Miracle-dz/UniFAR-FTUs huggingface dataset:
A Parsimonious Multi-Asset Heston Model: Calibration and Derivative Pricing

We propose a parsimonious multi-asset Heston model and provide an easy-to-implement calibration algorithm. The model is customized to pricing multi-asset options in markets with liquidly traded single-asset options but no liquidly traded cross-asset options. In this situation, single-asset model parameters can be calibrated from option price data, however, cross-asset parameters cannot. We formulate a parsimonious model specification such that all single-asset models are Heston models, which are affine allowing for efficient calibration of the respective parameters. The single-asset models are correlated using cross-asset correlations only. Cross-asset correlations are observable, in contrast to correlations of latent variables such as volatilities, and serve as basis for calibration. A hybrid calibration approach for identifying the model parameters consistent with option price data and asset price data is outlined and illustrated by a case study. In banking practice the approach is referred to as correlation adjustment.
Cell Therapy in Burn Repair

* Corresponding Addresses: P.O. Box: 19395-4644, Stem Cells Department, Cell Sciences Research Center. Royan Institute, ACECR, Tehran, Iran Email: Nasser.Aghdami@royaninstitute.org Email: Baharvand@royaninstitute.org Abstract Received: 16/Mar/2008, Accepted: 3/May/2008 Skin replacement has been a challenging task in wound healing resulted from burn. The application of laboratory based tissue expansion techniques is a potential solution to the problem of surface area cover. Fortunately, considerable progress has been made in approaches to allograft and autograft skin transplantation in order to replace skin temporarily or permanently. Despite of this progress, development of new treatments for burn victims are still a problem in cultured skin grafts. Hair follicles, sweat glands and other features of normal skin are absent in cultured skin. Scientists believe that Stem cells with unique characteristics including self renewal and differentiation potential offer a possible way for reconstruction of some structures within the wound. So, enhanced understanding of stem cell potentials may help develop novel therapies to overcome the problems in wound healing.
EndoRCN : Recurrent Convolutional Networks for Recognition of Surgical Workflow in Cholecystectomy Procedure Video

Automated analysis of surgical workflow has been playing an increasingly important role in modern operating room, since the surgical workflow would directly affect the patient safety and the high-stress working conditions of clinicians [5]. Recognition of the surgical phase has been gradually becoming an essential basis for monitoring the surgery process, scheduling surgeons, predicting upcoming events, alerting and suggesting modifications, etc [4]. In addition, automatic segmentation of the surgical video can also help to facilitate the surgeon skill evaluation and improve the efficiency of documenting surgical reports. Previous studies have relied on signals of surgical tools to carry out the cholecystectomy procedure phase recognition in laparoscopic videos [1]. However, the information about tool usage relies heavily on manual annotation or additional built-in sensors [3]. Recognising surgical phase solely based on visual information is a promising direction, yet a quite challenging task. The main challenges lie in the high scene variability and blur within the surgery videos due to the blood occlusion and camera motion. Twinanda et al. [5] have utilized a convolutional neural network (CNN) consisting of 9 layers to learn features from visual information of the frames, and achieved state-of-the-art performance. In this work, we propose to exploit a very deep residual convolutional network (50 layers) to effectively extract highly discriminative features purely from visual information of the video. Furthermore, based on the visual representations from the convolutional network, we propose to encode the temporal information with a long-short term memory (LSTM) network, which is crucial for video analysis tasks. Overall, we name our proposed framework of recurrent convolutional networks for surgical flow recognition as EndoRCN.
A Mediation Model of Tourists' Repurchase Intentions for Packaged Tour Services

This study examines the mutual relationships among tourists' perceived service quality, value, satisfaction, and intentions to repurchase packaged tour services from travel agents. A mediation model where tourist satisfaction is hypothesized as a key mediator of the relationships between perceived service quality and repurchase intentions, and between perceived value and repurchase intentions, is developed and tested using a substantial data set with a time span of 9 consecutive years, available from a well-established regional consumer satisfaction survey. While previous literature has suggested that quality perceptions impose a direct effect on tourists' repurchase intentions, this study shows that such effect is fully mediated by tourists' satisfaction. The mediating role of satisfaction is further supported by examining the direct and indirect effects of perceived value on tourists' repurchase intentions.
Interplate seismicity at the CRISP drilling site: The 2002 Mw 6.4 Osa Earthquake at the southeastern end of the Middle America Trench

We investigate potential relations between variations in seafloor relief and age of the incoming plate and interplate seismicity. Westward from Osa Peninsula in Costa Rica, a major change in the character of the incoming Cocos Plate is displayed by abrupt lateral variations in seafloor depth and thermal structure. Here a Mw 6.4 thrust earthquake was followed by three aftershock clusters in June 2002. Initial relocations indicate that the main shock occurred fairly trenchward of most large earthquakes along the Middle America Trench off central Costa Rica. The earthquake sequence occurred while a temporary network of OBH and land stations ∼80 km to the northwest were deployed. By adding readings from permanent local stations, we obtain uncommon P wave coverage of a large subduction zone earthquake. We relocate this catalog using a nonlinear probabilistic approach within both, a 1‐D and a 3‐D P wave velocity models. The main shock occurred ∼25 km from the trench and probably along the plate interface at 5–10 km depth. We analyze teleseismic data to further constrain the rupture process of the main shock. The best depth estimates indicate that most of the seismic energy was radiated at shallow depth below the continental slope, supporting the nucleation of the Osa earthquake at ∼6 km depth. The location and depth coincide with the plate boundary imaged in prestack depth‐migrated reflection lines shot near the nucleation area. Aftershocks propagated downdip to the area of a 1999 Mw 6.9 sequence and partially overlapped it. The results indicate that underthrusting of the young and buoyant Cocos Ridge has created conditions for interplate seismogenesis shallower and closer to the trench axis than elsewhere along the central Costa Rica margin.
Kinetic proofreading of chromatin remodeling: from gene activation to gene repression and back

ATP-dependent chromatin remodeling is the active displacement of nucleosomes along or off DNA induced by chromatin remodeling complexes. This key process of gene regulation in eukaryote organisms has recently been argued to be controlled by a kinetic proofreading mechanism. In this paper we present a discussion of the current understanding of this process. We review the case of gene repression via heterochromatin formation by remodelers from the ISWI family and then discuss the activation of the IFN- β gene, where the displacement of the nucleosome is initiated by histone tail acetylations by the enzyme GCN5 which are required for the recruitment of SWI-SNF remodelers. We quantify the speci city of the acetylation step in the remodeling process by peptide docking simulations.
Toxicopathological studies of experimentally induced meloxicam toxicity in Wistar rats (Rattus norvegicus).

The present study was performed to determine the hemato-biochemical parameters and pathological alterations induced by meloxicam toxicity in Wistar rats. Thirty adult Wistar rats were divided uniformly into three equal groups viz. Group A, Group B and Group C. Group A rats received only 0.5% Sodium Carboxy Methyl Cellulose (CMC) and it served as vehicle control. Group B (Low dose) and Group C (High dose) rats were given meloxicam in 0.5% sodium CMC @ 4.2 mg/kg b.wt. (1/20 th of LD50), 8.4 mg/kg b.wt. (1/10 th of LD50) respectively orally by gavage for 28 days. The LD50 of meloxicam is 84 mg/kg b.wt. Meloxicam treated animals showed weakness, lethargy and distended abdomen. A dose dependent significant reduction in Hb, PCV, TEC, MCH, and MCHC were observed while value of TLC and neutrophils count were increased in all treatment groups. Biochemically dose dependent significant rise in alkaline phosphatase and decrease in total protein, albumin and globulin were observed. Histopathological sections of stomach, intestine, liver & kidney revealed varying degrees of haemorrhage, degeneration, necrosis and ulcer in rats of different treatment groups.Meloxicam is responsible to produce the serious gastrointestinal toxicity, such as inflammation, bleeding, ulceration can occur at any time, with or without warning symptoms.
Mutual perceptions of Chinese and German students at a German university: stereotypes, media influence, and evidence for a negative contact hypothesis

ABSTRACT In recent years, China and Germany have become invaluable partners in business, politics, and science. However, psychological research indicates that the countries’ large-scale affinity does not translate onto the individual level, with many Germans expressing more reservations towards China than vice versa. Previous content analyses have connected this effect to imbalances in media tonality, as German media mostly criticise Chinese politics, contrasting with idealised portrayals from the other direction. Acknowledging the particularly high number of Chinese exchange students in Germany, we investigate mutual stereotypes (both explicit and implicit) in the context of a German university, while also exploring students’ perceptions of media tonality. Despite observing mostly positive explicit stereotypes, we find that both groups strongly prefer their country of origin on an implicit level, matching their generally sparse contact in university life. Based on our results, we discuss implications for students, educators, and decision-makers in the media.
Human Identification using Major and Minor Finger Knuckle Pattern

: This paper investigates the possible use of minor finger knuckle patterns The minorand minor finger knuckle patterns can either be used as independent biometric patterns or employed to improve the performance from the major finger knuckle patterns. A completely automated approach for the minor finger knuckle identification is developed with key steps for region of interest segmentation, image normalization, enhancement, and robust matching to accommodate image variations. This paper also introduces a new or first publicly available database for minor (also major) finger knuckle images from 503 different subjects. By using major and minor fingur knuckle we can accurateliy find out human The efforts to develop an automated minor finger knuckle pattern matching scheme achieve promising results and illustrate its simultaneous use to significantly improve the performance over the conventional finger knuckle identification. Several open questions on the stability and uniqueness of finger knuckle patterns should be addressed before knuckle pattern/image evidence can be admissible as supportive evidence in a court of law. Therefore, this paper also presents a study on the stability of finger knuckle patterns from images acquired with an interval of 4–7 years. The experimental results and the images presented in this paper provide new insights on themajor and minor finger knuckle pattern and identify the need for further work to exploit finger knuckle patterns in forensics and biometrics applications.
CSI-Net: Unified Human Body Characterization and Action Recognition

Channel State Information (CSI) of WiFi signals becomes increasingly attractive in human sensing applications due to the pervasiveness of WiFi, robustness to illumination and view points, and little privacy concern comparing to cameras. In majority of existing works, CSI sequences are analyzed by traditional signal processing approaches. These approaches rely on strictly imposed assumption on propagation paths, reflection and attenuation of signal interacting with human bodies and indoor background. This makes existing approaches very difficult to model the delicate body characteristics and activities in the real applications. To address these issues, we build CSI-Net, a unified Deep Neural Network (DNN), that fully utilizes the strength of deep feature representation and the power of existing DNN architectures for CSI-based human sensing problems. Using CSI-Net, we jointly solved two body characterization problems: biometrics estimation (including body fat, muscle, water and bone rates) and human identification. We also demonstrated the application of CSI-Net on two distinctive action recognition tasks: the hand sign recognition (fine-scaled action of the hand) and falling detection (coarse-scaled motion of the body). Besides the technical contribution of CSI-Net, we present major discoveries and insights on how the multi-frequency CSI signals are encoded and processed in DNNs, which, to the best of our knowledge, is the first attempt that bridges the WiFi sensing and deep learning in human sensing problems.
The Acceptance of Technological Innovation by the Academics

The high demand of educational industry has some influences on the academics’ lifestyle, specifically the lecturers in which their previous lifestyle was conservative. Their conservative lifestyle was changed to modern lifestyle due to the high level of mobility. This study has two purposes. Firstly, it is conducted to discover whether compatibility, observability, relevance, personal demographic, personal experience, internal environment and external environment have any influences on the attitude of Telecommunication and Informatics Business Management Program Study (MBTI) Telkom University’s lecturers toward smartphone adoption. Secondly, this study is also conducted to discover whether the attitude influences behavior intention in smartphone adoption by the academics (MBTI Telkom University lecturers). In achieving the study’s objective, the Technology Acceptance Model (TAM) and Diffusion of Innovation (DOI) are applied. A survey by using questionnaire is carried out as the study’s approach. The result of the study provides empirical support to the idea that the characteristics of the innovation from Attitude, Observability, Compatibility, Personal demographics, and Personal experience influence the acceptance attitude toward the use of smartphone.
The IAG solar flux atlas: Accurate wavelengths and absolute convective blueshift in standard solar spectra

We present a new solar flux atlas with the aim to understand wavelength precision and accuracy in solar benchmark data. The atlas covers the wavelength range 405--2300 nm and was observed at the Institut f\"ur Astrophysik, G\"ottingen (IAG) with a Fourier Transform Spectrograph. In contrast to other FTS atlases, the entire visible wavelength range was observed simultaneously using only one spectrograph setting. We compare the wavelength solution of the new atlas to the Kitt Peak solar flux atlases and to the HARPS frequency-comb calibrated solar atlas. Comparison reveals systematics in the two Kitt Peak FTS atlases resulting from their wavelength scale construction, and shows consistency between the IAG and the HARPS atlas. We conclude that the IAG atlas is precise and accurate on the order of $\pm 10$ m s$^{-1}$ in the wavelength range 405--1065 nm while the Kitt Peak atlases show deviations as large as several ten to 100 m s$^{-1}$. We determine absolute convective blueshift across the spectrum from the IAG atlas and report slight differences relative to results from the Kitt Peak atlas that we attribute to the differences between wavelength scales. We conclude that benchmark solar data with accurate wavelength solution are crucial to better understand the effect of convection on stellar RV measurements, which is one of the main limitations of Doppler spectroscopy at m s$^{-1}$ precision.
Alveolar Ridge Preservation as a Way to Reduce the Need for Bone Augmentation: Implementation of a New, Non-invasive Method of Measuring Bone Preservation: Study Protocol of a Randomized Controlled Clinical Trial and Feasibility Testing Results

Introduction: The efficacy of alveolar ridge preservation (ARP) in preserving the bone after tooth extractions and before rehabilitation with an implant-supported restoration is examined. A new, non-invasive measurement method to determine the extent of bone preservation is presented. This measurement method is based on a 3D comparison of the condition immediately after extraction with the data of a cone-beam computed tomography (CBCT) eight weeks after extraction. Method: The study is a single-center, randomized, controlled parallel-group clinical investigation. 88 patients who required extraction of a maxillary tooth participated in the study. In 44 patients (intervention group), the socket is filled with a combination of a collagen plug and a collagen membrane introduced in the empty socket immediately after tooth removal (ARP). The 44 patients (control group) experience unassisted socket healing the hyporeflective space. Primary endpoints are (1) bone loss after tooth extraction; (2) the preservation of the alveolar ridge (soft tissue and bone); (3) the need for augmentation during the subsequent implant treatment; and (4) the question whether ARP is more costeffective than the therapy with unassisted socket healing. Patients will be followed for 5 years. Discussion: The extent of bone resorption after tooth extraction significantly influences the subsequent implant placement. Preserving the bone as well as possible is of great importance for the stability, prosthetically correct position and long-term functional success of the implantological treatment. A new, non-invasive method, without additional, study-related X-ray exposure, presented here for the first time, the change in volume of the bone bed can be analyzed. The preliminary results of this feasibility test report a median value of buccal and palatal bone loss of 6.2 mm (control)/4.4 mm (test) and 2.5 mm (control)/2.8 mm (test), respectively. These values are comparable to studies that also determined bone resorption by CBCT.
Strong ground motion simulation of the 1999 Chi‐Chi, Taiwan earthquake from a realistic three‐dimensional source and crustal structure

[1] We simulate the strong ground motion of 1999 Chi-Chi, Taiwan earthquake (Mw = 7.6) by considering a three-dimensional source rupture model in a full waveform three-dimensional wave propagation study. The strong ground motion records during the 1999 Chi-Chi earthquake show various characteristics at different sites in Taiwan. We adopt a three-dimensional source model derived from an inversion study with identical path effects as considered in this three-dimensional forward study. Comparisons between the simulation results and observed waveforms from dense island-wide strong motion stations demonstrate that the fault geometry, lateral velocity variation, and complex source rupture process greatly influence the distribution of strong ground shaking. The simulation has reproduced the heavy damage area that is mainly concentrated in the hanging wall, especially close to the surface break of the Chelungpu fault. The source directivity effect is also reproduced and shows serious shaking along the northward rupture direction. Low-velocity material in the shallow part of the Western Plain is found to generate significantly amplified ground motions. In the Central Range, the shaking is relatively weak owing to the energy radiation characteristics of a low-angle thrust of the Chelungpu faulting system. The wavefield is then amplified by a high-velocity gradient under the Coastal Range. Our simulation results in the frequency range of 0.01–0.5 Hz give good agreement with the extensive strong motion observations of the Chi-Chi earthquake. We find that adequate source representation, good three-dimensional crustal velocity structures, and careful numerical work are necessary to make the ground motion prediction feasible.
7 Performance Evaluation for Knowledge Transfer Organizations : Best European Practices and a Conceptual Framework

The importance of Knowledge Transfer Organizations (KTOs) for boosting innovative performance both at regional and firm level has been highlighted by literature and empirical research (Kodama, 2008; Laranja, 2009; Muller & Zenker, 2001; Muscio, 2010; Tether &Tajar, 2008). KTOs encompass a set of diversified institutions, both public and private in nature, such as science parks, incubators, business innovation centres (BICs), industrial liaison offices (European Commission, 2004; Reisman, 2005). Their mission is to be providers of knowledge intensive services to firms-receivers in the different phases of their innovation process (Howells, 2006) as well as to be part of a Knowledge Transfer (KT) infrastructure which promotes and facilitates networking activities between companies and public or private research institutions. Due to the increasing diffusion of KTOs operating in a regional innovation system and the variety of services provided, performance evaluation of these organizations is becoming paramount from different viewpoints. First, a measurement system by which different actors may gather performance information could help to overcome one of the main difficulties of creating a market for technological knowledge (Arora et al., 2001; Arora & Gambardella, 2010; Decter et al., 2007; Dosi et al., 2006; Lichtenthaler & Ernst, 2007), which is information asymmetry. Second, from the demand side, firms-receivers require a univocal method to compare and evaluate the offer of the different KTOs. Third, even KTOs need a performance measurement system on which they can rely to define their product/service portfolio and craft their competitive strategy at regional, national and international level. Finally, also local and regional institutions need to assess KTOs in order to define innovation policies and to allocate resources effectively. Despite the increasing need for measuring the effectiveness of KTOs, a still limited effort has been made by research to develop a performance measurement system based on a robust methodological framework. Approaches implemented by institutions and KTO associations like the IASP (International Association of Science Parks) or the European BIC Network, are based on multiple measures encompassing financial and economic metrics (for example the amount of investment made, the turnover generated, return on asset and return on equity), output indicators of the technology transfer process (for example the number of collaborative research agreements stipulated, the number of licenses executed or the number of spin-offs established) and input measures (such as physical space available, amount of