Ismail Keskin - Academia.edu (original) (raw)

Papers by Ismail Keskin

Research paper thumbnail of Application of the Support Vector Machine to Predict Subclinical Mastitis in Dairy Cattle

The Scientific World Journal, 2013

This study presented a potentially useful alternative approach to ascertain the presence of subcl... more This study presented a potentially useful alternative approach to ascertain the presence of subclinical and clinical mastitis in dairy cows using support vector machine (SVM) techniques. The proposed method detected mastitis in a cross-sectional representative sample of Holstein dairy cattle milked using an automatic milking system. The study used such suspected indicators of mastitis as lactation rank, milk yield, electrical conductivity, average milking duration, and control season as input data. The output variable was somatic cell counts obtained from milk samples collected monthly throughout the 15 months of the control period. Cattle were judged to be healthy or infected based on those somatic cell counts. This study undertook a detailed scrutiny of the SVM methodology, constructing and examining a model which showed 89% sensitivity, 92% specificity, and 50% error in mastitis detection.

Research paper thumbnail of Examining digital competence of teachers within the context of lifelong learning based on of the twenty-first century skills<p>Öğretmenlerin yirmi birinci yüzyıl becerileri ışığında ve yaşam boyu öğrenme bağlamında dijital yeterliliklerinin incelenmesi

International Journal of Human Sciences, 2015

&amp;amp;amp;amp;amp;amp;amp;amp;lt;p&amp;amp;amp;amp;amp;amp;amp;amp;gt;Undoubtedly, the... more &amp;amp;amp;amp;amp;amp;amp;amp;lt;p&amp;amp;amp;amp;amp;amp;amp;amp;gt;Undoubtedly, the twenty-first century has witnessed rapid changes and developments in the information world. As science and technology develop, sharing information and knowledge has been accelerated. Digital tools are of paramount importance and play an important role in the production and sharing of this information. The world has become a global village by means of digital tools. Digital skills are also an important sub-dimension of lifelong learning. Within this context, our teachers to educate the people of our age are required to acquire and use these skills throughout their lives in order to catch our era in which the information production and sharing are accelerated. The aim of this study is to assess digital competence of teachers within the context of lifelong learning and in the light of the twenty-first century skills. Scope of this study includes teachers in service at high school and junior high school in Diyarbakır, during the spring semester of 2014-2015 academic years. The sample of the study consisted of 286 teachers randomly selected from the population. One of the descriptive research models, survey model has been used in this study. As data collection tool, a scale developed by researchers was used. Developed scale consists of 30 items and three-dimensional. SPSS software was used for analysing the data. In data analysis, digital qualifications of teachers was both examined overall and compared in terms of gender, level of education, branch, school type, institutions, seniority and whether to take computer lessons or courses variables. According to the results obtained, it was observed that teachers have digital qualifications at ‘Adequate level ( =3,5)’, male teachers are more qualified than female teachers and having studied computing either in university or another institution significantly increases digital qualifications. The results obtained were compared with similar studies in literature and the following suggestions were developed: 1- Teachers, especially senior teachers, should participate in in-service training in line with the teacher’s profile required by the 21st century. 2- Universities should renew their programs according to the needs of the era and should teach especially prospective teachers &amp;amp;amp;amp;amp;amp;amp;amp;quot;learning to learn.&amp;amp;amp;amp;amp;amp;amp;amp;quot; 3- In this field, more detailed, more versatile studies on larger samples should be carried out and the findings should be presented to the attention of policy-makers in particular.&amp;amp;amp;amp;amp;amp;amp;amp;lt;/p&amp;amp;amp;amp;amp;amp;amp;amp;gt;&amp;amp;amp;amp;amp;amp;amp;amp;lt;p&amp;amp;amp;amp;amp;amp;amp;amp;gt; &amp;amp;amp;amp;amp;amp;amp;amp;lt;/p&amp;amp;amp;amp;amp;amp;amp;amp;gt;&amp;amp;amp;amp;amp;amp;amp;amp;lt;p&amp;amp;amp;amp;amp;amp;amp;amp;gt;&amp;amp;amp;amp;amp;amp;amp;amp;lt;strong&amp;amp;amp;amp;amp;amp;amp;amp;gt;Özet&amp;amp;amp;amp;amp;amp;amp;amp;lt;/strong&amp;amp;amp;amp;amp;amp;amp;amp;gt;&amp;amp;amp;amp;amp;amp;amp;amp;lt;/p&amp;amp;amp;amp;amp;amp;amp;amp;gt;&amp;amp;amp;amp;amp;amp;amp;amp;lt;p&amp;amp;amp;amp;amp;amp;amp;amp;gt;Yirmi birinci yüzyıl hiç kuşkusuz bilgi dünyasında hızlı değişme ve gelişmelere sahne olmaktadır. Bilim ve teknolojinin gelişmesi ile bilgi üretimi ve bilginin paylaşımı hızlanmıştır. Bu bilgi üretimi ve paylaşımında dijital araçlar önemli bir yer tutmaktadır. Dijital araçlar vasıtasıyla dünya küresel bir köy halini almıştır. Yirmi birinci yüzyıl becerileri arasında dijital beceriler önemli bir yer tutmaktadır. Dijital beceriler aynı zamanda hayat boyu öğrenmenin de önemli bir alt boyutudur. Bu bağlamda bilgi üretiminin ve paylaşımın hızlandığı çağımızı yakalamak için çağımızın insanını yetiştirecek öğretmenlerimizin bu becerileri edinmeleri ve hayat boyunca kullanmaları gerekmektedir. Bu çalışmanın amacı öğretmenlerin yirmi birinci yüzyıl becerileri ışığında ve hayat boyu öğrenme bağlamında dijital yeterliliklerinin incelenmesidir. Çalışmada betimsel araştırma modellerinden tarama modeli kullanılmıştır. Araştırmanın evrenini 2015-2015 eğitim öğretim yılı bahar döneminde Diyarbakır ili merkez ilçelerinde görev yapan ortaokul ve lise öğretmenleri oluşturmaktadır. Araştırmanın örneklemini ise bu evrenden rastgele seçilen 286 öğretmen oluşturmaktadır. Araştırmada ölçme aracı olarak araştırmacılara tarafından geliştirilen 30 maddeden oluşan bir ölçek kullanılmıştır. Verilerin çözümlenmesinde SPSS Statistic 22 programı kullanılmıştır. Verilerin analizinde öğretmenlerin dijital yeterlilikleri hem genel olarak hem de cinsiyet , eğitim durumu, branş, okul türü, mezuniyet, bilgisayar dersi/kursu alma ve kıdem değişkenlerine göre incelenmiştir. Elde edilen sonuçlara göre öğretmenlerin ölçek ortalamasından 3,5 ortalama elde ederek dijital yeterliliklerinin yeterli düzeyde oldukları, cinsiyet bakımından erkek öğretmenlerin kadın öğretmenlere göre daha…

Research paper thumbnail of Süt Siğirlarinda Laktasyon Eğri̇leri̇ni̇n Farkli Matemati̇k Modellerle Beli̇rlenmesi̇ Ve Kontrol Araliğinin Tespi̇ti̇

Selcuk Tarım Ve Gıda Bilimleri Dergisi a, Jul 5, 2004

Bu çalışmada, farklı matematik modeller kullanılarak İsviçre Esmeri sığırların laktasyon eğrileri... more Bu çalışmada, farklı matematik modeller kullanılarak İsviçre Esmeri sığırların laktasyon eğrilerini en iyi belirleyen modellerin tespiti amaçlanmıştır. Çalışmada sekiz matematik model incelenmiştir. Bu modeller aşağıdaki gibidir.

Research paper thumbnail of Fitting of Different Mathematic Models to the Growth Curves of Female Malya Lambs Weaned at Two Different Live Weights

Trends in Animal and Veterinary Sciences, Nov 11, 2010

... İbrahim AYTEKİN1*, Uğur ZÜLKADİR1, İsmail KESKİN1 , Saim BOZTEPE1 1Department of Animal Scien... more ... İbrahim AYTEKİN1*, Uğur ZÜLKADİR1, İsmail KESKİN1 , Saim BOZTEPE1 1Department of Animal Science, Faculty of Agriculture, Selçuk University, 42075, Konya, Turkey ... Anim Prod 40 (3): 441-453. Mukundan G, Khan BU, Bhat PB, 1982. ...

Research paper thumbnail of Comparison of Eleven Mathematical Models for describing the firstLactation Curve of Holstein Cattle in Turkey

... It was notified that this model was followed by the models reported out by Sika (1950), Nelde... more ... It was notified that this model was followed by the models reported out by Sika (1950), Nelder, (1966), Wood (1967), Dave (1971) and Jenkins and Ferrel (1984) (Landete-Castillejos and Gallego, 2000). ... (2) Quadratic (Q), (Dave, 1971): 2 )t( ct bta Y ++= (3) Cubic (C), Page 3. 248 ...

Research paper thumbnail of Relationship between Persistency Values Defined with Various Methods and Some Lactation Traits of Brown Swiss Cattle in Turkey

Http Dx Doi Org 10 1080 09712119 2008 9706958, Nov 14, 2011

ABSTRACT Zülkadir, U., Aytekin, I. and Keskin, 1. 2008. Relationship between persistency values d... more ABSTRACT Zülkadir, U., Aytekin, I. and Keskin, 1. 2008. Relationship between persistency values defined with various methods and some lactation traits of Brown Swiss cattle in Turkey. J. App. Arum. Res., 34: 137–141.

Research paper thumbnail of Çumra Zi̇raat Meslek Li̇sesi̇nde (Konya) Yeti̇şti̇ri̇len Esmer İnekleri̇n Süt Veri̇m Özelli̇kleri̇ Ve Bu Özelli̇klere Ai̇t Tekrarlanma Dereceleri̇çumra Zi̇raat Meslek Li̇sesi̇nde (Konya) Yeti̇şti̇ri̇len Esmer İnekleri̇n Süt Veri̇m Özelli̇kleri̇ Ve Bu Özelli̇klere Ai̇t Tekrarlanma

Selcuk Tarım Ve Gıda Bilimleri Dergisi a, Jan 11, 2003

Bu arastirmada, Çumra Ziraat Meslek Lisesinde yetistirilen Esmer ineklerin süt verim özellikleri ... more Bu arastirmada, Çumra Ziraat Meslek Lisesinde yetistirilen Esmer ineklerin süt verim özellikleri bakimindan performanslari ile bu özelliklere ait tekrarlanma dereceleri belirlenmistir. Incelenen özelliklere ait en küçük kareler ortalamalari Laktasyon Süresi (LS), Laktasyon Süt Verimi (LSV), Günlük Ortalama Süt Verimi (GOSV) ve Günlük Maksimum Süt Verimi (GMSV) için sirasiyla 266. 33±4.740 gün, 2578.71±43.230 kg, 9.59±0.469 kg ve 15.19±0.217 kg olarak bulunmustur. Ayni özelliklere ait tekrarlanma dereceleri ise sirasiyla 0.275±0.0860, 0.255±0.0870, 0.234±0.0870 ve 0.172±0.0880 olarak hesaplanmistir. Arastirmada yilin LSV (p<0.01), LS, GOSV ve GMSV'ye (p<0.05) etkisi istatistik olarak önemli bulunmustur. Laktasyon sirasinin LS (p<0.05), LSV, GOSV ve GMSV'ye (p<0.01) etkisi ve buzagilama mevsiminin incelenen özelliklerin tamami üzerine etkisi (p<0.01) istatistik olarak önemlidir. determined as 266.33±4.740 days, 2578.71±43.230 kg, 9.59±0.469 kg and 15.19±0.217 kg respectively. Repeatabilities of LP, LMY, ADMY and MDMY were found as 0.275±0.0860, 0.255±0.0870, 0.234±0.0870 and 0.172±0.0880 respectively. The year had a significant effect on LMY (p<0.01), LP, ADMY and MDMY (p<0.05). Effect of Lactation Number on LP (p<0.05), LMY, ADMY and MDMY (p<0.01) and effect of calving season on all traits (p<0.01) were found to be statistically significant.

Research paper thumbnail of Süt Sığırlarında Bulanık Mantık Yöntemi ile Örnek Ayıklama Modelinin Oluşturulması

Research paper thumbnail of Some Phenotypic Parameters for Earlyslaughtered Akkaraman Lambs

Research paper thumbnail of Mycorrhizal Colonisations of Naturally Evolving Weeds at Different Mine Waste Mounds in Central Anatolia –Turkey

Soil and water pollution including heavy metals increased because of the industrialization. Weeds... more Soil and water pollution including heavy metals increased because of the industrialization. Weeds heavy metal uptake and accumulation depend on the density of available metals in waste soils. Arbuscular Mycorrhizal (AM) increases productivity and tolerance of weeds, as well as their resistance to different abio-and biotic stresses. The role of AM in metal uptake remains largely unclear. AM may be beneficial for the metal streesed weeds and several AM fungal strains can be isolated from metal-enriched soils. In this study AM inoculations on weed populations existing in pastures adjacent to a different waste mounds (mercury, lead, arsenic and cadmium) stocked on open field were surveyed in Central Anatolia. 35 weed species belonging to 16 families were collected from the pastures constituted 60% of total land. AM colonization was recorded in 28 species accounting for 90% of which 35 weeds about 60% covered land. Hyphal, arbuscul and vesicul infection was noticed on the weeds. Weeds ha...

Research paper thumbnail of BAZI BAKLA (Vicia faba L.) GENOTİPLERİNDE TANE VERİMİ VE VERİME ETKİ EDEN ÖZELLİKLER ARASINDAKİ İLİŞKİLERİN BELİRLENMESİ

ANADOLU JOURNAL OF …, 2011

... kısmi regresyon katsayısı şeklinde tanımlanan path katsayısı analizini kullanmaktadır (Ghoss ... more ... kısmi regresyon katsayısı şeklinde tanımlanan path katsayısı analizini kullanmaktadır (Ghoss ve Chatterjee, 1988; Shabana ve ark., 1990; Board ve ark., 1997). Verime etki eden karakterlerin belirlenmesi ve bu karakterlerin ...

Research paper thumbnail of Comparison of Six Different Mathematical Models to the Lactation Curve of Simmental Cows Reared in Kazova State Farm

The aim of this study was to investigate the fitness of Incomplete Gamma (WD), Quadratic (Q), Cub... more The aim of this study was to investigate the fitness of Incomplete Gamma (WD), Quadratic (Q), Cubic (C), Exponential (WIL), Mixed Log (ML) and Polynomial Regression (AS) models to the lactation curve of Simmental Cows. Data were collected from 752 Simmental cows raised on the Kazova state farm in Turkey. Milk yield was recorded monthly. Total milk yields estimated by the 6 models were very close to real total milk yield. The 6 models were found to be adequate for estimation of milk yield. ML model underestimated the peak yield significantly. The differences between peak yields of the models and real peak yield were statistically insignificant (p>0.05) and they were ranged from 13.19-18.59 l. Cubic models forecasted peak time earlier than real peak time. The differences between the persistency values of the 6 models were insignificant (p>0.05). The 6 model`s persistency value was nearly equal to real persistency value. R2 values of the 6 models changed from 92.69-95.14%. The hi...

Research paper thumbnail of Estimation of 305 Days Milk Yield Using Partial Milk Yield in Holstein Cattle

In this study, estimation of 305 days milk yield of Holstein cows raised in a Private enterprise ... more In this study, estimation of 305 days milk yield of Holstein cows raised in a Private enterprise of Karapınar district of Konya Province using their partial lactation records was aimed. A total of 105 first lactation records were used as the research of the study. 305 day milk yield was found to be 5997 ± 107.95 liters. Estimated milk yields by Holland methods and partial lactation records (30, 61, 91, 122, 152, 183, 213, 244 and 274) day were changed between 5788 ± 92.42 and 6198 ± 118.38, the difference between them was statistically insignificant (P>0.05). Average lactation length and actual milk yield were 312 ± 4.37 and 6369 ± 149, respectively. By the way, there were statistically significant and higher correlation coefficients among actual 305 days milk yield, estimated milk yields by Holland methods and milk yields estimated by partial lactation records as 0.681-0.984 and 0.701-0.979, respectively (P<0.01).At the end of the study, it was stated that the 305 days milk y...

Research paper thumbnail of Analysis of Covariance on The Randomized Plot Factorial Experiment Design

This study is conducted in order to determine the effectiveness of the analysis of variance and c... more This study is conducted in order to determine the effectiveness of the analysis of variance and covariance on the randomized plot factorial experiment design for this purpose, comparative analysis of covariance analysis of variance tries to explain, while the created artificial data set applying to randomized plot factorial experiment design respectively. Analysis of covariance is an analysis which consists of analysis of variance and regression technique used together. Although the application of this technique consists of different experiment design analysis of covariance can be applied to all experimental design. This analysis used by dividing non-homogeneous materials to sub-blocks or a co-variable (concomitant variable-covariates) to obtain more reliable results and experimental design to increase sensitivity of experimental design. In this study, in all experimental design covariates error variance ratio was determined that lower values compared to analysis of variance. The de...

Research paper thumbnail of Investigation of Relationship Between Some Initial Fattening Body Measurements and Cold Carcass Weight in Akkaraman Lambs by Using Path Analysis

ABSTRACT In this research, 14 Akkaraman lambs were fattened after weaning at the 2.5 month age an... more ABSTRACT In this research, 14 Akkaraman lambs were fattened after weaning at the 2.5 month age and then slaughtered. Fattening period constituted three months. Direct and indirect relationships between body measurements (live weight (X 1), wither heights (X 2), hearth girth (X 3), chest depth (X 4), leg girth (X 5) and body length (X 6)) taken at the beginning of fattening period and cold carcass weight (Y) in Akkaraman lambs were determined by path analysis. The path coefficients related to direct effects of each variables on estimated variable were determined as-0.1913 for X 1 , 0.6035 for X 2 , 0.7921 for X 3 , 0.1792 for X 4 , 0.3694 for X 5 ,-0.8731 for X 6 respectively. The determination coefficient (R 2) was found as 80.6. It has been determined that the factors which have the highest effects on the cold carcass weight are the heart girth, body weight and wither heights. According to these results, it was stated that hearth girth, body length and wither heights could be used ...

Research paper thumbnail of Lactation Curve Traits of Holstein Cows Raised at Polatlı State Farm

Kafkas Üniversitesi Veteriner Fakültesi Dergisi

Research paper thumbnail of Comparison Of The Linear And Quadratic Models For Describing The Growth of Live Weight and Body Easurements In Anatolian Merino Male Lambs In Fattening Period

The linear and quadratic models were used to estimate growth of live weight and body measurements... more The linear and quadratic models were used to estimate growth of live weight and body measurements in Anatolian Merino male lambs from weaning (75 days) to 145 days of age. Lambs were fed for a 63 days feeding period after a week of adaptation period. The feed contained 2775 kcal/kg metabolic energy and 15 % crude protein. Both of the models showed good fit to the live weight and leg girth data (R2=0.990 and 0.984). The quadratic model gave a better fit to withers height, rump height; chest girth, chest depth and body length data and allowed a suitable description of growth curve by its higher R2 and lower MSE values (P<0.01).

Research paper thumbnail of Hayvancılıkta Bulanık Mantık Uygulamaları

FUZZY LOGIC APPLICATIONS IN ANIMAL BREEDING ABSTRACT In statistics and probability theory we are ... more FUZZY LOGIC APPLICATIONS IN ANIMAL BREEDING ABSTRACT In statistics and probability theory we are working with certainty but our lives full of the uncertainties. Therefore, the human have to work with uncertainties to improve own resulting ability. Fuzzy logic uses approximation instead of exact information, imitating the human thinking. The basic difference between classical logic and fuzzy logic is, classical logic allows mathematics to use only extreme values. Therefore, modeling and controlling of complicated systems with classical mathematical methods is difficult, due to the complete inputs. The fuzzy set theory is based on an extension of the classical meaning of the term 'set' and formulates specific logical and arithmetical operations for processing imprecise and uncertain information. In this study, it was tried to explain the basic of the fuzzy logic due to the recently implementation of fuzzy logic in animal science, then was presented some samples of studies made...

Research paper thumbnail of Determination of the Relationship between initial fattening body measurements and Slaughter, Hot and Cold Carcass Weights in Akkaraman Lambs by Using Regression Analysis

This study was carried out to investigate the relationship between initial fattening live weight ... more This study was carried out to investigate the relationship between initial fattening live weight and body measurements and slaughter, hot and cold carcass weights of Akkaraman lambs by using regression analysis. Data were collected from 14 Akkaraman lambs fattened at the state of the Prof. Dr. Orhan Düzgüneş Research and Application Farm of Department of Animal Science, Agricultural Faculty, Selcuk University. Body measurements were taken one by one, firstly. After then, the height measurements (X2+X3=X7), depth measurement (X5), circumference measurements (X4+X6=X8), height-circumference measurements (X2+X3+X4+X6=X9), heightdepth measurements (X2+X3+X5=X10), circumference-depth measurements (X4+X5+X6=X11) all body measurements (X1+X2+X3+X4+X5+X6=X12) were taken for regression analysis by using among themselves. The highest correlation were found between slaughter weight and initial fattening rump height (X3) as 0.699, the correlation between hot carcass weight and initial fattening...

Research paper thumbnail of Application of different models to the lactation curves of unimproved Awassi ewes in Turkey

South African Journal of Animal Science, 2006

... Livest. Prod. Sci. 44, 37-44. Chang, YM, Rekaya, R. Gionala, D. &amp; Thomas, DL, 2001. .... more ... Livest. Prod. Sci. 44, 37-44. Chang, YM, Rekaya, R. Gionala, D. &amp; Thomas, DL, 2001. ... J. Dairy Sci. 60, 2340-2354. Franci, O., Pugliese, C., Acciaioli, A., Parisi, G. &amp; Lucifero, M., 1999. Application of two models to lactation curves of Masese ewes. Small Rumin. Res. 31, 91-96. ...

Research paper thumbnail of Application of the Support Vector Machine to Predict Subclinical Mastitis in Dairy Cattle

The Scientific World Journal, 2013

This study presented a potentially useful alternative approach to ascertain the presence of subcl... more This study presented a potentially useful alternative approach to ascertain the presence of subclinical and clinical mastitis in dairy cows using support vector machine (SVM) techniques. The proposed method detected mastitis in a cross-sectional representative sample of Holstein dairy cattle milked using an automatic milking system. The study used such suspected indicators of mastitis as lactation rank, milk yield, electrical conductivity, average milking duration, and control season as input data. The output variable was somatic cell counts obtained from milk samples collected monthly throughout the 15 months of the control period. Cattle were judged to be healthy or infected based on those somatic cell counts. This study undertook a detailed scrutiny of the SVM methodology, constructing and examining a model which showed 89% sensitivity, 92% specificity, and 50% error in mastitis detection.

Research paper thumbnail of Examining digital competence of teachers within the context of lifelong learning based on of the twenty-first century skills<p>Öğretmenlerin yirmi birinci yüzyıl becerileri ışığında ve yaşam boyu öğrenme bağlamında dijital yeterliliklerinin incelenmesi

International Journal of Human Sciences, 2015

&amp;amp;amp;amp;amp;amp;amp;amp;lt;p&amp;amp;amp;amp;amp;amp;amp;amp;gt;Undoubtedly, the... more &amp;amp;amp;amp;amp;amp;amp;amp;lt;p&amp;amp;amp;amp;amp;amp;amp;amp;gt;Undoubtedly, the twenty-first century has witnessed rapid changes and developments in the information world. As science and technology develop, sharing information and knowledge has been accelerated. Digital tools are of paramount importance and play an important role in the production and sharing of this information. The world has become a global village by means of digital tools. Digital skills are also an important sub-dimension of lifelong learning. Within this context, our teachers to educate the people of our age are required to acquire and use these skills throughout their lives in order to catch our era in which the information production and sharing are accelerated. The aim of this study is to assess digital competence of teachers within the context of lifelong learning and in the light of the twenty-first century skills. Scope of this study includes teachers in service at high school and junior high school in Diyarbakır, during the spring semester of 2014-2015 academic years. The sample of the study consisted of 286 teachers randomly selected from the population. One of the descriptive research models, survey model has been used in this study. As data collection tool, a scale developed by researchers was used. Developed scale consists of 30 items and three-dimensional. SPSS software was used for analysing the data. In data analysis, digital qualifications of teachers was both examined overall and compared in terms of gender, level of education, branch, school type, institutions, seniority and whether to take computer lessons or courses variables. According to the results obtained, it was observed that teachers have digital qualifications at ‘Adequate level ( =3,5)’, male teachers are more qualified than female teachers and having studied computing either in university or another institution significantly increases digital qualifications. The results obtained were compared with similar studies in literature and the following suggestions were developed: 1- Teachers, especially senior teachers, should participate in in-service training in line with the teacher’s profile required by the 21st century. 2- Universities should renew their programs according to the needs of the era and should teach especially prospective teachers &amp;amp;amp;amp;amp;amp;amp;amp;quot;learning to learn.&amp;amp;amp;amp;amp;amp;amp;amp;quot; 3- In this field, more detailed, more versatile studies on larger samples should be carried out and the findings should be presented to the attention of policy-makers in particular.&amp;amp;amp;amp;amp;amp;amp;amp;lt;/p&amp;amp;amp;amp;amp;amp;amp;amp;gt;&amp;amp;amp;amp;amp;amp;amp;amp;lt;p&amp;amp;amp;amp;amp;amp;amp;amp;gt; &amp;amp;amp;amp;amp;amp;amp;amp;lt;/p&amp;amp;amp;amp;amp;amp;amp;amp;gt;&amp;amp;amp;amp;amp;amp;amp;amp;lt;p&amp;amp;amp;amp;amp;amp;amp;amp;gt;&amp;amp;amp;amp;amp;amp;amp;amp;lt;strong&amp;amp;amp;amp;amp;amp;amp;amp;gt;Özet&amp;amp;amp;amp;amp;amp;amp;amp;lt;/strong&amp;amp;amp;amp;amp;amp;amp;amp;gt;&amp;amp;amp;amp;amp;amp;amp;amp;lt;/p&amp;amp;amp;amp;amp;amp;amp;amp;gt;&amp;amp;amp;amp;amp;amp;amp;amp;lt;p&amp;amp;amp;amp;amp;amp;amp;amp;gt;Yirmi birinci yüzyıl hiç kuşkusuz bilgi dünyasında hızlı değişme ve gelişmelere sahne olmaktadır. Bilim ve teknolojinin gelişmesi ile bilgi üretimi ve bilginin paylaşımı hızlanmıştır. Bu bilgi üretimi ve paylaşımında dijital araçlar önemli bir yer tutmaktadır. Dijital araçlar vasıtasıyla dünya küresel bir köy halini almıştır. Yirmi birinci yüzyıl becerileri arasında dijital beceriler önemli bir yer tutmaktadır. Dijital beceriler aynı zamanda hayat boyu öğrenmenin de önemli bir alt boyutudur. Bu bağlamda bilgi üretiminin ve paylaşımın hızlandığı çağımızı yakalamak için çağımızın insanını yetiştirecek öğretmenlerimizin bu becerileri edinmeleri ve hayat boyunca kullanmaları gerekmektedir. Bu çalışmanın amacı öğretmenlerin yirmi birinci yüzyıl becerileri ışığında ve hayat boyu öğrenme bağlamında dijital yeterliliklerinin incelenmesidir. Çalışmada betimsel araştırma modellerinden tarama modeli kullanılmıştır. Araştırmanın evrenini 2015-2015 eğitim öğretim yılı bahar döneminde Diyarbakır ili merkez ilçelerinde görev yapan ortaokul ve lise öğretmenleri oluşturmaktadır. Araştırmanın örneklemini ise bu evrenden rastgele seçilen 286 öğretmen oluşturmaktadır. Araştırmada ölçme aracı olarak araştırmacılara tarafından geliştirilen 30 maddeden oluşan bir ölçek kullanılmıştır. Verilerin çözümlenmesinde SPSS Statistic 22 programı kullanılmıştır. Verilerin analizinde öğretmenlerin dijital yeterlilikleri hem genel olarak hem de cinsiyet , eğitim durumu, branş, okul türü, mezuniyet, bilgisayar dersi/kursu alma ve kıdem değişkenlerine göre incelenmiştir. Elde edilen sonuçlara göre öğretmenlerin ölçek ortalamasından 3,5 ortalama elde ederek dijital yeterliliklerinin yeterli düzeyde oldukları, cinsiyet bakımından erkek öğretmenlerin kadın öğretmenlere göre daha…

Research paper thumbnail of Süt Siğirlarinda Laktasyon Eğri̇leri̇ni̇n Farkli Matemati̇k Modellerle Beli̇rlenmesi̇ Ve Kontrol Araliğinin Tespi̇ti̇

Selcuk Tarım Ve Gıda Bilimleri Dergisi a, Jul 5, 2004

Bu çalışmada, farklı matematik modeller kullanılarak İsviçre Esmeri sığırların laktasyon eğrileri... more Bu çalışmada, farklı matematik modeller kullanılarak İsviçre Esmeri sığırların laktasyon eğrilerini en iyi belirleyen modellerin tespiti amaçlanmıştır. Çalışmada sekiz matematik model incelenmiştir. Bu modeller aşağıdaki gibidir.

Research paper thumbnail of Fitting of Different Mathematic Models to the Growth Curves of Female Malya Lambs Weaned at Two Different Live Weights

Trends in Animal and Veterinary Sciences, Nov 11, 2010

... İbrahim AYTEKİN1*, Uğur ZÜLKADİR1, İsmail KESKİN1 , Saim BOZTEPE1 1Department of Animal Scien... more ... İbrahim AYTEKİN1*, Uğur ZÜLKADİR1, İsmail KESKİN1 , Saim BOZTEPE1 1Department of Animal Science, Faculty of Agriculture, Selçuk University, 42075, Konya, Turkey ... Anim Prod 40 (3): 441-453. Mukundan G, Khan BU, Bhat PB, 1982. ...

Research paper thumbnail of Comparison of Eleven Mathematical Models for describing the firstLactation Curve of Holstein Cattle in Turkey

... It was notified that this model was followed by the models reported out by Sika (1950), Nelde... more ... It was notified that this model was followed by the models reported out by Sika (1950), Nelder, (1966), Wood (1967), Dave (1971) and Jenkins and Ferrel (1984) (Landete-Castillejos and Gallego, 2000). ... (2) Quadratic (Q), (Dave, 1971): 2 )t( ct bta Y ++= (3) Cubic (C), Page 3. 248 ...

Research paper thumbnail of Relationship between Persistency Values Defined with Various Methods and Some Lactation Traits of Brown Swiss Cattle in Turkey

Http Dx Doi Org 10 1080 09712119 2008 9706958, Nov 14, 2011

ABSTRACT Zülkadir, U., Aytekin, I. and Keskin, 1. 2008. Relationship between persistency values d... more ABSTRACT Zülkadir, U., Aytekin, I. and Keskin, 1. 2008. Relationship between persistency values defined with various methods and some lactation traits of Brown Swiss cattle in Turkey. J. App. Arum. Res., 34: 137–141.

Research paper thumbnail of Çumra Zi̇raat Meslek Li̇sesi̇nde (Konya) Yeti̇şti̇ri̇len Esmer İnekleri̇n Süt Veri̇m Özelli̇kleri̇ Ve Bu Özelli̇klere Ai̇t Tekrarlanma Dereceleri̇çumra Zi̇raat Meslek Li̇sesi̇nde (Konya) Yeti̇şti̇ri̇len Esmer İnekleri̇n Süt Veri̇m Özelli̇kleri̇ Ve Bu Özelli̇klere Ai̇t Tekrarlanma

Selcuk Tarım Ve Gıda Bilimleri Dergisi a, Jan 11, 2003

Bu arastirmada, Çumra Ziraat Meslek Lisesinde yetistirilen Esmer ineklerin süt verim özellikleri ... more Bu arastirmada, Çumra Ziraat Meslek Lisesinde yetistirilen Esmer ineklerin süt verim özellikleri bakimindan performanslari ile bu özelliklere ait tekrarlanma dereceleri belirlenmistir. Incelenen özelliklere ait en küçük kareler ortalamalari Laktasyon Süresi (LS), Laktasyon Süt Verimi (LSV), Günlük Ortalama Süt Verimi (GOSV) ve Günlük Maksimum Süt Verimi (GMSV) için sirasiyla 266. 33±4.740 gün, 2578.71±43.230 kg, 9.59±0.469 kg ve 15.19±0.217 kg olarak bulunmustur. Ayni özelliklere ait tekrarlanma dereceleri ise sirasiyla 0.275±0.0860, 0.255±0.0870, 0.234±0.0870 ve 0.172±0.0880 olarak hesaplanmistir. Arastirmada yilin LSV (p<0.01), LS, GOSV ve GMSV'ye (p<0.05) etkisi istatistik olarak önemli bulunmustur. Laktasyon sirasinin LS (p<0.05), LSV, GOSV ve GMSV'ye (p<0.01) etkisi ve buzagilama mevsiminin incelenen özelliklerin tamami üzerine etkisi (p<0.01) istatistik olarak önemlidir. determined as 266.33±4.740 days, 2578.71±43.230 kg, 9.59±0.469 kg and 15.19±0.217 kg respectively. Repeatabilities of LP, LMY, ADMY and MDMY were found as 0.275±0.0860, 0.255±0.0870, 0.234±0.0870 and 0.172±0.0880 respectively. The year had a significant effect on LMY (p<0.01), LP, ADMY and MDMY (p<0.05). Effect of Lactation Number on LP (p<0.05), LMY, ADMY and MDMY (p<0.01) and effect of calving season on all traits (p<0.01) were found to be statistically significant.

Research paper thumbnail of Süt Sığırlarında Bulanık Mantık Yöntemi ile Örnek Ayıklama Modelinin Oluşturulması

Research paper thumbnail of Some Phenotypic Parameters for Earlyslaughtered Akkaraman Lambs

Research paper thumbnail of Mycorrhizal Colonisations of Naturally Evolving Weeds at Different Mine Waste Mounds in Central Anatolia –Turkey

Soil and water pollution including heavy metals increased because of the industrialization. Weeds... more Soil and water pollution including heavy metals increased because of the industrialization. Weeds heavy metal uptake and accumulation depend on the density of available metals in waste soils. Arbuscular Mycorrhizal (AM) increases productivity and tolerance of weeds, as well as their resistance to different abio-and biotic stresses. The role of AM in metal uptake remains largely unclear. AM may be beneficial for the metal streesed weeds and several AM fungal strains can be isolated from metal-enriched soils. In this study AM inoculations on weed populations existing in pastures adjacent to a different waste mounds (mercury, lead, arsenic and cadmium) stocked on open field were surveyed in Central Anatolia. 35 weed species belonging to 16 families were collected from the pastures constituted 60% of total land. AM colonization was recorded in 28 species accounting for 90% of which 35 weeds about 60% covered land. Hyphal, arbuscul and vesicul infection was noticed on the weeds. Weeds ha...

Research paper thumbnail of BAZI BAKLA (Vicia faba L.) GENOTİPLERİNDE TANE VERİMİ VE VERİME ETKİ EDEN ÖZELLİKLER ARASINDAKİ İLİŞKİLERİN BELİRLENMESİ

ANADOLU JOURNAL OF …, 2011

... kısmi regresyon katsayısı şeklinde tanımlanan path katsayısı analizini kullanmaktadır (Ghoss ... more ... kısmi regresyon katsayısı şeklinde tanımlanan path katsayısı analizini kullanmaktadır (Ghoss ve Chatterjee, 1988; Shabana ve ark., 1990; Board ve ark., 1997). Verime etki eden karakterlerin belirlenmesi ve bu karakterlerin ...

Research paper thumbnail of Comparison of Six Different Mathematical Models to the Lactation Curve of Simmental Cows Reared in Kazova State Farm

The aim of this study was to investigate the fitness of Incomplete Gamma (WD), Quadratic (Q), Cub... more The aim of this study was to investigate the fitness of Incomplete Gamma (WD), Quadratic (Q), Cubic (C), Exponential (WIL), Mixed Log (ML) and Polynomial Regression (AS) models to the lactation curve of Simmental Cows. Data were collected from 752 Simmental cows raised on the Kazova state farm in Turkey. Milk yield was recorded monthly. Total milk yields estimated by the 6 models were very close to real total milk yield. The 6 models were found to be adequate for estimation of milk yield. ML model underestimated the peak yield significantly. The differences between peak yields of the models and real peak yield were statistically insignificant (p>0.05) and they were ranged from 13.19-18.59 l. Cubic models forecasted peak time earlier than real peak time. The differences between the persistency values of the 6 models were insignificant (p>0.05). The 6 model`s persistency value was nearly equal to real persistency value. R2 values of the 6 models changed from 92.69-95.14%. The hi...

Research paper thumbnail of Estimation of 305 Days Milk Yield Using Partial Milk Yield in Holstein Cattle

In this study, estimation of 305 days milk yield of Holstein cows raised in a Private enterprise ... more In this study, estimation of 305 days milk yield of Holstein cows raised in a Private enterprise of Karapınar district of Konya Province using their partial lactation records was aimed. A total of 105 first lactation records were used as the research of the study. 305 day milk yield was found to be 5997 ± 107.95 liters. Estimated milk yields by Holland methods and partial lactation records (30, 61, 91, 122, 152, 183, 213, 244 and 274) day were changed between 5788 ± 92.42 and 6198 ± 118.38, the difference between them was statistically insignificant (P>0.05). Average lactation length and actual milk yield were 312 ± 4.37 and 6369 ± 149, respectively. By the way, there were statistically significant and higher correlation coefficients among actual 305 days milk yield, estimated milk yields by Holland methods and milk yields estimated by partial lactation records as 0.681-0.984 and 0.701-0.979, respectively (P<0.01).At the end of the study, it was stated that the 305 days milk y...

Research paper thumbnail of Analysis of Covariance on The Randomized Plot Factorial Experiment Design

This study is conducted in order to determine the effectiveness of the analysis of variance and c... more This study is conducted in order to determine the effectiveness of the analysis of variance and covariance on the randomized plot factorial experiment design for this purpose, comparative analysis of covariance analysis of variance tries to explain, while the created artificial data set applying to randomized plot factorial experiment design respectively. Analysis of covariance is an analysis which consists of analysis of variance and regression technique used together. Although the application of this technique consists of different experiment design analysis of covariance can be applied to all experimental design. This analysis used by dividing non-homogeneous materials to sub-blocks or a co-variable (concomitant variable-covariates) to obtain more reliable results and experimental design to increase sensitivity of experimental design. In this study, in all experimental design covariates error variance ratio was determined that lower values compared to analysis of variance. The de...

Research paper thumbnail of Investigation of Relationship Between Some Initial Fattening Body Measurements and Cold Carcass Weight in Akkaraman Lambs by Using Path Analysis

ABSTRACT In this research, 14 Akkaraman lambs were fattened after weaning at the 2.5 month age an... more ABSTRACT In this research, 14 Akkaraman lambs were fattened after weaning at the 2.5 month age and then slaughtered. Fattening period constituted three months. Direct and indirect relationships between body measurements (live weight (X 1), wither heights (X 2), hearth girth (X 3), chest depth (X 4), leg girth (X 5) and body length (X 6)) taken at the beginning of fattening period and cold carcass weight (Y) in Akkaraman lambs were determined by path analysis. The path coefficients related to direct effects of each variables on estimated variable were determined as-0.1913 for X 1 , 0.6035 for X 2 , 0.7921 for X 3 , 0.1792 for X 4 , 0.3694 for X 5 ,-0.8731 for X 6 respectively. The determination coefficient (R 2) was found as 80.6. It has been determined that the factors which have the highest effects on the cold carcass weight are the heart girth, body weight and wither heights. According to these results, it was stated that hearth girth, body length and wither heights could be used ...

Research paper thumbnail of Lactation Curve Traits of Holstein Cows Raised at Polatlı State Farm

Kafkas Üniversitesi Veteriner Fakültesi Dergisi

Research paper thumbnail of Comparison Of The Linear And Quadratic Models For Describing The Growth of Live Weight and Body Easurements In Anatolian Merino Male Lambs In Fattening Period

The linear and quadratic models were used to estimate growth of live weight and body measurements... more The linear and quadratic models were used to estimate growth of live weight and body measurements in Anatolian Merino male lambs from weaning (75 days) to 145 days of age. Lambs were fed for a 63 days feeding period after a week of adaptation period. The feed contained 2775 kcal/kg metabolic energy and 15 % crude protein. Both of the models showed good fit to the live weight and leg girth data (R2=0.990 and 0.984). The quadratic model gave a better fit to withers height, rump height; chest girth, chest depth and body length data and allowed a suitable description of growth curve by its higher R2 and lower MSE values (P<0.01).

Research paper thumbnail of Hayvancılıkta Bulanık Mantık Uygulamaları

FUZZY LOGIC APPLICATIONS IN ANIMAL BREEDING ABSTRACT In statistics and probability theory we are ... more FUZZY LOGIC APPLICATIONS IN ANIMAL BREEDING ABSTRACT In statistics and probability theory we are working with certainty but our lives full of the uncertainties. Therefore, the human have to work with uncertainties to improve own resulting ability. Fuzzy logic uses approximation instead of exact information, imitating the human thinking. The basic difference between classical logic and fuzzy logic is, classical logic allows mathematics to use only extreme values. Therefore, modeling and controlling of complicated systems with classical mathematical methods is difficult, due to the complete inputs. The fuzzy set theory is based on an extension of the classical meaning of the term 'set' and formulates specific logical and arithmetical operations for processing imprecise and uncertain information. In this study, it was tried to explain the basic of the fuzzy logic due to the recently implementation of fuzzy logic in animal science, then was presented some samples of studies made...

Research paper thumbnail of Determination of the Relationship between initial fattening body measurements and Slaughter, Hot and Cold Carcass Weights in Akkaraman Lambs by Using Regression Analysis

This study was carried out to investigate the relationship between initial fattening live weight ... more This study was carried out to investigate the relationship between initial fattening live weight and body measurements and slaughter, hot and cold carcass weights of Akkaraman lambs by using regression analysis. Data were collected from 14 Akkaraman lambs fattened at the state of the Prof. Dr. Orhan Düzgüneş Research and Application Farm of Department of Animal Science, Agricultural Faculty, Selcuk University. Body measurements were taken one by one, firstly. After then, the height measurements (X2+X3=X7), depth measurement (X5), circumference measurements (X4+X6=X8), height-circumference measurements (X2+X3+X4+X6=X9), heightdepth measurements (X2+X3+X5=X10), circumference-depth measurements (X4+X5+X6=X11) all body measurements (X1+X2+X3+X4+X5+X6=X12) were taken for regression analysis by using among themselves. The highest correlation were found between slaughter weight and initial fattening rump height (X3) as 0.699, the correlation between hot carcass weight and initial fattening...

Research paper thumbnail of Application of different models to the lactation curves of unimproved Awassi ewes in Turkey

South African Journal of Animal Science, 2006

... Livest. Prod. Sci. 44, 37-44. Chang, YM, Rekaya, R. Gionala, D. &amp; Thomas, DL, 2001. .... more ... Livest. Prod. Sci. 44, 37-44. Chang, YM, Rekaya, R. Gionala, D. &amp; Thomas, DL, 2001. ... J. Dairy Sci. 60, 2340-2354. Franci, O., Pugliese, C., Acciaioli, A., Parisi, G. &amp; Lucifero, M., 1999. Application of two models to lactation curves of Masese ewes. Small Rumin. Res. 31, 91-96. ...