890 resultados para War, Declaration of.
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The discovery of a non-reproductive soldier caste in a clonally reproducing trematode greatly extends the taxonomic distribution of eusociality and reaffirms the importance of relatedness in the evolution of reproductive altruism.
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Tribal war occurs when a coalition of individuals use force to seize reproduction-enhancing resources, and it may have affected human evolution. Here, we develop a population-genetic model for the coevolution of costly male belligerence and bravery when war occurs between groups of individuals in a spatially subdivided population. Belligerence is assumed to increase an actor's group probability of trying to conquer another group. An actor's bravery is assumed to increase his group's ability to conquer an attacked group. We show that the selective pressure on these two traits can be substantial even in groups of large size, and that they may be driven by two independent reproduction-enhancing resources: additional mates for males and additional territory (or material resources) for females. This has consequences for our understanding of the evolution of intertribal interactions, as hunter-gatherer societies are well known to have frequently raided neighbouring groups from whom they appropriated territory, goods and women.
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This essay examines the American Civil War of 1861 – 1865, which is also known as the bloodiest war that the United States has ever experienced. The pretext for the war was the abolition of slavery in the South, and after many battles the Southern states lost: as a consequence, they experienced major changes in their economic and social life. This interesting piece from American history can be traced out throughout the characters’ lives in the novel Gone with the Wind which has been thoroughly analyzed in order to draw nearer and to comprehend the changes in the Southern way of life before and after the war. The author, Margaret Mitchell, was born in Atlanta, Georgia, and grew up with the stories about the war. As a result, Gone with the Wind studies not only its causes, but also the years after its end – a period which is not generally a subject of history and receives little attention – and the effects that such reversals have on former planters and slaves. From the position of contemporaneity, the reader can see that such changes in a society do not end with the laying down of an act, or in this case the end of the war, but they continue during many years; thus, the modern world can draw conclusions and lessons for events that are happening at the moment.
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This paper analyzes the role of formalization of land property rights in the war against illicit crops in Colombia. We argue that as a consequence of the increase of state presence and visibility during the period of 2000 and 2009, municipalities with a higher level of formalization of their land property rights saw a greater reduction in the area allocated to illicit crops. We hypothesize that this is due to the increased cost of growing illicit crops on formal land compared to informal, and due to the possibility of obtaining more benets in the newly in- stalled institutional environment when land is formalized. We exploit the variation in the level of formalization of land property rights in a set of municipalities that had their rst cadastral census collected in the period of 1994-2000; this selection procedure guarantees reliable data and an unbiased source of variation. Using fixed effects estimators, we found a signicant negative relationship between the level of formalization of land property rights and the number of hectares allocated to coca crops per municipality. These results remain robust through a number of sensitivity analyses. Our ndings contribute to the growing body of evidence on the positive effects of formal land property rights, and e ective policies in the war on drugs in Colombia.
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Tässä tutkimuksessa käsitellään heavy metal -kappaleiden sanoitusten sisältöä. Tutkimusmateriaaliin on valittu yksi teema, sota, jonka avulla avataan sanoitusten sisältöä ja merkitystä. Metallimusiikki alakulttuurina on tyylillisesti ja temaattisesti spesifi, ja sillä on omat musiikilliset tavoitteensa. Tässä tutkimuksessa tarkastellaan erityisesti sitä miten sotaa kritisoidaan tai perustellaan heavy rock -sanoituksissa. Tutkimusmateriaalini koostuu 29 englanninkielisen kappaleen sanoituksesta vuosilta 1970–2012. Edustettuina on useita ajanjaksoja sekä maita. Yhdistävänä tekijänä on englannin kielen lisäksi se, että kaikki sanoitukset käsittelevät modernia länsimaista sodankäyntiä. Tekstit valittiin sen perusteella, että niissä ilmeni positiivinen tai negatiivinen näkökulma sotaan. Tutkimus nojaa Theo van Leeuwenin legitimaatioteoriaan, joka puolestaan pohjautuu diskurssianalyysiin. Legitimaatioteoria käsittää neljä strategiaa, jotka voivat joko kritisoida tai perustella sosiaalisia käytänteitä. Ne ovat auktoriteetteihin vetoaminen, moraalinen arviointi, järkeistäminen ja mytopoeesi. Yksi tavoitteistani tutkimuksessani on selvittää legitimaatioteorian toimivuutta omassa materiaalissani. Käytän metodina lähilukua, joka mahdollistaa niiden sanojen ja ilmaisujen identifioimisen, jotka ovat näkökulmaltaan joko positiivisesti tai negatiivisesti sotaan suhtautuvia. Analyysini kannalta tärkeitä ovat sekä kieli- että kulttuurikonteksti, sillä ne määrittelevät sanojen merkityksen. Analyysin perusteella kävi ilmi, että esimerkit jakautuivat eri strategioiden välille hyvin epätasaisesti. Auktoriteetteihin vetoamisen strategiasta löytyi vain yksi esimerkki, kun taas moraalisen arvioinnin esimerkkejä oli neljätoista. Lisäksi kaikkia legitimaatioteorian alaryhmiä ei löytynyt materiaalista ollenkaan. Osalla alaryhmistä oli useita esiintymiä, mutta osalla vain yksi. Esimerkkien epätasaista jakautumista selittää mm. se, että tutkimuksen materiaalin kannalta kaikki alakategoriat eivät ole relevantteja. Jotta tutkimustuloksista saataisiin edustavampi, laajempi otanta olisi tarpeen. Legitimaatioteorian soveltuvuutta sanoituksien yhteydessä tulisi tutkia laajemmin.
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Ever since Siad Barre’s regime was toppled in the beginning of the 1990’s Somalia has been without an effective central government. As a result Somalia has remained in an anarchic condition of state collapse for nearly two decades. This anarchy has often been put forward as a potential breeding ground for terrorism. As a response to this threat the United States has undertaken several policies, initiatives, and operations in the Horn of Africa generally and in Somalia specifically. In this descriptive study a twofold analysis has been undertaken. First, conditions in present day Somalia as well as Somali history have been analyzed to evaluate the potential Somalia holds as a terrorist base of operations or a recruiting- or staging area. Second, US strategies and actions have been analyzed to evaluate the adequacy of the US response to the threat Somalia poses in terms of terrorism. Material for the analyses have been derived from anthropological, political, and security studies dealing with Somalia. This material has been augmented by a wide range of news coverage, western and non-western. Certain different US policy documents from different levels have been chosen to represent US strategies for the Global War on Terrorism. Because Somali social institutions, such as the clan system, hold great weight in Somali society, Somalia is a difficult area of operations for terrorist networks. In addition the changing nature of Somali alliances and the tangled webs of conflict that characterize present day Somalia aggravate the difficulties that foreign terrorist networks would encounter in Somalia, would they choose to try to utilize it in any great extent. The US has taken potential terrorism threats in Africa and specifically Somalia very seriously. US actions in Somalia have mainly focused on apprehending or neutralizing terror suspects. Such policies, coupled with backing the Ethiopian invasion of Somalia may have actually turned out increasing Somalia’s terror potential.
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The recent emergence of a new generation of mobile application marketplaces has changed the business in the mobile ecosystems. The marketplaces have gathered over a million applications by hundreds of thousands of application developers and publishers. Thus, software ecosystems—consisting of developers, consumers and the orchestrator—have emerged as a part of the mobile ecosystem. This dissertation addresses the new challenges faced by mobile application developers in the new ecosystems through empirical methods. By using the theories of two-sided markets and business ecosystems as the basis, the thesis assesses monetization and value creation in the market as well as the impact of electronic Word-of-Mouth (eWOM) and developer multihoming— i. e. contributing for more than one platform—in the ecosystems. The data for the study was collected with web crawling from the three biggest marketplaces: Apple App Store, Google Play and Windows Phone Store. The dissertation consists of six individual articles. The results of the studies show a gap in monetization among the studied applications, while a majority of applications are produced by small or micro-enterprises. The study finds only weak support for the impact of eWOM on the sales of an application in the studied ecosystem. Finally, the study reveals a clear difference in the multi-homing rates between the top application developers and the rest. This has, as discussed in the thesis, an impact on the future market analyses—it seems that the smart device market can sustain several parallel application marketplaces.
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Kartta kuuluu A. E. Nordenskiöldin kokoelmaan