Land use regulation and productivity - Land matters: Evidence from a UK Supermarket chain

We use store-specific data for a major UK supermarket chain to estimate the impact of planning on store output. Using the quasi-natural experiment of the variation in policies between England and other UK countries, we isolate the impact of Town Centre First policies. We find that space contributes directly to store productivity; and planning policies in England directly reduce output both by reducing store sizes and forcing stores onto less productive sites. We estimate that since the late 1980s planning policies have imposed a loss of output of at least 18.3 to 24.9% - more than a “lost decade’s” growth. JEL codes: D2, L51, L81, R32.

Estimación del impacto sobre precios de la fusión Acer- Gateway y de su anuncio en América del Norte

Esta investigación representa una contribución a la literatura sobre el análisis retrospectivo de las fusiones. Su principal objetivo es la evaluación del impacto de la fusión entre Acer y Gateway, concretada a mediados de octubre de 2007 y que permitió a estas dos firmas convertirse en el tercer proveedor mundial de ordenadores personales. En particular, se examinan los efectos que durante el período previo e inmediatamente posterior a la fusión se produjeron sobre los precios de los productos. Para ello, se aplica el método de diferencias-endiferencias, utilizando como grupo de control el conjunto de mercados americanos con mayor volumen de ventas en los previamente las empresas fusionadas no competían. Los resultados obtenidos apuntan a la existencia de un comportamiento anticompetitivo que se habría manifestado en Norteamérica antes de que la fusión se completara. Palabras clave: fusión, ordenadores personales, canibalización, diferencias-endiferencias, análisis retrospectivo. JEL: L13, L41, L42, L81.

Barriers to entry in monopoly markets: automobile distribution in Brazil

O Objetivo deste Trabalho é Analisar os Efeitos da Entrada de uma Segunda Concessionária de Automóveis em Mercados Previamente Monopolizados. para Tanto, Construiu-Se um Banco de Dados com a Localização de Concessionárias de Automóveis em Microrregiões e Características Demográficas e Econômicas Destas Microrregiões. a Partir Desse Banco de Dados e de Modelos de Escolha Binária, Foram Identificadas Variáveis que Condicionam a Existência e o Número de Concessionárias em Microrregiões. Utilizando-Se de um Modelo Adaptado de Bresnahan e Reiss (1990), Foram Estimados os Custos Fixos de Entrada de Concessionárias em Mercados Monopolizados. os Resultados Obtidos Sugerem que as Barreiras À Entrada não são Significativas, o que Aumenta a Probabilidade de que a Cláusula de Exclusividade nos Contratos de Concessão não Cause Danos À Concorrência no Mercado Brasileiro de Distribuição de Automóveis

Resonance in positron-helium scattering at medium energy

A narrow S-wave resonance has been found in the positron-helium system at about 30 eV, using the close-coupling approach, in excitation and rearrangement cross sections to He(1s2s), He(1s2p), Ps(1s) and Ps(2s) states by employing different combinations of the following basis functions: He(1s1s), He(1s2s), He(1s2p), Ps(1s) and Ps(2s), where Ps stands for the positronium atom.

Mass spectra of glueballs and hybrids

Assuming massive constituent gluons the mass spectroscopy of glueballs and hybrids is analysed in the framework of the potential model. Only pairwise potentials are considered.

President Chain Store Corporation's Hsu Chong-Jen: A Case Study of a Salaried Manager in Taiwan

Salaried managers have been increasing in top management of many Taiwanese companies. Why and how have their roles become more important? In order to answer these questions, it is necessary to examine the complicated relationships between salaried managers and the founders' families who appoint them to top-management positions. This paper examines the case of Hsu Chung-Jen, the president of President Chain Store Corporation. PCSC operates Taiwan's 7-ELEVENs, the largest convenience store chain on the island. He may be regarded as the most advanced salaried manager in Taiwan today.

Distribution System of China's Industrial Clusters: Case Study of Yiwu China Commodity City

This paper discusses the issue of upgrading industrial clusters from the perspective of external linkages. It is taken for granted that in most developing countries, due to the limited domestic market and poor traditional commercial networks, industrial clusters are able to upgrade only when they are involved in global value chains. However, the rise of China’s industrial clusters challenges this view. Historically, China has had a lot of industrial clusters with their own traditional commercial networks. This fact combined with its huge population resulted in the formation of a unique external linage to China’s industrial clusters after the socialist planning period ended. In concrete terms, since the 1980s, a traditional commercial institution . the transaction market . began to appear in most clusters. These markets within the clusters get connected to those in the cities due to interaction between traditional merchants and local governments. This has resulted in the formation of a powerful market network-based distribution system which has played a crucial role for China’s industrial clusters in responding to exploding domestic demand. This paper explains these features in detail, using Yiwu China Commodity City as a case study.

Competition of the mechanisms : how Chinese home appliance firms coped with default risk of trade credit?

During the transition period from a planned economy to a market economy in 1990s of China, there was a considerable accrual of deferred payment, and default due to inferior enforcement institutions. This is a very common phenomenon in the transition economies at that time. Interviews with home electronics appliance firms revealed that firms coped with this problem by adjusting their sales mechanisms (found four types), and the benefit of institutions was limited. A theoretical analysis claim that spot and integration are inferior to contracts, a contract with a rebate on volume and prepayment against an exclusive agent can realize the lowest cost and price. The empirical part showed that mechanisms converged into a mechanism with the rebate on volume an against exclusive agent and its price level is the lowest. The competition is the driving force of the convergence of mechanisms and improvement risk management capacity.

Understanding traders' regional arbitage : the case of rice traders in Antananarivo, Madagascar

Many studies find that agricultural markets in developing countries are poorly integrated spatially. Traders' regional arbitrage plays a key role in integrating markets across space. We investigate the performance of regional arbitrage and the associated obstacles for rice traders in Antananarivo, Madagascar. On the basis of a trader-level biweekly survey spanning 2012–2013, we find that traders are not fully exploiting the regional arbitrage opportunities: most of them fail to purchase from the cheapest district and are paying higher prices than those in the cheapest district. One apparent obstacle is obtaining price information from many different regions. To reduce search costs, we provided regional price information via SMS to randomly selected traders, but found that this had a null-effect on improving arbitrage performance. Traders tend to concentrate on trading with a few fixed districts, even if they are informed about cheaper prices in other new districts, because they worry about quality uncertainty and the trustworthiness of new partners. These findings suggest that not only transmission of price information but also issues related to produce quality and matching prevent the performance of arbitrage and market integration.

L'impatto del COVID-19 sulla performance e sugli infortuni dei podisti. Il ruolo della fisioterapia- Uno studio trasversale

Introduzione: Il COVID-19 colpisce vari apparati e il meccanismo di diffusione non è noto. La quarantena durante la malattia inoltre costringe alla sedentarietà con ripercussioni fisiche e psicologiche. Lo studio indaga se il COVID-19 possa avere un’influenza sugli infortuni e sulla performance sportiva dei podisti e il ruolo della fisioterapia nella riabilitazione post infortunio. Materiali e metodi: La raccolta dati è avvenuta tramite distribuzione di questionari cartacei e digitali nelle società podistiche italiane dal 2 Marzo al 15 Aprile 2022. I criteri di inclusione erano l’essere maggiorenni, allenarsi almeno 1-2 volte a settimana e comprendere la lingua italiana. Risultati: 245 podisti rispettavano i criteri di inclusione. Negli ultimi 3 anni l’81,63% è incorso in infortunio; per la riabilitazione la maggior parte degli atleti si è rivolta a un fisioterapista e il grado di soddisfazione della riabilitazione è molto alto. Il 45,31% ha contratto il COVID-19 e di questi il 47,74% ha riferito una percezione di diminuzione della performance dopo la malattia, la quale non è influenzata dalla durata dell’interruzione degli allenamenti. Il 48,65% è incorso in infortunio dopo il COVID-19 e il tasso d’infortunio è maggiore rispetto al periodo antecedente al contagio. Non vi è invece differenza tra l’incidenza di infortunio di chi ha contratto il COVID-19 e il restante campione. Conclusione: Il COVID-19 potrebbe non predisporre maggiormente l’atleta a infortunio rispetto alla popolazione generale, ma potrebbe aumentare la sua suscettibilità rispetto al periodo antecedente al contagio. Il percorso riabilitativo più efficace per il recupero è quello intrapreso affidandosi a professionisti sanitari del settore. La malattia per molti ha un impatto molto negativo sulla propria performance, ma questo non dipende dall’interruzione prolungata degli allenamenti e quindi potrebbe non essere dovuto al deallenamento ma a qualche aspetto non ancora indagato in letteratura.