Модель оцінки ефективності праці персоналу на енергетичних підприємствах

Представлена розробка моделі оцінки ефективності праці для різних категорій персоналу енергетичних підприємств з урахуванням підходу до визначення компетенцій і функціональних обов’язків персоналу, їх розвитку та вдосконалення при забезпеченні бізнес-процесів і підвищенні ефективності діяльності підприємства в цілому. Ключові слова: модель, оцінка ефективності праці, персонал, енергетичні підприємства, бізнес-процеси.Представлена разработка модели оценки эффективности работы для разных категорий персонала энергетических предприятий с учетом подхода к определению компетенций и функциональных обязанностей персонала, их развития и усовершенствования при обеспечении бизнес-процессов и повышении эффективности деятельности предприятия в целом. Ключевые слова: модель, оценка эффективности труда, персонал, энергетические предприятия, бизнес-процессы.The paper presents a model of estimation of labour efficiency for different categories of energy companies’ personnel taking into account the approach of personnel’s competences and functional obligations determination, their development and improvement under providing business processes and increase of enterprises’ efficiency. Keywords: model, estimation of labour efficiency, personnel, energy companies, business processes

D-concurrence bounds for pair coherent states

The pair coherent state is a state of a two-mode radiation field which is known as a state with non-Gaussian wave function. In this paper, the upper and lower bounds for D-concurrence (a new entanglement measure) have been studied over this state and calculated.Comment: 11 page

Interferometric Bell-state preparation using femtosecond-pulse-pumped Spontaneous Parametric Down-Conversion

We present theoretical and experimental study of preparing maximally entangled two-photon polarization states, or Bell states, using femtosecond pulse pumped spontaneous parametric down-conversion (SPDC). First, we show how the inherent distinguishability in femtosecond pulse pumped type-II SPDC can be removed by using an interferometric technique without spectral and amplitude post-selection. We then analyze the recently introduced Bell state preparation scheme using type-I SPDC. Theoretically, both methods offer the same results, however, type-I SPDC provides experimentally superior methods of preparing Bell states in femtosecond pulse pumped SPDC. Such a pulsed source of highly entangled photon pairs is useful in quantum communications, quantum cryptography, quantum teleportation, etc.Comment: 11 pages, two-column format, to appear in PR

Entanglement, Bell Inequalities and Decoherence in Particle Physics

We demonstrate the relevance of entanglement, Bell inequalities and decoherence in particle physics. In particular, we study in detail the features of the ``strange'' $K^0 \bar K^0$ system as an example of entangled meson--antimeson systems. The analogies and differences to entangled spin--1/2 or photon systems are worked, the effects of a unitary time evolution of the meson system is demonstrated explicitly. After an introduction we present several types of Bell inequalities and show a remarkable connection to CP violation. We investigate the stability of entangled quantum systems pursuing the question how possible decoherence might arise due to the interaction of the system with its ``environment''. The decoherence is strikingly connected to the entanglement loss of common entanglement measures. Finally, some outlook of the field is presented.Comment: Lectures given at Quantum Coherence in Matter: from Quarks to Solids, 42. Internationale Universit\"atswochen f\"ur Theoretische Physik, Schladming, Austria, Feb. 28 -- March 6, 2004, submitted to Lecture Notes in Physics, Springer Verlag, 45 page

Sub-chronic toxicity study in rats orally exposed to nanostructured silica

Synthetic Amorphous Silica (SAS) is commonly used in food and drugs. Recently, a consumer intake of silica from food was estimated at 9.4 mg/kg bw/day, of which 1.8 mg/kg bw/day was estimated to be in the nano-size range. Food products containing SAS have been shown to contain silica in the nanometer size range (i.e. 5 – 200 nm) up to 43% of the total silica content. Concerns have been raised about the possible adverse effects of chronic exposure to nanostructured silica

Transmission of SARS-CoV-2 on mink farms between humans and mink and back to humans

Animal experiments have shown that nonhuman primates, cats, ferrets, hamsters, rabbits, and bats can be infected by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). In addition, SARS-CoV-2 RNA has been detected in felids, mink, and dogs in the field. Here, we describe an in-depth investigation using whole-genome sequencing of outbreaks on 16 mink farms and the humans living or working on these farms. We conclude that the virus was initially introduced by humans and has since evolved, most likely reflecting widespread circulation among mink in the beginning of the infection period, several weeks before detection. Despite enhanced biosecurity, early warning surveillance, and immediate culling of animals in affected farms, transmission occurred between mink farms in three large transmission clusters with unknown modes of transmission. Of the tested mink farm residents, employees, and/or individuals with whom they had been in contact, 68% had evidence of SARS-CoV-2 infection. Individuals for which whole genomes were available were shown to have been infected with strains with an animal sequence signature, providing evidence of animal-to-human transmission of SARS-CoV-2 within mink farms

Scholarly publishing depends on peer reviewers

The peer-review crisis is posing a risk to the scholarly peer-reviewed journal system. Journals have to ask many potential peer reviewers to obtain a minimum acceptable number of peers accepting reviewing a manuscript. Several solutions have been suggested to overcome this shortage. From reimbursing for the job, to eliminating pre-publication reviews, one cannot predict which is more dangerous for the future of scholarly publishing. And, why not acknowledging their contribution to the final version of the article published? PubMed created two categories of contributors: authors [AU] and collaborators [IR]. Why not a third category for the peer-reviewer?Scopu

Delfi?n3Xt Nanosatellite Subsystems: Buying, Outsourcing or Internal Development

This paper provides the results of a study of project management and systems engineering effectiveness regarding the allocation of work and procurement policy of a nanosatellite project. The Delfi-n3Xt nanosatellite is currently under development at Delft University of Technology (TU Delft) and will serve as a case study for this analysis. Delfi-n3Xt primary mission objectives are education, technology demonstration (payloads) and advancement of nanosatellite bus subsystems. For each (sub-) system of a satellite, there are in different option to allocate the work or to procure a certain (sub-) system. The criteria for choosing an option can be based on organizational, technical, political and social arguments. A selection of these examples is taken as a case study to provide insight in the rationale behind the choices. It is shown that trade-offs for work allocation or procurement policies are sensitive to different approaches and it is suggested that in many cases trade-offs might be flawed due to subjective manners which have not or will not be documented. It is finally stated that this might lead to problems and it is likely that this lack of transparency also take place in other space projects.Space EngineeringAerospace Engineerin