Achromatic transparency and the role of local contours

In this paper we investigate the role of contours and junctions in the perception of single-plane achromatic transparency. In order to measure the accuracy with which observers encode transparency, a six-luminance stimulus was employed in which the figural properties could be easily manipulated. Accuracy was measured by requiring subjects to select (either by the method of adjustment or by using a forced-choice procedure) the luminance that best completed a simulated transparent filter. The X junctions in the stimulus were destroyed or perturbed in three experiments. Simple occlusion of the junction (experiment 1), and perturbation of the orientation of the contours of the filter as they pass through the junction (experiment 3) resulted in small but significant reductions in performance. On the other hand, a sudden change in orientation of the background (material) contours (experiment 2) resulted in a small but significant enhancement of overall performance compared with the control stimulus. In the forced-choice task, reversals in the polarity of contours (as defined by the brightness order of flanking regions) around the junction were shown to effect large changes in subjects' accuracy in processing transparency. The overall results show that X and Psi junctions are indeed salient properties of transparent stimuli. The findings suggest that jagged contours with sudden changes in direction are more likely to be attributed to reflectance (material) changes than to changes due to a transparent filter (or to illumination).     

The effects of adenosine receptor agonists and antagonists on morphine state-dependent memory of passive avoidance

Pretraining administration of morphine (5 mg/kg, intraperitonically) in a step-down passive avoidance task led to state-dependent learning with impaired retrieval on the test day that was dose-dependently restored by pretest administration of morphine (0.5, 1, 3, and 5 mg/kg). This restoration was reversible by pretest naloxone administration. Pretest administration of adenosine receptor antagonists theophylline or 8-phenyltheophylline (8-PT) did not alter morphine-induced amnesia. However, both the antagonists inhibited the restoration of memory by pretest morphine (5 mg/kg). Adenosine A(1) receptor agonists N(6)-cyclohexyladenosine (CHA) or N(6)-phenylisopropyladenosine (R-PIA) only at the higher doses used, and adenosine A(2) receptor agonist 5'-N-ethylcarboxaminoadenosine (NECA), at all doses used, decreased morphine-induced amnesia in a dose-dependent manner. Pretest administration of low doses of CHA, R-PIA, or NECA significantly showed additive effects with low dose pretest morphine (1 mg/kg) in restoring memory. The promnestic effects of high-dose CHA and R-PIA were inhibited by theophylline or 8-PT but not by naloxone. The additive effects of low-dose CHA or R-PIA and morphine were inhibited by theophylline, 8-PT, or a higher dose of naloxone. The promnestic effect of NECA and its additive effect with low-dose morphine were both inhibited by theophylline and naloxone but not by 8-PT. It is concluded that activation of the adenosinergic system, through both A(1) and A(2) receptors, can reverse morphine-induced amnesia and is involved in morphine state of memory.     

Justifying political decisions through theological arguments

The relationship between religion and politics in Muslim contexts has been discussed from many different perspectives. One of these proceeds from the theory of religious politics, according to which political thoughts and decisions are justified and legitimated with the support of theological explanations. A central premise is that religion is able to provide a moral sanction for political actions and decisions. This article discusses the relationship between religion and politics in a Shiite context in pre-modern and early modern times, based on the theory of religious politics. The central point is that the Shiite scholars, during the Safavid era (1501–1736), based their secular viewpoints on interpretations of the Quran, the hadiths, and the 12 Imamite Shiite sources, especially the specific ideas about the hidden imam, to legitimate their own collaboration with the Safavid kings. According to this theory, the religious politics occur within an ideological context such as a nation-state and specific historical circumstances. The religious legitimizations of political actions are usually intertwined with local and historical identities. As such the religious ideologies reflect not a return to tradition per se, but rather an ideological reconstruction of tradition for a new context. The ultimate question is which came first? Did the theological interpretations precede secular and political decisions, or was it the other way around? The theory of religious politics arrives at the conclusion that the theological explanations are employed to legitimate traditions of political thought and secular decisions and not the reverse.     

On the Origin of the Concept of “Deviant Subculture” in Criminology: W. I. Thomas and the Chicago School of Sociology

“Deviant subculture” has been a key concept in sociology of deviance and crime for a long time. It has often been argued that Albert K. Cohen was the person who first developed the concept. However, this article argues that the concept first emerged in the work of the Chicago School of Sociology and that W. I. Thomas’ notion of “the definition of the situation” was at the core of it. The notion allowed Thomas to redefine the problem of deviance and crime from one caused by psychological and physiological defects to one caused by normative disorganization.     

TECHNOLOGY AND MUSLIMS: A FIELD STUDY OF IRANIAN SCHOLARS

Muslim scholars have had different approaches toward modern technologies. Defining the situation in various Islamic countries is dependent on knowing the approaches adopted by their scholars. These approaches create norms which can shed light on the reasons for the success and failure of access to technology and its transference. The present article sets out to analyze the views of the Qom seminary scholars in Iran about the development of modern technologies within the framework of the development sociology using the qualitative methodology of grounded theory. To this end, such techniques as conducting interviews and investigating documents have been used to gather the data. The authors find four paradigm models regarding modern technologies among the Qom seminary scholars. These models are classified into two general categories: optimistic and pessimistic. In the end, an “appropriate technology” approach is introduced as an approach singled out by the researchers.     

Can Video Self-Modeling Improve Affected Limb Reach and Grasp Ability in Stroke Patients?

The authors examined whether feedforward video self-modeling (FF VSM) would improve control over the affected limb, movement self-confidence, movement self-consciousness, and well-being in 18 stroke survivors. Participants completed a cup transport task and 2 questionnaires related to psychological processes pre- and postintervention. Pretest video footage of the unaffected limb performing the task was edited to create a best-of or mirror-reversed training DVD, creating the illusion that patients were performing proficiently with the affected limb. The training yielded significant improvements for the forward movement of the affected limb compared to the unaffected limb. Significant improvements were also seen in movement self-confidence, movement self-consciousness, and well-being. FF VSM appears to be a viable way to improve motor ability in populations with movement disorders.     

Religiosity,Gender, and Natural Disasters: A Qualitative Study of Disaster-Stricken Regions in Iran

While religiosity is emerging as one of the more important subjects in disaster management, identifying gender differences in using religion as a coping method has attracted very little attention. The aim of this study was to explore the effects of religiosity on disaster-affected women and men in the setting of Iran. A field-based investigation using a qualitative approach was carried out to achieve the study’s purpose. Data were collected using in-depth unstructured interviews with 25 participants who had been damaged by recent disasters. Two themes, negative and positive effects of religiosity, and five categories were extracted from the data. Women may be influenced by religion more than men, and thus, they can play key roles in strengthening the positive effects of religiosity.