Influence of drill speed and feed rate on bone damage

Implant failures and postoperative complications are often associated to the bone drilling. Estimation and control of drilling parameters are critical to prevent mechanical damage to the bone tissues. For better performance of the drilling procedures, it is essential to understand the mechanical behaviour of bones that leads to their failures and consequently to improve the cutting conditions. This paper investigates the effect of drill speed and feed-rate on mechanical damage during drilling of solid rigid foam materials, with similar mechanical properties to the human bone. Experimental tests were conducted on biomechanical blocks instrumented with strain gauges to assess the drill speed and feed-rate influence. A three-dimensional dynamic finite element model to predict the bone stresses, as a function of drilling conditions, drill geometry and bone model, was developed. These simulations incorporate the dynamic characteristics involved in the drilling process. The element removal scheme is taken into account and allows advanced simulations of tool penetration and material removal. Experimental and numerical results show that generated stresses in the material tend to increase with tool penetration. Higher drill speed leads to an increase of von-Mises stresses and strains in the solid rigid foams. However, when the feed-rate is higher, the stresses and strains are lower. The numerical normal stresses and strains are found to be in good agreement with experimental results. The models could be an accurate analysis tool to simulate the stresses distribution in the bone during the drilling process.

Human security in Central Asia: can the EU help out? EUCAM Policy Brief No. 21, October 2011

The European Union is a security actor in Central Asia, although with less influence than other players. Russia and China have a much larger impact on Central Asian regimes’ security strategies. These limitations do not dispense with the need for the EU to provide a better security narrative, especially in light of its growing emphasis on human security, and to incorporate this into the current review of its strategy for the region. This policy brief will centre on the EU’s contribution to human security in Central Asia.

The ICC Debate and the EU-U.S. Struggle for Influence: The Case of the Balkan-6. ACES Working Paper No. 11, October 2007

The objectives of the European Union (EU) and the United States (US) for the countries of the Balkan region are generally assumed to be complementary. They both stress and condition their support and assistance on the progress that these countries make with regards to economic modernization, build-up of social institutions, and respect for international law. However, this rhetoric doesn't always match the facts on the ground. Often, instead of dealing with a cohesive set of policy recommendations, the countries in the region are faced with contradictory alternatives and zero-sum choices. The debate over the development of the International Criminal Court (ICC) was such a case. It centered on whether the countries in the region should exempt US personnel from the jurisdiction of the Court while in the country and thus rendering them immune from prosecution for any crimes committed for which the US courts were not willing or able to take any action. The final outcome was mixed. Three of the countries - Croatia, Serbia (and Montenegro), and Slovenia - decided not to give in to US pressure, while the remaining three - Albania, Bosnia and Herzegovina, and Macedonia - ignored the pleas and threats of the EU and of the various international non-governmental organizations and decided to sign Bilateral Immunity Agreements (BIAs) with the US. How can one explain such divergent outcomes? I argue that the credibility of actors involved played an important role in determining whether threats coming from the US or the EU were more credible, thus tipping the scales in favor of signing BIAs with the US. However, the issue of threat credibility serves only to narrow down the choices of actors. Further determination of the outcome necessitates a look at the nature of the security context in which these countries exist and operate.

The Limited Influence of the European Union in Armenia and Azerbaijan: A Domestic Explanation. EU Diplomacy Paper 9/2015

This paper seeks to explain why the European Union (EU) has had limited influence in Armenia and Azerbaijan in the framework of the European Neighbourhood Policy (ENP). Combining approaches from external governance, norm diffusion and structural foreign policy, it offers an explanation based on domestic factors in the two countries: the political regime, state capacity, political structures, domestic incentives and the perceived legitimacy of EU rules. Although willingness to reform appears to exist in Armenia, such willingness remains constrained by the country’s vulnerable geopolitical location and high dependence on Russia. By contrast, none of the domestic preconditions for EU influence identified by the analytical framework were found in Azerbaijan. The author argues that the Eastern Partnership has not properly addressed the extent to which the clan structures feed into informal political practices and enforce the sustainability of an existing regime in both countries, and that, in addition, the EU has underestimated the multipolar environment which the two countries have to operate in, making it unlikely that the current policy can reach its objectives in Armenia and Azerbaijan.

The natural influence of speech in raising man abovve the brute creation.

Mode of access: Internet.

L'homme du midi et l'homme du nord : ou, L'influence du climat.

Mode of access: Internet.

Riflessioni in difesa degli italiani su l'opera intitolata L'homme du midi et l'homme du nord ou L'influence du climat del sig. di Bonstetten.

"Articolo estratto dal vol. V degli Annali universali di statistica."

The man of the North and the man of the South; or, The influence of climate.

Mode of access: Internet.

The influence of fertility on the labor force behavior of married women /

Cover title.

The influence of sodium benzoate on the nutrition and health of man.

"Bibliography of the more important work on benzoates": p. 769-784.

Influence apart from Adoption: How Interaction between Programming and Scientific Practices Shapes Modes of Inquiry in Four Oceanography Teams

Thesis (Ph.D.)--University of Washington, 2016-06

Structural Insights into Viral Membrane Fusion Machinery via Cryo-Electron Tomography: Influenza Virus and Human Parainfluenza Virus

Thesis (Ph.D.)--University of Washington, 2016-06

Potent T cell response to a class I-binding 13-mer viral epitope and the influence of HLA micropolymorphism in controlling epitope length

The BZLF1 antigen of Epstein-Barr virus includes three overlapping sequences of different lengths that conform to the binding motif of human leukocyte antigen (HLA) B*3501. These 9-mer ((56)LPOGQLTAy(64)), 11-mer ((54)EPLPQGQLTAy(64)), and 13-mer ((52)LPEPLPQGQLTAY(64)) peptides all bound well to B*3501; however, the CTL response in individuals expressing this HILA allele was directed strongly and exclusively towards the 11-mer peptide. In contrast, EBV-exposed donors expressing HLA B*3503 showed no significant CTL response to these peptides because the single amino acid difference between B*3501 and B*3503 within the F pocket inhibited HLA binding by these peptides. The extraordinarily long 13-mer peptide was the target for the CTL response in individuals expressing B*3508, which differs from B*3501 at a single position within the D pocket (B*3501, 156 Leucine; B*3508, 156 Arginine). This minor difference was shown to enhance binding of the 13-mer peptide, presumably through a stabilizing interaction between the negatively charged glutamate at position 3 of the peptide and the positively charged arginine at HLA position 156. The 13-mer epitope defined in this study represents the longest class I-binding viral epitope identified to date as a minimal determinant. Furthermore, the potency of the response indicates that peptides of this length do not present a major structural barrier to CTL recognition.

The influence of financial participation and participation in decision-making on employee job attitudes

This study investigates the direct and indirect effects of financial participation (FP) and participation in decision-making (PDM) on employee job attitudes. The central premise is that both financial participation and participation in decision-making have effects on job attitudes, such as integration, involvement and commitment, perceived pay equity, performance-reward contingencies, satisfaction and motivation. After reviewing the theoretical and empirical literature and testing two theoretical frameworks, developed by Long (1978a) and Florkowski ( 1989), a new model was constructed to consider a combined effects of both FP and PDM, herein referred to as employee participation (EP). The underpinning of the model is based on the assumption that both ( a) the combination of financial participation and participation in decision-making ('employee participation'), and (b) participation in decision-making produce favourable effects on employee job attitudes. The test of the new model showed that employee participation does not produce more favourable effects on employee job attitudes, than does participation in decision-making on its own. The data were gathered from a questionnaire study administered in a large British retail organization that operates two types of ownership schemes - profit-sharing and SAYE schemes.

Muscle metabolism during sprint exercise in man: Influence of sprint training

In order to examine the influence of sprint training on metabolism and exercise performance during sprint exercise, 16 recreationally-active, untrained, men (TO2peak= 3.8+/-0.1 1.min(-1)) were randomly assigned to either a training (n=8) or control group (n=8). Each subject performed a 30-sec cycle sprint and a test to measure VO2peak before and after eight weeks of sprint training. The training group completed a series of sprints three times per week which progressed from three 30-sec cycle sprints in weeks 1 and 2, to six 30-sec sprints in weeks 7 and 8. Three mins of passive recovery separated each sprint throughout the training period. Muscle samples were obtained at rest and immediately following the pre- and post-training sprints and analysed for high energy phosphagens, glycogen and lactate; the activities of both phosphofructokinase (PFK) and citrate synthase (CS) were also measured and muscle fibre types were quantified, Training resulted in a 7.1% increase in mean power output (p