Effect of the sub-sampling procedure on the accuracy of the selectivity experiments
Başlık çevirisi mevcut değil.
- Tez No: 400711
- Danışmanlar: DR. DICK FERRO, DR. JACK ROBERTSON
- Tez Türü: Yüksek Lisans
- Konular: Balıkçılık Teknolojisi, Denizcilik, Fisheries Technology, Marine
- Anahtar Kelimeler: Belirtilmemiş.
- Yıl: 1993
- Dil: İngilizce
- Üniversite: University of Aberdeen
- Enstitü: Yurtdışı Enstitü
- Ana Bilim Dalı: Deniz Biyolojisi ve Balıkçılık Ana Bilim Dalı
- Bilim Dalı: Belirtilmemiş.
- Sayfa Sayısı: 58
Özet
Özet yok.
Özet (Çeviri)
A sea trial was conducted in June 1993 on commercial fishing grounds some 10 - 20 miles north-west of Fraserburgh, in depths varying from 50 to 55 fathoms. The experiments were carried out aboard the commercial trawler“Golden West”and except for a possible cover effect and a shorter haul duration they occurred under the same condition as in fishing. Two different codends were tested by using covered codend method. The catch was filled into baskets with haddock separated from the rest. Then, all of haddocks were weighed and measured to the nearest cm. below. From the total distribution of the fish in the codend and cover of each haul, the expected frequencies at each length were found. Then these expected frequencies were compared to the observed frequencies using the chi-squared statistic. Referring to Table 2, results showed that particularly in cover, the ratio of the non- representative baskets can be very high. In the second set of analysis, the fit of the logistic selectivity ogive to data was examined by plotting residuals and weighed residuals from the curve against length. Then, eye fitting was carried out by taking weighed residuals into account (Fig. 7). The results showed that using the logistic selectivity ogive is quite reasonable for this set of data. Finally, in the last analysis, all combinations of the one codend and one cover basket were taken as representative of the haul. Then for L50s, variations due to the changes in the codend from haul to haul and variations due to unequal mixing of the catch in each haul, were compared with sampling variations (Table 5 and 7 ).
Benzer Tezler
- Estimation of uncertainty of individual steps in pesticide residue analysis
Pestisit analiz aşamalarında belirsizliklerin tahminlenmesi
PERİHAN YOLCI ÖMEROĞLU
Doktora
İngilizce
2010
Gıda Mühendisliğiİstanbul Teknik ÜniversitesiGıda Mühendisliği Ana Bilim Dalı
PROF. DR. ARPAD AMBRUS
PROF. DR. DİLEK BOYACIOĞLU
- Demiryolu ağında trafik sayımlarından O-D matrisi tahmini
Başlık çevirisi yok
ZEYNEP AĞCI
Yüksek Lisans
Türkçe
1998
İnşaat Mühendisliğiİstanbul Teknik ÜniversitesiUlaştırma Ana Bilim Dalı
PROF. DR. HALUK GERÇEK
- Örme kumaş konfeksiyon işletmelerinde karşılaşılan kalite problemleri ve çözüm önerileri
Summary quality problems and solutions of knitted fabric clothing companbes
GÖKHAN OĞUZ
Yüksek Lisans
Türkçe
1997
Tekstil ve Tekstil Mühendisliğiİstanbul Teknik ÜniversitesiTekstil Mühendisliği Ana Bilim Dalı
YRD. DOÇ. DR. FATMA KALAOĞLU
- Aktif tüm-geçiren anahtarlı kapasite filtrelerinin kaskad kafes yapılarla gerçeklenmesi
Cascaded lattice realization of active all-pass switched capacitor filters
DOĞAN ALKAN
Yüksek Lisans
Türkçe
1991
Elektrik ve Elektronik Mühendisliğiİstanbul Teknik ÜniversitesiPROF.DR. CEVDET ACAR
- Küçük veri setleri için derin öğrenme
Deep learning for small datasets
TUNÇ GÜLTEKİN
Doktora
Türkçe
2020
Bilgisayar Mühendisliği Bilimleri-Bilgisayar ve KontrolEge ÜniversitesiBilgisayar Mühendisliği Ana Bilim Dalı
PROF. DR. AYBARS UĞUR