scholarly journals Электродинамическая модель системы «излучатель-корпус объекта»

Author(s):  
A.R. Avdeev ◽  
R.Yu. Borodulin ◽  
V.P. Chernoles ◽  
I.G. Malygin

В целях выработки единого подхода к оценке роли корпуса подвижного объекта (грунтового, воздушного, корабельного, железнодорожного), на котором установлен малогабаритный излучатель произвольного типа, предложен единый энергетический подход с использованием понятия добротности. Показано, что добротность системы в широких пределах изменяется в зависимости от места установки малогабаритного излучателя. Для оценки вклада корпуса объекта в общую эффективность системы предложен параметр коэффициент возбуждения корпуса объекта, определяемый соотношением идеальной добротности малогабаритного излучателя в свободном пространстве к идеальной добротности излучателя, размещенного на корпусе подвижного объекта. Проанализированы пределы изменения данного коэффициента в зависимости от координат места установки излучателя и его типа (электрического или магнитного). Указанный подход позволяет численно оценить коэффициент полезного действия системы излучатель-корпус объекта при рассмотрении антенны произвольного типа, расположенной в произвольном месте корпуса.In order to develop a unified approach to assessing the role of the body of a moving object (ground, air, ship, or rail) equipped with a small-sized radiator of an arbitrary type, a unified energy approach is proposed using the concept of quality factor. It is shown that the quality factor of the system varies widely depending on the installation location of a small-sized radiator. To assess the contribution of the objects body to the overall system efficiency, a parameter is proposed - the excitation coefficient of the objects body, which is determined by the ratio of the ideal quality factor of a small-sized radiator in free space to the ideal quality factor of a radiator mounted on the body of a moving object. The range of this coefficient is analyzed depending on the location coordinates of the installed radiator and its type (electric or magnetic). This approach allows the numerical evaluation of the efficiency of the radiator objects body system when considering an antenna of an arbitrary type located in an arbitrary location on the body.

Author(s):  
Adil Ali Aiyush Al Zeen

ملخص البحث: يعرض هذا البحث موضوع  الخلود في الشعر الجاهلي، ودوره في تكوين شخصية الرجل المثال؛ إذ إن الجاهليين أرَّقَتهم مسألة الفناء، فبحثوا عن الخلود الجسدي وأدركوا أنه لا يمكن تحقيقه، وأمام رفضهم للفناء، اتضح لهم أن الخلود المعنوي هو السبيل الوحيد لبقاء الذكر بعد فناء الجسد، فعمد الرجل المثال في العصر الجاهلي إلى القيام بأفعالٍ حميدةٍ يذكره الشعراء في قصائدهم بها، ويفخر بها هو في أشعاره، كشهرة عنترة بالشجاعة، وحاتم بالكرم، والسموأل بالوفاء. ولإدراكهم أن أفعالهم تلك ستُبْقِي ذكرهم سائر العصور. توصل البحث إلى نماذج من أشعار الجاهليين، ليصل في النهاية إلى أنهم أدركوا أن خلودهم يتحقق معنوياً لا جسدياً. فيظهر لنا - من خلال الشعر – معنى الخلود ومعنى المثال، وإدراكهم لحقيقة الفناء بعد أن لمسوه في أنفسهم وفي مشاهد الطبيعة من حولهم، وطريقتهم في البحث عن الخلود المعنوي، ودور الشعر في تحقيق هذه الغاية. ثم يتبيَّنُ لنا إدراكهم أن الخلود لا يكون إلا من خلال المُثُلِ والقِيَمِ العربية التي كانوا يأتونها ويفخرون بها. الكلمات المفتاحية: الجاهلي - الشعر - الرجل - المثال - الخلود.         Abstract     The paper discusses the topic of immortality in the pre-Islamic period and its role in constructing the character of an ideal man. Since the Arabs before Islam were softened by the issue of death, they dwelled on the topic of immortality though they knew it too well its impossibility. As they rejected mortality, they realized that the abstract immortality is the only way for them to be remembered after the mortality of the body that enticed the ideal man in the pre-historic period to do commendable deeds that other poets would mention them with or he would make it as a virtue in his poems; as ‘Antarah was known for his bravery, Hatim with his generosity and Samuel with his loyalty as they realized that their deeds will be remembered for the rest of the ages. The study highlighted on a number of the Pre-Islamic poems and concluded that those poets realized that their mortality was achievable in a subtle way but not physically. This seems to us- from the poems- the meaning of immortality, idealism and their realization of the meaning of mortality from what they witnessed from the natural scenes that take place around them; the means to immortalize themselves in a subtle way and the role of poems in achieving this aim. We also learned that they themselves were fully aware that immortality is possible only through the Arabic virtues that they so proudly adhered to.   Keywords: Pre-Islamic period, Poem, Man, Ideal, Immortality     Abstrak   Makalah ini membincangkan tema keabadian hidup dalam era Jahiliah dan peranannya dalam membentuk keperibadian manusia ideal. Memandangkan bangsa Arab sebelum Islam mudah dilunakkan dengan isu kematian, mereka tetap mencanangkan tema keabadian walaupun sedar tentang kemustahilan untuk mengelaknya. Apablila mereka cuba menolak kematian, mereka menyedari bahawa keabadian secara abstrak ialah satu-satunya cara untuk mereka diingati selepas kematian dan meninggalkan legasi manusia ideal  dalam era Jahiliah ialah dengan menjadikan ingatan terhadap mereka itu ialah dengan kebaikan apa yang mereka lakukan dalam sebutan penyair-penyair lain ataupun dengan mereka sendiri menyebutnya dalam karya syair mereka sendiri. Demikianlah ‘Antarah dikenali dengan keberaniannya, Hatim dengan kemurahan hatinya, Samuel dengan kesetiaannya kerana kebaikan mereka akan dikenali sehingga bila-bila. Kajian ini menumpukan  kepada beberapa syair Jahiliah dan menyimpulkan bahawa penyair-penyair tersebut menyedari bahawa keabadian mereka boleh dicapai secara halus dan bukan secara fizikal. Kita dapat merumuskan daripada syair-syair tersebut bahawa pernyataan maksud keabadian dan idealisma serta penyerlahan maksud keabadian oleh mereka melalui apa yang mereka lihat berlaku di sekeliling mereka; cara untuk mengabadikan diri mereka ialah dengan melalui syair. Kami juga memperoleh maklumat bahawa mereka juga amat menyedari yang keabadian adalah sesuatu yang dapat dicapai melalui nilai-nilai budaya Arab yang amat mereka banggakan.   Kata kunci: Era jahiliah, Syair, Manusia, Keabadian


2020 ◽  
Vol 7 (1 (25)) ◽  
pp. 180-186
Author(s):  
Elena A. Shlegel

The ethnic identity of Russian Germans is formed by various factors. A special role in the self-identification of ethnic Germans are played the body system of self-organization at present stage, most of which is represented by the Centers of German Culture located in different regions of the country. The article analyses the activities of the Centers for German Culture, as well as their contribution of the formation and preservation of the ethnic identity of Russian Germans through project activities implemented in recent years.


Hearts ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 551-560
Author(s):  
Nilank Shah ◽  
Karan Kumar ◽  
Nikeith Shah

The purpose of this literature review is to gain an overview of the role of platelet-activating factor (PAF) within each of the body systems and how it contributes to normal and pathophysiological states. The review showed that there are multiple functions of PAF that are common to several body systems; however, there is little evidence to explain why PAF has this affect across multiple systems. Interestingly, there seems to be conflicting research as to whether PAF is an overall protective or pathogenic pathway. Within this research, it was found that there are different pathways depending on the specific body system, as well as between body systems. However, one universal function reported in the literature is of PAF as a pro-inflammatory molecule. Overall, this review identified five major functions of PAF: vasoconstriction, increased inflammation, vascular remodeling, increased edema, and endothelial permeability.


2012 ◽  
Vol 82 (3) ◽  
pp. 228-232 ◽  
Author(s):  
Mauro Serafini ◽  
Giuseppa Morabito

Dietary polyphenols have been shown to scavenge free radicals, modulating cellular redox transcription factors in different in vitro and ex vivo models. Dietary intervention studies have shown that consumption of plant foods modulates plasma Non-Enzymatic Antioxidant Capacity (NEAC), a biomarker of the endogenous antioxidant network, in human subjects. However, the identification of the molecules responsible for this effect are yet to be obtained and evidences of an antioxidant in vivo action of polyphenols are conflicting. There is a clear discrepancy between polyphenols (PP) concentration in body fluids and the extent of increase of plasma NEAC. The low degree of absorption and the extensive metabolism of PP within the body have raised questions about their contribution to the endogenous antioxidant network. This work will discuss the role of polyphenols from galenic preparation, food extracts, and selected dietary sources as modulators of plasma NEAC in humans.


1990 ◽  
Vol 29 (04) ◽  
pp. 282-288 ◽  
Author(s):  
A. van Oosterom

AbstractThis paper introduces some levels at which the computer has been incorporated in the research into the basis of electrocardiography. The emphasis lies on the modeling of the heart as an electrical current generator and of the properties of the body as a volume conductor, both playing a major role in the shaping of the electrocardiographic waveforms recorded at the body surface. It is claimed that the Forward-Problem of electrocardiography is no longer a problem. Several source models of cardiac electrical activity are considered, one of which can be directly interpreted in terms of the underlying electrophysiology (the depolarization sequence of the ventricles). The importance of using tailored rather than textbook geometry in inverse procedures is stressed.


2020 ◽  
Vol 99 (4) ◽  
pp. 379-383
Author(s):  
Vasily N. Afonyushkin ◽  
N. A. Donchenko ◽  
Ju. N. Kozlova ◽  
N. A. Davidova ◽  
V. Yu. Koptev ◽  
...  

Pseudomonas aeruginosa is a widely represented species of bacteria possessing of a pathogenic potential. This infectious agent is causing wound infections, fibrotic cystitis, fibrosing pneumonia, bacterial sepsis, etc. The microorganism is highly resistant to antiseptics, disinfectants, immune system responses of the body. The responses of a quorum sense of this kind of bacteria ensure the inclusion of many pathogenicity factors. The analysis of the scientific literature made it possible to formulate four questions concerning the role of biofilms for the adaptation of P. aeruginosa to adverse environmental factors: Is another person appears to be predominantly of a source an etiological agent or the source of P. aeruginosa infection in the environment? Does the formation of biofilms influence on the antibiotic resistance? How the antagonistic activity of microorganisms is realized in biofilm form? What is the main function of biofilms in the functioning of bacteria? A hypothesis has been put forward the effect of biofilms on the increase of antibiotic resistance of bacteria and, in particular, P. aeruginosa to be secondary in charcter. It is more likely a biofilmboth to fulfill the function of storing nutrients and provide topical competition in the face of food scarcity. In connection with the incompatibility of the molecular radii of most antibiotics and pores in biofilm, biofilm is doubtful to be capable of performing a barrier function for protecting against antibiotics. However, with respect to antibodies and immunocompetent cells, the barrier function is beyond doubt. The biofilm is more likely to fulfill the function of storing nutrients and providing topical competition in conditions of scarcity of food resources.


2019 ◽  
Vol 1 (1) ◽  
pp. 21-31 ◽  
Author(s):  
Louis Brunet

This article proposes a model of individual violent radicalisation leading to acts of terrorism. After reviewing the role of group regression and the creation of group psychic apparatus, the article will examine how violent radicalisation, by the reversal of the importance of the superego and the ideal ego, serves to compensate the narcissistic identity suffering by “lone wolf” terrorists.


Somatechnics ◽  
2017 ◽  
Vol 7 (2) ◽  
pp. 288-303
Author(s):  
Michael Connors Jackman

This article investigates the ways in which the work of The Body Politic (TBP), the first major lesbian and gay newspaper in Canada, comes to be commemorated in queer publics and how it figures in the memories of those who were involved in producing the paper. In revisiting a critical point in the history of TBP from 1985 when controversy erupted over race and racism within the editorial collective, this discussion considers the role of memory in the reproduction of whiteness and in the rupture of standard narratives about the past. As the controversy continues to haunt contemporary queer activism in Canada, the productive work of memory must be considered an essential aspect of how, when and for what reasons the work of TBP comes to be commemorated. By revisiting the events of 1985 and by sifting through interviews with individuals who contributed to the work of TBP, this article complicates the narrative of TBP as a bluntly racist endeavour whilst questioning the white privilege and racially-charged demands that undergird its commemoration. The work of producing and preserving queer history is a vital means of challenging the intentional and strategic erasure of queer existence, but those who engage in such efforts must remain attentive to the unequal terrain of social relations within which remembering forms its objects.


2020 ◽  
Vol 32 (3) ◽  
pp. 138-144
Author(s):  
Brian A. Jacobs

In federal criminal cases, federal law requires that judges consider the sentences other courts have imposed in factually similar matters. Courts and parties, however, face significant challenges in finding applicable sentencing precedents because judges do not typically issue written sentencing opinions, and transcripts of sentencings are not readily available in advanced searchable databases. At the same time, particularly since the Supreme Court’s 2005 decision in United States v. Booker, sentencing precedent has come to play a significant role in federal sentencing proceedings. By way of example, this article discusses recent cases involving defendants with gambling addictions, and recent cases involving college admissions or testing fraud. The article explores the ways the parties in those cases have used sentencing precedent in their advocacy, as well as the ways the courts involved have used sentencing precedent to justify their decisions. Given the important role of sentencing precedent in federal criminal cases, the article finally looks at ways in which the body of sentencing law could be made more readily available to parties and courts alike.


2014 ◽  
Vol 31 (1) ◽  
pp. 91-124
Author(s):  
Michael Dorfman

In a series of works published over a period of twenty five years, C.W. Huntington, Jr. has developed a provocative and radical reading of Madhyamaka (particularly Early Indian Madhyamaka) inspired by ‘the insights of post- Wittgensteinian pragmatism and deconstruction’ (1993, 9). This article examines the body of Huntington’s work through the filter of his seminal 2007 publication, ‘The Nature of the M?dhyamika Trick’, a polemic aimed at a quartet of other recent commentators on Madhyamaka (Robinson, Hayes, Tillemans and Garfield) who attempt ‘to read N?g?rjuna through the lens of modern symbolic logic’ (2007, 103), a project which is the ‘end result of a long and complex scholastic enterprise … [which] can be traced backwards from contemporary academic discourse to fifteenth century Tibet, and from there into India’ (2007, 111) and which Huntington sees as distorting the Madhyamaka project which was not aimed at ‘command[ing] assent to a set of rationally grounded doctrines, tenets, or true conclusions’ (2007, 129). This article begins by explicating some disparate strands found in Huntington’s work, which I connect under a radicalized notion of ‘context’. These strands consist of a contextualist/pragmatic theory of truth (as opposed to a correspondence theory of truth), a contextualist epistemology (as opposed to one relying on foundationalist epistemic warrants), and a contextualist ontology where entities are viewed as necessarily relational (as opposed to possessing a context-independent essence.) I then use these linked theories to find fault with Huntington’s own readings of Candrak?rti and N?g?rjuna, arguing that Huntington misreads the semantic context of certain key terms (tarka, d???i, pak?a and pratijñ?) and fails to follow the implications of N?g?rjuna and Candrak?rti’s reliance on the role of the pram??as in constituting conventional reality. Thus, I find that Huntington’s imputation of a rejection of logic and rational argumentation to N?g?rjuna and Candrak?rti is unwarranted. Finally, I offer alternate readings of the four contemporary commentators selected by Huntington, using the conceptual apparatus developed earlier to dismiss Robinson’s and Hayes’s view of N?g?rjuna as a charlatan relying on logical fallacies, and to find common ground between Huntington’s project and the view of N?g?rjuna developed by Tillemans and Garfield as a thinker committed using reason to reach, through rational analysis, ‘the limits of thought.’


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