Methods to derive the differential equation of the free surface boundary   总被引：2，自引：0，他引：2  

Wang XS  Neuman SP  Strack OD  Verruijt A  Jamali M  Seymour B  Bear J  Cheng AH 《Ground water》2011,49(2):133-42; discussion 142-3

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HUMANISTIC GEOGRAPHY FROM THE PERSPECTIVE OF MARTIN BUBER'S PHILOSOPHY*     

Shlomo Hasson 《The Professional geographer》1984,36(1):11-18

Humanistic geography represents a duality of reason and feeling, science and ethics. As a scientific approach, it is concerned with uncovering the truth regarding people's experiential relationship with place. It does not regard the phenomena under consideration as merely an object of research, rather it bears an ethical message of concern for those objects, be they human beings, nature or place. This study expands on the ethical dimension conveyed by humanistic geography via Buber's work, trying to show that his dialogical philosophy and humanism is a logical extension of this message. I seek to convey an action-oriented frame of reference for geographers that may lead to a shift from passive reflection about people and place, to an active role in making Buber's “perfect space’ possible.  相似文献   

From overt rejection to enthusiastic embracement: changing state discourses on Israeli emigration     

Nir Cohen 《GeoJournal》2007,68(2-3):267-278

This paper deploys a critical discourse analysis methodology to examine the emergence of three (sometimes overlapping) discourses on emigration in Israel. It examines the linkages between the various discursive phases and processes of (trans-) national identity formation among emigrants. It argues that emigration discourses have often been strong predictors of subsequent changes in state policies—and other programmatic initiatives—aimed at Israeli citizens abroad. By juxtaposing the discursive construction of emigration (and its linkages to nation-forming political strategies in Israel) and the effects they have had on emigrant identities the paper contributes to the emerging literature on state-diaspora relations and transnational politics.  相似文献   

Laplace-transform analytic element solution of transient flow in porous media   总被引：1，自引：0，他引：1  

Alex Furman  Shlomo P. Neuman 《Advances in water resources》2003,26(12):1229-1237

A Laplace-transform analytic element method (LT-AEM) is described for the solution of transient flow problems in porous media. Following Laplace transformation of the original flow problem, the analytic element method (AEM) is used to solve the resultant time-independent modified Helmholtz equation, and the solution is inverted numerically back into the time domain. The solution is entirely general, retaining the mathematical elegance and computational efficiency of the AEM while being amenable to parallel computation. It is especially well suited for problems in which a solution is required at a limited number of points in space–time, and for problems involving materials with sharply contrasting hydraulic properties. We illustrate the LT-AEM on transient flow through a uniform confined aquifer with a circular inclusion of contrasting hydraulic conductivity and specific storage. Our results compare well with published analytical solutions in the special case of radial flow.  相似文献   

A GRB model satisfying stringent observational constraints     

Nir J. Shaviv 《Astrophysics and Space Science》1995,231(1-2):445-448

The temporal behavior of GRBs is quantified using a power spectrum analysis. The power spectrum of great variety of GRBs is well represented by the simple ^–2 behavior. We then study a cosmological GRB model in which relativistic flows interact with dense radiation fields. This mechanism in the densest stellar regions known to exist, surprisingly yields the correct temporal behavior. Other characteristics are also reproduced, including the duration bimodality and the hardness-duration distribution.  相似文献   

Jerusalem: between idealism and realism     

Shlomo Hasson 《Geoforum》2002,33(3):284-287

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Case-studies of groundwater resources evaluation: J.W. Lloyd (editor). Oxford University Press,Oxford, 1981, viii + 206 pp., UK £27.50 (hard cover)     

Shlomo P. Neuman 《Journal of Hydrology》1983,60(1-4):385-386

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The use of housing as a spatio-political measure: the Israeli case     

Amiram Gonen  Shlomo Hasson 《Geoforum》1983,14(1):103-109

This paper focuses on the use of the provision of public housing in Israel as a political measure, in addition to its benign role of providing shelter. In the early stages of Jewish settlement in the country the Right controlled most towns and cities, while Labour was engaged in building a rural base. As urban growth attracted many of the newly arrived workers, Labour found it necessary to become politically active in the urban sphere. This has been done through the provision of a variety of services, among which was the provision of housing with a view to recruiting their political support. Two strategies were adopted. One was the penetration of existing towns by building public housing estates, the other was the establishment of new urban centres. These strategies have enabled Labour to attain local political hegemony in many cities, but while the provision of public housing proved to be as effective political tool in the short run, it has failed to secure a lasting impact.  相似文献   

Tracer relations in mixed lakes in non-steady state     

A. Nir 《Journal of Hydrology》1973,19(1):33-41

Tracer concentration in mixed lakes was usually calculated under assumption of steady hydrologic state, i.e., constant input, output, and volume. Departures from steady state were treated by the use of average flow or weighting the concentration by inflow values. An exact analytical solution indicates the limits of validity of the above approximations. The exact solution can be adapted for multiple inputs and outputs, exchange with atmospheric moisture, evaporation with isotope fractionation and formation of epilimnion. The solution is simplified for certain types of connection between outflow and volume.  相似文献   

The revival of white holes as Small Bangs     

Alon Retter  Shlomo Heller 《New Astronomy》2012,17(2):73-75

Black holes are extremely dense and compact objects from which light cannot escape. There is an overall consensus that black holes exist and many astronomical objects are identified with black holes. White holes were understood as the exact time reversal of black holes, therefore they should continuously throw away material. It is accepted, however, that a persistent ejection of mass leads to gravitational pressure, the formation of a black hole and thus to the “death of while holes”. So far, no astronomical source has been successfully tagged a white hole. The only known white hole is the Big Bang which was instantaneous rather than continuous or long-lasting. We thus suggest that the emergence of a white hole, which we name a ‘Small Bang’, is spontaneous - all the matter is ejected at a single pulse. Thus, unlike black holes, white holes cannot be continuously observed rather their effect can only be detected around the event itself. γ-ray bursts are the most energetic explosions in the universe. Long γ-ray bursts were connected with supernova eruptions. There is a new group of γ-ray bursts, which are relatively close to Earth, but surprisingly lack any supernova emission. We propose identifying these bursts with white holes. White holes seem like the best explanation of γ-ray bursts that appear in voids. We also predict the detection of rare gigantic γ-ray bursts with energies much higher than typically observed.  相似文献