Relevant bibliographies by topics / Fly eye

Academic literature on the topic 'Fly eye'

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Published: 25 May 2024

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Journal articles on the topic "Fly eye"

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Gaspar, Pedro, Isabel Almudi, Maria D. S. Nunes, and Alistair P. McGregor. "Human eye conditions: insights from the fly eye." Human Genetics 138, no. 8-9 (November 1, 2018): 973–91. http://dx.doi.org/10.1007/s00439-018-1948-2.

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Tai, Yuha, and Tomoyuki Miyamoto. "Experimental Characterization of High Tolerance to Beam Irradiation Conditions of Light Beam Power Receiving Module for Optical Wireless Power Transmission Equipped with a Fly-Eye Lens System." Energies 15, no. 19 (October 8, 2022): 7388. http://dx.doi.org/10.3390/en15197388.

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This paper is an experimental characterization of a light-receiving module containing a fly-eye lens system with high tolerance to beam irradiation conditions. The fly-eye lens system, which is tolerant to fluctuations in beam shape, beam size, number of beams, beam incident position, and beam incident direction, was proposed, a light receiver module with a fly-eye lens system was constructed, and its characteristics were evaluated. The effect of the beam size on the fly-eye lens system was evaluated and the tolerance to misalignment of beam incident position was measured. When a GaAs solar cell was irradiated with a laser beam of 450 nm wavelength and 6 W light output through a 90 cm long water tank with tap water, a maximum output of 0.755 W was obtained as underwater OWPT. In addition, a fly-eye lens system with mirrors applied to four surfaces was proposed and fabricated as a light-receiving side module that can receive high incident angles from any direction of up, down, left, and right and its effectiveness was clarified through experiments.
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Walther, Rhian F., and Franck Pichaud. "Some assembly required: building the fly eye for motion detection and colour discrimination." Biochemist 42, no. 5 (October 15, 2020): 58–63. http://dx.doi.org/10.1042/bio20200066.

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Among the many eyes that have evolved on Earth, the insect compound eye is the most abundant. Its crystal-like lattice structure is a feat of engineering that has evolved over millions of years, and is exquisitely adapted to detect moving objects and discriminate colours. This enables many behaviours, including foraging for food, finding a mate and avoiding predators. Our understanding of how the compound eye is built and works has been greatly expanded by studying the humble fruit fly, Drosophila melanogaster. The simple outward appearance of the fly eye belies a host of sophisticated features. Through the precise arrangement of photosensitive cells in the retina and their connections to the brain, the fly eye packs an astonishing amount of hardware into a very tiny volume. In this primer, we introduce the molecular pathways that underpin the building and inner workings of the fly eye.
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Davies, Kevin. "In the eye of the fly." Nature 354, no. 6352 (December 1991): 356. http://dx.doi.org/10.1038/354356b0.

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Finlay, R. D. "Preventable eye injuries while fly fishing." Eye 28, no. 6 (March 14, 2014): 775. http://dx.doi.org/10.1038/eye.2014.57.

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Singh, Amit. "Eye development at the Houston "Fly Meeting"." International Journal of Developmental Biology 50, no. 8 (2006): 659–63. http://dx.doi.org/10.1387/ijdb.062186as.

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Chen, Rui, and Graeme Mardon. "Keeping an eye on the fly genome." Developmental Biology 282, no. 2 (June 2005): 285–93. http://dx.doi.org/10.1016/j.ydbio.2005.04.015.

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Kumar, Justin P. "The fly eye: Through the looking glass." Developmental Dynamics 247, no. 1 (October 23, 2017): 111–23. http://dx.doi.org/10.1002/dvdy.24585.

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Zhu, Jinjin, Sneha Palliyil, Chen Ran, and Justin P. Kumar. "Drosophila Pax6 promotes development of the entire eye-antennal disc, thereby ensuring proper adult head formation." Proceedings of the National Academy of Sciences 114, no. 23 (June 5, 2017): 5846–53. http://dx.doi.org/10.1073/pnas.1610614114.

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Paired box 6 (Pax6) is considered to be the master control gene for eye development in all seeing animals studied so far. In vertebrates, it is required not only for lens/retina formation but also for the development of the CNS, olfactory system, and pancreas. Although Pax6 plays important roles in cell differentiation, proliferation, and patterning during the development of these systems, the underlying mechanism remains poorly understood. In the fruit fly, Drosophila melanogaster, Pax6 also functions in a range of tissues, including the eye and brain. In this report, we describe the function of Pax6 in Drosophila eye-antennal disc development. Previous studies have suggested that the two fly Pax6 genes, eyeless (ey) and twin of eyeless (toy), initiate eye specification, whereas eyegone (eyg) and the Notch (N) pathway independently regulate cell proliferation. Here, we show that Pax6 controls eye progenitor cell survival and proliferation through the activation of teashirt (tsh) and eyg, thereby indicating that Pax6 initiates both eye specification and proliferation. Although simultaneous loss of ey and toy during early eye-antennal disc development disrupts the development of all head structures derived from the eye-antennal disc, overexpression of N or tsh in the absence of Pax6 rescues only antennal and head epidermis development. Furthermore, overexpression of tsh induces a homeotic transformation of the fly head into thoracic structures. Taking these data together, we demonstrate that Pax6 promotes development of the entire eye-antennal disc and that the retinal determination network works to repress alternative tissue fates, which ensures proper development of adult head structures.
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Sadananda, Ranjitha C., Reshma Ravindra, and Rashmi G. "Ophthalmomyiasis Externa Presenting As Red Eye." JOURNAL OF CLINICAL AND BIOMEDICAL SCIENCES 10, no. 2 (June 15, 2020): 69–71. http://dx.doi.org/10.58739/jcbs/v10i2.2.

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Ophthalmomyiasis is the infestation of the eye with fly larva. It is commonly found in unhygienic areas and poor socioeconomic conditions. Internal Ophthalmomyiasis can be vision threatening leading to blindness, therefore early diagnosis and prompt treatment is required. We present a case of a 21year old male patient who presented with pain, redness and foreign body of left eye. Larva was observed on slit lamp examination. On ex-tracting them and examining, it was found to be Oestrus Ovis. The patient was treated with lubricating drops, mild topical steroid, topical antibiotics and topical betadine drops. The patient responded well to the treatment. Keywords : ophthalmomyiasis, oestrus ovis, sheep nasal botfly
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Dissertations / Theses on the topic "Fly eye"

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Guo, Yuting. "The fly eye as a model system to study the molecular basis of developmental speed." Electronic Thesis or Diss., Sorbonne université, 2023. http://www.theses.fr/2023SORUS126.

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Au cours du développement, l’expression rapide des gènes, la division cellulaire et la différenciation sont essentielles à la formation et au fonctionnement appropriés des tissus et des organismes. Cependant, ce qui donne le tempo des événements de développement ou ce qui régule la vitesse du développement est moins connu. Pour comprendre la base moléculaire de la régulation de la vitesse de développement, nous proposons d’utiliser l’œil de mouche en développement comme nouveau système modèle pour l’étude génétique. Dans le troisième stade larvaire de la drosophile, un front de différenciation balaie du disque imaginal postérieur à antérieur de l’œil, formant des ommatidies rangée par rangée derrière lui. Cette caractéristique rend la progression du front facile à observer. Le mécanisme derrière le mouvement de l’avant est clair, avec le front se déplaçant à environ 1 rangée d’ommatidies toutes les 2 heures. Les puissants outils génétiques utilisés pour étudier la drosophile peuvent nous aider à répondre aux questions qui nous intéressent. À l’aide de disques imaginaux oculaires de drosophile, nous avons d’abord effectué un criblage de l’ARNi pour les gènes nécessaires à la bonne progression du front de différenciation. Nous avons utilisé le système mirr-GAL4/UAS pour introduire des perturbations génétiques dans le compartiment dorsal du disque imaginal de l’œil, le compartiment ventral servant de contrôle interne puisqu’il n’a aucune expression de l’élément UAS. La comparaison des nombres de rangées ommatidiales dans les deux compartiments après perturbation dorsale a permis de découvrir les gènes qui régulent la progression du front de différenciation. Les gènes candidats ont été sélectionnés à partir de gènes métaboliques précédemment criblés dans l’œil adulte, d’autres gènes du métabolisme énergétique / NAD, des gènes du métabolisme ARN / protéine et des gènes connus pour être impliqués dans la progression du front. Notre crible a identifié des gènes d’un petit nombre de voies métaboliques, y compris la chaîne de transport d’électrons et la voie de signalisation de l’insuline. Deuxièmement, pour valider si ces perturbations ralentissent la vitesse de progression du front ou retardent le début de la progression du front, nous avons généré un nouvel outil génétique pour mesurer la vitesse de progression in vivo. À l’aide de cet outil, nous avons mesuré la vitesse de progression du front de différenciation à 18°C et 25°C, et avec différentes perturbations génétiques dorsales. Les résultats ont montré que les gènes perturbateurs de la chaîne de transport d’électrons ou de la voie des récepteurs de l’insuline ralentissent la vitesse de progression du front de différenciation. Enfin, comprendre comment ces perturbations génétiques entraînent une modification de la vitesse de progression du front de différenciation reste une question importante mais largement non résolue. Une hypothèse est que les perturbations génétiques déclenchent des changements vers un état métabolique associé à une vitesse de développement plus lente. Conformément à cette hypothèse, nous avons constaté que l’ARNm Ldh s’accumulait dans les cellules indifférenciées (mais pas dans les cellules différenciées) lors de la perturbation de la chaîne de transport d’électrons, suggérant une glycolyse accrue. La deuxième hypothèse est que différentes perturbations génétiques entraînent des états métaboliques différents. Conformément à cela, la réduction de la signalisation de l’insuline, qui a également entraîné une vitesse de développement lente, n’a pas induit des niveaux plus élevés d’expression de Ldh. Dans les travaux futurs, différents capteurs métaboliques fluorescents qui ont été utilisés chez la drosophile pourraient nous aider à découvrir l’état métabolique à chaque perturbation et nous aider à comprendre si différents états métaboliques pourraient lire différentes vitesses de développement. Il serait utile d’étudier si les gènes que nous avons [...]
During development, timely gene expression, cell division and differentiation are essential for tissue and organism proper functioning and formation. But what sets up the tempo of developmental events, or what regulates the speed of development are less known. To understand the molecular basis of regulation of developmental speed, here, we propose the developing fly eye as a new model system to genetically study developmental speed.In the 3rd larval instar of Drosophila, there is a differentiation front sweeps from posterior to the anterior of the eye imaginal disc, and the ommatidia are formed row by row behind the differentiation front. This character makes the progression of the front easy to be observed. The mechanism of how this front move forward is clear, and the movement speed of the front is about 1 row of ommatidia every 2 hours. Many powerful genetic tools used to study Drosophila could also help us address the question which we are interested in.By using Drosophila eye imaginal discs, first, we performed an RNAi screen for genes required for the differentiation front to travel at proper speed. As mirr only express in the dorsal compartment of the eye imaginal disc, we were using mirr-GAL4/UAS system to introduce the genetic perturbations in the dorsal compartment of the eye imaginal disc, and the ventral compartment which has no expression of UAS element could be considered as the internal control. After dorsal perturbation, comparing the ommatidia row numbers in both compartments will uncover the genes regulate the differentiation front progression speed. The candidate genes are selecting from metabolic genes previously screened in the adult eye, other energy/NAD metabolism genes, some RNA/protein metabolism genes, and genes known to be involved in the progression of the front, etc. Our screen identified genes from a small number of metabolic pathways, including the Electron Transport Chain and the Insulin signaling pathway.Second, to validate whether these perturbations slow down the speed of front progression, or delay the onset of the front progression, we generated a new genetic tool to measure the speed of progression of the differentiation front in vivo. By using this tool, we measured the differentiation front progression speed at 18°C and 25°C, and measured the speed of the front with different dorsal genetic perturbations. The results showed that perturbing the genes of Electron Transport Chain or Insulin receptor pathway slow down the speed of front progression.Finally, understanding how these genetic perturbations result in altered speed of progression of the differentiation remains an important, yet largely unsolved issue. One hypothesis is that genetic perturbations trigger changes toward a metabolic state associated with a slower developmental speed. Consistent with this hypothesis, we found that ldh mRNA accumulated in undifferentiated cells (but not differentiated cells) upon Electron Transport Chain perturbation, suggestive of increased glycolysis. The second hypothesis is that different genetic perturbations result in different metabolic states. Consistent with this, reducing Insulin signaling which also resulted in slow developmental speed, did not induce higher levels of ldh gene expression.In the future work, different fluorescent metabolic sensors which have been used in Drosophila may help us uncover the metabolic state upon each perturbations, and help us understand whether different metabolic state might readout different developmental speed. And whether these candidate genes that we screened were shown to slow down the speed of differentiation front progression also regulate the speed of other developmental events is worth examining in the future
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Grant, Claire Anne. "The evolution of multiple mating in the stalk-eyed fly, Cyrtodiopsis dalmanni." Thesis, University College London (University of London), 2003. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.399519.

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Rogers, David William. "Sexual selection and male reproductive quality in the stalk-eyed fly Cyrtodiopsis dalmanni." Thesis, University College London (University of London), 2005. http://discovery.ucl.ac.uk/1446550/.

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It is generally assumed that the reproductive success of both males and females is not limited by the availability of ejaculates. However, when male ejaculate production is physiologically constrained, the maintenance of high fertility can be an important determinant of fitness. Under the phenotype-linked fertility hypothesis, females can maximise their fertility by choosing mates on the basis of external phenotypic indicators (exaggerated sexual ornaments or displays) of male reproductive quality. I test the phenotype-linked fertility hypothesis in the stalk-eyed fly Cyrtodiopsis dalmanni, a species characterised by sexual dimorphism in the length of the eyestalks that project laterally from the head (eyespan). I demonstrate that females prefer large eyespan males as mates and exhibit higher fertility when housed with large eyespan males than when housed with small eyespan males. I also show that male eyespan predicts the growth rates and final sizes of the accessory glands and testes of males raised under different levels of nutritional stress. Thus male eyespan is a reliable indicator of male reproductive quality, and female preference for this trait can directly increase female fitness through fertility assurance. The higher fertility of large eyespan males is associated with the ability to copulate at a higher frequency rather than greater success on a per-mating basis. Using artificial selection experiments and behavioural observations, I provide evidence that male mating frequency is physiologically constrained by the size of the accessory glands. As eyespan reflects male accessory gland size, females can improve their chances of obtaining an ejaculate by choosing mates with large eyespan. Moreover, I show that males allocate larger ejaculates to females that offer a greater number of fertilisation opportunities. Based on my results, I have proposed a physiological mechanism for the signalling of male mating frequency by male eyespan mediated by circulating levels of juvenile hormone.
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Warren, I. A. "Transgenic and histological approaches to investigating the development of the stalk-eyed fly, Teleopsis dalmanni." Thesis, University College London (University of London), 2009. http://discovery.ucl.ac.uk/18612/.

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Stalk-eyed flies of the family Diopsidae have their eyes laterally displaced on the end of head extensions called “eye-stalks”. Diopsids vary in their degree of sexual dimorphism for eyespan (distance between the eyes). In some dimorphic species it has been well established that females preferentially mate with males possessing exaggerated eyespan. With over 150 members, the family Diopsidae is an ideal model system for analysing the evolution and development of exaggerated sexual traits. Progress towards understanding the mechanisms underlying the development of exaggerated eyespan has been significantly hampered by the lack of modern molecular genetic technology in stalk-eyed flies. I have developed a transgenic protocol in Teleopsis dalmanni, a highly dimorphic diopsid species. I selected and tested embryo microinjection procedures. I used excision assays to compare the activity of three potential transposable element vector systems. Minos and piggyBac demonstrated suitable activity in T. dalmanni embryos but mariner did not. Using Minos and the transgene construct Px3-eGFP, I successfully achieved stable germline transformation in T. dalmanni. A number of transgenic lines were created. In one, a single copy of the insertion was seen to segregate with the X chromosome. I used a histological approach to investigate the relative contributions of cell size and cell number to variation in eyespan. I compared estimates of cell size in the eye-stalks of newly eclosed flies among fully fed and nutritionally stressed individuals. For comparison, I assessed cell size in a non-sexually dimorphic organ, the wing. I found that variation in eyespan was explained, at least in part, by variation in cell size. No inherent difference in eye-stalk cell size was detected between the sexes. The implications of the cell size findings and of the future studies made possible by transgenic technology are discussed.
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Grimes, Leanne M. "Using fruit fly eyes as membrane protein factories : expression of rat P2X2 and pannexin-1 in Drosophila melanogaster." Thesis, Cardiff University, 2015. http://orca.cf.ac.uk/70779/.

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P2X receptors and pannexins (Panx) are eukaryotic ion channels that are implicated in a range of diseases and conditions including cancer, inflammation and pain sensation and as a result, are important therapeutic targets. Deducing their 3D-structures would enable the use of structure-based drug design to identify novel agonists or antagonists. However, solving eukaryotic membrane protein structures is a significant challenge due to the requirement for high yields of purified folded, functional protein, which are not readily obtainable with conventional over-expression systems. By using P2X receptors and pannexins as model ion channel targets, this thesis aims to test Drosophila melanogaster as a system for the over-expression and functional analysis of eukaryotic ion channels. A number of epitope-tagged P2X and Panx protein constructs were generated and first expressed in HEK-293 cells (rat P2X2-GFP, human P2X4-GFP, rat Panx1-GFP and human P2X4-int-CBD (chitin binding domain)) to allow their expression, glycosylation and oligomeric states to be investigated as markers of protein folding and quality. Subsequently, rat P2X2-GFP and rat Panx1-GFP constructs were successfully expressed in the photoreceptor cells of Drosophila melanogaster, where the photoreceptive membrane in the visual system is organised into a densely packed brush of microvilli, the rhabdomere. This system provides a large surface area of membrane for protein expression. Although the yields of purified protein were lower than expected, rat Panx1-GFP was successfully purified and used for low resolution structural studies with transmission electron microscopy. Rat P2X2-GFP was also expressed in the nervous system of Drosophila under control of a pan-neural, C155-Gal4 driver and was shown to be functional by measuring ATP-evoked action potentials using electrophysiological recordings of the Drosophila taste sensilla. This system was also used to test the activity of an adenosine nucleotide library of 80 compounds. Three nucleotides were identified that elicited responses similar to ATP; these were 2F-ATP, ATPαS and ATPγS.
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Meade, Lara. "Fitness consequences of sex-ratio meiotic drive and female multiple mating in a stalk-eyed fly, Teleopsis dalmanni." Thesis, University College London (University of London), 2018. http://discovery.ucl.ac.uk/10048699/.

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Meiotic drive genes are a class of segregation distorter that gain a transmission advantage in heterozygous males by causing degeneration of non-carrier sperm. This advantage must be balanced by fertility or viability costs if drive is to remain at stable frequencies in a population. A reduction in male fertility due to sperm destruction reduces the fitness of the rest of the genome, accordingly mechanisms to circumvent the effects of drive may evolve. Such adaptations will have implications for how likely it is that drive will persist. The primary theme of this thesis has been examining fertility consequences of meiotic drive in a Malaysian stalk-eyed fly, Teleopsis dalmanni. I demonstrate that drive carrier males are not sperm limited, despite the destruction of half their sperm. They produce ejaculates with sperm numbers equivalent to wildtype male ejaculates. Furthermore, drive males achieve this with greatly enlarged testes. However, resources are not unlimited; drive males also have reduced body size, and reduced accessory glands and eyespan for their body size. Accessory gland size limits male mating frequency, and male eyespan is a sexually selected trait used in female choice and male-male competition. I discuss how these patters fit with theoretical models that predict males should invest in producing an optimal ejaculate according to levels of expected sperm competition, even if they are low-fertility males. A second interrelated theme of this thesis has been to examine the benefits of polyandry, female mating with multiple males, using wild-caught individuals. Polyandry is widespread across many taxa and almost ubiquitous in insects. However, there is much debate around its proximate and ultimate causes. There are many costs associated with mating and so polyandry requires an adaptive explanation. I utilise data on wild-caught T. dalmanni to explore how natural variation amongst females and males influences fertility gains for females.
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Nalesso, Giulia. "Disponibilidad y riqueza léxica en un grupo de estudiantes universitarios italianos de ELE." Doctoral thesis, Università degli studi di Padova, 2019. http://hdl.handle.net/11577/3424862.

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Inserita negli ambiti della linguistica applicata e della didattica della lingua spagnola, la presente Tesi esamina la disponibilità e la ricchezza lessicale di un gruppo di studenti italiani di spagnolo LS a livello universitario. Partendo dai primi studi finalizzati all’elaborazione del Proyecto Panhispánico de Disponibilidad Léxica dedicati a ispanofoni nativi, dai progetti pionieristici di Carcedo (2000c) e Samper Hernández (2002) che si sono occupati di apprendenti non nativi di spagnolo ed infine dai contributi più recenti di Sánchez-Saus (2011), Hidalgo (2017b) e Del Barrio y Vann (2018), è stato elaborato un test che ha permesso di svolgere un’indagine linguistico-statistica trasversale e longitudinale del lessico disponibile del campione. Suddetto consisteva nella prova standardizzata di disponibilità lessicale, in cui si presentano alcuni stimoli semantici per attivare i vocaboli che i soggetti intervistati associano a tali input. Inoltre, nello stesso test è stata inserita un’ulteriore prova destinata alla misurazione e alla valutazione della ricchezza lessicale, dove era richiesta la stesura di un breve testo narrativo che è stato analizzato in base a indici standard (Read, 2000). L’esperimento, proponendosi come un progetto innovativo che tratta il complesso fenomeno della competenza lessicale, ha conciliato due metodologie complementari capaci di determinare il livello di apprendimento e la conoscenza del vocabolario spagnolo dei partecipanti. I risultati emersi dalle analisi quantitativa, qualitativa e comparativa dei dati hanno condotto a nuove ed interessanti riflessioni derivanti dall’unione della disponibilità e della ricchezza lessicale per la prima volta in un unico studio. In più, gli approcci trasversale e longitudinale hanno portato a rinnovare il modus operandi di ricerca applicato finora in questo ambito, improntato solamente su studi trasversali.
This thesis, framed within the areas of Applied Linguistics and Didactics of Spanish, investigates lexical availability and lexical richness in a group of Italian university students learning Spanish as a FL. The theoretical framework consists of Proyecto Panhispánico de Disponibilidad Léxica, involving native Spanish speakers, pioneering works of Carcedo (2000c) and Samper Hernández (2002) that dealt with non-native Spanish learners and the latest findings of Sánchez-Saus (2011), Hidalgo (2017b) and Del Barrio y Vann (2018). It was designed an associative test which allowed to conduct a linguistic-statistical survey on the available lexicon of informants through a cross-sectional and longitudinal analysis. This test focuses on the vocabulary produced by respondents when prompted with stimuli and collects their mental lexicon. In addition, it was included a further test for measuring and evaluating lexical richness, which required the writing of a short narrative text that was examined on the basis of standard indexes (Read, 2000). The experiment aims to be an innovative project which deals with the complex phenomenon of lexical competence, combining two complementary methodologies capable of ascertaining the participants’ language proficiency and knowledge of Spanish vocabulary. Results of the quantitative, qualitative and comparative analysis of data led to significant new considerations arising from the combination of lexical availability and lexical richness merged for the first time in a single study. Moreover, the transverse and longitudinal approaches brought about a renewal of the research method in this field, which so far was solely based on cross-sectional studies.
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Marti, Alexandra. ""Feedback" Correctif à l'écrit à travers l'étude comparative du FLE en Espagne et de l'ELE en France: processus d'enseignement, apprentissage et acquisition." Doctoral thesis, Universidad de Alicante, 2017. http://hdl.handle.net/10045/83069.

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Esta tesis, que quiere ser transdisciplinaria, combinando las ciencias del lenguaje, las ciencias de la educación y la sociolingüística, se centra en cuatro áreas principales: la política del plurilingüismo en las instituciones educativas, el aprendizaje y la adquisición de LE (el Francés Lengua Extranjera: FLE, y el Español Lengua Extranjera: ELE), el tratamiento del error y el feedback correctivo (FC) en la producción escrita, así como las pistas de optimización didáctica para promover la educación plurilingüe y el FC. Los resultados de este trabajo de investigación muestran que, a nivel nacional, el objetivo del plurilingüismo en las instituciones educativas está muy lejos de ser alcanzado en Francia y en España, como lo demuestra el análisis de las cifras y las estadísticas publicadas por los dos Ministerios de Educación en el año académico 2014-2015, dejando ver una situación poco ventajosa del francés en España y del español en Francia frente al dominio del inglés, aunque es innegable que el ELE presenta en este sentido mejores resultados que el FLE. A nivel local, es decir en el marco del aula, la investigación-acción realizada en clase de FLE y de ELE se ha centrado en el análisis de diferentes tipos de FC escrito (directo, indirecto, reformulativo, metalingüístico, electrónico y mixto) a través de un proceso en tres etapas: redacción / comparación con el FC / reescritura. Se trataba de descubrir el impacto de cada FC experimentado en ambos sistemas educativos y de realizar una síntesis de la retroalimentación correctiva más eficaz en Francia y en España, con el fin de desarrollar el estadio de interlengua de los alumnos. Los datos y los resultados de la investigación muestran que la práctica de algunos tipos de FC, según diferentes modalidades de agrupamiento de aprendices (individual o por parejas), ha tenido un impacto directo en el proceso de aprendizaje / adquisición de la LE, tales como el FC directo en los alumnos de Secundaria de FLE y de ELE, el FC metalingüístico en tándem en los aprendices hispanófonos de Bachillerato, el FC mixto en los aprendices francófonos de Instituto y los estudiantes de ambos países. En cambio, otros FC no han provocado la asimilación de nuevos conocimientos por parte de los aprendices; a saber el FC indirecto, sobre todo en los alumnos españoles de ESO, el FC metalingüístico en tándem en los aprendices francófonos de Instituto, el FC metalingüístico individual en los aprendices de habla español, el FC indirecto en los estudiantes de ambos lados de los Pirineos. Esto ha dado lugar a que numerosas reglas gramaticales permanezcan todavía inertes. De ahí, la presencia recurrente de errores no rectificados en la producción escrita de los alumnos. El estudio finaliza proponiendo algunas recomendaciones susceptibles de ser ampliadas o modificadas, con el fin de lograr el "plurilingüismo" tan proclamado por las instancias europeas y optimizar el FC en clase de FLE y de ELE.
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Marti, Alexandra. "« Feedback » correctif à l'écrit à travers l'étude comparative du FLE en Espagne et de l'ELE en France : processus d'enseignement, apprentissage et acquisition." Electronic Thesis or Diss., Sorbonne Paris Cité, 2017. http://www.theses.fr/2017USPCB184.

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Cette thèse qui se veut transdisciplinaire, alliant les sciences du langage, les sciences de l'éducation et la sociolinguistique, se centre sur quatre axes principaux : la politique du plurilinguisme dans les institutions éducatives, l'apprentissage et l'acquisition des LE (le Français Langue Etrangère : FLE, et l'Espagnol Langue Etrangère : ELE), les erreurs et le feedback correctif (FC) à l'écrit, les pistes d'optimisation didactique pour promouvoir l'éducation plurilingue et le FC. Les résultats de ce travail de recherche montrent que, à l'échelle nationale, l'objectif du plurilinguisme dans les institutions éducatives est très loin d'être atteint en France et en Espagne, comme en témoigne l'analyse des chiffres et des statistiques publiés par les deux Ministères de l’Éducation Nationale durant l'année académique 2014-2015, laissant transparaître la situation peu avantageuse du français en Espagne et de l'espagnol en France face à la prédominance de l'anglais, bien qu'il soit indéniable que l'ELE présente de bien meilleurs résultats que le FLE. A l'échelle locale, c'est-à-dire au niveau de la classe, notre travail de recherche-action autour du FLE et de l'ELE s'est centré sur l'analyse de différents types de FC expérimentés à l'écrit (direct, indirect, reformulatif, métalinguistique, électronique et mixte) à travers une démarche en trois étapes : rédaction / comparaison avec le FC / réécriture. L'objectif était de découvrir l'impact de chacun des FC à l'étude dans les deux systèmes éducatifs considérés, et de réaliser une synthèse de la rétroaction corrective s'avérant la plus efficace en France et en Espagne, en vue de faire évoluer le stade d'interlangue des apprenants. Les données et les résultats de la recherche montrent que la pratique de certains types de FC, suivant différentes modalités de regroupement d'apprenants (individuel ou en binôme), a eu une incidence directe dans le processus d'apprentissage / acquisition de la LE, tels que le FC direct chez les collégiens de FLE et d'ELE, le FC métalinguistique en binôme chez les lycéens espagnols, le FC mixte chez les lycéens français et les étudiants des deux pays. En revanche, d'autres FC n'ont pas entraîné l'assimilation de nouvelles connaissances par les apprenants, à savoir le FC indirect, surtout chez les collégiens hispanophones, le FC métalinguistique en binôme chez les lycéens francophones, le FC métalinguistique individuel chez les lycéens hispanophones, le FC indirect chez les étudiants de part et d'autre des Pyrénées. C'est ainsi que de nombreuses règles grammaticales restent encore inertes. D'où la présence récurrente d'erreurs non rectifiées dans les productions écrites de tous les apprenants. L'étude conclut en proposant quelques recommandations susceptibles d'être étoffées, voire modifiées, ayant pour finalité le « plurilinguisme » tant proclamé par les instances européennes et l'optimisation du FC en classe de LE
This thesis, which aims at adopting a transdisciplinary approach by combining the Language Sciences, Education Sciences and Sociolinguistics, focuses on four main ranges: the politics of the plurilingual education, the learning and acquisition of a foreign language (French as a Foreign Language: FFL, Spanish as a Foreign Language: SFL), error treatment and corrective feedback (CF) in writing, as well as the didactic optimization tools directed to promoting both plurilingual education and CF. The results of this piece of research show that the nationwide goal of fostering plurilingualism is far from being reached in France as well as in Spain, as evidenced by the figures and statistics issued by both respective Ministries of Education for the academic year 2014-2015, which attest to the underprivileged status of the French language in Spain and that of the Spanish language in France compared with English language, even though it cannot be denied that SFL teaching delivers, in this regard, better results than FFL teaching. On a local scale, at the classroom level, the methodological approach of action-research carried out in different FFL/SFL classrooms has focused on the analysis of different types of written corrective feedback (direct, indirect, reformulative, metalinguistic, electronic and mixed) throughout a process split into three phases: writing task / comparison between the aforementioned task and the provided corrective feedback / rewriting task. The objective sought was both to bring to light the impact of CF on both education systems and to elaborate an abridgment of the most effective CF in France and Spain in order to develop the students' interlanguage stages. As shown by the data and results of the research, the practice of some types of CF, according to different classification methods for learners (individual, pairs), has had a direct impact on the foreign language learning/acquisition process through the direct CF in secondary school students (both FFL and SFL), the metalinguistic CF in tandem partners amongst Spanish-speaking students undertaking the Spanish Baccalaureate and the mixed CF amongst the French-speaking high school students and the students of both countries. Nevertheless, other types of CF have been proven to be ineffective to insure assimilation by learners such as the case of the indirect CF, especially amongst secondary-school Spanish students, the metalinguistic CF in tandem partners amongst French-speaking high school students, the individual metalinguistic CF amongst Spanish-speaking learners and the indirect CF amongst students on both sides of the Pyrenees. This has brought about the specific conservatism of plenty of grammar rules. Hence, the recurring presence of errors left uncorrected by students in their writing tasks. The study concludes with some recommendations liable to being broadened or modified, with the objectives of reaching the much proclaimed "plurilingualism" by the European institutions and of optimizing the CF in the FFL/SLF classrooms
Esta tesis, que quiere ser transdisciplinaria, combinando las ciencias del lenguaje, las ciencias de la educación y la sociolingüística, se centra en cuatro áreas principales: la política del plurilingüismo en las instituciones educativas, el aprendizaje y la adquisición de LE (el Francés Lengua Extranjera: FLE, y el Español Lengua Extranjera: ELE), el tratamiento del error y el feedback correctivo (FC) en la producción escrita, así como las pistas de optimización didáctica para promover la educación plurilingüe y el FC. Los resultados de este trabajo de investigación muestran que, a nivel nacional, el objetivo del plurilingüismo en las instituciones educativas está muy lejos de ser alcanzado en Francia y en España, como lo demuestra el análisis de las cifras y las estadísticas publicadas por los dos Ministerios de Educación en el año académico 2014-2015, dejando ver una situación poco ventajosa del francés en España y del español en Francia frente al dominio del inglés, aunque es innegable que el ELE presenta en este sentido mejores resultados que el FLE. A nivel local, es decir en el marco del aula, la investigación-acción realizada en clase de FLE y de ELE se ha centrado en el análisis de diferentes tipos de FC escrito (directo, indirecto, reformulativo, metalingüístico, electrónico y mixto) a través de un proceso en tres etapas: redacción / comparación con el FC / reescritura. Se trataba de descubrir el impacto de cada FC experimentado en ambos sistemas educativos y de realizar una síntesis de la retroalimentación correctiva más eficaz en Francia y en España, con el fin de desarrollar el estadio de interlengua de los alumnos. Los datos y los resultados de la investigación muestran que la práctica de algunos tipos de FC, según diferentes modalidades de agrupamiento de aprendices (individual o por parejas), ha tenido un impacto directo en el proceso de aprendizaje / adquisición de la LE, tales como el FC directo en los alumnos de Secundaria de FLE y de ELE, el FC metalingüístico en tándem en los aprendices hispanófonos de Bachillerato, el FC mixto en los aprendices francófonos de Instituto y los estudiantes de ambos países. En cambio, otros FC no han provocado la asimilación de nuevos conocimientos por parte de los aprendices; a saber el FC indirecto, sobre todo en los alumnos españoles de ESO, el FC metalingüístico en tándem en los aprendices francófonos de Instituto, el FC metalingüístico individual en los aprendices de habla español, el FC indirecto en los estudiantes de ambos lados de los Pirineos. Esto ha dado lugar a que numerosas reglas gramaticales permanezcan todavía inertes. De ahí, la presencia recurrente de errores no rectificados en la producción escrita de los alumnos. El estudio finaliza proponiendo algunas recomendaciones susceptibles de ser ampliadas o modificadas, con el fin de lograr el "plurilingüismo" tan proclamado por las instancias europeas y optimizar el FC en clase de FLE y de ELE
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Zaidan, Nada Mousa O. "The role of Gata3 in blood stem cell emergence." Thesis, University of Cambridge, 2018. https://www.repository.cam.ac.uk/handle/1810/274544.

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The first definitive haematopoietic stem cells (HSCs) produced during embryonic development are generated from a specialised subset of endothelial cells known as haemogenic endothelium. Recently, it was reported that Gata3 plays a dual role in the development of sympathetic nervous system and haematopoietic system. In fact, Gata3 has proven to be crucial for the production of HSCs through regulation of catecholamine production from the co-developing sympathetic nervous system. Also, it was recently shown that Gata3 is expressed in the haemogenic endothelium and haematopoietic progenitor cells. Here, I will specifically examine the role of Gata3 in the production of HSCs; if it is expressed and plays a role in the precursors from which HSCs arise. Using a Gata3-GFP reporter mouse line, we found that Gata3 is expressed in various cell types in the HSCs microenvironment, including mesenchymal cells, endothelial cells, haematopoietic cells and sympathetic nervous system, and this expression was stage dependant. In the endothelial cells, we have found that the haemogenic endothelium activity is enriched in Gata3 expressing cells. Within the haematopoietic cells, we have found that Gata3 marks a specific stage along the developmental pathway towards the generation of definitive haematopoietic stem cells, and that Gata3 expressing haematopoietic cells are enriched for the most immature and stem cell like progenitors. Moreover, Gata3 will be specifically knocked out in haemogenic endothelial cells to determine whether it plays an essential role in the production of HSCs from the endothelium using the Vec-Cre system. We found that Gata3 within the haemogenic endothelium plays a major role in haematopoietic progenitors formation, and possibly haematopoietic stem cell formation. Finally, we used molecular assay (RNA seq) to identify the role of Gata3 in the haematopoietic stem cell microenvironment and found that Gata3 plays a major role in the development and differentiation of various cells and systems, and implicated Gata3 as cell cycle regulator. In summary, we found that Gata3 expressing cells is enriched for haemogenic endothelium, crucial for the haematopoietic progenitors formation, plays and important role in endothelial to haematopoietic transition, and plays a key developmental role in both haematopoietic stem cell and its microenvironment.
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Books on the topic "Fly eye"

1

Reynolds, Aaron. Joey Fly, private eye in Big hairy drama. New York: Henry Holt, 2010.

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M, Weaver Brian, ed. Joey Fly, private eye in Creepy crawly crime. New York: Henry Holt, 2009.

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J, Wood Kathryn, Montgomery Ronald W, United States. Office of Aviation Medicine., and Civil Aeromedical Institute, eds. Refractive surgery in aircrew members who fly for scheduled and nonscheduled civilian airlines: Final report. Washington, D.C: U.S. Dept. of Transportation, Federal Aviation Administration, Office of Aviation Medicine, 2000.

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Tapply, William G. Trout eyes. New York, NY: Skyhorse Pub., 2007.

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Baron, Aileen Garsson. A fly has a hundred eyes. Chicago, Ill: Academy Chicago Publishers, 2002.

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Seasons of the Metolius: The life of a river seen through the eyes of a fly fisherman. Sisters, Or: No Nonsense Fly Fishing Guidebooks, 2002.

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Anelli, Eliverta Kanina. Fly with me: Udhëtimet më të bukura janë ato që rrëfehen... : ese. Tiranë: Muzgu, 2020.

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Baca, Diznarda Salcedo. Evaluación económica del Programa Moscamed en Guatemala y sus impactos en ese país, México, EE.UU y Belice. Edited by Inter-American Institute for Cooperation on Agriculture and SENASICA (Agency). México: SAGARPA, Secretaría de Agricultura, Ganadería, Desarrollo Rural, Pesca y Alimentacion, Estados Unidos Mexicanos, SENASICA, Servicio Nacional de Sanidad, Inocuidad y Calidad Agroalimentaria, 2013.

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Ferris, Chris. Green-eyed Flo: The cat, the fox and the badgers. London: Coronet Books, 1993.

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Center, Langley Research, ed. A description of the software element of the NASA EME flight tests. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1996.

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Book chapters on the topic "Fly eye"

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Franceschini, Nicolas. "Sequence Discriminating Neural Network in the Eye of the Fly." In Analysis and Modeling of Neural Systems, 189–97. Boston, MA: Springer US, 1992. http://dx.doi.org/10.1007/978-1-4615-4010-6_18.

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Lauwers, Elsa, and Patrik Verstreken. "Assaying Mutants of Clathrin-Mediated Endocytosis in the Fly Eye." In Clathrin-Mediated Endocytosis, 109–19. New York, NY: Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-8719-1_9.

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Molchanov, Pavlo A. "Nature-inspired Fly Eye: Multi-beam Staring Antenna Array Concept." In Seeing Invisible, 1–22. New York: River Publishers, 2024. http://dx.doi.org/10.1201/9781003476559-1.

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Hardie, Roger, Simon Laughlin, and Daniel Osorio. "Early Visual Processing in the Compound Eye: Physiology and Pharmacology of the Retina-Lamina Projection in the Fly." In Neurobiology of Sensory Systems, 23–42. Boston, MA: Springer US, 1989. http://dx.doi.org/10.1007/978-1-4899-2519-0_3.

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Fuse, Naoyuki, Tasuku Kitamura, Takashi Haramura, Kentaro Arikawa, and Michio Imafuku. "Compound Eyes of Dark-fly." In SpringerBriefs in Biology, 23–27. Tokyo: Springer Japan, 2013. http://dx.doi.org/10.1007/978-4-431-54147-9_3.

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Cavallaro, Umberto. "Barbara Morgan: “I’ll Fly with the Eyes, Ears, the Heart and Mind of a Teacher”." In Women Spacefarers, 313–19. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-34048-7_49.

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Matsumoto, Hiroyuki, Esther S. Kahn, and Naoka Komori. "The Emerging Role of Mass Spectrometry in Molecular Biosciences: Studies of Protein Phosphorylation in Fly Eyes as an Example." In Novartis Foundation Symposium 224 - Rhodopsins and Phototransduction, 225–48. Chichester, UK: John Wiley & Sons, Ltd., 2007. http://dx.doi.org/10.1002/9780470515693.ch13.

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Fathima Shemim, K. S., and Ulf Witkowski. "Enhanced Energy-Efficient Fuzzy Logic Clustering and Network Coding Strategy for Wireless Sensor Networks (EEE-FL-NC)." In Advanced Computing and Intelligent Technologies, 59–72. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-2164-2_5.

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Charlton-Perkins, Mark, and Tiffany A. Cook. "Building a Fly Eye." In Current Topics in Developmental Biology, 129–73. Elsevier, 2010. http://dx.doi.org/10.1016/b978-0-12-385044-7.00005-9.

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Colley, N. J. "Retinal Degeneration through the Eye of the Fly." In Encyclopedia of the Eye, 54–61. Elsevier, 2010. http://dx.doi.org/10.1016/b978-0-12-374203-2.00168-8.

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Conference papers on the topic "Fly eye"

1

Gorwara, Ashok, and Pavlo Molchanov. "Fly Eye Radar concept." In 2017 18th International Radar Symposium (IRS). IEEE, 2017. http://dx.doi.org/10.23919/irs.2017.8008196.

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Molchanov, Pavlo, and Olga Asmolova. "Fly eye radar or micro-radar sensor technology." In SPIE Defense + Security, edited by Edward M. Carapezza. SPIE, 2014. http://dx.doi.org/10.1117/12.2050063.

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Molchanov, Pavlo, and Ashok Gorwara. "Fly Eye radar: detection through high scattered media." In SPIE Defense + Security, edited by Kenneth I. Ranney and Armin Doerry. SPIE, 2017. http://dx.doi.org/10.1117/12.2261849.

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Sterckx, K. L. "Pyramidal fly-eye detection antenna for optical wireless systems." In IEE Colloquium Optical Wireless Communications. IEE, 1999. http://dx.doi.org/10.1049/ic:19990696.

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Arcidiacono, Carmelo, Lorenzo Cibin, Marco Chiarini, Piero Gregori, Demetrio Pitasi, Francesco Cerutti, Cristiano Simonelli, and Roberto Ragazzoni. "About the development of the first fly-eye telescope." In Ground-based and Airborne Telescopes VIII, edited by Heather K. Marshall, Jason Spyromilio, and Tomonori Usuda. SPIE, 2020. http://dx.doi.org/10.1117/12.2562227.

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Abdel Hafiz, Ibrahim, Marwa M. Abdel Mo'men, and Moustafa H. Aly. "Parametric study of the multibeam transmitter and fly-eye receiver." In Photonics North 2010, edited by Henry P. Schriemer and Rafael N. Kleiman. SPIE, 2010. http://dx.doi.org/10.1117/12.871387.

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Schreiber, Peter, and Leo M. Wilhelm. "Light shaping with micro-optical irregular fly′s eye condensers." In International Optical Design Conference 2021, edited by Richard N. Pfisterer, Henning Rehn, Simon Thibault, and Peter P. Clark. SPIE, 2021. http://dx.doi.org/10.1117/12.2603648.

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Yano, Hiroaki, and Tomohiro Yendo. "Spherical full-parallax light-field display using ball of fly-eye mirror." In SIGGRAPH '18: Special Interest Group on Computer Graphics and Interactive Techniques Conference. New York, NY, USA: ACM, 2018. http://dx.doi.org/10.1145/3214907.3214917.

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Truong, Nancy, and William Agassounon. "Visual signal processing using fly-eye-based algorithm to detect the road edge." In Defense and Security Symposium, edited by Zia-ur Rahman, Stephen E. Reichenbach, and Mark A. Neifeld. SPIE, 2007. http://dx.doi.org/10.1117/12.718635.

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Katsuta, Yuki, and Tomoyuki Miyamoto. "Characterization and Optimization of Fly-eye Lens System in Optical Wireless Power Transmission." In 2019 24th Microoptics Conference (MOC). IEEE, 2019. http://dx.doi.org/10.23919/moc46630.2019.8982861.

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