İstanbul Fotoğraf Evi nasıl açıldı?

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

Investigating Epipolar Plane Image Representations for Objective Quality Evaluation of Light Field Images

International audienceWith the ongoing advances in Light Field(LF) technology, research in LF acquisition, compression, processing has gained momentum. This increased the need for objective quality evaluation of LF content. Many processing algorithms are still optimized against peak signal to noise ratio(PSNR). Lately, several attempts have been made to improve objective quality evaluation such as extending 2D metrics to 4D LF domain. However, there is still a great room for improvement. In this paper, we experiment with existing 2D image quality metrics on the Epipolar Plane Image representations of LF content to reveal characteristics of LF related distortions. We discuss the challenges and suggest possible directions towards a LF image quality evaluation on EPI representations

Bazı Organik Materyallerin Fındıkta Verim ve Kalite Üzerine Etkileri

Bu araştırma organik fındık üretim olanaklarının araştırılması amacıyla 2002–2006 yılları arasında Giresun’da yürütülmüştür. Tombul çeşidinde kontrol ve konvansiyonel üretimin yanında çiftlik gübresi ve zuruf kompostu uygulamaları denenmiştir. Ayrıca yazıcı böcekler ve fındık kurduna karşı organik uygulamalar yapılmıştır. Çalışma sonucunda; gübre dozları ile verim, meyve ağırlığı, iç ağırlığı, kabuk kalınlığı, randıman, beyazlama oranı, yağ oranı ve protein oranı arasındaki ilişkiler istatistikî olarak önemli bulunmamıştır. Bu durum gübre dozlarının meyve kalitesine etkisinde uygun doz seçimini zorlaştırmıştır. Ancak verim ve meyve kalite değerleri bakımından konvansiyonel uygulamayla birbirine yakınlık gösteren çiftlik gübresinin 25kg/bitki ve zuruf kompostu uygulamasının 50kg/bitki dozları önerilebilir bulunmuştur. Diğer yandan fındık ana zararlılarından olan yazıcı böceklerle mücadelede biyoteknik mücadelenin kültürel uygulamalarla beraber yürütülmesinin zarar yoğunluğunu düşürdüğü tespit edilmiştir. Ancak bu uygulamaların tek başına yeterli olmadığı ayrıca, Temmuz-Ağustos aylarındaki aşırı yağışlarından dolayı dalkıran zarar yoğunluğunun organik yetiştiricilikte arttığı belirlenmiştir

The best stain for morphological study of human seminal fluid's smears.

Objectives:There is a high need for proper evaluation of the morphological features of human sperms. The importance of this lies in the field of andrology, male fertility and in vitro fertilization. The wet smears can give rough clue about the shape of the sperms, but it is neither accurate nor reproducible. This study aimed to determine the best stain which can be used for seminal fluid cytology.Methods: This study was conducted in Port Sudan, Red Sea State, Sudan in the period from October 2006 to September 2007. The total number of patients was 50. Samples which were collected from normospermic patients (NSP) were prepared by direct smear technique. Samples which were collected from oligospermic patients (OSP) and azoospermic patients (ASP) were prepared by direct smear technique and also by indirect smear techniques (concentration method). Smear samples were stained by freshly prepared Harris's Haematoxylin, Papanicolaou stain, May-Grunwald Giemsa stains (MGG), supra vital stain, Giemsa stain and leishman's stain.Results: In this study, the best stain was Harris's Haematoxylin (80% excellent for the head of sperm, 70% good for the neck, 59% excellent for the tail, 42% very good for cells in background). Harris's stainwas followed by papanicolaou stain and the third best stain was supra vital stain. MGG was better than Giemsa in staining of semen smears (75% good versus 25% good) in overall performance. The worst stain was Leishman's stain.Conclusion: Stained smears must be used for the morphological study of semen samples. Harris's Haematoxylin is the best stain for semen cytological features. Stains which used for the semen samples should befreshly prepared

Fındık Kurdu [Balaninus(= Curculio) Nucum L. Colertera: Curculionidae)] ’na Karşı Organik Kökenli Preparatlarla Mücadele İmkanlarının Araştırılması

Bu proje 2003- 2004 yıllarında Giresun Fındık Araştırma Enstitüsü deneme bahçesinde yürütülmüştür. Organik kökenli preparatların (Neemazal T/S, Laser, Kül+kükürt+kireç) fındığın ana zararlısı olan Fındık Kurduna karşı etkinliği araştırılmıştır. Deneme 2003 yılında kafes ve parsel, 2004 yılında ise parsel denemesi şeklinde yürütülmüştür Kafes denemesi sonucunda Laser’in 20ml-30ml-40ml dozları %100 etkili bulunmuştur. Nemazal T/S ise ilaçlamadan 1gün ve 3 gün sonra 200-300-400ml/ 100lt suya dozunun etkili olmadığı tespit edilmiştir. Fakat 7.günden ve 10. günden sonra Neemazal T/S dozlarının etkili olduğu belirlenmiştir. Kül+kükürt+kireç karışımının %1 etkili olduğu tespit edilmiştir. Kafes denemesi sonucunda etkili olan preparatlar fındık meyvesinin 2-3 ml olduğu dönemde parsel denemesine alınmıştır. Parsel denemesi sonucunda Laser’in %100, Kül+kükürt+kireç karışımının %73, Neemazal’ın ise %55-91 etkili olduğu tespit edilmiştir. Denemelerde Neemazal T/S nin 300 ml dozunda fitotoksite gözlenmiş, diger uygulamalarda, fitotoksisiteye raslanılmamıştır. Faydalılar yönünden yapılan gözlemlerde herhanki bir olumsuz yan etki gözlenmemiştir. Hasada yakın dönemde her ocaktan 20 çotanaklı meyve toplanıp kontrol edilmiştir. Kontrol edilen meyvelerde delikli meyve, sarı karamuk, kara karamuk,sağlam meyveler sayılmış ve yüzdeleri hesaplanmıştır. Uygulamalar sonucunda Laser’de %68-72, Neemazal’da T/S %74-87, Kül karışımında %72 oranında sağlam meyve tespit edilmiştir. 2004 yılı parsel denemesi sonuçlarına göre Laser %100, kül karışımı ise %73.4 oranında fındık kurduna karşı etkili olduğu gözlenmiştir. Normal fındık hasadından bir hafta önce (09.08.2004 Sahil kol fındık hasat tarihi, 03.08.2004 tarihinde deneme hasadı yapılmıştır). Delikli fındık, sarı karamuk ,kara karamuk ve sağlam meyve oranına bakılmış, sağlam meyvenin Laser %79-85, kül karışımında %69 oranında olduğu tespit edilmiştir

Does collimation affect patient dose in antero-posterior thoraco-lumbar spine?

BACKGROUND: The purpose of this study is to determine the effect of collimation on the lifetime attributable risk (LAR) of cancer incidence in all body organs (effective risk) in patients undergoing antero-posterior (AP) examinations of the spine. This is of particular importance for patients suffering from scoliosis as in their case regular repeat examinations are required and also because such patients are usually young and more susceptible to the effects of ionising radiation than are older patients. METHOD: High sensitivity thermo-luminescent dosimeters (TLDs) were used to measure radiation dose to all organs of an adult male dosimetry phantom, positioned for an AP projection of the thoraco-lumbar spine. Exposures were made, first applying tight collimation and then subsequently with loose collimation, using the same acquisition factors. In each case, the individual TLDs were measured to determine the local absorbed dose and those representing each organ averaged to calculate organ dose. This information was then used to calculate the effective risk of cancer incidence for each decade of life from 20 to 80, and to compare the likelihood of cancer incidence when using tight and loose collimation. RESULTS: The calculated figures for effective risk of cancer incidence suggest that the risk when using loose collimation compared to the use of tight collimation is over three times as high and this is the case across all age decades from 20 to 80. CONCLUSION: Tight collimation can greatly reduce radiation dose and risk of cancer incidence. However collimation in scoliotic patients can be necessarily limited

A Goal-based Framework for Contextual Requirements Modeling and Analysis

Requirements Engineering (RE) research often ignores, or presumes a uniform nature of the context in which the system operates. This assumption is no longer valid in emerging computing paradigms, such as ambient, pervasive and ubiquitous computing, where it is essential to monitor and adapt to an inherently varying context. Besides influencing the software, context may influence stakeholders' goals and their choices to meet them. In this paper, we propose a goal-oriented RE modeling and reasoning framework for systems operating in varying contexts. We introduce contextual goal models to relate goals and contexts; context analysis to refine contexts and identify ways to verify them; reasoning techniques to derive requirements reflecting the context and users priorities at runtime; and finally, design time reasoning techniques to derive requirements for a system to be developed at minimum cost and valid in all considered contexts. We illustrate and evaluate our approach through a case study about a museum-guide mobile information system

The impact of stigma and discrimination on psychological distress in people with intellectual disability and access to health services: a mixed methods approach

Background Self stigma has been associated with psychological distress, poorer adherence to treatment and is a barrier to help seeking behaviour in people with mental illness. Little is known about the impact of stigma on people with intellectual disability (ID). In addition, people with ID are more likely to experience disparities in accessing health care, possibly as a result of discrimination and inadequate knowledge of clinicians about the health needs of this vulnerable group. Aims 1. To examine the association between self reported stigma and psychological distress, quality of life, treatment adherence and service use in people with ID 2. To explore experiences of health services by people with ID, particularly in relation to whether people have experienced discrimination from health services. Methods 1. A cross-sectional study of 229 participants with mild to moderate ID, from 12 centres, was conducted to address the first aim. Data was analysed using a random effects regression model. 2. A qualitative study using semi-structured interviews, with 15 service use and carer dyads (29 participants), was used to examine the second aim. Data was analysed using thematic analysis. Results 1. Self reported stigma was positively associated with psychological distress and higher service use, and negatively associated with quality of life. There was some evidence that self reported stigma was associated with lower treatment adherence. Psychological distress mediated these relationships. 2. Half the participants had reported experiencing discrimination from health services. Accounts included negative staff attitudes and behaviour, and failure of services to make reasonable adjustments. Implications There is an urgent need to develop interventions that tackle self reported stigma and psychological distress in people with ID. Health services need to ensure that reasonable adjustments are made in order to reduce both direct and indirect discrimination of people with ID

Resistance to ondansetron: Role of pharmacogenetics in post-operative nausea and vomiting

Post-operative nausea and vomiting is the most annoying and at the same time a dangerous side effect of general anaesthesia. Ondansetron is a routinely used anti emetic drug which is being administered by the trial and error principle. Though it did revolutionized the management of this condition but by and large failed to completely eliminate the problem. Recently an important factor possibly elucidating this failure is said to be the differing expression of genes controlling proteins that are involved in transport and receptors related to this drug. Quite surprisingly these transporter and receptor pathways have been found to be polymorphic and at the same time shown to be related to efficacy of the drug. The differentiation between those responding to treatment and those not responding may pave a way to individualize treatment for emesis to a greater extent. This review highlights the pharmacogenetics related to this commonly used anti-emetic drug in anaesthesia. It is visualized as a promising way to achieve the target of individualized therapy. It seems obvious that pharmacogenetics will become an important field of anaesthesia research in the future.Keywords: 5-Hydroxytryptamine type 3 receptor antagonists; Ondansetron; Post-operative nausea and vomiting; Polymorphism; Pharmacogenetic