Kind Of Migration Research Articles

Karaburun Yarımadası (İzmir) Kırsal Mimarlık Envanteri 2004 Yılı Çalışmaları: Çullu ve Hisarcık Köyleri

Karaburun Peninsula (Izmir) Rural Architecture Inventory project has been developed as a result of the field studies carried out throughout the Peninsula in the years 2002 and 2003. The aim of this project, undertaken within the Cultural Inventory Project of Turkish Academy of Sciences beginning from the year 2004, is to explore and document the architectural heritage of Karaburun Peninsula. The area of inventory is the part of the Peninsula remaining within the borders of Karaburun district. The rural settlements located in this geography, some of which are deserted and some of which are partially inhabited, will be studied within defined sub-regions. At the settlement scale, besides the settlement patterns, public buildings, water­ways and water constructions, industrial buil­dings such as olive mills and traditional houses have been documented in detail. The geographical framework of the project has been enlarged to a broader scale in order to comprehend the interrelations between the Peninsula and the Aegean islands throug­hout history. This approach will provide es­sential clues for understanding the settle­ments and the buildings. The interrelations between the island of Chios, Cesme, Foca and Izmir formed the history of Karaburun Peninsula extending as a wall between the Aegean Sea and the Gulf of Izmir, Accor­dingly, in spite of its mountainous topography and limited agricultural production areas, the Peninsula became the homeland of peoples coming from both Anatolia and the Aegean islands. Having been a scene of different kinds of migrations and settlings, this geography has a multicultural heritage. In the analyses, historical and geographical sources concerning the region, official documents of the Ottoman period, memories and experiences of the inhabitants and the architectural heritage itself will be considered. The sub-region where the inventory project has been started is located in the northeast of the Peninsula. Ambarseki, Saip, Karaburun (Ahurlu), Cullu and Hisarcik are the settle­ments of this region situated respectively on a line extending from southeast to northwest. The villages of Cullu and Hisarcik were deserted after the earthquake in 1949 and almost entirely destroyed after the evacuation of the villages. During the Field studies carried out in Cullu and Hisarcik in the year2004, preliminary restitution plans of the settlements were prepared; public buildings, traditional houses and construction techni­ques were documented and interviews with inhabitants of the villages currently living in Karaburun were recorded.

Global Migration, 1846–1940

European migrations to the Americas and Australia have often been noted as an important part of world history, but movements to the frontiers, factories, and cities of Asia and Africa have largely been overlooked. This paper will show that migrations to northern and southeastern Asia were comparable in size and demographic impact to the transatlantic flows and followed similar cycles of growth and contraction. These migrations were all part of an expanding world economy, and a global perspective suggests ways in which that economy extended beyond direct European intervention. A global perspective also compels us to extend the traditional ending point for the era of mass migration from 1914 to 1930, and to be more aware of how political intervention has shaped the world into different migration systems and led scholars to wrongly assume that these systems reflect categorically different kinds of migration.

Statistical properties of exoplanets

Among the hundred or so extrasolar planets discovered to date, 19 are orbiting a component of a double or multiple star system. In this paper, we discuss the properties of these planets and compare them to the characteristics of planets orbiting isolated stars. Although the sample of planets found in multiple star systems is not large, some differences between the orbital parameters and the masses of these planets and the ones of planets orbiting single stars are emerging in the mass-period and in the eccentricity-period diagrams. As pointed out by [CITE], the most massive short-period planets are all found in multiple star systems. We show here that the planets orbiting in multiple star systems also tend to have a very low eccentricity when their period is shorter than about 40 days. These observations seem to indicate that some kind of migration has been at work in the history of these systems. The properties of the five short-period planets orbiting in multiple star systems seem, however, difficult to explain with the current models of planet formation and evolution, at least if we want to invoke a single mechanism to account for all the characteristics of these planets.

My Community, My History, My Practice

I was barely beginning to navigate the strange world of UC Berkeley when I had to choose which community testimonies I was to record. It was spring 1995, and I was enrolled in a Comparative Ethnic Studies research seminar. Professor Julia Curry Rodriguez was asking for commitment right from the start for her Oral History and Immigrant Communities course: what immigrant community was each one of us going to study? Because I am an immigrant by trade, part of the Salvadoran exodus to the U.S. of the 1980s, I thought my decision would be obvious: Salvadorans in San Francisco. But the choice was really not going to be that easy. A different kind of migration had actually taken me to the San Francisco Bay Area then, one related to my having come out as a gay man three years earlier in Los Angeles. Though I did not admit to it then, graduate work at Berkeley was part of an excuse to be in San Francisco, that queerest of Meccas for the modern gay man. While I navigated Berkeley, I was also negotiating San Francisco: its people, its politics, its excitement, its AIDS epidemic, its racism, and my relation to all of it. I actually, then, had another choice for my oral history project: queer Latina and Latino history in the Bay Area, and the role migrants and immigrants like me have played together in building it. But I am jumping ahead of my story, for my commitment to oral history as a basis for community history actually began earlier with my first forays into history research. It was then, in 1991 at UCLA while studying Latin American history, that I first

From conception to the child.

An attempt to present all the data that account for the progressive transformation of a fertilized zygote into a child at birth is obviously a herculean work. In this review, I focus on four aspects of central nervous system development in which our understanding has considerably been enhanced during the last century. The first part concerns the phenomenon of neural induction, a process devoted to the acquisition of neural identity. It was classically considered that active molecules were secreted by the organizer (the dorsal lip of the blastopore in amphibians and the node in amniotes) and that these molecules induced the neural induction. Nowadays, the model is much more complex, based upon both positive and negative regulatory mechanisms. The positive inductor is BMP4, and this induces the epidermal induction. The organizer secretes negative signals that can bind BMP4 and prevent its action. The second part is devoted to the morphogenetic movements that allow formation of the neural tube. Classically, primary and secondary neurulations are opposed. It is now well established that the two modes of neurulation obey the same basic rules. The problem of segmentation of the central nervous system during embryogenesis could be easily studied for the rhombencephalon. This structure is formed by repetitive subunits called rhombomeres. Each rhombomere corresponds to a compartment separated from the others. In addition, each rhombomere expresses specific genes, and the invalidation of some of them leads to the absence of these rhombomeres. However, the situation is much more complex with regions specified very early during development and acting on adjacent regions to induce a specific pattern. The last part of my paper concerns the development of the cortex. During the last 50 years, all the classic concepts have been challenged. The fixed law of radial migration has been extensively discussed, and it is now admitted that other kinds of migration do take place during corticogenesis. These results force us to reconsider the interpretations of some cortical malformations. It seems reasonable to adopt descriptive terms for a malformative syndrome instead of terms based on putative mechanisms.

Dynamics and Similarity Laws for Adhering Vesicles in Haptotaxis

We study vesicle dynamics induced by an adhesion gradient. This kind of migration is named haptotaxis in biology. The problem is fully solved as a free boundary one, including hydrodynamics flows. First, we analyze adhesion at equilibrium. We then determine the propulsion velocity as a function of various parameters. We find a persistent mixture of rolling and sliding. Similarity laws are extracted analytically both for the adhesion area and propulsion velocity by means of dimensional and scaling arguments. Our results markedly differ from classical results of nondeformable migrating entities.

Kinematic interpretation in the prestack depth‐migrated domain

Prestack depth migration can be used in the velocity model estimation process if one succeeds in interpreting depth events obtained with erroneous velocity models. The interpretational difficulty arises from the fact that migration with erroneous velocity does not yield the geologically correct reflector geometries and that individual migrated images suffer from poor signal‐to‐noise ratio. Moreover, migrated events may be of considerable complexity and thus hard to identify. In this paper, we examine the influence of wrong velocity models on the output of prestack depth migration in the case of straight reflector and point diffractor data in homogeneous media. To avoid obscuring migration results by artifacts (“smiles”), we use a geometrical technique for modeling and migration yielding a point‐to‐point map from time‐domain data to depth‐domain data. We discover that strong deformation of migrated events may occur even in situations of simple structures and small velocity errors. From a kinematical point of view, we compare the results of common‐shot and common‐offset migration. and we find that common‐offset migration with erroneous velocity models yields less severe image distortion than common‐shot migration. However, for any kind of migration, it is important to use the entire cube of migrated data to consistently interpret in the prestack depth‐migrated domain.

The eastern frontier of Western Europe: mobility in the buffer zone.

"The post-Communist countries of Poland, Hungary, [and] the Czech and Slovak Republics have become a buffer zone between East and West. In this article we analyse the way in which this occurs in terms of migration in and out of the region. Our analysis focuses upon the emerging role which this region plays in relation to other parts of Western and Eastern Europe and the way in which economic and political developments there have encouraged particular forms of migration. We attempt to build a picture of some of the different kinds of migration taking place in relation to the social and ethnic characteristics of migrants. The article concludes that these movements are better understood as part of the mobility and circulation of people rather than as one-way migration."

A framework for object migration in object-oriented databases

This article presents a framework developed for accomodating various object migrations in ‘statically-typed’ object databases. Requirements for supporting object migrations are stipulated, and a conceptual model for describing and facilitating different kinds of migrations is described. Associated issues of controlling such migrations are then addressed, along with an initial investigation on the interence of implied migration paths and the completeness of migration operators. Some guidelines are then given to help users conduct migrations more effectively. An implementation prototype on top of an object-oriented database system was built, which embodies full support of all migration types specified in the migration model.

The Diaspora of the Novel

Reflection on the history of the novel usually begins with consideration of the social, political, and economic transformations within society that favored the “rise” of a new type of narrative. This remains true even with the numerous and important studies appearing during the past ten years, which relate the novel to an everbroadening spectrum of ideological issues—gender, class, race, and, most recently, nationalism. Yet a history of the genre might reflect not just on the novel’s national, but also its transnational, trajectory, its spread across the globe, away from its original points of emergence. Such a history would take into account the expansion of western markets—the growing exportation of goods and ideas, as well as of social, political, and cultural forms from the West—that promoted the novel’s importation by nonwestern societies. Furthermore, it could lead one to examine the very interesting inverse relationship between two kinds of migration, both of which are tied to the First World’s uneven “development” of the Third. In a world system that draws out natural resources in exchange for technologically mediated goods, the emigration of laborers and intellectuals from peripheral societies to the centers of power of the West and the immigration of a western literary genre into these same societies must be viewed as related phenomena.

Pioneer growth cone steering decisions mediated by single filopodial contacts in situ

In grasshopper embryo limb buds, the sibling Ti1 pioneers are the first neurons to initiate axonogenesis. The pioneer growth cones migrate from the limb tip to the CNS along a in direction comprising discrete steering events. Filopodial exploration of the cellular terrain in the vicinity of the advancing growth cone appears to be important for steering. Some information is available on the identity of cells and cell types, on cell-surface characteristics, and on the involvement of basal lamina in these steering decisions. In the work reported here, we have used computer-enhanced fluorescence video microscopy to examine filopodial behavior and the process of growth cone migration and reorientation resulting from interactions with the normal guidance cues on the in situ substrate. We observed several different kinds of migration and steering events, which appear to be related to the absolute and relative affinities of the contacted substrates. On a relatively homogeneous substrate of intrasegmental epithelium, growth cones advance by extending veils between filopodia, as is commonly observed on uniform substrates in vitro. Where growth cones confront an orthogonal border between substrates of dissimilar affinity, they remain on the higher-affinity substrate by extending new branches along it. Subsequently, reorientation in the preferred direction on the higher-affinity substrate is accomplished by regression of branches extended in the nonselected direction. By contrast, a single filopodial contact with a very high-affinity substrate, such as a guidepost neuron, can reorient a growth cone, even when it is migrating on a favorable substrate. In this situation, the filopodium that contacts the high-affinity substrate expands in diameter until it becomes the nascent axon.

The Economic Law of Population Distribution and Migration

"The economic law of population distribution and migration has been studied chiefly based on the Chinese situation. The distribution and development of productive forces decide the distribution and migration of population, and in turn, the latter influences the former. The population distributions in three different stages of social development, namely agricultural, industrial and information society, are described. A new concept in population economics is introduced, i.e. population economic density, which is different from the concept of population density. The formula of population economic density is P(population)/R(resources). Many kinds of migration are analysed, and it is believed that the main efficient cause of migration is economy."

Regional characteristics affecting Greek migration.

After George N. Tziafetas (EDIB, Vol. XII, 1981, No 2), Klaus Unger presents on his turn an analysis of Greek migration and regional characteristics affecting it. The comparison of both studies (which use the same methodology) shows how much two models to explain Greek regional mobility can differ when based on different variables and sources of data, and how necessary it is to make a distinction between the specific kinds of migration in such analyses.

A Preliminary Study of the Characteristics of Commuters

Commuting to and from the job has become the subject of special socioeconomic studies in connection with the considerable scale and rising rates of its development. In V. G. Davidovich's colorful expression, participants in this kind of migration comprise a "nation on wheels." (1) Daily commuters number more than 10 million, of whom, according to current statistical accounting, over 4 million are rural residents. In the Ukraine alone — one of the most urbanized republics of the country — there are more than 1.8 million commuter migrants (2); during the past 15 years they increased by nearly 150%. Despite the general trend of decline in the rural population in the Ukraine, that population is remaining stable in numbers in zones where the influence of large cities is felt. Furthermore, the percentage of nonagricultural people in the countryside is rising steadily, and this too is associated in considerable degree with the phenomenon of commuting.

Thin-layer electrophoresisoof inorganic ions. II — Use of EDTA solutions as electrolytes

In this work we report the values of electrophoretic mobility on thin layers of silica gel for the most common inorganic ions. As electrolyte 0.1 M disodium EDTA solutions, buffered at pH 4.5, 7, 10 were employed. From the kind of migration obtained we can deduce that complex formation takes place for some ions only at higher pH and whereas for others it occurs at acid pH. A third group of ions, at least, has almost zero mobility at all pH, probably because of the formation of insoluble products of hydrolysis. The different mobility values allow the realization of interesting separations, including of groups of very similar ions.

Temperature dependence of growth rate of grains during recrystallization of aluminium alloys

The paper describes the determination of the temperature dependence of the growth rate of grains during the recrystallization of aluminium alloys. It also discusses the influence of the thermal vibrations of atoms on the migration of boundaries at temperatures corresponding to the existence of equilibrium solid solution as well as the influence of particles of the second phase on this kind of migration at lower temperatures.