786 research outputs found
Model Predictive BESS Control for Demand Charge Management and PV-Utilization Improvement
Adoption of battery energy storage systems for behind-the-meters application
offers valuable benefits for demand charge management as well as increasing
PV-utilization. The key point is that while the benefit/cost ratio for a single
application may not be favorable for economic benefits of storage systems,
stacked services can provide multiple revenue streams for the same investment.
Under this framework, we propose a model predictive controller to reduce demand
charge cost and enhance PV-utilization level simultaneously. Different load
patterns have been considered in this study and results are compared to the
conventional rule-based controller. The results verified that the proposed
controller provides satisfactory performance by improving the PV-utilization
rate between 60% to 80% without significant changes in demand charge (DC)
saving. Furthermore, our results suggest that batteries can be used for
stacking multiple services to improve their benefits. Quantitative analysis for
PV-utilization as a function of battery size and prediction time window has
also been carried out.Comment: Accepted in: Conference on Innovative Smart Grid Technology (ISGT),
Washington, DC, 201
Dynamic Compaction in Assalouyeh, Iran
Dynamic compaction used as a soil improvement method for treatment of filled material in sea in Assalouyeh, Iran. Land reclamation by filling soil performed up to depth 14m and dynamic compaction used for reduction of liquefaction potential and the settlements due to static loadings. The compaction pattern and the other parameters like applied energy, compaction phases and rest periods designed in term of the characteristics of the soil to be treated and filling material deep. Final compaction pattern revised according to the results of the compaction on trial areas. Extensive trial compactions performed to optimize the compaction process with respect to the required energy for achieving specified densification criterion. Dynamic compaction carried out in two and three passes. Using 16 patterns (combination of weight of pounder, falling height and the arrangement of the impact points) the 90 hectares area improved in 12 months. For testing of efficiency of dynamic compaction geotechnical site investigation tests performed before and after compaction. The desired tests were measurement of induced settlement, boring and Standard Penetration test, Plate load test and Field density test. The results of tests showed that the dynamic compaction was useful to increase bearing capacity up to 3 kg/cm2 for shallow foundations and reduced mostly liquefaction potential
Efficient design and evaluation of countermeasures against fault attacks using formal verification
This paper presents a formal verification framework and tool that evaluates the robustness of software countermeasures against fault-injection attacks. By modeling reference assembly code and its protected variant as automata, the framework can generate a set of equations for an SMT solver, the solutions of which represent possible attack paths. Using the tool we developed, we evaluated the robustness of state-of-the-art countermeasures against fault injection attacks. Based on insights gathered from this evaluation, we analyze any remaining weaknesses and propose applications of these countermeasures that are more robust
Effects of the polyunsaturated fatty acids, EPA and DHA, on hematological malignancies: a systematic review
Omega-3 polyunsaturated fatty acids (PUFAs) have well established anti-cancer properties. Eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) are among this biologically active family of macromolecules for which various anti-cancer effects have been explained. These PUFAs have a high safety profile and can induce apoptosis and inhibit growth of cancer cells bothin vitroandin vivo, following a partially selective manner. They also increase the efficacy of chemotherapeutic agents by increasing the sensitivity of different cell lines to specific anti-neoplastic drugs. Various mechanisms have been proposed for the anti-cancer effects of these omega-3 PUFAs; however, the exact mechanisms still remain unknown. While numerous studies have investigated the effects of DHA and EPA on solid tumors and the responsible mechanisms, there is no consensus regarding the effects and mechanisms of action of these two FAs in hematological malignancies. Here, we performed a systematic review of the beneficial effects of EPA and DHA on hematological cell lines as well as the findings of relatedin vivostudies and clinical trials. We summarize the key underlying mechanisms and the therapeutic potential of these PUFAs in the treatment of hematological cancers. Differential expression of apoptosis-regulating genes and Glutathione peroxidase 4 (Gp-x4), varying abilities of different cancerous and healthy cells to metabolize EPA into its more active metabolites and to uptake PUFAS are among the major factors that determine the sensitivity of cells to DHA and EPA. Considering the abundance of data on the safety of these FAs and their proven anti-cancer effects in hematological cell lines and the lack of related human studies, further research is warranted to find ways of exploiting the anticancer effects of DHA and EPA in clinical settings both in isolation and in combination with other therapeutic regimens
Flood hazard zoning using geographic information system (GIS) and HEC-RAS model (Case study: Rasht City)
Rivers are important water resources for human life, but sometimes cause irreparable damages. The flood plains
are fertile terrains which are endangered by flood. Flood hazard mapping is one of the basic methods in flood
fighting. In order to decline flood damages, the simulation of the hydraulic behavior of the rivers during flood
occurrence is very important. In this study, areas that are flooded were zoned along Siahrood and Goharrood
rivers (Rasht City, northern Iran). The rivers bed and banks terrains of Goharrood and Siahrood were simulated
using HEC-GeoRAS extension and digital map (scale: 1000). Pick discharges with different return periods were
estimated using stochastic analysis. HEC-RAS software and geographical information system were applied for
simulating the hydraulic behavior of the rivers and providing flood zoning map. The GIS was an efficient tool for
data-processing and mapping stages. Finally, the flood zones associated with 2, 10, 25, 50, 100 and 200 years
return periods were mapped and necessary analysis were conducted during the present research. The results
showed that some parts of Rasht City (river bank terrains) are endangered flood hazard
Identifying the Dimensions & Evaluation of Path Model in Physical Education Course in Primary School
Physical education and sports are the integral part of education in adolescence and is a useful tool that provides opportunities for real life experiences. The purpose of this study was to assess the extent of explaining and modeling method is studying physical education in primary schools that was performed by the descriptive survey method. The population sample consisted of 100 elementary school physical education teachers in IslamShahr on 1391-1392. Research tool was researcher made questionnaire with 30 closed questions. Cronbach's alpha reliability test (Course offered in the game, 0/865, to evaluate 0/912, to compete0.61, class management 60/0 and teaching methods 0/891) was used, Which has been named and classified according to the exploratory analysis. The result showed that there is a meaningful correlation between teaching physical science factors in terms of game, teaching methods evaluation and competitions. In teaching physical science teaching by using game, teaching and completion were factors that teachers pay more attention to them, but the teacher’s class management methods has meaningful relation to students’ completion. So we can suggest our managing suggestion in this regards
Domestic violence and suicide attempt among married women: A case‐control study
The aim of this study was to investigate the impact of domestic violence‐related factors on suicide attempt in married women. Suicide is a global public health concern that poses significant burden on individuals, families and communities. There is limited research on factors predicting suicide attempt in women. A retrospective case‐control design was adopted. Using a convenience sampling method, 610 participants, admitted to a teaching referral hospital in Northwest of XXX, were recruited to the study and assigned to case or control groups based on whether or not they had attempted suicide. The participants in two groups were matched in the terms of important demographic characteristics. Domestic violence‐related factors were considered as independent variables and suicide attempt as dependent variable. Descriptive statistics, simple and multivariate logistic regression analysis were used to analyze the data. Odd ratios (OR) of domestic violence related factors were compared between the groups. We used STROBE checklist as an EQUATOR in this study. The mean age of participants in the case and control groups was 28.4 years and 29.45 years, respectively. The infidelity was the strongest predictor of suicide attempt in women (OR 44.57, 95%CI 6.08‐326. 63, p<0.001), followed by being threatened to physical assault by husband (OR 37.01, 95%CI 11.54‐118.67, p<0.001), jealousy of husband (OR 23.46, 95%CI 11.63‐47.30, p<0.001), and previous attempts to divorce (OR 16.55, 95%CI 5.91‐46.31, p<0.001). Suicide attempt was significantly lower in women who reported a sense of peace in life or lived with their mother or father‐in‐law (p<0.001). To reduce the risk of suicide in women, violence against women should be condemned and appropriate prevention measures be taken by health professionals. Recognizing risk, assessment and referral of victims of domestic violence should be an integral part of health care systems.N/
Caregiver burden and the associated factors in the family caregivers of patients with schizophrenia
A Decade of Shared Tasks in Digital Text Forensics at PAN
[EN] Digital text forensics aims at examining the originality and
credibility of information in electronic documents and, in this regard, to extract and analyze information about the authors of these documents. The research field has been substantially developed during the last decade. PAN is a series of shared tasks that started in 2009 and significantly contributed to attract the attention of the research community in well-defined digital text forensics tasks. Several benchmark datasets have been developed to assess the state-of-the-art performance in a wide range of tasks. In this paper, we present the evolution of both the examined tasks and the developed datasets during the last decade. We also briefly introduce the upcoming PAN 2019 shared tasks.We are indebted to many colleagues and friends who contributed greatly to PAN's tasks: Maik Anderka, Shlomo Argamon, Alberto Barrón-Cedeño, Fabio Celli, Fabio Crestani, Walter Daelemans, Andreas Eiselt, Tim Gollub,
Parth Gupta, Matthias Hagen, Teresa Holfeld, Patrick Juola, Giacomo Inches, Mike
Kestemont, Moshe Koppel, Manuel Montes-y-Gómez, Aurelio Lopez-Lopez, Francisco
Rangel, Miguel Angel Sánchez-Pérez, Günther Specht, Michael Tschuggnall, and Ben
Verhoeven. Our special thanks go to PAN¿s sponsors throughout the years and not
least to the hundreds of participants.Potthast, M.; Rosso, P.; Stamatatos, E.; Stein, B. (2019). A Decade of Shared Tasks in Digital Text Forensics at PAN. Lecture Notes in Computer Science. 11438:291-300. https://doi.org/10.1007/978-3-030-15719-7_39S2913001143
Effects of zinc supplementation on serum adiponectin concentration and glycemic control in patients with type 2 diabetes
Background: Previous studies have suggested that zinc is involved in insulin homeostasis. Adiponectin is a well-known adipokine with anti-diabetic, anti-atherogenic, and anti-inflammatory properties. The aim of this study was to investigate the effect of zinc supplementation on glycemic control, and the potential mediating role of adiponectin, in patients with type 2 diabetes. Methods: In this randomized double-blind placebo-controlled clinical trial, 60 patients with diabetes, 30-60 years, were randomized to receive either 30 mg/d zinc (as zinc gluconate) or placebo for 12 weeks. Circulating levels of adiponectin, zinc, glucose homeostasis parameters, and lipid profiles, as well as anthropometric parameters and dietary intakes, were assessed. Results: About 53.3 of the patients had zinc insufficiency at baseline. Serum zinc levels improved significantly in the intervention than control group following 12 weeks supplementation (P < 0.001). Adiponectin (1.23 ± 2.23 μg/ml, P = 0.006) and insulin (3.6 ± 4.66 μIU/ml, P = 0.001) levels increased significantly compared to baseline in the zinc group; but this change was not significant compared with the control group. Following supplementation, there were no significant differences in glycemic control and anthropometric parameters between the two groups. Serum HDL levels increased significantly in the zinc (5.37 ± 14.8 mg/dl) compared to control (-1.53 ± 6.9 mg/dl) group following supplementation (P = 0.039). Conclusion: Despite a significant increase in serum zinc level, no improvement was observed in glycemic control, following 12 weeks supplementation with 30 mg/d zinc (as zinc gluconate). Zinc supplementation restored adiponectin concentrations partly within the intervention group, and increased HDL levels compared to the control group. The current findings did not support improvement in glucose homeostasis following zinc supplementation in patients with type 2 diabetes under the present study design. © 2019 Elsevier Gmb
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