Analysis and Valuation of Hospital Foodservice Quality-the Perugia case-study

The hospital catering is characterized for the necessity to satisfy the nutritional and dietetic principles, and the several therapeutic requirements of the patient.The main problem is to coordinate the production with the always various number of the requirements. On the other hand,emerging of competition forms in the sanitary field,based on the possibility of chosen of the structure cure from the customer and on the prices and tariffs system,has open new spaces for the recovery of a strategic perspective of the public sanitary companies respect private sector. Always mainly,the hospital companies must centralize own ttention so is minimal the difference between planned quality, distributed quality and perceived quality. The present work offers,through a public opinion pull on a specific case, a first attempt to tie the satisfaction or not satisfaction of a consumer regarding the sanitary service,on the base of some qualitatative variable. The innovation of this work consist of a index series created from the hospital documents and patient judgment (questionnaire) to establish a gap between planned and perceived quality

Firm Heterogeneity: do destinations of exports and origins of imports matter?

How do importing activities matter in explaining firm heterogeneity? How firm performances are related to foreign markets heterogeneity? Using a rich database on Italian manufacturing firms, this essay adds new evidence on the relationship between trade status and firm characteristics. We uncover evidence supporting recent theories on firm heterogeneity and international trade, together with some new facts. First, the availability of information on import and export enables us to differentiate firms involved in both trading activities - namely two-way traders - from firms that only export, and from those that only import. We show that firms engaged in both import and export outperform those involved in either importing or exporting only. Second, exploiting firm-level information on the destination of export and the origin of imports, we observe the heterogeneity among firms trading with different type of markets. We show that different destinations of exports and different origins of imports map into distinctive firm characteristics.heterogeneous firms; exports; imports; productivity, performances, destinations

F-formation Detection: Individuating Free-standing Conversational Groups in Images

Detection of groups of interacting people is a very interesting and useful task in many modern technologies, with application fields spanning from video-surveillance to social robotics. In this paper we first furnish a rigorous definition of group considering the background of the social sciences: this allows us to specify many kinds of group, so far neglected in the Computer Vision literature. On top of this taxonomy, we present a detailed state of the art on the group detection algorithms. Then, as a main contribution, we present a brand new method for the automatic detection of groups in still images, which is based on a graph-cuts framework for clustering individuals; in particular we are able to codify in a computational sense the sociological definition of F-formation, that is very useful to encode a group having only proxemic information: position and orientation of people. We call the proposed method Graph-Cuts for F-formation (GCFF). We show how GCFF definitely outperforms all the state of the art methods in terms of different accuracy measures (some of them are brand new), demonstrating also a strong robustness to noise and versatility in recognizing groups of various cardinality.Comment: 32 pages, submitted to PLOS On

Economical Phase-Covariant Cloning of Qudits

We derive the optimal N to M phase-covariant quantum cloning for equatorial states in dimension d with M=kd+N, k integer. The cloning maps are optimal for both global and single-qudit fidelity. The map is achieved by an ``economical'' cloning machine, which works without ancilla.Comment: 10 pages revtex4, 7 figures, replaced with modified versio

Coherent scattering of a Multiphoton Quantum Superposition by a Mirror-BEC

We present the proposition of an experiment in which the multiphoton quantum superposition consisting of N= 10^5 particles generated by a quantum-injected optical parametric amplifier (QI-OPA), seeded by a single-photon belonging to an EPR entangled pair, is made to interact with a Mirror-BEC shaped as a Bragg interference structure. The overall process will realize a Macroscopic Quantum Superposition (MQS) involving a microscopic single-photon state of polarization entangled with the coherent macroscopic transfer of momentum to the BEC structure, acting in space-like separated distant places.Comment: 4 pages, 4 figure

Firms in International Trade: Importers and Exporters Heterogeneity in the Italian Manufacturing Industry

This paper offers a portrait of Italian firms that trade goods. Combining data on firms' structural characteristics and economic performance with data on their exporting and importing activity, we uncover evidence supporting recent theories on firm heterogeneity and international trade, together with some new facts. In particular, we find that importing can be as important as exporting as a source of firm heterogeneity. First, we document that trade is more concentrated than employment and sales, and we show that import is even more concentrated than export both within sectors and along the sector and country extensive margins. Second, while supporting the fact that firms involved in both importing and exporting (two-way traders) are the best performers, we also find that firms involved only in importing activities perform better than those involved only in exporting. We submit that this may have to do with being mainly importers of high-tech capital goods. Third, the performance premia of internationalized firms correlate relatively more with the degree of geographical and sectoral diversification of imports.Heterogeneous firms; Exports; Imports

Exporters, Importers and Two-way Traders: the Links between Internationalization, Skills and Wages

How do trade activities affect firms’ employment and wages structures? Using firm level data on Italian manufacturing firms, this paper adds to the existing literature, by assessing how the degree of involvement in international trade impacts on workforce composition, earning levels and wage inequality. We differentiate firms involved in both trading activities - namely two-way traders - from firms that only export, and from those that only import. We show that two-way traders have a higher propensity to employ non-production workers, exhibit significant wage gaps, but also pay higher wages for both production and non production workers, relative to non internationalized firms and to firms which are involved only in either export or import. The paper also looks at how the wages and the skill structure of the trading firms change with the country of destination and origin and with the firms’ sectoral and geographical diversification.heterogeneous firms; exports; imports; wage inequality; skills.

The links between internationalization, skills and wages. The role of differences across firms and across partner countries.

Using firm level data on Italian manufacturing industry, we examine how trade activities are related to workforce composition and wages. We contribute to empirical research on these issues in three ways. First, we provide novel evidence that is consistent with multi-attribute models on firm heterogeneity and trade. In fact we show that even after controlling for various firm characteristics, including size and capital intensity, exporters still pay higher wages and employ more skilled workers than non exporters. Second, we consider the engagement of firms in international transactions, either by means of exports, imports or a combination of the two. We show that failing to control for the importing activities may bias upward export premia. Third, we look at how the wage and the employment structures of trading firms change with the country of destination and origin of trade flows. We find that wage and skill premia increase for both exporters and importers as they trade with more distant markets. Richer countries are instead associated with higher premia for importers and not for exporters.heterogeneous firms; exports; imports; productivity; market of destination and origin