scholarly journals Change Orders in Iraqi Construction Projects

2018 ◽  
Vol 12 (1) ◽  
pp. 458-467
Author(s):  
Hafeth I. Naji ◽  
Wadhah Amer Hatem ◽  
Baydaa Hussain Maula
Keyword(s):  
Data Mining ◽  
Literature Review ◽  
Construction Projects ◽  
Good Faith ◽  
Behavior Changes ◽  
Change Orders ◽  
Data Mining Techniques ◽  
Change Order ◽  
Using Data ◽  
The Cost

Introduction: Change orders in construction are considered to be one of the greatest controversial problems that must be handled and also considered to be difficult for project management to reasonably resolve as any variation leads to claims. Any construction contract is agreed under the concept of “good faith,” which include that the parties will have to trust each other in order to work on agreeing on a contract and that contract is considered to be reasonable when there is no purpose of taking benefit of the parties throughout the contract life. However, as soon as the contract wants to be changed by generating a change order, the parties behavior changes in relation to the initial “good faith” environment Objective: The aim of the paper is to find the causes of the change order and its effect on the projects and then analyze the causes using data mining techniques. Methods: The methodology of the paper includes the following steps. Several factors that lead to change orders were gathered from the literature review. A questionnaire was formed and then distributed to the managers, owners, contractors and engineers. A review of the project's documents was conducted to find the number of change orders in the project and analysis of the causes of the change orders was done using data mining techniques. Results and Conclusion: The change orders have a harmful impact on the cost and it must be minimized, the change order was analyzed using Adda Boost technique and the accuracy was about 95 which is considered a very good result.

scholarly journals IDENTIFIKASI RISIKO CHANGE ORDER PROYEK KONSTRUKSI JALAN

2021 ◽  
Vol 5 (1) ◽  
pp. 225
Author(s):  
Mega Waty ◽  
Hendrik Sulistio
Keyword(s):  
Construction Projects ◽  
Construction Project ◽  
Road Construction ◽  
Real Data ◽  
Intermediate Frequency ◽  
Risk Identification ◽  
Construction Work ◽  
Change Orders ◽  
Change Order ◽  
The Cost

A Change Order is a written and legal work order that changes the scope of the original contract, with compensation that has been agreed upon by the owner and the contractor. Changes can be in the form of adding or reducing the scope of work, changing materials, or changing schedules. Change Order causes the cost of contract items to swell, planning errors and negligence as well as changes in scope that can be reduced by sharpening planning results. The scope of research on road construction in Indonesia, especially in DKI Jakarta and Banten provinces. This study aims to determine the identification of change orders in road construction projects. Data obtained from real data on road construction projects from 2013-2018 on 16 road construction project packages in the form of road construction project addendum contracts. Based on the addendum contract, added work, less work, addition of new items and removal of work items are determined. The identification of change order risk is seen from three aspects, namely the addition and reduction of work items, the removal of items and the addition of new items and the wishes of the owner, thereby increasing the cost of the change order contract. This study found 732 changes in construction work items. Risk identification is obtained from the frequency of changes above 35% which is an intermediate frequency that tends to increase the occurrence of change orders. The results of risk identification were obtained for 31 construction work items, the highest percentage was for Thermoplastic Road Marking work, followed by 30 other construction work items. Keywords: risk identification; change orders; road construction projects  AbstrakChange Order adalah perintah kerja tertulis dan sah  yang mengubah lingkup kontrak semula, dengan kompensasi  yang sudah disetujui oleh pemilik dan  kontraktor.  Perubahan dapat berupa penambahan atau pengurangan lingkup pekerjaan, perubahan material, atau perubahan jadwal. Change Order menyebabkan biaya  item kontrak membengkak, kesalahan perencanaan dan kelalaian serta perubahan ruang lingkup yang dapat dikurangi dengan mempertajam hasil perencanaan.. Lingkup penelitian pada konstruksi jalan di Indonesia khususnya  provinsi DKI Jakarta dan Banten. Penelitian  bertujuan untuk  mengetahui  identifikasi change order proyek konstruksi jalan. Data didapat dari data riil proyek konstruksi jalan dari tahun 2013- 2018 pada 16 paket proyek konstruksi jalan berupa kontrak addendum proyek konstruksi jalan. Berdasarkan kontrak addendum maka ditentukan pekerjaan tambah, pekerjaan kurang, penambahan item baru dan penghilangan item pekerjaan. Identifikasi risiko change order dilihat dari tiga aspek yakni penambahan dan pengurangan item pekerjaan, penghilangan item dan penambahan item baru dan keinginan dari pihak owner sehingga meningkatkan biaya kontrak change order.  Penelitian ini mendapatkan 732 perubahan  item pekerjaan konstruksi.  Identifikasi risiko didapat dari  frekuensi perubahan diatas 35% yang merupakan frekuensi menengah yang cenderung meningkatkan terjadinya change order. Hasil identifikasi risiko didapat pada  31 item pekerjaan konstruksi, yang tertinggi persentase pada pekerjaan  Marka Jalan Termoplastik, diikuti 30 item pekerjaan konstruksi lainnya.

scholarly journals DAMPAK CHANGE ORDER PADA PROYEK PERKERASAN JALAN

2020 ◽  
Vol 3 (1) ◽  
pp. 199
Author(s):  
Alexander Junius ◽  
Mega Waty
Keyword(s):  
Construction Projects ◽  
Road Construction ◽  
Relative Importance ◽  
Validity And Reliability ◽  
Change Orders ◽  
Importance Index ◽  
Change Order ◽  
Order Change ◽  
The Cost ◽  
The Impact

In a construction project, changes during the construction period are common. This change can be in the form of an increase or decrease in volume and type of work, changes in work specifications, or changes in the schedule for implementation. Changes in projects are often known as change orders. Change orders must be approved by all parties in a project namely, contractors, owners, and consultants. Change orders are caused by several factors such as changes in design, delays in procurement of goods, differences in field conditions, and others. The impact of this change order is felt by all parties involved in a project, but the change order has a different impact on each party involved. This study aims to determine the biggest impact of change orders from the contractor. In the questionnaire submitted the impact of change order is divided into several variables namely, the cost of quality, time, organization, and others. From the responses of respondents regarding the impact of change orders on road construction projects, an analysis was performed with the calculation of the Relative Importance Index (RII), and the biggest impact was obtained. Before the data is processed with RII, the validity and reliability tests are performed first. The biggest impact of change orders caused by change orders is that change orders increase the budget for contractors, change orders increase overhead costs, increase project duration, cause project costs overruns, and change orders cause a decrease in project profits. AbstrakPada suatu proyek konstruksi, perubahan selama masa konstruksi merupakan hal yang umum terjadi. Perubahan ini bisa berupa penambahan atau pengurangan volume dan jenis pekerjaan, perubahan spesifikasi pekerjaan, maupun perubahan jadwal pelakasnaan. Perubahan dalam proyek sering dikenal change order. Change order harus disetujui oleh semua pihak yang ada dalam suatu proyek, yaitu kontraktor, pemilik, dan konsultan. Change order disebabkan oleh beberapa faktor seperti perubahan desain, keterlambatan pengadaan barang, perbedaan kondisi lapangan, dan lain-lain. Dampak dari change order ini dirasakan seluruh pihak yang terlibat dalam suatu proyek, namun change order menimbulkan dampak yang berbeda pada tiap pihak yang terlibat. Penelitian ini bertujuan untuk mengetahui dampak change order terbesar dari pihak kontraktor. Dalam kuesioner yang diajukan dampak change order dibagi menjadi beberapa variabel yaitu, biaya mutu, waktu, organisasi, dan lainnya. Dari hasil tanggapan responden mengenai dampak change order pada proyek konstruksi jalan, dilakukan analisis dengan perhitungan Relative Importance Index (RII), dan didapat dampak terbesar. Sebelum data diolah dengan RII dilakukan uji validitas dan uji reliabilitas terlebih dahulu. Dampak change order terbesar yang ditimbulkan oleh change order adalah change order menambah anggaran untuk kontraktor, change order meningkatkan biaya overhead, menambah durasi proyek, menyebabkan biaya proyek membengkak, dan change order menyebabkan penurunan keuntungan proyek.

Analysis of Crop Yield Prediction of Kharif & Rabi Jowar Crops Using Data Mining Techniques

2017 ◽  
Vol 7 (11) ◽  
pp. 79
Author(s):  
Sujata Mulik
Keyword(s):  
Data Mining ◽  
Crop Yield ◽  
Crop Production ◽  
Climatic Factors ◽  
Crop Productivity ◽  
Yield Prediction ◽  
Data Mining Techniques ◽  
Agriculture Sector ◽  
Using Data ◽  
Rabi Crops

Agriculture sector in India is facing rigorous problem to maximize crop productivity. More than 60 percent of the crop still depends on climatic factors like rainfall, temperature, humidity. This paper discusses the use of various Data Mining applications in agriculture sector. Data Mining is used to solve various problems in agriculture sector. It can be used it to solve yield prediction.  The problem of yield prediction is a major problem that remains to be solved based on available data. Data mining techniques are the better choices for this purpose. Different Data Mining techniques are used and evaluated in agriculture for estimating the future year's crop production. In this paper we have focused on predicting crop yield productivity of kharif & Rabi Crops. 

Recognizing Job Apathy Patterns of Iraqi Higher Education Employees Using Data Mining Techniques

2019 ◽  
Vol 54 (4) ◽  
Author(s):  
Mustafa S. Abd ◽  
Suhad Faisal Behadili
Keyword(s):  
Higher Education ◽  
Data Mining ◽  
Psychiatric Patients ◽  
Human Life ◽  
A Priori ◽  
Psychological Research ◽  
Attribute Selection ◽  
Specific Class ◽  
Data Mining Techniques ◽  
Using Data

Psychological research centers help indirectly contact professionals from the fields of human life, job environment, family life, and psychological infrastructure for psychiatric patients. This research aims to detect job apathy patterns from the behavior of employee groups in the University of Baghdad and the Iraqi Ministry of Higher Education and Scientific Research. This investigation presents an approach using data mining techniques to acquire new knowledge and differs from statistical studies in terms of supporting the researchers’ evolving needs. These techniques manipulate redundant or irrelevant attributes to discover interesting patterns. The principal issue identifies several important and affective questions taken from a questionnaire, and the psychiatric researchers recommend these questions. Useless questions are pruned using the attribute selection method. Moreover, pieces of information gained through these questions are measured according to a specific class and ranked accordingly. Association and a priori algorithms are used to detect the most influential and interrelated questions in the questionnaire. Consequently, the decisive parameters that may lead to job apathy are determined.

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