Flood events around the world result in the loss of human lives, disruption, damage to economic, infrastructural and ecological systems. Although, different frameworks to manage flood events exist; however, the complexity (i.e. adjustment and adaptation) associated with some of these approaches is often limited by constraints of time and resources. Therefore, this study attempts to apply a flexible project structure to schedule a post-flood recovery project (PFRP). Twenty-five (25) restorative activities in a PFRP were identified, categorised and scheduled as resource-constrained project scheduling problem with a flexible structure (RCPSP-FS). Monte Carlo simulation was used to reflect the uncertain characteristics of each restorative activity. PFRP completion time was 42 and 86 days under time and resource constraints assumptions, respectively. Thirty- four (34) network paths (sub-projects) were identified and grouped into 4 restorative measures as follows: (i) removal of hazardous materials (ii) evacuation of injured persons (iii) provision of flood technology warning system and technical facilities and (iv) construction of shelter, homes and bridges. Time and cost flexibility values for the network paths range from 6 to 63 days, and 14.79 to 288.77 thousand USD, respectively. Time and schedule sensitivity analysis revealed the impact of each restorative activity on simulated project completion time. Based on these results, it is concluded that a flexible project structure can respond to changing circumstances during post-flood restoration efforts which allow more degree of freedom in activity scheduling, flood events measures and cost alternatives.
1 Introduction Cost-effective time scheduling is widely recognized as an important topic in management of construction projects. Namely, execution of projectactivities needs engagement of certain resources and direct costs. Especially, the amount of working time consumed by labour and machines represents an influential indicator that requires to be considered in preparation of construction schedules ( Petlíková and Jarský 2017 ). Acceleration of projectactivities from their normal execution modes often demands additional resources, and the related direct costs
, increasingly dominated by technological and organizational innovations, growing competition, employee turnover, and so on ( Bombiak, 2017 ). This means that unforeseen events, called disruptions, can occur during the implementation of projects ( Bocewicz, et al., 2016 ; Ingels and Maenhout, 2019 ; Klimek and Łebkowski, 2011 ), leading to non-completion of projectactivities or, at best, a delay in carrying them out. As a consequence, in most cases, staffing decisions regarding the appointment of project teams are subject to uncertainty related to the temporary
The paper presents good practices and selected problems of creating cooperation networks. The basics of creating and disseminating new forms of cooperation between enterprises and universities have been described. Based on the implemented international project “3DCentral - Catalyzing Smart Engineering and Rapid Prototyping”, selected conclusions from creating network and management of many project activities including innovative technologies are presented.
The paper is devoted to the assessment problems of the ecological costs management of the production in the project activity. The authors study the conditions of preparation and implementation of investment projects to eliminate accumulated environmental damage in the context of “green” economy. The technogenic deposits’ use approaches are considered for the purpose of the production costs optimization. The paper explains the necessity of building the fund liquidation (a fund for future generations) in the depletion of resource base of the enterprise. The proposed mechanism for the management of environmental costs in project activities can be used at the enterprises of Russia and Mongolia. For example, the Mongolian-Russian mining company “Erdenet” in Mongolia shows the direction to reduce costs and production costs through the implementation of measures for resource and energy efficiency, involving economic circulation of off-balance ores and tailings.
The methodology describes the principle of setting a project in PRINCE2 project management. The main aim of the paper is to implement PRINCE2 methodology to be used in an enterprise in the service industry. A partial aim is to choose a supplier of the project among new travel guides. The result of the project activity is a sight-seeing tour/service more attractive for customers in the tourism industry and a possible choice of new job opportunities. The added value of the article is the description of applying the principles, processes and topics of PRINCE2 project management so that they might be used in the field.
Leadership and Corporate Social Responsibility (CSR) are some of the most widely studied topics, generating an extensive literature. Nowadays, leaders are facing economic, social and environmental challenges. Unfortunately, today trust in business is low. In this complex global environment of uncertainty and ambiguity, leaders have to anticipate the changes and to be catalysts for shifting their organizations towards a sustainable society. The purpose of the present paper is to investigate leaders’ opinion regarding: Corporate responsibilities (Carroll’s’ four-layered pyramid model); Reasons for CSR actions/ projects; Areas of interest for CSR projects/ activities/ initiatives. Taking into account the growing interest towards a sustainable society is a need for a new type of leadership that promotes the CSR’s ideals.
This paper presents the cost optimal project scheduling. The optimization was performed by the nonlinear programming approach, NLP. The nonlinear total project cost objective function is subjected to the rigorous system of the activity precedence relationship constraints, the activity duration constraints and the project duration constraints. The set of activity precedence relationship constraints was defined to comprise Finish-to-Start, Start-to-Start, Start-to-Finish and Finish-to-Finish precedence relationships between activities. The activity duration constraints determine relationships between minimum, maximum and possible duration of the project activities. The project duration constraints define the maximum feasible project duration. A numerical example is presented at the end of the paper in order to present the applicability of the proposed approach.
This work is devoted to promoting the principle of characterization, treated as a systemic paradigm binding in an integral whole the functional and structural aspects of any organization, under-stood as a deliberate relationship of related resources. The principle of characterization and the specific characterization theories built on its basis belong to the methodology of systemic research. Its essence is the axioms contained in model Ψa of the proper functioning, which are assigned to the relationships contained in model Ψb of the structure of this organization. The functional-structural paradigm considered is characteristic primarily of project activity in which an efficient structural response to a certain problem of the correct (safe) functioning of the organization as a whole or its considered part is sought after.
Conservation of European ground squirrel (Spermophilus citellus) has been supported by the LIFE - Nature project “Conservation of Falco cherrug in NE Bulgaria, Hungary, Romania and Slovakia” during the period 201 0-201 4. The project activities were usually focused on EGS reintroduction programmmes with the aim of ensuring the food base for selected species of birds in areas where EGS were the primary historical prey and have become extinct. Reintroduction programmes were carried out at two sites in Slovakia: Piesocná (Moravský Svätý Ján) and Pod Okrúhlou skalou (Tisovec). Together 1 74 individuals were released at Pod Okrúhlou skalou and 284 individuals at the Piesocná target site. Monitoring of both repatriated colonies focused on the natality and distribution area. At both target sites successful hibernation and reproduction have been confirmed. The repatriation date was strongly influenced by weather conditions, especially during the rainy season. It was necessary to cut the grass several times per season, in order to ensure appropriate conditions for individuals’ survival. It was also necessary to protect the individuals against predators. House cats tend to hunt squirrels, which can be considered as the most serious threat at the Piesocná site. Squirrels at the Pod Okrúhlou skalou site were overly attacked by foxes. Intensive care (especially appropriate management of sites and additional feeding) ensured good stability of colonies, their survival and increase