Dropping packets with a linear function between two configured queue thresholds in Random Early Detection (RED) model is incapable of yielding satisfactory network performance. In this article, a new enhanced and effective active queue management algorithm, termed Double Function RED (DFRED in short) is developed to further curtail network delay. Specifically, DFRED algorithm amends the packet dropping probability approach of RED by dividing it into two sub-segments. The first and second partitions utilizes and implements a quadratic and linear increase respectively in the packet dropping probability computation to distinguish between two traffic loads: low and high. The ns-3 simulation performance evaluations clearly indicate that DFRED algorithm significantly controls the average queue occupancy and yields a reasonable gain in end-to-end-delay under different network conditions.
Fluoroscopic images are a field of medical images that depends on the quality of image for correct diagnosis; the main trouble is the de-nosing and how to keep the poise between degradation of noisy image, from one side, and edge and fine details preservation, from the other side, especially when fluoroscopic images contain black and white type noise with high density. The previous filters could usually handle low/medium black and white type noise densities, that expense edge, =fine details preservation and fail with high density of noise that corrupts the images. Therefore, this paper proposed a new Multi-Line algorithm that deals with high-corrupted image with high density of black and white type noise. The experiments achieved i
... Show MoreBackground: Delayed interval cholecystectomy can be performed to overcome the logistical difficulties in performing ‘early urgent’ laparoscopic cholecystectomy (LC) within 72 hours of
admission with acute cholecystitis (AC), and to avoid earlier re-admission with recurrent AC in patients waiting ‘delayed interval’ cholecystectomy.
Objectives: To evaluate the safety and feasibility of ‘delayed urgent’ LC performed beyond 72 hours.
Methods: Patients admitted with AC were scheduled for urgent LC. Patients who underwent ‘early urgent’ LC were compared with those who had ‘delayed urgent’ surgery.
Results: Fifty consecutive patients underwent urgent LC for AC within 2 weeks of admission. Ther
Background: Myelomeningocele is the single most common congenital anomaly that affects the CNS
and vertebral column. The third world countries having a higher incidence. The management is usually
surgical with relative high incidence of complications.
Objectives: to evaluate the possible risk factors that may predispose to early wound complications of
myelomeningocele.
Methods: This prospective study was carried out in the Surgical Specialization Hospital in Medical City
Complex - Baghdad from 2009-2012. 147 cases were included in the study. Requested data were
gestational age, type of delivery, gender, age at operation, type of suturing of the wound, tension of
suturing, duration of operation, site of the lesion,
In this effort, we define a new class of fractional analytic functions containing functional parameters in the open unit disk. By employing this class, we introduce two types of fractional operators, differential and integral. The fractional differential operator is considered to be in the sense of Ruscheweyh differential operator, while the fractional integral operator is in the sense of Noor integral. The boundedness and compactness in a complex Banach space are discussed. Other studies are illustrated in the sequel.
Market share is a major indication of business success. Understanding the impact of numerous economic factors on market share is critical to a company’s success. In this study, we examine the market shares of two manufacturers in a duopoly economy and present an optimal pricing approach for increasing a company’s market share. We create two numerical models based on ordinary differential equations to investigate market success. The first model takes into account quantity demand and investment in R&D, whereas the second model investigates a more realistic relationship between quantity demand and pricing.
In this paper, introduce a proposed multi-level pseudo-random sequence generator (MLPN). Characterized by its flexibility in changing generated pseudo noise (PN) sequence according to a key between transmitter and receiver. Also, introduce derive of the mathematical model for the MLPN generator. This method is called multi-level because it uses more than PN sequence arranged as levels to generation the pseudo-random sequence. This work introduces a graphical method describe the data processing through MLPN generation. This MLPN sequence can be changed according to changing the key between transmitter and receiver. The MLPN provides different pseudo-random sequence lengths. This work provides the ability to implement MLPN practically
... Show MoreThe main idea of this paper is to define other types of a fuzzy local function and study the advantages and differences between them in addition to discussing some definitions of finding new fuzzy topologies. Also in this research, a new type of fuzzy closure has been defined, where the relation between the new type and different types of fuzzy local function has been studied