Plant reproduction is vital for species survival, and is also central to the production of food for human consumption. Seeds result from the successful fertilization of male and female gametes, but our understanding of the development, differentiation of gamete lineages and fertilization processes in higher plants is limited. Germ cells in animals diverge from somatic cells early in embryo development, whereas plants have distinct vegetative and reproductive phases in which gametes are formed from somatic cells after the plant has made (...) the transition to flowering and the formation of the reproductive organs. Recently, novel insights into the molecular mechanisms underlying male germ‐line initiation and male gamete development in plants have been obtained. Transcriptional repression of male germ‐line genes in non‐male germ‐line cells have been identified as a key mechanism for spatial and temporal control of male germ‐line development. This review focuses on molecular events controlling male germ‐line development especially, on the nature and regulation of gene expression programs operating in male gametes of flowering plants. BioEssays 29:1124–1132, 2007. © 2007 Wiley Periodicals, Inc. (shrink)

Purpose E-commerce companies use dark patterns to manipulate customer decisions to survive in the crowded online market and make profit. Although some online customers are aware of the dark patterns, they cannot overcome such manipulations. Therefore, the purpose of this study is to identify and model the barriers to overcoming dark patterns using total interpretive structural modeling (TISM). Design/methodology/approach Barriers to overcoming dark patterns were identified from the extant literature and were validated by a panel of 18 domain experts. In (...) the modeling phase, TISM technique was used to identify the relationships between the barriers and assign priority to the barriers. Finally, the barriers were plotted and classified into three categories. Findings User unawareness, trust in brands and normalization of aggressive marketing were found to be the highest priority barriers. Whereas, designer bias, user fatigue, short-term user benefits and design complexity were identified as the most challenging barriers because they have least dependence over the other barriers. Research limitations/implications Because TISM results are based on the opinion of domain experts, other statistical techniques could be applied for validation. Practical implications This study would educate online customers, while assisting online user communities and regulatory bodies to devise strategies to overcome dark patterns. Additionally, business managers could use the study’s findings to encourage designers to embrace ethical design methods as a competitive advantage. Originality/value This study contributes to the research as it is first of its kind to examine the link between dark pattern barriers. (shrink)

All living things have sensory capacities. Plants, in particular, have sensory receptors, transduce the activations of these receptors, and process these outputs in order to manage actions that demand sensory integration. However, there is a kind of sensory function that plants cannot perform. They cannot sense something as other than themselves. Animals, by contrast, perceive. They experience two kinds of "othering impressions"—impressions of entities as located outside and available for interaction, and hence as distinct from the perceiving subject. First, they (...) represent external entities in a "body scheme" that enables sensorimotor interaction with these entities. Second, higher animals such as mammals and birds and possibly fish, represent these entities as located relative to a "cognitive map." These othering impressions are very important because they are the foundation for the human conceptions of the self and other. (shrink)

Throughout this research, imposing the training of an Artificial Neural Network (ANN) to play tic-tac-toe bored game, by training the ANN to play the tic-tac-toe logic using the set of mathematical combination of the sequences that could be played by the system and using both the Gradient Descent Algorithm explicitly and the Elimination theory rules implicitly. And so on the system should be able to produce imunate amalgamations to solve every state within the game course to make better of results (...) of winnings or getting draw. (shrink)

Our concern in this paper lies with a common argument from racial discrimination to realism about races: some people are discriminated against for being members of a particular race (i.e., racial discrimination exists), so some people must be members of that race (i.e., races exist). Error theorists have long responded that we can explain racial discrimination in terms of racial attitudes alone, so we need not explain it in terms of race itself. But to date there has been little detailed (...) discussion of whether it is better to explain racial discrimination in terms of race or in terms of racial attitudes alone. Our goal is to offer a novel and detailed argument in defense of explaining racial discrimination in terms of racial attitudes alone, by attending to the neglected phenomenon of misperception discrimination, which involves differential treatment due to misperceived race. We argue that the discriminatory action in misperception cases must be explained in the same way as cases where (according to the realist) the victim’s race is accurately perceived. Thus, the victim’s actual race cannot provide the best explanation. The main upshot of our argument is that explanatory arguments from racial discrimination to realism about race fail. (shrink)

This book offers an original intersection of concepts from Immanuel Kant’s moral command ethics and Søren Kierkegaard’s existential ethics. The Kantian formulation of moral law is based on theoretical ground while Kierkegaardian ethics of the quest for selfhood views it as the very act of living. The present work provides an account of both these perspectives and questions whether these approaches to morality are mutually exclusionary. Using Slavoj Žižek’s ‘parallax view’ in the realm of morality, it argues that moral philosophy (...) must engage with a constant critique of ‘difference’ around which the transformation of our various perspectives to morality revolves. This work appeals for furtherance of the conversation model and participation of perspectives to transcend ‘positional confinement’. It advocates the traversing of the ethical parallax to allow for intellectual openness and an empathetic perception of the ‘other’. (shrink)

It is evident that disunity is a reality wherever we look in the world today. Even within the Body of Christ there is a lack of unity that is appalling. The universal church needs to develop a greater urgency about it and at the same time, do more about it than most are doing. If the universal church comes to a realization that genuine Christian unity is already ‘an established reality and can progressively be realized and brought into the actualities (...) of life’, perhaps then the universal church would strive harder to create and maintain a sustainable Christian unity making it a ‘lived reality’. As a Reformed family, we believe in the creative and redemptive activity of God, inaugurated in Jesus Christ but not yet completed. The Kingdom of God is a present reality, which will be expressed anew in all its fullness. This is our Christian hope, which is fundamental to our Christian faith and Christian faith is expectant faith. The universal Church therefore must offer the image of a people who are mature in faith and capable of finding a meeting-point beyond denominational barriers and not the image of a people divided and separated because of ecclesiastical differences. It is hoped that the Global Christian Forum will continue to reflect that image. (shrink)

Hunger is a psychological state that serves physiological energy homeostasis. I argue that it is a pure underived desire to eat and examine its role in homeostasis. After scene‐setting explanations of homeostasis and desire, I argue that hunger is a close phenomenological match with underived desire. Then, I show why desire is an apt instrument for energy homeostasis. Finally, I argue that energy homeostasis is a multi‐factorial future‐regarding behavioural strategy. Hunger is a special purpose sensory state that serves only to (...) implement the strategy. Thus, it is a sensory desire. I conclude by reflecting on the credibility of this desire. (shrink)

In this Handbook entry, I review how colour similarity spaces are constructed, first for physical sources of colour and secondly for colour as it is perceptually experienced. The unique hues are features of one of the latter constructions, due initially to Hering and formalized in the Swedish Natural Colour System. I review the evidence for a physiological basis for the unique hues. Finally, I argue that Tye's realist approach to the unique hues is a mistake.

Bhakti is a remarkable existential tendency that shows itself in the rich expanse of the tradition originating from the Vedas. Recognized as a prize possession of the religions, philosophies, and culture of India, it has often won fascination and admiration from students of Eastern heritage. However, its nature, role, and history remain misunderstood and have not received all the attention they deserve. Its role as a gatherer of life, love, thought, and the divine is missed in its partial characterizations as (...) “Hindu devotion” or “divine love” or “theism implicit in polytheism.” Its status as a perennial thematic concept of the Indian civilization is missed when its pervasiveness is overlooked by the cultural historians preoccupied primarily with its periodic eruptions. Furthermore, the philosophical role of bhakti is missed when it is deemed as an alternative to jnana (knowledge) rather than “the living of jnana.”. (shrink)

Philosophy of Tamils in the context of Indian philosophy.

Memory seems intuitively to consist in the preservation of some proposition (in the case of semantic memory) or sensory image (in the case of episodic memory). However, this intuition faces fatal difficulties. Semantic memory has to be updated to reflect the passage of time: it is not just preservation. And episodic memory can occur in a format (the observer perspective) in which the remembered image is different from the original sensory image. These difficulties indicate that memory cannot be preserved content. (...) It is proposed that what is preserved in memory isan underlying "trace", and that in every act of remembering, memorial content is reconstructed from the preserved trace. (shrink)

Seeing, Doing, and Knowing is an original and comprehensive philosophical treatment of sense perception as it is currently investigated by cognitive neuroscientists. Its central theme is the task-oriented specialization of sensory systems across the biological domain. Sensory systems are automatic sorting machines; they engage in a process of classification. Human vision sorts and orders external objects in terms of a specialized, proprietary scheme of categories - colours, shapes, speeds and directions of movement, etc. This 'Sensory Classification Thesis' implies that sensation (...) is not a naturally caused image from which an organism must infer the state of the world beyond; it is more like an internal communication, a signal concerning the state of the world issued by a sensory system, in accordance with internal conventions, for the use of an organism's other systems. This is why sensory states are both easily understood and persuasive.Sensory classification schemes are purpose-built to serve the knowledge-gathering and pragmatic needs of particular types of organisms. They are specialized: a bee or a bird does not see exactly what a human does. The Sensory Classification Thesis helps clarify this specialization in perceptual content and supports a new form of realism about the deliverances of sensation: 'Pluralistic Realism' is based on the idea that sensory systems coevolve with an organism's other systems; they are not simply moulded to the external world. The last part of the book deals with reference in vision. Cognitive scientists now believe that vision guides the limbs by means of a subsystem that links up with the objects of physical manipulation in ways that bypass sensory categories. In a novel extension of this theory, Matthen argues that 'motion-guiding vision' is integrated with sensory classification in conscious vision. This accounts for the quasi-demonstrative form of visual states: 'This particular object is red', and so on. He uses this idea to cast new light on the nature of perceptual objects, pictorial representation, and the visual representation of space. (shrink)

We have argued elsewhere that: (A) Natural selection is not a cause of evolution. (B) A resolution-of-forces (or vector addition) model does not provide us with a proper understanding of how natural selection combines with other evolutionary influences. These propositions have come in for criticism recently, and here we clarify and defend them. We do so within the broad framework of our own “hierarchical realization model” of how evolutionary influences combine.

This paper compares the findings of content analyses of the corporate codes of ethics of Canada's largest corporations in 1992 and 2003. For both years, a modified version of a technique used in several other studies was used to determine and categorize the contents of the codes. It was found, inter alia, that, in 2003, as in 1992, more of the codes were concerned with conduct against the firm than with conduct on behalf of the firm. Among the changes from (...) 1992 to 2003 were a significant increase in the frequency of mention of environmental affairs, legal responsibility as the basis of codes and enforcement/compliance procedures. (shrink)

Violence risk assessment tools are increasingly used within criminal justice and forensic psychiatry, however there is little relevant, reliable and unbiased data regarding their predictive accuracy. We argue that such data are needed to (i) prevent excessive reliance on risk assessment scores, (ii) allow matching of different risk assessment tools to different contexts of application, (iii) protect against problematic forms of discrimination and stigmatisation, and (iv) ensure that contentious demographic variables are not prematurely removed from risk assessment tools.

What is color? What is color vision? Most philosophers answer by reference to humans: to human color qualia, or to the environmental properties or "quality spaces" perceived by humans. It is argued, with reference to empirical findings concerning comparative color vision and the evolution of color vision, that all such attempts are mistaken. An adequate definition of color vision must eschew reference to its outputs in the human cognition and refer only to inputs: color vision consists in the use of (...) wavelength discrimination in the construction of visual representations. A color quality is one that is generated from such processing. (shrink)

This book incorporates seven 'Introductions' that Hegel wrote for each of his major works: the Phenomenology, Logic, Philosophy of Right, History, Fine Art, Religion and History of Philosophy, and includes an Introduction and Epilogue by the Editors, serving to introduce Hegel to the reader and to situate him and his works into their wider context.

Scientists are often bemused by the efforts of philosophers essaying a theory of colour: colour science sports a huge array of facts and theories, and it is unclear to its practitioners what philosophy can or is trying to contribute. Equally, philosophers tend to be puzzled about how they can fit colour science into their investigations without compromising their own disciplinary identity: philosophy is supposed to be an a priori investigation; philosophers do not work in psychophysics labs – not in their (...) professional capacity, anyway.These inter-disciplinary barriers arise out of misunderstanding. Philosophers should not so much attempt to contribute to empirical theories of colour, as to formulate philosophical theories of colour. Philosophy is concerned with appearance and reality, object and property, function and representation, and other such fundamental categories of ontology and epistemology. Philosophical theories attempt to fit colour into these categories; such theories do not compete with colour science. However, fitting colour into philosophical theories means dealing with colour as it really is – and one cannot know what it is without consulting the psychologists. That is why philosophers need an up-to-date understanding of psychological theories of colour. (shrink)

A hitherto neglected form of explanation is explored, especially its role in population genetics. “Statistically abstractive explanation” (SA explanation) mandates the suppression of factors probabilistically relevant to an explanandum when these factors are extraneous to the theoretical project being pursued. When these factors are suppressed, the explanandum is rendered uncertain. But this uncertainty traces to the theoretically constrained character of SA explanation, not to any real indeterminacy. Random genetic drift is an artifact of such uncertainty, and it is therefore wrong (...) to reify it as a cause of evolution or as a process in its own right. *Received July 2009. †To contact the author, please write to: Department of Philosophy, University of Toronto, 170 St. George St., Toronto, ON M5R 2M8, Canada; e‐mail: mohan[email protected]. (shrink)

Issued with Sandal, M. L. Introduction to the Mimamsa sutras of Jaimini. New York, [1979].

How do fitness and natural selection relate to other evolutionary factors like architectural constraint, mode of reproduction, and drift? In one way of thinking, drawn from Newtonian dynamics, fitness is one force driving evolutionary change and added to other factors. In another, drawn from statistical thermodynamics, it is a statistical trend that manifests itself in natural selection histories. It is argued that the first model is incoherent, the second appropriate; a hierarchical realization model is proposed as a basis for a (...) statistical treatment. It emerges that natural selection does not cause evolution; it just is evolution. The theory incorporates relations of statistical correlation, but not the kind of causation found in fundamental physical processes. (shrink)

Homeostatic Property Cluster (HPC) theory suggests that species and other biological taxa consist of organisms that share certain similarities. HPC theory acknowledges the existence of Darwinian variation within biological taxa. The claim is that “homeostatic mechanisms” acting on the members of such taxa nonetheless ensure a significant cluster of similarities. The HPC theorist’s focus on individual similarities is inadequate to account for stable polymorphism within taxa, and fails properly to capture their historical nature. A better approach is to treat distributions (...) of traits in species populations as irreducible facts, explained in terms of selection pressures, genealogy, and other evolutionary factors. We call this view Population Structure Theory (PST). PST accommodates the view, implicit in biological systematics, that species are identified by reference to particular historical populations. (shrink)

This paper presents a new account of aesthetic pleasure, according to which it is a distinct psychological structure marked by a characteristic self-reinforcing motivation. Pleasure figures in the appreciation of an object in two ways: In the short run, when we are in contact with particular artefacts on particular occasions, aesthetic pleasure motivates engagement and keeps it running smoothly—it may do this despite the fact that the object we engagement is aversive in some ways. Over longer periods, it plays a (...) critical role in shaping how we engage with objects to get this kind of pleasure from them. This account is yoked to a broadly functional understanding of art: it is not the nature of the object that makes it art, but the nature of the response that it is designed to elicit. The view does not, however, rest on individual psychology alone, as some other functional accounts do. Crucially, it is argued that shared cultural context is a key determinant of the pleasure we derive from aesthetic artefacts. The pleasure of art is always communal and communicative. (shrink)

The aim of this article is to return to the concept of bricolage as theorized in 1962 by the French anthropologist Claude Lévi-Strauss and examine its presence and utility in the art and architectural history of the twentieth century. While Lévi-Strauss was the first theorist to present bricolage as an analogy for the creation of mythical thought among indigenous cultures, the concept has seen a wide range of conceptual, methodological and practical applications across different fields, including design, visual arts, urban (...) planning and the built environment. This article will examine the applicability of bricolage as a technical metaphor for the creative process and its relevance to artistic creation by tracing its trajectory over the course of the twentieth century. It will evaluate the significance of objects and events of ‘everyday life’ in the creative practices of contemporary artists, and draw attention to the emerging role of the architect as bricoleur or improviser, to conclude that it was the art of the ‘ordinary’ that gave creative inspiration to twentieth-century artists and architects to engage with the materiality and past experiences of the world. (shrink)

The uniqueness of Psychiatry as a medical speciality lies in the fact that aside from tackling what it considers as illnesses, it has perchance to comment on and tackle many issues of social relevance as well. Whether this is advisable or not is another matter; but such a process is inevitable due to the inherent nature of the branch and the problems it deals with. Moreover this is at the root of the polarization of psychiatry into opposing psychosocial and biological (...) schools. This gets reflected in their visualization of scope, in definitions and in methodology as well. Whilst healthy criticism of one against the other school is necessary, there should be caution against hasty application of one's frame of reference to an approach that does not intend to follow, or conform to, one's methodology. This should be done within the referential framework of the school critically evaluated, with due consideration for its methods and concepts. Similarly, as at present, there is no evidence to prove one or the other of these approaches as better, aside from personal choice. We can say so even if there is a strong paradigm shift towards the biological at present. A renaissance of scientific psychoanalysis coupled with a perceptive neurobiology which can translate those insights into testable hypotheses holds the greatest promise for psychiatry in the future. This suggests the need for unification of diverse appearing approaches to get a more comprehensive and enlightened worldview. It requires a highly integrative capacity. Just as a physicist thinks simultaneously in terms of particles and waves, a psychiatrist must think of motives, emotions and desires in the same breath as neurobiology, genetics and psychopharmacology. However, the integration must be attempted without destroying the internal cohesiveness of the individual schools. This will give a fair chance for polarization in which a single proper approach in psychiatry could emerge, which may be a conglomerate of diverse appearing approaches of today, or one which supersedes the rest. A synthesis of cognitive psychology and neuroscience offers the greatest promise at present. (shrink)