Regression of a model on real-system output: An invalid test of model validity

1990 ◽  
Vol 34 (3) ◽  
pp. 183-190 ◽  
Author(s):  
S.R. Harrison
Keyword(s):  
Real System ◽  
Model Validity ◽  
System Output

scholarly journals SISTEM ADMINISTRASI AKADEMIK JURUSAN D3 AKUNTANSI BERBASIS TEKNOLOGI INFORMASI

2016 ◽  
Vol 13 (2) ◽  
Author(s):  
Lucy Sri Musmini ◽  
Ni Ketut Kertiasih
Keyword(s):  
Information Technology ◽  
Real System ◽  
Administration System ◽  
Academic Administration ◽  
Development Method ◽  
The Real ◽  
Academic Activities ◽  
System Input ◽  
System Output

AbstrakPerkembangan teknologi informasi dapat mempermudah dan mempercepat kegiatan yang dilakukan oleh sistem administrasi akademik. Tujuan penelitian ini adalah mengembangkan sistem administrasi akademik berbasis teknologi informasi Jurusan D3 Akuntansi Undiksha.Metode yang digunakan pada penelitian ini adalah metode pengembangan, dalam hal ini studi kasus pengembangan sebuah sistem administrasi akademik berbasis teknologi pada Jurusan D3 Akuntansi.Hasil penelitian ini adalah analisis sistem, yang terdiri dari analisis kelemahan dan kebutuhan sistem, dan desain sistem, yang terdiri dari desain konteks, flowchart, dan desain sistem riil. Sistem yang dikembangkan terkait dengan kegiatan akademik mahasiswa, dosen, dan jurusan. Akses input sistem dapat dilakukan oleh mahasiswa, dosen, dan administrasi, sedangkan akses output sistem dapat dilakukan oleh dosen dan administrasi. Administrasi jurusan dalam penelitian ini adalah sekretaris jurusan. Informasi yang diperoleh dari sistem adalah kegiatan akademik mahasiswa, dosen, dan jurusan pada Jurusan D3 Akuntansi. Implikasi penelitian ini adalah sistem adminstrasi akademik jurusan yang semakin efektif dan efisien. Kata kunci: Sistem, Administrasi Akademik, dan Teknologi Informasi AbstractThe purpose of this research is to develop academic administration system based on technology information for D3 Accounting Department, Undiksha.The method used in this research is the development method with case study to develop academic administration system based on technology information at the Department of Accounting D3.The results are the analysis of the system, which consists of the analysis of the weaknesses and needs of the system, and the design of the system, which consists of the design context, flowchart, and the design of the real system. The system developed and obtained information related to academic activities of students, lecturer, and department. Access to system input can be done by students, lecturer, and administration, while access to the system output can be done by the lecturer and administration. Administration majoring in this research is the department secretary. Implication of this research is the major system of academic administration more effective and efficient. Keywords : Systems, Academic Administration, and Information Technology

scholarly journals SISTEM ADMINISTRASI AKADEMIK JURUSAN D3 AKUNTANSI BERBASIS TEKNOLOGI INFORMASI

2016 ◽  
Vol 13 (2) ◽  
Author(s):  
Lucy Sri Musmini ◽  
Ni Ketut Kertiasih
Keyword(s):  
Information Technology ◽  
Real System ◽  
Administration System ◽  
Academic Administration ◽  
Development Method ◽  
The Real ◽  
Academic Activities ◽  
System Input ◽  
System Output

AbstrakPerkembangan teknologi informasi dapat mempermudah dan mempercepat kegiatan yang dilakukan oleh sistem administrasi akademik. Tujuan penelitian ini adalah mengembangkan sistem administrasi akademik berbasis teknologi informasi Jurusan D3 Akuntansi Undiksha.Metode yang digunakan pada penelitian ini adalah metode pengembangan, dalam hal ini studi kasus pengembangan sebuah sistem administrasi akademik berbasis teknologi pada Jurusan D3 Akuntansi.Hasil penelitian ini adalah analisis sistem, yang terdiri dari analisis kelemahan dan kebutuhan sistem, dan desain sistem, yang terdiri dari desain konteks, flowchart, dan desain sistem riil. Sistem yang dikembangkan terkait dengan kegiatan akademik mahasiswa, dosen, dan jurusan. Akses input sistem dapat dilakukan oleh mahasiswa, dosen, dan administrasi, sedangkan akses output sistem dapat dilakukan oleh dosen dan administrasi. Administrasi jurusan dalam penelitian ini adalah sekretaris jurusan. Informasi yang diperoleh dari sistem adalah kegiatan akademik mahasiswa, dosen, dan jurusan pada Jurusan D3 Akuntansi. Implikasi penelitian ini adalah sistem adminstrasi akademik jurusan yang semakin efektif dan efisien. Kata kunci: Sistem, Administrasi Akademik, dan Teknologi Informasi AbstractThe purpose of this research is to develop academic administration system based on technology information for D3 Accounting Department, Undiksha.The method used in this research is the development method with case study to develop academic administration system based on technology information at the Department of Accounting D3.The results are the analysis of the system, which consists of the analysis of the weaknesses and needs of the system, and the design of the system, which consists of the design context, flowchart, and the design of the real system. The system developed and obtained information related to academic activities of students, lecturer, and department. Access to system input can be done by students, lecturer, and administration, while access to the system output can be done by the lecturer and administration. Administration majoring in this research is the department secretary. Implication of this research is the major system of academic administration more effective and efficient. Keywords : Systems, Academic Administration, and Information Technology

Application of the System Nesting Technology for Studying the Invariance of a Complex Electric System Output in Terms of State Variables

2019 ◽  
Vol 2 (2) ◽  
pp. 26-32
Author(s):  
Kakhraman R. ALLAYEV ◽  
◽  
Akram M. MIRZABAYEV ◽  
Takhir F. MAKHMUDOV ◽  
Temur A. MAKHKAMOV ◽  
...  
Keyword(s):  
State Variables ◽  
Electric System ◽  
System Output

Assessing Under Varying Circumstances the Behavior of Photovoltaic Systems of Maximum Power Point Methods.

2019 ◽  
Vol 1 (2) ◽  
pp. 45-51
Author(s):  
Imad A. Elzein ◽  
Yuri N. Petrenko
Keyword(s):  
Comparative Studies ◽  
Maximum Power Point Tracking ◽  
Maximum Power ◽  
Pv System ◽  
Maximum Power Point ◽  
Point Tracking ◽  
Power Point Tracking ◽  
System Output ◽  
Power Point ◽  
Design Simplicity

In this article an extended literature surveying review is conducted on a set of comparative studies of maximum power point tracking (MPPT) techniques.  Different MPPT methods are conducted with an ultimate aim of how to be maximizing the PV system output power by tracking Pmax in a set of different operational circumstances. In this paper maximum power point tracking, MPPT techniques are reviewed on basis of different parameters related to the design simplicity and or complexity, implementation, hardware required, and other related aspects.

scholarly journals Delay compensation based controller for rotary electrohydraulic servo system

2021 ◽  
Author(s):  
Zakarya Omar ◽  
Xingsong Wang ◽  
Khalid Hussain ◽  
Mingxing Yang
Keyword(s):  
High Frequency ◽  
Dead Time ◽  
Sliding Mode ◽  
Servo System ◽  
Smith Predictor ◽  
Delay Compensation ◽  
Mechanical Parts ◽  
System Output ◽  
Electrohydraulic Servo System ◽  
The Stability

AbstractThe typical power-assisted hip exoskeleton utilizes rotary electrohydraulic actuator to carry out strength augmentation required by many tasks such as running, lifting loads and climbing up. Nevertheless, it is difficult to precisely control it due to the inherent nonlinearity and the large dead time occurring in the output. The presence of large dead time fires undesired fluctuation in the system output. Furthermore, the risk of damaging the mechanical parts of the actuator increases as these high-frequency underdamped oscillations surpass the natural frequency of the system. In addition, system closed-loop performance is degraded and the stability of the system is unenviably affected. In this work, a Sliding Mode Controller enhanced by a Smith predictor (SMC-SP) scheme that counts for the output delay and the inherent parameter nonlinearities is presented. SMC is utilized for its robustness against the uncertainty and nonlinearity of the servo system parameters whereas the Smith predictor alleviates the dead time of the system’s states. Experimental results show smoother response of the proposed scheme regardless of the amount of the existing dead time. The response trajectories of the proposed SMC-SP versus other control methods were compared for a different predefined dead time.

Machine-Printed Invoice Number Based on Fuzzy Recognition

2012 ◽  
Vol 214 ◽  
pp. 705-710 ◽  
Author(s):  
Xiao Ping Xian
Keyword(s):  
Neural Network ◽  
Bp Neural Network ◽  
Recognition Rate ◽  
Real System ◽  
Recognition Method ◽  
Recognition Time ◽  
Recognition Ability ◽  
System Requirements ◽  
Fuzzy Recognition ◽  
Detection And Separation

A new fuzzy recognition method of machine-printed invoice number based on neural network is presented. This method includes ten links: invoice number detection and separation of right on top of invoice, binarization, denoising, incline correction, extraction of invoice code numerals, window scaling, location standardization, thinning, extraction of numeral feature and fuzzy recognition based on BP neural network. Through testing, the recognition rate of this method can be over 99%.The recognition time of characters for character is less than 1 second, which means that the method is of more effective recognition ability and can better satisfy the real system requirements.

scholarly journals An Adaptive RBF-NMPC Architecture for Trajectory Tracking Control of Underwater Vehicles

Machines ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 105
Author(s):  
Zhenzhong Chu ◽  
Da Wang ◽  
Fei Meng
Keyword(s):  
Model Predictive Control ◽  
Prediction Model ◽  
Real Time ◽  
Predictive Control ◽  
Trajectory Tracking ◽  
Tracking Control ◽  
Working Environment ◽  
Gray Wolf ◽  
Trajectory Tracking Control ◽  
System Output

An adaptive control algorithm based on the RBF neural network (RBFNN) and nonlinear model predictive control (NMPC) is discussed for underwater vehicle trajectory tracking control. Firstly, in the off-line phase, the improved adaptive Levenberg–Marquardt-error surface compensation (IALM-ESC) algorithm is used to establish the RBFNN prediction model. In the real-time control phase, using the characteristic that the system output will change with the external environment interference, the network parameters are adjusted by using the error between the system output and the network prediction output to adapt to the complex and uncertain working environment. This provides an accurate and real-time prediction model for model predictive control (MPC). For optimization, an improved adaptive gray wolf optimization (AGWO) algorithm is proposed to obtain the trajectory tracking control law. Finally, the tracking control performance of the proposed algorithm is verified by simulation. The simulation results show that the proposed RBF-NMPC can not only achieve the same level of real-time performance as the linear model predictive control (LMPC) but also has a superior anti-interference ability. Compared with LMPC, the tracking performance of RBF-NMPC is improved by at least 43% and 25% in the case of no interference and interference, respectively.

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