Miracle-dz/UniFAR-FTUs huggingface dataset:
Generalized necessary and sufficient conditions for strictly positive real matrices

In this paper a review on the necessary and sufficient conditions for strict positive realness property of rational matrices is presented. Then a necessary condition that imposed by high frequencies is demonstrated for SPR matrices by using Laurent and Taylor series. Furthermore, a generalized version of necessary and sufficient conditions for SPR matrices including improper one is developed. Finally, the results are illustrated by several examples.
Preprint typeset using L A TEX style emulateapj Galaxy Clusters Associated with Short GRBs . I . The Fields of GRBs 050709 , 050724 , 050911 and 051221 a

We present a search for galaxy clusters in the fields of three bona-fide short GRBs (050709, 050724, and 051221a) and the putative short burst GRB 050911 using multi-slit optical spectroscopy. These observations are part of a long-term program to constrain the progenitor age distribution based on the fraction of short GRBs in galaxy clusters and early-type galaxies. We find no evidence for cluster associations at the redshifts of the first three bursts, but we confirm the presence of the cluster EDCC 493 within the error circle of GRB 050911 and determine its redshift, z = 0.1646, and velocity dispersion, σ ≈ 660 km s −1. In addition, our analysis of Swift/XRT observations of this burst reveals diffuse X-ray emission coincident with the optical cluster position, with a luminosity, L X ≈ 4.9 × 10 42 erg s −1 , and a temperature, kT ≈ 0.9 keV. The inferred mass of the cluster is 2.5 × 10 13 M ⊙ , and the probability of chance coincidence is about 0.1 − 1%, indicating an association with GRB 050911 at the 2.6-3. 2σ confidence level. A search for diffuse X-ray emission in coincidence with the fifteen other short GRBs observed with XRT and Chandra reveals that with the exception of the previously-noted cluster ZwCl 1234.0+02916 likely associated with GRB 050509b, no additional associations are evident to a typical limit of 3 × 10
A Study on the Relation among Attachment,Perfectionism and Mental Health of Adolescents

Objective:To explore the relation among attachment,perfectionism and mental health of adolescents.Methods:186 college students were assessed with Experiences in Close Relationships Inventory(Chinese Adaptation),College Student General Perfectionism Scale and Self-rated Health Measurement Scale.Results:"Minding mistakes" had significantly positive correlations with attachment anxiety(r=0.211,P0.01) and attachment avoiding(r=0.205,P0.01),and negative correlation with mental health(r=-0.485,P0.001). Mental health had significantly negative correlations with attachment anxiety(r=-0.225,P0.01)and attachment avoiding(r=-0.213,P0.01). Individuals with different attachment styles varied significantly in "minding mistakes"(F=4.521,P=0.004) and mental health(F=3.009,P=0.032). After con-trolling the variable of "minding mistakes",the direct effect from attachment anxiety and attachment avoiding to mental health was insignificant.Conclusion:"Minding mistakes" fully mediated the relationship between attachment anxiety,at-tachment avoiding and mental health.
Commentary: Beyond Morgan’s eight metaphors

This article focuses on the interplay between metaphor and metonymy in the construction of organization theory. It emphasizes the importance of understanding the relationship between the use of metaphor as a way of thinking and a way of being, and the specific metaphors that are produced through this process. It suggests that too much emphasis is often placed on metaphors as abstracted epistemological constructs rather than on understanding the more dynamic and changing role they play in the interactive modes of engagement through which people seek to grasp, concretize and act on their world. Developing the approach and ideas first presented in Images of Organization, this article suggests that a flexible use of metaphor can help us engage and understand the multidimensional and paradoxical nature of organizational life and help us to deal with the emerging issues shaping the contemporary socio-political–technological–organizational landscape. The article suggests that because most current approaches in social science are overly-focused on the study of abstracted metonymical constructs, they will have difficulty dealing with the multidimensional complexity we now face.
Visual inspection of hydroelectric dams using an autonomous underwater vehicle

This paper presents an automated solution to the visual inspection problem of hydroelectric dams. A small autonomous underwater vehicle, controllable in four degrees of freedom (surge, sway, heave, and yaw), is used for autonomously exploring the wall of a dam. The robot is easily programmed using a mission control language. Missions are executed by an intelligent control architecture that guides the robot to follow a predefined path surveying the wall. During the mission, the robot gathers onboard navigation data synchronized with optical imagery, sonar, and absolute navigation data, obtained from a moored buoy equipped with an ultra‐short baseline system. After the mission, the images of the wall are used to build a photomosaic of the inspected area. First, image features are matched over the image sequence. Then, navigation data and interimage correspondences are optimized together using bundle adjustment techniques. Thus, a georeferenced globally aligned set of images is obtained. Finally, a blending algorithm is used to obtain smooth seam transitions among the different images that constitute the mosaic, compensating for light artifacts and improving the visual perception of the scene. © 2010 Wiley Periodicals, Inc.
Scalpel: Scalable Preferential Link Tomography Based on Graph Trimming

Inferring per-link metrics through aggregated path measurements, known as network tomography, is an effective way to facilitate various network operations, such as network monitoring, load balancing, and fault diagnosis. We study the problem of identifying additive link metrics of a set of interesting links from end-to-end cycle-free path measurements among selected monitors, i.e., preferential link tomography. Since assigning a node as a monitor usually requires non-negligible operational cost, we focus on assigning the minimum number of monitors (i.e., optimal monitor assignment) to identify all interesting links. By modeling the network as a connected graph, we propose Scalpel, a scalable preferential link tomography approach. Scalpel trims the original graph by a two-stage graph trimming algorithm and reuses an existing method to assign monitors in the trimmed graph. We theoretically prove Scalpel has several key properties: 1) the graph trimming algorithm in Scalpel is minimal in the sense that further trimming the graph does not reduce the number of monitors; 2) the obtained assignment is able to identify all interesting links in the original graph; and 3) an optimal monitor assignment in the graph after trimming is also an optimal monitor assignment in the original graph. We implement Scalpel and evaluate it based on both synthetic topologies and real network topologies. Compared with state-of-the-art, Scalpel reduces the number of monitors by 39.0% to 98.6% when 50% to 1% of all links are interesting links.
A CMOS 15-bit 125-MS/s Time-Interleaved ADC With Digital Background Calibration

A 15-bit 125-MS/s two-channel time-interleaved pipelined ADC is fabricated in a 0.18 mum CMOS technology, and achieves 91.9 dB SFDR, 69.9 dB SNDR for a 9.99 MHz input. This ADC incorporates a single sample-and-hold amplifier which employs a precharged circuit configuration to mitigate performance requirements for its opamp. Digital background calibration is applied to maintain the conversion linearity of each A/D channel and also correct both gain and offset mismatches between the two channels. Excluding I/O buffers, the chip occupies an area of 4.3 times 4.3 mm2 and dissipates 909 mW from a 1.8 V supply.
The Relationships Among Insight, Social Support, and Depression in Psychosis

We assessed the role of satisfaction with social support as a mediating factor in the relationship between insight and depression in psychosis. Forty inpatients with schizophrenia-spectrum disorders self-completed measures of insight, social support, and depression. Results showed a curvilinear relationship between insight and satisfaction with support: those with high and low insight tended to have higher satisfaction with support than those with moderate insight. Satisfaction also had a negative relationship with depression. We found no direct relationship between insight and depression. This was consistent with satisfaction with social support mediating the relationship between global insight and depression.
The seats of reason? An imaging study of deductive and inductive reasoning

WE carried out a neuroimaging study to test the neuro-physiological predictions made by different cognitive models of reasoning. Ten normal volunteers performed deductive and inductive reasoning tasks while their regional cerebral blood flow pattern was recorded using [15O]H2O PET imaging. In the control condition subjects semantically comprehended sets of three sentences. In the deductive reasoning condition subjects determined whether the third sentence was entailed by the first two sentences. In the inductive reasoning condition subjects reported whether the third sentence was plausible given the first two sentences. The deduction condition resulted in activation of the left inferior frontal gyrus (Brodmann areas 45, 47). The induction condition resulted in activation of a large area comprised of the left medial frontal gyrus, the left cingulate gyrus, and the left superior frontal gyrus (Brodmann areas 8, 9, 24, 32). Induction was distinguished from deduction by the involvement of the medial aspect of the left superior frontal gyrus (Brodmann areas 8, 9). These results are consistent with cognitive models of reasoning that postulate different mechanisms for inductive and deductive reasoning and view deduction as a formal rule-based process.
On the Proportional Fairness Scheduling in Wireless OFDM Systems

The IEEE 802.16 standards are based on Orthogonal Frequency Division Multiplexing (OFDM) and multi-user OFDM (also known as OFDMA) for their desirable characteristics and potentials. Although well established, these standards only provide a framework of necessary mechanisms for deployable systems. Majority of the resource allocation issues are left unspecified. The conventional one-dimension scheduling cannot be readily applied in an 802.16 system. In this paper, a proportional fairness scheduling algorithm for 802.16 systems is proposed that utilizes the flexibility of frame division. Monte Carlo simulations are performed to evaluate these new methods in comparison to previously proposed techniques. The results indicate that the proposed methods lead to satisfactory performances, thanks to their improved two-dimensional feature.
Role of MIF/CD74 signaling pathway in the development of pleural mesothelioma

Macrophage migration inhibitory factor (MIF) is a pro-inflammatory cytokine implicated in acute and chronic inflammatory diseases. MIF is overexpressed in various tumors. It displays a number of functions that provide a direct link between the process of inflammation and tumor growth. Our group recently identified the MIF-receptor CD74 as an independent prognostic factor for overall survival in patients with malignant pleural mesothelioma. In the present study, we compared the levels of expression of MIF and CD74 in different human mesothelioma cell lines and investigated their physiopathological functions in vitro and in vivo. Human mesothelioma cells expressed more CD74 and secreted less MIF than non tumoral MeT5A cells, suggesting a higher sensitivity to MIF. In mesothelioma cells, high MIF levels were associated with a high multiplication rate of cells. In vitro, reduction of MIF or CD74 levels in both mesothelioma cell lines showed that the MIF/CD74 signaling pathway promoted tumor cell proliferation and protected MPM cells from apoptosis. Finally, mesothelioma cell lines expressing high CD74 levels had a low tumorigenic potential after xenogeneic implantation in athymic nude mice. All these data highlight the complexity of the MIF/CD74 signaling pathway in the development of mesothelioma.
Intersection of suicidality and substance abuse among young Asian-American women: implications for developing interventions in young adulthood.

PURPOSE The purpose of this paper is to provide a review of the current literature uncovering specific factors associated with self-harm and suicidality among young Asian American women, as well as to present the Fractured Identity Model as a framework for understanding these factors. This paper offers concrete suggestions for the development of culturally competent interventions to target suicidality, substance abuse, and mental illness among young Asian American women. DESIGN/METHODOLOGY/APPROACH Empirical studies and theory-based papers featured in peer-reviewed journals between 1990 and 2014 were identified through scholarly databases, such as PubMed, MEDLINE, PsycINFO, JSTOR, and Google Scholar. FINDINGS We identified several factors associated with suicidality among young Asian American women: (1) family dynamics, or having lived in a household where parents practice "disempowering parenting styles," (2) substance use/abuse, and (3) untreated mental illness(es), which are exacerbated by the stigma and shame attached to seeking out mental health services. The Fractured Identity Model by Hahm et al. (2014) is presented as a possible pathway from disempowering parenting to suicidal and self-harm behaviors among this population, with substance abuse playing a significant mediating role. Research limitations/implications - Our review focused on Asian American women, substance use among Asian Americans, and mental health among Asian Americans. Literature that focused on Asians living in Asia or elsewhere outside of the USA was excluded from this review; the review was limited to research conducted in the USA and written in the English language. PRACTICAL IMPLICATIONS The complex interplay among Asian American culture, family dynamics, gender roles/expectations, and mental health justifies the development of a suicide and substance abuse intervention that is tailored to the culture- and gender-specific needs of Asian Pacific Islander young women. It is imperative for professionals in the fields of public health, mental health, medicine, and substance abuse to proactively combat the "model minority" myth and to design and implement interventions targeting family dynamics, coping with immigration/acculturative stresses, mental illnesses, suicidal behaviors, and substance abuse among Asian-American populations across the developmental lifespan. ORIGINALITY/VALUE This paper provides specific suggestions for interventions to adequately respond to the mental health needs of young Asian-American women. These include addressing the cultural stigma and shame of seeking help, underlying family origin issues, and excessive alcohol and drug use as unsafe coping, as well as incorporating empowerment-based and mind-body components to foster an intervention targeting suicidality among Asian-American women in early adulthood.
Evaluation of energy storage system requirements for hybrid mining loader

Electrochemical energy storages, such as batteries and ultracapacitors, are typically used as energy and power sources in hybrid and electric vehicles because of their good technical characteristics. Selecting and sizing the correct storage technology can be complicated without detailed evaluation of the requirements. In this research, electrochemical energy storage system requirements for a hybrid underground mining loader were evaluated with the aid of simulation results. The objective of this research is to generate a set of key requirements for energy storage system in relation to the hybrid loader performance. These requirements take into account the power and energy capacity, costs, lifecycle and safety related requirements.
Quadruped posture control based on simple force distribution-a notion and a trial

Presents a standing posture controller for quadruped robots, i.e. control of the trunk's desired roll angle, pitch angle and height. The controller is based on a few simple ideas: (1) control the legs vertically using force control and horizontally using position control; (2) use simple rules to distribute leg forces; (3) the supporting surface should not have to be horizontal, planar or even static; (4) since the height is not easily defined for a legged robot, the average of the "leg heights" is used. This controller is successfully tested in both simulations and experiments. It is capable of adjusting to step changes in reference posture, as well as standing on a moving balance board. Finally, we suggest tests to benchmark posture controllers.
Thinkers' Personalities: On Individual Differences in the Processes of Sense Making

Psychologically speaking, humans share two defining attributes, one cognitive and the other social. The cognitive attribute refers to the sensemaking process in which people continually engage. The social element refers to the collective nature of sense making and its grounding in collective world views and shared realities. Jointly, the cognitive and the social elements define the field of study known as social cognition, which over the last century has made substantial contributions to understanding how people think, judge, and ultimately produce intelligible action (Fiske, 1992). Like the broader discipline of social psychology of which it is part, the social cognition domain has traditionally emphasized the situation and deemphasized personality and individual differences as the determinants of people’s sense-making activity. The large preponderance of social cognition studies have used experimental designs in which participants are randomly assigned to conditions and the relevant variable is manipulated in the laboratory. In this category fall the various priming studies, where the construct of interest is activated in the participants’ minds by the experimenter (for a review, see Förster & Liberman, 2007); the cognitive load studies (e.g., see Gilbert, 1989), in which a person’s cognitive capacity is situationally restricted; person perception or persuasion studies, where the information given to participants is manipulated in the experimental setting; or meta-cognitive research (for a review, see Petty, Brinol, Tormala, & Wegener, 2007), where people’s inferences about their cognitive states are systematically varied. Indeed, occasionally, social psychologists have implied that individual differences are of lesser theoretical importance than are situations, and have treated such differences as noise or “error variance” whose main function resides in serving as a statistical backdrop against which the ubiquitous “power of the situation” may be assessed. The situational emphasis in social psychology can be traced to Kurt Lewin’s (1939) ahistorical approach and his theorizing about the mental representation of one’s momentary “life space,” and the field of forces impinging on the individual’s psyche in specific circumstances. The juxtaposition of the person and the situation was echoed by developments in the field of personality, spearheaded by Walter Mischel’s (1968) skepticism about the cross-situational predictive ability of personality factors, leading him to conclude that “with the possible exception of intelligence, highly generalized behavioral consistencies have not been demonstrated, and the concept of personality traits as broad response predispositions is thus untenable” (p. 146). Decades later, Ross and Nisbett (1991) voiced a similar indictment of personality research, arguing that “a half-century of research has taught us that in most [. ] novel situations, one cannot predict with any accuracy how particular people will respond [. ] using information about an individual’s personal dispositions” (p. 2).
A primary care back pain screening tool: identifying patient subgroups for initial treatment.

OBJECTIVE To develop and validate a tool that screens for back pain prognostic indicators relevant to initial decision making in primary care. METHODS The setting was UK primary care adults with nonspecific back pain. Constructs that were independent prognostic indicators for persistence were identified from secondary analysis of 2 existing cohorts and published literature. Receiver operating characteristic curve analysis identified single screening questions for relevant constructs. Psychometric properties of the tool, including concurrent and discriminant validity, internal consistency, and repeatability, were assessed within a new development sample (n = 131) and tool score cutoffs were established to enable allocation to 3 subgroups (low, medium, and high risk). Predictive and external validity were evaluated within an independent external sample (n = 500). RESULTS The tool included 9 items: referred leg pain, comorbid pain, disability (2 items), bothersomeness, catastrophizing, fear, anxiety, and depression. The latter 5 items were identified as a psychosocial subscale. The tool demonstrated good reliability and validity and was acceptable to patients and clinicians. Patients scoring 0-3 were classified as low risk, and those scoring 4 or 5 on a psychosocial subscale were classified as high risk. The remainder were classified as medium risk. CONCLUSION We validated a brief screening tool, which is a promising instrument for identifying subgroups of patients to guide the provision of early secondary prevention in primary care. Further work will establish whether allocation to treatment subgroups using the tool, linked with targeting treatment appropriately, improves patient outcomes.
Correlations of Ezrin Expression with Pathological Characteristics and Prognosis of Osteosarcoma: A Meta-Analysis

We conducted a meta-analysis to comprehensively evaluate the correlations of ezrin expression with pathological characteristics and the prognosis of osteosarcoma. The MEDLINE (1966–2013), the Cochrane Library Database, EMBASE, CINAHL, Web of Science (1945–2013), and the Chinese Biomedical Database were searched without language restrictions. Meta-analyses conducted using STATA software were calculated. Ten studies met the inclusion criteria, including 459 patients with osteosarcoma. Meta-analysis results illustrated that ezrin expression may be closely associated with the recurrence of osteosarcoma or metastasis in osteosarcoma. Our findings also demonstrated that patients with grade III-IV osteosarcoma showed a higher frequency of ezrin expression than those with histological grade I-II osteosarcoma. Furthermore, we found that patients with positive expression of ezrin exhibited a shorter overall survival than those with negative ezrin expression. The results also indicated that positive ezrin expression was strongly correlated with poorer metastasis-free survival. Nevertheless, no significant relationships were observed between ezrin expression and clinical variables (age and gender). In the current meta-analysis, our results illustrated significant relationships of ezrin expression with pathological characteristics and prognosis of osteosarcoma. Thus, ezrin expression could be a promising marker in predicting the clinical outcome of patients with osteosarcoma.