192,932 research outputs found
Geometric proposals for faster R-CNN
No full textFaster R-CNN has established itself as the de-facto best object detector but it remains strongly limited in two aspects: (i) it is sensitive to background clutter and its classification performance decreases when it is confronted with more noisy proposals; (ii) it suffers when the objects vary largely in scale and specifically for the small objects. We address both issues with our geometric-proposals for Faster R-CNN (GP-FRCNN), whereby we re-rank the generic object proposals with an approximate geometric estimate of the scene. But the devil is in the details: the simple extension requires involved scale adjustments (e.g. anchors, layer resolution) which we detail in this paper. Finally, our GP-FRCNN performs equally well on smaller and larger objects, a long standing challenge for any object detection algorithm. The application of GP-FRCNN to surveillance videos is straightforward and does not require an explicit geometric formulation. We extensively test the model on the UA-DETRAC dataset, where GP-FRCNN outperforms the standard Faster R-CNN by 19%
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
Dataset in support of the Southampton doctoral thesis 'Flexible Thermoelectric Energy Generators for E-textiles'
No full textThe dataset collected in the research thesis of "Flexible Thermoelectric Energy Generators for E-textiles". Contains SEM images, EDX elemental analysis and XRD crystal lattice characterisations. Additionally, the dataset contains hall probe and thermoelectric data and device power outputs and thermal images of devices at different thermal gradients. Data used in the dataset contributed to the publication:
“Screen-printed Bismuth telluride nanostructured composites for flexible thermoelectric
applications” A. Amin, R. Huang, D. W. Newbrook, V. Sethi, S. P. Beeby and I. S. Nandhakumar, J.
Phys. Energy, , DOI:10.1088/2515-7655/ac572e.
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PENGARUH PENGGUNAAN METODE PAIKEM TERHADAP MINAT BELAJAR MATA PELAJARAN AL-QUR’AN HADITS SISWA KELAS VIII DI MTs AL-AMIN PALUR: SISWA KELAS VIII DI MTs AL-AMIN PALUR
No full textThe purpose of this study was to determine the effect of PAIKEM method on the learning interest of class VIII students at MTs Al-Amin Palur. This type of research is quantitative in which the research subject is MTs Al-Amin Palur. The independent variable (Variable X) of this research is the PAIKEM method, while the dependent variable (Variable Y) is learning interest. The research population was all VIII grade students at MTs Al-Amin Palur which amounted to 20 students, so the sample of this study was all of the total population. Researchers collected data using an instrument in the form of a questionnaire consisting of 30 items of statement questions. In testing the validity, researchers used the product moment validity test and testing the reliability of researchers using the alpha cronbanch reliability test, in addition to using a questionnaire, researchers also used the documentation study method in data collection. The results showed that there was an influence between PAIKEM methods on the learning interest of VIII grade students at MTs Al-Amin Palur. Judging from the test results using product moment, the value of r count is 0.803 and the value of r table is 0.444. This means that r count> r table. So H0 is rejected so that there is a significant influence of PAIKEM method on the interest in learning of class VIII students at MTs Al-Amin Palur.Tujuan dari penelitian ini adalah untuk mengetahui pengaruh metode PAIKEM terhadap minat belajar siswa kelas VIII di MTs Al-Amin Palur. Jenis penelitian ini adalah kuantitatif yang mana subjek penelitian di MTs Al-Amin Palur. Variabel bebas (Variabel X) penelitian ini adalah metode PAIKEM, sedangkan variabel terikatnya (Variabel Y) adalah minat belajar. Populasi penelitian yaitu seluruh siswa kelas VIII di MTs Al-Amin Palur yang berjumlah 20 siswa, maka sampel dari penelitian ini adalah seluruh dari total populasi yang ada. Peneliti mengumpulkan data menggunakan instrumen berupa angket yang terdiri dari 30 item soal pernyataan. Dalam pengujian validitas, peneliti menggunakan uji validitas product moment dan pengujian reliabilitas peneliti menggunakan uji reliabilitas alpha cronbanch, selain menggunakan angket, peneliti juga menggunakan metode studi dokumentasi didalam pengumpulam data. Hasil penelitian menunjukkan bahwa terdapat pengaruh antara metode PAIKEM terhadap minat belajar siswa kelas VIII di MTs Al-Amin Palur. Dilihat dari hasil uji menggunakan product moment hasil nilai r hitung sebesar 0,803 dan nilai r table sebesar 0,444. Artinya r hitung > r table. Maka H0 ditolak sehingga terdapat pengaruh yang Signifikan metode PAIKEM terhadap minat belajar siswa kelas VIII di MTs Al-Amin Palur
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Conceptual metaphor meets conceptual change
No full textThis paper argues that the metaphorical representation of concepts and the appropriation of language-based construals can be hypothesized as additional sources of conceptual change alongside those previously proposed. Analyses of construals implicit in the lay and scientific use of the noun energy from the perspective of the theory of conceptual metaphor are summarized. The experientially grounded metaphorical construals identified in both uses help conceptualize the shift from the concrete, naïve to the abstract, scientific understanding of energy. The case of the concept of energy motivates the more general hypothesis that an important part of learning a highly abstract (even mathematical) concept is the appropriation of experientially grounded metaphorical construals implicit in scientific discourse. Pedagogical implications of this proposal are discussed. © 2009 S. 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Encounters with Idi Amin
No full textThis constitutes personal reflections about living in Kenya during the time of Uganda dictator Idi Amin, and of a encounter with his renegade soldiers in Kampala, Uganda.https://deepblue.lib.umich.edu/bitstream/2027.42/110665/1/EncountersWithAmin.pd
Cytotoxic effects of Jay Amin hydroxamic acid (JAHA), a ferrocene-based class I histone deacetylase inhibitor, on triple-negative MDA-MB231 breast cancer cells
No full textThe histone deacetylase inhibitors (HDACis) are a class of chemically heterogeneous anticancer agents of which suberoylanilide hydroxamic acid (SAHA) is a prototypical member. SAHA derivatives may be obtained by three-dimensional manipulation of SAHA aryl cap, such as the incorporation of a ferrocene unit like that present in Jay Amin hydroxamic acid (JAHA) and homo-JAHA [ Spencer, et al. (2011) ACS Med. Chem. Lett.2, 358-362 ]. These metal-based SAHA analogues have been tested for their cytotoxic activity toward triple-negative MDA-MB231 breast cancer cells. The results obtained indicate that of the two compounds tested, only JAHA was prominently active on breast cancer cells with an IC 50 of 8.45 μM at 72 h of treatment. Biological assays showed that exposure of MDA-MB231 cells to the HDACi resulted in cell cycle perturbation with an alteration of S phase entry and a delay at G2/M transition and in an early reactive oxygen species production followed by mitochondrial membrane potential (MMP) dissipation and autophagy inhibition. No annexin binding was observed after short- (5 h) and longer (24 and 48 h) term incubation with JAHA, thereby excluding the promotion of apoptosis by the HDACi. Although caution must be exercised in extrapolation of in vitro results to the in vivo situation for which research on animals and human trials are needed, nevertheless JAHA treatment possesses the potential for its development as an agent for prevention and/or therapy of "aggressive" breast carcinoma, thus prompting us to get more insight into the molecular basis of its antibreast cancer activity
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