Is literacy for all by the year 2000 a feasible target?     

Gabriel Cárceles 《Prospects》1990,20(4):449-459

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Measuring Emotional Appeals in Israeli Election Campaigns     

Marmor-Lavie  Galit; Weimann  Gabriel 《Int. Journal of Public Opinion Research》2006,18(3):318-339

The use of emotions in political campaigns is known and welldocumented. From its earliest days in the Roman Empire or laterin Crusader times to its extensive use by the Nazi regime, politicalpropaganda attempted to seduce and convince, attract and influencetargeted publics by appealing to their emotions. Appeals tofear, hope, pride, anger, and anxiety are frequent in moderncampaigns too. Yet no attempts appear to have been made to developa methodological tool for the objective and systematic identificationof the use of such appeals. This research is based on the design,testing, and validation of a research instrument intended tomeasure quantitatively and comparatively the use of emotionalappeals in two Israeli election campaigns (1996 and 1999). Italso reports findings from an application of the new measureto test specific hypotheses on the use of emotional appealsacross campaigns and parties.  相似文献   

Looking for Opinion Leaders: Traditional vs. Modern Measures in Traditional Societies   总被引：1，自引：0，他引：1  

Weimann  Gabriel; Tustin  Deon Harold; van Vuuren  Daan; Joubert  J. P. R. 《Int. Journal of Public Opinion Research》2007,19(2):173-190

Since the introduction of the opinion leadership conceptualization,both practitioners and academics have been keenly interestedin its applicability in modern society. Numerous studies havebeen conducted to identify potential opinion leaders, learnof the characteristics distinguishing them from their ‘followers,’and understand how they exert their personal influence to changeopinions and behaviors of the masses. Despite the growing researchon opinion leadership, the identification of appropriate opinionleaders for practical purposes continues to be a challenge.Several methods were used to identify opinion leaders. The existenceof numerous methods and their use in various societies, socialsettings and cultures and the variance across domains of opinionleadership raises questions on the applicability and validityof the modern, advanced measures when applied to other socialsettings. The present study is in fact a first attempt to applythe modern personality strength (PS) scale to a traditionalcommunity. The PS scale was found to be an efficient, valid,and useful instrument to identify opinion leaders in numerousstudies. However, it was always used, tested, and validatedin Western societies (e.g., Germany, USA, and Israel). Whenwe applied the method in the Skukuza community, a small villagein South Africa, the findings revealed the inapplicability ofthe scale in a traditional community. Several factors are suggestedto explain the futility of the PS scale in a traditional society.  相似文献   

Die Klasse an die Universit?t, die Masse an die anderen Hochschulen?     

Dr. Jochen Kramer  Prof. Dr. Gabriel Nagy  Prof. Dr. Ulrich Trautwein  Prof. Dr. Oliver L??dtke  Prof. Dr. Kathrin Jonkmann  Prof. Dr. Kai Maaz  Prof. Dr. Rainer Treptow 《Zeitschrift für Erziehungswissenschaft》2011,14(3):465-487

In Germany, different types of university-level institutions are available for tertiary education: traditional universities (Universit?ten) and??since the 1970s??universities of applied science (Fachhochschulen) as well as universities of cooperative education (Berufsakademien). The present study investigates differences in key areas related to students?? academic choices and success: do students at different types of university differ significantly in terms of cognitive performance, personality or social background? We compared N?=?1.230 students at traditional universities, universities of applied science, and universities of cooperative education (Baden-W??rttemberg Cooperative State University) on the basis of a large scale longitudinal study in the German federal state of Baden-W??rttemberg. Students of the different university types differed significantly in all three key areas (cognitive performance, personality, and social background) within the fields of technical sciences and economics. We determine the relative importance of these key areas for differences between university types and we discuss the implications of our findings.  相似文献   

Effect of extended training on generalization of latent inhibition: an instance of perceptual learning     

Rodríguez G  Alonso G 《Learning & behavior》2011,39(1):79-86

Four experiments examined generalization of latent inhibition (LI) as a function of the length of preexposure in a conditioned taste aversion procedure with rats. Experiment 1 showed that one or four nonreinforced presentations of a flavor compound (BX) retarded subsequent conditioning to another compound (AX). However, after eight presentations of BX, conditioning to AX occurred at the same rate as with no preexposure. These results indicate that generalization of LI decreased as the length of preexposure to BX increased. Experiment 2 replicated this effect of reducing generalization, as well as demonstrating that LI actually increased as the length of preexposure to AX increased. Experiment 3 extended the generality of the effect to a procedure in which both BX and AX were preexposed. Experiment 4 demonstrated a similar reducing-generalization effect when generalization of LI from BX to X was assessed. All of these data are consistent with the notion that prolonged preexposure to BX enhances its discriminability. Different learning mechanisms that might be responsible for this perceptual learning effect are discussed.  相似文献   

Sense,Nonsense, and Violence: Levinas and the Internal Logic of School Shootings          下载免费PDF全文

Gabriel Keehn  Deron Boyles 《Educational theory》2015,65(4):441-458

Utilizing a broadly Levinasian framework, specifically the interplay among his ideas of possession, violence, and negation, Gabriel Keehn and Deron Boyles illustrate how the relatively recent sharp turn toward the hypercorporatized school and the concomitant transition of the student from simple (potential) customer to a type of hybrid consumer/consumable has rendered it more difficult for students to see themselves as engaged in any type of serious ethical relationship with those around them. To be unable to see their peers as Others, in other words, makes it easier for students to perpetrate a specific type of violence against them. Keehn and Boyles suggest that current popular policy responses to gun violence in schools (such as increased security, zero‐tolerance policies, antibullying initiatives, and mental‐health policy revisions) are approaches that, at best, fail to address the root cause of gun violence in schools and, at worst, are themselves branches of that root: namely, a homogenizing corporatism that creates an ethical vacuum in the schoolhouse.  相似文献   

Romanian scholarly productivity: recent history and recommendations     

Bob Ives  Gabriel Bādescu 《高等教育研究与发展》2015,34(5):926-941

Romanian scholars, and others, have decried the quality and quantity of scholarly productivity from Romania. However, Romanian scholars face challenges of both tradition and resources as they try to westernize their higher education system. We analyzed data from two sources to compare Romanian scholarly productivity to that of other countries from Central and Eastern Europe that have similar histories, as well as to worldwide publication rates. We found that Romanian scholarly productivity is weak compared to other countries in psychology, sociology, environmental sciences, linguistics, geology and medicine. However, Romanian scholarly productivity has been comparable to other countries in agriculture and computer sciences. We also found that Romanian scholarly productivity has shown gains in engineering and economics compared to other countries over a 20-year period. We conclude this paper with research-based recommendations for improving scholarly productivity.  相似文献   

In vitro diagnostic company recalls and medical laboratory practices: an Italian case     

Gabriel Lima-Oliveira  Giuseppe Lippi  Gian Luca Salvagno  Giorgio Brocco  Gian Cesare Guidi 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2015,25(2):273-278

Introduction

In vitro human diagnostic (IVD) company recalls are a common practice aimed to either minimize a potential error or eliminate an existing failure. In this case report, we aim to provide a critical analysis of a recent IVD recall and to provide a practical framework about what to do when an IVD company recalls product(s) based on the International Organization for Standardization - ISO 15189:2012 standard.

Case report

In 2014, Abbott Laboratories® (Green Oaks, IL) published an urgent field safety notice regarding a product recall (Architect Intact parathyroid hormone (PTH) Assay List Number 8K25) with immediate action required. The IVD company explained the reasons for the recall as follows: i) Abbott has confirmed that a performance shift in the Architect Intact PTH assay has the potential to generate falsely elevated results on patient samples; ii) results generated with impacted lots may demonstrate a positive shift relative to those generated with previous reagent and/or calibrator lots. This issue may also impact established Architect Intact PTH reference ranges; iii) the magnitude of shift averages approximately 13% to 45%; iv) Abbott Architect Intact PTH controls do not detect the shift; and v) all current reagent, calibrator, and control inventory are impacted. The recall could have resulted in ~40,000 inaccurate laboratory tests reported by 18 laboratories from Italy (Lombardy region).

Conclusion

IVD company recalls have a serious impact on the patient safety and require a thorough investigation and responsible approach to minimize the possible damage. Medical laboratories accredited according to the ISO 15189 standard have procedures in place to manage such situations and ensure that patient safety is maintained when such recalls are issued.Key words: clinical laboratory techniques, patient safety, laboratory variability, reference standards, quality control, parathyroid hormone  相似文献   

DNA-library assembly programmed by on-demand nano-liter droplets from a custom microfluidic chip     

Uwe Tangen  Gabriel Antonio S. Minero  Abhishek Sharma  Patrick F. Wagler  Rafael Cohen  Ofir Raz  Tzipy Marx  Tuval Ben-Yehezkel  John S. McCaskill 《Biomicrofluidics》2015,9(4)

Nanoscale synthetic biology can benefit from programmable nanoliter-scale processing of DNA in microfluidic chips if they are interfaced effectively to biochemical arrays such as microwell plates. Whereas active microvalve chips require complex fabrication and operation, we show here how a passive and readily fabricated microchip can be employed for customizable nanoliter scale pipetting and reaction control involving DNA. This recently developed passive microfluidic device, supporting nanoliter scale combinatorial droplet generation and mixing, is here used to generate a DNA test library with one member per droplet exported to addressed locations on microwell plates. Standard DNA assembly techniques, such as Gibson assembly, compatible with isothermal on-chip operation, are employed and checked using off-chip PCR and assembly PCR. The control of output droplet sequences and mixing performance was verified using dyes and fluorescently labeled DNA solutions, both on-chip and in external capillary channels. Gel electrophoresis of products and DNA sequencing were employed to further verify controlled combination and functional enzymatic assembly. The scalability of the results to larger DNA libraries is also addressed by combinatorial input expansion using sequential injection plugs from a multiwell plate. Hence, the paper establishes a proof of principle of the production of functional combinatorial mixtures at the nanoliter scale for one sequence per well DNA libraries.  相似文献   

Two-dimensional spatial manipulation of microparticles in continuous flows in acoustofluidic systems     

Lu Gao  C. Wyatt Shields  IV  Leah M. Johnson  Steven W. Graves  Benjamin B. Yellen  Gabriel P. López 《Biomicrofluidics》2015,9(1)

We report a modeling and experimental study of techniques to acoustically focus particles flowing through a microfluidic channel. Our theoretical model differs from prior works in that we solve an approximate 2-D wave transmission model that accounts for wave propagation in both the solid and fluid phases. Our simulations indicate that particles can be effectively focused at driving frequencies as high as 10% off of the resonant condition. This conclusion is supported by experiments on the acoustic focusing of particles in nearly square microchannels, which are studied for different flow rates, driving frequencies and placements of the lead zirconate titanate transducer, either underneath the microchannel or underneath a parallel trough. The relative acoustic potential energy and the resultant velocity fields for particles with positive acoustic contrast coefficients are estimated in the 2-D limit. Confocal microscopy was used to observe the spatial distribution of the flowing microparticles in three dimensions. Through these studies, we show that a single driving frequency from a single piezoelectric actuator can induce the 2-D concentration of particles in a microchannel with a nearly square cross section, and we correlate these behaviors with theoretical predictions. We also show that it is possible to control the extent of focusing of the microparticles, and that it is possible to decouple the focusing of microparticles in the vertical direction from the lateral direction in rectangular channels with anisotropic cross sections. This study provides guidelines to design and operate microchip-based acoustofluidic devices for precise control over the spatial arrangement of microparticles for applications such as flow cytometry and cellular sorting.  相似文献