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1 The aim of the present work is to assess similarities between papers used in a collection of 215 lithographs by Henri Matisse. It combines the use of an anisotropic multiscale analysis built upon the hyperbolic wavelet transform to compute distances between textures, with the fact that four textures of the same print were digitized, corresponding to four different (recto/verso and top/side) views. A permutation algorithm is devised showing the importance of reordering the four views to achieve a meaningful comparison across the papers, thus suggesting possibly different artistic intentions in some prints.

Summary Background: While extensive data support the clinical benefit and cost-effectiveness of routine thromboprophylaxis in surgical patients, the use of this approach in medical patients has been controversial. However, recent data, mainly from the MEDENOX trial, support routine thromboprophylaxis in acutely ill medical patients. Aim: To determine attitudes towards VTE prevention in such patients, in departments of internal medicine in Israel. Design: Questionnaire-based survey. Methods: A questionnaire regarding aspects of VTE prophylaxis was mailed to all heads of internal medicine departments in Israel (n ¼ 90). The questionnaire also included data concerning VTE prevention measures in specific acute medical illnesses, based on the MEDENOX study population. Results: Fifty-eight (64%) departments returned the questionnaire. Forty-seven (81%) of them considered VTE a clinical problem in their departments, but only 37 (63%) had a routine VTE prevention policy. The most frequently used modality for VTE prophylaxis was low-molecular-weight heparin. There was little agreement concerning the exact indications or risk factors in which VTE prophylaxis measures should be used, except the combination of acute medical disabling illness and previous VTE. Discussion: The results emphasize the need for detailed guidelines and risk assessment models for VTE prevention treatments in acutely ill medical patients, as well as better education for physicians.

Menorrhagia in adolescents may be the presenting sign of a systemic hemostatic disorder. The evaluation of adolescents with menorrhagia should include an assessment of the pelvic organs to exclude anatomic pathology, and if none is found the possibility of primary hematological abnormality should be considered. Initially, a thorough personal and family history of a bleeding tendency should be obtained. Thereafter, we suggest a number of basic "screening" clotting assays be performed. These should include a platelet count, prothrombin time, activated partial thromboplastin time, fibrinogen level and bleeding time. Abnormalities of any of these tests should then be further investigated using more specific clotting assays. The most common disorders reported to cause menorrhagia in adolescents are von Willebrand's disease, factor XI deficiency, and Glanzmann's thrombasthenia. General and specific therapeutic measures for treating these disorders are discussed.

Abstract The Windalia reservoir is a 22,000 acre, 600 well oil reservoir with a 25 year waterflood history, complicated by stress induced fracturing and a major pattern realignment. The reservoir recovery performance was studied by an integrated combination of geostatistical, finite difference, and stream tube models. The methodology is an extension of previously published work' to larger and more complex reservoir problems. The basis of the approach is a geostatistical reservoir description derived from well logs and core data. Fine grid 2-D and 3-D models are developed to correlate sweep efficiency as a function of characteristic reservoir stratigraphics. These correlations are translated into fractional flow functions and pseudo relative permeabilities which are used in full field stream tube models and 2-D areal finite difference models. The stream tubes provide recovery calculation and front tracking and the areal model provides a calculation for pressure and well productivity. The methodology provided a reasonable representation of the reservoir and its well histories for an efficient expenditure of labor and computer time. Model construction, well history matching and forecasts were completed in four months, a significant improvement over previous attempts to model this reservoir. Refinement, update and sensitivities continue as a reservoir management process. Introduction The Windalia Sand Reservoir was discovered in 1964 on Barrow Island, which lies about 40 miles off the coast of western Australia. The reservoir is a heterogeneous sandstone, generally subdivided into nine layers. Six lithofacies have been identified from core: flat laminated mudstones, bioturbated sandy mudstones, bioturbated muddy sandstones, bioturbated sandstones, carbonate cemented beds, and carbonate concretions. These lithofacies are complexly interbedded and occur throughout the nine layers. The Windalia was initially developed on 40 acre, 5- and 9-spot waterflood patterns in the late 1960's. There was a general conversion to line drive in 1974 with various infill and realignment projects since that time. There are currently 650 production and injection wells, as shown on Fig. 1, producing 14,000 B/D of oil and 33,000 B/D of water. The reservoir has now produced 240 million barrels of oil from an OOIP estimated to be in the 750 million - 1 billion barrel range. STUDY OBJECTIVE The objective of this project was to derive a history matched model of the reservoir which could be used to forecast infill drilling and workover response and to assist in general reservoir management. During the past 15 years there had been several attempts to build simulation models for the Windalia, all of them unsatisfactory because of the heterogeneity of the formation, the large number of wells, and the various realignment and infill projects which characterize its history. In the current study, the technique of hybrid simulation was used as a means of accommodating the size and complexity of the reservoir, and its history, for a reasonable expenditure of time and cost. P. 627^