cssi/SciSciGPT-SciSciNet huggingface dataset:
Spontaneous Retroperitoneal Hemorrhage: A Case Report

Hemorrhage resulted in a large retroperitoneal mass in an adolescent male. Surgical exploration revealed only hematoma. Serum markers were useful in leading to the correct diagnosis. This presentation has not been previously reported in embryonal cell carcinoma.
The Relationship of Histamine H2 Receptor-Bearing Suppressor Cells With the Growth and Metastasis of FANFT-Induced Bladder Cancer

A poorly differentiated transitional cell carcinoma in C3H/He mice results from the oral ingestion of the urinary tract carcinogen FANFT. This model, designated MBT2, is readily transplantable into syngeneic animals and has proven to be very useful in the development of chemotherapy. Prior to the use of this model for the testing of potential immunotherapeutic strategies, we have attempted to characterize the immunobiology of this tumor line. We report that the primary growth of this tumor in the footpad and its metastasis to lung are correlated with the development of increased numbers of suppressor cells, characterized by the expression of a surface histamine H2 receptor. These cells are originally evident in spleen and become maximal approximately 4 weeks after tumor implantation. This is followed by the migration of these cells from spleen to peripheral blood, an event that parallels the growth and eventual metastasis of this implanted transitional cell carcinoma. These events may have important significance for the development of immunomodulating therapy against bladder cancer.
Cooperative Clinical Trials of the National Prostatic Cancer Project: Protocol 900

In May 1978, the National Prostatic Cancer Project Treatment Subgroup activated its first clinical trial evaluating adjuvant chemotherapy (Protocol 900). This protocol is a comparison of long-term adjuvant chemotherapy with cyclophosphamide, estramustine phosphate, or no additional treatment in patients with definitive surgical therapy for adenocarcinoma of the prostate. To date, 128 patients have been entered with an entry rate of approximately 2.2 patients per month. One hundred five patients form the basis of this report, with 96 patients still on active therapy. Estramustine phosphate has been administered at a dose of 600 mg/m2 orally daily in three divided doses. The cyclophosphamide is administered 1 g/m2 intravenously every 3 weeks. Results are still preliminary; only two evaluable patients have died. Approximately two-thirds of patients entered have had negative lymph nodes. Recurrent disease has been documented in 15 patients, including eight receiving cyclophosphamide, three receiving estramustine phosphate, and four on the no-treatment arm. The recurrence rate has been disproportionately high (50%) in patients receiving cryosurgery rather than radical prostatectomy (12%). Maximum survival has reached 241 weeks. Side effects have consisted of leukopenia in patients receiving cyclophosphamide (56%), and nausea and vomiting with cyclophosphamide (85%), and estramustine phosphate (36%). This study continues with patient entries now over one-half of the number anticipated in the original study design.
Epidermoid Cysts of the Testis: A Report of Three Cases and an Analysis of 141 Cases From the World Literature

Epidermoid cysts of the testis are rare and represent about 1% of all testicular tumors. An analysis of 141 cases reported to date in the world literature, including the cases reported here, indicates that 50% of the lesions occur in the third decade and 86% between the second and fourth decade. The most common presentations are painless enlargement of the testis (41%) for an average period of 2.25 years or incidental detection during routine physical examination (33%). Clinically, a discrete testicular nodule can be palpated in the majority of the cases (76%). Pathologic findings are those of a squamous lined cyst containing keratin with absence of appendages or other elements. It is believed that, despite the benign nature of the lesion, they should be treated by orchiectomy so that a thorough pathologic examination can be done to establish a confident diagnosis. While some controversy exists about their source of origin, all the evidence, including the age, more common occurrence among whites, and the rare reported cases arising in cryptorchid testis points to a germ cell origin for these lesions. The epidermoid cyst should thus be recognized as another subtype in the category of germ cell tumors of the testis and perhaps the ovary.
Surgical Correction of Urinary Incontinence

Over the last 6 years, 114 patients have undergone surgery for urinary incontinence. The majority (79%) had neurologic dysfunction of the bladder because of spinal malformation (myelodysplasia, sacral agenesis, or trauma) and the remaining were a mixed group including exstrophy/epispadias, urethral valves, pelvic fractures, etc. The patients were grouped in six categories. Those with lower urethral resistance underwent bladder neck reconstruction with Young-Dees-Leadbetter procedure (five patients) or had placement of an artifical urinary sphincter (27 patients). Those with poor bladder compliance underwent primary bladder augmentation (21 patients). Those with combined urethral problems and poor compliance had combined procedures (14 patients). Thirty-seven patients previously diverted for incontinence and undergoing undiversion were considered separately, as were ten patients without any bladder precluding preoperative assessment. Of the entire group, continence was achieved in 83 patients with the initial procedure (73%). Secondary procedures have resulted in continence in 101 patients (89%). Three patients were improved but unsatisfactory, and nine remain wet; one is unknown.
Intermediaries and product quality in used car markets

We present empirical evidence supporting that used cars sold by dealers have higher quality: (i) dealer transaction prices are higher than unmediated market prices, and this dealer premium increases in the age of the car as a ratio and is hump‐shaped in dollar value, and (ii) used cars purchased from dealers are less likely to be resold. In a model, we show that these empirical facts can be rationalized either when dealers alleviate information asymmetry, or when dealers facilitate assortative matching. The model predictions allow us to distinguish these two theories in the data, and we find evidence for both.
Causal Inference in Conjoint Analysis: Understanding Multidimensional Choices via Stated Preference Experiments

Survey experiments are a core tool for causal inference. Yet, the design of classical survey experiments prevents them from identifying which components of a multidimensional treatment are influential. Here, we show how conjoint analysis, an experimental design yet to be widely applied in political science, enables researchers to estimate the causal effects of multiple treatment components and assess several causal hypotheses simultaneously. In conjoint analysis, respondents score a set of alternatives, where each has randomly varied attributes. Here, we undertake a formal identification analysis to integrate conjoint analysis with the potential outcomes framework for causal inference. We propose a new causal estimand and show that it can be nonparametrically identified and easily estimated from conjoint data using a fully randomized design. The analysis enables us to propose diagnostic checks for the identification assumptions. We then demonstrate the value of these techniques through empirical applications to voter decision making and attitudes toward immigrants.
Domestic Flying Geese: Industrial Transfer and Delayed Policy Diffusion in China

This study illuminates the important yet under-studied phenomenon of industrial transfer in China: the migration of capital and investment from wealthy coastal areas into poorer central and western provinces, beginning in the 2000s. By 2015, the value of domestic investment in five central provinces alone was 2.5 times that of foreign investment throughout China. Compared to the original “flying geese” model of tiered production in Asia, China's experience is distinct in three ways: (1) industrial transfer occurred domestically, rather than across nations; (2) sub-national transfer followed cross-national transfer; and (3) industrial migration is accompanied by a delayed replication of government policies and practices. While coastal locales today resolve to expel low-end industries, inland governments cannot afford to be selective and have only recently adopted the aggressive investment promotion tactics that coastal cities abandoned years ago. Policy diffusion is delayed as policy adoption depends on economic conditions, which vary widely across China and change over time.
Improving Regret Bounds for Combinatorial Semi-Bandits with Probabilistically Triggered Arms and Its Applications

We study combinatorial multi-armed bandit with probabilistically triggered arms (CMAB-T) and semi-bandit feedback. We resolve a serious issue in the prior CMAB-T studies where the regret bounds contain a possibly exponentially large factor of 1/p*, where p* is the minimum positive probability that an arm is triggered by any action. We address this issue by introducing a triggering probability modulated (TPM) bounded smoothness condition into the influence maximization bandit and combinatorial cascading bandit satisfy this TPM condition. As a result, we completely remove the factor of 1/p* from the regret bounds, achieving significantly better regret bounds for influence maximization and cascading bandits than before. Finally, we provide lower bound results showing that the factor 1/p* is unavoidable for general CMAB-T problems, suggesting that the TPM condition is crucial in removing this factor.
Ethics and Market Design

This paper examines the relationship between ethics and market design. It argues that market design should not rely wholly on preference utilitarianism in order to make ethical judgements. It exposits an alternative normative framework—informed neutrality between reasonable ethical positions.
Stretched too thin? The relationship between insufficient resource allocation and physical education instructional time and assessment practices

Abstract With provisions in the Every Student Succeeds Act, attention to physical education (PE) programs in school will be crucial for developing well-rounded students. We assessed the availability of resources that have the potential to impact PE (staffing, continuing education, annual PE equipment budgets) in a nationally-representative sample of 640 U.S. public elementary schools. Higher student-to-PE teacher ratios were associated with students not receiving adequate instruction. Equipment budgets were minimal (median = $500) and 30% of schools had no budget at all. Additional financial support from federal and state education agencies would help schools to better meet recommendations for PE.
Patent protection for microbial technologies

Microbial technologies often serve as the basis of fundamental research tools in molecular biology. These present a variety of ethical, legal and social issues concerning their patenting. This commentary presents several case studies of these issues across three major microbiological tools: CRISPR, viral vectors and antimicrobial resistance drugs. It concludes that the development of these technologies-both scientifically and commercially-depend, in part, on the patent regime available for each, and researchers' willingness to enforce those patents against others.
PERI-OPERATIVE PAIN MANAGEMENT: ASSURING A HAPPY PATIENT

The entirety of the patient experience after contemporary total knee and total hip replacements in 2016 is markedly different from that encountered by patients just a decade ago. Ten years ago most patients were treated in a traditional sick-patient model of care and because they were assumed to require substantial hospital intervention, many cumbersome and costly interventions (e.g. indwelling urinary catheters, patient-controlled-analgesic pumps, autologous blood transfusion, continuous passive motion machines) were a routine part of the early post-operative experience. Today the paradigm has shifted to a well-patient model with a working assumption that once a patient has been medically optimised for surgery then the intervention itself, hip or knee replacement, will not typically create a sick-patient. Instead it is expected that most patients can be treated safely and more effectively with less intensive hospital intervention. While as orthopaedic surgeons we are enamored with the latest surgical techniques or interesting technologies most busy surgeons recognise that advances in peri-operative pain management, blood management, and early-mobilisation therapy protocols account for the greatest share of improvements in patient experience over the past decade. One can think pragmatically to get ahead and stay ahead of 3 predictable physiologic disturbances that adversely impact rapid recovery after knee and hip replacement: fluid/blood loss; pain; and nausea. The modern orthopaedic surgeon and his/her care team needs a simple strategy to pro-actively, not reflexively, manage each of those 3 predictable impediments to early recovery. Those surgical teams that routinely get ahead and stay ahead in each of those areas will routinely witness faster recovery, lower costs and greater patient satisfaction and that is clearly a win for patient and surgeon alike. Effective pain management improves patient satisfaction, decreases hospital stay, and facilitates discharge to home. Today9s emphasis is on a multi-modal strategy that minimises the use of opioids. Most protocols use pre-operative medications including an NSAID, acetaminophen, an oral opioid and some include gabapentin. Regional anesthesia is typically preferred over general. Both peripheral nerve blocks and periarticular local anesthetic cocktail injections have proved as effective adjuncts in decreasing early post-operative pain. Post-operative oral medications delivered on a schedule, not just as needed, often include acetaminophen, an NSAID and some included gabapentin. Oral and parenteral opioids are reserved for breakthrough pain.
Decentralized power system stabilizer design using linear parameter varying approach

In this paper, the power system model is formulated as a finite dimensional linear system whose state-space entries depend continuously on a time varying parameter vector called the scheduling variables. This system is referred to as the linear parameter varying (LPV) system. Although the trajectory of the changing parameters such as load levels and tie line flows is not known in advance, in most situations, they can be measured in real time. The LPV technique is applied to the decentralized design of power system stabilizers (PSS) for large systems. In the approach developed, instead of considering the complete system model with all the interconnections, we develop a decentralized approach where each individual machine is considered separately with arbitrarily changing real and reactive power output in a defined range. These variables are chosen as the scheduling variables. The designed controller automatically adjusts its parameters depending on the scheduling variables to coordinate with change of operating conditions and the dynamics of the rest of the system. The resulting decentralized PSSs give good performance in a large operating range. Design procedures are presented and comparisons are made between the LPV decentralized PSSs and conventionally designed PSSs on the 50-generator IEEE test system.
The Effectiveness of Central Bank Forward Guidance Under Inflation and Price-level Targeting

Abstract This paper examines the effectiveness of central bank forward guidance under inflation and price-level targeting monetary policies. The results show that the beneficial effects of forward guidance increase if a central bank pursues price-level targeting instead of inflation targeting. Output and inflation respond more favorably to forward guidance with price-level targeting than inflation targeting. A monetary policy rule that aggressively reacts to inflation and includes interest rate inertia narrows the performance gap between the two policy regimes. However, forward guidance with price-level targeting is still preferred to forward guidance with inflation targeting after performing multiple robustness checks.
Near-atomic cryo-EM imaging of a small protein displayed on a designed scaffolding system.

Current single-particle cryo-electron microscopy (cryo-EM) techniques can produce images of large protein assemblies and macromolecular complexes at atomic level detail without the need for crystal growth. However, proteins of smaller size, typical of those found throughout the cell, are not presently amenable to detailed structural elucidation by cryo-EM. Here we use protein design to create a modular, symmetrical scaffolding system to make protein molecules of typical size suitable for cryo-EM. Using a rigid continuous alpha helical linker, we connect a small 17-kDa protein (DARPin) to a protein subunit that was designed to self-assemble into a cage with cubic symmetry. We show that the resulting construct is amenable to structural analysis by single-particle cryo-EM, allowing us to identify and solve the structure of the attached small protein at near-atomic detail, ranging from 3.5- to 5-A resolution. The result demonstrates that proteins considerably smaller than the theoretical limit of 50 kDa for cryo-EM can be visualized clearly when arrayed in a rigid fashion on a symmetric designed protein scaffold. Furthermore, because the amino acid sequence of a DARPin can be chosen to confer tight binding to various other protein or nucleic acid molecules, the system provides a future route for imaging diverse macromolecules, potentially broadening the application of cryo-EM to proteins of typical size in the cell.
LAVEA: latency-aware video analytics on edge computing platform

Along the trend pushing computation from the network core to the edge where the most of data are generated, edge computing has shown its potential in reducing response time, lowering bandwidth usage, improving energy efficiency and so on. At the same time, low-latency video analytics is becoming more and more important for applications in public safety, counter-terrorism, self-driving cars, VR/AR, etc. As those tasks are either computation intensive or bandwidth hungry, edge computing fits in well here with its ability to flexibly utilize computation and bandwidth from and between each layer. In this paper, we present LAVEA, a system built on top of an edge computing platform, which offloads computation between clients and edge nodes, collaborates nearby edge nodes, to provide low-latency video analytics at places closer to the users. We have utilized an edge-first design and formulated an optimization problem for offloading task selection and prioritized offloading requests received at the edge node to minimize the response time. In case of a saturating workload on the front edge node, we have designed and compared various task placement schemes that are tailed for inter-edge collaboration. We have implemented and evaluated our system. Our results reveal that the client-edge configuration has a speedup ranging from 1.3x to 4x (1.2x to 1.7x) against running in local (client-cloud configuration). The proposed shortest scheduling latency first scheme outputs the best overall task placement performance for inter-edge collaboration.
Earnings acceleration and stock returns

Abstract We document that earnings acceleration, defined as the quarter-over-quarter change in earnings growth, has significant explanatory power for future excess returns. These excess returns are robust to a wide range of previously documented anomalies and a battery of risk controls. The future return predictability appears to be consistent with investors assuming a seasonal random walk model for quarterly earnings and missing predictable implications of earnings acceleration for future earnings growth. Finally, the excess returns from the basic earnings acceleration strategy can be enhanced further by focusing on profit firms, low earnings volatility firms and on specific patterns of earnings acceleration.
Radiation effects characterization of TI LMH5401-SP ultra-wideband fully differential amplifier (FDA)

The SEE, TID, and SET effects of the LMH5401-SP, industry leading fully differential amplifier, are presented. No latch up events were observed up to an LET of 85 MeV.cm2/mg at 125 C.
Multimode simulation of high frequency gyrotrons

We present a simulation study of mode competition in a highly overmoded gyrotron cavity, modeled after the approximate design parameters of a 280 GHz, 1 MW TEp42,7-mode gyrotron at the Massachusetts Institute of Technology (MIT). This study addresses 1) the problem of achieving gyrotron operation in the design mode, and at a value of magnetic detuning sufficient to achieve high efficiency operation, and 2) the mode purity of the final state.
Financials Sector Intraday Volatility Characteristics in the Emerging Turkish Economy

The Financials sector in the Turkish economy has grown at a tremendous rate over the last 35 years. The liberalization and the opening of the economy to international and foreign investors in the 1990s, and the overhaul of the structure of the Turkish banking system with numerous reforms after the economic crisis in the beginning of the 2000s have strengthened the sector. The purpose of this study is to examine the volatility characteristics of the sector in recent years. Using intraday data, the efficiency of the Financials sector and the five sub-sectors (Banking, Insurance, Financial Factoring, Investments, Real Estate) are examined. The impacts of global, regional, and domestic events are analyzed. Public policy decisions of financial regulators to accommodate the changing economic and political conditions are investigated, as is the efficacy of such decisions.
A certainty equivalence result in team-optimal control of mean-field coupled Markov chains

This paper studies a large number of homogeneous Markov decision processes where the transition probabilities and costs are coupled in the empirical distribution of states (also called mean-field). The state of each process is not known to others, which means that the information structure is fully decentralized. The objective is to minimize the average cost, defined as the empirical mean of individual costs, for which a sub-optimal solution is proposed. This solution does not depend on the number of processes, yet it converges to the optimal solution of the so-called mean-field sharing as the number of processes tends to infinity. Under some mild conditions, it is shown that the convergence rate of the proposed decentralized solution is proportional to the square root of the inverse of the number of processes. Finding this sub-optimal solution involves a non-smooth non-convex optimization problem over an uncountable set, in general. To overcome this drawback, a combinatorial optimization problem is introduced that achieves the same rate of convergence.
Participants’ Perspectives of a Worksite Wellness Program Using an Outcome-Based Contingency Approach

Worksite wellness programs in the U.S. are increasingly common. Social workers in healthcare and administration should familiarize themselves with the various wellness programs and the impact they have on workers and organizations. This study examined a worksite wellness outcome-based contingency approach (WWOCA). This approach bases individual employee health insurance discounts on each participant achieving biometric goals. A mixed-method explanatory approach was used. Quantitative health measures of participants (n = 397) and six focus group discussions (n = 45) were conducted using a convenience sample. Results indicate that over half of the participants met their work-based health goals (i.e., body measurements at the average or excellent rankings) with increases from 56% in year one to 87% in year two and 90% by year three. However, focus group participants expressed a high sense of failure in relation to health goal attainment, frustration with loss of the financial incentive, and stress and anxiety linked to negative feedback about their body measurements. These results suggest that many participants’ self-worth was negatively impacted when participants had difficulty conforming to worksite wellness standards. Social workers in healthcare and administration will need to advocate for worksite wellness programs that promote human dignity and avoid discriminating based on employee health status.
The social genome of friends and schoolmates in the National Longitudinal Study of Adolescent to Adult Health

Humans tend to form social relationships with others who resemble them. Whether this sorting of like with like arises from historical patterns of migration, meso-level social structures in modern society, or individual-level selection of similar peers remains unsettled. Recent research has evaluated the possibility that unobserved genotypes may play an important role in the creation of homophilous relationships. We extend this work by using data from 5,500 adolescents from the National Longitudinal Study of Adolescent to Adult Health (Add Health) to examine genetic similarities among pairs of friends. Although there is some evidence that friends have correlated genotypes, both at the whole-genome level as well as at trait-associated loci (via polygenic scores), further analysis suggests that meso-level forces, such as school assignment, are a principal source of genetic similarity between friends. We also observe apparent social-genetic effects in which polygenic scores of an individual's friends and schoolmates predict the individual's own educational attainment. In contrast, an individual's height is unassociated with the height genetics of peers.
Etch Processing of III-V Nitrides

As III-V nitride devices advance in technological importance, a fundamental understanding of device processing techniques becomes essential. Recent works have exposed various aspects of etch processes. The most recent advances and the greatest remaining challenges in the etching of GaN, AlN, and InN are reviewed. A more detailed presentation is given with respect to GaN high density plasma etching. In particular, the results of parametric and fundamental studies of GaN etching in a high density plasma are described. The effect of ion energy and mass on surface electronic properties is reported. Experimental results identify preferential sputtering as the leading cause of observed surface non-stoichiometry. This mechanism provides excellent surfaces for ohmic contacts to n-type GaN, but presents a major obstacle for Schottky contacts or ohmic contacts to p-type GaN. Chlorine-based discharges minimize this stoichiometry problem by improving the rate of gallium removal from the surface. In an effort to better understand the high density plasma etching process for GaN, in-situ mass spectrometry is employed to study the chlorine-based high density plasma etching process. Gallium chloride mass peaks were monitored in a highly surface sensitive geometry as a function of microwave power (ion flux), total pressure (neutral flux), and ion energy. Microwave power and pressure dependencies clearly demonstrate the importance of reactive ions in the etching of wide band gap materials. The ion energy dependence demonstrates the importance of adequate ion energy to promote a reasonable etch rate (≥100-150 eV). The benefits of ion-assisted chemical etching are diminished for ion energies in excess of 350 V, placing an upper limit to the useful ion energy range for etching GaN. The impact of these results on device processing will be discussed and future needs identified.
Mixed RF/FSO Relaying Systems with Hardware Impairments

In this work, we provide a detailed analysis of a dual-hop fixed gain (FG) amplify-and-forward relaying system, consisting of a hybrid radio frequency (RF) and free-space optical (FSO) channels. We introduce an impairment model which is the soft envelope limiter (SEL). Additionally, we propose the partial relay selection (PRS) protocol with outdated channel state information (CSI) based on the knowledge of the RF channels in order to select one relay for the communication. Moreover, the RF channels of the first hop experience Rayleigh fading while we propose a unified fading model for the FSO channels, called the unified Gamma Gamma (GG), taking into account the atmospheric turbulence, the path loss and the misalignment between the transmitter and the receiver aperture also called the pointing error. Novel closed-forms of the outage probability (OP), the bit error probability (BEP) and the average ergodic capacity (EC) are derived in terms of Meijer-G and Fox-H functions. Capitalizing on these metrics, we also derive the asymptotical high signal-to-noise ratio (SNR) in order to get engineering insights into the impacts of the hardware impairments and the system parameters as well. Finally, using Monte Carlo simulations, we validate numerically the derived mathematical formulations.
A Framework for Developing Cyber-Physical Systems

Cyber-physical systems (CPSs) are pervasive in our daily life from mobile phones to auto-driving cars. CPSs are inherently complex due to their sophisticated behaviors and thus difficult to build. ...
The President's Commission and Sentencing, Then and Now

The President’s Commission’s proposals on sentencing were sensible, humane, well-informed, and ambitious. They were premised on an assumption that indeterminate sentencing, then ubiquitous, would long continue, and sought to remedy its weaknesses and build upon its strengths. That assumption proved wrong. Within a decade, indeterminate sentencing and its rehabilitative aspirations lost credibility and legitimacy. Within two decades, American policies incorporated features such as determinate sentences, lengthy prison terms, and mandatory minimum sentence laws that the commission explicitly repudiated. The commission’s influence is evident in successful sentencing reform initiatives of the 1970s and early 1980s, some of which survive in a few places in compromised forms. Many of the commission’s proposals to make sentencing fairer, more consistent, and less vulnerable to influence by political considerations and public emotion, are as germane today as they were in 1967.
The effect of a state health care consent law on patient care in hospitals: A survey of physicians

Objective: When a patient cannot make medical decisions for him or herself, and has not appointed a healthcare representative, default state healthcare consent laws determine who is able to make healthcare decisions for the patient. The narrow construction of some state laws leaves many patients in situations where the closest person to the patient does not qualify as a representative under the law, or where the patient has too many representatives and a consensus cannot be reached on the patient’s medical care. Methods: In order to determine how state healthcare consent laws affect patient care in hospitals, a survey of 412 Indiana physicians was conducted. Results: The data shows 53.8% of physicians experienced a delay in patient care because they were unable to identify a legally appropriate health care representative. Almost half (46.01%) of physicians experienced delay of patient care due to the inability to identify a final decision maker when disputes arose between multiple legal representatives. Conclusions: The results of this study have important implications for hospital administrators as a delay in patient care can be costly and unnecessarily utilizes hospital resources. Additionally, the results of this study have important implications for the status of state surrogate decision making laws. Amending state laws to include more potential surrogates, has the potential to minimize delays in patient care and ensure that appropriate surrogates are making medical care decisions for patients without the undue burden of court intervention.
What's Wrong with Slactivism? Confronting the Neoliberal Assault on Millennials

Despite the constant attacks on the millennial generation it turns out that they demonstrate extraordinary political promise: they vote at a higher percentage of their demographic than any of the preceding generations, and they do more community service. What’s more, as a cohort, they have absolutely no patience for the conservative, fundamentalist attacks on the rights of women, immigrants, people of color, and the LGBT community. Even more salient is that this is the generation that returned to the streets in protest in a revised version of traditional forms of activism, as evidenced by Occupy Wall Street (OWS).
Use And the Function of Property

Many scholars assume that property concepts contribute very little to the way in which people think about rights in resources. Yet these assumed views do not accord with what we know about clocks, keys, fiat currency, and other artifacts. Artifacts are intention-dependent objects. The distinct ways in which different artifacts satisfy those intentions—their artifact functions—give artifacts more structure and coherence than is commonly believed. Those lessons come from scholarship on the philosophy of artifacts, and this Article uses them to study property concepts. This Article studies three concepts of property prominent in Anglo-American property law. All three concepts perform a common artifact function, facilitating the beneficial use of ownable resources. In the concepts and this function, “use” refers to an interest people have in deploying resources for rational well-being and consistent with others’ correlative use-interests. This Article supplies accounts of the intensions for the three concepts introduced. The Article also shows that these concepts extend coherently to property doctrines that are believed to confound encompassing concepts of property—easements, licenses, covenants running with the land, and the interests that beneficiaries hold in wealth-management trusts fall within the extensions for the appropriate concepts.
Revisiting the scientometric conceptualization of impact and its measurement

Abstract The development of scientometric indicators and methods for evaluative purposes, requires a multitude of assumptions, conventions, limitations, and caveats. Given this, we cannot permit ambiguities in the key concepts forming the basis of scientometric science itself, or research assessment exercises would rest on quicksand. This conceptual work attempts to spell out some principles leading to a clear definition of “impact” of research, and above all, of the appropriate scientometric indicator to measure it. The aim is to stimulate a discussion aimed at a definitive convergence on the meaning and measurement of a fundamental concept of the scientometric science.
Multiresolution Tree Networks for 3D Point Cloud Processing

We present multiresolution tree-structured networks to process point clouds for 3D shape understanding and generation tasks. Our network represents a 3D shape as a set of locality-preserving 1D ordered list of points at multiple resolutions. This allows efficient feed-forward processing through 1D convolutions, coarse-to-fine analysis through a multi-grid architecture, and it leads to faster convergence and small memory footprint during training. The proposed tree-structured encoders can be used to classify shapes and outperform existing point-based architectures on shape classification benchmarks, while tree-structured decoders can be used for generating point clouds directly and they outperform existing approaches for image-to-shape inference tasks learned using the ShapeNet dataset. Our model also allows unsupervised learning of point-cloud based shapes by using a variational autoencoder, leading to higher-quality generated shapes.
Escalation of Scrutiny: The Gains from Dynamic Enforcement of Environmental Regulations

The U.S. Environmental Protection Agency uses a dynamic approach to enforcing air pollution regulations, with repeat offenders subject to high fines and designation as high priority violators (HPV). We estimate the value of dynamic enforcement by developing and estimating a dynamic model of a plant and regulator, where plants decide when to invest in pollution abatement technologies. We use a fixed grid approach to estimate random coefficient specifications. Investment, fines, and HPV designation are costly to most plants. Eliminating dynamic enforcement would raise pollution damages by 164% with constant fines or raise fines by 519% with constant pollution damages.
Can Game(s) Theory Explain Culture? The Emergence of Cultural Behavior Within Multiple Games

The hallmarks of cultural behavior include consistency within and across individuals, variance between populations, behavioral stickiness, and possibly suboptimal performance. In this article, we build a formal framework within which these behavioral attributes emerge from the interactions of purposive agents. We then derive mathematical results showing these behaviors are optimal given our assumptions. Our framework rests on two primary assumptions: (1) agents play ensembles of games, not just single games as is traditionally the case in evolutionary game theory models; and (2) agents have finite cognitive capacity. Our analysis combines agent-based techniques and mathematics, enabling us to explore dynamics and to prove when the behaviors produced by the agents are equilibria. Our results provide game theoretic foundations for cultural diversity and agent-based support for how cultural behavior might emerge.
Interleaving Channel Estimation and Limited Feedback for Point-to-Point Systems With a Large Number of Transmit Antennas

We introduce and investigate the opportunities of multi-antenna communication schemes whose training and feedback stages are interleaved and mutually interacting. Specifically, unlike the traditional schemes, where the transmitter first trains all of its antennas at once and then receives a single feedback message, we consider a scenario, where the transmitter instead trains its antennas one by one and receives feedback information immediately after training each one of its antennas. The feedback message may ask the transmitter to train another antenna; or, it may terminate the feedback/training phase and provide the quantized codeword (e.g., a beamforming vector) to be utilized for data transmission. As a specific application, we consider a multiple-input single-output system with $t$ transmit antennas, a short-term power constraint $P$ , and target data rate $\rho $ . We show that for any $t$ , the same outage probability as a system with perfect transmitter and receiver channel state information can be achieved with a feedback rate of $R_{1}$ bits per channel state and via training $R_{2}$ transmit antennas on average, where $R_{1}$ and $R_{2}$ are independent of t , and depend only on $\rho $ and $P$ . In addition, we design variable-rate quantizers for channel coefficients to further minimize the feedback rate of our scheme.
Potential Forest Loss and Biodiversity Risks from Road Improvement in Lao PDR

This paper develops and applies a spatial econometric model that links road upgrading to forest clearing and biodiversity loss in the Lao People's Democratic Republic. The paper uses 500-meter cells to estimate the relationship between the rate of forest clearing in a cell and its distance to the closest point on the nearest road link, the quality of that link, the cell's legal protection status, transport cost to the nearest urban center, the agricultural opportunity value of the land, and terrain elevation. The parameter estimates are all robust, with the expected signs and very high statistical significance. The paper highlights the results that measure the impact of improved road quality on forest clearing through shorter transport times to market and lower vehicle maintenance costs. The estimated response parameters and a composite biodiversity indicator are used to compute an index of expected biodiversity loss from road upgrading in each 500meter cell. The results identify areas in the Lao People’s Democratic Republic where high expected biodiversity loss may warrant additional protection as road upgrading continues. This analysis will help policy makers in the country to weigh context-specific trade-offs between development and conservation objectives associated with road improvement.
TASI Lectures on Large $N$ Tensor Models

The first part of these lecture notes is mostly devoted to a comparative discussion of the three basic large $N$ limits, which apply to fields which are vectors, matrices, or tensors of rank three and higher. After a brief review of some physical applications of large $N$ limits, we present a few solvable examples in zero space-time dimension. Using models with fields in the fundamental representation of $O(N)$, $O(N)^2$, or $O(N)^3$ symmetry, we compare their combinatorial properties and highlight a competition between the snail and melon diagrams. We exhibit the different methods used for solving the vector, matrix, and tensor large $N$ limits. In the latter example we review how the dominance of melonic diagrams follows when a special ``tetrahedral" interaction is introduced. The second part of the lectures is mostly about the fermionic quantum mechanical tensor models, whose large $N$ limits are similar to that in the Sachdev-Ye-Kitaev (SYK) model. The minimal Majorana model with $O(N)^3$ symmetry and the tetrahedral Hamiltonian is reviewed in some detail; it is the closest tensor counterpart of the SYK model. Also reviewed are generalizations to complex fermionic tensors, including a model with $SU(N)^2\times O(N)\times U(1)$ symmetry, which is a tensor counterpart of the complex SYK model. The bosonic large $N$ tensor models, which are formally tractable in continuous spacetime dimension, are reviewed briefly at the end.
Optimal Sparse Singular Value Decomposition for High-Dimensional High-Order Data

In this article, we consider the sparse tensor singular value decomposition, which aims for dimension reduction on high-dimensional high-order data with certain sparsity structure. A method named s...
Topological transport of vorticity in Heisenberg magnets

We study a robust topological transport carried by vortices in a thin film of an easy-plane magnetic insulator between two metal contacts. A vortex, which is a nonlocal topological spin texture in two-dimensional magnets, exhibits some beneficial features as compared to skyrmions, which are local topological defects. In particular, the total topological charge carried by vorticity is robust against local fluctuations of the spin order-parameter magnitude. We show that an electric current in one of the magnetized metal contacts can pump vortices into the insulating bulk. Diffusion and two-dimensional nonlocal Coulomb-like interaction between these vortices will establish a steady-state vortex flow. Vortices leaving the bulk produce an electromotive force at another contact, which is related to the current-induced vorticity pumping by the Onsager reciprocity. The voltage signal decays algebraically with the separation between two contacts, similarly to a superfluid spin transport. Finally, the vorticity and closely related skyrmion-type topological hydrodynamics are generalized to arbitrary dimensions, in terms of nonsingular order-parameter vector fields.
Democracy as an equilibrium: rational choice and formal political theory in democratization research

Over the past quarter century, some of the most influential propositions about democratization have been developed with the tools of rational choice and formal political theory. In this article, I ...
Policy Evolution under the Clean Air Act

The US Clean Air Act, passed in 1970 with strong bipartisan support, was the first environmental law to give the federal government a serious regulatory role, established the architecture of the US air pollution control system, and became a model for subsequent environmental laws in the United States and globally. We outline the act's key provisions, as well as the main changes Congress has made to it over time. We assess the evolution of air pollution control policy under the Clean Air Act, with particular attention to the types of policy instruments used. We provide a generic assessment of the major types of policy instruments, and we trace and assess the historical evolution of the Environmental Protection Agency's policy instrument use, with particular focus on the increased use of market-based policy instruments, beginning in the 1970s and culminating in the 1990s. Over the past 50 years, air pollution regulation has gradually become more complex, and over the past 20 years, policy debates have become increasingly partisan and polarized, to the point that it has become impossible to amend the act or pass other legislation to address the new threat of climate change.
PermDNN: efficient compressed DNN architecture with permuted diagonal matrices

Deep neural network (DNN) has emerged as the most important and popular artificial intelligent (AI) technique. The growth of model size poses a key energy efficiency challenge for the underlying computing platform. Thus, model compression becomes a crucial problem. However, the current approaches are limited by various drawbacks. Specifically, network sparsification approach suffers from irregularity, heuristic nature and large indexing overhead. On the other hand, the recent structured matrix-based approach (i.e., CirCNN) is limited by the relatively complex arithmetic computation (i.e., FFT), less flexible compression ratio, and its inability to fully utilize input sparsity. To address these drawbacks, this paper proposes PermDNN, a novel approach to generate and execute hardware-friendly structured sparse DNN models using permuted diagonal matrices. Compared with unstructured sparsification approach, PermDNN eliminates the drawbacks of indexing overhead, non-heuristic compression effects and time-consuming retraining. Compared with circulant structure-imposing approach, PermDNN enjoys the benefits of higher reduction in computational complexity, flexible compression ratio, simple arithmetic computation and full utilization of input sparsity. We propose PermDNN architecture, a multi-processing element (PE) fully-connected (FC) layer-targeted computing engine. The entire architecture is highly scalable and flexible, and hence it can support the needs of different applications with different model configurations. We implement a 32-PE design using CMOS 28nm technology. Compared with EIE, PermDNN achieves 3.3x ~ 4.8x higher throughout, 5.9x ~ 8.5x better area efficiency and 2.8x ~ 4.0x better energy efficiency on different workloads. Compared with CirCNN, PermDNN achieves 11.51x higher throughput and 3.89x better energy efficiency.
Local Governments and Economic Freedom: A Test of the Leviathan Hypothesis:

Brennan and Buchanan’s Leviathan hypothesis states that “potential for fiscal exploitation varies inversely with the number of competing governmental units” (p. 211) and that “total government intr...
Elasticity of bamboo fiber variants from Brillouin spectroscopy

Abstract Bamboo is a fast growing biomaterial that is of great interest as a rapidly renewable structural building material. As such, knowledge of the elastic properties is crucial to its use. Using non-contact, non-invasive Brillouin spectroscopy, we measure the entire elastic stiffness tensor and determine the complete set of elastic moduli of six species of bamboo fiber variants. The Young’s moduli, bulk modulus, shear moduli, and Poisson’s ratios are determined and shown to scale linearly with fiber density. These results provide the first order elastic properties of several fiber variants of bamboo which is crucial to a thorough understanding of how species variation yields specific elastic properties thereby enabling a complex understanding of the properties of this unique biomaterial.