Sistem Informasi Manajamen Persediaan Barang pada Toko Bangunan UD. Alnas Menggunakan Eqonomic Order Quantity (EOQ)

This study aims to optimize inventory management at UD. Alnas Building Store by implementing the Economic Order Quantity (EOQ) method. The main problem faced by this store is the uncertainty in the quantity of orders that will come, which can result in excess or shortage of inventory. One effective way to manage inventory is by using an inventory management information system. This article discusses the use of an inventory management information system in UD Alnas Building Store. This system is used to collect, store, and process information related to the store's inventory. Several features in the information system, such as recording stock items, monitoring sales, determining inventory needs, calculating Cost of Goods Sold (COGS), and generating reports, greatly assist in effective inventory management. Although it has some drawbacks, the use of inventory management information systems has helped UD Alnas Building Store managers in monitoring stock items, calculating, determining inventory needs, and generating accurate and timely reports.Penelitian ini bertujuan untuk mengoptimalkan manajemen persediaan barang pada Toko Bangunan UD. Alnas dengan menerapkan Metode Economic Order Quantity (EOQ). Masalah utama yang dihadapi oleh toko ini adalah ketidakpastian dalam jumlah pesanan yang akan datang, yang dapat mengakibatkan kelebihan persediaan atau kekurangan persediaan. Salah satu cara untuk mengelola persediaan barang yang efektif adalah dengan menggunakan sistem informasi manajemen persediaan barang. Artikel ini membahas tentang penggunaan sistem informasi manajemen persediaan barang pada toko bangunan UD Alnas. Sistem informasi ini digunakan untuk mengumpulkan, menyimpan, dan memproses informasi yang berkaitan dengan persediaan barang toko. Beberapa fitur dalam sistem informasi tersebut, seperti pencatatan stok barang, pemantauan penjualan barang, penentuan kebutuhan barang, penghitungan HPP (Harga Pokok Penjualan), dan pembuatan laporan, sangat membantu dalam pengelolaan persediaan barang yang efektif. Meskipun memiliki beberapa kelemahan, penggunaan sistem informasi manajemen persediaan barang telah membantu pengelola toko bangunan UD Alnas dalam memantau stok barang, menghitung, menentukan kebutuhan barang, dan membuat laporan yang akurat dan tepat waktu

Procrustean entanglement concentration in quantum-classical networking

The success of a future quantum internet will rest in part on the ability of quantum and classical signals to coexist in the same optical fiber infrastructure, a challenging endeavor given the orders of magnitude differences in flux of single-photon-level quantum fields and bright classical traffic. We theoretically describe and experimentally implement Procrustean entanglement concentration for polarization-entangled states contaminated with classical light, showing significant mitigation of crosstalk noise in dense wavelength-division multiplexing. Our approach leverages a pair of polarization-dependent loss emulators to attenuate highly polarized crosstalk that results from imperfect isolation of conventional signals copropagating on shared fiber links. We demonstrate our technique both on the tabletop and over a deployed quantum local area network, finding a substantial improvement of two-qubit entangled state fidelity from approximately 75\% to over 92\%. This local filtering technique could be used as a preliminary step to reduce asymmetric errors, potentially improving the overall efficiency when combined with more complex error mitigation techniques in future quantum repeater networks.Comment: 6 pages, 5 figure

Subcutaneous emphysema in a case of infective sinusitis: a case report

<p>Abstract</p> <p>Introduction</p> <p>Subcutaneous emphysema with pneumomediastinum is a rare phenomenon with a high morbidity and may occur spontaneously.</p> <p>Case presentation</p> <p>A 30-year-old Caucasian man presented with sudden onset of a painful, swollen neck and was found, via clinical and radiological examination to have subcutaneous emphysema. A swallow study showed no oesophageal perforation. Computed tomography of his neck and thorax demonstrated pneumomediastinum but no other pathology. Management was conservative with intravenous antibiotics, fluids and no oral intake. He had a history of a productive cough and a flexible nasoendoscopy found purulent sinusitis which was treated with topical nasal washes. The patient was discharged after 72 hours and will be followed up by the otolaryngology-head and neck service.</p> <p>Conclusions</p> <p>Infective sinusitis is a rare cause of subcutaneous emphysema and pneumomediastinum. It may be managed conservatively provided there is early recognition and exclusion of more serious pathology, such as a ruptured trachea or oesophagus.</p

Optimal resource allocation for flexible-grid entanglement distribution networks

We use a genetic algorithm (GA) as a design aid for determining the optimal provisioning of entangled photon spectrum in flex-grid quantum networks with arbitrary numbers of channels and users. After introducing a general model for entanglement distribution based on frequency-polarization hyperentangled biphotons, we derive upper bounds on fidelity and entangled bit rate for networks comprising one-to-one user connections. Simple conditions based on user detector quality and link efficiencies are found that determine whether entanglement is possible. We successfully apply a GA to find optimal resource allocations in four different representative network scenarios and validate features of our model experimentally in a quantum local area network in deployed fiber. Our results show promise for the rapid design of large-scale entanglement distribution networks.</jats:p

Enabling multimedia aware vertical handover Management in Internet of Things based heterogeneous wireless networks

Enabling seamless connectivity in Internet of Things (IoT) based heterogeneous wireless networks and pervasive use of smartphones in daily life require high data speed and always-best-connected services. However, providing vertical handover management in heterogeneous wireless networks is a difficult and challenging task. Moreover, various issues are present in the current vertical handover management schemes such as inappropriate handover triggering, high handover delay, wrong network selection, etc. In order to address the aforementioned issues, we propose a generic vertical handover management scheme. Our research is twofold; firstly, the Mobile Node (MN) dynamically checks the data rate required by the applications running on the MN’s device. If the data rate drops below a predefined threshold, the MN initiates the handover. Secondly, the network selection is performed by considering various parameters such as end-to-end delay, jitter, Bit Error Rate, and packet loss. The Artificial Bee Colony (ABC) optimization algorithm uses the above parameters to select the target network with minimum handover delay and time. The proposed scheme is compared with the Simple Additive Weighting (SAW), Weighted Product Method (WPM), Technique for Order of Preference by Similarity to Ideal Solution (TOPSIS), and Fuzzy TOPSIS in context of energy consumption, throughput, average MN’s stay time in a network, handover delay, and handover time. The experimental results show that the proposed vertical handover management scheme outperforms the existing schemes used for similar purpos