Miracle-dz/UniFAR-FTUs huggingface dataset:
Effective decision making in the defence industry

Decision making is one of the most important functions performed by a manager in the defence industry. Decision‐making authority is increasingly being delegated to the “empowered” employees of leaner organizations. The future profitability and viability of the business depend on effective decision making. Explores what constitutes a decision, identifies some obstacles to prompt action, sets the criteria for good quality decisions and gives examples of decision‐making approaches. Emphasizes approaches that incorporate both intuitive and rational thinking, encourage consensus and provide a way to monitor results for feedback. The principles for effective decision making in the defence industry are the same for other industries and apply to personal life. However, the last decade’s changes in defence spending and the global economy make the quality and timeliness of decisions more critical to success than ever before.
The usability evaluation indicators for IS prototype development process

At present, most of the researches are focused on the IS usability in company users. This paper discusses the government IS prototype development process evaluation. To analyses whether the IS function performance and effectiveness could achieve the anticipated goal, firstly, summarized the usability indicators from the previous research, constructed the preselected indicators set. Secondly, the Delphi method is adopted to select indicators which users pay more attention to from indicators set. Finally, the indicators system has been constructed by fitting the coordinate coefficient. In order to effectively and widely use IS, the evaluation system can improve the system usability and provide an effective communication between users and developers.
Application of an Active Power Filter on Photovoltaic Power Generation System

This paper deals with the Photovoltaic (PV) power generation system ( PVGS) , it is a promising source of energy with great interest in clean and renewable energy sources and an electromechanical active power filter (APF). The rising number of power electronics-based equipment has posed a problem on the quality of electric power supply. Both high power industrial loads and domestic loads cause harmonics in the utility. Power quality problems may arise in the system or may be caused by the consumer itself. The proposed PVGS with APF is able not only to track the maximum power point of the photovoltaic energy but also to dampen harmonic currents from the grid line. To attain these purposes, for the first time in order to increase the output voltage of PV generator this paper presents the design, simulation and implementation of a simple power electronic interface connected PV array using boost converter. The controller extracts maximum power from the solar array. A closed loop scheme employing a PI controller has been modeled to regulate the DC-bus voltage feed the converter, in the second time the paper provides a study to a PV system combined with the function of the active power filter system which permits the cancellation of the most noteworthy harmonics from the utility current. To demonstrate the performance of abovementioned PVGS with APF, a Matlab/Simulink model was established and simulated. Results seem to be very promising.
Soviet Free-Electron Laser Research

Abstract : The purpose of this report is to evaluate free-electron laser (FEL) research and development in the Soviet Union and to compare it with the corresponding activity in the U.S. In presenting this material, the intention is to acquaint U.S. researchers with the objectives, techniques, and results of their Soviet counterparts, as well as to provide the broad context of this area of Soviet R&D that consists of the organization, facilities, personalities, and leadership involved. The U.S. Soviet comparison has focused on the experimental programs, the most important area of this new technology. Section II compares individual experiments conducted by the USSR and the United States. In Sec. III the history of the theoretical development of FEL is presented, providing an insight into the conceptual issues that shaped FEL research in both countries. The remainder of the report is devoted primarily to the Soviet side of FEL research. Section IV describes the organizational features of this research in terms of the performer institutes and leadership, focusing on the role of the Academy of Sciences, USSR. Section V analyzes the scientific objectives of Soviet FEL research, for the most part as discussed by Soviet reviewers of their research program. Section VI presents conclusions.
Generating an Audio and Text for Indian Sign Language

Every normal people have the ability to observe and respond to the environment. Nearby are several unlucky persons who doesn’t encompass this principal blessing. Deaf and Dumb people have to communicate with normal people, it’s a challenging task. Sign Language is designed for deaf and dump people to convey message to the society. Sign Language Recognition is a technology which is used to identify human gestures with the help of Arduino uno. Gesture recognition based on the corresponding gesture symbol produces an audio & text output. The flex sensor is used to recognize the hand gestures. Recognized gesture is transferred to the Arduino uno and the output is generated. By using these techniques we can implement an efficient audio & text output for physically challenged people. Our technology consists of glove which will be worn by dumb people to communicate with normal people. The proposed prototype could also serve as an intermediate between deaf and dump people and normal people in everyday life such as bank or post office. The output will be displayed using LCD and also produces a speech signal.
REVIEW: ADVANCES AND APPLICATIONS OF SURFACE PLASMON RESONANCE BIOSENSING INSTRUMENTATION

Surface plasmon resonance biosensor technology has enjoyed rapid development in the past two decades and undergone a boom in recent years. The growing demand for analytical applications has brought a variety of these instruments on to the market, and these sensors are nearly essential in the biochemical analysis laboratory, with wide applications in the life sciences, environmental monitoring, food safety, drug screening, and clinical diagnosis. After examining the last three years of literature on surface plasmon resonance biosensor instruments, in this article excellent studies are reviewed that have practical significance for progress in the instrumentation. Among the studies on improving sensor performance, the focus has been on metal thin film modification and data processing; regarding innovative design, the combinations of biosensing techniques with microfluidic chips and electrochemical with surface-enhanced Raman scattering are discussed. Instrument miniaturization has also been considered, and some personal perspectives are presented. In addition, various applications of these sensors are in biochemistry, medical diagnostics, food safety, and environmental monitoring. Finally, conclusions on the developments to date are summarized and future development trends are proposed.
Time delay estimation for underwater signals and application to localization

Abstract : The problem of time difference of arrival (TDOA) is important in underwater acoustics for both passive and active sonar. Classical approaches to this problem are based on generalized cross-correlation (GCC) methods implemented in the frequency domain. After appropriate weighting of the cross spectral data in the frequency domain, an inverse discrete Fourier transform (IDFT) is performed and the peak of the resulting GCC function is located in the time domain. This thesis shows that the cross-spectrum of the data satisfies an appropriate signal subspace model; therefore the IDFT can be replaced with a signal subspace technique such as MUSIC. The result is an enhanced ability to locate the peak. Further, application of methods such as root-MUSIC or ESPRIT produce direct numerical estimates for TDOA without the need to search for a peak. Results are presented for an extensive set of simulations using both synthetic signal data and data from a ocean acoustic propagation model (MMPE). Results are further presented for an application of the new method to target localization and tracking. In all cases results are compared using both the new methods and the classical methods.
A new panel-integratable inverter concept for grid-connected photovoltaic systems

This paper describes the problems of conventional inverter concepts for photovoltaic power systems and presents a new, panel-integratable inverter concept as a solution. This concept is advantageous regarding safety (no DC-lines), flexibility (modular concept), converted energy per year (no mismatch losses due to individual MPP tracking of each panel) and costs (no reinforced isolation due to AC distribution). Furthermore a 250 W DC to AC inverter is developed, which consists of a series resonant DC-DC power converter and a line inverter. The inverter has a high efficiency and consumes little power itself. Meeting international standards, sinusoidal line current with low distortion is achieved. The inverter has a built-in controller to operate the panel in the maximum power point. Above this, the concept allows the flexible use with many different combinations of solar panels. To realize an inexpensive system, the controller is built up using standard low-cost components.
Broad-Band Directional Couplers Using Microstrip with Dielectric Overlays

This paper presents the development of two microwave integrated circuit (MIC) broad-band, high-performance directional couplers with dielectric overlays. The respective nominal coupling values of these components are 6 and 10 dB with useful bandwidths in excess of 3.4:1. Thorough descriptions of the design procedure, performance, and fabrication techniques are presented in sufficient detail to permit duplication of these couplers. The computer-aided design method used to develop these couplers is modeled to treat parallel-coupled microstrip lines with a dielectric overlay and is also suitable for developing directional filters and Schiffman phase shifters of similar construction. This and other design methods available for developing dielectric-overlay couplers are reviewed with particular attention given to related technological areas that warrant further investigation.
Using warm-up stages before measuring preferences for innovative products

This study proposes two new methods to familiarise respondents with innovative attributes and thereby ensure their stable preference statements within customer tests in the product development process. These warm-up phases differ in how the participants gather information about the product category, namely, independently or in the lab. A qualifying examination tests the appropriateness of study participants as respondents in a following preference measurement task. Both approaches effectively prepare respondents, though the independent search version offers slight advantages. Our study offers useful tools for evaluating the warm-up phases of preference measurement studies.
An Examination of Perception of Science and Art Centers’ Teachers about Organizational Change and Organizational Dissent

This research is carried out to examine the level of perceptions of teachers working in science and art centers about organizational change and organizational dissent. The population of the research consisted 1755 teachers working in 137 science and art centers in Turkey during 2019-2020 academic year. The data of the research were gathered by Teachers’ Attitude Scale for Organizational Cahnge scale developed by Kurşunoğlu and Tanrıöğen (2006) and Organizational Dissent Scale developed by Kassing (1998) and adapted to Turkish by Dagli (2015). In the data analysis process, SPSS was used. According to the results of the research, it was revealed that the perceptions of science and art centers’ teachers about organizational change and organizational dissent were on the medium level and while they showed significant differences in terms of the variables of gender, professional seniority and working status; they did not make any meaningful difference regarding the variables of marital status and graduation level. Also, a positive, meaningful and intermediate relationship between organizational change and organizational dissent perceptions of teachers. Accordingly, taking the findings of the research into consideration, various suggestions were presented at the last part of the research.
Overview of Ontology-Based Power System Applications

With the construction of smart grid, an increasing number of resources of smart grid knowledge base inevitably lead to the information island of power system and low utilization ratio of power system knowledge. Introduced the ontology for knowledge representation of Smart Grid domain and constructed a repository to be shared by each application software system. It can enhance the power system simulation and analysis capabilities of the complex state of the Smart Grid. At present, Smart Grid lacks of researches on knowledge applications based on ontology technology. This paper introduces some typical applications based on ontology, elaborates the application status of the ontology in power system. According to the ontology technology applied to typical domains, it looks forward to the direction of ontology-based applications in power system.
Would “Tornado-Preventing” Walls Work?

Simulations were performed using the Weather Research and Forecasting model in order to evaluate a proposal that called for the construction of three east–west “great walls” in the American Midwest to eliminate the major threat of tornadoes in Tornado Alley. The results of three simulations using the 31 May 2013 tornado outbreak are presented—one with natural terrain, one with 300-m tall walls as proposed, and another with walls much taller than proposed (2500 m). Through comparisons of temperature, moisture, instability, and supercell and tornado composite forecasting parameters, the “tornado-preventing” walls, as proposed, are shown to have very little impact on the atmosphere. When the height of the walls is greatly increased, the location of convective storms shifts eastward, instead of being eliminated. The short-term impacts of the taller walls imply possible desertification and areas with increased probability of non-supercellular tornadoes near the edges of the walls.
Mini assembly cell for the assembly of mini‐sized planetary gearheads

This paper discusses a novel assembly method and system for a commercially available 8 mm diameter miniature planetary gearhead. Our system comprises a commercially available four‐degree of freedom industrial robot, two vision systems, a force feedback system in the robot wrist, and specially designed flexible part feeders. The system has proved successful in assembling planetary gear units independently. Depending on the task, one can select whether to use the high accuracy and repeatability of the robot or alternatively use programmable frequency vibration in the gripper to stochastically align the parts that the robot handles.
Innovative features in a distributed decision support system based on intelligent agent technology

The author and his students were engaged in a multi-year project, SENTINEL, aimed at computerizing the strategic and tactical planning processes of the U.S. Coast Guard (USCG). In the course of this activity, we were also creating a decision support system for the human participants acting at the diferent levels of the USCG hierarchy. The chapter will describe the objectives, the problems and constraints of the task environment, as well as the solution to some problems that are fundamental and ubiquitous in many real-time, spatially and temporally distributed multi-agent systems.The fundamental and overall task of a Decision Support System (DDS) implemented was to allocate moving resources to moving tasks in an optimum manner over space and time while considering numerous constraints. We have introduced three significant innovations necessary to accomplish our goals. 1. Dynamic Scoping refers to a need-driven change in the size of the domain from which moving resources are called upon to accomplish moving tasks. The size of the domain has a limitation prescribed by the dynamic task environment, the technical capabilities of the resources, and the relationship between the expected gains and expenses. 2. The second innovation concerns "resource scheduling under time constraints. " We have introduced a method for the proper ordering of operating attributes and constraints in terms of a utility function.PRIORITY = IMPORTANCE*URGENCYHere, Importance is a measure of the relative static importance of an attribute in the decision making process. Urgency characterizes its gradually changing (usually increasing) relative importance over time. The constraints are arranged according to the priorities. More and more details are taken into account with each time-slice and more and more knowledge is used in the inference mechanism. A time-slice is the minimum time required for performing a unit of meaningful decision making. The ordering of constraints according to priorities guarantees that the result of planning is as good as time has permitted "so far. " 3. We have studied interagent communication and optimum message routing. Agents communicate at different levels--requesting and providing information, ordering/suggesting/accepting solutions to sub-problems, asking for and offering help, etc. The total knowledge about the environment and agent capabilities is too large to be stored by every agent, and the continual updating about the changes only aggravates the situation. The usual hierarchical organization structure for communication is inflexible, inefficient and error-prone. We have introduced the constrained lattice-like communication structure that permits direct interaction between functionally related agents at any level. The hierarchical and the lattice-like organizational structures may coexist: A transfer of temporary control over resources can be negotiated between the relevant agents directly while higher-level authorities will learn about the decisions, and can also modify or completely reject their implementation.
Using URANS to Predict Turbulent Flow Features in a Channel with Lateral Slot

Employing a commercial code an unsteady Reynolds Average Navier-Stokes (URANS) with Spalart-Allmaras as turbulence model numerical calculations were performed in order to predict the mean and velocity fluctuations fields in a rectangular channel with a lateral slot. The slot is attached to a lateral wall channel, being characterized by its deepness p and the gap width d. Simulations were performed keeping constant the slot deepness p and the length L while the gap width d was increased from 2 up to 6 mm. Three test sections involving p/d ratios12.50, 6.25 and 4.17were studied. Main results revealed that turbulence production increases with gap dimension decreasing. Large scale structures appearance were also the target of this paper. The study showed gap width plays an important role on this issue. As the gap width was increased large scales structures could be observed farther from channels entrance. Moreover, a kind of viscous effect in the gap was observed. As gap become very tight the frequency of coherent motions is reduced.
Damage assessment of beams from changes in natural frequencies using ant colony optimization

A numerical method is presented here to detect and assess structural damages from changes in natural frequencies using Ant Colony Optimization (ACO) algorithm. It is possible to formulate the inverse problem in terms of optimization and then to utilize a solution technique employing ACO to assess the damage/damages of structures using natural frequencies. The laboratory tested data has been used to verify the proposed algorithm. The study indicates the potentiality of the developed code to solve a wide range of inverse identification problems in a systematic manner. The developed code is used to assess damages of beam like structures using a first few natural frequencies. The outcomes of the simulated results show that the developed method can detect and estimate the amount of damages with satisfactory precision.
Parametric Simulation of Shovel-Oil Sands Interactions During Excavation

Hydraulic shovel excavators are widely used as primary production equipment in surface mining for removing overburden and ore materials. Variability in material diggability, unstructured mining environments and limited space, effective machine operation, and machine logistics affect the performance of the hydraulic shovel excavators. A hydraulic shovel simulator is developed to simulate the performance of hydraulic shovels for oil sands extraction in the ADAMS simulation environment. The shovel-oil sands interaction is simulated using a reformulated universal earth-moving model. The simulated digging parameters include the bucket dynamics, oil sands properties, oil sands-bucket interactions, and operating variables. The results show that the simulator is capable for identifying the parameters, which influence the performance of hydraulic shovels. This parameterized simulator provides a powerful tool for performance monitoring, excavation process designs and structural optimization of hydraulic excavators. The method presented in this paper forms the basis for developing comprehensive simulator models for automated shovel operations in constrained mining environments.
Social Modeling for Requirements Engineering

Much of the difficulty in creating information technology systems that truly meet people's needs lies in the problem of pinning down system requirements. This book offers a new approach to the requirements challenge, based on modeling and analyzing the relationships among stakeholders. Although the importance of the system-environment relationship has long been recognized in the requirements engineering field, most requirements modeling techniques express the relationship in mechanistic and behavioral terms. This book describes a modeling approach (called the i* framework) that conceives of software-based information systems as being situated in environments in which social actors relate to each other in terms of goals to be achieved, tasks to be performed, and resources to be furnished. Social perspectives on computing have provided much insight for many years. The i* framework aims to offer a modeling approach to the relationships embedded in computer systems that is part of an engineering method that offers systematic techniques and tools providing smooth linkages to the rest of the system development process, including system design and implementation. The book includes Eric Yu's original proposal for the i* framework as well as research that applies, adapts, extends, or evaluates the social modeling concepts and approach.
Matched wavelet analysis of single differential EMG signals

EMG signals can be considered as the sum of scaled and delayed versions of a single prototype. We have applied the Wavelet Transform choosing the mother wavelet so as to match the known shape of the basic component, and have compared the results obtained with different wavelets. The results in terms of MUAP detection and resolution are very encouraging even in the presence of asymmetric shape and high levels of additive noise.