Does better local governance improve district growth performance in Indonesia

A large literature suggests that countries with better governance have higher growth rates. We explore whether this is also true at the sub-national level in Indonesia. We exploit a new dataset of firm perceptions of the quality of economic governance in 243 districts across Indonesia to estimate the impact of nine different dimensions of governance on district growth. Surprisingly, we find relatively little evidence of a robust relationship between the quality of governance and economic performance. However, we do find support for the idea that structural variables, such as economic size, natural resource endowments and population, have a direct influence on the quality of local governance as well as on economic growth. This suggests that efforts to improve local governance should pay greater attention to understanding how such structural characteristics shape the local political economy and how this in turn influences economic performance. Keywords: economic growth; Indonesia; decentralisation; investment climate; governance; private sector

A Structured Model of Video Reproduces Primary Visual Cortical Organisation

The visual system must learn to infer the presence of objects and features in the world from the images it encounters, and as such it must, either implicitly or explicitly, model the way these elements interact to create the image. Do the response properties of cells in the mammalian visual system reflect this constraint? To address this question, we constructed a probabilistic model in which the identity and attributes of simple visual elements were represented explicitly and learnt the parameters of this model from unparsed, natural video sequences. After learning, the behaviour and grouping of variables in the probabilistic model corresponded closely to functional and anatomical properties of simple and complex cells in the primary visual cortex (V1). In particular, feature identity variables were activated in a way that resembled the activity of complex cells, while feature attribute variables responded much like simple cells. Furthermore, the grouping of the attributes within the model closely parallelled the reported anatomical grouping of simple cells in cat V1. Thus, this generative model makes explicit an interpretation of complex and simple cells as elements in the segmentation of a visual scene into basic independent features, along with a parametrisation of their moment-by-moment appearances. We speculate that such a segmentation may form the initial stage of a hierarchical system that progressively separates the identity and appearance of more articulated visual elements, culminating in view-invariant object recognition

Alignment of the CMS silicon tracker during commissioning with cosmic rays

The CMS silicon tracker, consisting of 1440 silicon pixel and 15 148 silicon strip detector modules, has been aligned using more than three million cosmic ray charged particles, with additional information from optical surveys. The positions of the modules were determined with respect to cosmic ray trajectories to an average precision of 3-4 microns RMS in the barrel and 3-14 microns RMS in the endcap in the most sensitive coordinate. The results have been validated by several studies, including laser beam cross-checks, track fit self-consistency, track residuals in overlapping module regions, and track parameter resolution, and are compared with predictions obtained from simulation. Correlated systematic effects have been investigated. The track parameter resolutions obtained with this alignment are close to the design performance

Business training and female enterprise start-up, growth, and dynamics : experimental evidence from Sri Lanka

We conduct a randomized experiment among women in urban Sri Lanka to measure the impact of the most commonly used business training course in developing countries, the Start-and-Improve Your Business (SIYB) program. We study two groups of women: a random sample operating subsistence enterprises and a random sample out of the labor force but interested in starting a business. We track impacts of two treatments – training only and training plus a cash grant – over two years. For women in business, training changes business practices but has no impact on business profits, sales or capital stock. The grant plus training combination increases business profitability in the first eight months, but this impact dissipates in the second year. Among potential startups, business training hastens entry – without changing longer-term ownership rates – and increases profitability. We conclude that training may be more effective for new owners

Preserving arteriovenous fistula outcomes during surgical training

Purpose Arteriovenous fistulae (AVFs) are the preferred option for vascular access, as they are associated with lower mortality in hemodialysis patients than in those patients with arteriovenous grafts (AVGs) or central venous catheters (CVCs). We sought to assess whether vascular access outcomes for surgical trainees are comparable to fully trained surgeons. Methods A prospectively collected database of patients was created and information recorded regarding patient demographics, past medical history, preoperative investigations, grade of operating surgeon, type of AVF formed, primary AVF function, cumulative AVF survival and functional patency. Results One hundred and sixty-two patients were identified as having had vascular access procedures during the 6 month study period and 143 were included in the final analysis. Secondary AVF patency was established in 123 (86%) of these AVFs and 89 (62.2%) were used for dialysis. There was no significant difference in survival of AVFs according to training status of surgeon (log rank x2 0.506 p=0.477) or type of AVF (log rank x2 0.341 p=0.559). Patency rates of successful AVFs at 1 and 2 years were 60.9% and 47.9%, respectively. Conclusion We have demonstrated in this prospective study that there are no significant differences in outcomes of primary AVFs formed by fully trained surgeons versus surgical trainees. Creation of a primary AVF represents an excellent training platform for intermediate stage surgeons across general and vascular surgical specialties. </jats:sec