5,099 research outputs found
Multi-objective pareto optimal power quality improvement in distribution systems
No full textThe present study proposes a multi-objective optimized Electric Spring (ES) operation to improve the voltage regulation and overall power quality in a distribution system. A suitable controller has been designed for the ES implementing the Multi-objective artificial cooperative search (MOACS) optimization algorithm. The objectives are to enhance the system power factor, regulate the critical load voltage, and minimize the neutral current. The proposed technique provides satisfactory results with intermittent energy source also. The performance of MOACS has been compared with particle swarm optimization (PSO) and harmony search (HS) algorithms. It has been observed that the improvement in power factor and reduction of neutral current is much more with MOACS compared to PSO and HS. The power quality factors obtained with PSO are 0.9136, 0.9257, and 0.9146 for three different sets of loads, whereas, with HS, these values are 0.9072, 0.9324, and 0.8985. The same index improves to 0.9465, 0.9392, and 0.9307 with MOACS, which proves the efficacy of MOACS algorithm. The validation of the proposed scheme through real-time simulation confirms the reliability of this scheme
United They Fall: Why the International Community Should Not Promote Military Integration after Civil War
No full textThe single strongest predictor of civil war is a nation having had one in the past, and preventing the recurrence of civil war has thus become the critical problem for both scholarship and policy. The conventional wisdom urges the creation of capable, legitimate, and inclusive postwar states to reduce the risk of relapse into civil war, and international peacebuilders have often encouraged the formation of a new national army including members of the war’s opposing sides. However, military integration has received little theoretical or empirical attention. Filling that gap, we argue that both the theoretical logics and the empirical record identifying military integration as a significant contributor to durable post-civil war peace are weak. Our analysis of eleven cases finds little evidence that military integration played a substantial causal role in preventing the return to civil war and little support for the likely causal mechanisms. Military integration does not usually send a costly signal of the parties’ commitment to peace, provide communal security, employ many possible spoilers, or act as a powerful symbol of a unified nation. We conclude that it is both unwise and unethical for the international community to press military integration on reluctant local forces.Based in part on a larger collective project: Roy Licklider (Ed.). (2014). New Armies from Old: Merging Competing Military Forces after Civil Wars. Washington, D.C.: Georgetown University Press; see http://press.georgetown.edu/book/georgetown/new-armies-old
Ekla Chalo Re: a tribute to Ms. Mary Roy
No full text
This is a tribute to activist Mary Roy, who passed away in 2022. The author traces the life of Mary Roy, highlighting the ways in which she challenged gendered norms and expectations. She was the applicant in a landmark case which brought equal property rights for Syrian Christian women in India. The author reminds readers that women's rights are human rights and change begins with us. 
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Yunnan (China), men with the cow caravan
No full textA cow caravan.Image is part of research conducted by Roy Chapman Andrews for the article: Traveling in China's Southland
Author(s): Roy Chapman Andrews
Source: Geographical Review, Vol. 6, No. 2 (Aug., 1918), pp. 133-146
Published by: American Geographical Society
Stable URL: http://www.jstor.org/stable/207476http://www.jstor.org/stable/207476Grayscal
Yunnan (China), cow loaded with grass and carrying a bell
No full textA cow loaded with grass and carrying a bell.Image is part of research conducted by Roy Chapman Andrews for the article: Traveling in China's Southland
Author(s): Roy Chapman Andrews
Source: Geographical Review, Vol. 6, No. 2 (Aug., 1918), pp. 133-146
Published by: American Geographical Society
Stable URL: http://www.jstor.org/stable/207476http://www.jstor.org/stable/207476Grayscal
Yunnan (China), women carrying salt from one of the large wells
No full textWomen carrying salt from one of the large wells.Image is part of research conducted by Roy Chapman Andrews for the article: Zoological Explorations in Yunnan Province, China
Author(s): Roy Chapman Andrews
Source: Geographical Review, Vol. 6, No. 1 (Jul., 1918), pp. 1-18
Published by: American Geographical Society
Stable URL: http://www.jstor.org/stable/207446http://www.jstor.org/stable/207446Grayscal
Type II band alignment in InAs zinc-blende/wurtzite heterostructured nanowires
No full textIn this article we demonstrate type-II band alignment at the wurtzite/zinc-blende hetero-interface in InAs polytype nanowires using resonance Raman measurements. Nanowires were grown with an optimum ratio of the above mentioned phases, so that in the electronic band alignment of such NWs the effect of the difference in the crystal structure dominates over other perturbing effects (e.g. interfacial strain, confinement of charge carriers and band bending due to space charge). Experimental results are compared with the band alignment obtained from density functional theory calculations. In resonance Raman measurements, the excitation energies in the visible range probe the band alignment formed by the E 1 gap of wurtzite and zinc-blende phases. However, we expect our claim to be valid also for band alignment near the fundamental gap at the heterointerface
Internal field induced enhancement and effect of resonance in Raman scattering of InAs nanowires
No full textImmobile History: An Interview with Emmanuel Le Roy Ladurie
No full textThe author spoke with renowned French historian Emmanuel Le Roy Ladurie about Computers, Geography and History. Le Roy Ladurie was the "standard bearer" of the third generation of the French Annales school, a group of French intellectuals that combined different disciplines such as history, geography, anthropology, and more to delve into social history
Regional integration fifty years after the treaty of Rome. The EU, Asia, Africa and the Americas.
No full textThe European Union has been the pioneer and undisputed
leader of regional integration processes. Since its inception in
the 1950s, following the Schuman Declaration that set in motion
Jean Monnet’s innovative idea to join together European coal
and steel industries, Europe has offered a useful model for
regional integration. Strengthened by the 1957 Treaty of Rome
(exactly half a century ago), this bold entity was later transformed
into the European Union by the Maastricht Treaty.
Having successfully accomplished its primary goal (“to make
war unthinkable and materially impossible”), the EU is currently
facing challenges associated with its expansion and the deepening
of its pooled sovereignty. On the other hand, the effects
of the EU in international relations are of paramount relevance.
While the forceful transposition of national and regional structures
into other regions is a historical error, the essence of the
EU as a model to be adapted by other regions is a viable
approach to enhance stability and welfare. In this regard, this
volume examines the current challenges of the EU and the perspectives
of regional integration in Africa, Asia and Latin
America
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