cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Galaxy Infall by Interacting with its Environment: a Comprehensive Study of 340 Galaxy Clusters
Creators: name: Gu, Liyi
name: Wen, Zhonglue
name: Gandhi, Poshak
name: Inada, Naohisa
name: Kawaharada, Madoka
name: Kodama, Tadayuki
name: Konami, Saori
name: Nakazawa, Kazuhiro
name: Xu, Haiguang
name: Makishima, Kazuo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Astrophysics of Galaxies (astro-ph.GA)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: To study systematically the evolution on the angular extents of the galaxy, ICM, and dark matter components in galaxy clusters, we compiled the optical and X-ray properties of a sample of 340 clusters with redshifts $<0.5$, based on all the available data with the Sloan Digital Sky Survey (SDSS) and {\it Chandra}/{\it XMM-Newton}. For each cluster, the member galaxies were determined primarily with photometric redshift measurements. The radial ICM mass distribution, as well as the total gravitational mass distribution, were derived from a spatially-resolved spectral analysis of the X-ray data. When normalizing the radial profile of galaxy number to that of the ICM mass, the relative curve was found to depend significantly on the cluster redshift; it drops more steeply towards outside in lower redshift subsamples. The same evolution is found in the galaxy-to-total mass profile, while the ICM-to-total mass profile varies in an opposite way. We interpret that the galaxies, the ICM, and the dark matter components had similar angular distributions when a cluster was formed, while the galaxies travelling interior of the cluster have continuously fallen towards the center relative to the other components, and the ICM has slightly expanded relative to the dark matter although it suffers strong radiative loss. This cosmological galaxy infall, accompanied by an ICM expansion, can be explained by considering that the galaxies interact strongly with the ICM while they are moving through it. The interaction is considered to create a large energy flow of $10^{44-45}$ erg $\rm s^{-1}$ per cluster from the member galaxies to their environment, which is expected to continue over cosmological time scales.
description: 55 pages, 22 figures, accepted for publication in Astrophysical Journal
Open data and open publications in H2020
Creators: name: Modolo, Irene
Publisher: name: Zenodo
Year: 2023

description: Researchers often find themselves disoriented in the face of the various policies and obligations set by funding bodies, research centres and journals. This presentation will provide an overview of the guidelines and requirements to be met in order to publish the research results of projects funded by the European Commission, in particular within NFFA-Europe. Moreover, the presentation contains some useful tips to do and benefit from open science.
Inclusiveness Practices in Contemporary Feminist Narratives
Creators: name: Rahimi, Gohar Parissa
Publisher: name: DIVE-IN – An International Journal on Diversity and Inclusion
Year: 2023

description: Feminisms have gained increasing visibility in the last decade, becoming part of public and media discourse in Western societies. The popularisation of gender discourses has been accompanied by the growing production of feminist guides, handbooks and manifestoes produced by journalists, influencers and celebrities to spread feminism among young women. Nevertheless, the actual articulations of feminist narratives are often intertwined with neoliberal postfeminist discourses on individualism that reinforce existing hierarchies of power. These narratives are opposed by others that question individualism and deconstruct existing power hierarchies. This paper explores the problematic outcomes of the feminist entanglement with neoliberalism, which result in the flattening of gender, race and class differences. Then, the neoliberal postfeminist dominant narrative is contrasted by and confronted with a critical analysis of two contemporary feminist manifestoes that, in different ways, oppose individualism and deconstruct existing power structures through intersectional inclusive practices.
description: DIVE-IN – An International Journal on Diversity and Inclusion, V. 2 N. 2 (2022): Interpretare e costruire mondi: pratiche inclusive a varie latitudini
Modelling and Impact of Solar Eclipses on PV Energy Production
Creators: name: Ascencio-Vásquez, J.
name: Amaro E Silva, R.
name: Urrejola, E.
name: Brecl, K.
name: Topic, M.
Publisher: name: WIP
Year: 2021
Subjects: PV Systems – Modelling, Design, Operation and Performance
Operation, Performance and Maintenance of PV Systems

description: 38th European Photovoltaic Solar Energy Conference and Exhibition; 1088-1091
description: Total solar eclipses are events that rarely occur but can highly impact the operation of electrical grids. During a few minutes, the Sun can be fully covered by the moon, blocking the sun rays towards the Earth surface. This phenomenon has a considerable effect on the electrical generation of PV systems and, depending on the level of deployment of this technology, can compromise the stability of electrical grids, causing perturbations and making the grid prone to failures. For this reason, the accurate yield forecasting of PV plants during a solar eclipse can help grid planners to handle this event in the most cost-efficient way. In this work, we present preliminary results of the modelling and quantification of PV plants energy production and losses during total solar eclipses. The TDP model is used to model the PV performance under clear-sky conditions. The results show around 10% of daily PV energy yield and 13% of daily irradiation during the total solar eclipse seen in Chile on the 14th December 2020.
A Note on Iterations-based Derivations of High-order Homogenization Correctors for Multiscale Semi-linear Elliptic Equations
Creators: name: Vo, Khoa
name: Muntean, Adrian
Publisher: name: arXiv
Year: 2016
Subjects: subject: Analysis of PDEs (math.AP)
subject: Functional Analysis (math.FA)
subject: FOS: Mathematics
subject: 35B27, 35C20, 76M30, 35B09

description: This Note aims at presenting a simple and efficient procedure to derive the structure of high-order corrector estimates for the homogenization limit applied to a semi-linear elliptic equation posed in perforated domains. Our working technique relies on monotone iterations combined with formal two-scale homogenization asymptotics. It can be adapted to handle more complex scenarios including for instance nonlinearities posed at the boundary of perforations and the vectorial case, when the model equations are coupled only through the nonlinear production terms.
description: 1 figure
Suitable Silicon Solar Cell Technologies for Use in Space Applications
Creators: name: Mihailetchi, V.D.
name: Peter, C.
name: Koduvelikulathu, L.J.
name: Roescu, R.
name: Kopecek, R.
name: Rouhani, K.
name: Pop, S.C.
name: Okandan, M.
Publisher: name: WIP
Year: 2021
Subjects: PV Systems – Modelling, Design, Operation and Performance
Concentrators, PV for Space Applications, and TPV

description: 38th European Photovoltaic Solar Energy Conference and Exhibition; 1092-1095
description: In this paper, we present an overview of various commercially or R&D available c-Si solar cell concepts and find the most suitable technologies for space applications. First, we use a three-dimensional device simulation tool and fit a SRH recombination model that best predicts the relative degradation of a known p-type and n-type solar cells upon proton irradiation with various energies and fluences. Then, the resulted SRH recombination parameters are used to predict the degradation rate and end-of-lifetime (EOL) performance of various cell technologies for any given space mission providing as input the equivalent proton and electron fluences. Based on this study, we are able to indentify the properties and key design features of c-Si cells most suited for use in space applications.
Rettifiche per un linguaggio inclusivo: i segni dell’uguaglianza e della diversità nella lingua coreana
Creators: name: Jung, Imsuk
Publisher: name: DIVE-IN – An International Journal on Diversity and Inclusion
Year: 2023

description: Il presente lavoro ha l’obiettivo di richiamare maggior attenzione sulle principali insidie linguistiche prodotte dalla società coreana e di proporre una riflessione sul linguaggio non discriminatorio, che va sempre di più verso una direzione inclusiva nei confronti di qualsiasi individuo o gruppo sociale, attribuendo pari dignità e visibilità a tutti. Intendiamo procedere con la raccolta di un corpus di termini e locuzioni della lingua coreana ricorrenti nella descrizione di persone o gruppi di individui a rischio discriminazione. In questa sede le ricerche si basano sulle indagini effettuate dalla SFWF (Seoul Foundation of Women Family), istituita nel 2002, verranno analizzate unità selezionate dal gruppo di lavoro della fondazione con l’obiettivo di proporre la rettifica di termini rappresentanti una società patriarcale e fortemente maschilista. Le riflessioni di queste ricerche invitano, dunque, a realizzare piccoli passi per contribuire a una più ampia cognizione sociale del rispetto.
description: DIVE-IN – An International Journal on Diversity and Inclusion, V. 2 N. 2 (2022): Interpretare e costruire mondi: pratiche inclusive a varie latitudini
Representation of Male-Male Desire in Tachibana Sotoo’s Nanshoku Monogatari (1952)
Creators: name: Taddei, Marco
Publisher: name: DIVE-IN – An International Journal on Diversity and Inclusion
Year: 2023

description: Tachibana Sotoo (1894–1959), a novelist unknown outside Japan and not widely read in Japan either, was among the writers who depicted various forms of nonheteronormative sexuality in his work. Best known for his ghost stories later adapted into films by director Nakagawa Nobuo (1905-1989), Tachibana also published Nanshoku Monogatari (A Tale of Male Love) in 1952. This novel, largely inspired by the author’s own experience, humorously recounts his crushes on his attractive classmates. The appreciation of teenage, androgynous beauty is central in this work where same-sex attraction is presented without moral judgment. The aim of this paper is to examine how Tachibana represents male-male desire in Nanshoku Monogatari and to investigate whether the novel challenged heteronormativity in post-war Japanese society. The novel will therefore also be analysed in relation to the homoerotic literature born in the Edo period (1603-1868) and later developed in pre-war modernist literature, in which romantic relationships between schoolboys were often depicted.
description: DIVE-IN – An International Journal on Diversity and Inclusion, V. 2 N. 2 (2022): Interpretare e costruire mondi: pratiche inclusive a varie latitudini
Technical Performance Evaluation of BIPV and BAPV Systems
Creators: name: Ollas, P.
name: Persson, J.
name: Kovács, P.
Publisher: name: WIP
Year: 2021
Subjects: PV Systems – Modelling, Design, Operation and Performance
Operation, Performance and Maintenance of PV Systems

description: 38th European Photovoltaic Solar Energy Conference and Exhibition; 1071-1076
description: In this work, seven residential solar photovoltaic systems are evaluated for their technical performance under a full year’s operation in Sweden, at latitude 57.72. The system technologies are selected to reflect available products on the Swedish market and include three building attached (BAPV) and five building-integrated (BIPV) systems. The evaluation is done for the performance ratio (PR) and temperature corrected PR, and the results highlight the seasonal variation and effect from the modules' temperature dependency. The annual losses due to operation at elevated temperature are also quantified for each system, using a temperature-compensated power output, and the results show that the losses are 1-3.2% on the measured yield, depending on the PV technology and extent of roof integration (BIPV or BAPV).
Gibt es Anzeichen einer religiösen Erweckung in unserer Zeit?
Creators: name: Hervieu-Léger, Danièle
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 9 Nr. 11 (1973): Concilium: Internationale Zeitschrift für Theologie, Band 9, Heft 11
Project Managers' Leadership Quality and Project Success in Construction Industry: The Case of Category A Construction Firms in Ethiopia
Creators: name: Amanuel, Haile
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: The purpose of this study is to examine the relationship between leadership competences of project managers and project success of construction projects undertaken by big construction companies in Ethiopia. The study adopted cross-sectional survey descriptive research with quantitative approach to test the research hypotheses. Using systematic random sampling, a sample of Fourteen (14) category A construction companies that have been implementing construction projects in recent years was selected. Forty two (42) project managers/leaders were obtained as a sample for the study. The result shows that project managers' emotional (EQ) and managerial (MQ) competences of leadership have statistically significant positive relationship with project success. However, no statistically significant relationship was found between project managers' intellectual (IQ) competence and project success. The overall finding of this study suggests that project manager leadership competences play important roles in achieving project success. The study recommends that companies should consider leadership competences when recruiting and assigning project managers for projects.
Data-Driven Assessment of Soiling Loss in Photovoltaic Plants
Creators: name: Yurtseven, K.
name: Karatepe, E.
name: Deniz, E.
Publisher: name: WIP
Year: 2021
Subjects: PV Systems – Modelling, Design, Operation and Performance
Operation, Performance and Maintenance of PV Systems

description: 38th European Photovoltaic Solar Energy Conference and Exhibition; 1077-1080
description: Utilizing reliable monitoring and available data in order to ensure that the PV plants become bestreturn-on investments is possible thanks to ever going developments in data-driven algorithms. One of the major challenges in PV power generation is the soiling events caused by the dusty environments and climatic conditions resulting in the reduction of the performance of the PV plants. Since the soiling is a complex event whose characteristics are forged by a number of external stochastic phenomena, a number of studies are conducted by researchers. Soiling in PV plants is a continuous subject that emerges over time as an important drawback in the performance of the PV plants. In that point, it is crucial to automatically determine appropriate cleaning schedules in order to achieve a high-profit PV plant operation. In this study, a method is presented which only uses the DC current inputs of the inverters to determine the soiling loss without using any environmental sensors. The proposed method is tested by conducting experimental works on three different PV plants which are connected to the power grid in Turkey. The results show that the proposed method is effective for analyzing the performance reductions due to soiling in the PV plants without using any environmental sensors.
I AM WHAT I AM: Manga, corpi e identità di genere
Creators: name: La Marca, Paolo
Publisher: name: DIVE-IN – An International Journal on Diversity and Inclusion
Year: 2023

description: Obiettivo principale di questo articolo è analizzare opere che hanno affrontato il tema dell’identità di genere – nella fattispecie, la figura del josō no shōnen/otoko (ragazzi/uomini in abiti femminili) – in una selezione di manga apparsi su riviste generaliste per un pubblico maschile, in un periodo compreso tra il 1969 e il 1976. Sebbene i fumetti per ragazze e donne abbiano sempre affrontato questioni come l’identità trans, la disforia di genere e l’identità di genere, può risultare ancora più interessante esaminare queste stesse tematiche da un punto di vista maschile. Ho selezionato opere di Tatsumi Yoshihiro, Kamimura Kazuo, Sakaki Masaru etc., artisti che, sebbene amati dal pubblico dei lettori, sono stati poco analizzati – o, in alcuni casi, completamente ignorati – dalla critica, sia giapponese che estera. Per tale motivo, credo che queste opere possano offrire nuove prospettive d’analisi su questioni estremamente attuali come l’inclusione e l’identità trans.
description: DIVE-IN – An International Journal on Diversity and Inclusion, V. 2 N. 2 (2022): Interpretare e costruire mondi: pratiche inclusive a varie latitudini
INTERSECT_814487 D5.2 Risk assessment and risk-mitigation reports
Creators: name: Lunardelli, Valerio
name: Calzolari, Arrigo
name: Di Berardo, Mara
name: Neri, Luisa
Publisher: name: Zenodo
Year: 2020
Subjects: materials modelling software
device

description: During the lifetime of a project, many unforeseen or unfortunate events can occur, that can hinder the good implementation of the planned activities. It is therefore a main task for the management of the project to identify, evaluate, monitor, and mitigate the upcoming of such events, and this is done by way of a Risk assessment and mitigation plans. In its work plan, INTERSECT identified a certain number of risks, related to scientific and technological advancement and to management of the consortium, which are reassessed in this deliverable D5.2 Risk assessment and risk-mitigation reports, output of WP 5 Management and Project Coordination (Leader CNR). Moreover, unfortunate events did occur in the last few months in Europe and worldwide, such as the outburst of a global pandemic. This of course affected the people’s lives firstly, and their ability to work and meet secondly. Therefore, new unforeseen risks are added to the previous existing list. A continuous commitment to update and monitor the threats and setbacks that can affect the development of the tasks for which the project is funded is taken by the management and all partners according to guidelines and tools described below.
Terrain-Following Single-Axis Tracking PV Systems: Advantages and Performance Analysis
Creators: name: Shishavan, A.A.
name: Abbaraju, V.R.
name: Dobos, A.
name: Borrelli, F.
Publisher: name: WIP
Year: 2021
Subjects: PV Systems – Modelling, Design, Operation and Performance
Operation, Performance and Maintenance of PV Systems

description: 38th European Photovoltaic Solar Energy Conference and Exhibition; 1060-1064
description: In this work, we evaluated the performance of the north-south terrain-following single-axis tracking photovoltaic systems on multiple ground undulation types. Such tracker systems are gaining interest as a viable solution to significantly reduce the costly grading operations and qualify more lands for the deployment of photovoltaic systems. However, the performance of such systems may decrease because of the resulting less optimal incidence angle of direct light, the mismatch between modules, and potential row-to-row shading. Our sensitivity study suggests that while terrainfollowing trackers can have a reasonable performance loss (or even performance gain) on a certain range of north-south slopes, their performance may drop significantly at high north-south slopes. Furthermore, high angles between adjacent torque tubes (tubes) within a tracker can increase the mismatch between the modules and consequently reduce the energy production of the system. Also, the angle between the tubes can cause additional row-to-row shading on the modules if standard tracking algorithms are used. Therefore, in designing terrain-following tracker solutions, special consideration needs to be given to undulation levels and ground slopes to avoid high performance losses.
Analysis of the Irradiance Non-Uniformity on the Performance of Vertical and Tilted Bifacial PV Module Arrays
Creators: name: Calcagnotto Mascarello, M.
name: Kenny, R.P.
name: Lyubenova, T.S.
name: Gracia Amillo, A.M.
name: Lopez-Garcia, J.
Publisher: name: WIP
Year: 2021
Subjects: PV Systems – Modelling, Design, Operation and Performance
Operation, Performance and Maintenance of PV Systems

description: 38th European Photovoltaic Solar Energy Conference and Exhibition; 1065-1070
description: The bifacial crystalline silicon (Si) photovoltaic (PV) module market has grown significantly in recent years thanks to their increased performance in comparison to conventional monofacial PV modules. Nonetheless, due to the multiple variables that influence the performance of such devices, their characterization lacks consistency. In particular, when it comes to bifacial systems operating under real operating conditions there are voids to be filled in order to guarantee meaningful characterization for the long-term energy yield assessment. This can be achieved by the analysis of field data for different technologies, rack configurations and climates [1, 2]. Based on previous work on single bifacial modules this work extends the analysis of the behaviour of the rear-side irradiance of outdoor bifacial test arrays and their energy yield during one year. The rear irradiance non-uniformity (NU) analysis is crucial for long-term degradation rate and bifacial gain predictions (and hence bankability) in medium and large utility-scale solar systems with high-efficiency bifacial modules.
Documenting De-colonial Practices through Comics: Joe Sacco’s Paying the Land
Creators: name: Arioli, Mattia
Publisher: name: DIVE-IN – An International Journal on Diversity and Inclusion
Year: 2023

description: Being a “cool medium” (McLuhan 1964) comics provide less sensory information and therefore demands more involvement and/or ‘completion’ by the reader/viewer. They ask for slowness, as the viewer has to recompose, understand, and question the existing relation between words and pictures. This mode of fruition contrasts with the rapid way we generally consume news (even though they might use a similar visual-verbal syntax). Their slowness help comics visualize the stories of those who have been ignored/neglected by the international arena and makes the reader witness human rights violation and abuses (Chute 2016). This paper aims to discuss how Joe Sacco’s Paying the Land (2020) (re)narrates the past and present relationship between Aboriginal people and (all) Canadians. This comics testifies to the existence of allied depictions (as Joe Sacco is not of Aboriginal descent and does not appropriate Indigenous stories) that aim to break (even controversially) the silence about past and present sufferings of the Dene peoples in Canada, but also shows forms of Indigenous activism and healing practices that aim to re-construct community ties.
description: DIVE-IN – An International Journal on Diversity and Inclusion, V. 2 N. 2 (2022): Interpretare e costruire mondi: pratiche inclusive a varie latitudini
Arabo standard e ʿāmmiyya: esclusione e inclusione nei fumetti di ʿUmar Khūrī
Creators: name: Aiello, Giulia
Publisher: name: DIVE-IN – An International Journal on Diversity and Inclusion
Year: 2023

description: Il fumetto per adulti si è sviluppato nei paesi arabi come un genere letterario indipendente e viene spesso utilizzato come uno strumento di critica sociale. Questo nuovo prodotto culturale tende a prediligere dal punto di vista linguistico l’uso del dialetto (‘āmmiyya) come varietà scritta al posto dell’arabo standard (Høigilt 2017a, Høigilt 2019, De Blasio 2020, inter alia). Tuttavia, nei fumetti Ṣālūn Ṭāriq al-Khurāfī (Il salone di Ṭāriq al-Khurāfī) e nel suo prequel Yūtūbiā (Utopia), entrambi dell’autore libanese ‘Umar Khūrī, trova spazio anche lo standard, usato da alcuni personaggi al posto del vernacolare. A partire dall’idea di lingua come marca identitaria e risorsa simbolica (Suleiman 2013), l’obiettivo dello studio è indagare la relazione tra la varietà linguistica e l’identità dei diversi personaggi ed esaminare di quali funzioni sociali e politiche la lingua è investita all’interno delle società immaginarie di questi fumetti.
description: DIVE-IN – An International Journal on Diversity and Inclusion, V. 2 N. 2 (2022): Interpretare e costruire mondi: pratiche inclusive a varie latitudini
La professionalizzazione dell’industria musicale araba indipendente: contro il paradigma della music of resistance
Creators: name: Fischione, Fernanda
Publisher: name: DIVE-IN – An International Journal on Diversity and Inclusion
Year: 2023

description: Questo contributo intende gettare luce su due aspetti dell’industria discografica araba indipendente degli ultimi dieci anni: da un lato, la perdita di credito del paradigma accademico della music of resistance; dall’altro, l’inizio di una politica e di una poetica della professionalità, abbracciata trasversalmente da tutte le figure che operano nel settore dell’industria musicale. Nell’articolo si passano in rassegna gli studi di settore più recenti che hanno cercato di decostruire il paradigma della resistenza come cornice interpretativa dominante. Si ricostruisce, inoltre, una breve storia dell’industria discografica nel mondo arabo, che nei suoi oltre cent’anni di storia ha attraversato trasformazioni materiali e simboliche radicali, entrando a far parte a tutti gli effetti della storia culturale ed economica della regione. Infine, si esamina la questione della professionalizzazione dell’industria musicale indipendente araba, messa a tema dai musicisti e dai lavoratori dell’industria musicale come un antidoto alla retorica della resistenza, attraverso il quale contribuire alla formazione di una nuova nozione di agency.
description: DIVE-IN – An International Journal on Diversity and Inclusion, V. 2 N. 2 (2022): Interpretare e costruire mondi: pratiche inclusive a varie latitudini
Introduzione. Interpretare e costruire mondi: pratiche inclusive a varie latitudini
Creators: name: Peta, Ines
name: Vitucci, Francesco
Publisher: name: DIVE-IN – An International Journal on Diversity and Inclusion
Year: 2023

description: DIVE-IN – An International Journal on Diversity and Inclusion, V. 2 N. 2 (2022): Interpretare e costruire mondi: pratiche inclusive a varie latitudini
Effect of organizational culture on employee creativity in ethio-telecom
Creators: name: Kalkidan, Amare
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: This study emphasizes on the effect of organizational culture elements namely; organizational values, organizational climate and leadership style on employee creativity in Ethiotelecom. Three research hypotheses were formulated and tested. For selecting sample of respondents' random sampling was used. 198 questionnaires were distributed to a sample drawn from employees of Ethiotelecom working at head office, Out of which, 175 were returned. Descriptive and inferential data analysis was made using statistical package of social science(SPSS) software version 20.preilminary analysis of testing the assumptions of linear regression analysis was made before the major analysis. The finding indicated that, organizational climate and leadership style had significant and positive relationship with employee creativity, but there was no significant relationship between organizational values and employee creativity. The paper would add value to organization studies discipline by providing insightful view towards organizational culture and employee creativity and would initiate further discussions to create an effective framework between organizational culture and its impact on creativity.
Tuning of thermoelectric properties with changing Se content in Sb2Te3
Creators: name: Das, Diptasikha
name: Malik, K.
name: Deb, A. K.
name: Kulbachinskii, V. A.
name: Kytin, V. G.
name: Chatterjee, S.
name: Das, D.
name: Dhara, S.
name: Bandyopadhyay, S.
name: Banerjee, Aritra
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Polycrystalline Sb 2 Te 3-x Se x (0.0 < x < 1.0) samples were synthesized by the solid state reaction method. The structural analysis showed that up to the maximal concentration of Se, the samples possess the Rhombohedral crystal symmetry (space group R 3 m ). Increase of Se content increases the resistivity of the samples. Variation of phonon frequencies, observed from Raman spectroscopic study, depict anomalous behaviour around x = 0.2. The sample Sb 2 Te 2.8 Se 0.2 also shows maximum Seebeck coefficient, carrier concentration and thermoelectric power factor. Nature of scattering mechanism controlling the thermopower data has been explored. The thermoelectric properties of the synthesized materials have been analyzed theoretically in the frame of Boltzmann equation approach.
description: Accepted for publication in Europhysics Letters
Repair and Preventive Maintenance of PV Modules with Degrading Backsheets Using Flowable Silicone Sealant
Creators: name: Beaucarne, G.
name: Eder, G.C.
name: Jadot, E.
name: Voronko, Y.
name: Mühleisen, W.
Publisher: name: WIP
Year: 2021
Subjects: PV Systems – Modelling, Design, Operation and Performance
Operation, Performance and Maintenance of PV Systems

description: 38th European Photovoltaic Solar Energy Conference and Exhibition; 1051-1053
description: PV modules with a degrading backsheet are a problem for the complete PV value chain. Some types of backsheets are known to develop cracks because of an aging-induced change in the mechanical characteristics of the material during operation in the field, which results in a loss of insulation resistance. In this work, we present a solution for repair and preventive maintenance based on a single component flowable silicone sealant. The method fills the cracks present in the backsheet with an insulating material, restores the insulation resistance, and provides a protective layer to avoid subsequent degradation. The solution was successfully implemented on the back of PV modules with coextruded polyamide backsheet (‘AAA’) which showed deep cracks following degradation 5-7 years of operation in a solar park. The repaired modules had a restored insulation resistance of several hundred MΩ as observed with wet leakage testing, and maintained a high resistance after accelerating aging. This repair technology can be done in the field and is an alternative solution to module replacement.
Advanced Method to Determine the Gain of Bifacial PV Systems
Creators: name: Stellbogen, D.
name: Lechner, P.
name: Kriening, J.
name: Schanz, O.
name: Geyer, D.
Publisher: name: WIP
Year: 2021
Subjects: PV Systems – Modelling, Design, Operation and Performance
Operation, Performance and Maintenance of PV Systems

description: 38th European Photovoltaic Solar Energy Conference and Exhibition; 1054-1059
description: An experimental bifacial PV test installation has been setup to evaluate a novel approach for determining the bifacial gain, which applies an internal monofacial reference established by covering bifacial PV modules on the back. The direct comparison of bifacial and ‘monofacial’ operation allows monitoring the bifacial gain of a PV plant in operation and solves the issue of finding an appropriate reference. The bifacial gain observed in the test system was about 7 %, proving the usefulness of bifacial PV modules also on mounting racks not optimized for bifacial PV. Measurements of albedo and backside irradiance enable the detailed evaluation of the bifacial PV performance. However, measurement of the backside irradiation is complex and over- or underestimation has to be carefully avoided. The method of internal monofacial reference shall be developed further for supervision and fault detection in Bifacial PV plants.
The contribution of agricultural export to economic growth in Ethiopia: a case of sesame product
Creators: name: Tekeste, Abrham
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2019

description: The study made use of time series annual data covering the period between 1988 and 2018. The main objective of this study is to investigate the relationship between agricultural export and economic growth in Ethiopia. The reviewed studies focused on the standard theoretical neoclassical growth model using based on a generalized Cobb Douglas production framework with some extensions. The stationarity, long run, and short dynamics between economic growth and agricultural exports sub-sector sesame export in Ethiopia were estimated through the employment of econometrics methodology proved and tests such as Unit root test (i.e. the data is stationery at first level both ; Augmented Dickey fuller test and Phillips-Peron tests ), Model Stability test(i.e. the study model was performed stability of the model) , Heterodosicity test (the study there is no heteroscedasticity problem ), Autocorrelation test(i.e. the study there is no problem of multicollinearity ) and Normality test(i.e. the study data were consistent with a normal distribution).The investigations on the relationship between agricultural export and growth in Ethiopia has provided a good understanding of the impact that agricultural export has on the growth of Ethiopia's economy with particular reference to agricultural exports stimulates economic development. Also Sesame seeds, are the second largest source of foreign currency for Ethiopia's next to coffee, contributing significantly for the achievement of the country's high economic growth. the result of the study has found a positive relationship between sesame export and economic growth with strong statistical significance, showing that an increase in sesame export result in increased economic growth; also this study also approved the purpose of this thesis is to identify key bottlenecks in sesame value-chain and assess the magnitude and effects of key determinants of sesame exports. Moreover it recommends the Ethiopia government to establish effective agricultural export promotion policy to overcome all challenges accordingly and fuel the economic growth of the country. Finally, the study ends with some policy recommendations aiming at guiding effective strategy to improve the performance of the sesame export.
Quantifying Performance Loss Rates of Photovoltaic Modules Using Ground-Based vs Satellite-Based Meteorological Data
Creators: name: Özkalay, E.
name: Virtuani, A.
name: Fairbrother, A.
name: Skoczek, A.
name: Friesen, G.
name: Ballif, C.
Publisher: name: WIP
Year: 2021
Subjects: PV Systems – Modelling, Design, Operation and Performance
Solar Resource and Forecasting

description: 38th European Photovoltaic Solar Energy Conference and Exhibition; 1037-1041
description: Accurate assessment of the long-term performance of photovoltaic (PV) systems is critical for manufacturers, investors, plant owners and O&M companies. M any PV systems, especially residential and some commercial/industrial systems, are not equipped with meteorological monitoring systems such as irradiance and temperature sensors. Whereas to calculate the performance ratio (PR), a common performance measure, the plane of array irradiance (GPOA) is an input parameter. The irradiance data is the largest contribution to uncertainty in PR. Therefore, in this study, we first evaluate satellite-based irradiance and compare to ground-based irradiance data. Next, we investigate the accuracy of using the satellite-based meteorological data in long-term performance analysis of three test modules in the absence of ground-based data. We use (1) ground-based and (2) satellite-based data separately as input irradiance. We calculate 60 PR time series and performance loss rates (PLR) for each irradiance data using different filtering methods and performance metrics. As a representative PLR value, we used the mean value (excluding outliers) of the various PLR values obtained as suggested by IEA PVPS Task 13. For the first module, this method gave almost identical PLR values (-0.5% error) when ground- and satellite-based data are used. For the other two modules, the values are not identical, but standard deviations largely overlap. We show that when the mean of PLR values is used, it is possible to accurately evaluate the long-term performance using satellite-based meteorological data.
Assessment of Green Supply Chain Management Practices and Organizational Performance: the Case of Ethio Telecom
Creators: name: Kora, Mesfin
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2016

description: As "green" issues continue to become a global concern, assessing organizational performance from green paradigms perspectives is imperative. The purpose of this study was to assess the green supply chain practice and organizational performance in the case of ethio telecom. In order to attain the objectives of the study, mixed approach was entertained. As a means of data collection instrument; questionnaire and structured interview questions were applied. The population of the study were 41 employees of ethio telecom, mainly those at managerial position and responsible either directly or indirectly for the supply chain activities of the company. From a total of 41 questionnaires distributed, only 36 of them were correctly filled and applied in the study, and this revealed a response rate of 88%. The interviews were conducted with Compliance and Monitoring Control and Environmental Law and Standards Directorates of the Ministry of Environments and Forest officer and Communication and IT standardization and Regulation Directoratesofficer. In order to analyse, interpret and present the data captured via questionnaire,Statistical Package for the Social Sciences(SPSS) were used. Both inferential and descriptive analysis methods i.e., percentage, means, standard deviation, correlation, regression and narrative analysis were used. With regard to the survey output, with the exception of eco design and operational performance, though, conducted correlation analysis revealed the existence of statistically significant positive association between the dimensions of green supply chain management and organizational performance, the overall survey result indicate that except investment recovery, all the dimensions of green supply chain management; organizational commitment, eco-design, green purchasing, green marketing and environmental practice are poorly threated by ethio telecom. The regression result also suggested that organizational commitment, eco-design, green purchasing and environmental practice have statistically significant predicting power on organizational performance
Attosecond Transient Absorption in Dense Gases: Exploring the Interplay between Resonant Pulse Propagation and Laser-Induced Line Shape Control
Creators: name: Liao, Chen-Ting
name: Camp, Seth
name: Schafer, Kenneth J.
name: Gaarde, Mette B.
name: Sandhu, Arvinder
Publisher: name: arXiv
Year: 2016
Subjects: subject: Atomic Physics (physics.atom-ph)
subject: Optics (physics.optics)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: We investigate the evolution of extreme ultraviolet (XUV) spectral lineshapes in an optically-thick helium gas under near-infrared (IR) perturbation. In our experimental and theoretical work, we systematically vary the IR intensity, time-delay, gas density and IR polarization parameters to study lineshape modifications induced by collective interactions, in a regime beyond the single atom response of a thin, dilute gas. In both experiment and theory, we find that specific features in the frequency-domain absorption profile, and their evolution with propagation distance, can be attributed to the interplay between resonant attosecond pulse propagation and IR induced phase shifts. Our calculations show that this interplay also manifests itself in the time domain, with the IR pulse influencing the reshaping of the XUV pulse propagating in the resonant medium.
description: 10 pages, 9 figures
Quality Assurance of the Photovoltaic Power Plants Installation Stage - a Complementary Strategy Based of Photoluminescence and Steady-State Thermography
Creators: name: Koester, L.
name: Astigarraga, A.
name: Lindig, S.
name: Louwen, A.
name: Antinori, M.
name: Moser, D.
name: Manzolini, G.
Publisher: name: WIP
Year: 2021
Subjects: PV Systems – Modelling, Design, Operation and Performance
Operation, Performance and Maintenance of PV Systems

description: 38th European Photovoltaic Solar Energy Conference and Exhibition; 1042-1050
description: Procurement, installation and operation are different phases of a photovoltaic (PV) plant life cycle. Each of these phases come with different risks. These risks and their possible effects are shown in this paper with particular focus on PV modules, explained along the real construction of a PV plant in northern Italy. The quality is tested during all phases; before procurement to ensure module quality, after transport and installation to detect the impact of wrong handling, and during the operational phase. Electroluminescence, current-voltage curve measurements, infrared thermography and daylight photoluminescence were performed. Electroluminescence and current-voltage curve measurements were carried out during procurement and after transport and installation to evaluate the impact of module mishandling. The damage wrong handling of a PV module can cause is shown. During the first year of operation, two infrared thermography inspections were performed to assess the health status of the PV plant and to detect possible further degradation modes, which have not been noticed before. The development of hot spots over half a year is analyzed and severe cell cracks were found as root causes, detected through daylight photoluminescence imagery. Further, the applicability of daylight photoluminescence and the detectability of degradation modes in images of two varying distances is investigated.
Towards Enabling Broadband for a Billon Plus Population with TV White Spaces
Creators: name: Kumar, Animesh
name: Karandikar, Abhay
name: Naik, Gaurang
name: Khaturia, Meghna
name: Saha, Shubham
name: Arora, Mahak
name: Singh, Jaspreet
Publisher: name: arXiv
Year: 2016
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: Information Theory (cs.IT)
subject: FOS: Computer and information sciences

description: One of the major impediments to providing broadband connectivity in semi-urban and rural India is the lack of robust and affordable backhaul. Fiber connectivity in terms of backhaul that is being planned (or provided) by the Government of India would reach only till rural offices (named Gram Panchayat) in the Indian rural areas. In this exposition, we articulate how TV white space can address the challenge in providing broadband connectivity to a billion plus population within India. The villages can form local Wi-Fi clusters. The problem of connecting the Wi-Fi clusters to the optical fiber points can be addressed using a TV white space based backhaul (middle-mile) network. The amount of TV white space present in India is very large when compared with the developed world. Therefore, we discuss a backhaul architecture for rural India, which utilizes TV white spaces. We also showcase results from our TV white space testbed, which support the effectiveness of backhaul by using TV white spaces. Our testbed provides a broadband access network to rural population in thirteen villages. The testbed is deployed over an area of $25$km$^2$, and extends seamless broadband connectivity from optical fiber locations or Internet gateways to remote (difficult to connect) rural regions. We also discuss standards and TV white space regulations, which are pertinent to the backhaul architecture mentioned above.
description: 10 pages, 6 figures, submitted to IEEE Communications Magazine
Application of Machine Learning to Assess the Thermal Behaviour of PV Modules in Different Climate Zones
Creators: name: Ascencio-Vásquez, J.
name: Kaaya, I.
name: Weiß, K.-A.
name: Topic, M.
Publisher: name: WIP
Year: 2021
Subjects: PV Systems – Modelling, Design, Operation and Performance
Operation, Performance and Maintenance of PV Systems

description: 38th European Photovoltaic Solar Energy Conference and Exhibition; 1028-1032
description: Identifying the main factors for PV module performance losses, degradation and failures are still under research. Researchers have developed physical models to characterize the weather and the local environment where PV modules operate. , Indeed, published physical models can help to estimate PV long-term yield and degradation rates. These models highly depend on the operating PV module temperature, UV irradiance, and relative humidity as main inputs. In most cases, these input variables need to be modelled. For example, several models to estimate PV module temperature are available. However, improvements in their accuracy are still needed. Therefore, in this paper, we apply Machine Learning approaches to identify the combination of climate variables needed to model the PV module temperature. We then propose a modifiedtFaiman model that includes the effect of UV irradiance. Lastly, the modified model is benchmarked with other physical temperature models and shows an improvement over other models.
Separating Inverse spin Hall voltage and spin rectification voltage by inverting spin injection direction
Creators: name: Zhang, Wenxu
name: Peng, Bin
name: Han, Fangbin
name: Wang, Qiuru
name: Soh, Wee Tee
name: Ong, C K
name: Zhang, Wanli
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: We develop a method for universally resolving the important issue of separating the inverse spin Hall effect (ISHE) from spin rectification effect (SRE) signal. This method is based on the consideration that the two effects depend on the spin injection direction: The ISHE is an odd function of the spin injection direction while the SRE is independent on it. Thus, inversion of the spin injection direction changes the ISHE voltage signal, while SRE voltage remains. It applies generally to analyzing the different voltage contributions without fitting them to special line shapes. This fast and simple method can be used in a wide frequency range, and has the flexibility of sample preparation.
description: 4 figures
Estimating Day Ahead Photovoltaic Production Distribution Functions for the Risk Assessment of Control Energy Provision
Creators: name: Steinbrecher, M.
name: Kubicek, B.
name: Rennhofer, M.
Publisher: name: WIP
Year: 2021
Subjects: PV Systems – Modelling, Design, Operation and Performance
Operation, Performance and Maintenance of PV Systems

description: 38th European Photovoltaic Solar Energy Conference and Exhibition; 1033-1036
description: To enable the potential business case of advanced energy market participation of photovoltaic generator systems, not only the day ahead forecast of PV production needs to be known, but also the likelihood of strong deviations from the predicted production. By using an analytic predictor to model PV production, that is then used as an additional input feature for black box machine learning, a generalized predictor can be created. By clustering forecastable ambient conditions, the typical deviations of the generalized predictor can be estimated in historic data, to estimate the likelihood distribution of forecasted future production.