A combination of NDT methods for the restoration of monumental façades: The case study of Monte di Pietà (Naples,Italy)     

Gian Piero Lignola  Gaetano Manfredi 《Journal of Cultural Heritage》2010,11(3):360-364

The paper focuses on an interdisciplinary research project concerning the preservation of the XVII century monumental building of Monte di Pietà in Naples, Italy. The building underwent a series of restorations being the structural walls affected by humidity and cracks. The importance of this monumental building in the historical city center of Naples led to design an extensive surveying program to provide the designers of strengthening with a detailed investigation of the geometry of the entire structure, and particularly of the entrance façade, with great details on several materials, thicknesses and restraints. A preliminary investigation was performed on the historical phases of this monumental building to have a clear knowledge of its vicissitudes, and then in situ structural assessment included 3D laser scanner techniques probing radar, in situ stress measures. This surveying phase was crucial especially for the subsequent Finite Elements modeling (F.E.M.) of the façade. The scope of the numerical refined analyses was to evaluate the state of stress in the structural elements of the façade putting in evidence structural ‘weak points’ and finally to design a retrofit intervention having a detailed map of the ‘intervention areas’. The theoretical damage assessment has been compared with on-site assessment and in situ stress measures. The damage primarily concerned the entrance façade and its valuable decorations. Furthermore, the basic principles for the design of the strengthening have been discussed.  相似文献   

Preanalytical management: serum vacuum tubes validation for routine clinical chemistry     

Lima-Oliveira G  Lippi G  Salvagno GL  Montagnana M  Picheth G  Guidi GC 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2012,22(2):180-186

Introduction

The validation process is essential in accredited clinical laboratories. Aim of this study was to validate five kinds of serum vacuum tubes for routine clinical chemistry laboratory testing.

Materials and methods:

Blood specimens from 100 volunteers in five diff erent serum vacuum tubes (Tube I: VACUETTE^®, Tube II: LABOR IMPORT^®, Tube III: S-Monovette^®, Tube IV: SST^® and Tube V: SST II^®) were collected by a single, expert phlebotomist. The routine clinical chemistry tests were analyzed on cobas^® 6000 module. The significance of the diff erences between samples was assessed by paired Student’s t-test after checking for normality. The level of statistical significance was set at P < 0.005. Finally, the biases from Tube I, Tube II, Tube III, Tube IV and Tube V were compared with the current desirable quality specifications for bias (B), derived from biological variation.

Results and conclusions:

Basically, our validation will permit the laboratory or hospital managers to select the brand’s vacuum tubes validated according him/her technical or economical reasons, in order to perform the following laboratory tests: glucose, total cholesterol, high density lipoprotein-cholesterol, triglycerides, total protein, albumin, blood urea nitrogen, uric acid, alkaline phosphatise, aspartate aminotransferase, gamma-glutamyltransferase, lactate dehydrogenase, creatine kinase, total bilirubin, direct bilirubin, calcium, iron, sodium and potassium. On the contrary special attention will be required if the laboratory already performs creatinine, amylase, phosphate and magnesium determinations and the quality laboratory manager intend to change the serum tubes. We suggest that laboratory management should both standardize the procedures and frequently evaluate the quality of in vitro diagnostic devices.  相似文献   

A concurrent assessment of the positive and negative properties of a signaled shock schedule     

John Harsh  Pietro Badia 《Learning & behavior》1974,2(3):168-172

A choice and a conditioned suppression procedure were used to assess concurrently the positive and negative properties of stimuli within a signaled shock schedule, Occasional shocks were presented to Ss responding on a variable-interval food schedule. Ss could choose whether shocks occurred alone or whether they were preceded by a 1-min signal. All Ss chose the signaled shock condition over the unsignaled one, even though food reinforced responding in the presence of the signal was suppressed. Rate of responding for food varied across stimulus conditions, with the lowest rate in the presence of the signal and the highest rate in its absence. An intermediate rate occurred under the unsignaled shock schedule. A safety analysis was applied to the data.  相似文献   

Reward systems,faculty alienation,and militancy: Academic dilemmas in the middle of the academic procession     

Dr. David Kamens  Gian Sarup 《Research in higher education》1978,8(3):227-240

The study examines the effect of alienation resulting from discrepancies between departmental goals and reward policies on faculty attitudes toward collective bargaining. Analysis of structural data derived from official records of a large, public university and of attitudinal data consisting of faculty responses to a survey, shows that alienation from reward systems has a significant independent influence on faculty attitudes towards collective action. The observed trends in militancy are interpreted in terms of institutional context and framework of unionization movement.  相似文献   

Signal duration and choosing between signaled and unsignaled reward     

Kathleen A. Ryan  Pietro Badia 《Learning & behavior》1982,10(1):55-60

The effects of signal duration when choosing between signaled and unsignaled response-independent reinforcers were examined in two experiments. In Experiment 1, albino rats were given a choice between signaled and unsignaled food delivered on variable-time 60-sec schedules using a 20-sec signal. All subjects preferred the signaled schedule at a level comparable to that reported in an earlier study using a 5-sec signal. Experiment 2 presented six rats with a direct choice between a 5-sec and a 20-sec signal condition, and three rats with a choice between a 1.5-sec and a 5-sec signal duration. Subjects preferred the 20-sec signal over the 5-sec signal, but no pReference was found with the 1.5-sec vs. a 5-sec signal. Current theoretical views, such as delay reduction and behavioral competition, are considered.  相似文献   

Understanding Roles and Functions of Academic Libraries as Innovation Intermediaries within the Service-Dominant Logic Perspective: An Australian Case Study     

Gian Luca Casali  Mirko Perano  Tindara Abbate 《图书馆管理杂志》2017,57(2):135-150

This study defines the academic library as an innovation intermediary that under the service-dominant logic perspective has a role of co-creator of value instead of a traditional service provider focused on collecting and exchanging knowledge. Innovation intermediaries develop a number of roles and functions to stimulate knowledge creation and transfer by supporting interactions and collaborations among multiple parties. As result, 2×2 Matrix was created to position each library's service based on its unique combination of necessary innovation roles and functions. A single case study focused on a university library and highlighted the existence of two different types of intermediaries: generalist and specialist.  相似文献   

Role of affective self-regulatory efficacy in diverse spheres of psychosocial functioning   总被引：1，自引：0，他引：1  

Bandura A  Caprara GV  Barbaranelli C  Gerbino M  Pastorelli C 《Child development》2003,74(3):769-782

This prospective study with 464 older adolescents (14 to 19 years at Time 1; 16 to 21 years at Time 2) tested the structural paths of influence through which perceived self-efficacy for affect regulation operates in concert with perceived behavioral efficacy in governing diverse spheres of psychosocial functioning. Self-efficacy to regulate positive and negative affect is accompanied by high efficacy to manage one's academic development, to resist social pressures for antisocial activities, and to engage oneself with empathy in others' emotional experiences. Perceived self-efficacy for affect regulation essentially operated mediationally through the latter behavioral forms of self-efficacy rather than directly on prosocial behavior, delinquent conduct, and depression. Perceived empathic self-efficacy functioned as a generalized contributor to psychosocial functioning. It was accompanied by prosocial behavior and low involvement in delinquency but increased vulnerability to depression in adolescent females.  相似文献   

Classroom discussion and individual problem-solving in the teaching of history: Do different instructional approaches affect interest in different ways?     

Laura Del Favero  Pietro Boscolo  Giulio Vidotto  Marco Vicentini 《Learning and Instruction》2007,17(6):635-657

In this study, 100 Italian eighth graders were divided into two groups to compare the effects of two instructional interventions – the first based on problem-solving through discussion, the second on individual problem-solving – on students' learning of two historical topics (World War I and the economic boom), interest and self-perception of competence in history. The intervention based on discussion produced greater situational interest and understanding of the historical inquiry. The topic of World War I turned out to be an effective source of situational interest. Structural equation models showed that situational interest elicited by the use of discussion and by World War I impacted both on students' individual interest and on self-perception of competence in history.  相似文献   

Writing and conceptual change. What changes?     

Mason  Lucia  Boscolo  Pietro 《Instructional Science》2000,28(3):199-226

This study was focused on elementary school students'processes of scientific understanding within aclassroom environment characterized as a community ofdiscourse. In particular, it explored the role ofwritten discourse both on the plane of knowledgedevelopment and the conceptualization and evaluationof the writing activity itself. The purposes of thestudy were: (a) to see whether students could use writingas a means to express and compare ideas, reason andreflect on them in the process of scientificunderstanding; (b) to see whether writing in the serviceof learning facilitated the understanding of the newtopic through conceptual change; (c) to see whetherwriting affected the conceptualization of the writingactivity itself. Thirty-six fourth graders divided intwo groups, experimental (writing) and control(no-writing), were involved in the implementation ofcurriculum units on plants, whose target concept wasphotosynthesis. The findings show that in theexperimental group the students reached a betterconceptual understanding of the target concept andmore advanced metaconceptual awareness of the changesin their own knowledge structures. Moreover, theconceptualization of the writing activity seemed tochange as well to some extent as writing in aconceptual change process affected the ways learnersviewed some functions of it.  相似文献   

Handwriting,spelling, and narrative competence in the fictional stories of Italian primary-school children     

Longobardi  Emiddia  Spataro  Pietro  Pizzicannella  Emiliano 《European Journal of Psychology of Education - EJPE》2018,33(2):277-293

European Journal of Psychology of Education - Previous studies with English-speaking children showed that handwriting and spelling abilities played a critical role in the development of writing...  相似文献