The Examination of Commercial Printing Defects to Assess Common Origin,Batch Variation,and Error Rate*

Abstract: The examination of printing defects, or imperfections, found on printed or copied documents has been recognized as a generally accepted approach for linking questioned documents to a common source. This research paper will highlight the results from two mutually exclusive studies. The first involved the examination and characterization of printing defects found in a controlled production run of 500,000 envelopes bearing text and images. It was concluded that printing defects are random occurrences and that morphological differences can be used to identify variations within the same production batch. The second part incorporated a blind study to assess the error rate of associating randomly selected envelopes from different retail locations to a known source. The examination was based on the comparison of printing defects in the security patterns found in some envelopes. The results demonstrated that it is possible to associate envelopes to a common origin with a 0% error rate.     

Modeling the Distribution of Sentence Length Decisions Under a Guidelines System: An Application of Quantile Regression Models

How should sentencing disparity be assessed when decisions are constrained under a sentencing guidelines system? Much of the debate over the measurement of sentence disparity under a guidelines system has focused primarily on using specific values from within the sentencing grid (e.g., minimum recommended sentence) or on using interaction terms in regression models to capture the non-additive effects of offense severity and prior record on length of sentence. In this paper, I propose an alternative method for assessing sentencing disparity that uses quantile regression models. These models offer several advantages over traditional OLS analyses (and related linear models) of sentence length, by allowing for an examination of the effects of case and offender characteristics across the full distribution of sentence lengths for a given sample of offenders. The analysis of the distribution of sentence lengths with quantile regression models allows for an examination of questions such as: Do offender characteristics, such as race or offense severity, have the same effect on sentence length for the 10% of offenders who receive the shortest sentences as they do for the 10% of offenders who receive the longest sentences? I illustrate the application and interpretation of these models using 1998 sentencing data from Pennsylvania. Key findings show that the effects of case and offender characteristics are variable across the distribution of sentence lengths, meaning that traditional linear models assuming a constant effect fail to capture important differences in how case and offender characteristics affect punishment decisions. I discuss the implications of these findings for understanding sentencing disparitites, as well as other possible applications of quantile regression models in the study of crime and the criminal justice system.     

The completeness of the afterbirth: a medical/pathological discussion

Practical problems (with possible medicolegal implications) regarding the interpretation of the completeness of the afterbirth are discussed. The case material was obtained during surgical pathological examination and, later, at the time of autopsy of the same patient. The mother (three weeks following emergency delivery) succumbed to life-threatening complications of an epidural anesthetic accident.     

The Trilateral cooperation

Legal context: The relatively informal agreements setting up the TrilateralCooperation (TC) among the world's three most important patentoffices are contrasted with formal multinational treaties suchas the Patent Law Treaty and the abortive Substantive PatentLaw Treaty. Key points: After its inception in 1983, the TC concentrated initially ondeveloping and implementing standards for electronic storageand retrieval of prior art documents, and facilitation of searching.This was later extended to electronic sharing of priority documentsand to standardization and searching of DNA sequence databases.More recently emphasis has been placed on harmonization of searchingand examination procedures, and working groups have comparedthe approaches of the Trilateral Offices (TOs) to the patentabilityof claims in areas of new technology. Encouragingly, the resultsare usually the same, although the specific objections raisedmay differ. The ultimate goal is to reach a situation in whicha claim allowed by one TO would be accepted by the others withoutfurther examination. Practical significance: The TC has already facilitated search and examination, leadingto lower costs and shorter pendency times than would otherwisebe the case. Further progress depends on harmonization of substantivepatent law, which in turn depends on the willingness of theUSA to accept a first-to-file system.     

The effect of 1,2-indanedione,a latent fingerprint reagent on subsequent DNA profiling

The compound 1,2-indanedione was recently introduced in our laboratory as an operational reagent for developing latent fingerprints on porous surfaces. As part of the reagent implementation, a study was carried out in order to determine whether either of the two operational 1,2-indanediones formulations interferes with further DNA profiling. Both formulations are based on HFE7100 solvent. One is acidic and the other neutral. In a controlled experiment, known donors attached stamps to envelopes by licking them. The stamped envelopes were initially treated with either one indanedione formulation or the other, and DNA was then extracted for STR typing. No differences were observed between the STR profiles obtained from treated and untreated stamps and envelopes, indicating that 1,2-indanedione does not adversely affect the extraction and subsequent amplification of the STRs examined. However, preliminary results indicate that potential DNA analysis depends on the time interval between the indanedione treatment and DNA extraction as no DNA can be recovered six days following treatment. For this reason, it is strongly recommended to extract DNA from treated items of evidence as soon as possible after indanedione treatment.     

构建民事再审立案审查程序的思考

民事再审立案审查程序包括申诉复查案件的立案受理 (即立卷 )、审查、通知驳回或裁定再审三个主要环节 ,它与再审程序共同构成了我国完整意义上的民事审判监督程序。近年来 ,随着民事审判监督制度和审判方式改革的深入以及再审案件立审分立制度的推行 ,民事再审立案审查程序三个主要环节上存在的问题逐渐暴露出来。为此 ,应当反思和完善民事再审立案审查程序的基本原则 ,并从申诉复查案件立案受理条件、审查组织形式、审查方式、审查期限、再审立案标准、再审立案审批程序、诉讼文书样式等方面来考虑民事再审立案审查程序的构建。     

A statistical study of air bubbles on athletic shoesoles

Comparisons of a shoemark with a shoesole (and standards) sometimes lead to associations based on air bubbles (among other manufacturing or acquired characteristics). Today, the assessment of the evidential value of air bubbles coincidences relies largely upon the examiner's experience and/or follows sometimes a verification based on the examination of a small number of analogous pairs collected for the case at hand. Statistical data related to the occurrence and characteristics of air bubbles on shoesoles in an attempt to model the potential variability have been gathered. Seventy-one pairs of shoes with the same design, brand, model and size were obtained. Right and left soles were photographed. An image-processing algorithm was developed to allow the systematic acquisition of data such as: (1) the number of air bubbles on the sole and around given structural elements; (2) the measure of air bubbles characteristics such as their surface and position. These data allow a discussion of the assessment of the probability of finding on shoesoles (same design, brand, model and size) a certain number of air bubbles on a surface with the same positions and morphology.     

Isolation of deoxyribonucleic acid (DNA) from saliva and forensic science samples containing saliva.

Saliva and saliva-stained materials were examined as potential sources of deoxyribonucleic acid (DNA) for DNA analysis and identity testing. In this paper, the authors demonstrate that DNA was isolated and DNA banding patterns suitable for DNA typing were obtained from fresh saliva and various saliva-stained materials, such as envelopes, buccal swabs, gags, and cigarettes. Furthermore, DNA and DNA banding patterns were obtained from actual forensic evidentiary samples containing mixed saliva/semen stains. The DNA banding patterns obtained from saliva or saliva-stained material were indistinguishable from the patterns obtained from blood or hair from the same individual. Intact DNA was readily isolated and DNA banding patterns were obtained from saliva stored at -20 degrees C and dried saliva stains stored under varying conditions. We conclude that saliva and saliva-stained material can be good sources of DNA for analysis and for DNA typing in certain forensic settings.     

Forensic analysis of wooden safety matches -- a case study.

In this case, an individual was suspected of attempting to burn materials potentially relating to a murder case. A number of spent and unspent matches were seized at the scene by police for forensic examination. Coincidentally, a police raid at the suspect's house revealed a number of matchboxes, all of the same brand, containing matches that had a visual similarity to those recovered at the scene. Stable Isotope Profiling (SIP) was used to assess whether matches could either be distinguished or shown to be indistinguishable by 13C and 2H isotopic composition. These results were then compared to those from the X-ray diffraction (XRD) analysis of match heads and microscopy of the wood. SIP showed the scene matches and seized matches to be different, which was confirmed by XRD and microscopy analyses.     

Evaluating the statistical significance of single band profiles in VNTR analyses

VNTR profiles may present either a single band or two bands. If two bands are present then the individual is a heterozygote for these two bands. However, if only one band is present there is ambiguity as to the true genotype of the individual. This person may be a homozygote in that he has two copies of the same allele, or he may be a heterozygote for two very close bands that cannot be separated on the gel. The second NRC report proposed the use of the '2p' rule, or Formula 4.10a in the sub-structure case, as a conservative upper bound in the statistical interpretation. However, further examination suggests that these formulae are not necessarily conservative. In this paper we examine this phenomenon by deriving a formula that contains both the corrections for null alleles and for subpopulation effects.     

Cognitive processes in criminal profile construction: a preliminary study

This study undertook an empirically based examination of the cognitive processes associated with the accurate construction of a criminal psychological profile. This was accomplished by comparing the abilities of profilers and nonprofilers in two simulated profiling exercises that measured both profile accuracy and an individual's performance on various tests of memory and comprehension related to the case materials presented in each exercise. The results of these experiments suggest that an incremental relationship exists between comprehension of the case materials and accuracy of the profiles generated. In addition, the findings provide some tentative indications that the comprehension of case material in a narrative (i.e., written) format is an integral cognitive function to proficient profiling.     

Upon a failure to equal entry and exit wounds: a possible case of tandem bullets in view of the literature

Forensic medicine specialists take account of the projectiles remaining in the body when determining whether there are an equal number of entry and exit wounds. The absence of projectiles should suggest blank cartridges, a single exit wound despite several firings and bullet embolization, whereas the presence of more projectiles than expected may indicate tandem projectiles and multiple projectiles entering through the same hole. Radiological examination of the whole body, follow-up of the bullet trajectories, examination of the clothes, and examination of the gun and projectiles play a key role in solving difficult cases. We review such situations based on a case of tandem bullets. Two 7.65-mm bullets created lethal wounds entering through a 32-year-old victim's neck followed the same trajectory to a certain point and diverted. We discussed the possibilities in cases that show inequalities between entry and exit wounds, in light of relevant literature.     

The Hierarchy of Case Priority (HiCaP):- A proposed method for case prioritisation in digital forensic laboratories

The need for digital forensic science (DFS) services has grown due to widespread and consistent engagement with technology by members of society. Whilst digital evidence often plays an important role in many inquiries, available investigative resources have failed to keep pace with such demand for them. As a result, the use case prioritisation models for backlog/workload management are of increasing importance to ensure the effective deployment of laboratory resources. This work focuses on the concept of ​​case prioritisation in a digital forensic laboratory setting, following the submission of exhibits for examination, where this workflow is described. The challenges of case management and prioritisation in laboratories are discussed, with both ‘case acceptance’ and ‘case prioritisation’ procedures explained. Finally, the ‘Hierarchy of Case Priority’ (HiCaP) - a transparent, risk-based approach for the prioritisation of cases for examination, is proposed and described using examples.     

低水平书写签名字迹的分析与鉴定

在文件检验工作中,少量字的签名字迹性质判断具有一定难度,若出现时间相隔久远,同期样本稀少,当事人年龄跨度几十年的案件,要对字迹性质作出准确判断将更困难。本文通过一起经济纠纷案,就三十年前低书写水平的签名字迹进行检材与样本分析、特征价值判断、背景调查、综合评断分析与经验总结,强调在检验中应当全面了解当事人的背景材料,对案件事实与鉴定要求之间的关联性进行深入调查研究,还需要准确把握字迹变化的原因,注意避免因书写习惯的变化性因素而错误评断字迹特征属性,进而做出科学、准确的鉴定意见。     

Is routine histopathologic examination beneficial in all medicolegal autopsies?

Postmortem examinations are performed for a number of reasons. Medical autopsies are performed at the request of and with the consent of the next of kin of a decedent and are often requested to determine the extent of a disease process or to evaluate therapy. In contrast, medicolegal autopsies are performed by a forensic pathologist primarily to determine cause and manner of death but also to document trauma, diagnose potentially infectious diseases and report them to the appropriate agencies, provide information to families about potentially inheritable diseases, provide information to family members and investigative agencies, and testify in court. As medicolegal and hospital autopsies differ in their purpose, so do they differ in procedure. Medicolegal autopsies often include histologic analysis, but not always, as with medical autopsies. We designed a prospective study to address the question of whether or not routine histologic examination is useful in medicolegal cases, defining a routine case as one where histology would not normally be performed and where the cause and manner of death were readily apparent during the gross autopsy. We reviewed brain, heart, liver, kidney, and lung sections on 189 routine forensic cases and compared the results to the gross anatomic findings. Of the 189 cases, in only 1 case did microscopic examination affect the cause of death and in no case did microscopic examination affect the manner of death. Thus, we feel that routine microscopic examination (performing histologic examination in all cases regardless of cause and manner of death) in forensic autopsy is unnecessary. Microscopic examination should be used, as needed, in certain circumstances but is not necessary as a matter of routine.     

Using strangers for money: a discussion on money-launderers in organized crime

In a recent study of Malm and Bichler (Trends in Organized Crime 16:365–381, 2013) it was found that very little professional laundering occurs in illicit markets. That is to be expected because not every criminal will make enough money to have a need for the services of professional money launderers. However, it is less clear to what extent the same outcome applies to those criminals who do make a lot of criminal money. In order to find out, 31 case studies were examined that deal with large scale importation of cocaine in Europe. It appears that professionals are often engaged, as almost half of the files indicate the presence of such specialists. However, that doesn't imply that such specialists are absent in the other half of the files. After examination of the investigative strategy of each police investigation, it turns out that there is a strong correlation between a focus on financial matters at the beginning of an investigation and the finding of professional launderers. This has important implications for the use of Social Network Analysis and qualitative case file research. The nonappearance of certain types of people in the police investigations has as much to do with the investigative strategy as with their real absence.     

A fast and safe non-bleaching method for forensic skeletal preparation

Over the last three decades, forensic anthropologists increasingly have consulted on fleshed human remains cases in which the examination of skeletal elements is critical in answering questions of identification and the circumstances of death. This was certainly the case at the Human Identification Laboratory in Tucson, Arizona. As the caseload increased, it became clear that a method for defleshing human remains was needed in order to expeditiously expose the osseous surfaces for analysis, yet at the same time, preserving the evidentiary nature of the material. As a result, a fast, safe and economical method for defleshing human remains and producing high quality, degreased skeletal elements was developed. This non-bleaching cooking method utilizes chemicals that are easily obtained and inexpensive standard household ingredients that can be purchased at most grocery stores.     

Sudden cardiac death in a young woman: tumor of the atrioventricular (AV) node or citalopram intoxication?

Atrioventricular (AV) node tumor is a very rare lesion of the cardiac conduction system. Clinically, it is associated with complete AV block and sudden cardiac death, often in apparently healthy young people.We report a case of a 24-year-old woman who developed ventricular fibrillation during sexual intercourse and died before admittance to the hospital. The woman had a medical history of depression and was treated with citalopram.At first, no macroscopic or microscopic pathologic changes were found. Toxicologic analysis showed a toxic level of citalopram in the blood. Further microscopic examination of the cardiac conduction system disclosed a tumor of the AV node. Immunohistochemical staining confirmed endodermal origin in accordance with the latest hypothesis of the pathogenesis of this tumor.It was concluded that this young woman died of cardiac arrhythmia due to the AV tumor and not from citalopram intoxication, as first suspected. This case emphasizes the importance of a microscopic examination of the cardiac conduction system in cases of sudden unexpected death, even in cases with a plausible cause and manner of death at first glance.     

Law, pregnancy and sport: what are the repercussions when a pregnant lady plays?

This article reflects on the issue of pregnancy and sport that was brought to the fore in Gardner v National Netball League (2001) 182 ALR 408; [2001] FMCA 50 and Gardner v All Australia Netball Association Ltd (2003) 174 FLR 452. It suggests that these cases did not provide a definitive discussion of the tortious liability implications that initially led Netball Australia to introduce a ban on pregnant players. In an attempt to fill some of these gaps, other case law that deals with liability of sporting organisations and prenatal injury is discussed. The article primarily focuses on whether the unborn child when born alive will have an action against her or his mother as a result of injury occasioned while the mother was playing sport when pregnant. This examination is undertaken in light of recent Australian tort reform as well as changes in policy direction. The article summarises the legal position of the parties involved in sport--sporting organisations, medical practitioners, other participants and the pregnant mother--and argues that, with reference to the guidelines and case law, in only a very small number of cases would liability be found against the sporting organisation or pregnant mother as a result of injuries incurred prenatally.     

Threat mail and forensic science: DNA profiling from items of evidence after treatment with DFO

Two cases of threatening letters with their accompanying envelopes were received to the Division of Forensic Identification unit of the Israel Police. The envelopes, including the stamps, and the letters were initially examined for latent fingerprints by the DFO reagent, known to cause degradation of DNA. Although no latent fingerprints could be visualized on any of the items, the biology laboratory using organic DNA extraction, was successful in defining genetic profiles from all the items employing six STR loci, even after treatment with DFO. In a controlled experiment, a known donor attached a stamp, by licking, to an envelope. This item was treated with DFO and then profiled using STR loci. The results showed that previous DFO treatment on the control stamp before DNA analysis had no negative effects on obtaining the DNA profile of the known donor using STR loci.