This study investigated poultry farmers’ perceptions, preferences, and use of commercially compounded and self-compounded feeds in the Oyo Area of Oyo State, Nigeria. Data were collected from 120 poultry farmers through a structured interview schedule. The study concluded that poultry farmers prefer and use self-compounded feeds (SCF) instead of commercially compounded feeds (CCF) because (a) self-compounded feeds are of better quality than commercially compounded feeds, (b) there are no quality control measures in the poultry feed industry in the Oyo Area, (...) (c) commercially compounded feeds cost more than self-compounded feeds, and (d) farmers choose feed based on the perceived quality of the feed, their technical ability to produce feed by themselves, the cost of CCF, the storability of feed, and the cost and availability of transportation. Based on these findings, it is recommended that interested public and private agencies should organize annual extension workshops and training for poultry farmers in the study area on (a) feed formulation; (b) feed ingredient mixing and compounding; (c) selection of ingredients, mixtures, and additives; and (d) the establishment, operation, and maintenance of feed mills. Farmers should be encouraged to form feed mill cooperative societies. The performance of the Standards Organization of Nigeria (SON) should be monitored and evaluated to ensure its effective oversight of quality standards for agricultural products and inputs such as feeds and feed ingredients. (shrink)

One of the central issue of developmental biology concerns the molecular mechanisms whereby a multipotent cell gives rise to distinct differentiated progeny. Differences between specialised cell types reflect variations in their patterns of gene expression. The regulation of transcription initiation is an important control point for gene expression and it is, therefore, not surprising that transcription factors play a pivotal role in mammalian development and differentiation.Haemopoiesis offers a uniquely tractable system for the study of lineage commitment and differentiation. The importance (...) of transcription factor in the normal regulation of haemopoiesis is underlined by the frequency with which transcription factors are targeted by leukaemogenic mutations. Studies of the function and regulation of haemopoietic transcription factors, especially those expressed in lineage‐restricted patterns, should greatly increase our understanding of the molecular control of haemopoiesis. In this review we have focused on insights provided by recent studies of the GATA and SCL proteins. (shrink)

The long-awaited revision of the industry standard on phylogenetics Since the publication of the first edition of this landmark volume more than twenty-five years ago, phylogenetic systematics has taken its place as the dominant paradigm of systematic biology. It has profoundly influenced the way scientists study evolution, and has seen many theoretical and technical advances as the field has continued to grow. It goes almost without saying that the next twenty-five years of phylogenetic research will prove as fascinating as the (...) first, with many exciting developments yet to come. This new edition of Phylogenetics captures the very essence of this rapidly evolving discipline. Written for the practicing systematist and phylogeneticist, it addresses both the philosophical and technical issues of the field, as well as surveys general practices in taxonomy. Major sections of the book deal with the nature of species and higher taxa, homology and characters, trees and tree graphs, and biogeography—the purpose being to develop biologically relevant species, character, tree, and biogeographic concepts that can be applied fruitfully to phylogenetics. The book then turns its focus to phylogenetic trees, including an in-depth guide to tree-building algorithms. Additional coverage includes: Parsimony and parsimony analysis Parametric phylogenetics including maximum likelihood and Bayesian approaches Phylogenetic classification Critiques of evolutionary taxonomy, phenetics, and transformed cladistics Specimen selection, field collecting, and curating Systematic publication and the rules of nomenclature Providing a thorough synthesis of the field, this important update to Phylogenetics is essential for students and researchers in the areas of evolutionary biology, molecular evolution, genetics and evolutionary genetics, paleontology, physical anthropology, and zoology. (shrink)

Endosperm is emerging as a system for investigating the genetic control of wall placement and deposition in plant development. Development of endosperm progresses in distinct stages from a wall‐less syncytial stage to a cellular stage that is entirely typical of plant meristems where the division plane is predicted by a preprophase band of microtubules (PPB) and cytokinesis is completed by formation of a cell plate in association with a phragmoplast. Four developmentally different types of walls, each associated with a different (...) microtubule system, are sequentially produced: (1) free growing walls deposited in the absence of mitosis and phragmoplasts; (2) walls guided by cytoplasmic phragmoplasts formed adventitiously in the absence of mitosis; (3) walls formed by interzonal phragmoplasts in a cell cycle that lacks PPBs; and (4) wall deposition driven by interzonal phragmoplasts in a cycle that includes PPBs. We are using methods of differential screening to isolate cDNA clones corresponding in temporal and spatial pattern to the types of wall development, and are studying mutants for clues to the genetic controls of wall development. (shrink)

Книга посвящена рассмотрению ряда актуальных проблем современной эпистемологии, особое внимание уделяется новым подходам к классическим вопросам теории познания. Авторы предлагают свой анализ таких проблем.

We attempt to defend the species-as-individuals hypothesis by examining the logical role played by the binomials (e.g., "Homo sapiens," "Pinus ponderosa") in biological discourse about species. Those who contend that the binomials can be properly understood as functioning in biological theory as singular terms opt for an objectual account of species and view species as individuals. Those who contend that the binomials can in principle be eliminated from biological theory in favor of predicate expressions opt for a predicative account of (...) species and view species as kinds. We contend that biologists' talk about species is talk about species as individuals, and we conclude that the most plausible account of species is an objectual account. (shrink)

Книга предназначена для студентов, преподавателей и научных сотрудников высших учебных заведений, занимающихся вопросами философии.

The ongoing debate on the ethics of using artificial intelligence (AI) in military contexts has been negatively impacted by the predominant focus on the use of lethal autonomous weapon systems (LAWS) in war. However, AI technologies have a considerably broader scope and present opportunities for decision support optimization across the entire spectrum of the military decision-making process (MDMP). These opportunities cannot be ignored. Instead of mainly focusing on the risks of the use of AI in target engagement, the debate about (...) responsible AI should (i) concern each step in the MDMP, and (ii) take ethical considerations and enhanced performance in military operations into account. A characterization of the debate on responsible AI in the military, considering both machine and human weaknesses and strengths, is provided in this paper. We present inroads into the improvement of the MDMP, and thus military operations, through the use of AI for decision support, taking each quadrant of this characterization into account. (shrink)

The aim of this study was to explore neonatal nurses’and mothers of preterm infants’experiences of daily challenges. Interviews took place asking for good, bad and challenging experiences. Data were analysed using qualitative content analysis and findings were clustered in two categories: good and challenging experiences, each containing three themes. The good experiences were: managing with success as a nurse, small things matter for mothers, and a good day anyhow for mothers and nurses. The challenging experiences were: mothering in public, being (...) pulled between responsibilities, and adverse things stick under the nurses’skin. The study shows that small daily clinical matters become big issues and could lead to moral distress, and that nurses integrate ethics of justice and ethics of care while mothers are concerned about health and well-being of their specific infant only. The challenge for nursing to integrate fairness and sensitive care in family-oriented neonatal care is discussed. (shrink)

The vexed question of the exact significance of the name of Mavortius in the old Putean MS. of Prudentius has again been called into court in the recent discussions of the Mavortian recension of Horace, and is fully treated in Dr. Bick's Horazkritik seit 1880, pp. 31–35. As Dr. Bick has done me the honour of subjecting my former articles on the question to his criticism, I feel called upon to say something in defence of the view I maintained. I (...) willingly grant him that perhaps I laid too strong a stress on the connection of the question with Horatian criticism; but I do so, I fear, not as a convert to his arguments in favour of the view that Put. is merely a copy of a MS. that had Mavortius' autograph written in it, and that therefore that name is part of a lost subscriptio, but precisely for the contrary reason, that I consider I was too much influenced by former advocates of that view. That there is no ground for assuming the name to be part of a lost subscriptio I am more than ever convinced, and my object here is to endeavour to show that the whole argument based on a false premise. (shrink)

I venture to call the attention of classical scholars to two legends about Roman Emperors gleaned amid the arid waste of theological nonsense which passed for literature among the Copts, in the hope that they may have better luck than I have had in tracing them to some classical source. The first is taken from MS. Par. Copte 131, fol. 40, a single leaf of what seems to be a geographical and historical encyclopaedia.1 The writer who is treating in a (...) very discursive way of Ethiopia, states that Nero or Domitian—a strange pair to run in double harness—caused an island in the Red Sea to be watered with oil. The description of that island is mixed up with a mention of the original divisions of the Indians—a term which as usual in early days embraces both Indians and Ethiopians,—and their subsequent changes; and as that too may be of interest to students of ancient geography, I will translate the passage in full. (shrink)

I DO not think that it is at all generally known that among the Egyptian antiquities given by Grant Bey to the Museum at Aberdeen there are a considerable number of papyrus fragments, Greek, Coptic,1 Hieratic, Demotic, and even Latin and Arabic, which except for an inspection by Prof. Sayce and a passing visit of Dr. Grenfell have up till now been left unexamined. That indeed is my only reason for trespassing in a branch of Palaeography with which I am (...) quite unfamiliar; and it is in the hope of inciting some experienced papyrologist to turn his attention to them that I publish the following fragments. In the case of the Greek fragments lack of time combined with a mistrust of my powers of deciphering the more illegible non-literary hands forbade me do more than select the most promising literary fragments. Among these Homer naturally predominates; but the gem of the collection is a lyric fragment, which may fairly certainly be ascribed to Alcaeus, though Dr. Grenfell who first noticed it attributed it to Sappho. A fragment of Demosthenes, a fragment of Dioscorides, and a vellum fragment of a Latin Bible, were the only others which I succeeded in identifying; but these, with the few tragic, comic, and medical fragments which I also reproduce, are, I think, first-fruits sufficient to show that the crop would not be barren, if it found a competent gleaner. (shrink)

"This book presents a distinctive version of a contractarian approach to law and justice. The work argues that law and justice are social norms that arise from a process of social evolution, and are binding only if and to the extent that they are mutually beneficial. It explicitly rejects accounts of law and justice that are based on morality, on the basis that morality itself is only legitimately founded on mutual advantage, But it also rejects most existing versions of contractarianism, (...) which are based on ideas of hypothetical agreements by rational contractors, in favour of an approach that is based on actually existing social norms, but advocates critically examining these norms and discarding those that are not truly mutually beneficial. The first half of the book develops the approach, while the second half explores some of its implications for law. It argues for a left-libertarian approach to property, an approach largely based on the common law of tort, contract and criminal law, and a rejection of most statutory law, which is based not on mutual advantage but rather on benefiting some at the expense of others. However, it ultimately recognises that there are those who want a more extensive state than this approach allows, and advocates a strong form of federalism to allow this, provided robust exit rights are provided"--. (shrink)

With a few exceptions, Thomists have by and large failed to engage with the historical and hermeneutical turns in philosophy and theology. This article offers an account of what the beginnings of a Thomistic engagement with recent hermeneutical philosophy might look like. In order to develop such an account, the author turns to arguably the most important contemporary hermeneutical philosopher, namely Hans-Georg Gadamer, as a dialogue partner. Despite claims to the contrary, this article argues that Gadamer does not successfully deal (...) with the specter of relativism. It goes on to show how that the thought of Thomas Aquinas can ably deal with this specter. There are two central elements in the argument put forward. Firstly, the author argues that the human being exists in between God as First Efficient Cause of all that exists and God as Final Cause of all that exists. This existence between God as First Efficient Cause of all that exists and God as Final Cause of all that exists furnishes the connatural context in which human knowing and willing unfolds. Secondly, he considers the dynamics of “interinvolvement” between intellect and will. The upshot of these arguments is a construal of reason that is at once capable of universal truth and hermeneutical in nature. Indeed, the universal range of reason and its hermeneutical dimension are in no way opposed to each other: they are rather dual aspects of one and the same reality. (shrink)

John Paul II’s encyclical Veritatis Splendor lists several objections to the theological concept of fundamental option. This article summarizes that concept, primarily as presented by Josef Fuchs. It then locates the concept, as Fuchs did, in the overarching theological anthropology of Karl Rahner, which is discussed at length. The objections of the encyclical are then engaged. In some cases, it is shown, the encyclical misunderstands fundamental option. In other cases, its rejection of the idea seems to entail rejection also of (...) traditional Catholic doctrines. All this leads to concluding reflections in which fundamental option is evaluated in terms of its cogency, adequacy, usefulness, and necessity for a contemporary Christian anthropology. (shrink)

The systemic role of corruption and its link to low human development is explored. The extractive resource industry is presented as anarena where conditions for corruption—monopoly and discretion without accountability—are especially intense. Corruption is maintainedby a self-reinforcing cycle. Multiple stakeholders are involved in the maintenance of and/or opposition to the cycle: investing corporations, host country regimes and officials, inter-governmental bodies like the OECD, industry associations, non-governmental organization (NGO) watchdogs like Transparency International, and international agencies facilitating global investment like the World (...) Bank. Complementarity of interests between the demand and supply sides provides strong incentives for entrenched players to maintain corruptive relationships, to protect past gains and sustain current ones. Compulsory international regulation, maximum transparency, effective detection, and enforcement are recommended to enhance accountability, thereby reversing the cycle. It is also necessary to create a corporate culture built on integrity, if regulation itself is to succeed. (shrink)

DEATH is one of the central themes of existentialist writing. This is to be expected since the focal point of all its reflection is human existence. Existentialism explores the innermost depths of experienced selfhood. Inevitably, the authentic self must face the problem of man’s origin and destiny or, in Heideggerian terms, the beginning and ending of his Being-in-the-world. Death is a profoundly human problem, inseparably bound up with the psychological and ontological structure of the human mode of being or Dasein.

Drawing on a landscape analysis of existing data-sharing initiatives, in-depth interviews with expert stakeholders, and public deliberations with community advisory panels across the U.S., we describe features of the evolving medical information commons. We identify participant-centricity and trustworthiness as the most important features of an MIC and discuss the implications for those seeking to create a sustainable, useful, and widely available collection of linked resources for research and other purposes.

This research note analyzes the relationship between indicators of corporate social and financial performance within a comprehensive theoretical framework. The results, based on data for 67 large U.S. corporations for 1982-1992, reveal no significant negative social-financial performance relationships and strong positive correlations in both contemporaneous and lead-lag formulations.

Integrating concepts of maintenance and of origins is essential to explaining biological diversity. The unified theory of evolution attempts to find a common theme linking production rules inherent in biological systems, explaining the origin of biological order as a manifestation of the flow of energy and the flow of information on various spatial and temporal scales, with the recognition that natural selection is an evolutionarily relevant process. Biological systems persist in space and time by transfor ming energy from one state (...) to another in a manner that generates structures which allows the system to continue to persist. Two classes of energetic transformations allow this; heat-generating transformations, resulting in a net loss of energy from the system, and conservative transformations, changing unusable energy into states that can be stored and used subsequently. All conservative transformations in biological systems are coupled with heat-generating transformations; hence, inherent biological production, or genealogical proesses, is positively entropic. There is a self-organizing phenomenology common to genealogical phenomena, which imparts an arrow of time to biological systems. Natural selection, which by itself is time-reversible, contributes to the organization of the self-organized genealogical trajectories. The interplay of genealogical (diversity-promoting) and selective (diversity-limiting) processes produces biological order to which the primary contribution is genealogical history. Dynamic changes occuring on times scales shorter than speciation rates are microevolutionary; those occuring on time scales longer than speciation rates are macroevolutionary. Macroevolutionary processes are neither redicible to, nor autonomous from, microevolutionary processes. (shrink)

A series of summary descriptions of the theories of the Pre-Socratics, Sophists, Socrates, Plato, Aristotle, Stoics, Epicureans, Sceptics, and Gnostics, the book suffers from controversial points made in an off-hand fashion. The two following interpretations are especially perplexing, if not erroneous: that Plato's philosophy is "materialistic in outlook" since by ideas he means "the material perfects of the material imperfects"; and that "the Atomistic philosophy is teleological" since it depicts the atoms as "intelligent agents," "striving for an ultimate purpose."—E. O. (...) T. (shrink)

The priority monist holds that the cosmos is the only fundamental object, of which every other concrete object is a dependent part. One major argument against monism goes back to Russell, who claimed that pluralism is favoured by common sense. However, Jonathan Schaffer turns this argument on its head and uses it to defend priority monism. He suggests that common sense holds that the cosmos is a whole, of which ordinary physical objects are arbitrary portions, and that arbitrary portions depend (...) for their existence on the existence of the whole. In this paper, we challenge Schaffer’s claim that the parts of the cosmos are all arbitrary portions. We suggest that there is a way of carving up the universe such that at least some of its parts are not arbitrary. We offer two arguments in support of this claim. First, we shall outline semantic reasons in its favour: in order to accept that empirical judgements are made true or false by the way the world is, one must accept that the cosmos includes parts whose existence is not arbitrary. Second, we offer an ontological argument: in order for macro-physical phenomena to exist, there must be some micro-physical order which they depend upon, and this order must itself be non-arbitrary. We conclude that Schaffer’s common sense argument for monism cannot be made to work. (shrink)