Miracle-dz/UniFAR-FTUs huggingface dataset:
Inter-organizational learning in drifting environments - Experiences from a multi-firm software development project

This paper examines conditions under which organizations can acquire and profitably utilise knowledge generated in joint product development ventures. Past research states that such learning depends on relationships between knowledge accumulation at the level of joint venture and the evolution of knowledge structures in the wider organizational environment. An important argument of this paper is that such relationships might drift abruptly due to unforeseen events taking place during project operation, creating new challenges and opportunities for learning. Drawing upon previous research on project-based learning, the paper proposes a model of interorganizational learning aimed to help managers and researchers visualising links between drift and learning in distributed project contexts. The paper illustrates and assesses the empirical relevance of the analytical framework through a case study of a multi-firm product development project in the European software industry.
What to Replicate?

In their recent BBS article, Zwaan et al. (2017) synthesized arguments for and against replication research and laid out a convincing argument for the value of direct replication in science. My collaborators and I wrote a commentary on this article (Coles et al. 2018). In it, we argued that in order to maximize the utility of replication in a science that is operating under resource constraints (there is only so much time and money for doing research), we need to deal with the question of when to replicate. In other words, assume that a researcher has limited resources and can either replicate a previous study or run an original study of their own. Both of these options have costs (e.g. money for subject recruitment, time spent conducting the study) and benefits (e.g. theoretical innovation, estimate accuracy, societal impact). Considering both options, the researcher will need to decide which has the higher cost/benefit ratio.
Effects of Clostridium butyricum and a Bacteriophage Cocktail on Growth Performance, Serum Biochemistry, Digestive Enzyme Activities, Intestinal Morphology, Immune Responses, and the Intestinal Microbiota in Rabbits

The objective of this study was to assess the effects of dietary supplementation with Clostridium butyricum (CB) and a bacteriophage cocktail (BP) on growth performance, serum biochemical parameters, intestinal digestive and oxidase enzymes, intestinal morphology, immune responses, and the cecum microbiota in rabbits. In total, 108 New Zealand rabbits (5 weeks old) were randomly and equally allotted into three dietary treatment groups (four replicates per treatment, n = 36/treatment): (1) the control (CN) group—rabbits fed the basal diet; (2) CB group—rabbits fed the basal diet supplemented with 100 mg/kg diet Clostridium butyricum; and (3) BP group—rabbits fed the basal diet supplemented with 200 mg/kg diet BP cocktail, respectively, for 6 weeks. Compared with the CN diet, dietary CB and BP inclusion increased the average daily gain (ADG) and average daily feed intake (ADFI) and decreased the feed/gain (F/G) ratio of rabbits. Furthermore, CB increased the digestive enzyme activity (α-amylase and trypsin in the ileum); the chymotrypsin activity was also significantly increased in the duodenum and jejunum. Supplementation with CB significantly enhanced antioxidant capacity (SOD and GSH-Px) in the jejunum and ileum and reduced MDA levels. Additionally, rabbits fed CB had significantly elevated villus height (V) and (V/C) ratios but reduced crypt depth (C). Moreover, dietary CB supplementation markedly increased the ileal expression of tight junction proteins (occludin, ZO-1, and claudin-1) and increased secretory immunoglobulin A (sIgA) production. High-throughput sequencing indicated that the microbiota in the rabbit intestine was altered by CB and BP. Venn diagrams and heatmap plots revealed that the gut microbial community composition varied obviously among rabbits fed different diets. Specifically, CB increased the relative abundance of beneficial bacteria to maintain intestinal barrier homeostasis, whereas BP decreased the relative abundance of Gammaproteobacteria, which included a plenty of pathogenic bacteria.
Estratégia de geração de energia nuclear no Brasil: o caso da Eletronuclear

This article presents the results of a strategic analysis of Eletronuclear — Brazil's state-owned producer of nuclear energy — conducted from a systemic and integrative perspective. The analysis’ main objective was to answer the following question: Considering the 2001 energy crisis in Brazil and the concern with the risks of nucleo-electric energy, is the firm's current strategy adequate and sustainable? Towards this end, a case study was carried out that involved documental/telematic investigations, semi-structured interviews and participative observation. The article highlights inconsistencies between the firm's strategy, its burocratic organizational culture and political macro-environmental factors. Among the recommendations made as a result of the strategic analysis, it emphasizes the importance of reviewing the country's energetic model, especially, the nucleo-electric energy's tariff issue.
Transcriptomic Analysis of Hardened ‘Suli’ Pear (Pyrus bretschneideri Rehd) for Identification of Key Genes for Lignin Biosynthesis and Accumulation

Fruit hardening, one of the physiological disorders influencing the quality of pear, is usually accompanied by fruit lignification. Nonetheless, the mechanism by which lignin accumulates in hardened pear fruit is still unknown. Here, Transcriptome analysis of normal fruits (NFs) and hardened fruits (HFs) of ‘Suli’ pear (Pyrus bretschneideri Rehd) was used to examine the molecular mechanism of fruit hardening. We found that hardened fruits (HFs), especially those in the top region within 35–180 days after flowering (DAF), possessed a prominently higher lignin level than normal fruits (NFs). Subsequently, transcriptome sequencing of fruit at 35 DAF identified 4391 [HF shoulder region (HF_S) vs. NF top region (NF_T)], 3849 (HF_T vs. NF_T) and 408 (HF_T vs. HF_S) differentially expressed genes. Among them, we clarified 26 unigenes that encode 10 enzymes as candidate genes participating in lignin biosynthesis. Thus, high expression of the lignin biosynthetic gene impels lignin to accumulate in HFs. Some transcription factors were evaluated to link with lignin formation and subsequently analysed. In addition, the genes participating in flavonoid/proanthocyanidin biosynthesis dropped from the HF_T to the HF_S, suggesting that the flavonoid metabolic pathway was reduced to promote intermediate metabolites to be converted to the lignin biosynthetic pathway. To conclude, this study lays a solid theoretical foundation and provides reference data for investigating the mechanism by which lignin accumulates in hardened pear fruit.
Space-mapping techniques applied to the optimization of a safety isolating transformer

Space-mapping optimization techniques allow to allign low-fidelity and high-fidelity models in order to reduce the computational time and increase the accuracy of the solution. The main idea is to build an approximate model from the difference of response between both models. Therefore the optimization process is computed on the surrogate model. In this paper, some recent approaches of space-mapping techniques such as agressive-space-mapping, output-mapping and manifold-mapping algorithms are applied to optimize a safety insulating transformer. The electric, magnetic and thermal phenomena of the device are modeled by an analytical model and a 3D finite element model. It is considered as a benchmark for multi-level optimization to test different algorithms.
Lattice Constraints on the QCD Chiral Phase Transition at Finite Temperature and Baryon Density

The thermal restoration of chiral symmetry in QCD is known to proceed by an analytic crossover, which is widely expected to turn into a phase transition with a critical endpoint as the baryon density is increased. In the absence of a genuine solution to the sign problem of lattice QCD, simulations at zero and imaginary baryon chemical potential in a parameter space enlarged by a variable number of quark flavours and quark masses constitute a viable way to constrain the location of a possible non-analytic phase transition and its critical endpoint. In this article I review recent progress towards an understanding of the nature of the transition in the massless limit, and its critical temperature at zero density. Combined with increasingly detailed studies of the physical crossover region, current data bound a possible critical point to μB ≳ 3T.
Designing the c-gen lightweight direct drive generator for wave and tidal energy

The C-GEN is a novel permanent magnet generator aimed at reducing overall system mass in direct drive power takeoff applications. The design of a C-GEN generator requires the combination of electromagnetic, structural and thermal models. Models used in the development of design tools applicable to both rotary and linear C-GEN generators are described in this study. The design tool is verified with the experiment results obtained from a 15 kW prototype. A genetic optimisation algorithm is developed combining the analytical model with economical issues to search for most suitable designs for specific applications. Designs are presented using the optimisation design tool for two marine renewable applications: a wave device called Oyster developed by Aquamarine Power and a tidal current device developed by Scotrenewables.
A three-phase series-parallel compensated line-interactive UPS system with sinusoidal input current and sinusoidal output voltage

This paper deals with a three-phase line-interactive uninterruptible power supply system with active series-parallel power-line conditioning capability, which has sinusoidal output voltage regulation capability and unity power factor. In this system, two active power filter topologies are applied. The first one is a series active power filter which can compensate supply voltage harmonics and voltage unbalances as well. The other is a parallel active power filter which has the following main goals: reactive power compensation; load current harmonics suppression; and battery bank charging during normal power supply conditions. During input power failure, the parallel filter maintains uninterruptible power for critical loads, delivering power from the battery bank without power interruption, ensuring sinusoidal output voltages with constant RMS voltage value and low total harmonic distortion (THD). Therefore the proposed line-interactive UPS has low THD sinusoidal input currents with unity power factor. The control algorithm and mathematical models of the proposed three-phase line-interactive UPS system are described, and digital simulations are presented to verify the good dynamic responses of the versatile scheme.
The Multiple Roles of B Lymphocytes in the Onset and Treatment of Type 1 Diabetes: Interactions between B Lymphocytes and T Cells

Although type 1 diabetes is thought to be an organ-specific autoimmune disease, mediated by effective CD4+ and CD8+ T cells, it has recently become clear that B cells participate in the initiation and progress of this disease. Indeed, B cell deletion can prevent or reverse autoimmune diabetes in nonobese diabetic mice and even result in partially remaining β cell function in patients with new-onset type 1 diabetes. This review summarizes the dual role of B cells in this process not only of pathogenic effect but also of immunoregulatory function in type 1 diabetes. We focus on the impact that B cells have on regulating the activation, proliferation, and cytokine production of self-reactive T cells along with regulatory T cells, with the aim of providing a better understanding of the interactions between T and B cells in immunopathogenesis and improving the efficacy of interventions for clinical practice.
HYBRID WATERMARKING CITRA DIGITAL MENGGUNAKAN TEKNIK DWT-DCT DAN SVD

Sebagai salah satu teknik perlindungan data multimedia, watermarking telah banyak dikembangkan. Teknik watermarking dapat dilakukan pada domain transformasi, dengan menggabungkan metode Discrete Wavelet Transform (DWT) dan Discrete Cosine Transform (DCT). Watermarking pada citra digital harus memperhatikan tiga kriteria: security, robustness, dan imperceptibility. Dua kriteria terakhir merupakan hal yang paling sering bertentangan pada watermarking domain transformasi. Singular Value Decomposition (SVD) sebagai salah satu metode yang paling populer dari aplikasi aljabar linear telah banyak dimanfaatkan dalam pengolahan sinyal termasuk watermarking. Penggabungan DWT-DCT dan SVD ditujukan untuk mengatasi konflik di antara robustness dan imperceptibility. Nilai Peak Signal to Noise Ratio (PSNR) dan Normalized Cross Correlation (NC) yang diperoleh dari percobaan menyatakan bahwa skema hybrid watermarking ini menghasilkan watermark yang tahan terhadap berbagai serangan, serta kualitas yang tinggi dari citra yang disisipi watermark. Hal ini menunjukkan bahwa konflik antara robustness dan imperceptibility yang muncul pada watermarking domain transformasi dapat diatasi. Kata kunci : Watermarking, DWT, DCT, SVD
Chaos dans les ventes de biens à la mode et implication pour le contrôle de gestion

Objective - This article aims at showing that management control should drop cybernetic control for some activities of good sales. Study design - Reviewing Sutherland's (1975) and Hofstede's (1978) articles, it seems that activities of good sales can be controlled by a cybernetic control, like program-planning-budgeting systems. If sales of fashion goods were linear, like Miller et al.'s (1993) model, their forecasting would be possible and useful. However, two other models show that these sales could be chaotic (Granovetter and Soong ; Nakayama and Nakamura, 2004). In these models, the sales of fashion goods could be unpredictable beyond short intervals. The presence of chaotic patterns in this type of sales was thus tested. Data and methods - The long time series of video game hardware sales, from the data base of the www.vgchartz. com Internet website, were used. To test the presence of non-linearity, Brock et al.'s (1996) test was used after having stationnarized and removed linear dependencies. Then, to test the presence of chaotic patterns in these sales, the Lyapunov largest exponent and the correlation dimension were estimated. Results - The Japanese sales of video game hardware are chaotic. Their predictability horizons are limited to 6-9 weeks. Conclusion - The presence of chaos and thus of limited predictability horizon call into question the possiblity to predict these sales for one year and, as a conclusion, the cybernetic control process, like program-planning-budgeting systems.
Health Care and the Demand for Quality

Developed countries are demanding more quality assurance activities from their health care sectors. Briefly reviews the history of quality assurance in the health care sector and the reasons for the renewed demand for quality assurance. Discusses recent developments in New Zealand and the United Kingdom. Forecasts that the demand for accountability and high standards will increase. Discusses the problems of resources and information needs, and the deficit of practical outcome measures.
Erebus: Explaining the Outputs of Data Streaming Queries

In data streaming, why-provenance can explain why a given outcome is observed but offers no help in understanding why an expected outcome is missing. Explaining missing answers has been addressed in DBMSs, but these solutions are not directly applicable to the streaming setting, because of the extra challenges posed by limited storage and by the unbounded nature of data streams. With our framework, Erebus , we tackle the unaddressed challenges behind explaining missing answers in streaming applications. Erebus allows users to define expectations about the results of a query, verifying at runtime if such expectations hold, and also providing explanations when expected and observed outcomes diverge (missing answers). To the best of our knowledge, Erebus is the first such solution in data streaming. Our thorough evaluation on real data shows that Erebus can explain the (missing) answers with small overheads, both in low- and higher-end devices, even when large portions of the processed data are part of such explanations.
Self-excited oscillations of flexible-channel flow with fixed upstream flux

Self-excited oscillations in a collapsible-tube flow driven by fixed upstream flux have been observed by numerical and laboratory experiments. In this thesis we attempt to understand the mechanism of onset of these oscillations by focusing on a reduced physical model. We consider flow in a finite-length planar channel, where a segment of one wall is replaced by a membrane under longitudinal tension. The upstream flux and downstream pressure are prescribed and an external linear pressure distribution is applied to the membrane such that the system admits uniform Poiseuille flow as a steady solution. We describe the system using a one-dimensional model that accounts for viscous and fluid inertial effects. We perform linear stability analysis and weakly nonlinear analysis on the one-dimensional model, the resulting predictions are tested against two-dimensional Navier–Stokes numerical simulation. When the membrane has similar length to the rigid segment of channel downstream of the membrane, we find that in a narrow parameter regime we consider “mode-2” oscillations (i.e. membrane displacements with two extrema) are largely independent of the downstream segment but are driven by divergent instabilities of two non-uniform steady configurations of the membrane. When the downstream segment is much longer than the membrane, our analysis reveals how instability is promoted by a 1:1 resonant interaction between two modes, with the resulting oscillations described by a fourth-order amplitude equation. This predicts the existence of saturated sawtooth oscillations, which we reproduce in full Navier–Stokes simulations of the same system. In this case, our analysis shows some agreements with experimental observations, namely that increasing the length of the downstream tube reduces the frequency of oscillations but has little effect on the conditions for onset. We also use linear stability analysis to show that steady highly-collapsed solutions, constructed by utilizing matched asymptotic expansions, are very unstable, which allows the possibility that they are a precursor to slamming motion whereby the membrane becomes transiently constricted very close to the opposite rigid wall before rapidly recovering.
Noise generated by flow through large butterfly valves

A large butterfly valve (1.37 m diam) was acoustically tested to measure the noise generated and propagating in both the upstream and downstream directions. The experimental investigation used wall mounted pressure transducers to measure the fluctuating component of the pipe static pressure upstream and downstream of the valve. Microphones upstream of the pipe inlet and located in a plenum were used to measure the noise radiated from the valve in the upstream direction. Comparison of the wall pressure downstream of the valve to a prediction were made. Reasonable agreement was obtained with the valve operating at a choked condition. The noise upstream of the valve is 30 dB less than that measured downstream.
Optimized pulse shapes for a resonator-induced phase gate

The resonator-induced phase gate is a multi-qubit controlled-phase gate for fixed-frequency superconducting qubits. Through off-resonant driving of a bus resonator, statically coupled qubits acquire a state-dependent phase. However, photon loss leads to dephasing during the gate, and any residual entanglement between the resonator and qubits after the gate leads to decoherence. Here we consider how to shape the drive pulse to minimize these unwanted effects. First, we review how the gate's entangling and dephasing rates depend on the system parameters and validate closed-form solutions against direct numerical solution of a master equation. Next, we propose spline pulse shapes that reduce residual qubit-bus entanglement, are robust to imprecise knowledge of the resonator shift, and can be shortened by using higher-degree polynomials. Finally, we present a procedure that optimizes over the subspace of pulses that leave the resonator unpopulated. This finds shaped drive pulses that further reduce the gate duration. Assuming realistic parameters, we exhibit shaped pulses that have the potential to realize ~212 ns spline pulse gates and ~120 ns optimized gates with ~6e-4 average gate infidelity. These examples do not represent fundamental limits of the gate and in principle even shorter gates may be achievable.
Using Critical Path Analysis (Cpa) in Place Marketing Process: a Methodological Approach in the Case of Rostock, Germany

The article awards the use of CPA as a methodological tool in Place Marketing implementation. Taking into account that Place Marketing is a strategic process based on ‘project’ meaning with particular actions in specific time horizon, the article proposed that CPΑ has the capacity to satisfy this hypothesis. For this reason, the article creates a hypothetical scenario of CPA in four phases, planning, programming, implementation and feedback, taking as a case study the city of Rostock in Germany. The analysis shows that CPA is an important tool for Place Marketing since Place Marketing implementation receives the character of ‘project’ in particular time horizon.
Validation and simulation of a decentralized intersection collision avoidance algorithm

In this paper an approach to a decentralized intersection management is presented which does not require much additional infrastructure at the intersection and which can operate in today's traffic so as to increase safety and to avoid congestion. Collision avoidance is ensured by using semaphore-based algorithms which allow only one vehicle to stay in a critical intersection region. Verification of the collision avoidance algorithm is done by high level Petri net based analysis that shows the correctness and security of the algorithm. Simulation results will prove the effects of the strategy.
Children's Changing Urban Lives: A Comparative New Zealand–Pacific Perspective

Pacific Island countries are undergoing processes of urbanization and globalization. This paper asks what these processes mean for children's lived realities and for urban planning in the Pacific. It reports on findings from a study undertaken with children aged 9-13 years in schools in Suva, Fiji, and Dunedin, New Zealand, that looked at children's travel, safety, neighbourhood relationships and how they use their local urban environment. This research presents information and understandings that can inform the development of urban areas and enable planners to respond more effectively to meeting the needs of children living in a rapidly urbanizing Pacific.