Assessing the quality of textual features in social media     

Flavio Figueiredo  Henrique Pinto  Fabiano Belém  Jussara Almeida  Marcos Gonçalves  David Fernandes  Edleno Moura 《Information processing & management》2013

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MENTAL MODELS ABOUT SEISMIC EFFECTS: STUDENTS’ PROFILE BASED COMPARATIVE ANALYSIS     

Sara Moutinho  Rui Moura  Clara Vasconcelos 《International Journal of Science and Mathematics Education》2016,14(3):391-415

Nowadays, meaningful learning takes a central role in science education and is based in mental models that allow the representation of the real world by individuals. Thus, it is essential to analyse the student’s mental models by promoting an easier reconstruction of scientific knowledge, by allowing them to become consistent with the curricular models presented in the classroom. In this context, the study aims to examine, through the application of a diagnostic instrument (Two-Tier Diagnostic Test), what students consider to be the seismic effects on soils and buildings, to analyse and to compare their mental models about some of these issues related to seismology, applying a questionnaire to 52 students from a Portuguese University attending an undergraduate degree in Geology and a master course in Biology and Geology teaching. The analysis of the data allowed concluding that undergraduate students have more inconsistent mental models than master students, mainly concerning the factors which influence the seismic risk, such as hazard and vulnerability, and the soils characteristics which influence the intensity of earthquakes. During their academic formation in the university, teachers present some curricular models to students which allow them to reconstruct their mental models and turn them scientifically consistent, enhancing the educational implications of this study that points to the need for teachers to be aware of the importance of the diagnosis of the students’ mental models and to promote meaningful learning and scientific literacy autonomously and dynamically.  相似文献   

EVALUATION OF A TRUANCY DIVERSION PROGRAM AT NINE AT‐RISK MIDDLE SCHOOLS     

Courtney M. Haight  Gillian V. Chapman  Marisa Hendron  Rachel Loftis  Christopher A. Kearney 《Psychology in the schools》2014,51(7):779-787

Many schools are faced with the prospect of soaring absenteeism rates, despite the use of traditional truancy courts and other legal interventions. A recent trend in the literature has been to explore alternative, hybrid, and multidisciplinary approaches to address the underlying obstacles to school attendance. These programs are often integrated into schools to reduce stigma and transportation burdens on families. The present study involved an evaluation of a truancy diversion program in nine at‐risk middle schools in an ethnically diverse sample. Graduates from the program demonstrated significant declines in internalizing and externalizing behavior problems. In addition, participants and their parents expressed high levels of perceived improvement in academic performance. Academic tutoring was found to differentiate program graduates from nongraduates. Results are preliminary but discussed within the context of the role of school attachment in truancy diversion programs.  相似文献   

Ultrasonic phased array technology for the non-destructive testing of marble sculptures     

Frank Tiefensee  Peter Weber  Simon Kunz  Marisa Pamplona  Stefan Simon 《文物保护研究》2017,62(1):55-60

The medical ultrasonic phased array technology was modified for the non-destructive testing of marble sculptures and the feasibility of the approach was evaluated. For this purpose, 1?MHz, 64-channel phased array electronic and phased array transducers were developed. The specifications of the electronics and the transducers are presented and discussed. Ultrasound images of inner structures of a marble sculpture are presented. The problem of the acoustic matching layers for different states of deterioration is discussed and the developments in view of a suitable matching layer solution are presented. This matching layer is combined with a new coupling technique that protects the marble surface. The results of experiments on ultrasound phantoms and on a marble sculpture are presented.  相似文献   

Latin America: The battle between borrowing and creating     

Claudio de Moura Castro 《Prospects》1997,27(1):109-122

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Physiological responses at the lactate-minimum-intensity with and without prior high-intensity exercise     

Alessandro Moura Zagatto  Johnny Padulo  Adelino Ramos Sanchez da Silva  Paulo de Tarso Guerrero Müller  Willian Eiji Miyagi  Claudio Alexandre Gobatto 《Journal of sports sciences》2016,34(21):2106-2113

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Halite – A new calibration material for microdrilling resistance measurements     

Marisa Pamplona  Mathias Kocher  Rolf Snethlage 《Journal of Cultural Heritage》2010,11(2):180-184

This paper aims at proposing a new calibration material for microdrilling resistance measurements. Microdrilling resistance is a microdestructive method mainly used in built heritage in order to determine the strength profile in depth. This method is suitable to detect changes in the material cohesion, either due to a different state of preservation or to the action of a consolidant. Calibration materials are often used in microdrilling measurements in order to characterise the drill bit initial value and to correct the variations existing within the initial values of a set of drill bits. Calibration materials are also useful to detect the wear effect on a drill bit due to an abrasive stone. Moreover, such materials can be used for comparing results obtained with different microdrilling machines. In this work, halite was chosen to be tested as a calibration material due to its properties, as low hardness and isotropy. Halite single crystals and halite salt stone from different provenances were tested in order to evaluate the suitability of this material to the requests of a calibration material for microdrilling resistance applications, as for instance being homogeneous, non-abrasive, sensitive and available worldwide. Experimental results show that halite from different provenances is very homogeneous, especially in the crystalline form. This form of halite is slightly more expensive than stone halite; however its costs are comparable to ARS and significantly lower than Macor (other calibration materials commonly used for microdrilling resistance measurements). Due to the advantages of halite for calibration purposes, this material should be further tested by other authors in order to validate our conclusions.  相似文献   

Adding Compression to Block Addressing Inverted Indexes   总被引：8，自引：1，他引：7  

Gonzalo Navarro  Edleno Silva de Moura  Marden Neubert  Nivio Ziviani  Ricardo Baeza-Yates 《Information Retrieval》2000,3(1):49-77

Inverted index compression, block addressing and sequential search on compressed text are three techniques that have been separately developed for efficient, low-overhead text retrieval. Modern text compression techniques can reduce the text to less than 30% of its size and allow searching it directly and faster than the uncompressed text. Inverted index compression obtains significant reduction of its original size at the same processing speed. Block addressing makes the inverted lists point to text blocks instead of exact positions and pay the reduction in space with some sequential text scanning.In this work we combine the three ideas in a single scheme. We present a compressed inverted file that indexes compressed text and uses block addressing. We consider different techniques to compress the index and study their performance with respect to the block size. We compare the index against three separate techniques for varying block sizes, showing that our index is superior to each isolated approach. For instance, with just 4% of extra space overhead the index has to scan less than 12% of the text for exact searches and about 20% allowing one error in the matches.  相似文献   

Student Support and Advising in a New Online Ed.D. of Instructional Systems Technology Program: A design case     

Marisa Exter  Nilufer Korkmaz  Elizabeth Boling 《TechTrends》2014,58(4):36-44

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p38 MAPK Inhibitor (SB203580) and Metformin Reduces Aortic Protein Carbonyl and Inflammation in Non-obese Type 2 Diabetic Rats     

Nuttikarn Nokkaew  Podsawee Mongkolpathumrat  Ruttanapong Junsiri  Supawit Jindaluang  Nichagron Tualamun  Niya Manphatthanakan  Nareumon Saleesee  Marisa Intasang  Jantira Sanit  Punyanuch Adulyaritthikul  Kantapich Kongpol  Sarawut Kumphune  Nitirut Nernpermpisooth 《Indian journal of clinical biochemistry : IJCB》2021,36(2):228

Microvascular and macrovascular diseases are the main causes of morbidity in type 2 diabetes patients through chronic hyperglycaemic condition via oxidative stress and inflammation. Reactive oxygen species (ROS) activate p38 MAPK phosphorylation and inflammation which enhances protein modification by carbonylation. The use of metformin and a p38 MAPK inhibitor is hypothesised to reduce ROS production and inflammation but effects of metformin and p38 MAPK inhibitor (SB203580) on ROS production and inflammation in vascular type 2 diabetes mellitus non-obese (T2DM) have not been investigated. The Goto-Kakizaki rat T2DM model was divided into three groups as T2DM, T2DM treated with 15 mg/kg bw metformin and T2DM treated with 2 mg/kg bw SB203580 for 4 weeks. Rat aortas were isolated and protein carbonyl (PC) contents were measured by spectrophotometric DNPH assay. Aortic IL-1ß level was determined by ELISA. Results showed that aortic PC contents in the T2DM group were significantly higher than in non-diabetic rats. Treatment with metformin or SB203580 significantly reduced PC contents while only metformin significantly reduced IL-1ß levels. Findings indicated that metformin reduced ROS production and inflammation in diabetic vessels and possibly reduce vascular complications in non-obese T2DM.  相似文献