System In Order Research Articles

Data Acquisition System for a Hydroelectric Turbine with Deformable Blades

The scientific paper proposes a remote data transmission and acquisition system, for the analysis of the electrical parameters of a portable hydroelectric turbine with deformable blades placed on the stream. The major objective proposed by the authors is to monitor the transformation of the kinetic energy of water into electricity. Due to the impossibility of directly measuring the turbine elements as a whole, remote data transmission was chosen. This information is collected from the generator of the hydroelectric turbine through transducer elements into digital signals, is encoded and transmitted wirelessly to the receiver located on the shore, decoded, and then processed in real time and displayed on the monitor screen of a computer system in order to make decisions when the situation requires it. Data transmission is carried out in both directions (half duplex) through an efficient request/response communication protocol. Considering that the turbine is located in a hard-to-reach place, on the river, it was imposed to supply with reserve electric energy, autonomous from batteries, for the electronic part that is responsible for acquiring data from the hydroelectric generator. In this way, the monitoring circuit works permanently regardless of the turbine’s operating mode: normal or fault. The authors also present in detail the research methodology, the research results, the final conclusions resulting from the experimental data as well as the original contributions made through this applied research.

Not Your Typical Oriental Carpet

This article examines contemporary Turkish German artist Nevin Aladağ’s carpet collages Wind (2019) and Skylight Spring (2021) in relation to the iconic window designs of American Midwestern architect Frank Lloyd Wright. By cutting up and conjoining pieces of distinctly patterned carpets from around the world, Aladağ plays with the trope of the Oriental carpet and Orientalism’s hierarchical ordering system. Her collagistic compositions, which incorporate stylistic elements of Wright’s design practice, link disparate patterns, times, and places. Building on Wright’s own understanding of windows as light screens that connect inside and outside, Dickinson reads Aladağ’s collages as powerful heterotopias that cut across multiple other boundaries. Upending the scopic regime of Orientalism, they challenge distinctions between Orient/Occident and traditional/modern, while encouraging the viewer to rethink the power of her own gaze and personal associations with the work of art.

Left-handed behavior of the nanocrystalline ferromagnetic microwires

Left-handed behavior of Fe73.5Cu1Nb3Si13.5B9 (at.%) nanocrystalline ferromagnetic microwires arranged in parallel configurations as free-standing systems in order to develop new metastructures for GHz shielding applications were studied. Microwires with metallic diameters of 60 μm were obtained by cold-drawing process followed by annealing at 500oC for 1 h. The left-handed behavior of the metastructures was investigated in the frequency range 8.2 ÷ 12.4 GHz and confirmed by simulations using the Nicolson-Ross-Weir analytical method. The variation of the interwire distance proves to be a useful tool to obtain metastructures with suitable left-handed characteristics for GHz applications.

TRANSMISSION OF ANCIENT GREEK TECHNIQUES OF BUILDING ORDERS IN THE ARCHITECTURE OF KHARKIV IN THE INTERWAR PERIOD

The article presents the results of a study on the architecture of the interwar period in Kharkiv. The analysis focused on buildings of local historical significance, particularly those with facades based on the architectural order system. The selected objects included a residential complex with a store designed by architect O. Beketov and constructed between 1925 and 1936; the Metalist Stadium, designed in 1925 by architect Z. Permilovsky; the State Insurance Building, designed in 1927 by architects O. Molokin, H. Ikonnikov, and E. Lymar; and the ticket pavof the Metalist Stadium, designed in 1926 by Z. Permilovsky. The authors of the article analyzed the structure and proportions of the architectural orders used in these buildings, conducting a comparative analysis with ancient Greek architectural analogues to identify common features in the structure of the orders. As analogues, structures with similar proportions and architectural order systems were selected, including the Temple of Concordia in Agrigento (440 BCE), the Temple of Zeus at Olympia (5th century BCE), Temple F at Selinunte (circa 5th century BCE), and the Temple of Apollo at Delphi (circa 6th century BCE). The study employed comparative, structural, and compositional-proportional methods to analyze both the orders themselves and the elements of the selected buildings. Based on the analysis of the architectural orders of Kharkiv's buildings and the comparison with ancient Greek examples, it was established that during the interwar period, Kharkiv architects employed orders with proportions similar to those of ancient Greek temples from the Archaic period. Similarities were observed in the height of the orders, the columns, the ratios of the lower diameters of the columns, the heights of the entablatures, and the ratios of column height to entablature height. The analysis demonstrated a connection and transmission of techniques from ancient Greek craftsmen to the work of Kharkiv architects of the period. This area of research may be further explored, as the use of the order by Kharkiv architects in subsequent periods, such as after World War II, took on a different character and proportional relationships due to the different architectural challenges of that time. Keywords: order, column, entablature, entasis, module, proportions, colonnade.

Numerical Simulation of Fire Smoke Transport in Underground Spaces of a Pumped Storage Power Station

The present study employs numerical simulation to investigate the transportation of fire smoke within the underground powerhouse of a Pumped Storage Power Station. The obtained results reveal the spatial variation of fire smoke under the smoke exhaust effect inside the facility. For an 8 MW fire occurring on the generator, busbar, and turbine layer floors of the main powerhouse, recommended evacuation times are 86 seconds, 242 seconds, and 298 seconds respectively when utilizing a mechanical exhaust capacity of 85000 m3/h. In case three simultaneous fires occur at these three floor levels, the evacuation time is reduced to 45 seconds. Comparatively, when compared to situations without mechanical smoke exhaust systems, our simulations indicate that escape times for different fire scenarios were extended by only 6 seconds and 91 seconds respectively. These findings underscore the urgent need for optimizing the mechanical smoke exhaust system in order to provide valuable time for personnel evacuation during fire incidents.

Making the Data Visible: A Systematic Review of Systems-Level Data Dashboards for Leadership and Policy in Education

Systems-level data dashboards, those that provide education data aggregated to or used by leaders from school to state to federal levels, have become increasingly prevalent in the field of education both in the United States and in many education systems worldwide. This study provides a systematic review of the literature on systems-level data dashboards in K–12 schooling. The review demonstrates that research on systems-level dashboards lags that of student and teacher-focused learning analytics dashboards; that academic achievement remains the primary focus of dashboards, but contextual and non-test-score outcomes are now included in many dashboards and that use of dashboards by educators and the public is lower than desired but may be improved through alternative dissemination methods. It also demonstrates that research on the impacts of dashboards is particularly limited, a concern given the potential for unintended negative consequences. The article discusses the need to further incorporate systems-level dashboards into the organizational structures of education systems in order to enhance their utility for improving outcomes. The findings provide insights for stakeholders designing and using dashboards and hold the potential to improve dashboard use and student outcomes.

A new design of predictive plus PID control for second order plus time delay systems

AbstractThis paper proposes two novel predictive proportional‐integral‐derivative (PID) controllers for second‐order non‐self‐balance systems and self‐balance systems with time delays. For second‐order non‐self‐balance systems with time delays, traditional predictive PID controllers suffer from the drawback of failing to return to the setpoint after disturbances. Therefore, this paper introduces a novel double predictive PID controller, termed PPI‐PPD controller, which consists of an inner‐loop predictive PD controller and an outer‐loop predictive PI controller. In second‐order self‐balance systems encountered in practical chemical processes, time delays can lead to longer adjustment times, increased overshoot, and divergence issues. In order to solve these problems, an improved predictive PID (PPID) controller is proposed in this paper, which introduces a compensation link and an anti‐interference link in the traditional predictive PID controller. This enhancement improves the dynamic response and disturbance resistance of the control system. Simulation results demonstrate that both novel predictive PID controllers exhibit excellent control performance and robustness.

Non-integer order system identification with time delays and disturbance rejection

Non-integer order system identification with time delays and disturbance rejection

Challenges and Way Forward for Ensuring Environmental Compatibility of Commercial of the Shelf (COTS) Devices in a Satellite System

The terrestrial Commercial Of The Shelf (COTS) devices are being used in a satellite system in order to realize state-of-the-art technology. Further, it provides cost-effective solutions to the established methods and systems. It also meets the concomitant requirement to reduce power, mass and volume of a spacecraft system. However, prior to employment of each COTS device in a spacecraft system, it is essential to study the experiments conducted on COTS device, failure modes and design techniques reported in the literature to mitigate single event effects (SEE). Further, environmental compatibility of COTS device needs to be ensured in a spacecraft system for an application. The paper provides the challenges and way forward for ensuring environmental compatibility of COTS devices in a spacecraft system for an application.

ARCHIVE LAYOUT AND ARCHIVE MANAGEMENT IN THE SUB-DISTRICT OFFICE OF BABAT, LAMONGAN REGENCY

Background: Archives in the Sub-district include various archives from each field as well as report archives from the village. Archives, as valuable organizational assets for institutions, must be managed based on archival science principles by paying attention to the archive storage system and procedures in order to maintain and facilitate archive retrieval. Objective: This study aims to describe the spatial layout and management of archives in the Babat Sub-district Office, Lamongan Regency. Method: Data sources were obtained from oral sources told by informants and direct review of conditions in the Archives Room of the Babat Sub-district Office, Lamongan Regency. In addition, archive arrangement activities were carried out for one month. Results: The results of this study are that archive storage in the Babat Sub-district Office, Lamongan Regency is carried out in a room which is specifically for archive management. However, in the archive layout there are still some inconsistencies with the procedures that can affect the quality of archive storage. Conclusion: in the Babat District Office, archive arrangement and archive management have been carried out, but there are still inconsistencies with the procedures for managing and storing archives.

Experimental Tests and Simulations About The Efficiency of Commercial Hybrid Inverters Operating at Variable Power Factor

The need to ‘rethink’ the concept of Distribution, both at the planning and operational levels, arises from the emergence of the Distributed Generation paradigm, mostly installed in LV networks. The existing arrangements for the management, protection and control of distribution networks are typically inadequate for this ever-increasing presence of Distributed Generation. Consequently, national and international grid codes have been updated requiring distributed generators to be involved in grid control by supplying ancillary services, such as the voltage and frequency regulation. In this context, the Italian Standards, and in particular the CEI 0–21, require hybrid inverters of residential systems, which are usually only setup to supply active power at unity power factor, to include also the possibility of being able to absorb or supply reactive energy. This allows to limit the over / under voltages problems. To this aim, the inverter manufacturers have introduced the possibility for residential inverters to set the power factor. These new capabilities have been exploited in this paper in order to study the inverter performance with the variation of the power factor, considering both the inductive and the capacitive behaviour. In particular, the presented paper focuses on experimental tests on a hybrid inverter-based system for residential use with the aim of evaluating the dependence of the inverter efficiency on the power factor. Based on measured values, a Matlab/Simulink simulator has been developed for modelling the system, using the found dependence. The main aim is to evaluate the inverter control systems in order to participate in regulation services and to evaluate the inverter efficiency in case of a power factor different from unity.

Antisymmetric tensor fields in 4D: actions, symmetries and first order Duffin-Kemmer-Petiau formulations.

Abstract Analyzing the representations of the Lorentz group, we give a systematic count and construction of all the possible Lagrangians describing an antisymmetric rank two tensor field.
 The count yields two scalars, which provide the ingredients of the gauge invariant Kalb-Ramond model, equivalent to the sigma model and familiar from super gravity and string theory, and of the conformally invariant
 Avdeev-Chizhov model, which describes self-dual tensors. The count also includes a pseudoscalar with symmetric coupling, and an additional pseudoscalar, an antisymmetrized form of the Avdeev-Chizhov Lagrangian.
 This quantity was first derived in an $SU(2/1)$ superalgebraic model of the weak interactions. It is also conformally invariant, and naturally implements the Landau $CP$ symmetry. Then, by extending the Duffin-Kemmer-Petiau 10 component formalism, we recover the model Lagrangians as first order systems.
To complete the analysis, we classify all local Lorentz invariant potentials (mass terms and quartic couplings)
 for charged antisymmetric tensor fields coupled to a Yang-Mills field.

Reliability Variation Assessment Due to Alteration in Subsystems of a Series-Parallel System under Weibull Failure Laws

Here, we consider a (m, ni) order system having 'm' number of subsystems connected in series and each subsystem has 'n' number of components in parallel. The reliability of the system has been obtained by deleting 'y' number of subsystems (or adding 'x' number of subsystems) from (or to) it. The variation in reliability due to alteration in subsystems has been assessed for a particular system of (4,3) order. A regression approach is used to quantify the strength of variation in reliability due to alteration in subsystems. The coefficient of determination (R2) and adjusted R2 are also obtained to examine the goodness of fit. The variation in reliability has been shown numerically and graphically for particular value of the parameters. The application of the present study can be visualized in an Internally Fused Shunt Capacitor Bank System (electrical system).. KEYWORDS :Reliability variations, Series-Parallel system, Internally fused shunt capacitor bank, Regression Analysis.

The impact of extended decision times in planning and regulatory processes for energy infrastructure

Effective planning and regulatory processes ensure orderly energy systems. Often, decisions are not made within mandated timeframes and discrete approval processes are infrequent. A given delay may be compounded where multiple approval processes exist in sequence. These factors can negatively affect system costs and, ultimately, consumer welfare. We show that delays have meaningful impacts on electricity prices, system emissions, infrastructure investment and system operating costs. Our numerical simulation of data from Ireland shows that wholesale electricity prices are up to 10% higher and CO2 emissions up to 4% higher, attributable to delays associated with planning and regulatory approvals.

Impact of conventional and innovative processing conditions on organoleptic and nutritional properties of applesauce from organic and conventional production systems

The impact of cultivar and production system was studied over two years on organoleptic and nutritional characteristics of apple fruits and then, on purees processed with both conventional convection cooking under vacuum and fast innovative microwave cooking. The main factors affecting the content and composition of sugars, organic acids, volatiles, polyphenols, and fibre were in the decreasing order, cultivar, year, and production system. Regarding processing, the fast innovative microwave cooking led to puree with a higher viscosity but with a lower polyphenol content compared to the convection cooking. Microwave cooking seemed to better preserve fibre but limit the diffusion of minor phenolic components, coming from skin and pips to puree and increase polyphenols degradation due to excessively high temperature spot. These results indicate that apple puree processed under vacuum did not present lower organoleptic and nutritional quality compared with fresh apple, as far as sugars, acids, volatiles, polyphenols and fibres were concerned.

Ulam-Hyers stability analysis for hybrid φ-Caputo time-fractional systems of order δ in (1; 2

This study sought to explore the existence, uniqueness, and Ulam-Hyers stability results for a class of hybrid φ-Caputo time-fractional systems of order δ in (1,2]. The desired conclusions were achieved by applying well-known fixed-point theorems. We study the four different types of Ulam-Hyers stability for the proposed fractional problems. An example is provided at the end to demonstrate the effectiveness of the results.

Oxymorphone and Oxycodone Pharmacy Purchases in US Counties: Prelude to the Largest Rural Human Immunodeficiency Virus Outbreak in US History.

The largest rural outbreak of human immunodeficiency virus (HIV) in the US was centered in Scott County, Indiana, and linked to injection practices involving the opioid Opana ER (oxymorphone extended release [ER] reformulated). We examined supply trends using pharmacy transactions of Opana ER in Scott and all US counties from January 2007 to December 2019. We calculated the monthly morphine milligram equivalents (MME) of Opana ER (and its competitor OxyContin) in pharmacies using the Automation of Reports and Consolidated Orders System (ARCOS) database from the Washington Post. We modeled the MME rate per capita in Scott County and five geographic comparators in seven distinct time periods including the market introduction of abuse deterrent formulations of both drugs and the HIV outbreak period (circa 2014). After Opana ER introduction, transaction rates surged in Scott County, where annual OxyContin MMEs were already seven-fold higher than Indiana overall (CY2009: 46.8 vs. 6.8 MME/pop., respectively). Immediately after OxyContin's reformulation, the Opana ER growth rate in Scott County surpassed all geographic comparators modeled (~27 times faster than the US, 1.28 vs. 0.047 MME/pop/month, respectively). By 2012, prior to the outbreak, MMEs from Opana ER almost perfectly replaced the diminishing OxyContin supply. When Opana ER with INTAC was subsequently introduced, pharmacy transactions declined precipitously by nearly 50%, persisting through the HIV outbreak period and market withdrawal. Opana ER rapidly supplanted OxyContin in a vulnerable population that was at heightened risk for HIV who subsequently faced an immediate supply shock after its reformulation. Pharmacy transactions are critical for suspicious order monitoring and pharmacovigilance by US and international agencies especially during deleterious supply shocks in legal and illicit drug markets.

Ab initio study of the laser-induced ultrafast spin dynamics on Ni[formula omitted]@C40H34 carbon cross

Miniaturizing magnetic logic is a significant challenge in spintronics. Magnetic molecules, with their complex properties, play a central role in this area. They offer encouraging prospects for today’s and future nanoscale magnetic applications. Here, we suggest a carbon cross system for spin-based logic operability with emphasis on laser-induced spin manipulation across carbon nodes. Using the spin density of the nickels, we accomplish six spin-transfer as well as several local-spin flip processes. All the spin dynamics scenarios can be accomplished in the subpicosecond regime. Varying the strength of the magnetic field can considerably alter the local spin-flip scenarios, while leaving the global spin-transfer processes mostly unchanged. Building all-spin-based functionality can be done with increased speed due to the controllable spin-transfer and spin-flip-transfer scenarios. Furthermore, reversible logic operability leads to reduced power consumption. Here, the reversed spin-transfer processes can be accomplished both with different and the same laser pulses. The impact of the angles of incidence of the laser pulse on the spin dynamics processes is examined. The whole spin dynamics is realized within the subpicosecond domain. The findings of our study offer important knowledge and new understanding on how to successfully control spin dynamics processes on microscopic molecular systems in order to attain a particular logic operation.

Development and Evaluation of a Comprehensive Web-Based Canteen Food Ordering System

Abstract: This research paper presents the development of a web application aimed at introducing and optimizing the canteen ordering process within institutional and work environments. Focused on reducing wait times and enhancing user experience, the application facilitates menu browsing, order placement, and cashless payments via e-wallet or UPI. By leveraging technology to promote efficiency, the app seeks to address common challenges faced by students, faculty and employees during peak hours. The paper discusses design strategies, technical implementation, and potential implications for canteen operations, emphasizing the importance of user-centric solutions in enhancing overall satisfaction and productivity.

Functional Testing of the JivaJoy Online Product Stock Management and Ordering System Software Using Black Box Testing

Functional Testing of the JivaJoy Online Product Stock Management and Ordering System Software Using Black Box Testing