cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Entseuchung von Flüssigmist zur Ausbringung in Wasserschutzgebieten
Creators: name: Doll, Lothar
name: Oechsner, Hans
Publisher: name: LANDTECHNIK
Year: 1997

description: ln den hier vorgestellten Untersuchungen soll versucht werden, durch die biologischen Behandlungsverfahren anaerob-thermophile Faulung und aerob-thermophile Stabilisierung Flüssigmist zu entseuchen. Es werden hierbei die verfahrenstechnischen Parameter erfasst, die zur Abtötung von pathogenen Keimen erforderlich sind. Die ersten Ergebnisse aus diesen Untersuchungen sind vielversprechend und lassen auch die Abtötung von Cryptosporidien erwarten.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
Hypoxia-mediated alterations and their role in the HER-2/neu-regulated CREB status and localization
Creators: name: Steven, André
name: Leisz, Sandra
name: Sychra, Katharina
name: Hiebl, Bernhard
name: Wickenhauser, Claudia
name: Mougiakakos, Dimitrios
name: Kiessling, Rolf
name: Denkert, Carsten
name: Barbara, Seliger
Publisher: name: Universitäts- und Landesbibliothek Sachsen-Anhalt
Year: 2016
Subjects: subject: CREB
subject: HER-2/neu
subject: hypoxia
subject: 570

description: The cAMP-responsive element-binding protein (CREB) is involved in the tumorigenicity of HER-2/neu-overexpressing murine and human tumor cells, but a link between the HER-2/neu-mediated CREB activation, its posttranslational modification and localization and changes in the cellular metabolism, due to an altered (tumor) microenvironment remains to be established. The present study demonstrated that shRNA-mediated silencing of CREB in HER-2/neu-transformed cells resulted in decreased tumor formation, which was associated with reduced angiogenesis, but increased necrotic and hypoxic areas in the tumor. Hypoxia induced pCREBSer133, but not pCREBSer121 expression in HER-2/neu-transformed cells. This was accompanied by upregulation of the hypoxia-inducible genes GLUT1 and VEGF, increased cell migration and matrix metalloproteinase-mediated invasion. Treatment of HER-2/neu+ cells with signal transduction inhibitors targeting in particular HER-2/ neu was able to revert hypoxia-controlled CREB activation. In addition to changes in the phosphorylation, hypoxic response of HER-2/neu+ cells caused a transient ubiquitination and SUMOylation as well as a co-localization of nuclear CREB to the mitochondrial matrix. A mitochondrial localization of CREB was also demonstrated in hypoxic areas of HER-2/neu+ mammary carcinoma lesions. This was accompanied by an altered gene expression pattern, activity and metabolism of mitochondria leading to an increased respiratory rate, oxidative phosphorylation and mitochondrial membrane potential and consequently to an enhanced apoptosis and reduced cell viability. These data suggest that the HER-2/neu-mediated CREB activation caused by a hypoxic tumor microenvironment contributes to the neoplastic phenotype of HER-2/neu+ cells at various levels.
Düngerstimulierte Gasemissionen
Creators: name: Hellebrand, Hans Jurgen
name: Scholz, Volkhard
Publisher: name: LANDTECHNIK
Year: 1997

description: Stickstoffdüngung löst zusätzliche Emissionen von Lachgas und Ammoniak aus. Die Ökobilanz nachwachsender Rohstoffe kann dadurch beeinträchtigt werden. Der Einfluss der Düngergabe auf die Emissionen dieser Gase beim Energiepflanzenanbau wurde untersucht. Nur bei der Düngungsstufe von 100 kg N/ha konnten während eines Zeitraums von etwa drei Wochen signifikant erhöhte Lachgasemissionen mit Flussraten zwischen 0,08 und 0,22 mg m-2 h-1 gemessen werden.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
Wärme-Kraftgewinnung aus Biomasse
Creators: name: Strehler, Arno
Publisher: name: LANDTECHNIK
Year: 1997

description: Biomasse ist vielfältig als Brenn- und Kraftstoff nutzbar, von tierischen Abfällen über Biogas bis zu Raps als Treibstofflieferant im Rahmen des Energiepflanzenbaus. Die größte Verbreitung fand die Holzfeuerung zur Wärmegewinnung. Technische Neuerungen zielten auf die Verbesserung der Feuerungsqualität durch Einbau anspruchsvoller Regelungssysteme ab. 109 verschiedene Scheitholz- und Hackgutfeuerungen konnten in Prüfanstalten die Einhaltung dieser harten Emissionsgrenzwerte einer bayerischen Förderung nachweisen. Die Entwicklung von Holzvergasern läuft im Leistungsbereich von 20 kW bis einige Megawatt weiter. Unter deutschen Bedingungen ist eine Rentabilität nur bei der Beiprodukt- oder Abfallnutzung gegeben.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
On the square root of the centre of the Hecke algebra of type A
Creators: name: Francis, Andrew
name: Jones, Lenny
Publisher: name: arXiv
Year: 2007
Subjects: subject: Representation Theory (math.RT)
subject: Rings and Algebras (math.RA)
subject: FOS: Mathematics
subject: 20C08

description: In this paper we investigate non-central elements of the Iwahori-Hecke algebra of the symmetric group whose squares are central. In particular, we describe a commutative subalgebra generated by certain non-central square roots of central elements, and the generic existence of a rank-three submodule of the Hecke algebra contained in the square root of the centre but not in the centre. The generators for this commutative subalgebra include the longest word and elements related to trivial and sign characters of the Hecke algebra. We find elegant expressions for the squares of such generators in terms of both the minimal basis of the centre and the elementary symmetric functions of Murphy elements.
The Property of Frequency Shift in 2D-FRFT Domain with Application to Image Encryption
Creators: name: Gao, Lei
name: Qi, Lin
name: Guan, Ling
Publisher: name: arXiv
Year: 2021
Subjects: subject: Signal Processing (eess.SP)
subject: FOS: Electrical engineering, electronic engineering, information engineering

description: The Fractional Fourier Transform (FRFT) has been playing a unique and increasingly important role in signal and image processing. In this letter, we investigate the property of frequency shift in two-dimensional FRFT (2D-FRFT) domain. It is shown that the magnitude of image reconstruction from phase information is frequency shift-invariant in 2D-FRFT domain, enhancing the robustness of image encryption, an important multimedia security task. Experiments are conducted to demonstrate the effectiveness of this property against the frequency shift attack, improving the robustness of image encryption.
description: IEEE Signal Processing Letters, 2021
Moçambique: exploração das areias pesadas de Chibuto e novas configurações sociais das comunidades locais
Creators: name: Armando Cumaio
name: Orlando Nipassa
Publisher: name: Zenodo
Year: 2023

description: R E S U M OEste artigo procurou compreender as novas configurações estabelecidas em consequência da exploração das areias pesadas, em Moçambique, na província de Gaza no distrito de Chibuto. A exploração das areias pesadas deu lugar ao reassentamento das comunidades afetadas no novo bairro de Nwahamuza, no qual prevalecem controvérsias entre os diferentes sujeitos envolvidos relativamente aos benefícios da mineração em curso. Uma parte dos reassentados, o governo e a empresa mineradora defendem que a exploração das areias pesadas e consequente reassentamento contribui para a melhoria das condições de vida das comunidades. Outra parte, alguns ativistas sociais e académicos entendem que a exploração destes recursos comprometeu os meios de sobrevivência das comunidades. Do ponto de vista metodológico foi feita uma de revisão de literatura do tipo narrativa com base na seleção e análise descritiva de materiais que abordam sobre o conteúdo estudado e foram administradas entrevistas exploratórias. Os resultados revelam que neste bairro convivem grupos que divergem em relação aos ganhos e ao modelo de reassentamento adotado, contudo existe uma estrutura social estabelecida, novas infraestruturas construídas, serviços públicos instituídos, aspetos culturais atendidos e surgimento de algumas atividades de rendimento que dinamizam a vida. Vive-se algum tipo de convivência e interdependência entre os diferentes grupos estabelecidos, o que pressupõe que em Nwahamuza há novas configurações sociais que se manifestam nas mais variadas formas, desde as relações familiares, de vizinhança, religiosas, culturais e de natureza pública.Palavras-Chave: Areias pesadas; configurações sociais; Chibuto; Nwahamuza.
Active matter in infinite dimensions: Fokker-Planck equation and dynamical mean-field theory at low density
Creators: name: de Pirey, Thibaut Arnoulx
name: Manacorda, Alessandro
name: van Wijland, Frédéric
name: Zamponi, Francesco
Publisher: name: arXiv
Year: 2021
Subjects: subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Disordered Systems and Neural Networks (cond-mat.dis-nn)
subject: Soft Condensed Matter (cond-mat.soft)
subject: FOS: Physical sciences

description: We investigate the behavior of self-propelled particles in infinite space dimensions by comparing two powerful approaches in many-body dynamics: the Fokker-Planck equation and dynamical mean-field theory. The dynamics of the particles at low densities and infinite persistence time is solved in the steady-state with both methods, thereby proving the consistency of the two approaches in a paradigmatic out-of-equilibrium system. We obtain the analytic expression for the pair distribution function and the effective self-propulsion to first order in the density, confirming the results obtained in a previous paper and extending them to the case of a non-monotonous interaction potential. Furthermore, we obtain the transient behavior of active hard spheres when relaxing from equilibrium to the nonequilibrium steady-state. Our results show how collective dynamics is affected by interactions to first order in the density, and point out future directions for further analytical and numerical solutions of this problem.
description: 25 pages, 5 figures
Multiple ring nebulae around blue supergiants
Creators: name: Chita, S. M.
name: Langer, N.
name: van Marle, A. J.
name: Garcia-Segura, G.
name: Heger, A.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: In the course of the life of a massive star, wind-wind interaction can give rise to the formation of circumstellar nebulae which are both predicted and observed in the nature. We present generic model calculations to predict the properties of such nebulae for blue supergiants. From stellar evolution calculations including rotation, we obtain the time dependence of the stellar wind properties and of the stellar radiation field. These are used as input for hydro-calculations of the circumstellar medium throughout the star's life. Here, we present the results for a rapidly rotating 12 solar masses single star. This star undergoes a blue loop during its post main sequence evolution, at the onset of which its contraction spins it up close to critical rotation. Due to the consequent anisotropic mass loss, the blue supergiant wind sweeps up the preceding slow wind into an hour glass structure. Its collision with the previously formed spherical red supergiant wind shell forms a short-lived luminous nebula consisting of two polar caps and a central inner ring. With time, the polar caps evolve into mid-latitude rings which gradually move toward the equatorial plane while the central ring is fading. These structures are reminiscent to the observed nebulae around the blue supergiant Sher 25 and the progenitor of SN 1987A. The simple model of an hour glass colliding with a spherical shell retrieves most of the intriguing nebula geometries discovered around blue supergiants, and suggests them to form an evolutionary sequence. Our results indicate that binarity is not required to obtain them.
description: Accepted for publication in Astronomy and Astrophysics Letters; Associated movie available at http://www.astro.uu.nl/~chita
Low and high frequency approximations to eigenvibrations of string with double contrasts
Creators: name: Babych, Natalia
name: Golovaty, Yuri
Publisher: name: arXiv
Year: 2008
Subjects: subject: Spectral Theory (math.SP)
subject: Numerical Analysis (math.NA)
subject: FOS: Mathematics
subject: 34L20, 65L15, 47A55

description: We study eigenvibrations for inhomogeneous string consisting of two parts with strongly contrasting stiffness and mass density. In this work we treat a critical case for the high frequency approximations, namely the case when the order of mass density inhomogeneity is the same as the order of stiffness inhomogeneity, with heavier part being softer. The limit problem for high frequency approximations depends nonlinearly on the spectral parameter. The quantization of the spectral semiaxies is applied in order to get a close approximations of eigenvalues as well as eigenfunctions for the prime problem under perturbation.
description: 13 pages, 6 plots; submitted for publication; typos added;
Flüssigmist exakt ausbringen
Creators: name: Hügle, Thomas
name: Weißbach, Michael
Publisher: name: LANDTECHNIK
Year: 1997

description: Quer- und Längsverteilung bestimmen die Ausbringqualität bei der Flüssigmistverteilung. Bei der Querverteilung erreichen inzwischen technisch ausgereifte Verteileinrichtungen Verteilqualitäten, die denjenigen von Düngerstreuern kaum nachstehen. Auf die Qualität der Längsverteilung wird jedoch kaum geachtet, obwohl bei ständig zunehmenden Fahrzeugmassen vor allem in hängigem Gelände und bei ungünstigen Bodenverhältnissen verstärkt Schlupf auftritt. Die unterschiedliche Vorfahrtsgeschwindigkeit führt zu sich kleinräumig ändernden Güllegaben. Die Auswirkungen auf die Verteilqualität eines Kompressor- und Pumpentankwagens werden erläutert.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
High-performance lasers for fully integrated silicon nitride photonics
Creators: name: Xiang, Chao
name: Guo, Joel
name: Jin, Warren
name: Peters, Jonathan
name: Xie, Weiqiang
name: Chang, Lin
name: Shen, Boqiang
name: Wang, Heming
name: Yang, Qi-Fan
name: Wu, Lue
name: Kinghorn, David
name: Paniccia, Mario
name: Vahala, Kerry J.
name: Morton, Paul A.
name: Bowers, John E.
Publisher: name: arXiv
Year: 2021
Subjects: subject: Optics (physics.optics)
subject: Applied Physics (physics.app-ph)
subject: FOS: Physical sciences

description: Silicon nitride (SiN) waveguides with ultra-low optical loss enable integrated photonic applications including low noise, narrow linewidth lasers, chip-scale nonlinear photonics, and microwave photonics. Lasers are key components to SiN photonic integrated circuits (PICs), but are difficult to fully integrate with low-index SiN waveguides due to their large mismatch with the high-index III-V gain materials. The recent demonstration of multilayer heterogeneous integration provides a practical solution and enabled the first-generation of lasers fully integrated with SiN waveguides. However a laser with high device yield and high output power at telecommunication wavelengths, where photonics applications are clustered, is still missing, hindered by large mode transition loss, nonoptimized cavity design, and a complicated fabrication process. Here, we report high-performance lasers on SiN with tens of milliwatts output through the SiN waveguide and sub-kHz fundamental linewidth, addressing all of the aforementioned issues. We also show Hertz-level linewidth lasers are achievable with the developed integration techniques. These lasers, together with high-$Q$ SiN resonators, mark a milestone towards a fully-integrated low-noise silicon nitride photonics platform. This laser should find potential applications in LIDAR, microwave photonics and coherent optical communications.
description: 8 pages, 3 figures
Yoshlarda bag'rikenglik g'oyalarini shakllantirishning diniy asoslari
Creators: name: Bahramov Shehroz To'lqin o'g'li, Muhammmad al-Xorazmiy nomidagi Toshkent  Axborot texnologiyalar universiteti Samarqand filiali  "TTKT" fakulteti 23-05-guruh talabasi
name: Ilmiy rahbar: X.U.Samatov
Publisher: name: Zenodo
Year: 2023

description: Maqolada Yoshlarda bag‘rikenglik g‘oyalarini shakllantirishning diniy  asoslari  tarbiyalash  bo‘yicha  pedagogik  va  innovatsion  texnologiyalarini takomillashtirish  jihatlari  yoritiladi.  O‘zbekiston  Respublikasi  Prezidenti Sh.Mirziyoyev  xalqimizning  dunyoqarashida  tobora  chuqur  va  mustahkam  o‘rin egallayotgan bag‘rikenglik tamoyili to‘g‘risida shunday deydi: “Bizning qadimiy va saxovatli  zaminimizda  ko‘p  asrlar  davomida  turli  millat  va  elat,  madaniyat  va  din vakillari  tinch-totuv  yashab kelgan. Mehmondo‘stlik, ezgulik, qalb saxovati  va  tom ma’nodagi bag‘rikenglik bizning xalqimizga doimo xos bo‘lgan va uning mentaliteti asosini tashkil etadi”
Grain-Stripper
Creators: name: Dammer, Sabine
name: Lehmann, Eike
Publisher: name: LANDTECHNIK
Year: 1997

description: Neben den Praxisuntersuchungen zum Leistungsverhalten und zu den Aufnahmeverlusten eines Grain-Strippers in Abhängigkeit von den Bestandesbedingungen Landtechnik 4/1995 wurden sowohl die technischen Einstellparameter des Grain-Strippers systematisch geprüft als auch Laboruntersuchungen zum Gutstromverhalten im Mähdrescher durchgeführt. Somit wird die Einsatzcharakteristik des Grain-Strippers neben den bisher getroffenen Aussagen zur Leistungssteigerung und zu den Aufnahmeverlusten durch Ergebnisse zur technischen Handhabung ergänzt.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
Louis Riel : du personnage historique au personnage mythique et fictif
Creators: name: Paris, Catherine Audrey
Publisher: name: University of British Columbia
Year: 2010

description: This study examines the relationship of Louis Riel's historical character to the myth of the archetypal hero and the subsequent renewal of the myth through the creation of a fictional character, "Riel", in two contemporary literary works: Claude Dorge's play, Le Roitelet (1976) and Rudy Wiebe's novel, The Scorched Wood People (1977). The first chapter deals with the evolution of Riel's "personal myth", showing how Riel's perception of himself as a messianic hero was influenced by Judeo-Christian models. A comparative study of millennial sects and their prophets illustrates that, in keeping with this tradition, Riel was able to translate his personal convictions into action because of the prevailing social and economic conditions. The second chapter focuses on Riel's life and its relation to the model biography of the archetypal hero. Many of the events of Riel's life and the circumstances surrounding them corresponding closely to the model. The third chapter presents an ontological study of Riel's "psychic life". Riel's preoccupation with incest and his evolving attitudes towards archetypal figures such as the "good" or "bad" mother and the "ogre" father are stressed, as they illustrate the universal aspects of the hero's journey. Emphasis is also placed on Riel's joyous acceptance of his approaching death. This chapter closes with a comparison between the mythological hero's journey and the schizophrenic crisis. The fourth chapter examines the fictional character "Riel" as presented by Dorge, in Le Roitelet and by Wiebe, in The Scorched Wood People. An analysis of the narrative technique employed in The Scorched Wood People and the "open composition" of Le Roitelet demonstrates how both authors depict the archetypal visions, attitudes and obsessions of a fictional Riel. The fifth chapter more closely examines certain traits and events attributed to Riel in both works. Some are born of the authors' imagination, while others are based on historical fact. Both authors present Riel as a Christ-figure. In Le Roitelet, Riel is metamorphosised into Christ and in The Scorched Wood People, there is a comparison of certain events of Riel's life to episodes of the life of Christ. Finally, Wiebe's depiction of Riel's acceptance of his death, as well as of his actual execution, is contrasted with Dorge's omission of these events. The authors' respective choices elucidate some aspects of Riel's transformation into a mythical hero. The conclusion examines the conflicting reactions Riel is still capable of arousing today. A series of questions is raised concerning this ambivalence and its effect on Riel's transformation into a mythical hero.
Ab-initio formulation of the 4-point conductance of interacting electronic systems
Creators: name: Bokes, P.
name: Jung, J.
name: Godby, R. W.
Publisher: name: arXiv
Year: 2007
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: We derive an expression for the 4-point conductance of a general quantum junction in terms of the density response function. Our formulation allows us to show that the 4-point conductance of an interacting electronic system possessing either a geometrical constriction and/or an opaque barrier becomes identical to the macroscopically measurable 2-point conductance. Within time-dependent density-functional theory the formulation leads to a direct identification of the functional form of the exchange-correlation kernel that is important for the conductance. We demonstrate the practical implementationof our formula for a metal-vacuum-metal interface.
Evolution of Compact-Binary Populations in Globular Clusters: A Boltzmann Study. I. The Continuous Limit
Creators: name: Banerjee, Sambaran
name: Ghosh, Pranab
Publisher: name: arXiv
Year: 2007
Subjects: subject: Astrophysics (astro-ph)
subject: FOS: Physical sciences

description: We explore a Boltzmann scheme for studying the evolution of compact binary populations of globular clusters. We include processes of compact-binary formation by tidal capture and exchange encounters, binary destruction by dissociation and other mechanisms, and binary hardening by encounters, gravitational radiation and magnetic braking, as also the orbital evolution during mass transfer, following Roche lobe contact. For the encounter processes which are stochastic in nature, we study the probabilistic, continuous limit in this introductory work, deferring the specific handling of the stochastic terms to the next step. We focus on the evolution of (a) the number of X-ray sources N_{XB} in globular clusters, and (b) the orbital-period distribution of the X-ray binaries, as a result of the above processes. We investigate the dependence of N_{XB} on two essential cluster properties, namely, the star-star and star-binary encounter-rate parameters 'Gamma' and 'gamma', which we call Verbunt parameters. We compare our model results with observation, showing that the model values of N_{XB} and their expected scaling with the Verbunt parameters are in good agreement with results from recent X-ray observations of Galactic globular clusters, encouraging us to build more detailed models.
description: 42 pages, 9 figures (1 color figure). Accepted for publication by the Astrophysical Journal August 7, 2007
A Complete Discriminative Tensor Representation Learning for Two-Dimensional Correlation Analysis
Creators: name: Gao, Lei
name: Guan, Ling
Publisher: name: arXiv
Year: 2021
Subjects: subject: Machine Learning (cs.LG)
subject: FOS: Computer and information sciences

description: As an effective tool for two-dimensional data analysis, two-dimensional canonical correlation analysis (2DCCA) is not only capable of preserving the intrinsic structural information of original two-dimensional (2D) data, but also reduces the computational complexity effectively. However, due to the unsupervised nature, 2DCCA is incapable of extracting sufficient discriminatory representations, resulting in an unsatisfying performance. In this letter, we propose a complete discriminative tensor representation learning (CDTRL) method based on linear correlation analysis for analyzing 2D signals (e.g. images). This letter shows that the introduction of the complete discriminatory tensor representation strategy provides an effective vehicle for revealing, and extracting the discriminant representations across the 2D data sets, leading to improved results. Experimental results show that the proposed CDTRL outperforms state-of-the-art methods on the evaluated data sets.
Erkennung und gezielte Kontrolle von Unkraut
Creators: name: Hollstein, Armin
name: Biller, Rainer H.
Publisher: name: LANDTECHNIK
Year: 1997

description: Ökologische und ökonomische Forderungen zielen auf eine weitere Einsparung von chemischen Pflanzenschutzmitteln bei der Unkrautkontrolle. Dies kann gelingen, wenn Unkräuter erkannt und zielflächenorientiert kontrolliert werden. Die Unterscheidung zwischen Pflanzen und Boden ist online mit optoelektronisch arbeitenden Sensoren möglich. Ein nach diesem Prinzip arbeitendes System wird am Institut für Betriebstechnik im Hinblick auf sicheren automatisierten Betrieb weiterentwickelt.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
Urbanização e mudanças climáticas em Moçambique: uma discussão conceptual e crítica para os estudos ambientais
Creators: name: Rogers Justo Mateus Hansine
Publisher: name: Zenodo
Year: 2023

description: R E S U M OUma das principais características das sociedades contemporâneas é o progresso imparável da urbanização e dos seus efeitos sobre a sociedade e o espaço, em particular sobre o clima. Moçambique não é uma excepção. Porém, a relação entre urbanização e mudanças climáticas, não pode ser discutida sem uma análise conceptual e crítica sobre o significado do fenómeno urbano, por um lado, e, as experiências desiguais de urbanização entre o Sul e o Norte Global, por outro lado. Com base na revisão da literatura o artigo argumenta que é forçoso partir-se de uma base conceptual crítica e focos empíricos concretos para estudar a relação entre urbanização e mudanças climáticas, quer a escala global (macro), regional ou nacional (meso) e local ou urbana (micro). Conclui-se neste estudo que a recorrente associação entre urbanização e mudanças climáticas não deve ser generalizada. Como consequência do mero aumento de pessoas que é a caraterística dominante do urbanismo e da urbanização no contexto de países do Sul Global como Moçambique, a contribuição destes espaços e dos seus países em termos de gases de efeito de estufa responsáveis pelas mudanças climáticas tem sido e ainda permanece relativamente baixa. Em contrapartida, o efeito combinado do rápido crescimento demográfico urbano e em muitos casos aliada a falta de planeamento urbano, bem como implementação ineficaz de instrumentos de planeamento urbano, têm sido determinantes para a elevada vulnerabilidade dos espaços urbanos em Moçambique e na generalidade do Sul Global aos eventos extremos climáticos.Palavras-chaves: urbanização, mudanças climáticas, Moçambique
Analysis of organic technologies as alternatives for hydrogen sensing devices currently installed at Kennedy Space Center, Florida
Creators: name: Stoewe, Russell Joseph
Publisher: name: The University of Texas at Austin
Year: 2004
Subjects: Kennedy Space Center
Launch pads
Organic technologies

description: The launch pads located at Kennedy Space Center, Florida, are exposed to some of the harshest conditions known, and any structures and devices located within the blast radius – though protected – must be robust enough to survive. Also, several potentially hazardous materials are present in large quantities in these locations and must be monitored closely. Proven sensor devices are in place, but sensing technologies have advanced rapidly recently. Possibilities exist for the replacement of these devices with more innovative, reliable units. In this analysis, current system configuration was evaluated to determine if performance was adequate, and subsequent results were compared to laboratory experimentation using organic technologies. These organics are relatively inexpensive, reliable, and robust, and such characteristics make them attractive to engineers locating systems in adverse environments. Testing of the devices currently in place demonstrated that the drawbacks that are sometimes associated with organic devices – namely response time, carrier mobility, and sensitivity – were not high priorities for launch pads systems. Furthermore, the testing conducted on the organic devices showed their potential as less expensive substitutes for the inorganics. More complete testing is required, but implementation of organic technology in these systems is likely a worthwhile endeavor
Dynamical 3-Space: Supernovae and the Hubble Expansion - Older Universe and End of Dark Energy
Creators: name: Cahill, Reginald T
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Physics (physics.gen-ph)
subject: FOS: Physical sciences

description: We apply the new dynamics of 3-space to cosmology by deriving a Hubble expansion solution. This dynamics involves two constants; G and alpha - the fine structure constant. This solution gives an excellent parameter-free fit to the recent supernova and gamma-ray burst data without the need for `dark energy' or `dark matter'. The data and theory together imply an older age for the universe of some 14.7Gyrs. Various problems such as fine tuning, the event horizon problem etc are now resolved. A brief review discusses the origin of the 3-space dynamics and how that dynamics explained the bore hole anomaly, spiral galaxy flat rotation speeds, the masses of black holes in spherical galaxies, gravitational light bending and lensing, all without invoking `dark matter' or `dark energy'. These developments imply that a new understanding of the universe is now available.
description: 19 pages 9 Figures. Gamma-ray burst data included. Universe age correction
Thermal QCD Axions across Thresholds
Creators: name: D'Eramo, Francesco
name: Hajkarim, Fazlollah
name: Yun, Seokhoon
Publisher: name: arXiv
Year: 2021
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: Thermal axion production in the early universe goes through several mass thresholds, and the resulting rate may change dramatically across them. Focusing on the KSVZ and DFSZ frameworks for the invisible QCD axion, we perform a systematic analysis of thermal production across thresholds and provide smooth results for the rate. The QCD phase transition is an obstacle for both classes of models. For the hadronic KSVZ axion, we also deal with production at temperatures around the mass of the heavy-colored fermion charged under the Peccei-Quinn symmetry. Within the DFSZ framework, standard model fermions are charged under this symmetry, and additional thresholds are the heavy Higgs bosons masses and the electroweak phase transition. We investigate the cosmological implications with a specific focus on axion dark radiation quantified by an effective number of neutrino species and explore the discovery reach of future CMB-S4 surveys.
description: 61 pages, 15 figures, 1 table, version published in JHEP
Potenzial eines Traktormanagementsystems
Creators: name: Jaufmann, Alexander
Publisher: name: LANDTECHNIK
Year: 1997

description: Das Verbesserungspotenzial des Gesamtsystems Fahrer-Traktor-Gerät-Boden durch Einsatz eines Traktormanagementsystems ist in Anbetracht der Flächenleistungen und des spezifischen Kraftstoffverbrauchs/Fläche beträchtlich. Bei entsprechender Ausführung der optimalen Kombination der Regelungs- und Steuerungsstrategien sind deutliche Verbrauchsminderungen, Steigerungen der Flächenleistung, hohe Auslastung des Gesamtsystems sowie Schonung des Bodens und der Umwelt zu erwarten. Außerdem wird eine spürbare Entlastung des Fahrers von Steuerungs- und Regelungsaufgaben ermöglicht.
description: LANDTECHNIK, Bd. 52 Nr. 6 (1997)
Minderung von Emissionen aus der Tierhaltung
Creators: name: Berg, Werner
Publisher: name: LANDTECHNIK
Year: 1997

description: Die Tierhaltung ist an der Emission bestimmter umweltrelevanter Stickstoff und Kohlenstoffverbindungen stark beteiligt. Hauptsächlich sind dies Ammoniak und Methan. Maßnahmen zur Emissionsminderung unterscheiden sich in ihren Wirkungen und den erforderlichen Aufwendungen teilweise deutlich voneinander. Eine angepasste Fütterung der Tiere wäre als erste Maßnahme zu ergreifen, weitere sollten folgen.
description: LANDTECHNIK, Bd. 52 Nr. 5 (1997)
Auf Kontaktsuche
Creators: name: Stubbe, Lars
name: Bichmann, Mathias
Publisher: name: LANDTECHNIK
Year: 1997

description: ln einem Versuchsstall wurde die eberbezogen Aktivität von Sauen erfasst. Ziel war es, anhand der Daten eine Auswertungsroutine zu entwickeln, welche die individuellen Unterschiede im Verhalten der Tiere berücksichtigt. Durch Bildung von Variablen wurde das Verhalten der Sauen klassifiziert, sodass Rechenmodelle, die eine automatische Trennung von rauschenden und nicht rauschenden Sauen ermöglichen, entwickelt werden konnten. Mit einem zweistufigen Ansatz sollte das neue zur Verfügung stehend Datenmaterial in Form weiterentwickelter Modelle auf Basis tierindividueller Schwellenwerte verwendet sowie mithilfe statistischer Verfahren optimierte Klassifikationsmodelle entwickelt werden.
description: LANDTECHNIK, Bd. 52 Nr. 5 (1997)
Boosting Memory Access Locality of the Spectral Element Method with Hilbert Space-Filling Curves
Creators: name: Araújo, Roger R. F.
name: Gross, Lutz
name: Xavier-de-Souza, Samuel
Publisher: name: arXiv
Year: 2021
Subjects: subject: Mathematical Software (cs.MS)
subject: Distributed, Parallel, and Cluster Computing (cs.DC)
subject: Performance (cs.PF)
subject: FOS: Computer and information sciences
subject: G.4; D.1.3
subject: 86-08 (Primary), 35Q68, 35Q86 (Secondary)

description: We propose an algorithm based on Hilbert space-filling curves to reorder mesh elements in memory for use with the Spectral Element Method, aiming to attain fewer cache misses, better locality of data reference and faster execution. We present a technique to numerically simulate acoustic wave propagation in 2D domains using the Spectral Element Method, and discuss computational performance aspects of this procedure. We reorder mesh-related data via Hilbert curves to achieve sizable reductions in execution time under several mesh configurations in shared-memory systems. Our experiments show that the Hilbert curve approach works well with meshes of several granularities and also with small and large variations in element sizes, achieving reductions between 9% and 25% in execution time when compared to three other ordering schemes.
description: 23 pages, 12 figures
Was leisten Biofilter?
Creators: name: Hartung, Eberhard
name: Jungbluth, Thomas
Publisher: name: LANDTECHNIK
Year: 1997

description: Zur Bestimmung der Höhe der durchschnittlichen Abscheideleistung für Ammoniak und Geruch wurden parallele Untersuchungen an zwei Biofiltern durchgeführt. ln der ersten Messperiode mit 6,5 Jahre altem Filtermaterial lag der berechnete Abscheidegrad von Ammoniak mit etwa 8 % (Biofilter 1) und 34 % (Biofilter 2) recht niedrig. Als Haupteinflussfaktor auf den Abscheidegrad von Ammoniak stellte sich die durchgesetzte Rohluftmenge heraus. Der Abscheidegrad von Geruch zeigte dagegen keine Abhängigkeit vom Rohluftvolumenstrom und bewegte sich in einem Bereich von 60 bis 90 %.
description: LANDTECHNIK, Bd. 52 Nr. 5 (1997)
ISLOM DINIDA TA'LIM-TARBIYAGA OID MA'NAVIY VA AXLOQIY  G'OYALAR TUSHUNCHASI
Creators: name: Abdimurodov Shaxzod Davron o'g'li, TATU Samarqand filiali "TTKT'' fakulteti  23-05 guruh talabasi
name: Ilmiy rahbar: X.U.Samatov
Publisher: name: Zenodo
Year: 2023

description: Maqolada  Sharq  mutafakkirlarining  ta’lim-tarbiya,  odob-axloq masalalaridagi  qarashlari,  islomda  bolalar  tarbiyasi  to’g’risida  so’z  yuritilgan. Shuningdek,  Sharq  mutafakkirlarining  ijodiy  faoliyatidagi  ta’lim-tarbiyaga  oid yondashuvlar,  g’oyalar,  qarashlarni  yosh  avlodning  ongiga  singdirishda  tarbiya usullari va vositalarini bilish, hayotda ulardan to’g’ri foydalanish pedagogik ta’lim jarayonida  o’qituvchining  pedagogik  mahoratidagi  muhim  xususiyatlardan  biri ekanligi ochib berilgan. Kalit so’zlar: axloqiy qoida, tarbiya,  odob, barkamol inson, insonparvarlik, ma’naviy fazilatlar, umuminsoniy qadriyatlar, milliy qadriyat, milliy tafakkur, islom madaniyati.
The Horizontal Symmetry for Neutrino Mixing
Creators: name: Lam, C. S.
Publisher: name: arXiv
Year: 2008
Subjects: subject: High Energy Physics - Phenomenology (hep-ph)
subject: FOS: Physical sciences

description: We argue that the best way to determine horizontal symmetry is from neutrino mixing, and proceed to show that the only finite group capable of yielding the tri-bimaximal mixing for all Yukawa couplings is $S_4$, or any group containing it. The method used is largely group theoretical, but it can be implemented by dynamical schemes in which the Higgs expectation values introduced to break $S_4$ spontaneously are uniquely determined up to an unknown scale for each.
description: version to appear in Phys. Rev. Letts.: one reference added and some slight rephrasing of sentences
Architectural Challenges in Migrating Plan-driven Projects to Agile
Creators: name: Menon, Vinod
name: Sinha, Roopak
name: MacDonell, Stephen
Publisher: name: arXiv
Year: 2021
Subjects: subject: Software Engineering (cs.SE)
subject: FOS: Computer and information sciences

description: Software development has steadily embraced agile software development methodology/method (ASDM) and has been moving away from the plan driven software development methodology (PDM) approaches like waterfall. Given the iterative nature of agile development, the integration of software architecture into the agile way has become challenging. This research identifies the challenges of having a robust architecture in projects already executed by plan driven methods and new projects likewise by conducting a literature review and a case study analysis. The ensuing analysis finds that there are three major areas: people, process and technology, in which these challenges could be mapped.
description: Conference Proceeding, 5 pages, 2 tables
Comparative molecular dynamics simulation of apo and holo forms of the P53 mutant C176F: a structural perspective
Creators: name: Cathryn, R. Hephzibah
name: Doss, C. George Priya
Publisher: name: Taylor & Francis
Year: 2023
Subjects: subject: Biophysics
subject: Biochemistry
subject: Physical Sciences not elsewhere classified
subject: Cell Biology
subject: Genetics
subject: FOS: Biological sciences
subject: Molecular Biology
subject: Pharmacology
subject: Chemical Sciences not elsewhere classified
subject: Biological Sciences not elsewhere classified
subject: Developmental Biology
subject: Cancer
subject: Infectious Diseases
subject: FOS: Health sciences
subject: Computational Biology

description: Zinc fingers represent a highly diverse structural domain, with P53 being a notable example among zinc-dependent transcription factors. The folding patterns of proteins in the cell are heavily influenced by the concentration of zinc. The potential for zinc loss arises due to its dysregulation and the frequent occurrence of tumorigenic P53 mutations. This could lead to significant consequences such as protein misfolding and a reduction in tumor-suppressing capabilities. To gain deeper insights into the structural conformation, stability, flexibility, and compactness of the zinc-binding mutation C176F, a comprehensive comparative computational analysis was conducted on the wildtype (WT) and mutant (MT) P53 in the presence (Holo) and absence (Apo) of zinc. This analysis was performed using molecular dynamic simulation. The overall observation was that the mutation in C176F reduces the metal binding affinity and results in less stability in the Apo and Holo P53 MT protein.
Le coblas esparsas occitane anonime. Studio ed edizione dei testi
Creators: name: Petrossi, Antonio
Publisher: name: Università degli Studi di Napoli Federico II
Year: 2009

description: La cobla esparsa rappresenta un diverso modo di approccio alla poesia, in quanto la pratica lirica non costituisce più un momento di partecipazione al rito di una collettività entro la quale si condividono i valori e le ideologie che nei versi sono espressi, ma si avanzano nuove istanze poetiche, segno delle nuove mutazioni sociali. La storia di questo genere lirico sembra procedere lungo due linee direttive, il cui momento d’interferenza è rappresentato dalla dimensione della superficie lirica. Al piano nel quale appartengono le tipologie testuali che assorbono le forme pertinenti dell’ideologia cortese e le rielaborano si contrappone il piano in cui sono ordinati i testi che invece esulano dallo spazio cortese. E lontano dallo spazio cortese si realizza il momento della loro rappresentazione. Lo studio si presenta come la prima raccolta organica di tutti i testi che costituiscono la tradizione anonima della poesia in forma breve della lirica occitana e affronta la storia di un genere letterario che ha sempre avuto una scarsa considerazione critica. All’edizione dei testi si affiancano le sezioni che studiano il corpus dei testi nei loro aspetti ecdotici, storici e morfologici, necessari strumenti che permettono di ricostruire in modo esaustivo le forme della lirica minore.
Weak momentum scattering and the conductivity of graphene
Creators: name: Culcer, Dimitrie
name: Winkler, R.
Publisher: name: arXiv
Year: 2008
Subjects: subject: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
subject: FOS: Physical sciences

description: Electrical transport in graphene offers a fascinating parallel to spin transport in semiconductors including the spin-Hall effect. In the weak momentum scattering regime the steady-state density matrix contains two contributions, one linear in the carrier number density $n$ and characteristic scattering time $τ$, the other independent of either. In this paper we take the Liouville equation as our starting point and demonstrate that these two contributions can be identified with pseudospin conservation and non-conservation respectively, and are connected in a non-trivial manner by scattering processes. The scattering term has a distinct form, which is peculiar to graphene and has important consequences in transport. The contribution linear in $τ$ is analogous to the part of the spin density matrix which yields a steady state spin density, while the contribution independent of $τ$, is analogous to the part of the spin density matrix which yields a steady state spin current. Unlike in systems with spin-orbit interactions, the $n$ and $τ$-independent part of the conductivity is reinforced in the weak momentum scattering regime by scattering between the conserved and non-conserved pseudospin distributions.
description: 10 pages. Accepted for publication in Phys. Rev. B
Messung der Schwebstaubkonzentration in Stallungen
Creators: name: Driemer, Jörg
name: Van Den Weghe, Herman
Publisher: name: LANDTECHNIK
Year: 1997

description: Die gravimetrische kontinuierliche Schwebstaubmessung wurde für eine erste Analyse der Staubsituation in verschiedenen Ställen eingesetzt. Bei der Aufzeichnung von Tagesverläufen der Schwebstaubkonzentration mit dem TEOM 1400a konnten kurzfristig auftretende Konzentrationsmaxima zuverlässig nachgewiesen werden. Der charakteristische Tagesverlauf der Staubkonzentration im Broiler-Stall wird wesentlich durch Fütterung, Kontrollgänge und Lichteinwirkung geprägt. ln zwei Versuchsställen für Mastschweine war die Abhängigkeit von externen Einzelereignissen geringer; spezifische Aktivitäten einzelner Tiere überlagerten andere Einflussfaktoren.
description: LANDTECHNIK, Bd. 52 Nr. 5 (1997)
Leistung und Arbeitsorganisation in großen Melkständen
Creators: name: Barth, Kerstin
name: Grimm, Hartmut
Publisher: name: LANDTECHNIK
Year: 1997

description: ln fünf Betrieben mit insgesamt neun Melkständen (zehn Melker) wurden langsam melkende Kühe, deren Melkdauer deutlich über dem Median aller Melkdauern lag, markiert . Diese Kennzeichnung kann dem Melker Orientierungshilfen geben, um den Melkablauf in Gruppenmelkständen zu beschleunigen. Dabei werden entsprechend die Rastzeiten verkürzt , wenn genügend „Arbeitsvorrat“ (zusätzliche Melkplätze) vorhanden ist. Ist dies nicht der Fall, wird die gewonnene Zeit für eine intensivere Betreuung der einzelnen Kuh verwendet (Euterkontrolle, Nachmelken). Bei Neuanlagen könnten mehr Melkplätze und eine höhere Melkleistung eingeplant werden, wenn entsprechende Informationsmöglichkeiten für den Melker vorhanden sind.
description: LANDTECHNIK, Bd. 52 Nr. 5 (1997)
Interior of Distorted Black Holes
Creators: name: Frolov, Valeri P.
name: Shoom, Andrey A.
Publisher: name: arXiv
Year: 2007
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: We study the interior of distorted static axisymmetric black holes. We obtain a general interior solution and study its asymptotics both near the horizon and singularity. As a special example, we apply the obtained results to the case of the so-called `caged' black holes.
description: 12 pages, 16 figures
Fortalecimento do Capital Social como meio de preservação do meio ambiente em Moçambique, Município de Matola (Moçambique)
Creators: name: Alice Alfredo Zua Nunes
Publisher: name: Zenodo
Year: 2023

description: RESUMOO saneamento do meio é um dos factores fundamentais para a vida do ser humano. No entanto, têm-se notado que este serviço básico é deficiente em muitos bairros da Cidade da Matola. Vários estudos defendem que campanhas de sensibilização podem ajudar a minimizar o problema e permitir uma convivência harmoniosa com o meio ambiente. Outros estudos também defendem a necessidade de fortalecer o capital social das comunidades por estar ligado a vida social, redes, normas e confiança que permitem os participantes actuar juntos de maneira colectiva. O presente artigo teve como objectivo analisar o índice do capital social no Bairro de Khongolote, situado no Posto Administrativo de Infulene, Município da Matola e estudar a percepção dos moradores sobre os problemas ambientais com referência para a gestão de resíduos sólidos. Aplicou-se a metodologia qualitativa (entrevistas semi-estruturadas) e quantitativas (inquéritos) a uma amostra de 396 agregados familiares que representam 95% do nível de confiança. De seguida, fez-se o cálculo do índice do capital social. Concluiu-se que o nível de capital social do bairro Khongolote é médio e, quando se fala de actividades conjuntas, o seu nível de participação é muito baixo. Verificou-se que ao nível do bairro, há um sistema deficiente de recolha de lixo em alguns quarteirões, fazendo com que as pessoas procurem locais alternativos para o depósito dos resíduos sólidos. Há uma necessidade de se perceber o que faz com que a confiança nas autoridades seja baixa e como fortalecer a participação conjunta em actividades comuns a nível do bairro.Palavras-Chave: Capital social, saneamento ambiental.