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Huang, Ji Yuan, Xin Ran Li, Ting Ting Zhou, Fei Ke, Qing Zhang und Wei Jian Liu. „Optimal Capacity Allocation for Supercapacitor Energy Storage System in Power Grid Primary Frequency Regulation“. Advanced Materials Research 1070-1072 (Dezember 2014): 407–17. http://dx.doi.org/10.4028/www.scientific.net/amr.1070-1072.407.
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“Rapid response” features enable supercapacitor energy storage systems (SCESSs), used as auxiliary equipment for primary frequency regulation (PFR), to meet the stability and reliability requirements of power grids. In this application, capacity allocation for SCESSs is studied through theoretical derivation and simulation experiments. Firstly, the application scenarios of SCESSs in PFR are analyzed on the basis of weak grid frequency characteristics. Secondly, in two typical operating modes, namely virtual inertia control and droop control, an integrated operating mode is presented with consideration of the start-stop timing and the output depth of SCESSs, and the relationship between the operating modes and rated powers is derived. Then, to satisfy simulation needs of PFR, an analysis model for SCESSs is built, and a common process of SCESS capacity allocation is summarized. Finally, the optimal rated power, virtual inertia coefficient and droop coefficient of an SCESS is calculated with reference events and frequency control requirements of a weak grid as the benchmark. The results show that aforementioned theory is correct and reasonable, and that the proposed method can achieve optimal frequency regulation effects with a small capacity.
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Boakye, Maxwell, Tyler Ball, Nicholas Dietz, Mayur Sharma, Claudia Angeli, Enrico Rejc, Steven Kirshblum, Gail Forrest, Forest W. Arnold und Susan Harkema. „Spinal cord epidural stimulation for motor and autonomic function recovery after chronic spinal cord injury: A case series and technical note“. Surgical Neurology International 14 (17.03.2023): 87. http://dx.doi.org/10.25259/sni_1074_2022.
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Background: Traumatic spinal cord injury (tSCI) is a debilitating condition, leading to chronic morbidity and mortality. In recent peer-reviewed studies, spinal cord epidural stimulation (scES) enabled voluntary movement and return of over-ground walking in a small number of patients with motor complete SCI. Using the most extensive case series (n = 25) for chronic SCI, the present report describes our motor and cardiovascular and functional outcomes, surgical and training complication rates, quality of life (QOL) improvements, and patient satisfaction results after scES. Methods: This prospective study occurred at the University of Louisville from 2009 to 2020. scES interventions began 2–3 weeks after surgical implantation of the scES device. Perioperative complications were recorded as well as long-term complications during training and device related events. QOL outcomes and patient satisfaction were evaluated using the impairment domains model and a global patient satisfaction scale, respectively. Results: Twenty-five patients (80% male, mean age of 30.9 ± 9.4 years) with chronic motor complete tSCI underwent scES using an epidural paddle electrode and internal pulse generator. The interval from SCI to scES implantation was 5.9 ± 3.4 years. Two participants (8%) developed infections, and three additional patients required washouts (12%). All participants achieved voluntary movement after implantation. A total of 17 research participants (85%) reported that the procedure either met (n = 9) or exceeded (n = 8) their expectations, and 100% would undergo the operation again. Conclusion: scES in this series was safe and achieved numerous benefits on motor and cardiovascular regulation and improved patient-reported QOL in multiple domains, with a high degree of patient satisfaction. The multiple previously unreported benefits beyond improvements in motor function render scES a promising option for improving QOL after motor complete SCI. Further studies may quantify these other benefits and clarify scES’s role in SCI patients.
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Smyth, Steven, Christian Motika, Karsten Rathlev, Reinhard Von Hanxleden und Michael Mendler. „SCEst“. ACM Transactions on Embedded Computing Systems 17, Nr. 2 (26.04.2018): 1–26. http://dx.doi.org/10.1145/3063129.
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Watanabe, Hikari, Yurina Yoshida, Isao Shitanda und Masayuki Itagaki. „Liquid Structure and Anti-Corrosion Effect of Super-Concentrated Electrolyte Solution“. ECS Meeting Abstracts MA2023-02, Nr. 14 (22.12.2023): 1145. http://dx.doi.org/10.1149/ma2023-02141145mtgabs.
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For realizing sustainable world, Lithium-ion batteries are required to have higher energy density. Aluminum metal have been dominantly used as a current collector of positive electrode. A mixture of ethylene carbonate (EC) and dimethyl carbonate (DMC) containing 1 mol dm-3 Lithium hexafluorophosphate (LiPF6) has been used as an electrolyte solution. Aluminum forms thin passivation layer on its surface, preventing the corrosion. However, aluminum corrosion may occur due to this electrolyte solution under high voltage condition. Recently, super-concentrated electrolyte solution (SCES) [1], which consists of only two or three times as much solvent as lithium salt, has been attracting attention as a new electrolyte solution of high-voltage lithium-ion battery. Motsumoto et al. proposed that aluminum corrosion was remarkably suppressed in lithium bis(trifluoromethanesulfonyl)imide (LiTFSI)-based SCES [2]. To clarify the corrosion-inhibiting factor of SCES, we investigated aluminum corrosion in the several lithium salts based SCESs [3]. And we found that lithium perchlorate (LiClO4)-based SCES could suppress corrosion of Aluminum current collector. Liquid structure of the SCES may plays an important role in corrosion suppression. In the present work, we demonstrated Raman spectroscopy and Quantum chemical calculations to reveal the liquid structure of the LiClO4-based SCES. The LiClO4 based SCES was prepared by dissolving LiClO4 into DMC as the molar ratio of 1 : 2. For comparison, DMC solution containing 1 mol dm-3 LiClO4 and neat DMC was also prepared. Raman spectroscopic experiments were conducted using Laser Raman spectrophotometer (NRS-5100, JASCO) installed a laser at 532 nm. Quantum calculations were performed using the Gaussion 9 program suite (Gaussian, USA). Geometry optimization were conducted at the B3LYP/6-311+G(d,p) level. An intensive peak is observed at approximately 915 cm-1 for neat DMC. When a small amount of LiClO4 is added to DMC (corresponding to 1 mol dm-3 LiClO4 solution), new peak is observed at approximately 932 cm-1. This peak can be assigned to ClO4 - anion. A new peak appears at approximately 950 cm-1 with increasing LiClO4 (corresponding to the SCES). According to the Quantum calculations, the new peak is assigned to aggregate in which the ClO4 - cross-links Li+. In addition, HOMO energy of a contact ion pair (CIP), in which ClO4 - coordinates to Li+, is lower than that of free ClO4 - anion. The oxidative stability of ClO4 - increases by forming CIP and aggregate. The decomposition products of ClO4 - may affect the Aluminum corrosion. The high oxidative stability of LiClO4-based SCES may prevent the Aluminum corrosion. References [1] J. Wang, Y. Yamada, K. Sodeyama, C. Chiang, Y. Tateyama, and A. Yamada, Nat. Commun., 7, 1-9, (2016). [2] K. Matsumoto, K. Inoue, K. Nakahara, R. Yuge, T. Noguchi, and K. Utsugi, J. Power Sources, 231, 234-238 (2013)． [3] H. Watanabe, Y. Yoshida, I. Shitanda, M. Itagaki, 242nd ECS Meeting, C04-0785
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Hwang, Jisub, Sangeun Jeon, Min Ju Lee, Wanki Yoo, Juwon Chang, Kyeong Kyu Kim, Jun Hyuck Lee, Hackwon Do und T. Doohun Kim. „Identification, Characterization, and Preliminary X-ray Diffraction Analysis of a Novel Esterase (ScEst) from Staphylococcus chromogenes“. Crystals 12, Nr. 4 (13.04.2022): 546. http://dx.doi.org/10.3390/cryst12040546.
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Ester prodrugs can develop novel antibiotics and have potential therapeutic applications against multiple drug-resistant bacteria. The antimicrobial activity of these prodrugs is activated after being cleaved by the esterases produced by the pathogen. Here, novel esterase ScEst originating from Staphylococcus chromogenes NCTC10530, which causes dairy cow mastitis, was identified, characterized, and analyzed using X-ray crystallography. The gene encoding ScEst was cloned into the pVFT1S vector and overexpressed in E. coli. The recombinant ScEst protein was obtained by affinity and size-exclusion purification. ScEst showed substrate preference for the short chain length of acyl derivatives. It was crystallized in an optimized solution composed of 0.25 M ammonium citrate tribasic (pH 7.0) and 20% PEG 3350 at 296 K. A total of 360 X-ray diffraction images were collected at a 1.66 Å resolution. ScEst crystal belongs to the space group of P212121 with the unit cell parameters of a = 50.23 Å, b = 68.69 Å, c = 71.15 Å, and α = β = γ = 90°. Structure refinement after molecular replacement is under progress. Further biochemical studies will elucidate the hydrolysis mechanism of ScEst. Overall, this study is the first to report the functional characterization of an esterase from Staphylococcus chromogenes, which is potentially useful in elaborating its hydrolysis mechanism.
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Meng, Qian, Jianfeng Ma, Kefei Chen, Yinbin Miao und Tengfei Yang. „Comparable Encryption Scheme over Encrypted Cloud Data in Internet of Everything“. Security and Communication Networks 2017 (2017): 1–11. http://dx.doi.org/10.1155/2017/6430850.
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User authentication has been widely deployed to prevent unauthorized access in the new era of Internet of Everything (IOE). When user passes the legal authentication, he/she can do series of operations in database. We mainly concern issues of data security and comparable queries over ciphertexts in IOE. In traditional database, a Short Comparable Encryption (SCE) scheme has been widely used by authorized users to conduct comparable queries over ciphertexts, but existing SCE schemes still incur high storage and computational overhead as well as economic burden. In this paper, we first propose a basic Short Comparable Encryption scheme based on sliding window method (SCESW), which can significantly reduce computational and storage burden as well as enhance work efficiency. Unfortunately, as the cloud service provider is a semitrusted third party, public auditing mechanism needs to be furnished to protect data integrity. To further protect data integrity and reduce management overhead, we present an enhanced SCESW scheme based on position-aware Merkle tree, namely, PT-SCESW. Security analysis proves that PT-SCESW and SCESW schemes can guarantee completeness and weak indistinguishability in standard model. Performance evaluation indicates that PT-SCESW scheme is efficient and feasible in practical applications, especially for smarter and smaller computing devices in IOE.
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Liu, Guangchen, Jianwen Hu, Guizhen Tian, Lie Xu und Shengtie Wang. „High Voltage Ride through Control of PMSG-Based Wind Turbine Generation System Using Supercapacitor“. Active and Passive Electronic Components 2019 (02.05.2019): 1–9. http://dx.doi.org/10.1155/2019/3489252.
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Regarding PMSG-based wind turbine generation system, this paper proposes a supercapacitor energy storage unit (SCESU) which is connected in parallel with the DC-link of the back-to-back converter to enhance its high voltage ride through performance. The analysis of the operation and control for the grid-side converter and SCESU are conducted. Based on real time digital simulators (RTDS), a model and a Hardware-in-the-Loop (HiL) platform of PMSG-based wind turbine with SCESU is developed, and the simulation results show that the SCESU absorbs the imbalanced energy and the grid-side converter absorbs inductive reactive power during the period of voltage swell and verify the correctness and feasibility of the high voltage ride through control strategy.
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Fan, Guopeng, Honglin Liu, Chaochao Liu, Yanhua Xue, Zihao Ju, Sha Ding, Yuling Zhang und Yuanbo Li. „Analysis of the Influence of Waste Seashell as Modified Materials on Asphalt Pavement Performance“. Materials 15, Nr. 19 (30.09.2022): 6788. http://dx.doi.org/10.3390/ma15196788.
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An increasing amount of waste seashells in China has caused serious environmental pollution and resource waste. This paper aims to solve these problems by using waste seashells as modified materials to prepare high-performance modified asphalt. In this study, seashell powder (SP) and stratum corneum-exfoliated seashell powder (SCESP) were adopted to prepare 10%, 20% and 30% of seashell powder-modified asphalt (SPMA) and stratum corneum-exfoliated seashell powder-modified asphalt (SCESPMA) by the high-speed shear apparatus, respectively. The appearance and composition of two kinds of SPs were observed and determined by the scanning electron microscope (SEM). The types of functional groups, temperature frequency characteristics, low temperature performance and adhesion of SPMA were tested by the Fourier-transform infrared (FTIR) spectrometer, dynamic shear rheometer (DSR), bending beam rheometer (BBR) and contact angle meter. The results show that the SP and SCESP are rough and porous, and their main component is CaCO3, which is physically miscible to asphalt. When the loading frequency ranges from 0.1 Hz to 10 Hz, the complex shear modulus (G*) and phase angle (δ) of SPMA and SCESPMA increase and decrease, respectively. At the same load frequency, SCESPMA has a larger G* and a smaller δ than SPMA. At the same temperature, SCESPMA has a larger rutting factor (G*/sin δ) and better high-temperature deformation resistance than SPMA. SP and SCESP reduce the low-temperature cracking resistance of asphalt, of which SCESP has a more adverse effect on the low-temperature performance of asphalt than SP. When SP and SCESP are mixed with asphalt, the cohesion work (Waa), adhesion work (Was) and comprehensive evaluation parameters of water stability (ER1, ER2 and ER3) of asphalt are improved. It is shown that both SP and SCESP have good water damage resistance, of which SCESP has better water damage resistance than SP. These research results have important reference value for the application of waste biological materials in asphalt pavement.
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Nagel, Lisa, und Lise Hovik. „Presentation: The SceSam Project: Interactivity in Children´s Theatre“. BUKS - Tidsskrift for Børne- & Ungdomskultur 33, Nr. 61 (15.04.2016): 13. http://dx.doi.org/10.7146/buks.v33i61.23446.
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SceSam is an artistic research project (2012-15) in which we have examined interactivity in performances for children (age 3-9) through theory and practice (Nagel and Hovik 2015). Organized as a team of researchers in a research group, practitioners and theoreticians have explored the complex landscape of interactive theatre for children through performances, in seminars, in workshops and in articles. Together with mentors from SceSam, four different artist/companies have developed their own interactive performances, researching different aspects of the performers´ relationships with the child audiences in workshops. Lisa Nagel is the artistic leader of the project, which she has developed together with fellow researcher Lise Hovik and producer Hege Knarvik Sande.
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Shruti, Shruti, Prabhat Kumar Singh und Anurag Ohri. „Evaluating the Environmental Sustainability of Smart Cities in India: The Design and Application of the Indian Smart City Environmental Sustainability Index“. Sustainability 13, Nr. 1 (31.12.2020): 327. http://dx.doi.org/10.3390/su13010327.
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There is a growing consensus that the initiatives taken under the Smart Cities Mission (SCM) in India should be used as an opportunity to prepare models for Environmentally Sustainable Smart Cities (ESSC). While developed countries have earlier worked towards Sustainable Cities and now are moving towards Smart Sustainable Cities, the conditions in developing countries are different. In their current form, SCM guidelines appear to emphasize more on social and economic development along with governance issues using modern tools of information and communication technology (ICT). To ensure environmental sustainability of such large-scale development planning, after a two-stage screening process, 24 environmental indicators have been finalized (including 11 from the existing guidelines), which can be used to monitor various environmentally sustainable elements of smart cities. Accordingly, in the present study; a tentative framework has been developed using these indicators to arrive at a Smart City Environmental Sustainability Index (SCESI) on a 0–100 increasing scale, and the city’s environmental sustainability has been classified under five categories: Excellent; Good; Fair; Poor or Critically Low; based on decreasing SCESI. Using this framework, five Indian cities, which are currently being developed under SCM (Delhi; Patna; Allahabad; Varanasi; and Bhubaneswar), have been examined. The analyses indicate that while three of them (Delhi, Allahabad, and Bhubaneswar) are found in the Fair (SCESI = 40–60) category of environmental sustainability, two (Varanasi and Patna) are in the Poor (SCESI = 20–40) category. The SCESI developed may be used as a monitoring and diagnostic tool for planning and managing services connected with the environment surrounding human life.
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Al-Juboory, H. H., und A. K. Al-Kubaisei. „Morphologically and Molecularly Identification of the Fungus that Causes White Mold Disease on Eggplant and Cucumber“. IOP Conference Series: Earth and Environmental Science 1252, Nr. 1 (01.12.2023): 012008. http://dx.doi.org/10.1088/1755-1315/1252/1/012008.
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Abstract This study aimed to isolate the causal agent of white mold on eggplant caused by the fungus Sclerotinia sclerotiorum, and it was examined microscopically and molecularly. The pathogenicity of 16 isolates of the pathogenic fungus was evaluated from soil and plant residues, eggplant and cucumber plants (ScE1– ScE8) and (ScC1 – ScC8), respectively, from fields in different areas of Baghdad governorate of Baghdad (Abi Ghraib/Zidan, Al-Yusufiyah, Mada’in/Tuwaitha and Jadiriyah / University of Baghdad). The results of testing the pathogenicity of isolates of the pathogenic fungus showed that all isolates had a significant effect in reducing the percentage of seed germination compared to the control treatment in which the germination rate was 100%. The isolate ScE2 isolated from eggplant plants significantly outperformed the rest of the isolates, followed by isolates ScE1, ScC2, ScE3, ScE4, ScE2 and ScE5, followed by the rest of the isolates with a significant effect, the percentage of germination for the rest of the isolates ranged between 20-30%. The identificationof the two most pathogenic isolates was confirmed by PCR technology on eggplant and cucumber based on the ITS1 and ITS4 gene. The two isolates were deposited in (NCBI) under accession numbers MZ424307 and MZ424308.
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Cartwright, Elizabeth J., Margaret H. Dohnalek und W. Stephen Hill. „Lipid Profile and 5α-Reductase Inhibition Activity of Proprietary Ultrahigh-Pressure Supercritical Carbon Dioxide and Hexane Saw Palmetto Extracts“. Uro 3, Nr. 1 (17.01.2023): 27–39. http://dx.doi.org/10.3390/uro3010005.
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Inhibition of 5α-reductase (5αR), which blocks the conversion of testosterone to its active metabolite, dihydrotestosterone, has been shown to impact further prostate enlargement (benign prostatic hyperplasia, or BPH). Clinical trials of standardized lipidosterolic extracts of Serenoa repens (LSESr), also known as standardized extracts of saw palmetto, have demonstrated improvement in lower urinary tract symptoms (LUTS) and delayed progression of BPH. The aim of this preclinical study was to compare two standardized LSESr, a proprietary ultrahigh-pressure supercritical carbon dioxide extract of S. repens (UHP-sCESr) and the well-established hexanic extract of S. repens (HESr), for both 5αR inhibition activity and lipid profiles. UHP-sCESr and HESr had nearly identical inhibition curves and comparable IC50 values for 5αR-1 (9.25 ± 0.87 and 9.86 ± 0.11 μg/mL, respectively; p = 0.43) and 5αR-2 (7.47 ± 0.07 and 7.72 ± 0.05 μg/mL, respectively; p = 0.0544). UHP-sCESr and HESr also had comparable lipid profiles based on similar total fatty acid levels (87.7% and 91.5%, respectively), weight/weight comparisons of individual fatty acids, and individual fatty acid ratios to lauric acid. In addition, UHP-sCESr meets the standard set by the United States Pharmacopeia (USP) monograph for authenticity and purity for a supercritical carbon dioxide (SCCO2) extract of saw palmetto, whereas HESr meets the standard set by the European Medicines Agency (EMA) for a well-established medicinal product. In conclusion, based on enzyme inhibition curves and IC50 values, a standardized lipid profile is important to achieve comparable mechanisms of action for lipidosterolic extracts of saw palmetto. UHP-sCESr offers a comparable, standardized LSESr for men with LUTS/BPH in regions where the proprietary HESr is not available.
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Li, Y. B., J. Y. Wang, Q. C. Wang, B. Shi und J. S. Chen. „RAMS assessment approach of self-consistent energy system in highway service areas“. Journal of Physics: Conference Series 2589, Nr. 1 (01.09.2023): 012034. http://dx.doi.org/10.1088/1742-6596/2589/1/012034.
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Abstract Self-consistent energy system (SCES) that integrates volatile renewable energy, challenges power system operation of highway service areas. How to evaluate its resilience and energy efficiency is a key issue for the entire SCES. In this paper, we investigate the assessment approach of SCES. Based on the electricity consumption model consisting of different functional sections of SCES in service areas, by deriving the corresponding three-level indicators from the different functional sections, we propose a new SCES assessment approach from four aspects: reliability, availability, maintainability, and safety (RAMS). Simulation results show that the proposed approach can comprehensively and accurately assess the RAMS of SCES, provides data support for improving the resilience and energy efficiency of SCES, and gives a guide for the development of SCES.
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Majithia, Shivani, Yih Chung Tham, Miao Li Chee, Cong Ling Teo, Miao-Ling Chee, Wei Dai, Neelam Kumari et al. „Singapore Chinese Eye Study: key findings from baseline examination and the rationale, methodology of the 6-year follow-up series“. British Journal of Ophthalmology 104, Nr. 5 (10.08.2019): 610–15. http://dx.doi.org/10.1136/bjophthalmol-2019-314760.
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Background/aimsIn order to address the eye care needs of the increasing numbers of elderly Chinese globally, there is a need for comprehensive understanding on the longitudinal trends of age-related eye diseases among Chinese. We herein report the key findings from the baseline Singapore Chinese Eye Study (SCES-1), and describe the rationale and methodology of the 6-year follow-up study (SCES-2).Methods3353 Chinese adults who participated in the baseline SCES-1 (2009–2011) were invited for the 6-year follow-up SCES-2 (2015–2017). Examination procedures for SCES-2 included standardised ocular, systemic examinations and questionnaires identical to SCES-1. SCES-2 further included new examinations such as optical coherence tomography angiography, and questionnaires to evaluate health impact and economic burden of eye diseases.ResultsIn SCES-1, the age-adjusted prevalence of best-corrected low vision (VA<6/12, better-seeing eye) and blindness (VA<6/60, better-seeing eye) were 3.4% and 0.2%, respectively. The prevalence rates for glaucoma, age related macular degeneration, and diabetic retinopathy (among diabetics) were 3.2%, 6.8%, 26.2%, respectively. Of the 3033 eligible individuals from SCES-1, 2661 participated in SCES-2 (response rate=87.7%). Comparing with those who did not attend SCES-2, those attended were younger, had higher SES (all p<0.001), but less likely to be a current smoker, to have diabetes, hypertension, hyperlipidaemia (all p≤0.025).ConclusionsBuilding on SCES-1, SCES-2 will be one of the few longitudinal population-based eye studies to report incidence, progression, and risk factors of major age-related eye diseases. Findings from this cohort may offer new insights, and provide useful reference information for other Chinese populations elsewhere.
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HAO, SHUDONG, YANYAN XU, DENGFENG KE, KAILE SU und HENGLI PENG. „SCESS: a WFSA-based automated simplified chinese essay scoring system with incremental latent semantic analysis“. Natural Language Engineering 22, Nr. 2 (30.10.2014): 291–319. http://dx.doi.org/10.1017/s1351324914000138.
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AbstractWriting in language tests is regarded as an important indicator for assessing language skills of test takers. As Chinese language tests become popular, scoring a large number of essays becomes a heavy and expensive task for the organizers of these tests. In the past several years, some efforts have been made to develop automated simplified Chinese essay scoring systems, reducing both costs and evaluation time. In this paper, we introduce a system called SCESS (automated Simplified Chinese Essay Scoring System) based on Weighted Finite State Automata (WFSA) and using Incremental Latent Semantic Analysis (ILSA) to deal with a large number of essays. First, SCESS uses ann-gram language model to construct a WFSA to perform text pre-processing. At this stage, the system integrates a Confusing-Character Table, a Part-Of-Speech Table, beam search and heuristic search to perform automated word segmentation and correction of essays. Experimental results show that this pre-processing procedure is effective, with a Recall Rate of 88.50%, a Detection Precision of 92.31% and a Correction Precision of 88.46%. After text pre-processing, SCESS uses ILSA to perform automated essay scoring. We have carried out experiments to compare the ILSA method with the traditional LSA method on the corpora of essays from the MHK test (the Chinese proficiency test for minorities). Experimental results indicate that ILSA has a significant advantage over LSA, in terms of both running time and memory usage. Furthermore, experimental results also show that SCESS is quite effective with a scoring performance of 89.50%.
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Wei, Dan, Wei Zhang, Zhi Jie Wang und David Zheng. „Study on Improving Microgrid Transient Power Quality by Super-Capacitor“. Advanced Materials Research 960-961 (Juni 2014): 845–48. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.845.
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Massive applications of the power electronic devices and non-linear loads lead to various power quality problems during the microgrids grid-connecting. Aiming at improving power quality of micro-grid, the structure of SCs’ main circuit and control circuit are designed. The model of super-capacitor energy storage system (SCESS) is established. A simulation model of micro-grid is also built up by using MATLAB and the simulation is conducted for different situations. Moreover, under Goldwind micro-grid platform, according to the result of MATLAB modeling and simulation, the SCESS effectively improves the transient power quality of the system.
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E. Abdellatif, Walid S., Noura A. Nour Aldin, Ahmed M. Azmy und Ahmed A. Salem. „Fault Ride Through Capability Enhancement of Permanent Magnet Synchronous Generator-based Wind Energy Conversion System“. Journal of University of Shanghai for Science and Technology 23, Nr. 09 (24.09.2021): 1135–54. http://dx.doi.org/10.51201/jusst/21/09667.
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With the speedy increase of wind energy in electric networks, many important issues could emerge, where the most important matter is to maintain the connection of wind generators during fault conditions. With different faults in the electrical network, the voltage at the point of common coupling (PCC) decreases causing unwanted transients in the stator currents. This results in substantially increased fluctuations in the DC-link voltage (Vdc). To avoid this negative impact, it is a must to maintain the capability of wind generators to continue linked to the network during faults, which is depicted as low voltage ride through (LVRT) capability. This paper investigates the LVRT enhancement by two techniques, the first is based on Braking Chopper (BC) and the second method is based on electrical double-layer capacitors (EDLC), or Supercapacitor Energy Storage System (SCESS), under abnormal conditions. The full model of the permanent magnet synchronous generator (PMSG) system and FRT technique are performed in MATLAB/Simulink platform. As a consequence of the findings, both the BC and SCESS are capable to provide satisfactory performance with superior FRT capability for the SCESS compared to the BC.
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Othman, Noraini, Mohd Khairuddin Md Arshad, Syarifah Norfaezah Sabki und U. Hashim. „Ultra-Thin Body and Buried Oxide (UTBB) SOI MOSFETs on Suppression of Short-Channel Effects (SCEs): A Review“. Advanced Materials Research 1109 (Juni 2015): 257–61. http://dx.doi.org/10.4028/www.scientific.net/amr.1109.257.
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This paper reviews the different UTBB SOI MOSFET structures and their superiority in suppressing short-channel effects (SCEs). As the gate length (Lg), buried oxide thickness (TBOX) and silicon thickness (Tsi) are scaled down, the severity of SCEs becomes significant. The different UTBB SOI MOSFET device structures introduced to suppress these SCEs are discussed. The effectiveness of these structures in managing the associated SCEs such as drain-induced barrier lowering (DIBL), subthreshold swing (SS) and off-state leakage current (Ioff) is also presented. Further evaluations are made on other competing CMOS technologies such as multigate MOSFETs (FinFETs, three-gates, four-gates) and junctionless transistor in controlling the SCEs.
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Nagel, Lisa, und Lise Hovik. „The SceSam Project—Interactive dramaturgies in performing arts for children“. Youth Theatre Journal 30, Nr. 2 (02.07.2016): 149–70. http://dx.doi.org/10.1080/08929092.2016.1225611.
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Alvarado, Jorge A., Abigail Betanzos, Linda Franse-Carman, Janet Chen und Lorenza González-Mariscal. „Endothelia of Schlemm's canal and trabecular meshwork: distinct molecular, functional, and anatomic features“. American Journal of Physiology-Cell Physiology 286, Nr. 3 (März 2004): C621—C634. http://dx.doi.org/10.1152/ajpcell.00108.2003.
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The purpose of this study was to compare human endothelial cells from Schlemm's canal (SCEs) and the trabecular meshwork (TMEs) in terms of ZO-1 isoform expression, hydraulic conductivity (HC) properties, and “giant” vacuole (GV) formation. The principal study methods were Western blot, RT-PCR, immunofluorescence, and perfusion chambers. Blot signals for α+-and α--isoforms were similar in SCEs but less intense for the α+-relative to the α--signal in TMEs. With the anti-α+ antibody used at 1/50 dilution, binding occurred at cell borders of both cell types, but only to SCEs when used at a ≥1/200 dilution in vitro and in vivo. SCEs were more resistive than TMEs (HC = 0.66 vs. 1.32 μl·min-1·mmHg-1·cm-2; P < 0.001) when perfused from apex to base. When perfused in the other direction, SCEs were again more resistive (5.23 vs. 9.04 μl·min-1·mmHg-1·cm-2; P < 0.01). GV formation occurred only in SCEs as a function of flow direction, perfusion pressure, and time. We conclude that SCEs and TMEs have distinctive phenotypic properties involving their content of ZO-1 isoforms, barrier function, and GV formation.
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Onghena, Patrick, Bart Michiels, Laleh Jamshidi, Mariola Moeyaert und Wim Van den Noortgate. „One by One: Accumulating Evidence by using Meta-Analytical Procedures for Single-Case Experiments“. Brain Impairment 19, Nr. 1 (23.11.2017): 33–58. http://dx.doi.org/10.1017/brimp.2017.25.
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This paper presents a unilevel and multilevel approach for the analysis and meta-analysis of single-case experiments (SCEs). We propose a definition of SCEs and derive the specific features of SCEs’ data that have to be taken into account when analysing and meta-analysing SCEs. We discuss multilevel models of increasing complexity and propose alternative and complementary techniques based on probability combining and randomisation test wrapping. The proposed techniques are demonstrated with real-life data and corresponding R code.
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Joshi, Kundan, Enrico Rejc, Beatrice Ugiliweneza, Susan J. Harkema und Claudia A. Angeli. „Spinal Cord Epidural Stimulation Improves Lower Spine Sitting Posture Following Severe Cervical Spinal Cord Injury“. Bioengineering 10, Nr. 9 (09.09.2023): 1065. http://dx.doi.org/10.3390/bioengineering10091065.
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Cervical spinal cord injury (SCI) leads to impaired trunk motor control, negatively impacting the performance of activities of daily living in the affected individuals. Improved trunk control with better sitting posture has been previously observed due to neuromuscular electrical stimulation and transcutaneous spinal stimulation, while improved postural stability has been observed with spinal cord epidural stimulation (scES). Hence, we studied how trunk-specific scES impacts sitting independence and posture. Fourteen individuals with chronic, severe cervical SCI with an implanted neurostimulator performed a 5-min tall-sit task without and with trunk-specific scES. Spine posture was assessed by placing markers on five spine levels and evaluating vertical spine inclination angles. Duration of trunk manual assistance was used to assess independence along with the number of independence changes and average independence score across those changes. With scES, the sacrum-L1 inclination and number of independence changes tended to decrease by 1.64 ± 3.16° (p = 0.07; Cohen’s d = 0.53) and 9.86 ± 16.8 (p = 0.047; Cohen’s d = 0.59), respectively. Additionally, for the participants who had poor sitting independence without scES, level of independence tended to increase by 12.91% [0%, 31.52%] (p = 0.38; Cohen’s d = 0.96) when scES was present. Hence, trunk-specific scES promoted improvements in lower spine posture and lower levels of trunk assistance.
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Bakery, Awad A., und Mustafa M. Mohammed. „Small Pre-Quasi Banach Operator Ideals of Type Orlicz-Cesáro Mean Sequence Spaces“. Journal of Function Spaces 2019 (02.05.2019): 1–9. http://dx.doi.org/10.1155/2019/7265010.
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In this paper, we give the sufficient conditions on Orlicz-Cesáro mean sequence spaces cesφ, where φ is an Orlicz function such that the class Scesφ of all bounded linear operators between arbitrary Banach spaces with its sequence of s-numbers which belong to cesφ forms an operator ideal. The completeness and denseness of its ideal components are specified and Scesφ constructs a pre-quasi Banach operator ideal. Some inclusion relations between the pre-quasi operator ideals and the inclusion relations for their duals are explained. Moreover, we have presented the sufficient conditions on cesφ such that the pre-quasi Banach operator ideal generated by approximation number is small. The above results coincide with that known for cesp (1<p<∞).
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Hendriks, Erik, Maria Koelen, Kirsten Verkooijen, Jan Hassink und Lenneke Vaandrager. „The Health Impact of Social Community Enterprises in Vulnerable Neighborhoods: Protocol for a Mixed Methods Study“. JMIR Research Protocols 11, Nr. 6 (22.06.2022): e37966. http://dx.doi.org/10.2196/37966.
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Background This 4-year research project focuses on 6 social community enterprises (SCEs) that operate in 5 neighborhoods in a Dutch city. Residents of these neighborhoods face problems such as poor average levels of physical and mental health, high unemployment rates, and weak social cohesion. SCEs offer residents social, cultural, and work-related activities and are therefore believed to help these persons develop themselves and strengthen the social ties in the community. Because of a lack of empirical evidence; however, it is unclear whether and how SCEs benefit the health and well-being of participants. Objective This paper outlines a protocol for an evaluation study on the impact of SCEs, aiming to determine (1) to what extent SCEs affect health and well-being of participating residents, (2) what underlying processes and mechanisms can explain such impact, and (3) what assets are available to SCEs and how they can successfully mobilize these assets. Methods A mixed methods multiple-case study design including repeated measurements will be conducted. Six SCEs form the cases. An integrated model of SCE health intervention will be used as the theoretical basis. First, the impact of SCEs is measured on the individual and community level, using questionnaires and in-depth interviews conducted with participants. Second, the research focuses on the underlying processes and mechanisms and the organizational and sociopolitical factors that influence the success or failure of these enterprises in affecting the health and well-being of residents. At this organizational level, in-depth interviews are completed with SCE initiators and stakeholders, such as municipal district managers. Finally, structurally documented observations are made on the organizational and sociopolitical context of the SCEs. Results This research project received funding from the Netherlands Organization for Health Research and Development in 2018. Data collection takes place from 2018 until 2022. Data analysis starts after the last round of data collection in 2022 and finalizes in 2024. Expected results will be published in 2023 and 2024. Conclusions Despite the societal relevance of SCEs, little empirical research has been performed on their functioning and impact. This research applies a variety of methods and includes the perspectives of multiple stakeholders aiming to generate new empirical evidence. The results will enable us to describe how SCE activities influence intermediate and long-term health outcomes and how the organizational and sociopolitical context of SCEs may shape opportunities or barriers for health promotion. As the number of these initiatives in the Netherlands is increasing rapidly, this research can benefit many SCEs attempting to become more effective and increase their impact. The findings of this research will be shared directly with relevant stakeholders through local and national meetings and annual reports and disseminated among other researchers through scientific publications. International Registered Report Identifier (IRRID) DERR1-10.2196/37966
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Afzal, Muhammad Moin, Muhammad Adil Khan, Muhammad Arshad Shehzad Hassan, Abdul Wadood, Waqar Uddin, S. Hussain und Sang Bong Rhee. „A Comparative Study of Supercapacitor-Based STATCOM in a Grid-Connected Photovoltaic System for Regulating Power Quality Issues“. Sustainability 12, Nr. 17 (21.08.2020): 6781. http://dx.doi.org/10.3390/su12176781.
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Renewable energy resources (RERs) play a vital role in reducing greenhouse gases, as well as balancing the power generation demand in daily life. Due to the high penetration of RERs and non-linear loads into utility power systems, various power quality issues arise, i.e., voltage drop, harmonic distortion, reactive power demand, etc. In order to handle these power quality issues, there is a need for smart flexible alternating current transmission system (FACTS) devices. In this paper, a super capacitor energy storage system (SCESS)-based static synchronous compensator (STATCOM) is designed in order for the grid-connected photovoltaic (PV) system to overcome the abovementioned power quality issues. A voltage controller and a d-q axis controller are used for the efficient performance of the STATCOM. In order to show the superiority of the supercapacitor, a detailed comparison is made between a battery energy storage system (BESS)-based STATCOM and a SCESS-based STATCOM. Four scenarios are studied to evaluate the performance of the proposed STATCOM design. The proposed SCESS-based STATCOM not only boosts the voltage but also stabilizes it from 368 V to 385 V (Ph-Phrms). The simulated results have confirmed that the proposed design is not only superior to a BESS-based STATCOM but also has the capability to overcome the power quality issues as well.
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Coleman, Piers. „Theory perspective: SCES 2016“. Philosophical Magazine 97, Nr. 36 (21.09.2016): 3527–43. http://dx.doi.org/10.1080/14786435.2016.1232866.
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Liu, Zhen-Tao, Hui-Ting Wang, Dan-Yun Li, Hao Zhou und Zi-Han Zhou. „A Novel Micro-Pressure Power Generation System Based on Super Capacitor Energy Storage and PI Controller“. Journal of Advanced Computational Intelligence and Intelligent Informatics 20, Nr. 7 (20.12.2016): 1051–59. http://dx.doi.org/10.20965/jaciii.2016.p1051.
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A novel micro-pressure power generation system (PPG) is proposed. It mainly consists of two parts: a piezoelectric ceramic power generation device and a super capacitor energy storage module (SCESM). The SCESM is composed of a conditioning circuit and a control circuit. The control circuit has a proportional-integral (PI) controller to smooth the voltage output with pulse-width modulation. The PPG system can generate power and conserve energy as well as support renewable and low-power energy. The superiority of the PPG system is verified through simulation and actual experiments. The process of storing energy takes 572 seconds, and the maximum error of the voltage output is 5%. In future research, we will be studying conversion efficiency optimization for the proposed system, an embedded power supply for wearable devices.
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Pagliuso, Pascoal J. G., Cris Adriano und Eduardo Miranda. „The 2020 Strongly Correlated Electron Systems Conference“. Journal of Physics: Conference Series 2164, Nr. 1 (01.03.2022): 011001. http://dx.doi.org/10.1088/1742-6596/2164/1/011001.
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The International Conference on Strongly Correlated Electrons systems (SCES) is one of the most traditional conferences in Condensed Matter Physics worldwide. SCES continues to bring together, in every edition, outstanding scientists working in the frontiers of the complex and advanced phenomena of this area. The SCES 2020 Edition was planned to be an in-person event in Guaruja, SP, Brazil in September of 2020 as a continuation of the successful series of the SCES conferences: Sendai (’92), San Diego (’93), Amsterdam (’94), Goa (’95), Zurich (’96), Paris (’98), Nagano (’99), Ann Arbor (’01), Krakow (’02), Karlsruhe (’04), Vienna (’05), Houston (’07), Buzios (’08), Santa Fe (’10), Cambridge (’11), Tokyo (’13), Grenoble (’14), Hangzhou (’16), Prague (’17) and Okayama (’19). Additionally, every three years since 1997, SCES has been joining the International Conference on Magnetism (ICM) held in: Cairns (’97), Recife (’00), Rome (’03), Kyoto (’06), Karlsruhe (’09), Busan (’12), Barcelona (’15), and San Francisco (’18). List of The international advisory committee, The prize committee, The publication Committee, The organizing committee, The local committee are available in this pdf.
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Rupa, D. S., P. P. Reddy und O. S. Reddi. „Cytogeneticity of Quinalphos and Methyl Parathion in Human Peripheral Lymphocytes“. Human & Experimental Toxicology 9, Nr. 6 (November 1990): 385–87. http://dx.doi.org/10.1177/096032719000900605.
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1 Four different concentrations of quinalphos and methyl parathion were tested on human peripheral lymphocytes over different time periods, for the analysis of chromosomal aberrations and sister chromatid exchanges (SCEs). 2 A significant increase in chromosomal aberrations was observed when cells were treated with quinalphos for 48 and 72 h and a significant increase in SCEs was observed at all the concentrations and over all the time periods. 3 Methyl-parathion did not induce chromosomal aberrations but it did induce SCEs significantly over all time periods.
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Papageorgiou, Pavlos, Konstantinos Oureilidis, Anna Tsakiri und Georgios Christoforidis. „A Modified Decentralized Droop Control Method to Eliminate Battery Short-Term Operation in a Hybrid Supercapacitor/Battery Energy Storage System“. Energies 16, Nr. 6 (20.03.2023): 2858. http://dx.doi.org/10.3390/en16062858.
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Employment of a battery energy storage system to compensate for the generation-consumption mismatch is a vital element for a resilient microgrid. However, the frequent (i.e., short-term) cyclic activity and the abrupt current variations (i.e., high di/dt) have adverse effects on the energy-type battery’s lifespan. On the other hand, the power-type supercapacitor energy storage system (SCES) has almost zero lifetime degradation when it is subjected to irregular charging/discharging patterns. Therefore, the hybridization between them can reduce battery stress levels. This study proposes a droop control algorithm with multiple segments for a SCES/battery hybrid energy storage system (HESS) that is employed in a solar/wind DC microgrid. The presented control scheme is decentralized since it avoids the central controller (CC) and the communication links between the controllers of SCES and battery units. To eliminate the short-term cyclic operation of the battery, the SCES regulates the bus voltage inside a narrow zone with a droop curve that exploits all its available energy capacity. Inside this zone, the battery is kept inactive. As soon as the bus voltage deviates from this band, the SCES enters the idle mode, and the battery is triggered following a droop curve different for charging or discharging mode to stabilize the bus voltage. To evaluate the effectiveness of the proposed system over a battery-only system and a hybrid SCES/battery system controlled with the classical droop method, a comparative analysis under different scenarios is presented.
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Kubryakov, Arseny, Anna Aleskerova, Evgeniy Plotnikov, Artem Mizyuk, Alesya Medvedeva und Sergey Stanichny. „Accumulation and Cross-Shelf Transport of Coastal Waters by Submesoscale Cyclones in the Black Sea“. Remote Sensing 15, Nr. 18 (06.09.2023): 4386. http://dx.doi.org/10.3390/rs15184386.
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High- and medium-resolution satellite optical imagery show that submesoscale cyclonic eddies (SCEs) trap coastal waters and induce their rapid cross-shelf transport. Due to the presence of a rigid boundary, the convergence is observed in the coastal part of SCEs. It causes accumulation of suspended matter, which spins inward in a spiral motion toward the SCE core. Small SCEs with a radius of 1–10 km transport waters with local anomalies in the concentration of chlorophyll, total suspended matter and temperature to a distance of up to 150 km and are observed for more than 10 days. Lagrangian calculations based on realistic NEMO numerical model are used to estimate the fate of the coastal waters in such SCEs. The eddy entrains the largest number of particles during its separation from the coast when its vorticity reaches the maximum. Then, the SCE weakens, which is accompanied by the flattening of initially risen isopycnals and deepening of the trapped coastal waters. The described mechanism shows that coastal SCEs may cause intense short-period cross-shelf transport of the biological and chemical characteristics, and is another process affecting the functioning of the marine ecosystems.
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Rajput, Amit, und Jagdeep Lather. „Energy management and dc bus voltage stabilization in a HRES based DC microgrid using HESS“. Serbian Journal of Electrical Engineering 20, Nr. 2 (2023): 243–68. http://dx.doi.org/10.2298/sjee2302243r.
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This paper proposes a control strategy with stability analysis for a hybrid energy storage system (HESS) in a DC microgrid (DCMG) consisting of hybrid renewable energy sources (HRESs). The proposed control strategy effectively regulates DC bus voltage (DBV), maintains a balance in demand-generation and improves the power quality by flattening the intermittency in PV generation. The proposed configuration harnesses the advantage of both battery energy storage system (BESS) and supercapacitor (SC) energy storage system (SCESS) in the HESS through their effective utilization as per their power and energy densities. A filtration-based control (FBC) has been proposed using PI controllers to generate the reference signals as per inherent internal characteristics of BESS and SCESS. The efficacy of the proposed configuration is analyzed through simulations using Simscape? module of MATLAB? software. The results are further validated using the FPGA-based real-time simulator Opal-RT.
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Yin, Zhicong, und Huijun Wang. „The strengthening relationship between Eurasian snow cover and December haze days in central North China after the mid-1990s“. Atmospheric Chemistry and Physics 18, Nr. 7 (09.04.2018): 4753–63. http://dx.doi.org/10.5194/acp-18-4753-2018.
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Abstract. The haze pollution in December has become increasingly serious over recent decades and imposes damage on society, ecosystems, and human health. In addition to anthropogenic emissions, climate change and variability were conducive to haze in China. In this study, the relationship between the snow cover over eastern Europe and western Siberia (SCES) and the number of haze days in December in central North China was analyzed. This relationship significantly strengthened after the mid-1990s, which is attributed to the effective connections between the SCES and the Eurasian atmospheric circulations. During 1998–2016, the SCES significantly influenced the soil moisture and land surface radiation, and then the combined underlying drivers of enhanced soil moisture and radiative cooling moved the the East Asia jet stream northward and induced anomalous, anti-cyclonic circulation over central North China. Modulated by such atmospheric circulations, the local lower boundary layer, the decreased surface wind, and the more humid air were conducive to the worsening dispersion conditions and frequent haze occurrences. In contrast, from 1979 to 1997, the linkage between the SCES and soil moisture was negligible. Furthermore, the correlated radiative cooling was distributed narrowly and far from the key area of snow cover. The associated atmospheric circulations with the SCES were not significantly linked with the ventilation conditions over central North China. Consequently, the relationship between the SCES and the number of hazy days in central North China was insignificant before the mid-1990s but has strengthened and has become significant since then.
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Vladimír, Goněc. „Evropské paralely pro scestí a selhání federalistického myšlení v prostoru bývalého Československa“. Česko-slovenská historická ročenka 24, Nr. 1 (2022): 91–106. http://dx.doi.org/10.5817/cshr.2022.24.1.4.
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This paper is based on Constantin Frantz’s concept of a true “federation for citizens”. Frantz’s concept has been misunderstood and neglected by a large part of the persons involved in constitutional thinking in the mid 19th century Bohemia and Upper Hungary, that is, the territories of today’s Czech and Slovak Republics. The result of that neglect and misunderstanding was delusion. The Czech Faculty of Law at Charles University in Prague became a stronghold of dogmatic centralist thinking; it found itself in conflict with other university faculties in interwar Czechoslovakia. With the take over of the Communist Party in February 1948, critical federalist thinking vanished, as a result of government domestic policy. After August 1968, critical federalist thinking as a concept of federation ceased to exist, since the concept ‘federation’ was bereft of its true sense. This resulted in the painful lack of understanding of the inherent problems of federalism and decentralisation in the early 1990s.
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Watanabe, Hikari, Yurina Yoshida, Isao Shitanda und Masayuki Itagaki. „Study on Aluminum Corrosion in Lithium Perchlorate-Based Super-Concentrated Electrolyte Solution“. ECS Meeting Abstracts MA2022-02, Nr. 13 (09.10.2022): 785. http://dx.doi.org/10.1149/ma2022-0213785mtgabs.
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For realizing sustainable world, Lithium-ion batteries are required to have higher energy density. Aluminum metal have been dominantly used as a current collector of positive electrode. A mixture of ethylene carbonate (EC) and dimethyl carbonate (DMC) containing 1 mol dm-3 Lithium hexafluorophosphate (LiPF6) has been used as an electrolyte solution, however, aluminum corrosion may occur due to this electrolyte solution under high voltage condition. On the other hand, super-concentrated electrolyte solution (SCES), which consists of only two or three times as much solvent as lithium salt, has been attracting attention as a new electrolyte solution of Lithium-ion battery. Motsumoto et al. proposed that aluminum corrosion was remarkably suppressed in lithium bis(trifluoromethanesulfonyl)imide (LiTFSI)-based SCES. However, the electrolyte solution containing fluorine has the problem which is the dissolution of the active material due to the decomposition product of the electrolyte solution．In the present work, we investigated aluminum corrosion in the lithium perchlorate (LiClO4)-based SCES as a fluorine-free solution. The LiClO4 based SCES was prepared by dissolving LiClO4 into DMC as the molar ratio of 1 : 2. For comparison, DMC solution containing 1 mol dm-3 LiClO4 was also prepared. Linear sweep voltammetry (LSV) and electrochemical impedance spectroscopy (EIS) were measured. X-ray photospectroscopy (XPS) was performed to evaluate the decomposition product on the aluminum electrode. Anodic current of the dilute electrolyte solution is observed at 3.9 V vs. Li/Li+. By contrast, in the LiClO4 based SCES, the anodic current is less than 100 µA cm-2 when polarized to 6 V vs. Li/Li+. In the dilute electrolyte solution, the ClO4 - anion is decomposed to form Cl-, which promotes aluminum corrosion. By contrast, the SCES has high oxidative stability, suggesting that the liquid structure of the SCES differ from that of the dilute electrolyte solution. two intense peaks appear at 196 and 198 eV in in XPS spectra of Cl 2p for the aluminum surface after LSV measurement in the dilute electrolyte solution. On the other hand, a weak peak is observed at approximately 199 eV in XPS spectra of Cl 2p for the aluminum surface after LSV measurement in the SCES. This result suggests that the ClO4 - anion is not decomposed in the SCES. References [1] K. Matsumoto, K. Inoue, K. Nakahara, R. Yuge, T. Noguchi, and K. Utsugi, J. Power Sources, 231, 234-238 (2013)． [2] J. Wang, Y. Yamada, K. Sodeyama, C. Chiang, Y. Tateyama, and A. Yamada, Nat. Commun., 7, 1-9, (2016).
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Aihara, M., A. Takahashi und H. Gomi. „Photogenerated States in a Highly Correlated Electron System“. International Journal of Modern Physics B 17, Nr. 18n20 (10.08.2003): 3370–72. http://dx.doi.org/10.1142/s0217979203021010.
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We study the properties of photogenerated states of strongly correlated electron systems (SCES) with using the 'excited-state' t-J Hamiltonian. The lowest energy state in the two-photon excited manifold is calculated for the 20 site two-dimensional square lattice at half filling. The analysis of the off-diagonal order suggests that the d-wave superconducting state is photogenerated. We propose an optical method using the virtual transition to avoid the temperature growth arising from the optical excitation. We also investigate the transient behavior of the photoexcited state in SCES, which distinctively reflects the spin-charge separation in SCES.
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Samofalov, O. L. „CIVIL LIABILITY OF PERSONNEL OF THE STATE CRIMINAL AND EXECUTIVE SERVICE OF UKRAINE“. Scientific Herald of Sivershchyna. Series: Law 2024, Nr. 2 (17.06.2024): 82–91. http://dx.doi.org/10.32755/sjlaw.2024.02.082.
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The article analyzes the basic concepts and grounds of civil liability, both in the general sense and for the personnel of the SCES (State Criminal and Executive Service of Ukraine). The author reveals the content and methods of compensation for damage caused by an offense during service by persons of the rank and command staff of the SCES of Ukraine. The civil liability of persons of the rank and command staff of the SCES of Ukraine is one of the types of legal liability that arises for the commission of a civil offense, which is understood as an unlawful act or omission of a person that violates the norms of civil law or the terms of a contract, and with which the contract or law links the emergence of civil liability. According to the fact that the activities of SCES of Ukraine personnel are closely related to a wide range of different rights and obligations, and therefore they are entitled to use coercive measures of physical influence, circumstances may arise in which misconduct may result in moral, property and physical harm to certain categories of citizens. Departmental normative-legal acts do not provide for any type of legal liability other than disciplinary, especially civil liability. Therefore, when committing a criminal, administrative or civil law offense, persons of the rank and command staff of the SCES of Ukraine are liable on a general basis. It is proved that compensation for damage can be made in kind or by way of monetary compensation. This means that in case of guilt is proved, the SCES of Ukraine personnel have the opportunity to choose the type of compensation of damage. The article concludes with a definition of civil liability and outlines the ways to improve the enforcement of the rights of SCES of Ukraine personnel if it is necessary to implement the principle of compensation. Key words: staff, State Criminal and Executive Service of Ukraine; persons of the rank and command staff; liability; civil liability; legal liability; damage; losses; compensation for damage.
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Sicilia, Alvaro, Manuel Alcaraz-Ibáñez, Delia C. Dumitru, Adrian Paterna und Mark D. Griffiths. „Fitness-Related Self-Conscious Emotions and Risk for Exercise Addiction: Examining the Mediating Role of Passion“. Journal of Sport and Exercise Psychology 42, Nr. 3 (01.06.2020): 240–48. http://dx.doi.org/10.1123/jsep.2019-0260.
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Fitness-related self-conscious emotions (SCEs) have been proposed as antecedents of exercise addiction (EA). However, the potential mechanisms underlying such a relationship remain unexplored. The present study examined the relationship between fitness-related SCEs and risk of EA, as well as the mediating role of passion for exercise. A total of 296 male runners (M = 40.35 years, SD = 10.69) completed a survey assessing weekly exercise frequency/hours, fitness-related SCEs, passion for exercise, and the risk of EA. The relationships between the study variables were examined using structural equation modeling. After controlling for age and weekly exercise frequency/hours, fitness-related SCEs of shame, guilt, and hubristic pride were positively associated with risk of EA. However, while guilt had direct effects on risk of EA, shame and hubristic pride showed indirect effects via obsessive passion. The results of the study are discussed, and some practical implications and future research directions are presented.
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Zaluhovska, H. P. „Use of international experience in the system of selection of ukraine’s penitentiary personnel“. ScientifiScientific Herald of Sivershchyna. Series: Law 2021, Nr. 2 (05.10.2021): 67–78. http://dx.doi.org/10.32755/sjlaw.2021.02.067.
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The peculiarities of candidates’ selection for work in the State Criminal and Executive Service of Ukraine are considered in the article. The statutory regulations that determine the requirements for applicants to serve in the SCES of Ukraine, among which the leading place is occupied by the Law of Ukraine “On the SCES of Ukraine” and the Law of Ukraine “On National Police” are analyzed. The advantages and disadvantages in the functioning of the domestic system of requirements for candidates for work in the SCES of Ukraine are revealed. Enough attention is paid to the Ukrainian and foreign approaches to the staffing of the Penitentiary System. The standard of requirements for candidates for employment in the Penitentiary System, enshrined in international legal acts, is analyzed, as well as the requirements for candidates for employment in such countries as Germany, Switzerland, Iceland, Austria, Canada and Denmark, which are not typical for the Ukrainian Penitentiary System, are considered and analyzed. In order to improve the current legislation governing the selection of persons to the SCES of Ukraine, the article provides a comparative analysis of the procedure for staffing foreign and Ukrainian penitentiary bodies and institutions, as well as the requirements for candidates for the SCES of Ukraine and foreign Penitentiary Systems. Due to this, promising approaches to improving the quality of staffing of the Penitentiary System of Ukraine are revealed and the feasibility of using foreign experience in recruiting for the penitentiary system of Ukraine is substantiated, as well as the changes to current legislation setting requirements for candidates for SCES of Ukraine are proposed. At the same time, it is emphasized that borrowing positive foreign experience of completing penitentiary positions requires amendments to the current legislation of Ukraine, as well as synchronization with the peculiarities of the Ukrainian Penitentiary System by creating a pilot project in order to actually test the results of world analysis, monitoring and tracking the changes, on the basis of which it will be possible to make further decisions. The expediency of creating a separate statutory regulation, the purpose of which is to regulate the procedure for passing the military medical commission exclusively by candidates for service in the SCES of Ukraine and junior enlisted as well as the command staff of the SCES of Ukraine, is substantiated. Key words: penitentiary system, personnel, vacant position, position requirements, selection system.
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Coleman, P. „Theory perspective: SCES ’05 Vienna“. Physica B: Condensed Matter 378-380 (Mai 2006): 1160–69. http://dx.doi.org/10.1016/j.physb.2006.01.530.
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Millis, A. J. „SCES-1998 Conference summary: Theory“. Physica B: Condensed Matter 259-261 (Januar 1999): 1169–72. http://dx.doi.org/10.1016/s0921-4526(98)00797-2.
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Ott, H. R. „SCES-1998 Conference summary: Experimental“. Physica B: Condensed Matter 259-261 (Januar 1999): 1173–76. http://dx.doi.org/10.1016/s0921-4526(98)01077-1.
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von Löhneysen, H. „SCES’99 — Concluding remarks: Experiment“. Physica B: Condensed Matter 281-282 (Juni 2000): 1031–36. http://dx.doi.org/10.1016/s0921-4526(99)00904-7.
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Ueda, Kazuo. „SCES’99 — Concluding remarks: Theory“. Physica B: Condensed Matter 281-282 (Juni 2000): 1026–30. http://dx.doi.org/10.1016/s0921-4526(99)01028-5.
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Winland-Brown,, Jill E., Susan Garnett,, Josie Weiss, und David Newman,. „Using the Six Cs as a Caring Tool to Evaluate the Simulation Experience“. International Journal of Human Caring 17, Nr. 2 (März 2013): 9–15. http://dx.doi.org/10.20467/1091-5710.17.2.9.
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Incorporating caring behaviors into clinical experiences is essential and measuring this can be challenging. Simulated clinical experiences (SCEs) provide an ideal opportunity. The purpose of this research was to develop and pilot test a Caring tool© to assess roach’s six caring behaviors during simulation experiences with advanced practice nursing (APN) students in a family nurse practitioner program. This tool was pilot tested using repeated measures during four SCEs involving 26 to 57 students each time. The internal consistency reliability of this instrument over time was .91. Better evaluation of SCEs using instruments, such as the one described in this study, can promote caring behaviors, as well as strong clinical skills.
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Puspita Sari, Talitha, Rafin Aqsa Izza Mahendra, Ardyono Priyadi, Vita Lystianingrum, Margo Pujiantara und Sjamsjul Anam. „Perbaikan CCT Pada Multi Machine Infinite Bus Dengan Supercapacitor Energy Storage Menggunakan Critical Trajectory“. Jurnal FORTECH 1, Nr. 2 (24.08.2020): 61–67. http://dx.doi.org/10.32492/fortech.v1i2.225.
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Transient stability is an important aspect in maintaining the continuity and reliability of the electrical power system when a sudden large disturbance occurs. However, there is a time operation's limitation of the protection system to eliminate disturbance before the system becomes unstable and loses its synchronization. Critical Clearing Time (CCT) is the toleration time to eliminate the fault to keep the system stable. To improve system stability, installing Supercapacitor Energy Storage (SCES) can be one of the methods for extending the CCT values. SCES absorb large amounts of electricity simultaneously when a fault occurs. This paper proposed a determination of SCES' controller effect in extending the CCT. SCES becomes a dummy load and extends the CCT value depending on the controller's ability to respond to a fault. Controller modeling is applied to SCES, which is installed at the bus generator with determined capacity. The modified Fouad and Anderson 9-bus 3-machine system with a single machine to an infinite bus is used to validate the proposed method. Moreover, the critical trajectory method, which is known as a faster calculation and better accuracy than the time domain simulation method, is used to obtain the CCT value. The result shows that the faster controllers work against fault, the higher the CCT value improvement of system CCT. The highest improvement occurs when the controller works at 0.001s.
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Wójcik, E., E. Smalec und A. Danielewicz. „Sister chromatid exchange in selected horse breeds (<i>Equus caballus</i>)“. Archives Animal Breeding 54, Nr. 2 (10.10.2011): 107–14. http://dx.doi.org/10.5194/aab-54-107-2011.
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Abstract. In studies of chromosome instability, the sister chromatid exchange (SCE) test is a particularly sensitive cytogenetic assay for detecting DNA damage. SCE tests of chromosome instability were performed in the group of 6 horse breeds (Pure-bred Arabian, Malapolski horse, Polish noble half-bred, Polish cold-blooded, Hucul and Polish Konik). The chromosome preparations were obtained from our in vitro culture of peripheral blood lymphocytes stained using the FPG technique. The mean number of SCEs/cell in the analysed population of horses was 5.14±1.44. The mean frequency of SCEs in the 6 analysed horse breeds varied depending on the breed. Statistically significant differences were observed between the horse breeds (P<0.01). No statistically significant differences in the number of SCEs per cell were found between the males and females (5.10±1.34 and 5.20±1.52, respectively). The horses were also assessed for the number of SCEs/cell in relation to the age of the animals. The differences between the age groups were statistically significant (P<0.01).
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Lin, Shu-Hui, und Yun-Chen Huang. „Assessing College Student Engagement: Development and Validation of the Student Course Engagement Scale“. Journal of Psychoeducational Assessment 36, Nr. 7 (09.03.2017): 694–708. http://dx.doi.org/10.1177/0734282917697618.
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Student engagement appears to be associated with high-quality learning outcomes. Thus, it is important to measure whether students are engaging effectively in class. This article describes the development and validation of a measure of student engagement named the Student Course Engagement Scale (SCES). Exploratory and confirmatory analyses were conducted on two independent samples ( n = 543 and n = 893, respectively) of Taiwanese college students. The resultant 20-item SCES demonstrated good reliability and factorial validity as well as being correlated positively with other engagement measures. The results also confirm the measurement invariance of the five-factors SCES across different gender groups. This instrument provides a practical and valuable tool for assessing course engagement among Chinese college students.
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Ghelli, Federica, Enrico Cocchi, Valeria Bellisario, Martina Buglisi, Giulia Squillacioti, Alfredo Santovito und Roberto Bono. „The formation of SCEs as an effect of occupational exposure to formaldehyde“. Archives of Toxicology 96, Nr. 4 (12.02.2022): 1101–8. http://dx.doi.org/10.1007/s00204-022-03238-w.
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AbstractFormaldehyde (FA) is a ubiquitous toxic chemical employed worldwide due to its disinfectant and preservative properties. Despite being classified as a human carcinogen, FA is still employed as formalin in pathology wards as standard fixative. We evaluated its relationship with the formation of sister-chromatid exchanges (SCEs) in cultured peripheral blood lymphocytes on 57 pathologists and 48 controls and the risk/protective role played by several genetic polymorphisms. All subjects were assessed for SCEs and genotyped for the most common cancer-associated gene polymorphisms: CYP1A1 exon 7 (A > G), CYP1A1*2A (T > C), CYP2C19*2 (G > A), GSTT1 (presence/absence), GSTM1 (presence/absence), GSTP1 (A > G), XRCC1 (G399A), XRCC1 (C194T), XRCC1 (A280G), XPC exon 15 (A939C), XPC exon 9 (C499T), TNFα − 308 G > A), IL10 − 1082 (G > A), and IL6 − 174 (G > C). Air-FA concentration was assessed through passive personal samplers. Pathologists, exposed to 55.2 μg/m3 of air-FA, showed a significantly higher SCEs frequency than controls, exposed, respectively, to 18.4 μg/m3. Air-FA was directly correlated with SCEs frequency and inversely with the replication index (RI). Regression models showed FA exposure as a significant predictor in developing SCEs, while did not highlight any role of the selected polymorphisms. Our study confirms the role of low air-FA levels as genotoxicity inductor, highlighting the importance to define exposure limits that could be safer for exposed workers.
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Sari, Talitha, Maya Sari, Gabriela Sulistyo, Ardyono Priyadi, Vita Lystianingrum und Mauridhi Purnomo. „Optimal Sizing of Supercapacitor Energy Storage Based on Firefly Algorithm for Enhancing Critical Clearing Time“. International Journal of Intelligent Engineering and Systems 14, Nr. 1 (28.02.2021): 464–73. http://dx.doi.org/10.22266/ijies2021.0228.43.
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In the present day, the electrical power demand is increasing and expected to continue growing. The renewable energy sources as the power supply are also increasing but not much as needed. As a result, the power systems operate close to their maximum stability limit. This paper proposed to extend the value of Critical Clearing Time (CCT) to enhance the stability system, especially the transient stability. A Supercapacitor Energy Storage (SCES) is installed at one of the generator bus; however, the sizing of SCES must be optimized due to the economics and power balance constraint. In this paper, the Firefly Algorithm (FA) is used to obtain the optimal sizing of SCES with the objective function is the highest value of CCT. Lagrange interpolation is used to validate the effectiveness of FA, such as computation time and accuracy. According to the simulation result obtained, the proposed method using FA has a faster calculation time than Lagrange interpolation. Moreover, the proposed method is validated on a modified IEEE 9 bus with various cases. By using FA, the best increase of CCT is obtained when the optimal size of SCES is 0.120 p.u. The overall CCT increase is 0.15766s or around 54.61%.