Miracle-dz/UniFAR-FTUs huggingface dataset:
PENGARUH MODAL KERJA, LIKUIDITAS, AKTIVITAS DAN UKURAN PERUSAHAAN TERHADAP PROFITABILITAS PADA PERUSAHAAN MANUFAKTUR YANG TERDAFTAR DI BURSA EFEK INDONESIA

Penelitian ini bertujuan untuk mengetahui pengaruh modal kerja, likuiditas, aktivitas dan ukuran perusahaan terhadap profitabilitas pada perusahaan manufaktur yang terdaftar di bursa efek indonesia. Penelitian ini menggunakan pendekatan kuantitatif. Teknik pengumpulan data yang digunakan dalam penelitian ini adalah metode dokumentasi yaitu dengan cara mengumpulkan dan mencatat laporan keuangan. Sumber data yang digunakan adalah data sekunder berupa laporan keuangan perusahaan manufaktur yang terdaftar di BEI periode 2009-2013 yang dapat diperoleh melalui website www.idx. co.id. Teknik pengambilan sampel yang digunakan adalah purposive sampling dengan jumlah responden 10 perusahaan. Metode analisis data yang digunakan adalah analisis regresi linier regresi berganda dengan menggunakaan bantuan program SPSS 19 for Windows. Hasil penelitian menyatakan bahwa (1) secara parsial modal kerja berpengaruh positif signifikan terhadap profitabilitas, (2) likuiditas tidak berpengaruh signifikan terhadap profitabilitas, (3) aktivitas berpengaruh positif signifikan terhadap profitabilitas, (4) ukuran perusahaan berpengaruh positif signifikan terhadap profitabilitas, (5) secara simultan modal kerja, likuiditas, aktivitas dan ukuran perusahaan berpengaruh signifikan terhadap profitabilitas pada perusahaan manufaktur yang terdaftar di bursa efek indonesia. Kata Kunci : modal kerja, likuiditas, aktivitas, size, profitabilitas This study was aimed at finding out the effect of working capital, liquidity, activity and size of company on profitability in manufacturing companies listed on Bursa Efek Indonesia. This Study used qualitative approach. The data collection technique used in this study was documentation method, that is, by collecting and recording financial reports. The source of the data was secondary in the form of financial reports of manufacturing companies listed on BEI in the 2009-2013 period that can be obtained through website www.idx. co.id. The sampling technique used was purposive sampling with 10 company respondents. The data analysis method used was multiple linear regression aided by program SPSS 19.0 for Windows. The results showed that (1) partially, working capital has a positive and significant effect on profitability, (2) liquidity do not have a significant effect on profitability, (3) activity has a positive and significant effect on profitability, (4) company size has a positive and significant effect on liquidity, (5) simultaneously, working capital, liquidity, activity, company size on profitability have a positive and significant effect on profitability in manufacturing companies listed on Bursa Efek Indonesia. keyword : working capital, liquidity, activity, size, profitability
Aging Aircraft NDE: Capabilities, Challenges, and Opportunities

US Air Force aircraft are managed by Damage Tolerance Assessment (DTA) and Nondestructive Evaluation (NDE) plays a critical role in insuring their flight safety. This paper provides an overview of current NDE capabilities for aircraft structures. The potential migration to Condition‐Based Maintenance (CBM) will require NDE to evolve from detection of defects to characterization of their location and size. This represents multiple significant challenges as aircraft have many material and geometry factors that complicate this analysis. This paper provides a strategy to resolve these factors.
Assessment of The Reproducibility And Precision For Milling And Prototyped Surgical Guides

Background: Technological advancements in dentistry in the past decade have led to many innovations and improvements. These advances have led to faster procedures that are more comfortable for the patient and dental surgeon compared to standard methodologies, such as conventional impressions and implant placement surgeries performed without surgical guides or with conventional handmade guides, which generate less predictable results. Use of CAD/CAM technology, both in manufacturing prostheses and in surgical planning, has led to optimization of the procedures and reductions of patient morbidity. Techniques have been developed for the preparation of surgical guides with the goal of optimizing the surgical procedure. Therefore, the aim of the study was to evaluate the reproducibility and precision of two types of surgical guides, obtained by using prototyping and milling methods.Methods: A virtual model was developed, which allowed the virtual design of surgical guide projections that were milled (n = 10) or prototyped (n = 10). Surgical guides were digitally oriented and overlapped on the virtual model that had generated them. In this way, mismatches from the master model were determined. Coefficients of variation, root mean square deviations, and mismatches during an overlap were evaluated. Results: The evaluations showed that the prototyped surgical guides had a higher coefficient of variation than the milled guides.Conclusions: Milling of the guides resulted in smaller misalignments from the master model.
Secure Communication Topologies in the Internet of Things

Secure communication between smart devices is a key issue in the Internet of Things. In this thesis, we extend the HISP communication topology model with novel channel properties and introduce two types of channel restrictions in order to better model the interaction between humans and devices in the Internet of Things. We then analyze settings involving a human H, a smart device D and a smart phone P and see for which topologies there is a protocol that establishes a shared key between D and P and for which there is none. We then analyze the security of several real-world products from the realm of the Internet of Things. Furthermore, we present an algorithm that works on general topologies consisting of an arbitrary number of devices and constructs protocols that provide authentic, confidential and secure channels between two designated nodes A and B in the network, if such protocols exist.
Age-related anxiety and self-assessment of perinatal depression risk: A web-based study

Purpose: To investigate the relationship between pre- and postpartum anxiety and self-assessment of perinatal depression (PD) risk in pregnant women. Methods: We recruited volunteers for an anonymous questionnaire survey using an app service for pregnant and nursing mothers (Luna Luna Baby, MTI Co Ltd) from November 19 to 30, 2018. The questionnaire consists of 30 items on anxiety during and after pregnancy. Multivariate logistic regression analysis was performed with age, occupation, history of pregnancy, and self-assessment of PD risk as explanatory variables. All statistical analyses were performed using Stata software, Version 15.0. The study was approved by the ethics committee. Results: A total of 1987 pregnant women responded. In both pregnancy and postpartum periods, women aged 19 years or younger felt the most anxious about their financial situation (17/25, 68%). Women in their 20's to 30's were the most worried about the baby’s safety (1162/1893,60.1%). Those with a higher self-estimated risk of PD tended not to list the baby’s safety as an anxiety item, but listed money, financial situation, and mother's own health as concerns. The percentage of those who worried about the baby’s safety was significantly lower in women with a self-assessed PD risk of 90% or higher. Conclusions: The causes of the anxiety in the pregnancy and postpartum periods a may be correlated with age and risk of PD. Health care providers may need to consider the possibility of PD development in pregnant women with high anxiety regarding their financial conditions, health, or raising children.
Building trust in user-analyst relationships

Computer-based information systems are generally built through partnerships between users and systems analysts. Of particular importance is the key user, typically a senior manager of a functional area where the system is to be used. The key user controls resources and has authority to make decisions. The systems analyst is an expert in information technology. Most key users lack expertise in information technology and are therefore dependent on the expertise of the systems analyst. The relationships which develop between users and analysts during system development projects have long been believed to affect the efficiency with which systems are built and the effectiveness of the systems themselves. However, empirical research on the effects of relationship quality is limited. One problem has been the lack of an appropriate theoretical framework. This research addresses several aspects of user-analyst relationships. First, a new theoretical framework is proposed based on the key user's trust in the analyst. This research model is based on theories of trust from Organizational Economics and the Social Sciences. The model is first tested in interviews with both users and analysts, using critical incident methodology. Second, based on the interview results, instruments to measure the user's trust in the analyst are developed and validated. The instruments measure the analyst's trust building behaviors, key analyst qualities, the user's willingness to depend on the analyst, and the level of trust present in the user's behaviors and intended behaviors. The most important measures are shown to be sufficiently valid for exploratory purposes. The results show that users are most trusting of analysts who are good project managers, good team builders, communicate well, and support the user. Qualities specifically related to the analyst's expertise are of less importance. Third, the research provides a new insight into existing research on user-analyst relationships. Although user involvement is often believed to be critical to project success, empirical research has found only a modest correlation. The trust model identifies low trust and high risk as important determinants of involvement. These determinants may directly affect project success and therefore must be controlled when studying the effect of involvement.
Minimal extracorporeal circulation: An appraisal from a private practice

Introduction: The systemic inflammatory response associated with cardio-pulmonary bypass (CPB) is detrimental to organ function in varying degrees. Minimal extracorporeal circulation (MECC) assumes an attenuation of these deleterious effects. The aim of this study was to compare conventional CPB (CCPB) with MECC, in a population of patients who had their CABG done in a private practice in South Africa. Methods: Two historical cohort analytical studies were done on patients who had isolated CABG done by one surgeon in the Mediclinic Bloemfontein. Patients who had their CABG done using CCPB were compared statistically using logistic regression to those who had their CABG done with MECC. A propensity score matching was also used to compare the 2 groups. In a second follow-up study, a once-off lactate on arrival in the intensive care unit was compared. A qualitative assessment of the technique by the various role-players in theatre was added to the initial study. Results: The primary CCPB group had 1 572 patients. The MECC group comprised 367 patients. No statistically significant outcome difference was found in terms of mortality, major morbidity, post-operative blood loss or usage of homologous blood. Once the 2 groups were evenly matched, patients with MECC had a better serum creatinine postoperatively, but renal dialysis could not be avoided. Patients with MECC also had a statistically shorter hospital stay. The second study (CCPB n=63 and MECC n=100) confirmed the shorter hospital stay. There was no difference in the lactate value between the 2 groups. In general, there are varying levels of enthusiasm among the theatre specialists for a MECC strategy. Conclusions: MECC protects the kidneys, but not so much against renal dialysis. MECC patients could stay for a somewhat shorter time in hospital. Tissue perfusion based on a once-off lactate level was equal. MECC might be technically more demanding. This article is an important addition to the literature that adds a local perspective.
Synchronizer Design: A Mathematical and Dimensional Treatise

1.0 Abstract The manual transmission synchronizer design has been a real challenge, and is usually referred to as a myth and black magic. A mathematical algorithm and dimensioning and tolerancing scheme has been developed to dispel this myth. A unique and logical user-friendly method for designing synchronizer is devised. The knowledge that existed in the public domain is advanced to higher level to show that the design and calculations of physical parameters must go hand in hand. The paper attempts to demonstrate the fact that the calculations of synchronizer physical parameters should be supported by scrupulously dimensioning and tolerancing the components design to achieve the intended functional objective. A mathematical algorithm is developed which facilitates establishing the sleeve and blocker ring pointing angle relationship with the synchronizer size, coefficient of friction, cone torque, and index torque. The relationship is presented graphically in a unique manner identifying the clash and hard shift zones. As such, it allows sizing the synchronizer and selection of the parameters for a given application for comfortable shiftability between the two extremes of clash and hard shift. Synchronization episode is separated in to the following six distinct events: Event I. Strut contacts blocker ring Event II. End of strut loading, strut out of detent Event III. Sleeve point hits ring point, ring clocked Event IV. Sleeve chamfer passes through ring chamfer Event V. Sleeve tooth point contacts clutching tooth point Event VI. Sleeve tooth chamfer passes through gear clutching tooth chamfer Arithmetic stack and calculations are utilized to iteratively dimension and tolerance the components for each event so functional harmony is achieved in concert with the selected physical parameters. Event charts are presented with illustrations and necessary stack for dimensioning and tolerancing the synchronizer components. The components that play significant role in each event are identified and related to specific physical parameter.
Nonlinear equations of equilibrium for elastic helicopter or wind turbine blades undergoing moderate deformation

A set of nonlinear equations of equilibrium for an elastic wind turbine or helicopter blades are presented. These equations are derived for the case of small strains and moderate rotations (slopes). The derivation includes several assumptions which are carefully stated. For the convenience of potential users the equations are developed with respect to two different systems of coordinates, the undeformed and the deformed coordinates of the blade. Furthermore, the loads acting on the blade are given in a general form so as to make them suitable for a variety of applications. The equations obtained in the study are compared with those obtained in previous studies.
Gestão de risco nas atividades de investimento dos Regimes Próprios de Previdência Social (RPPS) dos municípios do Estado do Rio Grande do Sul

The objective of this work is to identify the mechanisms of risk management currently adopted in investment activities of municipal retirement plans (RPPS) of the State of Rio Grande do Sul, Brazil. The methodology applied in the research is descriptive (using survey techniques) and quantitative (using probabilistic research). The research was accomplished in the period of December 2007 to February 2008 in the 303 municipal districts of the State of Rio Grande do Sul that maintain constituted RPPS. The survey received 84 municipal districts responses, allowing the research to reach a 9% error level in the probabilistic approach. The results of the research demonstrate 58% of the managers of RPPS declare not to possess a formalized investment policy; 70% declared not to maintain specific investment management sound practices and 74% informed they not to have investment management specific support systems. The cluster analysis provided the characterization of districts grouped by risk management practices combined with other socio-economic indicators. Three distinct clusters were identified, showing, as expected, the best practices among the RPPS are adopted by larger districts with larger investment volumes. Finally, in spite of Brazilian regulation recent advances, the results of the research demonstrate that mechanisms of risk control are not adopted in risk management of the investment activities of municipal retirement plans.
The impact of information technology on corporate financial reporting: a contingency perspective

Previous studies investigating IT impact on accounting suffer from a lack of theoretical guidance. An examination of the nature of information technology (IT), financial information and corporate financial reporting (CFR) indicates that the evaluation of IT impact on CFR requires a general, flexible and adaptive framework. Analogous to the contingency theory of organizations (CTO), this paper proposes such a framework. Its general assumptions are that the impact of IT on different aspects of CFR varies and the degree and pattern are contingent upon environmental, organizational, and managerial characteristics. Hypotheses have been developed to expand the framework. An evaluation of the framework against criticisms of CTO shows that it avoids several much criticized problems although care must be taken to ameliorate other pitfalls.
Two-dimensional computational modeling of sodium boiling in simulated LMFBR fuel pin bundles

Extensive sodium boiling tests have been carried out in two simulated LMFBR fuel pin bundles in the Thermal-Hydraulic Out-of-Reactor Safety (THORS) Facility at Oak Ridge National Laboratory. Experimental results from a 19-pin bundle (THORS Bundle 6A) have been previously reported, and experimental results from a 61-pin bundle (THORS Bundle 9) will be reported soon. The results discussed here are from the 19-pin bundle. Preliminary analysis has shown that the computational methods used and conclusions reached are equally valid for the 61-pin bundle, as well as the 19-pin in-reactor Sodium Loop Safety Facility (SLSF) W-1 experiment. The main result of THORS sodium boiling experimentation is that boiling behavior is determined by two-dimensional effects, i.e., the rates of mass, momentum and energy transfer in the direction perpendicular to the axes of the fuel pins.
Measurement of Turbulent Pressure and Temperature Fluctuations in a Gas Turbine Combustor

ABSTRACT The proper characterization of unsteady fluctuations in the outflow from gas turbine combustors during actual operation is greatly relevant to industrial equipment designers and manufacturers, because of the direct impact on turbine blade heat transfer and hence on the efficiency, life and safety of turbines. This is especially the case for lean-flame combustors operating near the stability limits to reduce pollutant emissions and for the higher pressure, higher temperature applications envisaged in the future. The turbulence level at the combustor exit directly affects the heat transfer rate to the nozzle guide vanes and to the downstream turbine blades, with crucial effects on the cooling requirements of these components. Unfortunately, because of the limitations of existing experimental techniques and of the severe conditions (1600 K, 20 atmospheres, or more) in this flow region, little (if any) experimental information on the flow unsteady properties is available on combustors operating near their design conditions. The present research concerns the development of high-frequency pressure and temperature probes and related instrumentation capable of performing spectral characterization of unsteady pressure and temperature fluctuations over the 0.05–20 kHz range, at the exit of a gas turbine combustor operating at conditions close to nominal ones for large power generation turbomachinery. The probes used a transient technique pioneered at Oxford University; in order to withstand exposure to the harsh environment the probes were fitted on a rapid injection and cooling system jointly developed by Centrospazio-CPR and Syracuse University. The experimental runs were performed on a large industrial test rig being operated by ENEL Produzione. The achieved results clearly show the satisfactory performance provided by this diagnostic tool, even though the poor location of the injection port prevented the tests from yielding more insight of the core flow turbulence characteristics. The pressure and temperature probes survived several dozen injections in the combustor hot jet, while consistently providing the intended high frequency performance. The apparatus was kept connected to the combustor during long duration firings, operating as an unobtrusive, self contained, piggy-back experiment: high frequency flow samplings were remotely recorded at selected moments corresponding to different combustor operating conditions.
Large-Scale Mercury Control Technology Testing for Lignite-Fired Utilities - Oxidation Systems for Wet FGD

The Energy & Environmental Research Center (EERC) is conducting a consortium-based effort directed toward resolving the mercury (Hg) control issues facing the lignite industry. Specifically, the EERC team--the EERC, EPRI, URS, ADA-ES, Babcock & Wilcox, the North Dakota Industrial Commission, SaskPower, and the Mercury Task Force, which includes Basin Electric Power Cooperative, Otter Tail Power Company, Great River Energy, Texas Utilities (TXU), Montana-Dakota Utilities Co., Minnkota Power Cooperative, BNI Coal Ltd., Dakota Westmoreland Corporation, and the North American Coal Company--has undertaken a project to significantly and cost-effectively oxidize elemental mercury in lignite combustion gases, followed by capture in a wet scrubber. This approach will be applicable to virtually every lignite utility in the United States and Canada and potentially impact subbituminous utilities. The oxidation process is proven at the pilot-scale and in short-term full-scale tests. Additional optimization is continuing on oxidation technologies, and this project focuses on longer-term full-scale testing. The lignite industry has been proactive in advancing the understanding of and identifying control options for Hg in lignite combustion flue gases. Approximately 1 year ago, the EERC and EPRI began a series of Hg-related discussions with the Mercury Task Force as well as utilities firing Texas and Saskatchewan lignites. This project is one of three being undertaken by the consortium to perform large-scale Hg control technology testing to address the specific needs and challenges to be met in controlling Hg from lignite-fired power plants. This project involves Hg oxidation upstream of a system equipped with an electrostatic precipitator (ESP) followed by wet flue gas desulfurization (FGD). The team involved in conducting the technical aspects of the project includes the EERC, Babcock & Wilcox, URS, and ADA-ES. The host sites include Minnkota Power Cooperative Milton R. Young Unit 2 and TXU Monticello Unit 3. The work involves establishing Hg oxidation levels upstream of air pollution control devices (APCDs) and removal rates across existing ESP and FGD units, determining costs associated with those removal rates, investigating the possibility of the APCD acting as a multipollutant control device, quantifying the balance of plant impacts of the control technologies, and facilitating technology commercialization.