A Low-Error, Cost-Efficient Design Procedure for Evaluating Logarithms to Be Used in a Logarithmic Arithmetic Processor

2016 ◽  
Vol 65 (4) ◽  
pp. 1158-1164 ◽  
Author(s):  
Chih-Wei Liu ◽  
Shih-Hao Ou ◽  
Kuo-Chiang Chang ◽  
Tzung-Ching Lin ◽  
Shin-Kai Chen
Keyword(s):  
Design Procedure ◽  
Efficient Design ◽  
Error Cost ◽  
Arithmetic Processor ◽  
Cost Efficient

scholarly journals 2D Heat Transfer Simulation of an Injection Mold: Comparison Between ANSYS Workbench and ANSYS Mechanical APDL

2021 ◽  
Author(s):  
Hugo Miguel Silva ◽  
Hugo Luís Rodrigues ◽  
João Tiago Noversa ◽  
Leandro Fernandes ◽  
António José Pontes
Keyword(s):  
Design Procedure ◽  
Maximum Temperature ◽  
Injection Molding Process ◽  
Efficient Design ◽  
Molding Process ◽  
Cooling Channels ◽  
Average Temperature ◽  
Recent Developments ◽  
Cost Efficient ◽  
Ansys Workbench

Abstract The fabrication of conformal cooling channels (CCC's) has become easier and more affordable due to recent developments in additive manufacturing. The use of CCC's allows better cooling performance than the conventional (straight drilled) channels, in the injection molding process. The main reason for this is that the CCC's can follow the paths of the molded geometry, whereas the conventional channels made by conventional machining techniques are not able to do so. CCCs can help to reduce thermal strains and warpage by reducing cycle time and allowing for a more uniform temperature distribution. CCC, on the other hand, has a more complicated design procedure than traditional channels. Computer-Aided Engineering (CAE) simulations) are crucial to achieve an effective and cost-efficient design. This article focuses the comparison of two ANSYS modules, for results validation. The relative error between ANSYS Workbench and ANSYS Mechanical APDL varied from close to 0 to below 1 %, in the case of maximum temperature Tmax, and between 1.5 to 5.5 approximately, for the average temperature Tavg. It can be concluded that, for the most refined mesh studied, the results are close by the two modules. Therefore, the ANSYS module to work on should be used based on the purpose of the work, as well as the complexity of the CAD geometry.

Error-aware Design Procedure to Implement Energy-efficient Approximate Squaring Hardware

2020 ◽  
Vol 10 (4) ◽  
pp. 471-477
Author(s):  
Merin Loukrakpam ◽  
Ch. Lison Singh ◽  
Madhuchhanda Choudhury
Keyword(s):  
Energy Saving ◽  
Relative Error ◽  
Energy Efficient ◽  
Piecewise Linear ◽  
Arithmetic Operation ◽  
Design Procedure ◽  
Digital Signal ◽  
Maximum Relative Error ◽  
Square Function ◽  
Efficient Design

Background:: In recent years, there has been a high demand for executing digital signal processing and machine learning applications on energy-constrained devices. Squaring is a vital arithmetic operation used in such applications. Hence, improving the energy efficiency of squaring is crucial. Objective:: In this paper, a novel approximation method based on piecewise linear segmentation of the square function is proposed. Methods: Two-segment, four-segment and eight-segment accurate and energy-efficient 32-bit approximate designs for squaring were implemented using this method. The proposed 2-segment approximate squaring hardware showed 12.5% maximum relative error and delivered up to 55.6% energy saving when compared with state-of-the-art approximate multipliers used for squaring. Results: The proposed 4-segment hardware achieved a maximum relative error of 3.13% with up to 46.5% energy saving. Conclusion:: The proposed 8-segment design emerged as the most accurate squaring hardware with a maximum relative error of 0.78%. The comparison also revealed that the 8-segment design is the most efficient design in terms of error-area-delay-power product.

Cost Efficient Design of Fault Tolerant Geo-Distributed Data Centers

2017 ◽  
Vol 14 (2) ◽  
pp. 289-301 ◽  
Author(s):  
Rakesh Tripathi ◽  
S. Vignesh ◽  
Venkatesh Tamarapalli ◽  
Deep Medhi
Keyword(s):  
Data Centers ◽  
Fault Tolerant ◽  
Distributed Data ◽  
Efficient Design ◽  
Cost Efficient

Cost-Efficient Design of a Diet Validation Study

1995 ◽  
Vol 142 (3) ◽  
pp. 353-362 ◽  
Author(s):  
Daniel O. Stram ◽  
Matthew P. Longnecker ◽  
Lisa Shames ◽  
Laurence N. Kolonel ◽  
Lynne R. Wilkens ◽  
...  
Keyword(s):  
Validation Study ◽  
Efficient Design ◽  
Cost Efficient

An Efficient Single-Screw 11 000 TEU Containership: The Suez Max SS

2001 ◽  
Vol 38 (04) ◽  
pp. 219-232
Author(s):  
B. J. Rosello ◽  
A. N. Perakis
Keyword(s):  
Cost Analysis ◽  
Economies Of Scale ◽  
Suez Canal ◽  
Efficient Design ◽  
Single Screw ◽  
Economical Design ◽  
Initial Stability ◽  
Twin Screw ◽  
Cost Efficient ◽  
The Cost

The ability to transport containers with the least cost at currently required service speeds of approximately 25 knots to maintain a regular operating schedule is the goal of every post-panamax containership operator. The desire to carry more containers is driven by several economies of scale and their implications, which allow for significant savings. A single-screw containership, the Suez Max SS, is designed and evaluated against existing designs that include the P & O Nedlloyd Southhampton, Maersk S-Class, and the twin-screw Suez Max, which is a concept vessel. The containerships are compared using several different ratios and a cost per 20-ft equivalent unit (TEU) evaluation. The design of the Suez Max SS was built to the maximum draft currently allowed by the Suez Canal Authority. An initial stability analysis is performed that utilizes five different container loading conditions. A cost analysis that involves capital, operating, port, and fuel costs and Suez Canal fees is also completed. The four vessels are evaluated on a round-trip schedule between the ports of Rotterdam and Singapore with the same voyage characteristics and conditions. The Suez Max SS is found to be a more economical design with savings of approximately 25% over the existing vessels and a 15% savings over the concept vessel evaluated in the cost analysis. The Suez Max SS utilizes its economies of scale and the advantages of a two-port schedule that allow it to be such a cost-efficient design.

Linking Natural Modeling to Techno-centric Modeling for the Active Involvement of Process Participants in Business Process Design

2016 ◽  
Vol 7 (2) ◽  
pp. 1-30 ◽  
Author(s):  
Stefan Oppl ◽  
Nancy Alexopoulou
Keyword(s):  
Business Process ◽  
Process Modeling ◽  
Process Design ◽  
Design Procedure ◽  
Design Approach ◽  
Efficient Design ◽  
Business Process Design ◽  
Formal Process ◽  
Accurate Representation ◽  
Active Involvement

Actively involving participants in business process modeling enables integration between elicitation and modeling steps of the BPM lifecycle. Such integration may lead to a more efficient design procedure and ultimately to a more accurate representation of the business process. However, active involvement of process participants creates several challenges, as the latter are not expected to have modeling skills. The purpose of this paper is to present a business process design approach, called CoMPArE /WP, which tightly integrates the elicitation and modeling stages of process design, through the active involvement of process participants. To achieve effective involvement of process participants, CoMPArE/WP adopts the principles of natural modeling. However, being a business process design approach aiming at supporting the whole BPM lifecycle, CoMPArE /WP deals also with the transition of natural modeling to formal process representations that can be enacted using a BPMS.

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