Y-stent-assisted coil embolization of anterior circulation aneurysms using two solitaire AB devices: a single enter experience

Wide-neck intracranial aneurysms remain a challenge to endovascular treatment. We describe our experience in repairing wide-neck aneurysms of the anterior circulation located at arterial branch points using coil embolization assisted by Y-stenting using two Solitaire® stents. Six wide-neck intracranial aneurysms located on the middle cerebral artery bifurcation 3, pericallosal artery 1, and anterior communicating artery 2 were repaired by Y-stent-assisted coil embolization using two Solitaire® stents. Four cases were incidental findings of aneurysm and two cases were previously treated ruptured aneurysms that had undergone recanalization. All the cases were successfully treated without complications. Follow-up by digital subtraction angiography and magnetic resonance angiography at six months showed the stents to be patent with no recanalization of the aneurysm sacs. Repairing wide-neck aneurysms of the anterior circulation by Y-stent-assisted coil embolization using two Solitaire® stents is a simple and safe method of treating complex aneurysms. While the results are promising, larger series with longer term follow-ups are needed to corroborate that this treatment method is superior to other technique

The linkages between business strategies and compensation policies using miles and snow's framework

This study links a multidimensional measure of compensatíon strategy to Miles and Snow's (1978) business strategies, and examines their interactive impact on firm performance. The results reported here indicate that a more mechanistic compensation strategy makes a greater contribution to firm performance among defenders, while a more organic compensation strategy makes a greater contribution to firm performance among prospector

The importance of various work aspects and their organiza tional consequences using Hofstede's cultural dimensions

This study examines the importance employees place on various work aspects according to their nation's relative positioning along Hofstede's four cultural dimension: power distance, individualism, uncertainty avoidance, and masculinity/feminity. Based on a cross-national sample of over 5,000 employees representing 20 countries, the results uncover differential patterns of responses by cultural groupings. The data also suggest that importance and satisfaction interactively affect several organizational consequences critería: job satisfaction, company satisfaction, intent to leave the firm, and organizational cornmitment

The effectiveness of organization-wide compensation strategies in technology intensive firms

This study examines compensation strategies formulated and implemented by high technology firms and their relative effectiveness. Based on a sample of 173 firms, empirical results indicate that the following pay strategies are most appropriate for high technology organizations: A greater emphasis on the individual rather than the job as the unit of analysis, sharing of risks between employees and the firm, an external market orientation, dispersed decision making authority for pay allocation purposes, reliance on aggregate incentives and a longer time orientation

Activist Hedge Funds and the Corporation

The long-term effects of hedge fund activism are controversial. Some empirical studies document that activism is associated with increased long-term firm value, suggesting that activists can better discipline management. Other studies, however, challenge these results, arguing that the incorporation of possible selection effects exposes activism as detrimental to long-term firm value. This Article contributes to this ongoing debate, producing novel empirical evidence on the relationship between activist campaigns, the financial value of firms, key governance arrangements, and corporate legal rules. We first document qualitative evidence that untargeted “control” firms sharing similar characteristics to targeted firms perform better in the long term than the target firms, and then show that hedge fund activism is associated with increased risk-taking but has no significant impact on managerial incentives. These combined findings provide support for the view that the substantial private gains hedge funds realize through activism come at the expense of long-term firm value, rather than from increased managerial accountability. Consistent with these results, we further show that defensive mechanisms matter for deterring hedge fund activism only as long as they provide an effective higher-level constraint to protect a firm’s commitment to long-term value creation, such as when they are premised on shareholder consent or embedded in a managerial-friendly legal environment. This would explain why staggered boards and incorporation in states with more anti-takeover statutes can deter future activist interventions, while the poison pill, surprisingly, does not. The Article concludes with recommendations to enhance the deterrent effect of current defensive mechanisms against short-term hedge fund activism

The Effects of Inquiry Learning Model Training and Critical Thinking Towards SMA Student Learning Outcomes

The purposes of the research are: (1) To determine differences in learning outcomes of students with Inquiry Training models and Direct Instruction teaching models, (2) to determine differences in physics learning outcomes of students who have high critical thinking and low critical thinking, (3) to determine the interaction between learning models with the level of critical thinking in improving student Physics learning outcomes. The sample in this study conducted in a cluster random sampling of two classes, where the first class as a class experiment applied Inquiry Training models as a class and the second class of controls implemented Direct Instruction models. The instrument is used in this study is physics learning outcomes tests in narrative form as many as 7 questions and critical thinking test in narrative form as 7 questions that have been declared valid and reliable. The results were found: (1) there are differences in physical students learning outcomes are taught by Inquiry Training models and Direct Instruction teaching models. Learning outcomes of students who are taught by Inquiry Learning Model Training better than student learning outcomes are taught with Direct Instruction Model Learning. (2) There is a difference in student\u27s learning outcomes that have high critical thinking and low critical thinking. Student learning outcomes that have a high critical thinking better than student learning outcomes that have a low critical thinking. (3) There is interaction between learning and mastery of material Model Physics prerequisite to student learning outcomes. Learning outcomes of students who are taught by the model is influenced also by the Inquiry Training critical thinking, while learning outcomes of students who are taught with Direct Instruction models are not affected by the students\u27 critical thinking

Effects of silviculture on native tree species richness: interactions between management, landscape context and regional climate

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/98148/1/jpe12064.pd

The Impact of Specific Viruses on Clinical Outcome in Children Presenting with Acute Heart Failure

Abstract: The presence and type of viral genomes have been suggested as the main etiology for inflammatory dilated cardiomyopathy. Information on the clinical implication of this finding in a large population of children is lacking. We evaluated the prevalence, type, and clinical impact of specific viral genomes in endomyocardial biopsies (EMB) collected between 2001 and 2013 among 63 children admitted to our hospital for acute heart failure (median age 2.8 years). Viral genome was searched by polymerase chain reaction (PCR). Patients underwent a complete two-dimensional echocardiographic examination at hospital admission and at discharge and were followed-up for 10 years. Twenty-seven adverse events (7 deaths and 20 cardiac transplantations) occurred during the follow-up. Viral genome was amplified in 19/63 biopsies (35%); PVB19 was the most commonly isolated virus. Presence of specific viral genome was associated with a significant recovery in ejection fraction, compared to patients without viral evidence (p < 0.05). In Cox-regression analysis, higher survival rate was related to virus-positive biopsies (p < 0.05). When comparing long-term prognosis among different viral groups, a trend towards better prognosis was observed in the presence of isolated Parvovirus B19 (PVB19) (p = 0.07). In our series, presence of a virus-positive EMB (mainly PVB19) was associated with improvement over time in cardiac function and better long-term prognosis