Explicit formulas for exponential of 2×2 split-complex matrices

Split-complex (hyperbolic) numbers are ordered pairs of real numbers, written in the form x + jy with j(2) - 1, used to describe the geometry of the Lorentzian plane. Since a null split-complex number does not have an inverse, some methods to calculate the exponential of complex matrices are not valid for split-complex matrices. In this paper, we examined the exponential of a 2 Chi 2 split-complex matrix in three cases : i. triangle = 0, ii. triangle not equal 0 and triangle is not null split-complex number, iii. triangle (sic) 0 and triangle is a null split-complex number where triangle = (trA)(2) - 4 det A

INVESTIGATION OF STRUCTURAL, ELECTRONIC, ELASTIC AND OPTICAL PROPERTIES OF Cd1-x-yZnxHgyTe ALLOYS

Structural, optical and electronic properties and elastic constants of Cd1-x-yZnx HgyTe alloys have been studied by employing the commercial code Castep based on density functional theory. The generalized gradient approximation and local density approximation were utilized as exchange correlation. Using elastic constants for compounds, bulk modulus, band gap, Fermi energy and Kramers–Kronig relations, dielectric constants and the refractive index have been found through calculations. Apart from these, X-ray measurements revealed elastic constants and Vegard’s law. It is seen that results obtained from theory and experiments are all in agreement.Structural, optical and electronic properties and elastic constants of Cd1-x-yZnx HgyTe alloys have been studied by employing the commercial code Castep based on density functional theory. The generalized gradient approximation and local density approximation were utilized as exchange correlation. Using elastic constants for compounds, bulk modulus, band gap, Fermi energy and Kramers–Kronig relations, dielectric constants and the refractive index have been found through calculations. Apart from these, X-ray measurements revealed elastic constants and Vegard’s law. It is seen that results obtained from theory and experiments are all in agreement

A comparative anatomical study of the genus Puschkinia Adams in Turkey

In the study, Puschkinia scilloides Adams, P. bilgineri Yıldırım, and P. peshmenii Rix et B. Mathew were compared anatomically. Although the stem vascular bundles were arranged in two rows in P. peshmenii, they can observed in three rows in P. scilloides and P. bilgineri. In addition, some differences were found, such as the metaxylem number in the root, number of vascular bundles in the scape, presence of raphide crystals, and number of protruding epidermis cells at the tip of the leaf. These differences have been found to be taxonomically useful for distinguishing these species. Moreover, similarities and differences between Puschkinia Adams and the taxonomically closely related Scilla L. section Chionodoxa Boiss. and Scilla bifolia L. taxa were also discussed

Purification and characterization of dihydropyrimidine dehydrogenase enzyme from sheep liver and determination of the effects of some anaesthetic and antidepressant drugs on the enzyme activity

Dihydropyrimidine dehydrogenase (DPD, E.C. 1.3.1.2) was purified from sheep liver with a yield of 16.7%, purification fold of 407.5 and specific activity of 0.705 EU/mg proteins. The purification procedure consisted of ammonium sulphate fractionation, DEAE ion exchange chromatography and 2',5'-ADP Sepharose-4B affinity chromatography. The molecular weight determined by SDS-PAGE and was found 111 kDa. Optimum pH, ionic strength temperature and stable pH were determined as 8.0, 0.9 mM, 50 degrees C and 6.0, respectively. The kinetic parameters (K-m and V-max) of the enzyme were determined with NADPH as 22.97 mu M and 0.17 EU/mL, respectively. The same parameters were determined with uracil as 17.46 mu M and 0.14 EU/mL, respectively. Additionally, in vitro inhibitory effects of some antidepressant drugs including escitalopram, fluoxetine, mirtazapine, haloperidol and some anaesthetic drugs including propofol and lidocaine were investigated against DPD. In addition, IC50 values for each active drug obtained for escitalopram, fluoxetine, mirtazapine, haloperidol, propofol and lidocaine were determined as 1736.11, 13.24, 86.65, 99.03, 0.21 and 15.07 mu M, respectively

RSS-based wireless LAN indoor localization and tracking using deep architectures

Wireless Local Area Network (WLAN) positioning is a challenging task indoors due to environmental constraints and the unpredictable behavior of signal propagation, even at a fixed location. The aim of this work is to develop deep learning-based approaches for indoor localization and tracking by utilizing Received Signal Strength (RSS). The study proposes Multi-Layer Perceptron (MLP), One and Two Dimensional Convolutional Neural Networks (1D CNN and 2D CNN), and Long Short Term Memory (LSTM) deep networks architectures for WLAN indoor positioning based on the data obtained by actual RSS measurements from an existing WLAN infrastructure in a mobile user scenario. The results, using different types of deep architectures including MLP, CNNs, and LSTMs with existing WLAN algorithms, are presented. The Root Mean Square Error (RMSE) is used as the assessment criterion. The proposed LSTM Model 2 achieved a dynamic positioning RMSE error of 1.73 m, which outperforms probabilistic WLAN algorithms such as Memoryless Positioning (RMSE: 10.35 m) and Nonparametric Information (NI) filter with variable acceleration (RMSE: 5.2 m) under the same experiment environment.ECSEL Joint Undertaking ; European Union's H2020 Framework Programme (H2020/2014-2020) Grant ; National Authority TUBITA

Çokal Barajı (Çanakkale) çökme modeli ve taşkın risk analizi

The source of the hazard which is the main factor of disasters can be made by naturally or man. These are generally independent sources, but sometimes reason of one hazard such as flood can be both naturally and man-made. Certainly, all examples in our country and the world show that, the fail of constructed structures on the rivers (e.g. dam, embankment) produce a very large amount of water and damage more than the normal river floods. In this study, based on cofferdam of Çokal Dam breaching which occurred in 16 November 2007 on the Kavak River (Çanakkale), 1D modeling of probable Çokal Dam break take in the account tectonic properties of the area and analyzing of the flood risk have been done. For these purposes, Digital Elevation Model (DEM) gathered contours from 1:25000 scaled topographic maps and GPS points, high and medium resolution satellite images, hydrological soil data gathered from soil maps scaled 1:25000, precipitation and discharge data in 30 years, technical properties of structures on the Kavak River and field measurement have been used as a database. All these data is processed and analyzed using Geographic Information System (GIS), Hec-GeoRAS and HEC-RAS hydraulic models and hydrologic model. Hence, Çokal Dam break modeling based on cofferdam breach modeling reveals that probable flood after the dam-break will affect Evreşe Plain and the people which get livelihood from the plain. General probable lost in agricultural product after probable flood reaches TL 12 million. Thus, as a result of human interventions to the nature will cause great harm to himself again.   Afetlerin oluşmasında önemli etkiye sahip tehlikeler, doğa kaynaklı olabildikleri gibi insan kaynaklı da olabilmektedir. Bunlar genelde birbirinden bağımsız tehlike türleri iken bazen taşkınlar gibi kaynağını hem doğadan hem insandan alan tehlikeler olarak da karşımıza çıkmaktadır. Şüphesiz ki ülkemizdeki ve dünyadaki örneklerin tamamı ortaya koymuştur ki, insan kaynaklı olarak akarsular üzerine inşaa edilen yapıların (baraj, set vb.) bir şekilde zarar görmesiyle sonuçları normal taşkınlardan da fazla olmuştur. Bu çalışmada, 16 Kasım 2007'de Kavak Deresi (Çanakkale) üzerindeki Çokal Barajı menba batardosunda meydana gelen çökmenin oluşturduğu taşkına bağlı olarak, günümüz itibariyle halen yapımına devam edilen Çokal Barajı'nın sahanın tektonik özellikleri de gözönünde tutularak, olası çökmesinin tek boyutlu (1D) hidrolik modellemesi yapılmış ve buna bağlı taşkın risk analizi gerçekleştirilmiştir. Çalışmada altlık verileri, 1:25000 ölçekli topografik eşyükselti eğrisi ve saha GPS verileriyle üretilmiş Sayısal Yükselti Modeli (SYM), yüksek ve orta çözünürlüklü uydu görüntüleri, hidrolojik toprak  verileri, 30 yıllık yağış ve akım verileri, Kavak Dere üzerindeki yapılara ait teknik özellikler ve arazi ölçümleri oluşturmaktadır. Bütün bu altlık veriler Coğrafi Bilgi Sistemleri (CBS), Hec-GeoRAS ve HECRAS hidrolik modelleri  ve hidrolojik modellerde kullanılmış ve analiz edilmiştir. Sonuç olarak, menba batardosu çökme modeli temelinde oluşturulan Çokal Barajı çökme modeli göstermiştirki, olası baraj çökmesi sonucunda oluşacak taşkın, Evreşe Ovası ve buradan geçimini sağlayan insanlar için büyük zararlar ortaya çıkartacaktır. Sadece tarım ürünleri üzerindeki genel tahmini kayıplar 12 milyon TL yi bulmaktadır. Böylelikle insanın doğaya yapmış olduğu müdahale sonucunda yine insanın kendisi büyük zararlar görecektir.     &nbsp

Identification of Text Mining Use Cases In Manufacturing Companies

Manufacturing companies face the challenge of managing vast amounts of unstructured data generated by various sources such as social media, customer feedback, product reviews, and supplier data. Text-mining technology, a branch of data mining and natural language processing, provides a solution to extract valuable insights from unstructured data, enabling manufacturing companies to make informed decisions and improve their processes. Despite the potential benefits of text mining technology, many manufacturing companies struggle to implement use cases due to various reasons. Therefore, the project VoBAKI (IGF-Project No.: 22009 N) aims to enable manufacturing companies to identify and implement text mining use cases in their processes and decision-making processes. The paper presents an analysis of text mining use cases in manufacturing companies using Mayring's content analysis and case study research. The study aims to explore how text mining technology can be effectively used in improving production processes and decision-making in manufacturing companies

A new test for the homogeneity of inverse gaussian scale parameters based on computational approach test

In this paper, we focused on testing homogeneity of scale parameters of k Inverse Gaussian distributions (IGDs) since this distribution is one of the most common distribution for analyzing nonnegative right-skewed data. We have proposed a new test statistic based on the Computational Approach Test (CAT), which is a type of parametric bootstrap method, for testing homogeneity of scale parameters of k IGDs. Simulation results have been presented to compare the performances of the proposed method and existing methods such as the likelihood ratio test, modified likelihood ratio test and generalized likelihood ratio test in terms of type I error rate and power. The results showed that the proposed CAT is better than the others in terms of the type I error rates and powers in some cases

Adaptation of California Measure of Mental Motivation –CM3

Education without doubt, plays a vital role for individuals to gain the essential personal traits of the 21st century, also known as “knowledge age”. One of the most important skills among these fundamental qualities which the individuals should be equipped with is critical thinking. California Measure of Mental Motivation-CM3 was developed by Giancarlo, Blohm & Urdan (2004) to assess secondary school students’ critical thinking dispositions which is one of the characteristic components of critical thinking. Detecting secondary school students’ dispositions toward critical thinking is desired to be one of the main foci in many Turkish educational studies; however, it seems there is no Turkish psychological measurement instrument, assessing this feature among these age groups. Adapting this scale into Turkish culture will support the future studies on critical thinking by supplying a new instrument to the psychological measurement literature. The adaptation process has revealed that CM3 retains a four-factor structure in Turkish culture, similarly to the original form, and this structure has been confirmed by confirmatory factor analysis. In terms of the internal consistency, the Cronbach’s alpha reliability values have appeared to be between the reference values based in the literature. Furthermore, the test-retest reliability analysis has exposed considerably high level and significant correlation

Thoracopagus Conjoined Twins: A Case Report

Objective. Conjoined twin is a rarely seen congenital anomaly together with severe mortality and morbidity. The more common types of conjoined twins include the thoracopagus type, where the fusion is anterior, at the chest, and involves the heart. We are reporting one case of conjoined thoracopagus twins diagnosed by ultrasonography at 11 weeks. Case Report. In a multigravid pregnant woman who has been admitted to our clinic with a diagnosis of conjoined twins, thoracopagus, by ultrasonography at an 11-week gestation, termination of the pregnancy was performed. Conclusion. Making an early diagnosis with ultrasonographic examination gives the parents a chance to elect pregnancy termination