• Title/Summary/Keyword: Arab

Search Result 301, Processing Time 0.028 seconds

Arbitration in Egypt in the Realm of the Arab Spring

  • Selim, Ismail
    • Journal of Arbitration Studies
    • /
    • v.23 no.3
    • /
    • pp.169-183
    • /
    • 2013
  • Egypt has gone through a major metamorphosis following the Egyptian Revolution that began on 25 January 2011. The aim of this article is to analyze the influence of the aforementioned metamorphoses on the Egyptian Arbitration Law and Practice and to shed light on the recent developments of the latter. Whilst positive legislative amendments have been recently achieved with regards to enforcement of arbitral awards, it is crystal clear that the January 2011 Revolution has negatively impacted the jurisprudence of the Administrative Court of the Conseil d'Etat which has annulled several arbitration clauses enshrined in contracts related to privatization. However, save for disputes arising from administrative contracts, Egypt has been and shall remain a friendly seat of Arbitration as it possesses an arbitration-friendly legislation, its Ordinary Judicial Courts are familiarized with international arbitration practice and it has a prominent and famous arbitration Centre.

  • PDF

Power Management of Open Winding PM Synchronous Generator for Unbalanced Voltage Conditions

  • EL-Bardawil, Ashraf;Moussa, Mona Fouad
    • Journal of Power Electronics
    • /
    • v.16 no.6
    • /
    • pp.2192-2201
    • /
    • 2016
  • Wind energy is currently the fastest-growing electricity source worldwide. The cost efficiency of wind generators must be high because these generators have to compete with other energy sources. In this paper, a system that utilizes an open-winding permanent-magnet synchronous generator is studied for wind-energy generation. The proposed system controls generated power through an auxiliary voltage source inverter. The VA rating of the auxiliary inverter is only a fraction of the system-rated power. An adjusted control system, which consists of two main parts, is implemented to control the generator power and the grid-side converter. This paper introduces a study on the effect of unbalanced voltages for the wind-generation system. The proposed system is designed and simulated using MATLAB/Simulink software. Theoretical and experimental results verify the validity of the proposed system to achieve the power management requirements for balanced and unbalanced voltage conditions of the grid.

Numerical investigation of an add-on thrust vector control kit

  • AbuElkhier, Mohamed G.;Shaaban, Sameh;Ahmed, Mahmoud Y.M.
    • Advances in aircraft and spacecraft science
    • /
    • v.9 no.1
    • /
    • pp.39-57
    • /
    • 2022
  • Instead of developing new guided missiles, converting unguided missile into guided ones by adding guidance and controlkits hasbecome aglobaltrend.Ofthemost efficient andwidelyused thrust vector control(TVC) techniquesin rocketry isthe jet vanes placed inside the nozzle divergentsection. Upon deflecting them, lift created on the vanesistransferred to the rocket generating the desired control moment. The presentstudy examinesthe concept of using an add-on jet vaneTVC kit to a plain nozzle.The impact of adding the kit with different vaneslocations and deflectionanglesisnumericallyinvestigatedbysimulatingtheflowthroughthenozzlewiththekit.Twohingelocations are examined namely, at 24% and 36% of nozzle exit diameter. For each location, angles of deflection namely 0°, 5°, 10°, and 15° are examined. Focus is made on variation of control force, thrust losses, lift and drag on vanes, jet inclination, and jetflow structure withTVCkit design parameters.

Suggested Integrative Approach for Hand Abscess with Cupping Therapy: a case study

  • Emad Ahmed Fathy Hussein;Shahira Hassan Ibrahim Negm;Tabish Ishaq Shaikh;Ahmed Helmy Saleh
    • Journal of Pharmacopuncture
    • /
    • v.26 no.1
    • /
    • pp.94-98
    • /
    • 2023
  • A forty-three-year-old male patient was diagnosed with an acute abscess in the dorsum of the right hand. On the 5th day of conventional pharmacological therapy the patient was still suffering, and was referred to the Outpatient department (OPD) to evacuate and drain the abscess and treat the edema around the area with Hijama (wet cupping therapy, WCT). The hand abscess was successfully cured within a week using an integrative approach of wet cupping therapy together with conventional drug therapy.

A Fault Tolerant Control Technique for Hybrid Modular Multi-Level Converters with Fault Detection Capability

  • Abdelsalam, Mahmoud;Marei, Mostafa Ibrahim;Diab, Hatem Yassin;Tennakoon, Sarath B.
    • Journal of Power Electronics
    • /
    • v.18 no.2
    • /
    • pp.558-572
    • /
    • 2018
  • In addition to its modular nature, a Hybrid Modular Multilevel Converter (HMMC) assembled from half-bridge and full-bridge sub-modules, is able to block DC faults with a minimum number of switching devices, which makes it attractive for high power applications. This paper introduces a control strategy based on the Root-Least Square (RLS) algorithm to estimate the capacitor voltages instead of using direct measurements. This action eliminates the need for voltage transducers in the HMMC sub-modules and the associated communication link with the central controller. In addition to capacitor voltage balancing and suppression of circulating currents, a fault tolerant control unit (FTCU) is integrated into the proposed strategy to modify the parameters of the HMMC controller. On advantage of the proposed FTCU is that it does not need extra components. Furthermore, a fault detection unit is adapted by utilizing a hybrid estimation scheme to detect sub-module faults. The behavior of the suggested technique is assessed using PSCAD offline simulations. In addition, it is validated using a real-time digital simulator connected to a real time controller under various normal and fault conditions. The proposed strategy shows robust performance in terms of accuracy and time response since it succeeds in stabilizing the HMMC under faults.

A Study on Woman Growth-Narrative and Modes of Expression Graphic Novel 『Habibi』 (그래픽 노블 『하비비』의 표현양식과 여성 성장 서사 연구)

  • Lee, Young-Soo
    • Cartoon and Animation Studies
    • /
    • s.43
    • /
    • pp.231-254
    • /
    • 2016
  • The graphic novel is seemed different from comics in two aspects, visual expression and narrative value. However, they are ambiguous standards, so it needs to research each works of graphic novel deeper. Then this paper studied both of visual expression and narrative in Craig Thompson's "Habibi" that has been recognized a fine graphic novel. As the research about how the modes of expression that an American author choose on purpose to represent an arab female are related with narrative, it will get the point of narrative strategy that graphic novel can have potentially. So It studied new modes of expression as focusing on imagination of arab letters and woman growth-narrative by using Gayle Rubin's 'traffic in women' theory, and how it was related with modes of expression in graphic novel. This paper will be helpful for broadening spectrum of expression in graphic novel as comics media having own narrative form and studying graphic narrative potential.

Effectiveness of premarital screening program for thalassemia and sickle cell disorders in Ras Al Khaimah, United Arab Emirates

  • Salama, Rasha Aziz Attia;Saleh, Abeer Kamal
    • Journal of Genetic Medicine
    • /
    • v.13 no.1
    • /
    • pp.26-30
    • /
    • 2016
  • Purpose: Genetic disorders can be prevented by basic public health measures and activities that focus primarily on education and approaches in Primary Health Care. Premarital screening is one such approach that can identify asymptomatic carriers of hemoglobinopathies and provide genetic counseling to couples for a healthy reproductive life. This study aimed to estimate the prevalence of beta thalassemia and sickle cell disorders in the adult population screened as a part of the United Arab Emirates Premarital Screening Program and to measure the effectiveness of the program in decreasing high-risk marriages in Ras Al Khaimah (RAK). Materials and Methods: A retrospective, population-based study was conducted at the RAK Primary Health Care Center, where the National Premarital Screening Program is implemented. The study included data collected from the premarital screening records of all couples who had applied for a marriage license during 2008-2015. Results: Of the 17,826 individuals screened during the studied period, 4.02% (717) were diagnosed as positive for hemoglobinopathies. The prevalence of beta thalassemia and sickle cell disorders among the total study population was 2.98% and 1.05%, respectively. The hemoglobinopathy trait was more prevalent than the disease. Among these 8,913 couples who were issued certificates for compatibility based on screening tests, 28 (0.31%) couples were declared high-risk (unmatched). Seventy percent of these unmatched couples reported consanguineous marriages. Conclusion: The program was successful in achieving its objective of identifying high-risk marriages. In spite of the counseling, however, all of the high-risk couples still married each other.

Adaptive Mitigation of Narrowband Interference in Impulse Radio UWB Systems Using Time-Hopping Sequence Design

  • Khedr, Mohamed E.;El-Helw, Amr;Afifi, Mohamed Hossam
    • Journal of Communications and Networks
    • /
    • v.17 no.6
    • /
    • pp.622-633
    • /
    • 2015
  • The coexistence among different systems is a major problem in communications. Mutual interference between different systems should be analyzed and mitigated before their deployment. The paper focuses on two aspects that have an impact on the system performance. First, the coexistence analysis, i.e. evaluating the mutual interference. Second aspect is the coexistence techniques, i.e. appropriate system modifications that guarantee the simultaneous use of the spectrum by different technologies. In particular, the coexistence problem is analyzed between ultra-wide bandwidth (UWB) and narrow bandwidth (NB) systems emphasizing the role of spectrum sensing to identify and classify the NB interferers that mostly affect the performance of UWB system. A direct sequence (DS)-time hopping (TH) code design technique is used to mitigate the identified NB interference. Due to the severe effect of Narrowband Interference on UWB communications, we propose an UWB transceiver that utilizes spectrum-sensing techniques together with mitigation techniques. The proposed transceiver improves both the UWB and NB systems performance by adaptively reducing the mutual interference. Detection and avoidance method is used where spectrum is sensed every time duration to detect the NB interferer's frequency location and power avoiding it's effect by using the appropriate mitigation technique. Two scenarios are presented to identify, classify, and mitigate NB interferers.