Ni Luh Dian Purnami, Mia Juliana Juliana, Nyoman Putri Ari Amelinda
Penelitian ini bertujuan untuk mengidentifikasi penyebab keterlambatan produksi dan menyusun simulasi penjadwalan berbasis linear programming pada PT CS, sebuah perusahaan inflight catering di Indonesia. Permasalahan keterlambatan berpotensi menyebabkan kontaminasi makanan akibat ketidaksesuaian suhu penyimpanan serta mengganggu ketepatan waktu keberangkatan pesawat. Penelitian dilakukan melalui observasi langsung, wawancara, dokumentasi, dan pengumpulan data kuantitatif dari aktivitas produksi khususnya pada stasiun kerja hot dishing. Analisis akar masalah dilakukan dengan diagram fishbone dan metode Risk Priority Number (RPN) untuk mengidentifikasi faktor dominan penyebab keterlambatan, yaitu kekurangan tenaga kerja tetap dan tidak adanya penjabaran waktu per aktivitas. Selanjutnya, dilakukan simulasi penjadwalan menggunakan pendekatan linear programming dengan memanfaatkan fitur Solver di Microsoft Excel. Tiga skenario alokasi tenaga kerja (8, 6, dan 4 kelompok kerja) dianalisis untuk memperoleh waktu optimal pemrosesan. Hasil simulasi menunjukkan bahwa pengelompokan 8 pekerja ke dalam 4 kelompok kerja menghasilkan waktu paling optimal sebesar 1205,49 detik, dibandingkan skenario lainnya. Penelitian ini menyimpulkan bahwa pendekatan sistematis dalam identifikasi akar masalah dan simulasi berbasis optimasi matematika mampu memberikan solusi efektif dalam pengurangan keterlambatan produksi. Rekomendasi selanjutnya mencakup perumusan standar waktu operasional dan evaluasi kompetensi tenaga kerja secara berkala.
Mixed oxides MexCo3−xO4 (Me: Ni or Mg, x = 0–0.9) with a spinel structure were synthesized by precipitation from Me, Co nitrate solutions using (NH4)2CO3 as the precipitating agent with subsequent modification of the dry precipitate with cesium by the Pechini method and calcination. The samples were studied by XRD, TPR, and TPD methods. Their catalytic activity was studied in the low-temperature (150–350 °C) nitrous oxide decomposition process. It was shown that an increase in the degree of substitution of cobalt (x) leads to a significant decrease in the degree of crystallization of the oxides, an increase in the specific surface area, and the formation of surface weakly bound oxygen species. The highest activity was shown by the catalysts with a degree of substitution x = 0.1, especially by the nickel-substituted sample, which contained the maximum amount of weakly bound surface oxygen species. The difference in the influence of Mg and Ni on the MexCo3−xO4 properties is discussed.
AI/ML for data centres and data centres for AI/ML are defining new trends in cloud computing. Disaggregated heterogeneous reconfigurable computing systems realized by photonic interconnects and photonic switching expect greatly enhanced throughput and energy-efficiency for AI/ML workloads, especially when aided by an AI/ML control plane.
With the growing popularity of eSport games, eSport-related issues have gradually gained attention and discussion in academic research. However, the positive benefits (values) brought by playing eSport have not received too much attention in current research. Therefore, after reviewing related research in the past, this study proposed that eSport has the 5 Cs educational Value of cultivating the cooperative attitude, communication skills, critical thinking, self-confidence and continuous improvement attitude based on the three-domain model (TDM) of cognitive, affective and psychomotor, and developed an eSport educational values scale. In this study, a conceptual sampling method was adopted and players with eSport experience were invited to fill out the questionnaire. A total of 316 participants filled out the questionnaire, 51 invalid samples were deleted, the number of effective participants was 265, and the effective recovery rate was 83.9%. Then SPSS 23.0 and AMOS 20.0 were used to analyze the reliability and validity of the scale, and the verification results show the scale developed by this study has good reliability and validity. In addition, in this study, it was also found that the participants had a positive view (M 3.9) on the 5 Cs educational value of the MOBA type eSport, which shows that eSport is not only a casual game, moderate playing this game can also bring educational significance to players.
Razvan-Andrei Stoica, Giuseppe Thadeu Freitas de Abreu
At the dawn of 5G, we take a leap forward and present an original vision of wireless communication beyond its horizon towards 6G: a paradigm-shifting perspective of wireless networks on the cusp of an AI revolution.
We present the Epidemic routing protocol implementation in ns-3. It is a full-featured DTN protocol in that it supports the message abstraction and store-and-haul behavior. We compare the performance of our Epidemic routing ns-3 implementation with the existing implementation of Epidemic in the ONE simulator, and discuss the differences.
This article explains how to construct a protocol-independent model for passing traffic through a wireless network with a single channel carrier sense multiple access/collision detection (CSMA/CD) media access model.
We analyze Defragmentation-as-a-Service (DaaS) in elastic optical networks and show that the positive effect of defragmentation depends on the rate at which it is performed, load (or, call arrival rates) and the available resources.
This article explains how to construct a sheaf model for passing traffic through a wireless network with a single channel carrier sense multiple access/collision detection (CSMA/CD) media access model.
The work contains a first attempt to treat the problem of routing in networks with energy harvesting units. We propose HDR - a Hysteresis Based Routing Algorithm and analyse it in a simple diamond network. We also consider a network with three forwarding nodes. The results are used to give insight into its application in general topology networks and to general harvesting patterns.
In this paper we present ChirpCast, a system for broadcasting network access keys to laptops ultrasonically. This work explores several modulation techniques for sending and receiving data using sound waves through commodity speakers and built-in laptop microphones. Requiring only that laptop users run a small application, the system successfully provides robust room-specific broadcasting at data rates of 200 bits/second.
In this paper we have put forth a novel methodology to relay data obtained by inbuilt sensors of smart phones in real time to remote database followed by fetching of this data . Smart phones are becoming very common and they are laced with a number of sensors that can not only be used in native applications but can also be sent to external nodes to be used by third parties for application and service development.
In this letter, we obtain the stable throughput region for a cognitive relaying scheme with a finite relaying buffer and imperfect sensing. The analysis investigates the effect of the secondary user's finite relaying capabilities under different scenarios of primary, secondary and relaying links outages. Furthermore, we demonstrate the effect of miss detection and false alarm probabilities on the achievable throughput for the primary and secondary users.
In this research paper, state space representation of concurrent, linearly coupled dynamical systems is discussed. It is reasoned that the Tensor State Space Representation (TSSR) proposed in [Rama1] is directly applicable in such a problem. Also some discussion on linearly coupled, concurrent systems evolving on multiple time scales is included. Briefly new ideas related to distributed signal processing in cyber physical systems are included.
Gadi Gayathri Devi, Priya Kumari, Eslavath Jyoshna
et al.
In this research paper, the problems dealing with sensor network architecture, sensor fusion are addressed. Time/Computationally optimal network architectures are investigated. Some novel ideas on sensor fusion are proposed.
This is a variation of the two-sided market model of [10]: Demand D is concave in \tilde{D} in (16) of [10] So, in (5) of [10] and after Theorem 2, take the parametric case 0 < a <1. Thus, demand D is both decreasing and concave in price p, and so the utilities (U=pD) are also concave in price. Also, herein a simpler illustrative demand-response model is used in Appendix A and B.
Distributed denial of service attacks are often considered a security problem. While this may be the way to view the problem with today's Internet, new network architectures attempting to address the issue should view it as a scalability problem. In addition, they need to address the problem based on a rigorous foundation.