149 research outputs found
Development of a compact hard X-ray split-and-delay line for studying ultrafast dynamics at free electron laser sources
No full textThe study of condensed matter dynamics on ultrafast timescales is one of the key topics in modern material science research. Hard X-ray free-electron laser sources with extreme peak brightness and ultra short pulses provide excellent conditions for studying ultrafast dynamics in the time domain by employing such techniques as X-ray pump-probe spectroscopy or X-ray photon correlation spectroscopy. However, the intrinsic time structure of FEL sources limits the investigated timescales to 0.2 microseconds or slower. One way of overcoming this limitation is split-and-delay technology. This work presents a new concept for a compact hard X-ray split-and-delay device, enabling such experiments at X-ray FEL sources. The device is designed to split a single X-ray pulse into two fractions introducing time delays from -5 to 815 ps. Accessing such timescales allows to push studies of ultrafast dynamics beyond the intrinsic temporal limit of the X-ray source. The split-and-delay unit is based on Bragg optics and modern technologies for mechanics. Having a compact portable design with dimensions of 60x60x30 cm and a weight of about 60 kg allows to install the device in basically any experimental hutch of a FEL source. The split-and-delay line utilizes a combination of various silicon Bragg optics, arranged in various configurations, enabling the operation in the energy range from 7 to 16 keV. The quality of the beam splitting optics is checked by X-ray topography measurements. A novel method for the split-and-delay line alignment and time delay calibration using a infrared laser setup is developed and successfully used. The infrared setup allows a temporal pre-alignment with a precision better than 22 ps without the need for X-rays. The performance of the split-and-delay setup is checked by measuring the throughput and the delay times with the use of Si(111), Si(220) and Si(422) optics at 7 keV and 9 keV photon energies. Delay times are measured, ranging from 130 ps to 716 ps. The average uncertainty of measured delay times is 16.2 ps. The results show, that ultrafast pump-probe or XPCS experiments can be carried out with the compact split-and-delay line
Application of Tawarruq munazzam in Malaysia / Ismail Rustam
No full textNowadays, the development of Islamic Financial Institutions has given positive impact towards Islamic bank industry. Many new contracts have been introduced as
an alternative to conventional bank products. Tawarruq munazzam or known as commodity murabahah is one of the contracts. In this study, the author has set several
objectives which are to explain the concept of tawarruq munazzam, discussing the fuqaha’s opinions on this contract and explain the modus operandi of tawarruq
munazzam implements in Malaysia. The study founds that tawarruq munazzam is a contract that practice by Islamic bank to provide financing towards customers. The
practice of this contract is contrary to the conventional bank’s financing products. This is because the features of both contracts are different. In fact, tawarruq munazzam is a contract based on the trading transaction, meanwhile, the financing product offered by conventional banks is based on loans which containing riba. Majority of contemporary fuqaha permit the practice of tawarruq munazzam based on their ijtihad to provide maslahah among the society. Meanwhile, there are also fuqaha who prohibited this practice because it seems like a hilah to permit riba. Lastly, an Every Islamic bank in Malaysia is using a platform such as as-Sidq, London Metal Exchange, and Bursa Suq al-Sila to trade the commodity while practicing tawarruq
munazzam
Foreigners in the Empire of Trebizond (the Case of Orientals and Italians)
No full textThis article provides a comparative analysis of the two largest groups of foreigners in the Empire of Trebizond : those from the East (primarily Turks), and Italians. In particular, it contains the etymology of seven Oriental names and prosopographic analysis of the holders that have not previously been discussed in the literature. The article poses the problem of the presence of naturalized Italians and their descendants in rural areas of the Empire of Trebizond. The author concludes that although the number of Italian migrants was considerably smaller than the number of newcomers from Muslim Asia, the Italians had a more prestigious status in the Trapezuntine society.Shukurov Rustam. Foreigners in the Empire of Trebizond (the Case of Orientals and Italians). In: At the Crossroads of Empires : 14th - 15th Century Eastern Anatolia. Proceedings of the International Symposium held in Istanbul, 4th - 6th May 2007. Istanbul : Institut Français d'Études Anatoliennes-Georges Dumézil, 2012. pp. 71-84. (Varia Anatolica, 25
Foreigners in the Empire of Trebizond (the Case of Orientals and Italians)
No full textThis article provides a comparative analysis of the two largest groups of foreigners in the Empire of Trebizond : those from the East (primarily Turks), and Italians. In particular, it contains the etymology of seven Oriental names and prosopographic analysis of the holders that have not previously been discussed in the literature. The article poses the problem of the presence of naturalized Italians and their descendants in rural areas of the Empire of Trebizond. The author concludes that although the number of Italian migrants was considerably smaller than the number of newcomers from Muslim Asia, the Italians had a more prestigious status in the Trapezuntine society.Shukurov Rustam. Foreigners in the Empire of Trebizond (the Case of Orientals and Italians). In: At the Crossroads of Empires : 14th - 15th Century Eastern Anatolia. Proceedings of the International Symposium held in Istanbul, 4th - 6th May 2007. Istanbul : Institut Français d'Études Anatoliennes-Georges Dumézil, 2012. pp. 71-84. (Varia Anatolica, 25
Melek Zade Ahi Rustam Dara's work named "Sahname-i Ahi"
No full textKonya Yusuf Ağa Kütüphanesindeki 10459 kayıt numaralı Şahnâme-i Ahî adlı eserin ortaya çıkarılarak günümüz Farsça yazım kurallarıyla elektronik ortama aktarılması amaçlanmıştır. Mesnevi tarzında yazılan bu eserle ilgili bilgiler verilmeye çalışılmış, ayrıca eserin müellifi ve müstensihi hakkında da bilgilere yer verilmiştir. Ahî Rustem Dârâ eserinde XV-XVI. yüzyılların Osmanlı İmparatorluğu döneminde, dönemin sultanlarından Sultan II. Mehmed ve Sultan II. Bayezid'in seferlerini ve fetihlerini şahname tarzında destansı bir dille anlatmış ve dönemin tarihi olaylarıyla ilgili bilgiler vermiştir. Eserin yazım tarihiyle ilgili kesin bir kayıt bulunmamasına rağmen zikredilen olaylar hangi dönemi kapsadığı ile ilgili bizlere ipucu vermiştir. Bu çalışmayla, bugüne kadar gün yüzüne çıkmamış olan bu eser hakkında okuyucunun bilgi sahibi olması istenmiştir.Shahname-i Ahi, numbered 10459 in the Konya Yusuf Aga Library, has been unearthed and transferred to the electronic medium with the current Persian spelling rules. Information about this work written in mesnevi style was tried to be given and short information about the author and the author of the work was also given. Ahi Rustam Dârâ in his work XV-XVI. century, during the Ottoman Empire, Sultan Mehmed II and Sultan Bayezid II and the conquests of the sultan in the style of epic narrative and gave information about the historical events of the period. Although there is no precise record of the writing date of the work, the mentioned events gave us a clue as to which period it covers. With this study, the reader has been asked to have information about this work which has not been revealed to date
Nou-Ayin e John Horace Ford; A Rare Qissa from the Eighteenth Century
No full textThis article presents the very first critical editing of the “Nou-Ayin e John Horace Ford” by Rustam Ali Bijnori. This ‘qissa’ was penned down in 1786 A.D for presenting to an East India Company’s army officer John Horace Ford. A manuscript of abovesaid qissa is kept in the Middle Eastern Manuscript section of Special Collections at the University of Melbourne, Australia. Alongwith critical editing, a brief biographical introduction of the author, linguistic and stylistic analysis of the text and a glossary are also included in this article. Keywords: Urdu prose, Nou-Ayin e John Horace Ford, Rustam Ali Bijnori, Critical Editing, Manuscripts</p
Penerapan Sistem Informasi Akuntansi : Studi Komparasi pada PT Pelabuhan Indonesia I (Persero) Medan, PT Perkebunan Nusantara III (Persero) Medan, PT Telekomunikasi Indonesia Tbk Medan
No full textThis study aims to determine how the application of the accounting
information system that is used on the PT. (Persero) Pelabuhan Indonesia I
Medan, PT.Perkebunan Nusantara III (Persero) Medan, and Telekomunikasi
Indonesia Tbk. Medan, whether it has been able to provide accurate information
to the management company?
Types of research by the author is a descriptive study. The type of data used
are primary data and secondary data. Collection techniques by the author are
interviews and observation and data analysis method is descriptive method, a
method in which the method of analysis of data collected, compiled, interpreted,
analyzed, thus providing complete information for solving the problems
encountered.
Based on the results of research conducted, the authors conclude that there is
no significant difference in the application of accounting information system of
the three companies. Accounting information system applied in PT.Pelabuhan
Indonesia I (Persero) Medan, PT.Perkebunan Nusantara III (Persero) Medan and
PT. Telekomunikasi Indonesia Tbk., Medan is quite good and adequate, adapted
to the needs of each company although there are still some obstacles in the
implementation of the system used.184 HalamanSkripsi Sarjan
Nou-Ayin e John Horace Ford; A Rare Qissa from the Eighteenth Century
No full textThis article presents the very first critical editing of the “Nou-Ayin e John Horace Ford” by Rustam Ali Bijnori. This ‘qissa’ was penned down in 1786 A.D for presenting to an East India Company’s army officer John Horace Ford. A manuscript of abovesaid qissa is kept in the Middle Eastern Manuscript section of Special Collections at the University of Melbourne, Australia. Alongwith critical editing, a brief biographical introduction of the author, linguistic and stylistic analysis of the text and a glossary are also included in this article. Keywords: Urdu prose, Nou-Ayin e John Horace Ford, Rustam Ali Bijnori, Critical Editing, Manuscript
Nou-Ayin e John Horace Ford; A Rare Qissa from the Eighteenth Century
No full textThis article presents the very first critical editing of the “Nou-Ayin e John Horace Ford” by Rustam Ali Bijnori. This ‘qissa’ was penned down in 1786 A.D for presenting to an East India Company’s army officer John Horace Ford. A manuscript of abovesaid qissa is kept in the Middle Eastern Manuscript section of Special Collections at the University of Melbourne, Australia. Alongwith critical editing, a brief biographical introduction of the author, linguistic and stylistic analysis of the text and a glossary are also included in this article. Keywords: Urdu prose, Nou-Ayin e John Horace Ford, Rustam Ali Bijnori, Critical Editing, Manuscripts</p
Compact hard X-ray split-and-delay line for studying ultrafast dynamics at free-electron laser sources
No full textA compact hard X-ray split-and-delay line for studying ultrafast dynamics at free-electron laser sources is presented. The device is capable of splitting a single X-ray pulse into two fractions to introduce time delays from −5 to 815 ps with femtosecond resolution. The split-and-delay line can operate in a wide and continuous energy range between 7 and 16 keV. Compact dimensions of 60 × 60 × 30 cm with a total weight of about 60 kg make it portable and suitable for direct installation in an experimental hutch. The concept of the device is based on crystal diffraction. The piezo-driven stages utilized in the device give nanometre positioning accuracy. On-line monitoring systems based on X-ray cameras and intensity monitors are implemented to provide active alignment feedback. Performance estimates of the system are also presented
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