2,305 research outputs found
Curved Track Analysis of FSO Link for Ground-to-Train Communications
No full textIn this work, a free space optical (FSO) link for the ground-to-train (G2T-FSO) communications is proposed. Analytical analysis is carried out for the curved rail tracks. We show that the transmitter divergence angle, the transmit power and the size of the concentration lens need to increase for the curved section of the rail track compared to the straight track. We derive the analytical expression for the received power level based on the link geometry for the case of the curved track In the worst case scenario when the curvature radius is 120 m, the transmit power at the optical base station (BS) needs to increase by over 2 dB when the concentration lens radius is increased by 5 times. Analyses also show that the received power along the track increases with the curvature radius for the same transmit power and receiver optics illustrating the effect due to link geometry. Additionally, the signal-to-noise ratio (SNR) and the bit error rate (BER) performance of the system for the curved track with different curvature radii is analysed at data rates of 10 Mbps and 100 Mbps for an additive white Gaussian noise (AWGN) channel showing a good agreement between the theoretical and the simulated BER. Finally, effect of scintillations on the G2T-FSO link performance is discussed
Agricultural land underutilisation in the hills of Nepal: investigating socio-environmental pathways of change
No full textAbstract not availableHemant R. Ojha, Krishna K. Shrestha, Yuba R. Subedi, Racchya Shah, Ian Nuberg, Binod Heyojoo, Edwin Cedamon, Jonathan Rigg, Sujata Tamang, Krishna P. Paudel, Yam Malla, Phil McManu
Wie verändern sich die subjektiven Theorien von Lehramtsstudierenden über guten inklusiven Unterricht?
No full textFaix A-C. Wie verändern sich die subjektiven Theorien von Lehramtsstudierenden über guten inklusiven Unterricht? In: Schimek B, Kremsner G, Proyer M, Grubich R, Paudel F, Grubich-Müller R, eds. Grenzen.Gänge.Zwischen.Welten.: Kontroversen - Entwicklungen - Perspektiven der Inklusionsforschung. Bad Heilbrunn: Verlag Julius Klinkhardt; 2022: 246-254
Zum Umgang mit als störend wahrgenommenen Handlungsweisen von Schüler*innen in einem inklusionsorientierten Unterricht - Perspektiven für die Lehrer*innenbildung (im Förderschwerpunkt emotionale und soziale Entwicklung)
No full textAmrhein B, Badstieber B, Schroeder R. Zum Umgang mit als störend wahrgenommenen Handlungsweisen von Schüler*innen in einem inklusionsorientierten Unterricht - Perspektiven für die Lehrer*innenbildung (im Förderschwerpunkt emotionale und soziale Entwicklung). In: Schimek B, Kremsner G, Grubich R, Paudel F, Grubich-Müller R, eds. „Grenzen.Gänge.Zwischen.Welten“ Kontroversen - Entwicklungen - Perspektiven der Inklusionsforschung. Bad Heilbrunn: Klinkhardt; 2022: 263-270
A New Method for Peer Matching and Negotiation of Prosumers in Peer-to-Peer Energy Markets
No full textThis article presents a scalable mechanism for peer-to-peer (P2P) energy trading among prosumers in a smart grid. In the proposed mechanism, prosumers engage in a non-mediated negotiation with their peers to reach an agreement on the price and quantity of energy to be exchanged. Instead of concurrent bilateral negotiation between all peers with high overheads, an iterative peer matching process is employed to match peers for bilateral negotiation. The proposed negotiation algorithm enables prosumers to come to an agreement, given that they have no prior knowledge about the preference structure of their trading partners. A greediness factor is introduced to model the selfish behavior of prosumers in the negotiation process and to investigate its impact on the negotiation outcome. In order to recover the costs related to power losses, a transaction fee is applied to each transaction that enables the grid operator to recover incurred losses due to P2P trades. The case studies demonstrate that the proposed mechanism discourages greedy behavior of prosumers in the negotiation process as it does not increase their economic surplus. Also, it has an appropriate performance from the computation overheads and scalability perspectives
2.7 Changing forestry interests in the mid-hills of Nepal: Implications for silviculture policy and practice
No full textThis is a Thematic paper within the report Paudel, N.S., Ojha, H., Banjade, M.R., Karki, R. and Tamang, S. (Eds.). 2021. Revitalising community forestry in the changing socioeconomic context of Nepal. Kathmandu: EnLiFT2 programme and ForestAction Nepal. Research Paper Series on Improved Forest Management in Nepal, 2022-01: 1-86.Forests continue to play important livelihood roles in rural Nepal. However, forest and society relationships are at a new crossroads, driven by a political regime shift and profound changes in the socio-economic context associated with a transition in the agrarian economy. A prominent example of changing forest-society relation is the declining household dependency on major community forest products such as timber and firewood. Increasing outmigration and remittances are a component of that reduced household dependency on community forest, but there has also been a trend to an intensification of agricultural and forestry activities on private lands and a greater reliance on non-farm income. While these changes have been identified only recently, concerns had been raised as to how forest policies and silviculture regimes could be reflective and responsive to community forest users and private forest owners having multiple forest management objectives. Here we discuss the key results emerging from a recent socio-ecological analysis of the perceptions of rural respondents in Nepal, to describe how the households’ aims and activities appear to be changing in relation to the forest.Edwin Cedamon, Douglas Bardsley, and Ian Nuber
Implementation of Anaerobic Soil Disinfestation in Florida Tomato Production
No full textAnaerobic soil disinfestation (ASD) is a relatively new technique that appears to be a promising tool for soilborne pest management and crop production improvement. This new 5-page publication of the UF/IFAS Horticultural Sciences Department is intended to introduce ASD for Florida vegetable growers. Written by Bodh R. Paudel, Francesco Di Gioia, Qiang Zhu, Xin Zhao, Monica Ozores-Hampton, Marilyn E. Swisher, Kaylene Sattanno, Jason C. Hong, and Erin N. Rosskopf.
https://edis.ifas.ufl.edu/hs134
Deliberative Knowledge Interface: Lessons and Policy Implications
No full textA question that guided the research project as well as the process of editing the book has been: how different systems of knowledge operate around natural resource governance, and how different categories of social agents associated with different systems of knowledge engage in the process of deliberation. Our aim was to bring together empirical evidence and theoretical insights to explore and substantiate key issues and innovations, as well as to draw policy lessons in relation to enhancing deliberative interface among diverse knowledge systems that exist in the context of natural resource governance. We drew upon critical, theoretical insights of French sociologist Pierre Bourdieu (mainly practice, habitus and field) and German political theorist Jürgen Habermas (mainly communicative reason and deliberation) for the empirical analysis of six case studies of natural resource management in Nepal. The case studies are representative of the various sub-sectors of natural resource governance such as forest, water and agriculture in Nepal at local, sub-national and national levels. These cases together present diverse situations of interface among various systems of knowledge. The six case studies confirm our proposition (see Chapter one) that effective natural resource governance in Nepal is heavily influenced and shaped by the processes through which different categories of social agents and their respective systems of knowledge interact and deliberate with one another. The empirical materials presented in the chapters amply demonstrate that all situations of natural resource governance, to varying degrees, reflect a deliberative interface among four categories of social agents, namely: civil society, techno-bureaucrats, formal politicians and development agencies.</p
Canopy gaps and regeneration development in Pine and Sal Forests Silviculture Demonstration Plots in Midhills Nepal
No full textSilviculture demonstration plots were established in Kavre and Lamjung districts by the EnLiFT Project to examine stand response to selected silviculture system ~ uniform shelterwood, selection system, and negative thinning and as a showcase to forest users for these silviculture system. This paper analysis the extent of canopy gaps on these demo plots after silviculture treatments and regeneration development one-year after treatment. Using crown photographs, crown covers are estimated and compared between silviculture systems. The analysis have shown that rigid silviculture systems like shelterwood and selection system can create significant canopy gaps than negative thinning in pine plantations and that the rate of natural regeneration is directly related with the canopy gaps. In Sal-Katus-Chilaune forest however, negative thinning created canopy gaps larger than selection silviculture demo plots due to removal of 4-D trees, majority are Chilaune trees, which typically have large spreading crown. Although conclusion from the demo plots at this stage may be too early to make on regeneration growth and canopy gap relationship, it is clear that silviculture operations have significant role in promoting higher rate regeneration growth and that rigid silviculture operations like selection and shelterwood systems are better than current silviculture regime represented by negative thinning in this study.Edwin Cedamon, Govinda Paudel, Madan Basyal, Ian Nuberg and Naya Paude
- …
