• Journal of Construction Engineering and Project Management
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• v.10 no.1
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• pp.16-32
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• 2020

Cost and time control of projects is important in preventing project failure. However, achieving effective cost and time control in practice is often challenging. The challenges of project cost and time control in practice are investigated by carrying out a questionnaire survey on the top 150 construction contractors in the UK followed by in-depth semi-structured interviews of practitioners from 15 construction companies in the country. Quantitative analysis reveals that design change is the most important factor inhibiting the ability of UK contractors from effectively controlling both the cost and time of construction projects. Four of the top five factors inhibiting effective cost control are also the top factors inhibiting effective time control albeit in a different order. These top factors-design changes, inaccurate evaluation of project time/duration, risk and uncertainty, non-performance of subcontractors and nominated suppliers were also found to be endogenous factors to the project. Additionally, qualitative analysis of the interviews reveals 16 key challenges to prevent for effective project cost and time control in practice. These are classified into four categorised based on where they stem from as follows; from the organisation (1. Lack of integration of cost and time during project control, 2. lack of management buy-in, 3. complicated project control systems and processes, 4. lack of a project control training regime); from the construction management/project management approach (5. Lapses in integration of interfaces, 6. project control not being implemented from the early stages of a project, 7. inefficient utilisation and control of labour, 8. limited time devoted to planning how a project will be controlled at the outset); from the client; (9. Excessive authorisation gates, 10. use of adversarial and non-collaborative forms of contracts, 11. communication problems within client set-up, 12. obstructive client representatives) and; from the project team (13. Lack of detailed/complete design, 14. lack of trust among the project partners, 15. limited time devoted to project control on site, 16. non-factual reporting). The study posits that knowledge of these project control inhibiting factors and challenges is the first step at ensuring they are avoided and enable the implementation of a more effective project cost and time control process in practice.

• Asian-Australasian Journal of Animal Sciences
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• v.23 no.2
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• pp.240-245
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• 2010

The effects of controlled energy restriction and duration of pre-incubation egg holding on fertility, hatchability and hatch losses were evaluated in aged broiler breeders (64 wk). The energy (ME) required for maintenance, activity, growth and anticipated egg production was calculated and offered to a control group (283-471 kcal/kg) from 21-64 weeks of age. In three other groups, ME was quantitatively reduced either by 20% (SER; severe energy restriction) or 10% (MER; moderate energy restriction) and increased by10% (EEF; excess energy feeding) over the control group (CER; controlled energy restriction). Each diet was offered to 130 pullets in individual cages, and the quantity of ME increased with age. At the end of 64 weeks, fertile eggs were collected from each dietary group for 11 consecutive days and grouped under 4 holding periods based on the length of storage (2, 5, 8 or 11 d). The influence of energy regimes, egg holding intervals and their interaction was evaluated on fertility, hatch losses and hatchability. Broiler breeders maintained on SER regime (231-419 kcal/d) produced maximum number of eggs (993) followed by MER (819), CER (624) and EEF (438) during the 11-day period. The percent fertility and hatchability was significantly (p$\leq$0.05) higher in SER and MER groups compared to CER and EEF. However, energy regimes did not influence the loss in egg weight during pre-incubation storage, shell weight, shell thickness or hatch losses as dead germs and dead in shell. The improvement in hatchability in SER and MER groups appeared to be closely related to higher fertility and lower embryonic mortality. Holding of eggs for 11 days showed a linear loss in egg weight with the length of storage, but did not influence the fertility and hatch losses. The percent hatchability on eggs set was maximum when storage period was restricted to 5 days. The interaction between energy regimes and egg holding periods exhibited better hatchability results with SER regime when eggs were held for 5 days. Response to MER was not different from SER. It was obvious that energy restriction during production period had a positive influence on egg number, fertility and hatchability in aged breeders. At 64 weeks of age, holding of fertile eggs for 5 days prior to incubation was adequate for optimum hatchability in breeders.

• The Journal of the Korea Contents Association
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• v.11 no.2
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• pp.276-286
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• 2011

Recently, many regional governments and national organizations have propelled public art projects as a part of city regeneration project for improvement of living environment and cultural welfare of neglected regions. It is necessary to think of meaning of the public art project in a context of city regeneration, not only in public art discourse. This paper starts from the question if recent public art projects performed in city of Busan during last 5 year was successful in terms of place marketing. This paper tried to revoke to consider public art project in terms of place marketing because it should be utilized ultimately to activate regional economy for the habitants. First, we reviewed theoretical background regarding definition of public art and place marketing, intended effects of public art project, and place marketing strategy. we elicited an analytical framework and analyzed representative 6 cases of recent public art projects performed in city of Busan in terms of requirements of public art project and viability of place marketing. Discussion of the analysis result suggested implications for the future public art project to direct.

• The KIPS Transactions:PartD
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• v.11D no.7 s.96
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• pp.1491-1498
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• 2004

Successful project planning relics on a good estimation of the manpower required to complete a project, together with the schedule options that may be available. Despite the extensive research done developing new and better models, existing software manpower estimation models are present only the total manpower or instantaneous manpower distribution according to the testing time for the software life-cycle. This paper suggests the manpower estimating models for software testing phase as well as testing process and debugging process in accordance with de-tected faults. This paper presents the polynomial model for effort based on testing and debugging faults. These models are verified by 5 different software project data sets with coefficient of determination and mean magnitude of relative error for adaptability of model.

• Journal of the Korean Society of Propulsion Engineers
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• v.21 no.2
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• pp.72-82
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• 2017

Nozzleless booster is one of the applicable components for integral rocket ramjet (IRR). In order to predict nozzleless solid booster performance, the simplified theoretical analysis was applied for L/D=5, 6, 7, 9, 11, and 13. Al-HTPB and Zr-HTPB propellant with a high metal content were used to increase the hardness because of the combustion gas flow effect. It was found that the trends between the simplified theoretical analysis and experiments were similar.

• Korean Journal of Construction Engineering and Management
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• v.19 no.4
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• pp.82-92
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• 2018

Considering that earlier stage of construction project has a great influence on the possibility of lowering of environmental load, it is important to build and utilize system that can support effective decision making at the initial stage of the project. In this study, we constructed an environmental load estimation model that can be used at the early stage of the project using basic design factors. The model was constructed by using the artificial neural network to estimate environmental load by applying to planning stage (ANN-1), basic design stage (ANN-2). The result of test, shows that average of absolute measuring efficiency and standard deviation of ANN-1 and ANN-2 were 11.19% / 5.30% and 9.59% / 3.09% each. This result indicates that the model using the input variables extended with the project progress has high reliability and it is considered to be effective in decision support at the initial design stage of the project.

• International Journal of Computer Science & Network Security
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• v.21 no.5
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• pp.57-68
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• 2021

Successfully adapting to digital and customer-oriented transformation, the concept of lean manufacturing professes the philosophy of creating greater benefit while minimizing losses. These losses are operations that do not add value in the production process to ensure the efficiency, flexibility, and profitability of projects. In the context of broad automation and digitalization of all sectors of the economy, mechanisms for combining automation technologies and lean production are becoming available. Moreover, when it comes to the efficient use of financial, human, or material resources, it is clear that the use of Industry 4.0 technologies can be an effective tool for achieving the goals of lean production, as many of them pursue the same goal. In this context, this article aims to study the effectiveness of the implementation of project management concepts at the global level and identify the main factors influencing its effectiveness to ensure the achievement of lean production through LEAN technologies and Industry 4.0 technologies. To achieve this goal, several statistical indicators were selected and several statistical methods of analysis were used: pairwise correlation, regression analysis, methods of comparison, synthesis, and generalization. Statistical analysis was conducted according to a survey conducted by the Project Management Institute (PMI) in 2020. An economic-mathematical model of dependence of project effectiveness in different regions of the world on the level of implementation of project management approaches is built, which shows that the increase in project effectiveness by 85% is due to financial losses, technical training, and consumer orientation. These results allow project managers to develop appropriate strategies to improve project management approaches at all levels. It is established that LEAN technologies and technologies of Industry 4.0 have several tools that have a positive effect on minimizing losses following the concept of lean production. Besides, given that the technology of Industry 4.0 is focused on the automation of Lean Production technology, a mechanism for the introduction of lean production using these technologies and methods.

• The Journal of the Korea Contents Association
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• v.16 no.11
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• pp.510-524
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• 2016

The 4-part series of , the 6-part series of , the 7 part-series of , and the 6-part series of differ in terms of their themes, although each one of them focuses on Asia. By winning prominent prizes around the world, these documentaries produced by the 'Insight Asia' Project Team of the Korea Broadcasting System (KBS) were affirmed of their competence in producing quality material. The purpose of Insight Asia Project was to improve the quality of KBS documentaries, and to make them competitive in the world market, Europe in particular. The specific goal 'Insight Asia' Team set for itself was to produce, in 5 years' time, documentaries of equal caliber to the (pre-Murdoch) National Geographic and the BBC. Unfortunately, the "Korean Wave," which was once active in the drama genre, was in stagnation at the time the team was being launched. As a result, KBS shifted refocused on documentaries as its driving force and provided detailed minute plans of action. However, the 'Insight Asia' Project was suspended abruptly in its fourth year, after a change in management in the network, and a discussion or evaluation on 'Insight Asia' Project never occurred. This study's objective is to retrace how the project 'Insight Asia' had been developed, and to clarify its meaning with respect to the KBS's globalization project. For this study, producers who participated in the project were interviewed.

• The Journal of Korean Medicine
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• v.40 no.3
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• pp.76-86
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• 2019

Objectives: This study aims to assess the Gyenggi-do support project of Korean medical treatment in subfertility in 2018. And we would like to propose a plan to improve the project by analyzing the results of the project. Methods: We got the medical records of 260 participants that personal information was deleted by the association of Korean Medicine in Gyenggi-do. We collected the participants' characteristics, treatment records, results of treatment, laboratory results and satisfaction survey results. We coded the data and analyzed them using SPSS 23 at 5% significance level. Results: After the treatment, 11.0% of participants became pregnant spontaneously. There was no significant change in blood test before and after the treatment and observation period, and there was no adverse event during the project. After the project, the satisfaction survey was conducted. 84.2% of participants answered that they were satisfied with the result of the treatment. Conclusions: We analyzed the results of Gyenggi-do support project of Korean medical treatment for infertile women in 2017 and 2018. This study suggests the effectiveness and safety of Korean medical treatment for infertile women.

• Korean Journal of Construction Engineering and Management
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• v.11 no.5
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• pp.3-14
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• 2010

This study investigated and analyzed feasibility analysis case studies, carried out by contractor of EPC LSTK projects in the planning stage to suggest the strategies to solve problems for project improvement. For this, five feasibility analysis case studies of gulf cooperation council (GCC) countries were reviewed and investigated. The results can be summarized as follows: 1) Those factors needed to be analyzed, including cost increase, project delay, quality decrease were insufficiently considered when assessing feasibility. 2) And improvement strategies for three problems mentioned above were suggested based on findings in feasibility analysis. 3) Lastly the process of the project feasibility analysis that can be applied to overseas plant construction project was suggested step by step.