cssi/SciSciGPT-SciSciNet huggingface dataset:
Millimeter wave small-scale spatial statistics in an urban microcell scenario

This paper presents outdoor wideband small-scale spatial fading and autocorrelation measurements and results in the 73 GHz millimeter-wave (mmWave) band conducted in downtown Brooklyn, New York. Both directional and omnidirectional receiver (RX) antennas are studied. Two pairs of transmitter (TX) and RX locations were tested with one line-of-sight (LOS) and one non-line-of-sight (NLOS) environment, where a linear track was employed at each RX to move the antenna in half-wavelength increments. Measured data reveal that the small-scale spatial fading of the received signal voltage amplitude are generally Ricean-distributed for both omnidirectional and directional RX antenna patterns under both LOS and NLOS conditions in most cases, except for the log-normal distribution for the omnidirectional RX antenna pattern in the NLOS environment. Sinusoidal exponential and typical exponential functions are found to model small-scale spatial autocorrelation of the received signal voltage amplitude in LOS and NLOS environments in most cases, respectively. Furthermore, different decorrelation distances were observed for different RX track orientations, i.e., for different directions of motion relative to the TX. Results herein are valuable for characterizing small-scale spatial fading and autocorrelation properties in multiple-input multiple-output (MIMO) systems for fifth-generation (5G) mmWave frequencies.
Design and motion control of bioinspired humanoid robot head from servo motors toward artificial muscles

The potential applications of humanoid robots in social environments, motivates researchers to design, and control biomimetic humanoid robots. Generally, people are more interested to interact with robots that have similar attributes and movements to humans. The head is one of most important part of any social robot. Currently, most humanoid heads use electrical motors, pneumatic actuators, and shape memory alloy (SMA) actuators for actuation. Electrical and pneumatic actuators take most of the space and would cause unsmooth motions. SMAs are expensive to use in humanoids. Recently, in many robotic projects, Twisted and Coiled Polymer (TCP) artificial muscles are used as linear actuators which take up little space compared to the motors. In this paper, we will demonstrate the designing process and motion control of a robotic head with TCP muscles. Servo motors and artificial muscles are used for actuating the head motion, which have been controlled by a cost efficient ARM Cortex-M7 based development board. A complete comparison between the two actuators is presented.
Species Tree Estimation Using ASTRAL: How Many Genes Are Enough?

Species tree reconstruction from genomic data is increasingly performed using methods that account for sources of gene tree discordance such as incomplete lineage sorting. One popular method for reconstructing species trees from unrooted gene tree topologies is ASTRAL. In this paper, we derive theoretical sample complexity results for the number of genes required by ASTRAL to guarantee reconstruction of the correct species tree with high probability. We also validate those theoretical bounds in a simulation study. Our results indicate that ASTRAL requires $O(f^{-2}\log n)$ gene trees to reconstruct the species tree correctly with high probability where $n$ is the number of species and $f$ is the length of the shortest branch in the species tree. Our simulations, some under the anomaly zone, show trends consistent with the theoretical bounds and also provide some practical insights on the conditions where ASTRAL works well.
Transient Flow Control in Open Channels by Discrete Time LQR Methods

Abstract A real-time compensation scheme for multi-pool canals is developed using linear quadratic methods. A special response of the simple wave equation is used as a basis for developing the performance index which is minimized for a linear method of characteristics flow model (discrete time). State estimation, using only depths adjacent to underflow gates, is shown to always be possible, Fixed compensation for a large flow transition is demonstrated in an example where the controlled object is a realistic, non-linear numerical flow model. A reference input which results in deadbeat control of the wave equation and allows approximate prediction of surge heights is used. Development and implementation of the compensation algorithm involves only moderate computational effort, but substantial simplification seems possible.
Terahertz induced transparency in single-layer graphene

We demonstrate THz-induced transparency in two types of single-layer CVD graphene samples utilizing high-field THz pulses. The nonlinear THz transmission depends on the local conductivity of the samples and dynamically varies in the time domain.
Successful Treatment of Hyperuricosuric Calcium Oxalate Nephrolithiasis with Potassium Citrate

Calcium stone (renal) formation In patients with hyperuricosuria has been ascribed to the urate-induced crystallization of calcium oxalate. Citrate (0.5mM), added to synthetic medium metastably supersaturated with respect to calcium oxalate, was shown to inhibit heterogeneous nucleation of calcium oxalate by monosodium urate (2 mg/mL). Long-term trial with potassium citrate (60 to 80 mEq/day) was therefore undertaken to determine whether induced hypercitraturia would prevent calcium oxalate stone formation in 19 patients with hyperuricosuria. The treatment produced a sustained rise in urinary pH by 0.55 to 0.85 to the high normal range (6.5 to 7.0). Urinary citrate levels rose by 249 to 402 mg/day to approximate the normal mean value of 643 mg/day. Commensurate with these changes, urinary saturation of calcium oxalate (relative saturation ratio) and the amount of undissociated uric acid declined significantly. However, the urinary uric acid and saturation of monosodium urate remained elevated. Stone formation declined from 1.55± ±2.70 per patient-year to 0.38 ±1.22 per patient-year during mean treatment period of 2.35 ±0.88 years. Stones ceased to form in 16 of 19 patients during treatment. The results provide physicochemical and clinical evidence for the utility of potassium citrate in the management of hyperuricosuric calcium oxalate nephrolithiasis. (Arch Intern Med1986;146:863-867)
Acquired Immune Deficiency Syndrome: Postmortem Findings

The autopsies of 13 male homosexuals with acquired immune deficiency syndrome (AIDS) were reviewed. All patients had laboratory evidence of cellular immune dysfunction. The most common diagnoses made were disseminated cytomegalovirus infection in 12 patients and Kaposi’s sarcoma in 10. All patients infected with cytomegalovirus had pulmonary compromise. The adrenal glands and gastrointestinal tract also were involved often by cytomegalovirus. Cytomegalovirus infection of organs uncommonly affected such as heart, meninges, cerebrum, and peripheral nerves was documented in two patients. Skin most frequently was involved by Kaposi’s sarcoma, followed by gastrointestinal tract and lymph nodes. Two patients had visceral and/or nodal Kaposi’s sarcoma with no skin compromise. Other important diagnoses were Pneumocystis carinii pneumonia, cryptosporidiosis, fungal infections, toxoplasmosis, and brain lymphoma. The cause of death was due to one or more infections in most patients. Kaposi’s sarcoma did not contribute substantially to the cause of death, except in one patient with massive multifocal and multiorgan involvement.
Androgen Therapy of Hypogonadal Men With Transscrotal Testosterone Systems

Abstract The need for improved controlled delivery of testosterone to hypogonadal men stimulated the development of a self-adherent transscrotal testosterone system to provide programmed testosterone delivery through the uniquely permeable scrotal skin. In this short- and long-term efficacy trial, the responses of testosterone and its metabolites to the application of transscrotal testosterone systems of varying testosterone content were compared with the response to 200 mg of testosterone enanthate. Daily transscrotal testosterone system administration resulted in a rapid increase of testosterone and bioavailable, nonsex hormone binding globulin-bound testosterone levels to normal, peaking at two hours, followed by a slow decline over 23 hours, resembling the diurnal variation of endogenous testosterone. One year of daily transscrotal testosterone system therapy demonstrated continued reliable absorption of testosterone and suppression to normal of the luteinizing hormone in two of three patients. There was a greatly disproportionate increase of serum dihydrotestosterone over testosterone, suggesting 5-alpha reduction at the scrotal site. The subjects reported marked subjective improvement. Thus, the transscrotal testosterone system is a novel, effective, and well-tolerated method of delivering testosterone to hypogonadal patients.
Mechanisms of T-Cell Functional Deficiency in the Acquired Immunodeficiency Syndrome

Abstract Cell-mediated immune responses to cytomegalovirus infections were studied to define mechanisms for deficient effector T-cell responses in patients with the acquired immunodeficiency syndro...
Adrenal Adenocarcinomas: Histologic Grading and Survival

Thirty-eight patients with adrenal adenocarcinoma were reviewed. Two of 23 males and 8 of 15 females had a functioning tumor (P less than 0.005). The most striking finding in this review was the variation in survival according to histologic grade. The median survival from histologic diagnosis was for grade I tumors 54 months, for grade II tumors 26 months, for grade III tumors 1 month. The difference in survival between patients with grade I or II tumors and those with grade III tumors was significant (P less than 0.001). The majority of the patients with grade III tumors were admitted with clinical evidence of disseminated disease and died within 1 month. Among the patients with well-differentiated tumors, five who received surgical treatment of their recurrence had a median survival of 51 months, whereas seven patients who received no surgical treatment had median survival of 20 months following first recurrence (0.05 less than P less than 0.10).
Laser Treatment of Bladder Carcinoma and Genital Condylomata

The lasers most amenable to urologic surgery are the CO2, argon, and neodymium:YAG lasers. An understanding of the characteristics of these lasers is essential to the choice of the proper laser for the individual urologic condition to be treated. The relative advantages and disadvantages of all modes of therapy for bladder carcinoma and condylomata are discussed.
Alterations in Hemostatic Parameters During Hemodialysis With Dialyzers of Different Membrane Composition and Flow Design. Platelet Activation and Factor VIII-Related von Willebrand Factor During Hemodialysis

Abstract The effect of dialyzer membrane and design on hemostatic parameters during hemodialysis were evaluated in a prospective controlled study. This study demonstrated that hemodialysis is associated with significant platelet activation and loss, which are influenced by both dialyzer configuration and membrane composition. In addition, use of the cuprophan membrane is associated with greater perturbations of the vascular endothelium, as reflected in changes in factor VIII-related von Willebrand factor and 6-keto-prostaglandin F 1α concentrations not seen with the polyacrylonitrile membrane. Of the dialyzers studied, the polyacrylonitrile membrane in a hollow-fiber configuration appears to minimize platelet loss and activation, and to minimize increases in factor VIII-related von Willebrand factor and 6-keto-prostaglandin F 1α .
Crowdsourcing the last mile delivery of online orders by exploiting the social networks of retail store customers

Abstract This paper demonstrates the potential benefits of crowdsourcing last mile delivery by exploiting a social network of the customers. The presented models and analysis are informed by the results of a survey to gauge people’s attitudes toward engaging in social network-reliant package delivery to and by friends or acquaintances. It is found that using friends in a social network to assist in last mile delivery greatly reduces delivery costs and total emissions while ensuring speedy and reliable delivery. The proposed new delivery method also mitigates the privacy concerns and not-at-home syndrome that widely exist in last mile delivery.
The Boy Who Cried Wolf? Media Messaging and Traveler Responses to “Carmageddon” in Los Angeles

One of the most heavily traveled freeways in the United States closed for construction over weekends in 2011 and 2012. Some public officials publicized the closures by appealing to civic pride whereas others threatened nightmarish delays they dubbed “Carmageddon.” In 2011, contrary to many media predictions, traffic flowed freely at volumes far below normal levels. Our analysis finds that travelers did not switch routes, modes, or trip timing, but instead forewent thousands of trips. Travel behavior changes were far more modest and mixed during the second closure in 2012. Although the lack of traffic problems surprised many public officials, we find traveler responses to both events congruent with past research. Traveler responses to the first event were more dramatic but short-lived, while more modest but durable responses to the second event suggest that travelers learned from, and were perhaps jaded by, the histrionics surrounding the first closure.
Local Immigration Enforcement and Arrests of the Hispanic Population

Section 287(g) of the Immigration and Nationality Act (INA), which was added to the INA by the Illegal Immigration Reform and Immigrant Responsibility Act of 1996 (IIRIRA), allows the federal gover...
Three provocations for civic crowdfunding

The rapid rise of crowdfunding in the past five years, most prominently among US-based platforms such as Kickstarter and IndieGoGo, has begun to attract the attention of a wide range of scholars, policymakers and practitioners. This paper considers civic crowdfunding – the use of crowdfunding for projects that produce community or quasipublic assets – and argues that its emergence demands a fresh set of questions and approaches. The work draws on critical case studies constructed through fieldwork in the United States, the UK and Brazil, and a discourse analysis of civic crowdfunding projects collected from platforms by the author. It offers three provocations to scholars and practitioners considering the practice, questioning the extent to which civic crowdfunding is participatory, the extent to which it addresses or contributes to social inequality, and the extent to which it augments or weakens the role of public institutions. In doing so, it finds that civic crowdfunding is capable of vastly divergent...
What Does (Formal) Health Insurance Do, and For Whom?

Health insurance confers benefits to the previously uninsured, including improvements in health, reductions in out-of-pocket spending, and reduced medical debt. However, because the nominally unins...
To edge or not to edge

Edge computing caters to a wide range of use cases from latency sensitive to bandwidth constrained applications. However, the exact specifications of the edge that give the most benefit for each type of application are still unclear. We investigate the concrete conditions when the edge is feasible, i.e., when users observe performance gains from the edge while costs remain low for the providers, for an application that requires both low latency and high bandwidth: video analytics.
Variants in the CYP2B6 3'UTR Alter In Vitro and In Vivo CYP2B6 Activity: Potential Role of MicroRNAs.

CYP2B6*6 and CYP2B6*18 are the most clinically important variants causing reduced CYP2B6 protein expression and activity. However, these variants do not account for all variability in CYP2B6 activity. Emerging evidence has shown that genetic variants in the 3'UTR may explain variable drug response by altering microRNA regulation. Five 3'UTR variants were associated with significantly altered efavirenz AUC0-48 (8-OH-EFV/EFV) ratios in healthy human volunteers. The rs70950385 (AG>CA) variant, predicted to create a microRNA binding site for miR-1275, was associated with 33% decreased CYP2B6 activity among normal metabolizers (AG/AG vs. CA/CA [p<0.05]). In vitro luciferase assays were used to confirm that the CA on the variant allele created a microRNA binding site causing a 11.3% decrease in activity compared to the AG allele when treated with miR-1275 (p=0.0035). Our results show that a 3'UTR variant contributes to variability in CYP2B6 activity. This article is protected by copyright. All rights reserved.
Compressive phase retrieval via generalized approximate message passing

In phase retrieval, the goal is to recover a signal x ∈ C N from the magnitudes of linear measurements Ax ∈ C M . While recent theory has established that M ≈ 4N intensity measurements are necessary and sufficient to recover generic x, there is great interest in reducing the number of measurements through the exploitation of sparse \mbi x, which is known as compressive phase retrieval. In this work, we detail a novel, probabilistic approach to compressive phase retrieval based on the generalized approximate message passing (GAMP) algorithm. We then present a numerical study of the proposed PR-GAMP algorithm, demonstrating its excellent phase-transition behavior, robustness to noise, and runtime. Our experiments suggest that approximately M ≥ 2 Klog 2 (N/K) intensity measurements suffice to recover K-sparse Bernoulli-Gaussian signals for \mbi A with i.i.d Gaussian entries and K ≪ N. Meanwhile, when recovering a 6678-sparse 65536-pixel grayscale image from 32768 randomly masked and blurred Fourier intensity measurements at 30 dB measurement SNR, PR-GAMP achieved an output SNR of no less than 28 dB in all of 100 random trials, with a median runtime of only 7.3 seconds. Compared to the recently proposed CPRL, sparse-Fienup, and GESPAR algorithms, our experiments suggest that PR-GAMP has a superior phase transition and orders-of-magnitude faster runtimes as the sparsity and problem dimensions increase.
Subjective Fatigue in Children With Hearing Loss Assessed Using Self- and Parent-Proxy Report

Purpose The primary purposes of this study were to examine the effects of hearing loss and respondent type (self- vs. parent-proxy report) on subjective fatigue in children. We also examined associ...
The terminal nerve plays a prominent role in GnRH-1 neuronal migration independent from proper olfactory and vomeronasal connections to the olfactory bulbs

Gonadotropin-releasing hormone-1 (GnRH-1) neurons (GnRH-1 ns) migrate from the developing olfactory pit into the hypothalamus during embryonic development. Migration of the GnRH-1 neurons is required for mammalian reproduction as these cells control release of gonadotropins from the anterior pituitary gland. Disturbances in GnRH-1 ns migration, GnRH-1 synthesis, secretion or signaling lead to varying degrees of hypogonadotropic hypogonadism (HH), which impairs pubertal onset and fertility. HH associated with congenital olfactory defects is clinically defined as Kallmann Syndrome (KS). The association of olfactory defects with HH in KS suggested a potential direct relationship between defective olfactory axonal routing, lack of olfactory bulbs (OBs) and aberrant GnRH-1 ns migration. However, it has never been experimentally proven that the formation of axonal connections of the olfactory/vomeronasal neurons to their functional targets are necessary for the migration of GnRH-1 ns to the hypothalamus. Loss-of-function of the Arx-1 homeobox gene leads to the lack of proper formation of the OBs with abnormal axonal termination of olfactory sensory neurons (Yoshihara et al., 2005). Our data prove that correct development of the OBs and axonal connection of the olfactory/vomeronasal sensory neurons to the forebrain are not required for GnRH-1 ns migration, and suggest that the terminal nerve, which forms the GnRH-1 migratory scaffold, follows different guidance cues and differs in gene expression from olfactory/vomeronasal sensory neurons.
Active learning of points-to specifications

When analyzing programs, large libraries pose significant challenges to static points-to analysis. A popular solution is to have a human analyst provide points-to specifications that summarize relevant behaviors of library code, which can substantially improve precision and handle missing code such as native code. We propose Atlas, a tool that automatically infers points-to specifications. Atlas synthesizes unit tests that exercise the library code, and then infers points-to specifications based on observations from these executions. Atlas automatically infers specifications for the Java standard library, and produces better results for a client static information flow analysis on a benchmark of 46 Android apps compared to using existing handwritten specifications.
Is Mainstream Economics a Science Bubble

ABSTRACTThis article uses George Soros’ theory of boom–bust cycles to argue that mainstream economics, as built on Samuelson’s Foundations, followed a similar boom-bust cycle. It underwent a reflexive, positive feedback pattern of development before 1980 followed by a reflexive, negative feedback pattern of development after 1980, making it a science bubble. The positive feedback pattern was associated with the ‘misconception’ that when economics is framed as a natural science as per Samuelson, it improves its descriptive capacities as a science; the negative feedback pattern was associated with increasing recognition that this was a ‘misconception’ and the emergence of mainstream economics’ performative ambition—the idea that economics aims to construct the world in its own image rather than describe it. The article discusses how this latter aim is embodied in later game theory, ‘new’ behavioral economics and mechanism-design theory. Yet the vision of economics as a performative science is inconsistent w...
NEW EVIDENCE ON NATIONAL BOARD CERTIFICATION AS A SIGNAL OF TEACHER QUALITY

Using longitudinal data from North Carolina that contains detailed identifiers, we estimate the effect of having a National Board for Professional Teaching Standards (NBPTS) teacher on academic achievement. We identify the effects of an NBPTS teacher exploiting multiple sources of variation including traditional‐lagged achievement models, twin‐ and sibling‐fixed effects, and aggregate grade‐level variation. Our preferred estimates show that students taught by National Board certified teachers have higher math and reading scores by 0.04 and 0.01 of a standard deviation. We find that an NBPTS math teacher increases the present value of students' lifetime income by $48,000. (JEL I20, I21, J2444)
Control of a flexible, surface-piercing hydrofoil for high-speed, small-scale applications

In recent years, hydrofoils have become ubiquitous and critical components of high-performance surface vehicles. Twenty-meter-long hydrofoil sailing craft are capable of reaching speeds in excess of 45 knots. Hydrofoil dinghies routinely travel faster than the wind and reach speeds up to 30 knots. Besides, in the quest for super-maneuverability, actuated hydrofoils could enable the efficient generation of large forces on demand. However, the control of hydrofoil systems remains challenging, especially in rough seas. With the intent to ultimately enable the design of versatile, small-scale, high-speed, and super-maneuverable surface vehicles, we investigate the problem of controlling the lift force generated by a flexible, surface-piercing hydrofoil traveling at high speed through a random wave field. We present a test platform composed of a rudder-like vertical hydrofoil actuated in pitch. The system is instrumented with velocity, force, and immersion depth sensors. We carry out high-speed field experiments in the presence of naturally occurring waves. The 2 cm chord hydrofoil is successfully controlled with a LTV/feedback linearization controller at speeds ranging from 4 to 10+ m/s.
Optimized planar Penning traps for quantum information studies

Single electron qubits are attractive for quantum information processing because they offer, for example, the possibility of extremely long coherence times. For scaling up to a large number of coupled qubits, an array of planar Penning traps is a much more promising option than the cylindrical Penning traps within which one-quantum transitions have been observed. This report summarizes optimized trap configurations, discussed at length in Goldman and Gabrielse (Phys Rev A 81:052335, 2010), which promise to make it possible to realize one-electron qubits in a scalable configuration for the first time.
Power system transient stability analysis: Formulation as nearly Hamiltonian systems

In this paper we formulate power systems as nonlinear nearly Hamiltonian systems. Using the invariance principle for ordinary differential equations, necessary and sufficient conditions for asymptotic stability are established and a new method of estimating the domain of attraction of the stable equilibrium point is developed. The present results constitute a novel approach to stability analysis and involve the following three steps: The stability criterion developed in this paper sheds new light on the mechanism of instability in power systems and it provides analytical verification to the concept of the potential-energy boundary surface (PEBS). The PEBS is a hypersurface which makes up a part of the boundary of the domain of attraction of the stable equilibrium in a power system. The existence and properties of the PEBS have thus far been deduced primarily via simulations and heuristic methods.
Ensemble Monte Carlo Study of Electron Transport in Bulk Indium Nitride

Ensemble Monte Carlo calculations of electron transport at high applied electric field strengths in bulk, wurtzite phase InN are presented. The calculations are performed using a full band Monte Carlo simulation that includes a pseudopotential band structure, all of the relevant phonon scattering agents, and numerically derived impact ionization transition rates. The full details of the first five conduction bands, which extend in energy to about 8 eV above the conduction band minimum, are included in the simulation. The electron initiated impact ionization coefficients and quantum yield are calculated using the full band Monte Carlo model. Comparison is made to previous calculations for bulk GaN and ZnS. It is found that owing to the narrower band gap in InN, a lower breakdown field exists than in either GaN or ZnS.
Pricing Lives: International Guideposts for Safety

Government agencies throughout the world use the value of a statistical life (VSL) to monetise the mortality risk reduction benefits of government policies. The most reliable empirical estimates of the VSL using US labour market data are about US$10 million (year 2015 US dollars). Based on international estimates of the income elasticity of the VSL, one can transfer these values to other countries, leading to my VSL estimate for Australia of US$7.9 million, or A$10.0 million, which is over double the current Australia best‐practices value. Transferring US VSL estimates to other nations after accounting for income differences will boost global VSL estimates. Potential refinements of the VSL based on age and income are also feasible. The VSL could serve a pivotal role in promoting safety by valuing lives in litigation contexts, regulatory sanctions, and corporate risk analyses. [ABSTRACT FROM AUTHOR]
Energy efficient scheduling of parallelizable jobs

Abstract This paper considers scheduling parallelizable jobs in the non-clairvoyant speed scaling setting to minimize the objective of weighted flow time plus energy. Previously, strong lower bounds were shown on this model in the unweighted setting even when the algorithm is given a constant amount of resource augmentation over the optimal solution. However, these lower bounds were given only for certain families of algorithms that do not recognize the parallelizability of alive jobs. In this work, we circumvent previous lower bounds shown and give a scalable algorithm under the natural assumption that the algorithm can know the current parallelizability of a job. When a general power function is considered, this is also the first algorithm that has a constant competitive ratio for the problem using any amount of resource augmentation.
Persistent or repeated surface habitability on Mars during the late Hesperian ‐ Amazonian

Large alluvial fan deposits on Mars record relatively recent habitable surface conditions (≲3.5 Ga, Late Hesperian – Amazonian). We find net sedimentation rate 20 Myr on the total time interval spanned by alluvial-fan aggradation, >10^3-fold longer than previous lower limits. A more realistic approach that corrects for craters fully entombed in the fan deposits raises the lower bound to >(100-300) Myr. Several factors not included in our calculations would further increase the lower bound. The lower bound rules out fan-formation by a brief climate anomaly. Therefore, during the Late Hesperian – Amazonian on Mars, persistent or repeated processes permitted habitable surface conditions.
Parsing Speech: a Neural Approach to Integrating Lexical and Acoustic-Prosodic Information

In conversational speech, the acoustic signal provides cues that help listeners disambiguate difficult parses. For automatically parsing spoken utterances, we introduce a model that integrates transcribed text and acoustic-prosodic features using a convolutional neural network over energy and pitch trajectories coupled with an attention-based recurrent neural network that accepts text and prosodic features. We find that different types of acoustic-prosodic features are individually helpful, and together give statistically significant improvements in parse and disfluency detection F1 scores over a strong text-only baseline. For this study with known sentence boundaries, error analyses show that the main benefit of acoustic-prosodic features is in sentences with disfluencies, attachment decisions are most improved, and transcription errors obscure gains from prosody.
Measuring costly effort using the slider task

Abstract Using real effort to implement costly activities increases the likelihood that the motivations that drive effort provision in real life carry over to the laboratory. However, unobserved differences between subjects in the cost of real effort make quantitative prediction problematic. In this paper we present the slider task, which was designed by us to overcome the drawbacks of real-effort tasks. The slider task allows the researcher to collect precise and repeated observations of effort provision from the same subjects in a short time frame. The resulting high-quality panel data allow sophisticated statistical analysis. We illustrate these advantages in two ways. First, we show how to use panel data from the slider task to improve precision by controlling for persistent unobserved heterogeneity. Second, we show how to estimate effort costs at the subject level by exploiting within-subject variation in incentives across repetitions of the slider task. We also provide z-Tree code and practical guidance to help researchers implement the slider task.
Seeing Is Believing: How People Fail to Identify Fake Images on the Web

The growing ease with which digital images can be convincingly manipulated and widely distributed on the Internet makes viewers increasingly susceptible to visual misinformation and deception. In situations where ill-intentioned individuals seek to deliberately mislead and influence viewers through fake online images, the harmful consequences could be substantial. We describe an exploratory study of how individuals react, respond to, and evaluate the authenticity of images that accompany online stories in Internet-enabled communications channels. Our preliminary findings support the assertion that people perform poorly at detecting skillful image manipulation, and that they often fail to question the authenticity of images even when primed regarding image forgery through discussion. We found that viewers make credibility evaluation based mainly on non-image cues rather than the content depicted. Moreover, our study revealed that in cases where context leads to suspicion, viewers apply post-hoc analysis to support their suspicions regarding the authenticity of the image.
Who are the People in my Neighborhood?: The “Contextual Fallacy” of Measuring Individual Context with Census Geographies

Scholars deploy census-based measures of neighborhood context throughout the social sciences and epidemiology. Decades of research confirm that variation in how individuals are aggregated into geographic units to create variables that control for social, economic or political contexts can dramatically alter analyses. While most researchers are aware of the problem, they have lacked the tools to determine its magnitude in the literature and in their own projects. By using confidential access to the complete 2010 U.S. Decennial Census, we are able to construct—for all persons in the US—individual-specific contexts, which we group according to the Census-assigned block, block group, and tract. We compare these individual-specific measures to the published statistics at each scale, and we then determine the magnitude of variation in context for an individual with respect to the published measures using a simple statistic, the standard deviation of individual context (SDIC). For three key measures (percent Black, percent Hispanic, and Entropy—a measure of ethno-racial diversity), we find that block-level Census statistics frequently do not capture the actual context of individuals within them. More problematic, we uncover systematic spatial patterns in the contextual variables at all three scales. Finally, we show that within-unit variation is greater in some parts of the country than in others. We publish county-level estimates of the SDIC statistics that enable scholars to assess whether mis-specification in context variables is likely to alter analytic findings when measured at any of the three common Census units.
Are Hazardous Substance Rankings Effective? An Empirical Investigation of Information Dissemination About the Relative Hazards of Chemicals and Emissions Reductions

Problem definition: Whether information dissemination about chemical hazards drives managers at facilities to undertake corresponding environmental actions, remains an open question that has not be...
Does More Certification Always Benefit a Venture

An implicit assumption in institutional theory is that more certifications improve a venture’s likelihood for success. However, under certain conditions, we argue more certifications may be detrime...
Guilt Dynamics: Consequences of Temporally Separating Decisions and Actions

The current research demonstrates that temporally separating a consumer’s initial decision to perform a guilt-inducing action from its actual enactment reduces the guilt felt while acting. This hypothesis follows from the development of a dynamic model that unpacks guilt into two distinct components. Initially, one experiences decision guilt accompanying the decision to act or the realization that one will act; subsequently, one experiences action guilt while engaging in the guilt-inducing behavior. Four experiments and two pilot studies reveal that introducing a temporal “decision-enactment gap” enables decision guilt to decay in this interim period, which lowers the overall guilt experienced upon acting. In line with the self-regulative function of guilt, decision-enactment gaps also increase indulgent consumption and decrease post-behavior atonement. This decoupling process can thus alleviate guilt that might otherwise detract from experiences, but may come at a cost to self-control efforts. The authors discuss the theoretical and practical implications of these findings.
Signature of the s-Wave Regime High above Ultralow Temperatures.

Resonant exchange is a general process playing a key role in many-body dynamics and transport phenomena, such as spin, charge, or excitation diffusion. The underlying process is described by the resonant exchange cross section. We show that the $s$-wave scattering, generally thought to contribute mainly in the ultracold (or Wigner) regime, dictates the overall cross section over a broad range of energies. We derive an analytical expression and explain its applicability high above the Wigner regime. In particular, we demonstrate its relationship to the classical capture (Langevin) cross section and apply it to three very different resonant processes: namely, resonant charge transfer, spin flip, and excitation exchange. This expression explains large variations for different isotopes that cannot otherwise be accounted for by the small change in mass. The $s$-wave signature also allows us to gain information about the Wigner regime from data obtained at much higher temperatures, which is especially advantageous for systems where the ultracold regime is not reachable.
The effect of unemployment insurance on alcohol use and abuse following job loss.

Abstract We investigate whether unemployment insurance (UI) policy affects the drinking behavior of the unemployed. Using NLSY data supplemented with Geocode data, we estimate the effect of benefit replacement rates on changes in individual alcohol consumption following job loss. Identification relies on variation in replacement rates across states and over time. Results indicate that a 100% increase in benefit replacement rate, roughly equivalent to a state moving from the lowest to the highest replacement rate, would, on average, result in unemployed individuals consuming 19.1 additional drinks a month. Looking at the change in an individual's binge drinking upon job loss, individuals receiving the highest level of benefits are 14.7% more likely to increase their binge drinking than those receiving the least generous benefits. We find that individuals’ responsiveness to changes in replacement rates vary based on drinking history, industry labor market conditions, education, and age.
A nearly-linear bound for chasing nested convex bodies

Friedman and Linial [8] introduced the convex body chasing problem to explore the interplay between geometry and competitive ratio in metrical task systems. In convex body chasing, at each time step t ∈ N, the online algorithm receives a request in the form of a convex body Kt ⊂ Rd and must output a point xt ∈ Kt. The goal is to minimize the total movement between consecutive output points, where the distance is measured in some given norm. This problem is still far from being understood. Recently Bansal et al. [4] gave an 6d (d!)2-competitive algorithm for the nested version, where each convex body is contained within the previous one. We propose a different strategy which is O(dlog d)-competitive algorithm for this nested convex body chasing problem. Our algorithm works for any norm. This result is almost tight, given an Ω(d) lower bound for the l∞ norm [8].
State-building or state-capture? Institutional exports, local reception and hybridity of reforms in post-war Kosovo

ABSTRACTPost-war Kosovo has been the subject of a highly intrusive international state-building project, including an unprecedented influx of international administrators, assistance and funds. How...
Using a model of family adaptation to examine outcomes of caregivers of individuals with autism spectrum disorder transitioning into adulthood

Abstract Background The study examined the burden of caring for individuals with autism spectrum disorder (ASD) transitioning from high school and factors associated with burden derived from the Double ABCX model of family adaptation (i.e., autism symptom severity, problem behaviors, pile-up life demands, personality traits, social support, cognitive appraisals, and coping strategies). In particular, we were interested in the potential association between the “big 5” personality traits and burden. Method Participants (N = 105) were caregivers of individuals with ASD within two years pre- or post-graduation from high school. Results Primary caregivers reported moderate levels of burden. As hypothesized, burden was significantly associated with both child (i.e., increased autism symptom severity and problem behaviors) and caregiver characteristics (i.e., greater neuroticism, lower levels of extraversion, conscientiousness, agreeableness, and social support, and increased use of threat appraisals and passive-avoidance coping strategies). Using multiple regression, increased child behavior problems and increased caregiver use of passive-avoidance coping were identified as independent predictors of burden. Passive-avoidance coping mediated the relationship between caregiver burden and individual personality traits (i.e., neuroticism, extraversion, conscientiousness). Conclusions The results suggest that proximal variables, such as caregivers’ use of maladaptive coping strategies, explain the associations between burden and personality. Suggestions for interventions to relieve burden are discussed.
A stationary planar random graph with singular stationary dual: dyadic lattice graphs

Dyadic lattice graphs and their duals are commonly used as discrete approximations to the hyperbolic plane. We use them to give examples of random rooted graphs that are stationary for simple random walk, but whose duals have only a singular stationary measure. This answers a question of Curien and shows behaviour different from the unimodular case. The consequence is that planar duality does not combine well with stationary random graphs. We also study harmonic measure on dyadic lattice graphs and show its singularity.
Scalable thin-layer membrane reactor for heterogeneous and homogeneous catalytic gas–liquid reactions

Catalytic gas–liquid reactions have potential as environmentally benign methods for organic synthesis, particularly hydrogenation and oxidation reactions. However, safety and scalability are concerns in the application of gas–liquid reactions. In this work, we develop and demonstrate a scalable, sustainable, and safe thin-layer membrane reactor for heterogeneous Pd-catalyzed hydrogenations and homogenous Cu(I)/TEMPO alcohol oxidations. The implementation of a Teflon amorphous fluoroplastic (AF) membrane and porous carbon cloth in the membrane reactor provides sufficient gas–liquid mass transfer to afford superior performance compared to conventional packed-bed or trickle-bed reactors. The membrane separates the gas from the liquid, which avoids the formation of explosive mixtures for oxygenation reactions and simplifies the two-phase hydrodynamics to facilitate scale-up by stacking modules, while significantly reducing gas consumption. In addition, 3-dimensional simulations deliver insights into the mass transfer and hydrodynamic behavior to inform optimal membrane reactor design and operation.
Phosphoserine acidic cluster motifs bind distinct basic regions on the μ subunits of clathrin adaptor protein complexes.

Protein trafficking in the endosomal system involves the recognition of specific signals within the cytoplasmic domains (CDs) of transmembrane proteins by clathrin adaptors. One such signal is the phosphoserine acidic cluster (PSAC), the prototype of which is in the endoprotease furin. How PSACs are recognized by clathrin adaptors has been controversial. We reported previously that HIV-1 Vpu, which modulates cellular immunoreceptors, contains a PSAC that binds to the μ subunits of clathrin adaptor protein (AP) complexes. Here, we show that the CD of furin binds the μ subunits of AP-1 and AP-2 in a phosphorylation-dependent manner. Moreover, we identify a potential PSAC in a cytoplasmic loop of the cellular transmembrane Serinc3, an inhibitor of the infectivity of retroviruses. The two serines within the PSAC of Serinc3 are phosphorylated by casein kinase II and mediate interaction with the μ subunits in vitro. The sites of these serines vary among mammals in a manner suggesting host–pathogen conflict, yet the Serinc3 PSAC seems dispensable for anti-HIV activity and for counteraction by HIV-1 Nef. The CDs of Vpu and furin and the PSAC-containing loop of Serinc3 each bind the μ subunit of AP-2 (μ2) with similar affinities, but they appear to utilize different basic regions on μ2. The Serinc3 loop requires a region previously reported to bind the acidic plasma membrane lipid phosphatidylinositol 4,5-bisphosphate. These data suggest that the PSACs within different proteins recognize different basic regions on the μ surface, providing the potential to inhibit the activity of viral proteins without necessarily affecting cellular protein trafficking.
Angle of Camera View Influences Resumption Lag in a Visual-Motor Task.

Objective:To determine whether top-view and side-view camera angles, which putatively impose different cognitive demands, differentially affect the resumption lag in a visual-motor task relevant to...
An Information Matrix Approach for State Secrecy

This paper studies the problem of remote state estimation in the presence of a passive eavesdropper. A sensor measures a linear plant's state and transmits it to an authorized user over a packet-dropping channel, which is susceptible to eavesdropping. Our goal is to design a coding scheme such that the eavesdropper cannot infer the plant's current state, while the user successfully decodes the sent messages. We employ a novel class of codes, termed State-Secrecy Codes, which are fast and efficient for dynamical systems. They apply linear time-varying transformations to the current and past states received by the user. In this way, they force the eavesdropper's information matrix to decrease with asymptotically the same rate as in the open-loop prediction case, i.e. when the eavesdropper misses all messages. As a result, the eavesdropper's minimum mean square error (mmse) for the unstable states grows unbounded, while the respective error for the stable states converges to the open-loop prediction one. These secrecy guarantees are achieved under minimal conditions, which require that, at least once, the user receives the corresponding packet while the eavesdropper fails to intercept it. Meanwhile, the user's estimation performance remains optimal. The theoretical results are illustrated in simulations.
Combinatorial Attacks on Binarized Neural Networks.

Binarized Neural Networks (BNNs) have recently attracted significant interest due to their computational efficiency. Concurrently, it has been shown that neural networks may be overly sensitive to "attacks" - tiny adversarial changes in the input - which may be detrimental to their use in safety-critical domains. Designing attack algorithms that effectively fool trained models is a key step towards learning robust neural networks. The discrete, non-differentiable nature of BNNs, which distinguishes them from their full-precision counterparts, poses a challenge to gradient-based attacks. In this work, we study the problem of attacking a BNN through the lens of combinatorial and integer optimization. We propose a Mixed Integer Linear Programming (MILP) formulation of the problem. While exact and flexible, the MILP quickly becomes intractable as the network and perturbation space grow. To address this issue, we propose IProp, a decomposition-based algorithm that solves a sequence of much smaller MILP problems. Experimentally, we evaluate both proposed methods against the standard gradient-based attack (FGSM) on MNIST and Fashion-MNIST, and show that IProp performs favorably compared to FGSM, while scaling beyond the limits of the MILP.