Track-draw: A graphical interface for controlling the parameters of a speech synthesizer

In this report we describe a graphical interface for generating voiced speech using a frequency-domain implementation of the Klatt (1980) cascade formant synthesizer. The input to the synthesizer is a set of parameter vectors, calledtracks, which specify the overall amplitude, fundamental frequency, formant frequencies, and formant bandwidths at specified time intervals. Tracks are drawn with the aid of a computer mouse that can be used either inpoint-draw mode, which selects a parameter value for a single time frame, or inline-draw mode, which uses piecewise linear interpolation to connect two user-selected endpoints. Three versions of the program are described: (1) SYNTH draws tracks on an empty time-frequency grid, (2) SPECSYNTH creates a spectrogram of a recorded signal upon which tracks can be superimposed, and (3) SWSYNTH is similar to SPECSYNTH, except that it generatessine-wave speech (Remez, Rubin, Pisoni, & Carrell, 1981) using a set of time-varying sinusoids rather than cascaded formants. The program is written for MATLAB, an interactive computing environment for matrix computation. Track-Draw provides a useful tool for investigating the perceptually salient properties of voiced speech and other sounds.     

Libertarian Free Will and the Physical Indeterminism Luck Objection

Libertarian free will is, roughly, the view that agents (or, agent-involving events) cause actions to occur or not occur: Maddy’s decision to get a beer causes her to get up off her comfortable couch to get a beer, though she almost chose not to get up. Libertarian free will notoriously faces the luck objection, according to which agential states do not determine whether an action occurs or not, so it is beyond the control of the agent, hence lucky, whether an action occurs or not: Maddy’s reasons for getting beer in equipoise with her reasons to remain in her comfortable seat do not determine that she will get up or stay seated, so it seems beyond her control, hence lucky, that she gets up. In this paper I consider a sub-set of the luck objection called the Physical Indeterminism Luck Objection, according to which indeterministic physical processes cause actions to occur or not, and agent’s lack control over these indeterministic physical processes, so agent’s lack control over, hence it is lucky, whether action occurs or not. After motivating the physical indeterminism luck objection, I consider responses from three recent event-causal libertarian models, and conclude that they fail to overcome the problem, though one promising avenue is opened up.

This paper is divided into six parts. In Section One, I minimally define libertarian free will as accepting agential indeterminism, which is the conjunction of indeterminism and agential causation, where agential indeterminism occurs when an agent’s reasons, efforts or character indeterministically cause actions. In Sections Two and Three I outline the physical indeterminism luck objection to libertarian free will, which states that sub-agential physical processes in the brain indeterministically cause actions to occur, and agents lack control over these indeterministic physical causes, so agent’s lack control over whether their actions occur. If agent’s lack control over whether actions occur, the occurrence of these actions is lucky, where this luck jeopardizes free will and moral responsibility. In Sections Four through Six I consider three recent libertarian responses to this objection—Mark Balaguer in Section Four, Chris Franklin in Section Five, and Robert Kane in Section Six. I conclude that none of these models satisfactorily overcomes the physical indeterminism luck objection, though one interpretation of Kane yields a promising avenue of reply.

     

Ethics, biotechnology, and global health: the development of vaccines in transgenic plants

As compared with conventional vaccine production systems, plant-made vaccines (PMVs) are said to enjoy a range of advantages including cost of production and ease of storage for distribution in developing countries. In this article, we introduce the science of PMV production, and address ethical issues associated with development and clinical testing of PMVs within three interrelated domains: PMVs as transgenic plants; PMVs as clinical research materials; and PMVs as agents of global health. We present three conclusions: first, while many of the ethical issues raised by PMVs are familiar, PMVs add a new dimension to old issues, and raise some novel issues for ethicists and policy-makers; secondly, it is premature to promise broad applicability of PMVs across the developing world without having demonstrated their feasibility; thirdly, in particular, proponents of PMVs as a solution to global health problems must, as a condition of the ethical conduct of their research, define the commercial feasibility of PMVs for distribution in the developing world.     

The pornography/aggression linkage: Results from a field study

Renewed concern over the possible effects of pornography has been sparked by a “new” body of research. Foremost among these concerns is the possibility of a linkage between viewing pornography and subsequent aggressive behavior, especially toward women. However, the vast majority of this research is limited to laboratory settings. This study reports on a field experiment which assesses the impact of presenting a pornographic movie on a college campus. A longitudinal, self‐report study of 230 women students was conducted to determine any effects of the film's showing on the sample's experiences with aggression from males. Compared with the weeks prior to and following the movie's showing, no significant difference in reported aggression was found. Further, those women reporting association with males attending the movie reported no significantly different levels of experienced aggression from those women whose companions did not view the film. Reasons for the apparent lack of effect are discussed in light of the laboratory‐based literature.     

Polarity and Inseparability: The Foundation of the Apodictic Portion of Aristotle's Modal Logic

Modern logicians have sought to unlock the modal secrets of Aristotle's Syllogistic by assuming a version of essentialism and treating it as a primitive within the semantics. These attempts ultimately distort Aristotle's ontology. None of these approaches make full use of tests found throughout Aristotle's corpus and ancient Greek philosophy. I base a system on Aristotle's tests for things that can never combine (polarity) and things that can never separate (inseparability). The resulting system not only reproduces Aristotle's recorded results for the apodictic syllogistic in the Prior Analytics but it also generates rather than assumes Aristotle's distinctions among ‘necessary’, ‘essential’ and ‘accidental’. By developing a system around tests that are in Aristotle and basic to ancient Greek philosophy, the system is linked to a history of practices, providing a platform for future work on the origins of logic.     

The existential assumptions of traditional logic

There have been and continue to be disagreements about how to consider the traditional square of opposition and the traditional inferences of obversion, conversion, contraposition and inversion from the perspective of contemporary quantificational logic. Philosophers have made many different attempts to save traditional inferences that are invalid when they involve empty classes. I survey some of these attempts and argue that the only satisfactory way of saving all the traditional inferences is to make the existential assumption that both the subject and predicate classes and their complement classes are non-empty for all the propositions we admit. I briefly indicate the room for continued controversy over how properly to interpret Aristotle’s statements regarding these inferences, but find some plausibility in the views of Manley Thompson and A.N.Prior that Aristotle had in mind a particular arrangement of existential import unfamiliar to most contemporary logicians     

Psychometric Properties and Factorial Structure of the State Trait Anxiety Inventory-Trait Version (STAI-T) in Caribbean University Students

The study investigated the psychometric properties of the State Trait Anxiety Inventory—Trait Scale (STAI-T: Spielberger, 1983) in a Caribbean university student sample. Participants were 415 undergraduate students (75% female) who completed the State-Trait Anxiety Inventory-Trait Version (STAI-T; Spielberger, 1983), Beck Depression Inventory-II (BDI-II; Beck, Steer, & Brown, 1996), the Zung Self-Rating Depression Scale (SDS; Zung, 1965), the Ego Resiliecy-89 (ER-89; Block, 1989), and the Perceived Stress Scale-Ten Item Version (PSS-10; Cohen et al., 1983). Confirmatory factor analysis (CFA) was conducted to examine the construct validity of the trait anxiety scale in terms of factor structure, convergent, discriminant, and nomological validities. CFA results revealed that a two-factor solution (trait anxiety absent and trait anxiety present) provided significantly better fit than the one-factor model of trait anxiety. There was clear evidence of convergent validity, discriminant validity, and nomological validity of the scale. Results support the psychometric adequacy of the STAI-T for use with Caribbean university students.     

The Effect of Organizational Justice on Contextual Performance,Counterproductive Work Behaviors,and Task Performance: Investigating the moderating role of ability‐based emotional intelligence

This study tested the direct effects of three dimensions of organizational justice – distributive justice, procedural justice, and interactional justice – on contextual performance, counterproductive work behaviors, and task performance. The study also examined the moderating effects of an ability measure of emotional intelligence (EI) on the justice–performance relationship. Based on the data from 211 employees across nine organizations from the private and public sectors in a developing country in the Caribbean, the results revealed that all three justice dimensions had significant effects on task performance, contextual performance, and counterproductive work behaviors in the expected direction. Composite EI and its four subdimensions (appraisal and expression of emotion in the self, appraisal and recognition of emotion in others, regulation of emotion, and use of emotion) moderated the relationship between procedural justice and contextual performance, but failed to moderate other justice–performance relationships.     

An Empirical Study of Future Professionals’ Intentions to Engage in Unethical Business Practices

This paper sought to test whether student demographics (gender, age, religion, type of degree and number of courses done containing ethics) influenced the likelihood of engaging in unethical business practices. The study involved the use of a questionnaire being administered to a sample of 231 undergraduate students in Barbados. It was found that gender, religiousness, type of degree and number of courses taken containing ethics significantly impacted on the intentions to engage in unethical behaviour. It was also found that the impact of age was not conclusive. The study has several limitations including low generalisability due to the use of a non-probability sampling method, and the possibility of social desirability bias. The study informs educators about the need to integrate ethics into the curriculum as an essential component of professional training for future managers and business people. This study makes an important contribution to the ethics literature on small island developing states, since the study was done in the country of Barbados.     

ADMINISTRATION EFFECTS ON THE S-329 OF THE GATB USING THREE EXPERIMENTAL TREATMENTS

Does the administrator of a test have an effect on the results of a group taking a test? If so, does a warm positive administrator have a different effect than a cold aloof examiner? Is there a difference in the effect of a male and female administrator? These are the questions that this study was designed to investigate. One hundred forty females 22 years or over taking the clerical battery of the GATB as part of a civil service examination were randomly assigned to one of three test administrators: (1) a warm, positive administrator, (2) a neutral administrator and (3) a negative, aloof and unhelpful administrator. One male and one female employed each of the experimental treatments resulting in six treatment groups. Findings: (1) Subjects taking the test administered by males did not achieve significantly different scores from those taking the test administered by females; (2) Warm positive administrator behavior produced significantly higher scores than negative administrator behavior; (3) Neutral administrator behavior produced significantly higher scores than negative administrator behavior; (4) Neutral and positive administrator behaviors were on the average equally effective in promoting high scores.