This paper proposes a new approach to sparse-signal detection called the horseshoe estimator. We show that the horseshoe is a close cousin of the lasso in that it arises from the same class of multivariate scale mixtures of normals, but that it is almost universally superior to the double-exponential prior at handling sparsity. A theoretical framework is proposed for understanding why the horse...

We consider the motion of coorbital satellites in the framework of the Restricted Three Body problem for We show a mechanism to generate horsehoe periodic orbits and we compute some families of horseshoe periodic orbits when vary ing the Jacobian constant We conclude that there exist stable horseshoe periodic orbits which t with the motion of Saturn coorbital satellites Janus and Epimetheus

Anomalies of the appendix are extremely rare, and a horseshoe appendix is even rarer. A literature search has revealed only five reported cases. In this report, we present a case of a horseshoe appendix.A 78-year-old man was referred for further examination following a positive fecal occult blood test. A mass in his ascending colon was detected on colonoscopy, while computed tomography showed t...

abstract horseshoe lung is a congenital pulmonary malformation that is usually associated with scimitar syndrome. this malformation consists of fusion of both pulmonary lobes from the posterobasal segments. the fusion appears in the retrocardiac area, in front of the esophagus and thoracic aorta. pleural separation of pulmonary lobes distinguishes pseudohorseshoe appearance from a true horsesho...

BACKGROUND AND OBJECTIVE Pyeloplasty in horseshoe kidneys can be challenging due to aberrant vasculature, renal malrotation, and ectopic location. Fewer than 20 cases of minimally invasive (MIS) pyeloplasty in horseshoe kidneys have been reported in the literature to date. We herein report the first 2 cases of laparoendoscopic single-site (LESS) pyeloplasty for UPJ obstruction in horseshoe kid...

Aim: To present a very rare case of bilaterally-complicated horseshoe kidney by nephrolithiasis in a patient with situsinversus with levocardia and skeletal anomalies. Case Report: A 41-year-old female presented by right loin pain. Abdominal ultrasound showed bilateral kidney stones with malrotation, right mild hydronephrosis and transposition of the abdominal organs. Chest X-ray showed the hea...

Horseshoe crabs have been a model for many biomedical science studies. Medicinal value of horseshoe crabs comes from its blue blood, eye and exoskeleton (chitin). Ability of blood to clot in the presence of bacteria, rendering the bacteria harmless has created its biomedical importance. Blood cells (amebocytes) carry Factor C, which binds lipopolysaccharide (LPS), undergoes a structural reorgan...

Biomedical companies extract blood from the horseshoe crab, Limulus polyphemus, for the production of Limulus Amebocyte Lysate, used worldwide for detecting endotoxins in injectable solutions and medical devices. Despite the extensive use of horseshoe crabs by the biomedical industry, total hemolymph volume in animals of a given size is not known. The hemolymph volume of 60 adult horseshoe crab...

We report our experience performing a robot-assisted dismembered pyeloplasty on a patient with a ureteropelvic junction obstruction in a horseshoe kidney and a prior history of endopyelotomy. We provide 18-month follow-up demonstrating that robotic pyeloplasty is a reasonable second treatment option for patients with horseshoe kidneys with failed prior endourological management.

The forcing relation on n-modal cycles is studied. If α is an nmodal cycle then the n-modal cycles with block structure that force α form a 2n-horseshoe above α. If n-modal β forces α, and β does not have a block structure over α, then β forces a 2-horseshoe of simple extensions of α.