Miracle-dz/UniFAR-FTUs huggingface dataset:
The Effect of News on Volatility: A Study of Ipos

We examine the relationship between firm news and volatility over time. Contrary to the negative relationship between idiosyncratic news and firm volatility predicted by current theories, we document a positive relationship between firm level news and firm level volatility. We confirm, as conjectured in prior literature, an increase in idiosyncratic IPO volatility over the period from 1973 through 2003. We find the increase in volatility is over twice as large for IPOs as for firms matched to the IPOs based on size and book to-market ratio. We also develop a comprehensive database consisting of 129,737 observations of news disclosures by recent IPO and matching firms, and we use the database to document the distribution of news day returns. Keeping the media sources of news constant, we find that the number of news citations per firm has risen sharply over the last three decades, and the stock price reaction to news has become significantly larger. Our final contribution presents evidence that the increased idiosyncratic volatility for both IPOs and matching firms is significantly related to an increase in news in recent decades. In fact, an increase of just one extra news day per month adds 0.6% to the monthly standard deviation for IPOs, or 2.1% per year.
Refined-Graph Regularization-Based Nonnegative Matrix Factorization

Nonnegative matrix factorization (NMF) is one of the most popular data representation methods in the field of computer vision and pattern recognition. High-dimension data are usually assumed to be sampled from the submanifold embedded in the original high-dimension space. To preserve the locality geometric structure of the data, k-nearest neighbor (k-NN) graph is often constructed to encode the near-neighbor layout structure. However, k-NN graph is based on Euclidean distance, which is sensitive to noise and outliers. In this article, we propose a refined-graph regularized nonnegative matrix factorization by employing a manifold regularized least-squares regression (MRLSR) method to compute the refined graph. In particular, each sample is represented by the whole dataset regularized with ℓ2-norm and Laplacian regularizer. Then a MRLSR graph is constructed based on the representative coefficients of each sample. Moreover, we present two optimization schemes to generate refined-graphs by employing a hard-thresholding technique. We further propose two refined-graph regularized nonnegative matrix factorization methods and use them to perform image clustering. Experimental results on several image datasets reveal that they outperform 11 representative methods.
Working memory function is linked to trauma exposure, independently of post-traumatic stress disorder symptoms

ABSTRACT Introduction: The purpose of the study was to examine how working memory (WM) may be related to exposure to potentially traumatic events and symptoms of post-traumatic stress disorder (PTSD). Method: In four studies, we measured WM function using adaptations of the running span and the reading span tasks. We compared the performance of women reporting experiences of sexual abuse to control participants (total n = 144 controls and 84 victims). We measured severity of the sexual abuse experiences as well as exposure to general life stress. Results: In all studies, trauma-exposed participants showed significantly lower WM function compared to control participants. In addition to traditional null hypothesis testing, we used a mini-meta analysis to estimate the combined estimated effect size of this difference, which was in the moderate range (d = 0.43 with 0.15–0.70 95% confidence interval). Regression equations showed that PTSD symptoms did not mediate the relationship between trauma exposure and WM function. Conclusions: Our results show that trauma exposure per se can be associated with important cognitive correlates even in individuals who do not develop psychopathological reactions.
Fringe modulation of Jagged1-induced Notch signaling requires the action of β4galactosyltransferase-1

Fringe modulates Notch signaling resulting in the establishment of compartmental boundaries in developing organisms. Fringe is a β3N-acetylglucosaminyltransferase (β3GlcNAcT) that transfers GlcNAc to O-fucose in epidermal growth factor-like repeats of Notch. Here we use five different Chinese hamster ovary cell glycosylation mutants to identify a key aspect of the mechanism of fringe action. Although the β3GlcNAcT activity of manic or lunatic fringe is shown to be necessary for inhibition of Jagged1-induced Notch signaling in a coculture assay, it is not sufficient. Fringe fails to inhibit Notch signaling if the disaccharide generated by fringe action, GlcNAcβ3Fuc, is not elongated. The trisaccharide, Galβ4GlcNAcβ3Fuc, is the minimal O-fucose glycan to support fringe modulation of Notch signaling. Of six β4galactosyltransferases (β4GalT) in Chinese hamster ovary cells, only β4GalT-1 is required to add Gal to GlcNAcβ3Fuc, identifying β4GalT-1 as a new modulator of Notch signaling.
PERSEPSI KUALITAS PENDIDIKAN, FASILITAS, DAN STAF PENGAJAR DI FAKULTAS EKONOMI, UNIVERSITAS KRISTEN PETRA, SURABAYA

This study evaluates the changes in perception related to education quality, facilities and teaching staff that occur between before a student enters the Economics Faculty at Petra Christian University and after they begin their studies. Results found using two sample t-tests show that all levels of students experienced a large decline in perception regarding the teaching staff, primarily due to the inability of the staff to teach according to the scheduled time, but also due to lecturers not valuing students or teaching in a way that was easy to receive instruction. Older students experienced positive changes in perceptions of facilities and no change in overall perception of the education quality, while younger students were dissatisfied with both educational quality as well as facilities. The results show the importance of prioritizing the human resources instead of the physical facilities. Abstract in Bahasa Indonesia : Penelitian ini menganalisa perubahan persepsi yang terjadi sebelum dan sesudah masuk kuliah terhadap kualitas pendidikan, fasilitas, dan staf pengajar di Fakultas Ekonomi, Universitas Kristen Petra. Hasil yang ditemukan dengan menggunakan analisa uji-t dua sample, menunjukkan bahwa semua angkatan mengalami penurunan besar dalam persepsi terhadap para staf pengajar, terutama karena ketidaktepatan waktu dalam mengajar, tetapi juga karena staf pengajar kurang menghargai mahasiswa dan juga tidak mengajar dengan cara yang mudah diterima. Mahasiswa dari angkatan lama mengalami perubahan persepsi yang positif terhadap fasilitas dan tidak mengalami perubahan dalam persepsinya terhadap kualitas pendidikan sedangkan mahasiswa dari angkatan baru mengalami penurunan persepsi terhadap kualitas pendidikan serta fasilitas. Seluruh hasil menunjukkan pentingnya mengutamakan sumber daya manusia dan bukan hanya fasilitas dan sarana fisik. Kata kunci: perubahan persepsi, kualitas pendidikan, fasilitas, staf pengajar.
Primal-Dual convex optimization in large deformation diffeomorphic registration with robust regularizers

Non-rigid image registration is a highly ill-posed problem. This means that a number of qualitatively different transformations can achieve the same image similarity after registration. This justifies the vast literature on image registration methods with differences on transformation characterization, regularizers, image similarity metrics, optimization methods, and additional constraints [3]. In the last decade, diffeomorphic registration has arisen as a powerful paradigm for non-rigid image registration, with application to Computational Anatomy. Large Deformation Diffeomorphic MetricMapping (LDDMM) [1] and Diffeomorphic Demons [4] are among the most widespread methods for diffeomorphic registration. In both methods, transformations are characterized to belong to an infinite dimensional Riemannian manifold of diffeomorphisms, parameterized by flows of smooth vector fields in the tangent space. The invertibility of the transformations is numerically guaranteed by the use of sufficiently smooth regularizers. Customarily, these methods regularize the problem with the L-norm of some physically meaningful differential expression of the vector fields, or with the Gaussian smoothing of the vector fields. Simultaneously to the development of the diffeomorphic registration paradigm, the computer vision community has shown a growing interest in robust regularizers based on the Total Variation (TV) norm. The popularity of these regularizers has increased thanks to the availability of optimization methods for solving this challenging problem. The ability of TV based regularizers to preserve discontinuities has led these methods to occupy top positions in optical flow benchmark studies and non-rigid image registration evaluations. The purpose of this article is to propose a method for primal-dual optimization of convexified LDDMM problems, formulated with robust regularizers and image similarity norms related to the TV norm. The method is based on Chambolle and Pock algorithm with diagonal preconditioning [2]. Let Di f f (Ω) be the manifold of diffeomorphisms. Let V be the corresponding tangent space at the identity. Let L= Id − γ∆ be the autoadjoint Laplacian operator associated to the scalar product in V , providing the Riemannian metric in Di f f (Ω). The LDDMM variational problem is given by the minimization of the energy functional
Constrained deterministic leader-follower mean field control

We consider a mean field game among a large population of noncooperative agents divided into two categories: leaders and followers. Each agent is subject to heterogeneous convex constraints and minimizes a quadratic cost function; the cost of each leader is affected by the leaders' aggregate strategy, while the cost of each follower is affected by both the leaders' and followers' aggregate strategy. We propose a decentralized scheme in which the agents update their strategies optimally with respect to a global incentive signal, possibly different for leaders and followers, broadcast by a central coordinator. We propose several incentive update rules that, under different conditions on the problem data, are guaranteed to steer the population to an ε-Nash equilibrium, with ε decreasing linearly to zero as the number of players increases. We illustrate our theoretical results on a demand-response program between electricity consumers and producers in the day-ahead market.
Second Cervical Root Neurofibroma and Ipsilateral Migraine Headache

This is a case history of a 38–year-old woman with a dumbbell-shaped C2 neurofibroma associated with right-sided classic migraine headaches (migraine with aura) and cervical trigeminal signs on the affected side. Surgical removal of the tumor was followed by resolution of the migraine headaches and persistence of the signs of cervicotrigeminal involvement.
Information-oriented patients and physician career satisfaction: is there a link?

Abstract Patients’ increasing use of alternative sources of information besides their physician and more active involvement in medical decision making may be changing relationships between physicians and their patients. We term patients who provide medical information to their physicians from sources other than their physician as information-oriented patients and investigate the relationship between having such patients and physician career satisfaction. We find that having more information-oriented patients is significantly associated with lower physician career satisfaction. Though healthcare information from alternative sources other than their physicians is thought to promote better-informed patient choices, the adverse relationship with physician career satisfaction found in this study may have important implications for patient access and quality of care.
Increased Plasma Soluble Thrombomodulin Levels in Cardioembolic Stroke

Soluble thrombomodulin (sTM) has been proposed as a potential marker of ischemic stroke. Results from previous studies remain controversial among different populations. We performed an analysis of plasma levels of sTM in Thai patients with acute ischemic stroke and determined whether sTM levels correlate with stroke subtypes, severity, and risk factors. Ninety-three patients and 76 controls were enrolled. Blood samples were obtained within 24 hours after stroke onset. Plasma sTM levels, measured using quantitative enzyme-linked immunosorbent assay, were significantly higher in patients than controls (P < .005), with the mean ±standard deviation (SD) levels of 3.08 ± 1.05 and 2.57 ± 1.15 ng/mL, respectively. Plasma levels of sTM in patients with cardioembolic subtype were significantly higher than in patients with other stroke subtypes, with the mean ± SD levels of 3.79 ± 1.26, 2.38 ± 0.68 (P < .009), and 2.38 ± 0.44 (P < .05) ng/mL for cardioembolism, large artery atherosclerosis, and small artery occlusion, respectively. Plasma sTM levels were not associated with stroke severity and risk factors of stroke; however, there was a slight relationship between high sTM levels and the presence of atrial fibrillation in the patient group. In conclusion, plasma sTM levels were increased in Thai patients with cardioembolic stroke and may be a potential marker during the acute phase.
Possibility of RFID in Conditions of Postal Operators

Radio frequency identification is becoming a modern trend in many sectors. It provides a contactless identification, tracking and tracing of goods, property and people in real time. Increase efficiency, performance and competitiveness. One area of application of RFID tech‐ nology is also postal processes. In this context there are several question of feasibility of the use of identification of letters. In addition to the costs associated with the introduction of technology is necessary to examine the feasibility of using RFID technology in the field of postal processes.
A Bayesian Mixed-Methods Analysis of Basic Psychological Needs Satisfaction through Outdoor Learning and Its Influence on Motivational Behavior in Science Class

Research has shown that outdoor educational interventions can lead to students' increased self-regulated motivational behavior. In this study, we searched into the satisfaction of basic psychological needs (BPN), i.e., autonomy support, the learners' experience of competence, and relatedness, both within the peer group and with their teachers, through outdoor learning. From 2014 to 2016, n = 281 students attended “research weeks” at a Student Science Lab in the Alpine National Park Berchtesgaden (Germany). The program is a curriculum-based one-week residential course, centered on a 2-day research expedition. Both before and after the course, students completed a composite questionnaire addressing BPN-satisfaction and overall motivational behavior in relation to the Self-Determination Index (SDI). At the latter time-point, students also reported on their experiences during the intervention. Questionnaire data was analyzed using a set of Bayesian General Linear Models with random effects. Those quantitative measures have been complemented by and contextualized with a set of qualitative survey methods. The results showed that the basic psychological needs influence the motivational behavior in both contexts equally, however on different scale levels. The basic needs satisfaction in the outdoor context is decisively higher than indoors. Moreover, the increment of competence-experience from the school context to the hands-on outdoor program appears to have the biggest impact to students' increased intrinsic motivation during the intervention. Increased autonomy support, student-teacher relations, and student-student relations have much less or no influence on the overall difference of motivational behavior. Gender does not influence the results. The contextualization partly supports those results and provide further explanation for the students' increased self-regulation in the outdoors. They add some explanatory thrust to the argument that outdoor teaching, be it during a residential week, or during occasional but regular sessions as integral part of the “normal” teaching, fosters intrinsic motivational behavior in science with lower secondary students.
The Modeling Methodology, Model Specifications and Development of Cast: Case/architecture Simulation Integration

This paper discusses the CASE/Architecture Simulation Integration (CASI, pronounced "CASEY"), methodology for integrating performance engineering architectural modeling information with CASE-based systems requirements analysis and design. The CASI approach is to embed data structures within a CASE tool so that the output of the CASE tool can serve as an input to an architectural modeling tool. Portions of a sample model, developed to show how the CASI data structures are embedded within the CASE based model, are presented. Also discussed are potential future directions where the CASI methodology may evolve.
Acute cardiovascular effects of insulin-like growth factor I in patients with chronic heart failure.

Insulin-like growth factor I (IGF-I) enhances myofibrillar development in cardiomyocytes of rats in culture and in vivo. In addition, IGF-I has vasodilatory effects and improves cardiac function in healthy volunteers. This study was conducted to evaluate the acute hemodynamic effects of IGF-I in patients with chronic heart failure Eight patients with chronic heart failure were randomized to receive recombinant human IGF-I (60 micrograms/kg) or placebo, i.v. , over 4 h in a cross-over, double blind study on 2 consecutive days. Electrocardiogram as well as systemic hemodynamics were continuously monitored over 7 h by flow-guided thermodilution and radial artery catheters. IGF-I was well tolerated by all patients, and no pathological changes on electrocardiogram were recorded. Compared with placebo, IGF-I increased the cardiac index by 27 +/- 3.7% (+/- SE; P < 0.0005) and the stroke volume index by 21 +/- 5.6% (P < 0.05), and decreased systemic vascular resistance by 28 +/- 4.4% (P < 0.0002), right atrial pressure by 33 +/- 9.0% (P < 0.003), and pulmonary artery wedge pressure by 25 +/- 6.1% (P < 0.03). Mean systemic and pulmonary artery pressure as well as heart rate and pulmonary vascular resistance were not significantly influenced by IGF-I treatment. Insulin and C peptide levels were decreased by IGF-I, whereas glucose and electrolyte levels remained unchanged. Urinary levels of norepinephrine decreased significantly (P < 0.05) during IGF-I infusion. Thus, acute administration of IGF-I in patients with chronic heart failure is safe and improves cardiac performance by afterload reduction and possibly by positive inotropic effects. Further investigations to establish whether the observed acute effects of IGF-I are maintained during chronic therapy appear to be warranted.
Callyptide A, a new cytotoxic peptide from the Red Sea marine sponge Callyspongia species

Abstract In the course of our continuing efforts to allocate bioactive secondary metabolites from Red Sea marine invertebrates, we have investigated the sponge Callyspongia species. The cytotoxic dichloromethane fraction of the methanolic extract of the sponge afforded a new cytotoxic peptide named callyptide A (1). Its structure was determined by extensive 1D and 2D NMR (COSY, HSQC and HMBC) studies and high-resolution mass spectral determination. The configuration of the amino acids was determined by Marfey’s analysis. Callyptide A was found to exhibit growth inhibitory activity when tested against different cancer cell lines.
Marketing Management: Analysis, Planning, Implementation and Control

I. UNDERSTANDING MARKETING MANAGEMENT. 1. Understanding the Critical Role of Marketing in Organizations and Society. 2. Building Customer Satisfaction Through Quality, Service, and Value. 3. Laying the Groundwork Through Market-Oriented Strategic Planning. 4. Managing the Marketing Process and Marketing Planning. II. ANALYZING MARKETING OPPORTUNITIES. 5. Marketing Information Systems and Marketing Research. 6. Analyzing the Marketing Environment. 7. Analyzing Consumer Markets and Buyer Behavior. 8. Analyzing Business Markets and Business Buying Behavior. 9. Analyzing Industries and Competitors. III. RESEARCHING AND SELECTING TARGET MARKETS. 10. Measuring and Forecasting Market Demand. 11. Identifying Market Segments and Selecting Target Markets. IV. DEVELOPING MARKETING STRATEGIES. 12. Differentiating and Positioning the Market Offer. 13. Developing, Testing, and Launching New Products and Services. 14. Managing Product Life Cycles and Strategies. 15. Designing Marketing Strategies for Market Leaders, Challengers, Followers, and Nichers. 16. Designing Strategies for the Global Marketplace. V. PLANNING MARKETING PROGRAMS. 17. Managing Products Lines, Brands, and Packaging. 18. Managing Service Businesses and Ancillary Services. 19. Designing Pricing Strategies and Programs. 20. Selecting and Managing Marketing Channels. 21. Managing Retailing, Wholesaling, and Physical-Distribution Systems. 22. Designing Communication and Promotion-Mix Strategies. 23. Designing Effective Advertising Programs. 24. Designing Direct-Marketing, Sales-Promotion, and Public- Relations Programs. 25. Managing the Salesforce. VI. ORGANIZING, IMPLEMENTING, AND CONTROLLING MARKETING EFFORT. 26. Organizing and Implementing Marketing Programs. 27. Evaluating and Controlling Marketing Performance. Author Index. Company/Brand Index. Subject Index.
Usage pattern mining for smartphone use personalization

Modern smartphones offer many features such as WiFi, GPS and Bluetooth. Users activate or deactivate these features in order to use wireless headphones, save battery or avoid being interrupted by email notifications. We present an approach to extract usage patterns relating smartphone features. The goal is to predict future device operation for a better use of the smartphones resources. We report a preliminary validation of the approach by using data gathered from users over a four month period.
The body in the analytic session: Focusing on the body–mind link

The author focuses on the importance of the body in the analysis of patients with a defect of thinking. In many cases this defect is not fully evident until concrete and bodily aspects begin to emerge in sessions. In the absence of awareness of the body, the patient’s personality is deprived of the main source of emotional stimulus, and mental growth is consequently paralysed. Hence the body is considered the starting point of mental processes and a progressive source of experience requiring the exercise of responsibility and thought. To indicate the theoretical background to this essentially clinical paper, some hypotheses about the body–mind link are very briefly considered. Specific emphasis is given to the development of Freud–Klein–Bionian theories about this subject and to some of Ferrari ’s recent proposals. The author discusses four clinical cases, emphasizing the encounter with the body in analysis and its integration in emotional and thinking processes. The analyst’s function in such cases is conceived mainly as that of midwife for a dialogue between the analysand ’s body and mind.