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The purpose of the study was to determine the moderating effect of environmental uncertainties on the relationship between lean supply chain strategy and the performance of manufacturing firms in Kenya. The study utilized a descriptive research design. The target population was 829 supply chain managers or directors from manufacturing firms around the country. A sample of 270 supply chain or procurement managers was selected using stratified random sampling. Results indicated that lean supply chain strategy explained 60.7% of the total variations in the performance of manufacturing firms. In addition, lean supply chain strategy had a positive and significant effect on the performance of manufacturing firms. With the introduction of moderating variables (environmental uncertainties); lean supply chain strategy explained 33% of the total variations in the performance of manufacturing firms. This denoted those environmental uncertainties had a negative moderating effect on the relationship between lean supply chain strategy and performance of manufacturing firms in Kenya. The study concluded that lean supply chain strategy had a positive and statistically significant effect on the performance of manufacturing firms in Kenya.

The delivery system for Base Transceiver System (BTS) to strengthen the telecommunication network throughout Indonesia maritime country is needed to speed up the process due to uneven distribution of sufficient telecommunications infrastructure. PT. Gunadhya Rajawali Logistik (GRL) is a third-party logistics company that focuses on transportation and warehouse management and delivery for telecommunication equipment tools. Unfortunately, in delivering BTS installation part throughout Indonesia, PT. GRL received several warning letters and had to pay a penalty from one of customers, for being late in reporting the delivery proof. This study aims to analyze the root causes of late submission of Soft Copy of Proof of Delivery (SCPOD) to avoid penalty given by the customer and determine suitable solutions to improve the process. The approach used in this study is lean six sigma with the help of Define, Measure, Analyze, Improve, and Control (DMAIC) roadmap. According to the interview with the employees related, the root causes of late submission of SCPOD are irresponsible drivers, indiscipline drivers in carrying out deliveries, and lack of data management in the transportation system. To be able to solve this problem, several proposed solutions can be applied. The proposed solutions to overcome the root causes that should be applied by the company are to hire a document control, retraining the Standard Operating Procedure (SOP) for drivers, utilize transportation management system application, and apply incentive systems for drivers. In the future, it is recommended for PT. GRL to have a minimum standard in recruiting the drivers for example only recruit who possess a minimum of high school education to ease the completion of administrative tasks.