The release of the Vatican instruction on homosexuality in the priesthood and Catholic seminaries poses several challenging ethical issues for the psychologists who conduct psychological screening evaluations for those men interested in religious life as Catholic priests. This brief article reviews some of the key ethical issues associated with these evaluations in light of the new Vatican instruction on homosexuality. The RRICC model based on the American Psychological Association's Code of Ethics (i.e., responsibility, respect, integrity, competence, and concern) is used (...) to highlight some of the ethical challenges for psychologist evaluators. (shrink)
This article examines the clergy sexual abuse crisis in the Roman Catholic Church from an ethical point of view. The article uses the RRICC values model of ethical decision making (i.e., responsibility, respect, integrity, competence, concern) to review the behavior of Catholic bishops and other religious superiors as they have tried to manage clergy sex offenders and their victims. Hopefully, the recent press attention and resulting policy changes on these matters from the U.S. Council of Catholic Bishops will increase the (...) chances that future decisions will be ethical ones. (shrink)
In the final analysis, sustainable agriculture must derive from applied ecology, especially the principle of the regulation of the abundance and distribution of species (and, secondarily, their activities) in space and time. Interspecific competition in natural ecosystems has its counterparts in agriculture, designed to divert greater amounts of energy, nutrients, and water into crops. Whereas natural ecosystems select for a diversity of species in communities, recent agriculture has minimized diversity in favour of vulnerable monocultures. Such systems show intrinsically less stability (...) and resilience to perturbations. Some kinds of crop rotation resemble ecological succession in that one crop prepares the land for successive crop production. Such rotations enhance soil organic processes such as decomposition and material cycling, build a nutrient capital to sustain later crop growth, and reduce the intensity of pest buildup. Species in natural communities occur at discrete points along the r-K continuum of reproductive maturity. Clearing forested land for agriculture, rotational burning practices, and replacing perennial grassland communities by cereal monocultures moves the agricultural community towards the r extreme. Plant breeders select for varieties which yield at an earlier age and lower plant biomass, effectively moving a variety towards the r type. Features of more natural landscapes, such as hedgerows, may act as physical and biological adjuncts to agricultural production. They should exist as networks in agricultural lands to be most effective. Soil is of major importance in agroecosystems, and maintaining, deliberately, its vitality and resilience to agricultural perturbations is the very basis of sustainable land use. (shrink)
Lead shot deposited in fields and woodlands near shooting rangesand intense, upland, hunting adds an enormous tonnage of lead toenvironments, worldwide. This contamination is not remedied bybanning lead shot use only for waterfowl hunting. Lead pelletsdisintegrate extremely slowly, during which time they may beingested from the soil by wild birds, livestock, or silage-makingmachinery, and cause sublethal or fatal lead poisoning. Leadpellet corrosion products contaminate soil, surface waters, andground waters, often exceeding permissible levels. Plants do notconcentrate much lead from the soil, (...) except when grown in acidicsoils of heavily-contaminated shooting ranges. Inheavily-contaminated sites, earthworms ingest leadcompounds which are bioaccumulated in higher consumersof food webs. Non-toxic substitutes made from steelor bismuth are available internationally and areeffective for all types of hunting and targetshooting. Many nations are slow to require their use,despite the marked awareness of the problems of leadshot contamination and toxicosis. This is due tohunters and international sport shooting organizationsopposing the use of non-toxic substitutes and overtemphasis by government agencies on the burden ofscientific proof for every situation, rather thantaking preventative action according to thePrecautionary Principle. The ethical approach ofDenmark and The Netherlands, which banned all uses oflead shot, is advocated as a precedent for othernations to adopt. (shrink)
Louis G. Lombardi’s arguments in support of the claim that humans have greater inherent worth than other living things provide a clear account of how it is possible to conceive of the relation between humans and nonhumans in this way. Upon examining his arguments, however, it seems that he does not succeed in establishing any reason to believe that humans actually do have greater inherent worth than animals and plants.
Numerous and diverse reports indicate the efficacy of shamanic plant adjuncts (e.g., iboga, ayahuasca, psilocybin) for the care and treatment of addiction, post-traumatic stress disorder, cancer, cluster headaches, and depression. This article reports on a first-person healing of lifelong asthma and atopic dermatitis in the shamanic context of the contemporary Peruvian Amazon and the sometimes digital ontology of online communities. The article suggests that emerging language, concepts, and data drawn from the sciences of plant signaling and behavior regarding “plant intelligence” (...) provide a useful heuristic framework for comprehending and actualizing the healing potentials of visionary plant “entheogens” (Wasson 1971) as represented both through first-person experience and online reports. Together with the paradigms and practices of plant signaling, biosemiotics provides a robust and coherent map for contextualizing the often reported experience of plant communication with ayahuasca and other entheogenic plants. The archetype of the “plant teachers” (called Doctores in the upper Amazon) is explored as a means for organizing and interacting with this data within an epistemology of the “hallucination/perception continuum (Fischer 1975). “Ecodelic” is offered as a new linguistic interface alongside “entheogen” (Wasson 1971). (shrink)
The German paleontologist H. G. Bronn is best remembered for his 1860 translation and critique of Darwin's Origin of Species, and for supposedly twisting Darwinian evolution into conformity with German idealistic morphology. This analysis of Bronn's writings shows, however, that far from being mired in an outmoded idealism that confined organic change to predetermined developmental pathways, Bronn had worked throughout the 1840s and 1850s on a new, historical approach to life. He had been moving from the study of plant and (...) animal forms in the abstract towards placing them into geological and biogeographical context, analyzing patterns of progress and adaptation, explaining species diversity and individual variation, and applying biological insights to practical problems such as artificial breeding. Even though Bronn never fully accepted the idea of species transformation, he saw Darwin's theory as a bold new move toward his own goal of establishing a comprehensive, historical science of life, and he presented it as such in his translation and commentary. Thus Darwin's ideas gained a quick and generally favorable hearing in Germany not because of their easy assimilability into an older tradition, but because of their appeal to the innovative Bronn. (shrink)
Phytomorphology — if concerned with development — often concentrates on correlative changes of form and neglects the aspects of age, time and clock, although the plant's spatial and temporal organisation are intimately interconnected. Common age as measured in physical time by a physical process is compared to biological age as measured by a biological clock based on a biological process. A typical example for a biological clock on the organ level is, for example, a shoot. Its biological age is measured (...) by the biological time unit of a plastochron, which itself is defined by the cyclic-periodic initiation of the leaves. In a controlled environment biological age may replace physical age. However, biological and physical age are not necessarily linearly convertible into each other. In stationary or steady state conditions the repetitive initiation of any organ, unit or module of an articulate plant or plant modular system may define the biological time unit. A linear — monotonous biological process, e.g. axis elongation, may also define a biological time unit as a certain amount of additional growth, e.g. of length. One may speak of periodical and of continuous plastochron or, perhaps, of plastochron and rheochron. A precise measure of biological age is the generalized plastochron index applying to any modular system and module respectively. However, one should be aware that it is based on two clocks, one of them referring to the periodic process of module initiation for counting the integer plastochrons and the other to the continuous plastochron of module growth for the determination of the fraction of one plastochron. The application of the concepts is restricted to phases of stationary or steady state growth and development. In certain cases of non-stationary or non-steady state conditions a normalized-age concept may apply. (shrink)
The growth activity of an organ (variable y) is defined simultaneously by the instantaneous absolute ratedy/dt and its variationd 2y/dt2. The use of these two descriptors allows a sigmoidal (i.e. continuous and non periodical, as observed for the logistic function) growth curve to be discretized into a series of 5 growth states or phases which are delimited by the following singular values: max, Vmax (=0), max, adult stage. The (V, ) plot, termedgrowth trajectory, visualizes, e.g. in the case of Richards-Nelder's (...) generalized logistics, the unequal duration of these phases and allows the dissymmetry property of the growth function to be characterized precisely.At a more integrated organization level, such anorganic series (e. g. the set of the leaves borne by a same branch), the above concepts allow two kinds of analyses to be carried out: (i) in thekinetic approach, the growth trajectory of the series can characterizes, under certain conditions, the emergence of a new property: theoccurrence of growth activity rhythms which are independent of meristem dormancy processes; (ii) thedemographic approach shows thegrowth structure of the phytomer population (a particular form of age structure) and the associated dimensional structure (plant partition into zones or regions in relation to the growth state of the various phytomers). (shrink)
Among the national scientific groups, it was the Prague Linguistic Circle that had the most decisive affinity to the work of the Moscow-Tartu school. This paper examines the work of one of the most tireless contemporary Czech interpreters of the Lutman school, Vladimir Macura (1945-1999), whose work on Czech literary and historical texts are outstanding examples of the reverberation of Lotmanian semiotics of culture in the Czech Republic. This is particularly the case in Macura's reevaluations of the texts of the (...) Czech National Revival of the late eighteenth and early nineteenth centuries, especially in two books, Znamení zrodu (Signs of Birth) (1995) and Český sen (The Czech Dream) (1998). In these works Macura looked at this critical period in Czech national history as a multi-layered semiotic text in both the verbal and visual spheres. The present paper is an attempt at an exploration of Macura's treatment in this manner of the following: the Czech language, the city of Prague, the question of Czech national self-identification in general and as part of a larger category, the world of the Slavs. An important aspect of this project is an examination of Macura's exploration of the value functions of symbolic animals and plants in Czech Revival culture, and its relation to the axiology of Czech (Slavic) cultural identity. The paper is dedicated to Macura's memory. (shrink)
In 1987, Chrysler bought American Motors which included a plant in Kenosha, Wisconsin, a city of 72 000. Employing 6 500 workers, most of whom were members of the United Auto Workers (UAW), Chrysler became the city's largest employer. For decades, the UAW had a strong influence on city politics. However, in the 1980s young professionals in Kenosha began challenging this status quo.Chrysler shocked the citizens of Kenosha when their executives announced the closing of their plant within a year. Wisconsin (...) government officials and the UAW believed that Chrysler promised to stay for up to five years; they considered Chrysler's move to be a breach of contract. Chrysler responded that it was their "intention" -- not a contractual agreement -- to stay in Kenosha. From an ethical perspective, just cause, due process and mitigation of harmful effects should be applied in the discussion of a plant closing. (shrink)
To cope with the water deficit resulting from saline environment, plant cells accumulate three kinds of osmotica: salts, small organic solutes and hydrophillic, glycine-rich proteins. Salts such as NaCl are cheap and available but has ion toxicity in high concentrations. Small organic solutes are assistant osmotica, their main function is to protect cytoplasmic enzymes from ionic toxicity and maintain the integrity of cellular membranes. Hydrophillic, glycine-rich proteins are the most effective osmotica, they have some characteristics to avoid crystallization even in (...) high concentration, but because they are expensive they are not as commonly used as salts or organic solutes. In addition there is the question of whether the genetic information for growth in saline environment is present in all kinds of plants, both halophytes and nonhalophytes. (shrink)
This paper proposes the ‘AGENCY model’ of conscious state attribution, according to which an entity's displaying certain relatively simple features (e.g. eyes, distinctive motions, interactive behavior) automatically triggers a disposition to attribute conscious states to that entity. To test the model's predictions, participants completed a speeded object/attribution task, in which they responded positively or negatively to attributions of mental properties (including conscious and non-conscious states) to different sorts of entities (insects, plants, artifacts, etc.). As predicted, participants responded positively to conscious (...) state attributions only for those entities that typically display the simple features identified in the AGENCY model (eyes, distinctive motion, interaction) and took longer to deny conscious states to those entities. (shrink)
The early twentieth century witnessed a shift in the way philosophers of science thought about traditional 'problems of induction'. Keynes championed the idea that Hume's Problem was not a problem about causation (which had been the traditional reading of Hume) but rather a problem about induction. Moreover, Keynes (and later Nicod) viewed such problems as having both logical and epistemological components. Hempel picked up where Keynes and Nicod left off, by formulating a rigorous formal theory of inductive logic. This spawned (...) a new branch of philosophy of science called confirmation theory. Hempel's theory of confirmation was based on a few very simple (and seemingly plausible) assumptions about (instantial) 'inductive-logical support'. However, as Hempel himself was keenly aware, even such simple and seemingly plausible assumptions give rise to various puzzles and paradoxes. The two most famous paradoxes of confirmation were discovered by Hempel and Goodman. This article discusses Hempel's paradox (which is known as 'the' paradox of confirmation, since it was discovered first). However, many of the historical developments surrounding Hempel's paradox (also known as the 'raven paradox') are also crucial for understanding Goodman's later ('grue') paradox. Author Recommends: Branden Fitelson, 'The Paradox of Confirmation', Philosophy Compass 1/1 (2006): 95–113, doi: [DOI link]. In this article, I explain how the inconsistency between Hempel's intuitive resolution and his official theory of confirmation affects the historical dialectic about the paradox and how it illuminates the nature of confirmation. After the survey, I argue that Hempel's intuitions about the paradox of confirmation were basically correct, and that it is his theory that should be rejected, in favor of a (broadly) Bayesian account of confirmation. C. G. Hempel, 'Studies in the Logic of Confirmation' (I and II), Mind 54 (1945): 1–26, 97–121, dois: [DOI link]; [DOI link]. This is the locus classicus of traditional (instantial) confirmation theory. It is here that original motivations for, traditional approaches to, and paradoxes of confirmation are discussed in depth for the first time, under the rubric 'confirmation theory'. Hempel's discussion (which picks up where Keynes and Nicod left off) is chock full of crucial historical, logical, and epistemological insights. J. M. Keynes, A Treatise on Probability (London: Macmillan, 1921). Keynes does not get enough credit in this context. But, basically, chapters 18 to 23 of this classic book planted the seeds for almost all of modern confirmation theory. Nicod and Hempel (as well as Hosiasson-Lindenbaum, Carnap, and others) were, basically, just picking-up where Keynes left off. J. Nicod, The Logical Problem of Induction (1923), reprinted in Foundations of Geometry and Induction (London: Routledge, 2000). Nicod's essay expands upon Keynes's work. Nicod is the first to use the term 'confirmation', in connection with a relation of 'inductive-logical support'. Nicod endorses several key confirmation-theoretic principles (which were already advanced by Keynes). In the hands of Hempel, Nicod's work later becomes an important historical foil. J. Hosiasson–Lindenbaum, 'On Confirmation', Journal of Symbolic Logic 5 (1940): 133–48. This essay contains most (if not all) of the basic ingredients of the 'Bayesian' approaches to the paradox of confirmation that appeared later. It also sheds much light on an important dispute between Keynes and Nicod concerning one of the claims Keynes makes (in his Treatise) about 'long-run convergence' in certain (instantial) confirmation-theoretic problems. This paper also contains one of the earliest rigorous axiomatizations of conditional (subjective or logical) probability. R. Carnap, Logical Foundations of Probability (Chicago, IL: University of Chicago, 1950). This is Carnap's encyclopaedic work on inductive logic and probability. There is a tremendous amount of wisdom in here. For present purposes, the sections on Hempel's theory of confirmation (in contrast to probabilistic approaches to confirmation, such as Hosiasson–Lindenbaum's and Carnap's) are probably most important and salient (see §§87–8). I. J. Good, 'The Paradox of Confirmation', British Journal for the Philosophy of Science 11 (1960): 145–9. C. Chihara, 'Quine and the Confirmational Paradoxes', in Midwest Studies in Philosophy. Vol. 6: The Foundations of Analytic Philosophy, eds. Peter A. French, Theodore E. Uehling, Jr., and Howard K. Wettstein (Minneapolis, MN: University of Minnesota Press, 1981), 425–52. J. Earman, Bayes or Bust: A Critical Examination of Bayesian Confirmation Theory (Cambridge, MA: MIT Press, 1992), specifically: pp. 63–73. R. M. Royall, Statistical Evidence: A Likelihood Paradigm (New York, NY: Chapman & Hall, 1997), specifically: the Appendix on 'The Paradox of the Ravens'. C. McKenzie and L. Mikkelsen, 'The Psychological Side of Hempel's Paradox of Confirmation', Psychonomic Bulletin & Review 7 (2000): 360–6. P. Maher, 'Probability Captures the Logic of Scientific Confirmation', in Contemporary Debates in the Philosophy of Science, ed. Christopher Hitchcock (Oxford: Blackwell, 2004), 69–93. P. Vranas, 'Hempel's Raven Paradox: A Lacuna in the Standard Bayesian Solution', British Journal for the Philosophy of Science 55 (2004): 545–60. This is a list of seven of my favourite papers on the paradox of confirmation, since 1950 (listed in chronological order). Most of these are coming from a broadly 'Bayesian' perspective. In particular, I recommend Vranas as a good starting point here. Online Materials: http://fitelson.org/probability/ Probability & Induction (PHIL 148, UC-Berkeley, Spring 2008) This is the Web site for an undergraduate course on probability and induction that I taught at UC-Berkeley in Spring 2008. Much of the course focuses on confirmation theory (including the paradoxes of confirmation). There are many links there to lecture notes, papers, books and other salient online resources. http://fitelson.org/confirmation/ Confirmation (graduate seminar, UC-Berkeley, Fall 2007) This is the Web site for a graduate seminar on confirmation that I taught at UC-Berkeley in Fall 2007. This seminar is a historical trace of induction/confirmation, from Aristotle to Goodman (mostly, focusing on the 20th century and the paradoxes of confirmation). Sample Syllabus: See the online syllabi for Confirmation and/or Probability & Induction (above). Note: those online syllabi contain electronic copies of many of the salient readings. (shrink)
The biochemistry of geotropism in plants and gravisensing in e.g. cyanobacteria or paramacia is still not well understood today [1]. Perhaps there are more ways than one for organisms to sense gravity. The two best known relatively old explanations for gravity sensing are sensing through the redistribution of cellular starch statoliths and sensing through redistribution of auxin. The starch containing statoliths in a gravity field produce pressure on the endoplasmic reticulum of the cell. This enables the cell to sense direction. (...) Alternatively, there is the redistribution of auxin under the action of gravity. This is known as the Cholodny-Went hypothesis [2], [3]. The latter redistribution coincides with a redistribution of electrical charge in the cell. With the present study the aim is to add a mathematical unified field explanation to gravisensing. (shrink)
This essay explores two strategies of inquiryin ecological science. Ecologists may regardthe sites they study either as contingentcollections of plants and animals, therelations of which are place-specific andidiosyncratic, or as structured systems andcommunites that are governed by general rules,forces, or principles. Ecologists who take thefirst approach rely on observation, induction,and experiment – a case-study or historicalmethod – to determine the causes of particularevents. Ecologists who take the secondapproach, seeking to explain by inferringevents from general patterns or principles,confront four conceptual obstacles (...) which thisessay describes. Theory in ecology must (1)define and classify the object it studies,e.g., the ecosystem, and thus determine theconditions under which it remains the ``same''system through time and change. Ecologistsmust (2) find ways to reject as well as tocreate mathematical models of the ecosystem,possibly by (3) identifying efficient causes ofecosystem organization or design. Finally,ecologists will (4) show ecological theory canhelp solve environmental problems both inpristine and in human-dominated systems. Afailure to solve – or even to address – theseobstacles suggests that theoretical ecology maybecome a formal science that studies themathematical consequences of assumptionswithout regard to the relation of theseassumptions to the world. (shrink)
Philosophers, Henri Bergson once observed, "seem to philosophize as if they were sealed in the privacy of their study and did not live on a planet surrounded by the vast organic world of animals, plants, insects, and protozoa." Providing a solid overview of ecological philosophy and original insights into this developing field, Minding Nature focuses on some of the most influential thinkers who, in fact, have emphasized our natural relations to the earth, our social creations, and each other. Combining philosophy, (...) ecology, and political theory, chapters thoroughly examine, critique, and build upon the ideas of such luminaries as Thomas Hobbes, Martin Heidegger, Ernst Bloch, Hannah Arendt, Herbert Marcuse, Barry Commoner, Rachel Carson, and Jurgen Habermas, among others. Each thinker considered has contributed significantly to both contemporary discussion and historical understanding of political, epistemological, or social aspects related to nature and, with several exceptions, stimulated constructive dialogue within progressive, democratic, and radical left circles. By challenging the notion that conservation is inherently politically conservative or that our oikos (home) must be rendered uniformly economic where ecology is concerned, they enable us to rethink the possibility of creating a more democratic and ecological society. (shrink)
Proteins with nearly the same structure and function (homologous proteins) are found in increasing numbers in phylogenetically different, even very distant taxa (e.g. hemoglobins in vertebrates, in some invertebrates, and even in certain plants). In discussing the origin of those proteins biologists hardly at all consider convergent evolution because the origin of proteins is held to be a random process, at least ultimately, since selection can work only what the random process delivers as having a minimum adaptive value. The repetition (...) of a random process with the same result is considered to be extremely unlikely. The supposed (un)likelihood, however, is almost never determined quantitatively. This paper attempts such a quantitative determination. It appears that the probability for the random origin of a definite protein is greater than what one would expect in view of the enormous number of equally possible nucleotide sequences in the corresponding gene since what is equally possible is not always equally likely. The probability, however, of the convergent evolution of two proteins with approximately the same structure and function is too low to be plausible, even when all possible circumstances are present which seem to heighten the likelihood of such a convergence. If this is so, then the plausibility of a random evolution of two or more different but functionally related proteins seems hardly greater. (shrink)
The use of socially learned information (culture) is central to human adaptations. We investigate the hypothesis that the process of cultural evolution has played an active, leading role in the evolution of genes. Culture normally evolves more rapidly than genes, creating novel environments that expose genes to new selective pressures. Many human genes that have been shown to be under recent or current selection are changing as a result of new environments created by cultural innovations. Some changed in response to (...) the development of agricultural subsistence systems in the Early and Middle Holocene. Alleles coding for adaptations to diets rich in plant starch (e.g., amylase copy number) and to epidemic diseases evolved as human populations expanded (e.g., sickle cell and G6PD defi- ciency alleles that provide protection against malaria). Large-scale scans using patterns of linkage disequilibrium to detect recent selection suggest that many more genes evolved in response to agriculture. Genetic change in response to the novel social environment of contemporary modern societies is also likely to be occurring. The functional effects of most of the alleles under selection during the last 10,000 years are currently unknown. Also unknown is the role of paleoenvironmental change in regulating the tempo of hominin evolution. Although the full extent of culture-driven gene-culture coevolution is thus far unknown for the deeper history of the human lineage, theory and some evidence suggest that such effects were profound. Genomic methods promise to have a major impact on our understanding of gene-culture coevolution over the span of hominin evolutionary history. (shrink)
The aim of this essay is to present a model of ethical technology management which assumes that elites who make the system design and development decisions should minimize the risks to stakeholders rather than maximize gains for their organizations. Given the unsettled state in ethical theory a familiar substantive Social, Economic, Environmental and Rights value set or ‘SEER’ ethic is presented. To enable foresight of the negative SEER effects of innovations a technology life cycle is introduced. A cognate issue life (...) cycle is presented to facilitate the ethical resolution of SEER issues associated with such effects. The resultant problem of increased front end load delays and costs, due to ongoing system redesign and stakeholder discussions is found to preferable to high ‘rear end load’ crisis costs, e.g., ofthe Ford Pinto, Exxon Valdez, Dalkon lUD Shield, and the Union Carbide Bhopal plant. Furthermore the model promises improved returns on the capital investments involved, indications for further research in ethics, economics and organizational theory are noted. (shrink)
Structurally, microtubules (MTs) are composed of protofilaments of the subunit protein. They are prominent components of the cytoplasmic matrix and perform important functions as cytoskeletal elements for the determination of cell shape and as key elements in intracellular motility such as mitosis and the translocation of cell organelles. These functions are thought to depend on the controlled assembly and disassembly of MTs in the cytoplasm and on the interaction of MTs with each other and with other cytoplasmic components. I think (...) that apart from these cellular functions, MTs have the function of message transmission. Although no direct evidence is available to explain this point at present, a number of inddirect evidences have been obtained by many scientists e.g.: brain tissue has circumstantial the highest tubulin concentration, MTs have the property of self-assembly and disassembly, microtubule(MT) network is a key factor in differentiation of plant cells. (shrink)
The biochemistry of geotropism in plants and gravisensing in e.g. cyanobacteria or paramacia is still not well understood today. Perhaps there are more ways than one for organisms to sense gravity. The two best known relatively old explanations for gravity sensing are sensing through the redistribution of cellular starch statoliths and sensing through redistribution of auxin. The starch containing statoliths in a gravity field produce pressure on the endoplasmic reticulum of the cell. This enables the cell to sense direction. Alternatively, (...) there is the redistribution of auxin under the action of gravity. This is known as the Cholodny-Went hypothesis. The latter redistribution coincides with a redistribution of electrical charge in the cell. With the present study the aim is to add a mathematical unified field explanation to gravisensing. (shrink)
Quantitative genetics (QG) analyses variation in traits of humans, other animals, or plants in ways that take account of the genealogical relatedness of the individuals whose traits are observed. “Classical” QG, where the analysis of variation does not involve data on measurable genetic or environmental entities or factors, is reformulated in this article using models that are free of hypothetical, idealized versions of such factors, while still allowing for defined degrees of relatedness among kinds of individuals or “varieties.” The gene (...) - free formulation encompasses situations encountered in human QG as well as in agricultural QG. This formulation is used to describe three standard assumptions involved in classical QG and provide plausible alternatives. Several concerns about the partitioning of trait variation into components and its interpretation, most of which have a long history of debate, are discussed in light of the gene-free formulation and alternative assumptions. That discussion is at a theoretical level, not dependent on empirical data in any particular situation. Additional lines of work to put the gene-free formulation and alternative assumptions into practice and to assess their empirical consequences are noted, but lie beyond the scope of this article. The three standard QG assumptions examined are: (1) partitioning of trait variation into components requires models of hypothetical, idealized genes with simple Mendelian inheritance and direct contributions to the trait; (2) all other things being equal, similarity in traits for relatives is proportional to the fraction shared by the relatives of all the genes that vary in the population (e.g., fraternal or dizygotic twins share half of the variable genes that identical or monozygotic twins share); (3) in analyses of human data, genotype-environment interaction variance (in the classical QG sense) can be discounted. The concerns about the partitioning of trait variation discussed include: the distinction between traits and underlying measurable factors; the possible heterogeneity in factors underlying the development of a trait; the kinds of data needed to estimate key empirical parameters; and interpretations based on contributions of hypothetical genes; as well as, in human studies, the labeling of residual variance as a non-shared environmental effect; and the importance of estimating interaction variance. (shrink)
The purpose of this article is to show how moral imagination can be cultivated through meditation. Moral imagination was conceived as a three-stage process of ethical development. The first stage is reproductive imagination, that involves attaining awareness of the contextual factors that affect perception of a moral problem. The second stage, productive imagination, consists of reframing the problem from different perspectives. The third stage, creative imagination, entails developing morally acceptable alternatives to solve the ethical problem. This article contends that moral (...) imagination can be cultivated through three kinds of meditation: non-discursive, semidiscursive, and discursive meditation. Part one shows how the seed of reproductive moral imagination is planted during sessions of nondiscursive meditation. Productive moral imagination, as will be shown in part two, is nurtured through semidiscursive meditation. Part three will demonstrate the flowering of creative moral imagination through discursive meditation. Reflection and small group discussion on each form of meditation will help to show business people how to cultivate moral imagination. (shrink)
Nnewi is situated some 30 kilometres South East of Onitsha in Anambra State in the southeastern part of Nigeria. This highly commercial town has undergone rapid urbanisation and industrialisation within the past two decades, since the end of the 1967–1970 Nigerian civil war. The Igbo community of the study area had traditionally employed bioconversion methods and other indigenous technology to process or recycle bio and non-degradable wastes. Industrialisation has enjoyed priority status in this locality as a requirement for modernisation and (...) economic progress. The rapid urbanisation, aggressive industrialisation, and the attendant uncontrolled population growth have had a deleterious impact on the environment. There is now a wide range of industrial wastes that are released daily into the environment. Effects of these activities on the socio-cultural practices of the people, plant genetic resources and the environment are highlighted. In addition to palliative measures suggested here, a call is made to revisit the successful indigenous waste treatment and management technology formerly practised by the Igbo community. The importance of combining modern biotechnological approaches with the indigenous technology, norms and practices of Nwewi people to effect suitable waste treatment and management, as well as improving the living habits and the education of the people about their environment, is recommended. (shrink)
The literature on Hinduism and the environment is vast, and growing quickly. It has benefitted greatly from the work of scholars in a wide range of disciplines, such as religious studies, Asian studies, history, anthropology, political science, and so on. At the same time, much of this work fails to define key terms and make fundamental assumptions explicit. Consequently, it is at least initially difficult to engage with it philosophically. In the first section of this paper, I clarify a central, (...) implicit assumption that many of the authors working in this area share?namely, the assumption that a plausible environmental ethic must attribute direct moral standing to individual, living, non-human entities in nature, such as animals and plants. In the second section, I offer a preliminary defense of this assumption. In the third section, I respond to objections, and conclude that the argument is at least initially convincing. (shrink)
This paper challenges the presumed triumph of laboratory life in the history of twentieth-century biomedical research through an exploration of the relationships between laboratory, clinic, and field in the regional understanding and treatment of allergy in America. In the early establishment of allergy clinics, many physicians opted to work closely with botanists knowledgeable about the local flora in the region to develop pollen extracts in desensitization treatments, rather than rely upon pharmaceutical companies that had adopted a principle of standardized vaccines (...) beholden to bacteriology that gave no thought to the particularities of place where their products were to be sold. Natural historical sciences like plant ecology and systematics furnished important knowledge, resources, and practices in establishing a medical marketplace for allergy in America. And botanists similarly profited from biomedicine and allergic bodies in extending their network of knowledge about the plant world. (shrink)
Domestic livestock animals and soils must be considered together as part of an agroecosystem which includes plants. Soil sustainability may be simply defined as the maintenance of soil productivity for future generations. There are both positive and negative aspects concerning the role of animals in soil sustainability. In a positive sense, agroecosystems which include ruminant animals often also include hay forage-or pasture-based crops in the humid regions. Such crops stabilize the soil by decreasing erosion, improving soil structure and usually require (...) fewer chemical inputs. Monogastric animal culture is based on an agroecosystem consisting of mainly grain crops. These crops can result in the soil being exposed to water and wind erosion although soil conservation practices that significantly reduce soil losses may be followed. The management of animal manures is not always compatible with soil conservation practices. Careful management of the nutrients in manure is absolutely necessary to avoid nitrate contamination of ground water or phosphorus loading of streams and lakes. In a negative sense, increases in animal livestock populations in association with human population growth are promoting desertification in the arid and semi-arid regions of the world. The key component for a fully compatible and acceptable association between domestic animals and soil productivity is proper management. Careful management of the components of an animal-based agroecosystem is required if soil productivity and environmental quality are to be maintained. Although we have much to learn, technologies are available to move a considerable way towards this ideal state. (shrink)
If environmentalists are to combat effectively the continuing environmental decay resulting from more and more intense human exploitation of nature, they need a plausible and coherent rationale for preserving sensitive areas and other species. This need is illustrated by reference to two examples of controversies concerning large public projects in wilderness areas. Analyses of costs and benefits to presently existing human beings and the utilitarian theory which supports such theories are inadequate to provide such a rationale, as other writers have (...) shown. A number of environmentalists have suggested that ascriptions of rights to nonhuman animals, plants, and other natural objects may provide the necessary rationale. I argue that such ascriptions can only be effective if they are supported by a general theory of rights. Although no such general theory is developed, I state four minimal conditions which must be fulfilled by all rights holders as entailments of the concept of a right and, hence, as necessary conditions on rights holding, regardless of the general theory of rights espoused. I then argue that no appeals to rights of nonhumans can simultaneously fulfill these four minimal conditions and, on the other hand, satisfy the need for a coherent rationale for environmental preservation. In the central argument of the essay I exploit the distinction between the concern of vegetarians and antivivisectionists who rest their case for animal rights on the analogy ofanimal suffering to human suffering and the concern of environmentalists to protect the integrity of holistic ecosystems. I then conclude that even if the case for nonhuman rights can be made convincingly, the rights defended are insufficient for the development of a complete and coherent rationale for environmental preservation. (shrink)
The construction of theoretical models in biology, situated at the cross-roads of biology, mathematics and computer science, often leads to a tool as final product. Its genesis can be named Infogenesis. The procedure of the resolution of theoretical problems is analyzed on examples of practical purposes taken from plant biology.The first example deals with mineral plant nutrition, explaining a way to go from theoretical ionic balances to the experimental realization of nutritional solutions with macro-element components.
Lifeboat ethics is an anomalous concept that has been applied to many different situations, such as overpopulation. In thispresentation, Lifeboat Ethics is applied to plant closings (Darlington, Amoco/Neodesha, Chrysler/Kenosha) and downsizing (BP Amoco). The power of the decision maker—not the rights of the employees—determines who will remain, who will be forced overboard, and who will be invited in.
In their environment, plants are continuously submitted to natural stimuli such as wind, rain, temperature changes, wounding, etc. These signals induce a cascade of events which lead to metabolic and morphogenetic responses.In this paper the different steps are described and discussed starting from the reception of the signal by a plant organ to the final morphogenetic response. In our laboratory two plants are studied: Bryonia dioica for which rubbing the internode (...) results in reduced elongation and enhanced radial expansion (Boyer et al., 1979) and Bidens pilosa for which the response occurs at distance, hence pricking the cotyledon of a plantlet induces the growth inhibition of both the hypocotyl (Desbiez et al., 1981) and the axillary bud of the pricked cotyledon (Desbiez, 1973). (shrink)
