Output Day Research Articles

Energy storage peak-shaving demand prediction based on an improved neural network with hidden layers

Abstract The result shows that the BP neural network has a very low convergent speed for load prediction, which leads to local optimization. This paper presents a modified GA for the optimization of the threshold value, the initial weight, and the addition of the smoothing coefficient. In addition, it improves the BP neural network’s adaptive learning speed and further improves the efficiency of the search. The proposed model is characterized by high convergent speed and global space retrieval capability. To validate the validity of the modified GA-BP model, the prediction of power load in some regions is made. Compared with the BP neural network forecast algorithm, this method has better performance in terms of prediction accuracy and takes less time in terms of prediction time than the BP neural network. In parallel, the realization of multiple sources of electricity from wind, solar, and heat storage is an important way to deal with large-scale new grid connections. Starting from an improvement in the efficiency of wind and PV generation, it is also possible to build a joint optimization scheduling model for wind, solar, and heat storage. The purpose of taking the minimum net load fluctuation is for optimization. Taking the typical output day of user scenarios as the optimization scenario, the scheduling strategies of wind power, PV, thermal units, and energy storage systems are introduced and simulated on the platform. It is proved that the proposed model can decrease the reduction ratio and the peak and valley load.

Retromuscular drain output at removal does not influence adverse outcome rate in open ventral hernia repairs.

Retromuscular drains are commonly placed during retromuscular hernia repair (RHR) to decrease postoperative wound complications and help mesh in-growth. Drains are traditionally removed when output is low but the relationship between drain output at the time of removal and postoperative complications has yet to be delineated. This study aimed to investigate outcomes of RHR patients with drain removal at either high or low output volume. An institutional review board-approved retrospective chart review evaluated adult patients undergoing open RHR with retromuscular drain placement between 2013 and 2022 at a single academic medical center. Patients were stratified into low output drainage (LOD, < 50mL/day) or high output drainage (HOD, ≥ 50mL/day) groups based on volume on the day of drain removal. We identified 336 patients meeting inclusion criteria: 58% LOD (n = 195) and 42% HOD (n = 141). Demographics and risk factors pertaining to hernia complexity were similar between cohorts. Low-drain output at the time of removal was associated with a significantly longer drain duration (6.3 ± 4.5 vs. 4.4 ± 1.6days, p < 0.001) and postoperative hospital stay (5.9 ± 3.6 vs. 4.8 ± 2.8days, p < 0.001). With a 97% 30-day follow-up, incidence of surgical site occurrence (SSO) was not statistically different between groups (29.2% LOD, 26.2% HOD, p = 0.63). Surgical site infection and SSO requiring procedural intervention was also not statistically significant between cohort. At 1-year follow-up, hernia recurrence rates were the same between groups (4.2% LOD, 1.4% HOD, p = 0.25). Following open ventral hernia repair with retromuscular mesh placement, the rate of postoperative wound complications was not statistically different based on volume of drain output day of removal. These results suggest that removing drains earlier despite higher output is safe and has no effect on short- or long-term hernia outcomes.

Safety and efficacy of a urine alkalinization protocol developed for high-dose methotrexate patients during intravenous bicarbonate shortage.

Urinary alkalinization with intravenous sodium bicarbonate is standard during high-dose methotrexate administration. Due to a national intravenous sodium bicarbonate shortage, a urinary alkalinization protocol involving hyperhydration with intravenous fluids, oral bicarbonate, and intravenous or oral acetazolamide was utilized from 10 April to 30 May 2017 ("shortage protocol"). This study compared outcomes between protocols. A single-center, retrospective chart review was conducted for adults who received methotrexate ≥500 mg/m2 on ≥ two occasions, at least once during each protocol, between 19 February and 19 July 2017. Eighteen patients (50% male), median age 65 years, received 76 total high-dose methotrexate cycles. Shortage protocol was used in 37 cycles (48.7%). Mean time to methotrexate clearance did not differ between groups (p = ns). Mean time to urinary alkalinization and duration of hospitalization were not statistically different (p = 0.49 and 0.23, respectively). Average total bicarbonate administered per 24 hours was higher in standard protocol (p < 0.05), but hydration rates were similar (p = 0.73). Creatinine clearance and urine output on days 1 and 2 post-high-dose methotrexate did not significantly differ (creatinine clearance day 1, p = 0.27; creatinine clearance day 2, p = 0.55; urine output day 1, p = 0.62; urine output day 2, p = 0.60). Interruptions in alkalinization were significantly higher during shortage (0.41 ± 0.75 instances of urine pH < 7 during standard vs. 1.3 ± 1.7 under shortage, p < 0.05).

Using quilting sutures in decreasing seroma formation after managing large ventral hernias: a comparative study

The aim of this study was to evaluate using quilting sutures in a prospective randomized controlled manner the decrease in the incidence of seroma formation among patients subjected to ventral hernia repair. The study was a prospective randomized controlled study. 370 patients with large ventral hernias were randomly distributed among two groups. Group A (control group) included 180 patients in whom the repair was done without quilting sutures. Group B (quilting group) included 190 patients, all performed with quilting. Method of dissection was unified as far as possible. All cases had an attached closed suction drain that was removed after two successive days of output ≤ 50cc. The output of the suction drain was recorded; accumulation of clinically detected seroma after 1, 2 and 4weeks of removal of the drain was monitored. There was no statistical difference between both groups as regards the demographic data and the hernia characteristics. There was significantly smaller amount of output of the drains in every day of the first five postoperative days as well as the total amount of the output before drain removal in favor of the quilting group. Drains were removed earlier in group B. The incidence of clinically detected seroma was less in group B as well. Quilting sutures is an effective and easy technique to reduce post-ventral hernia seroma accumulation.

PS 11-25 PSYCHO-EMOTIONAL STRESS AND VARIOUS FORMS OF ARTERIAL HYPERTENSION IN YOUNG REPRESENTATIVES OF DANGEROUS PROFESSION

Objective: Estimation features of circadian blood pressure (BP) profile in young men employed in stress-associated field work of law enforcement. Design and Method: A total of 132 young men, exposed to different severity of JS in type of operational activity (OA) of experience for 1 to 5 years were surveyed. Control group was formed of persons, whose daily work is not related with OA. Circadian monitoring (CM) BP was conducted on different days of week, comparing results of the office and CMBP determining. Results: It was revealed that presence of different forms of stress-induced AH - stable, isolated office and hidden ones were significantly more often among individuals were experienced mild and expressed stress-loads compared to control group. Frequency of occurrence of these three forms of the AH under influence of mild stress load was 21.8%, 20.3% and 14.2% compared to 10.0%, 13.3% and 6.% in control group. Among persons, exposed to expressed stress loads, these differences were higher. Most significant violations identified by time indices of increasing BP day and night, as well as the speed of morning rise BP. In output day, violations of CMBP leveled, that confirms the stressful nature of diagnosed AH. Conclusions: The findings suggest that even not very prolonged exposure to occupational loads is capable of causing disturbances CV activity at young age. It is proposed the use of CMBP during medical examinations of young men, exposed to the JS, in order to carry out differential diagnosis of various forms of stressful AH in a work time. This can be useful for more efficient formation of risk groups among the young contingent and further conduct of individualized prevention programs in the workplace.

The Effects of Processing Instruction with and without Output: Acquisition of the Spanish Subjunctive in Three Conjunctional Phrases

This study examines the effects of processing instruction (PI) alone versus PI and output (O) on the acquisition of three conjunctional and infinitival phrases in Spanish. Seventy intermediate and advanced-intermediate high school participants received: 1) PI on three consecutive days (PI + PI + PI); 2) PI for two days and meaning-based output practice on the third (PI + PI + O); 3) PI on the first and third days, and output on the second (PI + O + PI); or 4) PI one day, followed by two days of output (PI + O + O). Results of a pre-test and two post-tests demonstrated positive effects from PI in both interpretation and production abilities. The provision of output generally did not enhance or hinder the effects of PI, except when more days were devoted to output than to PI. When students dedicated more time to output-oriented class activities than they did to PI, the interpretation results were significantly lower.

Effects of Natural Dust on the Performance of PV Panels in Bangladesh

Energy is considered a prime agent in the generation of wealth and a significant factor in economic development. Limited fossil resources and environmental problems associated with them have emphasized the need for new sustainable energy supply options that use renewable energies. Among available technologies for energy production from solar source, photovoltaic system could give a significant contribution to develop a more sustainable energy system. Solar Panel has its wide use starting from a simple 5W diode lamp to a few kW ac drives. A solar panel with a battery and a charge controller and other auxiliary devices like dc to ac converters constitute a Solar Home System (SHS).Solar home system (SHS) is becoming popular day by day and even poor households are now becoming interested to purchase solar home system due to its various advantages. Solar home (SHS) have a major problem that is low efficiency. It also decreases output day by day because of improper maintenances, effect of dust and shadow. Accumulation of dust on solar panel of solar photovoltaic (PV) system is a natural process. It was found from the study that the accumulated dust on the surface of photovoltaic solar panel can reduce the systems efficiency by up to 35% in one month .In this paper we show that the effect of dust accumulation on the solar panel naturally and how it is possible to overcome this problem.