INCREASING ENERGY INDICATORS OF HF TRANSMITTER WITH SINGLE-BAND MODULATION OF VOICE INFORMATION WHEN APPLYING AUTOMATIC MODE CONTROL

The article is devoted to the determination of the energy parameters of the transmitter when using automatic mode control for powering the output stages of single-sideband HF transmitters without taking into account losses in the controlled power supply.

Survey on CNN based super resolution methods

Super Resolution is a field of image analysis that focuses on boosting the resolution of photographs and movies without compromising detail or visual appeal, instead enhancing both. Multiple (many input images and one output image) or single (one input and one output) stages are used to convert low-resolution photos to high-resolution photos. The study examines super-resolution methods based on a convolutional neural network (CNN) for super-resolution mapping at the sub-pixel level, as well as its primary characteristics and limitations for noisy or medical images.

Survey on CNN based super resolution methods

Super Resolution is a field of image analysis that focuses on boosting the resolution of photographs and movies without compromising detail or visual appeal, instead enhancing both. Multiple (many input images and one output image) or single (one input and one output) stages are used to convert low-resolution photos to high-resolution photos. The study examines super-resolution methods based on a convolutional neural network (CNN) for super-resolution mapping at the sub-pixel level, as well as its primary characteristics and limitations for noisy or medical images.

A Mirror-Symmetrical XY Compliant Parallel Manipulator With Improved Performances Without Increasing the Footprint

The design of XY compliant parallel manipulators (CPMs) remains challenging considering the tradeoff between the mirror-symmetry for better constrained undesired rotations and the small footprint, although a significant number of XY CPMs have been reported in extensive applications. This paper presents a new XY CPM using mirror-symmetry without increasing its footprint, mainly aiming to reduce the undesired parasitic rotations of input and output motion stages. The concept of higher degree of stiffness centre symmetry is deployed to tackle the parasitic rotations, leading to a multi-layer compact XY CPM design with each layer being a rotation-symmetrical design. A nonlinear and analytical model of the proposed XY CPM is derived using free body diagrams and the Beam Constrained Model (BCM) to accurately analyse its performance characteristics over a large range of motion. The designed XY CPM is then verified by the nonlinear finite element analysis (FEA) method. Finally, the proposed multi-layer design is comprehensively compared with the well-received single-layer rotation-symmetrical design. It is shown in the new design that the parasitic rotations of input and output stages along with the actuator isolation are significantly reduced and that the out-of-plane-stiffness is also significantly increased.

Analysis of Electrothermal Effects in Devices and Arrays in InGaP/GaAs HBT Technology

In this paper, the dc electrothermal behavior of InGaP/GaAs HBT test devices and arrays for power amplifier output stages is extensively analyzed through an efficient simulation approach. The approach relies on a full circuit representation of the domains, which accounts for electrothermal effects through the thermal equivalent of the Ohm’s law and can be solved in any commercial circuit simulator. In particular, the power-temperature feedback is described through an equivalent thermal network automatically obtained by (i) generating a realistic 3-D geometry/mesh of the domain in the environment of a numerical tool with the aid of an in-house routine; (ii) feeding the geometry/mesh to FANTASTIC, which extracts the network without performing simulations. Nonlinear thermal effects adversely affecting the behavior of devices/arrays at high temperatures are included through a calibrated Kirchhoff’s transformation. For the test devices, the thermally-induced distortion in I–V curves is explained, and the limits of the safe operating regions are identified for a wide range of bias conditions. A deep insight into the electrothermal behavior of the arrays is then provided, with particular emphasis on the detrimental nonuniform operation. Useful guidelines are offered to designers in terms of layout and choice of the ballasting strategy.

THE EXPERIMENTAL STUDY IN THE CLASSROOM FOR THE ESTABLISHMENT OF THE ACCOUNTING STUDENTS’ SOFT SKILL THROUGH EFFECTIVE TEAM BUILDING

An accounting education graduate is required to master hard skills and soft skills. In terms of mastering soft skills in the accounting profession, it means to work together as a team. This soft skill provision is obtained through effective learning methods by forming a team that is given the assignment to solve a problem and accounts for it through presentations. The purpose of this study is to provide guidelines for lecturers to build effective teams for students. This study uses a descriptive experimental approach conducted by researchers in 5th semester students with Business Mixing Accounting courses. Team formation refers to McGrath’s Model framework. This model includes the input, process, and output stages. The input phase emphasizes the quality of the teams from various inputs. The larger the team, the more personality types, and time variations will be accommodated and the more conflicts that will be faced. The stage of the process includes how members deal with conflict and make conflict a success. The output stage includes criteria for measuring group performance results and other measures such as member performance satisfaction, group cohesiveness at the end of the task, and changes in member behavior to be better

Gate Driver Design in a 1 μm SiC CMOS Process for Heterogeneous Integration Inside SiC Power Module

In this paper, the design and implementation of a gate driver in SiC CMOS process is presented for heterogeneous integration (HI) inside the commercial SiC power module. The output stage of the gate driver circuit includes four-pull up (QP 1,2,3,4) and four-pull down (QN 1,2,3,4) transistors to vary current drive strength. The output stages are driven by tri-state buffer chains that are controlled by comparator based control circuits. The driver is tested over temperature up to 300°C. At higher temperatures, the peak drive current (under full strength with no external load) increases with the output swing remaining the same. Variation of the driver’s output pull-up and pull-down stage at higher load capacitance is also discussed in this paper. The driver circuit layout is optimized to utilize the maximum die area allowed by the process. The gate driver layout is 4.8mm × 4.8mm. The bond pads and layout orientation are configured for flip-chip packaging but can also be used for wire-bonding.

Role of Electronic Accounting Information Systems in Reducing the Phenomenon of Tax Evasion in Facilities Subject to Income and Sales Tax in the Hashemite Kingdom of Jordan

The study aimed at identifying the role of e-accounting information systems in reducing tax evasion in term of its three stages inputs, processing and outputs. It also explained the role of a compatibility between e-accounting systems and the instructions and procedures of income tax authority for reducing tax evasion. For achieving the purposes of the study, a questionnaire was distributed to employees of tax evasion authority, income and sales tax inspectors. The study found that using e-accounting information systems in the facilities subject to income and sales tax has contributed to a very high degree at input stage whereas the contribution of using e-accounting systems has been high at processing and output stages. In addition, the study indicated that existing the compatibility between e-accounting systems and the instructions of income and sales tax authority has highly contributed to the reduction of tax evasion. It also illustrated that the procedures and methods of professional examination of e-accounting information systems developed by income and sales tax authority have contributed to a very high degree of the reduction of tax evasion. Moreover, the study found that a sufficient experience of employees of income and sales tax authority in the field of using e-accounting information systems has contributed to a very high degree of the reduction of spreading of the phenomenon of tax evasion.