11 research outputs found
Density based subspace clustering of urban audio recordings
No full textSound pollution is a common concern in urban environments. Many cities are therefore equipped with networks of microphones, which are merely used to identify loud areas and less loud areas. Additional information, other than the sound levels, is not derived. It is unknown which sound events are responsible for the recorded sound levels. This thesis aims to cluster sound events in an unlabelled audio recording, to distinguish which sound sources cause the recorded sound levels. In order to cluster sound events, audio features are required. As it is unknown which (possibly large number of) sound events to expect, many audio features are extracted from the data. This results in high-dimensional data which introduces several challenges for clustering. To overcome these challenges, it is assumed that relevant features are dependent on the sound event. Each sound event cluster is searched in a different subset of the full-dimensional space. This method, called subspace clustering, is evaluated. In order to evaluate a subspace clustering algorithm, evaluation techniques are used. As evaluation on an unlabelled dataset is difficult, a labelled audio dataset is used, namely the ESC-10 dataset. For unlabelled datasets, an internal metric is proposed. Still, evaluation of a subspace clustering algorithm on this labelled dataset is not straightforward. Because (subspace) clusters are not assigned to any class, a label search is derived. This label search assigns the best subspace clusters to a label. This enables a comparison between a subspace clustering algorithm and a full-dimensional base model, i.e. k-means clustering. The subspace clustering algorithm, SUBCLU, indicates considerable performance improvements when compared to k-means on the labelled ESC-10 dataset. The overall accuracy of k-means is 33% while SUBCLU achieves an accuracy of 47% on this labelled dataset. Although there are some limitations of the implemented methodology, this research demonstrates that subspace clustering is beneficial for clustering (unknown) sound events in audio recordings.Electrical Engineering | Signals and System
Swarm robot localization from noisy distance measurements
No full textComputer Science and Engineerin
Cancer and Bone Metastasis
No full textThis eBook is a collection of articles from a Frontiers Research Topic. Frontiers Research Topics are very popular trademarks of the Frontiers Journals Series: they are collections of at least ten articles, all centered on a particular subject. With their unique mix of varied contributions from Original Research to Review Articles, Frontiers Research Topics unify the most influential researchers, the latest key findings and historical advances in a hot research area! Find out more on how to host your own Frontiers Research Topic or contribute to one as an author by contacting the Frontiers Editorial Office: frontiersin.org/about/contac
Pengaruh Model Pembelajaran Dan Prokrastinasi Akademik Terhadap Kemampuan Berpikir Kritis Matematika (Eksperimen Pada SMA Swasta di Jakarta Utara)
Get PDFGeochemistry of carbonate formations of the Chhattisgarh Supergroup, central India: implications for Mesoproterozoic global events
Get PDFThe Chhattisgarh Supergroup is one of the major Proterozoic marine sedimentary sequences of India. It consists of largely undeformed and unmetamorphosed siliciclastic, volcaniclastic, and carbonate formations deposited in two sub-basins, Hirri and Bharadwar, separated by an Archean greenstone belt. In spite of its apparent importance for Mesoproterozoic oceanic records, very few geochemical studies have been carried in the basin. Here, we present results of our high resolution geochemical and C–O–Sr isotopic studies in two carbonate formations of the supergroup: the Charmuria and the Chandi. We observe elevated δ13C values increasing from 2.6‰ to 3.6‰ in these formations, which is consistent with the globally reported late Mesoproterozoic values. Such consistently positive δ13C values are attributed to increased organic carbon burial in the basin margins during the deposition of these carbonates. Based on the principles of δ13C isotope stratigraphy, we suggest a depositional age between 1.0 and 1.2 Ga for these carbonates which form the upper part of the supergroup. The lowest 87Sr/86Sr ratios obtained from the Charmuria and Chandi formations, 0.70723 and 0.70816, respectively, are more radiogenic than the contemporaneous seawater, suggesting that the Sr isotopic system of the formations are altered. Based on the similarity in the δ13C values, we stratigraphically correlate the carbonate formations of the Raipur Group in both the Hirri and Bharadwar sub-basins. We also present a compilation of available δ13C and 87Sr/86Sr records from all the Proterozoic sedimentary successions of India and compare it with the global datasets. We find that while the Indian basins possess records of the Bitter Springs and Shuram δ13C anomalies, they lack evidence for the other major global events of the Proterozoic.The accepted manuscript in pdf format is listed with the files at the bottom of this page. The presentation of the authors' names and (or) special characters in the title of the manuscript may differ slightly between what is listed on this page and what is listed in the pdf file of the accepted manuscript; that in the pdf file of the accepted manuscript is what was submitted by the author
Option prices and accounting choices
No full textMy dissertation research contains two chapters on the impact of the accounting choices, conservatism and quality of the accounting information, on the option prices. In the first chapter entitled "Option Prices, Accruals and Conservatism" we examine whether option traders incorporate two key characteristics of financial reporting choices, namely, accrual quality and conservatism, in pricing options. Since the accounting methods chosen for reporting accruals, and the depth of conservatism in recognizing good or bad news, drive reported financial numbers and stock prices, it is reasonable to expect that option prices, and the implied volatility embedded in these prices, are also influenced by these accounting choices. With respect to accrual quality, we conjecture that the higher the accrual quality, the better the quality of information reported, the lower the uncertainty, and the lower the implied volatility. Therefore, we expect an inverse relation between accrual quality and implied volatility. On conservatism, we argue that higher conservatism increases uncertainty because it provides an incomplete (biased) one-sided negatively biased report, while mostly understating or even ignoring positive news. Using different metrics for both accrual quality and conservatism, we find compelling evidence in support of our conjectures. In the second chapter entitled "Option Volatility Skew, Accruals, and Conservatism", we investigate whether the option volatility skew is influenced by the accounting choices. We reason that if uncertainty about the firm is reduced, it should reduce the option volatility skew. Since higher (lower) accruals quality presumably lowers (increases) uncertainty about the firm, volatility skews should decrease (increase). With respect to conservatism, the implications are not clear cut. It has been argued that conservatism in financial reporting increases the uncertainty about the firm (Langberg and Sirivaramakrishnan, 2008), while others have argued that uncertainty is reduced (Guay and Verrechia, 2007; Suijs, 2008; Garcia et al., 2011). We find that as the level of conservatism increases and the quality on accruals decreases, the option volatility skew increases.Ph.D.Includes bibliographical referencesIncludes vitaby Karina E. Chandi
RAMKUMAR MUKHAPADHYAYER ‘DHANAPATIR SINHALYATRA’ : NABARUPE CHANDIMANGAL/ রামকুমার মুখোপাধ্যায়ের ‘ধনপতির সিংহলযাত্রা’ : নবরূপে চন্ডীমঙ্গল
No full textoai:ojs2.tirj.org.in:article/2Ramkumar Mukherjee\u27s novel \u27Dhanpati\u27s Sinhala Yatra\u27 is also medieval in terms of language. The novel has been reimagined by Chandimangal. Ramkumar Mukherjee has adopted the first part of the narrative of the merchant section in his novel. From Dhanpati\u27s Sinhala Yatra to captivity. Here, the novelist has looked back at medieval Bengal and Bengalis from a distance of several centuries, keeping Mukund\u27s poetry in front of him. He has made no attempt to drag the past into the present. Nor has he taken the present into the past and placed it there. In this book, the past cannot be seen in the present and the present in the past. A pure historical setting has been created where there is no shadow of the twenty-first century. Chapters such as the lifting of the Saptadinga, Dhanpati\u27s journey to the Dingaghata, Ajay Yatra, Muktabeni, and the journey of rivers and streams describe extinct rivers, towns, etc. The novel contains themes such as mythological consciousness, religious ideals, and a reevaluation of divine consciousness. Dhanpati traveled to the southern country in the hope of prosperity. However, his fate and destiny were determined by the hideous plots and cruelty of two goddesses. Ignoring many ominous signs and the desperate pleas of Khulna, Dhanpati has to travel helplessly towards the inevitable end. This is his destiny. Ramkumar Mukherjee has presented the novel \u27Dhanpati\u27s Singhal Yatra\u27 in a magical bond of intense fascination with the tradition of Bengali cultural heritage. The novel has a unique and modern reconstruction of the well-known Afghan poem of the medieval \u27Chandimangal\u27. The novelist has kept the basic structure of the story intact here, but has analyzed the psychological depth of the characters and the socio-economic context of the time from a modern perspective. As a result, it emerges as a picture of the conflict between man and time instead of the story of the greatness of the Goddess. In the novel, Dhanpati is a prosperous merchant of Ujjainnagar, but he has endless questions and doubts about the social system of the time. He wants to magnify the efforts and logic of man instead of the miracles of the conventional gods and goddesses. This rational mind has taken him against the conventional beliefs and conventional customs. And later it has become the main reason for the conflict in his life. On the king\u27s orders, Dhanpati has to undertake a journey to Sinhala despite his reluctance. Before the journey, the wish of his husband for his well-being did not open, so when the puja of Goddess Chandi was organized, the rational, confident, and realistic leader trampled the auspicious place of the Goddess with contempt. To him, the greatness of the Goddess is irrational and miraculous. However, the author portrays this insult not only as an insult, but as a clash between traditional beliefs and modern logic. The novel is not just a religious story, but also a story of human survival in the face of adversity. Overall, the novel has become a reinterpretation of the medieval \u27Chandimangal\u27 poem
Niranjaner Ushma : Between the Lines and Beyond/ নিরঞ্জনের উষ্মা : পাঠে-পাঠান্তরে
No full textNiranjaner Rushma (or Ushma) by Ramai Pandit is an integral part of Shunyapurana. The mythological, historical and social significance of this particular section stands as a cornerstone in the pre-modern Bengali Mangalkavya literature. There is no concrete etymology for the word ‘Rushma’. It can happen that while reading or listening, there were some errors in comprehending; Or else there is a possibility that, this new term was strategically coined to imply the fiery wrath of Dharmaraj! In essence, Niranjaner Ushma is a fragment of the ‘Jalali Kalima’, vividly depicting the Turkic conquest of Jajpur in Odisha. Here, the story unfolds the torture of rapacious Brahmins for honorarium and the exploitation of the common folks which are beyond words. Into this turmoil, Dharmathakur emerged in the disguise of a Yavana who strategically put them in their places and hence justice prevailed.
Many celebrated historians of literature had framed the context of this piece as an era of conflict between Hindu-Buddhist ideologies. And so, in the fading twilight of Buddhism, we witnessed that Brahmanical culture rose to ultimate dominance and tyranny and as an expected outcome, persecuted Buddhists (Saddharmi) dived into the open arms of Islam. This chapter, stained with both power and pain, lingers in the annals of literature as a silent witness. Literature remembers this not as history, but as confession.
Perhaps scholars like Haraprasad Shastri, Nagendranath Basu or Dineshchandra Sen would delve into the political history of 10th–12th century of Bengal and dig up evidence—tracing the rise of royal dynasties (the Sens, Varmans, Chandras, Devas or Khargas). These kingswere devoted patrons of Brahminical culture. So, regionally the rise of the Brahmin community as the economic and religious superiors in Bengal’s society was the real driving force behind this phenomenon.
Not only West Bengal, esteemed historian of the East Bengal, Ahmed Sharif has also declared ‘Bada Jalali & Chhota Jalali’ Kalima as a burning evidence of the seething rage and bitter defiance of an near-extinct Buddhist community against the expanding, oppressive Brahminical order. According to the author of “Bangla Sahitya Kosh”, Mr. Wakil Ahmed also interpreted that ‘Niranjaner Rushma’ is nothing but a literary historic instance of the desperate surrender of the oppressed Buddhists who are trying their best to escape from the pathetic tyranny of Brahmins. In his words, this persecuted community maintained a safe distance and enjoyed the conquest of Turks and the shameful downfall of the Brahmins. As a token of gratitude towards Muslims, they worshipped Niranjan dharma infused with Islamic monotheism. In ‘Niranjaner Rushma’ there is a subtle hint of socio-religious shift where the oppressed Buddhists started to get converted in Islam in a large number.
On the other contrary, historian of Bengali Language, Dr. Sukumar Sen will emphasis that ‘Jalali Kalima’ is nothing but a reminiscence of the rapid raid of Delhi Emperor Badshah Firoz-Shah-Tughlak in Bengal and Odisha during the 14th centuries.
Moreover, entirely refuting the imagined periodization of Hindu-Buddhist conflicts, Shashibhushan Dasgupta would shift the focus and add: The residues of Buddhism, the framework of Hindu popular thought, certain indigenous non-Aryan ritual practices, and the ethos of Islamic ideology formed into an entirely new tapestry of folk ‘Dharma’.
But we’d argue that interpreting this from such scattered, fragmentary angles misses the bigger picture. Take the Ramai Pandit’s scripture on Dharma worship rituals (Vishwabharati MS No. 129)—when we piece together the stories before and after ‘Niranjaner Ushma,’ a fascinating narrative unfolds. Here, the Dharma worshippers’ belief system describes the cosmic creation process of Dharma-Raja himself, where diverse human races emerge—and right there eventually, the almighty Niranjan (in his form as Khoda) was creating the Muslim community.
Dharmapandit Ramai had replaced Hindu deities like Karticka, Ganesha, Brahma, Vishnu, Maheshwara, Chandi Mata, Manasa etc with Kaji, Gaji, Khoda, Pekambar, Baba Adam, Fakir, Nurbibi etc. This is nothing but Hindu mythological pattern. A hallmark of Hindu mythic tradition is its syncretic impulse—assimilating disparate beliefs by refracting them through the prism of its own deities. In the ecumenical vision of devout seekers, Gods and Goddesses of all faiths converge under one roof; where Khoda, Ishwar, and Dharmathakur had unified into one entity and created this cosmos. In the alchemy of converging divinities, ‘Niranjaner Ushma’ kindles into scripture where all faiths dissolved into a single syllable
La habitación india de Pierre Jeanneret en Chandigarh
Get PDFThe photograph that Pierre Jeanneret composes and takes between 1953-1956 in the backyard of his house in Chandigarh, is one of the many examples to understand how the knowledge and understanding of the architect about the site, on his arrival in India in 1951, was fundamental at the moment of projecting and building in the new capital of the Punjab. This article proposes a critical and descriptive analysis of photography based on the information compiled in documents and original photographs by the author, to make explicit some relationships of place, order and meaning, and how these result in the construction of the domestic space of the place.La fotografía que Pierre Jeanneret compone y toma entre 1953-1956 en el patio trasero de su casa en Chandigarh, es uno de los muchos ejemplos para entender cómo lo aprendido y entendido por parte del arquitecto, ante su llegada en India en 1951, fue fundamental a la hora de proyectar y construir en la nueva capital del Punjab. Este articulo propone un análisis crítico y descriptivos de la fotografía a partir de la información recopilada en documentos y fotografías originales del autor, para hacer explicitas algunas relaciones de lugar, orden y significado; y como estas resultan en la construcción del espacio domestico propio del lugar
