scholarly journals ROADELS: discrete information objects for production planning and control of road construction

2020 ◽  
Vol 25 ◽  
pp. 254-271
Author(s):  
Eran Haronian ◽  
Rafael Sacks
Keyword(s):  
Road Construction ◽  
Study Data ◽  
Point Of View ◽  
Triangular Prism ◽  
Production Flow ◽  
Fine Grained ◽  
Planning And Control ◽  
Construction Methods ◽  
Parking Lot ◽  
And Control

Road construction is fundamentally different to building construction, in terms of its products, the types of work and operations, and the resources used. One of the key differences from the point of view of planning and control of production flow is that roads are composed of geometrically continuous courses rather than discrete ‘products’, making work packaging difficult. Clearly defined work packages that comprise work performed on distinct products are central to lean construction methods of planning and control, such as the Last Planner System. We therefore propose a product schema which models road sections with distinct road course segments that are dynamically defined aggregations of 'roadels'. A roadel is a fine-grained vertical triangular prism object that can be dynamically aggregated with other roadels to represent a road course segment associated with a work package, a planned task, or an as-built section. The schema represents the continuous nature of road construction, and its discrete entities enable representation and computations of as-made work using the raw data obtained from machine-mounted sensors and land surveys. We describe the information schema and illustrate its use for computation and analysis of lean production flow metrics. The schema has been tested using case study data from a 25,000 m2 parking lot project, which was modeled with more than 560,000 roadels with as-made status data collected from 33 working days over a period of two months.

Ontological Analysis of Reference Models

2011 ◽  
pp. 56-81 ◽  
Author(s):  
Peter Fettke ◽  
Peter Loos
Keyword(s):  
Information Systems ◽  
Reference Model ◽  
Point Of View ◽  
Model Quality ◽  
Analysis And Evaluation ◽  
Reference Models ◽  
Planning And Control ◽  
Sound Theory ◽  
Ontological Analysis ◽  
And Control

Within the information systems field, reference models have been known for many years. A reference model is a conceptual framework and may be used as a blueprint for information systems development. Despite the relevance of reference model quality, little research has been undertaken on their systematical analysis and evaluation. In this chapter, we describe how reference models can be analyzed from an ontological point of view. Such an analysis consists of four steps: 1) developing a transformation mapping, 2) identifying ontological modeling deficiencies, 3) transforming the reference model, and 4) assessing the results. The usefulness of our method will be demonstrated by analyzing Scheer’s reference model for production planning and control. Although our approach is based on sound theory, we argue that this approach is not inherently superior to other approaches of reference model analysis and evaluation.

INSTITUTIONAL ANALYSIS, PLANNING AND CONTROL IN THE SYSTEM OF THE GOVERNMENTAL MANAGEMENT

2021 ◽  
Vol 2021 (7) ◽  
pp. 54-74
Author(s):  
Igor MANTSUROV ◽  
◽  
Yana KHRAPUNOVA ◽  
Valeriy OMELCHENKO ◽  
◽  
...  
Keyword(s):  
Institutional Economics ◽  
Institutional Analysis ◽  
New Institutional Economics ◽  
Point Of View ◽  
Planning Theory ◽  
Successful Implementation ◽  
Institutional Planning ◽  
Planning And Control ◽  
Governmental Management ◽  
And Control

The aim of this article is to develop a conceptual model of the institutional analysis, planning and control comprehensive system, which, according to the authors’ point of view, has to be integrated organically into the overall system of the governmental management. The article starts with the analysis of the of the “new institutional economics” methodology’s contributions to theoretical research in the area of applied economics, with particular emphasis to developing countries, particularly to Ukraine. Then authors continue by providing an overview of the new institutional economics theory and methodology as well as their several branches. Particularly, it is described the authors’ point of view in regard to the fundamental definitions of the institutional theory. One of the article’s purposes is to outline the basic features of the institutional planning theory and to justify its interpretation in the general planning theory framework. Carrying out this task, the authors describe the existing diversity of planning theories and the main achievements of the new institutional economics in the development and implementation of planning procedures. From authors’ point of view, institutional planning is the economic theory in which planning is described as the sequence of actions of organizations or/and people responsible for planning procedures and stakeholders in order to get the immediate and final planning results. The successful implementation of such model would help the planners and stakeholders to get the results that consist in the effectiveness of the national economy and its competitiveness.

scholarly journals A heijunka study for the production of standard parts included in a customized finished product

PLoS ONE ◽  
2021 ◽  
Vol 16 (12) ◽  
pp. e0260515
Author(s):  
Paulina Rewers ◽  
Jacek Diakun
Keyword(s):  
Control System ◽  
Production Planning ◽  
Production System ◽  
Crucial Role ◽  
Simulation Method ◽  
Production Planning And Control ◽  
Production Flow ◽  
Planning And Control ◽  
And Control ◽  
Order Execution

Efficient order execution plays a crucial role in the activity of every company. In production planning it is important to find a balance between the fluctuations of orders and stability of production flow regarding the company. One of the methods of achieving this goal is heijunka (production leveling). This paper presents a study of choosing the best variant of the production planning and control system for the production of standard parts. Three variants are investigated regarding delays in order delivery. The analysis of variants was conducted using a simulation method. The method of choosing the best variant for the production system being investigated is also proposed. The results show that the best variant is a mix of production leveling and production "for stock".

scholarly journals Ontological Evaluation of Scheer’s Reference Model for Production Planning and Control Systems

2011 ◽  
pp. 40-58
Author(s):  
Peter Fettke ◽  
Peter Loos
Keyword(s):  
Information Systems ◽  
Control Systems ◽  
Production Planning ◽  
Reference Model ◽  
Point Of View ◽  
Production Planning And Control ◽  
Model Quality ◽  
Analysis And Evaluation ◽  
Planning And Control ◽  
And Control

Within the information systems field, reference models have been known for many years. A reference model is a conceptual framework and may be used as a blueprint for information systems development. Despite the relevance of reference model quality, little research has been undertaken on their systematical analysis and evaluation. In this chapter, we evaluate Scheer’s reference model for production planning and control systems from an ontological point of view. The evaluation is based on the Bunge-Wand-Weber ontology. Several ontological anomalies are found in Scheer’s reference model. The obtained knowledge is useful for selecting, applying, and extending the reference model.

The Procedure of Reaction to Unexpected Events in Scheduling of Manufacturing Systems with Discrete Production Flow

2014 ◽  
Vol 1036 ◽  
pp. 840-845 ◽  
Author(s):  
Krzysztof Kalinowski ◽  
Cezary Grabowik ◽  
Wojciech Kempa ◽  
Iwona Paprocka
Keyword(s):  
Manufacturing Systems ◽  
Production Schedule ◽  
Production Flow ◽  
Unexpected Events ◽  
Typical Situation ◽  
Planning And Control ◽  
Scheduling Model ◽  
Correct Reaction ◽  
And Control ◽  
Selection Of

Rescheduling, as a process of updating the production schedule is a very important element of production planning and control. The occurrence of events that outdate existing schedule is a typical situation in real manufacturing systems. Correct reaction to them allows maintaining the continuity of production and the value of evaluation indicators at the satisfactory level. The paper presents the general rescheduling procedure including activities taken from the occurrence of a disturbance up to introduction of the revised schedule. The procedure includes following steps: registering and identification of the event parameters, decision-making steps about the need and time for schedule correction, steps of changing the scheduling model, selection of rescheduling method, selection of a set of operations to rescheduling and also steps of the creation, selection, and implementation of the new schedule .

Enhancing the critical path segments scheduling technique for project control1This paper is one of a selection of papers in this Special Issue on Construction Engineering and Management.

2012 ◽  
Vol 39 (9) ◽  
pp. 968-977 ◽  
Author(s):  
Tarek Hegazy ◽  
Wail Menesi
Keyword(s):  
Critical Path ◽  
Forensic Analysis ◽  
Project Planning ◽  
Project Control ◽  
Construction Engineering ◽  
Planning And Control ◽  
Construction Methods ◽  
Control Stage ◽  
And Control ◽  
Scheduling Technique

The critical path method (CPM) has been useful for project planning, yet its float calculation errors in cases of complex schedules hinders its ability to provide decision supports during project control, namely corrective actions and forensic analysis of schedules. To improve project control, this paper enhances the critical path segments (CPS) scheduling technique and incorporates a rich visualization of all as-built events made by all parties, including work stops, accelerations, and rework. Its improved critical path calculation incorporates the decision variables used at the project control stage such as revised construction methods. It also uses a modified float calculation with forward-pass only to avoid float errors. A case study is used to demonstrate the proposed technique and its benefits for project control. This research has the potential to revolutionize scheduling computations to resolve CPM drawbacks and provide decision support capabilities to help improve project planning and control.

DEVELOPING METHODOLOGY FOR CRADLE TO GRAVE COST PLANNING FOR INDUSTRIALISED BUILDING SYSTEM (IBS) IN MALAYSIA

2015 ◽  
Vol 77 (16) ◽  
Author(s):  
Siti Mazzuana Shamsuddin ◽  
Rozana Zakaria ◽  
Sarajul Fikri Mohamed ◽  
Abd. Latif Saleh ◽  
Christiono Utomo ◽  
...  
Keyword(s):  
Quantitative Research ◽  
Point Of View ◽  
Planning Method ◽  
Face To Face ◽  
Planning And Control ◽  
Cost Planning ◽  
Effective Cost ◽  
Building System ◽  
And Control ◽  
Quantitative And Qualitative Methods

This paper presents a proposed research methodology undertaken by a researcher to investigate the most accurate and appropriate method to generate a cradle to grave cost planning for Industrialised Building System (IBS) in the Malaysian construction industry. The methodology was intended to bring out accurate results and provide useful sources for the induction of emerging insights relating to the problem identified, which is how the current cost planning used for IBS projects helps in terms of cost control from pre-contract until the demolition of the building. At the end of this research, a proposed cradle to grave cost planning method was produced. To achieve the aims and objectives of this research, both quantitative and qualitative methods were applied. A quantitative research method in the form of a questionnaire survey was conducted to investigate which method is mostly used in preparing cost planning for IBS both from contractors’ and consultants’ point of view. The next stage of data collection was involved in-depth qualitative investigation using face-to face interviews meant to get in-depth views of each cost planning method’s advantages and barriers and what does it need to include to produce an effective cost planning for IBS elements. To complete the triangulation approach, expert group participations and validation were conducted to contribute essential thoughts in producing a comprehensive cradle to grave cost planning method, as well as validating the findings from the research. This method offers alternatives of cost planning and control over the project, and suitable for either IBS or conventional method.

scholarly journals Using Real-Time Indoor Resource Positioning to Track the Progress of Tasks in Construction Sites

2021 ◽  
Vol 7 ◽  
Author(s):  
Jianyu Zhao ◽  
Ergo Pikas ◽  
Olli Seppänen ◽  
Antti Peltokorpi
Keyword(s):  
Real Time ◽  
Construction Sites ◽  
Construction Productivity ◽  
Monitoring Task ◽  
Planning And Control ◽  
Construction Methods ◽  
Last Planner System ◽  
The Hours ◽  
Last Planner ◽  
And Control

Lean construction methods have demonstrated potential to improve construction productivity. For example, the location-based management system and the last planner system have increased the reliability of planning and control in construction production. However, these benefits are often reduced because of inaccurate manual data collection. To alleviate these problems, technologies for automated monitoring of workers have been developed to identify site events in chaotic environments. This paper aims to investigate whether a Bluetooth low-energy-based real-time indoor positioning system can monitor task progress from workers’ presence. Our findings suggest that the proposed system is a feasible solution for monitoring task-level progress when there are explicit dependencies between tasks. This method could automatically detect task start and finish times and estimate the hours required to complete a task. This enables the measurement of waste hidden inside tasks, which allows for interventions for improving flows and eliminating waste.

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