Commerce Studies , 2010,
Abstract: This study examined channel-migration behavior using a decomposed Theory of Planned Behavior with crossover effects in brick-and-mortar stores and the Internet. An online survey was administered at four research sites (N = 547) and factor analysis and structural equation modeling, with multigroup analysis, were utilized for data analysis. Hedonic beliefs did not influence either of the channels, whereas, utilitarian beliefs were significant predictors in both brick-and-mortar stores and the Internet. Additionally, normative beliefs did not influence subjective norms in either of the channels, while self-efficacy influenced perceived behavioral control (PBC) in both the channels. Attitude and subjective norms influenced channel-migration intentions for both channels; whereas, PBC was a significant predictor of channel-migration intentions on the Internet only. The crossover effects of normative beliefs and subjective norms on attitude was significant for the Internet. The crossover effects for subjective norms and PBC on attitude was significant for brick-and-mortar stores. Attitude toward channel migration from the Internet to brick-and-mortar stores yielded a negative influence.
An in Vitro Study of Microleakage Comparing Total-Etch with Bonding Resin and Self-Etch Adhesive Luting Cements for All-Ceramic Crowns  [PDF]
Brian J. Millar, Sanjukta Deb
Open Journal of Stomatology (OJST) , 2014, DOI: 10.4236/ojst.2014.43020
Abstract: Aim: The aim of the study was to assess the dye leakage present following cementation of all-ceramic crowns with 7 currently used cements to compare total-etch (TE) with dentine bonding agent (DBA) and self-etch (SE) systems. Methods: Forty-two Authentic? crowns were fabricated and cemented onto extracted human teeth using 7 currently available cements (2 two-stage adhesives (TE + DBA): Panavia 21 Kuraray; Paracore, Coltene Whaledent and 5 all-in-one adhesives (SE): MaxCem Kerr; Panavia F2.0 Kuraray; RelyX Unicem 3MEspe; seT SDI). Following storage in water and thermal cycling, the teeth were exposed to dye, sectioned and examined under confocal microscopy. Leakage was determined by two blinded examiners and scoring was carried out on a scale of 0 - 8 per tooth (0 = no leakage, 8 complete leakage across the section). One overall reading was obtained per tooth with 6 teeth per material. Results: The results showed a wide range of scores between the different cements. Only a few specimens which used TE + DBA showed slight marginal leakage: Paracore (mean score 0 ± 0) and Panavia 21 (0.3 ± 0.5). The majority of specimens using SE showed leakage: RelyX Unicem (0.8 ± 0.8), SmartCem (1.7 ± 2.1), MaxCem (3.2 ± 1.7), Panavia F2.0 (4.5 ± 2.4) then seT (5.2 ± 2.5). Statistical analysis was carried out showing that Paracore and Panavia 21 were significantly less prone to leakage than MaxCem, (P = 0.002) and seT (P < 0.001). Conclusion: In conclusion, the choice of luting cement is important in reducing dye leakage. This study strongly favours the use of a TE with separate adhesive system placed prior to the composite luting resin.
Effect of Autoclave Sterilisation on the Dimensional Stability and Tear Strength of Three Silicone Impression Materials  [PDF]
Brian J. Millar, Sanjukta Deb
Open Journal of Stomatology (OJST) , 2014, DOI: 10.4236/ojst.2014.412069
Abstract: Objectives: There is a risk of spreading infectious material via non-sterile impressions. The aim of this study was to compare the effect of autoclave sterilisation on dimensional stability and tear strength of impression materials. Methods: Twenty-four specimens were produced using a standard ruled test block for each of three impression materials (Affinis, Aquasil and Speedex) to test dimensional stability. Thirty tear strips for each material were prepared for the tear test (ISO 34-1). Specimens were randomly allocated to 3 different groups (autoclaved, disinfected or untreated). A non-contact scanner was used to analyse dimensional change and a universal testing machine was used to determine tear strengths. Results: There were no significant differences in the test dimensions measured for any of the three impression materials following autoclave treatment compared to the disinfected or untreated control groups. The tear strengths were not adversely affected by autoclave sterilisation at 134°C. Conclusion: These addition and condensation-cured silicone impression materials can be steam autoclaved without adverse effects on dimensional accuracy or tear strength.
Accessing nature: Agrarian change, forest laws and their impact on an adivasi economy in colonial India
Gupta Sanjukta
Conservation & Society , 2009,
Abstract: This article discusses how changing access to nature impacted an adivasi people, the Hos of Singhbhum. Without romanticizing the pre-British past, it may be argued that for the Hos of the time there had been dependence both on the forest and on cultivation, which had ensured them a minimum livelihood. This paper explores how their access to nature gradually diminished under colonial rule through the twin governmental policies of expansion of the agrarian frontier and restriction of the forests to the indigenous population. This led to the sedentarisation of the adivasis, further contributing towards agrarian expansion in India. However, this article argues that the extension of cultivation did not, however, benefit the Hos. Instead, the nature of the increase in acreage in Singhbhum, led to new agricultural practices, which, together with the restrictive forest laws and lack of new irrigation facilities, led to an agrarian crisis in the region, forcing the Hos to leave their lands and seek their fortunes elsewhere.
Book Review: Manjil Hazarika, Prehistory and Archaeology of Northeast India: Multidisciplinary Investigation in an Archaeological Terra Incognita
Sanjukta Datta
- , 2019, DOI: 10.1177/0019464618820150
Abstract: Manjil Hazarika, Prehistory and Archaeology of Northeast India: Multidisciplinary Investigation in an Archaeological Terra Incognita, New Delhi: Oxford University Press, 2017, 325 pp
Properties of a Bulk-Fill Flowable Composite Resin with High Depth of Cure  [PDF]
Rimi Gill, Brian J. Millar, Sanjukta Deb
Open Journal of Stomatology (OJST) , 2017, DOI: 10.4236/ojst.2017.79032
Abstract: Introduction: Dental composite resin materials are being increasingly used for a variety of purposes and more recently as a dentine replacement material. Objectives: SDR (Dentsply) is a flowable, high-resin composite material designed to minimise the effect of the high shrinkage through the use of a flexible monomer. However the resultant properties of this material may be a factor that affects the clinical performance. Methods: Tests were carried out on SDR and two other commonly used resin-based composite materials (Herculite XRV, Kerr and Spectrum TPH, Dentsply) including: depth of cure according to ISO 4049, degree of cure using Fourier Transform Infrared Spectroscopy (FTIR), compressive strength using a Universal testing Machine, water uptake, interaction with Coca-ColaTM and analysis of thermal transitions using Differential Scanning Calorimetry (DSC). Results: SDR exhibited a high depth of cure at 4.0 mm and no difference in degree of cure in comparison with the other two dental composites. Compressive strength results varied between materials but were significantly lower for SDR (P < 0.05). Water uptake was similar for all materials but elution was significantly greater for SDR and interaction with Coca-Cola showed greatest change for SDR. Conclusions: There are some statistically significant variations between the physical properties of the materials which are attributed to the monomer type and lower amount of filler in the flowable composite that may explain the published clinical outcomes.
Damage and Fatigue Failure of Conventional and Bulk-Filled Resin Composites  [PDF]
Rana Alkattan, Subir Banerji, Sanjukta Deb
Open Journal of Stomatology (OJST) , 2022, DOI: 10.4236/ojst.2022.122006
Abstract: Objectives: Resin-based composites are the most widely used dental restorative materials. Bulk-fill resin composites are of rising interest as they can be clinically applied in thicker increments compared to conventional composites. The purpose of the study was to evaluate the flexural fatigue strength of a conventional and bulk-filled resin composite placed incrementally or non-incrementally. Methods: Resin composite specimens were fabricated using either a conventional (Brilliant EverGlow?) or a bulk-fill (Fill-Up!TM) resin composite by either non-incremental filling (2 × 2 × 25 mm3) or in increments of (1 × 2 × 25 mm3). Specimens were stored in distilled water for 24 h or thermocycled for 5000 cycles. The static flexural strength (σ), flexural fatigue limit (FFL) after 105 cycles and post-fatigue flexural strength (PFσ) were measured. Data were analyzed using ANOVA, with a post-hoc Tukey’s test to compare mean FFL (p < 0.05). Results: Bulk-filled composites showed higher static σ and PFσ compared to conventional composites regardless of incremental cure or thermocycling (p < 0.05). However, the non-incrementally placed conventional composite exhibited superior FFL. Thermocycling caused a significant decrease in σ and FFL for conventional composites but not bulk-filled composites. There was no significant difference in PFσ compared to σ after 24 h storage, but a significant increase in PFσ after thermocycling (p < 0.05). Conclusions: The type of composite rather than incremental placement had a greater effect on flexural strength, suggesting that operator placement technique had less influence than material selection. Thermocycling in combination with cyclic loading caused a strengthening effect in the composites, likely due to the absorption and dissipation of stresses, thereby enhancing resistance to fracture.
In vitro Effect on the Antioxidative Properties of Crude Extract of C. album in Presence of the Organophosphate, Acephate
Sanjukta Datta,Santinath Ghosh
Environmental Research Journal , 2012, DOI: 10.3923/erj.2012.94.99
Abstract: Acephate, an organophosphorus pesticide is a potent free radical generator. The aim of this study was to evaluate the role of plant phenolics in Chenopodium album against acephate toxicity in vitro, predominantly acting as a free radical scavenger. Experiments based on DPPH radical scavenging activity and reducing power of plant extract both in the presence and absence of acephate was analyzed using concentrations of 1, 2.5 and 5 μg mL-1 of polyphenolic compounds and 3 mg mL-1 of acepahte which showed that pesticides significantly reduced the activity of the plant extract and a higher concentration was required to quench the ABTS+. radicals. No significant change was observed in case of lipid peroxidation in presence of acephate. Thus, from this study, it is evident that pesticides act as a serious free radical source whose effect can be reduced, if not totally but to a certain extent by green leafy vegetables.
RankProt: A multi criteria-ranking platform to attain protein thermostabilizing mutations and its in vitro applications - Attribute based prediction method on the principles of Analytical Hierarchical Process
Debamitra Chakravorty,Sanjukta Patra
- , 2018, DOI: 10.1371/journal.pone.0203036
Abstract:
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