nils-herrmann/clean_scirepeval huggingface dataset:
Seagrass on the edge Land use practices threaten coastal seagrass communities in Sabah, Malaysia
Year: 2008

Seagrass meadows are susceptible to coastal environmental impacts and serve as early indicators of system wide degradation. Two SeagrassNet monitoring sites were established in Sabah (Malaysia) in 2001 in the Tunku Abdul Rahman National Park: one a pristine, reference site and one anticipating impacts from nearby, ongoing waterfront development. At both sites, percent cover of all seagrass species declined significantly between 2003 and 2005. Water temperature, fine sediment and specific leaf biomass increased, while percent surface light intensity reaching the plants decreased. Evidence suggests that the temperature changes observed during the monitoring period were not sufficient to impact seagrasses; rather, the documented reduced subsurface light intensity caused the observed seagrass declines. Concomitantly, satellite imagery revealed a persistent sediment plume in these coastal waters associated with deforestation. SeagrassNet monitoring quickly documented seagrass losses and identified the causal environmental factor, providing timely information for management consideration.
Meso parametric value function approximation for dynamic customer acceptances in delivery routing
Venue: Eur. J. Oper. Res.
Year: 2020

The rise of mobile communication, ample computing power, and Amazon's training of customers has led to last mile delivery challenges and created struggles for companies seeking to budget their limited delivery resources efficiently to generate enough revenue. In this paper, we examine the capacitated customer acceptance problem with stochastic requests (CAPSR) a problem in which a company seeks to maximize expected revenue by accepting or rejecting requests. Each accepted request generates revenue and must be routed, consuming driver time and vehicle capacity. To solve the problem, we introduce a novel method of value function approximation (VFA) Conventionally, VFAs are either parametric (P VFAs) or non parametric (N VFAs) Both VFAs have advantages and shortcomings and their performances rely significantly on the structure of the underlying problem. To combine the advantages and to alleviate the shortcomings of P VFA and N VFA used individually, we present a novel method, meso parametric value function approximation (M VFA) The results of computational experiments show that the M VFA outperforms benchmarks for the CAPSR and show M VFA offers the advantages of the individual VFAs while alleviating their shortcomings. Most importantly, we demonstrate that simultaneous approximations lead to better outcomes than either N and P VFA individually or some ex post combination.
Le traitement chirurgical de l'hyperparathyroidie secondaire a l'insuffisance renale chronique
Year: 2018

L'hyperparathyroidie secondaire est une complication frequente de l'insuffisance renale chronique au stade d'epuration extra renale. Malgre les progres recents et continus de la prise en charge medicale de cette complication, la parathyroidectomie intervient encore dans les formes severes et resistantes au traitement medical. Le but de ce travail est de preciser les indications du traitement chirurgical et d'apprecier l'evolution a court et a long terme. Patients et methodes Il s'agit d'une etude retrospective portant sur 18 patients hemodialyses chroniques, parathyroidectomises sur une periode de 10 ans soit du mois de janvier 2007 au mois de janvier 2017. Resultats L'age moyen des patients au moment de l'intervention etait de 41,3 ans (17 et 78 ans) Il s'agissait de 7 hommes et 11 femmes. La duree moyenne en hemodialyse au moment de la parathyroidectomie etait de 55,2 mois (1 et 144 mois) Dans notre population, la nephropathie initiale etait glomerulaire chronique dans 6 cas, tubulo interstitielle chronique dans 4 cas, une polykystose renale dans 3 cas, vasculaire dans 2 cas, un syndrome d'Alport dans 1 cas. Elle etait indeterminee dans 2 cas. La parathyroidectomie etait indiquee devant une hyperparathyroidie secondaire resistante au traitement medical chez 12 patients (66 et devant une hyperparathyroidie tertiaire chez 6 patients (34 En preoperatoire, les patients avaient un taux de PTH moyen a 1951 pg/mL, une calcemie moyenne a 1,98 mmol/L et une phosphoremie moyenne a 1,72 mmol/L. Le geste chirurgical programme etait une parathyroidectomie subtotale des 7/8 chez 17 patients. Une parathyroidectomie totale etait realisee chez une seule patiente. L'evolution postoperatoire immediate etait marquee par la survenue d'une hypocalcemie severe inferieure a 1,82 mmol/L chez 7 personnes (38 Au terme d'un suivi moyen de 4,7 ans, nos patients avaient un taux de PTH moyen a 144 pg/mL, une calcemie moyenne a 1,92 mmol/L et une phosphoremie moyenne a 1,55 mmol/L.  La parathyroidectomie est un moyen therapeutique efficace qui permet de freiner l'hypersecretion de la parathormone chez l'hemodialyse chronique. Cependant, ses indications doivent etre bien codifiees devant ses complications postoperatoires non negligeables.
Geraniol produces antidepressant like effects in a chronic unpredictable mild stress mice model
Venue: Physiology Behavior
Year: 2015

Geraniol (GE) which has neuroprotection and anti inflammation activities, is mostly abundant in the essential oils of rose, ginger, lemon, orange, lavender etc. However, its antidepressant like effect has not been reported before. The present study was designed to investigate whether GE confers an antidepressant effect in mice exposed to a chronic unpredictable mild stress (CUMS) model of depression and to explore its possible mechanisms. The results showed that GE treatments for 3 weeks significantly alleviated the depression related behaviors of CUMS exposed mice, as indicated by restored decreased sucrose preference and shortened immobile time in both the forced swimming tests (FST) and tail suspension tests (TST) And these ameliorative effects of GE treatment were involved with regulating CUMS induced pro inflammatory cytokine interleukin 1 beta (IL 1b) related neuro inflammation. We further found that GE treatment reversed CUMS induced IL 1b elevation, possibly by inhibiting nuclear factor kappa B (NF kB) pathway activation and regulating nucleotide binding and oligomerization domain like receptor family pyrin domain containing 3 (NLRP3) inflammasome expression. Taken together, our findings suggested that GE exerted a potential antidepressant like effect in CUMS mice model of depression, which may provide an insight into the potential of GE in therapeutic implications for depression.
Deep view synthesis from sparse photometric images
Venue: ACM Trans. Graph.
Year: 2019

The goal of light transport acquisition is to take images from a sparse set of lighting and viewing directions, and combine them to enable arbitrary relighting with changing view. While relighting from sparse images has received significant attention, there has been relatively less progress on view synthesis from a sparse set of "photometric" images images captured under controlled conditions, lit by a single directional source; we use a spherical gantry to position the camera on a sphere surrounding the object. In this paper, we synthesize novel viewpoints across a wide range of viewing directions (covering a 60deg cone) from a sparse set of just six viewing directions. While our approach relates to previous view synthesis and image based rendering techniques, those methods are usually restricted to much smaller baselines, and are captured under environment illumination. At our baselines, input images have few correspondences and large occlusions; however we benefit from structured photometric images. Our method is based on a deep convolutional network trained to directly synthesize new views from the six input views. This network combines 3D convolutions on a plane sweep volume with a novel per view per depth plane attention map prediction network to effectively aggregate multi view appearance. We train our network with a large scale synthetic dataset of 1000 scenes with complex geometry and material properties. In practice, it is able to synthesize novel viewpoints for captured real data and reproduces complex appearance effects like occlusions, view dependent specularities and hard shadows. Moreover, the method can also be combined with previous relighting techniques to enable changing both lighting and view, and applied to computer vision problems like multiview stereo from sparse image sets.
ML fusion based multi model human detection and tracking for robust human robot interfaces
Venue: 2009 Workshop on Applications of Computer Vision (WACV)
Year: 2009

A novel stereo vision system for real time human detection and tracking on a mobile service robot is presented in this paper. The system integrates the individually enhanced stereo based human detection, HOG based human detection, color based tracking, and motion estimation for the robust detection and tracking of humans with large appearance and scale variations in real world environments. A new framework of maximum likelihood based multi model fusion is proposed to fuse these four human detection and tracking models according to the detection track associations in 3D space, which is robust to the possible missed detections, false detections, and duplicated responses from the individual models. Multi person tracking is implemented in a sequential near to far way, which well alleviates the difficulties caused by human over human occlusions. Extensive experimental results demonstrate the robustness of the proposed system under real world scenarios with large variations in lighting conditions, cluttered backgrounds, human clothes and postures, and complex occlusion situations. Significant improvements in human detection and tracking have been achieved. The system has been deployed on six robot butlers to serve drinks, and showed encouraging performance in open ceremony events.
DNA metabarcoding reveals changes in the contents of carnivorous plants along an elevation gradient
Venue: Molecular ecology
Year: 2019

Resource variation along abiotic gradients influences subsequent trophic interactions and these effects can be transmitted through entire food webs. Interactions along abiotic gradients can provide clues as to how organisms will face changing environmental conditions, such as future range shifts. However, it is challenging to find replicated systems to study these effects. Phytotelmata, such as those found in carnivorous plants, are isolated aquatic communities and thus form a good model for the study of replicated food webs. Due to the degraded nature of the prey, molecular techniques provide a useful tool to study these communities. We studied the pitcher plant Sarracenia purpurea L. in allochthonous populations along an elevational gradient in the Alps and Jura. We predicted that invertebrate richness in the contents of the pitcher plants would decrease with increasing elevation, reflecting harsher environmental conditions. Using metabarcoding of the COI gene, we sequenced the invertebrate contents of these pitcher plants. We assigned Molecular Operational Taxonomic Units at ordinal level as well as recovering species level data. We found small but significant changes in community composition with elevation. These recovered sequences could belong to invertebrate prey, rotifer inquilines, pollinators and other animals possibly living inside the pitchers. However, we found no directional trend or site based differences in MOTU richness with elevational gradient. Use of molecular techniques for dietary or contents analysis is a powerful way to examine numerous degraded samples, although factors such as DNA persistence and the relationship with species presence still have to be completely determined.
An adaptive medium access control scheme for mobile ad hoc networks under self similar traffic
Venue: The Journal of Supercomputing
Year: 2009

An important function of wireless networks is to support mobile computing. Mobile Ad hoc NETworks (MANETs) consist of a collection of mobile stations communicating with each other without the use of any pre existent infrastructure. The self organization characteristic of MANETs makes them suitable for many real world applications where network topology changes frequently. As a result, the development of efficient MAC (Medium Access Control) protocols in MANETs is extremely challenging. Self similar traffic with scale invariant burstiness can generate bursty network loads and thus seriously degrade the system performance. This paper presents an adaptive MAC scheme which dynamically adjusts the increasing function and resetting mechanism of contention window based on the status of network loads. The performance of this scheme is investigated in comparison with the legacy DCF (Distributed Coordination Function) under self similar traffic and different mobility models. The performance results reveal that the proposed scheme is able to achieve the higher throughput and energy efficiency as well as lower end to end delay and packet drop probability than the legacy DCF.
THE USE OF COOPERATIVE LEARNING STAD TO IMPROVE SPEAKING SKILLS OF ACCOUNTING PROGRAM STUDENTS GRADE XI IN SMK N 1 DEPOK IN THE ACADEMIC YEAR OF 2013/2014
Year: 2016

This action research study aimed to improve the speaking skills of grade XI Accounting Program students in SMK N 1 Depok, in the academic year of 2013/2014 through the use of cooperative learning STAD. This collaborative action research study involved 32 students of class XI AK 1, the English teacher, and the collaborator from the English Education department, Yogyakarta State University. This study was conducted in SMK N 1 Depok in three cycles and each cycle was held for two meetings for regular lessons and a meeting for a quiz in each cycle. The research procedure consisted of reconnaissance, planning, action and observation, and reflection. The data obtained during the research consisted of qualitative data and quantitative data. The qualitative data were obtained from observations and interviews while the quantitative data were gained from tests. The qualitative data were analyzed by condensing data, displaying data, and drawing conclussion. The mean scores of the tests were gained as the result of the quantitative data analysis. The validity of the research data was democratic, outcome, process, catalytic, and dialogic validity. The results of the study showed that the use of cooperative learning STAD improved the students' speaking skills. The students showed improvement in some aspects such as pronunciation, vocabulary mastery and confidence. The components of STAD contributed to promote students' participation in the classroom, and in small groups.
Capabilities of ARCore and ARKit Platforms for AR/VR Applications
Venue: DepCoS RELCOMEX
Year: 2019

In this paper ARCore and ARkit capabilities were scrutinized and compared. Authors established comparison criteria for both platforms, developed test applications and ran comparison tests. Obtained results can be a help in choosing the right framework to speed up prototyping and development of modern AR/VR applications. This work consists of a comprehensive comparison of these new frameworks in the following respects: general performance (CPU/memory use) mapping of planes on various surface types, influence of light and movement on mapping quality etc.
Feasibility of tunnel boring through weakness zones in deep Norwegian subsea tunnels
Year: 2017

Norwegian subsea tunnels have all been excavated with the drill and blast method. The prevailing rock mass quality is generally favorable for tunneling, but the encounter of weak and/or water bearing zones is normal, and sometimes leads to extreme challenges. Future Norwegian subsea tunnels might benefit from the use of tunnel boring machines (TBMs) but the less flexible nature of a TBM will require more effort with regards to investigations and evaluations in the pre construction phase. This paper summarizes some of the extreme challenges encountered in Norwegian subsea road tunnels, and reviews experience from international TBM projects considered relevant for Norwegian tunnels. The focus is on geological hazards, their implications, and mitigation measures. The aim is to assess the feasibility of tunnel boring through subsea weakness zones. Due to uncertainties and limitations with pre construction investigations/interpretations for subsea tunnels, there will always be a remaining risk of encountering difficult ground. It is shown that it can be hard to predict adverse rock mass behavior ahead of the face during tunneling. Based on recent state of the art large diameter >12 m) TBM technology, it is concluded that closed mode excavation may be considered feasible for water pressures up to ca. 100 m. Pressurized TBMs can reduce risk and may enable excavation through unfavorable rock mass conditions, but this will require continuous installation of a gasketed segmental concrete lining (undrained solution) which can mean a conservative lining design for the rest of the tunnel. Adverse rock mass behavior and/or sudden large water inflow at high pressure can be challenging to handle with open face TBMs. Based on the above large diameter tunnel boring is considered to involve a high risk for water pressures above ca. 100 m, and is therefore not recommended. The use of a pilot tunnel to investigate and treat the ground ahead of the main tunnel(s) can be a way to reduce risk. In order to reduce contractual risk, the inclusion of a drill and blast section to be used in the case of extreme challenges, can be wise. The potential for squeezing should be evaluated for weakness zones of substantial width, and 3D numerical analysis are encouraged for zones where squeezing challenges are expected.
L' enfant gardien du secret vivre et grandir avec le sida et ses traitements a Bobo Dioulasso (Burkina Faso)
Year: 2012

Cette these offre une analyse socio anthropologique de l'experience du sida vecue par les enfants au Burkina Faso, dans le contexte historique de l'acces national aux traitements antiretroviraux, au milieu des annees 2000. Elle s'inscrit a la croisee de l'anthropologie politique de la sante et de l'anthropologie de l'enfance, considerant les enfants en tant qu'acteurs sociaux dont il s'agit de prendre en compte le point de vue. Fondee sur une enquete ethnographique de vingt mois conduite a Bobo Dioulasso aupres de trente sept enfants, de leurs parents et de soignants, elle apporte une contribution originale a l'epistemologique et a la methodologique de l'enquete ethnographique avec les enfants. L'analyse socio anthropologique de l'experience de la maladie et des traitements se structure autour de trois thematiques principales. La premiere aborde la facon dont les enfants ont ete pris en compte dans les politiques internationales de lutte contre le sida. Retracant le processus socio historique par lequel la categorie des " orphelins et enfants vulnerables " a emerge et s'est institutionnalisee a partir de la fin des annees 1990, l'analyse decrit le " traitement politique a la marge " dont les enfants ont fait l'objet dans les reponses apportees a l'epidemie. La deuxieme thematique traite de l'annonce de la maladie aux enfants, dans un contexte institutionnel de " double standard " ou l'information ne fait pas l'objet de procedures standardisees. A partir d'une ethnographie des dits et non dits de la maladie aux enfants, l'analyse eclaire la violence des conditions dans lesquelles ces derniers decouvrent leur maladie ou sont amenes a la suspecter. Appartenant a une " generation sida " pour laquelle la maladie est signifiante d'un point de vue biologique, social et moral, les enfants gardent le secret afin de ne pas etre stigmatises. Par ailleurs, alors que les adultes sont reticents a informer les enfants pensant qu'ils vont devoiler leur statut ou celui de leurs parents les enfants se revelent etre les gardiens scrupuleux du secret. Enfin, la troisieme thematique traite du vecu de la maladie par les enfants qui est faconnee par l'incertitude associee a la mort, a l'observance des traitements ainsi qu'au secret qui entoure la maladie. En filigrane de l'experience de la maladie vecue par les enfants, se dessine le role proactif que jouent ceux ci dans le " travail " quotidien qu'implique la gestion de la maladie et de ses traitements. Ils participent au rappel des heures de prise, prennent leurs medicaments de facon autonome, mais surtout contribuent a taire et a cacher la maladie. Ainsi, alors que le secret peine a etre percu comme une realite enfantine, les enfants se revelent etre les gardiens du secret de leur maladie et de celle de leurs parents.
Ambipolar Graphene Quantum Dot Phototransistors with CMOS Compatibility
Year: 2018

The hybridization of 2D materials and colloidal quantum dots (CQDs) has been demonstrated to be an ideal platform for infrared photodetectors due to the high mobility of 2D materials and the excellent light harvesting capability of CQDs. However, the realization of ambipolar, broadband, and room temperature graphene quantum dot phototransistors with complementary metal oxide semiconductor (CMOS) compatibility remains challenging. Here N, S codecorated graphene is deposited with PbS CQDs to fabricate a hybrid phototransistor on a silicon dioxide/silicon gate. The resulting device demonstrates a gate tuneable ambipolar feature with a low gate bias of less than 3.3 V at room temperature in ambient. Broadband spectra from visible to near infrared and to short wave infrared (SWIR) light can be detected with gain value of up to 10(5) and a fast response of 3 ms. Upon illumination by SWIR light at 1550 nm, the phototransistor exhibits an ultrahigh responsivity that is on the order of 10(4) AW( 1) and a specific detectivity that is on the order of 10(12) Jones with a low driving voltage of 1 V. This decorated hybrid architecture illustrates the potential of graphene and CQDs to be integrated with silicon integrated circuits and opens a new path toward ambipolar photodetector fabrication.
Rational Design of Nanoparticles to Overcome Poor Tumor Penetration and Hypoxia induced Chemotherapy Resistance: Combination of Optimizing Size and Self inducing High Level of Reactive Oxygen Species.
Venue: ACS applied materials interfaces
Year: 2019

One tough question induced by the hypoxia in cancer tissue is resistance to the anticancer drugs basing on reactive oxygen species (ROS) mechanism. Furthermore, the hypoxic regions locate in the center of tumor where tumor cells are easy to residual and survival due to the poor drug delivery efficiency even with nanocarriers. In this paper, these problems were well addressed through the rational combination of the enhanced penetration, self inducing high level of intracellular ROS and synchronously pH sensitive drug release, realized by a simple structural and accessible copolymer, poly(poly(ethylene glycol) methyl ether methacrylate co (2 methylpropenoic acid glycerol cinnamaldehyde) (PgEMC) For one thing, PgEMC could self assemble into stable nanoparticles with PEG shell and optimizing diameters of 60 nm to simultaneously facilitate long blood circulation and deep tumor penetration. Second, cinnamylaldehyde moieties could detach from PgEMC NPs in intracellular acidic environment and trigger high level of ROS to allay the doxorubicin (DOX) resistance induced by hypoxia in solid malignancies. Other more, the DOX payload in PgEMC NPs could be synchronously released with the intracellular disassembly of PgEMC NPs due to the detaching of cinnamylaldehyde moieties. In 4T1 cells treated with PgEMC/DOX NPs, remarkably elevation of ROS level, and the enhanced DOX sensitivity in hypoxia environment were observed in vitro studies. Tumor spheroid penetration results certificated 60 nm sized DOX loaded PgEMC NPs (PgEMC60/DOX) could distribute into deep site of tumor at a high intensity. In vivo studies using a 4T1 breast tumor model, PgEMC60/DOX NPs showed significant inhibition over 95.4% of the tumor growth. These results reveal that integrated optimizing size, self inducing ROS and pH sensitive drug release into one small sized nanoparticle can efficiently overcome the poor tumor penetration and hypoxia induced chemotherapy resistance.