Stable Flags and the Riemann-Hilbert Problem

We tackle the Riemann-Hilbert problem on the Riemann sphere as stalk-wise logarithmic modifications of the classical R\"ohrl-Deligne vector bundle. We show that the solutions of the Riemann-Hilbert problem are in bijection with some families of local filtrations which are stable under the prescribed monodromy maps. We introduce the notion of Birkhoff-Grothendieck trivialisation, and show that its computation corresponds to geodesic paths in some local affine Bruhat-Tits building. We use this to compute how the type of a bundle changes under stalk modifications, and give several corresponding algorithmic procedures.Comment: 39 page

Electrocardiographic variables in children with syndromic craniosynostosis and primary snoring to mild obstructive sleep apnea

Background: In the spectrum of children with symptomatic sleep disordered breathing (SDB), some individuals – such as those with upper airway resistance syndrome (UARS) – do not have abnormalities on polysomnography (PSG). In this study we have assessed whether assessment of respiratory arrhythmia (RA) and heart rate variability (HRV) analysis helps in management of children with syndromic craniosynostosis and none-to-mild obstructive sleep apnea (OSA). Methods: Prospective cohort study in children aged 1–18 years old with syndromic craniosynostosis. Children were selected for HRV analysis from the ECG if their obstructive apnea–hypopnea index (oAHI) was between zero and five per hour (ie, oAHI ≤5/hour). Subjects were divided into groups based on the presence or absence of respiratory arrhythmia (with or without RA respectively) using the electrocardiogram (ECG). The main analysis included studying the relationship between RA and HRV, symptoms, interventions, and sleep architecture. Results: We identified 42 patients with, at worst, mild OSA. We found higher parasympathetic control and higher total power in children with RA during the non-rapid eye movement (non-REM) sleep. Children with RA also have a relatively higher percentage of paradoxical breathing during non-REM sleep (P = 0.042). Intracranial hypertension was distributed equally between groups. Last, RA patients showed increased parasympathetic activity that further increased in non-REM sleep. Conclusion: In syndromic craniosynostosis cases with SDB and PSG showing oAHI ≤5/hour, the presence of RA may indicate subsequent need for treatment interventions, and a trend toward higher occurrence of clinical symptoms. ECG analyses of HRV variables in subjects with RA demonstrate increased parasympathetic activity and total power. Such findings may add to the diagnosis of apparently asymptomatic children

Evaluating the robustness of objective pilling classification with the two-dimensional discrete wavelet transform

Previously, we proposed a new method of frequency domain analysis based on the two-dimensional discrete wavelet transform to objectively measure pilling intensity in sample fabric images. We have further evaluated this method, and our results indicate that it is robust to small horizontal and/or vertical translations and to significant variations in the brightness of the image under analysis, and is sensitive to rotation and to dilation of the image. These results suggest that as long as precautions are taken to ensure fabric test samples are imaged under consistent conditions of weave/knit pattern alignment (rotation) and apparent interyarn pitch (dilation), the method will yield repeatable results. <br /

Automatic detection of anchor points for multiple sequence alignment

<p>Abstract</p> <p>Background</p> <p>Determining beforehand specific positions to align (<it>anchor points</it>) has proved valuable for the accuracy of automated multiple sequence alignment (MSA) software. This feature can be used manually to include biological expertise, or automatically, usually by pairwise similarity searches. <it>Multiple </it>local similarities are be expected to be more adequate, as more biologically relevant. However, even good multiple local similarities can prove incompatible with the ordering of an alignment.</p> <p>Results</p> <p>We use a recently developed algorithm to detect multiple local similarities, which returns subsets of positions in the sequences sharing similar contexts of appearence. In this paper, we describe first how to get, with the help of this method, subsets of positions that could form partial columns in an alignment. We introduce next a graph-theoretic algorithm to detect (and remove) positions in the partial columns that are inconsistent with a multiple alignment. Partial columns can be used, for the time being, as guide only by a few MSA programs: ClustalW 2.0, DIALIGN 2 and T-Coffee. We perform tests on the effect of introducing these columns on the popular benchmark BAliBASE 3.</p> <p>Conclusions</p> <p>We show that the inclusion of our partial alignment columns, as anchor points, improve on the whole the accuracy of the aligner ClustalW on the benchmark BAliBASE 3.</p

ANALISIS KESANTUNAN BERBAHASA DALAM TINDAK TUTUR PEMBAWA ACARA SHABEKURI 007

Penelitian ini bertujuan untuk mendeskripsikan kesantunan berbahasa yang dilakukan oleh pembawa acara dalam acara talkshow Shabekuri 007 berdasarkan teori-teori yang dikemukakan oleh Brown dan Levinson (1987), Ide (1982), serta Mizutani dan Mizutani (1987). Alasan dari pemilihan topik tersebut adalah karena kesantunan berbahasa menjadi suatu hal yang banyak diperbincangkan, terutama ketika memasuki era globalisasi. Kemajuan teknologi komunikasi yang semakin tidak ada batasnya, serta penggunaan bahasa yang semakin beragam membuat kesantunan berbahasa ini menjadi penanda bahwa seseorang memiliki adab atau tatakrama dalam berbahasa. Dalam tuturan, terdapat kemungkinan terjadinya suatu tindakan pengancaman muka yang dilakukan oleh masing-masing pihak yang dapat mengganggu kelancaran proses komunikasi, sehingga terdapat aturan-aturan yang membatasi tindakan penutur dan mitra tutur serta strategi-strategi yang dilakukan agar terjalin komunikasi yang baik. Metode pengumpulan data yang digunakan adalah metode simak bebas libat cakap dan dianalisis menggunakan metode padan pragmatik. Hasil penelitian kemudian dijabarkan secara deskriptif. Hasil penelitian ini adalah dari 106 tuturan yang ditemukan dalam acara Shabekuri 007 terdapat enam penanda kesantunan berbahasa Mizutani dan Mizutani (1987), yaitu perubahan intonasi, penggunaan partikel pada akhir kalimat, penggunaan kalimat yang terkesan ragu-ragu, aizuchi, pemakaian bahasa Jepang yang santun dan halus, dan penyampaian maksud keinginan secara tidak langsung. Kemudian berdasarkan aturan kesantunan berbahasa Ide (1982) terdapat 71 tuturan yang mengabaikan aturan tersebut dan 35 tuturan yang memenuhi aturan tersebut. Aturan tersebut terdiri dari berlaku santun terhadap orang yang memiliki kedudukan yang tinggi, memiliki kekuasaan yang lebih besar, dan terhadap orang yang lebih tua. Kemudian strategi kesantunan Brown dan Levinson (1987) yang digunakan dalam acara Shabekuri 007 terdiri dari strategi kesantunan negatif, strategi on-record, strategi kesantunan positif, dan strategi off-record. Tujuan dilakukannya strategi-strategi tersebut adalah untuk menghindari ketidaknyamanan mitra tutur terhadap tuturan yang dilakukan oleh penutur. This study aims to describe the language politeness which used by presenters in the talk show Shabekuri 007 based on the theories proposed by Brown and Levinson (1987), Ide (1982), and Mizutani and Mizutani (1987). The reason for choosing this topic is because politeness in language is widely discussed, especially when entering the globalization era. The advances of communication technology that are increasingly limitless, as well as the usage of increasingly diverse languages make this language politeness is a sign that someone has etiquette or manners in language. In speech, there is the possibility of a face-threatening act carried out by each party that can interfere the communication process, so that there are rules that limit the actions of speakers and speech partners as well as strategies used to establish a good communication. This study’s data was collected using the free-to-talk method and analyzed using the pragmatic equivalent method. The results of the study were then described descriptively. The results of this study are from the 106 utterances found in the Shabekuri 007 program, there are six signs of politeness in Mizutani and Mizutani (1987), namely changes in intonation, use of particles at the end of sentences, use of sentences that seem hesitant, aizuchi, use of polite Japanese, and conveying the intention of the desire indirectly. Then, based on the Ide language politeness rules (1982) there are 71 utterances that ignore these rules and 35 utterances that fulfill these rules. The rules consist of being polite to people who have a high position, have more power, and to people who are older. Then, Brown and Levinson's (1987) politeness strategies used in the Shabekuri 007 program consist of negative politeness strategies, on-record strategies, positive politeness strategies, and off-record strategies. The purpose of doing these strategies is to avoid the inconvenience of the speech partner to the speech made by the speaker

Challenges of Annotation and Analysis in Computer-Assisted Language Comparison: A Case Study on Burmish Languages

The use of computational methods in comparative linguistics is growing in popularity. The increasing deployment of such methods draws into focus those areas in which they remain inadequate as well as those areas where classical approaches to language comparison are untransparent and inconsistent. In this paper we illustrate specific challenges which both computational and classical approaches encounter when studying South-East Asian languages. With the help of data from the Burmish language family we point to the challenges resulting from missing annotation standards and insufficient methods for analysis and we illustrate how to tackle these problems within a computer-assisted framework in which computational approaches are used to pre-analyse the data while linguists attend to the detailed analyses

Determinación del ángulo de incidencia de un proyectil disparado por arma de fuego a partir de los signos generados en el orificio de un blanco de acrílico

El presente trabajo se planteó como objetivo establecer el ángulo de incidencia con el que un proyectil penetra un blanco construido en acrílico a partir de los signos generados en el orificio. En la experiencia, se utilizó un arma de fuego de tipo pistola semiautomática calibre 9 mm, marca FM Hi–Power, con munición Luger proyectil punta ojival, de la fábrica Magtech. Luego de efectuar cada disparo, se inspeccionó físicamente mediante observación directa la superficie de acrílico impactada. Se describieron las características de las distintas muestras, las cuales se separaron en tres categorías: orificio, bisel y fracturas radiales. El análisis de la experiencia concluyó que a partir de las características encontradas en las tres categorías anteriormente mencionadas, no se puede establecer el ángulo de incidencia mediante el análisis de un solo signo. En algunos casos la combinación de ellos permite acotar a un rango de ángulos la trayectoria incidente. Este trabajo de investigación tuvo un fin criminalístico, el cual fue el reconocimiento de los signos que se generan en los ángulos de incidencia de la experiencia para luego poder acotar la posición del tirador.The present work was raised as objective to establish the incidence angle with which a projectile penetrates a built in white acrylic from the signs generated in the hole. In the experience, a firearm was used to type semi-automatic pistol caliber 9 mm, mark FM Hi-Power, with ammunition ogival Luger bullet tip, of the factory Magtech. After each shot, inspected physically through direct observation of the acrylic surface impacted. They described the characteristics of the different samples, which were separated into three categories: hole, bevel, and radial fractures. The analysis concluded that the experience from the features found in the three categories above can not be set the angle of incidence by analyzing a single sign. In some cases a combination of these allows to delimit a range of angles incident path. This research work had a criminalistic, which was the recognition of the signs that are generated in the angles of incidence of the experience and then to refine the position of the shooter.Fil: Peñaranda, Corel Yasmí