Session 1: Eugenics Narrative and Reproductive Engineering

Proceedings of the Pittsburgh Workshop in History and Philosophy of Biology, Center for Philosophy of Science, University of Pittsburgh, March 23-24 2001 Session 1: Eugenics Narrative and Reproductive Engineerin

Price effects of an emissions trading scheme in New Zealand

Implementation of a New Zealand Emission Trading Scheme (NZ ETS) will begin in 2008, beginning with forestry, subsequently including energy and industrial emissions, and finally, agricultural GHGs from 2013. Reducing agricultural emissions is a major challenge for New Zealand as they account for over half its total GHG emissions. On the other hand, agriculture is critical to the economy, with its basic and processed products accounting for a third of exports. We use an environmental input-output model to analyse direct and indirect cost impacts of emissions pricing on food and fibre sectors. At NZ $25/t CO₂-eq, costs of energy-related emissions on the food and fibre sectors are very small; however, costs of agricultural emissions post 2013 would substantially impact on sheep, beef and dairy farming. Costeffective mitigation measures and land use changes should help reduce micro- and macroeconomic impacts, but the latter may also risk 'emissions leakage'.emissions trading, input-output price model, agricultural greenhouse gases, Demand and Price Analysis, Environmental Economics and Policy, Land Economics/Use,

Aristotle on Mind and the Science of Nature

On the basis of two premises to which he is committed, it would seem that Aristotle must be a “naturalist” about the investigation of the soul: 1. Natural things have both a material and a formal nature. 2. In the case of living things, their formal nature is their soul. This paper deals with a complication in the above inference. In De partibus animalium I 1, Aristotle insists that the natural scientist should not speak of all soul, since not all of the soul is a nature, though one or more parts of it is (641b8–9). In this paper I argue that this claim is consistent with everything he says in the De anima about the investigation of reason, and is a consequence of his views about the methodological norms of natural science. Aristotle is a naturalist when it comes to those parts of the soul human beings share with other animals, but his views about the mind are much more complicated

Aristotle and the Functions of Reproduction

I shall argue that the function of the reproductive capacity is not to perpetuate the kind (or species), but to allow the individual reproducer to be eternal: not eternal without qualifications, but in a way. The basic premise in the arguments which establish this conclusion distinguishes between things which are numerically eternal and those which are formally eternal. This of this latter sort must be members of an everlasting series of individuals which are one-in-form (ἕν εἴδει, in Aristotle\u27s usage). The full understanding of these passages, therefore, requires a proper interpretation of the distinction between numerical and formal unity. with this distinction clarified, and with a better understanding of Aristotle\u27s teleological explanations of reproduction and sex, i close by suggesting another \u27function\u27 of reproduction - eliminating forms as independent paradigms for natural substances

Aristotle and Darwin: Antagonists or Kindred Spirits?

In the decades following the forging of the so-called Neo-Darwinian Synthesis in the 1940s, a number of its philosophical defenders created a myth about what Charles Darwin was up against, a viewpoint called “typological essentialism” often attributed to Aristotle. In this paper I first sketch the history of how this myth was created. I then establish that it is a myth by providing an account of Aristotle’s essentialism as it is actually displayed in his philosophy of biology and in his biological practice. It has nothing to do with the ‘mythic’ version. We then turn to what Darwin was really up against—a common, anti-evolutionary way of defining the species concept in Darwin’s time (that owes nothing to Aristotle), and to his attempts to re-orient thinking about it. I will close by reconsidering Aristotle and Charles Darwin: Does it make any sense to think about the relationship between two thinkers separated by more than two millennia living in such vastly different cultures? What did Charles Darwin himself think about Aristotle

Locally soluble groups with all nontrivial normal subgroups isomorphic

Let $G$ be an infinite, locally soluble group which is isomorphic to all its nontrivial normal subgroups. If $G/G'$ has finite $p$-rank for $p=0$ and for all primes $p$, then $G$ is cyclic

Price effects of an emissions trading scheme in New Zealand

Implementation of a New Zealand Emission Trading Scheme (NZ ETS) will begin in 2008, beginning with forestry, subsequently including energy and industrial emissions, and finally, agricultural GHGs from 2013. Reducing agricultural emissions is a major challenge for New Zealand as they account for over half its total GHG emissions. On the other hand, agriculture is critical to the economy, with its basic and processed products accounting for a third of exports. We use an environmental input-output model to analyse direct and indirect cost impacts of emissions pricing on food and fibre sectors. At NZ $25/t CO₂-eq, costs of energy-related emissions on the food and fibre sectors are very small; however, costs of agricultural emissions post 2013 would substantially impact on sheep, beef and dairy farming. Costeffective mitigation measures and land use changes should help reduce micro- and macroeconomic impacts, but the latter may also risk 'emissions leakage'

Robert Rosen and Relational System Theory: An Overview

Relational system theory is the science of organization and function. It is the study of how systems are organized which is based on their functions and the relations between their functions. The science was originally developed by Nicolas Rashevsky, and further developed by Rashevsky’s student Robert Rosen, and continues to be developed by Rosen’s student A. H. Louie amongst others. Due to its revolutionary character, it is often misunderstood, and to some, controversial. We will mainly be focusing on Rosen’s contributions to this science. The formal and conceptual setting for Rosen’s relational system theory is category theory. Rosen was the first to apply category theory to scientific problems, outside of pure mathematics, and the first to think about science from the point of view of category theory. We will provide an overview of Rosen’s theory of modeling, complexity, anticipation, and organism. We will present the foundations of this science and the philosophical motivations behind it along with conceptual clarification and historical context. The purpose of this dissertation is to present Rosen’s ideas to a wider audience

Industrially challenging separations via adsorption in metal-organic frameworks : a computational exploration

In recent years, metal-organic frameworks (MOFs) have been identified as promising adsorbents in a number of industrially relevant, yet challenging, separations, including the removal of propane from propane/propylene mixtures and the separation of mixtures of xylene isomers. The highly tuneable nature of MOFs - wherein structures may be constructed from a variety of diverse building blocks – has resulted in the publication of a staggering number of frameworks incorporating a wide range of network topologies, pore shapes and pore diameters. As a result, there are a huge number of candidate adsorbents to consider for a given separation. Molecular simulation techniques allow the identification of those structural features and characteristics of a MOF which exert the greatest influence on the adsorption and separation of the compounds of interest, providing insights which can both guide the selection and accelerate the development of adsorbents for a specific application. The separation of propane/propylene mixtures via adsorption has typically focused on selective adsorption of the olefin, propylene, via specific olefin-adsorbent interactions. These propylene-selective MOFs result in processes which selectively remove the most abundant species in the process stream and are typically characterised by high heats of adsorption, resulting in large adsorption units and adsorbents which are difficult to regenerate. In this work, the capability of MOFs to selectively adsorb propane over propylene is explored, potentially allowing for the design of smaller and more energy-efficient adsorption units. By studying a range of different MOFs as well as carbon-based model pores, it was found that the low-pressure selectivity of the structure is determined by the strength of the electrostatic interaction between propylene and the framework, while the adsorptive preference at industrially-relevant pressures is dominated by the enhanced packing efficiency of propylene over propane. The confinement of C3 molecules, however, may be employed to negate this entropic advantage and guide the development of materials which selectively adsorb propane over propylene. It has recently been reported that the adsorptive preference of a MOF for one xylene isomer over another may be predicted based solely on the pore size distribution of the structure. In this work, the impact of pore size on selectivity was studied systematically in both one-dimensional model pore systems of varying geometries and analogous published MOF structures. The ability of the framework to discriminate between xylene molecules in these systems was found to be determined primarily by the different packing arrangements available to the different isomers – while small pores were found to favour the slimmest of the isomers, larger pores were found to favour the more compact ortho- isomer. Finally, the adsorption and diffusion of xylene isomers in a more complex MOF, UiO-66(Zr), was studied in depth. Simulations were able to correctly predict the previously-reported preference of the MOF for ortho-xylene (oX). The smaller volume of the oX molecule compared to the other isomers was found to be responsible both for an enhanced entropic contribution and higher guest-host interaction energies. The importance of framework flexibility in the diffusion of xylene isomers in UiO-66(Zr) was also explored, with distortion of the structure in response to interaction with adsorbed molecules found to be essential in allowing xylenes to diffuse through the pore space