1,793 research outputs found
Contribution to Collaborative Innovation Studies: Cases of SMES Moroccan Automotive Suppliers and their Client
The aim of this work is to study how collaborative innovation succeeds between a large enterprise and SME relationship (Manufacturer-Equipment) in automotive supply chain using case studies. Data were collected from semi-structured interviews with managers in nine firms. The main intention was to understand how these companies engaged collaborative innovation and what the factors were to make it successful. The study adopted a qualitative approach in the study of these factors. The results show the importance of the internal capacities of SMEs (management style, innovation capacities, knowledge management ...) in the success and valorization of such a project. The study provides important lessons on how these relationships can impact the way businesses operate and how they innovate
Consistency of New CDF-II W Boson Mass with 123-Model
Following the recent update measurement of the W boson mass performed by the
CDF-II experiment at Fermilab which indicates deviation from the SM
prediction. As a consequence, the open question is whether there are extensions
of the SM that can carry such a remarkable deviation or what phenomenological
repercussions this has. In this paper, we investigate what the theoretical
constraints reveal about the \ott model. Also, we study the consistency of a
CDF W boson mass measurement with the 123-model expectations, taking into
account theoretical and experimental constraints. Both fit results of and
parameters before and after measurement are, moreover,
considered in this study. Under these conditions, we found that the 123-model
prediction is consistent with the measured at a
Confidence Level (CL).Comment: 17 pages, 3 figure
Tri-thermal device sizing for thermophoresis deposition measurements of nanoparticle soot aggregates
Paper presented to the 10th International Conference on Heat Transfer, Fluid Mechanics and Thermodynamics, Florida, 14-16 July 2014.Thermophoresis is the motion of particles from the hot to the cold region of a gas subjected to a thermal gradient. This phenomenon contributes to the fouling of EGR (Exhaust Gas Recycling) systems in automotive applications. The aim of this work is to develop a tri thermal device to study the collect of soot particles by thermophoresis. In this device soot particles flow in the annular space between two concentric tubes with imposed temperatures. We will use the so called penetration method which is based on the measurement of particle deposition in the test section. The precision of this method is often limited by the low deposition rates; the main objective of this study is then to size an efficient and compact device for thermophoretic deposition, while respecting mechanical and thermal constraints. We used CFD (Computational Fluid Dynamic) numerical simulations and model results to choose an optimal design of the device, which is composed of hot and cold tubes with diameter respectively equal to 87 and 85mm and with 0.5 meter long tubes.cf201
Adiabaticity Conditions for Volatility Smile in Black-Scholes Pricing Model
Our derivation of the distribution function for future returns is based on
the risk neutral approach which gives a functional dependence for the European
call (put) option price, C(K), given the strike price, K, and the distribution
function of the returns. We derive this distribution function using for C(K) a
Black-Scholes (BS) expression with volatility in the form of a volatility
smile. We show that this approach based on a volatility smile leads to relative
minima for the distribution function ("bad" probabilities) never observed in
real data and, in the worst cases, negative probabilities. We show that these
undesirable effects can be eliminated by requiring "adiabatic" conditions on
the volatility smile
Non-semisimple Lie algebras with Levi factor \frak{so}(3), \frak{sl}(2,R) and their invariants
We analyze the number N of functionally independent generalized Casimir
invariants for non-semisimple Lie algebras \frak{s}\overrightarrow{%
oplus}_{R}\frak{r} with Levi factors isomorphic to \frak{so}(3) and
\frak{sl}(2,R) in dependence of the pair (R,\frak{r}) formed by a
representation R of \frak{s} and a solvable Lie algebra \frak{r}. We show that
for any dimension n >= 6 there exist Lie algebras
\frak{s}\overrightarrow{\oplus}_{R}\frak{r} with non-trivial Levi decomposition
such that N(\frak{s}% \overrightarrow{oplus}_{R}\frak{r}) = 0.Comment: 16 page
An ABS control logic based on wheel force measurement
The paper presents an anti-lock braking system (ABS) control logic based on the measurement of the longitudinal forces at the hub bearings. The availability of force information allows to design a logic that does not rely on the estimation of the tyre-road friction coefficient, since it continuously tries to exploit the maximum longitudinal tyre force. The logic is designed by means of computer simulation and then tested on a specific hardware in the loop test bench: the experimental results confirm that measured wheel force can lead to a significant improvement of the ABS performances in terms of stopping distance also in the presence of road with variable friction coefficien
Ca. 1.65 ga mafic sills emplaced into the quartzite of Jbel Lkest from Kerdous Inlier, Anti-Atlas, West African Craton, Morocco: additional evidence that the basal part of taghdout group is nearly 1 ga older than previously thought
U-Pb baddeleyite age of a ne trending doleritic dyke swarm in the Tagragra of Akka Inlier: additional constraints on the ca. 1416-1360 Ma Mesoproterozoic magmatic event(s) in the anti-atlas of Morocco (West African Craton)
Modes of Foreign Entry under Asymmetric Information about Potential Technology Spillovers
This paper studies the effect of technology spillovers on the entry decision of a multinational enterprise into a foreign market. Two alternative entry modes for a foreign direct investment are considered: Greenfield investment versus acquisition. We find that with quantity competition a spillover makes acquisitions less attractive, while with price competition acquisitions become more attractive. Asymmetric information about potential spillovers always reduces the number of
acquisitions independently of whether the host country or the entrant has private information. Interestingly, we find that asymmetric information always hurts the entrant, while it sometimes is in favor of the host country
Almost Periodic and Asymptotically Almost Periodic Solutions of Liénard Equations
The aim of this paper is to study the almost periodic and asymptotically almost periodic solutions on (0,+1) of the Li´enard equation
x′′ + f(x)x′ + g(x) = F(t),
where F : T ! R (T = R+ or R) is an almost periodic or asymptotically almost periodic function and g : (a, b) ! R is a strictly decreasing function. We study also this problem for the vectorial Li´enard equation.
We analyze this problem in the framework of general non-autonomous dynamical systems (cocycles). We apply the general results obtained in our early papers [3, 7] to prove the existence of almost periodic (almost automorphic, recurrent, pseudo recurrent) and asymptotically almost periodic (asymptotically almost automorphic, asymptotically recurrent, asymptotically pseudo
recurrent) solutions of Li´enard equations (both scalar and vectorial)
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