Dynamic model: The influence of project management competencies, resources and capabilities towards the performance of small-medium qualification contractor in Indonesia

The previous researchers have proven that there is a positive and significant influence between the project management competency and corporation’s resource or capability towards the performance using the static model. The purpose of this research is to develop the model and to simulate the relationship among project management competency, resource and capability, and the performance of small-medium qualification contractor in Indonesia using the dynamic model. There are four steps used in this research, developing the conceptual model, collecting the data through questionnaire and interview, developing the causal pie chart, developing the flow chart, simulating and analyzing the developing result. The research result shows that, through the development of dynamic model, the project management competency and corporation’s resource and capability in particular time frame can influence the performance of small-medium qualification contractor significantly.

Project Management Body of Knowledge (PMBOK 5th ) [11] is one of the international standardizations in project managing that was made by Project Management Institute (PMI).According to PMBOK 5th (2012), project management is the application of knowledge, skills, tools and techniques in project activities to fulfill the project needs (PMBOK 5th , 2012), including the document which describes the norms, methods, process and implementation as the important element from project management professional scope.PMBOK purposes to identify the good work and to determine the general steps in project managing (Rehacek, 2014) [12].PMBOK standard is identical with standard project management competency in relevant with the implementation of knowledge, skills, tools and techniques that are needed to hand other projects (Wibowo, 2011) [13], it begins with planning, implementing, controlling and coordinating during the project implementation, to keep the project's duration, quality and cost appropriate with the previous plan (Ervianto, 2007;Husen, 2009) [5] [14].The scope of project management (PMBOK 5th , 2008) is one of the documents which explains some knowledge in the area of project management.There are 9 knowledge area in project management, those are scope management, time management, cost management, human resource management, risk management, communication management, quality management, supplying management and project integration management.Some supporting arguments in the knowledge area based on the contractor competency are Isik et al.( 2010) [10], explaining that project management competency is a part of contractor's resource and capability.The strong and supported project management competency will support the quality of strategic decision in contractor corporation (Dietrich & Lehtonen 2005 ;Asmarani, 2006 ;Arrto et al., 2007) [15] [16] [17] and it will develop the corporation performance (Absah, 2008 ;Huda, 2009 ;Isik et al., 2010;Ardiana et al., 2011) [18] [19] [10] [20].
The contractors' success in developing the performance is very relevant with the capability and resource.The resource and capability might include the tangible assets and intangible assets (Pearce & Robinson, 2003dan Cheah & Miller, 2004) [21] [22].The contractor corporations, especially in small-medium qualification, have limited tangible assets because of this characteristic, including the project maximum limit which is allowed to be done (Permen PU Nomor 08/PRT/M/2011; LPJKN, 2008) [23].Particularly, the resources limitations in small-medium constructors are about the human resources' number and quality, constructions equipment, technology capability, good financial capability and accessibility, thus they need a very well cooperation or collaboration with a big constructor (Abduh, 2008) [6].Based on the Construction Service Development Board (LPJKN) data, the certificated professional workers in constructional sectors are 48.761people or 7,17% from the total amount, meanwhile the certificated and skilled workers are 109.723people or 5,38% from the total amount of skilled workers (Dardak, 2014) [24].
Nowadays, contractor corporations are still facing the condition where the qualified human resources are limited.The number of certificated workers who work in contractor corporation are 996.897certifications, with 17.822 professional certifications and 439.075 skilled certifications.Those numbers only reach 22% of the total workers in constructions which are 6,3 million workers.According to the statistic calculating in LPJKN (2014) [2], it has been known that there are some professional worker qualifications, (5%) beginners, (69%) youth, (24%) medium, and (2%) prominence.These show that the lack of professional composition based on the professional qualification hierarchy.Meanwhile, the skilled compositions are level I qualification (40%), level II qualification (36%), level III (10%) and professional-skilled (15%).Many profession associations which are lack of competence and inappropriate with the procedure give the professional and skilled certificate for their members.It can be seen from the explanation above that, in fact, the resources and capability of small-medium constructors especially about human resources are still low, whether the quality or quantity.Yet, in Sudarto's opinion (2007) [7], the corporations' resources can improve the corporations' performance.A corporation must have particular resources to gain the highest performance achievement (Absah, 2008) [18].
A number of constructor with the small-medium qualification in Indonesia are so many, they spread all over this country and their existences are rather strategic in gaining the national workers in order to make Masterplan for Acceleration and Expansion of Indonesia's Economic Development (MP3EI), thus, the smallmedium constructors need to gain the attention from others.This research develops the static model which has been done before by ; Isik et al., 2010;Ardiana, 2011;Wibowo, 2011;Huda &Wibowo, 2013) [10] [20] [25] by using dynamic model, to analyze the influence of project management construction and resources/capability in corporation towards the workers' performance in Indonesia.The used dynamic model, hopefully, more beneficial for the contractors while they are making the policy to evaluate their performance, especially the capability of project management competency and resources.

II. RESEARCH MODEL A. Conceptual model
Some theories and previous studies are becoming the basic of this research conceptual model, those are Absah (2008) [18], Isiket al. (2010) [10] dan Huda & Wibowo (2013) [25].The research of Absah (2008) [18] showed that, the competence of corporation gives a strong influence to the performance and competitiveness, also the performance comes from particular resources and competence.Meanwhile, the research from Isiket al., (2010) [10] dan Huda & Wibowo (2013) [25] concludes that (a) project management competence has a big deal in corporations' resources and capability, (b) project management competence has a significant influence towards corporation's performance, (c) Resource and performance have a significant influence towards the corporation's performance.Based on the former researches, the conceptual model has been drawn as in Figure 1.This conceptual model has 3 variables, two of them are exogenous variables, including Project Management Competency (PMC) and Performance (P).The rest is endogenous variable, Resources and Capabilities (RC).Conceptual model from relationship of PMC-RC-P can be seen in Figure 1.

B. Stock flow diagram for PMC-RC-P model
Stock flow diagram served in the following is based on the causal loop diagram in the previous part.A variable from causal loop diagram is transferred in the stock form, along with the appropriate connection.The variables are chosen according to the relevancy in the stock flow system, and their potency which is influent towards the performance.Figure 2 shows the project management competency (PMC), resources or capability (RC) and performance (P).   .The result from this simulation can be explained in three sub-system, they are project management competency, resources/capabilities and performance.Based on the result of simulation model with scenario, it shows that the score of PMC in the early year (0 year) is 0,725 (72,5%) increasing to 0,797 (79,7%) in the tenth year (10 th year).The increasing score of PMC influences the performance score (Y3), thus the performance (P) score is also increasing in the early time of simulation year (0 year) for 0,76 (76%) becoming 0,822 (82.2%) in the 10 th year (figure 4).In the other hands, PMC score influences the resources and capabilities score as well.The improvement of PMC score is followed by RC score too, so the RC score in the early simulation time (0 year) is 0,768 (76.8 %) increasing to 0,846 (84.6 %) in the 10 th year (figure 5).Those results show that PMC gives an influence positively and significantly towards the RC and corporations' performance.To improve the project management competency of small-medium contractors in Indonesia, it needs a training and professional competency certification.A training and professional certification of project management competency is very possible to do by the contractor through structural training that is organized by Construction Service Development Board (LPJK).According to corporations' qualifications and classified working area, the small-medium contractors in Indonesia have their own different characteristics.Yet, the policy in order to develop the project management competency for small-medium contractors in Indonesia might use the model in this research, with training and competency certifying.The PMC-RC-P model in this research shows that the project management competency is the most important aspect for small-medium contractors in Indonesia, because the project management competency can give an influence towards RC (Isik et al., 2010), strategy and performance improvement in contractor corporations (figure 4 and 5).The result of simulation model shows that the small corporations, generally, have a project management competency in a low/medium level, low level in quality management, claim management, and risk management.Meanwhile, the medium corporations, generally, have a good project management competency, very well in time management, quality management, risk management and communication management (Huda & Wibowo, 2013).
It needs more attention and notice from all sides to develop the project management competency of smallmedium contractors in Indonesia through the relevant curriculum of higher education, professional competence certification in the project management area and the training from profession/corporation associations.Indonesia should need the standard form of project management competency nationally, and for preparing the competition in project managerial construction competency in the near future.University and Academician shall do the acceptable curriculum that suits to the needed competences in each field with inputting the minimum 9 areas of project management competency fitting with the indicators and this research (PMBOK 4th ).

B. The basis of Resources and Capabilities
Based on the model simulation, it shows that the score of resources and capabilities (RC) in the early simulation year (0 year) is 0,768 (76,8%) increasing to 0,846 (84,6 %) in the 10 th year.Along with the increasing score of RC, the performance score (P3) is increasing gas well, so the performance score in the early simulation year (0 year) is 0,76 (76 %) increasing to (82.2 %) in the 10 th year (figure 6 and table 1).This result shows that resources and capabilities from the corporations has a positive and significant influence towards the corporations' performance.The PMC-RC-P model in this research shows that the resources and capabilities in small-medium contractor can be both improved through project management competency, and through partnership or collaboration with other corporations (figure 6).The partnership of small-medium contractors is a mutualism partnership with big corporations along with the training and development from the big corporations.The partnership will produce the efficient and synergic resources among those partners, thus it might increase the image of small-medium corporations, apply the result of this research, adopt the constructor innovations from the big contractors.The collaboration term is usually taken to explain the practices between two sides or more to achieve the same purposes and involve both each work and collective work in gaining the same purposes.The main motivation is to gain the collective results that are very impossible to gain with the individual work.Besides the cooperation, those corporations collaborate in gaining the innovative results and new idea.Resources and capabilities in tangible or intangible assets are one of the important parameters for small-medium contractors in Indonesia, because the resources or capabilities can influence the contractors' performance (Pearce &Robinson, 2003 andCheah& Miller, 2004) [21] [22].Typically, the contractors in small qualification have a low/medium resources or capabilities, while the medium contractors have a medium/good resources or capabilities, good in both leadership and experience (Huda & Wibowo, 2013).

C. The basis of Performance (P)
Based on the result of model simulation, it shows that project management competency (PMC) score increases in the early simulation year (0 year) from 0,725 (72,5%) becoming 0,797 (79,7%) in the 10 th year.The same case is happened to the resources and capabilities (RC), in the early simulation year (0 year), it starts with 0,768 (76,8%) increasing to 0,846 (84,6 %) in the 10 th year.The influence of PMC score and RC score is in the performance improvement (Y3), in the early simulation year (0 year) it starts with 0,76 (76 %) then increasing to 0,822 (82.2 %) in the 10 th year (figure 7 and table 2).

IV. CONCLUSION
The use of dynamic simulation tool is a model diagram illustrating a causal loop, stocks and flows that are intended to show the relationship of different variables and how these variables affect each other.In this study the influence of variables modeled in the form of an increase in the value of a variable percentage of the development time.Results of simulation modeling can be done by giving the value of the different variables and the development of the future.The model suggested in this study shows the relationship between the project management competence (PMC), resource / capability (RC) and performance (P) that can provide the most optimal improvement.

Fig. 2 .
Fig. 2. Stock flow diagram of PMC-RC-P model without scenario (continuing) C. Dynamic simulation of PMC-RC-P model.Figure3shows that the dynamic model of management competency, resources or capabilities and performance consist of 4 sub-systems, those are collaboration and partnership to sum up the training and certification both in professional standard competency and skilled standard competency.Based on the conceptual model of PMC-RC-P, those sub-systems are categorized into 3 variables.A model simulation is a dynamic change and shown both in graphic time and time table.The result from this simulation can be explained in three sub-system, they are project management competency, resources/capabilities and performance.

Fig. 3 . 1 X
Fig. 3.The system and sub-system of PMC-RC-P dynamic model with scenario.The early assumption of dynamic model is based on these followings: 1. Training score (X1) = 70% (this score is the percentage of total average from 5 indicator inputs which influence time management, cost management, human resources management, communication management, project scope management) 2. Certification score (X2) = 75% (this score is the percentage of total average from 4 indicator inputs which influence quality management, risk management, chain supply management, claim management) 3. Collaboration score (Y1) = 80% (this score is the percentage of total average from 3 indicator inputs which influence financial resources, technique competency and leadership)

Table 2
Value PMC, RC & P in the 10 th year