1,657 research outputs found
Richard A. and Susan F. Smith Campus Center
No full textMassachusetts Ave. facade (has two story retail wing at left); In 1955, Sert founded a studio in Cambridge, Massachusetts, which in 1958 became a partnership with Huson Jackson and Ronald Gourley. Sert was the Graduate School of Design dean when he designed the building. Holyoke Center, which occupies a full city block in the heart of Harvard Square, is a ten-story, 360,000 square foot facility. The main plan of the concrete structure is H-shaped, with the north wing along Massachusetts Avenue and south wing along Mt. Auburn Street. The central connecting portion sets back from both Dunster Street and Holyoke Street and is approximately the same width as the two wings. Holyoke Center is the main administration building of Harvard University. It includes underground parking, the arcade, shops, and a bank at street level, university offices above, and a fully equipped infirmary, and University Health Services. At street level, a pedestrian arcade, occupying two stories in height, runs through the block. The building is set for renovation in 2016 and has been renamed. Source: docomomo (US) [website]; http://www.docomomo-us.org (accessed 8/2/2014
Grup de xiquets de l'Escolania d'Onda acompanyats pel mestre, Lluis Villanueva, durant un dia en la platja
No full textGrup de xiquets de l'Escolania d'Onda acompanyats pel mestre, Lluis Villanueva, durant un dia en la platja. Entre els xiquets podem veure a l'actual alcade d'Onda Enrique Navarro Andre
Firm Size, Technical Change and Wages: Evidence from the Pork Sector from 1990-2005
No full textA long-standing puzzle in labor economics has been the positive relationship between wages and firm size. Even after controlling for worker's observed characteristics such as education, work experience, gender, and geographic location, a significant firm size wage effect averaging 15 percent remains. This paper investigates whether the size-wage premium on hog farms persists over time and whether the magnitude is growing or shrinking. The paper pays particular attention to the matching process by which workers are allocated to farms of different size and technology use, and whether the matching process may explain differences in wages across farms. The study relies on four surveys of employees on hog farms collected in 1990, 1995, 2000, and 2005. The survey was conducted across the United States. The data allow us to evaluate how farm size and technology adoption have changed over time and how employee pay has changed in response to these changes. Detailed investigations of these pay differences between small and large hog farms and between farms using few and many technologies show that the differences cannot be explained away by differences in the education, work experience, or geographic location of the farm. Although more educated and experienced workers are more likely to work on larger and more technologically advanced hog farms, the positive relationships between wages and both farm size and technology remain large and statistically significant when differences in observable worker attributes are controlled. Furthermore, these effects are reinforcing in that large hog farms also adopt more technologies, and so the firm size effect persists even after differences in the number of technologies are held constant. The size-wage and technology-wage prema have persisted over time, and we cannot reject the null hypothesis that the premia are constant over the sample period.Agribusiness, Livestock Production/Industries,
Electrocatalytic CO2 reduction by aminopyridine cobalt complexes: electronic effect of substituents on the pyridyl ring and mechanistic insights
No full textIn the last decade, several earth-abundant metal-based molecular catalysts have been found highly active for the photochemical or electrochemical CO2 reduction. However, despite their efficiency for the light-driven CO2-to-CO process,1 the electrocatalytic performances of Co complexes containing N4 or N5 ligands are still generally affected by catalyst deactivation,2 large overpotentials3 and low faradaic yields, due to either ligand decomposition or a preferential H2 evolution pathway under acidic conditions.4 To overcome these barriers, design of novel Co catalysts should be coupled to a deep understanding of the electrocatalytic mechanism, based on the characterization of key intermediates formed during the process. 5
Herein, we present a series of novel synthesized [CoII(Y,XPyMetacn)(OTf)2] complexes (1R, Scheme 1) containing N4 tetradentate ligands with general formula Y,XPyMetacn (1-[2′-(4-Y-6-X-pyridyl)methyl]-4,7-dialkyl-1,4,7-triazacyclononane),6 employed as catalysts for the electrochemical reduction of CO2. The introduction of different substituents at the - and -positions of the pyridine allowed us to systematically evaluate the effect of the electronic properties of the ligand on the catalytic activity. As highlighted by the electrochemical data, the redox non-innocent character of the Y,XPyMetacn ligand is extremely sensitive to the substitution at the pyridyl ring, and influences not only the E1/2(CoII/I) value, but also the nature of the reduction event itself, thus leading to different reactivity of the electrochemically generated CoI species towards CO2. Moreover, extensive spectroscopic (NMR) and spectroelectrochemical (IR and UV-Vis) studies were carried out to investigate the intermediates produced in the course of the catalytic process. Theoretical modelling provided also key mechanistic details for the CO2 reduction reaction.
Scheme 1. General structures of the 1R complexes under study
References
1 Z. Guo, S. Cheng, C. Cometto, E. Anxolabéhère-Mallart, S.-M. Ng, C.-C. Ko, G. Liu, L. Chen, M. Robert,T.-C. Lau, J. Am. Chem. Soc. 2016, 138, 9413−9416
2 K.-M. Lam, K.-Y. Wong, S.-M. Yang, C.-M. Che, Dalton Trans. 1995, 1103−1107
3 A. Chapovetsky, T. H. Do, R. Haiges, M. K. Takase, S. C. Marinescu, J. Am. Chem. Soc. 2016, 138, 5765−5768
4 D. C. Lacy, C. C. L. McCrory, J. C. Peters, Inorg. Chem. 2014, 53, 4980−4988
5 H. Sheng, H. Frei, J. Am. Chem. Soc. 2016, 138, 9959−9967
6 a) A. Call, F. Franco, S. Fernandez, N. Kandoth, J. M. Lluis J. Lloret-Fillol, Chem. Sci. 2016, submitted; b) A. Call, Z. Codola, F. Acuna-Pares, J. Lloret-Fillol, Chem. Eur. J. 2014, 20, 6171 – 618
L’oiseau et les enfants : à propos d’une pratique funéraire inédite de Kition
No full textIn 2012, excavations in the Kition-Pervolia Iron Age necropolis led to the discovery of an intact rock-cut tomb, which was used for several burials in the 5th century B. C. Among the 14 individuals buried in the chamber, the remains of two children were found, obviously in association with remains of a goose. This article presents the results of a collaborative study led by archeozoologists (A. G, F. B and L. G. P.), in collaboration with an archaeologist (S. F.) and an anthropologist (N. D.). It addresses the general context of the tomb and of its findings and concentrates on the process and meaning of the goose deposition.Gardeisen Armelle, Fourrier Sabine, Belhaoues F., Delhopital N., Garcia Petit Lluis. L’oiseau et les enfants : à propos d’une pratique funéraire inédite de Kition. In: Cahiers du Centre d'Etudes Chypriotes. Volume 44, 2014. pp. 299-322
Los grandes poljes del sureste de la provincia de Valencia A. Pulido-Bosch et R. Fernadez Rubio, in «Homenatge a Lluis Solei Sabaris», acta geológica hispanica, t. 14, 1979
No full textF. G. Los grandes poljes del sureste de la provincia de Valencia A. Pulido-Bosch et R. Fernadez Rubio, in «Homenatge a Lluis Solei Sabaris», acta geológica hispanica, t. 14, 1979. In: Karstologia : revue de karstologie et de spéléologie physique, n°2, 2e semestre 1983. p. 68
Should Workers Care About Firm Size?
No full textThe question of wage differentials by firm size has been studied for several decades with no commonly accepted explanations for why large firms pay more. In this paper, we reexamine the relationship between firm size and wage outcomes by estimating the returns to unmeasured ability between large and small firms. Our empirical methodology, based on non- linear instrumental variable estimations, allows us to directly estimate the returns to unmeasured ability by firm size and, therefore, to test the two main theories of wage determination proposed to explain the relationship between firm size and wages, namely ability sorting and job screening. We use data from the Survey of Labour and Income Dynamics (SLID), which provides longitudinal information on workers' and firms' characteristics, including establishment and firm size. We find significant differences in the returns to unmeasured ability across firm size. In particular, we find that the returns to unmeasured ability seem to follow a non-linear pattern. The returns to unmeasured ability are significantly higher in medium size (above 500, but below 1000 workers) firms relative to small firms. However, the returns to unmeasured ability are not significantly greater in large firms relative to medium or small firms. Overall, it seems that ability sorting dominates for moves from small to medium size firms in that ability is more productive and, therefore, more rewarded in the latter than the former. On the other hand, when firms become "too large," the monitoring costs hypothesis seems to dominate in that ability is not more rewarded than in smaller firms.Firm Size, Comparative Advantage, Self-selection, Job Screening, Ability Sorting
SARDANES / la COBLA CAMPS AUDIBERT DE PERPIGNAN
No full textComprend : BONICA VALENCIA / F. MAS ROS - EL CELLER D'EN FALCO / Angel PONT MONTANER - CALENDRIA / Pedro PIGOU - EL MEU GAT PETIT / Josef CAPELL - ESTIMADA MONTSERRAT / Ramon VILA - ALEGRA / Lluis COLCHO - LA REINA DEL POBLE NOU / Ramon VILA - APA NANU / Josef CAPELL - PAULINET / F. MAS ROS - BISBALENCA / Laurea' VILA GUINTA - ELS TEUS ULLS / Ramon VILA - L'HEREU ROIG / F. MAS ROSBnF-Partenariats, Collection sonore - BelieveAppartient à l’ensemble documentaire : LangRous1Contient une table des matière
Editorial: Engineered Nanoporous Materials for Chemical Sensors and Biosensors
No full textAbstract not availableAbel Santos, Lluis F. Marsal and Tushar Kumeri
Pancreatic cancer in Europe: Kis-ras gene mutation pattern shows geographical differences
No full text- …
