Miracle-dz/UniFAR-FTUs huggingface dataset:
Opportunistic Multiuser Two-Way Amplify-and-Forward Relaying With a Multiantenna Relay

We consider the opportunistic multiuser diversity in the multiuser two-way amplify-and-forward (AF) relay channel. The relay, which is equipped with multiple antennas and a simple zero-forcing beamforming (ZFBF) scheme, selects a set of two way relaying user pairs to enhance the degree of freedom (DoF) and, consequently, the sum throughput of the system. The proposed channel-aligned pair scheduling (CAPS) algorithm reduces the interpair interference and keeps the signal-to-interference-plus-noise-power ratio (SINR) of user pairs that are interference-free when the number of user pairs becomes very large. When the number of user pairs grows fast enough with the system signal-to-noise ratio (SNR), a DoF equal to the number of relay antennas can be achieved. For a realistic number of user pairs, we propose an adaptive CAPS and an adaptive semi-orthogonal CAPS (SCAPS) to improve performance. Simulation results show that adaptive CAPS and adaptive SCAPS provide throughput gain in the low-to-mid SNR region.
Gender and Cross-Cultural Differences in Social Media Disclosures of Mental Illness

Cultural and gender norms shape how mental illness and therapy are perceived. However, there is a paucity of adequate empirical evidence around gender and cultural dimensions of mental illness. In this paper we situate social media as a "lens" to examine these dimensions. We focus on a large dataset of individuals who self-disclose to have an underlying mental health concern on Twitter. Having identified genuine disclosures in this data via semi-supervised learning, we examine differences in their posts, as measured via linguistic attributes and topic models. Our findings reveal significant differences between the content shared by female and male users, and by users from two western and two majority world countries. Males express higher negativity and lower desire for social support, whereas majority world users demonstrate more inhibition in their expression. We discuss the implications of our work in providing insights into the relationship of gender and culture with mental health, and in the design of gender and culture-aware health interventions.
Active Star Formation in the N11B Nebula in the Large Magellanic Cloud: A Sequential Star Formation Scenario Confirmed

The second largest H II region in the Large Magellanic Cloud, N11B has been surveyed in the near-IR. We present JHKs images of the N11B nebula. These images are combined with CO (1 → 0) emission-line data and with archival New Technology Telescope and Hubble Space Telescope WFPC2 optical images to address the star formation activity of the region. IR photometry of all the IR sources detected is given. We confirm that a second generation of stars is currently forming in the N11B region. Our IR images show the presence of several bright IR sources that appear to be located toward the molecular cloud as seen from the CO emission in the area. Several of these sources show IR colors with young stellar object characteristics, and they are prime candidates to be intermediate-mass Herbig Ae/Be stars. For the first time, an extragalactic methanol maser is directly associated with IR sources embedded in a molecular core. Two IR sources are found at 2″ (0.5 pc) of the methanol maser reported position. Additionally, we present the association of the N11A compact H II region to the molecular gas, where we find that the young massive O stars have eroded a cavity in the parental molecular cloud, typical of a champagne flow. The N11 region turns out to be a very good laboratory for studying the interaction of winds, UV radiation, and molecular gas. Several photodissociation regions are found.
Individual Variability in the Discrimination of Audiovisual Spontaneous vs . Acted Expressive Speech

Though a very large majority of studies focused on expressive speech have used acting as a convenient method for obtaining utterances with the same phonetic contents expressing various affects, the reliability of such material for the modeling of vocal expressions of spontaneous expressive speech has come into debate during the last decade (Campbell, 2000). Such reservations have incited a growing number of speech and affects researchers to look for spontaneous corpora (see for instance Campbell, 2004). On the other hand, collection of acted corpora has gone deeper into the acting process with elicitation-based approaches designed to obtain more natural acted speech (Enos & Hirschberg, 2006).
Cell size changes in the lateral geniculate nuclei of normal and monocularly deprived cats treated with 6-hydroxydopamine and/or norepinephrine

Given the proposed role of catecholamines in controlling cortical plasticity in the cat (Kasamatsu, T., J. D. Pettigrew, and M. Ary (1979) J. Comp. Neurol. 185: 163–182), we were interested in whether evidence of such control also could be found in the dorsal lateral geniculate nucleus. We undertook geniculate cell size measurements in 26 normal or monocularly deprived cats, 23 of which had been used in cortical recording studies concerned with catecholamine-induced plasticity. For animals grouped according to experimental treatments, the results can be summarized as follows: (1) in visually normal animals, neither intraventricular injections of 6-hydroxydopamine (6- OHDA) nor local perfusions of norepinephrine (NE) cause changes in geniculate cell size. (2) In otherwise untreated kittens, 1 week of monocular deprivation begun in the 6th week of life results in quite obvious changes in geniculate cell size. (3) Intraventricular injections of 6-OHDA do not appear to prevent deprivation-induced changes in geniculate cell size. (4) Older NE-treated kittens and adult cats that are monocularly deprived for a brief period either late in the critical period or after the critical period has ended do not show deprivation-induced changes in geniculate cell size in either hemisphere. (5) In younger kittens which had been first injected with 6- OHDA intraventricularly and then monocularly deprived for a brief period early in the critical period, there is no evidence to suggest that a local perfusion of NE enhances deprivation-induced changes in geniculate cell size.
Dynamic Mean Variance Analysis

We analyze the conditional versions of two closely connected mean-variance investment problems, the replication of a contingent claim on the one hand and the selection of an efficient portfolio on the other hand, in a general discrete time setting with incomplete markets. We exhibit a positive process h which summarizes two pieces of economically meaningful information. As a function of time, it describes the time dimension of the investment opportunity set through its link with the notion of dynamic Sharpe ratio. As a function of the states of the world, it can be used as a correction lens for myopic investors, and it reveals the gap between static and dynamic mean-variance investment strategies. A short sighted investor who corrects the probability distribution with the help of h acts optimally for long horizons. We describe the dynamic mean-variance efficient frontier conditioned on the information available at a future date in the form of a two fund separation theorem. The dynamic Sharpe ratio measures the distance from of an investment strategy to the efficient frontier. We explain how optimal dynamic Sharpe ratios aggregate through time and we study the time consistency rules which efficient portfolios must follow. We investigate the effect of a change of investment horizon, in particular we show that myopia is optimal as soon as the process h is deterministic.
Statehouse Mosaics and the American Electorate: How State Legislatures Affect Political Participation

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The Brokered Exuberance of the Middle Class: An Ethnographic Analysis of Iran's 2009 Green Movement

Based on ethnographic fieldwork and participant observation, this article moves from a microscopic to a wide-angle view to explain the dynamics of the 2009 post-election Green movement in the Islamic Republic of Iran: how it manifested, why it weakened, and who participated. After mapping out the protest wave, I make three main arguments. First, pre-electoral campaigns created spaces for interaction rituals of "brokered exuberance" among participants in public rallies that lowered perceptions of risk and spilled over into contentious protest after the election. Second, ordinary, non-networked Iranians utilized face-to-face interaction to broaden and recharge the protest wave, while Internet activism confused as much as coordinated the organization of street protests. Third, the social power and political orientation of Green protestors were connected to the increased relative size of the middle class in Iran, which had been empowered and enlarged through the state's developmental efforts over the past two.
NFPA: Network function performance analyzer

With the soar of Software Defined Networking planning a network service becomes harder of a task than ever before. Selecting traditional network elements that provide the best value for money given the performance requirements and the allocated budget is not the only option today: one might also take the software solution on generic hardware alternative. The problem is that the set of available solutions and the possible combinations of software and hardware components in this nowadays' alternative is frustratingly vast while the decision maker lacks any clear benchmarking comparison between the existing options. Our solution presented in this paper provides an answer to this critical need: we propose a benchmarking tool that allows the user to measure the important performance metrics of any network function realized on any hardware and software combination, and then to compare the results on a web interface with those of all the setups collected in our database.
Exchange rate volatility and exports: the case of emerging East Asian economies.

This thesis provides an empirical analysis of the impact of exchange rate volatility on the exports of five emerging East and South East Asian economies; China, Indonesia, Malaysia, the Philippines and Thailand. The countries under consideration are the main members of the impending ASEAN-China Free Trade Area (ACFTA), and the options for a closer monetary integration including proposais for the eventual formation of a currency union within the region are currently an active area of research and policy debate. Therefore, an understanding of the degree to which exchange rate volatility affects their export activity is important for setting the optimal exchange rate policy in emerging East Asian countries. Recognizing the specificity of the exports of the sample countries which is different from those of industrialised countries this study employs an augmented generalised gravity model instead of a pure gravity model. A GMM-IV approach is used to overcome the potential econometric problems of endogeneity and heteroskedasticity. In addition, this study is the first to conduct the recently developed panel unit-root and cointegration tests to verify the existence of a long-run stationary relationship between real exports and exchange-rate volatility. The benchmark measure of the exchange rate volatility which represents uncertainty is the standard deviation of the first difference of the logarithmic exchange rate. In order to check the robustness of the results two additional measures of exchange rate volatility - the moving average standard deviation of the logarithmic exchange rate (MASD) and the conditional exchange rate volatility which follows a Generalised Autoregressive Conditional Heteroscedascity process (GARCH) are also used to estimate the model. The results provide a strong evidence that exchange rate volatility has an economically and statistically significant negative impact not only on the overall exports to the world market but also on the intra-regional exports of emerging East Asian countries. In addition, the results indicate that the adverse effect of exchange rate volatility on exports is not a linear and is conditional on the financial sector development of the exporting country: the more financially developed an economy is, the less its exports are adversely affected by exchange rate volatility. These results are robust across different estimation techniques and do not depend on the variable chosen to proxy exchange rate uncertainty. In conclusion, the results of the thesis suggest that whilst exchange rate flexibility has desirable properties as a 'shock absorber' to dampen the impact of real shocks, on average it still has an adverse effect on the exports of the emerging East Asian countries, and the impact is more severe on a financially less developed economy.
CALCIUM NUTRITURE OF NIGERIAN ELDERLY IN IBADAN SOUTH EAST LOCAL GOVERNMENT

Calcium is an important mineral in human health, adequate intake is associated with higher bone mineral density, reduced risks of osteoporosis, fractures and falls among the elderly. This study assessed the adequacy of calcium intake and relationship with incidences of bone aches and fractures. 150 elderly people from 100 households selected by cluster sampling technique in Ibadan South East Local Government constituted the study population. Dietary assessment was conducted using 24-hour dietary recall and analysed for calcium intake. Consumption pattern was assessed using food frequency questionnaire, blood pressure was taken using aneroid sphygmomanometer, lifestyles and sociodemographic characteristics were obtained using a semi-structured questionnaire. The mean calcium intake was 1569.8±1209.8mg disaggregated as 1782.4±1353.4mg in males and 1432.0±1092.6mg in females. 39.3% disaggregated as 44.1% in males and 36.3% in females, met the recommended intakes of 1500mg/day. Roots and tubers were the most consumed food, followed by vegetables and then cereals and grains. Milk and dairy as well as fish and meat products were the least consumed foods. 47.3% rarely consumed milk and dairy products and 42.7% rarely consumed fish and meat products throughout the week. 56.7% had normal diastolic blood pressure and 64.7% had normal systolic pressure. 65.3% reported having pains and bone aches, sites of pain were back (44.7%), knee and ankle (9.3%), hip joint (6.7%), and wrist (4.7%). There were no significant differences (p>0.05) in the calcium intake by age, systolic blood pressure and incidence of bone pains and aches. However, income and the diastolic blood pressure showed significant relationship (p>0.05) with calcium intake. The results show that many elderly Nigerians have inadequate calcium intake, however, calcium intake does not affect incidence of pains and aches. There is a need to promote increased consumption of calcium rich foods.
The cytoplasmically-inherited "sex-ratio" condition in natural and experimental populations of Drosophila bifasciata.

HE cytoplasmically-inherited “sex-ratio” condition (SR) has been analyzed by many workers. BUZZATI-TRAVERSO (1941) first reported “sex-ratio” females in Drosophila bilineata (=D. bijasciata) collected in natural populations in Italy. “Sex-ratio” females of the same species were found in Pavia, Italy (MAGNI 1953) and also in Asakawa, Japan (MORIWAKI and KITAGAWA 1954). Further examples of the “sex-ratio” condition have been reported in Drosophila prosaltans ( CAVALCANTI and FALCAO 1954), D. borealis (CARSON 1956), D. willistoni (MALOGOLOWKIN 1958), D. equinoxialis (MALOGOLOWKIN 1959a), D. nebulosa (POULSON and SAKAGUCHI 1960b) and D. robusta (POULSON 1966). The general features of the “sex-ratio” condition in the eight species mentioned above are as follows: (1) SR females produce offspring that consist almost entirely of daughters. (2) XY zygotes are killed in early developmental stages. (3) The SR condition is inherited only through the cytoplasm. However, there are some differences among the SR conditions originating in different species. The SR conditions in the species of the willistoni group are infective both interand intraspecifically through injection with ooplasm of SR eggs ( MALOGOLOWKIN and POULSON 195 7; MALOGOLOWKIN 1959a,b; MALOGOLOWKIN, CALVALHO and DA PAZ 1960). Also, the infectivity with hemolymph of SR females was demonstrated by SAKAGUCHI and POULSON (1960, 1963). POULSON and SAKAGUCHI (1960a, 1961) found that the infectious cytoplasmic agents responsible for the SR condition in these species are spirochaetes. On the other hand, the SR condition in D. bifasciata cannot be transferred intraspecifically by injection with abnormal ooplasm (MALOGOLOWKIN and CALVALHO 1961). The [SRI agents of D. bifasciata SR are transmittable only through injection of SR ovary homogenates, but the infectivity is very low compared with D. willistoni [SRI agents (LEVENTHAL 1968). LEVENTHAL (1968) concluded that the [SRI agents in D. bifasciata might be intracellular virus-like microorganisms. The evidence that the SR conditions are affected not only by cytoplasmic factors but by nuclear genes was demonstrated in D. prosaltam (CAVALCANTI, FALCAO and CASTRO 1958), in D. willistoni (SAKAGUCHI and POULSON 1960b; MALOGOLOWKIN 1958) and in D. paulistorum (MAMGOLOWKIN 1958). CAVALCANTI, FALCAO and CASTRO (1958) concluded that these genes would be comparable to the well-known k gene in Paramecium which acts to suppress the
Who Shall Leave? How CEO Preference and Power Affect Executive Turnover in Chinese Listed Companies

Manuscript Type: Empirical. Research Question/Issue: This study investigates the effect of CEO preference proxied by CEO‐executive demographic dissimilarity on non‐CEO executive turnover, and how such effect is moderated by CEO power‐related variables (the CEO's founder status and CEO ownership) and firm performance in a sample of Chinese listed companies. Research Findings/Results: The results show that when CEO‐executive demographic dissimilarity is inconsistent with social norms (e.g., the non‐CEO executive is older and has longer team tenure than the CEO), the non‐CEO executive is more likely to exit from the TMT. This association is strengthened by the CEO's founder status and low firm performance, whereas it is weakened by CEO ownership. Theoretical/Academic Implications: The theory of organizational politics proposes that competition among top managers plays an important role in the internal monitoring of firms. In contrast with most literature centering on the role of non‐CEO executives in CEO turnover and succession, this study focuses on what kind of non‐CEO executives CEOs are likely to dismiss and demonstrates how this process is influenced by CEO power and low firm performance. Practitioner/Policy Implications: Given a CEO's intention to dismiss a non‐CEO executive when CEO‐executive demographic dissimilarity is inconsistent with social norms, particularly when the CEO is powerful and firm performance is low, the board of directors should keep an eye on any conflict of interests or power struggle between the CEO and the non‐CEO executive. The CEO should also be prudent in making executive turnover decisions, because the implications of dismissing such a non‐CEO executive for reasons relating to firm performance are largely unknown.
Bid-Ask Spread, Futures Market Sentiment and Exchange Rate Returns

This paper analyzes spot foreign exchange bid-ask spread and the future market sentiment as two important variables to explain the exchange rate returns. We use two sentiment indices based on futures market return and volume. Time series and cross-sectional analyses of three different currency exchange rates; Australian Dollar, British Pound and Canadian Dollar – to US Dollar suggest that the spot market bid-ask spread is one important variable that positively affects the spot exchange rate returns. The return based sentiment index does not seem to be a significant factor, but the volume based sentiment index affects the spot exchange rate returns significantly. The negative sign of sentiment indices implies lower spot market return associated with higher investor interest in futures market, although higher trading in futures market contributes positively in the spot market.
Immigration and Chinese food preferences in the Greater Toronto Area

This paper presents important socio-economic characteristics of Chinese Canadians in the Greater Toronto Area (GTA) and the impact of these characteristics and acculturation on their expenditure on and consumption of ethnic vegetables. These consumers purchase ethnic vegetables based on attributes such as quality, traceable production, versatility and language. The factors that predict expenditure on ethnic vegetables among Chinese Canadians are as follows: the percentage spent on food out of total monthly income, years spent in Canada and acculturation. The estimated demand per month for Chinese ethnic vegetables in the GTA is $CAD21 million. Meeting this demand with ever more locally produced vegetables will reduce ‘food miles’, enhance niche market production and facilitate greater agricultural sustainability in Ontario.
Affirmative Action and Empowerment: Friends or Foes?

We consider effects of quota or "affirmative action" for women at work-places on the societal outcomes. A simple model of household decision making with production and endogenously determined female power is studied. We show that even under standard economic modeling specifications, as a result of affirmative action, it could turn out to be the case that female labor force participation and social welfare rise but at the cost of diminished female power and wider male-female wage-gap.
Assessment done write : using collaboration to reculture teacher learning

This study examined the impact that collaborative learning had on the assessment and evaluation of writing practices of a group of teachers as they engaged in a community of learners. The study explored the development of teacher knowledge and perceptions as well as the implementation of effective assessment strategies in writing for students in grades 4 to 8 that could be achieved through collaboration. Teachers' perceptions of the value of collaboration were also embedded within the study. Multiple methods of data collection were used to gather rich and descriptive data. Those methods included interviews, observation, and documentation of meetings and of participants' perceptions of their assessment and evaluation practices. Five preexisting themes describing desired outcomes of change were used to analyze the data. These themes included: knowledge, attitude, skill, aspiration, and behaviour. While it was difficult to identify definitively the degree oflearning achieved by the participants, conclusions can be drawn that the participants experienced learning and some change in the areas of knowledge and skill, attitude, aspiration, and behaviour. What was notable was the continued belief on the part of the participants of the value of collaboration as a means of learning.