Miracle-dz/UniFAR-FTUs huggingface dataset:
ESTIMATING TRADE FLOWS : TRADING PARTNERS AND TRADING VOLUMES Elhanan Helpman

We develop a simple model of international trade with heterogeneous rms that is consistent with a number of stylized features of the data. In particular, the model predicts positive as well as zero trade ows across pairs of countries, and it allows the number of exporting rms to vary across destination countries. As a result, the impact of trade frictions on trade ows can be decomposed into the intensive and extensive margins, where the former refers to the trade volume per exporter and the latter refers to the number of exporters. This model yields a generalized gravity equation that accounts for the self-selection of rms into export markets and their impact on trade volumes. We then develop a two-stage estimation procedure that uses a selection equation into trade partners in the rst stage and a trade ow equation in the second. We implement this procedure parametrically, semi-parametrically, and non-parametrically, showing that in all three cases the estimated e¤ects of trade frictions are similar. Importantly, our method provides estimates of the intensive and extensive margins of trade. We show that traditional estimates are biased, and that most of the bias is not due to selection but rather due to the omission of the extensive margin. Moreover, the e¤ect of the number of exporting rms varies across country pairs according to their characteristics. This variation is large, and particularly so for trade between developed and less developed countries and between pairs of less developed countries. Keywords: trade ows, trade frictions, trade partners, estimates JEL Classi cation: F10, F12, F14 We thank Costas Arkolakis, Robert Barro, Moshe Buchinsky, Zvi Eckstein, Gene Grossman, Bo Honore, Larry Katz, Marcelo Moreira, Ariel Pakes, Jim Powell, Manuel Trajtenberg, Zhihong Yu and three referees for comments. Dror Brenner and Brent Neiman provided superb research assistance. Helpman thanks the NSF for nancial support. Melitz thanks the NSF and the Sloan Foundation for nancial support, and the International Economics Section at Princeton University for its hospitality.
Chapter 7 Providing Leadership at the District Level

Dr. Raymond Bernelli was to attend a second interview with the Oak Meadow School District (OMSD) board. If selected for the position, he would be changing employers for the fourth time in 19 years. As a superintendent, he had implemented new programs with the enthusiastic support of administrators, teachers, and the community in his current and two previous positions. Deservedly, he had acquired a reputation as a visionary leader and change agent. The OMSD serves a suburban community near a major city; the population in the metropolitan
Post-Liquefaction Free-Field Ground Settlement Case Histories

: Liquefaction-induced ground settlement is a complex process resulting from the combined effects of particle sedimentation and soil reconsolidation due to post-shaking dissipation of excess pore-water pressure. Current empirical models are based on a limited number of field case histories. Consequently, it is difficult to quantify uncertainty in the estimate of post-liquefaction settlement. A database of 205 well-documented ground settlement case histories has been created with the goal to support the development of improved liquefaction-induced ground settlement procedures. This study takes advantage of the numerous site investigations and ground motion recordings following the 2010-2011 Canterbury earthquake sequence and the 2013-2016 northern South Island New Zealand earthquakes. The general geotechnical characteristics of the sites are described, and the procedures used to process the CPT data and the models used to estimate ground motion intensity measures are summarized. The survey techniques employed to estimate liquefaction-induced ground settlement are discussed. The characteristics of a well-defined post-liquefaction ground settlement field case history is shared to illustrate the methodology employed in this study. The database is available as an electronic flatfile. Supporting information compiled in this study, such as electronic CPT data and detailed descriptions of the case histories, are also shared.
Constraint satisfaction with infinite domains

Many constraint satisfaction problems have a natural formulation as a homomorphism problem. For a fixed relational structure Gamma we consider the following computational problem: Given a structure S with the same relational signature as Gamma, is there a homomorphism from S to Gamma? This problem is known as the constraint satisfaction problem CSP(Gamma) for the so-called template Gamma and is intensively studied for relational structures Gamma with a finite domain. However, many constraint satisfaction problems can not be formulated with a finite template. If we allow arbitrary infinite templates, constraint satisfaction is very expressive. We show that it contains undecidable problems, even if the constraint language is binary. In general, a computational problem can be described as the constraint satisfaction problem of an infinite template if and only if it is closed under inverse homomorphisms and disjoint unions. It is also easy to see that we can restrict our attention to countable templates. In this thesis we study the computational complexity of constraint satisfaction with templates that are omega-categorical. A structure Gamma is omega-categorical if all countable models of the first-order theory of Gamma are isomorphic to Gamma. This concept is central and well-studied in model-theory. On the one hand, omega-categoricity is a rather strong model-theoretic assumption on a relational structure, and we can use them to show that many techniques for constraint satisfaction with finite templates extend to omega-categorical templates.
Design and considerations of ADC0808 as interleaved ADCs

Here in this paper we are presenting a digital system background technique for correcting the time offset error rate and gain mismatches in a time interleaved analog to digital converter system for N channel communication using 8 bit ADC0808 ICs. A time interleaved A to D converter system is an effective way to implement a high sampling rate ADC with relatively slow circuits. This paper analyses the benefits and derives an upper band on the performance by considering kT/C noise and slewing requirement of the circuit driving the system. In the system, several channel ADCs operate at interleaved sampling times as if they were effectively a single ADC operating at a much higher sampling rate. A timing mismatch calibration technique is proposed that covers linear and non linear channel mismatches, unifies, and extends the channel models. A novel foreground channel mismatch identification method has been developed, which can be used to fully characterize dynamic linear mismatches. A background identification method provides accurate timing mismatch estimates.
Good Governance Model in a Multicultural Society (A Ethnographic Study on Banuroja in Gorontalo)

This research stems from the concerns of researchers in this nation which is still polarized by ethnic, racial and religious identities in managing the governance, due to the low level of public understanding and awareness of multicultural democracy. Therefore, it is important to portray Banuroja village governance as a miniature of good governance in a multicultural society so that it can provide an example for people in other areas. This study aims to describe the Banuroja village governance as one of the governance role models in a multicultural society. The research approach is qualitative using ethnographic study meth-ods. The results illustrate that the success of the Banuroja community in building good village governance in a multicultural society is determined by: 1) The governance is managed cooperatively by different ethnic and religious communities; 2) Promoting a culture of deliberation to reach consensus; and 3) Leadership that protects the diversity of society.
The Inﬂuence of Islamic Eco-Spiritual Based Civic Education on Student Ecological Awareness

This research is very important considering the current environmental crisis. Signiﬁcantenvironmentaldamageispredictedtohaveanimpactonhumans. So,savingtheenvironmentmustbedonewithallefforts,oneofwhichiscivic education.ThepurposeofthisstudywastodeterminetheeffectofIslamicEco-SpiritualbasedCivicEducationlearningonstudents’ecologicalawareness.This studyusedaquasi-experimentalcomparativequantitativeapproachwithanon-equivalentcontrolgroupmodel.Thenumberofrespondentswhoparticipatedwas 598. Theresultsshowedthatciviceducationhasagreatinﬂuenceoneco-spiritual Islamintheecologicalawarenessofstudents.
Knowledge, Attitudes, And Adherence Of Mothers To Contraceptive Use

: This study determined the knowledge, attitude, and adherence of mothers to contraceptive use. It dealt with the profiles of the mothers like their age, civil status, highest educational attainment, number of years using the contraceptive, and the type of contraceptive use. A descriptive research design was used in the study utilizing different statistical tools like frequency and percentage, t-test, weighted mean, and analysis of variance (ANOVA). The respondents were young adults, who had their own families, did not pursue tertiary education, had jobs earning an average amount, with an average number of children, mostly used pills, used contraceptives for few years, and all of them got their supply in the health center. The respondents were knowledgeable on the use of contraceptives, and moderately observed the different instructions provided by the health care providers. Mothers below 20 years old, with more children and longer years of using contraceptives, have higher levels of adherence. Younger mothers perceived that adherence to the use of contraceptives will help them prevent unwanted pregnancies. No significant difference was detected in adherence to the use of contraceptives as indicated in the computed t-value of -1.125. Significant differences exist in knowledge and attitude. College undergraduates whose family income is between 10,001-20,000 pesos have a significantly higher extent of knowledge and a more positive attitude. Employed mothers have a higher extent of knowledge on the use of contraceptives as compared to unemployed ones. towards the use of contraceptives. Those with higher educational attainment, and longer use of contraceptives, have more positive attitudes towards the use of contraceptives. Further studies can be replicated in a wider perspective to further improve the knowledge, attitudes, and adherence of mothers on contraceptive use.
Overview Overview

Purpose Purpose • Development of technologies for 3-D imaging mass spectrometry Methods Methods • Model system:-color coded images of mouse brain slices on printed paper • Acquisition of two data sets:-optical and MS ion images of each model section • Two registration steps:-MS ion images of dyes to corresponding optical images-each optical image to the next serial image • Assembly of 3-D volume of the corpus callosum and the mouse brain • Incorporation of MS data Results Results • 3-D model of the corpus callosum
Innovación Abierta en la Eco-Innovación y el Rendimiento Empresarial de Empresas Manufactureras

La demanda de productos que sean más amigables con el medioambiente y lapresión de consumidores, ONG’s y grupos ambientalistas, están orillando a las empresas manufactureras a la realización de cambios importantes, entre los más trascendentales está el desarrollo de actividades de colaboración con otras organizaciones con la finalidad de mejorar la innovación de sus productos, procesos y gestión (innovación abierta). Sin embargo, poco se sabe de la relación entre la innovación abierta, ecoinnovación y rendimiento empresarial, ya que son relativamente pocos los estudios publicados en la actual literatura que se han orientado en su análisis y discusión. Por ello, esta investigación tiene como objetivo principal llenar este vacío existente en la literatura y explorar la relación existente entre la innovación abierta, la eco-innovación y el rendimiento empresarial a través de una extensa revisión de la literatura. Asimismo, se distribuyó un cuestionario autoadministrado a una muestra de 460 empresas manufactureras de México, analizando el conjunto de datos mediante el análisis factorial confirmatorio y modelos de ecuaciones estructurales. Los resultados obtenidos sugieren que la innovación abierta tiene efectos positivos significativos tanto en la eco-innovación como en el rendimiento empresarial de las empresas que integran la industria manufacturera. Se concluye que la innovación abierta tiene efectos positivos significativos tanto en la eco-innovación como en el rendimiento empresarial de las empresas que integran la industria manufacturera
Condition Stub Condition Entries Action Stub Action

System-level presynthesis refers to the optimization of an input HDL description that produces an optimized HDL description suitable for subsequent synthesis tasks. In this paper, we present optimization of control ow in behavioral HDL descriptions using external Don't Care conditions. The optimizations are carried out using a tabular model of system functionality, called Timed Decision Tables or TDTs. TDT based optimization presented here have been implemented in a program called PUMPKIN. Optimization results from several examples show a reduction of 3-88% in the size of synthesized hardware circuits depending upon the external Don't Care information supplied by the user.
Poster: Detecting WebInjects through Live Memory Inspection

Information stealing malware—a growing threat, which provokes billion-dollar losses every year—usually obtains sensitive information by modifying the content that the user’s browser renders when visiting specific (e.g., banking) websites. This poster addresses the problem of detecting when a machine is infected by such trojans. We propose IRIS, an automatic kernelspace module that analyzes the memory of the user’s browser to spot the artifacts of malicious web-injections by means of a signature matching mechanism. We leverage the signatures generated by Prometheus, an automatic system that analyzes information stealing malware by observing the differences that they produce in the infected DOMs and by generating signatures of the injection behavior. Preliminary results, conducted against real-world variants of financial trojans, show that our system can successfully detect such malware.
Possible relationships between solar activity and meteorological phenomena : a symposium held at Goddard Space Flight Center, Greenbelt, Maryland, November 7-8, 1973

A symposium was conducted in which the following questions were discussed: (1) the evidence concerning possible relationships between solar activity and meteorological phenomena; (2) plausible physical mechanisms to explain these relationships; and (3) kinds of critical measurements needed to determine the nature of solar/meteorological relationships and/or the mechanisms to explain them, and which of these measurements can be accomplished best from space.
Enhancing Secure Multiparty Computation with Elliptic Curve Cryptography Encryption

: In this research work, we investigate an Elliptic Curve Cryptography-based approach to Secure Multiparty Computation (SMC). The extensive availability of data and the advancement of communication technologies have made it feasible for people in a scattered settings to collaborate on computations. The confidentiality of the information shared between the parties is crucial. The conventional approach to SMC is to have a trusted third party (TTP) to do the calculations. TTPs are difficult to implement in practice, which is why eliminating them from SMC is so important. Traditional homomorphic encryption methods, such as RSA and Paillier, are also used in the current proposed solutions for SMC. The increased costs of utilizing such cryptosystems render the resultant SMC protocols unscalable. We propose an Elliptic Curve Cryptography (ECC)-based approach to SMC that is TTP-free and scalable (in terms of computational and communication cost). Research and study of the many ECC-based homomorphic schemes described in the literature is required in order to choose the most suitable scheme for a given application. We conduct an empirical analysis of the available ECC-based homomorphic encryption algorithms, contrasting their relative merits in terms of metrics like computational and transmission overhead. From a pool of viable options, we advise one that is both secure and efficient enough to be utilized for any work that has to be kept secret.
Ultrathin dual‐layer triple‐band flexible microwave metamaterial absorber for energy harvesting applications

An ultrathin dual‐layer flexible metamaterial absorber with triple‐band for RF energy harvesting applications has been reported in this article. The sub‐wavelength unit cell of the proposed absorber is composed of six distinct concentric annular having outer circumference of ring and octagonal inner circumference. The metallic resonators are constructed from copper foil self‐adhesive tape which are affixed on flexible neoprene rubber sheet terminated by metal ground plate. The proposed absorber prototype is ultrathin and compact with the thickness less than 0. 037λ0 and cell size less than 0. 2λ0 at the lower absorption frequency of 1.75 GHz. Flexible dual‐layer absorber exhibits triple absorption peaks of 96.91%, 96.41% and 90.12% at 1.75 GHz, 2.17 GHz and 2.6 GHz with full width at half maximum (FWHM) bandwidth of about ~6.5%. The RF performance of proposed absorber is numerically computed for different polarization and incidence angle variations. The absorption value is above 76% for the oblique incidence angle up to 45° in TE mode operation, whereas the absorption value is 94% for oblique incidence angle up to 60° in TM mode operation. The measured outcomes are in agreement with the numerically calculated results. The energy harvesting potential of the proposed absorber structure is numerically confirmed by the resulting improved RF absorption value in dependence to different resistive loading of the polarization insensitive unit cells.
COVER SHEET FOR PROPOSAL TO THE NATIONAL SCIENCE FOUNDATION

CHECK APPROPRIATE BOX(ES) IF THIS PROPOSAL INCLUDES ANY OF THE ITEMS LISTED BELOW BEGINNING INVESTIGATOR (GPG I.G.2) DISCLOSURE OF LOBBYING ACTIVITIES (GPG II.C) PROPRIETARY & PRIVILEGED INFORMATION (GPG I.D, II.C.1.d) HISTORIC PLACES (GPG II.C.2.j) SMALL GRANT FOR EXPLOR. RESEARCH (SGER) (GPG II.D.1) VERTEBRATE ANIMALS (GPG II.D.5) IACUC App. Date PHS Animal Welfare Assurance Number HUMAN SUBJECTS (GPG II.D.6) Human Subjects Assurance Number Exemption Subsection or IRB App. Date INTERNATIONAL COOPERATIVE ACTIVITIES: COUNTRY/COUNTRIES INVOLVED (GPG II.C.2.j)
Channel Restoration Design for Meandering Rivers

Abstract : A framework for channel restoration design is presented that attempts to bridge the divide between reconnaissance level geomorphological designs at one extreme and numerical modeling of hydrodynamics, sediment transport and morphological change at the other. Reestablishing equilibrium between the sediment supply and available transport capacity in the restored reach is the primary objective of the design framework. A geomorphic engineering approach is presented, which recognizes that the river is ultimately the best restorer of its natural morphology and should be allowed to participate in its own recovery. This is accomplished through designing an approximate channel mould, based on the broad dimensions of the river, and then allowing the river itself to develop the intricate cross-sectional detail and intra-reach morphological features to complete the recovery process. Geomorphic engineering provides a practical solution by striking a balance between empirical-statistical and analytical (process-based) methods. The range of techniques that comprise the design approach facilitate a realistic solution to the indeterminacy problem and confidence bands applied to typed' morphological equations provide a mechanism through which natural rivers can be used as realistic analogues for channel restoration design. By accounting for natural systems variability, the design framework is an appropriate platform for generating restoration design solutions that mimic the natural channel morphologies and environmental attributes in undisturbed systems, while meeting multifunctional goals of channel stability and low maintenance commitments. Rather than constructing physical habitats that constitute form without function, geomorphologically, the types and levels of physical habitat diversity that are sustainable in the restored reach are defined by the type of river, the nature of the sediment and flow regimes and the catchment context.
Designing Epistemic Games for Informed Civic Learning

: In this paper, we describe the design for PurpleState, an internship simulation that applies the epistemic game model for informed civic learning. PurpleState places students in the role of interns at a political media firm and asks them to design a media campaign on a state level policy issue. Unlike the use of these models in STEM education, here we use the internship simulation to develop key skills, knowledge, and values and to ask participants to reflect on the simulation itself. In this way, we utilize PurpleState to help participants develop the argumentative thinking, epistemic cognition, and self-efficacy for informed citizenship and the reflective capacity to apply their understanding of the political ecosystem being simulated. The design of PurpleState contributes to the use of simulations in civic education by focusing on state level issues and using communities of practice as a model for learning and transfer to local civic engagement.
On-Load Electromagnetic Force Analysis of a 160kW Interior PM Traction Motor Based on Frozen Permeability Method

Interior permanent magnet (IPM) machines are widely adopted as traction motors in electric vehicles (EVs), with their vibration and noise issues obtaining more and more research attentions. The radial magnetic force harmonics applied on the stator, are the main factor of electromagnetic (EM) vibration in electric machines. Relationship between open-circuit magnetic field and corresponding EM force behavior of IPM machines have been extensively investigated and well revealed, while the contribution of armature reaction field to EM force is still not well understood. In this paper, onload magnetic field harmonics in a typical 160kW, 48-slot, 8-pole IPM motor, are analyzed by analytical method and finite element tools, to investigate their contributions to radial EM force harmonics, respectively. Frozen permeability (FP) technique is utilized to extract and highlight the influence of armature reaction on EM force. The zeroth-mode EM force harmonics of three typical peak operating conditions of the motor are analyzed and corresponding radial acceleration responses are calculated. It is interesting to find that the armature field not only can increase the amplitude of the zeroth-mode vibration via generating EM force harmonics with existing time order compared with that of PM field, but also inducing additional zeroth-mode force harmonics with different time orders. The analyses results indicate clearly that armature reaction is more influential than open-circuit PM field in terms of inducing 0th mode EM vibration under peak operations with high current loading in IPM traction motors.