cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Digital Innovation Dynamics Influence on Organisational Adoption: The Case of Cloud Computing Services
Creators: name: El-Haddadeh, Ramzi
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Information systems
Distributed computing and systems software

description: Digital innovative technologies have enabled organisations to create opportunities to support their competitive advantage. In this regard, realising the dynamics influencing the adoption of these technologies becomes critical to their success. While much attention has been focused on the technological development, implementation and employees’ adoption, little has been done to examine the specifics of digital innovation influencing technology uptake in organisations. Drawing from Technology Organisation and Environment framework, this paper examines the factors affecting innovation dynamics adoption in the context of cloud computing for SMEs. The findings obtained from IT and senior managers highlight that while innovative IT capabilities, organisational innovativeness, perceived innovation risk, perceived innovation barriers influence the likelihood for SMEs adopting cloud computing as an innovative solution, IT innovation-driven competitiveness has limited influence. As such, this demonstrates how understating the specifics of innovation dynamics can help in offering the required support for SMEs in sustaining success.Other Information Published in: Information Systems Frontiers
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10796-019-09912-2
Abelian Tensor Hierarchy in 4D, N=1 Superspace
Creators: name: Becker, Katrin
name: Becker, Melanie
name: Linch, William D
name: Robbins, Daniel
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: FOS: Physical sciences

description: With the goal of constructing the supersymmetric action for all fields, massless and massive, obtained by Kaluza-Klein compactification from type II theory or M-theory in a closed form, we embed the (Abelian) tensor hierarchy of p-forms in four-dimensional, N=1 superspace and construct its Chern-Simons-like invariants. When specialized to the case in which the tensors arise from a higher-dimensional theory, the invariants may be interpreted as higher-dimensional Chern-Simons forms reduced to four dimensions. As an application of the formalism, we construct the eleven-dimensional Chern-Simons form in terms of four-dimensional, N=1 superfields.
description: 31 pages
Nanofluids in Solar Thermal Collectors: Review and Limitations
Creators: name: Wole-osho, Ifeoluwa
name: Okonkwo, Eric C.
name: Abbasoglu, Serkan
name: Kavaz, Doga
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Condensed matter physics

description: Solar thermal collectors are systems that allow for the use of solar energy in thermal applications. These collectors utilize a heat transfer fluid to transport absorbed solar radiation to applications where they are needed. Scientists in a bid to improve the conversion efficiency of solar collectors have suggested different collector designs and improved collector materials. Over the last 25 years, the study of nanofluids and their applications have revolutionized material science, and nanotechnology has found applications in improving solar collector materials. This article reviews the impact of different nanomaterials on the efficiency of solar collectors. The study also outlines the limitations of applying nanofluids and discusses the long-term challenges of their application to solar collectors. Nanofluids have the potential to improve the overall efficiency of most solar collectors, however, the full potential of nanofluids in heat transfer applications cannot be completely achieved until some of the questions regarding hysteresis, stability, and the overall predictability of nanofluids are answered.Other Information Published in: International Journal of Thermophysics
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10765-020-02737-1
Comparing Properties of Massively Multiplayer Online Worlds and the Internet of Things
Creators: name: Nevelsteen, Kim J. L.
name: Kanter, Theo
name: Rahmani, Rahim
Publisher: name: arXiv
Year: 2016
Subjects: subject: Networking and Internet Architecture (cs.NI)
subject: FOS: Computer and information sciences

description: With the rise of the Internet of Things (IoT), this means recognizing the need for architectures to handle billions of devices and their interactions. A virtual world engine at the massively multiplayer scale is a massively multiplayer online world (MMOW); one thing virtual world engines realized when going into the scale of MMOs, is the cost of maintaining a potentially quadratic number of interactions between a massive number of objects, laid out in a spatial dimension. Research into IoT was fueled by research in wireless sensor networks, but rather than start from a device perspective, this article looks at how architectures deal with interacting entities at large scale. The domain of MMOWs is examined for properties that are affected by scale. Thereafter the domain of IoT is evaluated to see if each of those properties are found and how each is handled. By comparing the current state of the art of MMOWs and IoT, with respect to scalability, the problem of scaling IoT is explicated, as well as the problem of incorporating an MMOW with IoT into a pervasive platform. Three case studies of a MMOW interfacing with IoT are presented in closing.
description: 10 pages, 2 figures
Diabetes-related cardiovascular and economic burden in patients hospitalized for heart failure in the US: a recent temporal trend analysis from the National Inpatient Sample
Creators: name: Mekhaimar, Menatalla
name: Dargham, Soha
name: El-Shazly, Mohamed
name: Al Suwaidi, Jassim
name: Jneid, Hani
name: Abi Khalil, Charbel
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Cardiovascular medicine and haematology

description: We aimed to study the cardiovascular and economic burden of diabetes mellitus (DM) in patients hospitalized for heart failure (HF) in the US and to assess the recent temporal trend. Data from the National Inpatient Sample were analyzed between 2005 and 2014. The prevalence of DM increased from 40.4 to 46.5% in patients hospitalized for HF. In patients with HF and DM, mean (SD) age slightly decreased from 71 (13) to 70 (13) years, in which 47.5% were males in 2005 as compared with 52% in 2014 (p trend < 0.001 for both). Surprisingly, the presence of DM was associated with lower in-hospital mortality risk, even after adjustment for confounders (adjusted OR = 0.844 (95% CI [0.828–0.860]). Crude mortality gradually decreased from 2.7% in 2005 to 2.4% in 2014 but was still lower than that of non-diabetes patients’ mortality on a yearly comparison basis. Hospitalization for HF also decreased from 211 to 188/100,000 hospitalizations. However, median (IQR) LoS slightly increased from 4 (2–6) to 4 (3–7) days, so did total charges/stay that jumped from 15,704 to 26,858 USD (adjusted for inflation, p trend < 0.001 for both). In total, the prevalence of DM is gradually increasing in HF. However, the temporal trend shows that hospitalization and in-hospital mortality are on a descending slope at a cost of an increasing yearly expenditure and length of stay, even to a larger extent than in patient without DM.Other Information Published in: Heart Failure Reviews
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10741-020-10012-6
Automatic Parallelization: Executing Sequential Programs on a Task-Based Parallel Runtime
Creators: name: Fonseca, Alcides
name: Cabral, Bruno
name: Rafael, João
name: Correia, Ivo
Publisher: name: arXiv
Year: 2016
Subjects: subject: Programming Languages (cs.PL)
subject: FOS: Computer and information sciences

description: There are billions of lines of sequential code inside nowadays' software which do not benefit from the parallelism available in modern multicore architectures. Automatically parallelizing sequential code, to promote an efficient use of the available parallelism, has been a research goal for some time now. This work proposes a new approach for achieving such goal. We created a new parallelizing compiler that analyses the read and write instructions, and control-flow modifications in programs to identify a set of dependencies between the instructions in the program. Afterwards, the compiler, based on the generated dependencies graph, rewrites and organizes the program in a task-oriented structure. Parallel tasks are composed by instructions that cannot be executed in parallel. A work-stealing-based parallel runtime is responsible for scheduling and managing the granularity of the generated tasks. Furthermore, a compile-time granularity control mechanism also avoids creating unnecessary data-structures. This work focuses on the Java language, but the techniques are general enough to be applied to other programming languages. We have evaluated our approach on 8 benchmark programs against OoOJava, achieving higher speedups. In some cases, values were close to those of a manual parallelization. The resulting parallel code also has the advantage of being readable and easily configured to improve further its performance manually.
description: Accepted for Publication
Higher education and sustainable development goal 16 in fragile and conflict-affected contexts
Creators: name: Milton, Sansom
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Education systems

description: Sustainable Development Goal 16 commits to ‘promote peaceful and inclusive societies for sustainable development, provide access to justice for all and build effective, accountable and inclusive institutions at all levels’. While the concerns of SDG16 with violence reduction, rule of law, and governance are relevant to all societies, this paper focuses on fragile and conflict-affected countries, many of which have the hardest task in achieving SDG16. It analyses how higher education can contribute towards—or detract from—SDG16 through teaching, research, governance, and external leadership. It then analyses four dynamics influencing the agency of universities in fragile and conflict-affected contexts in engaging with SDG16: resource mobilisation and the public good; securitisation; academic freedom, insecurity, and politicisation; and tensions between demands for localisation and the universalising logics of liberal peacebuilding models and the SDGs.Other Information Published in: Higher Education
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10734-020-00617-z
CASTER: Direct species tree inference from whole-genome alignments
Creators: name: Zhang, Chao
name: Nielsen, Rasmus
name: Mirarab, Siavash
Publisher: name: Zenodo
Year: 2023
Subjects: CASTER
MSPRIME
DNA recombination
Phylogenetics
MSA

description: Genomes contain mosaics of discordant evolutionary histories, challenging the accurate inference of the tree of life. While genome-wide data are routinely used for discordance-aware phylogenomic analyses, due to modeling and scalability limitations, the current practice leaves out large chunks of the genomes. As more high-quality genomes become available, we urgently need discordance-aware methods to infer the tree directly from a multiple genome alignment. Here, we introduce CASTER, a site-based method that eliminates the need to predefine recombination-free loci. CASTER is statistically consistent under incomplete lineage sorting and is scalable to hundreds of mammalian whole genomes. We show both in simulations and on real data that CASTER is scalable and accurate and that its per-site scores can reveal interesting patterns of evolution across the genome.
description: Funding provided by: National Science Foundation
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000001
Award Number: 2138259Funding provided by: National Science Foundation
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000001
Award Number: 2138286Funding provided by: National Science Foundation
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000001
Award Number: 2138307Funding provided by: National Science Foundation
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000001
Award Number: 2137603Funding provided by: National Science Foundation
Crossref Funder Registry ID: http://dx.doi.org/10.13039/100000001
Award Number: 2138296
Variationally equivalent problems and variations of Noether currents
Creators: name: Francaviglia, M.
name: Palese, M.
name: Winterroth, E.
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: FOS: Physical sciences

description: We consider systems of local variational problems defining non vanishing cohomolgy classes. In particular, we prove that the conserved current associated with a generalized symmetry, assumed to be also a symmetry of the variation of the corresponding local inverse problem, is variationally equivalent to the variation of the strong Noether current for the corresponding local system of Lagrangians. This current is conserved and a sufficient condition will be identified in order such a current be global.
description: 10 pages, slightly revised version of the published one
Analysis of 3D-printed metal for rapid-prototyped reflective terahertz optics
Creators: name: Headland, Daniel
name: Withayachumnankul, Withawat
name: Webb, Michael
name: Ebendorff-Heidepriem, Heike
name: Luiten, Andre
name: Abbott, Derek
Publisher: name: arXiv
Year: 2016
Subjects: subject: Optics (physics.optics)
subject: FOS: Physical sciences
subject: 78-05

description: We explore the potential of 3D metal printing to realize complex conductive terahertz devices. Factors impacting performance such as printing resolution, surface roughness, oxidation, and material loss are investigated via analytical, numerical, and experimental approaches. The high degree of control offered by a 3D-printed topology is exploited to realize a zone plate operating at 530 GHz. Reflection efficiency at this frequency is found to be over 90%. The high-performance of this preliminary device suggest that 3D metal printing can play a strong role in guided-wave and general beam control devices in the terahertz range.
description: 13 pages, 6 figures, submitted to Optics Express
Transparent p-conducting Materials for Application in Highly Efficient Thin Film Solar Cells
Creators: name: Polenzky, C.
name: Ulrich, S.
name: Szyszka, B.
name: Bywalez, R.
name: Götzendörfer, S.
name: Löbmann, P.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
New Materials, Cells and Modules

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 285-288
description: We concentrate our attention on the research for p-conducting materials with high bandgap for improved integration
in p-i-n solar cells. We show alternative techniques for synthesis of p-conducting materials with a wide band gap and
our progress in improving these materials concerning doping and structure. We present results of the research on ptype
delafossites, proved by Seebeck measurements, synthesized by sol-gel technique, in particular CuCrO2 und
CuAl1-xCrxO2:Mg, and also by sputtering techniques, in particular CuAlO2 and CuCrO2. Furthermore, we could
considerably lower the relative high synthesis temperature of the delafossite by systematic doping and annealing in
oxygen-deficient atmosphere. Synthesis temperatures below 700 °C were reached for the first time by the sol gel
route.
New Encapsulation Solution for the PV Thin Film Industry
Creators: name: Neff, T.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
New Materials, Cells and Modules

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 241-242
description: One of the last manufacturing steps in the encapsulation of PV modules is that the glass and the foil are
laminated. To be sure that the quality will be good for at least 20 or 30 years Bystronic glass offers machinery for butyl
sealing. At first there is a back end system for the production of thin film modules without any foil for the encapsulation.
Furthermore Bystronic glass has developed a system to apply butyl on the border of a thin film substrate before the
lamination process with a lamination foil. In the end there is a new invention for wafer based modules, where butyl
application is one of the key points of the project.
Comprehensive Recycling of Silicon
Creators: name: Röver, I.
name: Knopf, C.
name: Konrad, B.
name: Werzner, K.
name: Von Ramin-Marro, D.
name: Wambach, K.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Silicon Feedstock, Crystallisation and Wafering

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 1230-1232
description: In light of the current state of the silicon market, it becomes ever more important to develop efficient recovery processes for silicon from various steps of the value chains of both solar and semiconductor industries. Through the use of off-grade silicon, it is simultaneously possible to improve the environmental balance of PV products. At SolarMaterial, processes are constantly under development to secure the silicon supply through refining off-grade material while conforming to the strict standards for solar grade silicon. It is shown how this idea is incorporated into the key processes of quality control, etching and crystallisation of feedstock to ensure efficient and cost-effective recycling.
How Gender Differences in Entitlement and Apprehension Manifest Themselves in Negotiation
Creators: name: Mozahem, Najib A.
name: El Masri, Moniat El Noufous K.
name: Najm, Nazhat M.
name: Saleh, Samah S.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Strategy, management and organisational behaviour

description: The gender difference in the propensity to initiate negotiation has been theorized to be mediated by three constructs: recognition of opportunities, entitlement, and apprehension. This study seeks to investigate whether differences in feminine and masculine traits can be used to explain gender differences in the three predictors of the propensity to initiate negotiations. Data was collected from 350 surveys distributed in Lebanon. Items were used to measure the constructs masculinity and femininity, as well as the three predictors of the propensity to initiate negotiation, namely Recognition of opportunities, Entitlement, and Apprehension. Confirmatory Factor Analysis was used to assess the validity of the measures, while structural equation modeling was used to investigate the relationship between the personality traits and the three constructs. Results indicate that masculinity enhances entitlement, which in turn leads to higher levels of negotiation while femininity enhances apprehension, which in turn leads to lower levels of negotiation. Both masculine and feminine traits were found to be positively related to the recognition of opportunities.Other Information Published in: Group Decision and Negotiation
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10726-021-09724-3
Predictability of PV Power Grid Performance on Insular Sites without Weather Stations: Use of Artificial Neural Networks
Creators: name: Voyant, C.
name: Muselli, M.
name: Paoli, C.
name: Nivet, M.L.
name: Poggi, P.
name: Haurant, P.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Systems
PV Power Plants

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4141-4144
description: The official meteorological network is poor on the island of Corsica: only three sites being about 50
km apart are equipped with pyranometers which enable measurements by hourly and daily step. These sites are
Ajaccio (41°55’N and 8°48’E, seaside), Bastia (42°33’N, 9°29’E, seaside) and Corte (42°30’N, 9°15’E average
altitude of 486 meters). This lack of weather station makes difficult the predictability of PV power grid performance.
This work intends to study a methodology which can predict global solar irradiation using data available from
another location for daily and hourly horizon. In order to achieve this prediction, we have used Artificial Neural
Network which is a popular artificial intelligence technique in the forecasting domain. A simulator has been obtained
using data available for the station of Ajaccio that is the only station for which we have a lot of data: 16 years from
1972 to 1987. Then we have tested the efficiency of this simulator in two places with different geographical features:
Corte, a mountainous region and Bastia, a coastal region. On daily horizon, the relocation has implied fewer errors
than a “naïve” prediction method based on the persistence (RMSE=1468 Vs 1383Wh/m² to Bastia and 1325 Vs
1213Wh/m² to Corte). On hourly case, the results were still satisfactory, and widely better than persistence
(RMSE=138.8 Vs 109.3 Wh/m² to Bastia and 135.1 Vs 114.7 Wh/m² to Corte). The last experiment was to evaluate
the accuracy of our simulator on a PV power grid localized at 10 km from the station of Ajaccio. We got errors very
suitable (nRMSE=27.9%, RMSE=99.0 W.h) compared to those obtained with the persistence (nRMSE=42.2%,
RMSE=149.7 W.h).
Smart greenhouses as the path towards precision agriculture in the food-energy and water nexus: case study of Qatar
Creators: name: Karanisa, Theodora
name: Achour, Yasmine
name: Ouammi, Ahmed
name: Sayadi, Sami
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Agriculture, land and farm management

description: Greenhouse farming is essential in increasing domestic crop production in countries with limited resources and a harsh climate like Qatar. Smart greenhouse development is even more important to overcome these limitations and achieve high levels of food security. While the main aim of greenhouses is to offer an appropriate environment for high-yield production while protecting crops from adverse climate conditions, smart greenhouses provide precise regulation and control of the microclimate variables by utilizing the latest control techniques, advanced metering and communication infrastructures, and smart management systems thus providing the optimal environment for crop development. However, due to the development of information technology, greenhouses are undergoing a big transformation. In fact, the new generation of greenhouses has gone from simple constructions to sophisticated factories that drive agricultural production at the minimum possible cost. The main objective of this paper is to present a comprehensive understanding framework of the actual greenhouse development in Qatar, so as to be able to support the transition to sustainable precision agriculture. Qatar’s greenhouse market is a dynamic sector, and it is expected to mark double-digit growth by 2025. Thus, this study may offer effective supporting information to decision and policy makers, professionals, and end-users in introducing new technologies and taking advantage of monitoring techniques, artificial intelligence, and communication infrastructure in the agriculture sector by adopting smart greenhouses, consequently enhancing the Food-Energy-Water Nexus resilience and sustainable development. Furthermore, an analysis of the actual agriculture situation in Qatar is provided by examining its potential development regarding the existing drivers and barriers. Finally, the study presents the policy measures already implemented in Qatar and analyses the future development of the local greenhouse sector in terms of sustainability and resource-saving perspective and its penetration into Qatar’s economy.Other Information Published in: Environment Systems and Decisions
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10669-022-09862-2
3rd Generation Solar Cell Prototype Based on Chemically Formed Silicon Nanowires: Processing, Optical and Photovoltaic Properties
Creators: name: Sivakov, V.A.
name: Gawlik, A.
name: Andrä, G.
name: Berger, A.
name: Christiansen, S.H.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Advanced Photovoltaics
New Materials, Cells and Modules

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 305-309
description: Silicon nanowire (SiNW) ensembles with vertical architecture have been successfully realized by a wet
chemical etching process of a mc-p+nn+-Si layer on glass. The highest obtained open-circuit voltage under AM 1.5
illumination was 500 mV. The highest power conversion efficiency of a SiNW based solar cell on glass was around 5%.
Strong absorption (>90%) and low reflection (<10%) of visible light by the SiNW ensembles which is remarkable
compared to a thin Si layer of equivalent thickness of 3 μm where absorption of visible light is only 50-60%.
Planning for a neighborhood and city-scale green network system in Qatar: the case of MIA Park
Creators: name: Furlan, Raffaello
name: Sinclair, Brian R.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Applied economics
Urban and regional planning

description: In the past decade, Doha has witnessed fast-urban growth, an increased population rate, and an over-reliance on the automobile as the main mode of urban transportation. These factors caused social and environmental problems related to (1) the loss of a compact urban pattern, (2) an increased level of air pollution (3) high traffic congestions and (4) increasing landscape fragmentation. In consideration of such concerns, The State of Qatar invested large funds into the urban landscape development of Doha, as envisioned by Qatar National Vision 2030. As a result, in the past five years various parks and/or green areas, such MIA Park, a major public green space located around the Museum of Islamic Art (MIA), were planned and developed within metropolitan Doha. The authors argue that this park is currently facing issues and challenges related to (1) accessibility to/from the neighboring districts, and (2) connectivity to/from the neighboring parks. Therefore, this research study aims at assessing the existing conditions of MIA Park, at considering the broader city context and, at recommending strategies for implementing MIA Park’s green network system. It approached the investigative challenge using a multi-pronged comprehensive methodology, that deployed focus groups, semi-structured interviews and a comprehensive network analysis based on graph theory. The findings, revealed through these hybrid research tactics, allowed the researchers to generate a framework to enhance accessibility and connectivity of MIA Park through a green network system, planned at inter-related neighborhood-scale and city-scale levels. While the research examines most notably a single case, it is advocated that the proposed framework represents not just an optional feature pertaining to the case in Doha, but a valuable reference for the sustainable master planning of future cities in the State of Qatar and across the GCC. The paper proffers numerous key contributions, including the critical exploration of manufactured landscapes in Doha Qatar and the delineation of broadly applicable environmental design strategies to improve the fabric and livability of cities.Other Information Published in: Environment, Development and Sustainability
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10668-021-01280-9
The urban regeneration’s framework for transit villages in Qatar: the case of Al Sadd in Doha
Creators: name: Furlan, Raffaello
name: Zaina, Sara
name: Patel, Shikha
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Applied economics
Urban and regional planning

description: In the past two decades, Doha, the capital city of the State of Qatar, has undergone a rapid urban transformation. In 2013 and 2014, the State of Qatar, respectively, initiated the construction of Doha Metro and launched the Qatar National Development Framework (QNDF), an action plan for managing sustainable urban development at national level. Namely, QNDF emphasizes the importance of linking Doha Metro system with urban growth through transit-oriented developments (TODs), a model maximizing the integration between transport systems and land use, through the development of sustainable, vibrant, livable, compact and mixed-use communities. This research study focuses on Al Sadd, a mixed-use neighborhood located in the center of Doha. Al Sadd is considered a significant site for investigating the extent to which the TOD model can contribute to enhance standards of urban living and fostering a long-term urban sustainability. The strategy for monitoring and assessing the potential benefits of the investigated TOD is grounded on the on-site analysis (based on graph theory) of two indices: (1) built environment diversity and density and (2) travel behavior. The revealed comprehensive approach for the urban regeneration of the Al Sadd TOD is based on a framework for enhancing its (1) mixed-used urban fabric and (2) multimodal transportation systems. In turn, the proposed framework provides insights to move incrementally toward interdisciplinary research and governance for TOD in Qatar and in the globalizing GCC, through a long-term sustainability perspective.Other Information Published in: Environment, Development and Sustainability
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10668-020-00853-4
Vortices with scalar condensates in two-component Ginzburg-Landau systems
Creators: name: Forgacs, Peter
name: Lukács, Árpád
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Physics - Theory (hep-th)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: In a class of two-component Ginzburg-Landau models (TCGL) with a U(1)$\times$U(1) symmetric potential, vortices with a condensate at their core may have significantly lower energies than the Abrikosov-Nielsen-Olesen (ANO) ones. On the example of liquid metallic hydrogen (LMH) above the critical temperature for protons we show that the ANO vortices become unstable against core-condensation, while condensate-core (CC) vortices are stable. For LMH the ratio of the masses of the two types of condensates, $M=m_2/m_1$ is large, and then as a consequence the energy per flux quantum of the vortices, $E_n/n$ becomes a non-monotonous function of the number of flux quanta, $n$. This leads to yet another manifestation of neither type 1 nor type 2, (type 1.5) superconductivity: superconducting and normal domains coexist while various "giant" vortices form. We note that LMH provides a particularly clean example of type 1.5 state as the interband coupling between electronic and protonic Cooper-pairs is forbidden.
description: 11 pages, 1 figure
MPEC 2023-S251 : 2023 OS44
Creators: name: Minor Planet Center Staff
Publisher: name: The Minor Planet Center
Year: 2023
Subjects: subject: Small Solar System bodies
valueUri: http://astrothesaurus.org/uat/1469
subject: 2023 OS44

description: The Minor Planet Electronic Circulars contain information on unusual minor planets, routine data on comets and natural satellites, and occasional editorial announcements.  They are published on behalf of Division F of the International Astronomical Union by the Minor Planet Center, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Delineating the global plastic marine litter challenge: clarifying the misconceptions
Creators: name: Hahladakis, John N.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Pollution and contamination
Environmental and resources law

description: Plastics, owing to their various beneficial properties (durability, flexibility and lightweight nature), are widely regarded as the workhorse material of our modern society. Being ubiquitously and increasingly present over the past 60 years, they provide various benefits to the global economy. However, inappropriate and/or uncontrolled disposal practices, poor waste management infrastructure, and application of insufficient recycling technologies, coupled with a lack of public awareness and incentives, have rendered plastic waste (PW) omnipresent, littering both the marine and the terrestrial environment with multifaceted impacts. The plastic marine litter issue has received much attention, especially in the past decade. There is a plethora of articles and reports released on an annual basis, as well as a lot of ongoing research, which render the issue either to be overexposured or misconstrued. In addition, there are several misinterpretations that surround the presence and environmental impact of plastics in the oceans and, consequently, human health, that require much more critical and scientific thinking. This short communication aims at unveiling any existing misconceptions and attempts to place this global challenge within its real magnitude, based either on scientific facts or nuances.Other Information Published in: Environmental Monitoring and Assessment
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10661-020-8202-9
A Novel Use of Storage for Improving Grid Matching for Very Large-Scale PV Systems
Creators: name: Solomon, A.A.
name: Faiman, D.
name: Meron, G.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Systems
PV Power Plants

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4112-4115
description: This paper discusses the various interrelationships that exist among PV system size, battery storage
properties and electrical grid characteristics. For this purpose, use is made of hourly plant data for the year 2006 that
were provided by the Israel Electric Corporation. In our previous presentation at the 23rd EUPVSEC, we addressed
the question of how large a PV system can be, in the absence of storage, before substantial amounts of energy must
be dumped owing to the inability of the grid to utilize the solar power as it is generated. Under such restrictions it
was found that only a few percent of the annual grid requirements could be provided by PV. In the present study, it is
shown how the employment of storage enables a variety of system management strategies to be adopted, some of
which could raise solar grid-penetration to the vicinity of 60% of the annual needs.
Forecasting the nearly unforecastable: why aren’t airline bookings adhering to the prediction algorithm?
Creators: name: Thirumuruganathan, Saravanan
name: Jung, Soon-gyo
name: Ramirez Robillos, Dianne
name: Salminen, Joni
name: Jansen, Bernard J.
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: Applied economics
Human-centred computing

description: Using 27 million flight bookings for 2 years from a major international airline company, we built a Next Likely Destination model to ascertain customers’ next flight booking. The resulting model achieves an 89% predictive accuracy using historical data. A unique aspect of the model is the incorporation of self-competence, where the model defers when it cannot reasonably make a recommendation. We then compare the performance of the Next Likely Destination model in a real-life consumer study with 35,000 actual airline customers. In the user study, the model obtains a 51% predictive accuracy. What happened? The Individual Behavior Framework theory provides insights into possibly explaining this inconsistency in evaluation outcomes. Research results indicate that algorithmic approaches in competitive industries must account for shifting customer preferences, changes to the travel environment, and confounding business effects rather than relying solely on historical data.Other Information Published in: Electronic Commerce Research
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10660-021-09457-0
Ad interim: Everyday life of Central American Refugees at the "La 72" shelter in Tenosique, Mexico
Creators: name: Guevara González, Yaatsil
Publisher: name: Universität Bielefeld
Year: 2022
Subjects: subject: 300

description: Based on ethnographic research, this research explores how migratory regimes affect and echo migrants' everyday life. For this, Yaatsil Guevara González investigated the daily lives of Central American migrants on the move, asylum seekers, and recognized refugees in a migrant shelter in Mexico’s southern border. Throughout the thesis, she explored how residents of the shelter first, experienced their daily lives under situations of unexpectedly prolonged waiting, and second, how, based on this condition, they overcame it and handled this interim situation in their continuing trajectories. She discussed 1) the role of places en route, i.e., how placemaking occurs while migrants are on their way; and 2) the meaning of waiting phases in refugees’ affective lives during the journeys. She concluded that waiting is an ambivalent condition in which on the one hand migrants are obliged to live in conditions of precarity, exclusion, and denial, creating states of disenchantment and discouragement. On the other hand, waiting also served as a platform for identifying new strategies and reinventing tactics to search for new aspirations and goals and to cope with the multiplicity of challenges encountered along the migratory routes.
Elemental compositions of particulate matter retained on air condition unit’s filters at Greater Doha, Qatar
Creators: name: Mahfouz, Mohamed M.
name: Yigiterhan, Oguz
name: Elnaiem, A. E.
name: Hassan, Hassan M.
name: Alfoldy, Balint
Publisher: name: Manara - Qatar Research Repository
Year: 2022
Subjects: subject: Environmental engineering
subject: FOS: Environmental engineering
subject: Geochemistry
subject: FOS: Earth and related environmental sciences

description: Elemental composition of airborne dust samples retained by internal filters of air condition units (ACUs) was determined at 12 locations of Doha city, state of Qatar. Twenty-four elements: Al, Ca, Mg, Fe, Na, K, Ti, Zn, P, Sr, Mn, Ba, Cu, Cr, Ni, Pb, V, Mo, Li, Co, Sb, As, Cd, Be, were analysed by ICP-OES technique after acid digestion of the samples. The analysed components reflect 20.6% of the total sample mass. Similar or lower concentration values have been found for As, Cd, Cr, Cu, Mn, Ni, Pb, V, Zn, Al, and Fe compared to the international context of upper crust concentrations, NIST SRM (urban dust), published local dust information of outdoor, and surface terrestrial deposit (STD) counted for 7.2, 0.7, 91.8, 192.8, 369.7, 68.6, 65.3, 52.1, 824.3, 19,791, 20,508 mg/kg, respectively. The coefficient of correlation (p ≤ 0.05) showed significant association of ACUs dust elemental compositions with the main components of the local earth crust and surface deposits, ranging from the lowest 0.77 (Mg–Fe) to the highest 0.98 (Al–Fe), while Ni and V, typical anthropogenic pollutants, are also strongly correlated (0.86). These strong correlation relationships can be interpreted as the contribution of outdoor particulate to the indoor dust. Dendrogram of metal/Al ratios, based on Euclidean distance calculation and average linkage clustering method, distinguished three typical groups. Studying the enrichment factors of the three groups indicated elevated levels of Zn (131), Pb (49), Cu (32), Cd (8) and Ni (5) found indoors compared to the background composition of STD especially at locations in the industrial zone. The major elemental composition of the samples reflects the typical mineral composition of the local dust, while the trace composition demonstrates the influence of indoor sources. The collected ACU filter dust samples show significant contribution of outdoor mineral particles, non-exhaust traffic emission, industrial sources, as well as the influence of indoor activity such as smoking.Other Information Published in: Environmental Geochemistry and Health
 License: https://creativecommons.org/licenses/by/4.0
See article on publisher's website: http://dx.doi.org/10.1007/s10653-019-00304-8
Phenotypic screening using waveform analysis of synchronized calcium oscillations in primary cortical cultures
Creators: name: Sakaguchi, Richi
name: Nakamura, Saki
name: Iha, Hiroyuki
name: Tanaka, Masaki
Publisher: name: Zenodo
Year: 2023
Subjects: Calcium oscillation
cultured primary neurons
Mechanism of action

description: At present, in vitro phenotypic screening methods are widely used for drug discovery. In the field of epilepsy research, measurements of neuronal activities have been utilized for predicting efficacy of anti-epileptic drugs (AEDs). Fluorescence measurements of calcium oscillations in neurons are commonly used for measurement of neuronal activities, and some anti-epileptic drugs have been evaluated using this assay technique. However, changes in waveforms were not quantified in previous reports. Here, we have developed a high-throughput screening system containing a new analysis method for quantifying waveforms, and our method has successfully enabled simultaneous measurement of calcium oscillations in a 96-well plate. Features of waveforms were extracted automatically and allowed the characterization of some anti-epileptic drugs using principal component analysis. Moreover, we have shown that trajectories in accordance with the concentrations of compounds in principal component analysis plots were unique to the mechanism of anti-epileptic drugs. We believe that an approach that focuses on the features of calcium oscillations will lead to better understanding of the characteristics of existing anti-epileptic drugs and allow prediction of the mechanism of action (MoA) of novel drug candidates.
description: Calcium imaging A vial of Cal-520 (#21130, AAT-Bioquest) was resuspended to 2 µM in Tyrode's buffer (0.1 mM Mg2+) containing 0.01% Pluronic F-127 (#P3000MP, Invitrogen). The cultures were washed three times in Tyrode's buffer, and incubated in 80 µL of Cal-520 per well for 1 hour at 37°C. Culture plates were set to an assay stage and stabilized for more than 10 minutes before measurement. For calcium imaging, an FDSS/µCell (Hamamatsu Photonics) kinetic plate reader was used. After incubation, 20 µL of compounds dissolved in Tyrode's buffer were dispensed using the 96 dispenser head of the FDSS/µCell and, 5 or more minutes after dispensing, calcium signals were measured for 5 minutes using the following settings: exposure time 36.5 ms, excitation wavelength 480 nm, emission wavelength 540 nm, temperature controlled at 37°C. Data analysis Fluorescence intensity data were extracted using FDSS/µCell software. Data analysis and visualization were processed using the "Wave Finder" in Spotfire (Data Visualization & Analytics Software—TIBCO Spotfire, http://spotfire.tibco.com/) and custom code written in R for PCA. PCA features were selected based on correlation of features and visual inspection of each waveform.
Evaluation of Various PV Technologies in HOKUTO Mega-Solar Project
Creators: name: Ueda, Y.
name: Kudou, M.
name: Konishi, H.
name: Kurokawa, K.
Publisher: name: WIP-Munich
Year: 2009
Subjects: PV Systems
PV Power Plants

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 4119-4122
description: HOKUTO Mega-Solar Project has been conducted in Hokuto city since 2006. One of the objectives is
the evaluation of the advanced PV technologies in the outdoor condition. Single crystalline silicon PV cells and
modules, multi crystalline silicon PV cells and modules, amorphous silicon PV modules, compound-semiconductor
PV modules and spherical solar cells are selected from all over the world. Southerly orientated fixed frames with the
tilt angle of 30 degree are mainly used for the system evaluation. The typical array capacity is 10kW and all the
systems are grid connected. Annual performance ratios and loss are analyzed in this paper. As a result, annual
performance ratios varied from 95.3% to 69.3% among the different systems. The main reason of the higher
performance ratio was the higher system peak power. Monthly system peak power losses factors were stable through
the evaluation period in the single and the multi crystalline silicon and the CIS technologies whereas the amorphous
modules showed degradation and recovery.
Recommendations for web service composition by mining usage logs
Creators: name: Vivek, R
name: Mirje, Prasad
name: Sushmitha, N
Publisher: name: arXiv
Year: 2016
Subjects: subject: Software Engineering (cs.SE)
subject: Databases (cs.DB)
subject: FOS: Computer and information sciences

description: Web service composition has been one of the most researched topics of the past decade. Novel methods of web service composition are being proposed in the literature include Semantics-based composition, WSDLbased composition. Although these methods provide promising results for composition, search and discovery of web service based on QoS parameter of network and semantics or ontology associated with WSDL, they do not address composition based on usage of web service. Web Service usage logs capture time series data of web service invocation by business objects, which innately captures patterns or workflows associated with business operations. Web service composition based on such patterns and workflows can greatly streamline the business operations. In this research work, we try to explore and implement methods of mining web service usage logs. Main objectives include Identifying usage association of services. Linking one service invocation with other, Evaluation of the causal relationship between associations of services