Country Case Study – Nepal

human development, climate change

Reflection measurement of building materials at microwaves

Abstract. Radio waves interact differently with different materials. The knowledge of reflection and transmission characteristics of the electromagnetic waves through and from the building walls is the key in designing a radio propagation model. The dielectric properties of the material determine the behavior of reflection and transmission of the electromagnetic waves. Therefore, an oblique reflection model is implemented in this thesis to estimate the dielectric properties of various walls at frequency range of 0.7–7 GHz (6.3 GHz bandwidth). The measurement setup consists of a four-port vector network analyzer, two wideband dual-polarized cross-shaped Vivaldi antennas and two 8 m long coaxial cables. Measurements for parallel and perpendicular polarizations are achieved simultaneously by using the dual-polarized antennas. Time-domain gating is applied to separate the desired reflection and eliminate all other multiple reflections from the environment and to suppress the Line-of-Sight component from the delayed response. The estimation of dielectric property of a material is an optimization problem where a suitable objective function is minimized to get the appropriate value. A theoretical model is implemented, so that the minimum difference between the theoretical and measured absolute value of reflection coefficient gives an estimated value of complex relative permittivity. The non-linear least squares algorithm is used for optimization purpose. The real and imaginary part of complex relative permittivity is investigated in this thesis. The real part signifies the amount of electric energy stored in a material, and is called dielectric constant whereas the imaginary part is called the loss factor, which signifies the dissipation of the radiated energy. The estimated values are in good agreement with the values found in the literature. The estimated dielectric properties in this study, such as dielectric constant, loss tangent and Brewster angle of the various materials can be utilized further in designing radio propagation models for similar environments

Democratising Micro-Hydel : Structures, Systems and Agents in adaptive technology in the Hills of Nepal

Hydel technology inNepalis shaped by macro and micro power policy models. While the state-controlled grid system supplies energy nationally, micro-hydel have been romanticised and perceived as 'community-oriented' alternative system of rural electrification. The system has been designed with the premise that this is the 'appropriate' form of power supply, often overlooking the existing power bases and the 'adaptive' features of these hydraulic, transformative and evolutionary ensembles. Significant development of micro-hydel inNepalhas placed this technology in the forefront of these alternative forms of power supply. However, very little research has been done on the evolution of the micro-hydel sector or on the impact of this technology in the rural areas ofNepal. Out of the country's total population of 22 million, only 1.1 million rural people have access to electricity, the majority of them through the 'renewal energy'-based small capacity micro-hydel.This study documents micro-hydel technology realities and hydropower policy inNepalthrough an inter-disciplinary field study of four hydel systems in the Kabhre Palanchowk district, in the central hills ofNepal. Most of the plants were implemented under the Rural Energy Development Programme (REDP), supported by UNDP. Three of these systems are in the micro-hydel category for supplying electricity to local communities and one is in the medium category, which also feeds the national grid. The sites studied range from State-run to community-run 'decentralised' systems involving a number of institutions and a variety of institutional approaches. These sites also show interesting interface with irrigation and energy water users. Each of these four studies looks at how technology can be designed to transform and evolves, to provide the wanted output and accepted governance. These case studies reflect how and why different levels of technological adaptation have come into being beyond a 'hydraulic ensemble' and whether 'technological democracy' is achieved through these adaptations. The study focuses on 'community-oriented micro-hydel systems' to study the systems that not only generate electricity for a community but also are shaped by it. This research also addresses the interface between local power provision and water resource management within the sites of investigation.This thesis is divided into nine chapters. Chapter 1 sets the stage for the analytical framework of the arguments presented. Chapters 2 and 3, analysing at the societal level, provide broader historical and political policy perspectives and the social actions surrounding them. Chapter 3 particularly looks at the social changes and responses as the research area exploded into local action generated by the Maoist movement during the period of field research. This chapter shows how identity and violence become embedded and inter-linked with rural politics and hydel technology to reinforce the struggles for equity and development. Chapters 4 to 8 present the case studies and examine the different trajectories of micro-hydel technology choice, implementation and adaptation by studying the interactions of structures, systems and agents in the materialisation and functionality of designs. Chapter 4 shows how communities have innovated and adapted to maintain a 12 kW capacity cross-flow turbine, a design developed by a national manufacturer. Chapter 5 examines the interfaces of 8 kW capacity propeller turbine installed and implemented under an R and D initiative and the adaptation of the community around this design. Chapter 6 examines the various networks, agents and actions in the materialisation of the Pico Power Pack (PPP) of 4.2 kW capacity developed by a foreign designer but manufactured locally. By studying the historical shaping of the early intervention of State hydropower plant that uses Francis Wheels to generate2.4 MW electricity, designed and implemented by Russian technical assistance,chapter 7 provides insights on comparative design choices, both on grid versus non-grid intervention and on grid-system evolution. All these four case study sites are linked to theRoshiRiversystem. The structure-system-agent linkages in the case study chapters are scrutinised to show different coalitions and sequences of actions around and within the technology, to transform the original devices and establish working practices. By charting an interdisciplinary technography of hydel systems, these chapters examine how the sociotechnical knowledge systems have been built, embedded, adapted and shaped within the community by various design networks. In all these chapters, this research juxtaposes why and how things transform. Subsequently, Chapter 8 explores the extent to which hydraulic, transformative and evolutionary mechanisms interface, adhering to the basic levels of operational, socio-political and financial accountability. This chapter introduces the concept of constitutional accountability, one that is guided by moral and political responsibilities and shows that this level can be strengthened inNepal.The final chapter, Chapter 9, revisits the key concepts discussed in the preceding chapters, bearing in mind that democratic technology is shaped by society and humans where technological democracy adapts, transforms and evolves within the field of 'democracy'. This chapter discusses the key messages and contributions of this research to policy, practice and theory, and concludes with a suggested agenda for reform forNepal.This thesis is based on the central argument that design of technology is an outcome situated within the triadic interfaces of structures, systems and agents. The study shows that hydel technology inNepalillustrates significant characteristics of authoritarianism in design. Against a backdrop of myriad design networks influences by donors and private manufacturers, this thesis shows that the spread of democratic institutions does not necessarily signify the spread of democratic technology. This study suggests that 'democratising technology' require creation of required political spaces for discourse, recognising contestations and building and re-building of democratic institutions by adhering to the basic principles of accountability

Integrating biodiversity and ecosystem services into the economic analysis of agricultural systems

Based on existing literature, this paper outlines the relationships between biodiversity, ecosystem services and food security. It additionally reviews tools which can be used to integrate biodiversity and ecosystem services into analytic frameworks to allow a better understanding of the trade-offs between different agricultural systems and their ecosystem service provisioning, as well as the resulting impact on productivity and human well-being

Regulation of Corticotropin-Releasing Factor-Binding Protein Expression in Amygdalar Neuronal Cultures

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/73102/1/j.1365-2826.1999.00413.x.pd

Guide to the design and application of online questionnaire surveys

Collecting research data through traditional approaches (face-to-face, postal or telephone survey) can be costly and time consuming. The emerging data collection approach based on internet/e-based technologies (e.g. online platforms and email), is a relatively cost effective survey alternative. These novel data collection strategies can collect large amounts of data from participants in a short time frame. Similarly, they also seem to be feasible and effective in collecting data on sensitive issues or with samples they are generally hard to reach, for example, men who have sex with men (MSM) or migrants. As a significant proportion of the population currently in the world are digitally connected, the shift from postal (paper-pencil) or telephone towards online survey use in research is in the interests of researchers in academia as well as in the commercial world. However, compared to designing and executing paper version of the questionnaire, there is limited literature to help a starting researcher with the design and a use of online questionnaires. This short paper highlights issues around: a) methodological aspect of online questionnaire survey; b) online survey planning and management; and c) ethical concerns that may arise while using this option. We believe that this paper will be useful for researchers who want to gain knowledge or apply this approach in their research

Nanoscale volume confinement and fluorescence enhancement with double nanohole aperture

International audienceDiffraction ultimately limits the fluorescence collected from a single molecule, and sets an upper limit to the maximum concentration to isolate a single molecule in the detection volume. To overcome these limitations, we introduce here the use of a double nanohole structure with 25 nm gap, and report enhanced detection of single fluorescent molecules in concentrated solutions exceeding 20 micromolar. The nanometer gap concentrates the light into an apex volume down to 70 zeptoliter (10 −21 L), 7000-fold below the diffraction-limited confocal volume. Using fluorescence correlation spectroscopy and time-correlated photon counting, we measure fluorescence enhancement up to 100-fold, together with local density of optical states (LDOS) enhancement of 30-fold. The distinctive features of double nanoholes combining high local field enhancement, efficient background screening and relative nanofabrication simplicity offer new strategies for real time investigation of biochemical events with single molecule resolution at high concentrations. Plasmonic nanoantennas realize a new paradigm to concentrate light energy into nanoscale dimension