The next step is evidence collection. Processing a crime scene without disturbing the evidences is a difficult task and investigators should take every precaution to gather evidence without affecting the crime scene. (GSA)
Crime scene stepping pads' can be used for walking around the area without damaging potential evidences. Photographs and video must be taken before proceeding with the rough sketching around the crime scene. For this purpose 'crime scene sketch kits' must be used. Evidence should be gathered using appropriate evidence collection tools so as not to erase the fingerprints or cause any other damage. It is important for the investigator to carefully consider and gather even microparticle evidences using micro evidence gathering kit. Evidences gathered should be properly catalogued and stored in 'tamper resistant evidence bags'. Evidence collection envelopes with transparent or viewing capabilities are appropriate as they allow for physical examination of the evidence without having opening the packs. Also, evidence bags pre-printed with identification data offer an easy way to collect, store, record and present information from the crime scene. (GSA)
3) in spite of the rapid advancements such as DNA analysis, fingerprints still continue to be the mainstay method of identification in criminal investigations. Optical, physical and chemical processes are the three main methods of enhancing latent fingerprints. The appropriateness of any one particular method is usually determined by the nature of the crime scene. However, optical processes offer the best non-destructive method of fingerprint analysis. Even in cases of fingerprints processed by chemical and physical methods, optical processes such a colouring; luminescence, etc. enhance the fingerprints significantly. Latent fingerprints are most difficult to process and it is essential for the analyst to have an excellent knowledge of human secretions and environmental effects. Fingerprint powders are used to detect specific chemical compounds. (Aluminium powders, magnetic powders, luminescent powders, etc.) However, successful detection using fingerprint powders requires the presence of at least 500 to 1000ng of the material. Even then powdering continues to be the most common fingerprint identification technique.
Other methods such as ninhydrin coloring and luminescence detection suing DFO reagent are more sensitive and hence...
(p. 214). In short, even if one is willing to overlook all of the glaring flaws with polygraphs and the ultimate impossibility of accurately measuring their accuracy, the best that can be said about them is that they detect deception better than random chance. Though it likely need not be said, "better than flipping a coin" seems a paltry justification for the still-widespread use of polygraphs in the criminal justice
Since the polygraph is inadmissible in many criminal courts, should it be incorporated in employment decisions in regards to government and law enforcement positions? Please provide a rationale for your position. On one hand, there is a fundamental difference between using polygraphs in criminal cases and employment decisions: namely, the burden of proof in criminal cases is much higher, as it is in relation to civil cases. Therefore, to qualify as
3. Variables Such as Gender There are various disparities in the overall demographics of this type of offense. As one report on the demographics of sex offenders in the United States, notes; "… although the vast majority of attention on sex crimes focuses on men as the offenders, an increased awareness of females as sex offenders has surfaced in recent years." (Female Sex Offenders, 2007) This study also adds the important
These individuals are at risk of either confessing to crimes they did not commit or otherwise compromising their rights by virtue of inappropriate police interrogation techniques (Gudjonsson, 2003), a fact that has increasingly been recognized by the courts in their evaluation of the constitutionality of the interrogation methods that were used by police during their confinement preparatory for trial (Kinports, 2007). Conclusion Taken together, the research indicated that police interrogation remains
Racial Profiling of African-Americans in Lake County, Indiana Students need to have an awareness about racial profiling, who are most likely to be targets for racial profiling, and about the steps necessary to work upon the solutions to racial profiling and this can be understood within the context of racial profiling in North West Carolina. Racial profiling is considered to be one of the vital civil rights concerns of the present
Identify examples of problems dealing with educational levels, pay scale, and seniority. Problems with educational levels, pay scale, and seniority are also issues with merged departments. Smaller departments may not have had the training opportunities that larger departments had, and their officers may not be as prepared or well versed in some areas, such as detective work or gang activities. This can affect pay scale, and different departments may have different
Our semester plans gives you unlimited, unrestricted access to our entire library of resources —writing tools, guides, example essays, tutorials, class notes, and more.
Get Started Now