Locus equations contain an economical set of hidden (i.e., not directly observable in the data) parameters of speech that provide an elegant way of characterizing the ubiquitous context-dependent behaviors exhibited in speech acoustics. These hidden parameters can be effectively exploited to constrain the huge set of context-dependent speech model parameters currently in use in modern, mainstream speech recognition technology.

Evaluating the current locus equation under ideal conditions identifies important and unexpected parameter dependencies. Locus equation (LE) utility, either as a valid laboratory tool or possible invariant cue, depends on stringent specification of critical parameters and rigorous empirical testing.

The potential role of locus equations in three existing models of human classification behavior is examined. Locus equations can play a useful role in single-prototype and boundary-based models for human consonant recognition by reducing model complexity.

Although neural encoding by bats and owls presents seductive analogies, the major contribution of locus equations and orderly output constraints discussed by Sussman et al. is the demonstration that important acoustic information for speech perception can be captured by elegant and neurally-plausible learning processes.

This commentary focuses on the claim that perceptual demands have caused the linearity exhibited by locus equations. I discuss results of an experiment demonstrating that, contrary to Sussman et al.'s claims, locus equations do not have relevance for the perception of stop consonants. I therefore argue against the plausibility of the orderly output constraint.

In their important work on locus equations, Sussman and his colleagues have helped to simplify the theoretical problem of how human listeners identify place of articulation contrasts among consonants, but much work remains before this problem is solved.

Two issues are addressed in this commentary: the universality and the “psychological reality” of locus equations as cues to place of articulation. Preliminary data collected in our laboratory suggest that locus equations do not reliably distinguish place of articulation for fricatives. Additionally, perception studies show that listeners can identify place of articulation based on much less temporal information than that required for deriving locus equations.

Locus equations fail to provide adequate abstraction to capture the English phoneme /g/. They also cannot characterize final consonants or their relation to pre-vocalic consonants. However, locus equations are approximately abstract enough to define the upper limit on phonological distinctions for place of articulation. Hence, locus equations seem to mediate phonetic and phonological perceptual abilities.

Although the relations between second formant (F2) onset and F2 vowel are extremely regular and contain important information about place of articulation of the voiced stops, they are not sufficient for its identification. Using quadratic discriminant analysis of a new data set, it is shown that F3 onset and F3 vowel can also contribute substantial additional information to help identify the consonants.

Although an individual speaker's productions obey locus equations, whether listeners' perceptions are based on them needs further exploration. Comparing the results from the perceptual experiments to predicted identifications, one sees qualitative similarities and some discrepancies. However, the variability of locus equations and individual consonant-vowel (CV) tokens across speakers seems problematic if listeners are using locus equations for perception.

An alternative account of the locus equation phenomenon based on recent theories of speech movement planning is provided. It is similar to Sussman et al.'s account in positing that our productions are tuned to satisfy auditory constraints. It differs by suggesting that the locus equation effect may be an epiphenomenon of a planning process that satisfies simpler auditory constraints.

Using an articulatory model we show that locus equations make special use of the phonetic space of possible locus patterns. There is nothing articulatorily inevitable about their linearity or slope- intercept characteristics. Nonetheless, articulatory factors do play an important role in the origin of simulated locus equations, but they cannot, by themselves, provide complete explanations for the observed facts. As in other domains, there is interaction between perceptual and motor factors.

Sussman and colleagues provide no evidence supporting their claim that the human vocal production system is specialized to produce locus equations with high correlations and linearity. We propose the alternative null hypothesis that these features result from physical and physiological factors common to all mammalian vocal tracts and we recommend caution in assuming that human speech production mechanisms are unique.

The correct locus (or loci) of binding theory has been a matter of much discussion. Theories can be seen as varying along at least two dimensions. The rst is whether binding theory is con gurationally determined (that is, the theory exploits the geometry of a phrase marker, appealing to such purely structural notions as c-command and government) or whether the theory depends rather on examining the relations between items selected by a predicate (where by selection I am intending to (...) cover everything from semantic dependencies to syntactic subcategorization). The second is the level of grammar on which binding is de ned. Attempting to roughly equate levels across di erent theories, suggestions have included the semantics/lexical conceptual structure (Jackendo 1992), thematic structure (Jackendo 1972, Wilkins 1988), argument structure/D-structure/initial grammatical relations (Manning 1994, Belletti and Rizzi 1988, Perlmutter 1984), surface syntax/grammatical relations, logical form, linear order, pragmatics (Levinson 1991), and discourse (Iida 1992). The data is su ciently varied and complex that many theories end up as mixtures, variously employing a combination of elements along both dimensions (for instance, Chomsky (1986) relies purely on con gurational notions for the relationship between an anaphor and its antecedent, but uses concepts from selection in the de nition of the binding domain of an anaphor). LFG has always rejected a con gurational account of binding. For instancError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMapError: Illegal entry in bfrange block in ToUnicode CMape, Simpson (1991) argues that a con gurational theory of binding in Warlpiri cannot be maintained, among other reasons because nite clauses lack a VP.. (shrink)

Using core self-evaluation theory, the current study assesses the effect of internal work locus of control and bricolage on social entrepreneurship orientation. We adopted the cross-sectional survey design using a sampling frame to engage 400 top executives of social enterprises in mainland China. Three hundred and seventy-two of the executives replied, presenting a response rate of 93%. Results of structural equation modeling analysis show significant positive relationships between internal work locus of control, bricolage, and social entrepreneurship orientation. The (...) positive mediating effect of bricolage on the relationship between internal work locus of control and social entrepreneurship orientation was also found to be true. Consequently, to foster social entrepreneurship orientation, top executives of social enterprises need to gather available resources for bricolage tasks. These findings contribute new knowledge to how internal work locus of control affects social entrepreneurship orientation through the bricolage activity of Chinese social enterprises. Through core self-evaluation theory, we demonstrate the effect of internal work locus of control as a preceding factor in the relationship between bricolage and social entrepreneurship orientation. (shrink)

Neuroethological investigations of mammalian and avian auditory systems have documented species-specific specializations for processing complex acoustic signals that could, if viewed in abstract terms, have an intriguing and striking relevance for human speech sound categorization and representation. Each species forms biologically relevant categories based on combinatorial analysis of information-bearing parameters within the complex input signal. This target article uses known neural models from the mustached bat and barn owl to develop, by analogy, a conceptualization of human processing of consonant plus (...) vowel sequences that offers a partial solution to the noninvariance dilemma the locus equations orderly output constraint”) is hypothesized based on the notion of an evolutionarily conserved auditory-processing strategy. High correlation and linearity between critical parameters in the speech signal that help to cue place of articulation categories might have evolved to satisfy a preadaptation by mammalian auditory systems for representing tightly correlated, linearly related components of acoustic signals. (shrink)

The locus equation proposal ignores a fundamental difference between human speech perception and nonhuman echolocation and sound localization, offers a questionable account of the function of consonant-vowel coarticulation, and is further undermined if the effects of other forms of coarticulation are considered. The function of coarticulation is to convey phonetic information rapidly and reliably.

Locus equations are supposed to capture a perceptual invariant of place of articulation in consonants. Synthetic speech data show that human classification deviates systematically from the predictions of locus equations. The few studies that have contrasted predictions from competing theories yield mixed results, indicating that no current theory adequately characterizes the perceptual mapping from sound to phonetic symbol.

Locus equations offer promise for an understanding of at least some aspects of perceptual invariance in speech, but they were discovered almost fortuitously. With the present availability of powerful machine learning algorithms, ignorance -based automatic discovery procedures are starting to supplant knowledge-based scientific inquiry. Principles of self-learning and self-organization are powerful tools for speech research but remain somewhat under-utilized.

A number of studies have shown that phonetic peculiarities, especially at the coarticulation level, exist in the disfluent as well as in the perceptively fluent speech of people who stutter (PWS). However, results from fluent speech are disparate and not easily interpretable. Are the coarticulatory features a manifestation of the disorder, or rather a compensation for the disorder itself? Our purpose is to investigate the coarticulatory behavior in the fluent speech of PWS in the attempt to answer the question on (...) its symptomatic or adaptive nature. In order to achieve this, we have studied the speech of 21 adult PWS (10 French and 11 Italian) compared to that of 20 fluent adults (10 French and 10 Italian). The participants had to repeat simple CV syllables in short carrier sentences, where C = /b, d, g/ and V = /a, i, u/. Crucially, this repetition task was performed under a condition with normal auditory feedback (NAF) for both the groups, and under a fluency-enhancing condition (only for PWS) due to an altered auditory feedback (AAF). The degree of coarticulation was measured by means of the Locus Equations (LE). Under NAF conditions, the coarticulation degree observed in fluent PWS speech is lower than that of the PWNS, and, more importantly, in AAF condition, PWS coarticulation appears even weaker than in the NAF condition. The latter result allows to interpret the low degree of coarticulation found in fluent speech of PWS under NAF condition as a compensation for the disorder, based on the fact that coarticulation is weaker in fluency-enhancing conditions. Since a lower degree of coarticulation is associated to a greater separation between the places of articulation of the consonant and the vowel, these results are compatible with the hypothesis that larger articulatory movements could be responsible for the stabilization of the PWS speech motor system, increasing the kinesthetic feedback from the effector system. This interpretation shares with a number of relatively recent proposal the idea that stuttering derives from an impaired feedforward (open-loop) control system, which makes PWS rely more heavily on a feedback-based (closed loop) motor control strategy. (shrink)

This commentary focuses on the nature of combinatorial properties for speech and the locus equation. The presence of some overlap in locus equation space suggests that this higher order property may not be strictly invariant and may require other cues or properties for the perception of place of articulation. Moreover, combinatorial analysis in two-dimensional space and the resultant linearity appear to have a “special” status in the development of this theoretical framework. However, place of articulation is only one (...) of many phonetic dimensions in language. It is suggested that a multidimensional space including patterns derived in the frequency, amplitude, and time domains will be needed to characterize the phonetic categories of speech, and that although the derived properties ultimately may not meet the conditions of linearity, they will reflect a higher order acoustic invariance. (shrink)

The most frequent criticism of the target article is the lack of clear separability of human speech data relative to neuroethological data. A rationalization for this difference was sought in the tinkered nature of such new adaptations as human speech. Basic theoretical premises were defended, and new data were presented to support a claim that speakers maintain a low-noise relationship between F2 transition onset and offset frequencies for stops in pre-vocalic positions through articulatory choices. It remains a viable and testable (...) hypothesis that the phenomenon described by the locus equation is a functional adaptation of production mechanisms to processing preferences of the auditory system. (shrink)

The debate on the origin of the locus equation is circular. In this commentary the locus equation is obtained by way of a theoretical model based on acoustics without recourse to articulatory knowledge or perceptual constraints. The proposed model is driven by criteria of minimum energy and maximum simplicity.

Understanding spoken language involves far more than decoding a linear sequence of phonetic elements. In view of the inherent variability of the acoustic signal in spontaneous speech, it is not entirely clear that the sort of representation derived from locus equations is sufficient to account for the robustness of spoken language understanding under real-world conditions. An alternative representation, based on the low-frequency modulation spectrum, provides a more plausible neural foundation for spoken language processing.

The “land community” (or “biotic community”) that features centrally in Aldo Leopold’s Land Ethic has typically been equated with the concept of “ecosystem.” Moreover, some have challenged this central Leopoldean concept given the multitude of meanings of the term “ecosystem” and the changes the term has undergone since Leopold’s time (see, e.g., Shrader-Frechette 1996). Even one of Leopold’s primary defenders, J. Baird Callicott, asserts that there are difficulties in identifying the boundaries of ecosystems and suggests that we recognize that their (...) boundaries are determined by scientific questions ecologists pose (Callicott 2013). I argue that we need to rethink Leopold’s concept of land community in the following ways. First, we should recognize that Leopold’s views are not identical to those of his contemporaries (e.g., Clements, Elton), although they resemble those of some subsequent ecologists, including some of our contemporaries (e.g., O’Neill 2001, Post et al. 2007, Hastings and Gross 2012). Second, the land community concept does not map cleanly onto the concept of “ecosystem”; it also incorporates elements of the “community” concept in community ecology by emphasizing the interactions between organisms and not just the matter/energy flow of the ecosystem concept. Third, the boundary question can be illuminated by considering some of the recent literature on the nature of biological individuals (in particular, Odenbaugh 2007; Hamilton, Smith, and Haber 2009; Millstein 2009), focusing on concentrations of causal relations as determinative of the boundaries of the land community qua individual. There are challenges to be worked out, particularly when the interactions of community members do not map cleanly onto matter/energy flows, but I argue that these challenges can be resolved. The result is a defensible land community concept that is ontologically robust enough to be a locus of moral obligation while being consistent with contemporary ecological theory and practice. (shrink)

The causal nature of evolution is one of the central topics in the philosophy of biology. The issue concerns whether equations used in evolutionary genetics point to some causal processes or purely phenomenological patterns. To address this question the present article builds well-defined causal models that underlie standard equations in evolutionary genetics. These models are based on minimal and biologically plausible hypotheses about selection and reproduction, and generate statistics to predict evolutionary changes. The causal reconstruction of the evolutionary (...) principles shows adaptive evolution as a genuine causal process, where fitness and selection are both causes of evolution. 1 Introduction2 The Philosophical Puzzle3 Causal Models4 Causal Foundations of Evolutionary Genetics4.1 Univariate quantitative genetics model4.1.1 The causal graph4.1.2 Structural equations4.1.3 Deriving evolutionary transition functions4.2 One-locus population genetics model5 Evolution as a Causal Process5.1 Selection as a causal process5.2 Causes of evolutionary change6 Conclusion. (shrink)

The causal nature of evolution is one of the central topics in the philosophy of biology. The issue concerns whether equations used in evolutionary genetics point to some causal processes or purely phenomenological patterns. To address this question the present article builds well-defined causal models that underlie standard equations in evolutionary genetics. These models are based on minimal and biologically plausible hypotheses about selection and reproduction, and generate statistics to predict evolutionary changes. The causal reconstruction of the evolutionary (...) principles shows adaptive evolution as a genuine causal process, where fitness and selection are both causes of evolution. 1 Introduction2 The Philosophical Puzzle3 Causal Models4 Causal Foundations of Evolutionary Genetics4.1 Univariate quantitative genetics model4.1.1 The causal graph4.1.2 Structural equations4.1.3 Deriving evolutionary transition functions4.2 One-locus population genetics model5 Evolution as a Causal Process5.1 Selection as a causal process5.2 Causes of evolutionary change6 Conclusion. (shrink)

The rash of high-profile accounting frauds involving internal corporate accountants calls into question the individual accountant’s perceptions of the ethical climate within their organization and the limits to which these professionals will tolerate unethical behavior and/or accept it as the norm. This study uses social cognitive theory to examine the antecedents of individual corporate accountant’s perceived personal fit with their organization’s ethical climate and empirically tests how these factors impact organizational attitudes. A survey was completed by 203 corporate accountants to (...) assess their perception of relevant variables. The results of the structural equation model indicate three significant antecedents relating to ethical climate fit: higher internal levels of locus of control; greater numbers of prior job changes; and higher perceptions of an increasingly better fit with the firm’s ethical climate. Our results also indicate that higher levels of perceived fit to the ethical climate of a firm are associated with higher levels of perceived job satisfaction and organizational commitment. We also theorize that perceptions of an organization’s ethical climate may be reflections of client narcissism and serve a potential indicator of fraud risk. This is an important topic of study, since current auditing standards call for auditors to examine organizational attitudes toward fraud, but offer minimal guidance in doing so. (shrink)

Background Moral distress is a well-recognized term for emotional, cognitive, and physical reactions of professionals, when facing conflicts between perceived obligations and institutional constraints. Though studied across medical roles, limited research exists among physiotherapists. Research Question What factors contribute to Moral distress among physiotherapists and how do they cope? Objectives To develop and test a multifaceted model of Moral distress and gain an in-depth understanding of the phenomena. Research Design A 2017–2022 mixed-methods study: (1) Survey of 407 physiotherapists quantitatively testing (...) a literature-based model analyzing relationships between Moral distress, Moral sensitivity, Locus of control, Self-efficacy, Ethical climate perceptions and demographics, analyzed by descriptive and inferential statistics, multiple comparisons and structural equation modelling (SPSS26, SAS, AMOS); (2) Semi-structured interviews with 21 physiotherapists examining Moral distress experiences using meticulous phenomenological analysis. Participants and Context Israeli physiotherapists from various occupational settings recruited via professional networks. Ethical Considerations The Haifa University Ethics Committee authorized the study. Informed consent was obtained for the anonymous survey and before interviews regarding recording, and quote use. Findings Quantitative results showed moderately high average Moral distress, significantly higher among women and paediatric physiotherapists, positively correlating with Moral sensitivity. Qualitative findings revealed intense emotions around Moral distress experiences, inner conflicts between care ideals and constraints, and coping strategies like reflective skills. Senior therapists, despite higher self-efficacy and moral sensitivity, still reported persistent high distress. Discussion Moral distress has complex links with moral sensitivity, self-efficacy, perceived professional autonomy and organizational support. A renewed framework emerged explaining relations between moral distress and personal, professional and organizational factors. Conclusions Multidimensional insights help identify Moral distress causes and coping strategies among physiotherapists, advancing theory. Conclusions can shape ethics training programs and competencies. (shrink)

Abstract:This study examined the relationship between the individual difference variables of personal moral philosophy, locus of control, Machiavellianism, and just world beliefs and ethical judgments and behavioral intentions. A sample of 602 marketing practitioners participated in the study. Structural equation modeling was used to test hypothesized relationships. The results either fully or partially supported hypothesized direct effects for idealism, relativism, and Machiavellianism. Findings also suggested that Machiavellianism mediated the relationship between individual difference variables and ethical judgments/behavioral intentions.

This paper gives a detailed narrative of a controversial empirical research in postwar population genetics, the analysis of the cytological polymorphisms of an Australian grasshopper, Moraba scurra. This research intertwined key technical developments in three research areas during the 1950s and 1960s: it involved Dobzhansky’s empirical research program on cytological polymorphisms, the mathematical theory of natural selection in two-locus systems, and the building of reliable estimates of natural selection in the wild. In the mid-1950s the cytologist Michael White discovered (...) an interesting case of epistasis in populations of Moraba scurra. These observations received a wide diffusion when theoretical population geneticist Richard Lewontin represented White’s data on adaptive topographies. These topographies connected the information on the genetic structure of these grasshopper populations with the formal framework of theoretical population genetics. As such, they appeared at the time as the most successful application of two-locus models of natural selection to an empirical study system. However, this connection generated paradoxical results: in the landscapes, all grasshopper populations were located on a ridge while they were expected to reach a peak. This puzzling result fueled years of research and triggered a controversy attracting contributors from Australia, the United States and the United Kingdom. While the original problem seemed, at first, purely empirical, the subsequent controversy affected the main mathematical tools used in the study of two-gene systems under natural selection. Adaptive topographies and their underlying mathematical structure, Wright’s mean fitness equations, were submitted to close scrutiny. Suspicion eventually shifted to the statistical machinery used in data analysis, reflecting the crucial role of statistical inference in applied population genetics. In the 1950s and 1960s, population geneticists were not simply in search for new generalizations about the evolutionary process and for new evidence about genetic variation: struggling against statistical artifacts, they were searching for reliable tests and descriptors to analyze their data. (shrink)

This paper starts from a nonlinear fermion field equation of motion with a strongly coupled self-interaction. Nonperturbative quark solutions of the equation of motion are constructed in terms of a Reggeized infinite component free spinor field. Such a field carries a family of strongly interacting unstable compounds lying on a Regge locus in the analytically continued quark spin. Such a quark field is naturally confined and also possesses the property of asymptotic freedom. Furthermore, the particular field self-regularizes the interactions (...) and naturally breaks the chiral invariance of the equation of motion. We show why and how the existence of such a strongly coupled solution and its particle-family, wave duality forces a change in the field equation of motion such that it conserves C, P, T, although its individual interaction terms are of V-A and thus C, P nonconserving type. (shrink)

Philosophers disagree how abstract, theoretical principles can be applied to instances. This paper generates a puzzle for law theorists, causal theorists and inductivists alike. Intractability can force scientists to use a "semi-empirical" method, in which some of an equation's theoretically-determinable parameters are replaced with values taken directly from the data. This is not a purely deductive or inductive process, nor does it involve causes and capacities in any simple way (Humphreys 1995). I argue the predictive successes of such methods require (...) us to reanalyze our views about the nature of prediction, the status of models, and the goal(s) of science. When laws and experimental evidence are neither individually nor jointly sufficient for prediction, models become the locus of understanding. I analyze an historically important debate about the use of semi-empirical methods to construct potential energy surfaces. (shrink)

Why do the two sexes have different lifespans and rates of aging? Two hypotheses based on asymmetric inheritance of sex chromosomes (“unguarded X”) or mitochondrial genomes (“mother's curse”) explain sex differences in lifespan as sex‐specific maladaptation leading to increased mortality in the shorter‐lived sex. While asymmetric inheritance hypotheses equate long life with high fitness, considerable empirical evidence suggests that sexes resolve the fundamental tradeoff between reproduction and survival differently resulting in sex‐specific optima for lifespan. However, selection for sex‐specific values in (...) life‐history traits is constrained by intersexual genetic correlations resulting in intra‐locus sexual conflict over optimal lifespan. The available data suggest that the evolution of sexual dimorphism only partially resolves these conflicts. Sexual conflict over optimal trait values, which has been demonstrated in model organisms and in humans, is likely to play a key role in shaping the evolution of lifespan, as well as in maintaining genetic variation for sex‐specific diseases. (shrink)

This study examined the impact of selected personality traits—innovativeness, internal locus of control, need for achievement and propensity to take risks—on the entrepreneurial intention of Saudi students. The study sample included 165 students from an applied college affiliated with King Faisal University. The participants completed an online self-administered questionnaire, the data from which were analyzed using the partial least squares structural equation modeling method. The findings revealed that the characteristics of innovativeness, internal locus of control and propensity to (...) take risks had a positive relationship with entrepreneurial intention. However, the need for achievement had no relationship with entrepreneurial intention. The study model predicted approximately 25% of the total variance in entrepreneurial intention. It is recommended that in future studies, the sample size should be increased and the scope of the study should be broadened. (shrink)

Oncogenic hyperplasia is the first and inevitable stage of formation of a (solid) tumor. This stage is also the core of many other proliferative diseases. The present work proposes the first minimal model that combines homeorhesis with oncogenic hyperplasia where the latter is regarded as a genotoxically activated homeorhetic dysfunction. This dysfunction is specified as the transitions of the fluid of cells from a fluid, homeorhetic state to a solid, hyperplastic-tumor state, and back. The key part of the model is (...) a nonlinear reaction-diffusion equation (RDE) where the biochemical-reaction rate is generalized to the one in the well-known Schlögl physical theory of the non-equilibrium phase transitions. A rigorous analysis of the stability and qualitative aspects of the model, where possible, are presented in detail. This is related to the spatially homogeneous case, i.e. when the above RDE is reduced to a nonlinear ordinary differential equation. The mentioned genotoxic activation is treated as a prevention of the quiescent G0-stage of the cell cycle implemented with the threshold mechanism that employs the critical concentration of the cellular fluid and the nonquiescent-cell-duplication time. The continuous tumor morphogeny is described by a time-space-dependent cellular-fluid concentration. There are no sharp boundaries (i.e. no concentration jumps exist) between the domains of the homeorhesis- and tumor-cell populations. No presumption on the shape of a tumor is used. To estimate a tumor in specific quantities, the model provides the time-dependent tumor locus, volume, and boundary that also points out the tumor shape and size. The above features are indispensable in the quantitative development of antiproliferative drugs or therapies and strategies to prevent oncogenic hyperplasia in cancer and other proliferative diseases. The work proposes an analytical-numerical method for solving the aforementioned RDE. A few topics for future research are suggested. (shrink)

The present issue of Filozofski Vestnik starts from a concatenation – science and thought – that at first sight is the radical opposite to Heidegger’s diagnosis. The title of this issue, “Science and Thought”, already suggests that there is or at least there can be such a relation. With regard to Heidegger, this implies two options here: either Heidegger was wrong in his criticism of metaphysics or he was wrong with his equation of Ge-Stell (as the essence of technology) and (...) science. Simply put: either metaphysics still contains some sort of valuable thought (and hence there could be some sort of metaphysical science that thinks) or science is simply not reducible to the metaphysics or to the being of a mere technology in the sense that Heidegger criticized. Then the (metaphysical) question of being could be separated from technology and metaphysics, but perhaps it still finds its locus rather within science. Heidegger’s claim about metaphysics and technology then would find itself inverted through the suggested relation of science and thought. Such an inversion of Heidegger’s critique of the very status of science is itself conditioned by the recent developments in philosophy that we take as the starting point for the present issue of Filozosfki Vestnik. (shrink)

In lieu of an abstract, here is a brief excerpt of the content:BOOK REVIEWS 545 Congratulations to the publisher must be qualified only with regret that a work so valuable to students should be available only in a hardback edition costing nearly twenty dollars. Wabash College Crawfordsville, Indiana WILLIAM c. PLACHER God, Guilt, and Death: An Existential Phenomenology of Religion. By MEROLD WESTPHAL. Bloomington: Indiana University Press, 1984. Pp. xiv+ 305. $27.50. At each stage of its history existential thought has (...) been deeply engaged with the phenomena of religion. However, the appeal to the existence has produced starkly opposed responses to the question of the significance of religion. The original and most obvious contrast is that between Kierkegaard and his near-conternpomry, Nietzsche. Where the first reflects on the existence of the " single one " as a way of defending religious consciousness against Hegelian rationalism; the latter makes a similar turn to existence (as the will to power of life) precisely in order to " unmask " the " lies " that tempt one to the religious life. Or, more recently, one could contrast the efforts of Marcel and Bultmann, who find in existential thinking the key to a deeper appreciation of traditional religiosity, with the resolutely atheistic project of Sartre, for whom "we are in a situation where there are only human beings," where "even if God existed it wouldn't make any difference." In spite of such controversy over the value of religion, the philosophical approach to religion in terms of existence has had the beneficial effect of shifting the locus of questioning from the cognitive status of religious utterances to the problem of the meaning of the religious life. An existentail approach does not exhaust itself in analyzing the evidential structure of propositions about God, the soul, etc., as though religion were simply a mode of cognition, but rather explores the question of "what it is (means) to be religious." In our own time Paul Ricoeur has taken up this issue in a way that seeks to do justice both to the critical moment in existential thought and to its promise of a deepened religious sensibility. Along with a "hermeneutics of suspicion" (grounded in the works of Marx, Nietzsche, and Freud) Ricoeur calls for a "hermeneutics of recovery " which would reinvest the " symbolism of the sacred " with a depth drawn from consciousness of our existential situation. It is in the horizon of this latter project that we may locate Merold Westphal's sig- 546 BOOK REVIEWS nificant contribution, God, Guilt, and Death: An Existential Phenomenology of Religion. This book, addressed to a general audience of believer and unbeliever alike, has many virtues. While it draws judiciously from the central works of existentialism and phenomenology, as well as from a wide variety of literature on the world's religions. it is written in clear and engaging prose, entirely free from tedious jargon. And while vYestphal's sympathies are clearly with those who find a continued vitality in religious eonsciousness today, his book is written in the spirit of inquiry; it gracefully avoids the twin dangers of polemics and devotionality. He is sensitive to objections without allowing them to paralyze his arguments, and he offers some bold, important generalizations without being blind to the limits of his evidence. Finally, the book contains original phenomenological investigations, striving after eidetic insight through study of personal experience, world literature, and (mostly standard) works on other cultures and their religious life (including Judaism, Christianity, Islam, various forms of Hinduism, Buddhism, and Amerindian religions). Because Westphal draws on such a diversity of materials, there are likely to be many points with which the specialist will take issue. But an ad.equate phenomenology of religion must tackle this diversity, and Westphal has certainly given us one of the most accessible examples of such an enterprise. Westphal's approach to the existential question-What does it mean to be religious ~-is phenomenolog'ical. This means, first, that we are interested in the significance of religion from the descriptive first person perspective of the believing soul. The believing soul (a term borrowed from Ricoeur) is not simply "one who believes or affirms this or that proposition," but one. "who sees things in a certain way" (257). vYe are concerned here with a form... (shrink)

세상에는 대부분 사람들이 믿는 통념이지만 실은 근거 없는 그런 견해도 있다. 우리나라 역사에 대해서도 근거 없이 믿고 있는 잘못된 신념들이 있다. 철학자인 나로서는 그런 신념을 만나면 먼저 개념(용법)분석을 시도한다. 분석 도구는 수학(연립방정식의 결정-과소결정(부정)-과잉결정(불능)), 자연과학(가설연역방법), 논리학(모순관계, 포함관계) 이다. 분석한 개념은 “주(炷: 심지)”와 “산(蒜: 달래)”, 단군의 “수(壽)”, 주몽의 아버지인 “해모수”와 “단군”의 용법, “해모수”의 세 가지 용법, “신기대보(神器大寶)” 등이다. 이 개념들을 분석해 보면 고대 한국 왕들이 장생불사(長生不死)의 철학을 믿었다는 것을 알 수 있다. 역사기록에 등장하는 용어를 그 당대 용법으로 이해하려면 엄격한 학문연구방법이 필요하다. 역사를 (...) 연구할 때 좀 더 치밀한 연구방법을 고민해야 한다. (shrink)