Chung-Fu Kao

Development of the sediment and water quality management strategies for the Salt-water River, Taiwan.

The Salt-water River watershed is one of the major river watersheds in the Kaohsiung City, Taiwan. Water quality and sediment investigation results show that the river water contained high concentrations of organics and ammonia-nitrogen, and sediments contained high concentrations of heavy metals and organic contaminants. The main pollution sources were municipal and industrial wastewaters. Results from the enrichment factor (EF) and geo-accumulation index (Igeo) analyses imply that the sediments can be characterized as heavily polluted in regard to Cd, Cr, Pb, Zn, and Cu. The water quality analysis simulation program (WASP) model was applied for water quality evaluation and carrying capacity calculation. Modeling results show that the daily pollutant inputs were much higher than the calculated carrying capacity (1050 kg day(-1) for biochemical oxygen demand and 420 kg day(-1) for ammonia-nitrogen). The proposed watershed management strategies included river water dilution, intercepting sewer system construction and sediment dredging.

A retargetable embedded in-circuit emulation module for microprocessors

Our objective is to develop a feasible, low-cost, retargetable embedded ICE-with as few modifications to the standard as possible-that can be easily integrated with microprocessor cores at the register-transfer level. This module, which can be embedded with a microprocessor core, makes real-time, online debugging at full speed possible with a minor gate-count overhead.

Hardware-Software Approaches to In-Circuit Emulation for Embedded Processors

In-circuit emulators have become part of the permanent structure of microprocessor cores to support on-chip test and debug activities in highly integrated environments such as SoCs. However, ICE design styles and operation principles are quite diverse. This article presents a taxonomy based on the notions of foreground and background operations and hardwaresoftware implementation alternatives to organize existing in-circuit emulation approaches.

Reusable embedded in-circuit emulator

In this paper, we o introduce the Reusable Embedded In-Circuit Emulator (EICE) and Reusable EICE development system. The main function in EICE we design are testing and debugging. The architecture of EICE is reusable and based on IEEE 1149.1 boundary scan architecture. The EICE development system can help EICE to reduce developing time while developing a microcontroller/microprocessor. We implemented EICE by ASIC and FPGA way and the development system had been demonstrated in two microcontroller.

Parameterized embedded in-circuit emulator and its retargetable debugging software for microprocessor/microcontroller/DSP processor

The in-circuit emulator (ICE) is commonly adopted as a microprocessor debugging technique. In this paper, a parameterized embedded in-circuit emulator and its retargetable debugging software are proposed. The parameterized embedded in-circuit emulator can be integrated into different style processors such as microcontroller, microprocessor, and DSP processor. The GUI interface debugging software can help user to debug easily. As a result of it, the duration of microprocessor debugging design procedure time is reduced.

Configurable AMBA On-Chip Real-Time Signal Tracer

This paper purpose an embedded AMBA signal tracer for microprocessor-based SoCs. This tracer provides five trace resolution modes that can perform a cycle-accurate or a transaction-based trace collection in an unlimited time. Also this tracer is implemented in a Soft-IP style. It provides four parameters for tracing configuration. The experimental results show that the bus tracer can reach a good compression ratio of 96%.

Application of Biopile System for the Remediation of Petroleum-Hydrocarbon Contaminated Soils

The objective of this study was to assess the potential of applying enhanced bioremediation on the treatment of petroleum-hydrocarbon contaminated soils. Microcosm experiments were conducted to determine the optimal biodegradation conditions. The control factors included oxygen content, nutrient addition, addition of commercially available mixed microbial inocula, addition of wood chips and rice husks (volume ratio = 1:1) as bulking agents, and addition of organic amendments (chicken manures). Results indicate that the supplement of microbial inocula or chicken manures could significantly increase the microbial populations in soils, and thus, enhance the efficiency of total petroleum hydrocarbon (TPH) removal (initial TPH = 5,500 mg/kg). The highest first-order TPH decay rate and removal ratio were approximately 0.015 day –1 and 85%, respectively, observed in microcosms containing microbial inocula (mass ratio of soil to inocula = 50:1), nutrient, and bulking agent (volume ratio of soil to bulking agent = 10 to 1) during 155 days of incubation. Results indicate that the first-order TPH decay rates of 0.015 and 0.0142 day –1 can be obtained with the addition of microbial inocula and chicken manures, respectively, compared with the decay rate of 0.0069 day –1 under intrinsic conditions. Thus, chicken manures have the potential to be used as substitutes of commercial microbial inocula. The decay rate and removal ratio can be further enhanced to 0.0196 day –1 and 87%, respectively, with frequent soil shaking and air replacement. Results will be useful in designing an ex-situ soil bioremediation systems (e.g., biopile, landfarming) for practical application.