SULLE RACCOLTE MUSEALI ITALIANE DI MODELLI PER LE MATEMATICHE SUPERIORI

Nuncius ◽  
2001 ◽  
Vol 16 (2) ◽  
pp. 781-790 ◽  
Author(s):  
FRANCO PALLADINO ◽  
NICLA PALLADINO
Keyword(s):  
Mathematical Models ◽  
Web Sites ◽  
General Catalogue ◽  
The 1950S ◽  
Almost All

Abstracttitle SUMMARY /title We present here the general catalogue and the website of the mathematical models found in the Italian universities of Catania, Messina, Bari, Naples, Rome, Florence, Bologna, Modena, Ferrara, Parma, Pavia, Milan, Padua, Turin and Genoa. For the most part they consist of old models published by the firms Ludwig Brill in Darmstadt, Martin Schilling in Halle an der Saale (later Leipzig), by H. Wiener for G. B. Teubner in Leipzig or belonging to the Collections Charles Muret published by Charles Delagrave in Paris. Other models were produced by different firms. A small number were even produced in Italy at the laboratories annexed to universities and, among these we also include the reproduction created in Florence by Luigi Campedelli in the 1950s with the support of the Unione Matematica Italiana. The research on the models (almost all of which are accompanied by the relevant images) can be carried out principally on the basis of the following criteria: Name of model - Catalogue - Material - Year of publication - Designer - Builder - Publisher - Location. The address of the mirrored web sites are: www.dmi.unisa.it/people/palladino/modelli and www.dma.unina. it/~nicla.palladino/catalogo.

scholarly journals Fitting mathematical models to lactation curves from holstein cows in the southwestern region of the state of Parana, Brazil

2015 ◽  
Vol 87 (1) ◽  
pp. 503-517 ◽  
Author(s):  
Abílio G.T. Ferreira ◽  
Douglas S. Henrique ◽  
Ricardo A.M. Vieira ◽  
Emilyn M. Maeda ◽  
Altair A. Valotto
Keyword(s):  
Mathematical Models ◽  
Milk Production ◽  
Information Criterion ◽  
The State ◽  
Holstein Cows ◽  
Suitable Model ◽  
Almost All ◽  
Quality Of Fit ◽  
Wood Model

The objective of this study was to evaluate four mathematical models with regards to their fit to lactation curves of Holstein cows from herds raised in the southwestern region of the state of Parana, Brazil. Initially, 42,281 milk production records from 2005 to 2011 were obtained from "Associação Paranaense de Criadores de Bovinos da Raça Holandesa (APCBRH)". Data lacking dates of drying and total milk production at 305 days of lactation were excluded, resulting in a remaining 15,142 records corresponding to 2,441 Holstein cows. Data were sorted according to the parity order (ranging from one to six), and within each parity order the animals were divided into quartiles (Q25%, Q50%, Q75% and Q100%) corresponding to 305-day lactation yield. Within each parity order, for each quartile, four mathematical models were adjusted, two of which were predominantly empirical (Brody and Wood) whereas the other two presented more mechanistic characteristics (models Dijkstra and Pollott). The quality of fit was evaluated by the corrected Akaike information criterion. The Wood model showed the best fit in almost all evaluated situations and, therefore, may be considered as the most suitable model to describe, at least empirically, the lactation curves of Holstein cows raised in Southwestern Parana.

Kinematic Analysis of Swiss Lever Escapement

2014 ◽  
Vol 945-949 ◽  
pp. 684-689
Author(s):  
Jie Pan ◽  
Yu Fu ◽  
Ru Xu Du
Keyword(s):  
Mathematical Models ◽  
Kinematic Analysis ◽  
Critical Role ◽  
Half Cycle ◽  
Depth Study ◽  
Almost All ◽  
Escapement Mechanism

The escapement mechanism in a mechanical watch movement plays a critical role. Its purpose is to maintain and count the oscillations of the balance wheel. The timekeeping accuracy is therefore regulated. The motion of the escapement mechanism is highly complicated and no in-depth study on its kinematics has been done by now. This paper investigates the kinematics of the Swiss lever escapement which is used in almost all mechanical watches. One half cycle of the motion is described in different phases. Mathematical models for each key component are developed. Simulation result shows that the model is precise in describing and predicting the motion of the escapement. This method is essential for improving and optimizing the design.

scholarly journals PEMANFAATAN E –JURNAL ILMIAH KELAUTAN DAN PERIKANAN BERBASIS OPEN JOURNAL SYSTEM PADA PEMUSTAKA PUSAT RISET PERIKANAN

Jurnal Pari ◽  
2021 ◽  
Vol 6 (2) ◽  
pp. 123
Author(s):  
Erny Puspa
Keyword(s):  
Web Sites ◽  
Information Search ◽  
Small Proportion ◽  
Scientific Journal ◽  
Quantitative Description ◽  
Literature Study ◽  
Fisheries Science ◽  
Using Data ◽  
Search Facility ◽  
Almost All

Tujuan penelitian untuk mengetahui pemanfaatan e-Jurnal Ilmiah KelautanPerikanan berbasis Open Journal System pada pemustaka Pusat Riset Perikanan. Penelitian dengan teknik pengumpulan data, observasi, kuesioner, dan studi pustaka. Sampel penelitian 32 respondenpemustakadengan metode penelitian deskripsi kuantitatif. Hasil penelitian menunjukkan “baik”dalam pemanfaatannya, dapat diukur hasil analisis yaitu : 80% atau hampir seluruhnya pemustaka mengetahui keberadaan e-Jurnal Ilmiah KP, dan untuk pemanfaatannya sebagian besar responden(63%) mengakses sebanyak lebih 3 kali dalam seminggu sedangkan untuk pemenuhan kebutuhan informasi sebagian besar (69 %) responden mengunjungi 4 kali lebih judul e-jurnal dengan dokumen yang diunduh dalam sebulan sebagian besar (69 %) sebanyak 10-15 dokumen. Adapunstategi pencarian informasi dan pemanfaatan yaitu sebagian besar (69%) menyatakan melalui situs web dengan pola penelusuran sebagian besar (69 %) melalui subjek tertentu dengan kecepatan proses penelusuran hampir seluruhnya (81%) menyatakan cepat. Dalam hal kesesuaian informasi sebagian besar (72%) menyatakan sesuai serta (84%) menyatakan mutakhir. Adapun dari segi ketersediaan jurnal lama kurun waktu 5-15 tahun hampir seluruhnya (81%) menyatakan banyak tersedia Adapun dalam hal kendala sebagian besar (69 %) respondenmenyatakan tidak ada kendala hanya sebagian kecil (19%) terdapat kendala yaitu kurangnya informasi mutakhir tentang konservasi dan teknik perkapalan, dan sebagian kecil 12 % menyatakanterbatasnya proses pencarian infornasi khusunya mengenai informasi mengenai bidang pengolahan dan teknologi produk karena tidak dapat ditelusuri melalui fasilitas search yang terdapat pada beranda website E- Jurnal ilmiah Kelautan dan Perikanan. Upaya yang dilakukan dalam mengatasi kendala tersebut yaitu dengan mengusulkan ke pengelola/penulis jurnal agar lebih menambah referensi up to date tentang konsevasi dan perkapalan dan untuk terbatasnya fasilitassearch sebaiknya dibuat satu login sehingga dapat membuka semua lokal konten satuan kerja lain di pencarian (search) beranda e -jornal ilmiah KP tanpa membuka database satuan kerjanya.The research objective was to determine the use of the e-Journal of Marine Science and Fisheries based on the Open Journal System at the Center for Fisheries Research. Research using data collection techniques, observation, questionnaires, and literature study. The research samplewas 32 respondents using quantitative description research methods. The results showed "good" in its utilization,the results of the analysis can be measured, namely: 80% or almost all of the users know the existence ofthe e-Scientific Journal of KP, and for its utilization most of the respondents (63%) access it more than 3 times a week to fulfill the needs. Most of the respondents (69%) visited the e-journal titles more than 4times with documents downloaded in a month, respondents downloaded around 10-15 documents. As for the information search and utilization strategy, most of them (69%) stated that through web sites,most of the search patterns (69%) were through certain subjects with the speed of the search processalmost entirely (81%) said it was fast. In terms of conformity of the information most (72%) stated that it was appropriate and (84%) stated that it was up to date. As for the availability of old journals for a period of 5-15 years, almost all (81%) stated that they were widely available. As for the constraints, most (69%)of the respondents stated that there were no obstacles, only a small proportion (19%) had problems,namely the lack of up-to-date information on conservation and shipping techniques, and a small proportion of 12%stated that the process of seeking information, especially information regarding the field of processing and product technology because it cannot be traced through the search facility foundon the homepage of the E-Journal of Marine and Fisheries Science Journals.Efforts made in overcoming these obstacles are by proposing journal managers / writersto add more up-to-date references about conservation and shipping and for the limited search facilities, one login should be made so that all local content of other work units can be opened in search (search) homepage. KP scientific e-journal without opening its work unit database.

Supplemental Web Sites

2011 ◽  
pp. 322-339
Author(s):  
Malini Krishnamurthi
Keyword(s):  
Web Sites ◽  
Web Site ◽  
Economies Of Scale ◽  
Student Body ◽  
Family Responsibilities ◽  
Face To Face ◽  
College Curriculum ◽  
Lecture Method ◽  
Education Administrators ◽  
Almost All

The population of today’s learners can be described as being more than 25 years old, with a job and/or family responsibilities. The vast student body requires a flexible program that can accommodate job-related travel, need for a more mobile learning environment and a learning method which may be more entertaining and interactive than the traditional “stand and lecture” method. In the process of innovating with technology in the college curriculum, business schools are confronted with the issue of achieving a balance between the issues of “richness” and “reach.” While members of the faculty see an opportunity to enrich education, administrators see an opportunity to realize economies of scale. Results from this empirical study show that students perceive a face-to-face course supported by a web site to be useful in enhancing their academic performance. Almost all the students made use of the classroom lectures and web site resources and did not feel the need to stay away from lectures.

Mapping lean experiences and emerging connections with clinical risk management in Italian context

2015 ◽  
Vol 21 (5) ◽  
pp. 1091-1116 ◽  
Author(s):  
Maria Crema ◽  
Chiara Verbano
Keyword(s):  
Risk Management ◽  
Web Sites ◽  
Clinical Risk Management ◽  
Content Type ◽  
Clinical Risk ◽  
Multiple Challenges ◽  
Italian Context ◽  
Almost All ◽  
First Time

Purpose – The purpose of this paper is to describe the Italian state of art of Health Lean Management (HLM) and to analyze the Italian projects that connect this approach with clinical risk management (CRM). Design/methodology/approach – After introducing Italian healthcare system and its main challenges, relevant Italian experiences have been searched investigating regional health plans (RHPs), managerial reports, books, workshops, conference proceedings and hospital web sites. The degree of experience of each Italian region has been first studied. Further, field of applicability, objectives, tools, practices and results of the projects with first signs of HLM and CRM integration have been analyzed. Findings – Although interest in new managerial approaches is spreading in almost all the territory and new managerial solutions are fostered in many RHPs, HLM projects are implemented patchy in Italy. For what regards HLM projects with CRM connections, the Italian context seems aligned with the international one, apart from few features. First indications for the implementation of HLM projects with CRM connections emerged. Originality/value – Healthcare systems are facing multiple challenges in a context where public funds decrease but quality of care must be guaranteed. Combining different managerial approaches could solve these issues. In this research, for the first time, a map about Italian HLM adoption has been drawn, and Italian HLM projects with CRM connections have been analyzed. The results constitute one of the first contributions useful to develop guidelines for the implementation of projects pursuing efficiency, quality and safety objectives.

The Death of Tiaoxi (the ‘Leaping Play’): Ritual Theatre in the Northwest of China

2003 ◽  
Vol 37 (4) ◽  
pp. 863-884 ◽  
Author(s):  
David Holm
Keyword(s):  
Video Footage ◽  
The 1950S ◽  
Field Workers ◽  
Almost All ◽  
Research Institute

This article is about one of the most depressing fieldwork situations I have ever encountered in China. Tiaoxi, basically, is dead. Some of the old artists are still alive, but the plays themselves were performed for the last time in 1987. There is video footage, taken by a professional team from the Ministry of Culture in Beijing, but the quality can only be described as execrable. There are abundant surviving libretti in manuscript, collected by field workers during the 1950s and again during the surveys of the 1980s, but they are almost all held in the Provincial Arts Research Institute in Xi'an, and no one is allowed to see them, not even the ‘old artists’ who donated them in the first place; not even photocopies are held by the county Cultural Bureau or by the artists themselves.

scholarly journals UnderstandingThe Problem of Social Cost

2014 ◽  
Vol 11 (2) ◽  
pp. 329-352 ◽  
Author(s):  
BRETT M. FRISCHMANN ◽  
ALAIN MARCIANO
Keyword(s):  
Mathematical Models ◽  
Real World ◽  
Social Cost ◽  
Legal Cases ◽  
New Approach ◽  
Classical Economics ◽  
Sustained Use ◽  
History Of ◽  
Seminal Article ◽  
Almost All

AbstractCoase always expressed dissatisfaction with neo-classical economics and advocated for a new approach. Rather than using toy mathematical models built from unrealistic, idealized assumptions, Coase preferred to study real-world contexts, including actual legal cases. He demonstrated the utility of his approach in ‘The Problem of Social Cost’. Yet almost all of Coase's contemporaries completely ignored, Coase's call for a new approach and his sustained use of legal cases to illustrate his arguments and to situate his analysis in reality. In this paper, we show that the profession interpreted Coase's seminal article exactly the opposite of what he had intended, and reduced his analytical contributions to a toy model of the exact sort he was criticizing. This ironic history of the most cited article both in law and in economics helps us understand the development of ideas within both fields and how disciplinary blinders shape intellectual progress.

scholarly journals Education Genres Animated Poster in the Second Half of the 20th Century

2016 ◽  
Vol 8 (4) ◽  
pp. 28-42
Author(s):  
Natalia G Krivulya
Keyword(s):  
Web Sites ◽  
New Technologies ◽  
Digital Technologies ◽  
Soviet Period ◽  
Special Role ◽  
Social Strategies ◽  
Outdoor Advertising ◽  
The 1950S ◽  
The 1960S ◽  
Artistic Image

After WWII the genre of the animated poster was predominantly presented as advertisment films. The movie posters imagery in the 1950s tended to have an illustrative and spatial-pictorial artistic propensity. Grotesque and satire gave way to the dominance of realistic images, and the artistic design had gained coloration and splendor, creating the image of a cheerful world, affluence and prosperity. Films with propaganda and ideological orientations appeared along with the advertisement films, as the political and social poster developed. A special role in the poster genre development was played by the emergence of television as a major customer and distributor of this product. Unlike Western animation, the production of advertisement and social film-posters in the USSR was a state tool of the planned economy. Animated posters played an important role in the formation of new social strategies, behavior patterns and consumption. As a result, in the animated posters of the Soviet period, especially during the 1950s and 1960s, a didactic tone and an optimistic pathos in the presentation of the material dominated. The stylistics of film-posters changed in the 1960s. Their artistic image was characterized by conciseness and expressiveness, inclination towards iconic symbolism, and the metaphoric and graphic quality of the imagery. The poster aesthetics influenced the entire animation development in this period. The development of advertisement and social posters continued in the 1970s-1980s. The clipping principles of the material presentation began to develop in the advertisement poster, however, in the social and political poster there was a tendency towards narration. Computer technology usage in animation and the emergence of the Internet as a new communicative environment contributed to a new stage in the development of the animated poster genre. Means of expression experienced a qualitative upgrade under the influence of digital technologies in animated posters. While creating an animated posters artistic appearance the attraction and collage tendencies intensify due to the compilation of computer graphics and photographic images, furthermore, simulacrum-images are actively utilized as well. Since the 2000s, digital technologies are actively used for the development of social, instructional and educational posters. The advent of new technologies has led to modifications of the animated poster genre, changed the way it functions and converted its form. Along with cinematic and television forms - new types of animated posters have appeared which are used in outdoor advertising (billboards) as well as dynamic interactive banners and animated posters on web sites.

scholarly journals Mathematical models of unshadowing the wages

2018 ◽  
pp. 19-26
Author(s):  
Olesia Martyniuk ◽  
Stepan Popina
Keyword(s):  
Mathematical Models ◽  
Shadow Economy ◽  
Economic Security ◽  
Sustainable Growth ◽  
Tax Rates ◽  
State Budget ◽  
Scientific Methods ◽  
High Level ◽  
Almost All ◽  
The Impact

The article addresses a social and economic phenomenon of shadow economy, which is typical for many countries and may result in a macroeconomic imbalance. The latter hinders the sustainable growth of the economy and leads to state budget losses. Shadow economy is penetrating into almost all sectors of the national economy. As shown in the paper, a high level of shadow economy is a threat to the national economic security of the country and a cause of declining its competitiveness. The findings confirm that measuring the impact of some factors of shadow economy on the economic security of the country is quite difficult. However, there are some factors for which mathematical models can be built to describe a correlation between economic indicators and a certain factor of shadow economy. Since salary expenses constitute a significant portion of enterprise’s basic expenses, it is important to build mathematical models for calculating the correlation between shadow salaries and tax rates. Thus, the purpose of the article is to examine mathematical models of the correlation between official and shadow salaries and tax rates. The developed mathematical models demonstrate that a reduction of tax rates is followed by changes in a shadow part of salaries. The article describes a number of cases when there are no changes in salaries and tax revenues, as well as cases of pay increase. The analysis finally suggests ways to increase salaries and techniques to de-shadow salaries. The authors use general scientific methods of generalization, comparison, analysis, and the method of mathematical modeling.

scholarly journals Development of safety monitor from destructive influences of web–sites and social networks of internet

2021 ◽  
Vol 273 ◽  
pp. 08046
Author(s):  
Larisa Cherckesova ◽  
Alexandr Zelensky ◽  
Elena Revyakina ◽  
Olga Safaryan ◽  
Denis Korochentsev
Keyword(s):  
Social Networks ◽  
Programming Language ◽  
Web Sites ◽  
High Speed ◽  
Parental Control ◽  
The Internet ◽  
Age Related ◽  
Security Monitor ◽  
Almost All ◽  
The Web

This article discusses the main age-related features of the Internet use by adolescents and children. Today more and more computers are connected to the Internet. At the same time, connection via high-speed channels is becoming more common, both at work and at home. More and more children get the opportunity to work on the Internet. But at the same time, the problem of ensuring the safety of children on the Internet is becoming more acute. For this, a security monitor was developed, which has many functions that allow you to use the Internet more safely and under parental control. This security monitor is written in the web programming language JavaScript and PHP, which will allow using the system on almost all modern browsers and on any computer. The article also provides screenshots of the program's operation and a flowchart with a detailed description.

Sign in / Sign up

Export Citation Format

Share Document