This thesis focuses on the development of two new applications using ion concentration polarization (ICP): an out-of-plane microfluidic approach for water desalination and a method for concentration and transportation of charged analytes in paper-based biomedical diagnostic device. In the first work, we present an out-of-plane desalination approach using ICP. A depletion boundary separates salt ions and purified water into distinct vertically stacked layers. The out-of-plane design enables multiplexing in three dimensions, providing the functional density required for practical applications. The second work demonstrates an active control mechanism of target analytes in paper using ICP. Both external devices (with all functional units on one side of paper) and integrated paper microfluidic devices (by embedding all functional units in paper) were developed to concentrate and transport charged analyte molecules in the paper. We also demonstrate a new fabrication method of nanofluidic and hydrophobic barriers (nanoporous membrane patterning) in paper microfluidic device.

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This study aims to explore the various factors that influence the international joint venture (IJV) parent firms to use a specific control mechanism in an emerging market (EM). The study adopted a single case study design involving an IJV between a Nigerian firm as the local partner and a Chinese firm as the foreign partner. Data was collected through twenty semi structured interviews from both the parent firms and the IJV; and complemented by observations of the IJV activities, relevant information from newspapers; magazines; company brochures and newsletters; and website of the parent firms, IJV and the government regulating body. The study revealed that the design of formal and social control is influenced by a range of factors identified in the literature. This includes resource contribution and bargaining power, previous experience of the IJV managers, knowledge transfer, trust-building, environmental uncertainty, and institutional forces. In contrast to findings from existing studies, this study also reveals that a combination of factors can influence the use of a particular control mechanism. By examining the types of control exercised by each partner and the antecedent of each control type, this study complements prior research by incorporating insights from transaction cost theory, resource dependency theory, social exchange theory, institutional theory and organisational lerning perspective to provide a more integrative explanation of IJV control design. Specifically, it explains how one partner develops certain types of formal and social control according to its individual resource contribution and dependency and can adjust controls to achieve its various objectives.

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This dissertation is a primarily theoretical study of self-organization, through which a constellation of organizations can control the process of strategic adaptation in the paradigm shift. Curiously, existing theories about the control mechanism seem to be insufficient to address the problems of control seriously in the pre-paradigmatic state. The dissertation includes three main chapters of literature review, theoretical analysis, and case study. The extensive literature review provides a fertile foundation to support this study. The chapter of theoretical analysis aims to theorize about self-organization as a new control mechanism. The case study chapter seeks to address the new conceptual model and its application to the phenomenon. Consequently, the dissertation not only presents a detailed comparison of existing theories but also elaborates the new model of control mechanism. This study considers the phenomenon of manufacturing without a factory as the evidence of the controlled system without governance structure in the paradigm shift. Through the content analysis method, the case study analyzes how differently IBM and Apple, Inc. have controlled manufacturing processes entirely outsourced to external partners and why IBM failed the challenges while Apple could succeed. The theoretical analysis addresses why firms must manage external adjustment processes and be agile with the high capacity of information processing as a constellation of organizations grows. This study will shed lights on uncovering the management of postmodern organizations in the twenty-first century. / Business Administration/Strategic Management

The lack of interoperability between Pay‐TV service providers and a horizontally integrated business transaction model have compromised the competition in the Pay‐TV market. In addition, the lack of interactivity with customers has resulted in high churn rate and improper security measures have contributed into considerable business loss. These issues are the main cause of high operational costs and subscription fees in the Pay‐TV systems. This paper presents a novel end‐to‐end system architecture for Pay‐TV systems cooperating mobile and broadcasting technologies. It provides a cost‐effective, scalable, dynamic and secure access control mechanism supporting converged services and new business opportunities in Pay‐TV systems. It enhances interactivity, security and potentially reduces customer attrition and operational cost. In this platform, service providers can effectively interact with their customers, personalise their services and adopt appropriate security measures. It breaks up the rigid relationship between a viewer and set‐top box as imposed by traditional conditional access systems, thus, a viewer can fully enjoy his entitlements via an arbitrary set‐top box. Having thoroughly considered state‐of‐the‐art technologies currently being used across the world, the thesis highlights novel use cases and presents the full design and implementation aspects of the system. The design section is enriched by providing possible security structures supported thereby. A business collaboration structure is proposed, followed by a reference model for implementing the system. Finally, the security architectures are analysed to propose the best architecture on the basis of security, complexity and set‐top box production cost criteria.

6 Abstract Current international law contains several treaty instruments anchoring and regulating the area of human rights. It develops at both universal level, within the United Nations, and regional level, within special regional institutions. To make international human rights treaty effective, we must ensure it includes effective control mechanism that provides an efficient protection and promotion of human rights, thus ensure that the system has a positive impact on the enjoyment of the human rights by individuals. The quality of international human rights treaty depends on the quality of its control mechanism and its existence at all. The aim of this thesis is to present the international and regional human rights treaty system and how does it actually work. On the series of predetermined criteria I will try to evaluate the activity and practices of presented human rights treaties. The main part of the thesis represents a description of human rights treaty protection through the analysis of selected international human rights treaties. International human rights treaty protection takes place at the universal level, within the United Nations human rights treaty bodies, and at the regional level. In Europe within the Council of Europe, in America within the OAS, in Africa within the AU. In relation to...

Akustische Signale dienen vielen Tierarten als Mittel zur Partnerfindung. Diese Tiere müssen ihre Entscheidung für den besten Paarungspartner durch die Integration der Parameter verfügbarer Signale treffen. Das Wahlverhalten weiblicher Grillen basiert auf der Attraktivität des zeitlichen Musters des männlichen Gesangs und auf dessen Intensität. Diese Eigenschaften korrelieren nicht zwangsweise positiv, daher wird sich kein Männchen in einer Aggregation von singenden Männchen als überragend abheben und somit wird dem Weibchen die Entscheidung erschwert. Die vorliegende Arbeit beschäftigt sich mit der Frage wie die relevanten Merkmale des männlichen Gesangs während der Entscheidungsfindung des Weibchens integriert werden. 6 Arten von Feldgrillen wurden in nicht-Wahl- und Wahlexperimenten hinsichtlich ihrer Antworten und Präferenzen für männliche Signale, welche sich in Pulsrate, Modulationstiefe, Intensität, Anordnung der Chirps während der Wiedergabe und der zeitlichen Verschiebung zweier Signale zueinander unterschieden, getestet. Des Weiteren wurde durch Transitivitätstests untersucht, ob dem Wahlverhalten weiblicher Grillen rationale oder vergleichende Entscheidungsmechanismen zugrunde liegen. Zusammenfassend zeigen die Ergebnisse, dass die Verarbeitungsmechanismen, welche der Entscheidungsfindung bei weiblichen Feldgrillen zugrunde liegen, in den untersuchten Arten ähnlich sind. Die Lokalisierung des Signals ist nicht unabhängig von der Erkennung. Neben einem generellen Verarbeitungsschema wurden zwischen den einzelnen untersuchten Arten charakteristische Unterschiede in der Mustererkennung, der Verarbeitung der Signalintensität und der Intensitätsgewichtung festgestellt. Jedoch wiesen nah verwandte Arten ähnlichere Präferenzen auf, als nicht nah verwandte Arten. Die Tests zur Transitivität der Präferenzen weisen auf vergleichende Entscheidungs-mechanismen hin und widersprechen einer rationalen Partnerwahl. / In many animals acoustic signals serve for mate attraction. They thus need to make a decision about which is the best mating partner in a choice situation by integrating the cues of the available signals. Choice behaviour in female crickets is based on the attractiveness of the temporal pattern of a male’s calling song and on its intensity. The parameters of a calling song are not necessarily positively correlated and no male will emerge as superior in an aggregation of singing males. The present thesis addresses the question on which cues decision making is based and how these relevant cues of a male’s song are integrated during the decision process of a female. To this aim no-choice and choice experiments with 6 species of field crickets were conducted. Experiments systematically varied pulse rate, modulation depth, intensity, chirp/trill arrangement and temporal shifts of synchronously presented signals. Furthermore, tests for transitivity of preferences examined if female choice behavior is based on rational or comparative decision making mechanisms. In summary, the results reveal that sensory processing underlying female decisions is similar in the 6 species studied here. Incoming signals are analyzed separately in bilaterally paired networks with parallel pathways for signal attractiveness and signal intensity. A gain-control mechanism fuses the outcome of both pathways and signal intensity is weighted by pattern attractiveness. Thus localization is not independent from signal recognition. Despite this general scheme remarkable characteristic differences between species were observed in pattern recognition, processing of signal intensity and weighting of signal intensity. Closely related species exhibited more similar preferences than unrelated species. Furthermore the tests for transitivity of preferences indicated that females use comparative decision making mechanism and contradicted rational mate choice.

A wireless local area network (WLAN) provides high bandwidth to users in a limited geographical area. This network faces certain challenges and constraints that are not imposed on their wired counterparts. They are: frequency allocation, interference and reliability, security, power consumption, human safety, mobility, connection to wired LAN,service area, handoff and roaming, dynamic configuration and the throughput. But the wireless medium relies heavily on the features of MAC protocol and the MAC protocol is the core of medium access control for WLANs. The available MAC protocols all have their own merits and demerits. In our research works, we propose a hybrid MAC protocol forWLAN. In the design, we have combined the merits of the TDMA and CDMA systems to improve the throughput of the WLAN in a picocellular environment. We have used the reservation and polling methods of MAC protocols to handle both the low and high data traffics of the mobile users. We have strictly followed the standards specified by IEEE 802.11 for WLANs to implement the designed MAC protocol. We have simulated the hybrid TDMA/CDMA based MAC protocols combined with RAP (Randomly Addressed Polling) for Wireless Local Area Networks. We have developed a closed form mathematical expressions analytically for this protocol. We have also studied the power control aspects in this environment and we derived a closed form mathematical expressions analytically for this power control technique. This hybrid protocol is capable of integrating different types of traffic (like CBR,VBR and ABR services) and compiles with the requirements of next-generation systems.The lower traffic arrival is dealt with the Random Access and the higher traffic arrival is with the Polling methods. This enables us to obtain higher throughput and lowmean delay performance compared to the contention-reservation-based MAC schemes. The protocol offers the ability to integrate different types of services in a flexible way by the use of multiple slots per frame, while CDMA allows multiple users to transmit simultaneously using their own codes. The RAP uses an efficient "back-off" algorithm to improve throughput at higher arrival rates of user's data. The performance is evaluated in terms of throughput, delay, and rejection rate using computer simulation. A detailed simulation is carried out regarding the maximum number of users that each base station can support on a lossy channel. This work has analyzed the desired user's signal quality in a single cell CDMA (Code Division Multiple Access) system in the presence of MAI (Multiple Access Interference). Earlier power control techniques were designed to assure that all signals are received with equal power levels. Since these algorithms are designed for a imperfect control of power, the capacity of the system is reduced for a given BER (Bit-Error Rate). We proposed an EPCM (Efficient Power Control Mechanism) based system capacity which is designed for the reverse link (mobile to base station) considering the path loss, log-normal shadowing and Rayleigh fading. We have simulated the following applications for the further improvement of the performance of the designed MAC protocol:Designed protocol is tested under different traffic conditions. The protocol is tested for multimedia traffic under application oriented QoS requirements. Buffer Management and resource allocation. Call Admission Control (hand-offs, arrival of new users). The adaptability to the variable nature of traffic.The propagation aspects in the wireless medium. The proposed MAC protocol has been simulated and analysed by using C++/MATLAB Programming in IBM/SUN-SOLARIS UNIX environment. The results were plotted using MATLAB software. All the functions of the protocol have been tested by an analysis and also by simulation. Call admission control function of the protocol has been tested by simulation and analysis in a multimedia wireless network topology and from analysis we found that at low traffic the throughput is high and at high traffic the throughput is kept constant at a reasonable high value. The simulation results also justify/ coordinate the analysis results. Dynamic channel allocation function of the protocol was tested and analysed and the coordinated results show that at low traffic, high throughput and at high traffic the throughput is constant. Buffer management function of the protocol simulation shows the results that the packet loss can be controlled to a minimum by adjusting the buffer threshold level at any traffic conditions. Maintenance of data transfer during the hand-offs function was simulated and the results show that the blocked calls are less during low traffic and at high traffic the blocked calls can be kept constant at low value. Thus, the proposed model aimed at having high throughput, high spectral efficiency, low delay, moderate BER and moderate blocking probability. We have considered a pico cell with a maximum of several users and studied the power efficiency of combined channel coding and modulation with perfect power controlled CDMA system. Thus our simulation of the "software radio" has flexibility in choosing the proper channel coders dynamically depending upon the variations of AWGN channel.

This study extends research on pricing methods of Multinational Corporation (MNC) from the financial aspect to managerial perspective, creates the term managerial mechanisms and examines theories with actual organizational changes applied by the case company, the leading IPC provider, Company A. In this research, the researcher first identifies determinants of E2E pricing (market pricing), then defines the five components (organizational structure, information sharing, coordination mechanisms, management control system, and authority delegation) and lists elements within each component to form the managerial mechanism model between HQ-Subsidiary as the reference to align with market price determinants. With the degree of centralization being the core of the model, the analysis shows that information sharing between HQ-Subsidiary is the key to a successful E2E pricing decision; to do so an MNC has to have an organizational goal in parallel with subsidiary interests, and proper authority delegation while exerting control and coordination with flexibility. This research presents that organizational changes made by Company A in coordination with E2E pricing method do follow the managerial mechanism model proposed by the researcher. Specifically, the analysis first describes the pricing method and managerial mechanisms of the case company; second, managerial issues are recognized and linked with the model developed by the researcher; finally, corresponding changes Company A made are examined by literature theories. This research also reveals that the application of proper measures is simply the initiative of organizational changes; an MNC has to anticipate internal reluctance in order to carry out the optimal result of its managerial mechanisms.