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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
921

A Methodology for Designing Flexible Report for On-Line Analytical Processing

Hsia, Tse-Chih 27 January 2004 (has links)
Due to the increasing global competition in today¡¦s business environment, current Transaction Processing Systems and Management Information Systems can no longer satisfy the enterprise¡¦s needs. Mangers need to analyze data from different views to recognizing business status, making decisions, and setting up the policies. To support such works, many information systems and technologies are developed including Decision Support Systems, Executive Information Systems, data warehouses, and On-Line Analytical Processing (OLAP). The implementation of OLAP and data warehousing project are expensive and risky. The results of implementing OLAP and data warehousing in most of the organizations do not, however, always prove a success. The common problem occurs in the requirement analysis phase when analyzing the dimensions and hierarchical relationships for OLAP. The user requirement can not be defined completely and the developers often need to modify or reconstruct the dimensions and hierarchical relationships to meet the user¡¦s changing needs. This is an enormous burden to the system developers. Although many tools with OLAP provide the flexibility for user creating analytical reports by using predefined dimensions and hierarchical relationships. However, a methodology for designing flexible report for OLAP to support ad hoc analysis is still lacking. This study proposes a methodology that is developed for designing flexible report for OLAP, which presents the dimensions and hierarchical relationships by visualized meta-templates and templates to help users create analysis reports. The methodology provides the flexibility not only in representing dimensions and hierarchical relationships for OLAP, but also in producing flexible reports. With such flexibility, the users can create analytical reports to support ad hoc analysis by choosing appropriated meta-template and template easily.
922

The research of green vender rating system¡GThe study of IC assembly industry.

Tsai, Shu-fang 05 July 2005 (has links)
As the awareness of environment consciousness, European Union passed the The Waste Electrical and Electronic Equipment Directive(WEEE) Directive on October, 2002. According to this directive, private households will be able to return their WEEE to collection facilities free of charge and producers(manufacturers, sellers, distributors) will be responsible for financing these facilities from August, 2005. After that, EU passed The Restriction of Hazardous Substances in Electrical and Electronic Equipment (RoHS) Directive into law. It affects manufacturers, sellers, distributors and recyclers of electrical and electronic equipment containing lead, cadmium, mercury, hexavalent chrome, polybrominated biphenyl (PBB) and polybrominated diphenyl ether (PBDE). After 2006 the use of these materials will be banned in new products sold in Europe. The execution of these two directives will force electronic industry change the attitude that place importance on quality specifications to increase some environmental specifications. Some IC assemblying companys started to implement green supply chain and establish green purchasing specifications to follow the market trend. Vender selection is very important portion in the supply chain management. Base on the green purchasing request, the criterions also need to be revised. This research is trying to establish the green vender selection criterions and find out the weighted point of each criterions by Analytical Hierarchy Process(AHP) method. The purpose of this research is to set up a green vender rating system that can be applied to the IC assembly industry.
923

Organizational attractiveness to the job seeker¡Gthe application of Analytic Hierarchy Process

Hsu, Chia-Hsi 16 January 2006 (has links)
Human resource is a kind of organization competition; it may be a key part for organization to survive in the market. For job seekers, what are the contents that they would most like to know and what kinds of factors will influence their willing toward their jobs? This research focuses on the social freshmen, utilizes the method of Analytic Hierarchy Process to get the organizational attractiveness for the job seekers, and to get the main point for social freshmen for their first job. In this research, through analyzing the data of the questionnaires, the results are as below: 1.Most social freshmen consider that whether or not their interests match with the job contents. 2.Social freshmen put the compensation in the first place. 3.Social freshmen who want to be in Service Industry expected for the salary. For male, they care more about the system of rewards as compared with female that the system benefits will influence their willing. 4.Social freshmen who want to be in Financial Industry, both male and female, think the salary is the chief job consideration. Moreover, male freshmen take the scale of the organization as a key factor for their job choice as compared of female take whether the job stable or not will influence their willing. 5.Social freshmen who want to be in High-Technical Industry, excepted for the compensation. Male want to the job to be matched with their interests and female depend on the job contents.
924

none

Yang, Ven-Chen 06 June 2002 (has links)
Abstract Following the development of human economical activity, people have been gathering in the urban area. People¡¦s needs for space, environment, safety, convenience are increasing. People request not only just arrival at destination, but also a more comfortable, safer, more environment protection, more humanized transportation. So, for that reason, rolling stock transportation is becoming more and more important, and how to develop a comfortable, safe, environment - protective, humanized rolling stock is a very important issue today. Taiwan rolling stock market is very restrictive because it is close and small. Few people have studied in this field. For the coming 10 years, the situation will be changed because of the High Speed Railway system, Light Rail Track system, and Metro system. TRA Commuter system are flourishing. Also the government supports the Industrial Cooperation Program. In the Paper, I introduce the TQM concept from some Master such as Deming, Bill Creech, Crosby, Takuchi, and some TQM prize criteria, setting up a researching structure following the Bill Creech ¡§ Five Pillars of TQM¡¨, taking Saaty AHP (Analytical Hierachy Program) as a tool, consulting the expert of the rolling stock, seeking the priority of major factor of rolling stock researching quality management system.
925

First law energy balance as a data screening tool

Shao, Xiaojie 16 August 2006 (has links)
This thesis defines the Energy Balance Load ( BL E ) as the difference between the heating requirements plus the electric gains in the building and the cooling coil loads. It then applies a first law energy balance in conjunction with the concepts of analytical redundancy (AR) and trend checking to demonstrate that measured values of BL E can be compared with the simulated characteristic ambient temperature-based BL E to serve as a useful tool to identify bad data. Uncertainty and sensitivity analysis are introduced to analyze the impact of each building or system parameter to the simulated values of BL E . A Visual Basic for Application (VBA) program has been developed through this research work, which applies the methodology illustrated in this thesis to automatically prescreen the measured building energy consumption data with the inputs of several key parameters. Through case studies of six on-campus buildings, the methodology and the program successfully identified monitored consumption data that appears to be erroneous, which may result from incorrect scale factors of the sensors and the operational changes to the building that may enormously affect the key parameters as the simulation inputs. Finally, suggestions are given for the on-line diagnostics of sensor signals.
926

Ultrasonic Enrichment of Microparticles in Bioaffinity Assays

Wiklund, Martin January 2004 (has links)
<p>This Thesis describes applications of standing-waveultrasonic traps for sensitive biomedical analysis. Two majorapproaches have been investigated where functionalizedmicroparticles are employed in bioaffinity assays. In the firstapproach, a longitudinal flow-through capillary ultrasonic trapis used for size selective separation and retention ofdifferently sized microparticles. This device may be used fordetection of particle pairs, which are formed during theinitial stage of microparticle immunoagglutination. Theperformance of the capillary ultrasonic trap for enrichment andcounting of particle pairs is characterized by a model systemof differently sized homogeneous fluorescent microparticles.The selectivity of this detection method relies on thecharacteristics of the force field inside the narrow borecapillary, which is formed by the competition between acousticradiation forces and viscous drag forces from the fluidflow.</p><p>The second approach is an investigation of the potential forsensitive protein quantification by combining ultrasonicenrichment and confocal laser-scanning fluore-scence detection.Here, the design of the ultrasonic trap is tailor-made for theimaging properties of a confocal microscope, resulting inrearrangement and concentration of suspended microparticlesinto single, dense layers that is scanned by a focused laserbeam. The bioaffinity assay employed is based on detecting thetarget molecules via fluorescent tracer antibodies immobilizedon the surface of each single particle.</p><p>The final part of the work presented in this Thesis is athorough investigation of both the biochemical and the physicalproperties that determine the performance and potentialsensitivity of the particle doublet assay. In thisinvestigation, a novel approach is presented for doubletdetection, namely fluorescence-microscopy-based classificationof doublets and singlets by a pattern recognition algorithm.The experimental results are also compared with the resultsfrom flow cytometry analysis. Furthermore, the initial stage ofimmuno-agglutination is theoretically investigated by a modelbased on diffusion-limited agglutination combined with a stericfactor determined by the geometry of the bio-molecules and theamount of specific and non-specific binding that is present inthe particular assay.</p><p>To conclude, the Thesis presents several approaches wherestanding-wave ultrasonic fields may be used for sensitiveparticle-based biomedical analysis. The best prospect for highsensitivity was found for the confocal laser-scanningfluorescence detection system, with a detection limit of theorder of 10<sup>-14</sup>M. On the other hand, the agglutination-basedassay may give sensitivity of the order of 10<sup>-11</sup>-10<sup>-10</sup>M with very simple and inexpensiveequipment.</p>
927

Improved Techniques for Sampling and Sample Introduction in Gas Chromatography

Bonn, Jonas January 2008 (has links)
<p>Sampling and sample introduction are two key steps in quantitative gas chromatography. In this thesis, a development of a previously described sampling technique as well as a novel concept for sample introduction in gas chromatography are presented. The thesis is based on two papers.</p><p>Paper I describes a method for preparing physically mixed polymers for use as sorbent phases in open tubular trapping of gaseous analytes. The concept is based on mechanical disintegration and mixing of solid or liquid poly(ethylene glycol), PEG, into poly(dimethylsiloxane), PDMS, in a straightforward manner. The resulting mixture exhibits a higher affinity towards polar analytes, as compared to pure PDMS.</p><p>Paper II describes a novel approach to liquid sample introduction with the split/splitless inlet, used in gas chromatography. Classical injection techniques struggle with discrimination of high boiling analytes and poor repeatability of the injected amount of analytes. The presented injection technique utilizes high voltage to obtain a spraying effect of the injected liquid. The spraying effect can be achieved with a cold needle, which is unprecedented for gas chromatographic injections. The cold needle spraying results in highly repeatable injections, free from discrimination of high boiling analytes.</p>
928

Molecular recognition and size control of nanosized self-assembled polyoxometalate structures.

Kistler, Melissa L. January 2009 (has links)
Thesis (Ph.D.)--Lehigh University, 2009. / Adviser: Tianbo Liu.
929

Design, fabrication, and evaluation of micro gas chromatography columns /

Radadia, Adarsh D., January 2009 (has links)
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2009. / Source: Dissertation Abstracts International, Volume: 70-06, Section: B, page: 3481. Adviser: Richard I. Masel. Includes bibliographical references. Available on microfilm from Pro Quest Information and Learning.
930

Octasubstituted phthalocyanine assemblies: Characterization, polymerization, and patterning

Zangmiester, Rebecca Anne January 2001 (has links)
This dissertation explores the characterization of new phthalocyanine materials, and the processability of these materials with regard to thin film structures envisioned for use in organic based electronic devices. Highly ordered, coherent molecular assemblies are formed by Cu centered benzyloxyethoxy-substituted phthalocyanines. The influence of molecular aggregate interactions with solid supports, based on phenyl-phenyl interactions, manifests itself in large changes in wettability, and also in molecular orientations within those molecular aggregates. Selective deposition of these Pc assemblies was achieved based on chemical interactions with a heterogeneous surface. A facile process of creating alternating hydrophobic/hydrophilic regions on a Au substrate surface through a combination of microcontact printing and electropolymerization techniques (μCP/EP) was demonstrated. Optimization of the hydrophobic channel bottom regions with a phenyl terminated dopant results in patterned phthalocyanine stripes up to 500 μm in length. The substitution of a Co metal center does not appreciably influence the properties of the benzyloxyethoxy-substituted phthalocyanine material, although the lone pair electron, in the d(z)² orbital perpendicular to the Pc macrocycle, appears to be responsible for differences in molecular orientation. The ability of the Co metal to coordinate ligands (i.e. O₂) is particularly evident in electrochemical data taken of this material. Two new photoreactive phthalocyanines, with styryl- and cinnamyl-terminations, result in the formation of new materials, whose preliminary characterization is presented. The photoexcited polymerization of the styryl-substituted material resulted in formation of a 1-dimensional rod-like polymer material, with a mean rod length of 72 nm. The conversion percentages for this material routinely reached 30%, and are expected to improve with purer monomeric materials. The photolysis of the cinnamyl-terminated material routinely reach 70% conversion, and resulted in an insoluble material, that allows for photopatterning. Conventional interdigitated microelectrode (IME) measurements made on these materials show conductivities as high as ca. 10⁻⁸Ω⁻¹·cm⁻¹, and mobility values as high as 10⁻³ cm²·V⁻¹s⁻¹. These charge carrier properties, combined with the selective deposition possibilities (i.e. using patterned substrates and/or photolysis techniques) make this class of materials desirable for further investigation and applications in organic based electronic devices.

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