Yunus Eren - Academia.edu (original) (raw)
Papers by Yunus Eren
![Research paper thumbnail of 34 numaralı ve H.986/ 1578 tarihli mühimme defteri [s. 1-164] ‘’inceleme - metin’’](https://attachments.academia-assets.com/87825457/thumbnails/1.jpg)
](ÖZET Osmanlı Devleti’nde devlet işlerinin görüşüldüğü yer olan Divân-ı Hümâyun’da alınan kararlar... more ÖZET Osmanlı Devleti’nde devlet işlerinin görüşüldüğü yer olan Divân-ı Hümâyun’da alınan kararlar mühimme defterlerine kaydedilirdi. Devletin merkez ve taşra teşkilâtı, bu kurumların yapısı ve işleyişi, ülkenin iktisadî durumu, siyasî, adlî ve sosyal konuları içeren mühimme defterleri, yazıldığı dönemin en önemli kaynaklarındandır. Üzerinde çalışma yapılan 34 Numaralı Mühimme Defteri, hicrî 7 Muharrem-28 Safer 986, milâdî 16 Mart-6 Mayıs 1578 tarihleri arasındaki hükümleri içermektedir. Bu dönemde Osmanlı Devleti’nin başında III. Murad, sadrazamlık makamında ise Sokullu Mehmed Paşa bulunmaktadır.34 Numaralı Mühimme Defteri’nde İran Seferi’ne hazırlık ve seferin başlangıcında meydana gelen bazı gelişmeler ile buna bağlı olarak diplomatik faaliyetler önemli yer tutmaktadır. XVI. yüzyılın ikinci yarısından itibaren başlayıp, çalışmasını yaptığımız 1578 yılında devletin uğraştığı en önemli sorunlardan olan Celâli ve suhte isyanları, asâyişin temini başlığı altında ele alınmıştır. Bunlar...
Disability & Society, 2016
i REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704–0188 Public reporting burden for this coll... more i REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704–0188 Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instruction, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to
: Terrorism has become the one of the major threats facing many states. Understanding the potenti... more : Terrorism has become the one of the major threats facing many states. Understanding the potential sources of and preventing the financial support of terrorist organizations takes an important place in countering terrorism. This thesis focuses on the Kurdistan Workers Party (PKK) financing activities through the land border of Turkey. In doing so, this study mainly examines how the Turkish border security system can stop the trans-border financial activities of PKK along its land borders with Iran, Iraq and Syria. This thesis also takes the U.S. as a case study in terms of border security measures, and within that framework, makes recommendations for safeguarding Turkey s land borders to prevent financial activities of the PKK terrorist organization without affecting free trade and the economic flow of services. Presently, the Turkish border security system is fragmented and poorly coordinated. Border management is currently split between the army, gendarmerie, police and coast gua...
Remarkable advances have been made since rapid solidification was first introduced to the field o... more Remarkable advances have been made since rapid solidification was first introduced to the field of materials science and technology. New types of materials such as amorphous alloys and nanostructure materials have been developed as a result of rapid solidification techniques. While these advances are, in many respects, ground breaking, much remains to be discerned concerning the fundamental relationships that exist between a liquid and a rapidly solidified solid. The scope of the current dissertation involves an extensive set of experimental, analytical, and computational studies designed to increase the overall understanding of morphological selection, phase competition, and structural hierarchy that occurs under farfrom equilibrium conditions. High pressure gas atomization and Cu-block melt-spinning are the two different rapid solidification techniques applied in this study. The research is mainly focused on Al-Si and Al-Sm alloy systems. Silicon and samarium produce different, yet favorable, systems for exploration when alloyed with aluminum under far-from equilibrium conditions. One of the main differences comes from the positions of their respective T 0 curves, which makes Al-Si a good candidate for solubility extension while the plunging T 0 line in Al-Sm promotes glass formation. The rapidly solidified gas-atomized Al-Si powders within a composition range of 15 to 50 wt% Si are examined using scanning and transmission electron microscopy. The nonequilibrium partitioning and morphological selection observed by examining powders at different size classes are described via a microstructure map. The interface velocities and the amount of undercooling present in the powders are estimated from measured eutectic spacings based on Jackson-Hunt (JH) and Trivedi-Magnin-Kurz (TMK) models, which permit a direct comparison of theoretical predictions. For an average particle size of 10 µm with a Péclet number of ~0.2, JH and TMK deviate from each other. This deviation indicates v an adiabatic type solidification path where heat of fusion is reabsorbed. It is interesting that this particle size range is also consistent with the appearance of a microcellular growth. While no glass formation is observed within this system, the smallest size powders appear to consist of a mixture of nanocrystalline Si and Al. Al-Sm alloys have been investigated within a composition range of 34 to 42 wt% Sm. Gas atomized powders of Al-Sm are investigated to explore the morphological and structural hierarchy that correlates with different degrees of departure from full equilibrium conditions. The resultant powders show a variety of structural selection with respect to amount of undercooling, with an amorphous structure appearing at the highest cooling rates. Because of the chaotic nature of gas atomization, Cu-block melt-spinning is used to produce a homogeneous amorphous structure. The as-quenched structure within Al-34 to 42 wt% Sm consists of nanocrystalline fcc-Al (on the order of 5 nm) embedded in an amorphous matrix. The nucleation density of fcc-Al after initial crystallization is on the order of 10 22-10 23 m-3 , which is 10 5-10 6 orders of magnitude higher than what classical nucleation theory predicts. Detailed analysis of liquid and as-quenched structures using high energy synchrotron X-ray diffraction, high energy transmission electron microscopy, and atom probe tomography techniques revealed an Al-Sm network similar in appearance to a medium range order (MRO) structure. A model whereby these MRO clusters promote the observed high nucleation density of fcc-Al nanocrystals is proposed. The devitrification path was identified using high temperature, in-situ, high energy synchrotron X-ray diffraction techniques and the crystallization kinetics were described using an analytical Johnson-Mehl-Avrami (JMA) approach.
ÖZET Osmanlı Devleti’nde devlet işlerinin görüşüldüğü yer olan Divân-ı Hümâyun’da alınan kararlar... more ÖZET Osmanlı Devleti’nde devlet işlerinin görüşüldüğü yer olan Divân-ı Hümâyun’da alınan kararlar mühimme defterlerine kaydedilirdi. Devletin merkez ve taşra teşkilâtı, bu kurumların yapısı ve işleyişi, ülkenin iktisadî durumu, siyasî, adlî ve sosyal konuları içeren mühimme defterleri, yazıldığı dönemin en önemli kaynaklarındandır. Üzerinde çalışma yapılan 34 Numaralı Mühimme Defteri, hicrî 7 Muharrem-28 Safer 986, milâdî 16 Mart-6 Mayıs 1578 tarihleri arasındaki hükümleri içermektedir. Bu dönemde Osmanlı Devleti’nin başında III. Murad, sadrazamlık makamında ise Sokullu Mehmed Paşa bulunmaktadır.34 Numaralı Mühimme Defteri’nde İran Seferi’ne hazırlık ve seferin başlangıcında meydana gelen bazı gelişmeler ile buna bağlı olarak diplomatik faaliyetler önemli yer tutmaktadır. XVI. yüzyılın ikinci yarısından itibaren başlayıp, çalışmasını yaptığımız 1578 yılında devletin uğraştığı en önemli sorunlardan olan Celâli ve suhte isyanları, asâyişin temini başlığı altında ele alınmıştır. Bunlar...
Disability & Society, 2016
i REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704–0188 Public reporting burden for this coll... more i REPORT DOCUMENTATION PAGE Form Approved OMB No. 0704–0188 Public reporting burden for this collection of information is estimated to average 1 hour per response, including the time for reviewing instruction, searching existing data sources, gathering and maintaining the data needed, and completing and reviewing the collection of information. Send comments regarding this burden estimate or any other aspect of this collection of information, including suggestions for reducing this burden, to
: Terrorism has become the one of the major threats facing many states. Understanding the potenti... more : Terrorism has become the one of the major threats facing many states. Understanding the potential sources of and preventing the financial support of terrorist organizations takes an important place in countering terrorism. This thesis focuses on the Kurdistan Workers Party (PKK) financing activities through the land border of Turkey. In doing so, this study mainly examines how the Turkish border security system can stop the trans-border financial activities of PKK along its land borders with Iran, Iraq and Syria. This thesis also takes the U.S. as a case study in terms of border security measures, and within that framework, makes recommendations for safeguarding Turkey s land borders to prevent financial activities of the PKK terrorist organization without affecting free trade and the economic flow of services. Presently, the Turkish border security system is fragmented and poorly coordinated. Border management is currently split between the army, gendarmerie, police and coast gua...
Remarkable advances have been made since rapid solidification was first introduced to the field o... more Remarkable advances have been made since rapid solidification was first introduced to the field of materials science and technology. New types of materials such as amorphous alloys and nanostructure materials have been developed as a result of rapid solidification techniques. While these advances are, in many respects, ground breaking, much remains to be discerned concerning the fundamental relationships that exist between a liquid and a rapidly solidified solid. The scope of the current dissertation involves an extensive set of experimental, analytical, and computational studies designed to increase the overall understanding of morphological selection, phase competition, and structural hierarchy that occurs under farfrom equilibrium conditions. High pressure gas atomization and Cu-block melt-spinning are the two different rapid solidification techniques applied in this study. The research is mainly focused on Al-Si and Al-Sm alloy systems. Silicon and samarium produce different, yet favorable, systems for exploration when alloyed with aluminum under far-from equilibrium conditions. One of the main differences comes from the positions of their respective T 0 curves, which makes Al-Si a good candidate for solubility extension while the plunging T 0 line in Al-Sm promotes glass formation. The rapidly solidified gas-atomized Al-Si powders within a composition range of 15 to 50 wt% Si are examined using scanning and transmission electron microscopy. The nonequilibrium partitioning and morphological selection observed by examining powders at different size classes are described via a microstructure map. The interface velocities and the amount of undercooling present in the powders are estimated from measured eutectic spacings based on Jackson-Hunt (JH) and Trivedi-Magnin-Kurz (TMK) models, which permit a direct comparison of theoretical predictions. For an average particle size of 10 µm with a Péclet number of ~0.2, JH and TMK deviate from each other. This deviation indicates v an adiabatic type solidification path where heat of fusion is reabsorbed. It is interesting that this particle size range is also consistent with the appearance of a microcellular growth. While no glass formation is observed within this system, the smallest size powders appear to consist of a mixture of nanocrystalline Si and Al. Al-Sm alloys have been investigated within a composition range of 34 to 42 wt% Sm. Gas atomized powders of Al-Sm are investigated to explore the morphological and structural hierarchy that correlates with different degrees of departure from full equilibrium conditions. The resultant powders show a variety of structural selection with respect to amount of undercooling, with an amorphous structure appearing at the highest cooling rates. Because of the chaotic nature of gas atomization, Cu-block melt-spinning is used to produce a homogeneous amorphous structure. The as-quenched structure within Al-34 to 42 wt% Sm consists of nanocrystalline fcc-Al (on the order of 5 nm) embedded in an amorphous matrix. The nucleation density of fcc-Al after initial crystallization is on the order of 10 22-10 23 m-3 , which is 10 5-10 6 orders of magnitude higher than what classical nucleation theory predicts. Detailed analysis of liquid and as-quenched structures using high energy synchrotron X-ray diffraction, high energy transmission electron microscopy, and atom probe tomography techniques revealed an Al-Sm network similar in appearance to a medium range order (MRO) structure. A model whereby these MRO clusters promote the observed high nucleation density of fcc-Al nanocrystals is proposed. The devitrification path was identified using high temperature, in-situ, high energy synchrotron X-ray diffraction techniques and the crystallization kinetics were described using an analytical Johnson-Mehl-Avrami (JMA) approach.