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1
MA, S. Y., Y. P. GUO, Y. Y. WANG, and X. Q. LIU. "A STUDY ON ELECTROLUMINESCENCE FROM Au/Ge-CONTAINING SILICON OXIDE/p-Si AND Au/Si-RICH SILICON OXIDE/p-Si STRUCTURES." Surface Review and Letters 08, no. 05 (October 2001): 483–86. http://dx.doi.org/10.1142/s0218625x01001361.
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Ge-containing silicon oxide (GSO) films (5–15 nm) and Si-rich silicon oxide (SSO) films (5–15 nm) were deposited using the RF magnetron sputtering technique with a Ge–SiO 2 and a Si–SiO 2 composite target, respectively. The Au/GSO/p-Si and Au/SSO/p-Si structures were fabricated and their electroluminescence (EL) characteristics were comparatively studied. Both of the Au/GSO/p-Si and Au/SSO/p-Si structures have rectifying behavior. All the EL spectra from the two types of the structure have almost unchanged peak positions around 650 nm (~1.9 eV) and are independent of applied forward biases. The EL mechanisms for the Au/GSO/p-Si and Au/SSO/p-Si structures have been discussed.
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May, Bonnie L., Henry Yee, and Donald G. Lee. "Oxygen transfer reactions. 2. A comparison of the reactions of ruthenium tetroxide, chromyl chloride, and permanganate with thianthrene 5-oxide." Canadian Journal of Chemistry 72, no. 11 (November 1, 1994): 2249–54. http://dx.doi.org/10.1139/v94-286.
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Products obtained from the oxidation of thianthrene 5-oxide, SSO, have been used to compare oxygen transfer mechanisms for three high-valent transition metals. Oxidation of SSO by benzyltriethylammonium permanganate in methylene chloride gives the corresponding sulfone, thianthrene 5,5-dioxide (SSO2), as the exclusive product. Oxidation of SSO by ruthenium tetroxide also gives SSO2 as the predominant product along with minor amounts of the disulfoxide, thianthrene 5,10-dioxide (SOSO). However, the converse is observed when chromyl chloride is used as the oxidant; SOSO is the major product. It is suggested that oxygen transfers from permanganate and ruthenium tetroxide are initiated by complexation between the central metal atom and the oxygen end of the S=O dipole, while oxidation by chromyl chloride is likely initiated by an alternative mechanism, possibly a single electron transfer.
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Hu, Yu, Xing Wen Zhang, and Hong You. "Morphology Measurement on Phenolic-Resin/Vitreous-Silica-Fabric Ablation Composites Modified with Tetraethoxysilicate and Silsesquioxanes." Applied Mechanics and Materials 333-335 (July 2013): 1934–37. http://dx.doi.org/10.4028/www.scientific.net/amm.333-335.1934.
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This study focused on phenolic-resin/vitreous-silica-fiber (PR/VSF) ablation composites modified with silsesquioxane (SSO) and tetraethoxysilicate (TEOS). Three nanohybrids based on TEOS-SiO2(T-SiO2), octamethyl-SSO (Me-SSO) and phenyl-SSO (Ph-SSO) were prepared and employed to modify the PR/VSF ablation materials, T-SiO2/PR/VSF, Me-SSO /PR/VSF and Ph-SSO /PR/VSF. At a high temperature, the modified PR/VSiF coatings were melted under heats and then generated pre-ceramic bodies, avoiding damages from the heats for the parts of the body inside. To compare ablation properties of the three modifiers, the correlation of the material structures and ablation properties were discussed with ablation tests and morphology measured by SEM. As a result, the linear and the mass ablation of the three composites are in the order of T-SiO2/PR/VSF > Me-SSO/PR/VSF > Ph-SSO/PR/VSF. Therefore, the properties of Ph-SSO show that it is suitable and more effective as a modifier for ablation materials. In the temprature of about 2000oC, the results of ablative coating basically reached the expected technical indix.
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Lv, Wan, Peixin Xu, Feng Zhou, Mingyang Gao, and Zhiqin Zhao. "A comprehensive localization and assessment method for SSO in power systems with wind power." Journal of Physics: Conference Series 2704, no. 1 (February 1, 2024): 012011. http://dx.doi.org/10.1088/1742-6596/2704/1/012011.
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Abstract Subsynchronous Oscillation (SSO) is a common dynamic stability issue in power systems that integrate wind power. This paper proposes a comprehensive method for assessing the localization of SSO in wind power integrated systems. The localization method applies the transient energy flow approach to identify SSO sources in systems with wind power. Additionally, a relevant SSO index system is established where the value of each index is calculated. By using the Fuzzy Inference System (FIS) to judge the index, the SSO disturbance source contribution rating of each area is obtained. Simulation cases demonstrate that the localization method of the transient energy flow approach can effectively identify the SSO disturbance source. Moreover, the SSO disturbance source contribution rating method based on FIS can determine the SSO contribution degree of each area, thus identifying the dominant oscillation disturbance sources. The proposed method can provide valuable insights for formulating emergency control measures.
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Sun, Dongyang, Fanyi Meng, and Wenqiang Shen. "Study on Suppression Strategy for Broadband Sub-Synchronous Oscillation in Doubly-Fed Wind Power Generation System." Applied Sciences 12, no. 16 (August 20, 2022): 8344. http://dx.doi.org/10.3390/app12168344.
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In the power transmission of doubly-fed induction generators (DFIGs), sub-synchronous oscillation (SSO) can occur due to the influence of series compensation capacitance and long-distance transmission. SSO not only affects the output of the DFIG but also leads to oscillation diffusion. In order to solve the problem of disturbance in the control of the DFIG rotor side converter (RSC) under SSO, an adaptive quasi-resonant controller is proposed for the suppression of SSO. This strategy focuses on the propagation path of and frequency change in the SSO in the RSC control system and suppresses the SSO current in the wideband through the cooperative control of the back-stepping controller and the adaptive quasi-resonant controller. In this way, the stator-side output of the DFIG will not be affected by SSO, thus avoiding the amplification of the sub-synchronous power of the line by the DFIG. A simulation model and experimental platform were built to verify the suppression effect of this control strategy on the DFIG stator sub-synchronous current at different SSO frequencies. The results show that the proposed strategy has a good suppression effect on broadband SSO.
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Lee, Hee-Sung, Ji-Hyun Park, Chan-Su Park, and Chong-Kil Lee. "Therapeutic efficacy and mechanism of a solubilized Sturgeon oil in a mouse model of house dust mite-induced atopic dermatitis." Journal of Immunology 210, no. 1_Supplement (May 1, 2023): 151.13. http://dx.doi.org/10.4049/jimmunol.210.supp.151.13.
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Abstract The therapeutic effect and action mechanism of solubilized Sturgeon oil (SSO) against atopic dermatitis (AD) were examined in NC/Nga mice. SSO was prepared from the fish oil obtained from Sturgeons using physical solubilization processes. AD was induced by topical application of house dust mite (HDM) extract on the dorsal skin of NC/Nga mice, and then treated with SSO. SSO exerted potent therapeutic activity on AD symptoms. Histological analysis revealed that SSO reduced epidermal hyperplasia and suppressed infiltration of mast cells and eosinophils in the dorsal skin. In addition, SSO significantly reduced the serum total IgE and HDM-specific IgE levels in AD-induced NC/Nga mice. Analysis of the dorsal skin tissues showed that SSO significantly downregulated the expression levels of IL-4, 5, 13, 17A and COX-2, while upregulated the expression levels of IL-10 and filaggrin. In vitro studies also showed that SSO suppressed the production of Th2 cytokines including IL-4, 5 and 13, while increasing the production of IL-10, from anti-CD3/CD28-stimulated Th2 cells. These results show that SSO exerts therapeutic effect on AD in NC/Nga mice through Th2-related immunomodulatory activities.
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Liu, Yingming, Guoxian Guo, Xiaodong Wang, Hanbo Wang, and Liming Wang. "Sub-Synchronous Oscillation Suppression Strategy Based on Impedance Modeling by Attaching Virtual Resistance Controllers for Doubly-Fed Induction Generator." Electronics 11, no. 14 (July 21, 2022): 2272. http://dx.doi.org/10.3390/electronics11142272.
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A sub-synchronous oscillation (SSO) suppression strategy of attaching virtual resistance controllers to the rotor-side converter (RSC) of the doubly-fed induction generator (DFIG) is proposed in this study to suppress sub-synchronous oscillation (SSO) caused by series compensation and grid connection of DFIG. A DFIG-based frequency domain impedance model considering RSC control under small signal perturbations is developed in a three-phase stationary coordinate system. Subsequently, the factors and mechanisms of SSO in the system with different phase sequences are analyzed in combination with the equivalent RLC resonant circuit of a DFIG-based series-compensated grid-connected system (SCGCS). SSO occurs when RSC and rotor winding generate a large equivalent negative resistance at the SSO frequency, resulting in a negative total system resistance. Additionally, the influences of series compensation degree (SCD) of line and inner loop parameters (ILPs) of RSC related to the total impedance of the system on the SSO characteristics are analyzed to optimize the parameters and improve the system stability. Based on the causes of SSO, virtual resistance controllers are attached to RSC to provide positive resistance to the system and to offset the equivalent negative resistance of RSC and rotor winding at the SSO frequency, thereby avoiding SSO of the system. Finally, time-domain simulations using power system computer aided design/electromagnetic transients including dc (PSCAD/EMTDC) show that the SSO of the system is effectively suppressed.
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Fang, Zhicheng, Wanjiang Wang, Yanhui Chen, Hui Fan, Ruoqi Dong, Dongbing Pang, and Junkang Song. "Numerical Analysis of Natural Ventilation on One Side of a Room with Two Different Opening Configurations." Sustainability 15, no. 14 (July 24, 2023): 11456. http://dx.doi.org/10.3390/su151411456.
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Single-side natural ventilation is a commonly used means of ventilation to effectively regulate the thermal environment in building interiors without any fossil energy consumption. To achieve most of the potential for the efficiency of single-side natural ventilation, research needs to be undertaken into the forces that drive single-side natural ventilation. This paper examines the single-side natural ventilation of a single vertical single opening (SSO) and a vertical double opening (SDO) in a freestanding building under wind and thermal pressure. The change in the trajectory of vortex shedding when the building is leeward as well as the frequency of vortex shedding in square buildings was investigated by large eddy simulation (LES), and computational fluid dynamics was used to analyze the difference in the air exchange rate of single-side natural ventilation of SSO and SDO in the windward and leeward conditions of the building. Both of these methods were used in conjunction with one another. According to the findings, the creation of vortices at SSO and SDO in the presence of low wind speeds reduces the ventilation effect of thermal pressure under windward circumstances. Consequently, the influence of thermal stress and wind stress ultimately cancel each other out, and this phenomenon finally disappears as the wind blowing from the outside of the structure increases. The shedding of vortices in the leeward state accomplishes a form of air supply pumping with a particular periodicity of airflow fluctuations in the lateral direction. The Strouhal number computed using the LES simulation acts in a manner consistent with the experimental findings.
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Sofwan, Agus, and M. Fathur Rochman. "ANALISA SISTEM KOORDINASI KERJA RELAY DENGAN RECLOSER PADA PENYULANG BERBASIS SIMULASI ETAP." SINUSOIDA 25, no. 2 (December 2, 2023): 13–19. http://dx.doi.org/10.37277/s.v25i2.1923.
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Untuk mengurangi dampak gangguan diperlukan sistem proteksi. Gangguan yang terjadi berupa gangguan hubung singkat antar fasa, tiga fasa, dua fasa, dan satu fasa ke tanah. Sistem proteksi berkoordinasi dengan PMT, Recloser serta SSO untuk meminimalisir daerah padam. Recloser dapat mendeteksi arus gangguan sesaat atau tetap, dan memerintahkan PMT untuk membuka dan menutup kembali. Pada riset ini akan membahas Penyulang Srikandi di ULP Cibitung. Adapun hasil setting time yang diperoleh untuk penyulang srikandi pada arus hubung singkat 3 fasa PMT penyulang srikandi = 0,37 dan recloser penyulang srikandi = 0,173. Pada arus hubung singkat 1 fasa PMT penyulang srikandi = 0,43 dan recloser penyulang srikandi = 0,19. terdapat dua kemungkinan posisi gangguan : Jika gangguan sesudah SSO, maka recloser yang bekerja terlebih dahulu. Karena SSO hanya akan bekerja apabila hilangnya tegangan dan merasakan gangguan. Saat recloser open, maka SSO merasakan adanya tegangan yang hilang, kemudian SSO akan open. Saat SSO open, maka recloser akan menutup kembali. Karena gangguan telah dilepas oleh SSO. Sehingga saat recloser menutup kembali, recloser tidak mendeteksi adanya arus gangguan. Dengan begitu, jaringan PMT masih dapat teraliri listrik. Jika gangguan sesudah recloser, maka yang akan bekerja adalah recloser dan SSO tidak bekerja. Dengan demikian, perbandingan perhitungan manual dan simulasi yang didapat dengan rata-rata gangguan 3 fasa nilainya 5,23, gangguan 2 fasa nilainya 4,59, gangguan 1 fasa nilainya 2,31.
Kata kunci: Arus hubung singkat, Koordinasi, PMT, Recloser, SSO
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Mohale, Vijay, and Thanga Raj Chelliah. "Impact of Fixed/Variable Speed Hydro, Wind, and Photovoltaic on Sub-Synchronous Torsional Oscillation—A Review." Sustainability 15, no. 1 (December 21, 2022): 113. http://dx.doi.org/10.3390/su15010113.
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Series compensation is a cost-efficient way to enhance the system reliability and the power transfer capabilities of long transmission lines. As a result of series compensation, the sub-synchronous oscillation (SSO) causes a severe risk of torsional interactions (TI). Therefore, SSO becomes a serious risk factor in grid-integrated renewable energy systems. Numerous researchers have evaluated SSO instances in several types of asynchronous generators in power systems. In this paper, the categorization and the overview of the SSO phenomena have been vital for the different mechanisms, sophisticated systems, analytical techniques, and multiple reviews that have been propagated. This study provides SSO analysis for various types of renewable energy power plants. Finally, while dealing with conventional and new power systems, this study summarizes recent SSO-damping and alleviation techniques for practical perception and future perspectives.
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Winchester, David P. "SSO news." Annals of Surgical Oncology 1, no. 1 (January 1994): 87–89. http://dx.doi.org/10.1007/bf02303546.
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Winchester, David P. "SSO news." Annals of Surgical Oncology 1, no. 2 (March 1994): 179. http://dx.doi.org/10.1007/bf02303563.
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Xin, Leyu, Limin Guo, Salamet Edirs, Zepeng Zhang, Chenyang Cai, Yongxing Yang, Yali Lian, and Haiyan Yang. "An Efficient Deacidification Process for Safflower Seed Oil with High Nutritional Property through Optimized Ultrasonic-Assisted Technology." Molecules 27, no. 7 (April 1, 2022): 2305. http://dx.doi.org/10.3390/molecules27072305.
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Safflower seed oil (SSO) is considered to be an excellent edible oil since it contains abundant essential unsaturated fatty acids and lipid concomitants. However, the traditional alkali-refined deacidification process of SSO results in a serious loss of bioactive components of the oil and also yields massive amounts of wastewater. In this study, SSO was first extracted by ultrasonic-assisted ethanol extraction (UAEE), and the extraction process was optimized using random centroid optimization. By exploring the effects of ethanol concentration, solid–liquid ratio, ultrasonic time, and the number of deacidification times, the optimum conditions for the deacidification of safflower seed oil were obtained as follows: ethanol concentration 100%, solid–liquid ratio 1:4, ultrasonic time 29 min, and number of deacidification cycles (×2). The deacidification rate was 97.13% ± 0.70%, better than alkali-refining (72.16% ± 0.13%). The values of acid, peroxide, anisidine and total oxidation of UAEE-deacidified SSO were significantly lower than those of alkali-deacidified SSO (p < 0.05). The contents of the main lipid concomitants such as tocopherols, polyphenols, and phytosterols in UAEE-decidified SSO were significantly higher than those of the latter (p < 0.05). For instance, the DPPH radical scavenging capacity of UAEE-processed SSO was significantly higher than that of alkali refining (p < 0.05). The Pearson bivariate correlation analysis before and after the deacidification process demonstrated that the three main lipid concomitants in SSO were negatively correlated with the index of peroxide, anisidine, and total oxidation values. The purpose of this study was to provide an alternative method for the deacidification of SSO that can effectively remove free fatty acids while maintaining the nutritional characteristics, physicochemical properties, and antioxidant capacity of SSO.
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Pei-Zhen, Xu, Lu Yong-Geng, and Cao Xi-Min. "Overview of Subsynchronous Oscillation in Grid-connected Wind Farm." Recent Advances in Electrical & Electronic Engineering (Formerly Recent Patents on Electrical & Electronic Engineering) 13, no. 7 (November 4, 2020): 969–79. http://dx.doi.org/10.2174/2352096513999200407103526.
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Background: Over the past few years, the subsynchronous oscillation (SSO) caused by the grid-connected wind farm had a bad influence on the stable operation of the system and has now become a bottleneck factor restricting the efficient utilization of wind power. How to mitigate and suppress the phenomenon of SSO of wind farms has become the focus of power system research. Methods: This paper first analyzes the SSO of different types of wind turbines, including squirrelcage induction generator based wind turbine (SCIG-WT), permanent magnet synchronous generator- based wind turbine (PMSG-WT), and doubly-fed induction generator based wind turbine (DFIG-WT). Then, the mechanisms of different types of SSO are proposed with the aim to better understand SSO in large-scale wind integrated power systems, and the main analytical methods suitable for studying the SSO of wind farms are summarized. Results: On the basis of results, using additional damping control suppression methods to solve SSO caused by the flexible power transmission devices and the wind turbine converter is recommended. Conclusion: The current development direction of the SSO of large-scale wind farm grid-connected systems is summarized and the current challenges and recommendations for future research and development are discussed.
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Zhu, Wenbo, Chia-Ling Huang, Wei-Chang Yeh, Yunzhi Jiang, and Shi-Yi Tan. "A Novel Bi-Tuning SSO Algorithm for Optimizing the Budget-Limited Sensing Coverage Problem in Wireless Sensor Networks." Applied Sciences 11, no. 21 (October 30, 2021): 10197. http://dx.doi.org/10.3390/app112110197.
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The wireless sensor network (WSN) plays an essential role in various practical smart applications, e.g., smart grids, smart factories, Internet of Things, and smart homes, etc. WSNs are comprised and embedded wireless smart sensors. With advanced developments in wireless sensor networks research, sensors have been rapidly used in various fields. In the meantime, the WSN performance depends on the coverage ratio of the sensors being used. However, the coverage of sensors generally relates to their cost, which usually has a limit. Hence, a new bi-tuning simplified swarm optimization (SSO) is proposed that is based on the SSO to solve such a budget-limited WSN sensing coverage problem to maximize the number of coverage areas to improve the performance of WSNs. The proposed bi-tuning SSO enhances SSO by integrating the novel concept to tune both the SSO parameters and SSO update mechanism simultaneously. The performance and applicability of the proposed bi-tuning SSO using seven different parameter settings are demonstrated through an experiment involving nine WSN tests ranging from 20, 100, to 300 sensors. The proposed bi-tuning SSO outperforms two state-of-the-art algorithms: genetic algorithm (GA) and particle swarm optimization (PSO), and can efficiently accomplish the goals of this work.
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Sun, Dong-Yang, Zi-Jie Qian, Wen-Qiang Shen, Kai Zhou, Ning-Zhi Jin, and Qing-Guo Chen. "Mechanism Analysis of Multiple Disturbance Factors and Study of Suppression Strategies of DFIG Grid-Side Converters Caused by Sub-Synchronous Oscillation." Electronics 12, no. 10 (May 18, 2023): 2293. http://dx.doi.org/10.3390/electronics12102293.
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With the increasing utilization of electronic equipment in the power system, sub-synchronous oscillation (SSO) has occurred many times and caused off-grid accidents because of power oscillation. SSO has become one of the main problems that restrict the development of new energy. In this paper, power oscillation in grid-side converters (GSCs) in doubly-fed induction generators (DFIGs) under SSO is studied. Firstly, the influence mechanism of SSO on GSC multipath disturbance is studied. Secondly, the problem of coupling oscillation caused by PLL output errors after coordinate transformation is studied, and the mathematical model of GSC output power considering SSO multipath disturbance is established. By analyzing the oscillation suppression ability of the quasi-resonant controller under variable SSO states, the key influencing factors of SSO for GSC power oscillation suppression strategies are determined. Furthermore, based on the above theoretical analysis and research, an improved PLL is designed to eliminate the influence of its output errors on the disturbance of GSC. At the same time, a DFIG-GSC power oscillation suppression strategy using an adaptive quasi-resonant controller is designed to eliminate the influence of SSO on the multi-path disturbance of GSC. Finally, the effectiveness of the proposed suppression strategy is verified using simulation and experimental results.
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Belhadi, J., Z. Hanani, U. Trstenjak, N. A. Shepelin, V. Bobnar, G. Koster, J. Hlinka, et al. "Large imprint in epitaxial 0.67Pb(Mg1/3Nb2/3)O3-0.33PbTiO3 thin films for piezoelectric energy harvesting applications." Applied Physics Letters 121, no. 18 (October 31, 2022): 182903. http://dx.doi.org/10.1063/5.0115777.
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Tuning and stabilizing a large imprint in epitaxial relaxor ferroelectric thin films is one of the key factors for designing micro-electromechanical devices with an enhanced figure of merit (FOM). In this work, epitaxial 500 nm-thick 0.67Pb(Mg1/3Nb2/3)O3–0.33PbTiO3 (PMN–33PT) films, free from secondary phases and with extremely low rocking curves (FWHM < 0.05°), are grown on ScSmO3 (SSO) and DyScO3 (DSO) substrates buffered with SrRuO3 (SRO). The PMN–33PT is observed to grow coherently on SSO substrates (lattice mismatch of −0.7%), which is c-axis oriented and exhibits large tetragonality compared to bulk PMN–33PT, while on DSO substrates (lattice mismatch of −1.9%), the PMN–33PT film is almost completely relaxed and shows reduced tetragonality. Due to the compressive epitaxial strain, the fully strained PMN–33PT film displays typical ferroelectric P–E hysteresis loops, while the relaxed sample shows relaxor-like P–E loops. Samples present large negative imprints of about −88.50 and −49.25 kV/cm for PMN–33PT/SRO/SSO and PMN–33PT/SRO/DSO, respectively, which is more than threefold higher than the coercive field. The imprint is induced by the alignment of defect dipoles with the polarization and is tuned by the epitaxial strain. It permits the stabilization of a robust positive polarization state (Pr ∼ 20 μC/cm2) and low dielectric permittivity (<700). In addition, the relaxed PMN–33PT film shows improved piezoelectric properties, with a 33% enhancement in d33,eff relative to the fully strained sample. The obtained low dielectric permittivity and the high piezoelectric coefficients at zero electric field in the studied PMN–33PT films hold great promise to maximize the FOM toward applications in piezoelectric devices.
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Gonzaga, J. M. S., R. O. Manoel, A. C. B. Sousa, A. P. Souza, M. L. T. Moraes, M. L. M. Freitas, and A. M. Sebbenn. "Pollen contamination and nonrandom mating in a Eucalyptus camaldulensis Dehnh seedling seed orchard." Silvae Genetica 65, no. 1 (December 1, 2016): 1–11. http://dx.doi.org/10.1515/sg-2016-0001.
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AbstractEucalyptus camaldulensishas potential for timber, energy, pulp and cellulose production in Brazil due to its ability to adapt to a variety of environmental conditions. The use of improved seeds, selected for economic growth traits, is necessary to increase productivity of commercial stands. Seed seedlings orchards (SSO) are one option for improved seed production. However, pollen contamination from unimproved populations, as well as non-random mating in the SSO, can decrease the predicted genetic gains in selected populations. Thus, we investigate the mating system, pollen flow and dispersal patterns in anE. camaldulensisSSO and progeny test (PT), established with seedlings collected in the SSO, using seven microsatellite loci. All trees in the SSO were mapped, sampled, and genotyped. For the PT, we sampled, genotyped, and measured the total height of seedlings from 25 families. We detected 10 % inbreeding in the PT, resulting mainly from selfing. Furthermore, we found a correlated mating rate of 18.5 % in the SSO, indicating that within the PT there are some full-sibs. Using paternity analysis, we found 14.7 % pollen contamination and a pattern of pollen dispersal between near neighbor trees in the SSO. We found 9.5 % of inbreeding depression for seedlings height. Due to pollen contamination and nonrandom mating in the SSO, the actual genetic gains for growth traits in the PT are probably lower than the predicted genetic gains. We discuss some management strategies in the SSO that can be used to increase genetic gains in commercial reforestation established using seeds collected from the SSO
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Guntoro, Guntoro, and Muhammad Fikri. "Perancangan Aplikasi Single Sign-On Menggunakan Autentikasi Gambar." Digital Zone: Jurnal Teknologi Informasi dan Komunikasi 9, no. 1 (May 30, 2018): 12–21. http://dx.doi.org/10.31849/digitalzone.v9i1.648.
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Aplikasi single sign-on (SSO) adalah sebuah sistem otentikasi login yang mengizinkan bagi seorang pengguna dapat mengakses banyak sistem hanya dengan satu akun aja. Dengan sistem single sign-on (SSO) tersebut, seorang user sistem aplikasi hanya cukup melakukan otentikasi sekali saja untuk masuk ke semua layanan yang terdapat pada dalam sistem aplikasi. Otentikasi login berbasis teks pada sistem single sign-on (SSO) yang sudah ada saat ini, mempunyai kelemahan, salah satunya adalah pencurian password dengan aplikasi keylogger. Perancangan aplikasi sistem single sign-on (SSO) yang dikembangkan dengan mencoba menambahkan otentikasi menggunakan gambar. Gambar yang digunakan telah diberikan sebuah keamanan yaitu menggunakan teknik steganografi dengan metode Least Significant Bit.
Abstract
Single sign-on (SSO) application is a login authentication system that allows a user to access multiple systems with just one account. With a single sign-on (SSO) system, an application system user only just authenticates once to log in to all services contained in the application system. Text-based login authentication on existing single sign-on (SSO) systems, has a weakness, one of which is password theft with keylogger apps. The design of single sign-on (SSO) system applications developed by trying to add authentication using images. The image used has been given a security that is using steganography technique with a method of the Least Significant Bit.
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Guntoro, Guntoro, and Muhammad Fikri. "Perancangan Aplikasi Single Sign-On Menggunakan Autentikasi Gambar." Digital Zone: Jurnal Teknologi Informasi dan Komunikasi 9, no. 1 (May 30, 2018): 12–21. http://dx.doi.org/10.31849/dz.v9i1.648.
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Aplikasi single sign-on (SSO) adalah sebuah sistem otentikasi login yang mengizinkan bagi seorang pengguna dapat mengakses banyak sistem hanya dengan satu akun aja. Dengan sistem single sign-on (SSO) tersebut, seorang user sistem aplikasi hanya cukup melakukan otentikasi sekali saja untuk masuk ke semua layanan yang terdapat pada dalam sistem aplikasi. Otentikasi login berbasis teks pada sistem single sign-on (SSO) yang sudah ada saat ini, mempunyai kelemahan, salah satunya adalah pencurian password dengan aplikasi keylogger. Perancangan aplikasi sistem single sign-on (SSO) yang dikembangkan dengan mencoba menambahkan otentikasi menggunakan gambar. Gambar yang digunakan telah diberikan sebuah keamanan yaitu menggunakan teknik steganografi dengan metode Least Significant Bit.
Abstract
Single sign-on (SSO) application is a login authentication system that allows a user to access multiple systems with just one account. With a single sign-on (SSO) system, an application system user only just authenticates once to log in to all services contained in the application system. Text-based login authentication on existing single sign-on (SSO) systems, has a weakness, one of which is password theft with keylogger apps. The design of single sign-on (SSO) system applications developed by trying to add authentication using images. The image used has been given a security that is using steganography technique with a method of the Least Significant Bit.
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Fang, Jian Hua, Dong Yong Xia, Bo Shui Chen, Jiang Wu, and Jiu Wang. "Friction and Wear Performances of Magnesium Alloy against Steel under Lubrication of Soybean Oil with S-Containing Additive." Applied Mechanics and Materials 538 (April 2014): 19–23. http://dx.doi.org/10.4028/www.scientific.net/amm.538.19.
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A S-containing additive, sulfuration modified soybean oil (named as SSO), was prepared by chemical modification of soybean oil with sulfur compounds. The friction and wear performances of AZ91D magnesium alloy against GCr15 bearing steel under the lubrication of rapeseed oil formulated with SSO were evaluated on a SRV tribotester. The topographies and the chemical species of the worn surfaces of magnesium alloy were analyzed by a scanning electron microscope (SEM) and an X-ray photoelectron spectroscope (XPS), respectively. The results indicated that the friction and wear of the magnesium alloy-steel tribomates could be effectively reduced by formulating SSO into rapeseed oil lubricant. The friction coefficients and the wear volumes of magnesium alloy decreased with increasing contents of SSO. The surface lubricated with SSO-doped rapeseed oil was characterized by less wear as compared with that lubricated with neat rapeseed oil. The enhanced anti-wear and friction-reducing abilities of rapeseed oil by SSO in the lubrication of magnesium alloy against steel were ascribed to the formation of a composite boundary lubrication film due to the strong adsorption of SSO and rapeseed oil onto the lubricated surfaces and their tribochemical reactions with magnesium alloy.
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Denis, Pablo A. "Theoretical characterisation of the SSO, cyclic SOS and SOS isomers." Molecular Physics 108, no. 2 (January 20, 2010): 171–79. http://dx.doi.org/10.1080/00268970903580166.
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Wang, Xie, Li, Miao, and Wu. "Oxidative Stability of Stripped Soybean Oil during Accelerated Oxidation: Impact of Monoglyceride and Triglyceride—Structured Lipids Using DHA as sn-2 Acyl-Site Donors." Foods 8, no. 9 (September 12, 2019): 407. http://dx.doi.org/10.3390/foods8090407.
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The current work aimed to clarify the effects of four structured lipids, including monoglycerides with docosahexaenoic acid (2D-MAG), diacylglycerols with caprylic acid (1,3C-DAG), triglyceride with caprylic acid at sn-1,3 and DHA at sn-2 position (1,3C-2D-TAG) and caprylic triglyceride on the oxidative stability of stripped soybean oil (SSO). The results revealed that compared to the blank group of SSO, the oxidation induction period of the sample with 2 wt% 2D-MAG and that with 1,3C-DAG were delayed by 2–3 days under accelerated oxidation conditions (50 °C), indicating that 2D-MAG and 1,3C-DAG prolonged the oxidation induction period of SSO. However, the inhibitory effect of α-tocopherol on SSO oxidation was reduced by 2D-MAG after addition of 2D-MAG to SSO containing α-tocopherol. 2D-MAG exhibited different antioxidative/pro-oxidative effects in the added/non-added antioxidants system. Compared to caprylic triglyceride, DHA at the sn-2 acyl site induced oxidation of structured lipids, thus further promoting the oxidation of SSO. The antioxidant was able to inhibit not only the oxidation of DHA in the SSO, but also the transesterification of sn-2 DHA to sn-1/sn-3 DHA in the structured lipid.
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Pratama, Ahmad R., Firman M. Firmansyah, and Fayruz Rahma. "Security awareness of single sign-on account in the academic community: the roles of demographics, privacy concerns, and Big-Five personality." PeerJ Computer Science 8 (March 11, 2022): e918. http://dx.doi.org/10.7717/peerj-cs.918.
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Single sign-on (SSO) enables users to authenticate across multiple related but independent systems using a single username and password. While the number of higher education institutions adopting SSO continues to grow, little is known about the academic community’s security awareness regarding SSO. This paper aims to examine the security awareness of SSO across various demographic groups within a single higher education institution based on their age, gender, and academic roles. Additionally, we investigate some psychological factors (i.e., privacy concerns and personality traits) that may influence users’ level of SSO security awareness. Using survey data collected from 283 participants (faculty, staff, and students) and analyzed using a hierarchical linear regression model, we discovered a generational gap, but no gender gap, in security awareness of SSO. Additionally, our findings confirm that students have a significantly lower level of security awareness than faculty and staff. Finally, we discovered that privacy concerns have no effect on SSO security awareness on their own. Rather, they interact with the user’s personality traits, most notably agreeableness and conscientiousness. The findings of this study lay the groundwork for future research and interventions aimed at increasing cybersecurity awareness among users of various demographic groups as well as closing any existing gaps between them.
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Fauzi, Esa, Sy Yuliani, Yenie Syukriyah, and Azizah Zakiah. "Model of NFT Implementation on Web SSO over OpenID Connect and Oauth 2.0 protocols." INTECOMS: Journal of Information Technology and Computer Science 6, no. 2 (July 27, 2023): 605–16. http://dx.doi.org/10.31539/intecoms.v6i2.6972.
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Single Sign-On (SSO) is a mechanism that allows users to access various services using a single set of login credentials. However, in SSO implementations, there are still challenges related to security and authentication management, particularly attacks targeting the Identity Provider (IDP). To address this, the use of Non-Fungible Tokens (NFTs) as proof of IDP ownership has been proposed as a solution to enhance security in the authentication mechanism. The utilization of NFTs in SSO with OpenID Connect and OAuth 2.0 has the potential to improve security and convenience in the authentication process due to the unique and non-duplicable nature of NFTs. The results of this research present a model and design of SSO with NFTs on OpenID Connect and OAuth 2.0. An SSO application with login, register, and password recovery features was also developed to provide convenience to users during the login process. The findings conclude that the utilization of NFTs in SSO with OpenID Connect and OAuth 2.0 has the potential to enhance security and convenience in the authentication mechanism. Further research is needed to explore aspects such as scalability, in-depth security analysis, testing in real-world scenarios, improvement of integration and interoperability, as well as comparative analysis with other SSO technologies.
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Song, Yang Cheng Xiang, Jun Luo, and Shu Jun Yao. "Analysis of Sub-Synchronous Oscillation (SSO) Caused by HVDC Transmission System." Advanced Materials Research 960-961 (June 2014): 1243–47. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.1243.
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Sub-synchronous oscillation (SSO) caused by highly non-linear HVDC devices can lead to shaft failure and electrical instability of a turbo-generator at oscillation frequency lower than power grid frequency. With increasing HVDC installed in power systems, analysis of SSO becomes a great concern of electrical engineers. In this paper, the reason and process of the SSO are presented by analyzing equations of the mass-springs model. Research methods of SSO are reviewed in HVDC system. And advantages of digital time-domain simulation are demonstrated through combining with algorithm of Prony.
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Kutluyer, Filiz, Ahmet Necdet Sirkecioğlu, Ercüment Aksakal, Feyza İçoğlu Aksakal, Abdullah Tunç, and Esra Günaydin. "Effect of Dietary Fish Oil Replacement with Plant Oils on Growth Performance and Gene Expression in Juvenile Rainbow Trout (Oncorhynchus mykiss)." Annals of Animal Science 17, no. 4 (October 1, 2017): 1135–53. http://dx.doi.org/10.1515/aoas-2017-0010.
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AbstractAn eight-week feeding trial was conducted to evaluate the effects of total (100%) replacement of dietary fish oil with alternative lipid sources in juvenile rainbow trout. Six iso-nitrogenous and iso-lipidic experimental diets were formulated: CO (14%) – cod liver oil; SSO (14%) – safflower seed oil; SBO (14%) – soybean oil; LO (14%) – linseed oil; SBO (7%) + LO (7%) – a blend of soybean oil and linseed oil; and SSO (7%) + LO (7%) – a blend of safflower seed oil and linseed oil. Growth performance [specific growth rate (SGR), weight gain (WG), food conversion ratio (FCR) and survival rate (SR)], growth hormones [growth hormone (GH-I), insulin-like growth factor-I (IGF-I) and insulin-like growth factor-II (IGF-II)], immune transforming growth factor-β (TGF-β) and antioxidant [superoxide dismutase (SOD), glutathione peroxidase (GPx), glutathione reductase (GR), catalase (CAT) and glutathione S-transferase (GST)] response, and heat shock protein 70 (HSP70) mRNA levels were determined in muscle and liver. Our data indicated that final weight, weight gain, FCR and SGR showed significant difference among the six dietary treatments (P<0.05) while there were no significant differences in survival rate between the rainbow trout from supplement fed groups and control group. HSP70 mRNA level expression in muscle was higher in fish fed SSO (P<0.05) while highest level in liver was obtained from fish fed SBO compared to the other treatments (P<0.05). There were no significant differences among treatments for TGF-β mRNA expression level in muscle and liver. In conclusion, growth performance and expression levels of growth hormones, antioxidants, HSP70, except TGF-β were affected by five separate lipid sources. In addition, LO positively increased growth performance of juvenile rainbow trout by means of preventing oxidative stress and HSP70 and, enhanced expression of growth hormone related gene.
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Waiman, Carolina V., Ignacio E. dell’Erba, Carlos A. Chesta, and María Lorena Gómez. "Hybrid Films Based on a Bridged Silsesquioxane Doped with Goethite and Montmorillonite Nanoparticles as Sorbents of Wastewater Contaminants." Journal of Nanomaterials 2016 (2016): 1–9. http://dx.doi.org/10.1155/2016/6286247.
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The synthesis and characterization of silsesquioxane (SSO) films with pendant dodecyl groups and doped with goethite (Gt) or montmorillonite (MMT) nanoparticles were carried out and the new materials tested as sorbents of diverse contaminants. The synthetic method used yielded SSO films with the inorganic substrates homogeneously distributed within the polymeric matrices. The new materials were characterized by SEM, FTIR, XRD, and DSC and tested to evaluate their capability for adsorbing metallic cations, organic dyes, and phosphate, frequent contaminants of industrial effluents. All films were found suitable for removing metallic cations. Results also showed that the SSO films undoped and doped with Gt are primarily apt for anionic compounds removal. Although the SSO films doped with MMT are capable of removing cationic contaminants from aqueous samples, the stiffness of the SSO matrix hinders MMT properties as an adsorbent. The possibility of dispersing nanoparticulate systems in the stable and chemically inert SSO matrices simplifies their application for contaminant removal, particularly because it makes the separation process of the absorbed pollutant from the treated medium easier.
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Salmuasih and Mukhammad Andri Setiawan. "EVALUASI PENERAPAN SINGLE SIGN-ON SAML DAN OAUTH 2.0: STUDI PADA PERGURUAN TINGGI YOGYAKARTA." JSiI (Jurnal Sistem Informasi) 10, no. 1 (March 22, 2023): 41–49. http://dx.doi.org/10.30656/jsii.v10i1.6186.
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Dalam memutuskan strategi Single Sign-On (SSO) yang efektif, perguruan tinggi perlu memahami manfaat SSO, mengidentifikasi kebutuhan spesifik organisasi, dan memilih protokol yang akan memenuhi kebutuhan tersebut. Kontribusi penelitian ini adalah menganalisis efektifitas penerapan SSO protokol SAML dan OAuth 2.0 pada perguruan tinggi Yogyakarta. Langkah penelitian meliputi pengumpulan data, kemudian melakukan analisis penerapan protokol SAML dan OAuth 2.0 terhadap referensi yang relevan. Pengumpulan data dilakukan melalui literatur review, observasi pada domain-domain website resmi perguruan tinggi, survei, dan wawancara kepada 22 responden dari 17 Pusat IT perguruan tinggi. Dari hasil survei dan wawancara ditemukan ketidaksesuaian penerapan protokol pada 7 perguruan tinggi yang mengintegrasikan aplikasi native (desktop-based/mobile-based) dan IoT menggunakan SAML dan juga ditemukan ketidaksesuaian penerapan protokol yaitu OAuth 2.0 pada 2 perguruan tinggi. Hasil analisis menunjukkan bahwa beberapa perguruan tinggi belum menerapkan SSO secara efektif. Meskipun 60% perguruan tinggi mengklaim telah melakukan riset dalam pemilihan protokol SSO yang digunakan, namun pada praktiknya masih dijumpai penerapan SSO yang justru menambah kompleksitas permasalahan sebelumnya.
Kata kunci: evaluasi, oauth 2.0, perguruan tinggi, saml, single sign-on
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Lin, Hai-Shuang, Lu Zhang, En-Ze Liu, Ling-Ying Ye, Ming-Na Xu, Rong-Han Wu, and Zhi-Xiang Hu. "New technique for removal of perfluorocarbon liquid related sticky silicone oil and literature review." International Journal of Ophthalmology 14, no. 12 (December 18, 2021): 1903–8. http://dx.doi.org/10.18240/ijo.2021.12.14.
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AIM: To investigate the safety and efficacy of sticky silicone oil (SSO) removal using a 22-gauge vein detained needle and inner limiting membrane (ILM) wrap-and-peel technique. METHODS: This retrospective consecutive case series reviewed the records of patients with a history of retinal detachment who had received silicone oil and perfluorocarbon liquid (PFCL) as intraocular tamponades. Patients were included in the analysis if they exhibited SSO remnants during silicone oil removal. The aspiration of most of the SSO remnants was performed by a 22-gauge vein detained needle. The small amounts of droplets adhered to the macula and epi-macular membrane were subsequently removed by the ILM warp-and-peel technique. The anatomical and functional outcomes, and postoperative complications were recorded. In vitro experiments were performed to simulate the formation of SSO remnants in four groups. RESULTS: Of 711 patients who underwent silicone oil removal during the study period, 9 patients exhibited SSO remnants and underwent follow-up for at least 3mo. Seven eyes (78%) underwent the ILM wrap-and-peel technique to completely remove small droplets of SSO that were glued to the macula and epi-macular membrane. No obvious complications occurred. Postoperative optical coherence tomography revealed normal retinal structure in all patients. In vitro analyses showed that balanced salt solution and prolonged vibration (for 1wk) had the strongest effects on silicone oil and PFCL compound opacities. CONCLUSION: SSO remnants could be removed in an intact manner and without complications, using a vein detained needle-assisted and ILM wrap-and-peel technique. The findings suggest that PFCL and infusion fluid should be completely removed before silicone oil injection to prevent SSO formation.
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Biagi, Carlotta, Ludovica Betti, Elisa Manieri, Arianna Dondi, Luca Pierantoni, Ramsiya Ramanathan, Daniele Zama, Monia Gennari, and Marcello Lanari. "Different Pediatric Acute Care Settings Influence Bronchiolitis Management: A 10-Year Retrospective Study." Life 13, no. 3 (February 24, 2023): 635. http://dx.doi.org/10.3390/life13030635.
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Bronchiolitis is the main cause of hospitalization in infants. Diagnosis is clinical, and treatment is based on hydration and oxygen therapy. Nevertheless, unnecessary diagnostic tests and pharmacological treatments are still very common. This retrospective study aimed to evaluate whether the setting of bronchiolitis care influences diagnostic and therapeutic choices. The management of 3201 infants, referred to our Italian Tertiary Care Center for bronchiolitis between 2010 and 2020, was analyzed by comparing children discharged from the pediatric emergency department (PEDd group) undergoing short-stay observation (SSO group) and hospitalization. Antibiotic use in PEDd, SSO, and ward was 59.3% vs. 51.6% vs. 49.7%, respectively (p < 0.001); inhaled salbutamol was mainly administered in PEDd and during SSO (76.1% and 82.2% vs. 38.3% in ward; p < 0.001); the use of corticosteroids was higher during SSO and hospitalization (59.6% and 49.1% vs. 39.0% in PEDd; p < 0.001); inhaled adrenaline was administered mostly in hospitalized infants (53.5% vs. 2.5% in SSO and 0.2% in PEDd; p < 0.001); chest X-ray use in PEDd, SSO, and ward was 30.3% vs. 49.0% vs. 70.5%, respectively (p < 0.001). In a multivariate analysis, undergoing SSO was found to be an independent risk factor for the use of systemic corticosteroid and salbutamol; being discharged at home was found to be a risk factor for antibiotic prescription; undergoing SSO and hospitalization resulted as independent risk factors for the use of CXR. Our study highlights that different pediatric acute care settings could influence the management of bronchiolitis. Factors influencing practice may include a high turnover of PED medical staff, personal reassurance, and parental pressure.
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Alalimi, Ahmed, Lin Pan, Mohammed A. A. Al-qaness, Ahmed A. Ewees, Xiao Wang, and Mohamed Abd Elaziz. "Optimized Random Vector Functional Link network to predict oil production from Tahe oil field in China." Oil & Gas Science and Technology – Revue d’IFP Energies nouvelles 76 (December 17, 2020): 3. http://dx.doi.org/10.2516/ogst/2020081.
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In China, Tahe Triassic oil field block 9 reservoir was discovered in 2002 by drilling wells S95 and S100. The distribution of the reservoir sand body is not clear. Therefore, it is necessary to study and to predict oil production from this oil field. In this study, we propose an improved Random Vector Functional Link (RVFL) network to predict oil production from Tahe oil field in China. The Spherical Search Optimizer (SSO) is applied to optimize the RVFL and to enhance its performance, where SSO works as a local search method that improved the parameters of the RVFL. We used a historical dataset of this oil field from 2002 to 2014 collected by a local partner. Our proposed model, called SSO-RVFL, has been evaluated with extensive comparisons to several optimization methods. The outcomes showed that, SSO-RVFL achieved accurate predictions and the SSO outperformed several optimization methods.
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Li, Ran, Yun Lu, Yang Zhou, and Yun Xiao Li. "The Mitigation of SSO in Doubly-Fed Wind Farms with TCSC." Advanced Materials Research 805-806 (September 2013): 402–6. http://dx.doi.org/10.4028/www.scientific.net/amr.805-806.402.
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When transmitting power to the grid through fixed series compensated lines, the sub-synchronous oscillations (SSO) may occur in doubly-fed wind farms. This paper analyzes the mechanism of SSO in doubly-fed wind farms, establishes the TCSC model and analyzes its equivalent positive resistance and reactance at sub-synchronous frequency so that TCSC can be used to mitigate SSO. A simulation model of the doubly-fed wind farms connected to the network by the fixed series compensated and TCSC is established in MATLAB/SIMULINK, and the appropriate parameters of TCSC is set. The simulation results verified the mitigation of SSO in doubly-fed wind farms with TCSC.
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Ramroudi, Fereshteh, Seyed Ali Yasini Ardakani, Arefeh Dehghani-tafti, and Elham Khalili Sadrabad. "Investigation of the Physicochemical Properties of Vegetable Oils Blended with Sesame Oil and Their Oxidative Stability during Frying." International Journal of Food Science 2022 (March 30, 2022): 1–8. http://dx.doi.org/10.1155/2022/3165512.
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To investigate the antioxidant activity and physicochemical properties of oil, sunflower (SFO) and corn oil (CO) and their combinations with sesame oil (SO) were prepared. The analyses of fatty acid composition (GC-FID), oxidative stability index (Rancimat), smoke point, and antioxidant activity (DPPH) were done on oil samples. Then, the frying process in presence of potato chips was done for 3 days at 180°C. Oil samples were gathered after each frying cycle and chemical analysis (peroxide value, free fatty acid, p-anisidine value, TOTOX, total polar content, TBARS, and conjugated diene and triene) was measured. The major fatty acid composition of oil samples was linoleic acid, oleic acid, palmitic acid, and stearic acid. The OSI of oil samples was reported as CSO > SSO > SO > CO > SFO . The smoke point of all samples was in the standard limit. The SFO with 266.50°C had the highest smoke point. The antioxidant activity of samples was reported as SO > CSO > CO > SSO > SFO . The IC50 of SO was 52.17 mg/g which was higher than other samples. The result of frying indicated that prolonged heating process would increase the thermal oxidation. It was shown that oils blended with SO had good stability during deep frying. Therefore, blending oil with SO is considered as an economic approach to improve the oil oxidation stability.
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Guidi, Anthony J., Joseph A. Tworek, Daniel D. Mais, Rhona J. Souers, Barbara J. Blond, and Richard W. Brown. "Breast Specimen Processing and Reporting With an Emphasis on Margin Evaluation: A College of American Pathologists Survey of 866 Laboratories." Archives of Pathology & Laboratory Medicine 142, no. 4 (January 12, 2018): 496–506. http://dx.doi.org/10.5858/arpa.2016-0626-cp.
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Context.— The College of American Pathologists (CAP) developed protocols for reporting pathologic characteristics of breast cancer specimens, including margin status. The Society of Surgical Oncology (SSO) and the American Society for Radiation Oncology (ASTRO) published treatment guidelines regarding margins in patients with invasive cancer; and SSO, ASTRO, and the American Society of Clinical Oncology (ASCO) recently published guidelines for patients with ductal carcinoma in situ. Objective.— To assess current practices among pathologists with regard to the processing/reporting of breast specimens, assess compliance with CAP cancer protocols, and assess alignment with SSO/ASTRO and SSO/ASTRO/ASCO guidelines. Design.— A survey concerning breast specimen processing/reporting was distributed to pathologists enrolled in the CAP Performance Improvement Program in Surgical Pathology. Results.— Ninety-four percent (716 of 764 respondents) and 91% (699 of 769 respondents) define positive margins as “tumor on ink” for invasive cancer and ductal carcinoma in situ, respectively, in compliance with CAP cancer protocols and with SSO/ASTRO and SSO/ASTRO/ASCO guidelines. Of 791 respondents who provided details regarding methods for margin evaluation, 608 (77%) exclusively examine perpendicular margins, facilitating guideline compliance. However, 183 of 791 respondents (23%) examine en face margins in at least a subset of specimens, which may preclude guideline compliance in some cases. When separate cavity (shave) margins are examined, while 517 of 586 respondents (88%) ink these specimens, 69 of 586 (12%) do not, and this may also preclude guideline compliance in some cases. Conclusions.— A substantial proportion of survey participants report margin status for breast cancer specimens in a manner consistent with CAP cancer protocols, and in alignment with SSO/ASTRO and SSO/ASTRO/ASCO guidelines. However, there are opportunities for some laboratories to modify procedures in order to facilitate more complete adherence to guidelines.
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Krishnan, S., and K. Sathiyasekar. "A Novel Salp Swarm Optimization MPP Tracking Algorithm for the Solar Photovoltaic Systems under Partial Shading Conditions." Journal of Circuits, Systems and Computers 29, no. 01 (April 24, 2019): 2050017. http://dx.doi.org/10.1142/s0218126620500176.
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To extract the maximum solar power from the photovoltaic (PV) panel/array with the high conversion efficiency under partial shading condition (PSC), this paper discusses a new and an efficient maximum power point (MPP) tracking algorithm. The proposed algorithm is based on the bio-inspired salp swarm optimization (SSO), and the algorithm forecasts the global MPP (GMPP) with the fast convergence to GMPP and high tracking efficiency. The SSO algorithm thus reduces the computational burden as encountered in whale optimization algorithm (WOA), and gray wolf optimization (GWO) algorithm discussed in the various literatures. The modeling and simulation of the proposed SSO algorithm are done with the help of Matlab/Simulink software to validate the effectiveness to locate the MPP during PSCs. The simulation results prove that the proposed SSO algorithm exhibits a high PV power output with the tracking efficiency of more than 95% at the faster convergence rate to GMPP. The SSO algorithm is experimentally verified on the conventional boost converter under different shading conditions.
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Yang, Jing, Yong Sun, Ladier Fa, Shuhan Zhang, Zhihao Wang, and Limin Mei. "Mechanism and Mitigation Strategy of Sub-synchronous Oscillation Caused by Grid-connected DFIG with Series Compensation." Journal of Physics: Conference Series 2125, no. 1 (November 1, 2021): 012009. http://dx.doi.org/10.1088/1742-6596/2125/1/012009.
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Abstract Power systems are at risk of sub-synchronous oscillation (SSO) when connecting doubly-fed induction generator (DFIG)-based wind turbines to transmission lines with series compensation. This paper focuses on the mechanism and mitigation strategy of SSO. Firstly, the mechanism of SSO is studied from two aspects: induction generator effect (IGE) and sub-synchronous control interaction (SSCI). An equivalent circuit is developed to illustrate the negative resistance effect. Based on the result of the analysis, the SSO mitigation strategy using notch filter and virtual resistance control is proposed. In order to verify the result of analysis and the effectiveness of mitigation strategy, time-domain simulations are carried out based on PowerFactory DIgSILENT.
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He, Cheng Bing, Zhi Yong Wang, and Jian Shen. "Analysis of Subsynchronous Oscillation in a Multi Turbo-Generator Sets Power System Based on Electromechanical Wave Model." Applied Mechanics and Materials 50-51 (February 2011): 516–20. http://dx.doi.org/10.4028/www.scientific.net/amm.50-51.516.
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Electromechanical wave model is a new method in the research of generator-grid dynamic response of large scale electric power systems. Based on wave equations of elastic bearing transmit mechanical power and transmission line transmit magnetic power respectively, this paper built integrate electromechanical wave model of turbine-generator-grid with the example of No. 3 unit in Yimin Power Plant. With the help of electromechanical wave model, subsynchronous oscillation (SSO) example was given which indicated that the higher disturbance voltage, the bigger SSO amplitude; the larger damp, the smaller SSO amplitude, which will make the fluctuation become stable earlier. This conclusion has significant engineering value on reducing SSO amplitude of Yimin power plant.
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Seib, M. D., A. J. Booton, M. J. Scarborough, and D. R. Noguera. "Evaluation of acid-phase digestion as a pretreatment to enhance co-digestion of source separated organics and municipal sewage sludges." Water Science and Technology 80, no. 7 (October 1, 2019): 1257–65. http://dx.doi.org/10.2166/wst.2019.374.
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Abstract This work assessed if acid-phase digestion could improve volatile solids (VS) destruction and methane yield when co-digesting municipal sewage sludges (primary and waste activated sludge) and source separated organics (SSO). The SSO was made up of food waste and the organic fraction of municipal solid waste. Two laboratory-scale acid-phase digesters and three laboratory-scale methane-phase digesters were employed in order to determine the impacts of SSO co-digestion with municipal sludges both with and without acid-phase digestion as a pretreatment step. Reactors were operated at 35 °C using volatile solids loading rates of 34.2–44.1 g VS/LR-day for acid-phase digesters and 1.2–2.4 1 g VS/LR-day for methane-phase digesters. Solids retention times ranging from 1.2 to 1.5 day and 20.7 to 23.2 days were employed for acid-phase and methane-phase digesters, respectively. VS destruction ranged from 62% to 67%, with reactors receiving SSO achieving higher VS destruction. Results also show that reactors receiving SSO were able to handle organic loading increases of at least 39% without showing signs of overloading. Microbial community analysis revealed that SSO had a noticeable impact on acid-phase digestion with Megasphaera emerging as the most abundant genus.
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Gellert, George A., Crystal Delacerda, Lajja Patel, and Gabriel Maciaz. "Easing hospitalist electronic health record burden through clinical workstation single sign-on." Journal of Hospital Administration 9, no. 3 (June 24, 2020): 24. http://dx.doi.org/10.5430/jha.v9n3p24.
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Background: Computer workstation single sign-on (SSO) was implemented in 19 hospitals to reduce manual keyboard login and expedite access to the electronic health record (EHR) and clinical applications.Objective: To quantify hospitalists time liberated from EHR keyboard to focus on patient care, and estimate financial value of this time for hospitalists.Methods: Login duration prior to and after SSO implementation were compared in eight hospitals. Using national estimates of hospitalist hourly wage, dollar values of time liberated from keyboard were calculated, stratified by different levels of total EHR use.Results: Following SSO implementation, first of shift login decreased 5.3 seconds (15.3%), and reconnect duration decreased 20.4 seconds (69.9%). The volume of hospitalist EHR use among all physician end users comprises 70%-90% of all electronic documentation and clinical orders issued, yielding an annual range of 10,302 hours (or 858.5 12-hour shifts) to 13,245 hours (or 1,103.8 12-hour shifts) in hospitalist time liberated from keyboard for patient care, with recurrent annual value of $1,164,126 to $1,496,685.Conclusions: Hospitalists gained meaningful amounts of time for patient care from SSO implementation. This time accrued to substantial financial value. SSO eases the EHR burden of hospitalists, and facilities using hospitalists extensively should consider SSO implementation.
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Schmitz, Guido. "Privacy-preserving Web single sign-on: Formal security analysis and design." it - Information Technology 64, no. 1-2 (February 19, 2022): 43–48. http://dx.doi.org/10.1515/itit-2022-0003.
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Abstract Single sign-on (SSO) systems, such as OpenID and OAuth, allow Web sites to delegate user authentication to third parties, such as Facebook or Google. These systems provide a convenient mechanism for users to log in and ease the burden of user authentication for Web sites. Conversely, by integrating such SSO systems, they become a crucial part of the security of the modern Web. So far, it has been hard to prove if Web standards and protocols actually meet their security goals. SSO systems, in particular, need to satisfy strong security and privacy properties. In this thesis, we develop a new systematic approach to rigorously and formally analyze and verify such strong properties with the Web Infrastructure Model (WIM), the most comprehensive model of the Web infrastructure to date. Our analyses reveal severe vulnerabilities in SSO systems that lead to critical attacks against their security and privacy. We propose fixes and formally verify that our proposals are sufficient to establish security. Our analyses, however, also show that even Mozilla’s proposal for a privacy-preserving SSO system does not meet its unique privacy goal. To fill this gap, we use our novel approach to develop a new SSO system, SPRESSO, and formally prove that our system indeed enjoys strong security and privacy properties.
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Liu, Stanley Yung-Chuan, Douglas Sidell, Leh-Kiong Huon, and Carlos Torre. "“Split to Save”: Accessing Mandibular Lesions using Sagittal Split Osteotomy with Virtual Surgical Planning." Ear, Nose & Throat Journal 97, no. 3 (March 2018): 91–96. http://dx.doi.org/10.1177/014556131809700311.
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Large, benign intramandibular lesions are frequently removed by resection followed by extensive free tissue transfer or delayed bone grafting. We outline a protocol to remove benign mandibular lesions using sagittal split osteotomy (SSO) with virtual surgical planning (VSP) to mitigate risks involved with this effective, tissue-saving approach. Patients with benign mandibular lesions accessed by SSO with VSP during 2014 were included in this study. Computed tomographic data were imported into VSP software. Using VSP, the exact locations of mandibular lesions and the inferior alveolar nerve canal were delineated. SSO was designed virtually and provided surgeons exact measurements to gain access to lesions and to avoid vital structures intraoperatively. SSO with VSP preserved the cortical mandibular bone and the inferior alveolar neurovascular bundle in 3 patients with benign mandibular lesions. Twelve months after surgery, no patient had pathologic fracture, prolonged paresthesia (except for the patient who required inferior alveolar nerve resection), or malocclusion. No patient required bone grafting. There were no functional or aesthetic jaw deficits. SSO is an effective approach to access intramandibular lesions. The technique does not result in loss of mandibular bone, and patients return to full masticatory function compared with those who require resection and reconstruction. VSP may mitigate technical challenges associated with SSO.
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Fox, Sarah S., Li-Ching Huang, W. Borden Hooks, John P. Fischer, and William W. Hope. "An Evaluation of Fascial Closure Techniques in Open Ventral Hernia Repair: Practice Patterns and Short-Term Outcomes." American Surgeon 85, no. 11 (November 2019): 1213–18. http://dx.doi.org/10.1177/000313481908501125.
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The best method for fascial closure during hernia repair remains unknown. This study evaluates the impact of fascial closure techniques on short-term outcomes. All patients undergoing open ventral hernia repair were queried using the Americas Hernia Society Quality Collaborative database. Analysis was stratified by suture type (absorbable and permanent) and technique (figure-of-eight, running, and interrupted). Outcome measures included SSI, surgical site occurrence (SSO), SSO requiring intervention, recurrence rate, and quality of life. Descriptive statistics and logistic regression were used. The study included 6544 patients. Two-thirds of surgeons closed fascia during ventral hernia repair with absorbable suture and one-third with permanent suture. In the absorbable group, 17 per cent used figure-of-eight, 46 per cent running, and 4 per cent interrupted suture. In the permanent group, 13 per cent used figure-of-eight, 8 per cent running, and 11 per cent interrupted suture. There was no significant association between SSO and closure technique ( P = 0.2). However, SSO and suture type were significant ( P < 0.001) with the odds of SSO for closure with absorbable suture being 62 per cent higher than the odds of permanent. Fascial closure technique and suture type had no significant association ( P > 0.5) with SSI, SSO requiring intervention, hernia recurrence rate, or HerQLes or NIH PROMIS 3a scores at 30 days or 6 months. Fascial closure technique and suture material do not have a major impact on outcomes in ventral hernia repair. Despite a significantly higher rate of SSO for absorbable sutures than permanent, this did not increase the rate of interventions.
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Chen, Qin Lei, Chun Lin Guo, Han Chen, Jun Chen, Ya Nan Li, and Wei Yong Jiang. "Design of HVDC Supplementary Subsynchronous Damping Controller." Advanced Materials Research 960-961 (June 2014): 1017–21. http://dx.doi.org/10.4028/www.scientific.net/amr.960-961.1017.
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Supplementary subsynchronous damping controller (SSDC) is an effective countermeasure to damp the subsynchronous oscillation (SSO) caused by HVDC. On the basis of analyzing the mechanism of inducing SSO by HVDC, the principle of damping SSO by SSDC and SSDC design methods are expounded. A SSDC is designed for a practical power plant in China, and the correctness and validity of the SSDC control strategies are proved with time domain electromagnetic simulation results.
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Xing, Zhen-xing, Jin-Sheng Liu, Zhuang Huang, Gong-Jin Cheng, He Yang, and Xiang-Xin Xue. "Research on the Enhanced Preparation Process for Pellets with Sea Sand Vanadium Titanomagnetite Smelting in the Blast Furnace." Journal of Physics: Conference Series 2300, no. 1 (June 1, 2022): 012010. http://dx.doi.org/10.1088/1742-6596/2300/1/012010.
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Abstract The sea sand vanadium titanomagnetite has coarse particles, small specific surface area, and great difficulty in agglomeration process. It is difficult for ironmaking enterprises to use it as an ironmaking raw material in large quantities. In this paper, the different methods were adopted to optimize the pellet performance indexes of sea sand vanadium titanomagnetite in order to increase the usage of SSO. The effects of adding ordinary iron ore powder, vanadia-titania fine powder and ball milling pretreatment of SSO on the preparation process of pellet were studied, and the performance indexes of pellet were analyzed. The results showed that the proportion of unground SSO in pellets was up to 40%. The experimental results provided some reference methods to improve the dosage of SSO.
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Albaqami, Jawaher J. "Phytochemical Composition, In Vitro Antioxidant, and Anticancer Activities of Cold Pressed Oil from Sesame (Sesamum indicum L.) from the Kingdom of Saudi Arabia." Journal of Biobased Materials and Bioenergy 18, no. 3 (May 1, 2024): 515–22. http://dx.doi.org/10.1166/jbmb.2024.2398.
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Sesame seed oil (SSO) has long been used in many complementary and alternative medicine systems to treat a variety of maladies and ailments. SSO was obtained by cold pressing Sesamum indicum L. (sesame) seeds. Sesamum indicum L. (sesame) oil’s chemical constituents identified with GC-MS. Using the DDPH and MTT assays, respectively, the antioxidant and anticancer activities were investigated. phytosterols, (β-sitosterol, Campesterol, and Stigmasterol), lignans such as sesamin, fatty acids such as Oleic Acid, Esters of fatty acid, such as Hexadecanoic acid, methyl ester, Linoleic acid ethyl ester, flavonoids such as 3′,4′,7Trimethylquercetin, 6,8-di-c-a-glucosylluteolin, the carboxylic ester glycidyl oleate, alcoholic compounds, 1-heptatriacotanol, were the active chemical compounds detected in Sesamum indicum L. (sesame) oil. SSO has a high tocopherol profile. SSO showed antioxidant properties with DDPH radical scavenging of 63.1% relative to standard beta hydroxyl butyrate (BHT). The anticancer effects of SSO against Ovarian carcinoma (A-2780) cell line with IC50 = 1.68 ± 0.3 μg/mL. Sesamum indicum L. (sesame) oil’s chemical constituents identified with GC-MS showed antioxidant and anticancer properties.
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Almufti, Saman. "The novel Social Spider Optimization Algorithm: Overview, Modifications, and Applications." ICONTECH INTERNATIONAL JOURNAL 5, no. 2 (June 28, 2021): 32–51. http://dx.doi.org/10.46291/icontechvol5iss2pp32-51.
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The continues in real-world problems increasing complexity motivated computer scientists and researchers to search for more-efficient problem-solving strategies. Generally natural Inspired, Bio Inspired, Metaheuristics based on evolutionary computation and swarm intelligence algorithms have been frequently used for solving complex, real-world optimization problems because of their ability to adjust to variety of conditions. This paper present a swarm based algorithm that is based on the cooperative behaviors between social spider, it called Social Spider Optimization (SSO) algorithm. In SSO, search agents characterize a set of spiders which together move according to a biological behavior in colony. During the past years after SSO introduction, many modifications has improved the performance of the algorithm and has been applied in several fields. In this paper, the improvements, and applications of the SSO are reviewed.
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Arjuna, Fatkurahman. "GAMBARAN KOMPONEN FISIK PREDOMINAN (KOMPONEN FISIK DASAR) PELATIH SSO REAL MADRID FIK UNY." MEDIKORA 17, no. 2 (December 30, 2019): 102–12. http://dx.doi.org/10.21831/medikora.v17i2.29181.
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Penelitian ini bertujuan untuk mengetahui gambaran komponen fisik predominan (komponen fisik dasar) pelatih SSO Real Madrid FC FIK UNY 2016. Adapun komponen fisik predominan (komponen fisik dasar) yang diukur meliputi kekuatan, daya tahan otot, speed, kelincahan, kelentukan, power dan daya tahan dasar (kardiovaskuler). Desain yang digunakan dalam penelitian ini adalah penelitian survai, dengan teknik tes. Subjek penelitian ini adalah pelatih SSO Real Madrid FC FIK UNY tahun 2016 sebanyak 11 orang. Instrumen yang digunakan untuk kekuatan otot punggung dan tungkai dalah leg and back dynamometer. Daya tahan otot perut diukur dengan tes sit up, daya tahan otot lengan dan bahu dengan tes push up, daya tahan otot tungkai dengan tes squat jump. Speed dengan tes lari 30 meter. Kelincahan dengan tes beam side step. Kelentukan dengan alat flexometer. Power otot tungkai dengan tes vertical jumps. Daya tahan umum (kardiovascular) dengan multistage test. Hasil penelitian menunjukkan bahwa pelatih SSO Real Madrid FC FIK UNY 2016 secara umum memiliki kekuatan otot punggung yang baik sekali dengan rata-rata 138,7 kg. Pengukuran kekuatan otot tungkai menunjukkan rata-rata 170,9 kg yang artinya mayoritas pelatih memiliki kekuatan otot tungkai yang cukup dan kurang. Pelatih SSO Real Madrid FC secara umum memiliki daya tahan otot perut yang kurang dengan rata-rata sit up 45,5 kali dan daya tahan otot lengan dan bahu yang baik dan cukup dengan rata-rata push up 20,9 kali. Sedangkan daya tahan otot tungkai secara umum masuk kategori kurang dengan rata-rata squat jump 16,4 kali. Pelatih SSO Real Madrid FC memiliki speed yang kurang dengan rata-rata 4,826 detik. Hasil pengukuran menunjukkan seluruh pelatih memiliki kelincahan yang kurang dengan rata-rata 27,4 detik. Hasil penelitian menunjukkan bahwa seluruh pelatih memiliki kelentukan yang sempurna dengan rata-rata 37,9 cm. Hasil pengukuran power menunjukkan rata-rata vertical jump 45,8 cm, yang artinya pelatih SSO Real Madrid FC memiliki power yang cukup. Sementara hasil penelitian menunjukkan bahwa pelatih SSO Real Madrid FC secara umum memiliki tingkat daya tahan umum (kardiovaskuler) yang kurang dengan rata-rata 33,67 ml.kg/menit. DESCRIPTION OF PREDOMINANT PHYSICAL COMPONENTS (BASIC PHYSICAL COMPONENTS) REAL MADRID SSO TRAINER AbstractThis study aims to determine the description of predominant physical components (basic physical components) SSO coach of Real Madrid FC FIK UNY 2016. The predominant physical components (basic physical components) measured include strength, muscular endurance, speed, agility, flexibility, power and power basic (cardiovascular) resistance. The design used in this study was survey research, with test techniques. The subjects of this study were 11 SSO Real Madrid FC FIK UNY trainers. The instrument used for back and leg muscle strength is leg and back dynamometer. Abdominal muscle endurance was measured by sit-up tests, arm and shoulder muscular endurance by push-up tests, leg endurance by squat jump tests. Speed with a 30 meter test run. Agility with beam side step tests. Make use of the flexometer. Leg muscle power with a vertical jump test. General endurance (cardiovascular) with a multistage test. The results showed that the 2016 Real Madrid FC FIK UNY SSO coach in general had excellent back muscle strength with an average of 138.7 kg. Measurement of leg muscle strength shows an average of 170.9 kg, which means the majority of trainers have sufficient and less leg muscle strength. SSO coaches Real Madrid FC in general have less abdominal endurance with an average sit-up of 45.5 times and good endurance of arm and shoulder muscles and enough with an average push-up of 20.9 times. While leg muscle endurance is generally in the category of less with an average squat jump of 16.4 times. SSO coaches Real Madrid FC have less speed with an average of 4.826 seconds. The measurement results show that all trainers have less agility with an average of 27.4 seconds. The results showed that all trainers had perfect flexibility with an average of 37.9 cm. Power measurement results show an average vertical jump of 45.8 cm, which means SSO Real Madrid FC coaches have enough power. While the results of the study show that SSO coaches Real Madrid FC in general have a general level of endurance (cardiovascular) which is less with an average of 33.67 ml.kg/min.
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Altuntaş, Ozan Muzaffer, Furkan Özer, Oğuz Kuşçu, and Nilda Süslü. "Does Submandibular Gland Sacrificing Neck Dissection Decrease Salivary Output and Quality of Life?" ORL 83, no. 5 (2021): 341–46. http://dx.doi.org/10.1159/000514134.
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<b><i>Purpose:</i></b> Our study aimed to quantify the impact of submandibular gland (SMG) resection during Level I neck dissection (ND) on stimulated salivary output (SSO) and xerostomia-related quality of life in patients with head and neck cancer (HNC). <b><i>Methods:</i></b> A retrospective cohort was formed from 32 patients that underwent unilateral or bilateral Level I ND and a control group of 23 patients that had level II–IV ND. SSO (Saxon test) and University of Washington Quality of Life survey results for both groups were compared. <b><i>Results:</i></b> Mean SSO was 3.41 g in the SMG resection group and 3.86 g in the control group, with no significant statistical difference. There was no difference in mean SSO between patients with 2 SMGs, a single remaining SMG, or no glands. The mean SSO of SMG resection cases with a history of adjuvant RT was 2.61 g which was below the xerostomia threshold for the Saxon test (2.75 g) and control group patients with RT had a significantly higher mean SSO (4.07 g). The lowest UW-QoL saliva domain score average (53.8) was in the SMG-resected, RT-positive group. <b><i>Conclusion:</i></b> Results indicate unilateral or bilateral resection of SMG does not reduce SSO to a significant extent. Adjuvant radiotherapy and SMG resection are additive risk factors for xerostomia and the related loss in quality of life. SMG sparing may be necessary in HNC patients with higher risk for the need of adjuvant radiation.
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Shin, Kwang-Seup, and Jeung-Hee Lee. "Melting, Crystallization, and In Vitro Digestion Properties of Fats Containing Stearoyl-Rich Triacylglycerols." Molecules 27, no. 1 (December 29, 2021): 191. http://dx.doi.org/10.3390/molecules27010191.
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Fats containing the stearoyl-rich triacylglycerols (TAGs) of 1,2-distearoyl-3-oleoylglycerol (SSO) and 1,3-dioleoyl-2-stearoylglycerol (OSO) were synthesized via the lipase-catalyzed acidolysis of tristearin (SSS)-rich fat and oleic acids, followed by solvent fractionation. Their physicochemical properties and in vitro digestibilities were compared. The SSS-, SSO-, and OSO-rich fats comprised 81.6%, 52.9%, and 33.1% stearic acid, respectively, whereas oleic acid comprised 2.9%, 37.5%, and 56.2%, respectively. The SSS-, SSO-, and OSO-rich fats contained the TAGs of SaSaSa (100.00%), SaSaMo (86.98%), and MoSaMo (67.12%), respectively, and the major TAGs were SSS, SSO, and OSO, respectively. Melting and crystallization temperatures were higher and fat crystals were larger and densely packed in the descending order of SSS-, SSO and OSO-rich fats. Both in vitro multi-step digestion and pH-stat digestion were more rapid for OSO- than SSO-rich fat. Oleic acid was digested faster than stearic acid during the initial digestion, then the rate decreased, whereas that of stearic acid increased over prolonged digestion. Fats that were richer in stearoyl at the sn-1,3 position of TAG melted and crystallized at higher temperatures, had a densely packed microstructure of large fat crystals and were poorly digested. Stearic acid imparts the essential physical attributes of melting and crystallization in solid fats, and the low digestible stearoyl-rich fat would be a viable substitute for trans fatty acids in food lipid industry.