Forensic integrity verification of video recordings based on MTS files

Digital video is used in criminal trials as evidence with legal responsibility because video content vividly depicts events occurring at a crime scene. However, using sophisticated video editing software, assailants can easily manipulate visible clues for their own benefit. Therefore, the integrity of digital video files acquired or submitted as evidence must be ensured. Forensic analysis of digital video is key to ensuring the integrity of links with individual cameras. In this study, we analyzed whether it is possible to ensure the integrity of MTS video files. Herein, we propose a method to verify the integrity of MTS files encoded by advanced video coding high definition (AVCHD), which is frequently used for video recording. To verify MTS file integrity, we propose five features. Codec information, picture timing, and camera manufacture/model are modified AVI and MP4-like format video verification features. Group of pictures and Universally Unique Identifier patterns were specifically developed for MTS streams. We analyzed the features of 44 standard files recorded using all recording options of seven cameras. We checked whether integrity can be validated on unmanipulated videos recorded in various environments. In addition, we considered whether manipulated MTS files edited in video editing software could be validated. Experimental results show that all unmanipulated and manipulated MTS files with known recording devices were discriminated only when all five features were checked. These results show that the proposed method verifies the integrity of MTS files, strengthening the validity of MTS file-based evidence in trials.     

A reference database of Windows artifacts for file-wiping tool execution analysis

Anti-forensic technology can play an effective role in protecting information, but it can make forensic investigations difficult. Specifically, file-wiping permanently erases evidence, making it challenging for investigators to determine whether a file ever existed and prolonging the investigation process. To address this issue, forensic researchers have studied anti-forensic techniques that detect file-wiping activities. Many previous studies have focused on the effects of file-wiping tools on $MFT, $LogFile, and $DATA, rather than on Windows artifacts. Additionally, previous studies that have examined Windows artifacts have considered different artifacts, making it difficult to study them in a comprehensive manner. To address this, we focused on analyzing traces in 13 Windows artifacts of 10 file-wiping tools' operations in the Windows operating system comprehensively. For our experiments, we installed each file-wiping tool on separate virtual machines and checked the traces that the tools left behind in each artifact. We then organized the results in a database format. Our analysis revealed that most of the tools left traces on other artifacts, except for JumpList, Open&SavePidlMRU, and lnk. There were also some cases where traces remained on the other three artifacts. Based on our research, forensic investigators can quickly identify whether a file-wiping tool has been used, and it can assist in decision-making for evidence collection and forensic triage.     

Globalization and Divergent Paths of Industrial Development: Mobile Phone Manufacturing in China,Japan, South Korea and Taiwan

Globalisation has challenged the way industrial development takes place. Fragmented and decentralised global production and the rapid growth of consumer markets in emerging economies demand a more sophisticated framework to analyse development paths than does the dichotomy of export orientation and import substitution. This article proposes a typology based on (a) specialisation in the global value chain and (b) market orientation to distinguish different development trajectories and then applies the typology to mobile phone manufacturing in four East Asian countries. This study finds that globalisation does not lead to the convergence of development paths, but promotes cross-national divergence depending on countries’ positions in the value chain and market niches. Both Korea and Taiwan emerge as key players in global markets, yet in different parts of the global value chain. Their common orientation toward global markets strikingly contrasts the inability of Japanese firms to translate their domestic success overseas. Finally, Chinese firms concurrently engage in different development paths, making the country’s multi-path approach unique. The implications of these findings are discussed in terms of industrial development in East Asia in an era of globalisation.     

Focal Points and Turning Points in Negotiation: A Comparative Analysis

In this article, we examine the roles of focal points and turning points in negotiation. Both concern impasses in negotiation, and negotiators can exploit them to move past impasses. Each term uses the word “point” differently, however. A focal point refers to a single salient coordinating concept shared by the parties. A turning point is a departure that takes place during the course of a negotiation, when the course seems to change. Precipitants precede turning points and consequences follow them. In this article, we focus on the relationship of these two negotiation concepts. We raise the following questions: Does the development of focal points precipitate departures, and, if so, how? Do departures lead to the development of focal points, and, if so, how? Are there circumstances in which focal points do not precipitate turning points and vice versa? Do negotiations that feature focal points create more or less durable agreements? Do negotiations that include turning points create more or less durable agreements? To help answer these questions, we have analyzed four cases. In the German Foundation Agreement negotiation, the development of focal points precipitated turning points. In the South African Interim Constitution negotiations, turning point departures precipitated the development of focal points. And in the negotiations to end the Burundi civil war and to reach the Nouméa Accord between France and New Caledonia, parties shared focal points that did not precipitate turning points. These case analyses provide insights into the role of focal points in producing effective and durable agreements. They also suggest opportunities for further research on the interaction between these concepts.     

The changing political culture of the African National Congress

The early elite of the African National Congress (ANC) embraced values of moral improvement, individual responsibility and a sense of social consciousness. The ANC now governs South Africa, but with what appears to be a different set of principles. The current scourge of corruption, increasing state control, coupled with a general lack of service delivery point to behaviour of the ruling party which is inward-looking, self-seeking and self-preserving. Arguing that political culture and its accompanying values and attitudes is a prime motivator of behaviour, the paper seeks to understand the changing political culture of the dominant party. To understand the political culture of the ANC we use interviews with ANC parliamentarians and ANC supporters conducted in 2006–2007 and 2013 as well as an analysis of the ANC's Strategy and Tactics policy documents. We contend that the liberal values of the early elites were never fully embedded, but in their stead is a liberationist culture, where the state is normatively understood to be extensive and embodying the will of the people. We argue, that through the resulting centralized determination of the interests of the people, patronage networks, and diminishing of accountability, a system conducive to corruption and the pursuit of personal interest is created.     

The effects of the IMF on expropriation of foreign firms

This paper seeks to explain the determinants of foreign expropriation in the developing world. We argue that the International Monetary Fund (IMF) helps to reduce the likelihood of nationalization because of the direct leverage the Fund holds over borrowers, especially as expropriation is a blatant violation of international property rights. Using expropriation data from 1961 to 2006, and several different measures for the Fund, we find that countries under IMF agreements are less likely to nationalize foreign firms. We also show that the Fund’s influence is greatest when the IMF loan represents a larger share of the borrower country’s gross domestic product (GDP) as well as in countries with weaker political institutions. The takeaway is that IMF continues to influence policy choices in the developing world.     

TOF‐SIMS Analysis of Red Color Inks of Writing and Printing Tools on Questioned Documents

Time‐of‐flight secondary ion mass spectrometry (TOF‐SIMS) is a well‐established surface technique that provides both elemental and molecular information from several monolayers of a sample surface while also allowing depth profiling or image mapping to be performed. Static TOF‐SIMS with improved performances has expanded the application of TOF‐SIMS to the study of a variety of organic, polymeric, biological, archaeological, and forensic materials. In forensic investigation, the use of a minimal sample for the analysis is preferable. Although the TOF‐SIMS technique is destructive, the probing beams have microsized diameters so that only small portion of the questioned sample is necessary for the analysis, leaving the rest available for other analyses. In this study, TOF‐SIMS and attenuated total reflectance Fourier transform infrared (ATR‐FTIR) were applied to the analysis of several different pen inks, red sealing inks, and printed patterns on paper. The overlapping areas of ballpoint pen writing, red seal stamping, and laser printing in a document were investigated to identify the sequence of recording. The sequence relations for various cases were determined from the TOF‐SIMS mapping image and the depth profile. TOF‐SIMS images were also used to investigate numbers or characters altered with two different red pens. TOF‐SIMS was successfully used to determine the sequence of intersecting lines and the forged numbers on the paper.     

Revictimized Adult Women: Perceptions of Mental Health Functioning and Associated Services

In this study, using a sample of adult women (N = 418) from various environments, mental health outcomes and perceptions about different types of support following childhood and adulthood sexual and physical violence were assessed. The respondents were from three locations: general community, state prison, and sexual assault and domestic violence service providers. A cluster analysis based on victimization experiences was conducted; subsequent analyses showed that women who endured more types of abuse had more self-reported mental health difficulties. Somewhat paradoxically, women who utilized more therapeutic services held more negative perceptions of their mental health functioning, while use of tangible services had no significant association. Those who found therapeutic services helpful had significantly higher self-reported concurrent mental health functioning.     

University reputation and technology commercialization: evidence from nanoscale science

We study how the scientific reputations and technology transfer policies of universities affect patenting by university researchers, with particular regard to whether they assign patent ownership to their university or to an outside firm. Using data on the career output of over 33,000 researchers in nanosciences, we find a strongly positive relationship of university reputation in nanosciences with the number of university-assigned patents, but almost a negligible association with firm-assignment of patents. University technology transfer office resources are related positively to both types of patents, but with diminishing returns. In contrast, the share of license revenue offered upfront to researchers is positively associated with university-assigned patents, but negatively related to firm-assigned patents. Taken together, our results suggest that universities that streamline their technology transfer efforts and improve their research reputation through support for basic research will see long-term success in technology commercialization.