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Syntaxonomical Analysis Of The Riparian Vegetation Of The Porsuk River (Eskişehir-Kütahya/Turkey), Ebru Özdeni̇z, Lati̇f Kurt, Erwin Bergmeier
Syntaxonomical Analysis Of The Riparian Vegetation Of The Porsuk River (Eskişehir-Kütahya/Turkey), Ebru Özdeni̇z, Lati̇f Kurt, Erwin Bergmeier
Turkish Journal of Botany
This study is about the classification and syntaxonomic allocation of the riparian vegetation of the Porsuk River (Eskişehir-Kütahya, western part of Central Anatolia). The Porsuk is part of the Sakarya River basin and is the longest tributary of the Sakarya River. The data were collected using the phytosociological method of Braun-Blanquet and analyzed using TWINSPAN classification and NMDS ordination. Ten syntaxa were identified, all of which are more or less widespread in the nemoral and meridional zone. The woody alluvial vegetation of the study area comprises the associations Salicetum albae, Populetum albae, and Elymo-Rubetum caesii. The riparian reed bed vegetation …
Ontogenetic Changes In Nucleic Acid, Protein Contents, And Growthof Larval And Juvenile Japanese Flounder, Xue Hong Tong, Chengman Bao, Xinhui Tang, Xiaolan Yang, Huanli Wang
Ontogenetic Changes In Nucleic Acid, Protein Contents, And Growthof Larval And Juvenile Japanese Flounder, Xue Hong Tong, Chengman Bao, Xinhui Tang, Xiaolan Yang, Huanli Wang
Turkish Journal of Zoology
In order to estimate relationships among growth potential and biochemical indicators of Japanese flounder, RNA and DNA as well as protein indices were measured from 5 days after hatching (DAH) to 45 DAH. Results showed that the RNA/DNA ratio and protein/DNA ratio had obvious relations with instantaneous growth rate (GM) and length-based instantaneous growth rate (GL) during the premetamorphic period. Significant negative correlations among protein/DNA ratio and GM and GL were then observed during metamorphosis. During the postmetamorphic phase, the RNA/DNA ratio was positively correlated with GM and GL. Data indicated that body growth of Japanese flounder is mostly hyperplastic …
New Records Of Springtail Fauna (Hexapoda: Collembola: Entomobryomorpha)From Ordu Province In Turkey, Muhammet Ali̇ Özata, Hasan Sevgi̇li̇, Igor J. Kaprus
New Records Of Springtail Fauna (Hexapoda: Collembola: Entomobryomorpha)From Ordu Province In Turkey, Muhammet Ali̇ Özata, Hasan Sevgi̇li̇, Igor J. Kaprus
Turkish Journal of Zoology
This study aims to elucidate the Collembola fauna of the province of Ordu, which is situated between the Middle and Eastern Black Sea regions of Turkey. Although a large number of Collembolan specimens had been collected, only Entomobryomorpha species were given emphasis. From 44 different sampled localities of the province of Ordu, we recorded 6 families, 14 genera, and 28 species. Six of these species were previously recorded and 20 of them are new records for Turkey. The results were not surprising, considering that the sampled region had not been studied previously, quite like many habitats in Turkey. With our …
Anatrachyntis Badia (Hodges, 1962) (Lepidoptera: Cosmopterigidae): The First Report From Turkey And A Case Of Importation To Poland, Lukasz Dawidowicz, Robert Rozwa?Ka
Anatrachyntis Badia (Hodges, 1962) (Lepidoptera: Cosmopterigidae): The First Report From Turkey And A Case Of Importation To Poland, Lukasz Dawidowicz, Robert Rozwa?Ka
Turkish Journal of Zoology
Anatrachyntis badia (Hodges, 1962) (Lepidoptera: Cosmopterigidae) is an opportunistic species native to the southern part of North America. This species was given from several dozens of plants therein from many cultivable plants, such as limes, grapefruits, bananas, peaches, cabbage, blossoms of coconut, Cycas spp., and even pine cones. Thus, it was accidentally introduced to many other countries with appropriate climate with some plants. It can be considered as a plant pest in some cases (e.g., sorghum). The species quite often occurs conjointly with other pest insects, such as mealybug or honeydew moth Cryptoblabes gnidiella (Milliere, 1867) (Lepidoptera: Pyralidae). This paper …
Dna Sequencing Of Digenea Nuclear Lsrdna Of The Whiskered Brown Bat,Myotis Aurescens (Vespertilionidae: Chiroptera), From Turkey, Nurhan Sümer, Hi̇kmet Sami̇ Yildirimhan
Dna Sequencing Of Digenea Nuclear Lsrdna Of The Whiskered Brown Bat,Myotis Aurescens (Vespertilionidae: Chiroptera), From Turkey, Nurhan Sümer, Hi̇kmet Sami̇ Yildirimhan
Turkish Journal of Zoology
Six species of Trematoda (Prosthodendrium ascidia, Prosthodendrium longiforme, Lecithodendrium linstowi, Plagiorchis muelleri, Plagiorchis vespertilionis, and Plagiorchis koreanus) of Myotis aurescens from Bursa Province, Turkey, were examined for DNA sequencing of the 28S ribosomal gene region. A partial sequence of the 28S ribosomal gene from digenean species was studied using BLAST and found to be a useful region for helminth species diagnosis.
The Phenology Of Pulvinaria Floccifera Westwood (Hemiptera: Coccomorpha: Coccidae), A New Invasive Pest On Ornamentals Outdoors In Poland, Bozena Lagowska, Katarzyna Golan, Katarzyna Kmiec, Izabela Kot, Edyta Gorska Drabik, Katarzyna Goliszek
The Phenology Of Pulvinaria Floccifera Westwood (Hemiptera: Coccomorpha: Coccidae), A New Invasive Pest On Ornamentals Outdoors In Poland, Bozena Lagowska, Katarzyna Golan, Katarzyna Kmiec, Izabela Kot, Edyta Gorska Drabik, Katarzyna Goliszek
Turkish Journal of Zoology
The phenology of Pulvinaria floccifera infesting common holly was studied from June 2009 to October 2011 in Central Poland. Live specimens were most abundant on the leaves in July and August, while dead individuals were most numerous in winter and early spring each year. The scale completed one generation per year in the field and both the second and third instar nymphs overwintered. Following the spring molting to the 3rd instar or to the young adult females were observed in April and early May. The young adult females were first recorded in the second 10-day period of May. Oviposition occurred …
A Taxonomic Study On The Families Lecanidae And Lepadellidae (Rotifera: Monogononta) Of Turkey And Three New Records For Turkish Inland Waters, Ahmet Bozkurt
Turkish Journal of Zoology
In this study, 39 rotifer species from the families Lecanidae and Lepadellidae were identified after examination of samples collected from 47 different localities in Turkey. Lecane acanthinula, L. thalera, and L. unguitata are new records for the Turkish rotifer fauna.
Morphological And Molecular Characterization And Phylogenetic Position Of A Newrecord, Tylenchorhynchus Zeae, And Some Known Species Of Telotylenchidae Siddiqi,1960 And Merliniidae Siddiqi, 1971 From Iran, Somaye Alvani, Esmat Mahdikhani Moghaddam, Hamid Rouhani, Abbas Mohammadi
Morphological And Molecular Characterization And Phylogenetic Position Of A Newrecord, Tylenchorhynchus Zeae, And Some Known Species Of Telotylenchidae Siddiqi,1960 And Merliniidae Siddiqi, 1971 From Iran, Somaye Alvani, Esmat Mahdikhani Moghaddam, Hamid Rouhani, Abbas Mohammadi
Turkish Journal of Zoology
In order to identify the plant-parasitic nematodes associated with Berberis vulgaris, Crocus sativus, and Ziziphus zizyphus, 360 soil samples were collected from the rhizosphere of these plants in the South Khorasan Province of Iran during 2012-2014. Among the identified species, Tylenchorhynchus zeae Sethi and Swarup, 1968 of Telotylenchidae Siddiqi, 1960 is a new record from Iran and the isolate is described and illustrated based on morphological, morphometric, and molecular characteristics. The phylogenetic tree inferred from partial sequences of the 28S rRNA (D2D3 segments) grouped the Iranian isolate with other T. zeae sequences, forming a strongly supported clade (Bayesian posterior probability: …
Comparison Of Trophic Structure Of The Benthic Macroinvertebratesin Three Bulgarian Riverine Water Bodies, Maria Kerakova, Yordan Uzunov, Emilia Varadinova
Comparison Of Trophic Structure Of The Benthic Macroinvertebratesin Three Bulgarian Riverine Water Bodies, Maria Kerakova, Yordan Uzunov, Emilia Varadinova
Turkish Journal of Zoology
The trophic structure of benthic macroinvertebrates in three different types of running water bodies subjected to varying degrees of anthropogenic pressure was analyzed. A seasonal survey was conducted at three Bulgarian rivers in 2011. An adapted version of the multihabitat sampling method was applied along with measuring physical and chemical variables. The ecological status was defined by means of biotic and trophic indexes. Distribution of the functional feeding groups shows that the most sensitive groups, shredders and scrapers, dominate the trophic structure of the mountain river types. In contrast, groups of deposit feeders and filterers prevail at the foothill and …
Current Status Of Coral Reefs In Tioman Island, Peninsular Malaysia, Saad Shahbudin, Khodzori Fikri Akmal, Salleh Faris, Mohammad-Noor Normawaty, Yukinori Mukai
Current Status Of Coral Reefs In Tioman Island, Peninsular Malaysia, Saad Shahbudin, Khodzori Fikri Akmal, Salleh Faris, Mohammad-Noor Normawaty, Yukinori Mukai
Turkish Journal of Zoology
The present study aimed to determine the current status of corals using the coral video transect (CVT) method in the east coast, west coast, and isolated areas of Tioman Island, Peninsular Malaysia. A total of 65 genera from 21 families of corals were identified, from which the scleractinian corals of Acropora, Montipora, and Porites were dominant in the coral assemblages. Nine reef sites were categorised as having 'good' (51.4%-60.3%) coral condition and four reef sites as having 'fair' (37.6%-49.2%) coral condition. This study concluded that the reefs around Tioman Island were in 'good' average coral condition and have high generic …
New Data On Hahnia C.L. Koch, 1841 From Crimea (Aranei: Hahniidae), Mykola Kovblyuk, Zoya Kastrygina, Yuri Marusik
New Data On Hahnia C.L. Koch, 1841 From Crimea (Aranei: Hahniidae), Mykola Kovblyuk, Zoya Kastrygina, Yuri Marusik
Turkish Journal of Zoology
Four species of Hahnia are recorded from Crimea: H. helveola Simon, 1875; H. nava (Blackwall, 1841); H. ononidum Simon, 1875; and H. pusilla C.L. Koch, 1841. Two species, namely H. ononidum and H. pusilla, are recorded from Crimea for the first time. Crimea is the easternmost point of the known range for H. helveola. Illustrations, diagnoses, distribution data, habitats, and seasonal dynamics of activity are presented.
The Blood Sucking Lice (Phthiraptera: Anoplura) Of Croatia: Review And New Data, Stjepan Krcmar, Tomi Trilar
The Blood Sucking Lice (Phthiraptera: Anoplura) Of Croatia: Review And New Data, Stjepan Krcmar, Tomi Trilar
Turkish Journal of Zoology
The present faunistic study of blood sucking lice (Phthiraptera: Anoplura) has resulted in the recording of the 4 species: Hoplopleura acanthopus (Burmeister, 1839); Ho. affinis (Burmeister, 1839); Polyplax serrata (Burmeister, 1839), and Haematopinus apri Goureau, 1866 newly reported for the fauna of Croatia. Thirteen species and 2 subspecies are currently known from Croatia, belonging to 6 families. Linognathidae and Haematopinidae are the best represented families, with four species each, followed by Hoplopleuridae and Polyplacidae with two species each, Pediculidae with two subspecies, and Pthiridae with one species. Blood sucking lice were collected from 18 different host species. Three taxa, one …
The Chironomidae (Diptera) Fauna Of Kırklareli Province, Gazel Burcu Aydin, Hüseyi̇n Güher
The Chironomidae (Diptera) Fauna Of Kırklareli Province, Gazel Burcu Aydin, Hüseyi̇n Güher
Turkish Journal of Zoology
Larval and adult material collected from July 2012 to July 2013 and previously collected larval material were evaluated taxonomically to determine the Chironomidae (Diptera) fauna of Kırklareli Province. Accordingly, a total of 64 species belonging to the subfamilies Tanypodinae, Prodiamesinae, Orthocladinae, and Chironominae of the family Chironomidae were determined, of which Camptocladius stercorarius (De Geer, 1776), Corynoneura sp., Paratanytarsus sp., Ablabesmyia (Ablabesmyia) phatta (Eggert, 1863), Chironomus semireductus (Lenz, 1924), Einfeldia carbonaria (Meigen, 1804), Metriocnemus (Metriocnemus) fuscipes (Meigen, 1818), Rheocricotopus (Rheocricotopus) fuscipes (Kieffer, 1909), and Stictochironomus sp. were determined as new records for Kırklareli Province, Acricotopus lucens (Zetterstedt, 1850), Brillia flavifrons …
List Of Encyrtids (Hymenoptera: Encyrtidae) From Subalpine And Alpine Zones Oflagodekhi Protected Areas With New Records From Georgia And Transcaucasia, George Japoshvili, Meri Salakaia, Giorgi Kirkitadze, Marine Batsankalashvili
List Of Encyrtids (Hymenoptera: Encyrtidae) From Subalpine And Alpine Zones Oflagodekhi Protected Areas With New Records From Georgia And Transcaucasia, George Japoshvili, Meri Salakaia, Giorgi Kirkitadze, Marine Batsankalashvili
Turkish Journal of Zoology
Two genera, Coelopencyrtus Timberlake, 1919 and Mayrencyrtus Hincks, 1944, are reported here for the first time from Transcaucasia. Fourteen new records of encyrtid species from Georgia are reported. Except for 4 species (Bothriothorax aralius (Walker, 1837); B. clavicornis (Dalman, 1820); B. trichops Thomson, 1876; and Cheiloneurus submuticus Thomson, 1876), all species are recorded for the first time from Transcaucasia.
Discovery Of The Genus Mirodryinus Ponomarenko, 1972 (Hymenoptera, Chrysidoidea,Dryinidae) Associated With Salt Cedar Trees In The Eastern Part Of Iran, Hossein Ali Derafshan, Ehsan Rakhshani, Massimo Olmi, Mehri Vafaei
Discovery Of The Genus Mirodryinus Ponomarenko, 1972 (Hymenoptera, Chrysidoidea,Dryinidae) Associated With Salt Cedar Trees In The Eastern Part Of Iran, Hossein Ali Derafshan, Ehsan Rakhshani, Massimo Olmi, Mehri Vafaei
Turkish Journal of Zoology
In 2015 and 2016 a survey was carried out on the parasitoids of leafhoppers (Hemiptera, Cicadomorpha) feeding on salt cedar trees (Tamarix spp.) growing around Hamoon Lake in the Sistan region (Iran). Among the collected material, a series of dryinid specimens belonging to Mirodryinus atlanticus Olmi, 1984 (Hymenoptera, Dryinidae, Bocchinae) was captured on branches of Tamarix aphylla (L.) Karst. and Tamarix stricta Boiss., infested by Opsius versicolor (Distant) (Hemiptera, Cicadellidae). The subfamily Bocchinae and the genus Mirodryinus Ponomarenko, 1972 are new records for Iran. Diagnostic characters and notes on the morphological variability of the newly collected specimens are presented and …
The Influence Of Temperature On The Hibernation Patterns And Activity Ofvertigo Moulinsiana (Dupuy, 1849) (Gastropoda: Pulmonata: Vertiginidae), Zofia Ksiazkiewicz Parulska, Katarzyna Pawlak
The Influence Of Temperature On The Hibernation Patterns And Activity Ofvertigo Moulinsiana (Dupuy, 1849) (Gastropoda: Pulmonata: Vertiginidae), Zofia Ksiazkiewicz Parulska, Katarzyna Pawlak
Turkish Journal of Zoology
The aim of this study was to investigate the impact of different temperatures, i.e. 11 °C and 21 °C, in conditions of medium relative humidity on the rate of awakening of Vertigo moulinsiana after hibernation and its activity during the following 7 days. Oneway ANOVA did not show statistically significant differences in timings of awakening and activity between individuals kept at 11 °C and 21 °C during the first day of the study. The 1-week observations of the activity of V. moulinsiana showed significant differences in relation to temperature. Snails were more active at the lower temperature, which may be …
Macroinvertebrate-Based Biotic Indices For Evaluating Thewater Quality Of Kargı Stream (Antalya, Turkey), Melek Zeybek
Macroinvertebrate-Based Biotic Indices For Evaluating Thewater Quality Of Kargı Stream (Antalya, Turkey), Melek Zeybek
Turkish Journal of Zoology
The aim of this study was to determine the water quality of Kargı Stream, Antalya, Turkey, in terms of physical and chemical parameters and biotic indices. For this purpose, macrozoobenthic invertebrates and water samples were taken from each of the selected seven stations seasonally. The Belgian Biotic Index, BMWP and ASPT indices, and species diversity indices were applied for determining the water quality by using the ASTERICS software program. With the identification of the collected organisms, a total of 126 taxa including 4 taxa from Gastropoda, 5 taxa from Oligochaeta, 1 taxon from Malacostraca, 84 taxa from Insecta, and 32 …
Description Of A New Species Of Hersiliola And The Male Ofduninia Rheimsae Marusik & Fet, 2009 From Iran (Araneae: Hersiliidae), Alireza Zamani, Omid Mirshamsi, Yuri Marusik
Description Of A New Species Of Hersiliola And The Male Ofduninia Rheimsae Marusik & Fet, 2009 From Iran (Araneae: Hersiliidae), Alireza Zamani, Omid Mirshamsi, Yuri Marusik
Turkish Journal of Zoology
Hersiliola artemisiae sp. nov. is described from central and south-central regions of Iran. In addition, the male of Duninia rheimsae Marusik & Fet, 2009 is described for the first time and compared with two other congeners, D. darvishi Mirshamsi & Marusik, 2013 and D. baehrae Marusik & Fet, 2009.
Distribution Of Rotifers Of High Mountain Lakes In The Eastern Black Sea Range Of Turkey, Di̇dem Özdemi̇r Mi̇s, Mustafa Ruşen Ustaoğlu
Distribution Of Rotifers Of High Mountain Lakes In The Eastern Black Sea Range Of Turkey, Di̇dem Özdemi̇r Mi̇s, Mustafa Ruşen Ustaoğlu
Turkish Journal of Zoology
Six expeditions were conducted in 2005-2007 on the rotifer fauna of 59 high mountain lakes of the Eastern Black Sea Range. All of the lakes are located at altitudes between 2530 and 3370 m except Uzungöl (1100 m). A total of 63 rotifer taxa were identified. All of the taxa that were identified are new records for their localities except Notholca squamula and Cephalodella gibba. Dissotrocha macrostyla, Hexarthra jenkinae, Lecane clara, Lecane kluchor, and Lecane latissima are new records for the Turkish inland water fauna. The trophic classification based on the orthophosphate includes 22 lakes as ultraoligotrophic and 37 lakes …
Identifying The Hotspots Of Wildlife-Vehicle Collision On The Çankırı-Kırıkkale Highway During Summer, Ali̇ Uğur Özcan, Nuri̇ Kaan Özkazanç
Identifying The Hotspots Of Wildlife-Vehicle Collision On The Çankırı-Kırıkkale Highway During Summer, Ali̇ Uğur Özcan, Nuri̇ Kaan Özkazanç
Turkish Journal of Zoology
In this study, we identified hotspots of mammal-vehicle collisions that occurred on the Çankırı-Kırıkkale highway between May and October 2014. We collected 58 records from 6 species. Sixteen casualties occurred on the part of the road with low traffic volume (1818 vehicles/day) and 42 casualties occurred on the part with moderate traffic volume (4680 vehicles/day). The two species with the highest number of records were hedgehog Erinaceus concolor (n = 27) and red fox Vulpes vulpes (n = 21). Hotspots of mammal-vehicle collisions were detected with the CrimeStat3 program using 750-m bandwidth. We identified two spots of high incidence of …
Invertebrate Infestation In Green Turtle (Chelonia Mydas (Linnaeus, 1758)) Andloggerhead Turtle (Caretta Caretta (Linnaeus, 1758)) Nests On Alata Beach, Mersin, Turkey, Cemi̇l Aymak, Remzi̇ye Serap Ergene, Yusuf Katilmiş, Aşkin Hasan Uçar
Invertebrate Infestation In Green Turtle (Chelonia Mydas (Linnaeus, 1758)) Andloggerhead Turtle (Caretta Caretta (Linnaeus, 1758)) Nests On Alata Beach, Mersin, Turkey, Cemi̇l Aymak, Remzi̇ye Serap Ergene, Yusuf Katilmiş, Aşkin Hasan Uçar
Turkish Journal of Zoology
Invertebrate infestation in sea turtle nests (Caretta caretta and Chelonia mydas) was recorded for the first time for Alata beach, Mersin, Turkey. A total of 121 green and 32 loggerhead nests were recorded and 34 (22.22%) of these were examined in terms of the invertebrate faunal composition. The specimens found in the nests were identified to order, family, or genus levels and they were represented as 5 orders. These invertebrate groups are Pimelia sp. larvae (Tenebrionidae; Coleoptera), Elater sp. larvae (Elateridae; Coleoptera), Scarabaeidae larvae (Coleoptera), Muscidae (Diptera), Enchytraeidae (Oligochaeta), Myrmeleontidae (Neuroptera), and Cyrptostigmata (Acari).
A New Efficient Block Matching Data Hiding Method Based On Scanning Order Selection In Medical Images, Turgay Aydoğan, Cüneyt Bayilmiş
A New Efficient Block Matching Data Hiding Method Based On Scanning Order Selection In Medical Images, Turgay Aydoğan, Cüneyt Bayilmiş
Turkish Journal of Electrical Engineering and Computer Sciences
Digital technology and the widespread use of the Internet has increased the speeds at which digital data can be obtained and shared in daily life. In parallel to this, there are important concerns regarding the confidentiality of private data during data transmissions and the possibility that data might fall into the hands of third parties. Issues relating to data safety can also affect patients' medical images and other information relating to these images. In this study, we propose a new method based on block matching that can be used to hide the patient information in medical images. In this method, …
Protein Fold Classification With Grow-And-Learn Network, Özlem Polat, Zümray Dokur
Protein Fold Classification With Grow-And-Learn Network, Özlem Polat, Zümray Dokur
Turkish Journal of Electrical Engineering and Computer Sciences
Protein fold classification is an important subject in computational biology and a compelling work from the point of machine learning. To deal with such a challenging problem, in this study, we propose a solution method for the classification of protein folds using Grow-and-Learn (GAL) neural network together with one-versus-others (OvO) method. To classify the most common 27 protein folds, 125 dimensional data, constituted by the physicochemical properties of amino acids, are used. The study is conducted on a database including 694 proteins: 311 of these proteins are used for training and 383 of them for testing. Overall, the classification system …
E-Mfdbscan: An Evolutionary Clustering Algorithm For Gene Expression Time Series, Atakan Erdem, Taflan İmre Gündem
E-Mfdbscan: An Evolutionary Clustering Algorithm For Gene Expression Time Series, Atakan Erdem, Taflan İmre Gündem
Turkish Journal of Electrical Engineering and Computer Sciences
DNA microarray experiments are frequently used because they have various advantages. However, gene expression data from DNA microarray experiments are noisy, and, consequently, the computations that are based on such noisy data may lack accuracy. In this paper, an evolutionary uncertain data-clustering algorithm, E-MFDBSCAN, and a prediction model using E-MFDBSCAN for uncertain data are proposed. The proposed methodology may be successfully applied to noisy gene expression data. In this methodology, global patterns of time series data can be extracted using our evolutionary clustering approach. These patterns are used to infer future projections. In the proposed methodology, an autoregressive time series …
Low-Frequency Exposure Analysis Using Electric And Magnetic Field Measurements And Predictions In The Proximity Of Power Transmission Lines In Urban Areas, Hamza Feza Carlak, Şükrü Özen, Süleyman Bi̇lgi̇n
Low-Frequency Exposure Analysis Using Electric And Magnetic Field Measurements And Predictions In The Proximity Of Power Transmission Lines In Urban Areas, Hamza Feza Carlak, Şükrü Özen, Süleyman Bi̇lgi̇n
Turkish Journal of Electrical Engineering and Computer Sciences
In recent years, increasing energy demand has resulted in more loading in power transmission lines and correspondingly more electric and magnetic field occurrence. In this paper, electric and magnetic field levels around high voltage power transmission lines are measured and then calculated analytically by simulating the realistic case. Moreover, the field levels around these power lines have been predicted using multilayer perceptron artificial neural network (ANN) and generalized regression neural network models. Typical 154 kV power transmission line facilities of Turkey have been studied. Electric and magnetic field levels in the proximity of power transmission lines have been predicted with …
A Neural Network Approach To Navigation Of A Mobile Robot And Obstacle Avoidance In Dynamic And Unknown Environments, Farhad Shamsfakhr, Bahram Sadeghi Bigham
A Neural Network Approach To Navigation Of A Mobile Robot And Obstacle Avoidance In Dynamic And Unknown Environments, Farhad Shamsfakhr, Bahram Sadeghi Bigham
Turkish Journal of Electrical Engineering and Computer Sciences
Mobile robot navigation and obstacle avoidance in dynamic and unknown environments is one of the most challenging problems in the field of robotics. Considering that a robot must be able to interact with the surrounding environment and respond to it in real time, and given the limited sensing range, inaccurate data, and noisy sensor readings, this problem becomes even more acute. In this paper, we attempt to develop a neural network approach equipped with statistical dimension reduction techniques to perform exact and fast robot navigation, as well as obstacle avoidance in such a manner. In order to increase the speed …
Using Latent Semantic Analysis For Automated Keyword Extraction From Large Document Corpora, Tuğba Önal Süzek
Using Latent Semantic Analysis For Automated Keyword Extraction From Large Document Corpora, Tuğba Önal Süzek
Turkish Journal of Electrical Engineering and Computer Sciences
In this study, we describe a keyword extraction technique that uses latent semantic analysis (LSA) to identify semantically important single topic words or keywords. We compare our method against two other automated keyword extractors, Tf-idf (term frequency-inverse document frequency) and Metamap, using human-annotated keywords as a reference. Our results suggest that the LSA-based keyword extraction method performs comparably to the other techniques. Therefore, in an incremental update setting, the LSA-based keyword extraction method can be preferably used to extract keywords from text descriptions from big data when compared to existing keyword extraction methods.
Existence And Global Attractivity Of Periodic Solutions In A Max-Type System Of Difference Equations, Imane Dekkar, Nouressadat Touafek
Existence And Global Attractivity Of Periodic Solutions In A Max-Type System Of Difference Equations, Imane Dekkar, Nouressadat Touafek
Turkish Journal of Mathematics
We consider in this paper the following system of difference equations with maximum $$ \left\{ \begin{array}{lll} x(n+1)= & \max\{f_1(n,x(n)),g_1(n,y(n))\}& \\ & &, ~~ n=0,1,2, \ldots, \\ y(n+1)= & \max\{f_2(n,x(n)),g_2(n,y(n))\} & \\ \end{array} \right.$$ where $f_i, g_i$, $i=1,2$, are real-valued functions with periodic coefficients. We use the Banach fixed point theorem to get a sufficient condition under which this system admits a unique periodic solution. Moreover, we show that this periodic solution attracts all the solutions of the current system. Some examples are also given to illustrate our results.
Stability Analysis Of Nonlinear Fractional Differential Order Systems With Caputo And Riemann--Liouville Derivatives, Javad Alidousti, Reza Khoshsiar Ghaziani, Ali Bayati Eshkaftaki
Stability Analysis Of Nonlinear Fractional Differential Order Systems With Caputo And Riemann--Liouville Derivatives, Javad Alidousti, Reza Khoshsiar Ghaziani, Ali Bayati Eshkaftaki
Turkish Journal of Mathematics
In this paper we establish stability theorems for nonlinear fractional orders systems (FDEs) with Caputo and Riemann--Liouville derivatives. In particular, we derive conditions for $ {\bf \cal{F}}$-stability of nonlinear FDEs. By numerical simulations, we verify numerically our theoretical results on a test example.
Co-Existence Of Bovine Viral Diarrhea And Border Disease Viruses In A Sheep Flock Suffering From Abortus And Diarrhea, Peli̇n Tuncer Göktuna, Gi̇zem Alpay, Eda Baldan Öner, Kadi̇r Yeşi̇lbağ
Co-Existence Of Bovine Viral Diarrhea And Border Disease Viruses In A Sheep Flock Suffering From Abortus And Diarrhea, Peli̇n Tuncer Göktuna, Gi̇zem Alpay, Eda Baldan Öner, Kadi̇r Yeşi̇lbağ
Turkish Journal of Veterinary & Animal Sciences
Pestivirus infections have a huge economic impact on livestock production. In 2014, an aborted fetus from a sheep flock suffering from abortus and diarrhea was submitted for virological diagnosis. Due to the positive result of the sample for pestivirus and continuing clinical symptoms in the flock, all of the animals were sampled individually. Blood samples for serum and peripheral blood mononuclear cells were collected from 93 animals (5 rams, 26 lambs, and 62 sheep). During sampling 1 ocular and 4 rectal swab samples were obtained from lambs that had a clinical eye problem and diarrhea, respectively. Additionally 5 aborted fetuses …