cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Folksonomies versus controlled vocabularies: Theoretical approaches
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2018

description: The purpose is review the literature to identify the epistemological and theoretical approach to the folksonomies and compare them with the theoretical foundations of controlled vocabularies. This paper is a library research. A review of the literature, identify and review theoretical approaches related to the folksonomies includes Critical social theory, Social constructivism, Relativism, Derrida’s deconstruction and hospitality and compared  them with the theoretical foundations of controlled vocabulary .\n\nIn theoretical approaches emphasized that people and users are different and have their different experience and knowledge, So they formed different concepts in mind and used different words to express their concepts that are different from one user to another user. These diversity concepts is represented in folksonomies. But in controlled vocabularies, concepts that only exist in the minds of catalogers is represented which may different with concepts that are in the minds of users. On the other hand, relativity can create the lack of uniformity and it is considered a disadvantage for folksonomies. While, uniformity is considered in controlled vocabularies and is an strength for them. In conclusion reviewed theoretical approaches provide theoretical basis for judging folksonomies capabilities, advantages and disadvantages and comparing them to controlled vocabularies, but must consider findings in future researches.
Publication Delay of Scholarly Journals: A case for Journals Accredited by the Ministry of Science, Research & Technology of Iran
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2017

description: : Publication delay is a negative phenomenon in scientific information dissemination. The current research studies the publication delay of scientific journals accredited by the Ministry of Science, Research & Technology of Iran. It also investigates the association between journals’ characteristics and their publication lag. This study employs the applied research method. All 1156 journals of the Ministry of Science, Research & Technology constitute the population of the study. Publication status of journals until the end of 1394 was investigated using their website as well as the Commission of Scholarly Periodicals’ website. Results of the study showed that 581 out of the 1156 studied journals (50.25%) are published without any delay. However, average publication lag of all 1156 journals is 0.92 issues. Findings revealed statistically significant differences among different majors and fields in regard to their journals’ publication delay. Accordingly, the shortest and longest delay was seen in Veterinary and Humanities journals, respectively. Results showed that characteristics like journal’s rank, using online journal management systems, language of publication, indexing in citation databases as well as journal’s lifetime were significantly related to their publication delay. In other words, those journals with scientific-research rank, those which use online journal management systems, those which publish in English, those which index in national and international citation indices and those with more lifetimes were reported to have lower publication delay. Last but not least, results showed journals of the Kharazmi University, Allameh Tabatabai University and Shahid Beheshti University had the greatest levels of publication delay.
High-Efficiency Micromorph Silicon Solar Cells With In-Situ Intermediate Reflector Deposited on Various Rough LPCVD ZnO
Creators: name: Domine, D.
name: Buehlmann, P.
name: Bailat, J.
name: Billet, A.
name: Feltrin, A.
name: Ballif, C.
Publisher: name: WIP-Munich
Year: 2008
Subjects: Thin Films
Amorphous and Microcrystalline Silicon

description: 23rd European Photovoltaic Solar Energy Conference and Exhibition, 1-5 September 2008, Valencia, Spain; 2091-2095
description: Light management using intermediate reflector layers (IRL) and advanced front transparent conductive oxide (TCO) morphologies is needed to rise the short-circuit current density (Jsc) of micromorph tandem solar cells above 14 mA/cm2. For micromorph cells deposited on surface-textured ZnO layers grown by low-pressure chemical vapour deposition (LPCVD), we study the interplay between the front TCO layer and the IRL and its impact on fill factor and current matching conditions. The key role of the angular distribution of the light scattered by the front LPCVD ZnO layer is highlighted. A micromorph cell with 11.1% stabilized conversion efficiency is demonstrated. By increasing the bottom cell thickness and adding an antireflection coating, a Jsc value of 13.8 mA/cm2 is achieved. This remarkably high Jsc yields 13.3% initial conversion efficiency.
Next-Day Insolation Forecast Over Wide Area by Using Just-In-Time Modeling
Creators: name: Suzuki, T.
name: Wakao, S.
name: Oozeki, T.
Publisher: name: WIP-Munich
Year: 2010
Subjects: PV Systems
Large PV Power Plants and High Penetration of Distributed PV: System Aspects and Grid Integration

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 5011-5016
description: PV power output mainly depends on the solar irradiance which is affected by various meteorological
factors. So, it is required to predict solar irradiance in the future for efficient operation of the PV systems. There are
two basic techniques of the prediction; black-box model based on statistics and information theory, and physical
model with thermodynamics and hydrodynamics. In this paper, first, we propose a novel approach for next-day
insolation forecast, in which we introduce to combine the black-box model with publicly-available weather
information obtained by the physical model.
Generally, as investigated area becomes large, prediction accuracy is improved. It is called smoothing effect.
Therefore, next, we investigate forecast of solar irradiance over wide area taking the account of smoothing effect,
which is necessary in the future when photovoltaics will be introduced in large amount.
Fault-Ride-Through Capability of Photovoltaic Inverter
Creators: name: Tounsi, B.
name: Duval, J.
name: Thibert, M.
Publisher: name: WIP-Munich
Year: 2010
Subjects: PV Systems
Large PV Power Plants and High Penetration of Distributed PV: System Aspects and Grid Integration

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4992-4996
description: The paper presents simulation results related to the dynamic behaviour of photovoltaic (PV) inverter
during a voltage drop. A PV-inverter model implemented on the electromagnetic transient program EMTP-RV was
developed in order to define an adequate regulation to connect inverters with enhanced ride through capabilities.
The efficacy of Iran increasing researches in the country development
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2017

description: In recent decades, research has grown increasingly in Iran and consequently, the country has risen dramatically in world rankings based on the number of scientific documents. However, there are many evidences that show these researches were ineffective. Therefore, their efficacy should be evaluated which is the main purpose of this study. In this regard, using the descriptive-analytical method and valid secondary data and statistics, the most recent situation or the trend of impact pathway components (from investment to development) were compared with other countries. The required data were extracted from valid databases including UNESCO, World Bank, OECD, Thomson Reuters, SCImago, Islamic Parliament Research Center, National Iranian Productivity Organization, Harvard University, Massachusetts Institute of Technology (MIT), and Enerdata. The necessary calculations and rankings were done using Excel 2007. The results showed that, first, compared with other countries, Iran hasn’t given high priority to research and isn’t in a serious way to address this matter because in 2010 it ranked 66 (among 89 countries) based on share of R&D expenditure in GDP, 54 (among 88 countries) based on R&D expenditure per capita, 57 (among 72 countries) based on R&D expenditure per researcher, 79 (among 89 countries) based on average investment per research, and in 2000 it ranked 19 (among 21 countries) based on share of basic research in total R&D expenditure. Second, apart from the period leading to 2006, despite an impressive growth in research quantity, Iran share of High Technology products in industrial export shows deterioration. Third, during 1980-2014 Iran Economy Complexity Index has always been negative and placed among third weakest countries. Forth, despite a unique growth in science production, Iran couldn’t increase its total factor productivity and has fallen dramatically in world rankings based on energy intensity and GDP per unit of energy used. Therefore, according to the results of current and preceding studies, it is clear that even if there is no external deterrent, these researches cannot still play a tangible role in Iran development.
On the Formation of Galactic Black Hole Low-Mass X-ray Binaries
Creators: name: Wang, Chen
name: Jia, Kun
name: Li, Xiang-Dong
Publisher: name: arXiv
Year: 2016
Subjects: subject: High Energy Astrophysical Phenomena (astro-ph.HE)
subject: FOS: Physical sciences

description: Currently, there are 24 black hole (BH) X-ray binary systems that have been dynamically confirmed in the Galaxy. Most of them are low-mass X-ray binaries (LMXBs) comprised of a stellar-mass BH and a low-mass donor star. Although the formation of these systems has been extensively investigated, some crucial issues remain unresolved. The most noticeable one is that, the low-mass companion has difficulties in ejecting the tightly bound envelope of the massive primary during the spiral-in process. While initially intermediate-mass binaries are more likely to survive the common envelope (CE) evolution, the resultant BH LMXBs mismatch the observations. In this paper, we use both stellar evolution and binary population synthesis to study the evolutionary history of BH LMXBs. We test various assumptions and prescriptions for the supernova mechanisms that produce BHs, the binding energy parameter, the CE efficiency, and the initial mass distributions of the companion stars. We obtain the birthrate and the distributions of the donor mass, effective temperature and orbital period for the BH LMXBs in each case. By comparing the calculated results with the observations, we put useful constraints on the aforementioned parameters. In particular, we show that it is possible to form BH LMXBs with the standard CE scenario if most BHs are born through failed supernovae.
description: 20 pages, 13 figures, accepted by MNRAS
Providing a Model for Strengthening the Economic Impacts of the National Information Network
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2017

description: National Information Network is a local network and includes national data centers, communications infrastructure and software services. It will be deployed throughout the country, and provide e-government services and welfare and social services by optical fiber and broadband at 12 Mbps for Iranian people. Combination of national network and ICT lead to many direct and indirect impacts. The direct impacts are results of investment in technology and infrastructure development and indirect impacts are results of the economic activities by the national network. The national network generate new business models, new process, new innovations, new products and services and provides improved flexibility and competitiveness. According to the important role of national network in economy, and also because of the lack of a comprehensive model for strengthening the economic impacts of the national information network, this study is seeking to develop a model for strengthening the impacts of national information network. To conduct this research, documentary study and interview with experts in the national information network have been used. Based on the results of this paper, proposed model consists of three main steps as: feasibility study and developing a business strategy, implementation (planning and control), and  evaluating the economic impacts of the national information network and policy-making for it.
An organizing principle for two-dimensional strongly correlated superconductivity
Creators: name: Fratino, L.
name: Sémon, P.
name: Sordi, G.
name: Tremblay, A. -M. S.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Strongly Correlated Electrons (cond-mat.str-el)
subject: Statistical Mechanics (cond-mat.stat-mech)
subject: Superconductivity (cond-mat.supr-con)
subject: FOS: Physical sciences

description: Superconductivity in the cuprates exhibits many unusual features. We study the two-dimensional Hubbard model with plaquette dynamical mean-field theory to address these unusual features and relate them to other normal-state phenomena, such as the pseudogap. Previous studies with this method found that upon doping the Mott insulator at low temperature a pseudogap phase appears. The low-temperature transition between that phase and the correlated metal at higher doping is first-order. A series of crossovers emerge along the Widom line extension of that first-order transition in the supercritical region. Here we show that the highly asymmetric dome of the dynamical mean-field superconducting transition temperature $T_c^d$, the maximum of the condensation energy as a function of doping, the correlation between maximum $T_c^d$ and normal-state scattering rate, the change from potential-energy driven to kinetic-energy driven pairing mechanisms can all be understood as remnants of the normal state first-order transition and its associated crossovers that also act as an organizing principle for the superconducting state.
description: 6 pages, 2 figures and supplementary information
Science and technology policy maker’s information needs in Iran
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2017

description: Science and technology (S&T) policy makers need up to date and comprehensive information on different entities in S&T domain to make appropriate policies. This research with the aim of determining information needs of S&T policy makers in Iran has studied the different aspects of S&T policy maker’s information needs and information sources are used by them. Qualitative approach with qualitative survey method is used for doing this research. Required data are gathered using semi-structured interviews. The results revealed that S&T policy makers need up to date, integrated, comprehensive, and summarized statistical and analytical information about different entities in S&T area in the form of different indicators. Their required information covers different types of entities in S&T domain including human resources, research organizations, products, research funding, publications and research projects. The results showed that currently policy makers obtain their required information from different sources including statistical centers, reports, databases, organizations, and experts. Developing a comprehensive information system containing information about different indicators and entities in S&T domain and existing of professional centers able to provide consultancy service for policy makers are very useful for them.
Flicker and Photovoltaic Power Plants
Creators: name: Kjær, S.B.
Publisher: name: WIP-Munich
Year: 2010
Subjects: PV Systems
Large PV Power Plants and High Penetration of Distributed PV: System Aspects and Grid Integration

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 4997-4999
description: Flicker caused by Photovoltaic Power Plants (PV-PP) is of interest, since larger and larger PV-PP is
incorporated into the medium- and high-voltage distribution networks. Besides, performing on-site or laboratory
measurements of flicker is very time consuming. According to EN 61400-21 [1] a series of measurements takes
minimum 25 hours of continuous work in the laboratory or several days/weeks on-site for real wind turbine power plants.
The present research is made to clarify whether flicker caused by PV power plants is a real problem or not. This is done
by recording irradiance and injected power into the network for a small PV power plant, followed by calculations of the
flicker values, Pst and Plt respectively. The computed value is hereafter compared with the given requirements.
Localization and Ranking of Social Business Model Elements for Iran’s Public Research Institutes
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2017

description: One of the main challenges in revenue making of the knowledge raised from academic researches is decision making about an appropriate business model for transferring it from academic world to real world. This research has been accomplished for designing public research institutes social business model. Due to the lack of local business models in this field, novelty and multi-dimensionality of the subject, and as an introductory research, Delphi method is used in this research for obtaining innovative ideas, in which its members has been chosen among business experts. Delphi process has been accomplished 3 times for reaching an agreement about main elements of the model. The extracted elements were weighted using Shanon Antropy method. Finally, the 10 main elements: awareness of new demands before research, proposed value, revenue flow, awareness of latest technological progress, business structure, business assessment, key resources, key activities, customer segmentation and feasibility study for business model has been extracted respectively. Two elements, awareness of new demands before research and awareness of latest technological progress were both proposed by panel members and other 8 elements were extracted from literature. Obtained results indicate that not all traditional business organisms are suitable for public bodies and considering some local elements based on panel experts ideas is necessary for designing public research institute social business model.
The Analysis of Iranian Universities Ranking Using the Scientometric Indicators
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2017

description: Nowadays, universities and higher education institutions have a critical role in developing countries and it is essential that their performance is evaluated with appropriate methods and criteria. Among the various functions of universities, research and scientific production is the most important one. The evaluation of scientific outputs is an attempt to assess the performance of universities. The use of scientometric indicators is a way to assess the scientific outputs of universities. In this context, a number of indicators have been defined to assess the quantity and quality of scientific outputs of researchers that can be extended to assess the institutions. Through a descriptive survey, in this paper, 285,526 scientific outputs of 76 universities affiliated to Ministry of Science, Research and Technology were selected and evaluated. The data of each university were analyzed individually using the indicators such as the number of scientific outputs, number of citations, h-index, m-parameter and g-index and the institutions were ranked. The results show that Tehran University in number of scientific outputs and number of citations, Sharif University of Technology in h-index and g-index, and Babol Noshirvani University of Technology in m-parameter are as the top Iranian Universities in the surveyed universities. The overall ranking shows that Tarbiat Modares University and Sharif University of Technology are top. Finally, we compare and discuss our ranking results with ISC and URAP ranking systems. The results show that the ranking of universities in this research in terms of the number of scientific outputs, the number of citations, h-index and g-index has a high correlation with that of ISC and URAP systems.
Analysis of Screen-Printed Silicon Solar Cell Emitters
Creators: name: Nguyen, V.
name: Reuter, M.
name: Gedeon, P.
name: Zapf-Gottwick, R.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1923-1925
description: The emitter saturation current density of three emitters with sheet resistance e = 60, 80 and 100 /sq
but with the same surface concentration are analyzed as a function of surface recombination velocity S. We found that
60, 80 and 100 /sq emitter sets an upper limit for open-circuit voltage of mc-Si solar cells at VOC = 640, 650 and 660
mV. The recombination takes mainly place at the emitter surface and within the thin heavily doped part. The thin
heavily doped part contributes up to 95 % absolute to the recombination of the emitter bulk. Lifetime measurements
of multicrystalline wafers with 60 /sq passivated by SiNx show an emitter saturation current density of J0e = 960
fA/cm2. This value is equivalent to an open circuit voltage of VOC = 627 mV which is close to the VOC = 625 mV of
our finished mc-Si solar cells.
The Relationship between Web of Science and ResearchGate Indicators of Iranian Researchers’ Top Papers
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2017

description: The present study aimes to assess “Top Papers” of Iranian researchers and includes “Highly Cited Paper” and “Hot Papers” based on Citation Indicators of Web of Science and Altmetrics Indicators of Reseach Gate. This is an applied research and was conducted using Scientometric and Altmetrics indicators. The required data was collected from SCI and ResearchGate. SPSS version 16 was used to analyze the collected data. All articles by Iranian researchers indexed in SCI by the end of May 2015 (245578 articles) were chosen. From among these articles, 909 articles introduced as “Top Papers”. This collection of articles was cited 77710 times. Rate coverage of articles in ResearchGate was 99.6%. In addition, 99.5% of the articles indexed in ResearchGate were viewed at least once. The results showed that the correlation coefficient between variables of view, download and citation number of the articles in ResearchGate and citation number of the articles in SCI were positive and significant. The results showed also that network coverage and counts of view and downloads in ResearchGate were excellent. Increased number of views of articles in ResearchGate increased the number of citations of papers too. The results showed the significant effect of ResearchGate in increased visibility of scientific works. Therefore, scholars can use Scientific Social Networking Sites as a means of “self-archiving” and as a tool of “Finding information”. This Social Network can also be used as a criterion for scientific-research evaluation of academics and scholars in science policy-making.
Designing Semiautomatic System In Ontology Structure by To Co-occurrence word Analysis  and C-value Method (Case Study: The field of Scientometrics of Iran)
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2017

description: Ontology is one of formal concepts and the relations in the specific regions.It have recently tried to design the learning, automatic methods of Ontology. Whereas Ontology containing concepts and the relations, exploiting concepts, the semantic relations among concept. The various Ontology of regions and different applications are expensive processes that are automatic.The lack of main knowledge such as terminology, the database of knowledge, gaining knowledge of Ontology will make problem in different fields.The present study tries to gain knowledge in the science-logy of Iran due to semi-automatic method that exploit the knowledge of Ontology, therefore, at first, the documents of Domain were collected by digging-text method, automaticfeature, then, it was in the next step that C-value method of main concepts were exploited, they were branched by documents of k-means method due to TF-IDF, key concepts were exploited.Finally due to co-occurrence method of words, the hierarchy of concepts were presented by comparing close, common methods in learning Ontology structure.
Industrially Relevant Al2O3 Deposition Techniques for the Surface Passivation of Si Solar Cells
Creators: name: Schmidt, J.
name: Werner, F.
name: Veith-Wolf, B.
name: Zielke, D.
name: Bock, R.
name: Tiba, V.
name: Poodt, P.
name: Roozeboom, F.
name: Li, T.A.
name: Cuevas, A.
name: Brendel, R.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 1130-1133
description: We present independently confirmed efficiencies of 21.4% for PERC cells with plasma-assisted atomic-
layer-deposited (plasma ALD) Al2O3 rear passivation and 20.7% for cells with thermal ALD-Al2O3. Additionally,
we evaluate three different industrially relevant techniques for the deposition of surface-passivating Al2O3 layers on
1- Ωcm p-type silicon wafers, namely high-rate spatial ALD (spatial ALD), plasma-enhanced chemical vapour deposition
(PECVD) and reactive sputtering. Using spatial ALD and PECVD, surface recombination velocities (SRVs) below
10 cm/s are obtained. Sputtered Al2O3 layers still provide an SRV of 35 – 70 cm/s. Despite their lower passivation
quality compared to the Al2O3 films deposited by spatial ALD and by PECVD, we demonstrate that the sputtered
Al2O3 layers are still suitable for the fabrication of 20.1% efficient PERC cells. After firing at ~800°C in a conveyorbelt
furnace the SRV provided by the Al2O3 films deposited by spatial ALD is still below 20 cm/s, indicating an excellent
firing stability. Both PECVD and sputtered Al2O3 passivation layers degrade to SRVs larger than 100 cm/s after
firing. Hence, the firing stability of PECVD and – in particular – sputtered Al2O3 needs further optimisation.
Effective Factors on Perception of Faculty Members of Uromia University from Web-based Information Quality Based on CC/LC IQ Model
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2017

description: This study aimed to recognize effective factors on perception of faculty members of Uromia University from web-based information quality based on CC/LC IQ model. Descriptive-survey was used as research method. Data was collected from a sample of 124 faculty members, selected out of the 367 participants of the main society as study population. The data was gathered using Knight’s questionnaire (2007) named “perceptions of information quality”. According to the Results, the contextual information quality (IQ) was of most importance for the users and the representational IQ was of least importance. Accessibility IQ and Intrinsic IQ were of third and fourth importance. The results of this test about the importance of web-based information quality factors show that consistency with the average of 15.78 was the most important factor. Efficiency and value-added factors with the average of 10.35 and 9.80 followed consistency. Conciseness, accuracy and availability with the average of 6.44, 5.42 and 4.41 were the least important factors. Probability levels hypotheses show that there is no significant difference between web-based information quality perception and the individual differences (specialty, academic rank, age and gender) of faculty members of Uromia University. Based on hypotheses test, all the four hypotheses were rejected.
Effect of SiN Deposition Temperature on Surface Passivation of n-Type Cz Silicon Substrates Using Thermal-SiO2/PECVD-SiN Stacks
Creators: name: Larionova, Y.
name: Harder, N.-P.
name: Brendel, R.
Publisher: name: WIP-Munich
Year: 2010
Subjects: Wafer-Based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 25th European Photovoltaic Solar Energy Conference and Exhibition / 5th World Conference on Photovoltaic Energy Conversion, 6-10 September 2010, Valencia, Spain; 1143-1145
description: Improved surface passivation of 2.5 Ω cm n-type Cz silicon substrates by thermal-SiO2/plasmaenhanced
chemical vapour deposition SiN stacks is reported using low temperature (250-300ºC) during the plasmaenhanced
chemical vapour deposition of SiN. Low temperature SiN deposition leads to increasing the hydrogen
content of the SiN layers. This improves the supply of hydrogen to the Si/SiO2 interface and causes improved surface
passivation. Surface recombination velocities lower than 2.4 cm/s for thick (270 nm) SiO2/SiN stack are obtained by
this method after post-deposition annealing at 400°C. The subsequent annealing is necessary for achieving optimum
in passivation quality.
Measuring Online-Shopping Customer Satisfaction by Combining Data Mining Technique and Fuzzy Kano Model (Case Study: Nyazco Website)
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2017

description: Nowadays, one of the most important things that make companies pay attention to the customer satisfaction is the competition in the world and companies struggle to achieve sustainable competitive advantage and strategic superiority over their competitors. The aims of this research is to identify the customers’ requirement in Nyazco online shopping and cluster these customers based on two methods, k-means algorithm and fuzzy Kano model, in order to offer products according to each customer’s needs. In this study, 1090 records of customers were examined for data mining of these customers in the period of 7 months, and four clusters of customers were defined. To measure the customers’ satisfactions, the fuzzy Kano questionnaire was designed and randomly assigned to 168 customers, who were selected based on Cochran formula, and finally, the requirements of each cluster were investigated and classified by using fuzzy Kano model. The results of this research show that the category of some characteristics is different between some clusters and is the same between other clusters. Also, the satisfaction and dissatisfaction score is calculated for each cluster. The results of this study indicate that the customers of the third cluster are more important for this site because the transaction frequencies of these customers and the total amount of purchasing are high. The result of this study will help other online shopping centers for better presentation of goods to different customers.
Plasma Dry Surface Treatment for Multicrystalline Silicon Wafers
Creators: name: Serenelli, L.
name: De Iuliis, S.
name: Salza, E.
name: Izzi, M.
name: Tucci, M.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1882-1886
description: In this work we propose a process, based only on reactive ion plasma, to remove saw damages and
perform a texturization of multicrystalline silicon wafers. To this purpose we investigate the use of different gas
mixtures of NF3 and O2, Ar and H2 in a direct parallel plate Plasma Enhanced Chemical Vapor Deposition (PECVD)
system. Different anisotropy occurs depending on which mixture is used. One of the main limitation of this process is
the surface contamination by fluorine radicals. To overcome this problem we employ different plasma cleaning.
From a visual inspection after treatment, the textured wafer looks like a single crystal one. We obtain an Effective
Reflectance (Reff) of 16.6%, that is lower than the average values (23.2%) of industrial acidic isotexturing process.
Covering the wafer with PECVD silicon nitride layer we have reached an Reff of 6.49%, that is able to increase of
one absolute point at percent the solar cell efficiency fabricated using this dry process.
Applying Data Mining Technique in order to Categorize the Target Users of the Central Library of Isfahan University of Technology (Studying the Motives and Information Seeking Behaviors of Them)
Publisher: name: Iranian Research Institute for Information Science and Technology (IranDoc)
Year: 2017

description: The present study classifies target users of Central Library of Isfahan to identify their behaviors and information needs. The research uses applied and descriptive-survey method with quantitative approach using neural network techniques in data-mining. The research tool was a researcher-made questionnaire including 64 items with the average reliability of Cronbach’s alpha coefficient 0.862. The sample population consisted of 356 faculty members and graduate students of Isfahan University of Technology in the year 1393-94. Using MATLAB, they were clustered based on each of the main components of the study (the purpose and motivation of information-seeking, the amount of using information sources, information-seeking obstacles and skills, and the amount of using information services). Removing each of the research’s sub-components of the main components demonstrated the highest purpose and motivation of information-seeking among the target population, and the least effective were reaching a scientific level and competition with rivals; the information sources mostly needed by library users were translations of Latin books, and their minimum requirements were reports and research schemes; the main barrier to their information-seeking was lack of access to proper Internet and the least effective factor in lack of access to information sources was inconvenient use of the sources; the skill of awareness about the required information and access to information channel are most efficient items in the information seeking skills. The most inefficient item is the ability of users in recognizing the importance of obtained information from their searches with respect to their required information; the most effective services in meeting the information needs of the users were the ability of librarians and information science experts in information retrieval and their knowledge of information services and resources, and the least effective were familiarity with a variety of information services and resources in their professional major and possibility of using the information sources in the form of digital files needless of attending libraries. According to the purpose and results of the present study, it is possible to classify target users of libraries via using neural network technique in data-mining, based on their needs and information-seeking behaviors.
Secondary fast reconnecting instability in the sawtooth crash
Creators: name: Del Sarto, Daniele
name: Ottaviani, Maurizio
Publisher: name: arXiv
Year: 2016
Subjects: subject: Plasma Physics (physics.plasm-ph)
subject: FOS: Physical sciences

description: In this work we consider magnetic reconnection in thin current sheets with both resistive and electron inertia effects. When the current sheet is produced by a primary instability of the internal kink type, the analysis of secondary instabilities indicates that reconnection proceeds on a time scale much shorter than the primary instability characteristic time. In the case of a sawtooth crash, non-collisional physics becomes important above a value of the Lundquist number which scales like S ~ (R/d_e)^{12/5}, in terms of the tokamak major radius R and of the electron skin depth d_e. This value is commonly achieved in present day devices. As collisionality is further reduced, the characteristic rate increases, approaching Alfvénic values when the primary instability approaches the collisionless regime.
description: 7 pages, 3 figures
Central Places and Their Environment – Preliminary Results from the Research Group
Creators: name: Schütt, Brigitta
name: Meyer, Michael
Publisher: name: Freie Universität Berlin
Year: 2011
Subjects: subject: 900 Geschichte und Geografie::910 Geografie, Reisen
subject: 900 Geschichte und Geografie::930 Geschichte des Altertums (bis ca. 499), Archäologie

description: The projects of the Research Group »Central Places and Their Environment« involved investigations of individual sites having the character of central places or of limited regions within which networks of settlements were present. Cities, seats of power, and sacred sites are investigated in terms of their significance for and shaping influence on surrounding regions. These themes are explored through direct collaborations between scientists from the archaeological and earth sciences respectively. The focus of our investigations is the network of relations between central sites or settlements in spaces of limited extension and their surroundings. This involves reconstructing the development of the respective central site and of the historical landscape, as well as of various site factors, and analyzing the structure of relationships with the surrounding territory and the connecting region. The types of influence exerted by such central places on the surrounding space are compared in terms of various cultures, regions, and societal systems. The focal areas of investigation are the Mediterranean region, the Black Sea area, Central Asia, and the Middle East. Studies include central places for which adequate historical sources are available, but also sites from preliterate epochs.
Evasão docente e biopoder: um estudo de caso na graduação em Enfermagem
Creators: name: Magalhães, Adriana S.
name: dos Santos, Daniel
Publisher: name: Zenodo
Year: 2023
Subjects: gestão escolar professor
regularidade docente;
biopoder
ensino superior

description: A permanência de professores no ensino superior é um desafio enfrentado no mundo inteiro e tem impacto para a gestão acadêmica. Este trabalho teve por objetivo investigar fatores de governança e biopoder associados ao abandono docente de um curso de graduação em Enfermagem da rede pública do Distrito Federal. Utilizou-se base de dados provenientes da Secretaria de Saúde do Distrito Federal (SES-DF) na qual o curso está inserido que permitiram acompanhar, entre 2011 a 2020, a trajetória de 144 professores que foram selecionados e cedidos no transcorrer do período estudado. As análises utilizaram cálculos para estimar o Índice de Regularidade Docente (IRD) instituído pelo Instituto Nacional de Estudos e Pesquisas Educacionais Anísio Teixeira (INEP) como indicador de qualidade institucional. Os resultados indicam que a regularidade docente é baixa e sua permanência na docência é de apenas quatro anos. Além disso, características como a inexistência de carreira docente e a fragilidade do vínculo funcional, também se mostraram fatores associados ao abandono docente.
An Incoherent Empire: Environment, imperial networks, and administrative disorder in British Malaya, 1786-1930s
Creators: name: JOANNA WEN CHING LEE
Publisher: name: Monash University
Year: 2019
Subjects: History

description: Many environmental histories of British Malaya have focused on the economic activities of rubber planting and tin mining, as well as their effects. In this thesis, however, I move away from these concerns to instead study how British colonial officials interacted with and perceived British Malaya's environment, c.1786-1930s. Doing so, I demonstrate how the colonial administration of British Malaya was more haphazard and disorderly than previously implied. In particular, I argue that this prevailing sense of administrative incoherence was facilitated by dysfunctional imperial networks and the presence of multiple, contradictory colonial projects.
title: Variable Redundancy Coding for Adaptive Error Control
Creators: name: Goodman, R. M. F.
Publisher: name: University of Kent
Year: 2022

description: This thesis is concerned with variable redundancy(VR) error control coding. VR coding is proposed as one method of providing efficient adaptive error control for time-varying digital data transmission links. The VR technique involves using a set of short, easy to implement, block codes; rather than the one code of a fixed redundancy system which is usually inefficient, and complex to decode. With a VR system, efficient data-rate low-power codes are used when channel conditions are good, and very high-power inefficient codes are used when the channel is noisy. The decoder decides which code is required to cope with current conditions, and communicates this decision to the encoder by means of a feedback link. This thesis presents a theoretical and practical investigation of the VR technique, and aims to show that when compared with a fixed redundancy system one or more of the advantages of increased average data throughput, decreased maximum probability of erroneous decoding, and decreased complexity can be realised. This is confirmed by the practical results presented in the thesis, which were obtained from field trials of an experimental VR system operating over the HE’ radio channel, and from computer simulations. One consequence of the research has been the inception of a study of codes with disjoint code books and mutual Hamming distance (initially considered for combatting feedback errors), and this topic is introduced in the thesis.
Mindfulness: the Feeling of Being Tuned-in, and Related Phenomena
Creators: name: EROL COPELJ
Publisher: name: Monash University
Year: 2019
Subjects: subject: Philosophy
subject: FOS: Philosophy, ethics and religion

description: This thesis offers a phenomenological description of what it is like to be mindful and of the kind of possibilities that mindfulness opens up. It also address the question of how being mindful opens up the way for a specific kind of knowledge.
title: Multimodal pretraining for music audio
title: Πολυμεσική προεκπαίδευση για μουσικά τραγούδια
titleType: AlternativeTitle
Creators: name: Sideras, Andreas
name: Σιδεράς, Ανδρέας
Publisher: name: Πανεπιστήμιο Πειραιώς
Year: 2024
Subjects: subject: Multimodal
subject: Audio
subject: Pretraining
subject: Music
subject: Finetuning
subject: Metric learning

description: Τα δεδομένα μπορούν να αποτυπώνονται σε διάφορες μορφές και μέσα. Για παράδειγμα, θα μπορούσαμε να συναντήσουμε δεδομένα ήχου που συνοδεύονται από κείμενα αναφορικά με τους στίχους τους. Τα σύγχρονα συστήματα εκμεταλλεύονται, όταν είναι διαθέσιμες, τις πολλαπλές πηγές πληροφοριών και αυξάνουν την απόδοσή τους. Σε αυτές τις περιπτώσεις, κάθε μέσο αποτυπώνει μια διαφορετική σημασιολογική διάσταση των δεδομένων. Πέρα από τη πολυμεσική τους φύση, το πλήθος των δεδομένων μπορεί να είναι περιορισμένο και να έχουμε έλλειψη επισημειώσεων για αυτά. Τεχνικές όπως η μεταφορά γνώσης και η προεκπαίδευση συχνά βοηθούν σε αυτές τις συνθήκες. Στην διπλωματική αυτή ερευνούμε διάφορους τρόπους προεκπαίδευσης ενός μοντέλου με σκοπό τη βελτιστοποίηση της απόδοση σε ένα διαδοχικό πρόβλημα για το οποίο έχουμε λίγα δεδομένα και επισημειώσεις. Ο στόχος μας είναι να εκπαιδεύσουμε ένα μοντέλο, το οποίο είναι ικανό να εξάγει χρήσιμα χαρακτηριστικά και να χρησιμοποιηθεί σε οποιοδήποτε διαδοχικό πρόβλημα. Χρησιμοποιούμε ένα Μεγάλο Γλωσσικό Μοντέλο (ΜΓΜ) ώστε να εξάγουμε προτάσεις που σχολιάζουν το συναίσθημα και το θέμα των στίχων σε έναν σύνολο μη επισημειωμένων μουσικών τραγουδιών. Κατά τη διάρκεια της προεκπαίδευσης μαθαίνουμε έναν χώρο στον οποίο συσχετίζουμε το ηχητικό σήμα με τα κείμενα των σχολιασμών. Στη συνέχεια εκπαιδεύουμε το μοντέλο στο επισημειωμένο σύνολο δεδομένων, όπου το μοντέλο δέχεται σαν είσοδο μόνο το ηχητικό σήμα. Υπογραμμίζουμε τη σημαντική αύξηση στην απόδοση του διαδοχικού προβλήματος, ειδικά σε συνθήκες όπου ελάχιστα δεδομένα είναι διαθέσιμα, τη χρήση των ΜΓΜ στο βήμα της προεκπαίδευσης και τη σημασία του να εισάγουμε πληροφορία αποτυπωμένη σε διαφορετικά μέσα.
Gettering Effects and FG Annealing on Thin RST Ribbon Silicon Solar Cells
Creators: name: Focsa, A.
name: Slaoui, A.
name: Schmitt, S.
name: De Moro, F.
name: Jolivet, E.
name: Belouet, C.
name: Van Kerschaver, E.
name: Robbelein, J.
Publisher: name: WIP-Munich
Year: 2009
Subjects: Wafer-based Silicon Solar Cells and Materials Technology
Mono- and Multicrystalline Silicon Materials and Cells

description: 24th European Photovoltaic Solar Energy Conference, 21-25 September 2009, Hamburg, Germany; 1887-1892
description: Here we report on the influence of various thermal processes such as gettering, hydrogen passivation
and forming gas annealing (FGA) on the RST (Sacrificial carbon Template) -ribbons solar cells properties. We have
prepared the emitter and back surface field regions either by simultaneous thermal diffusion of phosphorus and
gettering aluminium in a single step or by a two steps diffusion/gettering process. We show that the later process
offers much higher short circuit current and finally higher cell efficiency is reached. We have also compared the
effectiveness of plasma hydrogenation prior (process A) or after (process B) the SiN:H antireflection layer deposition.
However a direct ECR-RF plasma applied to material surface might damage the emitters for process A or SiN:H
layer for process B during the hydrogenation step. The best measured efficiency on the grown ~120-140μm thick RST
sheets achieved 11.7% for both processes but a much higher open circuit voltage for process A. Suns-Voc method
applied to our RST cells shows a 13.2% efficiency assuming a FF of 77%. On the other hand, we have investigated
the effect of FGA (90%N2+10%H2) treatments at 350°C/30min in conventional furnace on the electrical
characteristics (I-V) and spectral responses of RST based cells. The observed improvement in short circuit current
and fill factor might be attributed to additional bulk passivation as well as to better contact sintering.