ABSTRACT DRINKING WATER QUALITY IN ANKARA: A MONITORING STUDY Tezce, G&ouml / zde MS, Department of Environmental Engineering Supervisor: Prof. Dr. &Uuml / lk&uuml / Yetis Co-Supervisor: Prof. Dr. Filiz B. Dilek December 2010, 124 pages Following the event of severe drought experienced in 2007, it was decided to use Kesikk&ouml / pr&uuml / Reservoir as an additional source of water supply for the city of Ankara. Thereupon, there have been debates on the quality of Kesikk&ouml / pr&uuml / Reservoir water with the claims that some parameters, primarily sulfate and arsenic, were not complying with the quality standards and therefore there was a threat to public health. This study aims to determine whether the water quality in the distribution network in Ankara exceeds water quality standards, and to assess the status of water quality of Ankara. To this end, monthly samples were collected from 24 districts as distribution network water and also from the Kesikk&ouml / pr&uuml / Reservoir as source water, and were monitored in terms of certain water quality parameters during the period of July 2008 through June 2009. Sulfate concentration in Kesikk&ouml / pr&uuml / Reservoir water was measured as 300-500 mg/l and this high sulfate concentration in the source water led to high sulfate values in distribution system. On the other hand, the arsenic concentration in Kesikk&ouml / pr&uuml / water was analyzed between 9-11 &micro / g/l which is lower than the expected high arsenic concentration in Kizilirmak water. Moreover, monitoring of THM and HAA in distribution network was carried out to follow DBPs formation. The highest THM concentration was observed as 109 &micro / g/l for Bilkent in July 2008. Although for some districts and some months throughout the year THM concentration was higher than the EPA Stage-I (80 &micro / g/l) and Stage-II (40 &micro / g/l) limits, mean annual THM concentrations for districts in distribution system satisfies the standards. Furthermore, the highest HAA5 concentrations were determined as 75 &micro / g/l for Dikmen in February 2009. However, annual average HAA5 in any of the districts did not exceed USEPA limit of 60 &micro / g/l. Nonetheless, total/fecal coliform bacteria, which are the indicators of microbiological contamination, were detected in distribution system between the months of July 2008 and January 2009. However, the coliform bacteria did not appear with the increasing residual chlorine in the distribution system since January 2009. Results from this study demonstrate a temporal variability in water quality / indicating water quality deterioration in the distribution system during some months, while almost full compliance with the water quality standards during other months. Overall / due to Kesikk&ouml / pr&uuml / raw water, sulfate content appears to be the major concern in the water quality when considered the one-year monitoring period.

The North Anatolian Fault System is one of the most important active strike-slip fault systems in the world. The August 17, 1999 and November 12, 1999 earthquakes at Kocaeli and D&uuml / zce are the most recent devastating earthquakes. The study area lies in the Eastern Marmara Region and is bounded by the 28.55-33.75 E and 40.00-41.20 N, latitude and longitude coordinates, respectively. There are numerous studies conducted in the study area in terms of active tectonics and seismicity, however studies are scale dependent. Therefore, a comprehensive literature survey regarding active tectonics of the region was conducted and these previous studies were combined with the lineaments extracted from 10 ASTER images via principle component analysis manual extraction method. Therefore, a line seismic source model for the Eastern Marmara region was compiled mainly based on major seismic events of instrumental period. The seismicity of these line segments were compared with the instrumental period earthquake catalogue compiled by Kandilli Observatory and Earthquake Research Institute with a homogeneous magnitude scale between 1900 and 2005. Secondary event and completeness of this catalogue was checked. The final catalogue was matched with the compiled seismic source for historical seismicity and source-scenario-segment-weight relationships were developed. This developed seismic source model was tested by a probabilistic seismic hazard assessment for D&uuml / zce city center by utilizing four different ground motion prediction equations. It was observed that Gutenberg-Richter seismicity parameter &lsquo / b&rsquo / does not have significant effect over the model, however change in the segmentation model have a low but certain influence.

In this thesis, the loss of land totality and loss of sight of establishment purposes of a unique application AO&Ccedil / which is a very vital open green area for Ankara is discussed since it was established. The importance of AO&Ccedil / for the city of Ankara, loosing its land totality and diverging from its establishment purposes was of interest to public opinion for long years. This study aims to analyze the location of AO&Ccedil / in the city, the role of AO&Ccedil / within Ankara Metropolitan area, its qualities and the future objectives of the State Farm which were deviated from its establishment purposes by means of inefficient planning regulations. It is obvious that as a public property, the establishment purposes and the ideology behind AO&Ccedil / must be reevaluated considering the opportunities of the State Farm as a huge open green area for the city. Moreover, some future principles for the fragmented farmlands must be determined according to the development area of the city. v With this aim, the location of AO&Ccedil / in the city and the roles given to AO&Ccedil / by the Ankara city plans is analyzed since its establishment and the reevaluation of establishment purposes and the basic objectives necessary for the future development of AO&Ccedil / and design principles necessary to preserve the totality of AO&Ccedil / and open farmlands back to public use is argued in this thesis.

ABSTRACT CONSERVED CHARGES IN ASYMPTOTICALLY (ANTI)-DE SITTER SPACETIME G&Uuml / LL&Uuml / , iBRAHiM M.S., Department of Physics Supervisor: Assoc. Prof. Dr. Bayram Tekin August 2005, 77 pages. In this master&rsquo / s thesis, the Killing vectors are introduced and the Killing equation is derived. Also, some information is given about the cosmological constant. Then, the Abbott-Deser (AD) energy is reformulated by linearizing the Einstein equation with cosmological constant. From the linearized Einstein equation, Killing charges are derived by using the properties of Killing vectors. Using this formulation, energy is calculated for some specific cases by using the Schwarzschild-de Sitter metric. Last, the Einstein-Gauss-Bonnet model is studied. The equations of motion are calculated by solving the generic action at quadratic order. Following this, all energy calculations are renewed for this model. Some useful relations and calculations are shown in Appendix (A-B) parts. &Ouml / Z ASiMPTOTiK (ANTi)-DE SITTER UZAYZAMANINDA KORUNAN Y&Uuml / KLER G&Uuml / LL&Uuml / , iBRAHiM Y&uuml / ksek Lisans, Fizik B&ouml / l&uuml / m&uuml / Tez Y&ouml / neticisi: Assoc. Prof. Dr. Bayram Tekin Agustos 2005, 77 sayfa. Bu master &ccedil / aliSmasinda, Killing vekt&ouml / rler tanimlandi ve Killing denklemi &ccedil / ikarildi. Ayrica evrenbilimsel sabit, de-Sitter ve Anti-de Sitter uzaylari hakkinda bilgi verildi. Sonra, Abbott-Deser (AD) enerjisi, evrenbilimsel sabitli Einstein denklemi dogrusallaStirilarak yeniden form&uuml / le edildi. DogrusallaStirilmiS Einstein denkleminden, Killing vekt&ouml / rlerin &ouml / zellikleri kullanilarak Killing y&uuml / kleri (Deser-Tekin denklemi) &ccedil / ikarildi. Schwarzschild-de Sitter metrigi kullanilarak &ouml / zel durumlar i&ccedil / in enerji hesaplandi. Son olarak Einstein-Gauss-Bonnet (GB) modeli &ccedil / aliSildi. ikinci dereceden genel eylem &ccedil / &ouml / z&uuml / lerek hareket denklemleri hesaplandi. Bundan sonra, t&uuml / m enerji hesaplamalari bu model i&ccedil / in tekrarlandi. Bazi faydali hesaplamalar ek (A-B) kisimlarinda g&ouml / sterilmiStir.

In this thesis the impact of the Atat&uuml / rk Dam on social and environmental aspects of the Southeastern Anatolia Project has been discussed in terms of planning and policy making, institutional arrangements, infrastuctural development and human resources development. In order to analyse the impacts of Atat&uuml / rk Dam data related to several components are collected. These components can be listed as resettlement, land acquisition and land consolidation, education, health, gender issues. The results show that the Atat&uuml / rk Resettlement has been done involuntarily. The people mostly have their compensation. However the management abilities of the resettlers for the compensations were poor. Generally the Southeastern Anatolia Project as a large scale multi sectoral projects have positive impacts on the literacy ratio and health standards. Actually the social and environmental aspects of this kind of large scale projects are difficult to predict and measure. Therefore reasonable studies on prediciting the problems related to the environemental and social issues and producing sufficient solutions become more and more important day by day. The Southeastern Anatolia Project becomes an important example for similar projects by considering its both positive and negative impacts

Urban public spaces have always been subjected to physical, economical,social, political and cultural transformations of the city. These changing dynamics could cause decay in the spatial qualities and could also lead to a loss of values and identities of urban spaces, especially in public spaces. This thesis explores the qualities of a particular urban space in Istanbul: the Emin&ouml / n&uuml / Square. Providing a guideline for the future urban design projects,the structure and the identity of the historical public space is aimed in this thesis. Firstly, in order to evaluate the qualities of urban public space a method of analysis has been developed in the study. For this purpose, the urban design theories and their methodologies of analysis have been discussed with respect to three main headings: urban form, urban activity and urban image. Furthermore, as parallel to this purpose, the criteria of the quality of urban space are developed by the help of the morphological, visual and perceptual analyses. In the second stage, the formation-transformation processes of the Emin&ouml / n&uuml / Square, spatial dynamics and urban operations have been discussed within the framework of the method of analysis in a historical aspect. The results of the analyses show that the spatial dynamics and the urban operations affected the quality of the Square negatively in all formal, visual,social and perceptual aspects. In other words, the Emin&ouml / n&uuml / Square lost its well-defined formal structure and transformed to a space which is deprived of activity structure and legible identity.

POTENTIAL FOR POPULAR DISSEMINATION: AN ANALYSIS OF THE &amp / #8216 / IDEAL HOME&amp / #8217 / DISCOURSE IN THE WEEKLY YEDiG&Uuml / N MAGAZINE TUNCER, Melike Usalp M.Arch. in Architecture, Department of Architecture Supervisor: Assoc. Prof. Dr. Ali Cengizkan April 2006, 179 pages The social transformations beginning by the end of the nineteenth century and the political and economic changes of the Early Republican Era (1923-1938) and the Transition Era (1938-1950) had important effects on Turkish architecture. The effects of the &amp / #8216 / new&amp / #8217 / and &amp / #8216 / ideal&amp / #8217 / life accelerated by the establishment of the new democratic nation state brought rapid changes and transformations to all aspects of life including housing. This study deals with the housing discourse in Yedig&uuml / n magazine which was published weekly during the single party era of the Republic. It was published weekly from 1933 to 1950 and was followed by a wide portion of the society, as an important popular magazine of the era. Its effort to present articles, pictures and news on housing and decoration for 17 years, with only short interruptions, makes it necessary to investigate these popular architectural products. In this study, it is claimed that the visual and the written material of Yedig&uuml / n magazine, related to house, is part of the theme of what is called &amp / #8216 / ideal home&amp / #8217 / . The investigation and analysis of the &amp / #8216 / ideal home&amp / #8217 / 2 discourse in Yedig&uuml / n magazine as a whole is useful in improving one&amp / #8217 / s understanding of the modernization practices of the newly established Republic of Turkey. Two methods are used in order to understand the visual and written materials in the magazine: the first one is the Visual Analysis Method described in the book &amp / #8216 / Reading Images: The Grammar of Visual Analysis&amp / #8217 / by Gunther Kress and Theo van Leuween. The aim by using this method is to decipher the relationship of the representative medium with the reader, treat the material as a whole. The second method is the analysis of the whole material in the context in relation with the architectural, political, social and economical events of the period, to investigate the construction processes of the discourse. Therefore, this study aims at understanding the action-reaction potential of the tools of the &amp / #8216 / ideal home&amp / #8217 / discourse of the Yedig&uuml / n magazine, by deciphering the visual and written material. Some results of the thesis show us that / both Arkitekt and Yedig&uuml / n magazines follow the agenda of the foreign publications in a similar way / the foundation for a sort of &amp / #8216 / collective union&amp / #8217 / namely &amp / #8216 / housing cooperatives&amp / #8217 / was set, by keeping individual home acquisition constantly on the agenda / problems of the new and modern life were tried to be addressed by Yedig&uuml / n as well as in the current architectural publications / these home presentations may be judged as &amp / #8216 / a catalogue of idealized ideas&amp / #8217 / or &amp / #8216 / two dimensional advice manual&amp / #8217 / , for early Republican Era home icons.

Early Warning Systems (EWSs) for banking sectors are used to measure occurrence risks of banking crises, generally observed with a rundown of bank deposits and widespread failures of financial institutions. In countries with a small number of banks, for example Turkey with 48 banks (BDDK, 2011), every bank may be considered to have a systematic importance since the failure of any individual bank may carry a potential threat to lead to a banking crisis. Taking into account this fact the present study focuses on EWSs in Turkey. Since there is no single correct EWS to apply to all cases, in this study, 300 models were constructed and tested to find models as accurate as possible by using a trial-and-error process and by searching optimal feature subset or classifier methods. Empirical results indicate that prediction accuracy did not increase significantly while we got closer to the actual occurrence of bankruptcy. An important finding of the study was that trends of financial ratios were very useful in the prediction of bank failures. Instead of failures as a result of instant shocks, the banks&#039 / failures followed through a path: first a downward movement affected the efficiency of the banks&#039 / officers and the quality of management structure measured with &quot / Activity Ratios&quot / , then the profitability of the banks measured with &quot / Profit Ratios&quot / declined. At last, the performance and the stability of banks&#039 / earnings stream measured with &quot / Income-Expenditure Structure Ratios&quot / and the level and quality of the banks&#039 / capital base, the end line of defense, measured with &quot / Capital Ratios&quot / . At the end of study, we proposed an ensemble model which produced probability ratios for the success rates of the banks. The proposed model achieved a very high success rate for the banks we considered.

In recent years nickel is mostly produced from lateritic ore deposits such as nontronite, limonite, etc. Resource estimation is difficult for laterite deposits as they have a weak and heterogeneous form. 3D modeling software are rather suitable for deposits having tabular or vein type ores. In this study the most appropriate estimation technique for resource estimation of nickel laterite deposits was investigated. One of the known nickel laterite deposits in Turkey is located at T&uuml / rkmen&ccedil / ardagi - G&ouml / rdes region. Since the nickel (Ni) grade recovered from drilling studies seem to be very low, a reconciliation pit having dimensions of 40 m x 40 m x 15 m in x-y-z directions was planned by Meta Nikel Kobalt Mining Company (META), the license owner of the mine, to produce nickel ore. 13 core drilling and 13 reverse circulation drilling (RC) and 26 column samplings adjacent to each drillholes were located in this area. Those three sampling results were compared to each other and as well as the actual production values obtained from reconciliation pit. On the other side 3D computer modeling was also used to model the nickel resource in T&uuml / rkmen&ccedil / ardagi - G&ouml / rdes laterites. The results obtained from both inverse distance weighting and kriging methods were compared to the results of actual production to find out the applicability of 3D modeling to laterite deposits. Modeling results showed that Ni grade of the reconciliation pit in T&uuml / rkmen&ccedil / ardagi - G&ouml / rdes, considering 0.5% Ni cut-off value, by using drillholes data, inverse distance weighting method estimates 622 tonnes with 0.553% Ni and kriging method estimates 749 tonnes with 0.527% Ni. The actual production pit results provided 4,882 tonnes of nickel ore with 0.649% Ni grade. These results show that grade values seem to be acceptable but in terms of tonnage, there are significant differences between theoretical estimated values and production values.

The analysis of METU-Technopolis buildings and their space organizations indicates that there are two kinds of designing and planning tendencies in METU-Tech. One of them is Northern European and other one is North American Type of office which are also known as two important office designing approaches in the world. Northern European and North American Type of office organizations have different approaches in shaping office space. While Northern European type places far more emphasis on using office space to support staff morale and thus to add value to organizational performance, North American type tends to overestimate cost minimizations. These two types of designing tendencies in the world have had enormous effects on METU-Tech building design. While some buildings like Silicon Block and Silver block give importance to functions in space, and cost minimizations, others like Twin Building gives more importance to space quality and occupancy needs. The aim of this study is to introduce these two different kinds of office design approaches in METU-Technopolis by examining Silicon Block, Silver Block and Twin buildings. These buildings have been examined in three main scales which begin with urban design scale, Macro-Scale development, then Middle-Scale development and finally Micro-Scale development and buildings activities in architectural scale. In macro scale, Urban Design Studio&rsquo / s METU-Tech workings, and in middle- micro scale, advantages and disadvantages of these two space organizations manner have been introduced in detail on Silicon Block, Silver Block and Twin Building. Furthermore, all these three building&rsquo / s statistical information, capacities, and design specifications have been presented in drawings, graphics, and photos.