Crime Scene Findings and the Identification, Collection, and Preservation of Evidence

Touroo, Rachel; Fitch, A

doi:10.1007/978-3-319-67172-7_2

Cited by 4 publications

(3 citation statements)

References 6 publications

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“…This is generally performed at the scene, but if appropriate equipment is unavailable, then they must be cooled (not frozen) to slow down development and dispatched rapidly to a laboratory [ 9 ]. Preserved specimens are used for identifying the species, determining their age at the time of sampling based on their instar stage, the larval length and width measurement, and extracting gut contents for genetic and toxicological analysis [ 82 ].…”

Section: Crime Scene and Health Pathology Facilitymentioning

confidence: 99%

A Summary of Concepts, Procedures and Techniques Used by Forensic Entomologists and Proxies

Bambaradeniya,

Magni,

Dadour

2023

Insects

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Forensic entomology is a branch of forensic science that incorporates insects as a part of solving crime. Insect-based evidence recovered at a crime scene can be used to estimate the minimum postmortem interval, determine if a carcass/corpse has been relocated, and contribute to the cause and manner of death. The current review summarises the stepwise usage of forensic entomology methods at a crime scene and in the laboratory, including specimen collection and rearing, identification, xenobiotic detection, documentation, and referencing previous research and casework. It also provides three standards for the collection of insects when attending a crime scene. The Gold standard attributes to a forensic entomologist (FE) who is likely to be well-trained attending a scene. The subsequent standards (Silver and Bronze) have been added because the authors believe that this information is currently missing in the literature. The purpose is so that an attending crime scene agent/proxy with some basic knowledge and some simple tools can recover almost all the insect information required by an FE to make the best estimation of the minimum postmortem interval.

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Section: Crime Scene and Health Pathology Facilitymentioning

confidence: 99%

A Summary of Concepts, Procedures and Techniques Used by Forensic Entomologists and Proxies

Bambaradeniya,

Magni,

Dadour

2023

Insects

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“…The obligation to collect evidence, inspect the crime scene, conduct the chain of custody, and other resulting responsibilities [ 7 , 9 , 10 , 21 , 22 , 26 , 36 , 38 , 48 , 49 , 67 , 68 ], and liability for non-compliance with the law, results from the Anglo-Saxon penal law system, including the offices of a coroner or medical examiner.…”

Section: Duties Of Veterinary Expertsmentioning

confidence: 99%

Veterinary Expert: Legal Nature and Responsibility

Dzikowski

2023

Animals

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Veterinary professional practice can be performed in many forms, including expert activity. The importance of veterinary expertise is, however, often underrated and limited to only one of its areas. Nonetheless, veterinary expert opinions have significant social, legal, and economic impacts. This study investigates veterinary expertise from an interdisciplinary, comparative perspective. Ethical and legal analysis and interpretation are performed. Essential concepts and relevant aspects of veterinary expertise are analysed. Legally relevant factors of an expert opinion are identified. The relationship between the law, the language, and the understanding of the role and duties of a veterinary proficient is demonstrated. A variety of possible expert opinions and the multiplicity of veterinary scopes of such activity is presented. It is argued that the ranges of forensic veterinary medicine and of veterinary expertise are broader than is predominantly assumed. Veterinary forensic medicine is a crucial part of veterinary specialisation. Ethical and legal basics, and the scope of veterinary expert’s liability, are revealed and discussed. The conclusion is that the duties and responsibilities of expert veterinarians are particularly great due to the exercise of the public trust profession, with large importance for the whole society. Their observance is, however, crucial to ensure the highest quality of expert opinions issued by veterinarians.

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“…In the trend of high-tech crime, the police's criminal investigation ability is facing new breakthrough challenges. In the context of the intelligent era, to meet people's demand for the secure and stable development of society, many scientists in related fields have studied several advanced criminal investigation means, such as forensic DNA analysis technology [1,2], polygraph detection technology based on information analysis [3,4], and trace material evidence identification technology [5,6]. DNA analysis technology utilizes the DNA left at crime scenes to identify criminals with high matching degree and sensitivity.…”

Section: Introductionmentioning

confidence: 99%

Estimating Departure Time Using Thermal Camera and Heat Traces Tracking Technique

Wang

et al. 2020

Sensors

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Advancement in science and technology is playing an increasingly important role in solving difficult cases at present. Thermal cameras can help the police crack difficult cases by capturing the heat trace on the ground left by perpetrators, which cannot be spotted by the naked eye. Therefore, the purpose of this study is to establish a thermalfoot model using thermal imaging system to estimate the departure time. To this end, in the current work, we use a thermal camera to acquire the thermal sequence left on the floor, and convert it into the heat signal via image processing algorithm. We establish the model of thermalfoot print as we observe that the residual temperature would exponentially decrease with the departure time according to Newton’s Law of Cooling. The correlation coefficients of 107 thermalfoot models derived from the corresponding 107 heat signals are basically above 0.99. In a validation experiment, a residual analysis is conducted and the residuals between estimated departure time points and ground-truth times are almost within a certain range from −150 s to +150 s. The reverse accuracy of the thermalfoot model for estimating departure time at one-third, one-half, two-thirds, three-fourths, four-fifths, and five-sixths capture time points are 71.96%, 50.47%, 42.06%, 31.78%, 21.70%, and 11.21%, respectively. The results of comparison experiments with two subjective evaluation methods (subjective 1: we directly estimate the departure time according to obtained local curves; subjective 2: we utilize auxiliary means such as a ruler to estimate the departure time based on obtained local curves) further demonstrate the effectiveness of thermalfoot model for detecting the departure time inversely. Experimental results also demonstrated that the thermalfoot model has good performance on the departure time reversal within a short time window someone leaves, whereas it is probably only approximately 15% to accurately determine the departure time via thermalfoot model within a long time window someone leaves. The influence of outliers, ROI (Region of Interest) selection, ROI size, different capture time points and environment temperature on the performance of thermalfoot model on departure time reversal can be explored in the future work. Overall, the thermalfoot model can help the police solve crimes to some extent, which in turn brings more guarantees for people’s health, social security, and stability.

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Crime Scene Findings and the Identification, Collection, and Preservation of Evidence

Cited by 4 publications

References 6 publications

A Summary of Concepts, Procedures and Techniques Used by Forensic Entomologists and Proxies

A Summary of Concepts, Procedures and Techniques Used by Forensic Entomologists and Proxies

Veterinary Expert: Legal Nature and Responsibility

Estimating Departure Time Using Thermal Camera and Heat Traces Tracking Technique

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