Archives-April 2015

This paper presents the design and implementation of sharpening of maximally flat cascaded integrator comb compensation filters. Cascaded integrator-comb (CIC) digital filters are computationally efficient implementations of low pass filters. No multiplication characteristic makes them popular in hardware devices. The modified sharpened cascaded integrator comb compensation filter is used to improve magnitude response and gain. For narrow and wide-band compensation second-order and fourth-order linear phase filters are considered. Power-of-two decimation factors of CIC filter is M and number of adders are depends upon decimation factor. Closed form equations for the computation of the filter coefficients are provided. The new technique delivers gain and stop band attenuation correction comparable to existing techniques.

The rupture of the Achilles tendon, so frequent especially in sports, has an impact which the increase was significant in the world and in our country in recent years, parallel to gain popularity in sports and the absence of means of prevention. In this retrospective study, we propose to evaluate different surgical techniques with the precision of epidemiological, clinical of the injury. This is a study of 49 patients treated between January 2008 and November 2013 in the service of Orthopaedic Traumatology CHU Ibn Sina in Rabat with a frequency of 8.5 cases per year. Our patients are divided into 47 men and 2 women, average age was 34 years with a maximum of cases between 30 and 50 years. Sports injuries were responsible for 51% of lesions with no predominance of the right side from the left side. The diagnosis was evident on clinical examination. All patients underwent conventional open surgery, the technique of Bosworth was slightly dominant. Two patients had a skin infection. No cases of postoperative pain or recurrent rupture occurred. The long-term results were evaluated according to the criteria of Mc Comis with a mean of 2.5 years. Thus, we found 95.9% excellent and good results and 4.08 of mayens results. The Achilles tendon is the largest and strongest tendon in the human body, the impact of his break has long been considered rare; the marked development of sports and leisure activities for the considerably increase. Treatment of ruptured Achilles tendon been no consensus in the light of recent clinical studies, it appears that for active patients and especially sports the treatment of choice is surgical, but the choice between conventional surgical techniques and minimally invasive remains debated. In Morocco, conventional surgical techniques are commonly used while in developed countries the minimally invasive surgery is becoming more and more its place.

Scaphoid fracture, untreated or badly treated, progresses to non-union. The treatment of scaphoid non-union is surgical. This work aims to discuss and analyze different techniques used in the treatment of scaphoid non-unions and their functional outcomes.Our study focuses on fifteen observations collected of scaphoid non-union in the Rabat Ibn Sina Hospital's department of traumatology-orthopaedic, over a period of six years (2007-2012). The analysis focused on the epidemiological, clinical, radiological data, surgical techniques and post-operative evaluation. The average age is 30 years, with a male predominance. One third of patients are manual workers, the dominant hand is affected in 67% of cases. The average trauma - treatment delay is 50.1 months. All patients presented pain and functional impairment with decreased range of motion. The X-ray made in all patients found, according to the classification of Alnot, 40% stage IIA, stage IIB 46.6%, 6.7% stage IIIB and stage IV 6.7% other. Most of our patients (13 out 15 cases) were treated by the Matti Russe operation, the iliac graft was in 11 cases, and radial in 2 cases. Resection of the first carpal row was performed in 2 cases. The evolution was marked by the disappearance of pain in 12 patients and improvements of motion in 10 patients. The Matti Russe operation is an excellent technique for treatment of scaphoid non-union without necrosis or osteoarthritis, this technique gives good functional results. However, only early diagnosis and adequate treatment of scaphoid fracture before non-union can recover normal mobility and avoid aftermaths.

What should we do when the customer service is poor or when we buy a faulty product but the store does not let us return it? We should resolve such problems through complaining effectively. Having a good command of grammatical rules and vocabulary of the language is necessary but it is not enough; the ability to produce language that is socially and culturally appropriate is a real asset in settling such problems. This study attempted to compare the pragmatic competence of Iranian EFL learners with that of native speakers of English language when they find it necessary to perform the speech act of complaint. Ten Iranian EFL students of Azad University in Lahijan served as the subjects of this study. The data were collected through comparing the complaint letters written by American native speakers with those by Iranian EFL learners. The responses were analyzed in terms of the main components of complaints. The findings indicated that American native speakers and Iranian EFL learners showed different pragmatic behaviors.

The principle of respecting human dignity plays a vital role in fundamental ethical norms related to human rights. In the first glace and through scrutiny in Iranian laws, we face with a kind of challenge in the context. For instance, some punishment such as retaliation, stoning to death, rigid body, amputation are wrong attributed to human dignity but what are the views of opponents and proponents of such punishments? On the same basis, present paper provides a brief explanation on human dignity and studies one of these punishments (retaliation).

The concentration of radon has been investigated in a university campus in Nigeria to determine the health risk of the workers in the community. Seventy- eight offices were statistically selected for measurement from all the Colleges. Measurements were performed using a passive radon dosimeters comprising (CR-39) solid state nuclear track detector, for a period of six months. The detectors were chemically etched with 6.25 M solution of NaOH at 70oC for 3 hours. The track were manually counted with microscope coupled with charged coupled digital (CCD) camera. Radon concentrations were statically determined. The mean radon concentration and the effective dose obtained in this work were 18.8 Bq m-3 and 0.02 mSv y-1 respectively. The mean value for excess lung cancer risk was estimated to be 0.08 (MPY)-1. When compared with published data and international references, the results obtained in the current study were found to be within the safe limits. Our study also revealed that radon concentrations tend to be higher on the ground floor and reduced with height due air dilution.

Closed sequential pattern mining has attracted increasing concerns in recent data mining research because it is more efficient than sequential pattern mining and produces more compact result set. Genetic algorithms perform global search and have less time complexity compared to other algorithms. In this paper, we propose a novel algorithm GCSP for mining closed sequential patterns using genetic approach. It uses an efficient fitness function to improve the performance. The results show that the proposed algorithm GCSP can find closed sequential patterns efficiently and outperforms CloSpan and ClaSP.

Mucoid cysts tibiofibular joint top (TFS) is a rare cause of nerve compression at the knee. We report the observation of a soldier of 46 years, who presented with painful swelling sitting at the top of the anterolateral aspect of the left leg third with peroneal neuralgia, lasting for four months. Clinical examination revealed an oval mass, deep, sensitive, poorly demarcated sitting on top of the anterolateral compartment of the right leg third. Ultrasound and magnetic resonance imaging (MRI) of the knee revealed an intramuscular myxoid cyst Depond joint superior tibiofibular. Electromyogram (EMG) was in favor of an invasion of the superficial peroneal nerve. A biopsy excision of the lesion was performed. Pathological examination confirmed the diagnosis of a mucoid cyst. The evolution is marked by the complete disappearance of pain, recovery of normal sensitivity and lack of recurrence after a year of decline.

The proposed system presents power-control strategies of a grid-connected hybrid generation system with versatile power transfer. This hybrid system allows maximum utilization of freely available renewable energy sources like wind and photovoltaic energies. For this, an adaptive MPPT algorithm along with standard perturbs and observes method will be used for the system. Also, this configuration allows the two sources to supply the load separately or simultaneously depending on the availability of the energy sources. The turbine rotor speed is the main determinant of mechanical output from DG energy and Solar cell operating voltage in the case of output power from solar energy.The inverter converts the DC output from non-conventional energy into useful AC power for the connected load. In order to utilization distributed generation (DG) unit interfacing converters to actively compensate harmonics, this paper proposes an enhanced current control approach, which seamlessly integrates system harmonic mitigation capabilities with the primary DG power generation function. As the proposed current controller has two well- decoupled control branches to independently control fundamental and harmonic DG currents, local nonlinear load harmonic current detection and distribution system harmonic voltage detection are not necessary for the proposed harmonic compensation method. Moreover, a closed-loop power control scheme is employed to directly derive the fundamental current reference without using any phase-locked loops (PLL). The proposed power control scheme effectively eliminates the impacts of steady-state fundamental current tracking errors in the DG units. Thus, an accurate power control is realized even when the harmonic compensation functions are activated hybrid system operates under normal conditions which include normal room temperature in the case of solar. The simulation results are presented to illustrate the operating principle, feasibility and reliability of this proposed system.

Extreme flood events in river Jhelum are a major disaster in the State of Jammu & Kashmir, India. In the present study HEC-RAS model was applied to two different reaches of river Jhelum located upstream and downstream of the historic city of Srinagar. The vulnerability of important areas and structures corresponding to 25, 50 & 100 year return period flood events was determined. The levels of the bunds of river Jhelum were found to be inadequate at many places for 100 year return period flood. The flood spill channel constructed for safeguarding Srinagar city was found to be ineffective for conveying optimized flow.