Parques científicos y tecnológicos: misiones, funciones y roles en empresas de alta tecnología que operan en países emergentes

Given the vital role of Science and Technology (S&T) Parks in SME development, this article aims to study function, missions and roles of these parks in developing Iranian SMEs. For those entrepreneurs and SMEs focused on commercializing science, these parks provide essential information and advice, as well as proper equipment and services to set the ground for growth and development and an effective and independent presence in today’s competitive market. In the first phase, literature reviewed and the functions of S&T Parks in previous research extracted. Then, the extracted missions were distributed among the experts in the form of Delphi questionnaire. Finally, after three rounds of Delphi questionnaire, the missions were finalized and the functions of each mission were operationally described based on the opinions of experts.Debido al papel fundamental de los parques de ciencia y tecnología (C&T) en el desarrollo de las pymes, este artículo tiene como objetivo estudiar la función, misiones y roles de estos parques en el desarrollo de las pymes iraníes. Para estos emprendedores y pymes centradas en la comercialización de la ciencia, estos parques proporcionan información y asesoramiento esenciales, así como el equipo y los servicios adecuados para sentar las bases para el crecimiento y el desarrollo y para una presencia eficiente e independiente en el competitivo mercado actual. En la primera fase, se hizo una revisión de la literatura y se extrajeron las funciones de los parques C&T de investigaciones previas. Luego, se distribuyeron las misiones obtenidas de los expertos a través del cuestionario Delphi. Finalmente, después de tres rondas del cuestionario Delphi, las misiones se finalizaron y las funciones de cada misión se describieron operativamente con base en las opiniones de los expertos

Systems and methods for intersection management of connected autonomous vehicles

Various embodiments of an intersection management system for managing autonomous vehicles approaching an intersection in which a Time of Arrival, Velocity of Arrival, and path trajectory are calculated for each approaching vehicle are disclosed

Seeking Nash equilibrium in non-cooperative differential games

This paper aims at investigating the problem of fast convergence to the Nash equilibrium (NE) for N-Player noncooperative differential games. The proposed method is such that the players attain their NE point without steady-state oscillation (SSO) by measuring only their payoff values with no information about payoff functions, the model and also the actions of other players are not required for the players. The proposed method is based on an extremum seeking (ES) method, and moreover, compared to the traditional ES approaches, in the presented algorithm, the players can accomplish their NE faster. In fact, in our method, the amplitude of the sinusoidal excitation signal in classical ES is adaptively updated and exponentially converges to zero. In addition, the analysis of convergence to NE is provided in this paper. Finally, a simulation example confirms the effectiveness of the proposed method

Systems and methods for intersection management of connected autonomous vehicles

Various embodiments of an intersection management system for managing autonomous vehicles approaching an intersection in which a Time of Arrival, Velocity of Arrival, and path trajectory are calculated for each approaching vehicle are disclosed

Boundary Control Of Temperature Distribution In A Spherical Shell With Spatially Varying Parameters

This paper presents a solution to the control (stabilization) problem of temperature distribution in spherical shells with spatially varying properties. The desired temperature distribution satisfies the steady-state heat conduction equation. For the spherical shell under consideration, it is assumed that material properties such as thermal conductivity, density, and specific heat capacity may vary in radial, polar, and azimuthal directions of the spherical shell; the governing heat conduction equation of the shell is a second-order partial differential equation. Using Lyapunov\u27s theorem, it is shown how to obtain boundary heat flux required for producing a desired steady-state distribution of the temperature. Finally, numerical simulation is provided to verify the effectiveness of the proposed method such that by applying the boundary transient heat flux, in-domain distributed temperature converges to its desired steady-state temperature. © 2012 American Society of Mechanical Engineers

Hossein Rastgoftar Boundary Control of Temperature Distribution in a Spherical Shell With Spatially Varying Parameters

This paper presents a solution to the control (stabilization) problem of temperature distribution in spherical shells with spatially varying properties. The desired temperature distribution satisfies the steady-state heat conduction equation. For the spherical shell under consideration, it is assumed that material properties such as thermal conductivity, density, and specific heat capacity may vary in radial, polar, and azimuthal directions of the spherical shell; the governing heat conduction equation of the shell is a second-order partial differential equation. Using Lyapunov's theorem, it is shown how to obtain boundary heat flux required for producing a desired steady-state distribution of the temperature. Finally, numerical simulation is provided to verify the effectiveness of the proposed method such that by applying the boundary transient heat flux, in-domain distributed temperature converges to its desired steady-state temperature

A Dependable Detection Mechanism for Intersection Management of Connected Autonomous Vehicles (Interactive Presentation)

Traffic intersections will become automated in the near future with the advent of Connected Autonomous Vehicles (CAVs). Researchers have proposed intersection management approaches that use the position and velocity that are reported by vehicles to compute a schedule for vehicles to safely and efficiently traverse the intersection. However, a vehicle may fail to follow intersection manager (IM) scheduling commands due to erroneous sensor readings or unexpected incidents like engine failure, which can cause an accident if the failure happens inside the intersection. Additionally, rogue vehicles can take the advantage of the IM by providing false position and velocity data and cause traffic congestion. In this paper, we present a new technique and infrastructure to detect anomalies and inform the IM. We propose a vision system that can monitor the position of incoming vehicles and provide real-time data for the IM. The IM can use this data to verify the trajectories of CAVs and broadcast a warning when a vehicle fails to follow commands, making the IM more resilient against attacks and false data. We implemented our method by building infrastructure for an intersection with 1/10 scale model CAVs. Results show our method, when combined with an IM dataflows, is more dependable in the event of a failure compared to an IM without it

Is there a protective effect with remote ischemic preconditioning on contrast-induced acute renal injury after coronary angiography in low-risk patients?

Introduction: Contrast-induced acute kidney injury (CIN-AKI) is a serious complication of coronary angiography. Given the weaknesses in the common protective methods used to prevent CIN-AKI, a safe and effective strategy is needed. RIPC has been shown to have a nephroprotective effect. Objectives: We aimed to determine the protective effect of RIPC on CIN-AKI after angiography or percutaneous coronary intervention (PCI) in low-risk patients. Patients and Methods: In our study, 140 low-risk patients who needed angiography or PCI, were assigned to either RIPC or control group. In each group, serum creatinine and urinary neutrophil gelatinaseassociated lipocalin (uNGAL) were measured before the procedure. Serum creatinine was measured daily for 2 days and uNGAL was measured 6 and 24 hours after the procedure. Diagnosis of AKI was, according to the Kidney Disease; Improving Global Outcomes (KDIGO) criteria (2012). Results: The mean age in the remote ischemic preconditioning (RIPC) group was 56.8 ± 11.4 years and 56.3 ± 11.8 years in the control group. We observed no significant difference regarding patient’s characteristic and renal biomarkers at baseline. There was no significant difference in the incidence of AKI (P = 0.116). The uNGAL increased by 36.2% 6-hour after the procedure in patients with AKI, while at the same time, this biomarker increased only by 4.3% in patients without AKI. Conclusion: We concluded that RIPC, with 3 cycles of 5-minute ischemia and 5-minute reperfusion, did not decrease CIN-AKI or altering renal biomarkers course in low-risk patients undergoing coronary angiography or PCI. Additionally, uNGAL, seems to be an appropriate biomarker for early diagnosis of CIN-AKI, 6 hours after contrast media exposure