The mediation role of supply chain agility on supply chain orientation-supply chain performance link

This study aims to analyze the supply chain performance mediation on the relationship between supplier flexibility, supply agility, and company performance. The population in this study were 100 broilers in the districts / cities in Banten Province. The data to be used in this study are primary data, through sending questionnaires. Development of theoretical models with five hypotheses processed in the analysis using SmartPLS Software version 3.0.m3. The results showed that supplier flexibility and supply agility have a positive and significant effect on company performance, supplier flexibility and supply agility have a positive and significant effect on supply chain performance and supply chain performance has a positive and significant effect as an intervening variable to the company performance. Supply chain mediation has an important role in integrating production processes from upstream to downstream, including establishing good relations between businesses involved in supply chain management to improve the company's performance.

A macroscopic viscoelastic model of magnetorheological elastomer with different initial particle chain orientation angles based on fractional viscoelasticity

In this paper, a macroscopic viscoelastic modeling method for magnetorheological elastomer (MRE) based on fractional derivative model is presented to describe the dynamic viscoelastic properties of MRE with different initial particle chain orientation angles. The angle between the particle chain and the applied magnetic field is used as an indicator to describe the directionality of the particle chain. MRE samples with different initial inclination angles have been designed and fabricated. The dynamic viscoelastic properties of different MRE samples under shear working mode were measured using a parallel plate rheometer. The dynamic viscoelastic properties of MRE with different initial inclination angles are analyzed under the test conditions of different strain amplitude, frequency and magnetic flux density. The test results show that the initial inclination angle of the particle chain in the MRE has significant effect on the dynamic viscoelastic properties of the MRE. A polynomial function is used to describe the relationship between the initial particle chain orientation angle and the magneto-induced modulus of MRE. A phenomenological model of magneto-induced modulus is established based on the fractional derivative model. The model parameters are identified using the nonlinear least square method. The predicted values of the model are in good agreement with the experimental results, indicating that the model can well describe the dynamic viscoelastic properties of MRE.

Polarized X-ray scattering measures molecular orientation in polymer-grafted nanoparticles

Polymer chains are attached to nanoparticle surfaces for many purposes, including altering solubility, influencing aggregation, dispersion, and even tailoring immune responses in drug delivery. The most unique structural motif of polymer-grafted nanoparticles (PGNs) is the high-density region in the corona where polymer chains are stretched under significant confinement, but orientation of these chains has never been measured because conventional nanoscale-resolved measurements lack sensitivity to polymer orientation in amorphous regions. Here, we directly measure local chain orientation in polystyrene grafted gold nanoparticles using polarized resonant soft X-ray scattering (P-RSoXS). Using a computational scattering pattern simulation approach, we measure the thickness of the anisotropic region of the corona and extent of chain orientation within it. These results demonstrate the power of P-RSoXS to discover and quantify orientational aspects of structure in amorphous soft materials and provide a framework for applying this emerging technique to more complex, chemically heterogeneous systems in the future.

Effect of Stretching Rate on Tensile Response and Crystallization Behavior of Crosslinked Natural Rubber

The performance of natural rubber (NR) relies heavily on the microstructural changes during deformation. This has brought to significant change in the stress response of NR. Besides, the stretching rate may also affect the stress response of NR. In this study, effects of stretching rate on tensile deformation and strain-induced crystallization of crosslinked NR were investigated. Results indicated that increasing the strain rate has increased the stress at given strain where the onset of strain-induced crystallization was shifted to a lower strain. The crystallinity of the crosslinked NR was shown to be higher at a high stretching rate and it corresponded well with the tensile response. The results clearly confirm that chain orientation and crystallization became stronger with increasing deformation rate. The study also suggests that the deformation could improve distribution of crosslinked network structures.

Managerial political skill and achieved supply chain integration: the mediating effects of supply chain orientation and organizational politics

Purpose Drawing on social exchange theory, social capital theory, and perspectives of political influence in organizations, this study develops and tests a model in which managerial political skill is associated with internal, supplier and customer supply chain integration through two mediating mechanisms: facilitating a supply chain orientation and mitigating self-serving politics. Design/methodology/approach Data were collected from three independent samples, one for each achieved state of integration (i.e. internal, customer and supplier) (ninternal = 225; ncustomer = 225; nsupplier = 225; N = 675). Hypotheses were tested with structural equation modeling and indirect effects analysis. The potential impact of unmeasured endogenous factors was mitigated through appropriate survey design, statistical control, marker variable analysis and instrument variable usage. Findings Managerial political skill exhibited a positive, direct relationship with achieved internal and supplier integration. Supply chain orientation partially mediated the relationship for achieving integration with both customers and suppliers. Self-serving organizational politics was not associated with achieving internal, customer or supplier integration. Research limitations/implications By demonstrating the importance of political influence in achieving supply chain integration, the findings support the role of managerial social capital in the underlying social exchange processes that drive integration. Originality/value Despite the fundamental role of informal, social dynamics in supply chain integration, past research has largely focused on either the technical prowess of middle managers or the political skill of executives in supporting integration. The present study explicates the critical role of middle management political skill in actually achieving supply chain integration.