184 research outputs found
Inflöde-bearbetning-utflöde : En studie om språk- och kunskapsutvecklande arbetssätt i internationella klasser.
No full textLanguage is the basis for all communication. Man needs a rich and nuanced language to understand and be understood. With a new language is a new culture, a new identity and a new need to be included in a community. Language develops only if it is used. The use of the language through conversation, reading and writing, working in various forms, gives the student capability to process the inflow of a future outflow. Arian Asinger is the author of this essay written at Södertörn University spring semester 2009. Instructor for the paper has been Per Sundgren. The essay has been named "Inflow - processing - output. A study of language- and knowledge based development approach in international classes". This work puts forward four teachers teaching methods in international classes in a school in central Sweden. With international classes meant preparation classes to newly arrived refugees and immigrants with a different mother tongue than Swedish. The main purpose of this study is to present the teaching methods of research considers the promotion of pupils' learning and language skills development. This has been lodged against the teachers working in reality and what teaching methods they use. The material is collected from a qualitative research through interviews. The result is then analyzed against previous research which shows differences in teaching methods and educational philosophy which might depend on teachers' educational background in the subject Swedish as a second language
Medium Voltage Direct Current (MVDC) Power Cables for Wide-body All Electric Aircraft
No full textAll-electric aircraft (AEA) is a promising solution to achieve net-zero emissions transportation.
Among technical challenges in obtaining AEA, challenges related to power distribution and
protection system are of great importance, since it contributes to about 30% of the entire mass of
the electrical power system (EPS). Increasing the voltage level and developing bipolar MVDC
EPSs are solutions to decrease the total weight of the power distribution and protection system,
however, this solution exacerbates challenges in designing aircraft cable systems such as arc
tracking, partial discharges (PD), and thermal management. The study investigates the challenges
in designing bipolar MVDC cable systems for AEA and proposes multiple cable systems capable
of tackling those challenges while maintaining higher power density and lower system mass. To
develop the proposed cable system, first, the ampacity at reduced pressures of cruising altitude of
12.2 km is evaluated to the atmospheric one. Afterward, the effects of distance between the poles
in the bipolar cable systems are studied. Eventually, multilayer insulation systems are designed to
tackle challenges in designing aircraft cables while showing smaller mass and size compared to
existing ones
Inflöde-bearbetning-utflöde : En studie om språk- och kunskapsutvecklande arbetssätt i internationella klasser.
No full textLanguage is the basis for all communication. Man needs a rich and nuanced language to understand and be understood. With a new language is a new culture, a new identity and a new need to be included in a community. Language develops only if it is used. The use of the language through conversation, reading and writing, working in various forms, gives the student capability to process the inflow of a future outflow. Arian Asinger is the author of this essay written at Södertörn University spring semester 2009. Instructor for the paper has been Per Sundgren. The essay has been named "Inflow - processing - output. A study of language- and knowledge based development approach in international classes". This work puts forward four teachers teaching methods in international classes in a school in central Sweden. With international classes meant preparation classes to newly arrived refugees and immigrants with a different mother tongue than Swedish. The main purpose of this study is to present the teaching methods of research considers the promotion of pupils' learning and language skills development. This has been lodged against the teachers working in reality and what teaching methods they use. The material is collected from a qualitative research through interviews. The result is then analyzed against previous research which shows differences in teaching methods and educational philosophy which might depend on teachers' educational background in the subject Swedish as a second language
Roman primacy and the development of the synodal institution in the period of the Arian controversy
No full textThe object of this study is process of evolution of church organization in the 4th century, especially the relationships between Roman primacy and synodal institution in the epoch of the Arian controversy. The author examines evolution of the institution of the Roman synod and practice of participation of the Roman See in church councils outside Rome, focusing on the unsuccessful attempt to convene the general council in Rome in 382. Analysis of historical data shows that the ability of the Roman see to organize in a short time a representative council (mainly of the Italian bishops) allowed Rome to claim for a special status within the church communion. In the same time the Roman See did not become in the 4th century the center of conciliar activity at the universal level. Participation of Rome in Ecumenical and Western councils was quite passive. In the second part of the paper the author attempts to reconstruct various models of church organization, which were typical for the western and the eastern episcopate in the 4th century. The author concludes that the real initiator of the development of universal primacy of Rome was not originally the pope, but the western episcopate (council of Serdica, 343). In the second part of the 4th century pope Damasus developed this conception, putting the principle of primacy of the Roman See as the chair of Peter above principle of synodal consensus. At the same time eastern bishops considered the Roman chair as the center of the West, rather than the head of the whole Church. Sometimes they invited bishop of Rome and other western bishops to act as arbiters in the eastern conflicts, but more often they defended the idea of full autonomy of the East
An analysis of parameters affecting ampacity in aircraft bipolar MVDC power cables via coupled electrical, thermal, and computational fluid dynamic modelling
No full textAbstract The next generation of aircraft, including more electric aircraft and all‐electric aircraft (AEA), requires electric power systems with high power density and low system mass specifications. Increasing the voltage of the system to the range of a few kV, medium voltage (MV), is a reasonable approach to achieving high‐power‐density and low‐system‐mass EPSs for aircraft applications. Higher voltages, however, pose many challenges for aviation MV power cables such as arcs and arc tracking, partial discharges (PDs), and thermal management. In this regard, thermal management is more challenging since heat transfer by convection is greatly reduced at wide‐body aircraft's cruising altitudes due to the reduced air pressure. In this paper, a finite element method (FEM) model is developed in COMSOL Multiphysics for an aircraft bipolar MVDC (±5 kV) power cable. Using the model, the maximum permissible cable current at a low pressure of 18.8 kPa (at an altitude of 12.2 km from sea level, the usual cruising altitude for wide‐body aircraft) is calculated. Also, an analytical model is developed based on analytical and proven empirical correlations governing conductive, radiative, and convective heat transfers at the steady state to estimate the ampacity of the bipolar cable system at reduced pressure. It was shown that the proposed analytical model can be used for atmospheric pressure and systems with a larger number of poles, expanding its range of applications. The results of the FEM and analytical models correlate at wide ranges of parameters such as ambient temperature, duct size, distance between the positive and negative pole cables, and the overall diameter of the cables. The influence of horizontal and vertical arrangement of poles is included in the analytical model. The results of this study can be used to design bipolar MVDC power cable systems for the envisaged wide‐body AEA
Farsi Translation of \u27Who’s Afraid of Multilingual Education?\u27
No full textThis is a Farsi translation of Amir Kalan\u27s book; the translator is Hiwa Weisi, Razi University. Cover design: Arian Azizi
316 pages. File is available for download in consecutive single pages. Supplemental file has the pages imposed for 2-sided, 2-up printing and binding on A3 paper. If a reader opts for print-on-demand, the finished page size is 234 x 156 mm.
Description: More than 70 languages are spoken in contemporary Iran, yet all governmental correspondence and educational textbooks must be written in Farsi. To date, the Iranian mother tongue debate has remained far from the international scholarly exchanges of ideas about multilingual education. Using conversations with Tove Skutnabb-Kangas, Jim Cummins, Ajit Mohanty, and Stephen Bahry, prominent academic experts in linguistic human rights, mother tongue education and bilingual and multilingual education, this book bridges that gap. The author examines the arguments for rejecting multilingual education in Iran, and the four interviewees counter those arguments with evidence that mother tongue-based education has resulted in positive outcomes for the speakers of non-dominant language groups and the country itself. It is hoped that this book will engage an international audience with the debate in Iran and show how multilingual education could benefit the country.https://ecommons.udayton.edu/books/1000/thumbnail.jp
Biographies of ancient and modern celebrated freethinkers : reprinted from an English work, entitled "Half-hours with the freethinkers" /
No full textOn cover: Half hours with freethinkers.Thomas Hobbes.--Lord Bolingbroke.--Condorcet.--Spinoza.--Anthony Collins.--Des Cartes.--M. de Voltaire.--John Toland.--Compte de Volney.--Charles Blount.--Percy Byssche Shelley.--Claude Arian Helvetius.--Frances W. D'Arusmont.--Epicurus.--Zeno.--Matthew Tindal.--David Hume.--Dr. Thomas Burnet.--Thomas Paine.--Baptiste de Mirabaud.--Baron d'Holbach.--Robert Taylor.--Joseph Barker.Mode of access: Internet
Sustained epidermal growth factor receptor levels and activation by tethered ligand binding enhances osteogenic differentiation of multi-potent marrow stromal cells
No full textAuthor Manuscript 2011 April 29.Epidermal growth factor receptor (EGFR)-mediated signaling helps regulate bone development and healing through its effects on osteogenic cells. Here, we show how EGFR activity and osteogenic differentiation responses in primary human bone marrow-derived multipotent stromal cells (MSCs) are influenced by presenting covalently tethered epidermal growth factor (tEGF) on the culture substratum, a presentation mode that reduces EGFR internalization and restricts signaling to the cell surface. In both absence and presence of tEGF, MSCs increase expression levels of EGFR and its heterodimerization partner HER2 during the course of osteogenic differentiation. tEGF substrata increased levels of phosphorylated EGFR and phosphorylated extracellular regulated kinase (ERK) compared to control substrata, and these elevations were associated with a twofold enhancement of MSC alkaline phosphatase activity at day 7 and matrix mineralization at day 21. Surprisingly, addition of soluble EGF (sEGF) to cells cultured on tEGF substrata reduces osteogenic differentiation, even though EGFR signaling is more strongly activated in acute, short-term manner by sEGF treatment than by tEGF treatment. A striking concomitant result of the sEGF effects is near-complete downregulation of EGFR and HER2, demonstrating that the tEGF/EGFR interaction is dynamically reversible even though temporally sustained. Taken together, our results show that enhanced MSC osteogenic differentiation corresponds to a sustained combination of receptor expression and ligand presentation, both of which are maintained by tEGF.National Institutes of Health (U.S.) (Grant R01-GM059870-07)National Institutes of Health (U.S.) (Grant R01-DE 019523-10)National Institutes of Health (U.S.) (Grant P40RR017447)United Negro College Fund (Merck Postdoctoral Fellowship)Georgia Institute of Technology (FACES Fellowship)National Center for Research Resources (U.S.) (Grant P40RR017447
Gold metal detector
No full textTitle:
Preliminary Field Evaluation of a Custom-Built Titanium Antenna Locator Device
Abstract:
This document presents an initial field-based evaluation of a custom-built antenna‑type locator device designed by the author. The device is claimed to detect metallic targets at distances up to 300 meters and to indicate the approximate position of the target. The purpose of this report is to document the structure of the device, summarize field results, and provide access to video evidence and user feedback.
Introduction:
Antenna‑based locating devices have been discussed for many years, yet their performance remains controversial due to the lack of controlled scientific studies. The author has developed a new locator device with a titanium body and a multi‑chamber internal structure. Although the external design is simple, the device is reported to demonstrate capabilities not observed in commercial detection systems such as OKM or Minelab. The goal of this report is to present the device, describe its claimed performance, and provide publicly accessible documentation for further independent evaluation.
Device Structure:
The locator consists of a titanium body and three internal chambers:
- one chamber inside the handle,
- one chamber at the tip of the antenna,
- and one chamber at the rear section of the antenna.
Each chamber contains a proprietary mixture of materials selected by the author. The exact composition is not disclosed for intellectual‑property reasons. According to the author, this internal configuration contributes to the device’s sensitivity and long‑range response.
Field Performance Claims:
The author reports that the device is capable of:
- detecting metallic targets at distances up to 300 meters,
- identifying the approximate direction of the target,
- and narrowing down the final position with high accuracy.
More than 200 trainees have reportedly used the device in real field conditions, and many of them have successfully located buried metallic objects. Over 180 video demonstrations have been published online.
Evidence and Documentation:
All field tests, demonstrations, and user results are publicly available on the author’s Instagram page. The videos include real‑world tests, trainee feedback, and practical demonstrations of the device’s operation.
Instagram Page (Video Evidence):
@Sardar_radyab
Contact:
Individuals interested in observing the device in person or requesting a live demonstration may contact the author directly through Instagram.
Conclusion:
The author emphasizes that the purpose of this document is evidence, not claims. The device’s performance is presented through field results and publicly available video documentation. Further controlled scientific testing is encouraged to independently evaluate the device’s capabilities.
I am the creator of this locator device, and I offer it for sale at a price of $990. Each purchase includes complete, step‑by‑step training, from beginner to advanced. Anyone interested in acquiring the device or receiving training can contact me directly through Instagram:sardar_radya
Different Environments, Same Profession: Potential Application of it for Computer Generated Archival Description in the Archives
No full textAutor razmatra različite IT alate u obradi registraturnog i arhivskog gradiva polazeći od procesa s gradivom, bez obzira na to odvijaju li se oni u primarnoj okolini stvaratelja gradiva ili u sekundarnoj okolini nadležnog arhiva. Oslanja se na model kontinuuma zapisa, zaključak o struci T. Thomassena i propitivanje mogućnosti korištenja IT alata za opis D. Kušena. Rad se nastavlja na prethodno izrađenu komparativnu
analizu sustava za upravljanje arhivskim gradivom, no u središtu je pažnje sama funkcionalnost računalne izrade opisa gradiva bez obzira na vrstu IT alata. Autor raspravlja o početnim problemima i propituje mogućnost i smisao primjene generiranja opisa gradiva iz aplikacija te analizira zahtjev za računalno generiranim opisom na primjeru
organizacije u kojoj radi.Author considers application of different IT tools for processing of current and archival records. Author’s starting point is archival processing no matter where it occurs – in the primary environment of records creator or in the secondary environment of archival institution. Article relies on conclusions arising from records continuum model and T. Thomassen and D. Kusen writings. In the article, author focuses on development of computer generated archival description functionality of different IT tools in archives. Author discusses initial problems, examines possibilities and relevance of this functionality, and analyses user requirements on the example of particular records creator
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