To see the other types of publications on this topic, follow the link: Delays in Projects.
Dissertations / Theses on the topic 'Delays in Projects'
Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles
Consult the top 50 dissertations / theses for your research on the topic 'Delays in Projects.'
Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.
You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.
Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.
1
Besogul, Ercan. "Reasons Of Delays In Steel Construction Projects: An Application Of A Delay Analysis Methodology." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607159/index.pdf.
Full textAbstract:
Delay is one of the most common problems in the steel construction industry. At the time of bidding steel contractors plan tasks and assign resources according to the site visits, the information given in the contract and specifications related with the project. However, as the project progresses some conditions of the work may change. These changes may affect originally planned means and methods. Finally, the affected activities cause the project total cost and duration to increase. In steel construction projects, if not managed properly in accordance with the contract, changes are likely to result in claims between the project participants.
In this study, a delay analysis methodology which is based on time impact analysis is proposed. The aim of this methodology is to quantify impacts of work changes on the schedule and cost of steel construction projects and identify the responsible parties for these changes. A risk breakdown structure is presented to help decision-makers to identify probable sources of risk factors that usually result in time and cost overruns. The potential sources of change are categorized into 3 groups: contractor-related, owner-related and external factors. By using this structure, contractors may classify changes and assign the impacts of changes to the appropriate parties. The proposed methodology comprises of 3 steps: identification and quantification of delays, allocation of these delays to responsible parties and using TIA to calculate overall impact of changes on time and cost. The major benefits of this methodology area) its ability to handle and quantify changes in a step by step procedure, b) it provides a graphical representation of actual progress, and c) it helps decision-makers to give reliable decisions by monitoring the impact of changes during the project&
#8217
s life cycle. Construction professionals may use it to apportion impact of changes in a systematic and reliable way. Moreover, reports generated by using this methodology can provide evidence during the claim management process. An application of this methodology on a steel project demonstrates the superiority of the process in explaining the dynamic nature of changes and in apportioning the impacts between different parties in a systematic way.
2
Al-Humaidi, Hanouf M. "A fuzzy logic approach to model delays in construction projects." Columbus, Ohio : Ohio State University, 2007. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1185539202.
Full text
3
Al-Keim, Ali. "Strategies to Reduce Cost Overruns and Schedule Delays in Construction Projects." ScholarWorks, 2017. https://scholarworks.waldenu.edu/dissertations/4586.
Full textAbstract:
Senior managers fail to control time and costs of construction projects despite available advanced project management tools. Based on project management theory, the objective of this multiple case study was to explore the strategies senior managers use to reduce cost overruns and schedule delays in construction projects. Primary data were obtained from semistructured interviews with 3 senior managers from different construction project management companies who have successfully managed construction projects in Qatar. Data analysis process included a modified Van Kaam method. The transcribed interviews were interpreted and coded to generate themes and were validated through member checking and archival documents. The most centralized themes included (a) master planning, (b) processes and procedures, (c) managing design stage, (d) procurement management, (e) use of proper software, (f) setting project cost and time, and (g) deciding clear scope. A construction project may not succeed without appropriate planning for all stages of the project lifecycle. Managing the approval of the project components during the design stage contributes to reducing changes during construction, which is helpful to control cost and time. The project processes and procedures are meaningful roadmaps for the managers and decision makers. The implications for positive social change include the potential to maintain a cleaner Earth by reducing design and construction wastes. Reducing wastes improves the cost of construction and provides opportunities for people to own property at more affordable costs.
4
Motaleb, Omayma Hashim. "Development of a risk response model to handle delays of construction projects in the United Arab Emirates." Thesis, Robert Gordon University, 2014. http://hdl.handle.net/10059/1009.
Full textAbstract:
Due to the complex nature of construction projects, delay risks are more widespread in the construction sector than elsewhere. This poses a problem for the industry, since it is already at risk because of the recent global economic recession. Indeed, the financial crisis in late 2008 arrested economic development in the construction sector in the United Arab Emirates (UAE), with the result that investors’ confidence in the sector is severely depressed. In this situation, effective risk response is urgently required, since it aims to ensure that all project objectives, including avoiding delays, are met. In itself, the risk response process is a core element of risk management and perhaps the most important area needs to be improved. The aim of the research work that underpins this thesis was to develop a model for effective risk response to help in controlling delay risks. First, the strengths and weaknesses of current risk response processes have been analysed through a comprehensive critical literature review. Common causes of delay risks have been identified and various traditional measures used for their control have been critically reviewed. The greatest deficiencies in all published measures of delay risks control in construction projects are related to the lack of risk response development and appropriate measures (preventative/mitigating), within the risk management process. From the literature review it was also possible to identify the most appropriate methodology to adopt for the current research. A robust research methodology was then outlined which involved a questionnaire survey, case studies and interviews to confirm the literature review results and to achieve the research objectives. The questionnaire was piloted with nine construction professionals in the UAE for its suitability with the envisaged sample. After the pilot the questionnaire was refined then administered in 35 construction, consultancy, and contracting companies, attracting 102 usable responses. The results of the questionnaire confirmed the literature review results. Accordingly, six case studies from three companies were identified and supplemented by face-to-face interview, documents and direct observations. This strategy allowed the research evidence to be triangulated and thus the researcher to be more confident in testing a particular concept or theory. From the results it emerged that most organisations have immature project management systems and poor risk response processes. Hence, 22 Key Success Factors (KSFs) of preventative measures and 15 KSFs of mitigation measures were identified to achieve risk response development by maturity levels in the pre-construction stage and in the construction stage, respectively. The analysis of the case studies revealed the great potential for employing five KSFs of mitigation measures in the risk response development to control delay risks. Having considered these outcomes a risk response development model to control delay risks has been outlined. The model has been carefully validated, both theoretically and in practical terms, through the discussions with interviewees from the selected case studies. The interviewees agreed on the practicality of the model to identify the risk response development, however it is recommended that the project risk event severity and the company capability would need to be taken into account, and the demand to format the test stage for the maturity levels at the transition stages (Disciplinary, Consistency, Integration, and Optimisation) to achieve the effectiveness and the transparency of the model. Based on the validation, it is anticipated that by developing the risk response model, the process itself will be more objective, particularly in delay risks control. The study brings forward findings that can be promoted as the means to enhance opportunities to control delay risks, and benefit practitioners in the UAE given that so far, there has been no model of risk response development by maturity levels for delay risks control. Moreover, one of the unique features of the study is the creation of new knowledge by focusing on the UAE. At the same time, the use of maturity modeling to handle construction delay risks provides new knowledge for a wider audience.
5
Oztas, Ahmet. "The mitigation of the effects of delays in construction projects : a knowledge based system approach." Thesis, University of Manchester, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.683471.
Full text
6
Narh, Natasha Afi. "Evaluating delays in execution of public sector construction projects : a study of roads and highways in Ghana." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20539.
Full textAbstract:
This study investigates delays in execution of public sector construction projects in Ghana. A review of literature revealed that previous studies on construction projects focused on cost, time overruns, as well as the causes of delays. It is against this background that this study assesses the causes and effects of construction project delays and means of averting such delays. The research design used in obtaining empirical data from a sample of 290 respondents was a survey research design. Questionnaires were used as instruments for data collection, and a Statistical Package for Social Sciences (SPSS) used for the data analysis. The statistical tools employed in the study include frequencies, percentages, Relative Importance Index (RII), Spearman correlation analysis and Chi-Square Test. The findings of the study revealed that some critical contributors to road construction project delay in Ghana during the project execution phase are clients' low cash flow to complete the project, contractors' financial constraints on the project, and improper planning of the project life cycle especially during the bidding phase. Site restriction, weather effects and changes in governmental regulations were found to be the least contributors to projects delays. These delays have a negative impact on project performance, project duration and force project participants to modify and adjust their finances. Investigating the way forward, the study explored strategies that are for averting the delays in executing construction projects. The study found that respondents were undecided in their rating on adequacy of training for project staff on specific requirements of construction projects. Other factors such as adequate of knowledge of contractors on project task, effective mobilization and release of resources, early engagement of project managers as well as adequate and effective supervision of construction activities were each identified as strategies that are applicable and feasible in averting the delays in executing road construction project activities.
7
Dayi, Songul. "Schedule Delay Analysis In Construction Projects: A Case Study Using Time Impact Analysis Method." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612823/index.pdf.
Full textAbstract:
Inadequate or weak preparatory work before starting construction of any structure may cause serious problems during the construction period. For example, projects without sufficient detailed drawings or construction schedules and a disorganized building site can create many problems in the management and completion of the construction works. Consequently, the cost of construction increases digressively, the construction duration of the project extends and the quality of construction is affected adversely.
This study dwells on the importance of construction schedules in achieving the aim of producing good quality construction work within the specified duration. Monitoring continuously the interactive relation concerning delays in construction schedules and contractor demands is a complicated process. Here the simplest and basic approach is that, both for owner and contractor, time is money and for this reason construction schedule delays should be analyzed and corrective measures should be taken in a timely manner. The main purpose of this study is to investigate the causes of construction schedule delays and the methods of schedule delay analyses. In this context completion construction works of a covered swimming pool building in Ankara was selected as a case study for analyzing project scheduling and the delays therein. The &ldquoTime Impact Analysis Method&rdquo
(TIA) was applied to the case study project using PRIMAVERA®
software in order to determine the construction schedule delays
to measure the impacts of these delays on the project completion duration
and to allocate responsibility amongst the project participants for preventing delay claims. After the application of the delay analysis it was observed that the delays in the critical activities extended the project duration by 57 days in total i.e. by 15.4 % of the estimated construction period. Fines should have been paid by the contractor because of 31-days non-excusable delays. Also, the contractor should have been given a time extension of 26-days due to 22-days excusable compensable delays and 4-days excusable non-compensable delays which were beyond the control of the contractor. These delays were caused due to organizational deficiencies of the owner, the bureaucracy of the provincial municipality, the lack of detail drawings during the municipality application, the lack of experience of the contractor, problems in material procurement, unforeseeable weather conditions and shortages of qualified employees of the subcontractors. It was observed that of these all except one correspond to the important causes of delays as reported in literature concerning public projects in Turkey.
8
Beşoğul, Ercan Supervisor :. Dikmen Toker İrem. "Reasons of delays in steel construction projects : an application of a delay analysis methodology \h [Electronic resource] / \c Ercan Beşoğul, Supervisor Assoc. Prof. Dr. İrem Dikmen Toker." Ankara : METU, 2006. http://etd.lib.metu.edu.tr/upload/12607159/index.pdf.
Full text
9
Altoryman, Anood Saleh. "Identification and assessment of risk factors affecting construction projects in the Gulf region : Kuwait and Bahrain." Thesis, University of Manchester, 2014. https://www.research.manchester.ac.uk/portal/en/theses/identification-and-assessment-of-risk-factors-affecting-construction-projects-in-the-gulf-region-kuwait-and-bahrain(62ddc6ab-7d43-4e69-bc8b-95b550c62b41).html.
Full textAbstract:
Many construction projects suffer from mismanagement despite continuous improvement in the field of project risk management. With the construction boom in the Middle East, and especially the Gulf region, construction projects suffer from a high failure rate. The lack of the implementation of standard risk management methods in the construction industry of the Gulf region leads to construction projects that suffer from poor performance, delays, disputes and claims. In order to design a standard risk management model, there is a need for an in-depth study of the construction environment to lay down the foundation for designing a Standard Construction Risk Management Model in the future. This study aims to identify and assess risk factors during the construction phase of construction projects in the Gulf region focusing on two countries of the Gulf region – the State of Kuwait and Kingdom of Bahrain. The risk factors (RF) were identified and assessed and responsiblty shares were allocated to construction parties: clients, consultants and contractors. The research strategy was a Sequential mixed-method. It was adopted by means of interview surveys followed by a questionnaire. The study started with a qualitative approach in which eleven practitioners were interviewed to evaluate and validate a questionnaire. This was followed by questionnaires distributed to a representative sample of 140 consultants, 128 contractors and 139 clients in the State of Kuwait, in addition to 71 consultants, 99 contractors and 78 clients in the Kingdom of Bahrain, to assess the negative impact of the risk factors during the construction phase on the completion of construction projects. Parametric tests were used to analyse the collected data. Including, the Analysis of Variance (ANOVA) test, the independent-samples t-test, and Pearson correlation coefficient (r) test. The study revealed a difference in perception of the risk factors negative impact on project completion between Kuwait and Bahrain, Bahrain perceives highest degree of impact on projects. On the categories level, both countries agreed on the Finance category as the main factor threatening project completion, and the External category as having the least impact. In Kuwait, almost all parties agreed on the negative impact of all categories on project completion except contractors who have different perception on management category. Furthermore, clients and consultants held different perceptions on the impact of design category. Bahrain results reveal significant differences in perceptions on the impact of categories between clients and the other parties, however there are slight differences between consultants and contractors in all categories. The limitations of the study include only large contractors and consultants in Kuwait and Bahrain were included in the study. The study was limited to the construction phase of construction projects and only six categories of risk factors were included in the study and This research was based on practitioners and participants opinions rather than actual occurrences on projects.
10
Odimabo, Onengiyeofori. "Risk management system to guide building construction projects in developing countries : a case study of Nigeria." Thesis, University of Wolverhampton, 2016. http://hdl.handle.net/2436/618537.
Full textAbstract:
Project risk assessment is an effective tool for planning and controlling cost, time and achieving the technical performance of a building construction project. Construction projects often face a lot of uncertainties, which places building construction projects at the risk of cost, time overruns as well as poor quality delivery. Considering the limited resources of developing countries, there is need to complete building projects on-time, on-budget, and to meet optimal quality hence, risk management is an important part of the decision making process in construction industry as it determines the success or failure of construction projects. In line with this need, this research aims to establish a system to improve the time, cost and quality performance of building construction projects in developing countries, through a comprehensive risk management model that ensures the expectations of clients are met. To achieve the aim of this research, a mixed methodological approach was adopted. Through the review of literature, a conceptual risk management framework suitable to elaborate risk assessment of building construction projects especially for developing countries was developed. A questionnaire survey using a nonprobability sampling technique was conducted to elicit information from construction professionals in Nigeria to assess their perception of 79 risk factors identified from literature review based on the likelihood of occurrence and impact on projects using a five point scale. Responses from 343 construction professionals were drawn from 305 contractors and subcontractors and 38 clients (private and public) within the Nigerian construction sector. Response data was subjected to descriptive statistics to depict the frequency distribution and central tendency of responses. Subsequently, the risk acceptability matrix (RAM) was adopted to categorise and prioritise risk factors. 27 critical risks that affect building construction projects were identified. A Bayesian Belief Network (BBN) model was developed by structural learning and used to examine the cause and effect relationship amongst the 27 critical risk factors. The developed BBN model was subjected to validation using a multiple case study of two building construction projects in Nigeria. The result showed the interrelation between the 27 risk factors and how they contributed to cost and time overruns as well as quality problems. The critical risks directly affecting the cost of building construction project were: fluctuation of material prices; health and safety issues; bribery and corruption; material wastage; poor site management and supervision; and time overruns. The critical factors identified to directly affect quality were: supply of defective materials; working under harsh conditions; improper construction methods; lack of protective equipment; ineffective time allocation; poor communication between involved stakeholders; and unsuitable leadership style. Time overruns on building construction projects was directly caused by: quality problems; low productivity; improper construction methods; poor communication between involved parties; delayed payments in contracts; and poor site management and supervision. As a consolidation of the findings of this research, a BBN model for identifying risk factors that directly affect time, cost and quality on building construction projects has been developed which has the potential for assisting construction stake holders to manage risks on their projects. In view of the findings, a best practice system for risk management in building construction projects in Nigeria has been developed with an implementation guide to help building construction practitioners to successfully implement risk management on their building construction projects. Suitable risk responses, also in the form of recommendations have been identified. The strategies include actions to be taken to respond to risks based on their perceived significance or acceptability as well as some positive risk responses, such as exploiting, sharing, enhancing and accepting, and other negative risk responses, such as avoidance, mitigation transfer and acceptance.
11
Lloyd, Evan Robert. "A model for the economic analysis of road projects in an urban network with interrelated incremental traffic assignment method." University of Western Australia. Economics Discipline Group, 2005. http://theses.library.uwa.edu.au/adt-WU2005.0083.
Full textAbstract:
[Truncated abstract] In an urban network, any change to the capacity of a road or an intersection will generally result in some traffic changing its route. In addition the presence of intersections creates the need for frequent stops. These stops increase the fuel consumption by anywhere between thirty to fifty percent as evidenced by published standardised vehicle fuel consumption figures for urban and for country driving. Other components of vehicle operating costs such as tyre and brake wear and time costs will also be increased by varying amounts. Yet almost all methods in use for economic evaluation of urban road projects use open road vehicle operating costs (sometimes factored to represent an average allowance for stopping at intersections) for one year or sometimes two years in the analysis period and then make assumptions about how the year by year road user benefits may change throughout the period in order to complete the analysis. This thesis will describe a system for estimating road user costs in an urban network that calculates intersection effects separately and then adds these effects to the travel costs of moving between intersections. Daily traffic estimates are used with a distribution of the flow rate throughout the twenty-four hours giving variable speed of travel according to the level of congestion at different times of the day. For each link, estimates of traffic flow at two points in time are used to estimate the year-by-year traffic flow throughout the analysis period by linear interpolation or extrapolation. The annual road user costs are then calculated from these estimates. Annual road user benefits are obtained by subtracting the annual road user costs for a modified network from the annual road user costs for an unmodified network. The change in the road network maintenance costs are estimated by applying an annual per lane maintenance cost to the change in lane-kilometres of road in the two networks. The Benefit Cost Ratio is calculated for three discount rates. An estimate of the likely range of error in the Benefit Cost Ratio is also calculated
12
Miterev, Maksim, and Ruxandra Nedelcu. "The Nature of the Relationship between Project Complexity and Project Delay : Case study of ERP system implementation projects." Thesis, Umeå universitet, Handelshögskolan vid Umeå universitet (USBE), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-51701.
Full textAbstract:
In the context of a growing social complexification, projects have evolved in the pastdecades from simple endeavours to complex and uncertain undertakings. Consequently,project complexity has emerged as an important research direction, and recently severalproject complexity frameworks have been suggested. However, little research has beendone in this area and there has been no study on the relationship of project complexity,in its holistic sense, and the risk of delay. Therefore, the study investigates the intricaterelationship between project complexity and project delay. The research is conducted inthe context of Enterprise Resource Planning system (ERP) implementation projects,which are inherently complex and often record delays. The study has a qualitative nature and adopts an inductive approach. Nine ERPimplementationprojects have been studied in order to answer the research question.Several sources of evidence (semi-structured interviews and questionnaires) have beenutilized to ensure the credibility of the research findings through triangulation. The study contributes to the research field by verifying and augmenting the existingframeworks on reasons for project delay, complexity categories and their interplay. Itwas identified that complexity in a holistic sense represents a necessary condition forproject delay. Moreover, the study showed that although ERP projects are oftenconsidered to be technically complex, their complexity stems mainly from ‘subjective’(or perceived) and ‘uncertainty’ complexity dimensions. Finally, the conceptual modelof Eden et al. (2005) was modified to reflect the findings of the study.
13
Ojo, Emmanuel Opeyemi. "Project Managers' Capacity-Planning Practices for Infrastructure Projects in Qatar." ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/7320.
Full textAbstract:
Infrastructure project delays and cost overrun are caused by ineffective use of organizational skills, processes, and resources by project managers in the construction industry. Cost overrun and schedule delay in Qatari infrastructure projects have had damaging effects on the national economy by way of claims and litigation, contractual disputes, delays in dependent projects, and project abandonment. The purpose of this qualitative case study was to explore the perceptions of project managers regarding how they utilize capacity-planning practices to mitigate project schedule delay and cost overrun in government-funded infrastructure projects in Qatar. This study was framed by three conceptual models developed by Gill to outline the capacity management needs within a construction company: (a) the time horizon model, (b) the individual-organization-industry levels model, and (c) the capacity development across components model. Date were collected from semistructured interviews with 8 participants, observational field notes, and archival data regarding Qatari infrastructure project managers' experiences in capacity-planning practices. Thematic analysis of textual data and cross-case synthesis analysis yielded 5 conceptual categories that encompassed 15 themes. The conceptual categories were (a) resources to meet performance capacity, (b) knowledgeable and skillful staff, (c) short- and long-term planning strategy, (d) cost overrun issue, and (e) time management. Findings may be used to promote timely completion of infrastructure projects, which may benefit citizens, construction companies, and the economy of Qatar.
14
Kruger, I. J. "Project management delays : project management delays with specific reference to the building and construction industry of the Western Cape." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51888.
Full textAbstract:
Thesis (MBA)--Stellenbosch University, 2000.ENGLISH ABSTRACT: The purpose of this study is to investigate reasons for delays and disruptions in project management, with specific reference to the building and construction industries of the Western Cape. The reason for the study can be posed in the form of a question, "Why, even though the construction and building industry possess the skills of highly competent people do a substantial percentage of projects still experience significant delays and disruptions often leading to financial and program difficulties?" The study can point to certain problem areas in the building and civil industries that might need to be addressed in order to make the industry more manageable and even to get the industry better aligned with the rapid changing business environment. It is not unrealistic to make the statement that a fast developing industry like the Information Technology industry will have a huge influence on the manner in which building and civil projects will be managed in the future. Electronic Networking Technology (ENT) is a new and very powerful tool in the discipline of project management. It is clear from the study that ENT is not widely used in the building and construction industries. The cellphone is probably the piece of electronical equipment that has had the biggest impact on the way projects are managed in the past couple of years. By far the biggest form of communication in a project is orally informal. Already cellphones are being integrated with ENT and this will make managing from site or while on the move even easier. The use of ENT appears to be limited to e-mail messages. ENT is not an accepted project management tool in the industries yet. It will take a good couple of years before this is entrenched, accepted and widely used in construction project management. It is the author's opinion that ENT will be brought into the industries, as the newly qualified construction project managers move upward through the ranks. It is also clear from the study that the role-players in the industry are very aware of a commercial division in the industries. On the one side of the division is the clients and the consultants and on the other side, the main contractors, sub-contractors and suppliers. This divide is perceived as an unhealthy divide and all parties would like to see it narrowed or completely removed. Clients, consultants, contractors and suppliers need to work more closely together to remove this commercial division present in the industry. This would require a whole paradigm shift.
AFRIKAANSE OPSOMMING: Die doel van hierdie mini-werkstuk is om die redes vir vertragings en versteurings in projekbestuur te ondersoek, met spesifieke verwysing na die konstruksie- en boubedryf in die Wes Kaap. Die rede vir die studie kan in die vorm van 'n vraag gestel word, "Waarom, alhoewel die konstruksie- en boubedryf beskik oor die vaardighede van hoogs bevoegde persone, is daar nog steeds 'n substantiële hoeveelheid vertragings en versteurings in projekte wat dikwels finansiële and tydsverloop probleme tot gevolg het?" Die studie sal poog om sekere probleem areas in die konstruksie- en boubedryf uit te wys, wat indien aangespreek sou word, die konstruksie en boubedryf beter sal sinkroniseer met die snel veranderende besigheids omgewing waarbinne die bedrywe funksioneer. Dit is nie vergesog om die stelling te maak dat 'n vinnig ontwikkelende industrie soos die Informasie Tegnolgie industrie 'n enorme invloed sal hê op die manier waarop konstruksie- en bouprojekte in die toekoms bestuur sal word nie. Elektroniese Netwerk Tegnologie (ENT) is 'n relatief nuwe en kragtige hulpbron in die disipline van projekbestuur. Dit was duidelik vanuit die studie dat ENT nog nie intensief in die konstruksie- en boubedryf gebruik word nie. Die selfoon is waarskynlik die elektroniese apparaat wat die grootste impak op projekbestuur gehad het die afgelope paar jaar. Die oorgrootte meerderheid van kommunikasie in projekbestuur word mondelings informeel gedoen. Selfone word alreeds geintegreer met ENT deur WAP (Wireless Application Protocol) tegnologie. Dit sal projekbestuur vanaf die terrein of op die pad aansienlik vergemaklik. Die gebruik van ENT bleik beperk te wees tot e-pos boodskappe. ENT is hoegenaamd nog nie 'n ten volle benutte hulpbron in die konstruksie- en bou bedryf nie. Dit sal nog 'n hele paar jaar neem voordat ENT 'n behoorlik ingeburgerde hulpbron in die konstruksie en boubedryf is. Dit is die skrywer se opinie dat ENT in die konstruksie en boubedryf ingefaseer sal word soos die nuwe jong konstruksie- en boubedryf projekbestuurders opwaarts deur die bedryf beweeg. Dit is ook duidelik vanuit die studie dat daar 'n duidelike kommersiële skeiding in die konstruksie- en boubedryf teenwoordig is. Aan die een kant van die skeiding het ons die kliënt en die konsultant en aan die ander kant van die skeiding het ons die kontrakteur, sub-kontrakteur, vervaardiger en verskaffer. Die skeiding dra by tot vertragings en versteurings van projekte. Die skeiding word beskou as 'n ongesonde skeiding en daar moet gepoog word om die skeiding te vernou of te verwyder. Kliënte, konsultante, kontrakteurs, vervaardigers en verskaffers moet nouer saamwerk om die skeiding te vernou of te verwyder. 'n Paradigma-skuif in die hele bedryf sal hiervoor nodig wees.
15
Ghaziani, Aydin. "A Fuzzy Delay Assessment Tool For Construction Projects." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12614595/index.pdf.
Full textAbstract:
It is a known fact that construction projects do not often complete on time due to several reasons related with the unexpected changes in the project conditions, external factors or performance of project participants. Since construction projects are unique and limited information is available at the beginning of the projects, prediction of delays is a difficult task. However, if the delays can be assessed at the early stages, their impacts might be minimized, some of the delays can even be eliminated.
This study introduces a delay assessment methodology which can be used to predict delays both at the activity level and project level. Fuzzy logic and fuzzy network analysis form the basis of this methodology. A software has been developed using the proposed delay assessment methodology and a delay taxonomy developed by Bilgin (2011). Project management teams can use the developed tool to predict delays and also evaluate impacts of delays on a project`s schedule.
16
Moore, Simon Peter. "Delays in the emergency department and their effects on the ambulance provider." CSUSB ScholarWorks, 2002. https://scholarworks.lib.csusb.edu/etd-project/2067.
Full text
17
Bosley, Michael John. "An experimental investigation of time delays in software project staffing." Thesis, Monterey, Calif. : Springfield, Va. : Naval Postgraduate School ; Available from National Technical Information Service, 1994. http://handle.dtic.mil/100.2/ADA283333.
Full text
18
Helzer, Kimberly Faye. "Reinforcing functions of androgyny delay of reinforcement." CSUSB ScholarWorks, 1987. https://scholarworks.lib.csusb.edu/etd-project/246.
Full text
19
Alkharmany, Abdullah. "Project management : the effect of Saudi national culture on the attitudes of key stakeholders towards delay in construction projects in Saudi Arabia." Thesis, University of Brighton, 2017. https://research.brighton.ac.uk/en/studentTheses/8ed9c665-677f-4769-980b-49e70a801717.
Full text
20
Plummer, Judith Kate. "Assessing the effects of pre-construction delay in hydropower projects." Thesis, University of Cambridge, 2014. https://www.repository.cam.ac.uk/handle/1810/283946.
Full text
21
Ntoyanto, Sikholiwe. "Factors causing delay of modification projects at Koeberg Power Station." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/23742.
Full textAbstract:
Project delays are common in construction projects, and at Koeberg Nuclear Power Station, modification and outage projects are not exempted from these delays. Subsequently, these project delays have a detrimental effect on the Eskom organization in terms of its mandate to supply electricity to promote and boost the South African economy. Therefore, timely project delivery within the Eskom business is of paramount importance in ensuring the utility honours its mandate. The aim of this research study is to identify factors and that influence untimely delivery of plant system modification projects which at times affect the timely delivery of outage projects at Koeberg Power Station. The research study focuses on the following objectives: (i) identification of factors contributing to untimely delivery of plant system modification projects at Koeberg Power Station, (ii) analysis of identified factors to determine the main determinants of untimely delivery of plant system modification projects, (iii) assessing whether a gap or correlation exists between the factors identified through the study and the factors the project management fraternity believe to have a significant contribution to the untimely delivery of projects, and (iv) to recommend mitigating measures that Koeberg Power Station may consider in addressing the consequences of identified project delay factors on modification projects. Through the use of interactive management research methodology, a total of 92 identified project delay factors were reduced to 21 principal project delay factors that form part of the interpretive structural model. The results of the research study show that the main determinant of modification project delays at Koeberg Power Station is the "proficiency of a project manager". Proficiency of a project manager relates to the ability of a project manager to accomplish the required project tasks based on his or her skills, competency, and experience within the project management field. Inadequate proficiency of a project manager was found to be the major cause of modification delays at Koeberg Power Station. Proficiency of a project manager could not be directly matched with other project delay factors identified from the reviewed literature, but it could be matched with the "poor professional management" identified by Fugar and Agyakwah-Baah (2010). In addition, the matching of "proficiency of a project manager" project delay factor could also be established through other project delay factors identified by this study. These include poor leadership, competency, and skill of a project manager in communication, planning, coordination, risk management, and scope management. The study found that, a total of 9 out of 21 project delay factors identified are unique to Koeberg Power Station.
22
Vereau, Melanie, Jose Rojas, Daniel Aderhold, Carlos Raymundo, and Francisco Dominguez. "Designing a Procurement Management Model to Reduce Project Delays in a Hydraulic and Automation Systems Company." Springer Verlag, 2020. http://hdl.handle.net/10757/656135.
Full textAbstract:
El texto completo de este trabajo no está disponible en el Repositorio Académico UPC por restricciones de la casa editorial donde ha sido publicado.This study focuses on the factors that cause project delays in an industrial hydraulic company. More specifically, the article also addresses the development of on-demand engineered products and the impact of the procurement process on delays. As part of the investigation, the authors assessed the historical data of the projects completed in 2017 before determining the critical path for each project in an attempt to identify which project stages may be improved. After further assessing the resulting data, the planning and procurement procedures were deemed as requiring improvement. Next, the article proposes a training plan and new procedures based on the Project Management Body of Knowledge guidelines for Engineer-to-Order projects. In conclusion, the results showed that delays were effectively reduced after implementing these new procedures in both Project Management stages.
23
Costa, Daniel Alencar da. "Understanding the delivery delay of addressed issues in large software projects." PROGRAMA DE P?S-GRADUA??O EM SISTEMAS E COMPUTA??O, 2017. https://repositorio.ufrn.br/jspui/handle/123456789/22685.
Full textAbstract:
Submitted by Automa??o e Estat?stica (sst@bczm.ufrn.br) on 2017-04-17T21:35:20Z
No. of bitstreams: 1
DanielAlencarDaCosta_TESE.pdf: 9198560 bytes, checksum: 463f875eda2671bd33beca615f72eef3 (MD5)Approved for entry into archive by Arlan Eloi Leite Silva (eloihistoriador@yahoo.com.br) on 2017-04-18T22:34:50Z (GMT) No. of bitstreams: 1 DanielAlencarDaCosta_TESE.pdf: 9198560 bytes, checksum: 463f875eda2671bd33beca615f72eef3 (MD5)
Made available in DSpace on 2017-04-18T22:34:50Z (GMT). No. of bitstreams: 1 DanielAlencarDaCosta_TESE.pdf: 9198560 bytes, checksum: 463f875eda2671bd33beca615f72eef3 (MD5) Previous issue date: 2017-02-08
The timely delivery of addressed software issues (i.e., bug fixes, enhancements, and new features) is what drives software development. Previous research has investigated what impacts the time to triage and address (or fix) issues. Nevertheless, even though an issue is addressed, i.e., a solution is coded and tested, such an issue may still suffer delay before being delivered to end users. Such delays are frustrating, since end users care most about when an addressed issue is available in the software system (i.e, released). In this matter, there is a lack of empirical studies that investigate why addressed issues take longer to be delivered compared to other issues. In this thesis, we perform empirical studies to understand which factors are associated with the delayed delivery of addressed issues. In our studies, we find that 34% to 98% of the addressed issues of the ArgoUML, Eclipse and Firefox projects have their integration delayed by at least one release. Our explanatory models achieve ROC areas above 0.74 when explaining delivery delay.We also find that the workload of integrators and the moment at which an issue is addressed are the factors with the strongest association with delivery delay.We also investigate the impact of rapid release cycles on the delivery delay of addressed issues. Interestingly, we find that rapid release cycles of Firefox are not related to faster delivery of addressed issues. Indeed, although rapid release cycles address issues faster than traditional ones, such addressed issues take longer to be delivered.Moreover, we find that rapid releases deliver addressed issues more consistently than traditional ones. Finally, we survey 37 developers of the ArgoUML, Eclipse, and Firefox projects to understand why delivery delays occur. We find that the allure of delivering addressed issues more quickly to users is the most recurrent motivator of switching to a rapid release cycle.Moreover, the possibility of improving the flexibility and quality of addressed issues is another advantage that are perceived by our participants. Additionally, the perceived reasons for the delivery delay of addressed issues are related to decision making, team collaboration, and risk management activities. Moreover, delivery delay likely leads to user/developer frustration according to our participants. Our thesis is the first work to study such an important topic in modern software development. Our studies highlight the complexity of delivering issues in a timely fashion (for instance, simply switching to a rapid release cycle is not a silver bullet that would guarantee the quicker delivery of addressed issues).
24
Shebob, Abdulhamid. "Development of a methodology for analysing and quantifying delay factors affecting construction projects in Libya." Thesis, Teesside University, 2012. http://hdl.handle.net/10149/315373.
Full textAbstract:
Construction delays are one of the biggest issues facing the construction industry and affecting delivery in terms of time, budget and the required quality. The characteristics of delay factors and their level of impact vary from project to project, ranging from a few days to years. They have significant financial, environmental and social impacts in construction projects; therefore, it is vital to investigate the causes of delay and analyse their impact. In this context, the research study was initiated to develop a new methodology for analysing and quantifying the impacts of delay factors on construction projects. A comprehensive literature survey was conducted to build up general background knowledge of delay factors in construction projects and particular attention was paid to identifying the potential differences in delay factors between Libya and the UK. A construction industry survey was conducted through a semi-structured questionnaire amongst contractors, consultants and owners. A total of 116 out of 300 responses (38.66%) were received from both countries. Statistical tests including T-test and Wilkinson rank test were executed to analyse the responses and present the findings from the survey. Following the findings from the literature review and an industry survey, a framework of Delay Analysis System (DAS) augmented with simulation model was developed by integrating the importance weight (IW) of each delay factor associated with critical activities using @risk tool. The key function of the system is the flexibility to analyse and quantify the impact in project duration, considering the IW of each delay factor independently. The system was evaluated through two case studies from building projects in Libya using the developed system. The analysis of case study 1 using DAS found that the building project might be delayed by 97 to 103 days when considering the delay factors identified from Libya whereas the project might be delayed by 80 to 85 days when considering the delay factors identified from the UK. The evaluation results from the case study revealed that the impact of delay factors in Libya is higher than in the UK. This confirms that the impact of delay in construction projects is higher in developing countries than in developed ones and varies from project to project in the same country. Finally, it is concluded that the system is a decision-supporting tool that helps to make government departments and decision-makers aware of the significance of delays in construction projects in terms of economic growth and the development processes. The key contribution of this study is the development of a strategy (delay analysis system) for analysing the impact of delay factors in the Libyan construction industry through better investigated, understood and documented reports. The system is expected to help policymakers, decision-makers and others stakeholders within the construction industry to gain a fuller understanding of the industry and to formulate short- and long-term construction strategies and policies that aim to improve the industry’s processes and operations.
25
Escobedo, Maria Jesus. "The impact of infant massage on the development of children with disabilities and children born at-risk for developmental delays." CSUSB ScholarWorks, 2003. https://scholarworks.lib.csusb.edu/etd-project/2290.
Full textAbstract:
This project encompasses program evaluations of infant massage intervention and its impact in the overall development of infants and children born with disabilities or babies born at risk for developmental delays.
26
Eizak, Shiri Farhad. "Planning intentionality and its implications for project planned time." Thesis, University of Manchester, 2015. https://www.research.manchester.ac.uk/portal/en/theses/planning-intentionality-and-its-implications-for-project-planned-time(db4669e5-68be-4426-9bc4-73f71f7361b4).html.
Full textAbstract:
Within the construction industry, proximity of actual to scheduled completion time is a primary performance measure, and deviations from planned schedules remain a popular concern in the field of construction management. Prevailing research assumes that delays arise either from flawed execution of the plan or from failure to plan effectively. Thus, solutions suggested include improving execution and developing ever more sophisticated planning techniques. In spite of these efforts, accuracy in scheduling construction projects has shown little or no improvement, and clients continue to incur the significant costs associated with the failure to more accurately plan. Eschewing this traditional techno-rational view, the current research turned to critical management studies for solutions and investigated planning intentionality, the intentional and unintentional roles planners play in project delays. Thus, it sought to explore the following with respect to the project planner role: optimism bias, where a planner unintentionally mitigates negative information in decision-making; strategic misrepresentation, where a planner intentionally mitigates negative information; and group dynamics in time estimation. The latter is relevant because a team rather than an individual typically embodies the planner function within a construction project. To perform this research, two mixed-methods studies, preceded by a pilot study, and seven interviews with project planners were conducted. The first mixed-methods study investigated how intended and unintended actions of participants affected underestimation of time during task performance; and the second investigated the creation of collective intentionality, the transmutation of individual preferences into a group consensus in time estimation. Results of the first mixed-methods study identified the key situational variables differentiating intended and unintended actions of planners and indicated how these can influence the quality of time estimation. Results of the second study showed that group performance in time estimation was inferior to that of individuals and that group member interaction appeared detrimental to good decision-making. Reasons found were sense of power, commitment, confidence level, cultural diversity, conflicts, and groupthink. The findings were compared and contrasted with those obtained from interviews with project planners to enhance the scope of the study.
27
Flesher, Mary Melissa. "Acetylcholine levels in the prefrontal cortex and hippocampus during trace and delay conditioning." CSUSB ScholarWorks, 2008. https://scholarworks.lib.csusb.edu/etd-project/3370.
Full text
28
Abayneh, Alembo Zinash. "User delay costs and uncertainty in the traffic forecast for road projects." Thesis, KTH, Väg- och banteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-149465.
Full textAbstract:
There are experimental based software packages as well as traffic simulation models that are used for analyzing life cycle cost of road projects. Among those our study was focused on currently available models to analyze the road user delay costs and to identify factors affecting road user delay costs. Sensitivity analyses were performed to identify the important factors that influence the user delay cost. Finally, prediction of future traffic demand as well as user delay cost, using the binomial lattice model, were presented to include the uncertainty of future traffic and user delay costs. The results of this study could help the highway designers with evaluating the future traffic.
29
Ntshangase, Bonga. "Identifying delay factors in electrical distribution projects at Eskom Northern Cape Operating Unit." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/27358.
Full textAbstract:
Delays on electrical engineering projects are a phenomenon at Eskom distribution due to a wide range of causes. These project delays result in Eskom to contravene with Electricity Regulation Act 4 of 2006 in terms of providing efficient, effective and sustainable operation of electricity supply infrastructure, promoting the use of renewable energy sources and energy efficiency as well as to facilitate universal access to electricity for South African consumers (Gazette, 2006). Eskom strives to comply with the Electricity Regulation Act by initiating and implementing strengthening projects, refurbishment (reliability) projects, direct customer projects, infills projects and electrification projects (Eskom, 2014).The severe delays experienced in the delivery of electrical distribution projects have a negative impact on South African economic growth and population. This research study adopted interactive management methodology for the identification of project delay factors in Eskom distribution projects through the use of the idea writing technique, nominal group technique, and interpretive structural modelling technique. The interactive management methodology allows a group of people collaboratively to develop a structure that defines the relationship among the system elements. Using interactive management approach, a total of one hundred and twelve project delay factors were reduced to twenty six significant project delays which formed part of interpretive structural modelling. This research study revealed the hierarchical model illustrating interrelationships between the twenty six identified project delay factors. The research study identified three root causes of delays in electrical distribution projects at Eskom Northern Cape Operating Unit, namely "poor communication", "poor planning", and "project scheduling not properly done". The three identified root causes can be used as critical points for eradicating delays in electrical distribution projects at Eskom Northern Cape Operating Unit. The research study found that a total of ten out of twenty six project delay factors were unique to electrical distribution projects at Eskom Northern Cape Operating Unit.
30
Howick, Susan M. "An exploration of the role of system dynamics in the analysis of disruption and delay for litigation." Thesis, University of Strathclyde, 2001. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=21576.
Full textAbstract:
System Dynamics (SD) is a modelling approach that has been used to support litigation cases that are investigating overruns on large engineering projects caused by Disruption and Delay (D&D). However, the role that SD can play in the analysis of D&D in large projects is not fully understood. The first aim of the research is to explore the appropriateness of SD as a modelling approach in the analysis of D&D for litigation. Criteria on the suitability of SD to model a situation are taken from the SD literature and explored to understand their level of contribution to the research. Experiences from the researcher's involvement in two litigation cases are then used to test how empirical data performs against the criteria. The explorations lead to a revised set of criteria being proposed. These criteria should be used to assess whether or not SD should be used to analyse D&D for any specific litigation case. Testing the data against the criteria also results in lessons for the modelling of D&D. This includes a proposed method of assessing the level of D&D in a project through an analysis of managerial actions. The second aim of the research is to explore the issues that are involved in using SD to analyse D&D for litigation. The approach taken uses the empirical data to test the degree to which SD can meet the purposes of modelling D&D for litigation. This process leads to a number of conclusions. It highlights limitations of using SD in this environment; emphasises the importance that the audience plays in the modelling process; explores the difficulties encountered in gaining audience confidence in the model; provides an appreciation of the validation process required when modelling in this environment. The research provides an initial understanding of the role that SD can play in the analysis of D&D for litigation. It is hoped that this can be built on with future experiences of modelling D&D for litigation.
31
Littlefield, Dennis Howard, and Eric Harley Summers. "Indicators of delay between recommendation for community outpatient treatment and release into a conditional release program." CSUSB ScholarWorks, 1996. https://scholarworks.lib.csusb.edu/etd-project/1184.
Full textAbstract:
The mentally ill who have been found not guilty of a crime by reason of insanity (NGRI), appear to be at risk in several areas when confronted with the judicial system. The purpose of this study is to determine whether the factors which predict recidivism of NGRI patients in Community Out-patient Treatment (COT) also inhibit a patient's release into a conditional release program (CONREP).
32
Asthana, Manisha. "Delay in access of health care in California A project report." Thesis, California State University, Long Beach, 2014. http://pqdtopen.proquest.com/#viewpdf?dispub=1527358.
Full textAbstract:
Delay of health care negatively impacts patient satisfaction and contributes to an inefficient healthcare system by increasing the use of the emergency room for non-urgent conditions. Policymakers argue that long waits will result in delays in diagnosis and treatment, and these delays negatively affect individual health.
California is a diverse state and comprises of people from various ethnic backgrounds. Consequently, there are cultural, linguistic and various other underlying reasons which contribute towards the delay in health care.
Apart from this, California has a wide range of people, which varies in socioeconomic status and there is a large segment which delays health care due to lack of health insurance. This study focuses on analyzing the reasons behind the delay in health care among California residents and proposes remedies which can help mitigate the problem.
33
Cordova, Dorothy Gutierrez. "Effective structuring of the classroom for Spanish-speaking children with delayed oral language development." CSUSB ScholarWorks, 1993. https://scholarworks.lib.csusb.edu/etd-project/632.
Full text
34
Risley, Robert Michael Kevin. "A proposal for using a literature-based functional curricula for primary moderate cognitively delayed learners." CSUSB ScholarWorks, 2000. https://scholarworks.lib.csusb.edu/etd-project/1864.
Full text
35
Colunga, Jeannie Marie. "We have nothing to fear but tropes themselves: Rhetoric in the speeches of Franklin Delano Roosevelt." CSUSB ScholarWorks, 1993. https://scholarworks.lib.csusb.edu/etd-project/701.
Full text
36
Hou, Tianlue. "Modifying organization design and development process to mitigate project delay in microprocessor product development." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42366.
Full textAbstract:
Thesis (S.M.)--Massachusetts Institute of Technology, System Design and Management Program, 2007.Includes bibliographical references (leaf 75).
In today's engineering project management, there is no lack of strategies to plan and assign task items to reduce the overall project timeline. However, as the product gets more complicated and organization gets much larger, the implementation of those strategies becomes the real challenge. Operational issues such as the objectives alignment across teams, transparent and consistent vertical and horizontal communications, and unexpected requirements changes are becoming causative factors for project delay. These issues are seen particularly often in microprocessor product development. Besides its high technology complexity, microprocessor development involves huge uncertainties, frequent changes, closely coupled inter-team efforts, and iterative design processes. The cost of microprocessor project delay is huge, not only because the development process is capital intensive, but also because the demand is technology sensitive-a project delay of several months could keep a product from entering the market and kill the project. As the design process gets more matured in this industry, firms are competing on execution. This thesis argues that a great amount of execution delay comes from organizational barriers, a lack of organizational processes in situations of exception and uncertainty management and the inadequate incentive system that aligns the interests of the project with its team. The author evaluated the effectiveness of the traditional organization structure and other standard structures for this industry, and proposed an innovative hybrid organization structure, a structure that is highly leveraged, robust, scalable and efficient. A thorough comparison of the proposed organization with the traditional ones is conducted with the system tools such as Design Structure Matrix, and System Dynamics models.
by Tianlue Hou.
S.M.
37
Keane, Patrick J. "A computer-aided systematic approach to time delay analysis for extension of time claims on construction projects." Thesis, Loughborough University, 1994. https://dspace.lboro.ac.uk/2134/6758.
Full textAbstract:
A review of existing literature and research findings indicated that whilst the incidence of time extension claims is increasing, Contractors are failing to gather, analyse and present data as evidence to such an extent that there is a high rejection rate of claims made, and a consequent significant dissatisfaction rate amongst Contractors with awards being made. The current difficulties experienced by Contractors in managing information on site locations, combined with the low investment in, and usage of Information Technology, forms a major contribution to the problems arising in the preparation and presentation of time extension claims. This research work identified from empirical evidence, together with construction technical, professional and academic literature, the essential criteria and features of an efficient and effective time delay analysis approach for preparing time extension claims in connection with construction projects. The evidence from these sources led to the formulation of an alternative approach based on an integrated computer-aided systematic technique which relies upon analysis of project-specific performance data. The current practice of time delay analysis as currently executed by Contractors was formulated as a problem whose solution is implemented by the use of the disciplined capture of factual job data, systematic analysis including a computer modelled simulation exercise and logical compilation of results in report format. This allows full cross-checking and source identification of data used in the approach, and resultant computations. The proposed approach employs an improved method of data capture, computer aided delay impact simulation and presentation of results. The proposed approach abbreviated to CoSTAR requires the use of spreadsheet database, word processing and project planning software, all of which are currently industry standard, readily available and consequently do not require to be specifically written. The approach is designed to work on industry standard computing "PC" hardware of a specification suitable to run a full range of business software. The proposed approach (CoSTAR) was tested and validated with performance data from a multi million pound, major fast track building refurbishment project and used Lotus 123 version 2.4, WordPerfect version 5.1, and Pertmaster Advance software. The approach was also subject to separate validation by a panel of experts. The testing process showed the approach to be feasible, and capable of identifying and quantifying the critical delay activities which caused the time overnin to the project's fixed contract period.
38
Ugur, Mehmet Ali. "Modeling the Neutral Atmosphere in Continuously Operating GNSS Networks using OPUS-Projects." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1357277355.
Full text
39
Busco, Michael John. "Utilization of natural supports during leisure/recreational activities by developmentally delayed adult consumers who reside in a group home environment." CSUSB ScholarWorks, 1996. https://scholarworks.lib.csusb.edu/etd-project/1211.
Full text
40
Hassanzadeh, Saïna. "Analysis of the causes of delay in collaborative decision-making under uncertainty in pharmaceutical R and D projects." Thesis, Toulouse, INPT, 2012. http://www.theses.fr/2012INPT0164/document.
Full textAbstract:
Les décisions collaboratives sous incertitude dans les situations non urgentes peuvent être retardées, surtout lorsque la santé humaine et des investissements élevés sont en jeu comme c’est le cas des projets de R and D pharmaceutiques. Cette thèse étudie les causes des retards récurrents dans la prise de décision collaborative sous incertitude et les pratiques efficientes pour réduire ces retards. Pour mieux comprendre le problème des retards dans la prise de décision face à l’incertitude, nous étudions d’abord la notion d’incertitude et proposons une définition de l’incertitude adaptée au management de projet. Ensuite, le processus de prise de décision dans les projets de développement de nouveaux médicaments est modélisé, mettant en évidence le cycle de vie de l’information à partir de sa production jusqu’à sa consommation c’est-à-dire la décision elle-même. Ce modèle comprend une étape de réflexion individuelle et une étape de l’interaction en groupe, en clarifiant comment l’information est traitée différemment par les décideurs. Afin d’analyser les conflits du passé et anticiper ceux du futur, sur la base de ce modèle, un indice est défini pour mesurer le risque d’invalidation d’une décision prise a posteriori. Finalement, à travers des entretiens approfondis, 252 facteurs clés qui influent la prise de décision sont identifiés. Les trois causes de retard les plus citées sont : la peur de l’incertitude, la peur de la hiérarchie et la difficulté des décisions d’arrêt. Sur la base des facteurs identifiés, un recueil de bonnes pratiques est construit pour les acteurs du processus de prise de décision qui aident à former, mûrir, communiquer, digérer, respecter et finalement exécuter les décisions collaborativesCollaborative decisions may be deferred when faced with a high degree of uncertainty, especially when public health and high investments are at stake and in situations that seem non-urgent, as is the case in pharmaceutical R and D projects. This thesis investigates the causes of recurrent delay in collaborative decision-making under uncertainty, and the efficient practices to reduce this delay. To better understand the problem of delay in decision-making under uncertainty, we first review the notion of uncertainty and propose a definition of uncertainty adapted to project management. Then, the decision-making process in drug development projects is modeled, highlighting the information life cycle from its generation to its consumption i.e. the decision itself. It includes individual reflection and group interaction, clarifying how information is processed differently by decision-makers. To analyze past conflicts and anticipate future ones, based on this model, an index is defined that measures the risk of invalidating a decision a posteriori. Finally, through an in-depth interview-based approach, 252 key factors that affect decision-making are pointed out. The three most-mentioned causes of delay are: fear of uncertainty, fear of hierarchy, and difficulty of No Go decisions. Based on the identified factors, a compendium of practices is constructed for the actors of the decision-making process that help collaborative decisions to be formed, matured, digested, respected, and finally executed
41
Xie, Weija. "Planning for sustainability at city scale : Reflections on a delayed project, Dongtan, China." Thesis, KTH, Urbana och regionala studier, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-89628.
Full text
42
Ozdemir, Mustafa. "A Probabilistic Schedule Delay Analysis In Construction Projects By Using Fuzzy Logic Incorporated With Relative Importance Index (rii) Method." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612169/index.pdf.
Full textAbstract:
The aim of this thesis is to propose a decision support tool for contractors before the bidding stage to quantify the probability of schedule delay in construction projects by using fuzzy logic incorporated with relative importance index (RII) method. Eighty three (83) different schedule delay factors were identified through detailed literature review and interview with experts from a leading Turkish construction company, then categorized into nine (9) groups and visualized by utilizing Ishikawa (Fish Bone) Diagrams. The relative importances of schedule delay factors were quantified by relative importance index (RII) method and the ranking of the factors and groups were demonstrated according to their importance level on schedule delay. A schedule delay assessment model was proposed by using Fuzzy Theory in order to determine a realistic time contingency by taking into account of delay factors characterized in construction projects. The assessment model was developed by using Fuzzy Logic Toolbox of the MATLAB Program Software. Proposed methodology was tested in a real case study and probability of schedule delay was evaluated by the assessment model after the required inputs were inserted to software. According to the case study results, the most contributing factors and groups (that need attention) to the probability of schedule delays were discussed. The assessment model results were found to be conceivably acceptable and adequate for the purpose of this thesis.
43
Staflund, Johan, and Rickard Östblom. "Identification of the Critical Delay Factors in the Subway Tunnel Construction in Stockholm : An explanatory Study Investigating the Project Delay and its Consequences on Property Developers." Thesis, KTH, Fastigheter och byggande, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-298227.
Full textAbstract:
Stockholm is one of the fastest growing conurbations in Europe, to accommodate for the increased population and urban growth, the current subway system needs to be extended. Appropriately, a joint initiative regarding housing and infrastructure development was signed in January 2014 by the Swedish government, Stockholm County Council and the afflicted municipalities Stockholm, Solna, Nacka and Järfälla. The joint initiative, the 2013 Stockholm negotiation, presented an extension of the current subway system with a total length of 19,6 km and 11 new stations in Stockholm, Solna, Nacka and Järfälla. Large-scale infrastructure projects often suffer from cost and time overruns. The Stockholm subway construction is no exception and has since the project started collected a delay equivalent of five years for Järfälla and Nacka, and a cost overrun of SEK 9,3 billion. The aim of this thesis is to objectively identify the critical delay factors of the subway tunnel construction in Stockholm and unveil the delay implication on property developers with housing projects in the adjacent areas to the new stations. The thesis will be limited to mainly focus on the extension to Järfälla and Nacka. To investigate the research questions, a systematic integration of quantitative and qualitative data has been collected through literature reviews, 9 interviews with the client, designers, consultants and a survey with 13 property developers. This thesis has identified one critical delay factor, linked to the poor project performance regarding the time overruns. With support from the literature review, interviews and surveys, the observed delay can be described as a consequence of political-economic explanations. The cause for the delay is rooted in the inaccurate estimations and unrealistic expectations presented in the 2013 Stockholm negotiation. Thus, the project delay is to be categorized as non- acceptable, due to a five-year prolonged time plan. Additional delay factors have beenidentified but are not to be viewed as critical. This thesis has also identified a general frustrationamongst the developers in Järfälla and Nacka as they have perceived negative implications as a consequence of the delay of the subway extension.Stockholm är en av de snabbast växande storstadsregionerna i Europa och för att tillgodose den ökade tillväxten behöver regionen utveckla sin infrastruktur och kollektivtrafik. I januari 2014 undertecknades en överenskommelse, avseende utveckling av bostäder och infrastruktur, mellan regeringen, Stockholm Läns Landsting, Stockholm- och Solna stad, Nacka samt Järfälla kommun. Avtalet benämns som 2013 års Stockholmsförhandling och omfattar en utbyggnad om 11 nya tunnelbanestationer i Stockholm, Solna, Nacka och Järfälla, med en total spårlängd om 19,6 km. Stora infrastrukturprojekt har historiskt sett blivit försenade och haft budgetöverskridande projektkostnader. Tunnelbaneutbyggnaden mot Järfälla och Nacka har båda blivit försenade med fem år samt överskridit budgeten med totalt 9,3 miljarder kronor. Syftet med denna masteruppsats är att objektivt identifiera de kritiska faktorer som orsakat förseningen av projektet samt redogöra för de konsekvenser som förseningen har orsakat för de bostadsutvecklare med projekt i områdena där de nya stationerna är planerade. Uppsatsen har avgränsats till att enbart skildra utbyggnaden mot Järfälla och Nacka. För att besvara studiens frågeställningar har kvalitativ och kvantitativ data integrerats genom litteraturstudier, intervjuer med 9 nyckelpersoner inom projektet, samt via en enkätundersökning med 13 fastighetsbolag, verksamma i Järfälla och Nacka. Uppsatsen har identifierat en faktor som ligger till grund för att projektet inte presterat enligt projektets tid- och kostnadsmål. Faktorn har sitt ursprung i de felaktiga och orealistiska beräkningar som presenterades i 2013 års Stockholmsförhandling. Ytterligare förseningsfaktorer har identifierats, men är inte att anses som kritiska eftersom de inte haft en betydande inverkan på projektet och dess färdigställande. Förseningen av projektet är att kategorisera som ej acceptabel med hänsyn till dess uppkomst och omfattning. Mot den bakgrundsdata som samlats in genom litteraturstudier, intervjuer och enkätundersökningar kan förseningen härledas som en konsekvens av politisk-ekonomiska orsakssamband. Uppsatsens resultat visar även på att förseningen orsakat flera negativa konsekvenser för de fastighetsbolag som är verksamma i Järfälla och Nacka, vilket har skapat ett generellt missnöje gentemot projektets beställarorganisation.
44
Filippi, Giancarlo Azevedo De. "Método para planejamento da produção e gestão de prazos de empreendimentos imobiliários." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/3/3146/tde-18072017-110219/.
Full textAbstract:
Os atrasos de obra têm se tornado comuns na indústria da construção, afetando o desempenho dos empreendimentos e causando prejuízos consideráveis para todos os envolvidos. Este trabalho analisa as principais causas de atraso em projetos de construção e propõe um método estruturado que auxilie o uso efetivo de ferramentas de planejamento físico, bem como boas práticas e instrumentos de controle de prazo. Inicialmente, realizou-se uma ampla revisão bibliográfica sobre o tema. Em seguida, uma pesquisa de campo em 50 obras relacionadas a empreendimentos imobiliários (construídos em um período de cerca de nove anos) para se identificar os principais fatores que influenciaram seus atrasos. Com base neste estudo inicial, propôs-se um primeiro referencial estruturado de práticas de planejamento e gestão de prazos que evitem a ocorrência dos vários problemas ou causas de atrasos levantados na pesquisa anterior. Estudou-se a viabilidade destas práticas através de uma segunda pesquisa de campo detalhada, em outras 8 obras mais recentes de mesma tipologia. Além disso, buscou-se uma validação das práticas por profissionais que atuam nos processos de planejamento de construtoras. Finalmente os resultados de todas estas análises são utilizados para refinar e consolidar um método que evite a ocorrência de atrasos e que apoie uma boa gestão de prazos de obra em projetos imobiliários.Delays are common in the construction industry. They create many concerns for project performance and cause considerable losses to project parties. This research analyze the main causes of delay in construction projects, and it propose a structured method to improve the current use of time planning tools and control instruments. Initially, a literature review and a field survey with 50 real estate construction projects in Brazilian cities (built in a period of nine years) are conducted to identify the main factors influencing the delays. Next, tools and assumptions to improve the control of project deadlines are identified, thus avoiding the occurrence of various problems raised in the previous survey. This study also proposes a time management framework that consolidates these practices and tools studied. The viability of the practices is measured in other recent projects, by a second field survey in 8 recent construction projects. In addition, validation of the practices by professionals who work in planning processes in construction companies was done. Finally, the results of all these analyses are used to consolidate a method to avoid delay occurrence and to support good time management in real estate projects.
45
Farnós, Amorós Esther. "Ruptura del projecte parental i disposició dels preembrions." Doctoral thesis, Universitat Pompeu Fabra, 2010. http://hdl.handle.net/10803/7323.
Full textAbstract:
La tesi doctoral "Ruptura del projecte parental i disposició dels preembrions" analitza els efectes del consentiment a les tècniques de reproducció assistida prestat en el marc d'un projecte parental. La tesi ofereix una resposta als conflictes que enfronten exesposos o exconvivents en relació al destí dels preembrions sobrants d'un cicle de fecundació "in vitro" iniciat durant la relació. Aquests conflictes constitueixen un grup de casos al voltant del qual no hi ha solucions legislatives que permetin als tribunals integrar el buit normatiu existent, o les que hi ha són incompletes, com posa de relleu a Espanya la Ley 14/2006, de 26 de mayo, sobre técnicas de reproducción humana asistida. En els països del nostre entorn, el manteniment de les taxes de divorci en nivells elevats, unit a l'augment que any rere any experimenta el nombre de preembrions crioconservats, fan necessària una resposta jurídica per a aquests conflictes.The PhD thesis "Parental's project break-up and pre-embryo disposition" analyses the effects of consent to assisted reproductive technologies (ART) granted in the scope of a parental project. The thesis offers an answer to conflicts between exespouses or ex-partners regarding the destiny of spare preembryos resulting from an "in vitro" fecundation cycle commenced during the relationship. These conflicts conform a group of cases with no legal solutions that allow the courts to fill the existing legal gap, or existing solutions are incomplete, as in Spain proves the Act 14/2006, May 26th, on ART. Maintenance of divorce rates at high levels in our closer countries, as well as the increase of spare frozen pre-embryos per year, calls for a legal answer to these conflicts.
46
Patterson, Sean. "Get Flanagan: The Rise and Fall of the Federal Theatre Project." ScholarWorks@UNO, 2004. http://scholarworks.uno.edu/td/183.
Full textAbstract:
This thesis is an attempt to render theatrically the establishment and eventual dissolution of the Federal Theatre Project, from the point of view of its appointed director Hallie Flanagan. Drawn from a variety of historical sources, including subjective first-person accounts and objective transcripts of congressional investigation testimony, the play approximates the structure of the Living Newspaper, a style of presentation adopted by the Federal Theatre Project. This thesis also includes an appendix, which details my playwriting process for this particular play, from initial concept through to production.
47
Öhman, Sandberg Ann. "Hållbar programutveckling : en studie av betydelsen av expansivt lärande och delvis delade objekt." Doctoral thesis, Högskolan för lärande och kommunikation, Högskolan i Jönköping, HLK, Livslångt lärande/Encell, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-23755.
Full textAbstract:
This thesis aims to develop meanings of sustainable programme development. Policies are often introduced to solve societal problems identified by a government agency or some other organization. In order to realize the intentions behind the policy it is common that one or several policy driven projects are funded with large sums of money. By funding policy driven projects, the funding organizations expect that the projects can support a sustainable change of practice that can solve or at least decrease the societal problem. Research shows that policy driven projects and programmes often fail to realize the intentions behind poli-cies. Hence, it is uncertain to what extent policy driven projects contribute to a sustainable change of practice.
48
Alsaqqa, Obada. "Fuzzy Time-Delay Model in Fault-Tree Analysis for Critical Path Method." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1429772426.
Full text
49
Bonat, Ida, and Emelie Mellåker. "Delaktighet och förtroende i partneringprojekt : – En fallstudie som belyser underentreprenörernas roll." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-30201.
Full textAbstract:
Problem: What role do sub-contractors have in a partnering project? Purpose: The purpose of the case study is to describe, explain and understand the sub-contractor’s role in a partnering project. The study will complement existing partnering research that is one-dimensional. Method: The study had an abductive approach and was based on a literature study, which collected secondary data and created the theoretical framework, and a qualitative case study, where semi-structured interviews collected primary data and created the empirical chapter. The empirical study is based on interviews with six respondents, all participants in the same project, three sub-contractors, one main contractor and one project manager. To ensure that the empirical study answered the issue and is relevant in relation to the theoretical framework, an operationalization scheme was used in the development of the interview guide. The interviews were transcribed, commented, categorized and coded. The empirical study was built around the themes presented in the theoretical framework. The analysis was done by systematically testing the empirical material against the theories. The study has limited generalization possibilities since it only highlights one project but the study is not meant for generalization. Conclusion: The case study complements existing knowledge through the factors participation and trust where the sub-contractors role is explained, described and understood in the Swedish construction industry. Organisations and individuals who want to understand the role of the sub-contractor in a partnering project can use the case study. It can also be used in a more general meaning to raise knowledge about partnering. The study shows that formal means are not as crucial as earlier research states; instead the informal means are the important ones.Frågeställning: Vilken roll har underentreprenörerna i ett partneringprojekt? Metod: Studien genomfördes med en abduktiv ansats och baseras på en litteraturstudie, som samlade in sekundärdata och skapade den teoretiska referensramen, och en kvalitativ fallstudie, där semistrukturerade intervjuer genomfördes som samlade in primärdata och ligger till grund för empiri-kapitlet. Den empiriska studien baseras på ett urval av sex respondenter, alla aktörer i samma projekt, tre underentreprenörer, en huvudentreprenör och en projektledare. För att säkerställa att den empiriska studien besvarade frågeställningen och var relevant i förhållande till litteraturstudien gjordes ett operationaliseringsschema som användes vid utvecklandet av intervjuguiden. Intervjuerna transkriberades, kommenterades, kategoriserades och kodades. Empirin byggdes upp kring de teman som presenterades i den teoretiska referensramen. Analysarbetet skedde genom att systematiskt testa empiri mot teori. Studien har begränsade generaliseringsmöjligheter eftersom den endast utgår ifrån ett projekt. Den är dock inte menad att användas för att generalisera. Slutsats: Studien kompletterar befintlig kunskap genom faktorerna delaktighet och förtroende som beskriver, förklarar och förstår underentreprenörers roll i den svenska byggindustrin. Studien kan användas av organisationer och individer som vill förstå underentreprenörens roll i ett partneringprojekt. Den kan också användas för att få en mer generell förståelse för partnering. Studien visar att formella medel inte är lika avgörande som tidigare forskning menar utan det är de informella medlen som har betydelse.
50
Silva, Alexandre Marcelo Fernandes da. "Obtenção de conjuntos estabilizantes de controladores PID para sistemas com atraso utilizando o teorema de Hermite-Biehler." Universidade de São Paulo, 2008. http://www.teses.usp.br/teses/disponiveis/18/18153/tde-15102008-133518/.
Full textAbstract:
Os controladores PID são largamente utilizados em processos industriais. Recentemente, novos resultados de projeto de controladores PID foram obtidos para sistemas lineares invariantes no tempo sem atraso. Entretanto, o comportamento de diversas plantas industriais pode ser descrito matematicamente por sistemas lineares invariantes no tempo com atraso. O problema de estabilidade de sistemas lineares invariantes no tempo com atraso envolve encontrar a locação de raízes de funções transcedentais. Neste trabalho, o teorema de Hermite-Biehler é usado para estabelecer resultados para o projeto de controladores PID para uma classe de sistemas lineares com atraso. Usando a propriedade de entrelaçamento em altas freqüências da classe estudada e programação linear obtém-se o conjunto de todos os controladores PID. Até onde se sabe resultados anteriores de síntese de controladores PID envolvem a solução de equações transcendentais.The PID controller is widely used in industrial processes. Recently, new results on the design of PID controllers for invariant time linear systems without time delays have appeared. However, the dynamic behavior of many industrial plants may be mathematically described by linear time invariant systems with time delays. The problem of stability of linear time invariant systems with time delays involves finding the location of roots of transcendental functions. In this work, the Hermite-Biehler theorem is used to establish results on the design of proportional plus integral plus derivative (PID) controllers for a class of time delay systems. Using the property of interlacing at high frequencies of the class of systems considered and linear programming we obtain the set of all stabilizing PID controllers. As far as we know, previous results on the synthesis of PID controllers rely on the solution of transcendental equations.