Miracle-dz/UniFAR-FTUs huggingface dataset:
A metasurfaced surface-wave antenna with performance enhancement

Abstract A wideband and high gain Metasurface (MTS)-based surface-wave antenna with a monopole-like radiation pattern for wireless communication system is presented in this paper. The proposed antenna consists of a centre-fed circular patch antenna, an air substrate layer and a MTS-loaded superstrate. By the use of the slow-wave structure of the MTS, surface waves can effectively launch on the top surface of the superstrate. The diffraction of surface waves forms a monopole-like radiation pattern. With the introduction of a single ring of truncated MTS surrounding the circular patch, the radiating field of the circular patch antenna is constructively transformed to diffraction fields of surface waves, yielding an enhancement on bandwidth and gain. The proposed antenna with a low profile of 0.075 free-space wavelength achieves a 19.4% (4.69–5.7 GHz) bandwidth centred at 5.2 GHz and an average gain of 7.32 dBi.
Prediction of insertion loss of detached houses against road traffic noise using a point sound source model: Simplification of prediction formula F2012

In order to predict the equivalent continuous A-weighted sound pressure level (LAeq) of road traffic noise in areas facing roads, knowledge of the insertion loss of buildings against road traffic noise is needed. The authors previously proposed formula F2012 for predicting the insertion loss of detached houses against road traffic noise using a point sound source model. F2012 is applicable to the evaluation of the Environmental Quality Standards for Noise in Japan (EQS). F2012 is composed of four factors: direct sound Edir, reflections Eref , first diffractions Edif,1, and others Edif,2. However, it is not easy to find the values of the parameters for Eref and Edif,1 in spite of their smaller sound energies than Edir and Edif,2. A simple calculation is essential for the evaluation of EQS. Therefore, a simplification of F2012 is examined and the simplified formula F2012 is proposed in this paper. In addition, a means of simplifying the computation of F2012 is examined.
Assessment of lean practices in small and medium garment manufacturing companies in South-Western Nigeria

The Nigerian garment industry has significantly contributed to the Gross Domestic Product of the country. However, this multibillion naira, small and medium scale enterprises have a higher potential to generate huge revenue, provided lean manufacturing concepts are adopted. In this study, the awareness level and the adoption of lean concepts were assessed using a survey technique. In the survey, 40 complete responses were received by administering 60 copies of a structured questionnaire based on five-point Likert scale. By analyzing the responses using descriptive statistics and mean item score, it was deduced that teamwork is the most predominant lean concept that is currently been practiced in the South-Western Nigeria garment industry with the highest mean score of 3.63. Just-in-time supply, workforce commitment, daily schedule and product design have witnessed the influence of the implementation of lean practices. In the garment industry, the practice of the few lean concepts resulted in a significant improvement in the quality of the garments produced. However, a lack of understanding on how to implement the lean concepts has been a major barrier in this industry. Hence, comprehensive trainings, seminars and workshops for the key players in the industry are proposed to increase the knowledge and adoption of lean concepts.
Blind ptychography: uniqueness and ambiguities

Ptychography with an unknown mask and object is analyzed for general ptychographic measurement schemes that are strongly connected and possess an anchor. Under a mild constraint on the mask phase, it is proved that the masked object estimate must be the product of a block phase factor and the true masked object. This local uniqueness manifests itself in the phase drift equation that determines the ambiguity at different locations connected by ptychographic shifts. The proposed mixing schemes effectively connects the ambiguity throughout the whole domain such that a distinct ambiguity profile arises and consequently possess the global uniqueness that the block phases have an affine profile and that the object and mask can be simultaneously recovered up to a constant scaling factor and an affine phase factor.
Create or differentiate? Testing the boundary conditions of differentiation

One of the critical findings in recognition memory is the null list strength effect (LSE): Strengthening items does not hurt the performance of other studied items. Memory models were able to predict the null LSE by using differentiation, which states that repetitions of a single item accumulate into a single strong memory trace. A hypothesized boundary of differentiation is that repetitions in different contexts will create new memory traces instead of differentiating them. Three novel list strength experiments tested this hypothesis by repeating words across three different study lists, followed by a test of all studied lists. Results indicated that as list strength increased, there was both a null LSE and no change in the false alarm rate (FAR), which is contrary to the predicted strength based mirror effect. These two results in tandem provide a challenge for differentiation models. Simulations of three different REM model variants along with a modified version of BCDMEM indicated that retrieval expectations may be responsible for changes in the FAR in response to list strength.
Blowout Surge due to Interaction between a Solar Filament and Coronal Loops

We present an observation of the interaction between a filament and the outer spine-like loops that produces a blowout surge within one footpoint of large-scale coronal loops on 2015 February 6. Based the observation of the AIA 304 and 94 Å, the activated filament is initially embedded below a dome of a fan-spine configuration. Due to the ascending motion, the erupting filament reconnects with the outer spine-like field. We note that the material in the filament blows out along the outer spine-like field to form the surge with a wider spire, and a two-ribbon flare appears at the site of the filament eruption. In this process, small bright blobs appear at the interaction region and stream up along the outer spine-like field and down along the eastern fan-like field. As a result, a leg of the filament becomes radial and the material in it erupts, while another leg forms the new closed loops. Our results confirm that the successive reconnection occurring between the erupting filament and the coronal loops may lead to a strong thermal/magnetic pressure imbalance, resulting in a blowout surge.
Work-family culture dan organizational commitment karyawan wanita: Work-life balance sebagai mediator

Abstract The economy and education levels in Indonesia which continue to grow are not directly proportional to the increase in women employees. One of the factors that make Indonesian women underrepresented in the workforce is the family factor, women decided to leave work when they are married. This study aims to examine the effect of work-life balance in mediating the relationship between work-family culture and organizational commitment of women employees in the hope women employees are more committed to the organization because of the availability of supportive organizational culture. The instruments used are the work-family culture scale (∝ = 0.84), work-life balance (∝ = 0.88), and organizational commitment (∝ = 0.72). The sampling technique used was purposive sampling and the participants are 120 women employees in the banking industry. Data analysis used PROCESS Hayes model 4 (simple mediation). The results showed that work-life balance fully mediates the relationship between work-family culture and organizational commitment. This study provides an understanding of the importance of implementing a work-family culture to balance work and life demand in order to make employees more committed to the organization. Keywords: Female employees; organizational commitment; Work-family culture; Work-life balance Abstrak Tingkat ekonomi dan pendidikan di Indonesia yang terus tumbuh ternyata tidak berbanding lurus dengan bertambahnya tenaga kerja perempuan. Salah satu faktor kurangnya partisipasi pekerja perempuan di Indonesia adalah faktor keluarga yaitu perempuan memutuskan untuk keluar dari pekerjaan karena sudah berkeluarga. Penelitian ini bertujuan untuk mengetahui pengaruh work-life balance dalam memediasi hubungan work-family culture dan organizational commitment karyawan wanita sehingga diharapkan karyawan wanita lebih berkomitmen terhadap organisasi karena budaya organisasi yang mendukung. Instrumen yang digunakan adalah skala work family culture (∝= 0.84), work-life balance (∝ = 0.88), dan organizational commitment (∝= 0.72). Teknik sampling yang digunakan adalah purposive sampling dengan kriteria karyawan wanita di industri perbankan dan didapatkan 120 responden. Teknik analisis data menggunakan PROCESS Hayes model 4 (mediasi sederhana). Hasil penelitian menunjukkan bahwa work-life balance memediasi secara sempurna hubungan antara work-family culture dan organizational commitment. Studi ini memberikan pemahaman akan pentingnya menerapkan work-family culture untuk menyeimbangkan tuntutan kehidupan pekerjaan dan pribadi sehingga membuat karyawan lebih berkomitmen pada organisasi. Kata kunci: keseimbangan kehidupan kerja dan pribadi; komitmen organisasi; kultur organisasi ramah keluarga; tenaga kerja wanita
Doing gender and professional identity: inclusion and exclusion of female civilians in criminal investigations

ABSTRACT The number of civilian crime investigators (CIs) has been increasing among the police, a trend that is called civilianisation. However, conflicts have arisen from perceptions that civilian CIs undermine professional police efforts. The purpose of this study was to investigate the intersection of doing gender and professional identity in narratives on inclusion and/or exclusion in CIs’ professional practices. Because professional background and gender composition change with the civilianisation of the police, this study included interviews with 48 female CIs from Sweden. The study showed that aspects of belongingness and uniqueness interact in complex ways and conclude that the intersection of being a civilian CI and a woman is at the core, especially in narratives on exclusion. Taken together, this means that civilian CIs’ narratives are important to learn from and can help the police become aware of obstacles to and opportunities for civilian employees’ full participation in the criminal investigation practice. Aspects of belongingness and uniqueness are discussed to contribute knowledge of how gender and professional identity can be redone in a way that helps reduce future barriers to full inclusion of female and civilian CIs in police work.
The Anterior Cruciate Ligament: Principles of Treatment

The anterior cruciate ligament (ACL) is a crucial connective tissue in the knee joint (tibiofemoral joint). Although the surgical anatomy of this ligament has been studied and interpreted for decades, it remains a topic of discussion among surgeons. The ACL has two bundles, the anteromedial (AM) and the posterolateral (PL) bundle. ACL tears are among the most frequently sustained injuries to the tibiofemoral joint. The ACL is an important rotational stabilizer of the knee joint. The human knee joint can be classified as a complex structure, as it has many ligaments supporting its stability and ensuring required joint mobility. Previously, the outcomes of primary ACL surgery were poor; however, with time, the modalities have improved substantially. There are two methods of performing the reconstruction procedure, the single-bundle method, in which only the AM bundle is reconstructed, and the double-bundle method, in which both the AM and PL bundles of the ACL are reconstructed. Double bundle arthroscopic ACL reconstruction has been recognized as the gold standard procedure. The grafts used for the reconstruction procedure are the tendon of the patella graft and the grafts of the hamstrings. However, one of the drawbacks of performing this surgery is the development of complications, like osteoarthritis. This complication is observed majorly in sports professionals. This article aims to sum up the anatomy of the ACL, its regular tears, the various surgical aspects of managing it, and the advancement of treatment options in the past centuries. Although much has been achieved, detailed scientific studies should be carried out to improve the prognosis and decrease the risk of development of complications.
Point processes in forestry : an application to tree crown detection

In this research report, we aim at extracting tree crowns from remotely sensed images using marked point processes of discs and ellipses. Our approach is indeed to consider that the data are some realizations of a marked point process. Once a geometrical object is defined, we sample a marked point process defined by a density with a Reversible Jump Markov Chain Monte Carlo dynamics and simulated annealing to get the maximum a posteriori estimator of the tree crown distribution on the image. In a first part, we propose to review the basis of marked point processes and some of their examples used in forestry statistic inference. Then, we present two new models, with discs and ellipses, and discuss some improvements made in the optimization or in the simulation. Results are shown on high resolution aerial images of poplars provided by the French Forest Inventory (IFN), and synthetic images simulated with AMAP software (Bionatics, Digiplante project).
Quality Evaluation of Breakfast Cereal Meal Produced from Finger Millet (Eleusine coracana) and Roasted African Yam Beans (Sphenostylis stenocarpa) Flour Blends

This study was carried out to evaluate the qualities of breakfast cereal meals produced from blends of finger millet and toasted African yam beans flour. Flour samples of processed finger millet were blended with roasted African yam beans flour at substitution levels of 0, 10, 20, 30, and 40%. The blended flours were processed into breakfast cereal. The breakfast cereal products were subjected to proximate, vitamin, mineral, and microbial analyses (mould count and total viable count) and sensory evaluation. The result showed that there was a significant increase in the protein, moisture, carbohydrate, and energy content of the breakfast cereals with a corresponding decrease in the ash and fiber content as the level of African yam bean flour increased in the blends. The proximate composition result of the breakfast cereal product ranged from 11.65-37.78% for protein, 13.70-4.91% for ash, 3.00-7.20% for fiber, 2.88-3.88% for moisture, 0.74-1.00% for fat, 46.41-76.77% for carbohydrate and 360.98-380.36% for energy. Vitamin composition of the products ranged from 43.17-72.14 UI for vitamin A, 0.058-0.184 mg/100 g for vitamin B1, 0.058-0.184 mg/100 g for vitamin B2, 0.006-0.015 mg/100 g for vitamin B3 0.289-0.516 mg/100 g. Mineral composition ranged from 6.50-10.01 mg/100 g for iron, 355.53-454.37 mg/100 g for calcium, and 27.65-28.75 mg/100 g for phosphorus content. The total viable count ranged from 2.7 × 102 to 2.8 × 102 cfu/g while the mould was not detected in any of the samples. Results of sensory evaluation showed that FAY60 was the most acceptable breakfast cereal meal.
From the Minimum Path Cover Problem to Boosting Dynamic Programming on DAGs

A minimum path cover of a directed acyclic graph (DAG) is a minimum-cardinality set of paths covering all its nodes. It is a fundamental concept in combinatorics and computer science, with various applications in both theory (e.g., reachability queries) and practice (e.g., bioinformatics). In this paper we study the case when the size $k$ of a minimum path cover is small, which is often the case in practice, and make three main contributions: (1) We propose an algorithm for finding a minimum path cover of a DAG $(V,E)$ in $O(k|E|\log|V|)$ time, improving all known time-bounds when $k$ is small. An immediate consequence is an improved space/time tradeoff for reachability queries in arbitrary directed graphs; (2) We introduce a general technique for extending dynamic programming (DP) algorithms from sequences to DAGs. This is enabled by our minimum path cover algorithm, and works by mimicking the DP algorithm for sequences on each path of the minimum path cover. This technique generally produces algorithms that are slower than their counterparts on sequences only by a factor $k$. We illustrate this on two classical problems extended to labeled DAGs: longest increasing subsequence and longest common subsequence. For the former we obtain an algorithm with running time $O(k|E|\log |V|)$. This matches the optimal solution to the classical problem variant when, e.g., the input sequence is modeled as a path. We obtain an analogous result for the longest common subsequence problem; (3) We also apply this technique to the co-linear chaining problem, which has attracted interest recently in bioinformatics. This is a generalization of both of the above two problems. The algorithm for this problem turns out to be more involved, needing further ingredients, such as an FM-index tailored for large alphabets, and a two-dimensional range search tree modified to support range maximum queries.
Circular dispersive shock waves in colloidal media

A dispersive shock wave (DSW), with a circular geometry, is studied in a colloidal medium. The colloidal particle interaction is based on the repulsive theoretical hard sphere model, where a series in the particle density, or packing fraction is used for the compressibility. Experimental results show that the particle interactions are temperature dependent and can be either repulsive or attractive, so the second term in the compressibility series is modified to allow for temperature dependent effects, using a power-law relationship. The governing equation is a focusing nonlinear Schrodinger-type equation with an implicit nonlinearity. The initial jump in electric field amplitude is resolved via a DSW, which forms before the onset of modulational instability. A semi-analytical solution for the amplitude of the solitary waves in a DSW of large radius, is derived based on a combination of conservation laws and geometrical considerations. The effect of temperature and background packing fraction on the evolution of the DSW and the amplitude of the solitary waves is discussed and the semi-analytical solutions are found to be very accurate, when compared with numerical solutions.
Phase velocity estimation of diffusely scattered waves

Two methods are investigated for estimating the phase velocity of diffusely scattered seismic waves simultaneously arriving from different azimuths and recorded by a two-dimensional array of seismometers. The Hankel spectrum is the average of the frequency-wavenumber (FK) spectrum over all azimuths, while the wavenumber spectrum is derived by integrating the FK spectrum around a contour of constant phase velocity, i.e., a circle centered on the origin in the wavenumber plane. If the conventional estimate of the FK spectrum using the covariance matrix of the seismometer signals is integrated, a closed form for both the Hankel spectrum and the wavenumber spectrum may be found; the two spectra are very similar, the wavenumber spectrum being equal to the Hankel spectrum times the wavenumber. In spite of this similarity, however, we find that the two formulations have significantly different behavior for small wavenumbers, i.e., high phase velocities. In both cases there is a highest (true) velocity that can be estimated from the spectral maximum for a given array aperture (“velocity cut-off”). The Hankel spectrum estimates too high a velocity; for true wavenumbers below a certain limit, infinite velocity is estimated. The wavenumber spectrum, on the other hand, estimates too low a velocity, and there is an upper limit on the estimated velocity. An example illustrating these difficulties for the two methods is given for teleseismic P coda of an event recorded at the NORESS array in southern Norway: in spite of the problems, the analysis is able to demonstrate that the coda consists of two components; a coherent P -wave component with a high phase velocity and a diffuse S -wave component of low phase velocity. The cut-off and bias problem are investigated by numerical simulation for the NORESS array using azimuthal averaging and synthetic signals. The results confirm and quantify the cut-off problem at low wavenumbers and indicate that wavenumbers estimated from the Hankel and wavenumber spectra maxima bracket the true wavenumber, with the Hankel spectrum estimate being low (phase velocity too high) and the wavenumber spectrum estimate high. The bias of both methods decreases with increasing wavenumber (decreasing phase velocity) and they are both asymptotically unbiased. The wavenumber spectrum has a superior performance at low wavenumbers (high phase velocity), but the Hankel spectrum gives superior results at high wavenumbers (low phase velocity). The product of the linear wavenumber (= 1/wavelength) and the array aperture define “high” and “low” wavenumbers; for low wavenumbers, the product is 1 or less. In an Appendix, we find absolute lower bounds on the cut-offs analytically. The problems could be mitigated by using high resolution methods.
Commercial awareness and the law student journey into the legal profession – definitional challenges and the lived experience of the graduate interview

ABSTRACT Commercial awareness is a graduate employability skill that is highly valued by law firms, particularly the larger commercial law firms that dominate recruitment into the legal profession. However, it is a skill that students may struggle to understand and to demonstrate during the graduate recruitment process. This article examines the role of commercial awareness at a crucial point in the law student journey into the legal profession – the law firm graduate interview. This article presents data collected from an innovative two year mixed-methods research study involving law students at a post-92 university who were undergoing interviews with law firms. It provides insight into the “lived experience” of the law firm interview from a student perspective by considering how and when commercial awareness is assessed and the challenges and opportunities assessment presents. This study furthers our limited understanding of how law students define commercial awareness, comparing those definitions to those employed by the legal profession and considering the disconnect between students and law firms. This article argues that, in the context of commercial awareness, there is more that law firms and law schools can do to better support law students seeking employment in the legal profession.