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排序方式: 共有253条查询结果,搜索用时 15 毫秒
21.
This introduction to the series of surveys on psychologist reactions to managed care presents an overview of the topics, findings, and conclusions of these surveys done through the American Psychological Association's Practice Directorate, Division 42, and the New Jersey Psychological Association. The results of these studies give a meaningful base for references to psychologist attitudes and reactions to the force of managed care on the profession. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
22.
RM Cardinale RK Schmidt-Ullrich SH Benedict RD Zwicker DC Han WC Broaddus 《Canadian Metallurgical Quarterly》1998,6(4):175-181
Parvovirus B19 (PV B19) infection was investigated in 29 pregnant women with fetal hydrops, after exclusion of feto-maternal incompatibility within red blood cell antigens, TORCH infections, feto-maternal hemorrhage and genetics reasons. The active viral infection was detected in 9 women (31%) by PCR amplification of DNA B19; in 2 of them IgM and IgG, in 1 IgM and in 4 IgG antibodies were also present. In 6 women (20%) IgG antibodies were only found, but not IgM and DNA B19, which confirmed infection in the past. In addition in 9 cases DNA B19 was evaluated in the fetal blood. The results in the mothers and their fetuses were concordant (4 positive, 5 negative). Our conclusion is that in nonimmune hydrops fetalis, PV B19 infection should be based on the viral DNA evaluation in the blood of mother (or fetus). IgM antibodies, in time of fetal disorders, might not be detected. 相似文献
23.
Black C.T. Guarini K.W. Ying Zhang Hyungjun Kim Benedict J. Sikorski E. Babich I.V. Milkove K.R. 《Electron Device Letters, IEEE》2004,25(9):622-624
We combine nanometer-scale polymer self assembly with advanced semiconductor microfabrication to produce metal-oxide-semiconductor (MOS) capacitors with accumulation capacitance more than 400% higher than planar devices of the same lateral area. The self assembly technique achieves this degree of enhancement using only standard processing techniques, thereby obviating additional process complexity. These devices are suitable for use as on-chip power supply decoupling capacitors, particularly in high-performance silicon-on-insulator technology. 相似文献
24.
In this study, symptom (item) level data were used to perform a psychometric analysis of the DSM-III-R personality disorders (PDs). Determined for each PD criteria set were convergent validity, discriminant validity, and internal consistency. The results indicated that the majority of the PD criteria sets (6 of the 11 ) possessed adequate convergent validity, although discriminant validity was problematic for most of these disorders. Internal consistency was also weak for the PD criteria sets, with only 3 of the 11 exceeding a minimum cutoff score of .70. The present study employed a methodology modeled after the one reported by Morey (1988a), and the results of the two studies were highly similar. Consistent findings across the two data sets can be taken to reflect the actual psychometric properties of the DSM-III-R PDs. The success of our replication demonstrates the potential that large-scale psychometric investigations hold for aiding the development and refinement of the DSM PDs. 相似文献
25.
Benedict Ralph H.; Schretlen David; Bobholz Julie H. 《Canadian Metallurgical Quarterly》1992,4(3):322
Several investigators have proposed short forms of the Wechsler Adult Intelligence Scale—Revised (WAIS—R) to provide more cost-effective estimates of intellectual ability. The present study compared the concurrent validity of A. B. Silverstein's (1982) 2-subtest, Doppelt's (1956) 4-subtest, and L. C. Ward's (1990) 7-subtest short forms in predicting the WAIS—R Full Scale IQs of 304 psychiatric inpatients. Although Full Scale IQs were highly correlated with 2- and 4-subtest estimates, a significantly higher correlation was obtained with the 7-subtest short form. Errors in predicted IQ were smallest for the 7-subtest form. The results support previous research that found better predictive accuracy for the 7-subtest short form than for the 2- and 4-subtest methods, despite little additional cost in administration time. (PsycINFO Database Record (c) 2010 APA, all rights reserved) 相似文献
26.
27.
The preferred therapy for genuine stress incontinence is surgery. The Burch procedure is considered by many to be the gold standard for surgical treatment of genuine stress incontinence. The Burch procedure requires the elevation of the anterior wall of the vagina to the level of the origin of the paravaginal fascia by suspension from Cooper's ligaments. The laparoscopic performance of the Burch procedure by suturing or by endoscopic stapler mesh technique results in a decrease in the length of hospital stay, faster recovery, much shorter catheterization and less scarring due to the smaller incisions. The laparoscopic procedure provides results similar to the open operation if a meticulous technique is used. Long-term follow-up will be necessary before these procedures can be generally offered as a therapeutic alternative. 相似文献
28.
JH Kramer DC Delis E Kaplan L O''Donnell A Prifitera 《Canadian Metallurgical Quarterly》1997,11(4):577-584
OBJECTIVE: To examine the health insurance experience and out-of-pocket health care costs of families with a child with IDDM. RESEARCH DESIGN AND METHODS: A case-control study of 197 families with a child with IDDM and 142 control families with no diabetic children was conducted. IDDM-affected families were identified from the Allegheny County IDDM Registry. Brothers and sisters of the parents in the IDDM-affected families were asked to participate as control subjects. Health insurance coverage and the money that families spent on health care services and supplies not reimbursed by insurance (out-of-pocket costs) were assessed by questionnaire. RESULTS: No difference was found between the IDDM-affected and control families in the percentages with or without insurance. Families with low household incomes ($10,000-$19,999) were at the greatest risk for having no insurance. While coverage provided by private plans was similar between the IDDM-affected and control families, many families had no reimbursement for insulin (10%), syringes (10%), or blood testing strips (30%). Out-of-pocket expenses were 56% higher in the IDDM-affected families than in the control families. Seventeen percent of the IDDM-affected families had expenses over 10% of their household income. This particularly affected families with low household incomes. Pre-existing illness clauses and insurance denial affected only a small proportion of the case families. CONCLUSIONS: These data illustrate that most families with a child with IDDM have health insurance, yet still incur larger out-of-pocket health care costs than do families without the presence of diabetes. IDDM-affected families likely face a number of economic decisions regarding health insurance and the use of health care. 相似文献
29.
Weinstein Herbert Fu Benedict S. Acosta Raul Bernstein Barry Shaffer Aaron B. 《IEEE transactions on bio-medical engineering》1973,(4):269-277
A method is developed for analyzing sudden injection dye (tracer) curves in order to obtain the distribution of first passage times in the mammalian circulation. The moments of the distribution yield useful quantities such as circulating blood volume. The method involves the use of Liouville-Neumann series. The calculation of the first passage time distribution (FPD) also requires a deconvolution through the use of Fourier transforms, but the calculation of moments does not. 相似文献
30.
The problem of designing broadband linear arrays of omnidirectional sensors is addressed. Attention is restricted to the case of shaded delay-and-sum beamforming. Broadbanding is here defined to mean that the beam-pattern function has little or no frequency dependence of peak response, main-lobe width, plateau sidelobe level, and sinespace separation between the main lobe and the plateau sidelobe. The asymptotic theory of unequally spaced arrays is used to derive relationships between beam-pattern properties and array properties. These relationships are used to translate beam-pattern requirements into functional requirements on sensor spacings and amplitude shadings. The functional requirements are then used to derive a broadband array design. In addition to the design equations, the asymptotic theory is used to derive equations for main-lobe level, sidelobe level, beamwidth, and signal-to-noise ratio (SNR) gain in isotropic noise. A specific example is presented to clarify the concepts and verify that the design procedure actually works 相似文献