Patella sex determination by 3D statistical shape models and nonlinear classifiers

Sex determination is one of the essential steps in personal identification of an individual from skeletal remains. Most elements of the skeleton have been subjected to discriminant function analysis for sex estimation, but little work has been done in terms of the patella. This paper proposes a new sex determination method from the patella using a novel automated feature extraction technique. A dataset of 228 patellae (95 females and 133 males) was amassed from the William M. Bass Donated Skeletal Collection from the University of Tennessee and was subjected to noninvasive high resolution computed tomography (CT). After the CT data were segmented, a set of features was automatically extracted, normalized, and ranked. The segmentation process with surface smoothing minimizes the noise from enthesophytes and ultimately allows our methods to distinguish variations in patellar morphology. These features include geometric features, moments, principal axes, and principal components. A feature vector of dimension 45 for each subject was then constructed. A set of statistical and supervised neural network classification methods were used to classify the sex of the patellar feature vectors. Nonlinear classifiers such as neural networks have been used in previous research to analyze several medical diagnosis problems, including quantitative tissue characterization and automated chromosome classification. In this paper, different classification methods were compared. Classification success ranged from 83.77% average classification rate using labels from a Fuzzy C-Means (FCM) clustering step, to 90.3% for linear discriminant classification (LDC). We obtained results of 96.02% and 93.51% training and testing classification rates, respectively, using feed-forward backpropagation neural networks (NN). These promising results using newly developed features and the application of nonlinear classifiers encourage the usage of these methods in forensic anthropology for identifying the sex of an individual from incomplete skeletons retaining at least one patella.     

Revitalization of waqf administration ＆ family waqf law

Historically speaking, the institution of waqf played an incredible role in providing all the basic and fundamental services to Muslim societies in terms of providing education, goon health care, basic infrastructures, employment opportunities, enhanced the commercial and business activities, food for the hunger, sheltered for the poor and the needy, besides supporting the agricultural and industrial sectors. Nevertheless, its role has been deteriorated since the end of the 19th century up to the present as the governments in different Muslim countries centralized its administration and abolished family waqf. The main objective of this paper is to revitalize the administration and the law of waqf in order to meet the basic and the essential services which are needed in Muslim societies and without any cost to the government.     

Medicolegal aspects of 3 cases of bizarre self-mutilation

Three cases of bizarre self-mutilation are reported because of the unusual methods used and the unexpected good sequel in one of them.     

B. Reviews: general

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THE HISTORY OF THE BRITISH PETROLEUM COMPANY.‐ VOLUME I: THE DEVELOPING YEARS 1901–1932.. By R.W.Ferrier. Cambridge University Press, 1982. pp.801. £37.50.

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Improving Sex Estimation from Crania Using a Novel Three‐dimensional Quantitative Method,,

This study utilizes an innovative 3D approach to discover metric variables that obtain the highest classification rates for sex estimation from the cranium. Models were constructed from 222 cranial CT scans of U.S. Whites from the Bass Donated Collection. These models were used to create a statistical bone atlas that captures the primary shape variation in the skull and facilitates rapid computer‐automated analyses. The bone atlas showed that important size‐related sex variables are bizygomatic breadth, maximum cranial length, cranial base length, and mastoid height. Shape‐related variables capture sex differences in the projection of the glabellar region, inclination of the frontal, and cranial base flexion. In addition, vault thickness is highly dimorphic, with females having on average thicker vaults in the frontal region, and males having thicker vaults in the occipital region. Cross‐validated linear discriminant analysis obtained >95% accuracy (97.5% with 11 variables and 95.5% with eight variables).     

Sadat Forum on U.S.-Egyptian Relations

The following is the edited text of a discussion held November 28, 2000, at the Sadat Forum at Brookings, cohosted by Richard Haass, vice-president and director of Foreign-Policy Studies at the Brookings Institution, and Shibley Telhami, the Anwar Sadat chair for Peace and Development at the University of Maryland.     

Identification of sex depending on radiological examination of foot and patella

Forensic anthropology involves the building of an antemortem profile of an individual from skeletal remains. This includes sex, race determination, and age and stature estimation. Because most bones that are conventionally used for sex determination are often recovered either in a fragmented or incomplete state, it has become necessary to use denser bones that are often recovered intact, eg, the patella, calcaneus, and talus. The present work was performed to investigate the possibility of estimation of sex from some radiologic measurements among a known cross-section of Egyptian population. In this study lateral and anteroposterior radiographs of the right foot and knee were made on 160 living unfractured and nonpathologic individuals comprising 80 males and 80 females aged 25 to 65 years referred to the Radiology Department of Assiut University Hospital. Two measurements on right patella (maximum height and maximum width) and 2 measurements of metatarsal bones (length and midshaft diameter), were used to determine sex by univariate and multivariate discriminant analysis. Eighty radiographs of foot and patella of individuals not used in the original sample were randomly selected to test the accuracy of this method. The study revealed that significant sex differences were demonstrated based on these measurements taken on metatarsal bones more than on patella. One function associating 2 parameters (length and midshaft) of the third metatarsal bone obtained the highest value of correct sex determination with rate of 100% accuracy. The multivariate function associating length of the first, third, and fifth metatarsal bones and midshaft of first, second, and fifth metatarsal gave 100% accuracy. Test of multivariate function on the independent sample revealed a correct classification of 87.5%.     

Crowdfunding operations: Outreach factors in developing economies

This study aims to explore factors that contribute to the outreach of crowdfunding platforms in developing economies. Specifically, it aims to examine the perspectives of experts, funders, and fundraisers to provide several applicable recommendations to accelerate the outreach. An initial framework has been developed to fit with the developing economies; experts from Jordan were meet to validate the framework suitability; two questionnaires were developed for funders and fundraisers; crowdfunding experts from more than 10 countries worldwide reviewed and validated the methodology and the questionnaires; 833 questionnaires were collected, coded, and analyzed; analysis and statistical tests validated by statistical academic and analysis specialists. Outcomes affirm the importance of crowdfunding outreach proposed factors in developing economies with a variation between concerned parties: Experts emphasize “supervision and a regulatory framework”; funders focus on “Openness and Transparency”; and fundraisers focus on “Financial Knowledge” as essential factors to the outreach of these platforms. This study focused on the “Debit ‐based” and “Equity ‐based” crowdfunding platforms. Therefore, some findings may not be generalized to the “Donation ‐based” and “Reward ‐based” platforms. Several applicable recommendations have been suggested.