scholarly journals Analysis of Energy Characteristics of Rice and Coffee Husks Blends

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Cuthbert F. Mhilu
Keyword(s):  
Thermogravimetric Analysis ◽  
First Generation ◽  
Point Of View ◽  
Rice Husks ◽  
Material Degradation ◽  
Energy Characteristics ◽  
Hemicellulose Degradation ◽  
Active Interest ◽  
Retention Characteristics ◽  
Work Done

Production of first generation biofuels using food crops is under criticism over sustainability issues on food security. Tanzania is showing active interest in developing second generation biofuels to deal with some of such issues, especially from the feedstock point of view. This paper reports work done to determine energy characteristics of rice and coffee husks. The results show that coffee husks have better energy quality than rice husks, while heating values of coffee are 18.34 MJ/kg and 13.24 MJ/kg for rice husk. Thermogravimetric analysis made for coffee husks blended rice husks at a ratio of 75 : 25% vol. show better material degradation characteristics yielding low residual mass of 23.65%, compared to 26.50% of char and ash remaining in pure rice husks. Derivative thermogravimetric analysis shows comparable hemicellulose degradation peak values of −11.5 and −11.2 and cellulose −3.20 and −2.90 in pure coffee and rice husks, respectively. In coffee and rice husks blends, substantial reductions of hemicellulose and cellulose peaks were observed. Use of coffee and rice husks blends applying high temperature gasification would reduce the latter’s flammability, while increasing its flame retention characteristics, hence offering opportunities for production of clean syngas in a sustainable manner.

The narrative epidemiology of L'Aquila 2009 earthquake

2012 ◽  
Vol 21 (1) ◽  
pp. 13-21 ◽  
Author(s):  
M. Casacchia ◽  
R. Pollice ◽  
R. Roncone
Keyword(s):  
Natural Disasters ◽  
Stress Disorder ◽  
Acute Stress ◽  
Narrative Medicine ◽  
Point Of View ◽  
Traumatic Experience ◽  
Post Traumatic Stress ◽  
13Th Century ◽  
Surrounding Areas ◽  
Work Done

The authors describe their experience working and living in L'Aquila, where at 3.32 a.m., early in the morning of 6 April 2009, a 6.3 Richter magnitude earthquake caused serious damages to this 13th century town (with a population of 72 000 and a health district of 103 788), in the mountainous Abruzzo region and to several medieval hill villages in the surrounding areas: 309 residents were killed, over 1600 were injured, 66 000 residents were displaced, and, the centre of L'Aquila, the main historical and artistic centre of Abruzzo, was totally destroyed.Here is described the work done at the Psychiatric Unit of the General Hospital of L'Aquila and in the University. The Authors report the incidence rate of Acute Stress Disorder (ASD) in help-seekers (full ASD 4.9%, and partial ASD 39.3%), and of post-traumatic stress disorder (PTSD) found in different samples of population (range 12–37.5). The authors express their consideration about which real-world variables can reflect the population distress and the naturalistic process of recovery in such natural disasters. After the earthquake they hypothesize that a lot of residents had found their way to recover through ‘writing, telling the story’, by analogy with what narrative medicine asserts, thus estimating the positive effect of ‘emotional disclosure’ on health. A large number of materials (books, web-blogs, videos) were produced by residents and a database of memories was implemented. The suffering and struggle to recover in the aftermaths of a traumatic experience often yields remarkable transformations and positive growth. From this point of view, the authors underline the increased virtual relationships of residents through Facebook, to cope with the loss of previous social relationships, to get information about recreational opportunities, or to get organized for public events, despite their displacement. Many collective demonstrations were organized and showed the will to actively participate to the processes of reconstruction of the civil and scientific life of the town. The authors stress the need to prevent natural disasters, instead of preventing mental disorders following natural disasters, reporting that seven Italian seismologists and scientists are on trial for manslaughter, accused to have failed to evaluate the true risks of L'Aquila earthquake.

scholarly journals Experimental Study of Non-Compatible Collision of Rail and Road Vehicle

2014 ◽  
Vol 26 (6) ◽  
pp. 459-466 ◽  
Author(s):  
Hedvika Kovandová ◽  
Robert Válka
Keyword(s):  
Experimental Study ◽  
First Generation ◽  
Point Of View ◽  
Passive Safety ◽  
Road Vehicles ◽  
Testing Laboratory ◽  
Level Crossings ◽  
Passenger Car ◽  
Rail Vehicles ◽  
Experimental Vehicle

The paper deals with safety of transport from the point of view of an important social problem, which are accidents at railroad (including tramway) and road level crossings, which means compatibility of rail and road vehicles crash. The scale of such accidents can be very wide. Regarding the statistics and frequency of accidents particularly at railway level crossings and tramway level crossings, a collision simulating the collision of a tram and passenger car was experimentally carried out. The experiment took place at the site of testing laboratory of Rail Vehicles Research Institute in Cerhenice. The experiment was conducted with a passenger car Škoda Superb of the first generation that was exposed to two collisions from both sides. Firstly by the impactor for tram headstock tests and secondly by the tram headstock itself. Both the impactor and the headstock were placed on the experimental vehicle for tests of passive safety of rail vehicles. Various speeds were chosen so that the passenger car could be used for two subsequent experiments without the influence on properties of skeleton´s supporting structure.

scholarly journals Strategic Aspect of Knowledge Management

Organizacija ◽  
2017 ◽  
Vol 50 (2) ◽  
pp. 163-176 ◽  
Author(s):  
Olja Arsenijević ◽  
Dragan Trivan ◽  
Iztok Podbregar ◽  
Polona Šprajc
Keyword(s):  
Knowledge Management ◽  
Tacit Knowledge ◽  
First Generation ◽  
Point Of View ◽  
Factors Affecting ◽  
Level Of Knowledge ◽  
Empirical Point ◽  
Using Data ◽  
Tacit Knowledge Management

Abstract Background and Purpose: This paper analyses the strategic aspects of knowledge management in organizations in Serbia, from the theoretical and empirical point of view. In its theoretical part, the paper analyzes the latest literature in the fields of knowledge management, relations between communications strategyes and knowledge management, generations of knowledge management and organizational culture. Design/Methodology/Approach: In its empirical part, the paper deals with determining the level of knowledge management in Serbian organizations through diffrent generations of knowledge management, as well as the problem with explicit and tacit knowledge management. The hypotheses were tested using data colleted from organizatons in Serbia via questionnaire, which consisted of 50 questions to examine five key factors in knowledge management. Results: The results showed that out of 41 indicators, only eight are rated positively. Results of t-test indicate significant distinctions within factors affecting the quality of knowledge management, as well as differences in quality of explicit and tacit knowledge management, therefore they confirmed both hypotheses. Conclusion: The knowledge management projects in organizations in Serbia are initiated, as well as that belonging to the first generation of knowledge management can be defined.

Do Students of Noncollege-Educated Parents Achieve Less Academically Than Students of College-Educated Parents?

1999 ◽  
Vol 85 (2) ◽  
pp. 417-421 ◽  
Author(s):  
Carlos P. Zalaquett
Keyword(s):  
Grade Point Average ◽  
Minority Students ◽  
First Generation ◽  
College Experience ◽  
The Other ◽  
Retention Rates ◽  
First Generation Students ◽  
Grade Point ◽  
Retention Characteristics ◽  
College Educated

The ethnicity, grade point average (GPA), and retention characteristics of 202 students whose parents never attended college, 244 students whose parents had some college experience, and 394 students whose parents graduated from college were examined. Analysis showed that a significantly higher percentage of minority students were first-generation students. No significant differences were found between the GPA and retention rates of first-generation students and those of the other two.

The Air-to-air Missile Matra 530

1969 ◽  
Vol 73 (701) ◽  
pp. 449-452
Author(s):  
J. E. Cadoux
Keyword(s):  
Air Force ◽  
High Performance ◽  
First Generation ◽  
Second Generation ◽  
Point Of View ◽  
Ground Control ◽  
Close Link ◽  
Pure Pursuit ◽  
Very High ◽  
Pursuit Curve

The Matra 530 is currently called a second generation air-to-air missile. Indeed the first generation of air-to-air missiles was represented in France by the Nord 5103 which was command-guided, or the Matra 511 which was a semi-active, pure pursuit curve missile. In the second part of the 1950's the requirement was obvious for a sophisticated interception system capable of coping with the high and medium altitude threat represented by heavy and medium bombers. The destruction of this threat required a close link with an interception system composed of ground radars, ground control equipment, sophisticated high performance interceptor aircraft and, as a last link, a very high performance missile. From the French Air Force point of view, the two main characteristics of this missile as the last link of an interceptor system, were first its flexibility in different weather environment and counter measure environment; second, its capability to decrease to the maximum the penetration of the enemy bomber, which meant that the missile should be capable of attacking not only in the rear sector but also in frontal attack and in fact in all sectors around the attacking bomber.

The First Generation of Computers

2019 ◽  
pp. 117-142
Author(s):  
Giuseppe Primiero
Keyword(s):  
First Generation ◽  
Point Of View ◽  
Historical Evolution ◽  
Universal Model ◽  
Von Neumann ◽  
Model Of Computation ◽  
Von Neumann Architecture

This chapter starts with the analysis of the engineering foundation of computing which, proceeding in parallelwith themathematical foundation, led to the design and creation of physical computingmachines. It illustrates the historical evolution of the first generation of computing and their technical foundation, known as the von Neumann architecture. Fromthe conceptual point of view, the chapter clarifies the relation between the universal model of computation and the construction of an all-purpose machine.

General Ways to Identity Students with Scientific and Mathematical Potential

1953 ◽  
Vol 46 (4) ◽  
pp. 230-234
Author(s):  
Howard F. Fehr
Keyword(s):  
Point Of View ◽  
Gifted Children ◽  
Early Age ◽  
Gifted Child ◽  
School Program ◽  
Great Work ◽  
Teachers College ◽  
Outstanding Teachers ◽  
The One ◽  
Work Done

The task of identifying giftedness is not an easy one. In December 1940, a two- day conference and workshop on education for the gifted was held at Teachers College in honor of the great work done by Leta Hollingworth. One section of outstanding teachers and educational research workers devoted itself entirely to the task of identifying the gifted child. The conclusion reached was: “At the present time we have practically no adequate instrument for identifying the gifted.”1 In The Gifted Child2 edited by Paul Witty, we read, “Present means of identifying and guiding the gifted leaves much to be desired,” and the rest of the brief chapter gives adequate support to this stand both in its meagerness of discussion and the problems for investigation that are raised. Even the latest book on Educating Gifted Children3 a report on the Hunter College Elementary School Program by Gertrude Hildreth and others, takes the same point of view regarding our ability to detect the gifted at an early age. Formal tests seem to be the one criteria that most people rely upon.

The Instituto Antarctico Argentino

ARCTIC ◽  
1963 ◽  
Vol 16 (2) ◽  
pp. 82 ◽  
Author(s):  
Leonard A. LeSchack
Keyword(s):  
Scientific Work ◽  
Easy Access ◽  
Administrative Staff ◽  
Scientific Investigations ◽  
International Geophysical Year ◽  
Active Interest ◽  
Polar Organization ◽  
Work Done ◽  
The Antarctic ◽  
International Geophysical

... In view of the number of organizations annually participating in these expeditions, the Argentine Government decided to establish one central organization to be responsible for the scientific work done by Argentina in the Antarctic. In addition, this organization was to be the common repository for information gathered on previous Argentine expeditions, as well as for that of future endeavours. The Instituto Antartico Argentino was therefore established in Buenos Aires. It is a scientific and technical organization whose mission is to study the nature of the antarctic region. From its inception, it has steadily grown to occupy a prominent position in antarctic affairs and become the leading organization influential in all Argentine antarctic problems. By Presidential Order the organization entitled "Instituto Antartico Argentino 'Coronel Hernan Pujato' " was established on 17 April 1951 under the administration of the Minister of Technical Affairs. The name honored Coronel Hernan Pujato, who commanded the first Argentine Army antarctic expedition. He became the Institute's first Director. With the preparations for the International Geophysical Year underway, the Institute's activities expanded and Captain Rodolfo N. Panzarini, now a retired rear admiral, was named Director. He still retains this position and is the main driving force behind the organization (see Fig. 1). At the time of his nomination, the organization officially took the name "Instituto Antartico Argentino" (I.A.A.). The Institute is an in-house polar organization, containing in one building the entire administrative staff, scientists, technicians, laboratories, shops, and equipment storage facilities necessary to carry out scientific investigations in the Antarctic. There is an advantage in keeping under one roof the majority of persons with an active interest in antarctic work so that they can confer easily with one another, exchange data, and have easy access to a polar library. Such a closely knit organization constitutes a potentially powerful voice in antarctic affairs. This voice perhaps is not as great a consideration in the present thinking of other polar organizations as it is with the Argentines, whose interest in Antarctica, and in particular the Palmer Peninsula area, is very strong. ...

Introduction to Heritage Language Development

2019 ◽  
pp. 417-433
Author(s):  
Silvina Montrul ◽  
Maria Polinsky
Keyword(s):  
Heritage Language ◽  
First Generation ◽  
Language Change ◽  
Age Of Onset ◽  
Point Of View ◽  
Heritage Speakers ◽  
Heritage Languages ◽  
First Generation Immigrants ◽  
Heritage Language Development

This chapter presents and analyses main factors that contribute to attrition in heritage languages. It shows that heritage speakers are a highly heterogeneous population from both a psycholinguistic and sociolinguistic point of view. In principle, their language can differ from the language of their input (baseline language, usually that of first-generation immigrants to a new country). The differences can be due to how the heritage language developed under reduced input conditions, interference from the dominant language (transfer) and innovations in the grammar, potential changes incipient in the input, and attrition proper. The latter is particularly apparent when the language of adult heritage speakers is compared with the language of bilingual children; such children outperform heritage speakers on a variety of linguistic properties. The critical factors that affect language change in heritage speakers include the age of onset of bilingualism and quantity/quality of input.

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