This paper describes the development and evaluation of the Quick Exposure Check (QEC), which is an observational tool developed for Occupational Safety and Health (OSH) practitioners to assess exposure to risks for work-related musculoskeletal disorders and provide a basis for ergonomic interventions. The tool is based on epidemiological evidence and investigations of OSH practitioners' aptitud...

Dalam kegiatan produksi tidak terlepas dari operator, dalam interaksi antara manusia dan mesin tersebut membutuhkan postur tubuh yang baik agar produk dikeluarkan lebih optimal. Sering kali para pekerja mengalami nyeri otot saat melakukan pekerjaan terutama pada bagian leher punggung, hal dikarenakan oleh kerja ergonomi sehingga berakibat tingginya terjadi risiko cedera musculoskeletal disorder...

Leakage outside of the qubit computational subspace poses a threatening challenge to quantum error correction (QEC). We propose scheme using two leakage-reduction units (LRUs) that mitigate these issues for transmon-based surface code, without requiring an overhead in terms hardware or QEC-cycle time as previous proposals. For data qubits we consider microwave drive transfer leakage readout res...

It is important to protect quantum information against decoherence and operational errors, and quantum error-correcting (QEC) codes are the keys to solving this problem. Of course, just the existence of codes is not efficient. It is necessary to perform operations fault-tolerantly on encoded states because error-correction process (i.e., encoding, decoding, syndrome measurement and recovery) it...

Quantum error correction (QEC) is one of the central concepts in quantum information science and also has wide applications fundamental physics. The capacity theorems provide solid foundations QEC. We here a general highly applicable form theorem for both classical information, i.e., hybrid with assistance limited resource entanglement one-shot scenario, which covers broader situations than exi...

We demonstrate that there exists a universal, near-optimal recovery map—the transpose channel—for approximate quantum error-correcting codes, where optimality is defined using the worst-case fidelity. Using the transpose channel, we provide an alternative interpretation of the standard quantum error correction (QEC) conditions and generalize them to a set of conditions for approximate QEC (AQEC...

We analyze the long time behavior of a quantum computer running a quantum error correction (QEC) code in the presence of a correlated environment. Starting from a Hamiltonian formulation of realistic noise models, and assuming that QEC is indeed possible, we find formal expressions for the probability of a given syndrome history and the associated residual decoherence encoded in the reduced den...