263,016 research outputs found
Valuing the environment in developing countries: Modeling the impact of distrust in public authorities' ability to deliver public services on the citizens' willingness to pay for improved environmental quality
No full textIn this paper, we employ the choice experiment method to estimate local citizens' valuation of a public intervention that proposes to improve the quality of an important environmental resource, namely, the Ganges River in India. To elicit citizens' willingness to pay (WTP) higher municipality taxes for an intervention that proposes to improve the quantity and quality of wastewater treated by the local sewage treatment plant (STP), 150 randomly selected citizens of the municipality of Chandernagore, located on the banks of the Ganges River in West Bengal, were interviewed. The findings reveal that almost all (98 percent) of the citizens value the quality of the water and the environment in the Ganges, though a great majority (90 percent) protested the intervention by not choosing the improved STP scenario in at least one of the eight hypothetical markets in which they were asked to participate. When asked their reasons for not preferring the improved scenarios, 92 percent of them stated that they do not trust the authorities to efficiently and effectively manage the funds generated through additional taxes. The protest responses were controlled for with the use of the nested logit model (NLM). The results reveal that the citizens are willing to pay significant amounts to ensure that the intervention takes place and that an improved STP treats larger amounts of wastewater to a higher quality before discharging it to the Ganges. Therefore, to improve the wastewater management services and the related environmental quality in the water bodies into which treated wastewater is deposited, the municipalities could rely—at least to some extent—on their citizens' WTP higher taxes for provision of improved services. To capture this WTP, however, municipalities' performance, trustworthiness, and accountability, as well as the citizens' perceptions of these, should be improved.choice experiment method, nested logit model, willingness to pay, sewage treatment plant, distrust in public authorities,
Natural convection heat transfer in a partially divided trapezoidal enclosure
No full textNat u ral con vec tion heat trans fer in a par tially di vided trap e zoidal en clo sure is stud ied nu mer i cally us ing the con trol vol ume method. Sum mer and win ter con di - tions are sep a rately ex am ined by im pos ing re gard ing ther mal bound ary con di tions. A hor i zon tal di vider in cluded and its two dif fer ent place ments are con sid ered. It is shown that heat trans fer re sults are not sig nif i cantly al tered by the pres ence of the di vider for sum mer con di tion. For win ter con di tion, on the other hand, dec re ment in heat loss and ef fect on the flow and the tem per a ture fields by the pres ence and the place ment of the di vider are ob served, re spec tively. As a hor i zon tal di vider is placed to op pose buoy ancy, the flow strength be comes weaker and for ma tion of two sep a rate lev els of tem per a ture uni for mity oc curs. As the di vider is placed to as sist buoy ancy, the flow gets stron ger and tends to form rel a tively uni form tem per a ture field within whole en clo sur
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Coal quality modelling of Kangal coal mine by kriging
No full textBu tezin, veri tabanı üzerinden yayınlanma izni bulunmamaktadır. Yayınlanma izni olmayan tezlerin basılı kopyalarına Üniversite kütüphaneniz aracılığıyla (TÜBESS üzerinden) erişebilirsiniz.Fen Bilimleri Enstitüsü, Maden Mühendisliği Ana Bilim DalıIV ÖZET Yüksek Lisans Tezi KRİGİNG YÖNTEMİ İLE KANGAL KÖMÜR SAHASI KÖMÜR KALİTE MODELLEMESİ Kadriye MURAT Cumhuriyet Üniversitesi Fen Bilimleri Enstitüsü Maden Mühendisliği Anabilim Dalı Danışman: Prof. Dr. Birol ELEVLİ Bu çalışmada, Kangal-Kalburçayırı kömür sahasında kömür kalite değişkenleri olan kalori, kalınlık, nem, kül ve kükürt kullanılarak kömür kalite nıodellemesi yapılmıştır. Öncelikle kömür kalite değişkenlerinin variogram analizleri yapılmış ve bu analizler yardımıyla yön diyagramları çizilmiştir. Yön diyagramlarından elde edilen veriler tasarım programına aktarılmış ve tasarım programında her parametrenin üst ve alt damar için blok modeli oluşturulmuştur. Oluşturulan blok modellere kıiging yöntemi kullanılarak değer atanmış ve yine aynı yöntemle rezerv miktarı hesaplanmıştır. Yapılan hesaplamalar sonucu üst damar rezerv miktarı 35.388.246 ton, alt damar rezerv miktarı ise 43.241.948 ton bulunmuştur. Üst damar için en yüksek rezerv miktarı 1000-1250 Kcal arasında 13.151.762 ton, alt damar için de 1000- 1250 Kcal arasında 20.100.295 ton çıkmıştır. Kömür sahasının üç boyutlu blok görüntülerinin incelenmesi sonucunda cevherleşmenin kuzeybatı-güneydoğu doğrultusunda geliştiği belirlenmiştir. ANAHTAR KELİMELER: kömür, blok model, jeoistatistik, kriging.ABSTRACT Master of Science Thesis Coal Quality Modelling of Kangal Coal Mine by Kriging K a eltiye Murat Cumhuriyet University- Graduate School of Natural and Applied Sciences Department of Mining Engineering Supervisor : Prof.Dr. Birol Elevli In this study, the coal quality variables (calori, sulphur, ash and moisture) of Kangal Kalburçayırı coal area were modelled. Initially, the conceptual block model of the area has been created Then the variogram analysis of variables have been carried out. The results of variogram analysis have been used to assign the value of quality parameters for each block by utilizing kriging. The obtained block model is used to determine the reserve of the coal area. The coal reserve of upper and lower seams are found 35388246 tons and 4324 1 048 tons, respectively. It is seen that the maximum reserve of 13 I 5 1762 tons is ranging between 1000 to 1250 Kcal in the upper seam and 20100295 tons of lower seam is also ranging between 1000 to 1250 Kcal. The investigations of three dimensional block model views showed that the mineralization is in the direction of northwest-southeast. KEY WORDS: Coal, block model, geostatistics, krigin
Monoblastus discedens
No full textMonoblastus discedens (SCHMIEDEKNECHT 1912) M a t e r i a l e x a m i n e d: 5. Station, 1625m, 15.VI.2007, 1♀. G e n e r a l d i s t r i b u t i o n: Europe, Western Palaearctic (YU & HORSTMANN 1997). D i s t r i b u t i o n i n T u r k e y: Isparta,Eğirdir (GÜRBÜZ & KOLAROV 2006).Published as part of M. F, Kirtay, H. & Birol, O., 2009, A study of Ichneumonidae (Hymenoptera) of Kasnak Oak Forest Nature Reserve in Turkey with new records, pp. 1985-2003 in Linzer biologische Beiträge 41 (2) on page 1996, DOI: 10.5281/zenodo.528027
Enicospilus ramidulus
No full textEnicospilus ramidulus (LINNAEUS 1758) M a t e r i a l e x a m i n e d: 5. Station, 1625m, 02.VII.2007, 13. G e n e r a l d i s t r i b u t i o n: Eastern Palaearctic, Ethiopian, Europe, Oriental, Western Palaearctic (YU & HORSTMANN 1997). D i s t r i b u t i o n i n T u r k e y: Isparta,Eğirdir (KOLAROV & GÜRBÜZ 2006).Published as part of M. F, Kirtay, H. & Birol, O., 2009, A study of Ichneumonidae (Hymenoptera) of Kasnak Oak Forest Nature Reserve in Turkey with new records, pp. 1985-2003 in Linzer biologische Beiträge 41 (2) on page 1995, DOI: 10.5281/zenodo.528027
Alloplasta piceator
No full textAlloplasta piceator (THUNBERG 1824) M a t e r i a l e x a m i n e d: 5. Station, 1625m, 08.V.2007, 2♀♀. G e n e r a l d i s t r i b u t i o n: Eastern Palaearctic, Europe, Nearctic, Western Palaearctic (YU & HORSTMANN 1997). D i s t r i b u t i o n i n T u r k e y: Isparta,Eğirdir (KOLAROV & GÜRBÜZ 2006).Published as part of M. F, Kirtay, H. & Birol, O., 2009, A study of Ichneumonidae (Hymenoptera) of Kasnak Oak Forest Nature Reserve in Turkey with new records, pp. 1985-2003 in Linzer biologische Beiträge 41 (2) on page 1987, DOI: 10.5281/zenodo.528027
Itoplectis maculator
No full textItoplectis maculator (FABRICIUS 1775) M a t e r i a l e x a m i n e d: 1. Station, 925m, 05.V.2007, 1♀. G e n e r a l d i s t r i b u t i o n: Eastern Palaearctic, Europe, Western Palaearctic (YU & HORSTMANN 1997). D i s t r i b u t i o n i n T u r k e y Ankara, Eskişehir, Konya, Nevşehir, Yozgat (ÖZDEMIR & KILINÇER 1990); Erzurum (KOLAROV et al. 1999); Çanakkale, İstanbul, Edirne, Kırklareli, Tekirdağ (YURTCAN 2004); Artvin, Bayburt, Erzurum, Gümüşhane, Rize, Kars (ÇORUH 2005).Published as part of M. F, Kirtay, H. & Birol, O., 2009, A study of Ichneumonidae (Hymenoptera) of Kasnak Oak Forest Nature Reserve in Turkey with new records, pp. 1985-2003 in Linzer biologische Beiträge 41 (2) on page 1995, DOI: 10.5281/zenodo.528027
Stenarella domator
No full textStenarella domator (PODA 1761) M a t e r i a l e x a m i n e d: 2. Station, 1225m, 23.V.2007, 1♀. G e n e r a l d i s t r i b u t i o n: Europe, Western Palaearctic (YU & HORSTMANN 1997). D i s t r i b u t i o n i n T u r k e y: Isparta,Eğirdir (GÜRBÜZ & KOLAROV 2008).Published as part of M. F, Kirtay, H. & Birol, O., 2009, A study of Ichneumonidae (Hymenoptera) of Kasnak Oak Forest Nature Reserve in Turkey with new records, pp. 1985-2003 in Linzer biologische Beiträge 41 (2) on page 1991, DOI: 10.5281/zenodo.528027
Aritranis longicauda
No full textAritranis longicauda (KRIECHBAUMER 1873) M a t e r i a l e x a m i n e d: 3. Station, 1425m, 07.VI.2007, 13. G e n e r a l d i s t r i b u t i o n: Europe, Western Palaearctic (YU & HORSTMANN 1997). D i s t r i b u t i o n i n T u r k e y Isparta, Eğirdir, Uluborlu (GÜRBÜZ & KOLAROV 2008).Published as part of M. F, Kirtay, H. & Birol, O., 2009, A study of Ichneumonidae (Hymenoptera) of Kasnak Oak Forest Nature Reserve in Turkey with new records, pp. 1985-2003 in Linzer biologische Beiträge 41 (2) on page 1989, DOI: 10.5281/zenodo.528027
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