1,721,568 research outputs found
Geographical Variations in Implementing Result-Based Management to School Improvement Plans in Punjab's Public Secondary Schools
No full text<p>This research examines geographical variations in the implementation of School Improvement Plans (SIPs) utilizing a Results-Based Management (RBM) approach in public secondary schools across Punjab. The study aims to identify differences among districts, focusing on the practices and perceptions of head teachers and senior school teachers regarding the use of RBM in SIPs. Data was collected through surveys, employing a descriptive research methodology. The findings reveal significant success in central Punjab, where schools' physical and co-curricular environments have benefitted markedly from the application of RBM, fostering a positive perception of SIP achievements among educators. The study suggests enhancing alignment between RBM and SIP indicators and improving communication among schools, communities, and stakeholders, advocating the use of ICT technologies to facilitate these improvements.</p>
Inversione Cinematica della Deformazione del Ciclo Sismico Utilizzando l'Interferometria SAR
No full textLa tesi di dottorato fornisce approfondimenti sui meccanismi di deformazione crostale innescati da terremoti intraplacca e interplacca lungo il confine occidentale delle placche indo-europee, lungo la cintura di pieghe e faglie di Sulaiman (SFT) utilizzando tecniche di geodesia spaziale. Il processo è anche applicato per indagare il movimento lungo la Faglia dell'Anatolia Orientale (EAF), al confine tra le placche arabica e anatolica. Inizialmente, utilizziamo le osservazioni di interferometria SAR per comprendere i processi di deformazione lenti e complessi nella zona frontale della cintura di pieghe e faglie di Sulaiman (SFT) in Pakistan, e successivamente indaghiamo la zona occidentale della cintura SFT.
Nella zona frontale della cintura SFT, analizziamo la deformazione associata al terremoto cieco di Dajal del 2015 con magnitudo di momento (Mw) 5.7. Utilizziamo inversioni cinematiche per determinare la distribuzione dello scivolamento sulla rampa frontale e dello scivolamento flessurale lungo le superfici assiali attive per due modelli alternativi: un sistema di piega a doppio piegamento e una piega di propagazione della faglia. In entrambi i modelli, un distacco si biforca in una rampa superficiale a circa 7,5 km di profondità con piegamenti cosismici nella parete rocciosa. Il terremoto di Dajal ha rotto la base della Boundary Thrust sepolta sotto i sedimenti della pianura alluvionale del fiume Indo, rappresentando movimenti di faglia a circa 30 km dalla sua esposizione superficiale più vicina.
Per la zona occidentale della cintura SFT, utilizziamo le osservazioni satellitari Sentinel-1 e ALOS-2 ScanSAR per stimare la deformazione cosismica causata dal terremoto di Harnai del 2021 con magnitudo di momento (Mw) 6.0. La deformazione cosismica superficiale lungo la linea di osservazione SAR (LOS) è stimata a circa 70 mm e 80 mm rispettivamente per interferogrammi ascendenti e discendenti. La modellazione dei dati InSAR rivela uno scivolamento prevalentemente dominato dalla faglia nella direzione di raccorcimento con una componente a scorrimento laterale che è in buon accordo con il contesto tettonico delle faglie trascorrenti di Karahi e Harnai. Le inversioni cinematiche indicano che il 95% dello scivolamento è concentrato tra 3 e 10 km di profondità. Si osserva una deformazione significativa nel blocco meridionale della faglia di Harnai. Questo studio aiuta a comprendere il meccanismo di deformazione crostale nel margine occidentale della cintura SFT.
Inoltre, abbiamo lavorato alla EAF che ospita il moto relativo tra le placche arabica e anatolica e forma un giunto triplo, con la ripartizione dello scivolamento tra la Faglia Nord Anatolica (NAF), la EAF e le faglie dell'Altopiano Turco-Iraniano. La EAF è rimasta bloccata fino alla recente attività sismica iniziata con il terremoto di Elazığ di Mw 6.8 del 24 gennaio 2020, vicino al lago Hazir, continuando con il terremoto di Kahramanmaraş di Mw 7.8 del 6 febbraio 2023, che ha rotto i segmenti di faglia contigui di Erkenek, Pazarcik e Amanos su una distanza complessiva di 310 km. Lo stesso giorno, 9 ore dopo, il terremoto Mw 7.6 ha rotto il ramo laterale sinistro della EAF lungo 150 km. Due settimane dopo, il 20 febbraio, si è verificato un altro terremoto con magnitudo di momento (Mw) 6.4 ad Antakya, alla terminazione meridionale del sistema EAF. L'inversione degli spostamenti della faglia compiuta durante il dottorato fa parte di uno sforzo internazionale per raccogliere osservazioni satellitari spaziali multiparametriche per vincolare la distribuzione spaziale dello scivolamento cosismico della sequenza sismica del 2023. Inoltre, analizziamo l'evoluzione temporale della deformazione della EAF, con l'obiettivo di rilevare il creep sulla EAF, nella sezione che si estende dal segmento di Pütürge al punto triplo di Karliova. Questo studio contribuisce alla stima del potenziale sismico del segmento di Pütürge.The doctoral dissertation titled "Kinematic Inversion of Earthquake Cycle Deformation Using SAR Interferometry" provides insights into the crustal deformation mechanisms triggered by intraplate and interplate earthquakes along the western boundary of the Indian-Eurasian plates, along the Sulaiman Fold-Thrust (SFT) belt utilizing space geodesy techniques. The processing is also applied to investigate the movement along the East Anatolian Fault (EAF), at the boundary of the Arabian-Anatolian plates. First, we use SAR interferometry observations to understand the slow and complex deformation processes at the frontal zone of the Sulaiman Fold-Thrust (SFT) belt, Pakistan, and then we investigate the western zone of the SFT belt.
In the frontal SFT belt, we analyze the deformation associated with the 2015 Moment Magnitude (Mw) 5.7 Dajal blind earthquake. We use kinematic inversions to determine the distribution of slip on the frontal ramp and of flexural slip along active axial surfaces for the forward- and backward-verging two end-member models: a double fault-bend fold system and a fault-propagation fold. In both models, a decollement branches into a shallow ramp at approximately 7.5 km depth with coseismic folding in the hanging wall. The Dajal earthquake ruptured the base of the Boundary Thrust buried under the sediment from the Indus River floodplain, representing fault-bend or fault-propagation folding some 30 km off its nearest surface exposure.
For the western zone of the SFT belt, we use the Sentinel-1, and ALOS-2 ScanSAR satellite observations to estimate the coseismic deformation caused by the 2021 Mw 6.0 Harnai earthquake. The coseismic surface deformation along the line-of-sight (LOS) is estimated as ̴approximately 70 and 80 mm ascending and descending interferograms, respectively. Modeling of InSAR data reveals primarily thrust-dominated slip in up dip direction with a strike-slip component that is in good agreement with the tectonic context of the transpressional Karahi and Harnai faults. Kinematic inversions indicate that 95% of slip is concentrated between 3 and 10 km depth. Major deformation is observed at the southern block of the Harnai fault. This study helps to understand the crustal deformation mechanism at the western margin of the SFT belt.
In addition, we worked at the EAF which accommodates the relative motion between the Arabian and Anatolian plates and forms a triple junction, with slip partitioned among the North Anatolian Fault (NAF), the EAF, and the faults of the Turkish-Iranian Plateau. The EAF remained locked until the recent seismic activity starting with the January 24, 2020, Mw 6.8 Elazığ earthquake, near Hazir Lake, continuing with the February 06, 2023, Mw 7.8 Kahramanmaraş earthquake that ruptured the 310 km long Erkenek, Pazarcik, and Amanos contiguous fault segments. On the same day, 9 hours later, the Mw 7.6 earthquake ruptured the 150 km long left-lateral splay of the EAF. Two weeks later on February 20, another aftershock with Mw 6.4 occurred in Antakya at the southern termination of the EAF system. The finite fault rupture inversion which we accomplished in this PhD study is part of an international effort to collect multi-parametric spaceborne satellite observations to constrain the spatial distribution of the coseismic slip for the 2023 earthquake sequence. Further, we analyze the time evolution of the deformation of the EAF, with the aim to detect creep over segments of the EAF from the Pütürge segment to the Karliova triple junction. This study clarifies the seismic potential of the Pütürge segment
Choosing environmentally friendly transportation in the post-Covid-19 era: The role of personal norms.
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Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Joint Optimization of Semi-Passive IRS Phase Shifts and NOMA Power Coefficients for Cooperative CRNs
Full text linkWe investigate the incorporation of an intelligent reflecting surface (IRS) into cooperative spectrum-sharing cognitive radio networks (CRNs). The CRN consists of a primary user (PU) and multiple secondary users (SUs). There are two transmission phases. In the first phase, the primary transmitter is assisted by an IRS to serve the primary user (PU). This arrangement allows the primary network to allocate a part of its spectrum to the users within the secondary network. In the subsequent phase, the secondary transmitter (ST) employs a non-orthogonal multiple access (NOMA) transmission technique to simultaneously serve the PU and secondary users (SUs). By utilizing a semi-passive IRS, both data transmission to the PU and channel estimation of SUs are performed simultaneously during the first transmission phase. The main objective is to improve the weighted sum-rate of the CRN through a joint optimization of the NOMA power coefficients and IRS phase adjustments during the second transmission phase. We propose an effective algorithm that breaks down the primary sum-rate maximization problem into two sub-problems where IRS phase shifts are computed once at the beginning of the algorithm. Through simulations, we demonstrate that the proposed algorithm yields substantial gains in the sum-rate performance compared to existing methods
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
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