12,679 research outputs found
Interoperability in the GENESIS 3.0 Software Federation : the NEURON Simulator as an Example
© 2013 Cornelis et al; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.Poster presented at CNS 2013Non peer reviewe
Kajian Sifat Mekanikal Dan Komposisi Elemen Batang Profil L Berbahan Ferrocement Sebagai Material Alternatif Pengganti Kayu Dan Baja
Penelitian ini bertujuan mengkaji sifat mekanikal dan komposisi elemen batang profil Lberbahan ferrocement sebagai material alternatif pengganti kayu dan baja untuk elemen –elemen struktur ringan seperti gording dan kuda-kuda untuk atap rumah sederhana. Halini berkaitan dengan isu pemanasan global (global warming) dan halnya dengan materialbaja, mengingat kendala di daerah seperti Propinsi Nusa Tenggara Timur dimana hargabaja yang semakin mahal. Material yang digunakan untuk pembuat elemen profil tersebut(sebagai alternative) adalah Ferrosemen. Pada penelitian ini, telah didapatkan beberapakarakterisktik teknis material dan elemen profil tersebut (engineering properties) yaitukarakteristik mortar yang digunakan, karakteristik tekan dan tarik. Material dasar yangdigunakan adalah pasir Takari, semen bosowa, wiremesh hexagonal Watson 3 lapis. Pasiryang digunakan adalah yang lolos No.40 ASTM. Komposisi material yang optimal(berdasarkan kekuatan dan workability) untuk membentuk ferosemen adalah pasir :semen : air = 1.4 : 1 : 0.5. Wiremesh yang digunakan 3 lapis dengan diameter kawat 0,5mm dan jarak bukaan 1,5 cm x 2,5 cm . Pengujian tekan profil L ferosemen denganpanjang 15 cm dan 30 cm menunjukkan bahwa keruntuhan material masih dominandimana pengaruh panjang elemen belum ada. Faktor koefisien kekuatan tekan mortaruntuk desain adalah 0,3735 dengan menghasilkan Safety Factor (SF)>3,0. Kekuatan tarikultimate profil terhadap kekuatan tekan ultimate profil adalah 7,07 % dan kekuatan tariklayan profil terhadap kekuatan tekan ultimate profil adalah 1,90 %. Kekuatan tekanultimate profil maksimum sebesar 77 KN (770 kg), kekuatan tarik ultimate profilmaksimum sebesar 5,7 KN (57 kg). Hal ini menunjukkan adanya kemungkinan peluangprofil ferosemen ini digunakan sebagai material alteranatif pengganti kayu atau bajauntuk elemen konstruksi atap atau rangka batang yang mengalami beban yang kecil(sederhana)
INITIAL APPLICATIONS OF FUZZY SET PROCEDURES FOR ESTIMATION OF EXPORT BASE EMPLOYMENT
Current export base methods that calculate basic and non-basic employment are too restrictive because they fail to account for uncertainty involved in the process. This paper shows the assignment of industries as either basic or non-basic by the location quotient procedure does not consistently represent the data for Nevada counties. Using fuzzy set procedures and membership functions in conjunction with the location quotient allow more flexibility in terms of matching the data for each industry in the region of interest. Using fuzzy set procedures we determine the proportion of employment that is basic and non-basic in nine non-governmental industries.Labor and Human Capital,
The Beam-Beam Interaction in the Presence of Strong Radiation Damping
The beam-beam interaction in electron-positron storage rings depends strongly on the radiation damping. It has been shown before that the achievable beam-beam tune shift (the beam-beam limit) is a function of the damping decrement (the damping rate per beam-beam interaction). The LEP collider has been operated and has delivered luminosity in the range of 45 GeV to 101 GeV. The beam-beam performance data from LEP is revisited and fitted with a simple model. The scaling of the beam-beam limit with the damping decrement is estimated
Wind Power Development: Opportunities and Challenges
In this study, the prospects of wind power at the global level are reviewed. Existing studies indicate that the earth’s wind energy supply potential significantly exceeds global energy demand. Yet, only 1% of the global electricity demand is currently derived from wind power despite 40% annual growth in wind generating capacity over the last 25 years. More than 98% of total current wind power capacity is installed in the developed countries plus China and India. Existing studies estimate that wind power could supply 7% to 34% of global electricity needs by 2050. Wind power faces a large number of technical, financial, institutional, market and other barriers. To overcome these, many countries have employed various policy instruments, including capital subsidies, tax incentives, tradable energy certificates, feed-in tariffs, grid access guarantees and mandatory standards. Besides these policies, climate change mitigation initiatives resulting from the Kyoto Protocol (e.g., CO2-emission reduction targets in developed, the Clean Development Mechanism in developing countries) have played a pivotal role in promoting wind power.wind energy, renewable energy, electricity grids
Multi-modal dictionary learning for image separation with application in art investigation
In support of art investigation, we propose a new source separation method
that unmixes a single X-ray scan acquired from double-sided paintings. In this
problem, the X-ray signals to be separated have similar morphological
characteristics, which brings previous source separation methods to their
limits. Our solution is to use photographs taken from the front and back-side
of the panel to drive the separation process. The crux of our approach relies
on the coupling of the two imaging modalities (photographs and X-rays) using a
novel coupled dictionary learning framework able to capture both common and
disparate features across the modalities using parsimonious representations;
the common component models features shared by the multi-modal images, whereas
the innovation component captures modality-specific information. As such, our
model enables the formulation of appropriately regularized convex optimization
procedures that lead to the accurate separation of the X-rays. Our dictionary
learning framework can be tailored both to a single- and a multi-scale
framework, with the latter leading to a significant performance improvement.
Moreover, to improve further on the visual quality of the separated images, we
propose to train coupled dictionaries that ignore certain parts of the painting
corresponding to craquelure. Experimentation on synthetic and real data - taken
from digital acquisition of the Ghent Altarpiece (1432) - confirms the
superiority of our method against the state-of-the-art morphological component
analysis technique that uses either fixed or trained dictionaries to perform
image separation.Comment: submitted to IEEE Transactions on Images Processin
X-ray image separation via coupled dictionary learning
In support of art investigation, we propose a new source sepa- ration method
that unmixes a single X-ray scan acquired from double-sided paintings. Unlike
prior source separation meth- ods, which are based on statistical or structural
incoherence of the sources, we use visual images taken from the front- and
back-side of the panel to drive the separation process. The coupling of the two
imaging modalities is achieved via a new multi-scale dictionary learning
method. Experimental results demonstrate that our method succeeds in the
discrimination of the sources, while state-of-the-art methods fail to do so.Comment: To be presented at the IEEE International Conference on Image
Processing (ICIP), 201
Wind power development : economics and policies
This study reviews the prospects of wind power at the global level. Existing studies indicate that the earth's wind energy supply potential significantly exceeds global energy demand. Yet, only 1 percent of the global electricity demand is currently derived from wind power despite 40 percent annual growth in wind generating capacity over the past 25 years. More than 98 percent of total current wind power capacity is installed in the developed countries plus China and India. It has been estimated that wind power could supply 7 to 34 percent of global electricity needs by 2050. However, wind power faces a large number of technical, economic, financial, institutional, market, and other barriers. To overcome these barriers, many countries have employed various policy instruments, including capital subsidies, tax incentives, tradable energy certificates, feed-in tariffs, grid access guarantees and mandatory standards. Besides these policies, climate change mitigation initiatives resulting from the Kyoto Protocol (e.g., CO2-emission reduction targets in developed countries and the Clean Development Mechanism in developing countries) have played a significant role in promoting wind power.Energy Production and Transportation,Carbon Policy and Trading,Windpower,Environment and Energy Efficiency,Energy and Environment
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