742 research outputs found

    Restoration of Soil Health for Achieving Sustainable Growth in Agriculture

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    Total geographical area of Pakistan is 79.61 million hectares (m.ha.). Area under cultivation is 21.59 m.ha.; of which, only 5.34 m.ha. (i.e., 25 percent) is free from soil limitations and is fit for intensive agriculture [Mian and Mirza (1993)]. The remaining agricultural lands have various types of problems including formation of slow permeability, water logging, salinity and sodicity, and wind and water erosion. Thus, on an average, three out of four hectares of cultivated land in Pakistan are in poor health. This in turn is causing temporary or permanent decline in the productive capacity of the land. Therefore, poor soil health is posing serious threat to the sustainable growth of agriculture.

    Wear of Rolling Bearing Materials with Refrigerant Lubrication

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    Cooperatives and Development: Lessons from the Punjab Experience

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    Traditionally, cooperatives have been expected to serve a broad set of sociopolitical and economic objectives ranging from self-help and grass-root participation to welfare and distribution, including economies of scale and social control over resource allocation and mobilisation. However, these various objectives are not mutually consistent. There exists substantial trade-off in the realisation of many of these goals. It is therefore necessary to weigh their relative importance in the felt needs and priorities of a particular community at any given point of time if performance of cooperatives is to be evaluated in an appropriate context. An attempt to fulfil a range of these conflicting objectives simultaneously has eventually led to a broad based disenchantment with the cooperative movement. This paper highlights two sets of issues with respect to cooperative development. First, it discusses the concept of cooperation and illustrates that the contradictions in the ideology and practice are more significant in explaining the limitations of cooperatives to serve as an instrument of development. Second, the paper points out that in the absence of various external and internal prerequisites, especially due to the lack of their recognition, cooperatives tend to be inefficient relative to other forms of traditional institutions even after receiving subsidies and other types of assistance, thus neither achieving efficiency nor development. By analysing the area of agricultural credit, in which cooperatives have traditionally been most active in the Punjab, this paper illustrates various dilemmas and contradictions and the preconditions necessary for credit cooperatives to reach the rural poor effectively. Finally, the paper points out the implications of the past experience for the future role of cooperatives in Punjab.

    A STUDY OF COHESION AS A TEXT-FORMING RESOURCE IN THE ACADEMIC WRITING OF SAUDI UNDERGRADUATE STUDENTS OF ENGLISH AS A FOREIGN LANGUAGE (EFL)

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    Assuming academic writing as a genre-specific discourse which is linguistically and socio-culturally embedded both in the wider academic discourse community and the local context where it is produced, the present study sought to investigate Saudi EFL undergraduate students' use of cohesive devices as a text-forming resource in the creation of argumentative essays. More specifically, the study attempted to explain the use of cohesion in the creation of texture, and in the rhetorical structure of the sample texts. Structured questionnaires and interviews were also used to gauge the perceptions of the teachers and the students about the teaching and learning of academic writing and cohesive devices, and to triangulate the study. The researcher adopted a mixed-methods approach for analysis of the data. Halliday and Hasan's (1976) model of cohesion analysis was the mainstay of the data analysis; however, frameworks from other perspectives such as the Systemic Functional Linguistics, English for Specific Purposes, Academic Literacies, and English Language Teaching were also consulted to find out answers to the three research questions of the study. The results obtained through quantitative and qualitative analysis of the data revealed that cohesive devices were statistically significantly correlated with the text length and sentence units. However, they varied significantly between two extremes of the text length. The appropriate use of cohesive devices was also significant as the non-significant misuse or overuse did not affect the texture or Exam/cohesion scores of the sample texts. The study also claims that cohesive density rather than the text length was the significant variable of differences in the Exam and cohesion scores for the texts. Referential and lexical cohesion appeared to be statistically significant, and thereby the most preferred cohesive devices in the corpus. The pattern of texture in the students' essays corresponded with Halliday and Hasan's (1976 p.296) notion of 'dense texture'. The study also claims to be the first initiative of its kind to have analyzed cohesion in the rhetorical structure of the argumentative essays. The move analysis revealed significant correlations between the moves in the three stages of the sample texts. The survey questionnaires unfolded statistically significant dichotomies between the pedagogic and learning beliefs of the teacher and the student participants. I argue that cohesion is an important non-structural resource in the creation of texture; however, it provides only a partial picture. The students do use cohesive devices but with instances of misuse and overuse. Moreover, there is the need to help students make use of other types of reiteration, collocations and conjunctions for a better cohesive effect, and lexical and semantic diversity. The study recommends raising awareness and functional ability of the students through explicit teaching of cohesive devices not as discrete grammatical items but as discourse semantic resources of text formation

    Peer Observation as a Professional Development Intervention in EFL Pedagogy

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    Most research on peer observation as a professional development intervention in EFL contexts focuses either on teachers' perceptions about its usefulness or the methodical frameworks. There are a few studies which report real-time incidence of a peer observed lesson. To fill this gap, the present study arranged a peer observation for a reading lesson on top-down processing skills to reflect upon the strengths and weaknesses of the lesson as well as develop the reading literacy of the students. The peer observation method included a pre-observation stage with the teacher and the observer deciding on the modalities of observation. The second stage was the lesson which was peer observed followed by the post-lesson reflection stage. The results obtained through teachers' reflection on different aspects of the lesson and the peer observer's report revealed that most stages and activities of the lesson went as planned except for the final where issues of activity management, teacher feedback, and coherent lesson progression came up to the fore. The study has significance for EFL practitioners interested in initiating self-directed professional development through peer observation in particular and for researchers of professional development studies in general

    Rural Development in the 21st Century: Some Issues

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    Rural development is essentially a part of the process of structural transformation characterised by diversification of the economy away from agriculture. This process is facilitated by rapid agricultural growth, at least initially, but leads ultimately to significant decline in the share of agriculture to total employment and output and in the proportion of the rural population to total population [Johnston (1970)]. Rural development, as such, is not an end in itself but a means to an end and can provide the basis for a sustained and equitable economic growth of all sectors of the economy. The main theme of the paper is to contribute to the perception of rural development in Pakistan by delineating the pros. and cons. of past rural development efforts and the ensuing crisis in agriculture. Possible strategies for sustainable agricultural growth and rural development and the formal approach for their implementation are described in subsequent sections. It is argued that the whole scenario requires courage and political will of politicians to decentralise the development process. Concluding comments and future options for research appear at the end.

    Indoor particulate matter in developing countries: a case study in Pakistan and potential intervention strategies

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    Around three billion people, largely in low and middle income countries, rely on biomass fuels for their household energy needs. The combustion of these fuels generates a range of hazardous indoor air pollutants and is an important cause of morbidity and mortality in developing countries. Worldwide, it is responsible for four million deaths. A reduction in indoor smoke can have a significant impact on lives and can help achieve many of the Millennium Developments Goals. This letter presents details of a seasonal variation in particulate matter (PM) concentrations in kitchens using biomass fuels as a result of relocating the cooking space. During the summer, kitchens were moved outdoors and as a result the 24 h average PM10, PM2.5 and PM1 fell by 35%, 22% and 24% respectively. However, background concentrations of PM10 within the village increased by 62%. In locations where natural gas was the dominant fuel, the PM concentrations within the kitchen as well as outdoors were considerably lower than those in locations using biomass. These results highlights the importance of ventilation and fuel type for PM levels and suggest that an improved design of cooking spaces would result in enhanced indoor air quality. © 2013 IOP Publishing Ltd

    Modelling of Metal-Coating Delamination Incorporating Variable Environmental Parameters

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    A mathematical model for metal-coat delamination of degrading metal was developed incorporating multiple variable environmental parameters. Metal-coat delamination not only depends on the electrochemical reactions at metal-coat interface but also on the factors like the type of propagating metal ions and their varying concentration with annual weather changes, time of exposure of the coated objects, type of coated objects are stationary or mobile vehicles, frequency with which certain vehicles are operating in various environments e.g. controlled or uncontrolled in terms of environmental conditions. A cutting edge model has been developed to calculate the varying environmental conditions using iteration algorithm, time dependent uncertain position of objects like vehicle in various environments using stochastic approach, effect of seasonal changes on ionic compound's concentration using algebraic method and instantaneous failure probability due to varying conditions. Based on the developed model a detailed simulation study was conducted to investigate the metal-coat delamination process and the ways to regress the under coat metal corrosion

    NGOs, Micro-finance and Poverty Alleviation: Experience of the Rural Poor in Pakistan

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    Non-governmental organisations (NGOs) continue to be the global ‘flavour of the month’ in international development. They are regarded as “outside” actors perceived to work in the interests of the poor, and in the absence of the state, many NGOs have taken on vital role in the provision of basic services to the poor. The institutional and political environment is attuned to privatisation in whatever form it takes. NGOs are another expression of this trend, but in the case of NGOs no real disillusionment phase has yet set in. But still NGOs remain the favoured vehicle for grass-roots involvement and community development in many countries. The present paper seeks to delineate the role of NGOs in micro finance and study their aggregate impact on poverty reduction in rural Pakistan as a result of micro finance efforts. The paper is organised in four sections. Section I commences with the concepts, promises and limitations of NGOs as a vehicle of micro finance. Section II summarises the record of performance of NGOs in Pakistan. In particular, the role, achievements and set-backs of two noted NGOs in Pakistan, Agha Khan Rural Support Programme (AKRSP) and National Rural Support Programme (NRSP). Which are studied by examining aggregate impact of these NGOs on poverty reduction as result of their micro finance efforts. Section III examines the poverty profile and presents summary of the role of NGOs in the context of poverty lending and, finally Section IV concludes the analysis and proposes some policy recommendations.
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