scholarly journals Linearized supersonic aerofoil theory part II

The operational approach to linearized supersonic aerofoil problems is further developed. In particular, the method is extended to give a general treatment of the drag on swept-back wings at zero incidence. Problems involving the lift on swept-back wings are also considered, and a recurrence method developed for obtaining the lift on a trapezoidal wing with tips swept back beyond the Mach angle. As a particular case this latter method is applied to the arrow-head wing.

1983 ◽  
Vol 22 (02) ◽  
pp. 77-82 ◽  
Author(s):  
M. P. Mi ◽  
J. T. Kagawa ◽  
M. E. Earle

An operational approach to computerized record linkage has been developed based on the concept of probability of chance match in two groups of records brought together for comparison. Tolerance levels can be readily derived from these records for decision-making in accepting or rejecting a linked pair. This approach is especially suitable for iteration when linked pairs are removed in successive cycles. An application of linkage for death clearance of the 1942 resident population of 437,967 registered in Hawaii during a 38-year period from 1942 to 1979 is presented. The reliability of linkage and rate of failure were analyzed.


Land ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 797
Author(s):  
Malcolm Childress ◽  
Selina Carter ◽  
Edgard Barki

This paper aims to analyze the financial and operational approach to land regularization and financing used in Brazil by an innovative private social enterprise in order to demonstrate that the approach widens the concept fit-for-purpose land regularization to include fit-for-purpose land financing, with relevance for wider efforts in informal settlement regularization and upgrading. In this approach, the enterprise acts as a coordinator and broker to organize the residents of informal settlements to regularize their settlements by negotiating buyouts of the underlying private owners at discounted values, handling titling and registration of the occupants, and coordinating with municipal governments to provide infrastructure. The analysis of parcel-level repayment and price data provides evidence of the sustainability of the business model and increase of property values of the regularized parcels. The results presented from the enterprise’s own repayment data demonstrate that under (non-pandemic) historical conditions residents are largely able to pay an affordable monthly payment over 7–10 years to the enterprise for the service to purchase the plots and maintain the enterprise. In operation since 2001, the enterprise has regularized over 20,000 parcels in more than 30 settlements, primarily in the cities of Sao Paolo and Curitiba in Brazil. The approach suggests that it could be widely replicable and add to the set of options for regularizing informal settlements, especially when purchase of private land is required.


1971 ◽  
Vol 61 (6) ◽  
pp. 773 ◽  
Author(s):  
R. M. A. Azzam ◽  
N. M. Bashara
Keyword(s):  

2007 ◽  
Vol 22 (6) ◽  
pp. 258-263 ◽  
Author(s):  
B B Lee ◽  
J Laredo ◽  
Y W Kim ◽  
R Neville

The era where surgical excision alone was the sole treatment of venous malformation (VM) is now over. A multidisciplinary approach that utilizes both traditional surgical therapy and endovascular therapy is now the standard of care. Endovascular therapy utilizing primarily both embolization therapy and sclerotherapy is the treatment of choice for surgically ‘inaccessible' VM lesions. Surgical therapy of VM lesions has been shown to be more effective when combined with supplemental endovascular therapy.


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