bluuebunny/crossref_metadata_2025 huggingface dataset:
Dynamic Resource Allocation on Multi-Category Two-Sided Platforms
Authors: Li Hui , Shen Qiaowei , Bart Yakov
Published: July 2020

Platform businesses are typically resource-intensive and must scale up their business quickly in the early stage to compete successfully against fast-emerging rivals. We study a critical question faced by such firms in the novel context of multicategory two-sided platforms: how to optimally make investment decisions across two sides, multiple categories, and different time periods to achieve fast and sustainable growth. We first develop a two-category two-period theoretical model and propose optimal resource allocation strategies that account for heterogeneous within-category direct and indirect network effects and cross-category interdependence. We find that the proposed strategy shares the spirit of the allocation rules for multiproduct nonplatform firms and single-product platform firms, yet it does not amount to a simple combination of the existing rules. Interestingly, the business model that platforms adopt crucially determines the optimal strategy. Platforms that charge by user should adopt a “reinforcing” rule for both within- and cross-category allocations by allocating more resources toward the stronger growth driver. Platforms that charge by transaction should also adopt the reinforcing rule for within-category allocation, but follow a “compensatory” rule for cross-category and intertemporal allocations by allocating more resources toward the weaker growth driver. We use data from the daily deals industry to empirically identify the network effects, propose alternative allocation strategies stemming from our theoretical findings, and use simulations to show the benefits of these strategies. For instance, we show that reallocating 10% of the average observed investment from Fitness to Beauty can increase profits by up to 15.5% for some cities.

This paper was accepted by Matthew Shum, marketing.
How Digital Word-of-Mouth Affects Consumer Decision Making: Evidence from Doctor Appointment Booking
Authors: Shukla Aishwarya Deep , Gao Guodong (Gordon) , Agarwal Ritu
Published: July 2020

We use detailed clickstream data on online word-of-mouth (WOM) to uncover mechanisms underlying its influence on consumer decision making. A feature launch on a major doctor appointment booking platform allows us to examine the effects of online WOM on three dimensions of a consumer’s choice process: the consideration set size, the time taken to consider alternatives (web session duration), and the geographic dispersion of the choices considered. Results indicate that the effects of WOM on decision-making processes are not monotonic but rather are contingent on the abundance of WOM (number of rated doctors) in a market. When the abundance of WOM is high, the introduction of WOM makes patients consider fewer doctors, browse for a shorter duration, and focus on doctors that are geographically more proximate. In contrast, when the abundance of WOM is low, the introduction of WOM makes patients consider more doctors, browse for longer duration, and consider doctors that are geographically more dispersed. We also find that WOM can lead to a cannibalization effect: when ratings are published, the highly rated doctors reap the benefits (in the form of increased demand) at the expense of unrated doctors. Our study contributes to the extant literature on online WOM by providing new insights into how WOM influences consumer decision making and by examining this question at a more granular level than prior work.

This paper was accepted by Anandhi Bharadwaj, information systems.
Interior-Point-Based Online Stochastic Bin Packing
Authors: Gupta Varun , Radovanović Ana
Published: July 2020

A New Algorithm for Static Bin Packing
Factors Influencing Ore Recovery and Unplanned Dilution in Sublevel Open Stopes. Case study of Shaft No.4 at Konkola Mine, Zambia
Authors: Ngoma Kalunga , Mutambo Victor
Published: July 2020

Konkola Copper Mine’s Number 4 Shaft is a trackless underground mine applying sublevel open stoping (SLOS) mining method. Number 4 shaft wants to increase ore production from 1 million metric tonnes per annum to 3 million metric tonnes per annum in the next 5 years but ore recovery is 70% or less and dilution is 20% or more. In order to achieve the desired annual target of 3 million metric tonnes ore recovery should be increased from70% to (≥85%) and dilution should be reduced from 20% to (≤10%). Despite being one of the most used underground mining methods, the current SLOS has a challenge of high unplanned dilution. This paper reviews and evaluates parameters that influence recovery and unplanned dilution in sublevel open stopes and applies numerical modelling using PHASE2 software to establish the influence of stress environment on unplanned dilution at the mine. The input parameters for numerical modelling were: Uniaxial Compressive strength (UCS=170MPa), Geological Strength Index (GSI) =55, Young’s Modulus (E) =26000MPa, Hoek-Brown constant (s) =0.0067, Hoek-Brown constant (mi) =20 and Poisson ratio (v) =0.2 major principal stress (σ1) 39MPa, intermediate stress (σ2= 18MPa) and the minor principal stress (σ3= 15MPa). Results obtained from review of mine production records indicate that the main factors that influence unplanned dilution at Number 4 shaft are: poor ground conditions, lack of compliance to recommended stope designs, poor drilling and blasting practices, presence of geological discontinuities, adopted mining sequence of extracting high ore grade first that leads to creation of high stress blocks within the orebody and delayed mucking practice. Results obtained from PHASE 2D model indicate that total displacement of 90mm is recorded in the hangingwall hence influencing stope wall instability that leads to increased unplanned dilution. After stope extraction, it was observed that 60MPa of induced stress developed at the top right corner and 45-50 MPa at the crown pillar and right bottom corner of the stope.
Changing Land use Pattern in the Raniganj Coal Belt and Its Sustainable Management: A Case Study of Mangalpur Opencast Colliery
Authors: Dhar Sarbendu Bikash , Dutta Manisha
Published: July 2020

Opencast coal mining has an immense impact on the changing land use and land cover pattern of any colliery belt. This is the main thrust of the present study. Land-use practices, like built-up area, cropland, vegetation, water body, bare land, mining area etc. have been identified. The pattern of changing land use and land cover in the Mangalpur private opencast colliery has been analysed. At the same time, entire Raniganj block has been studied with the help of secondary data. SOI Topographic map 73M/2 has been used to show the situation of collieries both underground and opencast of Raniganj block in 1967. The land use and land cover changes in the Raniganj block have been analysed for 12 years i.e., from the year 2007 to 2019 using remote sensing techniques. The changes have been detected at 6 year time gap. For that purpose Landsat-5 TM, Landsat-8 OLI/ TIRS satellite images are used. Apart from that, the quantification of spatio-temporal dynamics of land use and land cover patterns are also examined by supervised image classification. The study exposed that extend of the mining area and the bare land area has increased in 2019 compared to 2007. On the contrary, cropland and vegetation cover have decreased significantly during the period under study. To achieve sustainable use of land in the study area, some management procedures have been discussed at the end
Sustainable Coal Mining and Electricity Generation: With Special Reference to Dahanu Thermal Power Station
Authors: Tajane Sugat , Kamthan Manika
Published: July 2020

Mining Industry is often tagged as a polluting sector since it involves since it involves extensive resource exploitation by unsustainable methods. The techniques involved in mining cause tremendous destruction to the environment and health of people living in nearby areas. There is a growing consensus on sustainable and efficient mineral development which will avoid the clash between economic and environmental interests. Deployment of advanced and sustainable technological solutions in the entire mining process, fixing the gaps in its regulatory mechanisms and learning from the successes of specific domestic and international mining operations are certain solutions that have the capacity this sector more productive. The paper provides insights into the problems of mining sector and possible solutions to overcome these problems. It also provides examples of certain best practices adopted by mining corporations for sustainable coal mining. The paper also explores various methods and technologies which can be adopted by Thermal Power Plants to reduce their emissions and simultaneously conserve environment. An empirical study of Dahanu Thermal Power Station located in state of Maharashtra of India has been undertaken for this purpose to study the modern technologies adopted by them to lower their emission levels.
Study on the Effect of Mining Activities on Floral Diversity in Western Rajasthan
Authors: Panwar Rohitashav , Jaipal B.R.
Published: July 2020

The mining is a dangerous activity produced by humans for giving indispensable quality and security to their expectation for everyday comforts. The mining in the concerned zones gives crude materials as gravels, crusher and stones etc. for development of roads, railroad lines and other infrastructures. From the most recent couple of years the mining rate has expanded a few times. It brings about the loss of biodiversity of both vegetation and fauna and land form changes of the concerned zone. After the mining activity in any territory is finished, the indication of same lean back for quite a long time and might be until the end of time. It brings about formation of such huge numbers of environmental issues and health risks. During the investigation, effects of mining over plant biodiversity at Chaukri kalan have been assessed. At the investigation site, a sum of 81 diverse plant types of herbs, shrubs and trees were identified. The whole site is viewed as biodiversity rich, which have danger of loss because of mining and its related exercises.
Latch-related nipple pain in breastfeeding women: the impact on breastfeeding outcomes
Authors: Bourdillon Katie , McCausland Tom , Jones Stephanie
Published: July 2020

Background

Nipple pain is a common issue experienced by breastfeeding mothers and if not resolved, can contribute to early cessation of breastfeeding.

Aims

To investigate mothers experiences of nipple pain, the solutions used to manage their issues, and the perceived impact on breastfeeding outcomes with particular focus on latch-related nipple pain with no clear underlying cause (LRNP).

Methods

Data was collected via an online survey of UK-based women (n=1084).

Findings

LRNP was the most common issue as experienced by 52% of mothers surveyed. Various solutions were utilised to try to manage LRNP. Use of Highly Purified Anhydrous (HPA) Lanolin to manage LRNP was associated with a substantial increase in breastfeeding duration (average 33.2 weeks compared to 26.5 weeks for those who didn't report using HPA Lanolin).

Discussion

HPA Lanolin is a key solution used by mothers in the management of latch-related nipple pain and one which they perceive as having a significant positive effect on the physical symptoms and pain associated with nipple trauma. Use of HPA Lanolin was also associated with a substantial increase in breastfeeding duration which ultimately aids women in meeting their personal breastfeeding goals and improves overall breastfeeding rates.
A review of the law surrounding female genital mutilation protection orders
Authors: Home Joseph , Rowland Andrew , Gerry Felicity , Proudman Charlotte , Walton Kimberley
Published: July 2020

Performing female genital mutilation (FGM) is prohibited within the UK by the FGM Act of 2003. A mandatory reporting duty for FGM requires regulated health and social care professionals and teachers in England and Wales to report known cases of FGM in under 18-year-olds to the police. An application to the court for an FGM protection order (FGMPO) can be made to keep individual women and girls safe from FGM. This paper reveals the significant disconnect between the number of FGMPO applications and known recorded cases of FGM. The introduction of FGMPOs requires critical exploration as there is insufficient evidence to show that FGMPOs are effective in protecting women and girls from FGM. It is therefore unclear what impact, if any, FGMPOs are having upon the protection of women and girls at risk of FGM. The barriers to the implementation of FGMPOs and possible solutions are discussed.
Strategies to reduce the environmental impact of anaesthesia
Authors: Pierce JMT , McGain F
Published: July 2020

Is there scope for anaesthesia to turn a green corner?
Rainwater harvesting and coal tar soap
Authors: Slop Mr
Published: July 2020

Our resident scribe ponders on sustainable solutions in and out of the hospital.
A Systematic Review and Meta-Analysis Examining the Effect of Exercise on Individuals With Intellectual Disability
Authors: St. John Laura , Borschneck Gregory , Cairney John
Published: July 2020

This study examined the efficacy of exercise programs for individuals with intellectual disability (ID) based on experimental designs. Multiple databases were searched from inception up until March 2019. Randomized control trials were eligible for inclusion if they (a) included a population with ID; (b) used an exercise intervention; and (c) included performance, cardiovascular health, and/or psychological measures. All data were pooled using random effects models of standardized mean differences. The review included 18 studies which represented data from 799 individuals with ID. The largest effect was seen in relation to anxiety and depression symptoms (SMD = −3.07). This study represented the first comprehensive analysis on this topic area and illustrated that exercise can play an important therapeutic role for this population.
Single-source formulation for the analysis of electromagnetic penetrable objects
Authors: Ameri Hoda , Faraji-Dana Reza
Published: July 2020

Modified global surface impedance (MGSI) formulation, a fast and efficient single-source integral equation for analyzing penetrable objects including plasmonic circuits and dielectric periodic structures, is proposed. Using the equivalence principle, a single-source formulation for the exterior region of the desired problem is constructed. Then the assumed equivalent source (surface electric current) is written as the sum of two surface electric currents, one related to the other based on the global surface impedance (GSI) model. Thus, the conventional surface integral equation (SIE) for the exterior problem will be modified by this new single-source formulation. The interior problem is also formulated using the GSI model resulting in our proposed MGSI formulation. MGSI eliminates the need for equivalent magnetic current in the SIE formulation. It also helps one to formulate the interior and exterior problems independently. Moreover, in our approach material property does not affect the problem convergence behavior, while the convergence behavior of the conventional SIE deteriorates for a plasmonic structure and also for a dielectric object with high contrast to its surrounding medium. The accuracy and efficiency of the proposed formulation are demonstrated by comparing its results with the conventional SIE in solving several two-dimensional examples.
100 kHz PLEET velocimetry in a Mach-6 Ludwieg tube
Authors: Hsu Paul S. , Jiang Naibo , Jewell Joseph S. , Felver Josef J. , Borg Matthew , Kimmel Roger , Roy Sukesh
Published: July 2020

Picosecond laser electronic-excitation tagging (PLEET) was demonstrated in a Mach-6 Ludwieg tube at a repetition rate of 100 kHz using a 1064 nm, 100 ps burst-mode laser. The system performance of high-speed velocimetry in unseeded air and nitrogen Mach-6 flows at a static pressure in the range of 5–20 torr were evaluated. Based on time-resolved freestream flow measurements and computational fluid dynamics (CFD) calculations, we concluded that the measurement uncertainty of 100 kHz PLEET measurement for Mach 6 freestream flow condition is ∼1%. The measured velocity profiles with a cone-model agreed well with the CFD computations upstream and downstream of the shockwave; downstream of the shockwave the discrepancy between the CFD and experimental measurement could be attributed to a slight nonzero angle of attack (AoA) or flow unsteadiness. Our results show the potential of utilizing 100 kHz PLEET velocimetry for understanding real-time dynamics of turbulent hypersonic flows and provide the capability of collecting sufficient data across fewer tests in large hypersonic ground test facilities.
Analysis on real-time phase delay in an interferometric FBG sensor array using polarization switching and the PGC hybrid processing method
Authors: Ma Lina , Yu Yi , Wang Jun , Chen Yu , Hu Yongming , Xiong Shuidong
Published: July 2020

The polarization switching and phase generated carrier (PS-PGC) hybrid method is typically adopted to control signal fading induced by fiber birefringence and to precisely demodulate signals in interferometric fiber Bragg grating (FBG) sensor arrays. Unlike simple PGC demodulation, the real-time phase delay between the detected interference and the PGC carrier in the hybrid method has more adverse effects as both demodulation accuracy and background noise can be deteriorated, which may invalidate the polarization switching (PS) method. Aiming at this issue, the real-time phase delay and its compensation method were analyzed in detail in this paper. The features of the real-time phase delay in the PS-PGC hybrid method were summarized and the differences among polarization channels were investigated. Theoretical analysis indicated that the real-time phase delay mainly affected the interference complex synthesis (ICS) procedure, ultimately bringing about errors in the PS-PGC algorithm. The method for demodulating the real-time phase delay from sampled interference was presented, which provided the key compensation parameter. Experimental results showed that the compensation method could greatly improve the stability of the demodulated signal and suppress the sensor background phase noise. The amplitude of the demodulated signal was stabilized with a fluctuation less than ± 0.75dB and a noise suppression of 5dB. The acceptable compensation error was also analyzed.
New design and calibration method for a tunable single-grating spatial heterodyne spectrometer
Authors: Németh Gergely , Pekker Áron
Published: July 2020

In our paper, we present a new design for a single-grating tunable spatial heterodyne spectrometer (SHS). Our design simplifies the change of the center wavelength (Littrow wavelength) thus one can quickly tune the system to an arbitrary spectral range. Furthermore, we introduce a new calibration method that provides superior calibration accuracy over the generally used formulas involving small angle approximations. We also present considerations about the general usability of the SHS technique in broadband measurements and propose different strategies to improve the signal-to-noise ratio.
Visible light positioning (VLP) system using low-cost organic photovoltaic cell (OPVC) for low illumination environments
Authors: Hong Chong-You , Wu Yu-Chun , Lin Yu-Hsiang , Liu Yang , Chow Chi-Wai , Meng Hsin-Fei , Chang Yi-Ming , Yeh Chien-Hung , Hsu Ke-Ling , Song Shao-Hua
Published: July 2020

We propose and demonstrate a received-signal-strength (RSS) based visible light positioning (VLP) system using a low-cost organic photovoltaic cell (OPVC) receiver (Rx). The OPVC is a passive device without the need of external power supply. It could detect VLC signal and harvest energy. Our developed OPVC has a high power conversion efficiency (PCE) of 9.8%. The VLP system can be operated at a low illumination of 130 lux. The regression machine learning (ML) algorithm is used to enhance the positioning accuracy.
Lasing in liquid crystal systems with a deformed lying helix
Authors: Shtykov N. M. , Palto S. P. , Geivandov A. R. , Umanskii B. A. , Simdyankin I. V. , Rybakov D. O. , Artemov V. V. , Gorkunov M. V.
Published: July 2020

We report on experimental investigations of the lasing effect in novel chiral liquid crystal (CLC) systems with a deformed lying helix (DLH). The lasing is studied for both odd- and even-order field-induced stop-bands, which are characteristic exclusively of the DLH state. The DLH state is achieved in special CLC cells with periodic boundary conditions, when the surface alignment is flipped between planar and vertical states. The alignment surfaces are prepared using focused ion-beam lithography. In an electric field, such CLC systems undergo an orientational transition, when the initial Grandjean-plane texture with the helix axis perpendicular to the CLC layer is transformed into the DLH state with the helix axis oriented in the plane of the layer. Due to field-induced strong deformation, the DLH system is characterized by a set of photonic stop-bands with a fine spectral structure; namely, on these fine-structured sub-bands, we have observed and studied the low-threshold lasing effect.
InGaN blue light emitting micro-diodes with current path defined by tunnel junction
Authors: Gibasiewicz Krzysztof , Bojarska-Cieślińska Agata , Muzioł Grzegorz , Skierbiszewski Czesław , Grzanka Szymon , Kafar Anna , Perlin Piotr , Najda Stephen , Suski Tadeusz
Published: July 2020

We have fabricated tunnel-junction InGaN micro-LEDs using plasma-assisted molecular beam epitaxy technology, with top-down processing on GaN substrates. Devices have diameters between 5 µm and 100 µm. All of the devices emit light at 450 nm at a driving current density of about

10

A

c
m

−
2

. We demonstrate that within micro-LEDs ranging in size from 100 µm down to 5 µm, the properties of these devices, both electrical and optical, are fully scalable. That means we can reproduce all electro-optical characteristics using a single set of parameters. Most notably, we do not observe any enhancement of non-radiative recombination for the smallest devices. We assign this result to a modification of the fabrication process, i.e., replacement of deep dry etching by a tunnel junction for the current confinement. These devices show excellent thermal stability of their light emission characteristics, enabling operation at current densities up to

1

k
A

c
m

−
2

.
Quantum random number generator based on single-photon emitter in gallium nitride
Authors: Luo Qing , Cheng Zedi , Fan Junkai , Tan Lijuan , Song Haizhi , Deng Guangwei , Wang You , Zhou Qiang
Published: July 2020

We experimentally demonstrate a real-time quantum random number generator by using a room-temperature single-photon emitter from the defect in a commercial gallium nitride wafer. Due to the brightness of our single-photon emitter, the raw bit generation rate is about 1.8 MHz, and the unbiased bit generation rate is about 420 kHz after the von Neumann’s randomness extraction procedure. Our results show that the commercial gallium nitride wafer has great potential for the development of integrated high-speed quantum random number generator devices.
Novel In Situ Hybridization and Multiplex Immunofluorescence Technology Combined With Whole-slide Digital Image Analysis in Kidney Transplantation
Authors: Junger Henrik , Dobi Dejan , Chen Adeline , Lee Linda , Vasquez Joshua J. , Tang Qizhi , Laszik Zoltan G.
Published: July 2020

The elusive nature of assessing immunological processes in situ in organ transplantation is one of the major impediments to improve diagnostics and treatment. Here, we present a proof-of-concept study using multiplexed in situ hybridization (ISH) (RNAscope) to detect low-abundance cytokines in formalin-fixed paraffin-embedded (FFPE) human transplant kidney biopsies in combination with immunofluorescence (IF) for cell phenotyping. We show that a multiplex IF and ISH (mIFISH) assay is feasible to identify the cellular source of cytokines and chemokines (tumor necrosis factor-α, interferon-γ, and CXCL9) in FFPE transplant kidney biopsies and that quantification of the mRNA and protein signal is also possible at single-cell resolution in the context of tissue complexity. Furthermore, the mIFISH assay allows precise quantitative assessment of tubulitis, one of the key morphological correlates of alloimmune injury. Simultaneous in situ identification and quantification of multiple cellular phenotypes and mRNA expression of proinflammatory cytokines in FFPE tissues offer a novel insight into the biology of alloimmune injury in kidney transplantation and may contribute to improved diagnostic accuracy and patient care.
The neo-pin ups: Reimagining mid-twentieth-century style and sensibilities
Authors: Hackett Lisa J.
Published: July 2020

Pin Up style has made a comeback with dozens of pin up competitions featuring at retro car festivals and events across Australia. A sub-culture has grown up around this phenomenon, with boutiques, celebrities and online influencers celebrating its aesthetic. I refer to this group as ‘neo-pin ups’ to differentiate them from the pin ups of the mid-twentieth century. Despite heralding the style and beauty of 1940s and 1950s pin ups, these neo-pin ups bear little resemblance to their mid-century counterparts. Researchers such as Madeleine Hamilton have investigated the era of the original Australian 1940s and 1950s pin up, finding an image deemed to be both ‘wholesome’ and ‘patriotic’ and suitable for the troops on the front lines. Ironically, this social approval resulted in pin up evolving in a more explicit direction throughout the 1960s as epitomized by Playboy magazine and the Miss World competitions. During this time, the increasingly influential feminist movement challenged the way women were viewed in society, particularly in regard to objectification and the male gaze. This critique continues today with the #metoo and gender equality movements. This article investigates how and why Australian women are transforming the image of the 1940s and 1950s pin up. Drawing upon interviews and observations conducted within the Australian neo-pin up culture, this article demonstrates how neo-pin ups draw on contemporary mores, rejecting the social values of their mid-century counterparts and reclaiming women’s place in society and history, from a female point of view. Neo-pin ups are not looking to return to the past, instead they are rewriting what pin ups represent to the present and future.
Managers’ literacy and orality: How suited to the document-driven workplace?
Authors: Sligo Frank
Published: July 2020

For more than 50 years, scholars of managerial behaviour have described the oral more than print-oriented character of managers’ everyday worlds. Managers engage in almost incessant interpersonal interaction, seeking out oral communication with others and neglecting or mistrusting print sources of information. However, recently a revolution in workplace processes and communication has been occurring with the emergence of digitized, Internet-enabled texts throughout globalized enterprise, which are strongly influencing workplace practices. Managers rely heavily on oral modalities to do their work but increasingly they are expected to read and understand complex organizational texts, then from these sources, solve problems and make decisions. Using an assessment of managers’ literacy, this paper explores the implications for managers’ literate and oral performance at work, along with their ability to cope with the demands of the emerging document-driven workplace.
Pokémon Go as a cognitive map: Simplifying and focusing movement in postmodern urban spaces
Authors: Soukup Charles
Published: July 2020

The location-based, augmented reality video game Pokémon Go has been an unprecedented phenomenon in the short history of mobile smartphone applications. In this article, I argue that the remarkable success of Pokémon Go derives from its cognitive mapping qualities within postmodern, hyper-mediated environments. By focusing and filtering the vast information associated with navigating postmodern spaces, Pokémon Go provides individuals with greater clarity by defining the subject’s social identity in relationship to the physical environment. In particular, the game recentres the fragmented subject’s disorienting experiences associated with postmodern cultures immersed in digital information. Via its integration of location-based gaming, rudimentary augmented reality, simple mobile game design and collaborative local community-based game-play, Pokémon Go allows the individual to move about the complex urban environment with great confidence, purpose and clarity – the search for Pokémon frames the player’s objectives and attention (literally via the smartphone screen). Drawing upon the media ecology tradition, the contemporary world-view or media logic of ubiquitous digital media is dominated by quantification, clear game-like rules, and the ‘productive’ collection and management of information.
Trap, trash and theory
Authors: Kaluža Jernej
Published: July 2020

The article was first published in 2016 and uses philosophical conceptual tools (referring mostly to Gilles Deleuze and Friedrich Nietzsche) to analyse the phenomenon of trap music. The text does not discuss the questions of genre and music classifications but tries to capture the prevailing spirit and effect of trap music: trap is trap, pure tautology, pure reality, materiality and banality at the same time. Trap affirms what is, here and now. In this context, the author discerns the amoral and materialist philosophy in the background of the trap phenomenon. Even though trap seems an apolitical and conformist music, it can also carry implicit rebellious and anti-capitalistic potentials.
In search of lost jouissance
Authors: Durjava Lana
Published: July 2020

In the present text, I shall discuss jouissance and its relation to body and desire. Drawing on the works of Sigmund Freud and Jacques Lacan, I will proceed from the viewpoint that the essential property of jouissance is that does not grasp the concept of proper measure and does not
follow the logic of consequentialism. In this respect, jouissance will be interpreted as a capitulation of the pleasure principle that is characterized by indifference to the subject’s survival. Jouissance will be further treated in relation to the body as the terrain of its existence,
which is, however, significantly characterized by its failure in achieving jouissance. As a result, jouissance will be conceptualized as something unsuccessful, something that is structurally marked by the lack.
La historia que planteaba José Deleito en el aula (Facultad de Filosofía y Letras de Valencia, curso 1935-36)
Authors: Gómez Herráez José María
Published: July 2020

José Deleito expresó su concepción de la Historia a través de trabajos académicos y periodísticos. Los apuntes tomados en sus clases por uno de sus alumnos, Vicente Hervás Roselló, en 1935-36 permiten enriquecer el conocimiento de esa visión. Para contextualizar mejor esos contenidos, se considera previamente la trayectoria profesional de historiador, sus trabajos escritos, y el marco universitario en que actuó. En este análisis ha interesado especialmente observar el modo en que el contexto nacional e internacional se proyecta sobre sus reflexiones en el aula.
In-vivo evidence for proximodistal heterogeneity in hippocampal CA1 and CA3 during non-spatial memory retrieval
Authors: Ku Shihpi , Atucha Erika , Alavi Nico , Sauvage Magdalena
Published: July 2020

Recent immediate early gene evidence suggests that proximal CA3 (proxCA3, close to dentate gyrus) and distal CA1 (distCA1, close to subiculum) form a specialized non-spatial hippocampal subnetwork (nakamura et al, JON, 2013; Beer and Vavra, Plos Biology, 2018) while distal CA3 (distCA3) and proximal CA1 (proxCA1) are more specialized in spatial information processing (Flashbeck et al, 2018). However, direct
in-vivo evidence for such functional networks are still missing. Here, we used chronically implanted multi-tetrode recording technique to simultaneously record along the proximodistal axis of the two CA-fields while rats performed a high-demanding delayed non-match to odor memory task. In this task, rats smelled 10 (old) odors during the study phase, and after a 20-minute delay memory for the studied odors was tested by exposing rats to the same odors intermixed with 10 new odors. We recorded 193 CA3- and 367 CA1-neurons in 5 animals who could perfom above threshold (75%). Using Support Vector Machine (SVM) we tested whether proxCA3-distCA1 neurons (non-spatial network) can differentiate the old from new odors better than distCA3-proxCA1 neurons (spatial network). We found that activity in the proxCA3-distCA1 network was relevant for the discrimination between old from new odors and similar to behavior; in contrast, the activity of the distCA3-proxCA1 network was not. Further, we found a gradient in the distribution of task-relevant neurons along the transverse axis of CA1 as well as CA3. Overall, we provide clear
in vivo electrophysiological evidence that supports the role of proxCA3-distCA1 network in non-spatial memory processing.
Mechanically Actuated Capacitor Microphone Control using MPC and NARMA-L2 Controllers
Authors: Jibril Mustefa , Tadese Messay , Alemayehu Eliyas
Published: July 2020

In this paper, a capacitor microphone system is presented to improve the conversion of mechanical energy to electrical energy using a nonlinear auto regressive moving average-L2 (NARMA-L2) and model predictive control (MPC) controllers for the analysis of the open loop and closed loop system. The open loop system response shows that the output voltage signal need to be improved. The comparison of the closed loop system with the proposed controllers have been analyzed and a promising result have been obtained using Matlab/Simulink.
Domestic Abuse During the UK’s Covid-19 Lockdown: From Normal to New Normal and What Survivors’ Experiences Might Teach Us
Authors: Kellam Amy
Published: July 2020

This article considers emerging data on the escalation of domestic abuse in lockdown and, with reference to the proposed Domestic Abuse Bill 2020, explores how the depiction of, and response to, domestic abuse during lockdown sheds light on wider socio-legal issues and challenges.
Judicial Experiments in Caseflow Management 1920-1970
Authors: Reynolds Michael
Published: July 2020

This article explores the evolution of a subordinate judicial office of the Official Referee which was the revolutionary creation of the Judicature Commission of 1872. What is described here is the innovation and evolution of a rudimentary form of case management more than 70 years before its formal introduction in the English courts under the Civil Procedure Rules. This article considers evidence of that evolution as well as the innovations and experiments of judges ahead of their time: Sir Francis Newbolt and his successor Official Referees. It argues that the consensual and business-like approach adopted by Newbolt and others facilitated earlier settlement by means of judicial encouragement during discussions in chambers at an early interlocutory stage. It considers the extent to which Newbolt’s Scheme focused on what Marc Galanter has described as ‘quality of outcome’ and attempts to place this study in the context of the approach taken by Galanter. Such study would not be complete without reference to the work of the late Simon Roberts, which saw civil courts as being transformed into instruments of structured negotiation.
Added Sugar Consumption and the Relationship With Mood Disorders in Women
Authors: Fish Adi , George Gretchen
Published: July 2020

This cross-sectional study examined the association between added sugar consumption and levels of depression in adult women (N = 74). The 97-item online survey included Patient Health Questionnaire-9 depression scale, Block Fat/Sugar/Fruit/Vegetable Screener, added sugar knowledge
questions, and a question regarding nutrition education referral during mental health treatment. A weak positive association between added sugar consumption and levels of depression was identified, r = .389, p < .05. A majority of participants (67.5%) who sought mental health
treatment were not referred to a nutrition professional. These findings underscore a need for nutrition educators and mental health professionals to work collaboratively for impactful patient well-being.
Continuing Medical Education Questions: July 2020
Authors: Henderson Phillip K.
Published: July 2020

Article Title: Important Unresolved Questions in the Management of Hepatic Encephalopathy: An ISHEN Consensus
MICROSTRUCTURE AND MICROHARDNESS EVALUATION FOR NiCrAlY MATERIALS MANUFACTURED BY SPARK PLASMA SINTERING AND PLASMA SPRAYING
Authors: Hulka Iosif , Mušálek Radek , Lukáč František , Klečka Jakub , Chrástka Tomáš
Published: July 2020

NiCrAlY deposited by different thermal spraying methods is commonly used as the bond coat material in thermal barrier coatings (TBCs). In the present study, two experimental coatings were deposited by hybrid water stabilized plasma (WSP-H) and radio frequency inductively coupled plasma (RF-ICP) using the same feedstock powder. Spark plasma sintering (SPS) was used to manufacture a compact NiCrAlY from the same feedstock powder as a reference material. Microstructure, internal oxidation, phase characterization and quantification of the mechanical behaviour in terms of microhardness were studied. The investigations clearly showed microstructural and mechanical differences between the NiCrAlY samples manufactured by different plasma technologies. The results confirmed that SPS and RF-ICP provide dense structures with no oxides due to the fabrication under protective atmosphere and similar mechanical properties. Thus, RF-ICP may be used for deposition of very dense coatings with microstructure and hardness comparable to compacted materials prepared by SPS.
RELATION BETWEEN HARDNESS OF (Ti, Al)N BASED MULTILAYERED COATINGS AND PERIODS OF THEIR STACKING
Authors: Zaoui Mehdi , Bourceret Alexandre , Gaillard Yves , Giljean Sylvain , Rousselot Christophe , Pac Marie-José , Richard Fabrice
Published: July 2020

This study aims to model, by using a finite element method, the relationship between the hardness and the period Λ of metal/nitride multilayer coatings (Ti0.54Al0.46/Ti0.54Al0.46N)n in order to understand the increase of the hardness at the low periods [1] and then optimise the multilayer coating architecture to obtain the best mechanical properties. A 2D axisymmetric finite element model of the Berkovich nanoindentation test was developed. The coating was designed as a stacking of Ti0.54Al0.46 and Ti0.54Al0.46N nanolayers with, in the first hypothesis, equal thickness and perfect interface. The elastoplastic behaviours of the metal and nitride layers were identified by Berkovich nanoindentation experiments and inverse analysis on thick monolayer samples. The indentation curves (P-h) obtained by this model depend on the period Λ of the stacking. Simulated (P-h) curves were compared with experimental data on 2 μm thick films with different periods Λ ranging from 10 to 50 nm deposited by RF magnetron sputtering using reactive gas pulsing process (RGPP). The model forecasts are very consistent with the experience for the largest period but the model does not reproduce the hardness increase at the lowest periods. The Λ = 10 nm coating was analysed by electron energy loss spectroscopy (EELS) on a transmission electron microscope. Results show intermixing of the layers with the presence of nitrogen atoms in the metal layer over a few nanometers [1]. It was concluded that the metal/ceramic interface plays an important role at low periods. The addition in the model of a transition layer in the metal/nitride stacking, with an elastoplastic metal/ceramic medium behaviour, allows to reproduce the nanoindentation experimental curves. The thickness of this transition layer deduced from model updating method is in very good agreement with EELS observations.
APPLICATION OF STEEL FIBRES IN ALKALI-ACTIVATED MORTARS
Authors: Hüsken Götz , Wagner Lars-Christian , Gluth Gregor J. G. , Pirskawetz Stephan , Kühne Hans-Carsten
Published: July 2020

Alkali-activated materials are ideal for the repair of concrete structures in harsh environmental conditions due to their high durability in chemically aggressive environments. However, slag-based mortars, in particular, are prone to shrinkage and associated cracks. In this respect, the application of steel fibres is one solution to reduce the formation of shrinkage induced cracks and to improve post cracking behaviour of these mortars. This study investigated the influence of two different types of steel fibres on the tensile properties of two alkali-activated mortars. Direct tensile tests and single fibre pull-outs were performed to analyse the determining failure modes both on macro and micro scale. Mechanical testing was accompanied by non-destructive testing methods such as digital image correlation and acoustic emission for a detailed analysis of the fracture process.
LOCAL NANO-MECHANICAL PROPERTIES OF CROSS-LINKED POLYBUTYLENE
Authors: Ovsík Martin , Staněk Michal , Dočkal Adam , Fluxa Petr
Published: July 2020

Cross-linking is a process in which polymer chains are associated through chemical bonds. The cross-linking level can be adjusted by the irradiation dosage and often by means of a cross-linking booster. The polymer additional cross-linking influences the surface nano and micro layers in the way comparable to metals during the thermal and chemical-thermal treatments. Polybutylene terephthalate (PBT) can be found in a group of structural polymers, which are often used in industry, especially in automotive. Applying the technology of electron radiation induces a creation of 3D network structure, which improves the local mechanical properties. These were later measured by a depth sensing indentation (DSI) test. This state of the art method is based on immediate detection of indentation depth in relation to applied force. The creation of 3D network caused an increase in nano-mechanical properties values, such as indentation hardness and indentation modulus, in comparison to the virgin material. The indentation hardness rose by 80%, while the indentation modulus elevated by 62%. The selected structural materials, e.g. PBT, were modified by the electron irradiation in a positive way and as such could be moved to a group of high performance materials.
MECHANICAL PROPERTIES OF FORGED TUNGSTEN HEAVY ALLOYS
Authors: Kovářík Ondřej , Čech Jaroslav , Čapek Jiří , Hajíček Michal , Klečka Jakub , Siegl Jan
Published: July 2020

Tungsten heavy alloys are composite materials containing spherical tungsten particles embedded in binder matrix. Their excellent mechanical properties can be further improved by rotary forging. This paper aims to gain deeper understanding of the forging process by investigating the local elastic modulus, hardness, and residual stress of individual phases in W6Ni3Co pseudo-alloy. The resulting global properties of the composite material such as stress-strain behavior, fracture toughness and fatigue crack growth rate behavior are also studied. The results show that sintered and quenched material consists of highly textured matrix containing nearly perfect single crystal spheres of pure W. The rotary forging leads to significant lattice deformations destroying the texture and significantly increasing the hardness of both WNiCo matrix and W particles and making residual stresses in W particles anisotropic with increased compression along the longitudinal axis of the forged part.
A INFLUÊNCIA DO PENSAMENTO DE FRANTZ FANON NOS ESPETÁCULOS ISTO NÃO É UMA MULATA:
Authors: De Santana Monica Pereira
Published: July 2020

Neste artigo, a pesquisadora estabelece um diálogo da obra Pele Negra, Máscaras Brancas, do pensador antilhano Frantz Fanon com o espetáculo Isto Não É Uma Mulata, cuja estreia se deu em Salvador, em novembro de 2018. Neste trabalho, a pesquisadora tece uma reflexão sobre a representação e as questões identitárias numa sociedade de traços coloniais. O artigo compartilha o processo criativo do e bem como articula pontos abordados pela obra de Fanon, identificados pela autora no seu próprio corpo ao longo do processo de criação e transcriados na cena, performativamente.
EMBAIXO DESSA, OUTRAS CIDADES
Authors: Costa Thiago
Published: July 2020

Catimbó é uma identificação genérica de uso popular, para se referir às diversas manifestações religiosas presentes na Paraíba. Aqui, nesse texto, essa denominação é utilizada como uma das referências que nutrem a criação da vídeo-performance Santos Imigrantes. O texto a seguir apresenta pistas para situar o “encruzilhamento”, que se formou nesse trabalho performático e áudio-visual. O vídeo pode ser acessado através dos links https://youtu.be/44JP9xwIMT4 ou https://vimeo.com/404468579
El futuro de los jóvenes como objeto de reflexión sociológica: una práctica de extensión de educación experiencial en escuelas secundarias de la ciudad de Santa Fe
Authors: Serovich Luciana , Garcilazo Josela , Trevignani Virginia , Stehli Melania
Published: July 2020

Ante la integración creciente de la extensión y la educación experiencial en el currículo de la Universidad Nacional del Litoral, este artículo presenta una serie de encuentros y dispositivos didácticos que desarrollamos desde la cátedra de Introducción a la Sociología en una Práctica de Extensión de Educación Experiencial. A partir de las herramientas que brinda la sociología, esta práctica tuvo por objeto reflexionar con los estudiantes de la cátedra y de las diferentes escuelas con las que articulamos a lo largo del proyecto sobre la incertidumbre que atraviesan los jóvenes al finalizar la etapa de educación obligatoria. Aquí presentamos los principales lineamientos teóricos que delinearon la práctica, la centralidad de la actitud de “desnaturalización” en los dispositivos pedagógicos propuestos y los hallazgos y aprendizajes obtenidos a partir de la experiencia.
Determination of fipronil insecticide and its sulfone metabolite in internal organs of white albino rats
Authors: Mohamed Mohamed Salim Yehia
Published: July 2020

Fipronil is a popular insecticide against a wide range of household, urban, agricultural, animal pests. It gets converted into several metabolites in animals and humans but mainly to fipronil sulfone, which is more toxic and persistent. Therefore, the current study aimed to investigate the presence of fipronil and fipronil sulfone in tissues of internal organs of white albino rats using gas chromatography coupled with mass spectroscopy (GC-MS) after oral administration of rats of repetitive sublethal doses of fipronil for 14 days. Results showed that the R2 values of standard curves of detected compounds were 0.9871 and 0.9989 for FIP and fipronil sulfone, respectively with LOQ of fipronil and fipronil sulfone of 5 and 10 Âµg/g. Average recovery percentages were from 96.3Â±5.4 to 101Â±8.5% and 93.8Â±4.7 to 98.4Â±5.1% for fipronil and fipronil sulfone, respectively with RSD values lower than 10%. Fipronil was detected in all tested organs. It was concentrated with great amounts in the lungs, liver, and kidney followed by testes, spleen, and brain, while fipronil sulfone was detected in the liver, testes, spleen, and lungs tissues in descending order. Fipronil was biotransformed into fipronil sulfone at different organs of white albino rats and the GC-MS coupled with the QuEChERS extraction and clean-up method were efficient in detecting them in the internal organs of rats.Â
Colonialism, Migration, Pandemic
Authors: Monzó Lilia D.
Published: July 2020

Capitalism is a global racialized structure. Although many of the exploited working class are white peoples, people of color, especially women of color, have generally borne the brunt of the human suffering inflicted by capitalism. There is no doubt that colonialism and U.S. slavery were economic systems, but they were also brutal attacks on non-Western peoples.