Nonmarket networks among migrants

"This paper examines nonmarket interactions among migrants from same origins in the urban labor market of Bangkok, Thailand. We test whether the labor-market performance of previous migrants has externalities to that of new migrants who moved from the same province of origin. Our empirical results, which control origin fixed effects, time-fixed effects, and origin/year-specific correlated shocks, show that (1) the relative size of the migrant population in the market decreases employment probabilities of new migrants (negative substitution effect), (2) the employment probability of previous migrants increases those of new migrants (positive externalities), and (3) when the employment probability of previous migrants approaches to unity, the size effect becomes positive, showing informational scale economies. The results imply that the positive informational scale effect dominates the negative substitution effect when the efficiency of previous migrants is sufficiently high in the labor market." Authors' Abstractnetworks ,nonmarket interactions ,migrants ,employment ,

Nonmarket networks among migrants

"This paper examines nonmarket interactions among migrants from same origins in the urban labor market of Bangkok, Thailand. We test whether the labor-market performance of previous migrants has externalities to that of new migrants who moved from the same province of origin. Our empirical results, which control origin fixed effects, time-fixed effects, and origin/year-specific correlated shocks, show that (1) the relative size of the migrant population in the market decreases employment probabilities of new migrants (negative substitution effect), (2) the employment probability of previous migrants increases those of new migrants (positive externalities), and (3) when the employment probability of previous migrants approaches to unity, the size effect becomes positive, showing informational scale economies. The results imply that the positive informational scale effect dominates the negative substitution effect when the efficiency of previous migrants is sufficiently high in the labor market." Authors' Abstractnetworks ,nonmarket interactions ,migrants ,employment ,

NONMARKET NETWORKS AMONG MIGRANTS: EVIDENCE FROM METROPOLITAN BANGKOK, THAILAND

This paper examines nonmarket interactions among migrants from same origins in the urban labor market of Bangkok, Thailand. We test whether the labor-market performance of previous migrants has externalities to that of new migrants who moved from the same province of origin. Our empirical results, which control origin fixed effects, time-fixed effects, and origin/year specific correlated shocks, show that (1) the relative size of the migrant population in the market decreases employment probabilities of new migrants (negative substitution effect), (2) the employment probability of previous migrants increases those of new migrants (positive externalities), and (3) when the employment probability of previous migrants approaches to unity, the size effect becomes positive, showing informational scale economies. The results imply that the positive informational scale effect dominates the negative substitution effect when the efficiency of precious migrants is sufficiently high in the labor market

NONMARKET NETWORKS AMONG MIGRANTS: EVIDENCE FROM METROPOLITAN BANGKOK, THAILAND

This paper examines nonmarket interactions among migrants from same origins in the urban labor market of Bangkok, Thailand. We test whether the labor-market performance of previous migrants has externalities to that of new migrants who moved from the same province of origin. Our empirical results, which control origin fixed effects, time-fixed effects, and origin/year specific correlated shocks, show that (1) the relative size of the migrant population in the market decreases employment probabilities of new migrants (negative substitution effect), (2) the employment probability of previous migrants increases those of new migrants (positive externalities), and (3) when the employment probability of previous migrants approaches to unity, the size effect becomes positive, showing informational scale economies. The results imply that the positive informational scale effect dominates the negative substitution effect when the efficiency of precious migrants is sufficiently high in the labor market

Nonmarket networks among migrants: evidence from metropolitan Bangkok, Thailand

Networks, Migrants, Bangkok, J21, J61, O15,

Achalasia treated with per-oral endoscopic myotomy (POEM)

Esophageal achalasia is a disorder of the lower esophageal sphincter muscle. Patients present with dysphagia, chest pain, vomiting, and aspiration. Esophageal achalasia had traditionally been treated with esophageal achalasia balloon dilatation and the Heller-Dor method, but in recent years, the use of per-oral endoscopic myotomy (POEM) has increased. Our patient, a 39-yr-old male, began experiencing dysphagia 4 years prior to his referral to our hospital. Based on the results of esophagogastroduodenoscopy, esophageal radiography and high-resolution manometry, we made the diagnosis of esophageal achalasia (Chicago classification type I) . After informed consent from the patient and his family and approval from our hospital's ethics committee were obtained, we performed a POEM. The patient was discharged on the 4th day post-surgery. At the 1-year post-operative examination, no worsening of symptoms and no relapse were observed. POEM is an excellent treatment method for esophageal achalasia from the perspective of therapeutic effect and prevention of invasion. We recommend that it be considered as the first-choice treatment for achalasia. However, accessibility to the procedure itself is limited due to the few adequately trained operators worldwide. POEM should thus be performed by an expert operator at a high-volume center