1,479 research outputs found

    Semi-supervised Segmentation Fusion of Multi-spectral and Aerial Images

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    A Semi-supervised Segmentation Fusion algorithm is proposed using consensus and distributed learning. The aim of Unsupervised Segmentation Fusion (USF) is to achieve a consensus among different segmentation outputs obtained from different segmentation algorithms by computing an approximate solution to the NP problem with less computational complexity. Semi-supervision is incorporated in USF using a new algorithm called Semi-supervised Segmentation Fusion (SSSF). In SSSF, side information about the co-occurrence of pixels in the same or different segments is formulated as the constraints of a convex optimization problem. The results of the experiments employed on artificial and real-world benchmark multi-spectral and aerial images show that the proposed algorithms perform better than the individual state-of-the art segmentation algorithms.Comment: A version of the manuscript was published in ICPR 201

    Preliminary thoughts upon the policies of the Ottoman State in the 16th century Indian Ocean

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    This article aims to sketch concisely about the relationships between the Ottomans and the Portuguese pertaining to the developments in the Indian Ocean in the first half of the 16th century. The purpose of the Portuguese Kingdom to establish hegemony in the eastern seas occurred in an era when Ottoman State’s borders reached nearly the central Europe. After annexing the Mamluk Sultanate, the Ottomans expanded its borders and became adjacent to the Indian Ocean. After having great efforts to be a vigorous power in the Black, Aegean and Mediterrenean Seas from the mid of the 15th century onwards, the Ottomans gave prominence on the advancement of the navy which was considered as complementary to the conventional army in the expansion of the state. Nonetheless, there are disputed accounts among the academicians pertaining to assessment of the Ottoman sea-power against its challenge to the Portuguese sea power in terms of the developments in the Indian Ocean

    The issue of Bahasa Malayu from colonial to decolonial era

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    This paper illustrates a general picture of development of Bahasa Melayu in terms of its socializati on through out the colonial and de-colonial periods. Colonialism ought to be regarded to a larger extent, a reconstruction of the languages of the natives in their homeland. On the other hand, de-colonialism has witnessed the process of de- con str uction of existing language policies an d practices in n ewl y established nation -states. This is a process that cannot be alienated from the efforts of the colonial scholarly rulers, since they played a paramount role and functioned well pertaining to the use of Bahasa Melayu, though they did not plan for what appeared during the de- colonial era. To map the position of Bahasa Melayu during the different colonial periods, the investigation has been narrowed to certain fields focusing on the use of the language in an education system. Henceforth, it would be naïve to expect that the language issue would be settled in a short time after the independence. Wh en all steps and phases are traced, it would become clear that how the process was stressful and is still in evitably, at least to some extent, a national issue. It was during the British era and most of the post -in dependence era, that various types of policies were designed to rediscover the phenomen on of Bahasa Melayu in terms of history, sociology, culture and civilization. All the policies have played paramount roles and functioned as tools in the construction of cultural unity and nation -state formation in a successive manner. These transformations have led Bahasa Melayu to be brought into full existence normatively from a mere position of vernacular system wh ich was described as a malfunction during the colonial era. The attempts to design a national and official language are claimed as the cement of socio-political unity in the newly established nation-state. The language transformation process was smooth , in stead, it in cluded extremely challenging situations and contradictory encounters. The nation-state building during the decolonization has witnessed the growing competitiven ess between languages, not only the English and Bahasa Malayu but also Bahasa Malayu and minority languages as an expression of exoglossic policy and endoglossic policies

    Quantum Probe of Ho\v{r}ava-Lifshitz Gravity

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    Particle probe analysis of the Kehagias - Sfetsos black hole spacetime of Ho% \v{r}ava-Lifshitz gravity is extended to wave probe analysis within the framework of quantum mechanics. The timelike naked singularity that develops when ωM2<1/2\omega M^{2}<1/2, is probed with quantum fields obeying Klein-Gordon and Chandrasekhar-Dirac equations. Quantum field probe of the naked singularity has revealed that both the spatial part of the wave and the Hamiltonian operators of Klein-Gordon and Chandrasekhar-Dirac equations are essentially self-adjoint and thus, the naked singularity in the Kehagias - Sfetsos spacetime become quantum mechanically non - singular.Comment: 15 pages no figures, revised version with new title, accepted for publication in JM
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