Service Ecosystem Emergence from Primitive Actors in Service Dominant Logic: An Exploratory Simulation Study

Service-dominant (S-D) logic has been proposed as a theoretical foundation for understanding economic exchange and value cocreation from a service-for-service perspective. In the S-D logic framework, all economic entities are commonly represented as resource-integrating, service-providing actors, relying primarily on operant resources, such as skills and knowledge. Service exchange is coordinated by institutional arrangements, which form the bases of service ecosystems, the unit of analysis of value cocreation. Institutional arrangements and service ecosystems emerge from the resource integrating and service-exchanging activities of the actors. This paper reports a preliminary investigation of the emergence of these structures from basic actor relationships, through agent-based simulation. The simulations under different conditions show that a collection of agent interactions generates systemic behavior typical for service ecosystems. This paper also suggests directions for future research

Service Ecosystems Emergence and Interaction: A Simulation Study

This paper describes the examination of emerging institutions and phase transition of service ecosystems in value cocreation processes under the basic tenets of service-dominant logic. We conducted several computational experiments with an agent-based model, in which we represented the generic actors and their operant resources, and examined their interactive behaviors in agent-based simulations. In the simulations, actors started changing their social properties from self-supporting individuals to reciprocal resource integraters. During the transaction, the actors increasingly specialized into specific roles and clusters of actors with the identical roles emerged – pointing towards processes of institutionalization, and dependent on the conditions of land fertility levels. Several phase transitions were observed in emerging service ecosystems, which were supported by complex structures of exchange and collaboration networks

Differences in growth-economics of fast vs. slow growing grass species in response to temperature and nitrogen limitation individually, and in combination

Background Fast growing invasive alien species are highly efficient with little investment in their tissues. They often outcompete slower growing species with severe consequences for diversity and community composition. The plant economics trait-based approach provides a theoretical framework, allowing the classification of plants with different performance characteristics. However, in multifaceted background, this approach needs testing. The evaluation and prediction of plant performance outcomes in ecologically relevant settings is among the most pressing topics to understand and predict ecosystem functioning, especially in a quickly changing environment. Temperature and nutrient availability are major components of the global environmental change and this study examines the response of growth economic traits, photosynthesis and respiration to such changes for an invasive fast-growing (Bromus hordaceus) and a slow-growing perennial (Bromus erectus) grass species. Results The fully controlled growth chamber experiment simulated temperature-and changes in nitrogen availability individually and in combination. We therefore provide maximum control and monitoring of growth responses allowing general growth trait response patterns to be tested. Under optimal nitrogen availability the slow growing B. erectus was better able to handle the lower temperatures (7 degrees C) whilst both species had problems at higher temperatures (30 degrees C). Stresses produced by a combination of heat and nutrient availability were identified to be less limiting for the slow growing species but the combination of chilling with low nutrient availability was most detrimental to both species. Conclusions For the fast-growing invader B. hordeaceus a reduction of nitrogen availability in combination with a temperature increase, leads to limited growth performance in comparison to the slow-growing perennial species B.erectus and this may explain why nutrient-rich habitats often experience more invasion than resource-poor habitats

Emergence in marketing: an institutional and ecosystem framework

Many core marketing concepts (e.g., markets, relationships, customer experience, brand meaning, value) concern phenomena that are difficult to understand using linear and dyadic approaches, because they are emergent. That is, they arise, often unpredictably, from interactions within complex and dynamic contexts. This paper contributes to the marketing discipline through an explication of the concept of emergence as it applies to marketing theory. We accomplish this by first drawing on the existing literature on emergence in philosophy, sociology, and the theory of complex adaptive systems, and then link and extend this understanding to marketing using the theoretical framework of service-dominant (S-D) logic, particularly as enhanced by its service-ecosystems and institutionalization perspectives. Our work recognizes both emergence and institutionalization as integral or interrelated processes in the creation, maintenance, and disruption of markets and marketing phenomena. We conclude by discussing implications for marketing research and practice

Stroke rehabilitation and research: consideration of the role of the cortico-reticulospinal system

A cerebrovascular accident, otherwise known as stroke, has the potential to damage multiple areas within the brain affecting descending motor control via a multitude of pathways resulting in a wide variety of movement problems. The cortico-reticulospinal system, one of the largest motor systems, is frequently affected, compromising its output, resulting in postural control deficits. The identification of clinically relevant instruments and scales to document and evaluate recovery in post-stroke patients is vital. However, the availability of such measures and scales which take into consideration the role of postural control as an integral component of functional movement performance are scarce. This paper will critically discuss the importance of integrating current neuroscience and motor control knowledge in order to better understand and describe the clinical presentation of persons post-stroke such that the effectiveness of stroke rehabilitation can be appropriately measured.info:eu-repo/semantics/publishedVersio

D'Pasadita S.A : Minisuper drive - THRU - 24hrs

Seminario Desarrollo de Emprendedores. 2011. Carrera Administración de Empresas. Docente MAE. Vegacruz, Carlos.Minisúper con un servicio de drive thru. Este contará con todos los productos básicos y de mayor consumo, como también productos farmacéuticos elementales y materiales de librería que necesiten los consumidores. Posee pantallas digitales para que el cliente seleccione el producto que desea consumir, donde también estará reflejado el precio, las ofertas y otros datos principales. Cuenta con servicio de 24 horas, los 7 días de la semana. Tiene 2 cajas rápidas (dos para hacer pedidos, dos cajas de cobro y 2 cajas para la entrega del pedido). Está ubicado en el Km. 6 ½ Carretera a Masaya, contiguo a Movistar. El sitio elegido posee tres vías para posibles accesos

Star formation concentration as a tracer of environmental quenching in action: a study of the Eagle and C-Eagle simulations

We study environmental quenching in the Eagle}/C-Eagle cosmological hydrodynamic simulations over the last 11 Gyr (i.e. $z=0-2$). The simulations are compared with observations from the SAMI Galaxy Survey at $z=0$. We focus on satellite galaxies in galaxy groups and clusters ($10^{12}\,\rm M_{\odot}$ $\lesssim$ $M_{200}$ < $3 \times 10^{15}\, \rm M_{\odot}$). A star-formation concentration index [$C$-index $= \log_{10}(r_\mathrm{50,SFR} / r_\mathrm{50,rband})$] is defined, which measures how concentrated star formation is relative to the stellar distribution. Both Eagle/C-Eagle and SAMI show a higher fraction of galaxies with low $C$-index in denser environments at $z=0-0.5$. Low $C$-index galaxies are found below the SFR-$M_{\star}$ main sequence (MS), and display a declining specific star formation rate (sSFR) with increasing radii, consistent with ``outside-in'' environmental quenching. Additionally, we show that $C$-index can be used as a proxy for how long galaxies have been satellites. These trends become weaker at increasing redshift and are absent by $z=1-2$. We define a quenching timescale $t_{\rm quench}$ as how long it takes satellites to transition from the MS to the quenched population. We find that simulated galaxies experiencing ``outside-in'' environmental quenching at low redshift ($z=0\sim0.5$) have a long quenching timescale (median $t_{\rm quench}$ > 2 Gyr). The simulated galaxies at higher redshift ($z=0.7\sim2$) experience faster quenching (median $t_{\rm quench}$ < 2Gyr). At $z\gtrsim 1-2$ galaxies undergoing environmental quenching have decreased sSFR across the entire galaxy with no ``outside-in'' quenching signatures and a narrow range of $C$-index, showing that on average environmental quenching acts differently than at $z\lesssim 1$.Comment: 21 pages, 17 figures

Capsular Typing Method for Streptococcus agalactiae Using Whole-Genome Sequence Data.

Group B streptococcus (GBS) capsular serotypes are major determinants of virulence and affect potential vaccine coverage. Here we report a whole-genome-sequencing-based method for GBS serotype assignment. This method shows strong agreement (kappa of 0.92) with conventional methods and increased serotype assignment (100%) to all 10 capsular types

The SAMI Galaxy Survey: Environmental analysis of the orbital structures of passive galaxies

Most dynamical models of galaxies to date assume axisymmetry, which is not representative of a significant fraction of massive galaxies. We have built triaxial orbit-superposition Schwarzschild models of galaxies observed by the SAMI Galaxy Survey, in order to reconstruct their inner orbital structure and mass distribution. The sample consists of 153 passive galaxies with total stellar masses in the range $10^{9.5}$ to $10^{12} M_{\odot}$. We present an analysis of the internal structures and intrinsic properties of these galaxies as a function of their environment. We measure their environment using three proxies: central or satellite designation, halo mass and local $5^{th}$ nearest neighbour galaxy density. We find that although these intrinsic properties correlate most strongly with stellar mass, environment does play a secondary role: at fixed stellar mass, galaxies in the densest regions are more radially anisotropic. In addition, central galaxies, and galaxies in high local densities show lower values of edge-on spin parameter proxy \lam. We also find suggestions of a possible trend of the fractions of orbits with environment for lower-mass galaxies (between $10^{9.5}$ and $10^{11} M_{\odot}$) such that, at fixed stellar mass, galaxies in higher local densities and halo mass have higher fractions of hot orbits and lower fractions of warm orbits. Our results demonstrate that after stellar mass, environment does play a role in shaping present-day passive galaxies.Comment: 21 pages. Accepted for publication in MNRA