Miracle-dz/UniFAR-FTUs huggingface dataset:
Substrate integrate waveguide quasi Yagi antenna using SIW-to-CPS transition for low mutual coupling

Rectangular waveguides of large size and high cost are widely used for low loss and high power microwave and millimeter-wave communication system. Recently, a new technique, substrate integrated waveguide (SIW) has been constructed by two parallel rows of via holes in a metalized planar substrate. The SIW has merits of low cost, low profile, and easy integration with planar circuits [1]. Therefore, the SIW technology has great potential for a wide range of applications such as filters, power dividers, and antennas [1]-[3].
The Cogent Case for Property-Based Testing

Property-based testing can play an important role in reducing the cost of formal verification: It has been demonstrated to be effective at detecting bugs and finding inconsistencies in specifications, and thus can eliminate effort wasted on fruitless proof attempts. We argue that in addition, property-based testing enables an incremental approach to a fully verified system, by allowing replacement of automatically generated tests of properties stated in the specification by formal proofs. We demonstrate this approach on the verification of systems code, discuss the implications on systems design, and outline the integration of property-based testing into the Cogent framework.
Evaluating the Impact of Max Transition Constraint Variations on Power Reduction Capabilities in Cell-Based Designs

Power optimization is a very important and challenging step in the physical design flow, and it is a critical success factor of an application-specific integrated circuit (ASIC) chip. Many techniques are used by the place and route (P&R) electronic design automation (EDA) tools to meet the power requirement. In this paper, we will evaluate, independently from the library file, the impact of redefining the max transition constraint (MTC) before the power optimization phase, and we will study the impact of over-constraining or under-constraining a design on power in order to find the best trade-off between design constraining and power optimization. Experimental results showed that power optimization depends on the applied MTC and that the MTC value corresponding to the best power reduction results is different from the default MTC. By using a new MTC definition method on several designs, we found that the power gain between the default methodology and the new one reaches 2.34%.
Luck, Effort, and Reward in an Organizational Hierarchy

Using the personnel records of a large British financial sector employer we investigate how workers respond to remuneration differences and “luck” in the promotion system. The results confirm that workers respond to larger remuneration spreads by working harder. Increased certainty in the promotion process also has this effect. There appears to be no difference between men’s and women’s reactions to promotion incentives. Gender differences in the raw data therefore appear not due to incentives. We need to look elsewhere for an explanation.
Analysis of Pituitary Lesions in Fatal Closed Head Injury

AbstractWe analyzed forensic autopsy findings of 66 consecutive patients with fatal closed head injury who survived up to 48 days after trauma to ascertain the causal factors and the time course of development of posttraumatic pituitary lesions. Pituitary lesions were identified in 27 patients. In patients with pituitary lesions, posterior lobe hemorrhage was observed in 21 patients, followed by anterior lobe hemorrhage in 10 patients and anterior lobe infarct in 7 patients. Comparisons between patients with and without pituitary lesions showed that falls and subdural hematoma were significantly frequent in patients with pituitary lesions. Immunohistochemistry of neurophysin showed increased immunoreactivity in the hypothalamus of patients with pituitary lesions and brain edema, providing morphologic evidence of pituitary dysfunction. Hemorrhage in the anterior or posterior lobe was identifiable in patients with short survival periods, whereas infarct in the anterior lobe appeared in patients surviving at least 14 hours. These data further our understanding of the mechanisms of pituitary dysfunctions and help in the estimation of the survival period after head trauma.
An Immersed Boundary Method ForSimulating Compressible Viscous Flow InComplex Geometries

This paper presents an immersed boundary method combined with a wall-layer approach implemented into an established flow solver. In the outer flow field, the compressible Navier-Stokes equations are solved using an approximate Riemann Solver whereas simplified boundary-layer equations are solved near the wall. Turbulence is accounted for by the one-equation model of Spalart-Allmaras in the outer flow region and by a mixing length eddy viscosity model with near wall damping in the wall layer. Computations performed for various test cases show good agreement with reference data found in literature.
Right ventricular contractility depression in chronically infarcted rats.

We studied the in vitro mechanical performance of right ventricular strips obtained from male albino rats submitted to left coronary ligation for 30 days. The infarcted rats developed significant right ventricle hypertrophy together with a reduction of the isometric tension when compared to controls. The reduction was maintained even under positive inotropic intervention, i.e. the cumulative dose-response curves to calcium and adrenaline were displaced downward in parallel in the hypertrophied muscles. We conclude that after 30 days of left ventricle infarction the hypertrophied right ventricular myocardium presents a significant reduction of contractility.
Reinsurance Contracting with Adverse Selection and Moral Hazard: Theory and Evidence

The adverse selection and moral hazard problems have been widely discussed in the context of insurance markets. However, previous studies on asymmetric information usually treat the adverse selection and moral hazard problems separately, though it is quite possible that they may coexist and interact with each other. This paper builds a principal-agent model to examine the optimal contracts in a competitive reinsurance market facing the adverse selection and moral hazard problems simultaneously. This paper finds that: (1) there are several forms of separating Nash equilibria, (2) separating Nash equilibria may not exist, (3) no agent is offered full coverage, and (4) the positive correlation property between insurance coverage and risk type found in the case of pure adverse selection still holds.
Is “Teach-Back” Associated With Knowledge Retention and Hospital Readmission in Hospitalized Heart Failure Patients?

Background:Heart failure (HF) is a chronic and costly condition that affects approximately 5.8 million people in the United States, with an additional 670 000 diagnosed yearly. With high 30-day hospital readmission rates, the importance of determining effective means of preventing readmissions is imperative. Despite published guidelines emphasizing the importance of education in preventing readmissions, the most effective means of educating hospitalized patients with HF about their self-care remains unknown. Objective:The aim of this study was to determine if hospitalized HF patients educated with the teach-back method retain self-care educational information and whether it is associated with fewer hospital readmissions. Methods:A prospective cohort study design included 276 patients older than 65 years hospitalized with HF over a 13-month period. Patients were educated and evaluated using the teach-back method as part of usual care. Data on ability to recall educational information while hospitalized and during follow-up approximately 7 days after hospital discharge were collected. Readmissions were confirmed through follow-up telephone calls and review of medical records. Results:Patients correctly answered 3 of 4, or 75%, of self-care teach-back questions 84.4% of the time while hospitalized and 77.1% of the time during follow-up telephone call. Greater time spent teaching was significantly associated with correctly answered questions (P < .001). Patients who answered teach-back questions correctly while hospitalized and during follow-up had nonsignificant (P = .775 and .609) reductions in all-cause 30-day hospital readmission rates, but a trend toward significance (P = .15) was found in patients who had readmissions for HF. Conclusions:The teach-back method is an effective method used to educate and assess learning. Patients educated longer retained significantly more information than did patients with briefer teaching. Correctly answered HF-specific teach-back questions were not associated with reductions in 30-day hospital readmission rates. Future studies that include patients randomized to receive usual care or teach-back education to compare readmissions and knowledge acquisition would provide further comparison of teach-back effectiveness.
Antenna designs of smart watch for cellular communications by using metal belt

In this paper, we present three cellular antenna designs for the smart watch application by using the metal watch belt. Our proposed antennas can cover cellular bands down to 700 MHz and up to 2.7GHz. Their performance in the free space and user cases are measured and discussed. The SAR evaluation guideline from FCC is also introduced and SAR measurement results are shown.
Who Goes Where and How? Firm Heterogeneity in the Choice of FDI Type and Location

This paper examines the role of firm heterogeneity in the choice made by multinationals with regards to FDI type and location. Using Korean firm-level data, we find that highly productive firms are more likely than their less efficient counterparts to invest in tough markets and choose combined FDI strategy against either horizontal FDI or vertical FDI across different host countries. These findings, consistent with the recent theories in international economics, suggest that firm heterogeneity may play a significant role in FDI strategy as well as location decision.
The Single Nerve Fiber Action Potential and the Filter Bank—A Modeling Approach

Single fiber action potentials (SFAPs) from peripheral nerves, such as recorded with cuff electrodes, can be modelled as the convolution of a source current and a weight function that describes the recording electrodes and the surrounding medium. It is shown that for cuff electrodes, the weight function is linearly scaled with the action potential (AP) velocity and that it is, therefore, possible to implement a model of the recorded SFAPs based on a wavelet multiresolution technique (filterbank), where the wavelet scale is proportional to the AP velocity. The model resulted in single fiber action potentials matching the results from other models with a goodness of fit exceeding 0.99. This formulation of the SFAP may serve as a basis for model-based wavelet analysis and for advanced cuff design.
Coordinated changes in contractility, energetics, and isomyosins after aortic stenosis.

To investigate possible alterations of myocardial performance in young rats, cardiac hypertrophy was induced by stenosis of the ascending aorta (AS) in three groups of 25-day-old rats that were compared with three groups of sham-operated controls (C). The cardiac overload duration was 8-10 days, 1 mo, and 2 mo in groups 1, 2, and 3, respectively. Mechanics and energetics were studied in left ventricular papillary muscles, and determination of the V1 and V3 isomyosin pattern was achieved in the same papillary muscle. The majority of quantitative changes concerning the cardiac growth process, contractility, and isomyosin shifts occurred within 8-10 days of stenosis. At this point, the degree of left ventricular hypertrophy relative to C was 53 +/- 6%, whereas maximum unloaded shortening velocity (Vmax) decreased significantly (2.8 +/- 0.1 in C vs. 1.9 +/- 0.1 Lmax/s in AS), peak power output (Emax) decreased (1.8 +/- 0.3 in C vs. 0.6 +/- 0.1 in AS), and the curvature of Hill's hyperbola increased (1.3 +/- 0.4 in C vs. 2.0 +/- 0.7 in AS); moreover, the percent V1 isomyosin decreased significantly (98 +/- 1 in C vs. 51 +/- 3% in AS) and the percent V3 isomyosin increased significantly (2 +/- 1 in C vs. 26 +/- 2% in AS). Beyond 8-10 days of AS, additional changes in cardiac hypertrophy and in mechanical and biochemical parameters were less marked. (ABSTRACT TRUNCATED AT 250 WORDS)
Design of optimal-robust speed T-S fuzzy controller for a wounded rotor induction motor coupled with a nonlinear load

This paper introduces designing of a Takagi-Sugeno (T-S) fuzzy, state feedback controller so as to have optimal and robust full-range speed control over the wounded rotor induction motor. A slip energy recovery drive system, using 12-pulse converter and a shunt chopper is used as a modified system to drive a slip ring induction motor, which is coupled with a class of nonlinear uncertain load. Using parallel distributed compensator (PDC) scheme, the control law is obtained by minimizing linear quadratic regulator (LQR) cost function and in parallel maximizing the allowed norm bounded uncertainty of the system parameters. Finally, illustrative simulation results represented to validate the performance of the proposed controller.
Rents, learning and risk in the financial sector and other innovative industries

We study innovative industries subject to two risks. First, it is uncertain whether the innovation is strong or fragile. Second, it is difficult to monitor managers, which creates moral hazard and agency rents. As time goes by and profits are observed, beliefs about the industry are updated. As long as no default occurs, confidence builds up. Initially this spurs growth. But increasingly confident managers end up requesting large rents, curbing the growth of the industry. If rents become too high, investors give up on incentives, and failure rates rise. If the innovation is fragile, eventually there is a crisis. Our model captures stylized facts of the recent financial innovation wave and generates new implications for risks, returns and rents.
Mobility and Earnings in Ethiopia's Urban Labor Markets, 1994-2004

An analysis of panel data on individuals in a random selection of urban households in Ethiopia reveals large, sustained, and unexplained earnings gaps between public and private, and formal and informal sectors over the period 1994-2004. The authors have no formal evidence whether these gaps reflect segmentation of the labor market along either of these divides. In other words, they cannot show whether they are at least in part due to impediments to entry in the higher wage sector. But they do have evidence that, if segmentation explains any part of the observed earnings gaps, then it could only have weakened over the survey decade. The authors find, first, that the rate of mobility increased between the two pairs of sectors. Sample transition rates grew across survey waves, while state dependence in sector choice decreased. Second, the sensitivity of sector choice to earnings gaps increased over the same period. In particular, the role of comparative earnings in selection into the informal sector was evident throughout the survey decade and increased in magnitude over the second half of the period.
Four-dimensional spectral tomography of carbonaceous nanocomposites.

There is considerable interest in the adhesion of polymers to carbon nanotubes for nanocomposite applications. (1-4) One example is multiwalled carbon nanotubes (MWCNTs) dispersed in nylon 6,6. (5) We will show that high-contrast tomographic reconstructions can be created from plasmon-loss electrons that show the three-dimensional structural complexity of the MWCNT-nylon composite at the nanoscale. Further, by recording a series of energy-loss images at successive tilts, it is possible to interrogate subvolumes to extract energy-loss spectra from the reconstructed "volume spectra".
Packet transfer scheduling scheme with throughput compensated considering wireless conditions

With the rapid diffusion of mobile terminals in recent years, the number of the Internet access from mobile terminals has been drastically increasing. In this environment, the condition of channels changes greatly due to moving terminal locations, and transmission errors frequently occur as a result. Retransmitting the dropped packet can usually correct the errors. However, when burst errors occur, retransmission repeats and the throughput of the whole base station degrades. Since the throughput per terminal depends on the channel condition, the throughput between terminals differs each other. This paper aims at improving the throughput at base stations and the throughput unfairness per terminal, and proposes a new packet transfer scheduling scheme with throughput compensated considering radio conditions. Our proposed method consists of two mechanisms. One is a throughput control mechanism which compensates the throughput to each terminal. The other is a transmitting control mechanism which inspects fine channels where little error occurs. Cooperating these two mechanisms, if a channel condition is good, packets belonging to this channel is prioritized for the purpose of higher transmission efficiency. Meanwhile, the proposed test protocol data unit (PDU), one of our proposals, is sent to a bad channel to confirm if the channel is restored or not. After confirming the restoration, the degraded throughput is compensated. The use of the test PDU controls the channel properly without wasting radio link bandwidth and can achieve the fairness between each terminal. Computer simulations have evaluated the performance of our proposed method. Our proposed method is verified its efficiency with the results showing the improvement of the throughput at base stations and unfairness per mobile terminal.
Studies on PCR-Based Rapid Detection Systems for Salmonella spp.

1.1 Using molecular biological methods to identified Salmonella spp. As the industrialization had made food supply to exceed demand, more and more consumers were interested in ‘Delicious food’ than ‘Good quality food’ today and they ask for not only taste but also safety. Microbiological safety is one of the most critical factors for ensuring safe food supply. Fig 1. is a flow chart of traditional detection procedure for Salmonella spp. , showing that it takes about one week. Therefore, a rapid screening method using PCR is the basis of most molecular diagnostic laboratories. As the field of molecular pathology becomes more accessible to practicing pathologists, a working knowledge of PCR techniques is necessary related to biological safety of food is very essential in food industry. Salmonella spp. are an important cause of food-borne infections throughout the world, and the availability of rapid and simple detection techniques is critical for the food industry.
The long-term benefits of organizational resilience through sustainable business practices

Research summary: Prior work on the benefits of business sustainability often applies short-term causal logic and data analysis. In this article, we argue that the social and the environmental practices (SEPs) associated with business sustainability not only contribute to short-term outcomes, but also to organizational resilience, which we define as the firm's ability to sense and correct maladaptive tendencies and cope positively with unexpected situations. Because organizational resilience is a latent, path-dependent construct, we assess it through the long-term outcomes, including improved financial volatility, sales growth, and survival rates. We tested these hypotheses with data from 121 U.S.-based matched-pairs (242 individual firms) over a 15-year period. We also tested, but did not find support for, the relationship between SEPs and short-term financial performance. Managerial summary: Most managers look for short-term financial benefits to justify socially responsible or sustainable practices. In this article, we argue that such practices also help firms become more resilient, which helps them avoid crises and bounce back from shocks. However, it is difficult to measure the avoidance of shocks, so we analyzed long-term outcomes. We show that firms that adopt responsible social and environmental practices, relative to a carefully matched control group, have lower financial volatility, higher sales growth, and higher chances of survival over a 15-year period; yet, we were unable to find any differences in short-term profits. We hope this research provides good reasons for firms to practice sustainability beyond the pursuit of short-term profits. Copyright © 2015 John Wiley & Sons, Ltd.
Effect of mechanical toothbrushing combined with different denture cleansers in reducing the viability of a multispecies biofilm on acrylic resins.

PURPOSE To investigate the efficacy of immersion and brushing with different cleansing agents in reducing the viability of multispecies biofilm on acrylic resins. METHODS Lucitone 550 (L) and Tokuyama Rebase Fast II (T) specimens (10 x 2 mm) were prepared, sterilized, and inoculated with a suspension of Candida albicans, Candida glabrata, and Streptococcus mutans. Specimens were incubated for 48 hours at 37 degrees C for biofilm formation. Then, they were divided into groups (n = 12) and subjected to brushing or immersion for 10 seconds in distilled water (W), 0.2% peracetic acid-Sterilife (Ac), 1% chlorhexidine digluconate (CHX), 1:1 water/dentifrice solution (D), 1% sodiumhypochlorite (NaOCl), and sodium perborate/Corega Tabs (Pb). Viable microorganisms were evaluated by the XTT assay and colony counts (cfu/mL). Data were performed by ANOVA and Tukey test with 5% significance level. RESULTS The multispecies biofilm on L and T were killed by brushing or immersion in Ac, CHX, and NaOCl for only 10 seconds.
A comparative study of the neurophysiologicalremote effects of differentresistive staticfacilitation techniques on the flexor carpi radialis H-reflex.

Resistive static contraction facilitation technique applied by manual resistance using a proprioceptive neuromuscular facilitation patternin the mid-range pelvic posterior depression technique(RSCPDT) or anterior elevation technique (RSCAET) with the subject on the affected side produces greater increase in range of motion of remote parts.However, few studies have providedevidences for neurophysiological remote effectsof resistive static exercise that consider the direction of resistance force. The purpose of this study was to clarify therebound effects of RSCPDT on the time-course of excitability of the flexor carpi radialis (FCR) H-reflex in comparison withRSCAET as an opposite direction of resistance force. Six healthy subjects were randomly assigned two groups: the RSCPDT (n = 3)andRSCAET group (n = 3) groups. Repeated FCR H-reflexes with small M-waves (1 Hz) were sequentially elicited in a row without interval for a period of 220 s. The repeated ANOVA revealed thatneurophysiologicalrebound effects induced by RSCPDT on the FCR H-reflex causea significant initial inhibition phase during RSCPDT and a significant subsequent facilitatory phase after RSCPDTwhen compared toRSCAET. We named those phenomena as remote rebound effects (RRE). These results suggest that the neurophysiological RREof resistive static contractionof pelvic muscles on the FCR H-reflex may depend on the direction of resistance. The RSCPDTis a specific resistive exercise to induce RRE.