cometadata/datacite-rtg-text-other-reclassification-records huggingface dataset:
Corrosion Testing of FPV Materials in Off-shore
Creators: name: Gang, M.
name: Kim, D.C.
name: Kim, S.D.
name: Kim, H.J.
name: Jo, H.
name: Shin, S.
name: Won, C.S.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
Materials for PV Modules, Durability, Reliability and Accelerated Testing Methods

description: 8th World Conference on Photovoltaic Energy Conversion; 921-923
description: In the present work, we demonstrate the case study and outcomes of the corrosion effect based on the Marine Research Floating photovoltaic (FPV) test-bed installed in 2021 on Saemangeum (seawater lake) in South Korea. We developed the floating PV system in collaboration with K-Water (water resource manager) to install marine solar power facilities. However, the corrosion control and preservation of floating PV structures are important factors in increasing durability in these regions. Accordingly, the possibility of installation in the corrosive environment was studied through corrosion exposure tests of floating PV structure materials. To study this, the corrosion grades of floating PV structure materials (metals) in marine environments were classified based on ISO 9223 standard. At the same time, the corrosion rate of standard specimens for the corrosive evaluation was determined based on ISO 9226 standard. After the test specimen was installed, the corrosion rate study was conducted every 3 months. The atmospheric corrosion of PosMAC [Ternary alloy coated steel (Zn-3%, Mg-2.5%, Al)], stainless steel, and aluminum was evaluated in Saemangeum (seawater lake) for 1 year. The specimen holder unit was composed of a material that did not affect the corrosion of the specimen. In addition, it was designed to minimize the occlusion of the specimen. The fabricated specimen holder unit was installed on a test-bed located in the sea. After the exposure test had been completed, the corrosion layers were removed by the chemical cleaning procedure according to metal type. Finally, the corrosion rate was evaluated by measuring the weight loss.
Visualizing Band Offsets and Edge States in Bilayer-Monolayer Transition Metal Dichalcogenides Lateral Heterojunction
Creators: name: Zhang, Chendong
name: Chen, Yuxuan
name: Huang, Jing-Kai
name: Wu, Xianxin
name: Li, Lain-Jong
name: Yao, Wang
name: Tersoff, Jerry
name: Shih, Chih-Kang
Publisher: name: arXiv
Year: 2015
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: Semiconductor heterostructures are fundamental building blocks for many important device applications. The emergence of two-dimensional semiconductors opens up a new realm for creating heterostructures. As the bandgaps of transition metal dichalcogenides thin films have sensitive layer dependence, it is natural to create lateral heterojunctions using the same materials with different thicknesses. Using scanning tunneling microscopy and spectroscopy, here we show the real space image of electronic structures across the bilayer-monolayer interface in MoSe2 and WSe2. Most bilayer-monolayer heterojunctions are found to have a zigzag-orientated interface, and the band alignment of such atomically sharp heterojunctions is of type-I with a well-defined interface mode which acts as a narrower-gap quantum wire. The ability to utilize such commonly existing thickness terrace as lateral heterojunctions is a crucial addition to the tool set for device applications based on atomically thin transition metal dichalcogenides, with the advantage of easy and flexible implementation.
description: 19 pages in total, 4 figures and 1 table
Assessment of ECA to Ribbon Interconnection Stability by Current Path and Power Loss Imaging
Creators: name: Grosser, S.
name: Schak, M.
name: Timofte, T.
name: Turek, M.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
Materials for PV Modules, Durability, Reliability and Accelerated Testing Methods

description: 8th World Conference on Photovoltaic Energy Conversion; 907-911
description: Solar cells with back-junction technology exhibit the metallization at the rear side of the solar cell thus gaining from a shading free sunny side. Electrical interconnections between the solar cells and ribbons in a string are exposed to various stresses during manufacturing of the module. Additionally, they are stressed by environmental conditions during field operation. We present a study of electrical-conductive adhesive (ECA) joints for back-junction (BJ) solar cell technology focusing on advanced defect diagnostics of the joints during and after climate stress. To assess the stability and prevent failures, advanced diagnostic methods for joints are needed which provide fast nondestructive and spatial-resolved information on the lateral current flow. Commonly, inspection techniques rely on electroluminescence imaging (EL) or visual inspection (VI). However, they are not sufficient since the information depends on indirect impacts. In this work, a comprehensive application by means of the magnetic-field imaging (MFI) and Lock-In Thermography (LIT) will be presented and compared to standard imaging techniques. MFI allows imaging of the lateral current paths or local current interruptions even inside a laminate while LIT is related to thermal power losses. The benefits of the combined MFI/LIT method for advanced failure diagnostics will be shown on selected defect ECA-joints. The MFI/LIT application offers the opportunity to improve the assessment of ECA-joints aging due to the spatial resolution and fingerprint defect signatures like single defective joints and current-stressed junctions. This will improve the risk assessment of process and design related late defects of interconnections of BJ-solar cells and other technologies. Furthermore, due to the defect localization, advanced material analysis on microscopic scale is applicable by target preparation allowing the determination of the underlying failure mechanism. This approach supports the detailed assessment of ECA to ribbon interconnection and allows a deeper understanding of root causes in terms of degradation mechanisms of different materials and processes.
The Curious Case of Elemental Abundance Differences in the Dual Hot Jupiter Hosts WASP-94AB
Creators: name: Teske, Johanna K.
name: Khanal, Sandhya
name: Ramírez, Ivan
Publisher: name: arXiv
Year: 2016
Subjects: subject: Solar and Stellar Astrophysics (astro-ph.SR)
subject: Earth and Planetary Astrophysics (astro-ph.EP)
subject: FOS: Physical sciences

description: Binary stars provide an ideal laboratory for investigating the potential effects of planet formation on stellar composition. Assuming the stars formed in the same environment/from the same material, any compositional anomalies between binary components might indicate differences in how material was sequestered in planets, or accreted by the star in the process of planet formation. We present here a study of the elemental abundance differences between WASP-94AB, a pair of stars that each host a hot Jupiter exoplanet. The two stars are very similar in spectral type (F8 and F9), and their ~2700 AU separation suggests their protoplanetary disks were likely not influenced by stellar interactions, but WASP-94Ab's orbit -- misaligned with the host star spin axis and likely retrograde -- points towards a dynamically active formation mechanism, perhaps different than that of WASP-94Bb, which is not misaligned and has nearly circular orbit. Based on our high-quality spectra and strictly relative abundance analysis, we detect a depletion of volatiles (~-0.02 dex, on average) and enhancement of refractories (~0.01 dex) in WASP-94A relative to B (standard errors are ~0.005 dex). This is different than every other published case of binary host star abundances, in which either no significant abundance differences are reported, or there is some degree of enhancement in all elements, including volatiles. Several scenarios that may explain the abundance trend are discussed, but none can be definitively accepted or rejected. Additional high-contrast imaging observations to search for companions that may be dynamically affecting the system, as well as a larger sample of binary host star studies, are needed to better understand the curious abundance trends we observe in WASP-94AB.
description: Accepted to ApJ 7 Jan 2016. 21 pages, 5 figures, 3 Tables (1 MRT)
Human-robot collaboration assembly personalised safety detection method based on digital twin
Creators: name: Luo, Guofu
name: Yan, Luyao
name: Wang, Haoqi
name: Li, Hao
name: Wen, Xiaoyu
name: Liu, Gen
name: Zhang, Yuyan
name: Sun, Chunya
name: Yang, Wenchao
name: Xing, Hongwen
Publisher: name: Taylor & Francis
Year: 2024
Subjects: Space Science
Information Systems not elsewhere classified

description: Human-robot collaboration (HRC) in assembly is becoming increasingly popular in the field of intelligent manufacturing. However, safety concerns remain the most critical issue to be addressed. The complex assembly environment and the individual differences of workers make it challenging to ensure safety effectively. Furthermore, the concept of human-centric manufacturing also places higher requirements on safety and efficiency of HRC assembly. The application of digital twin (DT) technology has bolstered the cognitive and decision-making capabilities in the context of HRC assembly. This technological advancement provides essential support for addressing safety concerns in HRC assembly processes guided by a human-centric approach. A personalised safety detection method for HRC assembly based on DT technology is proposed. This approach involves personalised modelling and simulation of real objects within the HRC process, establishing a collision detection model based on skeleton points. Subsequently, human motion prediction methods drive safety monitoring between humans and robots. Ultimately, personalised safety warning strategies are applied to ensure the safety of the assembly process.
Sailors of the network: hackers and cypherpunks in comparison
Creators: name: Valenti, Anna
Publisher: name: Zenodo
Year: 2024

description: The paper "Sailors of the Network: Hackers and Cypherpunks in Comparison" by Anna Valenti examines the differences between hackers and cypherpunks. Hackers focus on modifying technology for freedom and decentralization, while cypherpunks emphasize privacy, encryption, and distributed systems. Despite their different approaches, both groups share a common goal of resisting government control and protecting user data. The paper highlights their distinct ideologies and suggests further research into their evolving relationship.
Effect of strain and temperature on the threshold displacement energy in body-centered cubic iron
Creators: name: Beeler, Benjamin
name: Asta, Mark
name: Hosemann, Peter
name: Gronbech-Jensen, Niels
Publisher: name: arXiv
Year: 2016
Subjects: subject: Materials Science (cond-mat.mtrl-sci)
subject: FOS: Physical sciences

description: The threshold displacement energy (TDE) is the minimum amount of kinetic energy required to displace an atom from its lattice site. The magnitude of the TDE displays significant variance as a function of the crystallographic direction, system temperature and applied strain, among a variety of other factors. It is critically important to determine an accurate value of the TDE in order to calculate the total number of displacements due to a given irradiation condition, and thus to understand the materials response to irradiation. In this study, molecular dynamics simulations have been performed to calculate the threshold displacement energy in body-centered cubic iron as a function of strain and temperature. With applied strain, a decrease of the TDE of up to approximately 14 eV was observed. A temperature increase from 300 K to 500 K can result in an increase of the TDE of up to approximately 9 eV.
Assessment of Interconnection Aging in Shingled Cell Modules
Creators: name: Grosser, S.
name: Schak, M.
name: Pander, M.
name: Turek, M.
name: Jäckel, B.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
Materials for PV Modules, Durability, Reliability and Accelerated Testing Methods

description: 8th World Conference on Photovoltaic Energy Conversion; 912-916
description: Shingled solar cells with Electrically Conductive Adhesive (ECA) interconnection represent a technological path to make very esthetic and efficient modules with lead free interconnection technology. The reliability assessment of the interconnection stability in shingled modules is one major aspect in the material qualification for selection of proper ECAs and process requirements. For shingle technology, commonly used electroluminescence (EL) image interpretation for string or module inspection gets more complex due to the lack of simple fingerprint-like clear features. The aim of this work is the evaluation of non-destructive proof, localization, and quantification of ECA failures in shingled solar cell modules. The Magnetic Field Imaging (MFI) technique has been applied to specifically detect defects in the interconnection. A simplified visualization scheme has been developed and successfully tested. A comparison between stressed shingled strings and their initial data allows the quantitative assessment of mechanical stress-related (bending and cycling) ECA-interconnection failures, their lateral distribution und occurrence frequency. With the application of the MFI-based imaging technique, it is feasible to detect and assess aged ECA interconnections as well as identify string-dependent inhomogeneities in aging. The applicability of the MFI-based approach has been successfully demonstrated and extends EL characterization with specific sensitivity to interconnection reliability assessment.
A Screening Protocol to Assess the Stability of Inks used to Mask Metallic Interconnects in BIPV Modules
Creators: name: Borja Block, A.
name: Escarre Palou, J.
name: Faes, A.
name: Virtuani, A.
name: Ballif, C.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
Materials for PV Modules, Durability, Reliability and Accelerated Testing Methods

description: 8th World Conference on Photovoltaic Energy Conversion; 902-906
description: Aesthetics plays a major role in the development of BIPV products. Several BIPV module manufacturers attempt to mask the reflective metallic interconnects to obtain uniformly colored modules. This is achieved using expensive manufacturing steps, such as colored stripes with manual positioning. Inks could be an alternative to perform this process automatically. However, inks used in BIPV products must be extremely stable and do not alter their visual appearance over time. In this work, we propose a screening protocol to assess the long-term stability of seven commercial black colored inks used to mask ribbons. We apply it to coupons mimicking the structure of conventional glass/glass (G/G) and glass/backsheet (G/Bs) structures encapsulated with EVA and POE, and to one-cell modules with ink-coated ribbons with the help of an in-house developed ribbon coating equipment. The protocol includes three different test sequences. Sequence A involves 250 h of DH (85°C, 85%RH) followed by to 60 kWh/m2 of UV light exposure, sequence B the UV test only, and sequence C adhesion tests. The results show no degradation after the DH test and yellowing with unstable inks after the UV exposure. The electrical performance of modules coated with UV unstable inks, is only slightly affected (~-1%).
Early Detection of Potential-Induced Degradation via the Shunt Resistance in CIGS Thin Film Solar Modules
Creators: name: Gerstenberg, L.
name: Bala Krishnan, R.K.
name: Wesselak, V.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
Materials for PV Modules, Durability, Reliability and Accelerated Testing Methods

description: 8th World Conference on Photovoltaic Energy Conversion; 898-901
description: Additionally to a reduction of VOC, CIGS Thin Fim Solar Modules also show shunting-type PID under negative bias stress. In this paper, a known method to monitor the progress of PID-s in c-Si modules via the shunt resistance is applied to CIGS TFSM. Measuring the dark IV curves of CIGS TFSM directly in the climatic chamber enables linking the change in shunt resistance to the occurring power loss. Results show that the shunt resistance decreases before a change in VOC occurs, which makes the shunt resistance an appropriate PID indicator for CIGS TFSM.
Assessment on the Impact of Supply Chain Management practice on Organizational Performance in the Case of Horizon Addis Tyre S.C
Creators: name: Dessalegn, Banchiyrgu
Publisher: name: National Academic Digital Repository of Ethiopia
Year: 2017

description: Since supply chain management is currently used as a computation tool between businesses, this research was conduct to assess the impact of supply chain management practice on organizational performance on the case company Horizon Addis tyre S.C. To conduct this research the research has three objectives these are to investigate the supply chain management practice of horizon Addis Tyre S.C ,To assess the impact of supply chain management practice on the case company's performance and To identify factors that need to be considered to improve the organization's performance in relation to supply chain management and supply chain management was constructed by five constructs namely strategic supplier partnership, customer relation ,level of information sharing, quality of information sharing and internal lean practice .The research is descriptive in its type the data was collected by distributing questioner to the employees of the company by using purposive sampling technique .The data was analyzed using frequency ,mean ,Pearson correlation and regression and the findings was presented by table and the major findings was that the case company implements almost all supply chain practice in great extent and one of them in moderate extent, from the finding supply chain management have positive relationship with organizational performance. This research is only on the case of Horizon Addis tyre S.C and future research should consider other business organizations. Key words: supply chain management,organizational performance
Low Temperature Solar Cell Encapsulation with Novel Silicone Elastomer for Building Integrated PV
Creators: name: Beaucarne, G.
name: Zelba, M.
name: Jadot, E.
name: Curon, J.
name: Gubbels, F.
name: Hayez, V.
name: Sanabria Arenas, B.
name: Chambard, G.
name: Karoblis, R.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
Materials for PV Modules, Durability, Reliability and Accelerated Testing Methods

description: 8th World Conference on Photovoltaic Energy Conversion; 893-897
description: In this paper we introduce a new silicone solar cell encapsulant technology based on a two-part condensation cure chemistry, and implement with it an encapsulation process involving a dam and fill approach and in-lamination sealing. Bubble-free laminates have been fabricated both in a laboratory laminator and in a large area plate laminator. In order to achieve a transparent edge with water vapor barrier properties, a double edge materials procedure is introduced, where a transparent PIB is used as dam material, and a clear moisture cure sealant is backfilled into the groove between the glass plates and the transparent PIB. This technology is anticipated to be highly suited to BIPV applications, where module durability, hotspot resilience and better fire resistance are critical.
Deciphering the Role of Eukaryotic Initiation Factor 5A in Pancreatic Organogenesis
Creators: name: Rutan, Caleb Daniel
Publisher: name: Purdue University Graduate School
Year: 2024
Subjects: classificationCode: 310102
subject: Cell development, proliferation and death

description: The pancreas is composed of a variety of cell types such as acinar, endocrine, and ductal cells, as well as endothelial cells and adipocytes. Whereas we understand the distinct functions of each, there remains an incomplete understanding of the molecular pathways and communications that exist between these cells that may influence development, growth, and function. Given that diabetes is characterized by the destruction or dysfunction of the insulin-producing pancreatic beta cell, a better understanding of the mechanisms that influence cell growth and maintenance in the pancreas is of therapeutic interest. Genome-wide association studies identified eukaryotic initiation factor 5A (eIF5A) to be within a type 1 diabetes susceptibility locus, which also suggests this translation factor may play a role in maintaining beta cell health. EIF5A is active once post-translationally modified by the rate-limiting enzyme deoxyhypusine synthase (DHPS) in a process known as hypusination, producing hypusinated eIF5A (eIF5AHYP). The functional loss of eIF5AHYP via pancreas-specific genetic deletion of Dhps or Eif5a within multipotent pancreatic progenitor cells (MPPCs) results in an mRNA translation defect detectable at E14.5 causing the decreased expression of many proteins required for exocrine growth and function. Moreover, DHPSΔPANC mice die by 6 weeks-of-age; however, eIF5AΔPANC mice survive up to 2 years-of-age. The postnatal phenotype of the eIF5AΔPANC model was investigated in this thesis.
Cubature formulas of multivariate polynomials arising from symmetric orbit functions
Creators: name: Hrivnák, Jiří
name: Motlochová, Lenka
name: Patera, Jiří
Publisher: name: arXiv
Year: 2015
Subjects: subject: Classical Analysis and ODEs (math.CA)
subject: FOS: Mathematics
subject: 65D32, 33C52, 41A10, 22E46, 20F55, 17B22

description: The paper develops applications of symmetric orbit functions, known from irreducible representations of simple Lie groups, in numerical analysis. It is shown that these functions have remarkable properties which yield to cubature formulas, approximating a weighted integral of any function by a weighted finite sum of function values, in connection with any simple Lie group. The cubature formulas are specialized for simple Lie groups of rank two. An optimal approximation of any function by multivariate polynomials arising from symmetric orbit functions is discussed.
description: 19 pages, 4 figures
Basisgemeinden als Thema praktischer Theologie
Creators: name: Müller, Alois
name: Greinacher, Norbert
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 11 Nr. 4 (1975): Concilium: Internationale Zeitschrift für Theologie, Band 11, Heft 4
Short-Pulse, Compressed Ion Beams at the Neutralized Drift Compression Experiment
Creators: name: Seidl, Peter A
name: Barnard, John J
name: Davidson, Ronald C
name: Friedman, Alex
name: Gilson, Erik P
name: Grote, David
name: Ji, Qing
name: Kaganovich, I D
name: Persaud, Arun
name: Waldron, William L
name: Schenkel, Thomas
Publisher: name: arXiv
Year: 2016
Subjects: subject: Accelerator Physics (physics.acc-ph)
subject: FOS: Physical sciences

description: We have commenced experiments with intense short pulses of ion beams on the Neutralized Drift Compression Experiment (NDCX-II) at Lawrence Berkeley National Laboratory, with 1-mm beam spot size within 2.5 ns full-width at half maximum. The ion kinetic energy is 1.2 MeV. To enable the short pulse duration and mm-scale focal spot radius, the beam is neutralized in a 1.5-meter-long drift compression section following the last accelerator cell. A short-focal-length solenoid focuses the beam in the presence of the volumetric plasma that is near the target. In the accelerator, the line-charge density increases due to the velocity ramp imparted on the beam bunch. The scientific topics to be explored are warm dense matter, the dynamics of radiation damage in materials, and intense beam and beam-plasma physics including select topics of relevance to the development of heavy-ion drivers for inertial fusion energy. Below the transition to melting, the short beam pulses offer an opportunity to study the multi-scale dynamics of radiation-induced damage in materials with pump-probe experiments, and to stabilize novel metastable phases of materials when short-pulse heating is followed by rapid quenching. First experiments used a lithium ion source; a new plasma-based helium ion source shows much greater charge delivered to the target.
description: 4 pages, 2 figures, 1 table. Submitted to the proceedings for the Ninth International Conference on Inertial Fusion Sciences and Applications, IFSA 2015
An Exploratory Study on the Role of Sand Erosion on the Degradation of Wet Insulation Resistance of Photovoltaic Modules in a Desert-Like Environment
Creators: name: Desai, U.
name: Singh, A.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
Materials for PV Modules, Durability, Reliability and Accelerated Testing Methods

description: 8th World Conference on Photovoltaic Energy Conversion; 887-889
description: Multi-layered polymeric backsheets in PV modules act as the first line of defense against both environmental and mechanical stressors. Continued exposure of the field stressors during the lifespan of the PV modules can promote degradation of its components, including the backsheets. Degradation of backsheets poses a life hazard since it increases the risk of electrification at high voltages. Desert-storm like conditions can potentially erode the outer layer of the backsheets thereby affecting the insulation capability of the backsheets. Therefore, in this work, we have prepared mini modules of size 5 cm X 5 cm having polyvinylidene fluoride (PVDF) based backsheet. These laminates have been subjected to erosion by sand particles for 30 minutes and 10 m/s velocity at an angle of attack of 30°. It is observed that the erosion of the outer layer of the backsheets affect the wet-insulation resistance of the minimodules when backsheet surface is in wet condition. However, no significant changes after the sand erosion have been observed in the insulation resistance for the dry condition and when the glass is wet. The findings of this study give merit to the sand erosion process of the PV backsheets as an important field stressor.
Hawking radiation from a five-dimensional Lovelock black hole
Creators: name: Saleh, Mahamat
name: Thomas, Bouetou Bouetou
name: Crepin, Kofane Timoleon
Publisher: name: arXiv
Year: 2016
Subjects: subject: General Relativity and Quantum Cosmology (gr-qc)
subject: Cosmology and Nongalactic Astrophysics (astro-ph.CO)
subject: FOS: Physical sciences

description: We investigate Hawking radiation from a five-dimensional Lovelock black hole using the Hamilton-Jacobi method. The behavior of the rate of radiation is plotted for various values of the ultraviolet correction parameter and the cosmological constant. The results show that, owing to the ultraviolet correction and the presence of dark energy represented by the cosmological constant, the black hole radiates at a slower rate in comparison to the case without ultraviolet correction or cosmological constant. Moreover, the presence of the cosmological constant makes the effect of the ultraviolet correction on the black hole radiation negligible.
description: 8 pages, 3 figures. arXiv admin note: text overlap with arXiv:0808.1735 by other authors
H08 (v.bio1)
Creators: name: AI Zhipin
name: Hanasaki Naota
name: Heck Vera
name: Hasegawa Tomoko
name: Fujimori Shinichiro
Publisher: name: Zenodo
Year: 2019

description: This is the source code of H08 (v.bio1). A manual on how to use the model is available https://h08.nies.go.jp/h08/files/USERen_20160101.pdf. In addition, a video on how to use the model is available https://www.youtube.com/watch?v=XBHh_dkcsTg&list=PLi2dwgbJDZ5SqgPJaPlI1KQmOli4v0JiV
Effect of Degradation Factors on Solar Module Encapsulant Materials
Creators: name: Hsieh, H.H.
name: Chen, S.H.
name: Yang, W.L.
name: Lai, C.C.
name: Kuan, M.T.
name: Liu, Y.C.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
Materials for PV Modules, Durability, Reliability and Accelerated Testing Methods

description: 8th World Conference on Photovoltaic Energy Conversion; 890-892
description: Solar encapsulant material is considered to be used in PV module for its high chemical stability and optical performance. And Ethylene Vinyl Acetate (EVA) has been widely used in c-Si solar module in the past decades. However, reviewing the literature, PV degradation concerning the encapsulant materials is around 25 %, which is higher than the other module components. To approach its performance and reliability, the accelerated aging tests such as UV exposure, humidity, and thermal variation. In this research, a cyclic UV exposure/Thermal cycling test/Humidity Freeze sequential aging test cited from IEC 61215 is proposed to observe the power degradation in each step. According to the test results, it is detected that most encapsulant materials can sustain four aging cycles with a power loss less than 5 %. To study the variation in power, it is noted that a higher power drop during humidity freeze test (generally > 0.5 %), while a slight recovery in UV exposure. Humidity freeze test is a testing condition of high temperature (85 ºC) and humidity (85 % RH), and the following UV test is an exposure chamber at 60 ºC. Thus, it is suggested that the key factors degrading EVA are humidity and temperature (Humidity freeze testing condition), yet UV exposure is supposed to evaporate the humidity from module.
Study of Abrasion Resistance of Structured Glass
Creators: name: Pinto, C.L.
name: Zugasti, E.
name: Bengoechea, J.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
Materials for PV Modules, Durability, Reliability and Accelerated Testing Methods

description: 8th World Conference on Photovoltaic Energy Conversion; 874-878
description: In this work, the durability of a novel anti-reflective photovoltaic glass surface is going to be analysed. Subwavelength structures (SWSs) on glass surface have shown an enhanced broadband omnidirectional antireflective property, increasing the transmittance up to values higher than commercial PV glasses with anti-reflective coatings (ARC). Although some research has been done with respect to the anti-reflective and anti-soiling properties of these structured glasses, abrasion resistance measurements is still missing. To this aim, this study demonstrates the durability of these SWSs against dry abrasion. In this respect, abrasion produced by Nylon brushes with and without Arizona Test Dust A2 standard dust has been quantified. The reduction of the anti-reflectance porperty in function of brushing cycles (100, 200, 300 and 500) has been characterized. Additionally, the damage produced to the SWS has been visualized through SEM images.
The Master Equation for Two-Level Accelerated Systems at Finite Temperature
Creators: name: Tomazelli, Jeferson
name: Cunha, Renan
Publisher: name: arXiv
Year: 2015
Subjects: subject: Mathematical Physics (math-ph)
subject: Quantum Physics (quant-ph)
subject: FOS: Physical sciences

description: In this work we study the behaviour of two weakly coupled quantum systems, described by a separable density operator; one of them is a single oscillator, representing a microscopic system, while the other is a set of oscillators which perform the role of a \emph{reservoir} in thermal equilibrium. From the Liouville-Von Neumann equation for the reduced density operator, we devise the master equation that governs the evolution of the microscopic system, incorporating the effects of temperature via Thermofield Dynamics formalism by suitably redefining the vacuum of the macroscopic system. As applications, we initially investigate the behaviour of a Fermi oscillator in the presence of a heat bath consisting of a set of Fermi oscillators and that of an atomic two-level system interacting with a scalar radiation field, considered as a \emph{reservoir}, by constructing the corresponding master equation which governs the time evolution of both sub-systems at finite temperature. Finally, we calculate the energy variation rates for the atom and the field, as well as the atomic population levels, both in the inertial case and at constant proper acceleration, considering the two-level system as a prototype of an Unruh detector, for admissible couplings of the radiation field.
description: 19 pages, 3 figures
PV Module Sand Abrasion Testing
Creators: name: Mathiak, G.
name: John, J.J.
name: Sha, N.
name: Alshanquiti, H.
name: Seentakath, A.
name: Gabbadi, P.
name: Kumar, Y.
name: Weston, M.
name: Pomares, L.M.P.
name: Alberts, V.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
Materials for PV Modules, Durability, Reliability and Accelerated Testing Methods

description: 8th World Conference on Photovoltaic Energy Conversion; 879-886
description: An increasing number of PV systems are being installed in deserts with hot-dry climates. Higher module temperatures, ultraviolet radiation, sandstorms and soiling by dust are the main challenges for special module design and module testing. In this work, the abrasion effect of blowing sand on glass samples and PV modules is investigated in the blowing sand test chamber at the MBR Solar Park in Dubai. Currently there is no suitable standardized method for testing the abrasion resistance of PV modules and solar glass under sandstorm conditions. Qualification testing of PV modules for arid climate conditions must include a sand abrasion test and a dry-cleaning resistance test. Blowing sand tests were performed in a wind tunnel chamber according to IEC 60068-2-68Lc2, using different PV modules and glass samples with different coatings. The air temperature can be adjusted up to 70°C and wind speeds from 18 m/s to 30 m/s can be set. The sand concentration of 2.2 g/m³ is used for most PV module tests. The typical test duration for PV applications is 2 hours with normal exposure to the module vulnerable areas. Coaxial microscopy, short-circuit current, and reflectance measurements were used to characterize PV modules with and without anti-reflective coating as well as glass samples before and after the sand abrasion tests.
Zur Deutung gegenwärtiger Erfahrungen des Leidens und des Bösen
Creators: name: Oelmüller, Willi
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 11 Nr. 3 (1975): Concilium: Internationale Zeitschrift für Theologie, Band 11, Heft 3
Interdisziplinäre diagnostische und psychohygienische Perspektiven bei Fällen von "dämonischer Besessenheit"
Creators: name: Mischo, Johannes
Publisher: name: Concilium
Year: 1970

description: Concilium, Bd. 11 Nr. 3 (1975): Concilium: Internationale Zeitschrift für Theologie, Band 11, Heft 3
Horizontal Single Axis Tracker in Weathering Steel, a Solution with a Low Impact on the LCOE and LCA Index
Creators: name: Demofonti, G.
name: Ricci, A.
name: La Mura, A.
name: Timidei, A.
name: Mercurio, A.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
Balance of System Components

description: 8th World Conference on Photovoltaic Energy Conversion; 859-864
description: Specific aim of the research activity described in this paper was to improve the existing know-how and to generate new knowledge in the design of Horizontal Single Axis Tracker (in a 2P configuration) made in Weathering Steel for bifacial PV panels. Solar Trackers should be characterized in giving a relevant contribution to reduce to both the Levelized Cost of Energy (LCOE) and the Life Cycle Assessment (LCA) of large PV plants. Specific research actions have been carried out focused on: The use of Weathering Steel for solar tracker fabrication, as a cheaper steel-coating solution to be used in aggressive corrosive environment (both air and soil). The experimental evaluation of wind loads to take into account for solar tracker design, in order to assure a safe and economical design of the structure. The Wireless Control & Powering Systems integrated to new generation of monitoring SCADA A.I., in order to reduce cables and time for commissioning and, at the same time, assure a high reliability of the monitoring. All the research activities have been supported by an integrated experimental and analytical approach, characterized by a large scale experimental tests program performed on full scale mock-up. This activity presented has been carried out in the framework of a European project H2020, GOPV (Global Optimization of integrated PhotoVoltaic system for low electricity cost).
Life Expectancy of PV Inverters and Optimizers in Residential PV Systems
Creators: name: Bucher, C.
name: Wandel, J.
name: Joss, D.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
Balance of System Components

description: 8th World Conference on Photovoltaic Energy Conversion; 865-873
description: The average Time To Failure (TTF) of PV inverters and PV optimizers is investigated in this paper. The focus is on residential and small commercial systems. The data used in this paper includes 1195 PV systems consisting of 2121 inverters and 8542 optimizers. The data is obtained by means of an online survey sent to the system operators (343 systems) and by analysing system service databases of professional PV system installers and operators (852 systems). Since most of the systems examined are still in operation and have never failed so far, the results are presented using Kaplan-Meier survival curves. After 15 years, 34.3 percent of inverters show a first failure. The most important factors influencing the TTF are the installation location of the inverter (indoor installations have a lower TTF than outdoor installations), the manufacturer and the inverter topology (installations with optimizers have a lower TTF than installations without optimizers).
Interconnection Technology in PV Modules: Impact of Ribbons, Tab Connectors and Electrically Conductive Backsheet on Module Performance
Creators: name: Tummalieh, A.
name: Paritala, B.
name: Mittag, M.
name: Neuhaus, D.H.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
PV Module Design and Manufacturing

description: 8th World Conference on Photovoltaic Energy Conversion; 842-846
description: The interconnection technology is one of the aspects that is being continuously researched and developed in photovoltaic (PV) modules [1–4]. The aim of this study is to analyze the impact of the used interconnection technology in the PV module such as ribbons, tab connectors and electrically conductive backsheet (ECB) on cell-tomodule (CTM) power losses [5, 6]. To that end, we adapt and develop analytical models that consider the geometry of the contact metallization of the solar cell as well as the geometry and properties of the interconnector being it rectangular ribbon, round ribbon, tab connector or ECB. The study considers different loss and gain channels of the CTM analysis such as power loss due to solar cell’s active area shading and ohmic resistance of the interconnection. Simulation results show a maximum PV module power improvement of about 4% by using back contact solar cells interconnected using ECB compared to PV modules with solar cells interconnected using conventional rectangular ribbons. PV module with tab connectors exhibit a power improvement of about 3.4% compared to conventional cell interconnectors. That is a result of clearly less power loss due to ohmic resistance of the tab connectors, because of shorter current path as well as because of the larger cross section area of the current path using ECB. Furthermore, PV modules with back contact solar cells exhibit no loss due to shading of the interconnectors, because of the position of all contact pads on the backside of the solar cell compared to about 6 W power loss in case of rectangular ribbons. CTM analysis shows that the PV module with round ribbons exhibit about 3.6 W power gain due to light coupling by interconnectors compared to 1.5 W for the PV module with rectangular ribbons.
Collective intelligence: aggregation of information from neighbors in a guessing game
Creators: name: Pérez, Toni
name: Zamora, Jordi
name: Eguíluz, Víctor M.
Publisher: name: arXiv
Year: 2016
Subjects: subject: Physics and Society (physics.soc-ph)
subject: Social and Information Networks (cs.SI)
subject: FOS: Physical sciences
subject: FOS: Computer and information sciences

description: Complex systems show the capacity to aggregate information and to display coordinated activity. In the case of social systems the interaction of different individuals leads to the emergence of norms, trends in political positions, opinions, cultural traits, and even scientific progress. Examples of collective behavior can be observed in activities like the Wikipedia and Linux, where individuals aggregate their knowledge for the benefit of the community, and citizen science, where the potential of collectives to solve complex problems is exploited. Here, we conducted an online experiment to investigate the performance of a collective when solving a guessing problem in which each actor is endowed with partial information and placed as the nodes of an interaction network. We measure the performance of the collective in terms of the temporal evolution of the accuracy, finding no statistical difference in the performance for two classes of networks, regular lattices and random networks. We also determine that a Bayesian description captures the behavior pattern the individuals follow in aggregating information from neighbors to make decisions. In comparison with other simple decision models, the strategy followed by the players reveals a suboptimal performance of the collective. Our contribution provides the basis for the micro-macro connection between individual based descriptions and collective phenomena.
description: 9 pages, 9 figures
Lightweight PV Modules Compatible with One Step Lamination Process
Creators: name: Buceta, A.
name: Aguirre, M.
name: Cueli, A.B.
name: Ezquer Mayo, M.
name: Llarena, E.
name: Cal Ramirez, S.
name: Linares, A.
name: Castelo Mato, R.
name: Bengoechea, J.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
PV Module Design and Manufacturing

description: 8th World Conference on Photovoltaic Energy Conversion; 847-850
description: Lab scale PV module designs, aiming to obtain lightweight solutions, produced in a conventional lamination process and capable of withstanding the impact of hail were studied. To reach this goal, a polypropylene (PP) HoneyComb (HC) with non-woven polyester skin as backsheet with ethylene tetrafluoroethylene (ETFE) or a thin glass (1 mm thick) as frontsheet were used. For this study two different samples of polypropylene HC were tested. The first challenge was adapting the lamination recipe for the HC, since the conventional one caused crushing of the material, especially at the edges. The solution, in order to be able to use one step lamination process, was to use an auxiliary frame to protect the HC during the lamination. Depending on the type of honeycomb the reduction of the pressure was also needed. The samples with ETFE as frontsheet did not resist the hail impact without breaking the solar cell (SC), even if the HC was reinforced. On the other hand, using 1 mm thick glass as frontsheet proved to meet the pass criteria. The preliminary results of temperature and humidity resistance showed that there is some humidity permeability that disappeared after a few days out of the climatic chamber. Even though, the performance was not jeopardized by it.
MINI-CURSO: REPOSITÓRIO DE DADOS DE PESQUISA NA ENFERMAGEM: IMPACTO NA EDUCAÇÃO EM SAÚDE
Creators: name: dos Santos, Marcia  Rodrigues
name: Simone de M, Alencar M
name: Brunoni, Jessica
Publisher: name: Zenodo
Year: 2023
Subjects: dados de pesquisa
repositório de dados
ciência aberta

description: Mini curso sobre repositório de dados de pesquisa voltados para estudantes de graduação em cursos na área de saúde. Trabalho apresentando na 8ª Jornada de Pós Graduação da Universidade Federal do Estado do Rio de Janeiro (UNIRIO) no ano de 2023.
MINI-CURSO: REPOSITÓRIO DE DADOS DE PESQUISA NA ENFERMAGEM: IMPACTO NA EDUCAÇÃO EM SAÚDE
Creators: name: dos Santos, Marcia  Rodrigues
name: Simone de M, Alencar M
Publisher: name: Zenodo
Year: 2024
Subjects: dados de pesquisa
repositório de dados
ciência aberta

description: Mini curso sobre repositório de dados de pesquisa voltados para estudantes de graduação em cursos na área de saúde. Trabalho apresentando na 8ª Jornada de Pós Graduação da Universidade Federal do Estado do Rio de Janeiro (UNIRIO) no ano de 2023.
Performance Analysis of Power Optimizers by Indoor Lab Testing and Shading Simulation
Creators: name: Allenspach, C.
name: Carigiet, F.
name: Bänziger, A.
name: Schneider, A.
name: Baumgartner, F.P.
Publisher: name: WIP
Year: 2022
Subjects: Photovoltaic Modules and BoS Components
Balance of System Components

description: 8th World Conference on Photovoltaic Energy Conversion; 851-858
description: Photovoltaic systems, which are partially shaded, operate with non-uniform conditions within their module array. Power losses are the consequence in conventional systems as they cannot track each photovoltaic modules in their highest individual maximum power point. In contrast, module-level power electronics can potentially improve the performance of shaded systems, while the increase compared to standard string inverter systems is sitespecific. To investigate this, power optimizer and string inverter efficiency measurements were conducted in the ZHAW indoor laboratory. The results were integrated in simulations, with which a module-level power electronics system with power optimizers at every module, and a standard string inverter system was analysed. In detail, the P370 power optimizer and 3500H inverter was used for the power optimizer system and for the standard string inverter setup, the string inverter SUN2000- 3.68KTL-L1, was chosen. The results of the annual simulations with partial shading by a chimney showed a gain of the MLPE system between -0.2% and 0.8% (13-modules), depending on the position of the shading object. Furthermore, the shading adaption efficiency is described, which is a method of quantifying the annual performance for shading situations with weightings to few indoor measured power electronic component efficiencies.
Finding the different patterns in buildings data using bag of words representation with clustering
Creators: name: Habib, Usman
name: Zucker, Gerhard
Publisher: name: arXiv
Year: 2016
Subjects: subject: Artificial Intelligence (cs.AI)
subject: FOS: Computer and information sciences

description: The understanding of the buildings operation has become a challenging task due to the large amount of data recorded in energy efficient buildings. Still, today the experts use visual tools for analyzing the data. In order to make the task realistic, a method has been proposed in this paper to automatically detect the different patterns in buildings. The K Means clustering is used to automatically identify the ON (operational) cycles of the chiller. In the next step the ON cycles are transformed to symbolic representation by using Symbolic Aggregate Approximation (SAX) method. Then the SAX symbols are converted to bag of words representation for hierarchical clustering. Moreover, the proposed technique is applied to real life data of adsorption chiller. Additionally, the results from the proposed method and dynamic time warping (DTW) approach are also discussed and compared.