The influence of the human TMJ eminence inclination on predicted masticatory muscle forces

Aim of this paper was to investigate the change in masticatory muscle forces and temporomandibular joint (TMJ) reaction forces simulated by inverse dynamics when the steepness of the anterior fossa slope was varied. We used the model by de Zee et al. (2007) created in AnyBody™. The model was equipped with 24 musculotendon actuators. Mandibular movement was governed by the trajectory of the incisal point. The TMJ was modelled as a planar constraint canted 5° medially and the caudal inclination relative to the occlusal plane was varied from 10° to 70°. Our models showed that for the two simulated movements (empty chewing and unilateral clenching) the joint reaction forces were smallest for the eminence inclination of 30° and 40° and highest for 70°. The muscle forces were relatively insensitive to change of the eminence inclination for the angles between 20° and 50°. This did not hold for the pterygoid muscle, for which the muscle forces increased continually with increasing fossa inclination. For empty chewing the muscle force reached smaller values than for clenching. During clenching, the muscle forces changed by up to 200 N.     

The Infertility Resilience Model: Assessing Individual,Couple, and External Predictive Factors

Resilience in couples experiencing infertility is critical to decrease the impact of infertility-related stress and sustain positive interactions and collective perceptions in couples. The Infertility Resilience Model (IRM) presented in this article provides a framework within which various individual, couple, and external factors that influence resilience can be understood. Although numerous approaches have been applied to infertility, few of them have examined resilience and the interconnections between individual, couple, and external influences. The concepts and connections within the model can be used by clinicians for assessment and interventions when working with couples facing infertility.     

The structure of tradeoffs in model building

Despite their best efforts, scientists may be unable to construct models that simultaneously exemplify every theoretical virtue. One explanation for this is the existence of tradeoffs: relationships of attenuation that constrain the extent to which models can have such desirable qualities. In this paper, we characterize three types of tradeoffs theorists may confront. These characterizations are then used to examine the relationships between parameter precision and two types of generality. We show that several of these relationships exhibit tradeoffs and discuss what consequences those tradeoffs have for theoretical practice. John Matthewson and Michael Weisberg have contributed equally to this paper.     

Toleration and Neutrality: Incompatible Ideals?

Toleration and neutrality are not always distinguished. When they are, they are often offered as two complementary solutions for the problem of achieving political unity and a degree of mutual acceptance within a pluralist liberal polity. The essay shows the concepts to be fundamentally distinct, and then argues that instead of being mutually supporting, they are mutually exclusive. Neutralist liberals, it is argued, must give up toleration in favour of the virtue of neutrality on the part of citizens. This revised version was published online in August 2006 with corrections to the Cover Date.     

The end of theoretical orientations?

Theoretical orientation is the most pervasive organizing device in psychology. Ideas, books, people, therapies, and other salient matters are frequently classified into psychodynamic, behavioral, humanistic, cognitive, or other orientation categories. The continued prominence of theoretical-orientation classification belies a breakdown in its applicability to contemporary psychology. Psychotherapy remains a stronghold. However, with internal and external forces endorsing particular approaches, theoretically-based practices will be forced to yield to evidence-based ones. The final dismantling of traditional theoretical categories by evidence-based practice standards paradoxically provides a hopeful impetus to otherwise arrested theoretical development. Manifest avowed theoretical orientation is distinguished from a latent theoretical-orientation construct, and the ways a new kind of meta-theory of therapy will reduce the naivete and increase the applicability of clinical research is discussed.     

儒家伦理讨论中的六大概念问题

关于儒家伦理问题的讨论一直是中国哲学史界与伦理学界的一个热门话题,许多学者都抱着真挚的热情与善良的意愿努力开掘儒家传统伦理思想中的精微意蕴,并力图为现实生活与社会提供某种可资借鉴的范本。应当说其中的不少工作都有着深刻的理论价值和一定的现实意义,但也不能不看到,在讨论中有不少关涉核心问题的概念显得比较模糊甚或混乱,主要有伦理与德性、实践与思想、当然与可能、大众与精英、他律与自律、早期(先秦)儒家与后期(宋明)儒家等。对这些不同的概念做一辨析和梳理,将有利于关于儒家伦理问题的讨论在更深入和更精确的层面上进行。     

The A Posteriori Armchair

A lot of good philosophy is done in the armchair, but is nevertheless a posteriori. This paper clarifies and then defends that claim. Among the a posteriori activities done in the armchair are assembling and evaluating commonplaces; formulating theoretical alternatives; and integrating well-known past a posteriori discoveries. The activity that receives the most discussion, however, is the application of theoretical virtues to choose philosophical theories: the paper argues that much of this is properly seen as a posteriori.     

FORMATION,GRACE, AND PNEUMATOLOGY: Or,Where's the Spirit in Gregory's Augustine?

Eric Gregory's Politics and the Order of Love takes up an audacious project: enlisting Saint Augustine in order to “help imagine a better liberalism.” This article first provides a summary of Gregory's argument, focusing on his emphasis on love as a “motivation” for neighborly care, and hence democratic participation. This involves tracing the theme of motivation in the book, which is tied to his articulation of liberal perfectionism and an emphasis on civic virtue. In conclusion I raise the question of whether his project has ignored a key aspect of Augustine's account of love, namely, the role of the Holy Spirit, thereby demarcating the limits of Gregory's “rational reconstruction” of Augustine.     

Can Character Traits Be Based on Brute Psychological Facts?

Some of our largely unchosen first‐order reactions, such as disgust, can underwrite morally‐laden character traits. This observation is in tension with the plausible idea that virtues and vices are based on reasons. I propose a way to resolve the tension.     

From Posttrauma to Gender and Back: A Gender Motivation Theory-Explanation of Gender Differences in Trauma Exposure,Symptoms, Diagnosis,and Implications

This article proposes the “gender motivation theory” as a potential starting point for the study of gender differences in posttraumatic stress disorder (PTSD). Grounded in evolutionary and sociological theories, the gender motivational theory argues that men are generally motivated by status enhancement, whereas women are motivated by risk reduction. Accordingly, the theory considers these differing motivations as the core factor differentiating men and women in challenging situations regarding their perception, meaning, experience, and behavior. The theory refers to PTSD as a subjectively perceived failure fulfilling gender motives. Applying this theory to trauma victims enables expanding and increasing gender sensibility for an understanding of PTSD and its various consequences. It also allows a broader and deeper understanding of gender beyond normative boundaries. The article examines the validity of the gender motivation theory in view of the cumulative empirical evidence of gender differences in the study of PTSD as well as other fields of knowledge. Additionally, the proposed theory offers a coherent perspective and guidelines for further examination and practical applications in PTSD research.