The Dry Construction Systems on the Rehabilitation of Built Heritage

2016 ◽  
Vol 41 (1) ◽  
pp. 82-87
Author(s):  
Pierluigi De Berardinis ◽  
Chiara Marchionni ◽  
Marianna Rotilio ◽  
Avi Friedman
Keyword(s):  
Low Cost ◽  
Building Site ◽  
Built Heritage ◽  
Construction Methods ◽  
Delivery Times ◽  
Construction Techniques ◽  
Energy Behavior ◽  
Local Construction ◽  
Santa Maria

The dry construction techniques, widely used in past centuries have seen a renewed interest in the last few years. This is due to different reasons such as the new user’s needs for high quality at low cost, the shortage of traditional skilled labor, the need to reduce delivery times and the rising costs of initiating a fabrication plant. Dry construction methods regard the building site as the place of assembly. The quality of the finish products, are guaranteed by a factory controlled production process and reduction to a minimum of on-site work. The building, designed by “unconnected boxes” becomes an “active machine”, capable of ensuring maximum performance for the user. Finally the design of an “open building system” also consists of a set of rules to allow creation of various solutions. The complexity of this modus operandi increases progressively if the intervention is carried out in small historic centres. Therefore, this research aims at presenting a method of work that uses dry construction systems and that has been developed to intervene in the historic contexts damaged by the earthquake that struck the Abruzzo region on April 6, 2009. This method develops a process that aimes at the rehabilitation of the buildings but also at improving their energy behavior while respecting, at the same time, the vernacular values. It is based on a “case by case” approach that starts from an analysis of the context and its local construction techniques, taking into account the peculiarities of each location. The results of this method have been applied to a small village located in the province of L'Aquila called Santa Maria del Ponte.

scholarly journals TYPOLOGY OF HISTORICAL HOUSES IN MUZAFFARID ERA: CASE STUDY OF ARDAKAN CITY, YAZD, IRAN

2020 ◽  
Vol XLIV-M-1-2020 ◽  
pp. 945-952
Author(s):  
M. Dormohamadi
Keyword(s):  
Comparative Method ◽  
General Rule ◽  
Field Studies ◽  
Architectural Production ◽  
Built Heritage ◽  
Construction Methods ◽  
Historical Architecture ◽  
Historical Comparative

Abstract. MOZAFFARIDS established the Mozaffarid dynasty in Yazd, Iran. This era witnessed a development in architectural and decorative features of Yazd buildings. Ardakan, in particular, enjoyed a period of prosperity in the 14th century, which led to a flourishing growth of architectural production. The present article uses a descriptive-analytical and historical-comparative method to investigate the typology of 12 historical houses of Ardakan city in the Muzaffarid era. By using literature review and field studies, four of these houses have been studied in detail in terms of architectural and decorative features and construction methods. The results of the study show that Mozaffarid houses in Ardakan have certain and distinguishable patterns and follow a general rule. Main Iwan as an outstanding feature in Mozaffarid houses, as well as a central courtyard and a Soffeh in front of the Iwan, repeated in all houses and other parts, are formed in their surroundings. With the change in the location of the main Iwan in the northern or southern part of the central courtyard and the fact that whether or not there is a garden, significant differences in organization and the quality of spaces have been made. Mozaffarid houses in Ardakan can be described as two main types each of which can be divided into two subcategories based on the Iwan position. The knowledge of typological characteristics of these historical architecture needs to be gathered to preserve the built heritage and a comprehensive document is essential for the preservation and conservation of the houses.

Effect of Computerized Auditory Training on Speech Perception of Adults With Hearing Impairment

2013 ◽  
Vol 20 (3) ◽  
pp. 91-106 ◽  
Author(s):  
Rachel Pizarek ◽  
Valeriy Shafiro ◽  
Patricia McCarthy
Keyword(s):  
Hearing Loss ◽  
Speech Perception ◽  
Literature Review ◽  
Low Cost ◽  
Experimental Designs ◽  
Auditory Training ◽  
Hearing Impairments ◽  
Communicative Disorders ◽  
And Training

Computerized auditory training (CAT) is a convenient, low-cost approach to improving communication of individuals with hearing loss or other communicative disorders. A number of CAT programs are being marketed to patients and audiologists. The present literature review is an examination of evidence for the effectiveness of CAT in improving speech perception in adults with hearing impairments. Six current CAT programs, used in 9 published studies, were reviewed. In all 9 studies, some benefit of CAT for speech perception was demonstrated. Although these results are encouraging, the overall quality of available evidence remains low, and many programs currently on the market have not yet been evaluated. Thus, caution is needed when selecting CAT programs for specific patients. It is hoped that future researchers will (a) examine a greater number of CAT programs using more rigorous experimental designs, (b) determine which program features and training regimens are most effective, and (c) indicate which patients may benefit from CAT the most.

The system of indicators of the quality of the carbon-carbon composite materials and technologies of their production

2018 ◽  
pp. 127-132
Author(s):  
T. N. Antipova ◽  
D. S. Shiroyan
Keyword(s):  
Composite Material ◽  
Low Cost ◽  
Experimental Studies ◽  
Carbon Matrix ◽  
Carbon Composite ◽  
Optimal Number ◽  
Laboratory Equipment ◽  
Carbon Composite Material ◽  
Carbon Composite Materials

The system of indicators of quality of carbon-carbon composite material and technological operations of its production is proved in the work. As a result of the experimental studies, with respect to the existing laboratory equipment, the optimal number of cycles of saturation of the reinforcing frame with a carbon matrix is determined. It was found that to obtain a carbon-carbon composite material with a low cost and the required quality indicators, it is necessary to introduce additional parameters of the pitch melt at the impregnation stage.

scholarly journals Diagnostic Capabilities of a Smartphone- Based Low-Cost Microscope

2020 ◽  
Vol 6 (3) ◽  
pp. 522-525
Author(s):  
Dorina Hasselbeck ◽  
Max B. Schäfer ◽  
Kent W. Stewart ◽  
Peter P. Pott
Keyword(s):  
Low Cost ◽  
Field Of View ◽  
Parasitic Diseases ◽  
Optical Parameters ◽  
Trade Off ◽  
Resource Limited ◽  
Wide Range ◽  
Diagnostic Applications ◽  
Diagnostic Capabilities

AbstractMicroscopy enables fast and effective diagnostics. However, in resource-limited regions microscopy is not accessible to everyone. Smartphone-based low-cost microscopes could be a powerful tool for diagnostic and educational purposes. In this paper, the imaging quality of a smartphone-based microscope with four different optical parameters is presented and a systematic overview of the resulting diagnostic applications is given. With the chosen configuration, aiming for a reasonable trade-off, an average resolution of 1.23 μm and a field of view of 1.12 mm2 was achieved. This enables a wide range of diagnostic applications such as the diagnosis of Malaria and other parasitic diseases.

scholarly journals Current Trends in Polymer Based Sensors

Chemosensors ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 108
Author(s):  
Giancarla Alberti ◽  
Camilla Zanoni ◽  
Vittorio Losi ◽  
Lisa Rita Magnaghi ◽  
Raffaela Biesuz
Keyword(s):  
Chemical Structure ◽  
Low Cost ◽  
Sensing Applications ◽  
Current Trends ◽  
Manufacturing Methods ◽  
New Devices

This review illustrates various types of polymer and nanocomposite polymeric based sensors used in a wide variety of devices. Moreover, it provides an overview of the trends and challenges in sensor research. As fundamental components of new devices, polymers play an important role in sensing applications. Indeed, polymers offer many advantages for sensor technologies: their manufacturing methods are pretty simple, they are relatively low-cost materials, and they can be functionalized and placed on different substrates. Polymers can participate in sensing mechanisms or act as supports for the sensing units. Another good quality of polymer-based materials is that their chemical structure can be modified to enhance their reactivity, biocompatibility, resistance to degradation, and flexibility.

The Costs and Benefits of Shareholder Democracy: Gadflies and Low-Cost Activism

2020 ◽  
Author(s):  
Nickolay Gantchev ◽  
Mariassunta Giannetti
Keyword(s):  
Low Cost ◽  
Shareholder Value ◽  
Career Concerns ◽  
Costs And Benefits ◽  
Cross Sectional ◽  
Shareholder Proposals ◽  
Active Individual ◽  
Shareholder Democracy ◽  
To Receive

Abstract We show that there is cross-sectional variation in the quality of shareholder proposals. On average, proposals submitted by the most active individual sponsors are less likely to receive majority support, but they occasionally pass if shareholders mistakenly support them and may even be implemented due to directors’ career concerns. While gadfly proposals destroy shareholder value if they pass, shareholder proposals on average are value enhancing in firms with more informed shareholders. We conclude that more informed voting could increase the benefits associated with shareholder proposals.

scholarly journals A Simulation Model of Construction Projects Executed in Random Conditions with the Overlapping Construction Works

2021 ◽  
Vol 13 (11) ◽  
pp. 5795
Author(s):  
Sławomir Biruk ◽  
Łukasz Rzepecki
Keyword(s):  
Simulation Model ◽  
Technological Process ◽  
Construction Projects ◽  
Working Time ◽  
Simulation Studies ◽  
Construction Methods ◽  
The Impact ◽  
Construction Works

Reducing the duration of construction works requires additional organizational measures, such as selecting construction methods that assure a shorter realization time, engaging additional resources, working overtime, or allowing construction works to be performed simultaneously in the same working units. The simultaneous work of crews may affect the quality of works and the efficiency of construction processes. This article presents a simulation model aimed at assessing the impact of the overlap period on the extension of the working time of the crews and the reduction of a repetitive project’s duration in random conditions. The purpose of simulation studies is to provide construction managers with guidelines when deciding on the dates of starting the sequential technological process lines realized by specialized working crews, for sustainable scheduling and organization of construction projects.

scholarly journals ResUHUrge: A Low Cost and Fully Functional Ventilator Indicated for Application in COVID-19 Patients

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6774
Author(s):  
Francisco José Vivas Fernández ◽  
José Sánchez Segovia ◽  
Ismael Martel Bravo ◽  
Carlos García Ramos ◽  
Daniel Ruiz Castilla ◽  
...  
Keyword(s):  
Low Cost ◽  
Pulmonary Ventilation ◽  
Lung Infection ◽  
Health Condition ◽  
Multidisciplinary Research ◽  
Global North ◽  
Severity Of The Disease ◽  
Open Source Hardware ◽  
The University

Although the cure for the SARS-CoV-2 virus (COVID-19) will come in the form of pharmaceutical solutions and/or a vaccine, one of the only ways to face it at present is to guarantee the best quality of health for patients, so that they can overcome the disease on their own. Therefore, and considering that COVID-19 generally causes damage to the respiratory system (in the form of lung infection), it is essential to ensure the best pulmonary ventilation for the patient. However, depending on the severity of the disease and the health condition of the patient, the situation can become critical when the patient has respiratory distress or becomes unable to breathe on his/her own. In that case, the ventilator becomes the lifeline of the patient. This device must keep patients stable until, on their own or with the help of medications, they manage to overcome the lung infection. However, with thousands or hundreds of thousands of infected patients, no country has enough ventilators. If this situation has become critical in the Global North, it has turned disastrous in developing countries, where ventilators are even more scarce. This article shows the race against time of a multidisciplinary research team at the University of Huelva, UHU, southwest of Spain, to develop an inexpensive, multifunctional, and easy-to-manufacture ventilator, which has been named ResUHUrge. The device meets all medical requirements and is developed with open-source hardware and software.

Improving quality of life for dialysis patients through telecare

2000 ◽  
Vol 6 (1_suppl) ◽  
pp. 80-83 ◽  
Author(s):  
Karl A Stroetmann ◽  
Peter Gruetzmacher ◽  
Veli N Stroetmann
Keyword(s):  
Quality Of Life ◽  
Low Cost ◽  
Video Communication ◽  
Daily Routine ◽  
Dialysis Patients ◽  
Home Dialysis ◽  
Service Support ◽  
Initial Results ◽  
Selection Of

Home dialysis can improve the care and quality of life for patients with renal failure. We have explored the possibility of extending home care to more patients needing continuous ambulatory peritoneal dialysis (CAPD) using telemedicine. We tested videoconferencing support for five CAPD patients using low-cost ISDN equipment (128 kbit/s). Initial results indicated that it was possible to integrate video-communication into the daily routine of the clinic and the response from patients was surprisingly positive. Selection of appropriate, affordable technology and the ISDN service support by the telecommunications provider proved to be considerably more difficult than anticipated. The first indications also suggest medical advantages for home teledialysis.

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