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Vol.2(2) (Apr 2011)


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:: International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies

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ISSN 2228-9860
eISSN 1906-9642


Feature peer-reviewed articles for Vol.2 No.2 (April 2011):

  • Mathematical Modeling of Thin Layer Drying Kinetics of Tomato Influence of Air Dryer Conditions
  • Math Model Tomato
    Amin Taheri-Garavand, Shahin. Rafiee, Alireza Keyhani (Department of Agricultural Machinery Engineering University of Tehran, Karaj, IRAN)

    (mirror at ScriBd), (mirror at Calameo) (mirror at slideShare)

    Keywords: Tomato, Thin-layer drying, Relative humidity, Air temperatures, Air velocity

    Abstract
    Thin-layer drying kinetics of Tomato was experimentally investigated in a pilot scale convective dryer. Experiments were performed at air temperatures of 40, 60, and 80ºC and at three relative humidity of 20%, 40% and 60% and constant air velocity of 2 m/s. In order to select a suitable form of the drying curve, 9 different thin layer drying models were fitted to experimental data. The high values of coefficient of determination and the low values of reduced sum square errors and root mean square error indicated that the Midilli et al. model could satisfactorily illustrate the drying curve of tomato. the Midilli et al. model had the highest value of R2 (0.9997), the lowest SSE (0.22662) and RMSE (0.0040912) for relative humidity of 20% and air velocity of 2 m/s. the Midilli et al. model had the highest value of R2 (0.99946), the lowest SSE (0.46702) and RMSE (0.0051192) for relative humidity of 40% and air velocity of 2 m/s. the Midilli et al. model had the highest value of R2 (0.99952), the lowest SSE (0.438982) and RMSE (0.0050188) for relative humidity of 60% and air velocity of 2 m/s. The Midilli et al. model was found to satisfactorily describe the drying behavior of tomato.

  • Crossroads Vertical Speed Control Devices: Suggestion from Observation
  • Crossroads Speed Bump
    Sanya Namee, and Boonsap Witchayangkoon (Department of Civil Engineering Faculty of Engineering, Thammasat University, THAILAND )

    (mirror at ScriBd), (mirror at Calameo) (mirror at slideShare)

    Keywords: Traffic calming, Speed bump, Speed hump, Speed Table, Crossroad speed table, Traffic management, Community traffic control

    Abstract
    This work focused on traffic audits and investigation of the vertical speed control devices installed at crossroads as traffic speed being controlled but rear-end accidents can still be found. The speed monitoring through 85th percentile speeds for various types of vehicles: i) passenger cars, ii) pickup trucks, iii) motorbikes, and iv) passenger buses and lorries (i.e., more than four wheels vehicles) was performed. Discussion and recommendation from the obtained results have been made. As an alternative choice to reduce crossroad rear-end collisions, this work introduced crossroad speed table.

  • Barriers to the Implementation of Knowledge Management in Iranian Institutions
  • Knowledge Mgt
    Mohammad Abdolshah, (Engineering Faculty, Islamic Azad University, Semnan Branch, IRAN ) and Saeed Abdolshah (Department of Mechatronics Engineering, Sharif University of Technology, Tehran, IRAN )

    (mirror at ScriBd), (mirror at Calameo) (mirror at slideShare)

    Keywords: knowledge management (KM), Process approach, Iranian institutions

    Abstract
    Knowledge management in Iranian institutions is almost a new subject. Unfortunately this concept in Iranian institutions has grown slowly and as a result, it has reached to the point where a significant number of institutions never have used it and it caused their inefficiency and ineffectiveness. This article tries to find the root barriers to the implementation of knowledge management in Iranian institutions. To this end, the process of knowledge management through process approach was analyzed and then the main barriers and difficulties were identified. Then through information obtained from 114 selected Iranian institutions, to improve their systems, some proper recommendations were suggested.

  • Detecting Urban Change of Salem City of Tamil Nadu, India from 1990 to 2010 Using Geospatial Technology
  • Geospatial Change Detection
    Shanmugam Tamilenthi and Rajagopalan Baskaran (Department of Earth Sciences, Tamil University, Thanjavur, INDIA )

    (mirror at ScriBd), (mirror at Calameo) (mirror at slideShare)

    Keywords: Urbanization, IRS-LISS III, Change detection, Salem city-India

    Abstract
    Unplanned city growth is an indicator of rapid industrialization, which usually reduces the quality of the environmental health of a region - sometimes disastrously. Monitoring provides the planners and decision - makers with required information about the current state of development and the nature of changes that have occurred. The study on development of urban lands and the changes in the land use and land cover in Salem city, Tamil Nadu has been monitored by using IRS LISSII III(1991)and IRS-LISS III 2010) satellite data, the Town and Country Planning map(1994) and Survey of India Topo-sheets (1972) with limited field checks. This study highlights the changes in urban development. Mapping of the urban changes in the study area have been interpreted in view of developing urban land with different classes.

  • Understanding the Grassroots Dynamics of Slums in Nairobi: The Dilemma of Kibera Informal Settlements
  • Understanding the Grassroots Dynamics
    Emmanuel MUTISYA, and Masaru YARIME (Department of Sustainability Science, Graduate School in Frontier Sciences, The University of Tokyo, JAPAN )

    (mirror at ScriBd), (mirror at Calameo) (mirror at slideShare)


    Keywords: Urban, Poverty, Slums, Settlements, Sustainability

    Abstract
    A lot of literature on urban development in developing countries has entirely focused on the nexus between rapid urbanization, Gross Geographic Product (GGP) and poverty growth with little research that demonstrates what this impacts on urban sustainability especially with increasing slums in rapidly urbanizing African countries. Available research has focused entirely on increasing poverty level in urban Africa and its mitigation without a clear direction on what this means to slums improvement and urban sustainability. This papers aims to give a conceptual analysis that will help to understand the dynamics of urban sustainability and slums development. The historical perspectives and current realities of Kibera slums in Nairobi are reviewed.

  • Power Management in Mobile Adhoc Network
  • Understanding the Grassroots Dynamics
    Sunil Taneja (Department of Computer Science, Smt. Aruna Asaf Ali Government P.G. College, Kalka, INDIA ), Ashwani Kush (Department of Computer Science, University College, Kurukshetra University, Kurukshetra, INDIA) , Amandeep Makkar (Department of Computer Science, Arya Girls College, Ambala Cantt, INDIA), and Bharat Bhushan (Department of Computer Science, Guru Nanak Khalsa College, Yamunanagar, INDIA)

    (mirror at ScriBd), (mirror at Calameo) (mirror at slideShare)

    Keywords: Adhoc, AODV, Energy, Mobile, Network, Power, Routing

    Abstract
    A mobile adhoc network is a collection of wireless mobile nodes that communicate with one another without any fixed networking infrastructure. Since the nodes in this network are mobile, the power management and energy conservation become very critical in mobile adhoc network. The nodes in this network have limited battery power and limited computational power with a small amount of memory. Such nodes must conserve energy during routing to prolong their usefulness and increase network lifetime. This research paper proposes a scheme that takes into consideration the power awareness during route selection. This scheme observes power status of each and every node in the topology and further ensures the fast selection of routes with minimal efforts and faster recovery. The scheme is incorporated with the AODV protocol and the performance has been studied through simulation over NS-2.

  • Fluoride Recognition of Amide- and Pyrrole-Based Receptors: A Theoretical Study
  • Fluoride Recognition of Amide- and Pyrrole-Based Receptors
    Chalisa Malumgone, Somchai Keawwangchai, Chatthai Kaewtong, Nongnit Morakot, Wandee Rakrai, and Banchob Wanno (Department of Chemistry, Faculty of Science, Mahasarakham University, Mahasarakham, THAILAND)

    (mirror at ScriBd), (mirror at Calameo) (mirror at slideShare)

    Keywords: Amide based receptor; Halide ions; Binding energy; Density functional theory (DFT)

    Abstract
    The novel amide-based receptors, N-(anthracen-1-yl)-1H-pyrrole-2-carboxamide (1) and N-(8-(1H-pyrrole-2-carboxamido) anthracen-1-yl)-1H-pyrrole-2-carboxamide (2) have been designed and investigated for their halide ion recognition using the density functional theory calculations in gas and solvent phases. Electronic and thermodynamic properties of halide ion binding complexes of receptors were investigated. Intermolecular interactions in all the studied complexes occurring via hydrogen bonding are found. The designed receptors 1 and 2 are found to be excellent selectivity for fluoride ion in both gas and solvent phases.

  • Effective Moisture Diffusivity and Activation Energy of Tomato in Thin Layer Dryer during Hot Air Drying
  • Effective Moisture Diffusivity
    Amin Taheri-Garavand, Shahin. Rafiee, Alireza Keyhani (Department of Agricultural Machinery Engineering University of Tehran, Karaj, IRAN)

    (mirror at ScriBd), (mirror at Calameo), (mirror at slideShare)

    Keywords:Drying; Fick’s model; Activation energy; Tomato; Relative humidity

    Abstract
    The aim of this paper is to report tomato slice moisture diffusivity data determined and activation energy from experimental drying kinetics. The thin-layer drying experiments were carried out under five air temperatures of 40, 50, 60, 70 and 80ºC, two air velocity 1.5, and 2 m/s and three level of relative humidity 20, 40 and 60%. It was observed that drying took place in the falling rate period. Moisture transfer from tomato slice was described by applying the Fick’s diffusion model. The effective diffusivity values changed from 9.9119×10^-10 to 6.4037×10^-9 m^2/s for the range of temperatures considered. An Arrhenius relation with an activation energy value of 33.3299 to 43.2287 kJ/mol and the diffusivity constant value of 1.7695×10^-4 to 3.09156×10^-2 m^2/s were obtained which shows the effect of drying air temperature, air velocity and relative humidity on the diffusivity.



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:: 2011 International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies, Some Rights Reserved.


Ċ
Boonsap Witchayangkoon,
Apr 22, 2011, 2:42 AM