ITC/USA 2006 Conference Proceedings / The Forty-Second Annual International Telemetering Conference and Technical Exhibition / October 23-26, 2006 / Town and Country Resort & Convention Center, San Diego, California / The optimum detector for shaped offset QPSK (SOQPSK) is a trellis detector which has high complexity (as measured by the number of detection filters and trellis states) due to the memory inherent in this modulation. In this paper we exploit the cross-correlated, trellis-coded, quadrature modulation (XTCQM) representation of SOQPSK-TG to formulate a reduced complexity detector. We show that a factor of 128 reduction in the number of trellis states of the detector can be achieved with a loss of only 0.2 dB in bit error rate performance as compared to optimum at P(b) = 10^(-5).

ITC/USA 2009 Conference Proceedings / The Forty-Fifth Annual International Telemetering Conference and Technical Exhibition / October 26-29, 2009 / Riviera Hotel & Convention Center, Las Vegas, Nevada / Multi-h Continuous Phase Modulation (CPM) is a promising waveform for aeronautical telemetry because it is a compact spectrally efficient constant amplitude modulation. It has been selected as the Advanced Range Telemetry (ARTM) tier II waveform owing to these qualities. However, it is also a complicated waveform that has the reputation of suffering from complex demodulation processing and high sensitivity to transmission impairments and in particular synchronization aspects. In this paper we review a set of complexity reduction techniques that intend to bring this waveform into the domain of operational telemetry waveform, by allowing low complexity hardware implementation without sacrificing performance or robustness. Most techniques are adjustments of recent literature results, concerning both demodulation and synchronization. Computer simulation of a receiver implementing theses techniques shows negligible performance loss compared to optimal coherent demodulation with perfect synchronization. Hardware implementation confirms that nearly optimal performance can be achieved with hardware resource currently available in middle range FPGAs.

Background: Exposure of non-sustainable practices put MNCs in bad light, hurting their brand image. Therefore, it is of great importance to ensure supplier sustainability upwards the chain. Vast focus has been put on the first-tier suppliers. However, there are few studies that have investigated the issue of second-tier supplier sustainability, and there are many real life examples of firms’ who failed to ensure second-tier supplier sustainability. Hence, the need for further investigation within the subject.   Purpose: The purpose of this study was to investigate how two Scandinavian-based MNCs ensure second-tier supplier sustainability within their supply chain.   Methodology: This thesis is conducted with an inductive approach, collecting qualitative data through semi-structured interviews and archival research, at two independent companies. Thus, a multiple case study. Empirical findings were analyzed through a template analysis. Based on the theoretical framework and formulated research questions, categories have been derived, constructing the outline for our empirical findings and analysis.   Conclusions: (I) Social and cultural distance are major determinants settling which second-tier suppliers being regarded as critical. Conclusively, these two factors are the major determinants identifying whom to prioritize. Furthermore, IT is recognized as a vital and beneficial tool to utilize when mapping the network of second-tier suppliers. (II) In order to achieve second-tier supplier compliance of CoC, “the grey area approach” is identified as the used approach by investigated companies. Further, long-term relationships with first-tier suppliers are a major key in order to ensure second-tier sustainability in long-term perspective. (III) Last but not least, first-tier supplier network investigation is regarded prior to choosing a first-tier supplier. However, it is nothing decisive since other factors are more important in the process.

<p>Nowadays there are different forms and technologies for implementing web applications without much concern for their architectural model. Without a good and stable architecture those applications may fail during their operations. Thus, this thesis project is focused on exploring different architectural models for creation of web solutions. Moreover, this thesis project is also part of the collaboration between Linnaeus University and Ljungby municipality with the aim to create a system that grow up local economies by showing the local producers’ locations, providing customers with different information about the products etc. The result of the thesis shows that an application can be developed in various architectural models. The choice of one architectural model over another depends on the project needs. I found that by using ASP.NET MVC framework there is more separation of concerns, easy maintenance of the code, and unit testing for an application. Search engine of find local food system can be used to search for different local producer’s location and their services.</p><p> </p>

A research report submitted to the Faculty of Management, University of the Witwatersrand, in partlal fulfillment of the requirements for-tne degree of Master of Management (in the field of Public and Development Management). / This research report develops a review framework for metropolitan local government in Greater Johannesburg and South Africa, through the extrapolation of the key aspects of three generic models of metropolitan local government. These models are classified as confederal. tow-tier and unicity type of city government. The need for the review of local government in Greater Johannesburg is illustrated through an historical overview or events in the transformation of local government since 1990, The crucial clements or the generic models arc also described in terms of metropolitan evaluation criteria and area variables. Evaluation criteria are defined as essential strategic indicators of performance, whilst area variables are seen as those factors which contribute to the specific structure and nature of metropolises in South Africa. Tile generic models are compiled in the format of a review matrix. which take the crucial elements thereof, as well as the evaluation criteria and area variables into account. Compatibility with the evaluation criteria are measured as being either low, medium or high. The conclusion is made that either an integrating two-tier system or metropolitan government or an unicity with limited delegation to community councils represent the optimal alternative for Greater Johannesburg. / AC2017

Nowadays there are different forms and technologies for implementing web applications without much concern for their architectural model. Without a good and stable architecture those applications may fail during their operations. Thus, this thesis project is focused on exploring different architectural models for creation of web solutions. Moreover, this thesis project is also part of the collaboration between Linnaeus University and Ljungby municipality with the aim to create a system that grow up local economies by showing the local producers’ locations, providing customers with different information about the products etc. The result of the thesis shows that an application can be developed in various architectural models. The choice of one architectural model over another depends on the project needs. I found that by using ASP.NET MVC framework there is more separation of concerns, easy maintenance of the code, and unit testing for an application. Search engine of find local food system can be used to search for different local producer’s location and their services.

<p>COM+ and Enterprise JavaBeans are two component-based technologies that can be used to build enterprise systems. These are two competing technologies in the software industry today and choosing which technology a company should use to build their enterprise system is not an easy task. There are many factors to consider and in this project we evaluate these two technologies with focus on scalability and the dependability aspects security, availability and reliability. Independently, these technologies are theoretically evaluated with the criteria in mind.</p><p>We use a 4-tier architecture for the evaluation and the center of attention is a persistence layer, which typically resides in an application server, and how it can be realized using the technologies. This evaluation results in a recommendation about which technology is a better approach to build a scalable and dependable distributed system. The results are that COM+ is considered a better approach to build this kind of multi-tier distributed systems.</p>

The objective of this research is to develop physical design methodologies for monolithic 3D ICs and use them to evaluate the improvements in the power-performance envelope offered over 2D ICs. In addition, design-for-test (DfT) techniques essential for the adoption of shorter term through-silicon-via (TSV) based 3D ICs are explored. Testing of TSV-based 3D ICs is one of the last challenges facing their commercialization. First, a pre-bond testable 3D scan chain construction technique is developed. Next, a transition-delay-fault test architecture is presented, along with a study on how to mitigate IR-drop. Finally, to facilitate partitioning, a quick and accurate framework for test-TSV estimation is developed. Block-level monolithic 3D ICs will be the first to emerge, as significant IP can be reused. However, no physical design flows exist, and hence a monolithic 3D floorplanning framework is developed. Next, inter-tier performance differences that arise due to the not yet mature fabrication process are investigated and modeled. Finally, an inter-tier performance-difference aware floorplanner is presented, and it is demonstrated that high quality 3D floorplans are achievable even under these inter-tier differences. Monolithic 3D offers sufficient integration density to place individual gates in three dimensions and connect them together. However, no tools or techniques exist that can take advantage of the high integration density offered. Therefore, a gate-level framework that leverages existing 2D ICs tools is presented. This framework also provides congestion modeling and produces results that minimize routing congestion. Next, this framework is extended to commercial 2D IC tools, so that steps such as timing optimization and clock tree synthesis can be applied. Finally, a voltage-drop-aware partitioning technique is presented that can alleviate IR-drop issues, without any impact on the performance or maximum operating temperature of the chip.

Με την γρήγορη ανάπτυξη πολλών δικτυακών εφαρμογών (Internet application and services) υπάρχει η τάση αυτές οι εφαρμογές να είναι κατανεμημένες και πολυστρωματικές (multi-tier services). Η μοντελοποίηση και η παρακολούθηση της απόδοσης της λειτουργίας αυτών των υπηρεσιών παραμένει ένα ενδιαφέρον και αναπτυσσόμενο θέμα. Σκοπός αυτής της διπλωματικής είναι η προσομοίωση και η μοντελοποίηση multi-tier εφαρμογών και η μελέτη αλγορίθμων ανακάλυψης κανόνων επικοινωνίας μεταξύ των στοιχείων του δικτύου που απαρτίζουν τις εφρμογές αυτές. Για την προσομοίωση της υπηρεσίας χρησιμοποιήθηκε το περιβάλλον του προσομοιωτή OPNET. / Nowadays network applications tend to be distributed and multi-tier due to rapid development of such applications. Modelling and monitoring performance of these services is a very interesting topic. My work targets to simulate and model multi-tier applications and present techniques that discover the hidden relationships among components of a network that consist of parts of specific applications. The simulator I used was OPNET.

Multi-tiered systems of behavioral support are a promising approach for schools looking to maximize their resources while at the same time ensuring that every student's social and behavioral needs are being met. A commonly used Tier II intervention is Check-in/Check-out (CICO), wherein students check in with an adult before and after school and then receive feedback from their teachers throughout the day using a point card. Although CICO has been well supported through previous research, the intervention does require a fair amount of teacher time after each class period, and it also leaves students entirely reliant on the teacher for feedback regarding their behavioral performance throughout the day. The current study therefore examined the effectiveness and feasibility of integrating self-monitoring into CICO, called Student-Guided CICO (SG-CICO). Three elementary students were taught how to self-monitor their behavior after each class and then compare their ratings to those provided by the teacher. Teacher accuracy checks were faded back once students became consistently accurate with their self-ratings. An ABABC single subject design was used to evaluate the effect SG-CICO had on each participant's on-task and disruptive behavior. Each participant displayed (to varying degrees) increased on-task responding and reductions in disruptive behavior following implementation of SG-CICO. Students reported enjoying their participation in SG-CICO, however the acceptability of SG-CICO was met with mixed reactions from staff. Conceptual implications of these results along with a description of study limitations and directions for future research are provided.