Ulucak Höyük: Pojav lončenine v zahodni Anatoliji

It has been increasingly clear that pottery was adopted as a continuous technology during the first quarter of the 7th millennium BC in a wide region, from Upper Mesopotamia through Central Anatolia and the Lakes District region. However, the absence of pottery in the basal level at Ulucak Höyük shows the presence of a pre-ceramic sequence in western Anatolia, before c. 6600/6500 cal BC. This article discusses the earliest pottery assemblage from Ulucak (6600/6500–6200 cal BC) and compares it with the later ceramic sequences at the site. Ultimately, the functional and typological developmental sequence of Neolithic pottery at Ulucak Höyük and its temporo-spatial relations with other Neolithic sites in Anatolia will be assessed.Vse bolj je jasno, da je bilo lončarstvo kot tehnologija sprejeto neprekinjeno v prvi četrtini 7. tisočletja pr. n. št. na širokem območju od zgornje Mezopotamije do osrednje Anatolije in območja jezer. Kljub temu odsotnost lončenine v najglobljih plasteh na najdišču Ulucak Höyük kaže na obstoj predkeramične sekvence v zahodni Anatoliji, in sicer pred ok. 6600/6500 pr. n. št. V članku razpravljamo o najzgodnejšem zbiru lončenine iz Ulucaka (6600/6500–6200 pr. n. št.) in ga primerjamo s kasnejšimi sekvencami keramike na tem najdišču. Na koncu ocenjujemo funkcionalno in tipološko razvojno sekvenco neolitske lončenine na najdišču Ulucak Höyük in njeno časovno in prostorsko povezavo z drugimi neolitskimi najdišči v Anatoliji

ASELSAN'IN BÜYÜME VE KARLILIĞINA İLİŞKİN BOX-JENKİNS YÖNTEMİ İLE BİR ÖNGÖRÜ ÇALIŞMASI

Yapılan bu çalışmada, savunma sanayi sektörünün en başarılı firmalarından biri olan ASELSAN’nın bazı ekonomik verilerini (özsermaye kârlılığı- aktif kârlılık- özsermaye büyüme ve aktif büyüme) kullanarak uygun modeller kurmak, kurulan bu modellerle de gelecek dönemler için öngörülerde bulunmak amaçlanmıştır. Adı geçen firmadan elde edilen veriler, Box-Jenkins yöntemi yardımı ile analiz edilmiş ve öngörüler yapılmıştır. İlgili firmanın 1996-2018 yıllarını kapsayan 3’er aylık ekonomik verileri kullanılarak gerekli analizler yapılmış, uygun Box-Jenkins modelleri elde edilmiş ve bu modeller yardımıyla da 2019-2020 yıllarına ait 3’er aylık 8 dönem için öngörüler yapılmıştır. Yapılan öngörülere göre, gelecek dönemlerde ASELSAN’ın özsermaye karlılığı değerlerinin önce azalma, daha sonra çok hafif yükselme eğilimi göstereceği, aktif karlılık değerlerinin ise azalma eğilimi içerisinde olacağı anlaşılmaktadır. Yine özsermaye büyüme değerlerinin önce hafif bir dalgalanma gösterip daha sonra azalma eğiliminde olacağı, aktif büyüme değerlerinin ise önce hafif bir yükselme gösterip daha sonra azalarak ortalama civarında seyretme eğiliminde olacağı tespit edilmiştir

An assessment of metal pollution in surface sediments of Seyhan dam by using enrichment factor, geoaccumulation index and statistical analyses

The aim of this study was to determine if high concentrations of any heavy metals exist in the sediment of Seyhan Dam reservoir to be considered toxic to the aquatic environment. Surface sediment samples from five stations in the Seyhan dam were collected quarterly from 2004 to 2005 and examined for metal content (Cr, Zn Cu, Mn, Cd, Fe, Ca, K, and Na), organic matter, and grain size. Correlation analyses showed that metal content of Seyhan dam sediment was affected by organic matter and grain size. The results have been compared with values given in the literature. The evaluation of the metal pollution status of the dam was carried out by using the enrichment factor and the geoaccumulation index. A comparison with sediment quality guideline values has also been made. Based on the enrichment factor, dam sediments were treated as a moderately severe enrichment with Cd and minor enrichment with Cr and Mn. The results of geoaccumulation index reveal that sediments of Seyhan Dam were strongly polluted in stations 1, 2, 4, and 5, and were moderately polluted in station 3 with Cd. Moreover, Cd and Cr concentrations in the sediments were above TECs except ERL for Cd.This work was supported (SÜF 2004 BAP 4) by the research fund of Çukurova University, Turke

Association of trans-myocardial repolarisation parameters with size of the diffusion limitation area in acute ischaemic stroke

Objectives. This study aimed to evaluate the relationship between transmyocardial repolarisation parameters and the size of the diffusion limitation area measured using diffusion weighted magnetic resonance imaging (DWMRI) in patients diagnosed with ischaemic stroke without known cardiac diseases.Material and methods. The study was a prospective, observational clinical study. Patients without cardiac disease with acute ischaemic stroke were included in the study. Electrocardiography (ECG) was received from the patients. P, QT, QTc and Tp-e dispersions were calculated. All the patients had computerised brain tomography (CT) and then DWMRI carried out so as to calculate infarct areas.Results. Seventy ischaemic stroke patients and 30 control patients were included in the study. All parameters except for QTc dispersion (p = 0.88) were higher in the stroke group than in the control group (p < 0.05 for all values). The infarct area calculated with DWMRI was divided into four groups according to quartiles, and QT, QTc, P, and Tp-e dispersions of patients were evaluated. Patients were found to have a prolonged dispersion as the infarct area expanded, and this difference was statistically significant (p < 0.05 for all values).Conclusions. When we compared the patients with ischaemic stroke who had no known cardiac disease to those in the control group we found an increase in transmyocardial repolarisation parameters. As diffusion limitation areas grew larger, QT, QTc, P, and Tp-e dispersions increased. Physicians should be aware of dysrhythmias and sudden cardiac death in acute stroke and should observe these patients, especially those with larger stroke lesions

Spatial and temporal heterogeneity in human mobility patterns in Holocene Southwest Asia and the East Mediterranean

We present a spatiotemporal picture of human genetic diversity in Anatolia, Iran, Levant, South Caucasus, and the Aegean, a broad region that experienced the earliest Neolithic transition and the emergence of complex hierarchical societies. Combining 35 new ancient shotgun genomes with 382 ancient and 23 present-day published genomes, we found that genetic diversity within each region steadily increased through the Holocene. We further observed that the inferred sources of gene flow shifted in time. In the first half of the Holocene, Southwest Asian and the East Mediterranean populations homogenized among themselves. Starting with the Bronze Age, however, regional populations diverged from each other, most likely driven by gene flow from external sources, which we term “the expanding mobility model.” Interestingly, this increase in inter-regional divergence can be captured by outgroup-f$_3$-based genetic distances, but not by the commonly used F$_{ST}$ statistic, due to the sensitivity of F$_{ST}$, but not outgroup-f$_3$, to within-population diversity. Finally, we report a temporal trend of increasing male bias in admixture events through the Holocene

Total quality management and an application

YÖK Tez ID: 61141ÖZET Bu çalışmada kalite, kalite kontrol ve çağdaş bir yönetim anlayışı olan Toplam Kalite Yönetimi kavramları tanıtılmış ve Toplam Kalite Yönetiminin özellikleri ve temel öğeleri hakkında bilgi verilmiştir. Ayrıca kalite konusunda problemleri olan bir kumaş boyama fabrikasından alınan verilerle bir uygulama çalışması yapılmış ve bu çalışma sonucunda ilgili fabrikada, özellikle kumaşların renklerinin istenilen kalitede elde edilemediği ve boyama işleminin gerçekleştirildiği makineların bir takım sebeplerle boş bekledikleri tespit edilmiştir. Fabrikanın bu tür problemlerden kurtulması için üst yönetime, Toplam Kalite Yönetimi Sistemine geçmeleri tavsiye edilmiştir.ABSTRACT In this dissertation, quality, quality control and Total Quality Management which is a contemporary management issue was introduced, and the characteristics and the main elements of Total Quality Management was also considered. Furthermore, an application was made by using the data which were taken from the cloth dyeing plant which has some problems in quality. As a result, problems were detected: the quality of the cloths' colors are not as good as desired and the dyeing machines were idle because of some reasons. The Total Quality Management System was proposed to the top management in order to solve the foregoing problem. Il

Zaman Serileri Analizinde Box-Jenkıns Yöntemi Ve Turizm Verileri Üzerine Bir Uygulama

Tez (Doktora) -- Kırıkkale Üniversitesi47884

Tam Sayılı Doğrusal Programlama İle İşgücü Planlaması Ve Bir Uygulama

Bu çalışmada Tokat il merkezinde faaliyet gösteren bir işletmede Tam Sayılı Doğrusal Programlama yardımıyla işletmeye minimum maliyeti sağlayacak işgücü planlaması yapılmıştır. Veriler WINQSB 1.00 paket programı yardımıyla analiz edilmiştir. Analiz sonucunda hangi vardiyada hangi personelden kaç adet çalıştırılması gerektiği belirlenmiştir.This study was performed in a company operating in Tokat using integer Linear Programming. The aim of the study was to make manpower planning which would provide minimum cost the company. The data was analyzed by using WINQSB 1.00. The result of analysis helped to determine the number of employees to be worked for each rotation