The effect of some aspects of low temperature and radiation on the survival of Latheticus oryzae eggs

In an attempt to delay hatching without affecting their viability, the eggs ofLatheticus oryzae W. were subjected to cold treatment at 5° for varying periods and at different stages of their development. A small dose of 0.5 krad of gamma radiation was also given at each of those temperature treatments. Most of the eggs hatched at 30° following low-temperature exposures of 1 and 2 days. There was a significant decrease in hatch as the exposure period increased further (P<0.05). An egg exposure to 5° also led to an increase in egg period and the increase was nearly equal to the period of cold exposure. Radiation did not alter the situation.

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Zusammenfassung Kühllagerung ist eine der gebr?uchlichsten Methoden für die Aufbewahrung von Insekteneiern. Um die optimalen Bedingungen für eine Vorratshaltung zu bestimmen, wurden 0–1 d alte Eier vonL. oryzae Temperaturen von 5° w?hrend 1–7 d ausgesetzt, nachdem sie verschieden lange bei 30° gehalten waren. Eine kleine Dosis von 0.5 krad Gammabestrahlung wurde bei jeder Temperaturbehandlung ebenfalls gegeben. Alle Eiproben wurden nach den verschiedenen K?ltebehandlungen in 30° zurückgebracht und die Wirkung auf Schlüpfprozentsatz und Eidauer bestimmt. Die Eidauer nahm zu, wenn die Eier bei 5° gehalten wurden, was anzeigt, da? die Embryogenese bei 5° unterdrückt wurde. Die Lebensf?higkeit der Eier wurde nicht beeintr?chtigt bei einer 5°-Einwirkungsdauer von 2 d, nahm aber bei weiterer Verl?ngerung der Expositionsdauer ab. Nur etwa 37% der Eier schlüpften (44,1% der Kontrolleier) nach 7-t?giger K?ltebehandlung. Bestrahlung beeinflu?te weder das Schlüpfen noch die Entwicklungsdauer.

     

Income of new disabled-worker beneficiaries and their families: findings from the New Beneficiary Survey

In 1982, disabled workers who came on the social security disability insurance rolls from mid-1980 to mid-1981 had median monthly incomes of less than $500 if they were unmarried and less than $1,300 if they were married. These median monthly income levels, which include the income of a spouse and minor children if present, are roughly half those of the noninstitutionalized population aged 25-64. Social security benefits are the most important source of income for disabled workers and their families: They account for 40 percent of the total family income of married disabled workers and 65 percent of the total income of unmarried disabled workers. Social security benefits provide at least half of all income for more than 80 percent of unmarried disabled-worker beneficiaries and for 50 percent of the married beneficiaries. For married disabled-worker beneficiaries, earnings of the spouse are the second most important income source. Spousal earnings account for 28 percent of total income. Pensions and asset income each account for about 10 percent of total income for these married beneficiaries. Earnings are not an important source of income for unmarried disabled-worker beneficiaries for whom they amount to only about 3 percent of total income. Pensions, asset income, and public transfers each account for about 10 percent of total income of the unmarried beneficiaries.     

Comparative nationalism: the Basques in Spain and France

Abstract. Little research on peripheral nationalism goes beyond the case study approach. Comparative studies provide greater understanding of national self-identification by comparing different ethnic groups, yet encounter difficulties in rigorously delineating specific non-group causal factors. This study adds to our insights into peripheral nationalism by comparing self-identification within the same group but in two different political systems. Study of the Basques in both Spain and France permits a comparison of the same group, thus imposing an analytical control on ethnicity, under two different sets of state policy directions. Utilizing survey data, this investigation found sharp differences in national self-identification in the Basques in Spain and France. The argument is advanced that, even when other explanatory factors are considered, this difference in Basque identification should be understood in light of the different policy stances taken over time by the central governments in Paris and Madrid toward their respective Basque minorities. While initially counter-intuitive, it is suggested that toleration and non-repressive policies toward such minorities may actually serve in the long term to decrease peripheral national identification.     

The distribution of income in a despotic society

A distribution of income between rulers and subjects can be derived as an equilibrium of violence, rather than from considerations of marginal products of owned factors of production. Society is organized in ranks, and the occupants of each rank are provided with incomes just sufficient that obedience is preferable to rebellion. To incorporate such considerations into a model, it is necessary to recognize phenomena that are normally excluded from economic analysis: combat, the mortality rate (from natural causes and from violence) as a component of the utility function, and a rudimentary technology of control.     

The nature of knowledge about public management: Lessons for research and teaching from our knowledge about chess and warfare

Knowledge about public management is similar in form to the knowledge about chess and warfare. It consists of general information about the formal and informal rules, principles of public management, and numerous examples that illustrate when, how, and why these principles apply. A master of public management, like a master in chess, has encoded in long-term memory a large managerial repertoire: patterns of managerial situations and successful actions that can be recalled and applied to new problems. The role of research on public management is to develop these principles and patterns, to weave theminto a repertoire of managerial actions, and to illustrate all this with vivid examples so that the ideas can be taught, learned, and remembered.     

Turn-taking in mother-adolescent conversations about sexuality and conflict

The current study examined the nature and style of mother-adolescent conversations, how these conversations differ by subject matter, and dyadic and individual differences. Thirty-one mother-adolescent dyads (17 boys, 14 girls) with a child between the ages of 11 and 14 had a nonstructured conversation, and conversations about conflict and sexuality. They also completed questionnaires on beliefs about acquired immunodeficiency syndrome (AIDS). Conversations were measured for turn taking, total number of words, and conversational dominance, as well as nonverbal measures of affiliation, shame, and contempt. Conversations about sexuality involved less turn taking, fewer words, and more mother dominance than nonstructured conversations. Conversations about conflicts involved less turn taking but more words than nonstructured conversations. Some gender and age differences were found. More interactive conflict conversations contained higher levels of affiliation, and lower levels of child shame than conversations with fewer turns or higher mother dominance. In addition, children in more interactive dyads possessed a larger percentage of their mother's AIDS knowledge, and worried about AIDS a moderate amount.This research was supported by National Institutes of Child Health and Human Development Grant No. HD27035.Received M.A. from UCLA. Current research interests include parent-adolescent relationships, adolescent peer relations, and adolescent sexuality.Received Ph.D. from Rutgers, The State University of New Jersey. Major research interest is in parent-adolescent communication and emotional development.Received Ph.D. from Boston University. Major research interest is in parent-child affective communication.     

The 1984 election as Anthony downs and Stanley Kelley might interpret it

This paper is an analysis of two rational choice theories of elections. Anthony Downs and Stanley Kelley's theories yield complementary interpretations of the 1984 U. S. election. Reagan's victory was based on both prospective and retrospective judgments as well as on candidate and policy considerations. Reagan won that element of an incumbent's reelection that is a referendum on his performance as president. However, people also voted on the basis of domestic and foreign policy preferences for the second term. On these issues voters preferred Mondale as much as Reagan. Reagan's victory owed remarkably little to his conservative agenda and to a warm regard for his personal qualities as a leader. His landslide was deceptive. The two Reagan victories were among the weakest of the six landslides of the postwar period by Kelley's test of decisiveness. The Reagan elections have not set the United States on the course of a long-term conservative agenda in either domestic or foreign affairs.