563 research outputs found

    WWW visibility in marketing

    Get PDF
    Abstract. Social media is a vital channel for marketers nowadays. Customers are more empowered today than ever before and the Internet is accelerating the trend toward greater customer empowerment. In few years Web 2.0 has become a highly important media and it has changed the Web into platform where individuals can communicate, assemble and organize data. Web 2.0 also offers a variety of different “tools” for companies to be used in marketing. Because companies and products are visible and discussed in social media, it is recommendable that companies try to seek positive publicity in these media. Thesis aims to describe the opportunities social media provides in organizational use, as well as, to provide an overview of the current situation in social media utilization in Finland. Further, it seeks to investigate the challenges organizations have in social media or in a whole field of E-marketing, and what kind of plans organizations have for the future in a field of E-marketing. The study consists of theoretical and empirical parts. Literature part scrutinizes the literature that covers different sides of online marketing. Empirical part of the study was conducted as a survey research. Results are based on a questionnaire and interviews that were conducted among Finnish companies during time period of spring and autumn 2012. The data was gathered among companies operating in different fields of business. Interviews were transcribed and conclusions were made from those. Because of the limited number of participants that took part to the questionnaire, the results derived from it are merely suggestive. Nevertheless, interviews did strengthen the understanding that was inherited from the questionnaire. The findings reveal that e-marketing has a very important role in the companies’ marketing strategy. Majority of the firms see social media marketing as a positive thing. Yet, the companies were unsure whether they possess the needed skills to do marketing in social media effectively. The results imply that the reason for this is related to the skills and experience the companies have in social media marketing. Those are such issues though, that company will learn and will develop its own way to use social media. This was also showed in the results.Tiivistelmä. Sosiaalinen media on tärkeä markkinointikanava nykypäivänä. Kuluttajilla on nykyään enemmän mahdollisuuksia vaikuttaa kuin koskaan ennen, minkä lisäksi Internet tarjoaa yhä kasvavassa määrin vaikuttamiskeinoja. Muutamassa vuodessa Web 2.0:sta on tullut erittäin tärkeä media, joka on muuttanut Internetin alustaksi, jossa ihmiset voivat kommunikoida sekä koota ja järjestää tietoa. Web 2. tarjoaa useita ”työkaluja” myös yrityksille käytettäväksi markkinoinnissa. Koska yritykset ja tuotteet ovat näkyvissä ja keskustelun kohteena sosiaalisissa medioissa, on suositeltavaa, että yritykset yrittävät hakea positiivista julkisuutta näissä medioissa. Tämä pro gradu -tutkielma pyrkii kuvailemaan mahdollisuuksia, joita sosiaalinen media tarjoaa organisaatioille, minkä lisäksi se tarjoaa yleiskuvan sosiaalisen median hyödyntämisestä Suomessa. Lisäksi tavoitteena on selvittää haasteita, joita organisaatioilla on sosiaalisessa mediassa tai laajemmin sähköisessä kaupankäynnissä, sekä selvittää yritysten tulevaisuuden visioita sähköiselle kaupankäynnille. Tämä työ koostuu kirjallisuuteen perustuvasta teoriaosuudesta sekä empiirisestä osuudesta. Kirjallisuusosuus tarjoaa laajan katsauksen tieteelliseen kirjallisuuteen verkkomarkkinoinnin eri puolilta. Työn empiiristä osuutta varten järjestettiin survey-tutkimus. Tulokset perustuvat kyselytutkimukseen ja haastatteluihin, jotka suoritettiin suomalaisten yritysten piirissä kevään ja syksyn 2012 välisenä aikana. Data kerättiin yrityksiltä, jotka edustivat eri toimialoja. Haastattelut litteroitiin ja päätelmät tehtiin niistä. Koska kyselyyn osallistuneiden yritysten määrää jäi rajalliseksi, kyselystä saadut tulokset ovat lähinnä suuntaa antavia. Siitä huolimatta, suoritetut haastattelut vain vahvistivat kuvaa, joka saatiin kyselystä. Tuloksista ilmenee, että sähköinen markkinointi on tärkeä osa yritysten markkinointistrategiaa. Suurin osa yrityksistä näkee sosiaalisessa mediassa tapahtuvan markkinoinnin positiivisena asiana. Kuitenkin yritykset olivat epävarmoja siltä, osaavatko he tehdä tehokasta markkinointia sosiaalisessa mediassa. Tulokset näyttävät, että epävarmuuden syy löytyy yritysten rajallisesta osaamisesta ja kokemuksesta sosiaalisen median markkinoinnin alueella. Nämä ovat tietenkin asioita, jotka yritys oppii ajan kuluessa ja joissa se kokemuksen karttuessa löytää oman, itselleen sopivan tavan toimia. Tämä tuli näytetyksi myös tuloksissa

    Controlled propulsion and separation of helical particles at the nanoscale

    Get PDF
    Controlling the motion of nano and microscale objects in a fluid environment is a key factor in designing optimized tiny machines that perform mechanical tasks such as transport of drugs or genetic material in cells, fluid mixing to accelerate chemical reactions, and cargo transport in microfluidic chips. Directed motion is made possible by the coupled translational and rotational motion of asymmetric particles. A current challenge in achieving directed and controlled motion at the nanoscale lies in overcoming random Brownian motion due to thermal fluctuations in the fluid. We use a hybrid lattice-Boltzmann Molecular Dynamics method with full hydrodynamic interactions and thermal fluctuations to demonstrate that controlled propulsion of individual nanohelices in an aqueous environment is possible. We optimize the propulsion velocity and the efficiency of externally driven nanohelices. We quantify the importance of the thermal effects on the directed motion by calculating the P\'eclet number for various shapes, number of turns and pitch lengths of the helices. Consistent with the experimental microscale separation of chiral objects, our results indicate that in the presence of thermal fluctuations at P\'eclet numbers >10>10, chiral particles follow the direction of propagation according to its handedness and the direction of the applied torque making separation of chiral particles possible at the nanoscale. Our results provide criteria for the design and control of helical machines at the nanoscale

    One- and two-particle dynamics in microfluidic T-junctions

    Get PDF
    Advances in precise focusing of colloidal particles in microfluidic systems open up the possibility of using microfluidic junctions for particle separation and filtering applications. We present a comprehensive numerical study of the dynamics of solid and porous microparticles in T-shaped junctions. Good agreement with experimental data is obtained on the location of particle-separating streamlines for single solid particles with realistic parameters corresponding to the experiments. We quantify the changes in the position of the separating line for porous, partially penetrable colloids. A prediction of the full phase diagram for particle separation is presented in the case of two successive particles entering a T-junction. Our results suggest the intriguing possibility of using the one- and two-particle T-junctions as logic gates.Peer reviewe

    Biopolymer Filtration in Corrugated Nanochannels

    Get PDF
    We examine pressure-driven nonequilibrium transport of linear, circular, and star polymers through a nanochannel containing a rectangular pit with full hydrodynamic interactions and thermal fluctuations. We demonstrate that with sufficiently small pressure differences, there is contour length-dependent entropic trapping of the polymer in the pit when the pit and the polymer sizes are compatible. This is due to competition between flow and chain relaxation in the pit, which leads to a nonmonotonic dependence of the polymer mobility on its size and should aid in the design of nanofiltration devices based on the polymer size and shape.Peer reviewe

    The Hydrodynamic Radius of Particles in the Hybrid Lattice Boltzmann-Molecular Dynamics Method

    Get PDF
    We address the problem of the consistency of different measures of the hydrodynamic radius of solid point and composite solute particles incorporated into the hybrid lattice Boltzmann--molecular dynamics (LBMD) multiscale method. The coupling between the fluid and the particle phase is naturally implemented through a Stokesian type of frictional force proportional to the local velocity difference between the two. Using deterministic flow tests such as measuring the Stokes drag, hydrodynamic torques, and forces we first demonstrate that in this case the hydrodynamic size of the particles is ill-defined in the existing LBMD schemes. We then show how it is possible to effectively achieve the no-slip limit in a discrete simulation with a finite coefficient of the frictional force by demanding consistency of all these measures, but this requires a somewhat modified LB algorithm for numerical stability. Having fulfilled the criteria, we further show that in our consistent coupling scheme particles also obey the macroscopically observed fluctuation-dissipation theorem for the diffusion coefficient of a single particle without any adjustable parameters. In addition, we explicitly show that diffusion alone is not a good criterion for calibration of the frictional coupling.Peer reviewe

    Comment on ``Passage Times for Unbiased Polymer Translocation through a Narrow Pore''

    Get PDF
    One of the most fundamental quantities associated with polymer translocation through a nanopore is the translocation time τ\tau and its dependence on the chain length NN. Our simulation results based on both the bond fluctuation Monte Carlo and Molecular Dynamics methods confirm the original prediction τN2ν+1\tau\sim N^{2\nu+1}, which scales in the same manner as the Rouse relaxation time of the chain except for a larger prefactor, and invalidates other scaling claims.Comment: 1+pages, 1 Figure, Minor change

    Solution composition and particle size effects on the dissolution and solubility of a ThO2 microstructural analogue for UO2 matrix of nuclear fuel

    Get PDF
    The objective of this study was to investigate the dissolution rate of ThO2 which was synthesised to approximate, as closely as possible, the microstructure of UO2 in a nuclear fuel matrix. The optimal sintering temperature for ThO2 pellets was found to be 1750 ℃, which produced pellets with a microstructure similar to UO2 nuclear fuel pellets, with randomly oriented grains ranging in size from 10 to 30 μm. Dissolution was conducted using ThO2 particles of different size fractions (80 to 160 μm and 2 to 4 mm) in the presence and absence of carbonate, in solutions with pH from 2 to 8 and at 80 ℃. Dissolution rates were calculated from Th released from the solid phase to solution. Particles of ThO2 were also leached with 1 M HNO3 at 80 ℃ in order to investigate the morphological changes at the particle surfaces. The concentration of Th was found to be ≥ 10–9 mol/L at pH ≤ 4, lower than the theoretical solubility of crystalline ThO2. At higher pH values, from 4 to 8, the measured concentrations (10−10 to 10–12 mol/L) were between the theoretical solubility of ThO2 and Th(OH)4. Grain boundaries were shown to exert an influence on the dissolution of ThO2 particles. Using high resolution aqueous solution analysis, these data presented here extend the current understanding of Th solubility in solutio
    corecore