Miracle-dz/UniFAR-FTUs huggingface dataset:
Rac1 controls epithelial tube length through the apical secretion and polarity pathways

ABSTRACT The morphometric parameters of epithelial tubes are critical to the physiology and homeostasis of most organs. In addition, many human diseases are associated with tube-size defects. Here, we show that Rac1 limits epithelial tube elongation in the developing fly trachea by promoting Rab5-dependent endocytosis of the apical determinant Crumbs. Rac1 is also involved in a positive feedback loop with the septate junction protein Coracle. Thereby, Rac1 precludes paracellular diffusion and contributes to the septate junction-dependent secretion of the chitin-modifying enzymes Vermiform and Serpentine, which restrict epithelial tube length independently of Crumbs. Thus, Rac1 is a critical component of two important pathways controlling epithelial tube morphogenesis. Summary: Epithelial tube size regulation sustains organ physiology. Rac1 limits tube elongation in the fly trachea through restriction of apical membrane growth, and by supporting luminal secretion of chitin modifying enzymes.
The integration of traditional Greek dance in public schools 1

This paper researches the statutory educational regulations used as a foundation to introduce traditional Greek dance in the school curriculum and which transformed it into a taught subject with connections to the ideological-political and social conditions prevalent in Greece at the time. It particularly concerns the connection between the aims and content of this practical subject matter with the educational aspirations of cultivating a Greek national identity during the earliest introduction of dance in school activities (1914 (1899)–1929). The selection of folk dance as a representative component of Greek culture, the equation of particular dances with the substance of national identity (as ‘national dances’) and the political goal of creating a unified cultural identity through public education formed the basis on which traditional Greek dance was included in school activities at the beginning of the twentieth century.
Diversity-Multiplexing Tradeoff of Fading Interference Channels With Source Cooperation and Partial CSIT

In this paper, diversity-multiplexing tradeoff (DMT) of the delay-limited symmetric two-user single-antenna fading interference channel (IFC) with source cooperation is evaluated under both full-duplex and half-duplex cooperation constraints. The interference signal and the desired signal received by each destination node are assumed to be of comparable strength. Under each cooperation constraint, DMT upper and lower bounds are derived and shown to be tight, i.e., the lower bound meets the upper bound. A full characterization of the DMT of the channel is thus established. The upper bounds are evaluated using the capacity upper bounds and the lower bounds are obtained based on our proposed transmission schemes. The proposed transmission schemes only require partial channel state information at transmitter side (CSIT), making them suitable for practical applications. Specifically, for the transmission scheme designed under the full-duplex constraint, the partial CSIT is obtained by letting each destination represent the fading magnitude of each of its incoming links using 1 bit of information and feed back this information to the sources. In the half-duplex case, the proposed transmission scheme requires no more than 3 bits of feedback information to represent the fading magnitude of each link. Our DMT results show that source cooperation can notably improve the system diversity performance over the whole multiplexing gain region even under the half-duplex constraint.
An Intelligence Approach to Predict Fire Flame Length under Tunnel Ceiling

Various analytical models have developed to determine fire flame length under tunnel ceilings during fire emergency based on the regression and dimensional analysis. Artificial intelligence techniques are now being used as an alternate to statistical techniques. In this study, the artificial neural network (ANN) is applied to forecast fire flame length in tunnels. Moreover, particle swarm optimization algorithms were used for ANN training in order to overcome very slow convergence and easy entrapment in a local minimum of back propagation training algorithms. The model predicts flame length using Fire Heat Release Rate, Air velocity, Tunnel Width, Tunnel Height and Tunnel Cross Section. The predictive PSO-ANN model was implemented on the MATLAB and developed based on a database including 44 data sets from large scale fire test programs. The coefficient of determination (R2), the variance account for (VAF) and the root mean square error (RMSE) were calculated to check the prediction performance of the model. The R2, VAF and RMSE indices were obtained as95.884, 99.86% and 1.05. These indices revealed that the developed model is suitable for practical use in tunnels.
Survey of methicillin-resistant clinical strains of coagulase-negative staphylococci for mecA gene distribution

A total number of 125 methicillin-resistant (MIC, greater than or equal to 16) coagulase-negative Staphylococcus strains isolated in Japan were surveyed for the distribution of the mecA gene, the structural gene for penicillin-binding protein 2', which is the causative genetic element for the intrinsic resistance of methicillin-resistant Staphylococcus aureus. Screening with colony hybridization by using a cloned mecA gene probe revealed that 121 strains (96.8%) belonging to the nine coagulase-negative Staphylococcus species (S. epidermidis, S. haemolyticus, S. saprophyticus, S. sciuri, S. simulans, S. hominis, S. capitis, S. warneri, and S. caprae) carried mecA in their genome, indicating wide distribution of the gene among coagulase-negative Staphylococcus species. Most (93.4%) of the mecA-carrying strains were producers of penicillinase. Four strains, including two S. haemolyticus and two S. saprophyticus strains, did not carry mecA in spite of their resistance to methicillin. One of them was of low-level resistance (MIC, 16), but three of them had moderate- to high-level resistance to methicillin (MIC, 64). Analysis of gel electrophoretic banding patterns of penicillin-binding proteins of these strains showed absence of penicillin-binding protein 2' but some alterations in signal intensities of the other penicillin-binding proteins. The result indicated that about 3% of methicillin-resistant coagulase-negative staphylococci in these hospitals had a resistance mechanism different from that associated with the production of penicillin-binding protein 2', as has been reported in the case of a borderline methicillin-resistant strain of S. aureus.
Visual Communication in Large-Circulation U.S. Newspapers Before and After September 11, 2001

Through an examination of 590 front pages from 10 large-circulation U.S. newspapers during the 6 months before and after 9/11, this research found an increase in the size and use of photographs, and a decrease in text content and graphics. Further, this research found an increased reliance on visual techniques and principles of composition in the 1,693 photographs and 222 graphics examined. Thus, this preliminary study finds that newspaper coverage of the 9/11 terrorist attacks may have signaled a shift in the use and application of visual imagery within the daily large-circulation newspapers examined for this study.
Isolation of intracellular membranes by means of sodium carbonate treatment: application to endoplasmic reticulum

A rapid and simple method for the isolation of membranes from subcellular organelles is described. The procedure consists of diluting the organelles in ice-cold 100 mM Na2CO3 followed by centrifugation to pellet the membranes. Closed vesicles are converted to open membrane sheets, and content proteins and peripheral membrane proteins are released in soluble form. Here we document the method by applying it to various subfractions of a rat liver microsomal fraction, prepared by continuous density gradient centrifugation according to Beaufay et al. (1974, J. Cell Biol. 61:213-231). The results confirm and extend those of previous investigators on the distribution of enzymes and proteins among the membranes of the smooth and rough endoplasmic reticulum. In the accompanying paper (1982, J. Cell Biol. 93:103-110) the procedure is applied to peroxisomes and mitochondria.
The Makings of Personhood in a Shelter for People Considered Homeless and Mentally III

This paper is about the pragmatic makings of identity and personhood in a Boston shelter for people considered homeless and mentally ill. Drawing upon the philosophical writings of Amelie Rorty, it examines the ways in which the words and actions of shelter residents and staff effected certain discourses of selfhood and personhood. In the course of their everyday engagements with staff and others, residents took the form of or were quietly depicted as, variably constituted "characters," "individuals," "figures," "persons," or "selves. " Differentials of power were crucial to such dialogic constructions, for many of the residents' presentations of self developed in rhetorical, tactical response to the dominant imageries advanced by others.
The association between the mental health and behavioural problems of students and their reactions to cyber-victimization

Cyber-victimization is associated with mental health and behavioural problems and, consequently, young people need effective coping strategies. This study examined the relationship between the aggressive, assertive and passive actions of students after cyber-victimization and their mental health and behavioural problems. In total, 472 students reported being cyber-victimized (primary n = 101, secondary n = 371) and taking action. Student actions did not predict depressive or emotional symptoms. Students who responded aggressively used significantly fewer assertive strategies, had more conduct and hyperactivity problems, more overall difficulties, and fewer prosocial behaviours than students who responded assertively but not aggressively. Primary students reported more emotional symptoms and peer problems than secondary students. This study has important implications for the type (e.g., prosocial ICT skills, assertive skills training) and timing of the support provided to students who are cyber-victimized.
A New Model for Robot Audition using Independent Component Analysis and Time-Frequency Representation

We address the problem of robot audition and propose an approach to identify the speakers in this paper. The independent component analysis and time-frequency representation are introduced into the auditory research, and an auditory system is built on this basis. We employ the improved deconvolutive independent component analysis to separate the time delayed and convolved speech signals which are received by robots. The results of independent component analysis are inherently out-of-order, so robots cannot correlate the separated signals with sources. To solve this problem, we exploit the combination of optimized time-frequency representation and distance measures to reorder them, and accomplish the identification of speech signals. In identifying experiments, the best-obtained false acceptance rate is 0.15%, and the false rejection rate is 0.1%. The result reveals that we have implemented the auditory function of automaton with a good performance by the presented system.
Some determinants of salesforce effectiveness

Purpose – This paper aims to find out what characterises salespeople in the most effective salesforce in Spain.Design/methodology/approach – An empirical analysis has been done with 108 field sales managers from different sectors of activity to determine the conditions of the salesperson's control, professionalism and behaviour that affect his/her performance and the effectiveness of companies. A structural equations model or second generation multivariate model was used – PLS.Findings – The results show that more effective salesforces are controlled through behaviour control systems, salespersons in this team identify with the company's strategic objectives and an important part of their remuneration is based on a fixed salary.Research limitations/implications – First, the information has been gathered on a unique hierarchical level – team managers. Second, the company's activity sector and the type of salesperson can modify the results. Finally, the size of the sample has limited the potential applicati.
A Septin-Dependent Diffusion Barrier at Dendritic Spine Necks

Excitatory glutamatergic synapses at dendritic spines exchange and modulate their receptor content via lateral membrane diffusion. Several studies have shown that the thin spine neck impedes the access of membrane and solute molecules to the spine head. However, it is unclear whether the spine neck geometry alone restricts access to dendritic spines or if a physical barrier to the diffusion of molecules exists. Here, we investigated whether a complex of septin cytoskeletal GTPases localized at the base of the spine neck regulates diffusion across the spine neck. We found that, during development, a marker of the septin complex, Septin7 (Sept7), becomes localized to the spine neck where it forms a stable structure underneath the plasma membrane. We show that diffusion of receptors and bulk membrane, but not cytoplasmic proteins, is slower in spines bearing Sept7 at their neck. Finally, when Sept7 expression was suppressed by RNA interference, membrane molecules explored larger membrane areas. Our findings indicate that Sept7 regulates membrane protein access to spines.
When Left Is Right: Party Ideology and Policy in Post-Communist Europe

According to the classic partisan theory of spending, leftist parties are expected to increase government spending, and rightist parties are expected to decrease it. We argue that this relationship does not hold in post-Communist countries, where in the context of dual transition to democracy and to a market economy, leftist parties have had stronger incentives and better opportunities to enact tighter budgets, whereas rightist parties were compelled to spend more in order to alleviate economic hardships. We illustrate this theoretical argument with case studies from Hungary and Poland. We then test and find support for our theory by considering the influence of cabinet ideology on total, health, and education spending in thirteen post-Communist democracies from 1989 to 2004. We explore various alternative explanations and provide further narratives to support our causal argument.
Temporomandibular injuries and disorders in sport

Summary Orofacial injuries are common in sporting activities, depending on type of sport and many other factors. Temporomandibular injuries and disorders have been found in 2 – 6 % of all orofacial injuries cases, and they are the result of macrotraumas and microtraumas of the mandible, the temporomandibular joint and adjacent anatomic structures. The results of such traumas are of different symptomatology and can lead to a temporary or permanent cessation of sporting activity. Most injuries in sports, including orofacial and temporomandibular disorders, are predictable and therefore preventable. Measures for preventing orofacial injuries and temporomandibular disorders in sporting activities include various types of protection appliances: extraoral, interdental (intraoral) and combined mouth and teeth protectors. Interdental sports guards (mouthguards) can be stock or ready-made, mouth-formed or custom-made mouthguards. These mouthguards, mutually different in quality, play a very important role in prevention of orofacial and temporomandibular tissue injuries. Use of mouthguards significantly reduces the number of orofacial tissue injuries, and also reduces the severity of sustained injuries. Sports injuries, including those to orofacial and temporomandibular area, regardless of whether they are incurred in recreational or competitive sport, require multidisciplinary approach, both in diagnostics and treatment and in implementation of prevention measures. Sports physicians, coaches, sports officials, parents and athletes themselves, should also be permanently educated on the exceptional importance of prevention measures, thus making the role of dentist in sport unavoidable.
Design and Evaluation of Afterthought, A System that Automatically Creates Highlight Cinematics for 3D Games

Online multiplayer gaming has emerged as a popular form of entertainment. the course of a multiplayer game, playerinteractions may result in interesting emer- gent narratives that go unnoticed. Afterthought is a system that monitors player activity, recognizes instances of story elements in gameplay and renders cinematic highlights of the story-oriented game play, allowing players to view these emergent narratives after completing their gameplay session. This paper describes Afterthought’s implementation as well as an empirical human-subjects evaluation of the effectiveness of the cinematics that it creates.
3D reconstruction of microvasculature in MRI using magnetic microparticles

In MRI, magnetic microparticles induce a perturbation in the local magnetic field homogeneity in a much larger scale than their real size. While the ability to visualize microstructures using clinical imaging modalities remains to be improved, this concept initiates an approach for microvasculature visualization. An algorithm for 3D reconstruction of a microvascular network is presented. To evaluate the algorithm, magnetic microparticles were released in an unknown simulated microvascular network. The microparticles were scanned in different slices and at time intervals equal to the temporal resolution of the system. By recording the X, Y, and Z coordinates of the particles, points were generated to reconstruct their travel trajectory through the different bifurcations.
Sales Organization Recovery Management and Relationship Selling: A Conceptual Model and Empirical Test

This paper presents and tests a model of recovery management practices in business-to-business (B2B) sales organizations. The linkages between organic and mechanistic approaches are integrated to provide a more comprehensive conceptualization of sales organization recovery management relationships than currently exists in the literature. Responses from 177 B2B sales managers indicate that maintaining a positive service recovery culture, analyzing service failures, implementing recovery strategies, and monitoring, evaluating, and seeking feedback about recovery efforts are linked with important customer and financial outcomes. Results indicate the importance of proactive integration of service recovery concepts and behaviors into relationship selling efforts.
From local to national: Explaining the formation of the Australian Green Party

The rise of green parties in Australia follows a path that is well documented in the literature; the inability of other parties to accommodate environmental concerns, the increasing salience of green issues for governments and an electoral regime that permits party insurgency. This article examines how these factors have operated in Australia, and the extent to which a distinctive federal structure and federal electoral regulation of parties served to modify the emergence of a national green party.
The treatment effects of pensions on the labor supply of older workers∗

In the mid 1980’s, the labor force participation of older workers began to rise after many decades in decline. One explanation for this reversal is the shift in pensions from defined benefit plans (DB) to defined contribution plans (DC). This study estimates a causal model of the treatment effects of pension plans on the labor supply of older workers, using data from the Health and Retirement Study. Econometrically, we use a propensity score matching estimator to estimate the population average treatment effect, the population average treatment effect on the treated and the population average treated effect on the non treated; where treatment in our analysis refers to having a defined benefit plan and having a defined contribution plan. We find no difference between the labor market behavior of older workers with DC pensions and older workers with only social security. Because older workers with DC plans essentially follow the same retirement path as if they only had Social Security, we expect the increase in the retirement age of older workers to continue. Our approach avoids having to make strong assumptions about the functional form of the utility function, and makes the identifying variation from pension incentives clearer, while addressing endogeneity and self-selection in pensions and retirement.
Suppression of increase in electrostatic charging tendency of insulating oil by aging used for power transformer insulation

Additives to insulating oil and oil treatment by absorbents are investigated by thermal aging tests with the aim of suppressing flow electrification in power transformer insulation. 1, 2, 3-benzotriazol (BTA) is found to be effective for suppressing the increase of electrostatic charging tendency (ECT) in oils that contain either sulfide or sulfoxide compounds. Sulfide compounds are contained in new oil while sulfoxide compounds are generated by the oxidation of sulfide compounds. However, 2, 6-ditertiary-butyl paracresol (DBPC) is only effective for oils that contain sulfide compounds. The addition of sulfoxide compounds significantly increases the ECT of DBPC-added oil by the thermal aging tests. DBPC can suppress the conversion of sulfide to sulfoxide by blocking the generation of peroxide. However, DBPC has negligible effect on suppressing the increase in ECT by sulfonium ions, which are generated by the oxidation of sulfoxide. Negatively charged BTA ions, which are generated by the dissociation of hydrogen ions from BTA molecules, can mitigate the increase in ECT by sulfonium ions, which charge insulating oil positively. The effect of BTA is found to be lost when the concentration in oil decreases due to the adsorption on solid insulators. Oil treatment by absorbents such as clay, activated carbon and silica gel is found to remarkably decrease the ECT of deteriorated oil. However, additional thermal aging test increases the ECT to the same level as before the oil treatment. Although the additives and the oil treatment by absorbents are effective for suppressing and decreasing the ECT of insulating oils, their long-term effect is not assured. Thus periodical measurements of the ECT of insulating oils are crucial for the sake of preventive maintenance of aged transformers.
Edge admission control in MPLS network

Admission control and routing are two key mechanisms for advanced Quality of Service (QoS) and Traffic engineering (TE) support in the data networks. However, traditional QoS and TE solutions usually focus exclusively on routing to achieve network resource usage optimization, while often neglect to give adequate attention to admission control. To provide a more comprehensive solution, a novel approach for admission control in MPLS network was proposed in Ref. [2], which can be applied at network edges to provide the necessary QoS. However, the previously proposed admission control algorithm favors the QoS traffic without considering the influence on the huge amount of existing best-effort traffics. In this paper, we propose a new approach of computing admission thresholds, which takes into account both the best-effort traffic's performance and QoS traffic's constraints. Simulation results show that our new framework can provide additional performance protection for best effort traffic and improve throughput performance of the entire network.