The Effects of Inventory Management Capability on Performance of the Firm-Business Strategies as a Mediating Role

The research aim is to evaluate the mediating aspects of business strategies e.g. differentiation and cost leadership strategy in affecting the aspects of inventory capability e.g. cost-related factors of inventory and techniques of inventory and firm performance e.g. return on asset (ROA) and improve productivity (IMP) of the Bangladeshi garment industry. A survey was utilized to collect information and the questionnaire was dispersed among 385 senior managers in the readymade garment industry of Bangladesh. For the data analysis, AMOS version 24 and SPSS version 23 were used. The findings of the analyzed data revealed that strategies of the business mediate the consequence of inventory materials capability and performance of the firm. The (SEM) results identify that the study model has an appropriate observation fits.


Introduction
The economy of Bangladesh is heavily dependent on the readymade garment industry which is the foundation for creating job opportunities in the country. In a developing country like Bangladesh, the garment industry is the major driver for industrialization. The readymade garment industry is the basis of foreign earnings and accounted for 81% of total export income in Bangladesh (BGMEA, 2016). Bangladesh export garment products about$28 billion, on the other hand, China who secured the first position in export equivalent to $130 billion of readymade garment product (BGMEA, 2016). The present issue is how China secured this achievement -the answer might be a business strategy with proper inventory management practices. Knitwear sector contribution increases in which the local suppliers provide about 80% of raw materials and the manufacturers whereas only 15% of raw materials are supplied by the local suppliers in the case of the woven sector. In the woven sector remaining 85% raw materials required to import from other nations (Nuruzzaman, 2013). In Bangladesh, there is insufficient raw material production which influences buying fabrics from different countries. It encourages the deficiency of vertical integration. At the end of the day, it creates high lead time to complete the order (Alam & Natsuda, 2016). There is deficiency also in the greater position of infrastructure that creates in the delay of shipment (Saxena & Salze-Lozac'h, 2010). This research applies the Resource-Based View (RBV) theory developed by Barney (1991) to evaluate business strategies as a mediating role in the consequence of inventory materials capability and firm performance of the readymade garment industry.
2. Literature Review Inventory can be defined as a stock that required producing a product e.g. items in work in process and raw materials and supportive activities' e.g. repair, operating, and maintenance (Dong et al., 2012). According to Bozarth et al. (2008) there are two categories of safety stock and the cycle of inventory stock. The stock of safety refers to the additional stock to meet up some uncertain demands and stock of cycle is the company's regular used stock (Dong et al., 2012). According to Farhani et al. (2011), stocks are reserved for various reasons-to reduce uncertainties, further sale to others, co-ordinate manufacturing process, and to achieve economies in respect of objectives. Inventory material management consists of planning, storing, and processing materials in the right place, right quantity, right quality, and the right time.
In Malaysia, inventory capability was focused on the garment industry by Bin Syed et al. (2016). The purpose of the inventory management capability of this research was to evaluate the association between inventory management and company performance. Arrangements between the evaluation of the company's performance and inventory management were identified based on days on inventory and). Days on inventory referred to identify the number of days it would be required to convert turnover from the inventory. High inventory piled up for the long term is not favorable for the company which is the major factor for business failure. Return on assets (ROA) can be defined as net profit generated after the tax has been paid divided by the company's total assets. Results indicated a direct connection between increased values on assets (ROA) and days on inventory.
It was examined the connotation between inventory capability and firm performance covering the period of 1992-2002 by Roumiantsev & Netessine, (2005).In this study, traditional variables e.g. lead time margins and inventory levels were used and found there was no connection between the reduced level of inventory and greater enactment of assessment in terms of increased values on assets (ROA). Shin et al. (2015) evaluated the affiliation between firm performance and inventory capability which reveals that a lower margin of inventory acquires a higher profit. Koumanakos (2008) evaluated the inventory management effects on the firm performance grounded on varieties of industrial sectors namely textile, food, and chemicals representing the period of 2000-2002 in Greece. The purpose was to evaluate the connection between inventory management capability and firm performance. The study focused on the traditional measurement e.g. levels of inventory, lead time, and demand. The analysis also revealed that the firm maintains a high level of inventory that leads to a lower rate of return. Kimaiyo, & Ochiri, (2014) stated management of inventory refers to systems about monitoring the inventory, reduction of cost, lead time, and demand of suppliers affect the firm performance. The study also focused that stock holding and cost of the order will improve the performance, inventory management systems reduce cost and in turn generate more profit. Shardeo (2015) examined the special consequences of inventory competency on the performance of the garment industry. It was revealed the positive association between firm competency and inventory turnover. It was also examined various factors that are important to know the concept of inventory management e.g. costs about inventory, costing methods of inventory, models of inventory, and controlling tools for inventory. Costs about inventory entail ordering cost, purchase cost, carrying cost, and shortage cost. Methods of inventory involve current price and standard price, weighted average, first-in-first-out (FIFO), and last-in-fast-out (LIFO). The model of the inventory consists of the economic order quantity (EOQ), inventory controls related to activity-based costing analysis, maximum level, minimum level and reorder level of inventory. Muiruri & Mwangangi (2017) studied to show the effects of material management, warehousing activities with managing inventory. Analysis disclosed that inventory has a great influence on firm performance in respect to material management and warehousing activities.
Various factors associated with inventory management capability namely cost-related factors, techniques of costing about inventory, methods of controlling the inventory, and various methods of inventory. Cost related inventory factors include ordering cost, carrying cost, purchase, and stock out cost. Techniques of costing about inventory include FIFO, Weighted average, LIFO, and standard costing. Models of inventory include EOQ (Economic order quantity). For controlling inventory, various methods like activity-based costing, minimum level, reorder level, maximum level, just in time, and outsourcing has significant effects on firm performance (Shardeo, 2015).
For effectively controlling inventory management, information technology plays a key role to efficiently manage the inventory system. Studies reveal that capacity and demand-oriented factors have a strong influence on inventory management. Demands of buyers always searching for quality of the product, flexibility, and delivery of the product. Safety stock levels are affected by their regular demand for inventory management. The disparity of capacity adversely affected inventory management. Sudden demand causes an increase or decrease in inventory level (Basaran, 2013). The structure developed in this study is specified in figure one. As elucidated previously, this structure consists five constructs: 'cost-related factors of inventory, and 'techniques of inventory', are treated as independent paradigms, 'business strategy' is considered as an intermediating paradigm, and 'return on asset (ROA)' and 'improve productivity (IMP)'are dependent constructs.

Research Instrument
To collect data in this study, a questionnaire was served that comprises 39 questions dividing into separate elements. The preliminary portion contains 18queries of the respondents. It contains demographic information. The other portion contains 21 queries which are constructed based on Likert scales (Five points). These scales are developed based on distinguished authors Namusongcet al., (2017), Bin Syed (2016), de Oliveira (2016), Rakovska, M. (2013), Lynch et al., (2000), and Zahra and Covin, 1993).

Data Collection
The respondents in the questionnaires were experienced managers in 2018 from the upper export readymade garment in Bangladesh. The questionnaires circulated among 450 people. 385 respondents out of 450 were correctly accomplished and were properly used.

Reliability, Validity and Measurement Scales
The value of Cronbach's alpha in this study was satisfactory and it was above 0.70. The value of Cronbach's alpha in this studyinventory management capability 0.86, business strategies 0.91, firm performance 0.81. Meanwhile, the questionnaires were developed through borrow/ adjust from specialists.

Business Strategies Scale
Business strategies scale was measured based on cost leadership and differentiation strategies such as cost minimization, procurement efficiency, full capacity utilization, controlling overhead, methods, and tools of quality control number of a new product, rate of new product development (Zahra &Covin, 1993).

Scale of Firm Performance
Firm performance scale refers to the extent of return on assets that were measured by total income before interest expense divided by total average assets (Zhao, M. et al., 2001). Improve productivity was identified by the percentage of labor productivity-comparing percentage of labor productivity from the year of -2015(Prajogo& Shoal, 2006.

Testing Hypothesis
In this research, for the data analysis, SPSS 23and AMOS 24 software was used. The questionnaire validity was identified through a load assessment procedure, confirmatory factor analysis, and extracted average variance. In the hypothesis portion and systematic results, Friedman and Spearman test of correlation, structural equation modeling, were engaged. For the testing hypothesis, the maximum alpha error was considered 0.05 (P ≥ 0.05). The mediation measurement was performed through regressions ensuring-references about Baron and Kenny, (1986). To get proper mediation, the study considered the meaningful coefficients of correlation among three paradigms (Baron & Kenny, 1986). summarized that the total effect of cost-related factors on firm performance (with the mediating role of business strategies) is significant. Moreover, the standardized coefficient (β) of the techniques of inventory on business strategies is equal to 0.232 and the standardized coefficient of the impact of competitive strategies on return on asset is equal to 0.24. However, the standardized coefficient (β) of the impact of techniques of inventory on improve productivity is equal to 0.68. All the hypothesis relationships in this orientation are also positive. Based on the results, it is summarized that the overall effects of techniques of inventory on firm competency (business strategies as a mediator) are also significant and supported the hypothesis.

Discussion
The findings revealed that firm performance in readymade garment relies on cost-related factors and various techniques of inventory. The outcomes also propose that these factors and techniques of inventory can affect firm performance through business strategies. All the hypotheses (H1, H2, H3 & H4) identified the positive (+ve) relationship amongst related factors and techniques of inventory and firm performance (p ≤ 0.05). These hypotheses were maintained by preceding research shown by various authors (Bin Syed et al., 2016;Roumiantsev & Netessine, 2005;Shin et al., 2015;Koumanakos 2008;Kimaiyo & Ochiri, 2014;Shardeo, 2015). As controllable and in organizational factors, they provide firms to establish competitive business strategies required to enhance the organizational effectiveness and efficiency. Although the many competitions in the readymade garment industry, Bangladeshi manufacturers should continuously-proceed phases to advance intra-organizational aspects resulting intensify firm activities progressively. It's necessary to use enterprise resource planning (ERP) for the further development of the production process. Garment manufacturers should give effort to have comprehensive control over the production processes and quality of inventory.
From the above findings, numerous contributions have been identified for the theory with the practice of inventory management. At first, logistics can be interlinked with strategic management by developing a new framework with theory. Secondly, present research contributes to the readymade garment industry about the new information for the RBV researches. Thirdly, the analysis engages a model concerning structural equation to test the hypothesis which supports consistency in clarifying the output. Finally, this issue highlights managers dedicating a vigilant deliberation to interior factors that they can maintain to lower the costs that allow the readymade garment factories in Bangladesh to take its place around the international market.
6. Conclusion Inventory management consists capable to forecast and measurability of inventory management practices that reduce cost and provides inventory control efficiency. Inventory is the most significant portion of any business, particularly for the garment industry. It is hidden charges which are to be measured for sustaining in the recent competitive world. Besides costs, improve productivity is also a crucial part of the garment industry. Inventory management also advances the level of productivity to survive in the present world. So, a garment manufacturing firm indispensable to fix the best practices regarding inventory monitoring to expand the return of assets in addition to productivity improvement. Planning inventory is an important part that is to be done effectively and efficiently. Without efficient inventory planning, the firm cannot be reached at the optimum level of inventory management strategy as well as a business strategy.
It's important to discourse that few limitations exist in the present issues. At first, this research attentive in business strategies e.g. cost leadership with differentiation strategies, which does not fulfill the third party logistics strategy. Secondly, the results of current issues were related to readymade garment factories particularly firms engaged with export concerning making, packaging, and cutting systems. Some variables were restricted to some extent in respondents' query e.g. improve productivity, increased value in assets. Finally, due to confidential data, it was gathered based on the experienced manager's observations. One can investigate further negotiation skills and experienced personnel for strategic purchasing. Strategic cost control and firm performance could be further researchable work.