Open Access. Powered by Scholars. Published by Universities.®

Digital Commons Network™

Open Access. Powered by Scholars. Published by Universities.®

2018

Discipline
Institution
Keyword
Publication
Publication Type
File Type

Articles 169501 - 169530 of 169965

Full-Text Articles in Entire DC Network

Genetic And Phenotypic Variation Among Turkish Terrestrial Orchidspecies As Revealed By Rapd And Morphological Characteristics, Gülden Sandal Erzurumlu, Nusrat Sultana, Mehtap Vural, Sedat Serçe Jan 2018

Genetic And Phenotypic Variation Among Turkish Terrestrial Orchidspecies As Revealed By Rapd And Morphological Characteristics, Gülden Sandal Erzurumlu, Nusrat Sultana, Mehtap Vural, Sedat Serçe

Turkish Journal of Agriculture and Forestry

Terrestrial orchid species are natural sources of salep and a closely related group of plant species widely distributed throughout Turkey. The phylogenetic relationship among fourteen different tuber-producing orchid species was investigated after analyzing phenotypic and genetic variation within and among the natural population through fifteen morphometric traits and ten random amplified polymorphic DNA (RAPD) primer combinations. Statistical analyses (principal component analysis (PCA), principal coordinate analysis (PCoA), and cluster analysis) using the generated data identified taxonomic and genetic distance within the studied plant samples. The results of PCA from morphological traits show that there are no major groupings within and among …


Boron And Maturity Effects On Biochemical Parameters And Antioxidantactivity Of Pepper (Capsicum Annuum L.) Cultivars, Eleana Sarafi, Anastasios Siomos, Pavlos Tsouvaltzis, Christos Chatzissavvidis, Ioannis Therios Jan 2018

Boron And Maturity Effects On Biochemical Parameters And Antioxidantactivity Of Pepper (Capsicum Annuum L.) Cultivars, Eleana Sarafi, Anastasios Siomos, Pavlos Tsouvaltzis, Christos Chatzissavvidis, Ioannis Therios

Turkish Journal of Agriculture and Forestry

Pepper fruit (Capsicum annuumL.) is one of the best sources of carotenoids, carbohydrates, flavonoids, phenols, and antioxidant activity important in the human diet. The levels of bioactive compounds are variable and may be affected by cultivar, maturity stage, and boron concentration in the soil solution. A greenhouse experiment was conducted with the pepper cultivars Solario, Osho, Odysseo, and Arlequin treated with 5 boron concentrations (0.5, 1, 2.5, 5, and 10 mg B L-1) for 70 days. Fruits were sampled at 40 and 70 days and the concentration of carbohydrates, carotenoids, flavonoids, total phenols, and antioxidant activity (FRAP, DPPH) were measured. …


Isoflavone Profile Diversity In Korean Wild Soybeans (Glycine Soja Sieb. & Zucc.), Chigen Tsukamoto, Muhammad Amjad Nawaz, Ayaka Kurosaka, Bao Le, Jeong Dong Lee, Eunho Son, Seung Hwan Yang, Cemal Kurt, Faheem Shahzad Baloch, Gyuhwa Chung Jan 2018

Isoflavone Profile Diversity In Korean Wild Soybeans (Glycine Soja Sieb. & Zucc.), Chigen Tsukamoto, Muhammad Amjad Nawaz, Ayaka Kurosaka, Bao Le, Jeong Dong Lee, Eunho Son, Seung Hwan Yang, Cemal Kurt, Faheem Shahzad Baloch, Gyuhwa Chung

Turkish Journal of Agriculture and Forestry

Isoflavones prevent the incidence of cancer, reduce cardiovascular problems, and decrease menopausal symptoms. In soybean (Glycine soja Sieb. & Zucc.) seeds, the content is greatly affected by growing conditions. The variations in soy-isoflavone content were investigated by growing 346 Korean wild soybean accessions from natural habitats under the same agroclimatic conditions. High-performance liquid chromatography was used to measure the profiles of six soy-isoflavones, i.e. glycosides (daidzin, glycitin, genistin) and malonyl glycosides (malonyl-daidzin, malonyl-glycitin, and malonyl-genistin). The soy-isoflavone content of the wild soybeans ranged from 0.5 to 5.51 mg/g with an average of 2.78 mg/g. The highest mean total soy-isoflavone was …


Environmental And Soil Variables Affecting The Structure And Floristicwoody Composition Of Oak Forests Of Northeastern Mexico, Juan Antonio Encina-Domínguez, José Ramón Arévalo Sierra, Eduardo Estrada Castillon, Miguel Mellado Bosque Jan 2018

Environmental And Soil Variables Affecting The Structure And Floristicwoody Composition Of Oak Forests Of Northeastern Mexico, Juan Antonio Encina-Domínguez, José Ramón Arévalo Sierra, Eduardo Estrada Castillon, Miguel Mellado Bosque

Turkish Journal of Agriculture and Forestry

The objective of this study was to investigate the influence of environmental and soil factors on the structure and floristic woody composition of oak forests. Oak forests of the Sierra de Zapalinamé in northeastern Mexico (25°N) are distributed in canyons and northwest slopes with higher humidity, surrounded by montane chaparral. We carried out a vegetation inventory across an altitudinal gradient. All trees with diameter at breast height of =>3 cm were identified and measured. In addition, the cover of understory species was measured in each plot. Using multivariate techniques, we detected two oak forest associations: Quercus greggii - Q. …


The Effect Of Perlan And Bud Management On Growth, Lateral Shoots,And The Precocity Of Cherry Nursery Trees, Ramazan Toprak, Di̇lek Soysal, Hüsnü Demi̇rsoy Jan 2018

The Effect Of Perlan And Bud Management On Growth, Lateral Shoots,And The Precocity Of Cherry Nursery Trees, Ramazan Toprak, Di̇lek Soysal, Hüsnü Demi̇rsoy

Turkish Journal of Agriculture and Forestry

The sweet cherry tree shows an acrotonic growth habit and grows as a forest wood. Apical dominance is important in sweet cherries and commercial growth is not possible without human intervention. It is thus difficult to obtain a good tree shape and enough shoots and leaves for quality and a plentiful crop in cherry trees. For this reason, many studies have been carried out in cherries to obtain enough lateral shoots and leaves using different methods. These procedures included Perlan application, pruning (heading), bud management (bud selection, bud removal), girdling, notching, and scoring. The present study aimed to encourage leaf …


Effects Of Wheel Traffic And Farmyard Manure Applications On Soilco2 Emission And Soil Oxygen Content, Sefa Altikat, Hasan Kaan Küçükerdem, Aysun Altikat Jan 2018

Effects Of Wheel Traffic And Farmyard Manure Applications On Soilco2 Emission And Soil Oxygen Content, Sefa Altikat, Hasan Kaan Küçükerdem, Aysun Altikat

Turkish Journal of Agriculture and Forestry

This 2-year field study investigated the effects of different wheel traffic passes, manure amounts, and manure application methods on soil temperature, soil moisture, CO2 emission, and soil O2 content. To achieve this purpose, three different wheel traffic applications (no traffic, one pass, and two passes) were used. In the experiments, two different methods of manure applications (surface and subsurface) and three different farmyard manure amounts were used with a control plot (N0), 40 Mg ha-1 (N40), and 80 Mg ha-1 (N80). Manure was applied in both years of the experiment in the first week of April. For the subsurface application, …


Cover And Contents Jan 2018

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.


Multivariate Statistical Analyses For Studying Kenaf Germination, Growth, And Fiber Production Under Salinity Constraint, Rekaya Ayadi, Rayda Ben Ayed, Nejla Lassoued, Hichem Ben Salem, Mohamed Larbi Khouja, Lamia Hamrouni, Mohsen Hanana Jan 2018

Multivariate Statistical Analyses For Studying Kenaf Germination, Growth, And Fiber Production Under Salinity Constraint, Rekaya Ayadi, Rayda Ben Ayed, Nejla Lassoued, Hichem Ben Salem, Mohamed Larbi Khouja, Lamia Hamrouni, Mohsen Hanana

Turkish Journal of Agriculture and Forestry

It is due to the lack of renewable fiber sources for industrial purposes that the need for finding available and alternative material has become imperative. Kenaf (Hibiscus cannabinus L.), a fast-growing industrial crop, would be a potential solution for valorizing salinized lands and/or soils irrigated with saline water. With the aim of selecting and valorizing salt-tolerant species with high fiber yields and industrial values, we launched the assessment of the performance of kenaf culture (var. Guangdong 743-2) under salinity constraints. Germination and vegetative stages were considered in the present study to better evaluate the whole life cycle of the species. …


Determination Of Flower Bud Drop And Anomalies Underdifferent Ecological Conditions Of Some Apricot Cultivars, Ni̇hal Acarsoy, Adalet Misirli Jan 2018

Determination Of Flower Bud Drop And Anomalies Underdifferent Ecological Conditions Of Some Apricot Cultivars, Ni̇hal Acarsoy, Adalet Misirli

Turkish Journal of Agriculture and Forestry

Efficiency in fruit trees is connected with flower quantity and quality. Flower abortions occur largely depending on locations and years in apricot varieties that are selective in terms of climate requirements. In this study carried out with varieties having a wide range of chilling requirements in İzmir and Malatya, flower and leaf bud drop rates differed according to varieties and was found low in Malatya. During the flower bud and bloom period, Tokaloğlu, Precoce de Tyrinthe, and Iğdır varieties did not show anomalies in Malatya while Precoce de Tyrinthe had a low rate of abnormality in İzmir. Furthermore, it was …


The Effect Of Field Dodder (Cuscuta Campestris Yunck.) On The Leaf And Tuber Yield Of Sugar Beet (Beta Vulgaris L.), Tamer Üstüner Jan 2018

The Effect Of Field Dodder (Cuscuta Campestris Yunck.) On The Leaf And Tuber Yield Of Sugar Beet (Beta Vulgaris L.), Tamer Üstüner

Turkish Journal of Agriculture and Forestry

In this study, the effect of field dodder (Cuscuta campestris Yunck.) on the leaf and tuber yield of sugar beet fields in Kahramanmaraş Province of Turkey was investigated. Field dodder is known to spend its entire vegetation period as a parasite plant on its hosts after germinating from the soil. It causes significant yield and quality loss of many cultivated plants, including sugar beet. In this study, the influence of dodder on leaf chlorophyll a and b, total chlorophyll levels, leaf yield, wet and dry leaf weight, and leaf ash weight of sugar beet was investigated. For this purpose, two …


Banded Herbicide Application In A Conventional Sunflower Production System, Ahmet Tansel Seri̇m, Ünal Asav, Süleyman Gürdal Türkseven, Ergi̇n Dursun Jan 2018

Banded Herbicide Application In A Conventional Sunflower Production System, Ahmet Tansel Seri̇m, Ünal Asav, Süleyman Gürdal Türkseven, Ergi̇n Dursun

Turkish Journal of Agriculture and Forestry

Banded herbicide applications with hooded field sprayers (HFS) provide safer applications in many crops. The aim of this paper is to show the effectiveness and safeness of selective and nonselective herbicide applications in a conventional sunflower production system (CSPS) using a combined hooded field sprayer (CHFS). Glyphosate interrow and aclonifen or quizalofop-P-ethyl intrarow were applied in fields cropped with nonglyphosate-resistant sunflower varieties in Ankara, Tekirdağ, and Tokat Provinces of Turkey in 2015 and 2016. In Ankara and Tekirdağ, glyphosate caused limited injury to sunflower at 28 days after treatment (DAT), and aclonifen created transient phytotoxicity in 2015. Glyphosate was applied …


Employing An Analytic Hierarchy Process To Prioritize Factors Influencing Surfaceroughness Of Wood And Wood-Based Materials In The Sawing Process, Hi̇lal Si̇nger, Şükrü Özşahi̇n Jan 2018

Employing An Analytic Hierarchy Process To Prioritize Factors Influencing Surfaceroughness Of Wood And Wood-Based Materials In The Sawing Process, Hi̇lal Si̇nger, Şükrü Özşahi̇n

Turkish Journal of Agriculture and Forestry

This paper focuses on the prioritization of factors having substantial effects on the surface roughness of wood and wood-based materials in the sawing process. Within the model, four main factors were defined: cutting tool properties, machining parameters, wood structure and properties, and cutting phenomena. Furthermore, each main factor was subdivided into various subfactors. The analytic hierarchy process method was proposed to obtain the priorities of the factors. The results showed that feed speed, tooth shape and geometry, and cutting speed are the most important factors. Based on the obtained results, it can be said that the most important factors can …


Cover And Contents Jan 2018

Cover And Contents

Turkish Journal of Agriculture and Forestry

No abstract provided.


Genetic Diversity Among Melon (Cucumis Melo L.) Accessionsrevealed By Morphological Traits And Issr Markers, Niyazi Guliyev, Saida Sharifova, Javid Ojaghi, Mehraj Abbasov, Zeynal Akparov Jan 2018

Genetic Diversity Among Melon (Cucumis Melo L.) Accessionsrevealed By Morphological Traits And Issr Markers, Niyazi Guliyev, Saida Sharifova, Javid Ojaghi, Mehraj Abbasov, Zeynal Akparov

Turkish Journal of Agriculture and Forestry

The genetic relationships among 48 melon (Cucumis melo L.) genotypes collected from various parts of Azerbaijan were determined by comparing their phenotypic and molecular traits. Eleven agromorphological traits and 10 polymorphic inter-simple sequence repeat (ISSR) primers were used to define the genetic diversity. Principal component analysis grouped the agromorphological traits into the first four axes, describing 78% of the total variations. The highest genetic variation coefficient was found for yield per hectare (20.32%) and for fruit length (17.35%). Calculated heritability for yield was 0.96. The analysis of morphological traits grouped the accessions into four clusters. The 10 ISSR primers yielded …


Cereal Source And Microbial Consortia Of The Starter Culture Influence The Chemicalcomposition And Physicochemical Characteristics Of Boza, Mehli̇ka Borcakli, Tarik Öztürk, Erdem Yeşi̇lada Jan 2018

Cereal Source And Microbial Consortia Of The Starter Culture Influence The Chemicalcomposition And Physicochemical Characteristics Of Boza, Mehli̇ka Borcakli, Tarik Öztürk, Erdem Yeşi̇lada

Turkish Journal of Agriculture and Forestry

Boza is a popular cereal-based traditional beverage particularly consumed during winter months in Balkan countries and Turkic societies. The present study aims to investigate the influence of different cereal sources and starter cultures used in the commercial production of boza on its chemical and microbiota compositions and physicochemical characteristics. Detailed experimentation has revealed that chemical compositions, i.e. carbohydrates (beta-glucans, starches), organic acids, vitamins, dietary fibers, proteins, fat, and minerals, along with physicochemical characteristics, are subject to significant differentiation depending upon the cereal types and microbial consortia of the starter culture used in boza production. These variations also influence the physicochemical …


Effects Of Hot Water And Uv-C On Mineral Content Changes In Two Strawberry Cultivarsstored At Different Temperatures, Şeyda Çavuşoğlu Jan 2018

Effects Of Hot Water And Uv-C On Mineral Content Changes In Two Strawberry Cultivarsstored At Different Temperatures, Şeyda Çavuşoğlu

Turkish Journal of Agriculture and Forestry

In this study, two standard strawberry cultivars, Rubygem and Sabrina, were treated with UV-C (254 nm), hot water (60° C for 10 s), and UV-C + hot water after harvesting and stored in modified atmosphere packaging (MAP) at 0 °C and 5 °C. The variations in mineral contents including phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), copper (Cu), manganese (Mn), sodium (Na), and zinc (Zn) were analyzed during storage periods. Analysis of variance for storage temperature, storage time, cultivar, and treatments showed that storing both cultivars at different temperatures followed by all treatments caused some increases in P and …


Initial Impact Of Clear-Cut Logging On Dynamics Of Understory Vascular Plants Andpollinators In Scots Pine-Dominated Forests In Lithuania, Laima Cesoniene, Remigijus Daubaras, Paulius Kaskonas, Vilma Kaskoniene, Audrius Sigitas Maruska, Nicola Tiso, Marcin Zych Jan 2018

Initial Impact Of Clear-Cut Logging On Dynamics Of Understory Vascular Plants Andpollinators In Scots Pine-Dominated Forests In Lithuania, Laima Cesoniene, Remigijus Daubaras, Paulius Kaskonas, Vilma Kaskoniene, Audrius Sigitas Maruska, Nicola Tiso, Marcin Zych

Turkish Journal of Agriculture and Forestry

The development of understory plants and attendant changes of pollinators immediately after clear-cut logging were studied in boreal Scots pine forests. Experiments were carried out in Vacciniosa and Vaccinio-myrtillosa forest types. Considerable decline of the dwarf shrub layer confirmed the negative reaction of this dominated understory life form; however, the frequency dynamics of different vascular plants demonstrated species-specific response to changing environmental conditions. Because of rapid changes of light as well as damage of rhizomes by soil disturbances, the values of mean cover and frequency of the studied Ericaceae species decreased. We detected the most sensitive understory species to be …


Assessment Of Sesame Oil Fatty Acid And Sterol Composition With Ft-Nirspectroscopy And Chemometrics, İbrahi̇m Sani̇ Özdemi̇r, Öznur Karaoğlu, Çağdaş Dağ, Somer Beki̇roğlu Jan 2018

Assessment Of Sesame Oil Fatty Acid And Sterol Composition With Ft-Nirspectroscopy And Chemometrics, İbrahi̇m Sani̇ Özdemi̇r, Öznur Karaoğlu, Çağdaş Dağ, Somer Beki̇roğlu

Turkish Journal of Agriculture and Forestry

In this study the Fourier transform-near infrared (FT-NIR) spectroscopy technique was used to predict the fatty acid and sterol content of sesame. For this purpose, partial least square regression (PLS-R)-based prediction models were developed, which relate the FT-NIR spectra to reference GC measurements. In total, 39 sesame samples were collected from local producers around Muğla Province. Sesame oil was extracted from the seeds by using a screw press and extracted oil samples were analyzed without any refining. The results showed that among different fatty acids found in sesame oil, oleic and linoleic acid contents (which account for 85% of the …


Working With The Enemy? Social Work Education And Men Who Use Intimate Partner Violence, Rebecca Jury, Kathy Boxall Jan 2018

Working With The Enemy? Social Work Education And Men Who Use Intimate Partner Violence, Rebecca Jury, Kathy Boxall

Research outputs 2014 to 2021

This article examines service user involvement in social work education. It discusses the challenges and ethical considerations of involving populations who may previously have been excluded from user involvement initiatives, raising questions about the benefits and challenges of their involvement. The article then provides discussion of an approach to service user involvement in social work education with one of these populations, men who use violence in their intimate relationships, and concludes by considering the implications of their involvement for the social work academy.


Native Grass Cover Influences Forb Density In Cp-42 Pollinator Plantings, Alyssa Burgert, Laura Jackson Jan 2018

Native Grass Cover Influences Forb Density In Cp-42 Pollinator Plantings, Alyssa Burgert, Laura Jackson

Undergraduate Student Work

In recent years, pollinator populations have greatly declined due to a large decrease in habitat. In order to combat this decline, government programs have provided farmers with incentives to convert cropland to pollinator habitat.1 Farmers are required to plant at least 9 insect-pollinated species, with 3 species each blooming in early, middle and late summer. Any grasses must be native and comprise no more than 25% of the seed mix.2 Because of the high cost of forb seed and relatively low cost of grasses, we aimed to evaluate the effectiveness of this seed mix strategy. We predicted that …


The Intercultural Communication Of The Business World: A Review Of The Literature And Application To Colombian And English-Speaking Professionals, Anna Colleen Kelly Jan 2018

The Intercultural Communication Of The Business World: A Review Of The Literature And Application To Colombian And English-Speaking Professionals, Anna Colleen Kelly

Honors Program Theses

This paper studies major works that contribute to the knowledge of the formation of cultural values and how those values are influential in the context of business, especially when it comes to international management. As the world becomes more globalized, business organizations face new challenges as members encounter cross-cultural situations. Experts on international management and leading scholars on culture and business Alfons Trompenaars and Charles Hampden-Turner (2012) explained that the “internationalization of business life requires more knowledge of cultural patterns” (p.6). It is no longer sufficient for business people to ignore their own culture, and to understand and accept the …


Concert Recording 2018-04-22a, Blake Manternach, Schumann Robert, Claudia Burson Jan 2018

Concert Recording 2018-04-22a, Blake Manternach, Schumann Robert, Claudia Burson

Concert Recordings & Programs

[00:00]. Basta / Folke Rabe -- [05:25]. Concerto for trombone and orchestra. I. Moderato assai ma molto maestoso ; II. Quasi una Leggenda: Andante grave ; III. Finale: maestoso - rondo / Launy Grondahl -- [20:24]. Ballade / Eugene Bozza -- [28:46]. Variations. I. Theme ; II. Var. I ; III. Var. II ; IV. Var. III ; V. Var. IV / Leon Stekke -- [39:19]. Concerto for alto trombone. II. Allegro assai / Georg Christoph Wagenseil -- [44:39]. The days of wine and roses / Henry Mancini -- [49:43]. Lush life / Billy Strayhorn.


Exploration Of Counter Examples Of Balanced Sets, Jake Allen Weber Jan 2018

Exploration Of Counter Examples Of Balanced Sets, Jake Allen Weber

Honors Program Theses

Mathematicians are often intrigued with patterns, many times finding themselves looking for pieces of structure within a data set. This research project is no different in that we have explored our vast data set for substructure.

Our goal is to identify the following: how many data points are necessary to guarantee our set has a balanced set/substructure? Naturally rephrasing the previous question, we also ask ourselves what is the largest set that does not have a balanced subset/substructure? This alternate phrasing set us down our current path. We focused on the largest sets with no balanced substructure and what they …


Miniaturized Switchless Pattern Reconfigurable Antenna Utilizing Spherical Modes Analysis, Adam Narbudowicz, Max Ammann, Nicola Marchetti Jan 2018

Miniaturized Switchless Pattern Reconfigurable Antenna Utilizing Spherical Modes Analysis, Adam Narbudowicz, Max Ammann, Nicola Marchetti

Conference Papers

The paper proposes an electrically small pattern reconfigurable antenna, which allows flexible beamforming with the antenna diameter being ?/5. The antenna has 3 ports, each designed to radiate a different spherical mode. By applying appropriate phase shift the antenna allows to flexibly sweep its bi-directional radiation pattern across a 360° azimuth, while offering 5 dBi directivity.


Fundamental Efficiency Limit Of Passive Non-Magnetic Self-Interference Suppression In Full-Duplex Radios, Adam Narbudowicz, Giuseppe Ruvio, Max Ammann, Nicola Marchetti Jan 2018

Fundamental Efficiency Limit Of Passive Non-Magnetic Self-Interference Suppression In Full-Duplex Radios, Adam Narbudowicz, Giuseppe Ruvio, Max Ammann, Nicola Marchetti

Conference Papers

Passive non-magnetic self-interference suppression circuits are currently used as first stages of complex full-duplex radio systems that allow simultaneous reception and transmission within the same channel. This paper introduces the upper efficiency limit for such circuitry. It is demonstrated that for these devices it is not feasible to have simultaneously high efficiency, good transmitter-to-receiver isolation and same propagation channel for transmission and reception. More specifically, the maximum efficiency for most typical case cannot exceed 50% if good isolation is obtained.


Comparative Analysis Of Mabc With Knn, Som, And Aco Algorithms For Ecg Heartbeat Classification, Seli̇m Di̇lmaç, Zümray Ölmez, Tamer Ölmez Jan 2018

Comparative Analysis Of Mabc With Knn, Som, And Aco Algorithms For Ecg Heartbeat Classification, Seli̇m Di̇lmaç, Zümray Ölmez, Tamer Ölmez

Turkish Journal of Electrical Engineering and Computer Sciences

In this paper, we proposed a classification method based on a nature-inspired algorithm, i.e., modified artificial bee colony (MABC). This method was applied to electrocardiogram (ECG) heartbeat classification. ECG data was obtained from MITBIH database. Eight different types of heartbeats (N, j, V, F, f, A, a, and R) were analyzed. For a better classification result, both time domain and frequency domain features were used. Feature selection was done by divergence analysis. MABC classification accuracy and heartbeat sensitivity values were compared with the results of other methods. Among other classifiers, k-nearest neighbor (KNN), Kohonen's self-organizing map (SOM), and ant colony …


An Algorithm For Image Restoration With Mixed Noise Using Total Variation Regularization, Cong Thang Pham, Guilhem Gamard, Andrei Kopylov, Thi Thu Thao Tran Jan 2018

An Algorithm For Image Restoration With Mixed Noise Using Total Variation Regularization, Cong Thang Pham, Guilhem Gamard, Andrei Kopylov, Thi Thu Thao Tran

Turkish Journal of Electrical Engineering and Computer Sciences

We present here an effective scheme for image denoising based on total variation regularization. The proposed scheme allows to efficiently remove Poisson noise as well as Gaussian noise simultaneously with the help of a new kind of data fidelity term, suitable for the mixed Poisson - Gaussian noise model. The results show that the algorithm corresponding to our new scheme outperforms the existing methods for mixed Poisson - Gaussian noise removal.


An Adaptive Machine Learning-Based Qoe Approach In Sdn Context For Video-Streaming Services, Asma Ben Letaifa Jan 2018

An Adaptive Machine Learning-Based Qoe Approach In Sdn Context For Video-Streaming Services, Asma Ben Letaifa

Turkish Journal of Electrical Engineering and Computer Sciences

In data service applications over the Internet, user perception and satisfaction can be assessed by quality of experience (QoE) metrics. QoE depends both on the users' perception and the used service, which together form end-to-end metrics. While network optimization has traditionally focused on optimizing network properties such as QoS, we focus in this work on optimizing end-to-end QoE metrics with the aim to deliver to the client a good QoE that can be monitored in real time. We argue that end-user QoE is a relevant measurement for network operators and service providers. In this paper, we present a machine learning …


Reconstruction Of Geometrical And Reflection Properties Of Surfaces By Using Structured Light Imaging Technique, Şükrü Ozan, Şevket Gümüşteki̇n Jan 2018

Reconstruction Of Geometrical And Reflection Properties Of Surfaces By Using Structured Light Imaging Technique, Şükrü Ozan, Şevket Gümüşteki̇n

Turkish Journal of Electrical Engineering and Computer Sciences

When a robust and dense surface reconstruction is aimed, structured light imaging techniques are usually much appreciated. In this paper we propose a method to reconstruct both geometrical and reflective properties of surfaces by using structured light imaging. We use a technique where a camera and a projector are both treated as viewing devices. They are calibrated in the same manner. Each visible point can be correctly located on both image planes without solving a correspondence problem; hence, a dense reconstruction can be obtained. Since both the camera and the projector are explicitly calibrated, lighting and viewing directions can be …


Feature Extraction Using Sequential Cumulative Bin And Overlap Mean Intensity Foriris Classification, Ahmad Nazri Ali, Shahrel Azmin Suandi, Mohd Zaid Abdullah Jan 2018

Feature Extraction Using Sequential Cumulative Bin And Overlap Mean Intensity Foriris Classification, Ahmad Nazri Ali, Shahrel Azmin Suandi, Mohd Zaid Abdullah

Turkish Journal of Electrical Engineering and Computer Sciences

This paper examines an approach generalizing a variant of the local binary pattern (LBP) method for iris feature extraction. The proposed method employs two different LBP variants called the sequential cumulative bin and overlap mean intensity for projecting the one-dimensional local iris textures into a binary bit pattern. The assigned bit, either 1 or 0 as a bit code, replaces the original intensity value using a specific condition for the respective reference element. The ratio value from the total transition of 1 to 0 along the row axis represents the feature of each iris image. The extraction only utilizes a …