Miracle-dz/UniFAR-FTUs huggingface dataset:
Gain Enhancement of Wideband Metamaterial-Loaded Loop Antenna With Tightly Coupled Arc-Shaped Directors

A wideband and unidirectional loop antenna with enhanced and stable gain is presented. To reduce the size of the antenna, the loop is loaded with three mu-negative (MNG) metamaterial unit-cells. The proposed unit-cells consist of a series-gap capacitor and a shunt meandered floating inductor. The series capacitive loading is used to excite the zeroth order resonance (ZOR) of the MNG unit-cell, whereas the floating inductor is used to improve impedance matching. To enhance the front-to-back-ratio (FBR) of the antenna and widen its operating bandwidth, the loop is loaded with a tuning slot in the vicinity of the loaded unit-cells. To overcome the low gain of the antenna at frequencies above the ZOR and thus obtain a stable gain, two tightly coupled dumbbell and arc-shaped directors are proposed. The shape and operation of these directors are inspired by the cylindrical capacitor, which achieves higher coupling compared to a planar capacitor with the same area. The antenna achieves a compact size of $0.25\lambda _{0} \times 0.29\lambda _{0}$ with a wide fractional bandwidth of 34% at 0.76–1.07 GHz, and peak measured gain and FBR values of 4.5 dBi and 16 dB, respectively.
Redetermination of Zn2Mo3O8

The crystal structure of dizinc trimolybdenum(IV) octaoxide, Zn2Mo3O8, has been redetermined from single-crystal X-ray data. The structure has been reported previously based on neutron powder diffraction data [Hibble et al. (1999 ▶). Acta Cryst. B55, 683-697] and single-crystal data [McCarroll et al. (1957 ▶). J. Am. Chem. Soc. 79, 5410–5414; Ansell & Katz (1966 ▶) Acta Cryst. 21, 482–485]. The results of the current redetermination show an improvement in the precision of the structural and geometric parameters with all atoms refined with anisotropic displacement parameters. The crystal structure consists of distorted hexagonal-close-packed oxygen layers with stacking sequence abac along [001] and is held together by alternating zinc and molybdenum layers. The Zn atoms occupy both tetrahedral and octahedral interstices with a ratio of 1:1. The Mo atoms occupy octahedral sites and form strongly bonded triangular clusters involving three MoO6 octahedra that are each shared along two edges, forming a Mo3O13 unit. All atoms lie on special positions. The Zn atoms are in 2b Wyckoff positions with 3m. site symmetry, the Mo atoms are in 6c Wyckoff positions with . m. site symmetry and the O atoms are in 2a, 2b and 6c Wyckoff positions with 3m. and . m. site symmetries, respectively.
Global and regional parameters to visualize the 'best' PEEP during a PEEP trial in a porcine model with and without acute lung injury.

BACKGROUND Setting the optimal level of positive end-expiratory pressure (PEEP) in critically ill patients remains a matter of debate. "Best" PEEP is regarded as minimal lung collapse and overdistention to prevent lung injury. In this study, global and regional variables were evaluated in a porcine model to identify which variables should be used to visualize "best" PEEP. METHODS Eight pigs (28-31 kg) were studied during an incremental and decremental PEEP trial before and after the induction of acute lung injury (ALI) with oleic acid. Arterial oxygenation, compliance, lung volume, dead space, esophageal pressure and electrical impedance tomography (EIT) were recorded at the end of each PEEP step. RESULTS After ALI, "best" PEEP was comparable at 15 cmH2O between regional compliance of the dorsal lung region by EIT and the global indicators: dynamic compliance, arterial oxygenation, alveolar dead space and venous admixture. After ALI, the intratidal gas distribution was able to detect regional overdistention at 15 cmH2O PEEP. "Best" PEEP based on transpulmonary pressure was lower and no optimal level could be found based on lung volume measurements alone. In addition, the recruitment phase significantly improved end-expiratory lung volume, PaO2, venous admixture and regional and global compliance, both in ALI and the "healthy" lung. CONCLUSION Most of the evaluated parameters indicate comparable 'best' PEEP levels. However, a combination of these parameters, and especially EIT-derived intratidal gas distribution, might provide additional information. The application of lung recruitment was beneficial in both ALI and the "healthy" lung.
Technology, time and transition in higher education – two different realities of everyday Facebook use in the first year of university in the UK

Within the range of websites and apps that are part of first-year undergraduates' digital environments, the social network site Facebook is perhaps the most popular and prominent. As such, the ubiquitous nature of Facebook in the higher education landscape has drawn much attention from scholars. Drawing on data from a longitudinal connective ethnography, this paper uses two ethnographic stories to explore further the realities of social media usage by newly enrolled undergraduate students in a UK university. These ethnographic stories tell two differing tales – one of connection, intent, use and organisation – the other, of disconnection, disengagement and unrealised expectations. Facebook structures students' time at university both through connection and disconnection practices and examples of these are presented under two headings ‘I'm always on it’ and ‘Being academic’. First-year student experiences of Higher Education and social media use are not uniform, but nuanced and responsive to their specific ecosocial systems.
A Fast Poisson Solver of Arbitrary Order Accuracy in Rectangular Regions

In this paper we propose a direct method for the solution of the Poisson equation in rectangular regions. It has an arbitrary order accuracy and low CPU requirements which makes it practical for treating large-scale problems. The method is based on a pseudospectral Fourier approximation and a polynomial subtraction technique. Fast convergence of the Fourier series is achieved by removing the discontinuities at the corner points using polynomial subtraction functions. These functions have the same discontinuities at the corner points as the sought solution. In addition to this, they satisfy the Laplace equation so that the subtraction procedure does not generate nonperiodic, nonhomogeneous terms. The solution of a boundary value problem is obtained in a series form in O(N log N) floating point operations, where N2 is the number of grid nodes. Evaluating the solution at all N2 interior points requires O(N2 log N) operations.
Permutation-Based Noncoherent Space-Time Codes With Analog Energy Detection for IR-UWB Communications With PPM

In this paper, we consider the problem of space-time (ST) coding for the noncoherent ultra-wideband (UWB) systems with pulse position modulation (PPM). In particular, we propose the first known family of ST codes that lends itself to optimal decoding with the energy detectors. Energy detection avoids the sampling of the received signal where the sampling rates can be prohibitively high and escapes from the challenging task of estimating the dense multi-path UWB channel. In the absence of design criteria that are adapted to the problem under consideration, we derive two novel design criteria and propose the novel construction accordingly. The proposed code is based solely on permutations, and hence it does not introduce any constellation expansion on the totally-real and unipolar PPM signal set. In other words, the components of the constructed codewords are limited to either zero or one indicating the absence or presence of an UWB pulse in the corresponding PPM slot, respectively. The above characteristics result in a remarked simplicity of the ST encoder/decoder making it an appealing solution to low-cost and low-power UWB systems. For a system equipped with n transmit antennas, we prove that the proposed code is capable of achieving a full transmit diversity order with M-PPM constellations for M>n+1 while transmitting at the rate of (1/n)log2 (nM-1) bits per channel use.
Indigenous Peoples' Claims to Cultural Property: A Legal Perspective

This essay examines the legal dimensions of indigenous peoples' claims to cultural property. Law and anthropology often address issues of cultural property in different ways. Anthropologists seek to understand cultural property within the context of the indigenous cultures themselves, while lawyers attempt to translate concepts of indigenous property into the language of Euroamerican law. Indigenous peoples' claims to cultural property provide a compelling example of the need for new legal relationships to be articulated between Indian nations and Euroamerican society.
Impairing existing declarative memory in humans by disrupting reconsolidation

During the past decade, a large body of research has shown that memory traces can become labile upon retrieval and must be restabilized. Critically, interrupting this reconsolidation process can abolish a previously stable memory. Although a large number of studies have demonstrated this reconsolidation associated amnesia in nonhuman animals, the evidence for its occurrence in humans is far less compelling, especially with regard to declarative memory. In fact, reactivating a declarative memory often makes it more robust and less susceptible to subsequent disruptions. Here we show that existing declarative memories can be selectively impaired by using a noninvasive retrieval–relearning technique. In six experiments, we show that this reconsolidation-associated amnesia can be achieved 48 h after formation of the original memory, but only if relearning occurred soon after retrieval. Furthermore, the amnesic effect persists for at least 24 h, cannot be attributed solely to source confusion and is attainable only when relearning targets specific existing memories for impairment. These results demonstrate that human declarative memory can be selectively rewritten during reconsolidation.
Online Hookup Sites for Meeting Sexual Partners among Men Who Have Sex with Men in Rhode Island, 2013: A Call for Public Health Action

Frequent use of websites and mobile telephone applications (apps) by men who have sex with men (MSM) to meet sexual partners, commonly referred to as “hookup” sites, make them ideal platforms for HIV prevention messaging. This Rhode Island case study demonstrated widespread use of hookup sites among MSM recently diagnosed with HIV. We present the advertising prices and corporate social responsibility (CSR) programs of the top five sites used by newly diagnosed HIV-positive MSM to meet sexual partners: Grindr, Adam4Adam, Manhunt, Scruff, and Craigslist. Craigslist offered universal free advertising. Scruff offered free online advertising to selected nonprofit organizations. Grindr and Manhunt offered reduced, but widely varying, pricing for nonprofit advertisers. More than half (60%, 26/43) of newly diagnosed MSM reported meeting sexual partners online in the 12 months prior to their diagnosis. Opportunities for public health agencies to promote HIV-related health messaging on these sites were limited. Partnering with hookup sites to reach high-risk MSM for HIV prevention and treatment messaging is an important public health opportunity for reducing disease transmission risks in Rhode Island and across the United States.
“I Needed to Get Out of My Korean Bubble”: An Ethnographic Account of Korean American Collegians Juggling Diversity in a Religious Context

This ethnographic account highlights four Korean American students deciding between participating in a racially diverse campus fellowship versus an ethnically homogeneous group. Despite religious convictions about the importance of diversity, students experienced tensions between their ideals concerning diversity and the difficulty of actually implementing such values. Findings show how religion can mediate how students make sense of race relations and campus diversity. Implications for cross-racial interaction and the campus climate for diversity are discussed. [religion, Asian American, Korean American, diversity, race relations, campus climate, higher education]
The Significance of Combined Measurement of p53 Antibody and other Tumor Markers for Colorectal Cancer after Curative Resection.

BACKGROUND/AIMS Though serum p53 antibody has been widely used, it is mentioned that it is not related to clinical parameters of colorectal cancer (CRC) and has no prognostic significance in long-term follow-up. The aim of this study was to explore the possibility to increase the value of p53 antibody in combination with carcinoembryonic antigen (CEA) and CA19-9 for post operation follow up. METHODOLOGY One hundred twenty-eight patients with primary CRC who underwent surgery were enrolled in this study. Serum p53 antibodies, CEA and CA19-9 were measured before and after the surgery and their impact on CRC staging patient survival. DNA was extracted from colorectal cancer tissue and KRAS mutation analysis was determined by direct sequencing. RESULTS Thirty seven point five patients were positive for serum p53 antibodies before the operation. Total 67.2% patients were positive with any tumor markers, but it was only 3.9% that were positive with all markers. There was no association between KRAS mutation and p53 antibody level. CONCLUSIONS The combined use of tumor markers can be an effective screening method for detection of colorectal cancer. If serum p53 antibody level continues to be positive for long after resection, the case should require subsequent intense follow-up.
An 8b extremely area efficient threshold configuring SAR ADC with source voltage shifting technique

An extremely low power and area efficient threshold configuring ADC (TC-ADC) for time interleaved ADC is proposed. The threshold configuring comparator (TCC) performs a binary search. 5b conversion is carried out by TCC with source voltage shifting technique. Additional 2b resolution is achieved by the proposed threshold interpolation (TI) technique with only 15% power overhead. Prototype ADC in 40nm CMOS occupies a core area of only 0.0038mm2 and when calibration circuit included, 0.0058 mm2. With a supply voltage of 0.7V, the ADC achieves 7.0 ENOB with 24MS/s. Peak FoM of 9.8fJ/conv. is obtained at 0.5V supply, which is over 15x improvement compared with conventional TC-ADC.
Relationship between Self-Restraint and Major Depression in Methamphetamine Consumers Visiting Mehrshad Addiction Treatment Center of Tehran

The aim of conducting this research is surveying the relationship between self-restraint and major depression in consumers of methamphetamine. The research method was descriptive-correlative. 180 individuals participated in this research by the use of convenience sampling. Data collection tools were Beck depression inventory (BDI) and self-restraint questionnaire. Pearson correlation coefficient was used for data analysis. Results showed that there was a negative and significant correlation between self-restraint and major depression. Other results showed that there was a positive and significant correlation between dimensions of suppression of aggression, impulse control, consideration of others and major depression, and there was a negative and significant correlation between responsibility and major depression.
Mental health and risk behaviours among 15-years old students - the Mokotów study

Introduction. The aim of the study was to examine prevalence of mental health problems, drug abuse and other risk behaviours among adolescents. Methods. The questionnaire was administrated to 15-years old students (n=1493) in a random sample of middle schools classes from three Warsaw districts: Mokotow, Ursynow and Wilanow. Results. About 17-19% of students are at risk, because of depressive symptoms and other emotional problems. In the past year 40% of students performed at least one delinquent beha- viour and half of adolescents were involved in violence (physical or psychological) against others. About 30% adolescents used legal or illegal psychoactive substances, including mari- huana, alcohol or tobacco. Drug abuse was strongly connected with other risk behaviours (violence, delinquency). Everyday smoking was associated with symptoms of poor mental health. Conclusions. The relationship between symptoms of poor mental health and drug abuse are complex and they require further research.
The organization and function of the vomeronasal system.

The vomeronasal (VN) organ is a chemoreceptive structure situated at the base of the nasal septum of most terrestrial vertebrates. Structurally, the VN system is very similar to the main olfactory system. Functionally, the VN and main olfactory systems have different roles in the execution of several species-typical behaviors that depend on reception of chemo­ signals emitted by conspecifics or prey. Although the VN organ (Jacobson's organ) was discovered and described in the early part of the nineteenth century and occasional studies of its morphology, functional significance, and physiology appeared in the scientific literature during the first half of this century, the current explosion of interest can be attributed to the simultaneous emergence of two ideas in the early 1970s. During the 1 950s and 1 960s, behavioral endocrinologists had discovered and attempted to explain several pheromonal effects in mice. These pheromonal effects were found to be under the control of chemical stimuli in the urine of conspecifics and were absent in mice with their olfactory bulbs removed. By 1970 there was a general consensus that the pheromonal effects depended on a functional olfactory system. At the time it was known that the bipolar neurons of the olfactory epithelium terminated in the glomerular layer of the main olfactory bulb and that the bipolar neurons of the VN organ terminated in the accessory olfac­ tory bulb; however, scant attention was given to the fact that the olfactory bulbs are part of the eNS and therefore not simply a relay in the olfactory pathway and that olfactory bulbectomy denervated both main and accessory olfactory systems.
Experiences with vaccination and epidemiological investigations on an anthrax outbreak in Australia in 1997

Between January and February 1997, there was a severe outbreak of anthrax on 83 properties in north‐central Victoria, Australia. Vaccination was used as a major tool to control the outbreak by establishing a vaccination buffer zone 30 km by 20 km. In all, 78,649 cattle in 457 herds were vaccinated in a three week program. In the face of the outbreak, there was a delay before vaccination was able to stop deaths. In the 10 days following vaccination 144 cases of confirmed anthrax occurred and 38 cases occurred more than 10 days after vaccination. When all cattle on at‐risk properties were revaccinated in October and early November 1997, there were only two confirmed cases of anthrax in vaccinated seven and nine month old calves in the following anthrax season. Investigations into the epidemiology of the outbreak were unable to establish a single major association for the spread of the disease by flies, biting insects, carrion scavengers, wind, manufactured feed, milk factory tanker routes, veterinary visits, animal treatments, movements of personnel between farms or burning of carcases. The weather conditions in the outbreak area were part of a long dry spell with periods of high daily and night temperatures, continuing high humidity over the period and higher than normal soil temperatures. It is possible that extensive earth works in the district involving irrigated pasture renovation and water channel and drainage renovation could have disturbed old anthrax graves. It is postulated that these works released spores that were dispersed in the preceding wet winter across poorly drained areas that formed the axis for the outbreak. The earth moving renovations establishing irrigation in the area were conducted in the late 1890s, and before the occurrence of anthrax outbreaks were recorded. The axis of the outbreak was the major stock route for cattle and sheep moving from southern Victoria to nothern Victoria and southern New South Wales, and undoubtedly there would have been extensive anthrax outbreaks before vaccine became available in the 1890s. In respect of other outbreaks, the events in Victoria most resembled outbreaks of anthrax recorded in the United States of America in the 1950s, 1960s and 1970s.
The Effectiveness of Brand Placements in the Movies: Levels of Placements, Explicit and Implicit Memory, and Brand-Choice Behavior

Product placements within a movie are often treated as a binary variable: either they are present or absent. However, placements can occur at many different levels ranging from a simple background prop to the product being an instrumental part of the story. The influence of 3 different levels of brand placements on explicit and implicit memory for the brand, implicit choice behavior, and attitudes toward the brand were examined. The results confirmed that levels of brand placements influence recognition of the target brand and attitudes toward the brand. On the other hand, simple placement of the brand within the movie influenced implicit memory and the implicit choice task. The implications of the current study’s findings were discussed.
A Segmentation and Graph-Based Video Sequence Matching Method for Video Copy Detection

We propose in this paper a segmentation and graph-based video sequence matching method for video copy detection. Specifically, due to the good stability and discriminative ability of local features, we use SIFT descriptor for video content description. However, matching based on SIFT descriptor is computationally expensive for large number of points and the high dimension. Thus, to reduce the computational complexity, we first use the dual-threshold method to segment the videos into segments with homogeneous content and extract keyframes from each segment. SIFT features are extracted from the keyframes of the segments. Then, we propose an SVD-based method to match two video frames with SIFT point set descriptors. To obtain the video sequence matching result, we propose a graph-based method. It can convert the video sequence matching into finding the longest path in the frame matching-result graph with time constraint. Experimental results demonstrate that the segmentation and graph-based video sequence matching method can detect video copies effectively. Also, the proposed method has advantages. Specifically, it can automatically find optimal sequence matching result from the disordered matching results based on spatial feature. It can also reduce the noise caused by spatial feature matching. And it is adaptive to video frame rate changes. Experimental results also demonstrate that the proposed method can obtain a better tradeoff between the effectiveness and the efficiency of video copy detection.
Psychometric Properties of the Children’s Depression Inventory

The purpose of this study was to investigate psychometric properties of the Children’s Depression Inventory within a nonclinical and longitudinal sample (8th and 12th grades). Using the Rasch rating scale, most items represented one dimension. There was adequate separation among items and no overlap between ranges of item difficulties with latent trait parameters.
Homo narrans: the role of narration in the emergence of human language

What is at stake in this paper is the origin of the human language from an evolutionary point of view. It is argued that the emergence of the narrative function started the process that led to the acquisition of the very specific properties the human language is endowed with. This hypothesis is compatible with our current knowledge of the last steps of hominid evolution, and it permits to understand the development of a novel level of organisation, specific to our species, in which socio-cultural laws replace, to a large extent, the socio-biological constraints governing all the rest of the animal kingdom.