Development of a secure monitoring framework for optical disaggregated data centres

Data center (DC) infrastructures are a key piece of nowadays telecom and cloud services delivery, enabling the access and storage of enormous quantities of information as well as the execution of complex applications and services. Such aspect is being accentuated with the advent of 5G and beyond architectures, since a significant portion of the network and service functions are being deployed as specialized virtual elements inside dedicated DC infrastructures. As such, the development of new architectures to better exploit the resources of DC becomes of paramount importanceThe mismatch between the variability of resources required by running applications and the fixed amount of resources in server units severely limits resource utilization in today's Data Centers (DCs). The Disaggregated DC (DDC) paradigm was recently introduced to address these limitations. The main idea behind DDCs is to divide the various computational resources into independent hardware modules/blades, which are mounted in racks, bringing greater modularity and allowing operators to optimize their deployments for improved efficiency and performance, thus, offering high resource allocation flexibility. Moreover, to efficiently exploit the hardware blades and establish the connections across them according to upper layer requirements, a flexible control and management framework is required. In this regard, following current industrial trends, the Software Defined Networking (SDN) paradigm is one of the leading technologies for the control of DC infrastructures, allowing for the establishment of high-speed, low-latency optical connections between hardware components in DDCs in response to the demands of higher-level services and applications. With these concepts in mind, the primary objective of this thesis is to design and carry out the implementation of the control of a DDC infrastructure layer that is founded on the SDN principles and makes use of optical technologies for the intra-DC network fabric, highlighting the importance of quality control and monitoring. Thanks to several SDN agents, it becomes possible to gather statistics and metrics from the multiple infrastructure elements (computational blades and network equipment), allowing DC operators to monitor and make informed decisions on how to utilize the infrastructure resources to the greatest extent feasible. Indeed, quality assurance operations are of capital importance in modern DC infrastructures, thus, it becomes essential to guarantee a secure communication channel for gathering infrastructure metrics/statistics and enforcing (re-)configurations, closing the full loop, then addressing the security layer to secure the communication channel by encryption and providing authentication for the server and the client

Heart Disease in Adult Syrian Refugees: Experience at Jordan University Hospital

Background: Since 2011, 1.26 million Syrians have immigrated to Jordan, increasing demands on Healthcare service. Information about cardiovascular disease (CVD) in Syrian refugees in general, and specifically in Jordan, is unknown. Objectives: The study aimed to describe CVD in Syrian refugee adults who were referred to Jordan University Hospital (JUH) in terms of diagnosis, presentation, outcome, sources of funding for treatment, and to follow these patients after their discharge. Methods: From January 2012 to October 2016, retrospective analysis was performed on the data of Syrian patients who were referred to JUH. This study describes the diagnoses, treatment, and outcome. It also discusses the funding sources; a follow-up was conducted until January 2017. Results: There were 969 patients referred to JUH with CVD; median age was 56 years, 686 (72.2%) of them were males and 283 (27.8%) were females. Of the patients, 584 had hypertension (60%), 308 (31%) had diabetes mellitus, 281 (29.0%) suffered from dyslipidemia, and 237 were smokers (24%). There were 69.6% who had coronary artery disease (CAD) and 20 patients (2%) had valvular heart disease. Treatment was offered to 489 patients (49.5%), but only 322 (65.8% of treatment offered and 33.2% of referrals) of them received the intended treatment. Mortality rate was 3% and loss of follow-up was 49.2%. Funding for procedures mostly came from the Jordanian Health Aid Organization, the United Nations, NGOs, and charities. Sixty-four (13.3% of referred) patients were denied any funding during the time frame of this study. Conclusions: CVD is a major issue for both Syrian refugee patients and the Jordanian healthcare system. CAD and classic cardiovascular risk factors (specifically arterial hypertension, diabetes, and dyslipidemia) are most common in this specific population. Inadequate primary healthcare, suboptimal living conditions, lack of funding, and loss of patient contact are among the major challenges facing this vulnerable population