Taşkızak tersanesi

Taha Toros Arşivi, Dosya No: 60-DenizyollarıUnutma İstanbul projesi İstanbul Kalkınma Ajansı'nın 2016 yılı "Yenilikçi ve Yaratıcı İstanbul Mali Destek Programı" kapsamında desteklenmiştir. Proje No: TR10/16/YNY/010

Palynomorphs of brackish and marine species in cores from the freshwater Lake Sapanca, NW Turkey

Lake Sapanca, which is located on the Sakarya–Sapanca–İzmit corridor in NW Turkey, is a freshwater lake with numerous fish farms in its catchment. Palynological analyses including non-pollen palynomorphs of a short (38.5 cm) and a longer sediment core (586 cm), taken in the centre of the lake and dated in previous investigations, revealed the presence of brackish and marine palynomorphs. The longer sediment sequence shows the occurrence of Brigantedinium sp., Impagidinium caspienense and Spiniferites cruciformis from the base of the core at c. AD 580 years up to 300 cm depth at shortly after c. AD 910. A similar assemblage, but this time with the additional presence of dinoflagellate thecae and the acritarch, Radiosperma corbiferum, was found in the recent core, especially from AD 1986 until the present. Past connections between the Gulf of İzmit and the Black Sea, via the River Sakarya and Lake Sapanca, could be the origin of these two microfossil assemblages. Accidental re-introduction via fish translocation since the Roman times may have been a additional mechanism. The consequences of the survival of brackish and marine forms in a freshwater lake are discussed in terms of wider euryhalinity than has been suggested for those still poorly known organisms

Towards a 21st Century Mathematics Classroom: Investigating the Effects of the Problem-Solving Approach Among Tertiary Education Students

The development of 21st-century skills that are deemed necessary for learners to excel in a knowledge-based and highly globalized society is at the core of today’s education system. Towards this end, classroom practices focus on the delivery of instruction using various innovative instructional methodologies. One of the strategies used in Mathematics is the problem- solving approach. The problem-solving approach emphasizes that important mathematics concepts and procedures can be best taught through problem-solving tasks or activities, which engage students in thinking about the important mathematical concepts and skills they need to learn. This study utilized the problem-solving approach as supported by various collaborative strategies as an instructional intervention in teaching mathematics to first year college students and investigated its effects on the enhancement of their performance in and attitude towards College Algebra. The pretest-posttest control group design using two matched groups of respondents based on their intelligence quotient scores and mathematics test scores in the University Admission Test was utilized. Ten problem-solving tasks involving routine, non-routine, and real problems were developed and provided to the experimental group. On the other hand, the conventional approach in teaching and learning was employed in the control group. Necessary data to fulfill the objectives of the study were gathered through the attitude scale questionnaire and the researcher-made test and were analyzed using appropriate statistical tools. The results showed that the experimental group outperformed the control group on the bases of their posttest and mean gain scores. The experimental group also posted significant enhancement of their attitude towards college Algebra. Thus, the problem-solving approach, when applied to classroom instruction, can significantly improve students’ cognitive and affective attributes in mathematics, hence indicating the effectiveness of the approach in teaching mathematics

A mesocosm experiment investigating the effects of substratum quality and wave exposure on the survival of fish eggs

In a mesocosm experiment, the attachment of bream (Abramis brama) eggs to spawning substrata with and without periphytic biofilm coverage and their subsequent survival with and without low-intensity wave exposure were investigated. Egg attachment was reduced by 73% on spawning substrata with a natural periphytic biofilm, compared to clean substrata. Overall, this initial difference in egg numbers persisted until hatching. The difference in egg numbers was even increased in the wave treatment, while it was reduced in the no-wave control treatment. Exposure to a low-intensity wave regime affected egg development between the two biofilm treatments differently. Waves enhanced egg survival on substrata without a biofilm but reduced the survival of eggs on substrata with biofilm coverage. In the treatment combining biofilm-covered substrata and waves, no attached eggs survived until hatching. In all treatments, more than 75% of the eggs became detached from the spawning substrata during the egg incubation period, an

Determination and classification of cutaneous innervation of the dorsum of the foot in foetal cadavers

Background: The aim of this study is to determine cutaneous innervation of the dorsum of the foot on foetal cadavers. Materials and methods: In this study. 200 limbs from 100 embalmed foetuses (54 males and 46 females) were studied in Anatomy Laboratory. Contributions of medial, lateral and intermediate dorsal cutaneous nerves (MDCN, LDCN and IDCN) of the foot were identified. Results: Cutaneous innervation of the dorsum of the foot was classified into five types. Type I (75%) where MDCN innervated medial border of the foot and second interdigital cleft; IDCN innervated third, fourth and fifth interdigital clefts; and LDCN innervated the lateral border of the foot. Type II (21%) where MDCN innervated medial border of the foot, second and third interdigital clefts; IDCN innervated fourth and fifth interdigital clefts; and LDCN innervated the lateral border of the foot. Type III (1.5%) where saphenous nerve innervated medial border of the foot; MDCN innervated second and third interdigital clefts; IDCN innervated fourth and fifth interdigital clefts; and LDCN innervated the lateral border of the foot. Type IV (1.5%) was similar to type I, with an extra connection between the MDCN and IDCN on the dorsum of the foot. Type V (1%) where superficial fibular nerve innervated medial border of the foot, and second, third and fourth interdigital clefts; and sural nerve innervated fifth interdigital cleft andlateral border of the foot. Conclusions: The present study provides a new classification for the cutaneous innervation of the dorsum of the foot

Life history characteristics of a potential invasive Ponto-Caspian goby, Neogobius fluviatilis in natural lakes from its native range (Black Sea region of Turkey)

To fill the gap in and provide baseline knowledge for developing increased understandings of the factors driving the invasiveness of the Ponto-Caspian gobiid Neogobius fluviatilis, their life history traits (as somatic growth and reproduction) were studied in three natural freshwater lakes in its native range. These populations were characterised by slow somatic growth rates, being the slowest reported across all of their native and non-native ranges. Ages were recorded to seven years old. Across the three lakes, there was considerable variability in their sex ratios and reproductive traits (including length at maturity and fecundity at length and age), revealing considerable inter-population variability. These data thus suggest N. fluviatilis has considerable plasticity in the expression of their life history traits, with this plasticity argued as a key factor in facilitating their ability to establish and invade new waters following introductions

Financial literacy of secondary school teachers in the Department of Education–Division of La Union

Understanding the financial literacy of public secondary teachers is vital in promoting financial well-being for both educators and students. Using an adapted questionnaire as the main data-gathering tool, this descriptive study investigated the extent of financial literacy of public secondary teachers from a municipality in the Philippines across various aspects like knowledge, management, credit, savings, investments, and challenges they encountered. The results revealed that teachers often face difficulties and constraints with financial management, budgeting, and investing. The teachers indicated a low level of financial literacy due to their limited understanding of and ineffective strategies in utilizing various financial skills and concepts

The Role of Working Abroad as a Teacher on Professional Development

International experience has been considered as a good opportunity for teachers to develop their professional development. Teachers while working abroad experience new teaching styles, curriculum, lesson plans, and lesson materials. Upon return home they implement them into their circumstances. This study investigates the role of overseas experience in professional development of teachers. 55 teachers who had at least a five-year international experience had a questionnaire and it was found that overseas experience deeply influences professional development of teachers

Challenge of design aesthetic dimension

21.yy'ın imgeye dayalı ve kar marjını yükseltmeye odaklı kentsel gelişimleri tarihin başından beri halkın kullanımına açık okmuş ve zaman zaman kamusal mekân olma özelliği taşımış çeşitli ölçekteki kentsel alanları yok ederek, yıkarak, küçülterek gelişmekledir. Bu durumda meydanların halka yönelik hizmet alanları niteliğini yeniden gündeme getirip, korumak ve geliştirmek çevre tasarımından sorumlu disiplinlere düşmektedir. Bu tez gerek sosyal gerekse estetik yönleri ile meydanları konu edinmektedir. Dünyada gerçekleşmiş başarılı meydanlar ve konuda üretilmiş bilgilerden bir bakış açısı belirlenerek ve aynı anda estetiğin de kullanımı etkilenen bir özellik olduğuna vurgu yapılarak çeşitli meydanlar üzerinden bu ölçütler denetlenerek bir ölçütler dizisi oluşturulmuş ve bir örnek alanda sınanmıştır. Sultanahmet örnek alanında yapılan çalışmalarla kullanım yoğunluğu ve arzu edilebilirlik dışında meydanın fiziksel bileşenlerinin de üzerinde durulmuştur. Varılan sonuç odur ki her ne kadar tarihi atmosfer kullanım yoğunluğunu arttıran en önemli öge ise de kullanıcılar meydan kaplamasından sınır belirleyicilerine kadar meydan özelliklerinin her birinin önemine estetik bağlamda değinmiştir. Sonuç, kentsel sosyal mekânların bileşen ve ögelerinin estetiği de genel anlam ve tasarım ölçütleri kadar önemlidir. Anahtar Kelimeler : Meydan, Kamusal Alan, Estetik, Tasarım.The image-based and profit oriented urban approaches of the 21st century develop by annihilating, disturbing and negating the public common places of the cities. Under these circumstances it is obviously significant to bring to the agenda of the environmental design disciplines, the qualities of such spaces in order to enhance the functions and aesthetics of such spaces. Therefore this thesis embarks on social and aesthetic issues of the urban plazas. It studies diligently the successful plazas and squares from all over the world and determines the criteria for designing successful plazas and urban squares based on investigations and researches of valuable scholars. In this respect aesthetics is underlined as also a functional element which deserves special attention. At the second step the paradigms determined as a valuable set of criteria in investigating the present examples are adopted to study the Sultanahmet Square. Here in addition to the criteria for intense use and aesthetics, the elements and components of the plaza are also investigated. Therefore this thesis dwelled upon both the social and the aesthetic aspects of Sultanahmet square. The empirical research run in the case study clearly demonstrated that as well as the historical heritage of the Sultanahmet Plaza, the aesthetics of the elements and components are also important. Key words : Plaza, Pupose area, Aestetic, Desig