Human-computer Interaction Module Research Articles

Website Usability Analysis of Non Profit Organizations

Nonprofit organizations are an important pillar of any society, which specifically serve under privileged sections of society. Modern Information and communication technologies have huge potential to benefit the working processes of such organizations but deploying software application in such settings is quite challenging. These challenges emerge due to shortage of skilled employees, limited funds and weak organizational structures. In order to further understand the technological implications in such settings this paper explores the websites of different nonprofit organizations of Pakistan to understand usability problems. In order to gather empirical data, it prepared questionnaire mainly focusing on Jakob Nielson's heuristics. These questionnaires were distributed to final year undergraduate students taking a Human Computer Interaction module. The findings highlight serious usability issues in these websites. These findings are helpful for the nonprofit organizations to improve these websites for better information access.

Hardware Development of CNC System Based on OMAPL138 and FPGA

In order to realize high speed, high precision, high reliability, miniaturization performance of the CNC (Computer numerical control) system, this paper proposed a hardware platform of embedded CNC system based on OMAPL138 and FPGA. OMAPL138 is a SOC using C6748 DSP kernel and ARM9 kernel dual-core structure, the kernel frequency can achieve up to 375/456 MHz. ARM kernel of the CNC system which runs the Linux operation system is responsible for task management, DSP kernel is in charge of real-time interpolation and look-ahead algorithm, and FPGA module generates pulses to control the movement of the servo motor. Firstly, the overall hardware architecture of the embedded CNC system was designed. Meanwhile the hardware circuit design of CPU core module based on OMAPL138, human-computer interaction module, EMIFA bus interface of the FPGA core module were emphasized in detail, and also the serial port, Ethernet, USB communication interface module were introduced. A serial test experiments have been conducted and the results have shown that this embedded CNC system is powerful and stable.

Production Planning System for the Whole Steelmaking Process of Panzhihua Iron and Steel Corporation

A production planning system is designed for the whole steelmaking process, which includes desulfurization, vanadium extraction, steelmaking and continuous casting processes of Panzhihua Iron and Steel Corporation. The system is composed of modeling module, data interface module, data analysis module, static planning module, re-planning module, plan evaluation module, plan simulation module and human-computer interaction module. The system is connected with the L3 system of steel plant by using the data interface module, which can receive the real time scheduling information to make the static plan and re-plan under production disturbances. The simulation and plan evaluation function of the system can assist decision-maker to check and modify the production plan. The simulation experiments with real process data show that the system can make a feasible, executable, and effective production plan, and deal with primary random disturbances during production process timely.

Design of Remote Reservoir Water Level Monitoring System Based on GPRS

in order to understand the situation of design flood level, a water level monitoring system based on ARM7. The ARM7 high performance microprocessor LPC2132 as the core, uses the high precision AD converter TLC2543 data collection, combined with the system software and hardware design of GPRS transmission network, including the water level sensor data acquisition, remote transmission of GPRS messages, human-computer interaction module C/OS-II operating system with multiple components, the system design, to achieve the level of information the remote communication by using short message. The experimental results show that: the system to collect data of high precision, stable and reliable transmission, effectively realizes the real-time monitoring of water level data.

A DSP-Based Control System for Precision Variable Rate Fertilization

A real-time control system with TMS320F2812 DSP microprocessor as a control core for precision variable rate fertilization was designed, which were composed of the power system, DSP microprocessor controller, executive mechanism for variable rate fertilization, data storage module, speed test module and human-computer interaction module. A human-computer interaction interface system based on data storage and graphics was developed and the main control program was programmed. When the control system is working, the fertilizer rate is firstly entered by human-computer interaction interface, nextly the fertilizer rate and speed information are read into the DSP controller, and then the speed information is transmitted to monitor, finally the output pulses needed by motors are calculated, so the fertilizer rate can be controlled accurately. An experiment was conducted in the laboratory environment. The results showed that the error of fertilization rate of each fertilizer element was nitrogen (N: 0.05%), phosphorus (P:0.73%) and potassium (K:1.16%) respectly, and the consistency variability coefficient of fertilization rate of each fertilizer was nitrogen (N: 0.31%), phosphorus (P: 0.32%) and potassium (K: 0.15%) respectly. The control system for precision variable rate fertilization has high precision, good reliability and stability.

Motor Drive Module Design for Electric Care Bed

The electric care bed control system is divided into three modules, which are physiologic parameter detection module, human-computer interaction module and motor drive module (MDM). Those modules communicate with each other by controller area network (CAN) bus. Under the idea of modular design, a plug and play (PnP) multifunctional motor drive module (MDM) is developed. This MDM has a CAN interface which can make it possible to communicate with human-computer interaction module, and then control the position closed-loop and speed closed- loop. The MDM based on CAN bus will be more efficient in communication and system expansion and make the electric care bed function perfectly.

Integrating RS technology into a GIS-based earthquake prevention and disaster reduction system for earthquake damage evaluation

This paper presents a method to integrate remote sensing (RS) data processing, generation of isoseismal lines and human-computer interaction modules into an improved GIS-based disaster reduction system. Using the RS data processing module, a statistical sample gray value and the RS-intensity at each field survey point in the region are calculated from the probabilistic relationship between the RS-variable and earthquake intensity, and stored in the GIS-based system database. Then, isoseismal lines are generated by a trend surface model from RS-intensity. They are further improved via modification of the isoseismal lines based on the empirical attenuation relationship calculated by using the RS-variable in the human-computer interaction module. The field survey shows that the proposed method gives a good generation of isoseismic lines. As a result, the accuracy of the damage and loss evaluation and the efficiency of the emergency decision making capability are improved.