A study of DNA transfers onto plastic packets placed in personal bags

The ability to detect low level DNA brings with it the uncertainty of whether the detected DNA is a result of transfer. To address this uncertainty, a simulation study was conducted in which a mock illicit drug packet was placed into the personal bags of individuals. When the average transit time of the packets was increased from around 2 h to more than 14 h, the percentage of the DNA profiles recovered from the packets which could be attributed to the individuals increased greatly from 5.3% to 48.6%. We found that drug packers who were poor shedders could not be included as contributors to the DNA profiles from the drug packets at all and there was a higher chance that individuals other than themselves could be included as contributors to the DNA profile recovered from drug packets. We also found that it was equally likely that the drug packers who had direct contact with the drug packets and bag owners who did not, could be included as contributors to the DNA profiles recovered from the packets. The results in this study highlight the importance of taking into consideration the transit time of drug packet, the shedder status of the alleged packer and the history of an item, when evaluating DNA evidence in the context of illicit drug activities.     

Forecasting the 2015 British election through party popularity functions

To forecast the May 7, 2015 British General Election, we develop party popularity models based on Continuous Monitoring Survey (CMS) data from April 2004 to February 2015. Our models predict party vote shares three months prior to the election, using previous support levels, national economic evaluations, macro-partisanship and political measures. Our Seemingly Unrelated Regression (SUR) methodology allows us to predict support for the Tories, Labour, Liberal Democrats and “other” parties, separately, yet simultaneously, by constraining total support for all parties to 100%. Our model, estimated with data from February 2015, predicts that Labour will win the highest vote share in Great Britain, but that no party will win a majority of seats in parliament.     

黑格尔论“自由’’的现实性——读黑格尔《精神现象学》第四章“意识自身确定性的真理”

"自由"之"创造性"使"精神""开创"自己的"世界","精神"在这个世界中"保持"并"发现"自己,亦即在"必然"的世界保持着自己的"自由"。在"精神""回归自由"的道路上,须得"克服"、"扬弃"怀疑主义和斯多亚主义两个极端倾向。由"怀疑主义"导向"斯多亚主义"乃是"精神""贫困"之路,"哲学"应指出"精神""致富"之路。"精神"不仅有能力"外化-异化",同时也有能力"内化-己化"。"精神"携带自己创造的财富回到自身,乃是"历史性"的一种存在方式。     

A Preliminary Study on Vacuum Metal Deposition as a Standalone Method for Enhancement of Fingermarks on Ballistic Brass Materials

In order to assess the efficacy of vacuum metal deposition (VMD) as a technique to develop fingermarks on ballistic metallic surfaces, a preliminary study using six donors (three male & three female) was conducted. Using a sequential metal deposition process, two metal combinations were studied—gold/zinc and silver/zinc. Results indicate the potential of this technique, by developing identifiable fingermarks on brass metal disks aged from a few days up to more than a month old. As the development of fingermarks on fired (brass) cartridge cases is an area of interest, a further study was conducted where a total of 20 fingermarks were deposited on cases. After firing, second level fingermark characteristics were successfully observed on cartridge cases highlighting its potential as a fingermark enhancement method for ballistic brass materials. Further work is required to fully evaluate the VMD process and its reliability as a fingermark enhancing method on ballistic surfaces.     

Comparative and Correlation Studies of Biochemical Substances in Vitreous Humor and Synovial Fluid

Vitreous humor (VH) and synovial fluid (SF) become optional postmortem samples for biochemistry investigation. However, few studies have explored SF as a potential source, and there is still controversy whether the biochemical concentrations in bilateral VH are the same. We explored the concentrations of biochemical substances in both VH and SF, and compared between both sides and between the fluids. We also correlated the biochemical concentrations in both fluids. All samples were centrifuged after collection and the supernatant fluids were used for the analysis. The results indicated no significant difference in the constituent concentrations between the fluids from both sides (p > 0.05). Sodium, potassium, chloride, and magnesium concentrations were significantly higher in the VH, but in vice versa for glucose, uric acid, and creatinine concentrations (p < 0.001). Sodium, potassium, glucose, lactate, urea, uric acid, and creatinine concentrations between both fluids showed significant correlation (p < 0.05), but not chloride and magnesium concentrations.     

Changes in Attenuated Total Reflection Fourier Transform Infrared Spectra as Blood Dries Out

The time since deposition (TSD) of a bloodstain is a valuable piece of evidence for forensic scientists to determine the time at which a crime took place. The objective of this study was to determine whether attenuated total reflection (ATR) Fourier transform infrared (FTIR) spectroscopy could be used to estimate the TSD of a bloodstain in a relatively early period (from 0 min to the time required for the bloodstain to dry out). For this purpose, we used ATR‐FTIR to study the variation in absorbance at certain wavelengths as rat and human blood sample dried out. The absorbance at 3308/cm (A3308) was found to have a close correlation with the TSD during this time period, and the changes in A3308 during the drying of rat and human blood drops under the same controlled conditions showed similar results. The current study indicates that ATR‐FTIR spectroscopy has potential as a tool for estimating TSD at early time periods of blood deposition.     

Forensic investigation of OOXML format documents

MS Office documents could be illegally copied by offenders, and forensic investigators still face great difficulty in investigating and tracking the source of these illegal copies. This paper mainly proposes a forensic method based on the unique value of the revision identifier (RI) to determine the source of suspicious electronic documents. This method applies to electronic documents which use Office Open XML (OOXML) format, such as MS Office 2007, Mac Office 2008 and MS Office 2010. According to the uniqueness of the RI extracted from documents, forensic investigators can determine whether the suspicious document and another document are from the same source. Experiments demonstrate that, for a copy of an electronic document, even if all the original characters are deleted or formatted by attackers, forensic examiners can determine that the copy and the original document are from the same source through detecting the RI values. Additionally, the same holds true if attackers just copy some characters from the original document to a newly created document. As long as there is one character left whose original format has not been cleared, forensic examiners can determine that the two documents are from the same source using the same method. This paper also presents methods for OOXML format files to detect the time information and creator information, which can be used to determine who the real copyright holder is when a copyright dispute occurs.     

UNTIL DEATH DO US PART? WHY COURTS SHOULD EXPAND PRENUPTIAL AGREEMENTS TO INCLUDE TEN‐YEAR MARRIAGES

It has become apparent that marriage, while still strongly valued by society and government, has become less appealing to Americans as a whole. The changes taking place in society, whether economic or moral, have resulted in married couples becoming the minority in the United States. This decrease demonstrates that there is a need for reform, and that couples need to be provided with new options that will incentivize them to choose this union over cohabitation. This Note will discuss how expanding prenuptial agreements to allow couples to contract to the length of their marriage may help to accomplish that goal. This expansion will give couples the ability to tailor their relationship to fit their individual expectations and quell the reservations commonly associated with formalized relationships. Furthermore, such an expansion would be consistent with current law regulating premarital agreements and would still allow state governments to remain involved in regulation, making it less drastic of a reform than privatization.     

Daring to Be Heard: Advertorials by Organized Interests on the Op-Ed Page of The New York Times , 1985-1998

Advertorials are a form of outside lobbying that organized interests use to influence policymakers and attentive publics. It is apparent from their popularity that organized interests consider them to be an effective form of political communication. This article analyzes 2,805 organized interest advertorials that appeared on the lower right quadrant of The New York Times op-ed page from 1985 to 1998. Advertorials take two broad forms: (a) image advertorials, which are paid messages by organized interests designed to create a favorable climate of opinion, and (b) advocacy advertorials, which are sponsored messages intended to win support for an interest's viewpoints on controversial issues. Typologies of advertorials (11 categories), organized interests (21 categories), corporate and noncorporate economic interests (29 categories), and policy content (28 categories) are used to document annually and over time who is sponsoring advertorials, what types of advertorials are being used, what interests avail themselves of advertorial campaigns, which issue areas are receiving attention, what images and policy messages are being communicated, which organizations sponsor the most advertorials, and the timing of such political advertising campaigns. We find over time an increasing number of advertorials, an increasing number and diversity of sponsoring interest organizations, an increasing trend toward advocacy advertorials, a continuing but declining sponsorship dominance by corporate interests, a shifting policy issue emphasis that corresponds to events in the political environment, and evidence that organized interests employ a variety of sponsorship strategies.     

Understanding the media/terrorism relationship: An analysis of ideology and the news in time magazine

Conservative terrorism scholars have made the claim that the media have become a propaganda tool for terrorists and sympathetically portray terrorist activities. This article provides quantitative and qualitative data from Time magazine in 1986 suggesting that this view is mistaken. News production is treated as a social process that both informs and obscures, rather than as a neutral process that simply provides ‘objective’ facts. The results of the investigation reveal seven ways in which ideology is manifested in the terrorism news: semantics, language, headlines, social and historical context, treatment of objectives, trivialization, and amplification of violence. The ideological uniformity and lack of diversity apparent in terrorism news suggests that this kind of treatment results in a lack of understanding of the media/terrorism relationship and serves to support conservative views about the nature of terrorism and appropriate responses to it.