Southern Illinois University Carbondale

About: Southern Illinois University Carbondale is a education organization based out in Carbondale, Illinois, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 13570 authors who have published 24819 publications receiving 667385 citations. The organization is also known as: SIU Carbondale & SIUC.

The influence of C2C communications in online brand communities on customer purchase behavior

Abstract: Increasingly, consumers use the internet as a vehicle for pre-purchase information gathering While technical specifications and potentially biased selling points can be gleaned from corporate web sites, online brand communities are becoming essential conduits for the customer-to-customer (C2C) sharing of product information and experiences This study develops and tests a model of online C2C communications in developing desirable online brand community outcomes Two studies were used to test the model In Study 1, a netnography technique was employed and conversations between brand community members were coded and combined with survey data to test the research model In Study 2 an experiment was conducted to further test the sequence of events in our base model Our findings show that online brand communities are effective tools for influencing sales, regardless of whether these communities reside on company-owned or independently-owned websites In addition, we demonstrate interesting asymmetrical effects, whereby the positive information shared by community members has a stronger moderating influence on purchase behavior than negative information Further, we find that online brand communities are effective customer retention tools for retaining both experienced and novice customers These findings highlight the need for all firms to carefully consider their online community strategies

Solution for a Fractional Diffusion-Wave Equation Defined in a Bounded Domain

Abstract: A general solution is given for a fractional diffusion-wave equation defined in a bounded space domain. The fractional time derivative is described in the Caputo sense. The finite sine transform technique is used to convert a fractional differential equation from a space domain to a wavenumber domain. Laplace transform is used to reduce the resulting equation to an ordinary algebraic equation. Inverse Laplace and inverse finite sine transforms are used to obtain the desired solutions. The response expressions are written in terms of the Mittag–Leffler functions. For the first and the second derivative terms, these expressions reduce to the ordinary diffusion and wave solutions. Two examples are presented to show the application of the present technique. Results show that for fractional time derivatives of order 1/2 and 3/2, the system exhibits, respectively, slow diffusion and mixed diffusion-wave behaviors.

Stable Aqueous Dispersions of Noncovalently Functionalized Graphene from Graphite and their Multifunctional High-Performance Applications

Abstract: We present a scalable and facile technique for noncovalent functionalization of graphene with 1-pyrenecarboxylic acid that exfoliates single-, few-, and multilayered graphene flakes into stable aqueous dispersions. The exfoliation mechanism is established using stringent control experiments and detailed characterization steps. Using the exfoliated graphene, we demonstrate highly sensitive and selective conductometric sensors (whose resistance rapidly changes >10 000% in saturated ethanol vapor), and ultracapacitors with extremely high specific capacitance (∼120 F/g), power density (∼105 kW/kg), and energy density (∼9.2 Wh/kg).

The structure of bovine rhodopsin.

Abstract: We have isolated 16 peptides from a cyanogen bromide digest of rhodopsin. These cyanogen bromide peptides account for the complete composition of the protein. Methionine-containing peptides from other chemical and enzymatic digests of rhodopsin have allowed us to place the cyanogen bromide peptides in order, yielding the sequence of the protein. We have completed the sequence of most of the cyanogen bromide peptides. This information, in conjunction with that from other laboratories, forms the basis for our prediction of the secondary structure of the protein and how it may be arranged in the disk membrane.