A variable-threshold,variable-gain,infrared photoplethysmograph

The design of a versatile, low-cost, hermetically sealed, infrared photoplethysmograph is described. The device can be used for optical readings of changes in blood volume which occur with cardiovascular events. Advantages of the device are discussed.     

Religion,Type A behavior,and health

In a study of air traffic controllers, religious differences are found in the way Type A behavior is associated with several health status indicators. Associations between the Jenkins Activity Survey (JAS) and physical illness incidence, health-promotive behavior, diastolic and systolic blood pressure, subjective distress and impulse control problems, and alcohol consumption are examined by religious attendance, religious affiliation, and change in affiliation. Findings confirm that Type A does not vary significantly by religion. However, there are several significant findings between Type A and various health indicators. Type A is associated with illness incidence, overall and more strongly in several religion, subgroups. Type A and alcohol consumption are related positively in Protestants and converts, and negatively in churchgoing Catholics. Type A is related to impulse control problems in churchgoing Protestants and to subjective distress in churchgoing Catholics. Finally, in individuals with weak or no religious ties, Type A is associated with lower blood pressure. This last finding suggests that in some people (for example, the irreligious or unchurched), the coronary-prone behavior pattern may have cardiovascular effects which are salutary in at least one respect.The authors wish to thank Dr. Kyriakos S. Markides and Laura A. Ray for their assistance with this study. Address requests for reprints to Dr. Levin at the Institute of Gerontology, 300 North Ingalls, Ann Arbor, MI 48109.     

Meaning,Understanding, and A Priori Knowledge

Philosophia - According to the most popular account of the a priori, which we might call Analytic Account of the A Priori, we can explain the a priori in terms of the notion of analyticity....     

Ontology, Understanding, and the A Priori

How might one explain the reliability of one's a priori beliefs? What if anything is implied about the ontology of a certain realm of knowledge by the possibility of explaining one's reliability about that realm? Very little, or so it is argued here.     

DESIGNING, PLANNING, AND SELLING PROJECT A

Because of its size and its focus on an entire personnel system, Project A represents an unusual chapter in the support of personnel research and development (R & D) by a funding agency. This paper describes the events that led up to the decision to create such a Request for Proposals (RFP), and the conditions that made it possible. The conditions that seem necessary to maintain such a project over the course of its life cycle are also discussed.     

一座教堂 一段历史——安徽芜湖圣若瑟天主堂

<正>芜湖地处安徽东南,西临长江,南枕青弋江,是一座水运发达、地理位置优越的滨江山水园林城市。在这座美丽的小城里,矗立着一座罗马风格的天     

An Odyssey: A Father,A Son and An Epic,by Daniel Mendelsohn,William Collins,London, 2017, 305pp.

The American Journal of Psychoanalysis -