Електронни руски библиотеки и образователни уеб сайтове

Доклад, поместен в сборника на Националната конференция "Образованието в информационното общество", Пловдив, октомври, 2006 г.

Human capital:theoretical and empirical insights

There is nothing more difficult to plan, more Doubtful of success, nor more dangerous to manage Than the creation of a new system. For the initiator has the enmity of all who would Profit by the preservation of the old system, and Merely lukewarm defenders in those who should gain By the new one. N. Machiavelli (1513) Abstract: The purpose of this paper is twofold. First, we want to challenge the notion of "human capital" as "education, training and work experience" and suggest that it is the "quality of the workforce" that matters, here defined as the set of characteristics that allow workers to function in a specific institutional and historical context. Our main conclusion is that the quality of the workforce is affected by the institutional environment where the workers live and that therefore it can vary across countries and institutional contexts. Second, we want to show the empirical relevance of this last point by testing the extent to which the quality of institutions (here proxied by the governance indicators of Kaufmann etal. (2007)) can affect the quality of the workforce (proxied by the percentage of the working age population registered in a lifelong learning program). Our empirical analysis is conducted on a data-set of 11 European countries observed over the period 1996-2006. The results indicate that countries with better governance indicators are also endowed with a more qualified workforce. © 2011 American Journal of Economics and Sociology, Inc.

Neumann versus Leontief. Két modell – két gazdaságkép (Neumann vs Leontief. Two models, two approaches to the economy)

A szerző a tisztán elméleti célokra kifejlesztett Neumann-modellt és a gyakorlati alkalmazások céljára kifejlesztett Leontief-modellt veti össze. A Neumann-modell és a Leontief-modell éves termelési periódust feltételező, zárt, stacionárius változatának hasonló matematikai struktúrája azt a feltételezést sugallja, hogy az utóbbi a Neumann-modell sajátos eseteként értelmezhető. Az egyes modellek közgazdasági tartalmát és feltevéseit részletesen kibontva és egymással összevetve a szerző megmutatja, hogy a fenti következtetés félrevezető, két merőben különböző modellről van szó, nem lehet az egyikből a másikat levezetni. Az ikertermelés és technológiai választék lehetősége a Neumann-modell elengedhetetlen feltevése, az éves termelési periódus feltevése pedig kizárja folyam jellegű kibocsátások explicit figyelembevételét. Mindezek feltevések ugyanakkor idegenek a Leontief-modelltől. A két modell valójában egy általánosabb állomány–folyam jellegű zárt, stacionárius modell sajátos esete, méghozzá azok folyamváltozókra redukált alakja. _____ The paper compares the basic assumptions and methodology of the Von Neumann model, developed for purely abstract theoretical purposes, and those of the Leontief model, designed originally for practical applications. Study of the similar mathematical structures of the Von Neumann model and the closed, stationary Leontief model, with a unit length of production period, often leads to the false conclusion that the latter is just a simplified version of the former. It is argued that the economic assumptions of the two models are quite different, which makes such an assertion unfounded. Technical choice and joint production are indispensable features of the Von Neumann model, and the assumption of unitary length of production period excludes the possibility of taking service flows explicitly into account. All these features are completely alien to the Leontief model, however. It is shown that the two models are in fact special cases of a more general stock-flow stationary model, reduced to forms containing only flow variables.

Restaurant Industry Perspectives on Pro-social Rule Breaking: Intent versus Action

The resounding message extracted from the service literature is that employees serve pivotal functions in the overall guest experience. This is of course due to the simultaneous delivery of personalized service provision with resultant consumption of those services. This simultaneous delivery and consumption cycle is at times challenged by a perceived desire to accommodate guest request that may violate, to a greater or lesser degree, an organizational rule. This is important to note because increased interactions with customers enable frontline employees to have a better sense of what customers want from the company as well as from the company itself (Bitner, et al, 1994). With that platform established, then why are some employees willing to break organizational rules and risk disciplinary action to better service a customer? This study examines the employee personality, degree of autonomy, job meaning, and co-worker influence on an employee's decision to break organizational rules. The results of this study indicate that co-worker influence exerted a minimal influence on employee decision to break rules while the presence of societal consciousness exerted a much stronger influence. Women reported that they were less likely to engage in rule divergence, and significant correlations were present when filtered by years in current position, and years in the industry.

The Beacon, February 23, 2011

Vol. 22, Issue 18, 8 pages

Bola na rede: uma análise das estratégias comunicacionais de empresas esportivas no ambiente digital conectado

O uso das mídias sociais digitais como meio de divulgação de produtos, serviços e conteúdos organizacionais tem crescido nas últimas décadas e ganhou especial atenção nos planejamentos de comunicação organizacional e nos estudos acadêmicos sobre o tema. Nesse sentido, o segmento de empresas esportivas atua com destaque, despertando o interesse e a empatia do consumidor. Por meio de análise bibliográfica e estudo empírico, esta pesquisa teve como objetivo investigar as ações de comunicação mercadológica do segmento esportivo no ambiente digital conectado, através de um estudo de caso múltiplo das empresas Nike e Adidas. Para a obtenção dos dados, foram realizadas entrevistas em profundidade com profissionais do mercado e aplicado um protocolo de investigação de redes sociais digitais nos perfis das duas empresas. Após a coleta dos dados, estes foram analisados à luz das teorias estudadas nos capítulos iniciais (que abordaram temas como comunicação organizacional, comunicação digital, esporte e comunicação esportiva), e foi possível concluir, entre outros pontos, que, no universo do segmento esportivo, a comunicação digital conectada não prioriza o diálogo com seus públicos de interesse, sendo essencialmente baseada na divulgação unilateral de conteúdos, nem tampouco explora a potencialidade de cada uma das plataformas digitais disponíveis, replicando conteúdos em diferentes ambientes. Ficou evidente, também, o uso dos elementos constituintes do universo esportivo como argumentos estratégicos de comunicação das empresas, decorrente de sua capacidade de estreitar os laços relacionais com os públicos de interesse, por meio de seus apelos simbólicos de fácil identificação social.

A Therapeutic Antibody for Cancer, Derived from Single Human B Cells.

Some patients with cancer never develop metastasis, and their host response might provide cues for innovative treatment strategies. We previously reported an association between autoantibodies against complement factor H (CFH) and early-stage lung cancer. CFH prevents complement-mediated cytotoxicity (CDC) by inhibiting formation of cell-lytic membrane attack complexes on self-surfaces. In an effort to translate these findings into a biologic therapy for cancer, we isolated and expressed DNA sequences encoding high-affinity human CFH antibodies directly from single, sorted B cells obtained from patients with the antibody. The co-crystal structure of a CFH antibody-target complex shows a conformational change in the target relative to the native structure. This recombinant CFH antibody causes complement activation and release of anaphylatoxins, promotes CDC of tumor cell lines, and inhibits tumor growth in vivo. The isolation of anti-tumor antibodies derived from single human B cells represents an alternative paradigm in antibody drug discovery.

Potential Cost-effectiveness of Early Identification of Hospital-acquired Infection in Critically Ill Patients.

RATIONALE: Limitations in methods for the rapid diagnosis of hospital-acquired infections often delay initiation of effective antimicrobial therapy. New diagnostic approaches offer potential clinical and cost-related improvements in the management of these infections. OBJECTIVES: We developed a decision modeling framework to assess the potential cost-effectiveness of a rapid biomarker assay to identify hospital-acquired infection in high-risk patients earlier than standard diagnostic testing. METHODS: The framework includes parameters representing rates of infection, rates of delayed appropriate therapy, and impact of delayed therapy on mortality, along with assumptions about diagnostic test characteristics and their impact on delayed therapy and length of stay. Parameter estimates were based on contemporary, published studies and supplemented with data from a four-site, observational, clinical study. Extensive sensitivity analyses were performed. The base-case analysis assumed 17.6% of ventilated patients and 11.2% of nonventilated patients develop hospital-acquired infection and that 28.7% of patients with hospital-acquired infection experience delays in appropriate antibiotic therapy with standard care. We assumed this percentage decreased by 50% (to 14.4%) among patients with true-positive results and increased by 50% (to 43.1%) among patients with false-negative results using a hypothetical biomarker assay. Cost of testing was set at $110/d. MEASUREMENTS AND MAIN RESULTS: In the base-case analysis, among ventilated patients, daily diagnostic testing starting on admission reduced inpatient mortality from 12.3 to 11.9% and increased mean costs by $1,640 per patient, resulting in an incremental cost-effectiveness ratio of $21,389 per life-year saved. Among nonventilated patients, inpatient mortality decreased from 7.3 to 7.1% and costs increased by $1,381 with diagnostic testing. The resulting incremental cost-effectiveness ratio was $42,325 per life-year saved. Threshold analyses revealed the probabilities of developing hospital-acquired infection in ventilated and nonventilated patients could be as low as 8.4 and 9.8%, respectively, to maintain incremental cost-effectiveness ratios less than $50,000 per life-year saved. CONCLUSIONS: Development and use of serial diagnostic testing that reduces the proportion of patients with delays in appropriate antibiotic therapy for hospital-acquired infections could reduce inpatient mortality. The model presented here offers a cost-effectiveness framework for future test development.

Endogenous Risk Perception, Geospatial Characteristics and Temporal Variation in Hurricane Evacuation Behavior

The main focus of this thesis was to gain a better understanding about the dynamics of risk perception and its influence on people’s evacuation behavior. Another major focus was to improve our knowledge regarding geo-spatial and temporal variations of risk perception and hurricane evacuation behavior. A longitudinal dataset of more than eight hundred households were collected following two major hurricane events, Ivan and Katrina. The longitudinal survey data was geocoded and a geo-spatial database was integrated to it. The geospatial database was composed of distance, elevation and hazard parameters with respect to the respondent’s household location. A set of Bivariate Probit (BP) model suggests that geospatial variables have had significant influences in explaining hurricane risk perception and evacuation behavior during both hurricanes. The findings also indicated that people made their evacuation decision in coherence with their risk perception. In addition, people updated their hurricane evacuation decision in a subsequent similar event.

Pauli Orosii ... Aduersus paganos (quos vocant) historiarum libri septem : nunc denuo cum manu scriptis exemplaribus aliquot collati, dilige[n]tiusq[ue] multo quàm antehac vnquam excusi : cum indice rerum in ipsis contentarum copiosissimo.

Marca tip. en port.

Fadrique Álvarez de Toledo, II Duque de Alba y su inventario de libros (1531): Una biblioteca patrimonial

Fadrique Álvarez de Toledo, que nació hacia 1460 y murió en 1531, lidera en Castilla el linaje de la casa de Alba en el tránsito de la Edad Media al Renacimiento. Primo carnal de Fernando el Católico, y colaborador íntimo de los Reyes, desarrolla una amplia labor de mecenazgo artístico y literario, de la cual son ejemplos relevantes los apoyos a poetas como Juan del Encina, Juan Boscán o Garcilaso de la Vega. A pesar de esta actividad, la crítica no se ha ocupado con detalle de este personaje por haberle eclipsado un tanto su nieto, el Gran Duque de Alba. Este artículo reproduce el inventario de la biblioteca de Don Fadrique (formado por los libros que fueron catalogados a su muerte), inédito hasta ahora y que nos muestra una rica biblioteca patrimonial de ciento ochenta y seis obras. Entre los libros religiosos encontramos biblias, tratados de oración y libros de horas; se hallan también algunos títulos indispensables de las tradiciones franciscana y dominica, que nos muestran a un personaje interesado en las nuevas corrientes devocionales de finales del siglo XV, en el escolasticismo y en las mujeres santas y visionarias del Medievo.

La fijación léxica en el "Corpus diacrónico del español del Reino de Granada (CORDEREGRA)"

El estudio de las combinaciones léxicas según su grado de fijación y su distinción en combinaciones libres, colocaciones y locuciones ha sido realizado desde la perspectiva sincrónica. Planteamos la posibilidad de aplicar las pautas para distinguir estos tipos de estructuras en materiales de tipo diacrónico. Concretamente, nos basamos en los documentos que componen el Corpus del Español del Reino de Granada (CORDEREGRA) para valorar los materiales de este corpus histórico-lingüístico y comprobar si los criterios sincrónicos se pueden aplicar al estudio de documentos de otros siglos.