Grafting and Budding Fruit Trees

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Growing Pears in Ohio

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How to Grow Grapes in the Home Garden

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How to Grow Tree Fruits in the Home Garden

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[Review of] George M. Fredrickson. Black Liberation: A Comparative History of Black Ideologies in the United States and South Africa

George M. Fredrickson, Edgar E. Robinson Professor of United States History at Stanford University, has written a magisterial volume that complements his earlier explorations in his highly acclaimed White Supremacy and in some of his major essays in a collection, entitled The Arrogance of Race. Yet, unlike the earlier works, which compare the predominant white racism and ethnocentrism in race relations in the United States and the Union of South Africa, Black Liberation focuses on the political ideologies of “organic” African American and Black South African intellectuals. Fredrickson, to my mind, demonstrates convincingly that historically the ideology of “color-blind universalism” has been both more potent and effective -- in more cases than not-- in countering the overt claims and actions of white supremacists in both countries than “racially exclusive nationalism.

A History of Race Relations Social Science

This essay argues that the inclusion of white women, African Americans, Asian Americans, and American Indians into historiography is a fairly recent development ; and that the aforementioned development, which did not begin until the 1960s, has resulted in rigorous investigation into the racial thought of Franz Uri Boas, Robert Ezra Park, and Gunnar Myrdal and a hot debate in reference to their significance and influence on today\u27s social sciences. Furthermore, the integration of African American history into the historiography of race relations social science has given impetus to the movement towards making American intellectual history more inclusive

Strongly driven nonlinear quantum optics in microring resonators

We present a detailed analysis of strongly driven spontaneous four-wave mixing in a lossy integrated microring resonator side-coupled to a channel waveguide. A nonperturbative, analytic solution within the undepleted pump approximation is developed for a cw pump input of arbitrary intensity. In the strongly driven regime self- and cross-phase modulation, as well as multi-pair generation, lead to a rich variety of power-dependent effects; the results are markedly different than in the low power limit. The photon pair generation rate, single photon spectrum, and joint spectral intensity (JSI) distribution are calculated. Splitting of the generated single photon spectrum into a doublet structure associated with both pump detuning and cross-phase modulation is predicted, as well as substantial narrowing of the generated signal and idler bandwidths associated with the onset of optical parametric oscillation at intermediate powers. Both the correlated and uncorrelated contributions to the JSI are calculated, and for sufficient powers the uncorrelated part of the JSI is found to form a quadruplet structure. The pump detuning is found to play a crucial role in all of these phenomena, and a critical detuning is identified which divides the system behaviour into distinct regimes, as well as an optimal detuning strategy which preserves many of the low-power characteristics of the generated photons for arbitrary input power.Comment: 18 pages, 10 figure

Pruning Small Fruits

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Where do manufacturing firms locate their headquarters?

Firms’ headquarters [HQ] support their production activity, by gathering information and outsourcing business services, as well as, managing, evaluating, and coordinating internal firm activities. In search of a better location for these functions, firms often separate the HQ function physically from their production facilities and construct stand-alone HQs. By locating its HQ in a large, service oriented metro area away from its production facilities, a firm may be better able to out-source service functions in that local metro market and also to gather information about market conditions for their products. However if the firm locates the HQ away from its production activity, that increases the coordination costs in managing plant activities. In this paper we empirically analyze the trade-off of these two considerations.Corporations - Headquarters ; Industrial location ; Manufactures

[Review of] William H. Tucker. The Science and Politics of Racial Research

Since there is usually a two year period of time that elapses between the acceptance of a manuscript by a university press and its publication, we must commend William H. Tucker, who is an associate professor of psychology at Rutgers University, in his anticipation of contemporary controversies in reference to the relative abilities of races. Tucker argues that there is continuity in the thought of racists, which over the past two centuries include anthropometricians, eugenicists, and segregationists. ”The imprimatur of science,“ Tucker argues cogently, ”has been offered to justify, first slavery and, later, segregation, nativism, socio-political inequality, class subordination, poverty, and the general futility of social and economic reform. For Tucker, the attempt to demonstrate that one race is genetically less intelligent than others has been scientifically valueless and socially harmful. Scientific research into racial differences has, in essence, resulted in the “legitimation” of racist ideology. Nevertheless, Tucker is not pessimistic about winning the battle with racists. ”America\u27s democratic political traditions, he writes, ”have prevailed, and today universal suffrage, equal rights under law, and the guarantee of other civil liberties to all citizens are no longer up for debate; where demonstrable infringement has occurred, there is generally outrage and prompt redress