Hasil Pencarian  ::  Simpan CSV :: Kembali

"ABSTRACTAs confirmed by marketing studies, customer demand sometimes increases with the amount of inventory available, depending on the nature of goods. This paper analyzes a two tier supply chain under such inventory dependent demand (IDD). The analysis of the paper for the supply chain is in two modes, as a vendor leading Stackelberg game and as its integrated counterpart, followed by the profit sharing or the holding cost sharing mechanism to further improve the vendors profit from the vendor leading mode. The analysis procedure is complicated by non zero fixed costs in the system such that the profit functions are non concave. The analysis is complete such that the optimal quantities and their sensitivities, the optimal ordering quantities, the optimal wholesale prices, etc., are given under IDD. The tradeoff between the profit sharing and the holding cost sharing mechanisms are given under the influence of the zero and non zero fixed costs in the system."

"Pemborosan inventory disebabkan karena tidak adanya koordinasi dalam sistem Supply Chain Management. Koordinasi antara vendor dan buyer dapat mengurangi biaya inventory dalam sistem. Dengan metode joint economic lot size akan ditentukan lot produksi dan lot order yang optimal bagi vendor dan buyer. Dalam penelitian ini juga diusulkan penerapan metode quantity discount. Dari penelitian ini diperoleh nilai lot produksi dan lot order optimal serta nilai quantity discount. Selain itu, diperoleh juga perbandingan besarnya biaya inventory model independen dengan model koordinasi. Pengaruh perubahan parameter terhadap perilaku model diteliti dengan sensitivity analysis terhadap beberapa parameter kunci.

---

The problem of inventory loose is caused by non co¬ordination in the Supply Chain Management. Co¬ordination between vendor and buyer could minimize inventory cost in the system. Joint economic lot size method will determined the optimal lot production and lot order for vendor and buyer. This research also propose the quantity discount method. From this research, the joint economic lot size production and order and the value of the quantity discount are obtained. Also, the differences of inventory cost between independent model and co¬ordination model are obtained. Finally, A sensitivity analysis is performed to explore the effect of key parameters. "

"Penelitian ini mengembangkan model Vendor Managed Inventory untuk sistem rantai pasok dua eselon yang terdiri dari satu vendor dan dua pembeli dengan tipe kontrak buy-back terhadap pembeli 1 dan tipe kontrak revenue-sharing terhadap pembeli 2. Dampak penggunaan dua jenis kontrak secara bersamaan ini dianalisis dengan membandingkan model utama tersebut dengan model serupa yang menggunakan kontrak buy-back terhadap kedua pembeli model pembanding 1 dan model serupa yang menggunakan kontrak revenue-sharing terhadap kedua pembeli model pembanding 2 . Hasil penelitian menunjukkan bahwa penggunaan kontrak buy-back dan revenue-sharing secara bersamaan mengubah nilai variabel kontrak pada setiap model pembanding untuk menghasilkan alokasi keuntungan tertentu dalam kondisi keuntungan sistem yang maksimal.

---

This study develops a Vendor Managed Inventory model for a two echelon supply chain system consisting of one vendor and two buyers with buy back contract with the first buyer and revenue sharing contract with the second buyer. The impacts of using two types of contracts simultaneously are analyzed by comparing the main model with a similar model using buy back contracts against both buyers comparative model 1 and a similar model using revenue sharing contracts to both buyers comparative model 2 . The result indicates that the use of buy back and revenue sharing contract simultaneously changes the value of contract variables on each comparative model to produce a certain profit allocation under the maximum system rsquo s profit condition."

"Terdapat berbagai cara bagi sebuah perusahaan untuk bersaing di pasar, menciptakan rantai pasokan yang efektif bisa menjadi pilihan dengan membangun cara baru kemitraan dengan vendor. Menghilangkan non-added value melalui rantai pasok dapat dilakukan dengan menerapkan Vendor Managed Inventory (VMI). Dengan berbagai manfaat yang diperoleh dari konsep ini, terdapat beberapa risiko yang terlibat. Kebanyakan orang lebih memperhatikan apa yang dihadapi supplier dengan menerapkan konsep ini daripada apa yang ada di sisi retailer. Memilih vendor yang tepat untuk menerapkan konsep ini dengan mengetahui risikonya harus menjadi perhatian karena retailer akan bergantung pada keputusan vendor mengenai inventoy mereka. Tujuan dari penelitian ini adalah untuk mengidentifikasi risiko yang dihadapi retailer dan merancang model pemilihan vendor yang tepat untuk menerapkan konsep VMI. Mengintegrasikan metode untuk mengidentifikasi risiko (FMEA) dan metode untuk menyelesaikan pengambilan keputusan multi kriteria (FAHP) diyakini dapat memperoleh hasil yang kuat dan mengurangi bias dengan mempertimbangkan kombinasi penilaian. Pengumpulan data pada perusahaan retail yang sudah menerapkan konsep VMI dilakukan sebagai studi kasus dalam penelitian ini.

---

There is a varied way for a company to compete in the market, creating an effective supply chain could be the choice by building a new way of a partnership with vendors. Eliminating non-added value through the supply chain can be done by implementing Vendor Managed Inventory (VMI). With all the benefits derived from this concept, it comes with some risks involved. Most people pay more attention to what suppliers faced by implementing this concept instead of what's on the retailer side. Selecting the right vendor to implement this concept by knowing the risk have to be a concern since retailer needs to rely on the vendor's decision of their inventory.

The objective of this research is to identify the risks faced by retailers and design the appropriate vendor selection model to apply the concept of VMI. Integrating method for identifying the risk (FMEA) and a method for solving multi-criteria decision making (FAHP) is believed to be able to obtain a robust result and reduce bias by considering the combination of assessment. Collecting data at retail company that already applied the concept of VMI was carried out as a case study in this study."

"Setiap industri berlomba-lomba khususnya ritel, melakukan transisi atau menambah channel penjualannya tidak hanya melalui toko fisik, tetapi juga melalui channel online. Begitupun hal nya dengan gudang yang dituntut untuk bisa ikut serta dalam proses pemenuhan pesanan baik itu melalui toko maupun melalui online. Penelitian ini mengembangkan inventory model untuk gudang dual channel dengan kapasitas gudang yang terbatas dan adanya pengembalian produk. Dengan gudang terbagi menjadi dua bagian, yaitu untuk pemenuhan pesanan of line dan untuk pemenuhan pesanan online. Pengembangan model ini juga mempertimbangkan ketidakpastian permintaan dan lead time pengiriman. Kendala kapasitas gudang bersifat convex nonlinear programming dan menggunakan analisis Karush-Kuhn-Tucker dalam menyelesaikannya. Solusi bentuk tertutup dikembangkan menggunakan distribusi normal tanpa adanya kendala kapasitas gudang yang terbatas, dan algoritma yang berulang atau iteratif menggunakan bisection method untuk kasus dengan adanya kendala kapasitas gudang yang terbatas. Analisis numerik dilakukan langsung terhadap gudang di perusahaan ritel olahraga untuk mendapatkan secara nyata model yang diusulkan. Hasil penelitian menunjukkan bahwa kapasitas gudang sangat mempengaruhi besarnya ukuran jumlah pemesanan. Analisis sensitivitas yang dilakukan juga menunjukkan bahwa model yang diusulkan menawarkan solusi yang optimal untuk ukuran jumlah pesanan dan reorder point serta dapat pula meminimumkan total biaya gudang.

---

Every industry is competing, especially retail, to transition or increase its sales channels not only through physical stores, but also through online channels. Likewise, warehouses are required to be able to participate in the order fulfillment process both through stores and online. This research develops an inventory model for dual channel warehouses with limited warehouse space and product returns. With the warehouse divided into two parts, namely for offline order fulfillment and for online order fulfillment. The development of this model also considers demand uncertainty and delivery lead time. The warehouse space constraint is convex nonlinear programming and uses Karush-Kuhn-Tucker analysis in solving it. A closed-form solution was developed using normal distribution in the case of no limited warehouse space constraints, and an iterative algorithm using bisection method for the case with limited warehouse space constraints. Numerical analysis was conducted directly on a warehouse in a sports retail company to get a real-world view of the proposed model. The results show that warehouse space greatly affects the size of the order quantity. The sensitivity analysis conducted also shows that the proposed model offers an optimal solution for the size of the order quantity and reorder point and can also minimize the total warehouse cost."

"ABSTRACTThis paper proposes a multi-product Vendor-Managed Inventory (VMI) supply chain inventory model by considering defective items. In this way, vendor purchases different kinds of products from a remote supplier and then delivers them to the retailer. On the other hand, delivered batches have some imperfect items while there is no access to the supplier to replace them. Consequently, there are two options to face imperfect items in order to satisfy the demand, buy or repair. Additionally, some innovations and contributions in this paper are Join Replenishment Policy, all units discount, different alternatives for shipping goods and backlogging shortage. They result in a novel VMI model that is as close as possible to the real world. Since, the proposed problem was NP-complete, two evolutionary algorithms are developed to solve it, Genetic Algorithm (GA) and imperialist Competitive Algorithm (ICA). After calibrating their main parameters by Taguchi approach, their performance is compared by solving numerical examples."

"The classical inventory models usually consider deterioration rate and demand rate as constant quantities, but, in the practical situations, the deterioration rate and the demand rate are uncertain in nature. In this paper, a new two-warehouse inventory model with fuzzy deterioration rate and fuzzy demand rate under conditionally permissible delay in payment is developed. The deterioration rate and demand rate are considered as right-shaped fuzzy numbers. The objective was to obtain the optimum value of the fuzzy total cost. The numerical examples are also considered to compare the crisp model and its corresponding fuzzy model. Finally, a sensitivity analysis is carried out to get the sensitiveness of the tolerance of different input parameters."

"New product launching (NPL) to the local market by subsidiary managers is a strategic activity, which requires organizational supports from MNC global network. The NPL activity is marked by high level of uncertainty, risk, and market failure. Thus, a headquarter needs to integrate the subsidiary NPL into the global strategy. At the same time, subsidiary managers need to have a certain level of autonomy to ensure that the launching program is adapted to the local specificities. These two pressures have forced the subsidiary managers to take up the roles of ?boundary spanners?. Good working environment between subsidiaries? managers and headquarter is believed to be the determinant factor for the new product performance. However, good working environment between headquarter and subsidiary is not automatically conditioned. The types of coordination developed by the headquarter influence the subsidiary managers and the headquarter working environment, and hence determine the new product success. This research emphasizes that negotiation coordination is more suitable than the hierarchical coordination when building good working environment during NPL process, determines the commercial performance of new products."

"Tingginya persediaan produk farmasi di rumah sakit di Indonesia sering mengalami kadaluwarsa. Pelayanan kefarmasian merupakan salah satu standar pelayanan kesehatan rumah sakit yang harus diikuti. Proses manajemen persediaan farmasi yang diadopsi rumah sakit saat ini mengalami masalah persediaan dan kesulitan komunikasi data. Penelitian ini bertujuan untuk merancang perbaikan aliran informasi dan proses manajemen persediaan produk farmasi melalui implementasi konsep Vendor Managed Inventory (VMI) berbasis Internet of Things (IoT). Business Process Reengineering (BPR) dan Structured System Development (SSD) digunakan dalam penelitian ini. SSD terdiri dari tahapan pembuatan Entity Relationship Diagram (ERD), Tabel Relational, use case diagram, dan Data Flow Diagram (DFD) untuk proses perbaikan. Terdapat lima rancangan skenario perbaikan yang kemudian disimulasikan menggunakan software iGrafx. Skenario terbaik yang dapat dipertimbangkan rumah sakit dalam melakukan perbaikan adalah skenario kelima dengan tingkat efisiensi waktu terbesar yaitu 95.64% melalui penerapan kombinasi antara konsep VMI, Teknologi IoT dalam bentuk QR Code atau RFID Tag, dan pengembangan Sistem Informasi Manajemen Rumah Sakit (SIMRS). Waktu siklus manajemen persediaan farmasi yang sebelumnya memakan waktu 177 jam mengalami perubahan menjadi 8 jam.

---

High number of pharmaceutical product in Indonesian hospital are prone to expiration problem. Pharmaceutical service is one of the hospital health service standards that must be followed. Medicines inventory management process adopted by the hospital is currently have difficulties in inventory and data communication. The purpose of this study is to design an improvement of information flow and process for medicines inventory management through Vendor Managed Inventory (VMI) supported with Internet of Things (IoT). Business Process Reengineering (BPR) and Structured System Development SSD used in this study. Four stages of SSD consist of structuring Entity Relationship Diagram ERD, tabel relational, use case diagram, and Data Flow Diagram DFD for improvement process. This study proposed five improvement scenarios simulated using iGrafx. The best scenario for hospital to consider in conducting improvement is the intervention of VMI, IoT technology in the form of QR Code or RFID Tag, and Hospital Management Information System SIMRS development. The proposed model resulted on medicines inventory management time efficiency to 95.64%, which previously took 177 hours to 8 hours"