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Öğe Batı Akdeniz'de onbir yeni lokalitede yayılış gösteren çayır faresi Microtus levis (Rodentia: Cricetidae)'nin ekolojik tercihleri(2011) Yavuz, Mustafa; Öz, Mehmet; Albayrak, İrfanBu çalışmada; 2007 yılı Temmuz-Eylül aylarında, Microtus levis'1 in tercih ettiği habitat tipi ve habitat karakteristikleri araştırılmıştır. Çalışmada 11 lokaliteden (Seki, Yazır, Korkuteli, Bozova, Kızılkaya, Kozan, Kocaaliler, Bozdoğan, Gebiz, Kasımlar ve Derebucak) M. levis türüne ait toplam 76 (52 \male\male24\female\female) adet örnek ölü ve 22 (\male\male9\female\female) adet canlı olmak üzere toplam 98 örnek kullanılmıştır. Çalışılan tüm lokalite-ler ilk kayıt olma özelliğindedir. Eşeylere göre örneklerin yaylı kapana yakalanma frekansları arasında fark bulunurken, canlı olarak yakalanma frekansları bakımından eşeyler arasında istatistiksel farklılık bulunmamıştır \chi2_{olu} 5,34, df 1, p 0,02 ve \chi2_{canli} ,37, df 1, p 0,54). Diğer taraftan, örneklerin yakalandıkları lokalitelerin rakımlarına göre; ölü ve canlı olarak yakalanma frekansları ile populasyon yoğunlukları arasında pozitif yönde korelasyonlar tespit edilmiştir r_{olu} 0,750; n 11; p 0,031, r_{canli}, 0,918; n 11; p 0,041 ve r_{yoğunluk} 0,912; n 11; p 0,001). M. levis nemli yuva alanlarında, dere ve çay kenarlarında koloniler halinde yaşar. Çalışmada yuvaların çoğunlukla 31-60'lik eğimli alanlara ve güneş alan bakılara yapıldığı görülmüştür. Yakalanan örneklerin yuvalarının bakıları incelendiğinde; 76 ölü örneğin 64'ünün (%84,21), 22 canlı örneğin 20'sinin (%90,91) yakalandığı bakının ve populasyon yoğunluğunun %94,05'inin güney, güneydoğu ve güneybatı yönünde olduğu görülmektedir. Anahtar Kelimeler: Antalya, bakı, ekoloji, Microtus levis, Rodentia.Öğe Bir Anadolu endemiği; Anadolu tarla faresi Microtus anatolicus'nin ekolojik tercihleri(2011) Yavuz, Mustafa; Öz, Mehmet; Albayrak, İrfanBu çalışmada; 2007 yılı Haziran-Temmuz aylarında, bir Anadolu endemiği olan Microtus anatolicus'un tercih ettiği habitat tipi ve habitat karakteristikleri araştırılmıştır. Çalışmada 4 lokaliteden (Kozan, Bozdoğan, Cevizli ve Dereköy) M. anatolicus türüne ait toplam 63 ($29_{\male \male} + 34_{\female \female}$) adet örnek ölü ve 16 ($7_{\male \male} + 9_{\female \female}$) adet canlı olmak üzere toplam 79 örnek kullanılmııştır. Çalışılan lokalitelerden Cevizli ve Dereköy ilk kayıt olma özelliğindedir. Eşeylere göre örneklerin ölü yakalanma ve canlı yakalanma frekansları arasında istatistiksel bir farklılık yoktur ( $X^2_{ölü}$ = 0,20; df= 1; p= 0,66 ve $X^2_{canlı}$ = 0,13; df= 1; p= 0,72). Diğer taraftan, örneklerin yakalandıkları lokalitelerin rakımlarına göre; ölü ve canlı olarak yakalanma frekansları ile populasyon yoğunlukları arasında pozitif yönde korelasyonlar tespit edilmiştir (sırasıyla, $r_{ölü}= 0,742; n=4; p= 0,023, r_{canlı} = 0,785; n=4; p= 0,037$ ve $r_{pop.yoğ.} = 0,933; n= 6; p= 0,009)$. M. anatolicus kuru ve dar yuva alanlarında, küçük koloniler halinde yaşar. Çalışmada az eğimli de olsa (200 ye kadar) yuvaların çoğunlukla güneş alan bakılara yapıldığı görülmüştür. Yakalanan örneklerin yuvalarının bakıları incelendiğinde; 63 ölü örneğin tamamının (%100), 16 canlı örneğin tamamının (%100) yakalandığı ve populasyon yoğunluğunun %98,94'ünün güney, güneydoğu ve güneybatı yönünde olduğu görülmektedir. Yani kuzey bakılı alanlardan hiç örnek yakalanmamıştır.Öğe DEMONSTRATION OF RESONANT ADAPTIVE MIRRORS(IEEE, 2021) Kamel, Amr; Kocer, Samed; Das, Taylan; Mukhangaliyeva, Lyazzat; Saritas, Resul; Hajireza, Parsin; Yavuz, MustafaWe present a novel continuous deformable mirror (DM). The mirror can be integrated into optical systems to compensate for multiple wavefront aberrations during real-time scanning of the human retina and other targets. Specifically, it can correct all seven of the wavefront aberrations dominant in ophthalmic applications. The mirror assumes the desired shape to correct an aberration via resonant electrostatic actuation. It eliminates the need for a large number of electrodes and dependence algorithm required for spatial control of segmented DMs. It also realizes an additional benefit of dynamic amplification, thereby increasing the stroke distance. In addition, we demonstrate that the fundamental (defocus) mode of the DM can be used to change the location of the focal point for a reflected laser beam by up to 485 mu m.Öğe Ecological Preferences of the Anatolian Vole Microtus anatolicus (Rodentia: Cricetidae), an endemic species of the Anatolia(Foundation Environmental Protection & Research-Fepr, 2011) Yavuz, Mustafa; Oz, Mehmet; Albayrak, IrfanIn this study, from June to July 2007, habitat type and characteristics of Microtus anatolicus an endemic species of the Anatolia was investigated. Of the caught 79 samples, 63 (29 male male +34 female female) were dead individuals and 16 (7 males +9 females) were alive from four localities (Kozan, Bozdogan, Cevizli and Derekoy). Also Cevizli and Derekoy are first records for species. There were no differences between sexes for snaptrapping and livetrapping (chi(2)(snaptrapping)=0.20; p=0.66 ve chi(2)(livetrapping)=0.13; df=1; p=0.72). On the other hand, there were strong positive correlations between the capture frequencies in traps (snap and livetrap), also population density and the altitude of localities (rsnaptrapping=0.742; n=4; p=0.023, r(snaptrapping)=0.785; n= 4; p= 0.037 ve r(density)=0.933; n=6; p=0.009). M. anatolicus lives in dry and narrow nesting areas at small colonies. In the areas, observed that nesting in with slopes of 0-20 degrees at sunny south-facing areas. All of 63 dead and all of 16 alive individuals were caught on the south-facing (south, southeast, and southwest) exposures, but not north-facing areas. Also 98.94% of population density in South-facing areas.Öğe Ecological Preferences of the East European Vole Microtus levis (Rodentia: Cricetidae) in the West Mediterranean Region at Eleven New Localities(Foundation Environmental Protection & Research-Fepr, 2011) Yavuz, Mustafa; Oz, Mehmet; Albayrak, IrfanIn this study, from July to September 2007, habitat type and characteristics of Microtus levis was investigated. Of the caught 98 samples, 76 (52 males +24 females) were dead individuals and 22 (13 males + 9 females) were alive from eleven localities (Seki, Yazir, Korkuteli, Bozova, Kizilkaya, Kozan, Kocaaliler, Bozdogan, Gebiz, Kasimlar and Derebucak). Also all of this localities are first records for species. There were statisticaly significant between sexes for snaptrapping but no differences for livetrapping (chi(2)(snaptrapping) = 5.34, df = 1, p = 0.02 and chi(2)(livetrapping) = 0.37, df = 1, p = 0.54). On the other hand, there were strong positive correlations between the capture frequencies in traps (snap and livetrap), also population density and the altitude of localities (r(snaptrapping) = 0.750; n = 11; p = 0.031, r(livetrapping) = 0.918; n = 11; p = 0.041 and r(density) = 0.912; n = 11; p = 0.001). M. levis lives in wet places and near the brook and river at colonies. In the areas, observed that nesting in with slopes of 31-60 degrees at sunny south-facing areas. 64 of 76 dead and 20 of 22 alive individuals were caught on the south-facing (south, southeast, and southwest) exposures. Also 94.05% of population density in South-facing areas.Öğe Levant vole (Microtus guentheri (Danford and Alston 1880) prefers southerly-facing slopes in agricultural sites at Antalya, Turkey(Univ Oradea Publ House, 2010) Yavuz, Mustafa; Öz, Mehmet; Albayrak, İrfanIn this study preferred habitat type and characteristics of Microtus guentheri was investigated. Of the caught animals, 152 (75 females; 77 males) were dead individuals and 61 (32 females; 29 males) were alive. Living individuals were tagged, measured, and released. All samples were taken from the various habitats found within the province of Antalya (Turkey), from April-August 2000 to April-August 2003. Most of the voles were found in agricultural areas (46.71% dead and 54.10% alive) or on roadsides close to agricultural areas (42.76% dead and 46.71% alive). Only 10.53% of live voles and 3.28% of live voles were caught in grasslands. In the areas with slopes of 0-45 degrees, there were strong positive correlations between the capture frequency in traps and the slope (r(snaptrapping)=0.930; p<0.0001 and r(livetrapping)=0.916; p<0.001). On the other hand, a very strong negative correlations were found between capture frequency and slope for the areas with slopes of 46-90 degrees (r(snaptrapping)=-0.972; p<0.006 and r(livetrapping)=-0.832; p<0.005). In the sample of 152 dead and 61 living voles, 97 (63.82%) and 42 (68.85%) were caught in areas with slopes of 31-60 degrees. Most of the individuals caught (n(snaptrapping)=106; 69.736% and n(livetrapping)=51; 84.443%) were trapped on the south, southeast, and southwest exposures, but there were no differences between the east and west exposures. Moreover, significant positive correlations between altitude of sites and frequency of capture in snaptraps and Sherman livetraps (r(snaptrapping)=0.880; n=6; p=0.021, r(livetrapping)=0.828; n=6; p=0.042, respectively) were found. Thus, trapping success and population density (r(density)=0.966; n=6; p=0.002) increased along with increasing altitude.Öğe Long-Term Stability of Ferroelectret Energy Harvesters(MDPI, 2020) Kayaharman, Muhammed; Das, Taylan; Seviora, Gregory; Saritas, Resul; Abdel-Rahman, Eihab; Yavuz, MustafaCellular polypropylene (PP) has been recently used in energy harvesting applications. In this work, we investigate its viability and long-term stability under various operating conditions. Specifically, the effect of constant stress and stress cycling on output power and long-term stability of ferroelectret energy harvesters is analyzed. Our findings show that after 112 days constant stress significantly increases the piezoelectric charge constant d(33) and output power from 0.51 mu W for a stress-free harvester to 2.71 mu W. It also increases the harvester center frequency from 450 to 700 Hz and decreases its optimal resistance from 7 to 5.5 M Omega.Öğe Six New localities for Microtus guentheri (Danford and Alston, 1880), (Mammalia: Rodentia) from Antalya province, in Turkey(2008) Yavuz, Mustafa; Öz, Mehmet; Albayrak, İrfanIn this study, we reported additional records for Microtus guentheri (Danford and Alston, 1880) which trapped from the six localities; Yazır, Korkuteli, Sülekler, Alibeli, Akpınar and Taşkesiği), in Antalya Province. Also, some ecological characteristics of the localities, and some morphological measurements for samples were given this study. This is the fi rst records for Microtus guentheri from this six localities.Öğe Structural Health Monitoring via Phase Space Warping and Time-Delay Embedding(Asce-Amer Soc Civil Engineers, 2023) Saritas, Resul; Das, M. Taylan; Rasheed, Omar; AlHamaydeh, Mohammad; Yavuz, Mustafa; Abdel-Rahman, EihabThe state of a structure's health can be determined by investigating its vibration characteristics. Vibration-based structural health monitoring (SHM) enables early detection and diagnosis of damage as well as extension of service life. Herein, linear and nonlinear tracking metrics are proposed to track deterioration in the condition of multistory structures and assess their instantaneous health in real-time via measurement of floor accelerations. The linear metrics, the amplitude damage index ADIn(t over bar ) and the frequency damage index FDIn(t over bar ), are based on tracking the power spectra of floor accelerations. The nonlinear metric e(t over bar ) is based on a novel implementation of the phase-space warping method and obtained from the orbits representing the floors' motions in pseudo phase-space. A scaled-down model of a four-floor moment-resisting frame building is designed and fabricated to demonstrate and to compare the capabilities of the three damage indices. Structural damage is introduced to individual columns, to mimic damage initiation, by cutting two notches on opposite sides of a column cross-section at midheight. The ADIn(t over bar ) detected large damage events, fast deterioration beyond them, and the onset of failure using any of the four floor accelerations. The FDIn(t over bar ) proved insensitive to damage compared with the other two metrics. The nonlinear metric e(t over bar ) detected gradual (fatigue-induced) deterioration in the building's health before introduction of damage, large damage events, fast deterioration beyond them, and the onset of failure, using any of the four floor accelerations. The e(t over bar ) metric varied slowly and continuously with gradual deterioration and exhibited larger discontinuous jumps with discrete damage events. This was true for all three damage experiments undertaken on the model building. The nonlinear e(t over bar ) metric was also found to be more efficient, in terms of signal utilization, in comparison with the linear ADIn(t over bar ) metric. 1415.(c) 2022 American Society of Civil Engineers.Öğe Two new locality records extend the distribution of Microtus anatolicus Krystufek and Kefelioglu, 2002 (Mammalia: Rodentia) into Antalya Province in Turkey(Univ Oradea Publ House, 2009) Yavuz, Mustafa; Oz, Mehmet; Albayrak, IrfanAdditional records for Microtus anatolicus Krystufek and Kefelioglu, 2002 which were trapped from the two localities; Bozdogan and Kozan in Antalya Province, is reported along with their morphological measurements and karyological features and some ecological characteristics of the localities. These are the first records for M. anatolicus from these two localities, the first records from Antalya Province. Therefore the species distributional range is extended to the south of Central Mediterranean Region of Turkey into the Taurus Mountains.
