1,720,963 research outputs found
Autonomous Fire Detection Robot Using Modified Voting Logic
No full textRecent developments at Fukushima Nuclear Power Plant in Japan have created urgency in the scientist community to come up with solutions for hostile industrial environment in case of a breakdown or natural disaster. There are many hazardous scenarios in an indoor industrial environment such as risk of fire, failure of high speed rotary machines, chemical leaks, etc. Fire is one of the leading causes for workplace injuries and fatalities. The current fire protection systems available in the market mainly consist of a sprinkler systems and personnel on duty. In the case of a sprinkler system there could be several things that could go wrong, such as spraying water on a fire created by an oil leak may even spread it, the water from the sprinkler system may harm the machinery in use that is not under the fire threat and the water could potentially destroy expensive raw material, finished goods and valuable electronic and printed data. There is a dire need of an inexpensive autonomous system that can detect and approach the source of these hazardous scenarios. This thesis focuses mainly on industrial fires but, using same or similar techniques on different sensors, may allow it to detect and approach other hostile situations in industrial workplace. Autonomous robots can be equipped to detect potential threats of fire and find out the source while avoiding the obstacles during navigation. The proposed system uses Modified Voting Logic Fusion to approach and declare a potential fire source autonomously. The robot follows the increasing gradient of light and heat intensity to identify the threat and approach the source
Autonomous Fire Detection Robot Using Modified Voting Logic
No full textRecent developments at Fukushima Nuclear Power Plant in Japan have created urgency in the scientist community to come up with solutions for hostile industrial environment in case of a breakdown or natural disaster. There are many hazardous scenarios in an indoor industrial environment such as risk of fire, failure of high speed rotary machines, chemical leaks, etc. Fire is one of the leading causes for workplace injuries and fatalities. The current fire protection systems available in the market mainly consist of a sprinkler systems and personnel on duty. In the case of a sprinkler system there could be several things that could go wrong, such as spraying water on a fire created by an oil leak may even spread it, the water from the sprinkler system may harm the machinery in use that is not under the fire threat and the water could potentially destroy expensive raw material, finished goods and valuable electronic and printed data. There is a dire need of an inexpensive autonomous system that can detect and approach the source of these hazardous scenarios. This thesis focuses mainly on industrial fires but, using same or similar techniques on different sensors, may allow it to detect and approach other hostile situations in industrial workplace. Autonomous robots can be equipped to detect potential threats of fire and find out the source while avoiding the obstacles during navigation. The proposed system uses Modified Voting Logic Fusion to approach and declare a potential fire source autonomously. The robot follows the increasing gradient of light and heat intensity to identify the threat and approach the source
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
USABILITY AND ACCESSIBILITY OF INTERNET BY THE UNIVERSITY STUDENTS OF PAKISTAN: A QUANTITATIVE STUDY OF KHUSHAL KHAN KHATTAK UNIVERSITY KARAK-PAKISTAN
Full text linkThis study was conducted to determine the approach of university’s students towards internet use. This study was carried out at the Khushal Khan Khattak University Karak, Khyber Pakhtunkhwa, Pakistan. The main aim of the study was to know the internet use pattern of university students, Problems in the way of internet use and students satisfaction from University internet facility. The study was based on a quantitative research technique. Data was collected through questionnaires and Stratified Convenience Sampling technique was used for data collection. The findings of the study revealed that students mostly use the internet for academic purposes, social networking and other good purposes. The Internet has a good impact on the academic performance of the students
Endoscopic detorsion of sigmoid volvulus in a young female: A case report
No full textBackground: A volvulus refers to the torsion or rotational twisting of a portion of the gastrointestinal tract, with a predilection for impacting the caecum and sigmoid colon, often resulting in the development of bowel obstruction. The risk factors associated are old age, chronic fecal impaction, psychiatric disorders, colonic dysmotility, prior abdominal surgical procedures, diabetes, and Hirschsprung\u27s disease. Elderly are most commonly affected with sigmoid volvulus but there are few cases among young adults that culminate in grave complications. Although it is rare, but young individuals presenting with acute abdomen secondary to sigmoid volvulus need urgent attention. To prevent more invasive surgical procedures, endoscopic detorsion is preferred nowadays with complete recovery of patients. We present a case of young female who was successfully managed with endoscopic detorsion.Case presentation: 27 years old Asian Pakistani female presented with worsening abdominal distention, constipation and vomiting since 2 days. On examination she was afebrile, vitally stable. Abdomen was distended, tympanic percussion with generalized tenderness. Abdominal radiograph was obtained which showed dilated bowel loops followed by Computed tomography of abdomen which was suggestive of Sigmoid volvulus causing intestinal obstruction. Patient was immediately moved to endoscopy unit and endoscopic detorsion of volvulus was done. For individuals who present with sigmoid volvulus and do not exhibit signs of peritonitis or colonic gangrene, the recommended course of action involves acute endoscopic detorsion, followed by scheduled surgical intervention.Conclusion: This case report emphasizes the significance of clinicians considering sigmoid volvulus as a rare but important cause when evaluating abdominal pain in young and otherwise healthy patients. A delay in diagnosis and treatment extending beyond 48 hours leads to colonic necrosis, amplifying the associated morbidity and mortality. Swift intervention is imperative to mitigate these complications and attain a conclusive remedy
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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