التمييز الجنائي لبقع تلميع الأحذية السوداء باستخدام الانعكاس الكلي المخفض - تحويل فورييه الطيفي بالأشعة تحت الحمراء والقياسات الكيميائية
محتوى المقال
الملخص
يتم مصادفة وجود مسحات تلميع الأحذية أو البقع كأدلة إثبات على مجموعة متنوعة من السطوح وخاصة في الحالات المتعلقة بالاعتداء الجنسي والجسدي والقتل والسرقة وحالات السطو. ويمكن استخدام دليل التتبع هذا كدليل على التلامس، وذلك لتضييق نطاق البحث في التحقيقات الجنائية. ويمكن أن يكون تحديد وتمييز العينات ذات البنية التركيبية المماثلة وتدرج اللون نفسه مهمة صعبة على المحقق.
في العمل الحالي، تم عمل إجراء فحص بواسطة الانعكاس الكلي المخفض - تحويل فورييه بالأشعة تحت الحمراء لتمييز عينات تلميع الأحذية من 15 علامة تجارية مختلفة، مع استخدام أدوات القياس الكيميائي. تبلغ القوة التمييزية للتحليل البصري 99.04%، بينما في التحليل الأساسي للمكونات 98.09%، وهو أمر مهم للغاية. تم إجراء الاختبار مع التعمية على عينات غير معروفة للمحلل، للتنبؤ بمصدر العينة. كما تمت دراسة تباين العلامات التجارية الداخلية، والتجانس، وتأثير الأسطح المختلفة على تحليل العينات.
توفر الطريقة التي تم فحصها في هذه الدراسة نتائج معتبرة لتحديد وتمييز عينات تلميع الأحذية من علامات تجارية مختلفة. ويمكن التعرف على البقع الموجودة على الأسطح وربطها بمصدرها الأصلي كذلك.
الكلمات المفتاحية
علوم الأدلة الجنائية، الآثار المادية، بقع تلميع الأحذية، تحليل الطيفي فورييه، القياسات الكيميائية
التنزيلات
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