414 research outputs found
The Experience of Adopting MES by Taiwan IC Foundry Operators
MES (Manufacturing Execution System) is a computer application system that integrates all relevant real-time information along every step in a manufacturing process. MES functions include data collection, WIP (Work in Process) tracking, material management, inventory management, exception management, and quality management etc.
IC manufacturing has over 300 fabrication processes, prohibitively expensive equipment, a large variety of products, and short product life cycle. MES, therefore, is essential for IC foundry manufacturers for gathering real-time production line information, supporting manufacturing decision making, and increasing manufacturing efficiency.
Taiwan IC manufacturers have invested in MES over the past few years. For this study we interviewed managers from Taiwan’s leading IC manufacturers responsible for implementing MES systems. Their MES adoption experiences and suggestions could benefit other IC manufacturers as well as manufacturers of other industry sectors
Scanning Near-shore Intertidal Terrain Using Ground LiDAR
Intertidal zone refers to the area under and above the water during high and low tides. Traditionally, this zone is not within the scope of land management authorities. Moreover, in accordance with principals set out by existing plans, intertidal zones are excluded from management zones. Boundaries should therefore be set at the land and sea border. Traditionally, methods in determining this have included the traditional theodolite (total station) method, mapping and aerial photography (photogrammetry). However, existing operational restrictions lower efficiency, in addition to increasing time and operational costs. Therefore this paper explores the practicality of a user-
friendly, ground-based high resolution laser scanning technology. This method offers easy operation and high-density characteristics with an instrument platform that can be installed on elevated rooftops. High accuracy and resolution is achieved using a stop-and-go method producing Digital Terrain Model (DTM) data. The range of the completed data is 61km in length, 2.5km in width, and -0.5m depth, with a sampling error of approximately ±2cm. Through the implementation discussed in this research, accurate information about the changes of topography in intertidal areas can be obtained
Improvement of LiDAR Data Accuracy Using 12 Parameter Affine Transformation
LiDAR data in a local coordinate system may need to be georeferenced and converted into a geographic or projected system. In coordinate transformation, the 7-parameter Helmet transformation method is usually used in measurements to eliminate the systematic errors made by a laser scanner. However, 7-parameter coordinate transformation assumes that there is only one scale error in all of the systematic errors. This study used 12 parameter affine transformation for coordinate transformation of airborne LiDAR data and terrestrial LiDAR data. The LiDAR data accuracy results upon 6-parameter similarity transformation, 7-parameter similarity transformation, and 12-parameter affine transformation were compared. The results showed that using 12-parameter affine transformation the airborne LiDAR and terrestrial LiDAR data have 2-3 times greater accuracy than do 7-parameter or 6-parameter transformations
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Habitual Sleep Quality Moderated the Effects of Sleep Deprivation on EmotionRegulation by Third-Person Self Talk: Event-Related Potential (ERP) andBehavioral Findings
The current study investigated the impact of sleep deprivation (SD) on the use of third-person self-talk, a relatively effort-less strategy, to regulate emotion. Twenty-four participants (age = 22.75 2.68, 54.17% male, 33.33% good sleepers) com-pleted a cue-picture ERP paradigm after normal sleep and SD conditions, in which they viewed negative or neutral stimuliand reflected on their feelings using either the pronoun I or their name (third-person). We calculated post-instruction latepositive potential (LPP) that has been found sensitive to emotion regulation strategies and closely related to amygdalaactivity. While poor sleepers showed greater LPP amplitudes overall, F(1,7) = 17.50, p = .004, SD only increased the LPPfor negative picture trials among good sleepers but not poor sleepers, F(1,7) = 5.37, p = .054, suggesting that the effect ofSD on emotion regulation using third-person self talk was moderated by habitual sleep quality
Land Subsidence Caused by Groundwater Exploitation in Yunlin, Taiwan
Source: ICHE Conference Archive - https://mdi-de.baw.de/icheArchive
VI-Band Follow-Up Observations of Ultra-Long-Period Cepheid Candidates in M31
The ultra-long period Cepheids (ULPCs) are classical Cepheids with pulsation
periods exceeding days. The intrinsic brightness of ULPCs are ~1
to ~3 mag brighter than their shorter period counterparts. This makes them
attractive in future distance scale work to derive distances beyond the limit
set by the shorter period Cepheids. We have initiated a program to search for
ULPCs in M31, using the single-band data taken from the Palomar Transient
Factory, and identified eight possible candidates. In this work, we presented
the VI-band follow-up observations of these eight candidates. Based on our
VI-band light curves of these candidates and their locations in the
color-magnitude diagram and the Period-Wesenheit diagram, we verify two
candidates as being truly ULPCs. The six other candidates are most likely other
kinds of long-period variables. With the two confirmed M31 ULPCs, we tested the
applicability of ULPCs in distance scale work by deriving the distance modulus
of M31. It was found to be mag. The large error
in the derived distance modulus, together with the large intrinsic dispersion
of the Period-Wesenheit (PW) relation and the small number of ULPCs in a given
host galaxy, means that the question of the suitability of ULPCs as standard
candles is still open. Further work is needed to enlarge the sample of
calibrating ULPCs and reduce the intrinsic dispersion of the PW relation before
re-considering ULPCs as suitable distance indicators.Comment: 13 pages, with 14 Figures and 4 Tables (one online table). AJ
accepte
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