Publications by authors named "Deac D"

Embedded Operating Systems (OSs) are often developed in the C programming language. Developers justify this choice by the performance that can be achieved, the low memory footprint, and the ease of mapping hardware to software, as well as the strong adoption by industry of this programming language. The downside is that C is prone to security vulnerabilities unknowingly introduced by the software developer.

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The Internet of Things (IoT) facilitates the integration of diverse devices, leading to the formation of networks such as Low-power Wireless Personal Area Networks (LoWPANs). These networks have inherent constraints that make header and payload compression an attractive solution to optimise communication. In this work, we evaluate the performance of Generic Header Compression (6LoWPAN-GHC), defined in RFC 7400, for IEEE 802.

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Message Queuing Telemetry Transport (MQTT) is a lightweight publish/subscribe protocol, which is currently one of the most popular application protocols in Internet of Things (IoT) thanks to its simplicity in use and its scalability. The secured version, MQTTS, which combines MQTT with the Transport Layer Security (TLS) protocol, has several shortcomings. It only offers one-to-one security, supports a limited number of security features and has high computation and communication costs.

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Wireless sensor networks (WSNs) are becoming increasingly prevalent in numerous fields. Industrial applications and natural-disaster-detection systems need fast and reliable data transmission, and in several cases, they need to be able to cope with changing traffic conditions. Thus, time-slotted channel hopping (TSCH) offers high reliability and efficient power management at the medium access control (MAC) level; TSCH considers two dimensions, time and frequency when allocating communication resources.

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Smart buildings benefit from IEEE 802.15.4e time slotted channel hopping (TSCH) medium access for creating reliable and power aware wireless sensor and actuator networks (WSANs).

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Background: Fast-track protocols are followed by an enhanced recovery, early return to bowel function and to complete nutrition, and a reduced hospital stay. Our study was designed to implement fast-track protocol in our university hospital.

Methods: The 96 consecutive patients with colorectal neoplasm included in the study were randomized in two equal groups: group 1 (FT) included patients undergoing colorectal surgery in a fast-track protocol, and group 2 (C) included patients undergoing colorectal surgery with a conventional care protocol.

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Unlabelled: Numerous studies have shown that TIVA is followed by a significant reduction in the incidence of PONV in day-case surgery, including laparoscopic cholecystectomy, where the incidence of PONV can reach 70% according to some studies. TCI is the TIVA technique that maintain a constant plasma concentration due to pharmacokynetic models incorporated in TCI device that inject the anesthetic agent. Besides implementing TIVA-TCI in clinical practice in Romania, our study was designed to evaluate the impact of TIVA-TCI on postoperative outcome and our patient satisfaction after laparoscopic cholecystectomy.

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The probes sampled from patients, in hospital environment, sterility control departments, air microflora, medical personnel, were tested for the global number of germs and for the positivity registered. Between 1983 and 1994, 12,785 samples for microbiological examination were sampled, aiming to give emphasis to the nosocomial from units like: internal medicine and cardiology; surgery and intensive care; neonatology and pediatrics; obstetrics and gynecology. 7,430 samples were microbiologically positive, proving the potential circulation of facultatively aerobic and aerobic-anaerobic bacterial populations.

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The human adult mitral valve, with a mean diastolic area of up to 7.6 cm2, excess leaflet surface area for coaptation in systole, mitral annulus-papillary muscle continuity, and systolic constriction of the posterior left ventricular wall around the mitral annulus functions in concert with other components of the left side of the heart. Mitral valve replacement with an artificial valve that interferes with the normal physiology could account for less than adequate late results.

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One of the factors limiting the duration of rat liver storage is the excessive accumulation of catabolites in the perfusion medium. In view of obtaining of an efficient depuration the authors have introduced a new circuit allowing for the concomittant perfusion of the liver and of the kidneys. The excretion effort of the kidneys is assessed by the estimation of urea nitrogen in the perfusion medium and in the urine collected over the entire duration of the experiment.

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