scholarly journals Brunowsky local form of a holomorphic family of pairs of matrices

1997 ◽  
Vol 253 (1-3) ◽  
pp. 175-198 ◽  
Author(s):  
J. Ferrer ◽  
MaI. García ◽  
F. Puerta
Keyword(s):  
Local Form ◽  
Holomorphic Family

Exchange-Correlation Energy Densities and Response Potentials: Connection Between Two Definitions and Analytical Model for the Strong-Coupling Limit of a Stretched Bond

2019 ◽  
Author(s):  
S. Giarrusso ◽  
Paola Gori-Giorgi
Keyword(s):  
Density Functional Theory ◽  
Strong Coupling ◽  
Density Functional ◽  
Correlation Energy ◽  
Order Term ◽  
Strong Coupling Limit ◽  
Local Form ◽  
Coupling Constant ◽  
Functional Theory ◽  
Exchange Correlation

We analyze in depth two widely used definitions (from the theory of conditional probablity amplitudes and from the adiabatic connection formalism) of the exchange-correlation energy density and of the response potential of Kohn-Sham density functional theory. We introduce a local form of the coupling-constant-dependent Hohenberg-Kohn functional, showing that the difference between the two definitions is due to a corresponding local first-order term in the coupling constant, which disappears globally (when integrated over all space), but not locally. We also design an analytic representation for the response potential in the strong-coupling limit of density functional theory for a model single stretched bond.<br>

scholarly journals On local and integrated stress-tensor commutators

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Mert Besken ◽  
Jan de Boer ◽  
Grégoire Mathys
Keyword(s):  
Stress Tensor ◽  
Free Field ◽  
Virasoro Algebra ◽  
Light Sheet ◽  
Operator Product ◽  
Local Form ◽  
Two Dimensional ◽  
Conformal Embedding ◽  
General Aspects ◽  
The Right

Abstract We discuss some general aspects of commutators of local operators in Lorentzian CFTs, which can be obtained from a suitable analytic continuation of the Euclidean operator product expansion (OPE). Commutators only make sense as distributions, and care has to be taken to extract the right distribution from the OPE. We provide explicit computations in two and four-dimensional CFTs, focusing mainly on commutators of components of the stress-tensor. We rederive several familiar results, such as the canonical commutation relations of free field theory, the local form of the Poincaré algebra, and the Virasoro algebra of two-dimensional CFT. We then consider commutators of light-ray operators built from the stress-tensor. Using simplifying features of the light sheet limit in four-dimensional CFT we provide a direct computation of the BMS algebra formed by a specific set of light-ray operators in theories with no light scalar conformal primaries. In four-dimensional CFT we define a new infinite set of light-ray operators constructed from the stress-tensor, which all have well-defined matrix elements. These are a direct generalization of the two-dimensional Virasoro light-ray operators that are obtained from a conformal embedding of Minkowski space in the Lorentzian cylinder. They obey Hermiticity conditions similar to their two-dimensional analogues, and also share the property that a semi-infinite subset annihilates the vacuum.

Sources and Chronology in Rastafari Origins

2005 ◽  
Vol 9 (1) ◽  
pp. 5-31
Author(s):  
Richard C. Salter
Keyword(s):  
Local Form ◽  
Caribbean Island ◽  
Local Sources ◽  
Eastern Caribbean ◽  
Separate Identity

Rastafari began in Jamaica in the 1930s and has since spread to many other countries. As it spread it drew on local sources and traditions to develop in distinctive new ways. Though most scholarship on Rastafari deals specifically with Jamaican forms of the religion, it often does so without recognizing the variety of local histories and forms that the movement actually takes. Consequently there has been an ongo-ing trend for Jamaican Rastafari to be normative for the movement as a whole, thus homogenizing what is really a diverse movement. This arti-cle explores the history and sources for a local form of Rastafari, the Dreads, in the eastern Caribbean island of Dominca. Particular attention is paid to how the Dreads formed, what their relationship with other, more normative, forms of Rastafari has been, and how they continue to negotiate a separate identity for themselves within the movement.

scholarly journals Focus on localized laryngeal amyloidosis: management of five cases

Open Medicine ◽  
2020 ◽  
Vol 15 (1) ◽  
pp. 327-332
Author(s):  
Massimo Mesolella ◽  
Gerardo Petruzzi ◽  
Sarah Buono ◽  
Grazia Salerno ◽  
Francesco Antonio Salzano ◽  
...  
Keyword(s):  
Systemic Disease ◽  
Clinical Aspects ◽  
Benign Tumors ◽  
Local Form ◽  
Systemic Involvement ◽  
Clinical Syndromes ◽  
Laryngeal Amyloidosis ◽  
And Control ◽  
Localized Laryngeal Amyloidosis

AbstractAmyloidosis is a group of idiopathic clinical syndromes caused by the deposition of insoluble fibrillar proteins (amyloid) in the extracellular matrix of organs and tissues. These deposits disrupt the function of the target organ. Amyloidosis can manifest as a systemic disease or a single-organ involvement (local form). Its etiology still remains unclear. Deposits of amyloid in the larynx are rare, accounting for between 0.2 and 1.2% of benign tumors of the larynx. In this retrospective study, we report the clinical aspects, diagnosis, treatment and follow-up of five female patients with localized laryngeal amyloidosis without systemic involvement. The patients were all treated successfully using microlaryngoscopy with CO2 laser or cold instruments. Prognosis is excellent; however, appropriate follow-up is an important part of the long-term management of this disease in order to prevent and control the possibility of local recurrence.

scholarly journals De Sitter and power-law solutions in non-local Gauss–Bonnet gravity

2018 ◽  
Vol 15 (11) ◽  
pp. 1850188 ◽  
Author(s):  
E. Elizalde ◽  
S. D. Odintsov ◽  
E. O. Pozdeeva ◽  
S. Yu. Vernov
Keyword(s):  
Power Law ◽  
Sufficient Conditions ◽  
Model Parameters ◽  
Local Form ◽  
De Sitter ◽  
Dynamical Equations ◽  
Non Local ◽  
Necessary And Sufficient ◽  
The Universe ◽  
Universe Evolution

The cosmological dynamics of a non-locally corrected gravity theory, involving a power of the inverse d’Alembertian, is investigated. Casting the dynamical equations into local form, the fixed points of the models are derived, as well as corresponding de Sitter and power-law solutions. Necessary and sufficient conditions on the model parameters for the existence of de Sitter solutions are obtained. The possible existence of power-law solutions is investigated, and it is proven that models with de Sitter solutions have no power-law solutions. A model is found, which allows to describe the matter-dominated phase of the Universe evolution.

scholarly journals Low levels of transforming growth factor-beta (TGF-beta) and reduced suppression of Th2-mediated inflammation in hyperreactive human onchocerciasis

Parasitology ◽  
2010 ◽  
Vol 138 (1) ◽  
pp. 35-45 ◽  
Author(s):  
S. KORTEN ◽  
A. HOERAUF ◽  
J. T. KAIFI ◽  
D. W. BÜTTNER
Keyword(s):  
Growth Factor ◽  
Lymph Nodes ◽  
Mhc Class Ii ◽  
Transforming Growth Factor Beta ◽  
Transforming Growth Factor ◽  
Plasma Cells ◽  
Local Form ◽  
Hla Dr ◽  
Growth Factor Beta ◽  
Antigen Presenting

SUMMARYTh2-biased inflammation with eosinophilia and IgE production is a hallmark of helminth infections. It is pronounced in hyperreactive onchocerciasis patients (‘sowda’ or ‘local form’), who efficiently kill microfilariae resulting in severe dermatitis and lymphadenitis. In contrast, hyporeactive patients (‘generalised form’) tolerate high microfilarial loads. This is thought to be mediated by regulatory CD4+ T cells and macrophages producing suppressive cytokines such as IL-10 and transforming growth factor-beta (TGF-β). We investigated whether hyperreactivity was reflected by lower local TGF-β production, analysing stable latent TGF-β1 expression in onchocercomas, lymph nodes and skin from hyperreactive and hyporeactive patients by immunohistochemistry. TGF-β expression was compared with that of IgE, IgG1, IgG4, and the antigen-presenting, CD4+ T cell-inducing MHC class II molecule HLA-DR. TGF-β was weakly and less frequently expressed by various cell types in onchocercomas, skin and lymph nodes from hyperreactive compared to hyporeactive patients. This applied to reactions around living and dead adult worms as well as dead microfilariae. Antigen-presenting cells strongly expressed HLA-DR in both forms, but their numbers were reduced in hyperreactive nodules. Plasma cells produced more IgE and IgG1, but less of the anti-inflammatory antibody IgG4 in hyperreactive onchocercomas. In conclusion, hyperreactivity is linked with reduced local expression of TGF-β, HLA-DR and IgG4, which might contribute to the insufficient down-regulation of inflammation via TGF-β- and HLA-DR-induced regulatory lymphocytes.

scholarly journals ROLE OF THE ALKALINE FACTOR IN THE DEVELOPMENT OF DENTAL CARIES

2020 ◽  
Vol 15 (4) ◽  
pp. 5-10
Author(s):  
Bahlul Hamzaeb ◽  
Ayat Jafarova ◽  
Rena Huseynova ◽  
Rumia Abbasova ◽  
Shahla Yusubova ◽  
...  
Keyword(s):  
Dental Caries ◽  
Acetylcholinesterase Inhibition ◽  
Local Form ◽  
Negative Consequences ◽  
Theoretical Justification ◽  
Endogenous Factors ◽  
Dental Hard Tissues ◽  
Hard Tissues ◽  
Civilization Disease

Subject. This article analyzes existing theories about the prevalence and causes of dental caries, which is considered as a civilization disease. The crucial role of endogenous factors in the risk of caries, including a pulp and dental fluid, is noted. Data are given that acids do not actively participate in the process of demineralization, which is confirmed by numerous theoretical and hypothetical points. The role of some materials produced by dental industry based on this “pseudo-acidogenic” theory and used in the treatment of caries, as well as the false and negative consequences created by them in general, is analyzed, and adequate parallels are carried out. The purpose of the study was the theoretical justification of the key role of acetylcholine (the cholinomimetic mediator located on the Toms fibers) in the occurrence of dental caries. Methodology. Russian and foreign research works due to the etiology, prevalence and pathogenesis of dental caries were studied, and a comparative theoretical analysis of the available data on this issue was carried out. Results. Based on the results of numerous studies cited in the available literature and our studies, we performed an analysis of theoretical principles and substantiated the data that the process of demineralization occurring in dental caries cannot be caused by acids. Therefore, the only and decisive factor in the origin of the demineralization process is the occurrence of the process because of alkaline substances. Conclusions. Based on the studied references, we present the data that the most current theories of the etiopathogenesis of caries are imperfect in terms of solving the problem, which, in our opinion, requires further study of the process both of acetylcholine and the enzyme acetylcholinesterase inhibition in the local form and inside dental hard tissues.

scholarly journals Model Regresi Logistik Terboboti Georafis pada Status Kemiskinan Kabupaten/Kota di Provinsi Sulawesi Selatan tahun 2016

2019 ◽  
Vol 1 (3) ◽  
pp. 87
Author(s):  
Sadriana Rustan ◽  
Muhammad Arif Tiro ◽  
Muhammad Nadjib Bustan
Keyword(s):  
Logistic Regression ◽  
Maximum Likelihood ◽  
Maximum Likelihood Estimation ◽  
Geographical Location ◽  
Predictor Variable ◽  
Likelihood Estimation ◽  
Local Form ◽  
South Sulawesi ◽  
Weighted Logistic Regression ◽  
Geographically Weighted Logistic Regression

Abstrak. Analisis regresi logistik digunakan untuk menentukan hubungan antara peubah respon bersifat kategori dengan satu atau lebih peubah penjelas dengan asumsi bahwa respon tidak dipengaruhi oleh lokasi geografis (data spasial). Salah satu metode analisis spasial adalah Model Regresi Logistik Terboboti Geografis (RLTG). Model RLTG adalah bentuk regresi logistik lokal di mana lokasi geografis diperhatikan dan diasumsikan memiliki distribusi Bernoulli. Pendugaan parameter model RLTG menggunakan metode Maximum Likelihood Estimation (MLE) dengan memberikan bobot yang berbeda pada lokasi yang berbeda. Data dalam penelitian ini diperoleh dari publikasi Badan Pusat Statistik, yaitu data dan Informasi Kemiskinan di Provinsi Sulawesi Selatan. Penelitian ini bertujuan untuk mengetahui faktor-faktor yang mempengaruhi status kemiskinan di Provinsi Sulawesi Selatan dengan menggunakan model regresi logistik terboboti geografis dengan fungsi pembobot Kernel bisquare. Hasil penelitian menunjukkan bahwa peubah penjelas yang mempengaruhi status kemiskinan di Provinsi Sulawesi Selatan adalah persentase penduduk tidak bekerja dan persentase rumah tangga pengguna jamban bersama.Abstract. Logistic regression a analysis is used to determine the relationship between categorical response variables with one or more predictor variable assuming that the response is not influenced by geographical location (spatial data). One method of spatial analysis is Geographically Weighted Logistic Regression (GWLR). The GWLR model is a local form of logistic regression where the geographical location is considered and assumed to have a Bernoulli distribution. Estimating parameters of the RLTG model uses the Maximum Likelihood Estimation (MLE) method by giving different weights to different locations. The data were obtained from BPS publications, namely Data and Information on Poverty in South Sulawesi Province. This study aims to determine the factors that influence poverty status in South Sulawesi Province using a geographically weighted logistic regression model with kernel bisquare weighting function. The results showed that the explanatory variables that influence the status of poverty in the province of South Sulawesi were the percentage of the population not working and the percentage of common household toilet users.Keywords: logistic regression, kernel bisquare, GWLR and poverty.

Music, Borders and Nationhood in Algeria

Algeria ◽  
2017 ◽  
Author(s):  
Tony Langlois
Keyword(s):  
Music Industry ◽  
Regional Identity ◽  
Local Form ◽  
Pop Music ◽  
The Core ◽  
Musical Practices ◽  
Western Algeria ◽  
Eastern Morocco ◽  
Musical Genres

This chapter looks at the role of musical genres in the borderland between Oran in Western Algeria and Oujda in Eastern Morocco – in many ways a single cultural and economic zone that is distinct from the core of each of their respective nations. Once this had been the boundary of the Ottoman Empire, but at other times a refuge for political dissidents from either side in their many anti-colonial struggles. Today the cities are economically linked by smuggling and culturally by language, common tradition and strong musical connections – the raï pop music industry is strong on both sides of the border, but as important is the local form of ‘classical’ Andalous music tarab el gharnati and Berber ‘folk’ genres. Music itself marks boundaries of taste, heritage and allegiance, and these often have a tangential relationship to those demarcated by nationalist discourses. The chapter considers the ways in which musical practices preserve a sense of regional identity and allegiance despite the formal closure of the border in 1994. It looks at the economic and cultural consequences of this relationship and at the efforts of the Algerian government to maintain formal boundaries and address the broader context of cross-border cultural flow, not only with Morocco, but, increasingly, the wider mediated world.

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