In the wake of meltdowns at WorldCom, Tyco, and Enron, enormous attention has been focused on the companies' boards. It seems inconceivable that business disasters of such magnitude could happen without gross or even criminal negligence on the part of board members. And yet a close examination of those boards reveals no broad pattern of incompetence or corruption. In fact, they followed most of...

The rapid Arab-Islamic conquest during the early Middle Ages led to major political and cultural changes in the Mediterranean world. Although the early medieval Muslim presence in the Iberian Peninsula is now well documented, based in the evaluation of archeological and historical sources, the Muslim expansion in the area north of the Pyrenees has only been documented so far through textual sou...

The “SIG Pyrénées” is a socio-economic observatory of the Pyrenees Mountains. It has been gradually established over the last ten years by the Pyrenees Association for Mountain Economics (Assemblée Pyrénéenne d'Economie Montagnarde or APEM), an association created by the different consular structures of the Pyrenees Mountains. We will analyse it in its capacity as a territorial observatory, tha...

The landscape pattern in the high-mountains is significantly more complex than in the lowlands. Theories, models and methods which are usually applied in landscape studies (such as the geo-complex model and the patch-corridor-matrix model) are inadequate or insufficient in regard to high-mountains. The altitude is the main factor determining the multi-dimensionality of the high-mountain landsca...

We investigate the sources of changes in GDP volatility observed from 1966 to 2018. develop a general equilibrium model and calibrate it US data characterize contribution micro level productivity shocks, inter-sectoral linkages households' behavior aggregate volatility. Our results show that sectoral played an important role shaping asymmetries economy had different impact on over time. Moreove...

Though leiomyosarcoma usually occurs in the gastrointestinal tract and uterus, it rarely occurs in the wall of large veins and arteries. We present a case of primary leiomyosarcoma arising in the great saphenous vein of the left inner thigh and spreading for some extent along the vein in a 54 year old female. Diagnosis was confirmed by desmin stain and electron microscopy. Postoperative course ...

arterial sclerosis has been extensively described but reports on venous sclerosis are very sparse. phlebosclerosis refers to the thickening and hardening of the venous wall. despite its morphological similarities with arteriosclerosis and potential morbid consequences, phlebosclerosis has gained only little attention. we report a 72 year old male with paralysis and atrophy of the right leg due ...