Using ArcGIS to map the Mount Abram Ski Area, Locke Mills, Maine

The ski patrol at Mt. Abrams, a family-owned resort in Greenwood ME, is lacking an accurate map of the ski area. Recently, in an effort to attract more adventurous skiers and riders, Mt. Abrams has opened all of its wooded in-bound terrain, increasing the potential for accidents and placing extra strain on the patrol force. The goal of this project is to use ArcGIS to create a detailed boundary-to-boundary map of the mountain\u27s features including trails, glades, chairlifts, t-bars, buildings, terrain parks, and toboggan houses. These features were traced in the field using a Trimble GPS unit and uploaded to georeferenced Maine GIS Catalog images of the mountain. In addition to these physical settings, the map includes possible evacuation routes and high risk areas. This information was collected from current ski patrol members. The finished product will be presented to the Mt. Abrams ski patrol

The First 200 Studies in Applied Economics

The Studies in Applied Economics working paper series began as a way to disseminate research by Steve Hanke’s undergraduate students that deserved wider notice. The series broadened to include work by established scholars and practitioners. We use the landmark of 200 papers to review what the series has achieved and what we have learned about guiding bright undergraduate students in doing original scholarly research.Keywords. Economics, Writing, Students.JEL. A22; A30

Classification of agricultural priority and reserved areas in Brandenburg under consideration of bio-economic climate simulations

Ensuring a crisis-proof food supply has become a key political issue. In Germany, official spatial planning allows the use of priority and reserved areas to secure land for agricultural use and regional food supply. The focus should be particularly on climate-resilient areas that also have a stable yield potential in the future. This paper supplements widely used, static approaches for determining priority and reserved areas with a dynamic bio-economic analysis that takes future climate scenarios into account. The results for the German federal state of Brandenburg show a high area equivalence between the static and dynamic approaches. In the case of data gaps, for example, static approaches such as soil quality indices can serve as an adequate proxy for future yield potentials. However, not all climate-robust areas can be classified as potential reserved or priority areas. Furthermore, areas that show low yield potential under future conditions are not released for other land uses. Feedback from stakeholders involved in the study showed that the use of the dynamic approach and a target value using the results of a foodshed model lead to broad acceptance. The method developed here can make a valuable contribution to climate change adaptation in spatial planning instruments.Eine krisensichere Lebensmittelversorgung hat sich zu einem politischen Kernthema in Deutschland entwickelt. Durch Vorrang- und Vorbehaltsgebiete können raumordnerisch Flächen für die landwirtschaftliche Nutzung und die regionale Nahrungsversorgung gesichert werden. Dabei sollte der Fokus insbesondere auf klimarobusten Flächen liegen, die auch zukünftig ein stabiles Ertragspotenzial aufweisen. Der vorliegende Beitrag ergänzt weit verbreitete, statische Ansätze zur Bestimmung von Vorrang- und Vorbehaltsgebieten um eine dynamische bio-ökonomische Analyse unter Berücksichtigung zukünftiger Klimaszenarien. Die Ergebnisse für die Beispielregion Brandenburg zeigen eine hohe Flächenäquivalenz zwischen dem statischen und dem dynamischen Ansatz. Im Fall von beispielsweise Datenlücken können statische Ansätze wie Ackerzahlen als adäquater Indikator für zukünftige Ertragspotenziale dienen. So können jedoch nicht alle klimarobusten Gebiete als potenzielle landwirtschaftliche Vorbehalts- oder Vorzugsgebiete klassifiziert werden. Außerdem werden Flächen, welche unter zukünftigen Bedingungen ein geringes Ertragspotenzial zeigen, nicht für andere Landnutzungen freigegeben. Das Feedback von in der Studie einbezogenen Interessengruppen zeigt, dass die Verwendung des dynamischen Ansatzes und eines Zielwerts unter Verwendung der Ergebnisse eines foodshed-Modells zu einer breiten Akzeptanz führt. Die hier entwickelte Methode kann einen wertvollen Beitrag zur Integration von Klimaanpassungselementen in raumordnerische Instrumente leisten

Maternal outcomes and risk factors for COVID-19 severity among pregnant women.

Pregnant women may be at higher risk of severe complications associated with the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which may lead to obstetrical complications. We performed a case control study comparing pregnant women with severe coronavirus disease 19 (cases) to pregnant women with a milder form (controls) enrolled in the COVI-Preg international registry cohort between March 24 and July 26, 2020. Risk factors for severity, obstetrical and immediate neonatal outcomes were assessed. A total of 926 pregnant women with a positive test for SARS-CoV-2 were included, among which 92 (9.9%) presented with severe COVID-19 disease. Risk factors for severe maternal outcomes were pulmonary comorbidities [aOR 4.3, 95% CI 1.9-9.5], hypertensive disorders [aOR 2.7, 95% CI 1.0-7.0] and diabetes [aOR2.2, 95% CI 1.1-4.5]. Pregnant women with severe maternal outcomes were at higher risk of caesarean section [70.7% (n = 53/75)], preterm delivery [62.7% (n = 32/51)] and newborns requiring admission to the neonatal intensive care unit [41.3% (n = 31/75)]. In this study, several risk factors for developing severe complications of SARS-CoV-2 infection among pregnant women were identified including pulmonary comorbidities, hypertensive disorders and diabetes. Obstetrical and neonatal outcomes appear to be influenced by the severity of maternal disease

How Strong is the Case for Dollarization in Central America? An Empirical Analysis of Business Cycles, Credit Market Imperfections and the Exchange Rate

In this paper, we contrast two different views in the debate on official dollarization. The Mundell (1961) framework of optimal currency areas and a model on boom-bust cycles, by Schneider and Tornell (2004), who take account of credit market imperfections prevalent in middle income countries. We highlight that the role of the exchange rate is strikingly different in the two models. While in the Mundell framework the exchange rate is expected to smooth the business cycle, the other model predicts that the exchange rate plays an amplifying role. We empirically evaluate both models for eight highly dollarized Central American economies, and find that the main benefit of official dollarization derives from avoiding a mismatch between foreign currency liabilities and domestic revenues, as well as the boom-bust episodes that are likely to follow from it. Using a new method of Cubadda (1999, 2007), we furthermore test for cyclical comovement and reject the hypothesis that the countries form an optimal currency area with the United States according to the Mundell definition

Search for Physics beyond the Standard Model in Events with Overlapping Photons and Jets

Results are reported from a search for new particles that decay into a photon and two gluons, in events with jets. Novel jet substructure techniques are developed that allow photons to be identified in an environment densely populated with hadrons. The analyzed proton-proton collision data were collected by the CMS experiment at the LHC, in 2016 at root s = 13 TeV, and correspond to an integrated luminosity of 35.9 fb(-1). The spectra of total transverse hadronic energy of candidate events are examined for deviations from the standard model predictions. No statistically significant excess is observed over the expected background. The first cross section limits on new physics processes resulting in such events are set. The results are interpreted as upper limits on the rate of gluino pair production, utilizing a simplified stealth supersymmetry model. The excluded gluino masses extend up to 1.7 TeV, for a neutralino mass of 200 GeV and exceed previous mass constraints set by analyses targeting events with isolated photons.Peer reviewe

Finishing the euchromatic sequence of the human genome

The sequence of the human genome encodes the genetic instructions for human physiology, as well as rich information about human evolution. In 2001, the International Human Genome Sequencing Consortium reported a draft sequence of the euchromatic portion of the human genome. Since then, the international collaboration has worked to convert this draft into a genome sequence with high accuracy and nearly complete coverage. Here, we report the result of this finishing process. The current genome sequence (Build 35) contains 2.85 billion nucleotides interrupted by only 341 gaps. It covers ∼99% of the euchromatic genome and is accurate to an error rate of ∼1 event per 100,000 bases. Many of the remaining euchromatic gaps are associated with segmental duplications and will require focused work with new methods. The near-complete sequence, the first for a vertebrate, greatly improves the precision of biological analyses of the human genome including studies of gene number, birth and death. Notably, the human enome seems to encode only 20,000-25,000 protein-coding genes. The genome sequence reported here should serve as a firm foundation for biomedical research in the decades ahead

Calibration of the CMS hadron calorimeters using proton-proton collision data at root s=13 TeV

Methods are presented for calibrating the hadron calorimeter system of theCMSetector at the LHC. The hadron calorimeters of the CMS experiment are sampling calorimeters of brass and scintillator, and are in the form of one central detector and two endcaps. These calorimeters cover pseudorapidities vertical bar eta vertical bar ee data. The energy scale of the outer calorimeters has been determined with test beam data and is confirmed through data with high transverse momentum jets. In this paper, we present the details of the calibration methods and accuracy.Peer reviewe

Measurement of the Jet Mass Distribution and Top Quark Mass in Hadronic Decays of Boosted Top Quarks in pp Collisions at root s=13 TeV

A measurement is reported of the jet mass distribution in hadronic decays of boosted top quarks produced in pp collisions at root s = 13 TeV. The data were collected with the CMS detector at the LHC and correspond to an integrated luminosity of 35.9 fb(-1). The measurement is performed in the lepton + jets channel of t (t) over bar events, where the lepton is an electron or muon. The products of the hadronic top quark decay t -> bW -> bq (q) over bar' are reconstructed as a single jet with transverse momentum larger than 400 GeV. The t (t) over bar cross section as a function of the jet mass is unfolded at the particle level and used to extract a value of the top quark mass of 172.6 +/- 2.5 GeV. A novel jet reconstruction technique is used for the first time at the LHC, which improves the precision by a factor of 3 relative to an earlier measurement. This highlights the potential of measurements using boosted top quarks, where the new technique will enable future precision measurements.Peer reviewe

Search for top squark pair production in a final state with two tau leptons in proton-proton collisions at root s=13 TeV

A search for pair production of the supersymmetric partner of the top quark, the top squark, in proton-proton collision events at s = 13 TeV is presented in a final state containing hadronically decaying tau leptons and large missing transverse momentum. This final state is highly sensitive to high-tan beta or higgsino-like scenarios in which decays of electroweak gauginos to tau leptons are dominant. The search uses a data set corresponding to an integrated luminosity of 77.2 fb(-1), which was recorded with the CMS detector during 2016 and 2017. No significant excess is observed with respect to the background prediction. Exclusion limits at 95% confidence level are presented in the top squark and lightest neutralino mass plane within the framework of simplified models, in which top squark masses up to 1100 GeV are excluded for a nearly massless neutralino.Peer reviewe