5,754 research outputs found

    The release of a captive-raised female African Elephant <em>(Loxodonta africana</em>) in the Okavango Delta, Botswana

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    Wild female elephants live in close-knit matrilineal groups and housing captive elephants in artificial social groupings can cause significant welfare issues for individuals not accepted by other group members. We document the release of a captive-raised female elephant used in the safari industry because of welfare and management problems. She was fitted with a satellite collar, and spatial and behavioural data were collected over a 17-month period to quantify her interactions with the wild population. She was then monitored infrequently for a further five-and-a-half years. We observed few signs of aggression towards her from the wild elephants with which she socialized. She used an area of comparable size to wild female elephants, and this continued to increase as she explored new areas. Although she did not fully integrate into a wild herd, she had three calves of her own, and formed a social unit with another female and her calf that were later released from the same captive herd. We recommend that release to the wild be considered as a management option for other captive female elephants

    UNDERGRADUATE CURRICULA IN AGRIBUSINESS AND AGRICULTURAL ECONOMICS: WHAT'S THE DIFFERENCE?

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    We summarize undergraduate agribusiness and agricultural economics curricula for 112 US institutions. Relative to agricultural economics majors, agribusiness majors on average take fewer courses in math, economics, and general agricultural economics; and more courses in agribusiness, general business, and general agriculture.Teaching/Communication/Extension/Profession,

    The Switch from Low-Pressure Sodium to Light Emitting Diodes Does Not Affect Bat Activity at Street Lights

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    We used a before-after-control-impact paired design to examine the effects of a switch from low-pressure sodium (LPS) to light emitting diode (LED) street lights on bat activity at twelve sites across southern England. LED lights produce broad spectrum 'white' light compared to LPS street lights that emit narrow spectrum, orange light. These spectral differences could influence the abundance of insects at street lights and thereby the activity of the bats that prey on them. Most of the bats flying around the LPS lights were aerial-hawking species, and the species composition of bats remained the same after the switch-over to LED. We found that the switch-over from LPS to LED street lights did not affect the activity (number of bat passes), or the proportion of passes containing feeding buzzes, of those bat species typically found in close proximity to street lights in suburban environments in Britain. This is encouraging from a conservation perspective as many existing street lights are being, or have been, switched to LED before the ecological consequences have been assessed. However, lighting of all spectra studied to date generally has a negative impact on several slow-flying bat species, and LED lights are rarely frequented by these 'light-intolerant' bat species

    Wide-Field Imaging from Space of Early-Type Galaxies and Their Globular Clusters

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    Wide-field imaging from space will reveal a wealth of information about the globular cluster systems of any galaxies in the local universe that are observed by such a mission. Individual globular clusters around galaxies in the local universe have compact sizes that are ideal for the excellent spatial resolution afforded by space-based imaging, while systems of these globular clusters have large spatial extent that can only be fully explored by wide-field imaging. One example of the science return from such a study is the determination of the major formation epoch(s) of galaxies from the ages of their globular clusters determined via their optical to near-infrared colors. A second example is determining the sites of metal-poor globular cluster formation from their cosmological bias, which constrains the formation of structures early in the universe.Comment: To appear in the conference proceedings of "Wide Field Imaging from Space" published in New Astronomy Reviews, eds. T. McKay, A. Fruchter, & E. Linde

    Where Does the Cetanic Break Take Place? Weakness of Will in Śāntideva’s Bodhicaryāvatāra

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    This article explores the role of weakness of will (akrasia) in the Indian Buddhist tradition, and in particular within Śāntideva’s Introduction to the Practice of Awakening (Bodhicaryāvatāra). In agreement with Jay Garfield, I argue that there are important differences between Aristotle’s account of akrasia and Buddhist moral psychology. Nevertheless, taking a more expanded conception of weakness of will, as is frequently done in contemporary work, allows us to draw significant connections with the pluralistic account of psychological conflict found in Buddhist texts. I demonstrate this by showing how Amélie Rorty’s expanded treatment of akrasia as including emotional response and perceptual classification allows us to recognize that one of the purposes of many of Śāntideva’s meditations is to treat various forms of akratic response
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