Journal articles on the topic 'State modules'
To see the other types of publications on this topic, follow the link: State modules.
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 journal articles for your research on the topic 'State modules.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.
1
Tanvir, Saydul Morshed, Xiao Wenbo, and Jin Xin. "The effect of flight state parameters on the performance of photovoltaic modules in solar aircraft." Journal of Bangladesh Academy of Sciences 45, no. 1 (July 15, 2021): 73–83. http://dx.doi.org/10.3329/jbas.v45i1.54261.
Full textAbstract:
Based on the power generation model of photovoltaic modules, the effects of flight speed, altitude, time and area in solar aircraft on the performance of photovoltaic modules have been studied. As the flight speed increases, the power generated by the module increases but tends to saturate. When the conversion efficiency of photovoltaic modules is improved, the required power of the solar aircraft and the power generated by the photovoltaic modules are balanced at a faster flight speed. The power generated by the modules increases with the flight altitude but tends to saturate due to the drop of air temperature and the surface temperature of the module. The higher the altitude, the smaller is the atmospheric density, and atmospheric permeability, and the greater is the solar radiation intensity, and thus the power generated by the module increases. The power generated by the components is the strongest at noon. Battery performance is the strongest in summer and the weakest in winter, as the module’s performance is mainly determined by the intensity of solar radiation. Finally, the energy distribution of solar aircraft and long-time space flight has been discussed.
J. Bangladesh Acad. Sci. 45(1); 73-83: June 2021
2
Yao, Lewei, Hang Xu, Wei Zhang, Xiaodan Liang, and Zhenguo Li. "SM-NAS: Structural-to-Modular Neural Architecture Search for Object Detection." Proceedings of the AAAI Conference on Artificial Intelligence 34, no. 07 (April 3, 2020): 12661–68. http://dx.doi.org/10.1609/aaai.v34i07.6958.
Full textAbstract:
The state-of-the-art object detection method is complicated with various modules such as backbone, RPN, feature fusion neck and RCNN head, where each module may have different designs and structures. How to leverage the computational cost and accuracy trade-off for the structural combination as well as the modular selection of multiple modules? Neural architecture search (NAS) has shown great potential in finding an optimal solution. Existing NAS works for object detection only focus on searching better design of a single module such as backbone or feature fusion neck, while neglecting the balance of the whole system. In this paper, we present a two-stage coarse-to-fine searching strategy named Structural-to-Modular NAS (SM-NAS) for searching a GPU-friendly design of both an efficient combination of modules and better modular-level architecture for object detection. Specifically, Structural-level searching stage first aims to find an efficient combination of different modules; Modular-level searching stage then evolves each specific module and pushes the Pareto front forward to a faster task-specific network. We consider a multi-objective search where the search space covers many popular designs of detection methods. We directly search a detection backbone without pre-trained models or any proxy task by exploring a fast training from scratch strategy. The resulting architectures dominate state-of-the-art object detection systems in both inference time and accuracy and demonstrate the effectiveness on multiple detection datasets, e.g. halving the inference time with additional 1% mAP improvement compared to FPN and reaching 46% mAP with the similar inference time of MaskRCNN.
3
Bertolero, Maxwell A., B. T. Thomas Yeo, and Mark D’Esposito. "The modular and integrative functional architecture of the human brain." Proceedings of the National Academy of Sciences 112, no. 49 (November 23, 2015): E6798—E6807. http://dx.doi.org/10.1073/pnas.1510619112.
Full textAbstract:
Network-based analyses of brain imaging data consistently reveal distinct modules and connector nodes with diverse global connectivity across the modules. How discrete the functions of modules are, how dependent the computational load of each module is to the other modules’ processing, and what the precise role of connector nodes is for between-module communication remains underspecified. Here, we use a network model of the brain derived from resting-state functional MRI (rs-fMRI) data and investigate the modular functional architecture of the human brain by analyzing activity at different types of nodes in the network across 9,208 experiments of 77 cognitive tasks in the BrainMap database. Using an author–topic model of cognitive functions, we find a strong spatial correspondence between the cognitive functions and the network’s modules, suggesting that each module performs a discrete cognitive function. Crucially, activity at local nodes within the modules does not increase in tasks that require more cognitive functions, demonstrating the autonomy of modules’ functions. However, connector nodes do exhibit increased activity when more cognitive functions are engaged in a task. Moreover, connector nodes are located where brain activity is associated with many different cognitive functions. Connector nodes potentially play a role in between-module communication that maintains the modular function of the brain. Together, these findings provide a network account of the brain’s modular yet integrated implementation of cognitive functions.
4
Lee, Tien-Wen, and Gerald Tramontano. "Automatic parcellation of resting-state cortical dynamics by iterative community detection and similarity measurements." AIMS Neuroscience 8, no. 4 (2021): 526–42. http://dx.doi.org/10.3934/neuroscience.2021028.
Full textAbstract:
<abstract> <p>To investigate the properties of a large-scale brain network, it is a common practice to reduce the dimension of resting state functional magnetic resonance imaging (rs-fMRI) data to tens to hundreds of nodes. This study presents an analytic streamline that incorporates modular analysis and similarity measurements (MOSI) to fulfill functional parcellation (FP) of the cortex. MOSI is carried out by iteratively dividing a module into sub-modules (via the Louvain community detection method) and unifying similar neighboring sub-modules into a new module (adjacent sub-modules with a similarity index <0.05) until the brain modular structures of successive runs become constant. By adjusting the gamma value, a parameter in the Louvain algorithm, MOSI may segment the cortex with different resolutions. rs-fMRI scans of 33 healthy subjects were selected from the dataset of the Rockland sample. MOSI was applied to the rs-fMRI data after standardized pre-processing steps. The results indicate that the parcellated modules by MOSI are more homogeneous in content. After reducing the grouped voxels to representative neural nodes, the network structures were explored. The resultant network components were comparable with previous reports. The validity of MOSI in achieving data reduction has been confirmed. MOSI may provide a novel starting point for further investigation of the network properties of rs-fMRI data. Potential applications of MOSI are discussed.</p> </abstract>
5
Radaydeh, Nuha M., and M. R. D. Al-Mothafar. "Small-signal modeling of current-mode controlled modular DC-DC converters using the state-space algebraic approach." International Journal of Electrical and Computer Engineering (IJECE) 10, no. 1 (February 1, 2020): 139. http://dx.doi.org/10.11591/ijece.v10i1.pp139-150.
Full textAbstract:
<p>Small-signal models are useful tools to preliminary understand the dynamics of interconnected systems like modular dc-dc converters which find a wide range of industrial applications. This work proposes a state-space-based averaged small-signal model in symbolic form for a peak current-mode controlled parallel-input/parallel-output buck converter operating in the continuous-conduction mode. In modeling the converter power-stage each module is independently represented. For modeling the current-mode control the state-space algebraic approach is used to incorporate the current-mode control-law into the power-stage equations. For each module two parasitic elements in addition to the current-loop sampling action are included in the derivation. Furthermore, the control-to-output voltage transfer functions are presented in symbolic form for two cases of interest: the first when the converter has two non-identical modules to study the effect of inductor mismatch, and the second when the converter is composed of <em>n</em>-connected identical modules to assess the effect of varying the number of modules. All responses from PSIM cycle-by-cycle simulations are in good agreement with the mathematical model predictions up to half the switching frequency.</p>
6
Calabretta, Raffaele, Stefano Nolfi, Domenico Parisi, and Günter P. Wagner. "Duplication of Modules Facilitates the Evolution of Functional Specialization." Artificial Life 6, no. 1 (January 2000): 69–84. http://dx.doi.org/10.1162/106454600568320.
Full textAbstract:
The evolution of simulated robots with three different architectures is studied in this article. We compare a nonmodular feed-forward network, a hardwired modular, and a duplication-based modular motor control network. We conclude that both modular architectures outperform the non-modular architecture, both in terms of rate of adaptation as well as the level of adaptation achieved. The main difference between the hardwired and duplication-based modular architectures is that in the latter the modules reached a much higher degree of functional specialization of their motor control units with regard to high-level behavioral functions. The hardwired architectures reach the same level of performance, but have a more distributed assignment of functional tasks to the motor control units. We conclude that the mechanism through which functional specialization is achieved is similar to the mechanism proposed for the evolution of duplicated genes. It is found that the duplication of multifunctional modules first leads to a change in the regulation of the module, leading to a differentiation of the functional context in which the module is used. Then the module adapts to the new functional context. After this second step the system is locked into a functionally specialized state. We suggest that functional specialization may be an evolutionary absorption state.
7
Liu, Bo-Ying, Gao-Sheng Wang, Ming-Lang Tseng, Zhi-Gang Li, and Kuo-Jui Wu. "New Energy Empowerment Using Kernel Principal Component Analysis in Insulated Gate Bipolar Transistors Module Monitoring." Sustainability 10, no. 10 (October 11, 2018): 3644. http://dx.doi.org/10.3390/su10103644.
Full textAbstract:
At present, energy exhausted and environmental pollution are important issues, vigorously promoting new energy and improving the utilization efficiency and management level of new energy is an important way to achieve sustainable social development. Insulated gate bipolar transistors are important components in power converters and are widely used in new energy generation, new energy vehicles, high-speed rail and industrial production. However, the power module’s age is related to all aspects of its performance change, precluding the use of a single parameter to fully and accurately express the aging state. To monitor this state and evaluate the aging state, this study presents a method to analyze and process the state data of Insulated gate bipolar transistors power module aging tests using kernel principal component analysis and establishes a multi-dimensional grey model to evaluate the power module aging state. Using the temperature cycle aging test platform, the 7000 temperature cycling tests are implemented to accelerate the age of the power module to failure, the dynamic parameters of the power modules are measured after every 1000 cycles. During the accelerated aging process, the case temperature change rate, collector-emitter voltage drop Vce(SAT) and Miller platform of the gate signal of Vge are found to exhibit different variation trends at different aging stages. The result showed that multiple parameters are combined into integrated attributes to enable more accurate implementation of the state monitoring of power modules using the proposed method, which improves the status monitoring level of Insulated gate bipolar transistors modules. The proposed method is beneficial to improve the utilization efficiency and new energy source management level.
8
Kong, Qingyi, Mingxing Du, Ziwei Ouyang, Kexin Wei, and William Gerard Hurley. "A Method to Monitor IGBT Module Bond Wire Failure Using On-State Voltage Separation Strategy." Energies 12, no. 9 (May 11, 2019): 1791. http://dx.doi.org/10.3390/en12091791.
Full textAbstract:
On-state voltage is an important thermal parameter for insulated gate bipolar transistor (IGBT) modules. It is employed widely to predict failure in IGBT module bond wires. However, due to restrictions in work environments and measurement methods, it is difficult to ensure the measurement accuracy for the on-state voltage under practical working conditions. To address this problem, an on-state voltage separation strategy is proposed for the IGBT modules with respect to the influence of collector current (Ic) and junction temperature (Tj). This method involves the separation of the on-state voltage into a dependent part and two independent parts during the IGBT module bond wire prediction. Based on the proposed separation strategy, the independent parts in the failure prediction can be removed, making it possible to directly monitor the voltage variations caused by bond wire failure. The experimental results demonstrate that the proposed diagnosis strategy can accurately predict the bond wire failure stage in an IGBT module under different conditions.
9
Kweon, Soon-Jae, Jeong-Ho Park, Chong-Ook Park, Hyung-Joun Yoo, and Sohmyung Ha. "Wireless Kitchen Fire Prevention System Using Electrochemical Carbon Dioxide Gas Sensor for Smart Home." Sensors 22, no. 11 (May 24, 2022): 3965. http://dx.doi.org/10.3390/s22113965.
Full textAbstract:
This paper presents a wireless kitchen fire prevention system that can detect and notify the fire risk caused by gas stoves. The proposed system consists of two modules. The sensor module detects the concentration of carbon dioxide (CO2) near the gas stove and transmits the monitoring results wirelessly. The alarm module, which is placed in other places, receives the data and reminds the user of the stove status. The sensor module uses a cost-efficient electrochemical CO2 sensor and embeds an in situ algorithm that determines the status of the gas stove based on the measured CO2 concentration. For the wireless communication between the modules, on-off keying (OOK) is employed, thereby achieving a longer battery lifetime of the alarm module, low cost, and simple implementation. To increase the lifetime further, a wake-up function based on passive infrared (PIR) sensing is employed in the alarm module. Our system can successfully detect the on state of the stove within 40 s and the off state within 80 s. Thanks to the low-power implementation, in situ algorithm, and wake-up function, the alarm module’s expected battery lifetime is extended to about two months.
10
López, Joaquín, Pablo Sánchez-Vilariño, Rafael Sanz, and Enrique Paz. "Implementing Autonomous Driving Behaviors Using a Message Driven Petri Net Framework." Sensors 20, no. 2 (January 13, 2020): 449. http://dx.doi.org/10.3390/s20020449.
Full textAbstract:
Most autonomous car control frameworks are based on a middleware layer with several independent modules that are connected by an inter-process communication mechanism. These modules implement basic actions and report events about their state by subscribing and publishing messages. Here, we propose an executive module that coordinates the activity of these modules. This executive module uses hierarchical interpreted binary Petri nets (PNs) to define the behavior expected from the car in different scenarios according to the traffic rules. The module commands actions by sending messages to other modules and evolves its internal state according to the events (messages) received. A programming environment named RoboGraph (RG) is introduced with this architecture. RG includes a graphical interface that allows the edition, execution, tracing, and maintenance of the PNs. For the execution, a dispatcher loads these PNs and executes the different behaviors. The RG monitor that shows the state of all the running nets has proven to be very useful for debugging and tracing purposes. The whole system has been applied to an autonomous car designed for elderly or disabled people.
11
Tavallaee, Hamid, and Robabeh Mahtabi. "Some Properties of Multiplication Modules." Journal of the Indonesian Mathematical Society 23, no. 2 (December 24, 2017): 47–53. http://dx.doi.org/10.22342/jims.23.2.276.47-53.
Full text
12
Kudryavtsev, Oleg. "ACTUALITY OF CONDUCTING MODULAR TESTING IN SOFTWARE DEVELOPMENT." Management of Development of Complex Systems, no. 45 (March 1, 2021): 75–81. http://dx.doi.org/10.32347/2412-9933.2021.45.75-81.
Full textAbstract:
The testing process in creating software, as a separate stage, has its own life cycle. The testing lifecycle is part of the entire software cycle, and they must be synchronized with each other. Designing and developing testing in creating new software systems is a complex and time consuming task. The work of any software system is organized as a set of modules that can perform various functions. To ensure the correct operation of the system as a whole, you must first test each software module separately. In case of defects, this procedure will make it easier to identify the problem in the modules and completely eliminate the relevant shortcomings. Testing all modules separately is called modular testing. The article examines the main aspects of modular testing. The software life cycle is considered and the stages of the computer program development cycle are graphically presented. It is investigated that one of the most important stages is the stage software testing. The main definitions concept of "testing" are analyzed in detail and the main types of testing process are listed. It is established that modular testing is one of the most important types of testing. Modular testing is considered to be the simplest step in testing the entire system because the modules to be tested are usually small in size. When using this method, the complexity of creating test cases increases. To put the whole system into operation, you need to set the values of the test variables correctly, and to bring part of the real system to the required state, you need to run the whole scenario. However, modular testing is associated with significant problems, which are explored in the article. The main tasks and approaches to modular testing are evaluated. The article thoroughly reveals the characteristics of modular testing as a method of structural testing.
13
Abdrazakov, Evgeniy, and Victor Andreev. "Power supply of a modular mobile robot in combination with a communication channel over power supply lines." Robotics and Technical Cybernetics 9, no. 1 (March 31, 2021): 72–80. http://dx.doi.org/10.31776/rtcj.9108.
Full textAbstract:
The article is devoted to the development of a full-featured power supply module with an integrated communication channel over the power supply lines. The module is intended to perform the energy function of a mobile robot (MR), namely, to provide power to all electronic and mechatronic units of mobile robots with modular architecture. In contrast to the power supply unit for robots with mono-block architecture, in this case, the module power supply node must be made in the form of a full-featured module, i.e. meet a number of special requirements: 1 - structurally it must be made as a separate module, easily included in the design of the modular robot and possess the ability to quickly build up its power; 2 - the control system must monitor the state of the battery and power consumption of each of the MR’s modules, to manage the process of switching them off / on; 3 - to have an information communication channel with all MR’s modules for dynamic control of the power supply to each of the modules, including the supervisor module for subsequent transfer power status parameters to the operator of the MR by the radio channel. As a part of the solution of the problem the concept of sub-module principle of organizing the structure of the power supply module of modular mobile robot was developed, battery power submodule and submodule decoder based on PLC modem using DC-PLC technology (Direct Current Power Line Communication), which provides the formation of an intermodular information communication channel over the power supply lines, were designed and manufactured.
14
Boehme, Christian, Andreas Ostmann, and Martin Schneider-Ramelow. "Modular Microsystems with Embedded Components." International Symposium on Microelectronics 2013, no. 1 (January 1, 2013): 000735–39. http://dx.doi.org/10.4071/isom-2013-wp52.
Full textAbstract:
Each system is designed to fulfill the desired purpose. It is defined by its inputs, outputs, structure, environment, boundary, and the including elements (subsystems). Due to the ongoing miniaturization and integration the complexity of subsystems increases continuously. This paper is intended to demonstrate the build-up of modular Microsystems. By using the embedding technology, each subsystem (module) is interchangeable and stackable. Therefore, the functionality of the entire system depends solely on the selected modules. Moreover, the enhancement, expansion or redesign can be accomplished by replacing existing or adding new modules. The communication between the individual modules is based on the standardized I2C bus. Additionally, a USB interface has been implemented to manage the data transmission between the embedded camera module and a computer. The whole system recognizes each module and performs accordingly. The user can access sensor values, watch the video stream, and change the parameters of each module via a Graphical User Interface (GUI) on his computer. To achieve the build-up of the modular Microsystems we only used packaged active and passive components. Depending on the complexity of each module a core of up to eight layers is build up. The components are then soldered onto both sides of the core. At this point the components are embedded using a laminating press. The afterwards even surface is then structured again, to enable the stacking of the modules. Each step of the entire assembly process is done via state of the art circuit board processing technologies, including laser drill and laser-direct imaging.
15
Davidrajuh, Reggie. "A New Modular Petri Net for Modeling Large Discrete-Event Systems: A Proposal Based on the Literature Study." Computers 8, no. 4 (November 15, 2019): 83. http://dx.doi.org/10.3390/computers8040083.
Full textAbstract:
Petri net is a highly useful tool for modeling of discrete-event systems. However, Petri net models of real-life systems are enormous, and their state-spaces are usually of infinite size. Thus, performing analysis on the model becomes difficult. Hence, slicing of Petri Net is suggested to reduce the size of the Petri nets. However, the existing slicing algorithms are ineffective for real-world systems. Therefore, there is a need for alternative methodologies for slicing that are effective for Petri net models of large real-life systems. This paper proposes a new Modular Petri Net as a solution. In modular Petri net, large Petri net models are decomposed into modules. These modules are compact, and the state spaces of these modules are also compact enough to be exhaustively analyzed. The research contributions of this paper are the following: Firstly, an exhaustive literature study is done on Modular Petri Nets. Secondly, from the conclusions drawn from the literature study, a new Petri net is proposed that supports module composition with clearly defined syntax. Thirdly, the new Petri net is implemented in the software GPenSIM, which is crucial so that real-life discrete-event systems could be modeled, analyzed, and performance-optimized with GPenSIM.
16
Sieth, Matthew, Sarah Church, Judy M. Lau, Patricia Voll, Todd Gaier, Pekka Kangaslahti, Lorene Samoska, et al. "Technology developments for a large-format heterodyne MMIC array at W-band." International Journal of Microwave and Wireless Technologies 4, no. 3 (April 12, 2012): 299–307. http://dx.doi.org/10.1017/s1759078712000293.
Full textAbstract:
We report on the development of W-band (75–110 GHz) heterodyne receiver technology for large-format astronomical arrays. The receiver system is designed to be both mass producible, so that the designs could be scaled to thousands of receiver elements, and modular. Most of the receiver functionality is integrated into compact monolithic microwave integrated circuit (MMIC) amplifier-based multichip modules. The MMIC modules include a chain of InP MMIC low-noise amplifiers, coupled-line bandpass filters, and sub-harmonic Schottky diode mixers. The receiver signals will be routed to and from the MMIC modules on a multilayer high-frequency laminate, which includes splitters, amplifiers, and frequency triplers. A prototype MMIC module has exhibited a band-averaged noise temperature of 41 K from 82 to 100 GHz and a gain of 29 dB at 15 K, which is the state-of-the-art for heterodyne multichip modules.
17
Di (邸新), Xin, and Bharat B. Biswal. "Characterizations of resting-state modulatory interactions in the human brain." Journal of Neurophysiology 114, no. 5 (November 2015): 2785–96. http://dx.doi.org/10.1152/jn.00893.2014.
Full textAbstract:
Functional connectivity between two brain regions, measured using functional MRI (fMRI), has been shown to be modulated by other regions even in a resting state, i.e., without performing specific tasks. We aimed to characterize large-scale modulatory interactions by performing region-of-interest (ROI)-based physiophysiological interaction analysis on resting-state fMRI data. Modulatory interactions were calculated for every possible combination of three ROIs among 160 ROIs sampling the whole brain. Firstly, among all of the significant modulatory interactions, there were considerably more negative than positive effects; i.e., in more cases, an increase of activity in one region was associated with decreased functional connectivity between two other regions. Next, modulatory interactions were categorized as to whether the three ROIs were from one single network module, two modules, or three different modules (defined by a modularity analysis on their functional connectivity). Positive modulatory interactions were more represented than expected in cases in which the three ROIs were from a single module, suggesting an increase within module processing efficiency through positive modulatory interactions. In contrast, negative modulatory interactions were more represented than expected in cases in which the three ROIs were from two modules, suggesting a tendency of between-module segregation through negative modulatory interactions. Regions that were more likely to have modulatory interactions were then identified. The numbers of significant modulatory interactions for different regions were correlated with the regions' connectivity strengths and connection degrees. These results demonstrate whole-brain characteristics of modulatory interactions and may provide guidance for future studies of connectivity dynamics in both resting state and task state.
18
Ameri, Reza. "On the prime submodules of multiplication modules." International Journal of Mathematics and Mathematical Sciences 2003, no. 27 (2003): 1715–24. http://dx.doi.org/10.1155/s0161171203202180.
Full textAbstract:
By considering the notion of multiplication modules over a commutative ring with identity, first we introduce the notion product of two submodules of such modules. Then we use this notion to characterize the prime submodules of a multiplication module. Finally, we state and prove a version of Nakayama lemma for multiplication modules and find some related basic results.
19
Gámiz, María Luz, Delia Montoro-Cazorla, María del Carmen Segovia-García, and Rafael Pérez-Ocón. "MoMA Algorithm: A Bottom-Up Modeling Procedure for a Modular System under Environmental Conditions." Mathematics 10, no. 19 (September 27, 2022): 3521. http://dx.doi.org/10.3390/math10193521.
Full textAbstract:
The functioning of complex systems relies on subsystems (modules) that in turn are composed of multiple units. In this paper, we focus on modular systems that might fail due to wear on their units or environmental conditions (shocks). The lifetimes of the units follow a phase-type distribution, while shocks follow a Markovian Arrival Process. The use of Matrix-Analytic methods and a bottom-up approach for constructing the system generator is proposed. The use of modular structures, as well as its implementation by the Modular Matrix-Analytic (MoMA) algorithm, make our methodology flexible in adapting to physical changes in the system, e.g., incorporation of new modules into the current model. After the model for the system is built, the modules are seen as a ‘black box’, i.e., only the contribution of the module as a whole to system performance is considered. However, if required, our method is able to keep track of the events within the module, making it possible to identify the state of individual units. Compact expressions for different reliability measures are obtained with the proposed description, optimal maintenance strategies based on critical operative states are suggested, and a numerical application based on a k-out-of-n structure is developed.
20
Yu Kiryanov, A. "Diagnostics of solid-state microwave modules at the initial stage of technological tests." Journal of Physics: Conference Series 2091, no. 1 (November 1, 2021): 012044. http://dx.doi.org/10.1088/1742-6596/2091/1/012044.
Full textAbstract:
Abstract Process testing is an integral part of the production of solid-state microwave modules used in radar stations. At the final stage of production, long-term technological tests are carried out. However, at the initial stage of testing, it is possible to carry out diagnostics of solid-state microwave modules, which makes it possible to identify malfunctions leading to failures of solid-state microwave modules.
21
Khin, Phone, Jin Low, Marcelo Ang, and Chen-Hua Yeow. "Shape Programming Using Triangular and Rectangular Soft Robot Primitives." Micromachines 10, no. 4 (April 7, 2019): 236. http://dx.doi.org/10.3390/mi10040236.
Full textAbstract:
This paper presents fabric-based soft robotic modules with primitive morphologies, which are analogous to basic geometrical polygons—trilateral and quadrilateral. The two modules are the inflatable beam (IB) and fabric-based rotary actuator (FRA). The FRA module is designed with origami-inspired V-shaped pleats, which creates a trilateral outline. Upon pressurization, the pleats unfold, which enables propagation of angular displacement of the FRA module. This allows the FRA module to be implemented as a mobility unit in the larger assembly of pneumatic structures. In the following, we examine various ways by which FRA modules can be connected to IB modules. We studied how different ranges of motion can be achieved by varying the design of the rotary joint of the assemblies. Using a state transition-based position control system, movement of the assembled modules could be controlled by regulating the pneumatic pressurization of the FRA module at the joint. These basic modules allow us to build different types of pneumatic structures. In this paper, using IB and FRA modules of various dimensions, we constructed a soft robotic limb with an end effector, which can be attached to wheelchairs to provide assistive grasping functions for users with disabilities.
22
Matteocci, F., S. Casaluci, S. Razza, A. Guidobaldi, T. M. Brown, A. Reale, and A. Di Carlo. "Solid state dye solar cell modules." Journal of Power Sources 246 (January 2014): 361–64. http://dx.doi.org/10.1016/j.jpowsour.2013.07.104.
Full text
23
Oikawa, Kazumi, Hidenori Takauji, Takanori Emaru, Takeshi Tsuchiya, and Shigenori Okubo. "Decision Making for a Mobile Robot Using Potential Function." Journal of Robotics and Mechatronics 19, no. 3 (June 20, 2007): 298–307. http://dx.doi.org/10.20965/jrm.2007.p0298.
Full textAbstract:
We discuss decision making for a behavior-based robot with modules which determining robot action. The subsumption architecture (SA) arranges modules in layers, giving upper-layer module action priority over lower-layer modules. Although implementation is easy, results in many inefficient actions because upper-layer module are used regardless of other modules. We solve this problem by representing actions by Potential Function (PF), in which maximum votes are collected from modules. Using event-driven state transition, the robot decides its action with appropriate sets of modules changed based on the situation. We apply this to navigation tasks in a corridor and show simulation results. When we give a map and path designation to the robot, we use a handwriting map interface. We compare object-oriented design SA and PMF with our proposal and show how inefficient actions are reduced using our proposal.
24
Wang, Meng, Jian Qiang Wu, and Xiao Hua Zhang. "A Self-Adaptive BMS Based on CAN-Bus for Power Li-Ion Battery." Applied Mechanics and Materials 130-134 (October 2011): 3553–56. http://dx.doi.org/10.4028/www.scientific.net/amm.130-134.3553.
Full textAbstract:
A self-adaptive battery management system (BMS) based on CAN-bus for power Li-ion battery was designed in this paper. It is designed distributed and composed of sampling modules, a master module and some aid devices. The sampling module is used to sampling the voltage of the cells and the temperature in the pack. And it keeps the temperature in safe range by controlling the fans in the pack. The master module receives the information from the sampling modules, samples the current of the main road, estimates the state of charge (SOC), the state of health (SOH), controls the main road relays. The modules communicate with each other by CAN-bus. The fault and temperature management are performed adaptively. It is shown that this self-adaptive BMS extend the battery lifetime and guarantee safe operation. And the self-power consumption is very low.
25
Palamar, A. "Methods and means of increasing the reliability of computerized modular uninterruptible power supply system." Scientific journal of the Ternopil national technical university 99, no. 3 (2020): 133–41. http://dx.doi.org/10.33108/visnyk_tntu2020.03.133.
Full textAbstract:
The problem of development and implementation of a simple and effective method of the rectifiers operation control for the modular uninterruptible DC power supply unit in order to increase its reliability is considered in this paper. The main idea of the method is to control the process of cyclic shifting of the switched-on power modules of the uninterruptible power supply by series switching into operation of each subsequent module from their unloaded reserve and switching out the previous one. The paper presents the control system structure where in addition to the central control module, it is proposed to add the control unit for power modules, which is responsible for implementing the process of their switching on and monitors their condition. In order to investigate the effectiveness of the proposed method, computer simulation model describing the power modules control logic is developed. The Simulink visual modeling environment and the mathematical tools of the Stateflow library component using state and transition diagrams are used in order to develop the simulation model. The developed simulation model is tested and the simulation results are given in the form of time diagrams of state change. The іmplementation of the developed method, due to the uniform reduction of the period during which the power modules of the uninterruptible power supply are on the switched-on loaded state, makes it possible to increase their operating time to failure, which in turn increases its reliability without deteriorating energy efficiency. The simulation results demonstrate the efficiency of the developed algorithm in various system operation modes. Based on the proposed method, hardware and software which is implemented as a part of intelligent computerized control system for uninterruptible DC power supply is created.
26
Randa, Gusti, and Taali Taali. "Pengembangan Modul Pembelajaran Berbasis WEB Pada Mata Kuliah PLC dan Pneumatic." Jurnal Pendidikan Teknik Elektro 1, no. 1 (November 25, 2020): 118–21. http://dx.doi.org/10.24036/jpte.v1i1.51.
Full textAbstract:
Based on the researcher's experience in taking PLC and Pneumatic courses in the fifth semester of 2018, the engineering faculty of the State University of Padang still uses manual books in printed form assisted by media in the form of power points where the media is less interactive and does not increase interest student self-study. Advances in information technology have enabled researchers to develop learning in changing the presentation of teaching materials, in this case, printed modules, into modules that are packaged in digital format, or known as electronic modules (e-modules). The research method used is R&D (Research & Development) and the model is 4D (Define, Design, Develop, and Disseminate). The research was conducted on students in the PLC and pneumatic courses at Padang State University. The questionnaire used in the study was a validation questionnaire and a student practicality questionnaire. In the distribution of validation questionnaires, the average results were obtained with a very valid category, on the distribution of practicality questionnaires to students, the scores were obtained in the practical category and some gave values in the very practical category. With the average value obtained, the module media is said to be very practical. Based on the results of the research data, it is stated that the module is very valid and practical.
27
Syafari and Nurliani Manurung. "Developing Analytic Geometry Module and Cooperative Learning Models to Improve Critical Thinking Ability." World Journal of Educational Research 7, no. 1 (December 23, 2019): p7. http://dx.doi.org/10.22158/wjer.v7n1p7.
Full textAbstract:
The third phase of the planned three-year research objected to test and to justify the results of the development of the Analytic Geometry module and cooperative learning models assisted with Macromedia flash animation to improve students’ critical thinking skills. Research subjects were students of the Study Program: Mathematics and Mathematics Education, University of State Medan, and Mathematics Education at Muslim Nusantara University, Alwashliyah Medan. This study used developmental research oriented to product development that refers to the 4-D model, which was defining, designing, developing, and disseminating. This third stage produced analytic geometry modules and cooperative learning models supported by Macromedia flash animation as well as instruments of critical thinking skills and positive attitudes toward the justified learning modules and models. These learning modules and models were arranged in the form of lecturer manuals and student books (modules).
28
Luo, Shi Yong, Wen Cai Xu, Zun Zhong Liu, and Jia Yun Zhang. "A Computation Software on Diffusion and Solid State Reactions Kinetics." Advanced Materials Research 148-149 (October 2010): 316–21. http://dx.doi.org/10.4028/www.scientific.net/amr.148-149.316.
Full textAbstract:
A computer software on solid/solid reaction kinetics, KinPreSSR, is one of subsystems in the software, Intellectualized Database Management System on Kinetics of Metallurgy (IDMSKM). KinPreSSR is a Windows application developed using Visual C++ and FoxPro, and includes two main modules, “DIFFUSION” and “REACTION”. KinPreSSR deals with the kinetics on the diffusion in solid state as well as solid/solid reactions. In the ‘REACTION’ module, the system has organized the commonly recognized kinetic models, parameters and employed both numerical and graphical methods for data analyses. The proper combination between the kinetic contents and the analytical methods enables users to use KinPreSSR for the evaluation and prediction of solid/solid reactions interested. The ‘DIFFUSION’ module includes two sub-modules of “database management system (DBMS)” and "Evaluation & prediction". The “DBMS” deals with the diffusion coefficients gathered from reported documents and the data evaluated according to some rules, besides, it can provide users with retrieval of diffusion coefficients. Based on the solutions to the Fick’s first law and the Fick’s second law in the four typical critical conditions, the "Evaluation & prediction" sub-module gives the predication of concentration distribution after diffusion process in solids or computation for diffusion coefficient.
29
Nisa, Wafi Lutfiatun, Ismet Ismet, and Nely Andriani. "Development of E-Modules Based on Multi-representations in Solid-State Physics Introductory Subject." Berkala Ilmiah Pendidikan Fisika 8, no. 2 (June 30, 2020): 73. http://dx.doi.org/10.20527/bipf.v8i1.7690.
Full textAbstract:
This study also aims to produce e-modules based on multi-representations in solid-state physics introductory subjects with good validity and practicality. The products produced are in the form of e-modules in the form of 3D flipbooks, including video, animation, sound, flash, and hyperlinks. This study uses the Rowntree development model. This model has three stages, planning, development, and evaluation stage. In the evaluation phase, Tessmer formative evaluation used, which consist of 5 stages, self-evaluation, expert review, one-to-one evaluation, small group evaluation, and field test. In the expert review stage, the average results of evaluations from experts obtained at 4.6 or 92.2% with a very valid category. The one-to-one evaluation stage found that the average result of the student questionnaire's impression on the use of teaching materials was 89%, with the category very practical. At the small group evaluation trial stage, the average score of the students' questionnaire assessment towards the use of teaching materials was 93.48% (very practical category). Based on the assessment that has been done, the e-module (electronic module) based on a multi-representation in solid-state physics introductory subject has been successfully developed with good validity and practicality.
30
Jefri, Achmad, and Siti Sendari. "Pengembangan Modul dan Trainer Pengemas Barang Untuk Pembelajaran FBD di Jurusan Teknik Elektro Universitas Negeri Malang." Jurnal FORTECH 1, no. 2 (August 24, 2020): 53–60. http://dx.doi.org/10.32492/fortech.v1i2.224.
Full textAbstract:
The objectives of this research are (1) to design development of instructional media in form of modules and product packaging trainers for Industrial Automation Workshop courses in Department of Electrical Engineering, Faculty of Engineering, State University of Malang, (2) developing product packaging trainers that have been made it can be used for a variety of systems (microcontrollers, smart relays, and PLCs), (3) developing product packaging trainer practicum module based on smart relay for learning FBD (Function Block Diagram) programming in Industrial Automation Workshop course in Department of Electrical Engineering, State University of Malang and, (4) testing feasibility of module and trainer of goods packaging that have been developed for learning courses in Industrial Automation Workshop in the Department of Electrical Engineering, Faculty of Engineering, State University of Malang. This study adopting a development tailored model to needs of module development but still refers to existing development models. Development model in this research uses development model from Sugiyono tailored to needs. Based on results of validation and feasibility testing of practicum modules by experts 1, experts 2, product trials and usage trials can be concluded that practicum modules and product packaging trainers are very suitable used in learning
31
Modi, Aditya, Debadeepta Dey, Alekh Agarwal, Adith Swaminathan, Besmira Nushi, Sean Andrist, and Eric Horvitz. "Metareasoning in Modular Software Systems: On-the-Fly Configuration Using Reinforcement Learning with Rich Contextual Representations." Proceedings of the AAAI Conference on Artificial Intelligence 34, no. 04 (April 3, 2020): 5207–15. http://dx.doi.org/10.1609/aaai.v34i04.5965.
Full textAbstract:
Assemblies of modular subsystems are being pressed into service to perform sensing, reasoning, and decision making in high-stakes, time-critical tasks in areas such as transportation, healthcare, and industrial automation. We address the opportunity to maximize the utility of an overall computing system by employing reinforcement learning to guide the configuration of the set of interacting modules that comprise the system. The challenge of doing system-wide optimization is a combinatorial problem. Local attempts to boost the performance of a specific module by modifying its configuration often leads to losses in overall utility of the system's performance as the distribution of inputs to downstream modules changes drastically. We present metareasoning techniques which consider a rich representation of the input, monitor the state of the entire pipeline, and adjust the configuration of modules on-the-fly so as to maximize the utility of a system's operation. We show significant improvement in both real-world and synthetic pipelines across a variety of reinforcement learning techniques.
32
Ramadhan, M. Agphin, and R. Eka Murtinugraha. "THE DEVELOPMENT OF E-MODULE ON SUBJECT OF STATISTICS IN STUDY PROGRAM CIVIL ENGINEERING EDUCATION, UNIVERSITAS NEGERI JAKARTA." BALANGA: Jurnal Pendidikan Teknologi dan Kejuruan 8, no. 2 (December 21, 2020): 70–74. http://dx.doi.org/10.37304/balanga.v8i2.1908.
Full textAbstract:
The purpose of this research is to develop an e-module for the Statistics subject in the Building Engineering Education study program, Jakarta State University. E-module development using Adobe InDesign software. This research is included in development research (R&D) using the ADDIE model (Analysis, Design, Development, Implementation, dan Evaluation). Two experts, who are material experts and media experts, validate the product. The product is an e-module which consists of 6 modules. Based on the validation, the average score of the material expert's assessment of modules 1 - 6 was 84% in the very feasible category. The average score of the media expert's assessment of modules 1 - 6 is 88.67% in the very feasible category. Based on the results of the validation, the Statistics E-Module is very feasible to use.
33
YU, YANGYANG, and BARRY W. JOHNSON. "SAFETY ASSESSMENT FOR SAFETY-CRITICAL SYSTEMS USING MARKOV CHAIN MODULAR APPROACH." International Journal of Reliability, Quality and Safety Engineering 18, no. 02 (April 2011): 139–57. http://dx.doi.org/10.1142/s0218539311004044.
Full textAbstract:
The Markov Chain Modular (MCM) approach is proposed in this paper in order to solve part of the failure-state dependency problem. The MCM approach completely avoids the failure-state dependency problem by avoiding the combinatorial modeling. To quantitatively assess safety, a new Markov chain modeling technique is developed to represent an m + 2 state homogenous Markov chain model using a three-state Markov model. The transition rate functions of the three-state Markov model can be determined by the transition rates of the m + 2 state Markov chain model. Given a series system has N modules and each module has O(m) operational states, the MCM approach reduces the operational states to O(N × m2) as opposed to O(m2N) by using the traditional Markov chain model.
34
Liang, Weixin, Youzhi Tian, Chengcai Chen, and Zhou Yu. "MOSS: End-to-End Dialog System Framework with Modular Supervision." Proceedings of the AAAI Conference on Artificial Intelligence 34, no. 05 (April 3, 2020): 8327–35. http://dx.doi.org/10.1609/aaai.v34i05.6349.
Full textAbstract:
A major bottleneck in training end-to-end task-oriented dialog system is the lack of data. To utilize limited training data more efficiently, we propose Modular Supervision Network (MOSS), an encoder-decoder training framework that could incorporate supervision from various intermediate dialog system modules including natural language understanding, dialog state tracking, dialog policy learning and natural language generation. With only 60% of the training data, MOSS-all (i.e., MOSS with supervision from all four dialog modules) outperforms state-of-the-art models on CamRest676. Moreover, introducing modular supervision has even bigger benefits when the dialog task has a more complex dialog state and action space. With only 40% of the training data, MOSS-all outperforms the state-of-the-art model on a complex laptop network trouble shooting dataset, LaptopNetwork, that we introduced. LaptopNetwork consists of conversations between real customers and customer service agents in Chinese. Moreover, MOSS framework can accommodate dialogs that have supervision from different dialog modules at both framework level and model level. Therefore, MOSS is extremely flexible to update in real-world deployment.
35
Jiang, Yunfeng, Louis J. Shrinkle, and Raymond A. de Callafon. "Autonomous Demand-Side Current Scheduling of Parallel Buck Regulated Battery Modules." Energies 12, no. 11 (May 31, 2019): 2095. http://dx.doi.org/10.3390/en12112095.
Full textAbstract:
This paper presents the algorithms, hardware overview and testing results for controlling discharge currents from mixed battery modules placed in a parallel configuration. Battery modules with different open-circuit voltage (OCV), internal impedance or even state of charge (SOC) between modules are usually used to form a battery pack. Parallel placed mixed battery modules are typically seen in second-life, repurposed or exchangeable battery systems to increase power and energy storage capacity of a battery pack in mobile, electric vehicle (EV) and stationary energy storage application. This paper addresses battery module heterogeneity by taking advantage of buck regulators on each battery module and formulating scheduling algorithms to dispatch the buck regulators to balance the current out of each battery module. In this way, mixed battery modules can be combined and coordinated to provide a balanced power flow and guarantee safety of the total battery pack. Both open-loop and closed-loop scheduling of buck regulated battery modules are analyzed in this paper. In the open-loop algorithm, buck regulator dispatch commands are computed based on full knowledge of the OCV and impedance of each battery module, while monitoring the load impedance. In the closed-loop algorithm, dispatch commands are generated automatically by a digital proportional-integral-derivative (PID) feedback controller for which battery module current reference signals are computed recursively while monitoring the load impedance. The closed-loop scheduling method is also validated through experimental work that simulates a battery pack with several parallel placed buck regulated battery modules. The experimental results illustrate that the current from each battery module can be rated based on the SOC of each module and that the current remains balanced, despite discrepancies between OCV and internal impedance between modules. The experimental results show that the closed-loop algorithm allows scheduling of buck regulated battery modules, even in the absence of knowledge on the variations of OCV and impedance between battery modules.
36
Priyougie, Priyougie, Ahsanul Haq, Rusniati Rusniati, and Muhammad Bahit. "The Effectiveness Of The Descriptive Statistics Module In Online Learning In Computerized Accounting Study Program, Banjarmasin State Polytechnic." International Journal of Educational Review 4, no. 2 (December 22, 2022): 273–81. http://dx.doi.org/10.33369/ijer.v4i2.25192.
Full textAbstract:
Module is considered important in distance learning as a self-study guide for students. The importance of module in the learning process because modules can facilitate students in learning independently or face to face. Based on several explanations regarding the importance of modules in distance learning, the authors are interested in examine the effectiveness of using the descriptive Statistics Module in Online Learning in the Computerized Accounting Study Program, Banjarmasin State Polytechnic. The variables observed by the authors in this study were the learning outcomes of groups of students who were given a module and those who were not given a module in descriptive statistics courses. The two variables were carried out a Normality Test with the purpose of assessing the distribution of data in groups of data or variables, whether the data distribution was normally distributed. From the results of the data normality test, a test of the assumption of homogeneity of variance was then carried out to determine the variance of several populations was the same or not. Then a difference test was carried out to test the differences in the group of students who were given the module and the group of students who were not given the module in learning descriptive statistics courses. The data normality test was carried out using the SPSS Kolmogorov Smirnov Test application on the learning outcomes data for descriptive statistics courses for students who were given a module and those who were not given a module yielded a significance value of 0.101. The significance value of 0.101 was greater than 0.05 so it can be concluded that the research data met the assumption of normality. The homogeneity of variance test was carried out by analyzing the significance value of Levene's Test for Equality of Variance where the significance result was 0.466 so it can be concluded that the data had a homogeneous variance. The final stage of this analysis is to test the difference between the learning outcomes data of student groups who were given modules and not given modules by using the Independent Sample t Test. The test results showed a significance value of 0.021 where the significance value was less than 0.05. Thus it can be concluded that the alternative hypothesis (H1) that states that "There is a significant difference between the learning outcomes of groups of students who are given a module and not given a module" can be accepted and verified statistically.
37
Pavkin, D. Yu, S. S. Yurochka, A. R. Khakimov, and I. M. Dovlatov. "Development of a Modular System for Digitalization of Appraisal Process." Agricultural Machinery and Technologies 16, no. 4 (December 13, 2022): 54–59. http://dx.doi.org/10.22314/2073-7599-2022-16-4-54-59.
Full textAbstract:
It is noted that the existing weighing platforms for weighing dairy cattle demonstrate certain shortcomings during the grading process. It was proposed to determine the fatness of animals by scanning their sacrum with optical systems, which allows monitoring their physiological state and, in case of deterioration, promptly change the diet. (Research purpose) To develop a modular system for the digitalization of appraisal process ensuring the autonomy and independence of modules. (Materials and methods) The emphasis is paid on the necessity of integrating into the whole farm system by using a unified Internet space. The development of a modular system for digitalization of appraisal was divided into 4 modules. A grading algorithm was worked out and compared with the layout diagram of the modules in order to assess the volume of work on the grading digitalization. Four strain gauges were installed in the weighing module. (Results and discussion) It was proved that the module provides high-precision weighing of animals (C3 accuracy), regardless of the external influence factors such as cow movements and the asymmetrical position of the cow inside the system box. The results can be displayed on the display of a single control unit. The camera of the vision module was placed at a height of 2,200 millimeters, which eliminates it being damaged by the animals and provides an unobstructed view for the 3D ToF camera. The transportation dimensions of the system prototype are as follows: length – 2,500 millimeters, width – 1,564, height – 2,118 millimeters. The total mass of the manufactured system, including the original platform, is approximately 620-640 kilograms. (Conclusions) A modular system for digitalization of appraisal work has been successfully developed and created. The weighing module was tested revealing an error of less than 1 percent, when testing the system with a reference mass of 655 kilograms and that of 1,200 kilograms.
38
NIKSERESHT, A., and A. AZIZI. "ON RADICAL FORMULA IN MODULES." Glasgow Mathematical Journal 53, no. 3 (August 1, 2011): 657–68. http://dx.doi.org/10.1017/s0017089511000243.
Full textAbstract:
AbstractWe will state some conditions under which if a quotient of a module M satisfies the radical formula of degree k (s.t.r.f of degree k), so does M. Especially, we will introduce some particular modules M′ such that M′ ⊕ M″ s.t.r.f of degree k, when M″ s.t.r.f of degree k. Furthermore, we will show that, under certain conditions, if the completion of a module M s.t.r.f of degree k, then there is a non-negative integer k′ such that M s.t.r.f. of degree k′. Moreover, we state a corrected version of Leung and Man's theorem (K. H. Leung and S. H. Man, On commutative Noetherian rings which satisfy the radical formula, Glasgow Math. J. 39 (1997), 285–293) on Noetherian rings that satisfies the radical formula.
39
Radisic, Vesna, Kevin M. K. H. Leong, Stephen Sarkozy, Xiaobing Mei, Wayne Yoshida, Po-Hsin Liu, William R. Deal, and Richard Lai. "220-GHz Solid-State Power Amplifier Modules." IEEE Journal of Solid-State Circuits 47, no. 10 (October 2012): 2291–97. http://dx.doi.org/10.1109/jssc.2012.2204923.
Full text
40
Ota, Yasuyuki, Akira Nagaoka, and Kensuke Nishioka. "Reduction of Soiling on Photovoltaic Modules by a Tracker System with Downward-Facing Standby State." International Journal of Photoenergy 2019 (October 29, 2019): 1–8. http://dx.doi.org/10.1155/2019/1296065.
Full textAbstract:
The radiation received by solar cells within photovoltaic modules is lower than that arriving at the module surface. One of the causes of this energy loss is soiling of the module surface. Therefore, the influence of dust adhesion on photovoltaic modules must be studied. In this study, we prepared two tracker systems: a new system and a typical system. During the night, the former can switch to a downward-facing standby state, while the latter assumes an upward-facing standby state. The soiling on the polymethylmethacrylate and glass set on the tracker systems with both standby states was evaluated for 20 months in Miyazaki, Japan. By adopting the tracker system with the downward-facing standby state, a direct transmittance that was more-than-5% higher than before was consistently obtained at 500 nm in both cases with polymethylmethacrylate and glass.
41
Batseva, Natalia L., and Julia A. Foos. "INCREASING AN ACCURACY OF CONTROL ACTION VOLUME CALCULATION IN CENTRALIZED EMERGENCY CONTROL SYSTEM FOR STATE ESTIMATION OF POWER SYSTEMS." Vestnik Chuvashskogo universiteta, no. 3 (September 29, 2021): 5–20. http://dx.doi.org/10.47026/1810-1909-2021-3-5-20.
Full textAbstract:
The paper presents the results of the study on the effectiveness and advisability of voltage’s and current’s angles usage, collected from a wide-area monitoring system, to increase an accuracy of control actions volume calculation in case of power system’s state estimation. Centralized emergency control system architecture of a power pool system is shown to better understand the research core. We emphasize that the state estimation software module is the key module in a high level hardware and software package. Ways of telemetry and synchronized phasor measurements collection are outlined. For research practice, Gauss-Newton mathematical method is modified via measurement vector, vector-function, and scalar matrix of weight coefficients. Experiments are provided by IEEE 14-bus power system and 500–220 kV real backbone network. These power systems have several control areas, connected by interchanges. According to experiment results, we conclude that using not only voltage’s and current’s modules but also angles increases an accuracy of control actions volume calculation and effectiveness of a centralized emergency control system operation in the part of a control action formation. Therewith, the usage of current’s modules and angles raises the execution time of the state estimation software module. It is undesirable for real time systems operation. Therefore, it is reasonable to take into account current’s modules and angles only for those interchanges in emergency mode, when intensity factor, characterizing the limit of static stability, is more than 0.92. We also find out that control action volume calculation is sensitive to mistakes in current’s angles measurements. Thus, for reliable usage of current’s modules and angles as data for a state estimation and control action volume calculation, it is necessary to prevent timing errors of synchronized phasor measurement units and also develop a phase shift correction algorithm.
42
Domogen, Jevera C., Joyce D. Cuyangoan, and Lloyd F. Ilacad. "Mainstreaming Gender Perspectives in Modular Instruction." International Journal of Learning, Teaching and Educational Research 21, no. 11 (November 30, 2022): 129–51. http://dx.doi.org/10.26803/ijlter.21.11.8.
Full textAbstract:
Gender equality in education can be achieved through gender mainstreaming. Through gender-responsive practices, this transformation can be achieved. This study assessed the implementation of Gender and Development (GAD) perspectives in modular instruction at Mountain Province State Polytechnic College. It aimed to identify modular instruction practices that promote gender-fair learning and challenges in mainstreaming gender perspectives and suggest measures to address the challenges. The study participants were thirty-four (34) faculty members as module developers. A descriptive research method through document analysis of the syllabi and modules was utilized to identify the gender mainstreaming practices in modular instruction. An interview and focus group discussion were conducted to identify challenges and further clarify issues in the research. The data analysis showed that course facilitators considered gender-inclusive practices in module development, indicating an awareness of gender mainstreaming. However, only a few were able to integrate GAD concepts into their modules. Also, there are pressing challenges faced by the course facilitators in facilitating gender mainstreaming practices that have given rise to a lack of commitment towards advancing GAD programs. The gender-inclusive practices and the different challenges underscore the further need to intensify mainstreaming efforts in the following areas: enabling policy, human resources, material resources, and activities.
43
Kulke, R., G. Möllenbeck, C. Günner, P. Uhlig, K. H. Drüe, S. Humbla, J. Müller, et al. "Ceramic Microwave Circuits for Satellite Communication." Journal of Microelectronics and Electronic Packaging 6, no. 1 (January 1, 2009): 27–31. http://dx.doi.org/10.4071/1551-4897-6.1.27.
Full textAbstract:
KERAMIS is the acronym of a German research and development project funded by the German Space Agency (DLR) and the Federal Ministry of Economics and Technology (BMWI). The consortium is developing an RF circuit technology for Ka band multimedia satellite applications. A set of modules has been designed, manufactured, and tested by the partners of the consortium. The goal of this effort is to qualify the KERAMIS technology for space applications and to participate in an on-orbit-verification (OOV) program of the DLR. The launch of the technology verification satellite (TET) is scheduled for late 2010. This paper will give an overview of innovative circuit and module designs as well as the assembly, integration, and test results of the project. The authors will present a modular circuit concept for state-of-the-art transmitters and receivers in space at around 20 GHz. Selected modules are a 4 × 4 switch matrix, two synthesizers, and other RF modules. All circuits are based on multilayer ceramic (LTCC) including passive components, transitions, housings, and DC supply.
44
Sanni, S. A., and S. O. Ogundipe. "Some modules of poultry production in Kaduna State, Nigeria." Nigerian Journal of Animal Production 32, no. 1 (January 1, 2021): 102–7. http://dx.doi.org/10.51791/njap.v32i1.1056.
Full textAbstract:
Poultry production plays a very important role in providing Nigerians with one of the cheapest sources of animal protein. In spite of this great nutritional contribution, some degree of discrepancies exist between its demand and supply vis a vis other economic expectations. This paper evaluates and compares the profitability of four layer production modules using input-output data from secondury sources (research reports and field experiences) and primary sources (2002/2003 input and output prices in Zaria). The modules covered by this paper are: started pullets (0-8 weeks), point of lay pullets (9-20 weeks), commercial egg production (21 - 72 weeks) and full cycle layer production (0)- 72 weeks). Fixed and variable costs were estimated for 500 birds and deducted from gross returns to give the net cash returns. The major investments in the started pullets and point of lay modules were the cost of pullets, accounting for about 61% and 50% of the total cost of production respectively. Feed constituted about 71% and 86% of the total cost of production in the commercial egg and full cycle layer production modules respectively. The analysis also indicate that sales of started and point of lay pullets accounted for over 90% of the gross income from started and point of lay modules while sales of eggs accounted for about 86% of the gross return from the other two modules. Net cash returns were positive for all the modules considered. The returns to Naira invested per year were 0.75, 0.09, 0.14 and 0.16, for started pullets, point of lay, egg production and full cycle layer modules respectively. It is cvident from these results that modules with shorter production cycle tends to generate higher returns to investment, as more batches are turnout per year depending on the length of productiun cycle.
45
Nikseresht, A., and A. Azizi. "Semi-irreducible Zariski spaces of modules." Journal of Algebra and Its Applications 13, no. 08 (June 24, 2014): 1450054. http://dx.doi.org/10.1142/s0219498814500546.
Full textAbstract:
In this paper, we state conditions under which, the family of semi-irreducible submodules of a module determine a Zariski space of that module and study the properties of this space. Also we characterize semi-irreducible submodules of finitely generated modules over Dedekind domains. Moreover, assuming that M and M′ are finitely generated modules over a Dedekind domain having isomorphic semi-irreducible Zariski spaces, we find some common properties of M and M′. In particular, we show that in this case the torsion-free components of M and M′ have the same rank and the torsion submodules of [Formula: see text] and [Formula: see text] are isomorphic, where N and N′ are the intersection of all semi-irreducible submodules of M and M′, respectively.
46
Mori, Yoshikazu, Kazuhiro Takayama, Takeshi Zengo, and Tatsuya Nakamura. "Development of Straight Style Transfer Equipment for Lower Limbs Disabled: Verification of Basic Motion." Journal of Robotics and Mechatronics 16, no. 5 (October 20, 2004): 456–63. http://dx.doi.org/10.20965/jrm.2004.p0456.
Full textAbstract:
We developed straight style transfer equipment for a person with disabled legs. It realizes travel in a standing state even on uneven ground, standing-up motion from a seated position, and ascending stairs. This equipment comprises three modules: a pair of telescopic crutches, a powered lower extremity orthosis, and a pair of mobile platforms. We detail the conceptual design of the equipment and the motion of each module. Cooperative operations using three modules are discussed through simulations. We verified travel in a standing state, including rotation, and standing-up motion from a chair through experiments using prototypes of telescopic crutches and mobile platforms.
47
Wijana, I. Made, and Anak Agung Putri Suardani. "IMPLEMENTASI UJI COBA MODUL-MODUL STATISTIKA BERBASIS SPREADSHEET UNTUK MAHASISWA JURUSAN AKUNTANSI POLITEKNIK." Jurnal Pendidikan Vokasi 6, no. 3 (December 24, 2016): 272. http://dx.doi.org/10.21831/jpv.v6i3.11148.
Full textAbstract:
Tujuan penelitian ini untuk mengetahui hasil penilaian ahli terhadap draf modul-modul mata kuliah statistika berbasis spreadsheet untuk mahasiswa Jurusan Akuntansi Politeknik yang telah dihasilkan pada penelitian tahap sebelumnya (tahap pertama), untuk mengetahui bagian dari modul yang perlu direvisi, dan untuk mengetahui hasil uji coba terbatas dari draf modul-modul tersebut. Instrumen yang digunakan untuk penilaian terdiri atas lima aspek yaitu aspek pendahuluan, pembelajaran, isi, tugas, evaluasi, penilaian, dan rangkuman. Uji coba terbatas dilakukan pada dua kelompok mahasiswa Jurusan Akuntansi Politeknik Negeri Bali. Hasil penelitian menunjukkan penilaian ahli materi yaitu secara keseluruhan modul-modul dikategorikan baik dan tiap-tiap modul dari tujuh modul dikategorikan baik. Bagian dari modul-modul yang perlu direvisi terutama dalam hal kecukupan contoh yang disertakan pada aspek isi, tingkat kesulitan soal pada aspek tugas, evaluasi, penilaian, dan ketepatan dalam penjelasan materi teoritis pada aspek pembelajaran. Hasil uji coba secara keseluruhan modul-modul mata kuliah statistika ini memberikan nilai yang lebih baik secara signifikan bagi mahasiswa yang menggunakan modul dibandingkan mahasiswa yang tidak menggunakan modul. Semua modul memberikan nilai yang lebih baik secara signifikan kecuali modul Regresi dan Korelasi.Kata kunci: Implementasi, Statistika, modul, berbasis spreadsheet TRIALS IMPLEMENTATION OF SPREADSHEET BASED STATISTICS COURSE MODULES FOR ACCOUNTING DEPARTMENT OF POLYTECHNIC STUDENTSAbstractThis research aims to know the results of the expert assessment on the module drafts that have been generated in the previous research stage (first stage), to determine which part of modules need to be revised, and to know the results of trials implementation of the module drafts. The instrument used for assesment covering five aspects: the introduction, learning, content, task,evaluation, assessment, and a summary. The trials implementation involving two groups of students from the Accounting Department Bali State Polytechnic. The results of the research show assessment of the expert is the overall modules are categorized good and all of the seven modules are also categorized good. Part of the modules need to be revised, especially in terms of examples adequacy, difficulty level of problems, and explanation accuracy in theoretical materials are included in the aspects of content, task/evaluation/assessment, and learning. The trials implementation of the overall statistical modules provide better results significantly for students who used the modules compared to students who did not use the modules. Every module provide better results signifcantly except on Regression and Correlation module.Keywords: statistics, implementation, module, spreadsheet-based
48
Ma, Xiaofei, Yang Li, Tuanjie Li, Hangjia Dong, Dawei Wang, and Juntao Zhu. "Design and analysis of a novel deployable hexagonal prism module for parabolic cylinder antenna." Mechanical Sciences 12, no. 1 (January 18, 2021): 9–18. http://dx.doi.org/10.5194/ms-12-9-2021.
Full textAbstract:
Abstract. This paper presents a novel deployable hexagonal prism module for parabolic cylinder antennas that exhibit characteristics of geometric scalability. The hexagonal prism module consists of six basic rib mechanisms distributed along the axis and parabolic directions of the parabolic cylinder. The basic rib mechanism along the axis direction is designed, and the position of each member in the deployed state is calculated according to the geometric relationships at the folded state. The basic rib mechanism along the parabolic direction is designed to ensure that the mechanism can be fully folded. The degree of freedom of basic loop mechanisms consisting of four basic rib mechanisms due to the splice of multiple modules is analyzed. The degree of freedom of the proposed hexagonal prism module is verified through simulations and experiments of a deployable mechanism composed of three hexagonal prism modules. The simulation and experiment results show that the proposed hexagonal prism module can offer synchronized and coordinated movement during the deployment process.
49
KOCYIGIT, Davut, and Umut Engin AYTEN. "Hybrid Battery Balancing System for Electric Drive Vehicles." Eurasia Proceedings of Science Technology Engineering and Mathematics 19 (December 14, 2022): 47–54. http://dx.doi.org/10.55549/epstem.1219150.
Full textAbstract:
In electric vehicles, cell and module voltage equalization plays a vital role in Battery Management System (BMS). The capacity, temperature, and aging imbalances in the cells and modules of electric vehicles battery packs restrict the amount of power that can be delivered to the vehicle. Spurred by this issue, we propose a new class of battery balancing systems, called hybrid balancing, capable of simultaneously equalizing battery capacity while enabling cost-effectiveness of cell-level passive balancing and module-level active balancing, modules consist of a number of cells connected in series, with cell-level passive balancing performed in a module, together with the module level switched capacitor that performs active balancing among the modules. The strategy is called hybrid balancing because it pursues goals beyond conventional state-of-charge equalization, including temperature and power capability equalization, and minimization of energy losses. Design details and MATLAB Simulink simulation results are provided for a hybrid balancing system implemented on a lithium-ion battery pack.
50
Bai, Li Biao, Si Jun Bai, and Yun Tao Guo. "Design and Application of the Similarity Measure Simulation Applied in Project Portfolio Allocating." Applied Mechanics and Materials 740 (March 2015): 952–56. http://dx.doi.org/10.4028/www.scientific.net/amm.740.952.
Full textAbstract:
Starting with synergetics and systems engineering theory, this paper proposes a model for measuring the similarity among allocated modules of Project Portfolio Allocation at the level of project. Utilizing concepts like order parameter of fit, good-of-fit for Project Portfolio Allocation (PPA) and similarity among allocated modules, this paper uses the value of similarity among allocated modules of PPA to reflect the similarity among allocated module which provides a useful analytical methods for project portfolio allocation management in large state-owned firms. Finally, the effectiveness and feasibility of the proposed model is demonstrated and validated by a case study.