Privacy in Inter-Vehicular Networks: Why simple pseudonym change is not enough

Inter-vehicle communication (IVC) systems disclose rich location information about vehicles. State-of-the-art security architectures are aware of the problem and provide privacy enhancing mechanisms, notably pseudonymous authentication. However, the granularity and the amount of location information IVC protocols divulge, enable an adversary that eavesdrops all traffic throughout an area, to reconstruct long traces of the whereabouts of the majority of vehicles within the same area. Our analysis in this paper confirms the existence of this kind of threat. As a result, it is questionable if strong location privacy is achievable in IVC systems against a powerful adversary.\u

The physiology and pharmacology of some cellulose derivatives

Increasing knowledge in physics and chemistry has stimulated research on high polymers, or to use another term, on macromolecules and on their applications in various fields. The definition of macromolecules given in 1922 by Staudinger and Fritschi states that a macromolecule is a compound with more than 1,500 atoms and with a molecular weight exceeding 10,000; dissolved it shows colloidal properties and cannot be dialyzed

Secure Vehicular Communication Systems: Implementation, Performance, and Research Challenges

Vehicular Communication (VC) systems are on the verge of practical deployment. Nonetheless, their security and privacy protection is one of the problems that have been addressed only recently. In order to show the feasibility of secure VC, certain implementations are required. In [1] we discuss the design of a VC security system that has emerged as a result of the European SeVeCom project. In this second paper, we discuss various issues related to the implementation and deployment aspects of secure VC systems. Moreover, we provide an outlook on open security research issues that will arise as VC systems develop from today's simple prototypes to full-fledged systems

Variation in the trunk musculature of caecilians (Amphibia: Gymnophiona)

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/73775/1/j.1469-7998.1982.tb02083.x.pd

The circulation of the endolymph

No Abstract.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/49601/1/1000390103_ftp.pd

Observations upon the structure and normal contents of the ductus and saccus endolymphaticus in the Guinea-pig (Cavia cobaya)

No Abstract.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/49600/1/1000390102_ftp.pd

Job requirements compared to medical school education: differences between graduates from problem-based learning and conventional curricula

Background: Problem-based Learning (PBL) has been suggested as a key educational method of knowledge acquisition to improve medical education. We sought to evaluate the differences in medical school education between graduates from PBL-based and conventional curricula and to what extent these curricula fit job requirements. Methods: Graduates from all German medical schools who graduated between 1996 and 2002 were eligible for this study. Graduates self-assessed nine competencies as required at their day-to-day work and as taught in medical school on a 6-point Likert scale. Results were compared between graduates from a PBL-based curriculum (University Witten/Herdecke) and conventional curricula. Results: Three schools were excluded because of low response rates. Baseline demographics between graduates of the PBL-based curriculum (n = 101, 49% female) and the conventional curricula (n = 4720, 49% female) were similar. No major differences were observed regarding job requirements with priorities for "Independent learning/working" and "Practical medical skills". All competencies were rated to be better taught in PBL-based curriculum compared to the conventional curricula (all p < 0.001), except for "Medical knowledge" and "Research competence". Comparing competencies required at work and taught in medical school, PBL was associated with benefits in "Interdisciplinary thinking" (Δ + 0.88), "Independent learning/working" (Δ + 0.57), "Psycho-social competence" (Δ + 0.56), "Teamwork" (Δ + 0.39) and "Problem-solving skills" (Δ + 0.36), whereas "Research competence" (Δ - 1.23) and "Business competence" (Δ - 1.44) in the PBL-based curriculum needed improvement. Conclusion: Among medical graduates in Germany, PBL demonstrated benefits with regard to competencies which were highly required in the job of physicians. Research and business competence deserve closer attention in future curricular development

The impact of domestic diversification and top management teams on the international diversification of Chinese firms

Despite increasing research on outward foreign direct investment (OFDI) by firms from emerging economies, our understanding of the relationship between domestic operations and international diversification of these firms is still limited. Using a unique dataset of Chinese listed firms, we examine the impact of domestic diversification on their international diversification. We find that international diversification is positively affected by firms' domestic industrial and domestic regional diversification. We also find that top management team (TMT)'s previous international experience strengthens the impact of domestic diversification on firms' international diversification, whereas TMT's prior political connections weakens the impact of domestic diversification on international diversification

The mesencephalic root of the fifth nerve. A comparative anatomical study

No Abstract.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/49899/1/900460202_ftp.pd