Towards an Islamic Theology of Nonviolence: A Critical Appraisal of Maulana Wahiduddin Khan\u27s View of Jihad (Part II)

In the second and last part of his article (see September issue, 671·80) Dr Omar explains the true meaning of Jihad in the ancient Islamic sources, which does not stand for violent warfare but for the struggle that every Muslim , indeed every person, should go through to remain obedient to God\u27s Word and to fulfil the will of God on earth. With this we wish to commemorate the UNO declared day dedicated to non·violence, the day known in India as Gandhi Jayanti (Oct. 2)

System and component design and test of a 10 hp, 18,000 rpm AC dynamometer utilizing a high frequency AC voltage link, part 1

Hard and soft switching test results conducted with one of the samples of first generation MOS-controlled thyristor (MCTs) and similar test results with several different samples of second generation MCT's are reported. A simple chopper circuit is used to investigate the basic switching characteristics of MCT under hard switching and various types of resonant circuits are used to determine soft switching characteristics of MCT under both zero voltage and zero current switching. Next, operation principles of a pulse density modulated converter (PDMC) for three phase (3F) to 3F two-step power conversion via parallel resonant high frequency (HF) AC link are reviewed. The details for the selection of power switches and other power components required for the construction of the power circuit for the second generation 3F to 3F converter system are discussed. The problems encountered in the first generation system are considered. Design and performance of the first generation 3F to 3F power converter system and field oriented induction moter drive based upon a 3 kVA, 20 kHz parallel resonant HF AC link are described. Low harmonic current at the input and output, unity power factor operation of input, and bidirectional flow capability of the system are shown via both computer and experimental results. The work completed on the construction and testing of the second generation converter and field oriented induction motor drive based upon specifications for a 10 hp squirrel cage dynamometer and a 20 kHz parallel resonant HF AC link is discussed. The induction machine is designed to deliver 10 hp or 7.46 kW when operated as an AC-dynamo with power fed back to the source through the converter. Results presented reveal that the proposed power level requires additional energy storage elements to overcome difficulties with a peak link voltage variation problem that limits reaching to the desired power level. The power level test of the second generation converter after the addition of extra energy storage elements to the HF link are described. The importance of the source voltage level to achieve a better current regulation for the source side PDMC is also briefly discussed. The power levels achieved in the motoring mode of operation show that the proposed power levels achieved in the generating mode of operation can also be easily achieved provided that no mechanical speed limitation were present to drive the induction machine at the proposed power level

SINONASAL VERRUCOUS CARCINOMA Case series and review of literature

Verrucous carcinoma is a low grade malignancy and is a variant of squamous cell carcinoma. It is a rare tumour of the Sino nasal tract. The neoplasm occurs in older people usually in the seventh or eighth decade of life. Our cases were sinonasal in origin and patients affected were young.

Palestine at the UN: The PLO and UNRWA in the 1970s

This article examines the relationship of the Palestine Liberation Organization (PLO) to the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) during the 1970s, the period when the PLO reached the zenith of its power in Palestinian refugee camps throughout the Levant. Based on archival United Nations (UN) and UNRWA documents, as well as the PLO's own communications and publications, the article argues that the organization approached its relationship with UNRWA as part of a broader strategy to gain international legitimacy at the UN. That approach resulted in a complex set of tensions, specifically over which of the two institutions truly served and represented Palestinian refugees. In exploring these tensions, this article also demonstrates how the “question of Palestine” was in many ways an international issue

Prototipe Teknik Penyisipan Dokumen Citra Digital Menggunakan Watermarking Dengan Metode DCT (Discrete Cosine Transform)

— Watermarking is present as an alternative to protecting digital data from people who are not responsible. This research aims to build an algorithms technique hides the information into digital documents and to extract with Watermarking method using DCT (Discrete cosine transform), This research is also expected to built a watermark technique that can add a watermark into digital documents with good image quality without reducing significantly or decreased quality of the image is still within a reasonable tolerance value. Viewed from change capacity, the format tif very good image because Watermarking process, having performed citra terwatermark (tif ) suffered substraction, while review of reckoning quality mse psnr, and using images citra bmp very good since the value of MSE on bmp image is the smallest and PSNR value is large. Keywords—Digital document, DCT, Watermarking , Algorithm, robus

Scattering into one-dimensional waveguides from a coherently-driven quantum-optical system

We develop a new computational tool and framework for characterizing the scattering of photons by energy-nonconserving Hamiltonians into unidirectional (chiral) waveguides, for example, with coherent pulsed excitation. The temporal waveguide modes are a natural basis for characterizing scattering in quantum optics, and afford a powerful technique based on a coarse discretization of time. This overcomes limitations imposed by singularities in the waveguide-system coupling. Moreover, the integrated discretized equations can be faithfully converted to a continuous-time result by taking the appropriate limit. This approach provides a complete solution to the scattered photon field in the waveguide, and can also be used to track system-waveguide entanglement during evolution. We further develop a direct connection between quantum measurement theory and evolution of the scattered field, demonstrating the correspondence between quantum trajectories and the scattered photon state. Our method is most applicable when the number of photons scattered is known to be small, i.e. for a single-photon or photon-pair source. We illustrate two examples: analytical solutions for short laser pulses scattering off a two-level system and numerically exact solutions for short laser pulses scattering off a spontaneous parametric downconversion (SPDC) or spontaneous four-wave mixing (SFWM) source. Finally, we note that our technique can easily be extended to systems with multiple ground states and generalized scattering problems with both finite photon number input and coherent state drive, potentially enhancing the understanding of, e.g., light-matter entanglement and photon phase gates.Comment: Numerical package in collaboration with Ben Bartlett (Stanford University), implemented in QuTiP: The Quantum Toolbox in Python, Quantum 201