Miracle-dz/UniFAR-FTUs huggingface dataset:
Economics and Business Quarterly Reviews

We are currently living in an extremely volatile business environment emanating from accelerated changes in technology. This condition compels firms’ Top managements to strategically think so as to adapt to such environmental shifts. In consequence, strategies built towards their internationalization goal are essential for their subsistence. They include e-commerce strategies and relevant dynamic capabilities. Being thus enlightened, the study endeavors to conceptualize E-commerce strategy as a tool for Internationalization Performance. However, a stumbling block was identified. It pertained to the lack of clear and exhaustive definitions of the main constructs, and to the scantiness and inadequacy of theories essential to their underpinning. The study also includes a comprehensive conceptual review touching the subjects of E-commerce strategy, Firm’s Dynamic Capabilities, and Internationalization Performance and furthermore included relevant empirical studies. The major constructs were grounded on theories like UTAUT, the theory of flow, the institutional theory, the resourced-based view and the Uppsala model. As a result of this extensive study, a case for a new theoretical framework was presented, designed and thoroughly explained. Future studies should concentrate on offering thorough definitions of e-commerce strategy and internationalization performance. Additionally, it is vital such research be conducted in a variety of contexts.
GREEN INNOVATION STRATEGY AS ANTECEDENT OF PERFORMANCE SUSTAINABILITY AMONG ISO 14001 CERTIFIED MANUFACTURING FIRMS IN KENYA: DOES COMPETITIVE ADVANTAGE PLAY A MEDIATING ROLE?

The quest for performance sustainability among manufacturing firms have been on rise. This has been prompted by decline in performance among manufacturing firms which has been escalated by increased environmental degradation and unmanaged waste. The paradox on whether attaining ISO 14001 certification among manufacturing firms has improved performance sustainability of firms is still unresolved in Kenya. This study sought to investigate whether competitive advantage had a mediating effect on the relationship between green innovation strategy and performance sustainability in ISO 14001 certified manufacturing firms in Kenya. The study was guided by triple bottom line theory, green business model innovation and resource-based view theory. The positivism philosophy was adopted in the study where descriptive and explanatory research design was utilized . Census of 60 ISO 14001 certified manufacturing firms were involved in the study which involved 218 respondents drawn from the heads of finance, ICT, operations, marketing and HR departments. Semi structured questionnaires were used to collect data which was analysed using regression model. The results indicated that competitive advantage had partial mediating effect on the relationship between green innovation strategy and performance sustainability of ISO 14001 certified manufacturing firms in Kenya. It was recommended to the management to ensure they automate most of their processes, ensure there is green department and train their employees to ensure they utilize their tacit knowledge to address issues of sustainability in their firms. To government, it should come up with flexible regulatory framework to guide firms going green.
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: Modeling the interactions between a reinsurer and several insurers, or between a central management branch (CB) and several subsidiary business branches, or between a coalition and its members, are fascinating problems, which suggest many interesting questions. Beyond two dimensions, one cannot expect exact answers. Occasionally, reductions to one dimension or heuristic simpliﬁcations yield explicit approximations, which may be useful for getting qualitative insights. In this paper, we study two such problems: the ruin problem for a two-dimensional CB network under a new mathematical model, and the problem of valuation of two-dimensional CB networks by optimal dividends. A common thread between these two problems is that the one dimensional reduction exploits the concept of invariant cones. Perhaps the most important contribution of the paper is the questions it raises; for that reason, we have found it useful to complement the particular examples solved by providing one possible formalization of the concept of a multi-dimensional risk network, which seems to us an appropriate umbrella for the kind of questions raised here.
Wireless sensor network programming: an introduction Book of abstracts

Towards developing protocols and applications for sensor networks, one of the difficult tasks is to perform measurements in order to evaluate networks performance in reality. Due to high sensitivity and limited resources of sensor nodes, radio communication can be influenced by many environmental parameters which respectively complicates preparing the radio propagation models. In order to carry out continuous and automated measurements, employing toy cars moving on special tracks in a closed loop is proposed. Using this approach saves time and energy in the process of radio measurements and also the experiment can be repeated over and over with minimum effort.
RSSF: Towards Real-Time Decoding of LoRa Packets without Prior Knowledge of their Spreading Factor

The selection of the spreading factor (SF) has important implications on the radio on-time, energy consumption, achievable data rate, and communication range of LoRa devices. In practical applications, LoRa packets can only be exchanged when the SF between transmitter and receiver matches. To ensure that this is the case, current approaches either statically hard-code the SF used to communicate between two devices, or negotiate which SF to use through handshaking mechanisms. Unfortunately, statically assigning the SF may lead to sub-optimal performance, and changing the assignment at runtime through a negotiation process incurs a significant overhead in terms of both latency and energy consumption. In this paper, we propose RSSF, a scheme that allows an off-the-shelf LoRa device to receive and decode a packet without prior knowledge of the SF used by the transmitter. RSSF leverages the observation that the SF with which a packet was sent can be inferred by analyzing the received signal strength (RSS) samples captured while receiving the first preamble symbols, and by characterizing their periodicity. In real-world systems, however, the waveform obtained by sampling the RSS during the reception of the first preamble symbols contains several spikes due to the receiver's DC offset cancellation, which makes it difficult to accurately identify periods. We show that this problem can be solved by letting an off-the-shelf LoRa receiver sample the RSS on a frequency that is shifted by half of the bandwidth from the original frequency at which the packet was transmitted. We then implement a lightweight algorithm that determines the SF by partitioning the RSS samples into sliding windows of different size (corresponding to each possible SF) and by measuring the zero-crossing intervals for each window size. We evaluate RSSF's performance experimentally using both software-defined radios and off-the-shelf LoRa nodes, showing that RSSF can accurately determine the SF within the first 5 preamble symbols.
Assessing the Institutions-Innovation Channel within the Inequality-Growth Nexus

The present paper assesses the interactions between innovation and economic institutions within the context of the inequality-growth nexus. By carrying out fixed effects estimations on a cross-country panel, we find that both institutional quality and innovations improve economic growth at the expense of income equality. We show that the marginal effects of innovations on growth and inequality diminish as institutions increase in quality, and the effects of institutions can be influenced by level of innovations. This indicates that while institutions and innovations can be inequality-inducing, their interactions dampen the effect. Similarly, both variables positively affect growth but their interactions are negative. More importantly, we note a series of transitory interactive effects on growth which show property right protection as the principal growth-enhancing institutions in earlier stages of development, and broader institutional quality in later stages. These results are verified and reinforced by GMM and IV estimations, the latter of which uses judicial independence as an instrument, as well as additional robustness tests.
New Theory and Faster Computations for Subspace-Based Sensitivity Map Estimation in Multichannel MRI

Sensitivity map estimation is important in many multichannel MRI applications. Subspace-based sensitivity map estimation methods like ESPIRiT are popular and perform well, though can be computationally expensive and their theoretical principles can be nontrivial to understand. In the first part of this work, we present a novel theoretical derivation of subspace-based sensitivity map estimation based on a linear-predictability/structured low-rank modeling perspective. This results in an estimation approach that is equivalent to ESPIRiT, but with distinct theory that may be more intuitive for some readers. In the second part of this work, we propose and evaluate a set of computational acceleration approaches (collectively known as PISCO) that can enable substantial improvements in computation time (up to $\sim 100\times $ in the examples we show) and memory for subspace-based sensitivity map estimation.
Daurian pika (

Colonial lagomorphs warn conspecifics of potential danger with alarm calls encoding information about attributes of presumptive predators as well as the caller. In this study, we show that alarm calls of Daurian pikas, Ochotona dauurica (Pallas, 1776), encode information about caller identity. We recorded the alarm calls produced toward a surrogate predator (researcher), slowly moving (0.5–1 km/h) between densely distributed colonies. The alarm calls of most (32 of the 35) callers started in the ultrasonic range at 22.41 kHz on average and rapidly decreased to 3.88 kHz on average at call end. Call duration was very short (0.057 s on average). The accuracy of classifying alarm calls to correct callers with discriminant function analysis (DFA) was 93.71% for the manually measured set of 12 acoustic variables and 95.43% for the semiautomatically measured set of 12 acoustic variables; in both cases exceeding the level of chance (17.28% or 17.33%, respectively). Nonlinear vocal phenomena (biphonations) only were detected in one individual. We discuss the relationship between vocal traits, individuality, vocal production mechanisms, and functions, of pika alarm calls. We propose a potential divergence of alarm calls in Asian pikas to high-frequency whistles ( > 20 kHz in Daurian pikas) and in American pikas to low-frequency emissions (0.4–1.3 kHz in Ochotona princeps ) during the evolutionary radiation of pikas at the center of the origin of lagomorphs in East Asia and their subsequent geographic dispersal.
A sea ice climate switch mechanism for the 100‐kyr glacial cycles

A box model of the ocean-atmosphere-sea ice-land ice climate system is used to study a novel mechanism for self-sustained oscillations of the climate system on a time scale of 100,000 years, without external forcing. The oscillation in land ice volume has the familiar sawtooth shape of climate proxy records. The most novel aspect of the climate oscillations analyzed here is the crucial role played by the sea ice. The sea ice acts as a “switch” of the climate system, switching it from a growing land glaciers mode to a retreating land glaciers mode and shaping the oscillation's sawtooth structure. A simple explanation of the 100-kyr timescale is formulated on the basis of the mechanism seen in the model. Finally, rapid sea ice changes such as those seen in our model, and their drastic effects on the climate system, may provide an explanation to some of the rapid climate changes observed to be a part of the variability at all timescales in the paleorecord.
A ﬂow based formulation and a reinforcement learning based strategic oscillation for cross-dock door assignment

Cross-dock door assignment is a critical warehouse optimization problem in supply chain management. It involves assigning incoming trucks to inbound doors and outgoing trucks to outbound doors to minimize the total pallet-handling cost inside the warehouse. This study investigates a ﬂow based formulation and a reinforcement learning based heuristic approach to solve this problem. The ﬂow based formulation relies on the ﬂow of goods. It is signiﬁcantly smaller than the existing mixed integer programming formulations in the literature. The proposed heuristic algorithm relies on a Q-learning reinforced procedure to guide the search toward promising areas, and a strategic oscillation method to adaptively explore feasible and infeasible search spaces. It also relies on an improved tabu strategy using attributive and explicit memories. The formulation and proposed heuristic algorithm were tested on two sets of benchmark instances widely used in the literature and compared with several state-of-the-art algorithms. The computational results demonstrated the high competitiveness of the proposed methods in solution quality and computation time. In particular, the ﬂow based formulation can optimally solve more and larger instances and produce better lower and upper bounds than the existing mixed integer programming formulations in the literature. The heuristic approach improved the best solutions (new upper bounds) for 43 of the 99 tested instances while matching the other best-known solutions, except in two cases. The key components of the algorithm were analyzed to justify the algorithm design. The code of the proposed algorithm will be publicly available.
Stress, faulting, fracturing and seismicity: the legacy of Ernest Masson Anderson

For as long as geologists have looked at deformed rocks, they have grappled to understand the mechanical origins of deformation. Natural systems are inherently complex so that, for many, purely geometric and kinematic approaches have sufficed. However, we know that stress within the brittle upper crust controls the nucleation, growth and reactivation of faults and fractures, induces seismic activity, affects the transport of magma and modulates structural permeability, thereby influencing the redistribution of hydrothermal and hydrocarbon fluids. An endeavour of structural geology and seismotectonics is therefore to reconstruct states of stress and their evolution over geological time from observations of the final products of rock deformation. Experimentalists endeavour to recreate structures observed in nature under controlled stress conditions. Earth scientists studying earthquakes attempt to monitor or deduce stress changes in the Earth as it actively deforms. All are building upon the pioneering researches and concepts of Ernest Masson Anderson dating back to the start of the 20th century. His insights, encapsulated in a small number of research papers and in the book The Dynamics of Faulting and Dyke Formation with Applications to Britain, continue to influence investigations in structural geology, seismology, rock mechanics, processes of hydrothermal mineralization and physical volcanology. This volume celebrates this legacy.
Protolith Ages of Metamorphic Rocks of the Zhangbaling Group along the Southern Segment of the Tan-Lu Fault Zone and Their Tectonic Implications

The greenschist facies Zhangbaling Group is exposed along the Tan-Lu Fault Zone at the eastern margin of the Dabie orogenic belt. Its protolith ages and reason for the deformation and metamorphism remain unknown. Eight meta-volcanic rock samples were collected for LA-ICP-MS U-Pb dating. The results indicate their protolith ages of 748 ~ 750 Ma,i. e. the Nanhua period of the middle Neo-proterozoic. They belong to the lower cover of the Yangtze Plate rather than the basement rocks as proposed before. On the bases of their deformation and metamorphism,previous muscovite40 Ar /39 Ar dating results as well as comparison with the Dabie orogenic belt,it is proposed that the deformation and metamorphism of the Zhangbaling Group in the southwestern margin of the orogenic resulted from the orogenic crust subduction and exhumation,and those along the Tan-Lu Fault Zone at the eastern margin were caused by sinistral shearing of the fault zone. The understanding offers important evidence for the origin of the Tan-Lu Fault Zone during collision between the North China and Yangtze plates,and support the collision-related origin mdoel of intralplate transform faulting or an oblique collision boundary.
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Heterodyne techniques have been used to experimentally determine, for the first time, the frequencies for nineteen laser emissions ranging from 264 to 984 GHz. These laser emissions were generated by optically pumping either CH 3 CN, CD 3 CN, 13 CH 3 I, CD 3 I, or 13 CD 3 I with a CO 2 laser. This includes the newly discovered 566.325-μ m laser emission from optically pumped 13 CD 3 I. The fractional uncertainties with which these frequencies were experimentally determined, up to ± 5 × 10 − 7 , were of sufficient accuracy to confirm or revise seven previously proposed far-infrared laser assignments.
Explicit Time Deficit in Schizophrenia: Systematic Review and Explicit Time Deficit in Schizophrenia: Systematic Review and Meta-Analysis Indicate It Is Primary and Not Domain Specific. Meta-Analysis Indicate It Is Primary and Not Domain Specific.

published from 1956 to 2015, which comprised 747 SZ individuals and 808 HC, were included. Results indicate that SZ individuals are less accurate than HC in estimating time duration across a wide range of tasks. Subgroup analyses showed that the fundamental timing deficit in SZ is independent from the length of the to-be-timed duration (automatic and cognitively controlled timing) and from methods of stimuli estimation (perceptual and motor timing). Thus, time perception per se is disturbed in SZ (not just task-specific timing processes) and this perturbation is independent from more generalized cognitive impairments. Behavioral evidence of disturbed automatic timing should be more thoroughly investigated with the aim of defining it as a cognitive phenotype for more homogeneous diagnostic subgrouping.
Whole exome and whole genome sequencing

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Whole Exome and Whole Genome Sequencing

PLEASE NOTE: Contracts exclude from coverage, among other things, services or procedures that are considered investigational or cosmetic. Providers may bill members for services or procedures that are considered investigational or cosmetic. Providers are encouraged to inform members before rendering such services that the members are likely to be financially responsible for the cost of these services.
Motivation, Emotion, and Personality: Steps to an Evolutionary Synthesis

In this chapter, I present an emerging evolutionary framework for motivation, emotion, and personality. The framework is composed of three “layers”, each building on the previous ones: (1) a theory of motivational systems ; (2) an extended coordination approach to emotion, which describes a hierarchy of coordination mechanisms, from emotions to motivational systems to moods; and (3) the General Architecture of Motivation (GAM)—an abstract model of the mechanisms that underlie motivation and their functional relations, designed to serve as a conceptual foundation for models of human and animal personality. As I describe the main features and assumptions of the framework, I compare and contrast it with Carol Dweck’s alternative proposal for unification, which is similar in scope and direction but based on partially different premises. A coherent, realistic model of motivation is an invaluable asset, not only in basic research but also in clinical psychology and psychotherapy. I believe that an evolutionary synthesis is within reach, and hope that the approach presented in this chapter will foster integration across disciplines and research traditions.
Pengaruh Risiko Luar Negeri Terhadap Pasar Saham Indonesia Menggunakan Analisis ARDL

This research aims to explore the impact of foreign risk factors, including geopolitical risk index, Federal Reserve interest rate policy, exchange rate of rupiah to dollar, S&P 500 index, and world oil price on the stock market in Indonesia, both in aggregate and sectoral levels. In order to analyze the dynamics of long-term and short-term relationships, this research uses the Autoregressive-Distributed Lag (ARDL) method. Based on empirical results, there is simultaneous cointegration between independent variables with IHSG, consumer non-cyclical sector index, energy sector index, industrial sector index, and financial sector index. In the long term, geopolitical risk affects IHSG and the energy sector; while the US stock market, exchange rate of rupiah to dollar, and Federal Reserve interest rate policy affect the financial sector. In the short term, the geopolitical risk index, Federal Reserve interest rate policy, exchange rate of rupiah to dollar, S&P 500 index, and world oil price have varying impacts on IHSG and sectoral indices. This research is expected to contribute to the financial literature and support the making of more effective policies.
Characteristics of Natural and Acid-Activated Clay from Hatu Village, Mollucas Province: FTIR,

Research on the chemical and physical characteristics of natural and acid-activated clay from Hatu Village used FTIR, XRD, XRF, SEM-EDX, TEM, and BET surface area analyzer instruments. The natural clay was activated with 0.25 M sulfuric acid for 3 hours using the reflux method, then calcined with 700 Watt microwave radiation for 10 minutes. Overall, FTIR data show tetrahedral and octahedral functional groups that create clay minerals. There was a decrease in absorption peak intensity at 1635; 686; and 470 cm -1 due to acid's influence, which dissolves cations in the octahedral and interlayer clay. The XRD analysis shows the Hatu natural clay contains Montmorillonite, alumina, kaolinite, quartz, and illite minerals. Broadening and decreasing the intensity of diffraction peaks of Montmorillonite due to treatment by acid and calcination. SEM images of natural clay before and after activation-calcination show the morphology of porous and layered material, while the mapping of the surface of natural clay shows irregular and rough material topography. The EDX spectra showed four elements with the most extensive composition: O, Si, Al, and Fe. XRF data confirmed three components that have the highest mass percent, namely SiO 2 , Al 2 O 3 , and Fe 2 O 3 . Dealumination of alumina content of 0.95% occurs due to activation by sulfuric acid along with calcination. TEM images clearly show the multilayered silicate materials. The results of the adsorption-desorption analysis of nitrogen on acid-activated natural clay showed an increase in the specific surface area and total pore volume due to the activation. The characteristics of natural clay from Hatu Village are similar to natural clay from other areas in Indonesia as previously reported by researchers. Activation by sulfuric acid increases the chemical properties of the clay.