33,732 research outputs found
Book Review: Towards a Practical Guide to the Therapy of the Borderline Patient
EFFECTIVE PSYCHOTHERAPY WITH BORDERLINE PATIENTS:CASE STUDIES
Robert J. Waldinger, M.D .John G. Gunderson, M.D.
New York, Macmillan 1987, 232 page
Editor\u27s Column
An exhibition of paintings of the American Old West caught my attention one afternoon, after I had wandered across the street from our affiliate V.A. outpatient clinic to the Pennsylvania Academy of the Fine Arts. A popular theme among these romanticized views of the American frontier was the image of the trapper; alone, silent figure working at the nation\u27s interface with the unknown. Several paintings depicted a custom known as the rendez-vous, a semi-annual occurrence wherein the trappers gathered eastward to river outposts in order to socialize, trade information and hand-made maps, restock supplies, and display for sale the bounty gleaned from the previous season
Editor\u27s Column
As the Jefferson Journal of Psychiatry continues in its early growth phase, having accomplished a successful synthesis to become a national publication, we note its own apparent power of accommodation equal to the strain of fusing and adjusting internal and external changes.
Psychiatric residency in itself demands such accommodation. A group of finishing second year residents were taking stock of the fir st half of this process: They noted the difficulty in reconciling their initial conceptions and intentions with the subsequent realization of the limits to knowledge or intervention; they called this disillusionment. Others spoke of a converse strengthening as better insight into the range of their abilities made them observe more clearly, act with more leverage. This is also disillusionment in the more positive sense
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Learning From Complexity: Effects Of Prior Accidents And Incidents On Airlines' Learning
Using data on accidents and incidents experienced by U.S. commercial airlines from 1983 to 1997, we investigated variation in firm learning by examining whether firms learn more from errors with heterogeneous or homogeneous causes. We measured learning by a reduction in airline accident and incident rates, while controlling for other factors related to accidents and incidents. Our results show that heterogeneity is generally better for learning, as prior heterogeneity in the causes of errors decreases subsequent accident rates, producing a deeper, broader search for causality than simple explanations like >blame the pilot.> The benefits of heterogeneity, however, apply mainly to specialist airlines. Generalist airlines learn, instead, from outside factors such as the experience of others and general improvements in technology. These results suggest a theory of learning across organizational forms: complex forms benefit from simple information, and simple forms benefit from complex information. The implications of our study for learning theories and work on organizational errors are discussed.Business Administratio
Test evaluation of fuel cell catalysts Quarterly report, Aug. 16 - Nov. 15, 1967
Corrosion testing of nickel, cobalt, nickel cobalt alloy, borides, and other fuel cell catalyst samples for activity in oxidation of hydrazin
Hybrid A/D converter for 200 deg C operation
A 12 bit A/D converter was designed and developed which will operate at 200 C with .05 linearity, 1/accuracy, 350 WSec conversion time, and only 455 mW power consumption. This product also necessitated the development of a unique three metal system in which aluminum wire bonding is done utilizing aluminum bonding pads, gold wire bonding to all gold areas, and employment of a nickel interface between gold and aluminum connections. This system totally eliminates the formation of a intermetallics at the bonding interface which can lead to bond failure. This product represents an advancement in electronics as it proved the operation of integrated circuits at high temperature, as well as providing information about both the electrical and mechanical reliability of hybrid circuits at 200 C
A study of noise metric and tone correction accuracy
Methods currently used to measure human response to aircraft flyover noise were investigated. Response to high level aircraft noise usually experienced outdoors was obtained. Response to aircraft flyover noise typical of indoor exposure was also investigated. It was concluded that current methods for evaluating response to aircraft flyover are more accurate for outdoor noise
Response to actual and simulated recordings of conventional takeoff and landing jet aircraft
Comparability between noise characteristics of synthesized recordings of aircraft in flight and actual recordings were investigated. Although the synthesized recordings were more smoothly time-varying than the actual recordings and the synthesizer could not produce a comb-filter effect that was present in the actual recordings, results supported the conclusion that annoyance response is comparable to the synthesized and actual recordings. A correction for duration markedly improved the validity of engineering calculation procedures designed to measure noise annoyance. Results led to the conclusion that the magnitude estimation psychophysical method was a highly reliable approach for evaluating engineering calculation procedures designed to measure noise annoyance. For repeated presentations of pairs of actual recordings, differences between judgment results for identical signals ranged from 0.0 to 0.5 db
A cryocooler for applications requiring low magnetic and mechanical interference
A very low-power, low-interference Stirling cryocooler is being developed based on principles and techniques described in several previous publications over the last four years. It differs in several important details from those built previously. It uses a tapered displacer based upon an analytical optimization procedure. The displacer is driven by an auxiliary piston and cylinder (rather than by mechanical linkage) using some of the working fluid itself to provide the driving force. This provides smooth, vibration-free motion, and, more importantly, allows complete mechanical and spatial separation of the cryostat from the pressure-wave generator. Either of two different pressure-wave generators can be used. One is a non-contaminating, unlubricated ceramic piston and cylinder. The other is a compressed-air-operated rubber diaphragm with motor-driven valves to cycle the pressure between appropriate limits
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