4,600 research outputs found

    Long Term Consequences of Natural Resource Booms for Human Capital Accumulation

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    Tight labour markets driven by resource booms could increase the opportunity cost of schooling and crowd out human capital formation. For oil producing economies like the Province of Alberta, the OPEC oil shocks of 1973 to 1981 may have had an adverse long term effect on the productivity of the labor force if the oil boom resulted in workers reducing their ultimate investment in human capital rather than merely altering the timing of schooling. We analyze the effect of this decade long oil-boom on the long-term human capital investments and productivity for Alberta birth cohorts that were of normal schooling ages before, during and after the oil boom. Our findings suggest that resource booms may change the timing of schooling but they do not reduce the total accumulation of human capital.Resource booms, long term human capital accumulation, OPEC oil crisis

    ASSESSING THE GENOTOXICITY OF TRICLOSAN IN TADPOLES OF THE AMERICAN BULLFROG, LITHOBATES CATESBEIANUS.

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    Amphibians are particularly sensitive to environmental degradation and, therefore, serve as effective environmental quality indicators. Research has suggested that amphibian declines are exacerbated by manmade environmental toxicants, especially those found in high concentrations in urban areas. The NIH has pinpointed genotoxicity as a major route of cancer causation, and has since developed stringent testing procedures for potentially hazardous chemicals. One such method, recognized for its simplicity and economy, is the micronucleus assay. A study was conducted assessing the genotoxicity of the widely used antimicrobial agent Triclosan to American Bullfrog tadpoles. Lithobates catesbeianus tadpoles were reared in glass aquaria containing ultra-high purity water and were dosed with nominal concentrations of 2.3 µg/L, 23 µg/L, and 230 µg/L Triclosan, reflecting 1x, 10x, and 100x concentrations of the compound as found in US surface waters. Eight replicates of each of the three levels of Triclosan contamination were prepared, as well as eight replicates per control group. Each replicate contained three tadpoles in a glass aquarium, from which one tadpole per tank was sampled after 1, 8, or 15 days following initial exposure to test compounds. Erythrocytes were prepared on slides and scored for micronucleus presence under 1000x magnification. Triclosan induced significant micronucleus formation after only 24 hours in all treatments relative to the negative control and exhibited a maximum of 15 micronuclei per 2,000 erythrocytes scored. Modeling of MN induction dynamics by treatment suggested that the best predictor of micronucleus induction was the acute TCS exposure level, as described by a linear mixed effects model including a binomial term of time exposed. Micronucleus induction was TCS concentration dose-dependent. This study supports that Triclosan induces significant genetic damage at environmentally relevant concentrations. It is clear that the effects of genotoxic agents must be certified so proper regulatory protocols can be developed and enforced, in order to conserve wildlife and promote human health

    Nanofluidic tuning of photonic crystal circuits

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    By integrating soft-lithography-based nanofluidics with silicon nanophotonics, we demonstrate dynamic, liquid-based addressing and high Delta n/n(~0.1) refractive index modulation of individual features within photonic structures at subwavelength length scales. We show ultracompact tunable spectral filtering through nanofluidic targeting of a single row of holes within a planar photonic crystal. We accomplished this with an optofluidic integration architecture comprising a nanophotonic layer, a nanofluidic delivery structure, and a microfluidic control engine. Variants of this technique could enable dynamic reconfiguration of photonic circuits, selective introduction of optical nonlinearities, or delivery of single molecules into resonant cavities for biodetection

    An Interpersonal Relationship Workshop Designed For Seventh-Day Adventist Congregational Use

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    The Seventh-day Adventist church has entered the field of human relations to help members within its communities function more harmoniously. As problem areas have arisen the church has endeavored to meet them. Somehow, the area of interpersonal relations has not been broached on the congregational level. Due to this lack of involvement materials have not been readily available. These are essential so that fellowship and growth might be constant. To develop materials for presentation in a workshop for congregational use, five areas were explored: 1. Self-worth. This subject is examined from a biblical perspective. Self-worth effects our ability to interact with and relate to others. We must be concerned in our approach to theology to keep a balance between law and grace, depravity and restoration, guilt and forgiveness. Without seeing the total picture of God\u27s relationship to man, human beings can develop a self-image that can be negative and, therefore, destructive. 2. Knowing and trusting. This concern addresses primarily those individuals who are unable to share their talents and abilities with the church community for lack of trust. They function within that community without being truly known and without a deep knowledge of others. Knowing and trusting must be developed and practiced if relationships are to be deep and meaningful. 3. Communication. Proper methods of communication were included in the workshop to foster openness. Often individuals communicate on the surface which disallows deep relationships. It is therefore imperative to teach methods whereby open and honest communication can function. 4. Mutual acceptance and support. These concerns develop upon the basis of human temperament, its similarities and differences. When we realize that other people are, and have a right to be, different from our­selves, we can more easily accept them. Following Paul\u27s example given in I Cor 12, we understand that through divergence comes strength. 5. Conflict resolution. The reason for teaching methods in this area to church members is obvious. Many political problems within the church congregations find their basis in unresolved conflict among individuals. Methods to teach conflict management are based in the biblical mandates of reconciliation and love. The responses to the two workshops were positive, thus materials in the area of interpersonal relations are needed. Responses also indicate that leadership needs to be aware of its own interpersonal functioning

    Alien Registration- Emery, David H. (Reed Plantation, Aroostook County)

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    https://digitalmaine.com/alien_docs/32710/thumbnail.jp

    Interview with David Emery by Mike Hastings

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    Biographical NoteDavid Farnham Emery was born on September 1, 1948, in Rockland, Maine. His father was a bookkeeper, accountant, and golfer (he also played baseball for the University of Pennsylvania), and his mother was a nurse. Both parents served in the military during World War II, his father as a staff sergeant and his mother as an officer. He grew up in a Republican family and attended Worcester Polytechnic Institute in Worcester, Massachusetts from 1967-1970. He was elected to the Maine legislature immediately after graduation, during the Vietnam War. In 1974, he was elected as a U.S. congressman during the Nixon administration and served from 1975-1982. In 1982, he was the Maine Republican candidate for the U.S. Senate and lost to Democrat George Mitchell in the election. He served as deputy director of the United States Arms Control and Disarmament Agency from 1983-1988. At the time of this interview he was involved in political polling and management consulting, as well as renewable energy resource strategies in Maine. SummaryInterview includes discussion of: election to Maine state legislature; early involvement in politics; Dick Berry; Sawin Millet; the 1974 House election and the recount; Emery’s win; Mitchell’s 1974 loss to Jim Longley; meeting Mitchell in the 1974 campaign; 1974 Maine congressional race recount and Peter Kyros, Sr.; the staff in the Congressional Office; Charlie Smith; Stan McGeehan, Emery’s campaign manager; Emery’s 1981 decision to run for Senate; political consulting/polling; Emery’s view of current politics in Maine; the 2nd and 1st Districts in Maine; and the 1982 U.S. Senate race

    Les besoins des fonctionnaires

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