Abstract
The methods used for conventional software development cannot be used directly for the development of web applications. Today
most of the companies use scrum methodology for the development of web applications. But it seem to be difficult to use the scrum
in large projects because of the change of requirement late in the project and also it is difficult apply scrum in a big team. This
paper identifies and analyses the various changes required in the scrum methodology to make them applicable for the large
projects and reduce the cost.
Keywords: software development model, hybrid model, scrum methodology, prototype models
Webinar: Development with Agile, Waterfall and Agile-Waterfall HybridIntland Software GmbH
Watch this webinar recording to learn about the fundamentals of Waterfall and Agile development, as well as the “Agifall” Hybrid solution that aims to combine the benefits of both approaches. After introducing both approaches, this webinar discusses the two most widely used Agile methodologies: Scrum and Kanban. Through a live demonstration, the webinar also shows you how to manage projects with either of these development frameworks in codeBeamer.
http://intland.com/webinar/2015-03/development-with-agile-waterfall-and-agile-waterfall-hybrid-2/
Agifall - Combining Waterfall and Agile Development Process for Digital and S...Mark Fromson
We all know waterfall has generally fallen out of favour and agile is the new process wunderkind. However, is pure agile really appropriate, or even possible, for the majority of our current digital projects? If the technical team is driving the agile development process from the start, just how and when do we integrate the user experience and creative contribution into the project lifecycle? Does agile really mean development first with no upfront design or specification, or, is there a better way to make agile development more effective when it begins? Certainly agile can be problematic for client projects when the statement of work contract is king for establishing project scope ahead of time. So how do we successfully integrate the benefits of agile into client-vendor engagements without putting either party at risk? This presentation topic is on how to effectively combine the best of waterfall and agile into a hybrid process model called “Agifall.” No process is perfect, but Agifall just might be the one that works best for your next project.
Our latest webinar "Software Development with Agile Waterfall Hybrid Method" presents you the pros and cons of both methodologies, Agile and Waterfall.
Watch our webinar to learn more about what kind of projects the Hybrid model works for best, and how exactly you can implement a Hybrid approch in software development and benefit from the advanced features of codeBeamer ALM software.
Adopting a hybrid, user-centric project methodology such as Agifall can reap fantastic rewards, if implemented in the correct setting. Be sure to contact us at Newpath Web if you would like further information or to discuss any of your project management needs.
Agile is gathering momentum but its not easy to switch to Agile especially in complex environments like banking or multinationals. Many companies can’t refuse Waterfall but understand the value of Agile and want to start applying it. How to combine Waterfall and Agile in one project, do it effectively and get value? In every standard Waterfall phase from initiation till closure Agile is able to help Project manager, team and stakeholders be more effective, adaptive, meet end user expectations better and have a fun. There are cases from CISCO Systems, NASA, US health care program to learn from.
I want to demonstrate that it is possible and often necessary to combine both Waterfall and Agile in one project. We will review challenges of big complex environments that have absorbed Waterfall and have strict procedures and guidelines but are willing to gradually move to Agile.
Webinar: Development with Agile, Waterfall and Agile-Waterfall HybridIntland Software GmbH
Watch this webinar recording to learn about the fundamentals of Waterfall and Agile development, as well as the “Agifall” Hybrid solution that aims to combine the benefits of both approaches. After introducing both approaches, this webinar discusses the two most widely used Agile methodologies: Scrum and Kanban. Through a live demonstration, the webinar also shows you how to manage projects with either of these development frameworks in codeBeamer.
http://intland.com/webinar/2015-03/development-with-agile-waterfall-and-agile-waterfall-hybrid-2/
Agifall - Combining Waterfall and Agile Development Process for Digital and S...Mark Fromson
We all know waterfall has generally fallen out of favour and agile is the new process wunderkind. However, is pure agile really appropriate, or even possible, for the majority of our current digital projects? If the technical team is driving the agile development process from the start, just how and when do we integrate the user experience and creative contribution into the project lifecycle? Does agile really mean development first with no upfront design or specification, or, is there a better way to make agile development more effective when it begins? Certainly agile can be problematic for client projects when the statement of work contract is king for establishing project scope ahead of time. So how do we successfully integrate the benefits of agile into client-vendor engagements without putting either party at risk? This presentation topic is on how to effectively combine the best of waterfall and agile into a hybrid process model called “Agifall.” No process is perfect, but Agifall just might be the one that works best for your next project.
Our latest webinar "Software Development with Agile Waterfall Hybrid Method" presents you the pros and cons of both methodologies, Agile and Waterfall.
Watch our webinar to learn more about what kind of projects the Hybrid model works for best, and how exactly you can implement a Hybrid approch in software development and benefit from the advanced features of codeBeamer ALM software.
Adopting a hybrid, user-centric project methodology such as Agifall can reap fantastic rewards, if implemented in the correct setting. Be sure to contact us at Newpath Web if you would like further information or to discuss any of your project management needs.
Agile is gathering momentum but its not easy to switch to Agile especially in complex environments like banking or multinationals. Many companies can’t refuse Waterfall but understand the value of Agile and want to start applying it. How to combine Waterfall and Agile in one project, do it effectively and get value? In every standard Waterfall phase from initiation till closure Agile is able to help Project manager, team and stakeholders be more effective, adaptive, meet end user expectations better and have a fun. There are cases from CISCO Systems, NASA, US health care program to learn from.
I want to demonstrate that it is possible and often necessary to combine both Waterfall and Agile in one project. We will review challenges of big complex environments that have absorbed Waterfall and have strict procedures and guidelines but are willing to gradually move to Agile.
Software Development Methodologies By E2LogyE2LOGY
Software development methodology in software field is a framework which is used to structure,plan and control the process of development. Some of the common development methodologies are Waterfall, iterative Waterfall, SCRUM (Agile), Kanban (Agile). This presentation deals with all these methodology in detail.
A fair analysis of the Agile Methodology. A quick comparison of Agile and Waterfall to clear up misconceptions about the two. Scalability is a major issue with Agile and is worth considering if you're not a large software company.
Comparative study on agile software development: Software development methodologies are constantly evolving due to changing technologies and new demands from users. Today’s dynamic business environment has given rise to emergent organizations that continuously adapt their structures, strategies, and policies to suit the new environment[12]. Such organizations need information systems that constantly evolve to meet their changing requirements. Though traditional software development methodologies, such as life cyclebased structured and object oriented approaches, continue to dominate the systems development few decades and much research has done in traditional methodologies, Agile software development brings its own set of novel challenges that must be addressed to satisfy the customer through early and continuous delivery of the valuable software. It’s a set of best practice that allows rapid delivery of high quality software to meet customer needs and also accommodate changes in the requirements.[13] Traditional, plan-driven software development methodologies lack the flexibility to dynamically adjust the development process. Agile development is the ability to develop software quickly keeping pace with the rapidly changing requirements. We speculate that from the need to satisfy the customer through early and continuous delivery of the valuable software, Agile software development is emerged. In this paper, we provide a brief comparison of agile development methodologies with traditional systems development methodologies, and discuss the challenges of adopting agile methodologies. A number of software development methods such as extreme programming (XP), feature-driven development, crystal clear method, scrum, dynamic systems development, and adaptive software development are also briefly discussed in this paper.
Waterfall vs Agile : A Beginner's Guide in Project ManagementJonathan Donado
A beginner's guide to learn about Waterfall and Agile methodologies and frameworks in project management.
This is done in plain English for the non-tech savvy reader.
Presentation by Jonathan Donado
Connect with me on Twitter @donadosays
Linkedin: https://www.linkedin.com/in/jonathandonado/
PMI / PMP / Agile / Business / Project Management / Project Manager / Waterfall
Webinar "Differences between Testing in Waterfall and Agile"
presentation by Maria Teryokhina
http://www.exigenservices.ru/webinars/testing-in-waterfall-and-agile
Agile vs Waterfall | Difference between Agile and Waterfall | EdurekaEdureka!
YouTube Link: https://youtu.be/rvTejAg_fbY
**DevOps Certification Courses - https://www.edureka.co/devops-certification-courses **
This Edureka session on ‘waterfall vs agile’ will compare both the approaches of software
development. This will help you select one of them as per your needs. This Session will focus on pointers like:
What is waterfall?
Pros and cons of waterfall
What is Agile?
Pros and cons of Agile
Comparison of Waterfall and Agile
Which model to use when and where?
Follow us to never miss an update in the future.
YouTube: https://www.youtube.com/user/edurekaIN
Instagram: https://www.instagram.com/edureka_learning/
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
LinkedIn: https://www.linkedin.com/company/edureka
Castbox: https://castbox.fm/networks/505?country=in
Balanced Measurement Sets: Criteria for Improving Project Management PracticesLuigi Buglione
The availability of a measurement framework right at the early stage of a project can have a very positive impact in the management of software development process. In this paper, we cope with this problem proposing a methodology that can allow an early adoption of balanced measurement sets, which will be iteratively refined at each iteration of the process. The proposed methodology can be implemented and supported by open source tools like the Spago4Q platform.
Software Development Methodologies By E2LogyE2LOGY
Software development methodology in software field is a framework which is used to structure,plan and control the process of development. Some of the common development methodologies are Waterfall, iterative Waterfall, SCRUM (Agile), Kanban (Agile). This presentation deals with all these methodology in detail.
A fair analysis of the Agile Methodology. A quick comparison of Agile and Waterfall to clear up misconceptions about the two. Scalability is a major issue with Agile and is worth considering if you're not a large software company.
Comparative study on agile software development: Software development methodologies are constantly evolving due to changing technologies and new demands from users. Today’s dynamic business environment has given rise to emergent organizations that continuously adapt their structures, strategies, and policies to suit the new environment[12]. Such organizations need information systems that constantly evolve to meet their changing requirements. Though traditional software development methodologies, such as life cyclebased structured and object oriented approaches, continue to dominate the systems development few decades and much research has done in traditional methodologies, Agile software development brings its own set of novel challenges that must be addressed to satisfy the customer through early and continuous delivery of the valuable software. It’s a set of best practice that allows rapid delivery of high quality software to meet customer needs and also accommodate changes in the requirements.[13] Traditional, plan-driven software development methodologies lack the flexibility to dynamically adjust the development process. Agile development is the ability to develop software quickly keeping pace with the rapidly changing requirements. We speculate that from the need to satisfy the customer through early and continuous delivery of the valuable software, Agile software development is emerged. In this paper, we provide a brief comparison of agile development methodologies with traditional systems development methodologies, and discuss the challenges of adopting agile methodologies. A number of software development methods such as extreme programming (XP), feature-driven development, crystal clear method, scrum, dynamic systems development, and adaptive software development are also briefly discussed in this paper.
Waterfall vs Agile : A Beginner's Guide in Project ManagementJonathan Donado
A beginner's guide to learn about Waterfall and Agile methodologies and frameworks in project management.
This is done in plain English for the non-tech savvy reader.
Presentation by Jonathan Donado
Connect with me on Twitter @donadosays
Linkedin: https://www.linkedin.com/in/jonathandonado/
PMI / PMP / Agile / Business / Project Management / Project Manager / Waterfall
Webinar "Differences between Testing in Waterfall and Agile"
presentation by Maria Teryokhina
http://www.exigenservices.ru/webinars/testing-in-waterfall-and-agile
Agile vs Waterfall | Difference between Agile and Waterfall | EdurekaEdureka!
YouTube Link: https://youtu.be/rvTejAg_fbY
**DevOps Certification Courses - https://www.edureka.co/devops-certification-courses **
This Edureka session on ‘waterfall vs agile’ will compare both the approaches of software
development. This will help you select one of them as per your needs. This Session will focus on pointers like:
What is waterfall?
Pros and cons of waterfall
What is Agile?
Pros and cons of Agile
Comparison of Waterfall and Agile
Which model to use when and where?
Follow us to never miss an update in the future.
YouTube: https://www.youtube.com/user/edurekaIN
Instagram: https://www.instagram.com/edureka_learning/
Facebook: https://www.facebook.com/edurekaIN/
Twitter: https://twitter.com/edurekain
LinkedIn: https://www.linkedin.com/company/edureka
Castbox: https://castbox.fm/networks/505?country=in
Balanced Measurement Sets: Criteria for Improving Project Management PracticesLuigi Buglione
The availability of a measurement framework right at the early stage of a project can have a very positive impact in the management of software development process. In this paper, we cope with this problem proposing a methodology that can allow an early adoption of balanced measurement sets, which will be iteratively refined at each iteration of the process. The proposed methodology can be implemented and supported by open source tools like the Spago4Q platform.
Choose the Best Agile Product Development Method for a Successful BusinessFibonalabs
Unlike the traditional, time-boggling development methods like the waterfall model, spiral method, etc., agile is more inclined towards continuous communication between the client and the engineering team. Agile software development focuses on the micromanagement of things by tracking the smallest progress in a defined manner. This way the changes in the requirements that occur even in the middle of the project completion are infused in a more progressive manner.
The Many approaches and methodologies are available in the development of software with error free to its end user by fulfilling the values of stake-holders. Among the available methodologies Agile is a popular methodology which is introduced in 2001. Agile consists of various development processes such as Scrum, XP, Kanban, Lean and others. Among them Lean is one of the methodology in development of software domain which is adapted from Toyota Production System. This paper concentrates on how Lean sustains in the business stagnation because there exists some problems such as missing deadline, over development and ineffective management. Lean is having its own advantages and pitfalls. To overcome the pitfalls of Lean an adaptive approach is needed which may fit with existing industry standards.
Software development process models
Rapid Application Development (RAD) Model
Evolutionary Process Models
Spiral Model
THE FORMAL METHODS MODEL
Specialized Process Models
The Concurrent Development Model
Mechanical properties of hybrid fiber reinforced concrete for pavementseSAT Journals
Abstract
The effect of addition of mono fibers and hybrid fibers on the mechanical properties of concrete mixture is studied in the present
investigation. Steel fibers of 1% and polypropylene fibers 0.036% were added individually to the concrete mixture as mono fibers and
then they were added together to form a hybrid fiber reinforced concrete. Mechanical properties such as compressive, split tensile and
flexural strength were determined. The results show that hybrid fibers improve the compressive strength marginally as compared to
mono fibers. Whereas, hybridization improves split tensile strength and flexural strength noticeably.
Keywords:-Hybridization, mono fibers, steel fiber, polypropylene fiber, Improvement in mechanical properties.
Material management in construction – a case studyeSAT Journals
Abstract
The objective of the present study is to understand about all the problems occurring in the company because of improper application
of material management. In construction project operation, often there is a project cost variance in terms of the material, equipments,
manpower, subcontractor, overhead cost, and general condition. Material is the main component in construction projects. Therefore,
if the material management is not properly managed it will create a project cost variance. Project cost can be controlled by taking
corrective actions towards the cost variance. Therefore a methodology is used to diagnose and evaluate the procurement process
involved in material management and launch a continuous improvement was developed and applied. A thorough study was carried
out along with study of cases, surveys and interviews to professionals involved in this area. As a result, a methodology for diagnosis
and improvement was proposed and tested in selected projects. The results obtained show that the main problem of procurement is
related to schedule delays and lack of specified quality for the project. To prevent this situation it is often necessary to dedicate
important resources like money, personnel, time, etc. To monitor and control the process. A great potential for improvement was
detected if state of the art technologies such as, electronic mail, electronic data interchange (EDI), and analysis were applied to the
procurement process. These helped to eliminate the root causes for many types of problems that were detected.
Managing drought short term strategies in semi arid regions a case studyeSAT Journals
Abstract
Drought management needs multidisciplinary action. Interdisciplinary efforts among the experts in various fields of the droughts
prone areas are helpful to achieve tangible and permanent solution for this recurring problem. The Gulbarga district having the total
area around 16, 240 sq.km, and accounts 8.45 per cent of the Karnataka state area. The district has been situated with latitude 17º 19'
60" North and longitude of 76 º 49' 60" east. The district is situated entirely on the Deccan plateau positioned at a height of 300 to
750 m above MSL. Sub-tropical, semi-arid type is one among the drought prone districts of Karnataka State. The drought
management is very important for a district like Gulbarga. In this paper various short term strategies are discussed to mitigate the
drought condition in the district.
Keywords: Drought, South-West monsoon, Semi-Arid, Rainfall, Strategies etc.
Life cycle cost analysis of overlay for an urban road in bangaloreeSAT Journals
Abstract
Pavements are subjected to severe condition of stresses and weathering effects from the day they are constructed and opened to traffic
mainly due to its fatigue behavior and environmental effects. Therefore, pavement rehabilitation is one of the most important
components of entire road systems. This paper highlights the design of concrete pavement with added mono fibers like polypropylene,
steel and hybrid fibres for a widened portion of existing concrete pavement and various overlay alternatives for an existing
bituminous pavement in an urban road in Bangalore. Along with this, Life cycle cost analyses at these sections are done by Net
Present Value (NPV) method to identify the most feasible option. The results show that though the initial cost of construction of
concrete overlay is high, over a period of time it prove to be better than the bituminous overlay considering the whole life cycle cost.
The economic analysis also indicates that, out of the three fibre options, hybrid reinforced concrete would be economical without
compromising the performance of the pavement.
Keywords: - Fatigue, Life cycle cost analysis, Net Present Value method, Overlay, Rehabilitation
Laboratory studies of dense bituminous mixes ii with reclaimed asphalt materialseSAT Journals
Abstract
The issue of growing demand on our nation’s roadways over that past couple of decades, decreasing budgetary funds, and the need to
provide a safe, efficient, and cost effective roadway system has led to a dramatic increase in the need to rehabilitate our existing
pavements and the issue of building sustainable road infrastructure in India. With these emergency of the mentioned needs and this
are today’s burning issue and has become the purpose of the study.
In the present study, the samples of existing bituminous layer materials were collected from NH-48(Devahalli to Hassan) site.The
mixtures were designed by Marshall Method as per Asphalt institute (MS-II) at 20% and 30% Reclaimed Asphalt Pavement (RAP).
RAP material was blended with virgin aggregate such that all specimens tested for the, Dense Bituminous Macadam-II (DBM-II)
gradation as per Ministry of Roads, Transport, and Highways (MoRT&H) and cost analysis were carried out to know the economics.
Laboratory results and analysis showed the use of recycled materials showed significant variability in Marshall Stability, and the
variability increased with the increase in RAP content. The saving can be realized from utilization of recycled materials as per the
methodology, the reduction in the total cost is 19%, 30%, comparing with the virgin mixes.
Keywords: Reclaimed Asphalt Pavement, Marshall Stability, MS-II, Dense Bituminous Macadam-II
Laboratory investigation of expansive soil stabilized with natural inorganic ...eSAT Journals
Abstract
Soil stabilization has proven to be one of the oldest techniques to improve the soil properties. Literature review conducted revealed
that uses of natural inorganic stabilizers are found to be one of the best options for soil stabilization. In this regard an attempt has
been made to evaluate the influence of RBI-81 stabilizer on properties of black cotton soil through laboratory investigations. Black
cotton soil with varying percentages of RBI-81 viz., 0, 0.5, 1, 1.5, 2, and 2.5 percent were studied for moisture density relationships
and strength behaviour of soils. Also the effect of curing period was evaluated as literature review clearly emphasized the strength
gain of soils stabilized with RBI-81 over a period of time. The results obtained shows that the unconfined compressive strength of
specimens treated with RBI-81 increased approximately by 250% for a curing period of 28 days as compared to virgin soil. Further
the CBR value improved approximately by 400%. The studies indicated an increasing trend for soil strength behaviour with
increasing percentage of RBI-81 suggesting its potential applications in soil stabilization.
Influence of reinforcement on the behavior of hollow concrete block masonry p...eSAT Journals
Abstract
Reinforced masonry was developed to exploit the strength potential of masonry and to solve its lack of tensile strength. Experimental
and analytical studies have been carried out to investigate the effect of reinforcement on the behavior of hollow concrete block
masonry prisms under compression and to predict ultimate failure compressive strength. In the numerical program, three dimensional
non-linear finite elements (FE) model based on the micro-modeling approach is developed for both unreinforced and reinforced
masonry prisms using ANSYS (14.5). The proposed FE model uses multi-linear stress-strain relationships to model the non-linear
behavior of hollow concrete block, mortar, and grout. Willam-Warnke’s five parameter failure theory has been adopted to model the
failure of masonry materials. The comparison of the numerical and experimental results indicates that the FE models can successfully
capture the highly nonlinear behavior of the physical specimens and accurately predict their strength and failure mechanisms.
Keywords: Structural masonry, Hollow concrete block prism, grout, Compression failure, Finite element method,
Numerical modeling.
Influence of compaction energy on soil stabilized with chemical stabilizereSAT Journals
Abstract
Increase in traffic along with heavier magnitude of wheel loads cause rapid deterioration in pavements. There is a need to improve
density, strength of soil subgrade and other pavement layers. In this study an attempt is made to improve the properties of locally
available loamy soil using twin approaches viz., i) increasing the compaction of soil and ii) treating the soil with chemical stabilizer.
Laboratory studies are carried out on both untreated and treated soil samples compacted by different compaction efforts. Studies
show that increase in compaction effort results in increase in density of soil. However in soil treated with chemical stabilizer, rate of
increase in density is not significant. The soil treated with chemical stabilizer exhibits improvement in both strength and performance
properties.
Keywords: compaction, density, subgradestabilization, resilient modulus
Geographical information system (gis) for water resources managementeSAT Journals
Abstract
Water resources projects are inherited with overlapping and at times conflicting objectives. These projects are often of varied sizes
ranging from major projects with command areas of millions of hectares to very small projects implemented at the local level. Thus,
in all these projects there is seldom proper coordination which is essential for ensuring collective sustainability.
Integrated watershed development and management is the accepted answer but in turn requires a comprehensive framework that can
enable planning process involving all the stakeholders at different levels and scales is compulsory. Such a unified hydrological
framework is essential to evaluate the cause and effect of all the proposed actions within the drainage basins.
The present paper describes a hydrological framework developed in the form of a Hydrologic Information System (HIS) which is
intended to meet the specific information needs of the various line departments of a typical State connected with water related aspects.
The HIS consist of a hydrologic information database coupled with tools for collating primary and secondary data and tools for
analyzing and visualizing the data and information. The HIS also incorporates hydrological model base for indirect assessment of
various entities of water balance in space and time. The framework would be maintained and updated to reflect fully the most
accurate ground truth data and the infrastructure requirements for planning and management.
Keywords: Hydrological Information System (HIS); WebGIS; Data Model; Web Mapping Services
Forest type mapping of bidar forest division, karnataka using geoinformatics ...eSAT Journals
Abstract
The study demonstrate the potentiality of satellite remote sensing technique for the generation of baseline information on forest types
including tree plantation details in Bidar forest division, Karnataka covering an area of 5814.60Sq.Kms. The Total Area of Bidar
forest division is 5814Sq.Kms analysis of the satellite data in the study area reveals that about 84% of the total area is Covered by
crop land, 1.778% of the area is covered by dry deciduous forest, 1.38 % of mixed plantation, which is very threatening to the
environmental stability of the forest, future plantation site has been mapped. With the use of latest Geo-informatics technology proper
and exact condition of the trees can be observed and necessary precautions can be taken for future plantation works in an appropriate
manner
Keywords:-RS, GIS, GPS, Forest Type, Tree Plantation
Factors influencing compressive strength of geopolymer concreteeSAT Journals
Abstract
To study effects of several factors on the properties of fly ash based geopolymer concrete on the compressive strength and also the
cost comparison with the normal concrete. The test variables were molarities of sodium hydroxide(NaOH) 8M,14M and 16M, ratio of
NaOH to sodium silicate (Na2SiO3) 1, 1.5, 2 and 2.5, alkaline liquid to fly ash ratio 0.35 and 0.40 and replacement of water in
Na2SiO3 solution by 10%, 20% and 30% were used in the present study. The test results indicated that the highest compressive
strength 54 MPa was observed for 16M of NaOH, ratio of NaOH to Na2SiO3 2.5 and alkaline liquid to fly ash ratio of 0.35. Lowest
compressive strength of 27 MPa was observed for 8M of NaOH, ratio of NaOH to Na2SiO3 is 1 and alkaline liquid to fly ash ratio of
0.40. Alkaline liquid to fly ash ratio of 0.35, water replacement of 10% and 30% for 8 and 16 molarity of NaOH and has resulted in
compressive strength of 36 MPa and 20 MPa respectively. Superplasticiser dosage of 2 % by weight of fly ash has given higher
strength in all cases.
Keywords: compressive strength, alkaline liquid, fly ash
Experimental investigation on circular hollow steel columns in filled with li...eSAT Journals
Abstract
Composite Circular hollow Steel tubes with and without GFRP infill for three different grades of Light weight concrete are tested for
ultimate load capacity and axial shortening , under Cyclic loading. Steel tubes are compared for different lengths, cross sections and
thickness. Specimens were tested separately after adopting Taguchi’s L9 (Latin Squares) Orthogonal array in order to save the initial
experimental cost on number of specimens and experimental duration. Analysis was carried out using ANN (Artificial Neural
Network) technique with the assistance of Mini Tab- a statistical soft tool. Comparison for predicted, experimental & ANN output is
obtained from linear regression plots. From this research study, it can be concluded that *Cross sectional area of steel tube has most
significant effect on ultimate load carrying capacity, *as length of steel tube increased- load carrying capacity decreased & *ANN
modeling predicted acceptable results. Thus ANN tool can be utilized for predicting ultimate load carrying capacity for composite
columns.
Keywords: Light weight concrete, GFRP, Artificial Neural Network, Linear Regression, Back propagation, orthogonal
Array, Latin Squares
Experimental behavior of circular hsscfrc filled steel tubular columns under ...eSAT Journals
Abstract
This paper presents an outlook on experimental behavior and a comparison with predicted formula on the behaviour of circular
concentrically loaded self-consolidating fibre reinforced concrete filled steel tube columns (HSSCFRC). Forty-five specimens were
tested. The main parameters varied in the tests are: (1) percentage of fiber (2) tube diameter or width to wall thickness ratio (D/t
from 15 to 25) (3) L/d ratio from 2.97 to 7.04 the results from these predictions were compared with the experimental data. The
experimental results) were also validated in this study.
Keywords: Self-compacting concrete; Concrete-filled steel tube; axial load behavior; Ultimate capacity.
Evaluation of punching shear in flat slabseSAT Journals
Abstract
Flat-slab construction has been widely used in construction today because of many advantages that it offers. The basic philosophy in
the design of flat slab is to consider only gravity forces; this method ignores the effect of punching shear due to unbalanced moments
at the slab column junction which is critical. An attempt has been made to generate generalized design sheets which accounts both
punching shear due to gravity loads and unbalanced moments for cases (a) interior column; (b) edge column (bending perpendicular
to shorter edge); (c) edge column (bending parallel to shorter edge); (d) corner column. These design sheets are prepared as per
codal provisions of IS 456-2000. These design sheets will be helpful in calculating the shear reinforcement to be provided at the
critical section which is ignored in many design offices. Apart from its usefulness in evaluating punching shear and the necessary
shear reinforcement, the design sheets developed will enable the designer to fix the depth of flat slab during the initial phase of the
design.
Keywords: Flat slabs, punching shear, unbalanced moment.
Evaluation of performance of intake tower dam for recent earthquake in indiaeSAT Journals
Abstract
Intake towers are typically tall, hollow, reinforced concrete structures and form entrance to reservoir outlet works. A parametric
study on dynamic behavior of circular cylindrical towers can be carried out to study the effect of depth of submergence, wall thickness
and slenderness ratio, and also effect on tower considering dynamic analysis for time history function of different soil condition and
by Goyal and Chopra accounting interaction effects of added hydrodynamic mass of surrounding and inside water in intake tower of
dam
Key words: Hydrodynamic mass, Depth of submergence, Reservoir, Time history analysis,
Evaluation of operational efficiency of urban road network using travel time ...eSAT Journals
Abstract
Efficiency of the road network system is analyzed by travel time reliability measures. The study overlooks on an important measure of
travel time reliability and prioritizing Tiruchirappalli road network. Traffic volume and travel time were collected using license plate
matching method. Travel time measures were estimated from average travel time and 95th travel time. Effect of non-motorized vehicle
on efficiency of road system was evaluated. Relation between buffer time index and traffic volume was created. Travel time model has
been developed and travel time measure was validated. Then service quality of road sections in network were graded based on
travel time reliability measures.
Keywords: Buffer Time Index (BTI); Average Travel Time (ATT); Travel Time Reliability (TTR); Buffer Time (BT).
Estimation of surface runoff in nallur amanikere watershed using scs cn methodeSAT Journals
Abstract
The development of watershed aims at productive utilization of all the available natural resources in the entire area extending from
ridge line to stream outlet. The per capita availability of land for cultivation has been decreasing over the years. Therefore, water and
the related land resources must be developed, utilized and managed in an integrated and comprehensive manner. Remote sensing and
GIS techniques are being increasingly used for planning, management and development of natural resources. The study area, Nallur
Amanikere watershed geographically lies between 110 38’ and 110 52’ N latitude and 760 30’ and 760 50’ E longitude with an area of
415.68 Sq. km. The thematic layers such as land use/land cover and soil maps were derived from remotely sensed data and overlayed
through ArcGIS software to assign the curve number on polygon wise. The daily rainfall data of six rain gauge stations in and around
the watershed (2001-2011) was used to estimate the daily runoff from the watershed using Soil Conservation Service - Curve Number
(SCS-CN) method. The runoff estimated from the SCS-CN model was then used to know the variation of runoff potential with different
land use/land cover and with different soil conditions.
Keywords: Watershed, Nallur watershed, Surface runoff, Rainfall-Runoff, SCS-CN, Remote Sensing, GIS.
Estimation of morphometric parameters and runoff using rs & gis techniqueseSAT Journals
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Land and water are the two vital natural resources, the optimal management of these resources with minimum adverse environmental
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watershed. Hence, in the present study an attempt has been made to understand the hydrological process of the catchment at the
watershed level by drawing the inferences from moprhometric analysis and runoff. The study area chosen for the present study is
Yagachi catchment situated in Chickamaglur and Hassan district lies geographically at a longitude 75⁰52’08.77”E and
13⁰10’50.77”N latitude. It covers an area of 559.493 Sq.km. Morphometric analysis is carried out to estimate morphometric
parameters at Micro-watershed to understand the hydrological response of the catchment at the Micro-watershed level. Daily runoff
is estimated using USDA SCS curve number model for a period of 10 years from 2001 to 2010. The rainfall runoff relationship of the
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aggregates. Mix design was carried out by Marshall Method. The Marshall Tests indicated highest stability values for asphalt
concrete (AC) mixes with 60% RAP. The optimum binder content (OBC) decreased with increased in RAP in AC mixes. The Indirect
Tensile Strength (ITS) for AC mixes with RAP also was found to be higher when compared to conventional AC mixes at 300C.
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Hybrid model for software development
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HYBRID MODEL FOR SOFTWARE DEVELOPMENT
Manju K Mathai1
, Rakhi Venugopal2
, John T Abraham3
1
Asst.professor, Dept. of Computer Science, KMM College, Thrikkakera
manjukm84@gmail.com
2
Asst.professor, Dept. of Computer Science, MES College, Edathala
rakhivenu@gmail.com
3
Professor, Department of Computer Science Bharat Mata College, Thrikkakera
johntabraham@yahoo.com
Abstract
The methods used for conventional software development cannot be used directly for the development of web applications. Today
most of the companies use scrum methodology for the development of web applications. But it seem to be difficult to use the scrum
in large projects because of the change of requirement late in the project and also it is difficult apply scrum in a big team. This
paper identifies and analyses the various changes required in the scrum methodology to make them applicable for the large
projects and reduce the cost.
Keywords: software development model, hybrid model, scrum methodology, prototype models
--------------------------------------------------------------------***----------------------------------------------------------------------
INTRODUCTION
To develop conventional software number of software
models is available. The base of all these models is the
waterfall model. Most of the software development
companies use any of these models for their development.
But these models cannot be applied for the development of
web application. This is because changes occur in the web
application frequently. Today scrum methodology is
commonly used for the development of web application. But
there will not be an exact structure for scrum methodology.
Different companies use the scrum in different ways. This is
because if any changes occur in the product backlog, late in
the project, then the development team takes more time for
the development after updating the sprint backlog.
Therefore it is necessary to analyze all the requirements in
the beginning. Active customer involvement is necessary for
the better analysis of requirement. Prototype models can be
used in the software development, if the requirements are
difficult to identify in the beginning. Therefore I am trying
to develop a hybrid model using prototype model in scrum
methodology.
HISTORY OF SOFTWARE DEVELOPMENT
Software can be defined as a set of instructions to do a
particular task up on execution by the processor. The first
software was written in 1940. Later different softwares were
developed and the development of these software passes
through different stages. These stages that the software
passes through during its development is called software
development life cycle(SDLC).Earlier the computer was
seen only in limited numbers and most of the companies do
their job manually. But later the situation changed and most
of the companies uses computers for their work and hence
the need of software increases tremendously. Now the
situation is different that small and fastest computers are
available in market.so fastest and reliable software is needed
to use in such computers.
To develop such reliable and efficient software different
methods and methodologies are available. The first
programming language developed was FORTRAN in
1957.It is good in handling numbers but is not suitable for
business needs. So to cope up with the business needs
COBOL was developed .Then John McCarthy of MIT
developed LISP. It is suitable for artificial intelligence.
After LISP pascal was developed which combines the
features of COBOL and ALGOL.Then in 1972 C
programming language was developed by DennisRitche. C
uses the features of PASCAL but have some additional
features to overcome the limitations of PASCAL. This make
the c programing commonly used in development of
software. In 1980 a new programing concept called object
oriented concept was introduced.Using this object oriented
concept a new language called c++ was developed. But we
can’t say that c++ is pure object oriented language. Sun
microsystem developed another portable object oriented
programming language called JAVA. Because of the
portability feature java is used by most programmers to run
their software on different platforms.The software
developers can develop their software using the different
methodologies to develop their software.
AGILE METHODOLOGIES
Today software companies are competing for their
software.so inorder to survive in this competing
environment they developers need to develop complex
projects. The common difficulties that the developers faced
during the development process are
• changing requirements: customer requirements are rapidly
changing during the development. Most of the customers do
not have a clear idea about their requirements at the
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beginning. Late changes make the programmersdifficult to
do modifications.
• Lack of Customer involvement: customer communication
is necessary to understand the requirements at the beginning.
Lack of customer involvement leads to higher chances of
project failure
So inorder to overcome these problems a new methodology
called agile methodology must be developed. In the case of
agile methodology, the software is delivered to the customer
in different increments. So the customer is able see the
software before completion. The different agile
methodologies are
Extreme programming
Scrum
Agile modeling etc.
LIMITATIONS OF AGILE METHODOLOGIES
Agile development helps in quick delivery of software. But
there are some limitations to apply agile methodologies.
Agile methogologies are not suitable if the system
needs much documentation.
The success of the project depend up on support from
the customer. If the customer is less available, the
requirement cannot be gathered correcltly.
Another problem is that the team must be composed of
experienced ones
Since there is no one to control the team, it is not
suitable for large team.
It is not suitable, if the team is in distributed
environment.
SCRUM METHODOLOGY
Scrum is based on agile methodology and it deliver the
software as increments in the form of sprints. Each sprint
takes two to four weeks time. The output of each sprint is a
functional product that can be delivered to the customer.
The different actors in the scrum development are product
owner, scrum team and the scrum master.The product owner
analyzes the requirements and creates a product backlog.
The whole functionality that is to be built is included in the
product backlog. The product owner prioritizes the backlog.
The team works based on the priority of requirements in the
product backlog. The product owner can change the
requirements in the product backlog whenever required.
Another feature of scrum methodology is burndown chart. It
shows the amount of work that is to be done within the next
scheduled date. The scrummaster is the person who protect
the team from distractions that block the team from
developing software. During the sprint the team conducts
daily meeting of 10-15 minutes. All team members are
required to attend scrum meetings
Roles in Scrum
There are mainly 3 roles
1. Product owner: The product owner is responsible for
analyzing the requirements and creating a product
backlog. He is responsible for prioritizing the
productlog.
2. Scrum master: ScrumMaster protect the team from
outside distractions and help them to reach the goal.
3. Scrum team: The team is responsible for building the
product. The team members must be experienced ones.
The last thing done in sprint is the sprint
retrospective. Many teams will do it immediately after the
sprint review. The entire team, including both the
ScrumMaster and the product owner should participate in
the retrospective. The ScrumMaster can facilitate this sprint
retrospective meeting by asking everyone to just shout out
ideas during the scrum.
Fig-1. Scrum Framework
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Advantages
Team gets an entire idea about the product before
development.
Accept the changes any time during the development.
quick development of product.
Able to develop product according to the priority of the
requirements
Never changes the schedule.
Teams are self manageable.
Work estimates are much easier
Disadvantages
Documentation is very less
Team members must be dedicated and experienced
once.
If team members does not cooperate well, the project
will face failure
Sometimes modification seems to be difficult after
sprint release
Necessary to get the requirements at the beginning
Customers must have clear idea about the requirements.
The agile manifesto must follows PDCA cycle which was
made popular by Dr. W. Edwards Deming. This process can
be used to improve the product.
PDCA AND SCRUM
Plan
In this the team discusses the requirements and objectives.
The team understands the goal and conditions for
acceptance in this stage.
Do
The team work together to achieve the objectives they
planed
Check
After each iteration the team conduct meetings to discuss the
acceptance of product, whether the product had meet the
planned objectives.
Act
If any deviation from the plan is observed, then the team
brainstorms and does necessary things to prevent such
deviations in future. This helps to provide better result in
next iteration.
The process starts with a clear set of aim and acceptance
criteria and the customer is happy because he can see the
output quickly and can make the changes based on the
market conditions.
PROTOTYPE MODEL
Prototype model should be used when all the requirements
are not able to be specified in advance. In that case the
development team develop a prototype with the known
requirements and give it to the customer. The customer uses
the prototype and specify the necessary modifications. Then
the development team make the necessary changes and this
process goes on continuously until the product is satisfied
with the customer. That is in prototype model the customer
is actively involved throughout the development. So if the
development of desired product requires a lot of interaction
with the customer and if the requirements are unknown then
prototype model is the best.
Fig-2 Prototype Model
Mainly there are 2 types of prototypes they are
1. Throw away prototype
2. Evolutionary prototype
Throwaway Prototype: After identifying the requirements,
the team develop a prototype and give to the user. The user
uses and specifies necessary modifications to the team. Then
the team is responsible to do necessary modifications and
this process goes on unit the product is accepted by the
customer. If the product is accepted then the prototype is
thrown and start developing the product from the beginning.
Evolutionary Prototypes: prototypes that evolve into the
final system through iterative incorporation of user
feedback.
Advantages
Users are actively involved in the development
Customers get a clear picture about the product before
completion.
Start development even if the requirements are not
known in advance
Less modification after the development of final
product.
THE PROPOSED HYBRID MODEL
The proposed hybrid model is developed to solve the
drawbacks of scrum methodology by incorporating the
prototype model in scrum.
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Difficulties in Scrum Development
Before the development, the team creates a sprint log
for full product and start developing. The customer can
make changes any time which in turn change the sprint
backlog. So a lot of time is wasted to update the sprint
backlog while developing. Sometimes they need to stop
the entire work and starts from the beginning.
When the team is in distributed environment, it may be
difficult for him to conduct daily meeting (In the case
of work at home, it is not possible for the person to
physically present).
In different roles in proposed model are
1. Product owner
2. Scrum master
3. Scrum team
Product Owner: product owner has the vision of how to
develop the product. He analyze and prioritize the
requirements and develop the product log.
Scrum Master: He is responsible for removing any
difficulties that are faced by the development team. He is
responsible for guiding the team, building a trustworthy
environment within the team facilitating discussions –
negotiation – communications and removing impediments
and problems.
Scrum Team:Team is responsible for direct communication
with the customer. They develop the product in different
iteration by developing the prototype and give it to the
customers for use. The team must be self manageable and
must be dedicated to their work.
Fig- 3. Interrelationships between the stakeholders:
Steps in proposed system
1. Analyze requirements by product owner
2. Prepare product backlog by product owner
3. Prepare sprint backlog by scrum team
4. Develop a working prototype of the product by
team
5. Release the prototype to the product owner and
customer
6. Development of 1st
iteration product
7. Demonstration and review(include team, scrum
master and product owner)
8. Release product to Product owner and the product
owner release it to customer
9. Update sprint backlog if any
10. Start next sprint by developing the working
prototype
11. Release complete product to customer
Fig-4. Hybrid Model
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Here the requirements are analyzed by the product owner
and the product owner creates a product backlog. He may be
able to prioritize the product any time. The team then creates
a sprint log. After the sprint log is accepted by the customer,
the actual development begins.
The team starts working by developing a prototype of 1st
iteration and given to the customer for use. The customer
can make any suggestions and modifications goes on until
the final product is released. The prototype used is
evolutionary type so time is not wasted do develop it again.
So the customer is actively involves in the development.
Since the customer uses the product while developing the
number of changes after the release of first sprint is less.
Also the daily meeting is omitted here and the meeting can
be arranged on weekly basis or in the middle of the sprint.
This is because when the meeting is conducted daily,
sometimes they don’t have to speak anything. And if it is
conducted on weekly or in the middle of the sprint all should
have something to speak. So it helps to save time by
avoiding the unnecessary meetings.
CONCLUSION AND FUTURE WORK
This paper analyses the difficulties while using scrum and
develop a new hybrid model by integrating prototype model
in scrum methodology. This helps to provide a structure to
the web application development and late modification in
the project and thus helps to use it in complex application.
As a future enhancement we can add additional
functionalities and may be able to develop a new model.
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