Interorganizational relationship dynamics and repair processes

© 2018 Dr. Ali ShamsollahiThere is a consensus among scholars that interorganizational relationships (IOR) are dynamic and subject to change over time, yet much of the available theory used to analyse IOR, such as transaction cost economics or social exchange theory, is stubbornly static. This dissertation aims to address this shortcoming through two studies: (1) a comprehensive literature review synthesizing themes from an emergent literature on IOR dynamics; and (2) a grounded theory study on IOR repair processes which challenges some existing assumptions about the nature of relationship transgressions and repair, while providing some extensions to transaction cost theory

Bayesian denoising framework of phonocardiogram based on a new dynamical model

International audienceIn this paper, we introduce a model-based Bayesian denoising framework for phonocardiogram (PCG) signals. The denoising framework is founded on a new dynamical model for PCG, which is capable of generating realistic synthetic PCG signals. The introduced dynamical model is based on PCG morphology and is inspired by electrocardiogram (ECG) dynamical model proposed by McSharry et al. and can represent various morphologies of normal PCG signals. The extended Kalman smoother (EKS) is the Bayesian filter that is used in this study. In order to facilitate the adaptation of the denoising framework to each input PCG signal, the parameters are selected automatically from the input signal itself. This approach is evaluated on several PCGs recorded on healthy subjects, while artificial white Gaussian noise is added to each signal, and the SNR and morphology of the outputs of the proposed denoising approach are compared with the outputs of the wavelet denoising (WD) method. The results of the EKS demonstrate better performance than WD over a wide range of PCG SNRs. The new PCG dynamical model can also be employed to develop other model-based processing frameworks such as heart sound segmentation and compression

A dynamical model for generating synthetic Phonocardiogram signals.

International audienceIn this paper we introduce a dynamical model for Phonocardiogram (PCG) signal which is capable of generating realistic synthetic PCG signals. This model is based on PCG morphology and consists of three ordinary differential equations and can represent various morphologies of normal PCG signals. Beat-to-beat variation in PCG morphology is significant so model parameters vary from beat to beat. This model is inspired of Electrocardiogram (ECG) dynamical model proposed by McSharry et al. and can be employed to assess biomedical signal processing techniques

Production of fucoxanthin by the microalga Tisochrysis lutea: A review of recent developments

Fucoxanthin is the major abundant xanthophyll in macro- and micro-algae as a component of photosynthetic light-harvesting complexes for photosynthesis and photoprotection. Nowadays, widespread application of fucoxanthin in food industry, pharmaceutical, and medical purposes are increasing. The current issue attracts the attention of researchers for producing of carotenoid from its natural resources, especially algae. Againts macroalgae, microalgae have rapid growth with the same source of food. In addition, they can grow from variety of situations and environmental conditions to produce a specific biochemical product. Microalgae, e.g. Tisochrysis lutea (T. lutea), can be cultivated under controlled conditions, low cost, and higher concentration of fucoxanthin. This review presents some of nutraceutical effects of fucoxanthin for human health and then, in particular, recent biotechnological developments in bioprocessing of this valuable product including, cultivation, harvesting, extraction, and purification, from T. lutea

Prosesseierrollen i et alliansesamarbeid : en kvalitativ studie av prosesseierrollen i Sparebank1 Telemark

Denne oppgaven har som mål å studere og beskrive prosesseierrollen i et alliansesamarbeid. Studien er utført som en kvalitativ studie av Sparebank1 Telemarks som er en del av Sparebank1 Alliansen. Innsikten er oppnådd ved å intervjue alle prosesseierne i organisasjonen. Utredningen beskriver prosessarbeidet i alliansen og organiseringen av dette, organiseringen av prosesseierrollen i Sparebank1Telemark og en analyse av hvilken myndighet, innflytelse og hvilket ansvaret som følger med rollen. Studien beskriver også fordeler og ulemper ved prosesseierollen slik den er utformet i alliansesamarbeidet i dag. Denne utredningen er den eneste av sitt slag som ser på prosesseierrollen i et alliansesamarbeid som også er et prosessamarbeid