bluuebunny/crossref_metadata_2025_split huggingface dataset:
UNDERSTANDING INVESTORS’ BEHAVIOR DURING STOCK PRICE MANIPULATION: A CASE OF INDONESIA’S STOCK MARKET
Authors: Akbar Riznaldi 
Published: December 2017

Penelitian ini mencoba untuk mencari pola tekstual yang berkaitan dengan perilaku investor dan sentimen selama manipulasi harga saham di Bursa Efek Indonesia. Kami mengusulkan analisis text mining untuk menunjukkan proses penggalian informasi dari berita dan media rilis Tweeter selama periode 2000 sampai 2014. Kami mengambil tiga sampel perusahaan dari PT AGIS Tbk (TMPI), PT Garda Tujuh Buana Tbk (GTBO) dan PT Bumi Resources Tbk (BUMI) yang telah ditunjukkan mengalami manipulasi harga saham. Perusahaan-perusahaan ini mengalami harga saham apresiasi abnormal dan diikuti dengan penurunan tajam dari sekitar 90 persen dalam waktu singkat. Informasi yang diekstrak dari Tweeter dan analisis sentimen memberikan bukti bahwa berita dan media rilis cenderung menghasilkan umum istilah kunci negatif seperti "terjun", "drop", dan "jatuh"; serta istilah yang terkait dengan laporan laba rugi seperti "kehilangan", "keuntungan", "bersih", "penjualan" dan "pendapatan" .Ini menunjukkan bahwa sebagian besar investor akan memiliki bias negatif dan menderita lebih ketika harga saham mengalami signifikan menurun. Hal ini juga mengungkapkan bahwa investor lebih cupet pada laporan laba rugi daripada menganalisis gambaran besar dari penilaian dasar perusahaan secara keseluruhan. Dengan demikian kita berpendapat bahwa basis pengetahuan ini dan istilah kunci dapat digunakan untuk mencerminkan karakteristik umum dari perilaku investor selama manipulasi harga saham di pasar saham Indonesia.This study attempts to search textual patterns that are associated with investor behavior and sentiment during stock price manipulation in Indonesia’s Stock Market. We propose text mining analysis to demonstrate the process of extracting information from news and media release of Tweeter over the period of 2000 to 2014. We took three sample firms of PT AGIS Tbk (TMPI), PT Garda Tujuh Buana Tbk (GTBO) and PT Bumi Resources Tbk (BUMI) that have been indicated experiencing stock price manipulation. These firms experienced an abnormal stock price appreciation and followed with a sharp decline of about 90 per cent within short period of time. The extracted information from Tweeter and sentiment analysis provide evidence that news and media releases tend to yield common negative key terms such as “plunge”, “drop”, and “fall”; as well as terms related to income statements such as “loss”, “profit”, “net”, “sales” and “revenue”.It shows us that most investors would have negative bias and suffer more when the stock price experienced a significant decline. It also reveals that investors are more short-sighted on the profit and loss statements rather than analyzing the big picture of corporate fundamental valuation as a whole. We thus argue that these knowledge bases and key terms could be used to reflect common characteristics of investor behavior during stock price manipulation in the Indonesia’s stock market.
Effect of product quality, perceived price and brand image on purchase decision mediated by customer trust (study on japanese brand electronic product)
Authors: Suhaily Lily , Darmoyo Syarief 
Published: December 2017

Today the economic growth in many parts of the world has increased, especially in developing country, such Indonesia country. With increased economic growth, income and purchasing power of consumers also increased especially in big city like Jakarta. Increased incomes allow consumers to meet their secondary and tertiary needs such air conditioning (AC), washing machine, refrigerator with advanced technology. The purpose of this study was to determine the effect of product quality, perceived price and brand image of the brand purchase decision on Japan's electronics are mediated by consumer trust. Population of this research is visitors of electronic city outlet in South Jakarta and questionnaires were distributed to 376 visitors Electronics City in SCBD and in Pondok Indah Mall using multistage cluster random sampling technique. Data were analyzed using Structural Equation Modeling ( SEM ). The results showed that there are product quality and perceived price have significant and positive effect of the purchase decision; product quality, brand image and perceived price have significant and positive effect of the customer trust; customer trust has significant and positive effect of the purchase decision; no effect of brand image of purchase decision; product quality, perceived price and brand image of the purchase decision mediated by consumer trust in electronic products of Japanese brand
Epidermoid cysts of the cavernous sinus: clinical features, surgical outcomes, and literature review
Authors: Zhou Feng , Yang Zixiao , Zhu Wei , Chen Liang , Song Jianping , Quan Kai , Li Sichen , Li Peiliang , Pan Zhiguang , Liu Peixi , Mao Ying 
Published: December 2017

OBJECTIVEEpidermoid cysts of the cavernous sinus (CS) are rare, and no large case series of these lesions has been reported. In this study, the authors retrospectively reviewed the outcomes of the surgical management of CS epidermoid cysts undertaken at their center and performed a review of any such cysts reported in the literature over the past 40 years.METHODSClinical data were obtained on 31 patients with CS epidermoid cysts that had been surgically treated at the authors’ hospital between 2001 and 2016. The patients’ medical records, imaging data, and follow-up outcomes were retrospectively analyzed. The related literature from the past 40 years (18 articles, 20 patients) was also evaluated.RESULTSThe most common chief complaints were facial numbness or hypesthesia (64.5%), absent corneal reflex (45.2%), and abducens or oculomotor nerve deficit (35.5%). On MRI, 51.6% of the epidermoid cysts showed low T1 signals and equal or high T2 signals. In the other lesions, the radiological findings varied considerably given differences in the composition of the cysts. Surgery was performed via the extradural approach (58.1%), intradural approach (32.3%), or a combined approach (9.7%). After the operation, symptoms remained similar or improved in 90.3% of patients and new oculomotor paralysis developed after the operation in 9.7% of patients. Seven patients (22.6%) developed meningitis postoperatively (5 aseptic and 2 septic), and all of them recovered. All patients achieved good recovery before discharge (Karnofsky Performance Status score ≥ 70). Over an average follow-up of 4.6 ± 3.0 years in 25 patients (80.6%), no recurrence or reoperation occurred, regardless of whether total or subtotal resection of the capsule had been achieved.CONCLUSIONSBoth the extradural and intradural approaches can enable satisfactory lesion resection. A favorable prognosis and symptomatic improvement can be expected after both total and subtotal capsule resections. Total capsule resection is encouraged to minimize the possibility of recurrence provided that the resection can be safely performed.
Laboratory assessments of therapeutic platelet inhibition in endovascular neurosurgery: comparing results of the VerifyNow P2Y12 assay to thromboelastography with platelet mapping
Authors: Corliss Brian M. , Polifka Adam J. , Harris Neil S. , Hoh Brian L. , Fox W. Christopher 
Published: December 2017

OBJECTIVEInhibition of platelet aggregation is vital to preventing thromboembolic complications related to stent placement in endovascular neurosurgery, but excessive inhibition potentiates hemorrhagic complications. Recent evidence suggests an ideal inhibition range of 70–150 P2Y12 response units (PRU) as measured on the VerifyNow assay, which relies on photometric measurements of platelet aggregation. Thromboelastography (TEG) with platelet mapping (PM) is an alternative assay that directly measures clot formation and mechanical strength. This study compares the results of PRU to TEG-PM.METHODSPatients with simultaneous or near-simultaneous PRU and TEG-PM results who underwent cervical carotid artery stenting, intracranial stent-assisted aneurysm coiling, or flow diversion at the authors’ institution between August 2015 and November 2016 were identified. PRU results were compared with the TEG maximal amplitude (MA) attributable to adenosine diphosphate (ADP) activity (MA-ADP) as measured by TEG-PM. Platelet inhibition was considered therapeutic for MA-ADP values < 50 mm or PRU < 194. The Pearson correlation coefficient was calculated, and the sensitivity and specificity of PRU were calculated assuming that the results of TEG-PM reflected the true degree of platelet inhibition.RESULTSTwenty-three patients were identified with a total of 37 matched sets of TEG-PM and PRU. Three of these pairs were excluded due to anemia outside of the PRU manufacturer’s recommended range. The Pearson correlation coefficient for these values was 0.50 (p = 0.0026). The prevalence of clopidogrel nonresponders determined by TEG-PM (9%) matched reported rates (5%–12%); PRU demonstrated much higher prevalence (39%). For detecting a therapeutic level of platelet inhibition, PRU demonstrated a sensitivity of 0.59, specificity of 0.50, positive predictive value of 0.95, and negative predictive value of 0.07. Ideal inhibition was concordant in only 25% of observations in which at least one of the results was ideal.CONCLUSIONSAgreement between TEG-PM and PRU regarding the degree of platelet inhibition is poor. PRU likely overestimates clopidogrel resistance, as 93% of patients with PRU > 194 demonstrate a therapeutic level of platelet inhibition on TEG.
Presentation and outcomes in surgically and conservatively managed pediatric Rathke cleft cysts
Authors: Shepard Matthew J. , Elzoghby Mohamed A. , Kiehna Erin N. , Payne Spencer C. , Jane John A. 
Published: December 2017

OBJECTIVERathke cleft cysts (RCCs) are sellar lesions that are commonly encountered in adults but infrequently diagnosed in the pediatric population. As a result, the optimal management of pediatric RCCs remains a subject of controversy. Only 2 prior surgical series have been published on pediatric RCCs and no study has compared the presentation and outcomes of surgically versus conservatively managed cases. The authors therefore performed a comparative analysis of pediatric cases of RCC in which patients were treated with surgery or managed in a conservative manner.METHODSAll cases involving pediatric patients diagnosed with an RCC at the University of Virginia between 2000 and 2016 were included in this study. Patient medical records, operative notes, and neuroimaging findings were reviewed. Patients who developed visual field deficits, radiographic evidence of chiasmal compression, or medically refractory headaches were considered candidates for surgical intervention. All patients who were selected for surgery underwent an endoscopic endonasal approach with cyst fenestration.RESULTSA total of 24 pediatric patients were diagnosed with an RCC over a 16-year period. Seven patients ultimately underwent transsphenoidal cyst fenestration, and 17 were managed conservatively. The patients’ age at diagnosis, cyst size, and pituitary function at the time of RCC diagnosis were similar in the conservatively and surgically managed cohorts. At diagnosis, 19 of 24 patients endorsed headaches that led to neuroimaging. All patients in the surgical cohort endorsed severe headaches at diagnosis compared with 71% in the conservative group. For the 7 patients treated with surgery, complete cyst evacuation was achieved in 86% of cases. Transient postoperative endocrinopathy occurred in 4 (57%) of 7 surgically treated individuals and resolved in all cases. In the conservative cohort, 1 patient developed a delayed pituitary-related endocrinopathy. Headache resolution occurred in 5 (71%) of the 7 patients who underwent surgery and 7 (58%) of the 12 who were treated without surgery. Cyst recurrence was documented in 1 individual in the surgical cohort who underwent a subtotal cyst fenestration that ultimately required re-intervention. In the conservative cohort, spontaneous cyst shrinkage occurred in 35% of patients with a median time to regression of 23.5 months.CONCLUSIONSPediatric RCCs are benign sellar lesions that often present with headaches. While cyst fenestration mitigates headaches in most patients, the majority of conservatively managed pediatric patients with RCCs will have spontaneous headache resolution. Furthermore, spontaneous RCC regression occurs in a substantial number of individuals. Thus, in the absence of optic compression, visual field deficit, or diagnostic uncertainty, many pediatric cases of RCC can be managed conservatively.
Des marchés au service de l’État ?
Authors: Ansaloni Matthieu , Smith Andy 
Published: December 2017

Ce dossier prend pour objet une modalité de régulation politique centrale, celle par laquelle les agents de l’État, pour prendre en charge un problème public, initient un marché. La réflexion s’organise autour de deux questions : la première traite de la généralisation, à partir des années 1980, de cette pratique gouvernementale ; la seconde porte sur ses effets, notamment la contribution des agents de l’État à peser sur les régulations économiques et sociales. Prenant pour appui les études de cas que regroupe ce dossier, cette introduction suggère deux lignes d’analyse : la première est que cette modalité de régulation, qui puise principalement dans les phénomènes traditionnels de délégation (privé et public), présente une faible innovation instrumentale. Son essor résulte non pas tant d’un grand dessein politique, mais davantage d’une série d’expérimentations qui ont gagné des secteurs toujours plus nombreux. Rejetant le débat clivé entre gouvernement à distance versus désengagement de l’État, la seconde ligne d’analyse est que la capacité de cette modalité de régulation politique à orienter les comportements des individus dépend de l’autonomie du segment administratif qui la porte, ainsi que des instruments que leurs agents développent.
La mise en marché de la frontière, un produit d’État
Authors: Infantino Federica 
Published: December 2017

Tout en restant une activité emblématique de l’exercice de la souveraineté, le contrôle des frontières se réalise de plus en plus avec l’appui de compagnies privées. À partir d’une enquête essentiellement ethnographique, cette contribution offre une lecture sociologique du processus qui a conduit à l’adoption de la coopération public-privé afin de mettre en œuvre la politique du visa Schengen dans les consulats. L’article montre quelles sont les configurations d’acteurs privés et publics à l’origine de la délégation de « tâches administratives » à des entreprises privées. En suivant la fabrication de cette politique, des enceintes européennes jusqu’aux ministères nationaux et les organisations privées et publiques qui la traduisent en pratiques, cet article met en exergue le décalage entre le cadrage qui entend la coopération comme stratégie d’amélioration du service public et les logiques étatiques de ce choix. Dans un contexte de réforme des règles européennes, les États signataires de l’accord de Schengen ont utilisé la coopération avec des compagnies privées pour d’autres objectifs : réduire les coûts du contrôle européanisé, se défaire du fardeau de la mise en œuvre, dégager la responsabilité des gouvernants.
Une construction sociale de l’utilité publique
Authors: Gaboriaux Chloé 
Published: December 2017

Cet article envisage le rapport entre l’État et la philanthropie à travers la procédure de reconnaissance d’utilité publique des associations et fondations telle qu’elle est pratiquée au début de la Troisième République. Plus précisément, il s’interroge sur la façon dont les membres du Conseil d’État, que le gouvernement doit consulter en la matière, jugent de la recevabilité des demandes qui leur sont soumises. Il montre qu’au-delà des critères juridiques, malléables, ces grands serviteurs de l’État s’appuient sur leur connaissance des œuvres, partielle et partiale puisque limitée à la « nébuleuse réformatrice » dont ils font partie.
Petits arrangements avec l’égalitarisme
Authors: Le Renard Saba A. 
Published: December 2017

L’article analyse les positionnements ambivalents des résidentes françaises de Dubaï qui emploient des domestiques vivant à demeure. À travers un travail moral de justification, ces personnes, structurellement avantagées dans un ordre social qu’elles jugent injuste, cherchent à se distinguer des employeurs « locaux » perçus comme esclavagistes. Elles s’identifient à un « Occident » pensé comme égalitaire et déploient plusieurs arguments : elles n’auraient aucune influence sur des sociétés vivant dans une époque jugée antérieure à la leur ; elles permettraient aux employées domestiques d’échapper à des employeurs maltraitants. Leurs propos égalitaristes façonnent des exigences particulières vis-à-vis des employées domestiques, dont il est attendu qu’elles masquent autant que possible l’asymétrie de la relation.
Les courtiers-producteurs du développement agricole : Tabaculture et différenciation sociale en zone rurale au Malawi
Authors: Grassin Paul 
Published: December 2017

Au Malawi, le contrôle de la production du tabac repose sur la cooptation d’une frange de la population productrice chargée d’assurer la traduction et la diffusion du discours productiviste au sein des communautés paysannes. Se déployant à l’interface entre la filière du tabac, sa « culture du business » et les contraintes sociales, morales et matérielles du village, les trajectoires sociales de ces « courtiers-producteurs » sont l’occasion d’observer les modalités pratiques de l’enchâssement des relations d’échange et de production dans leurs contextes socio-politiques locaux.
« La lettre morte » – Friedrich Kittler en correspondance avec les poststructuralistes
Authors: Schwerzmann Katia 
Published: December 2017

Quand un document reste sans effets, on parle de « lettre morte ». Une telle « lettre » a certes été adressée mais n’a pas encore trouvé son destinataire. La Medientheorie allemande, dont Friedrich Kittler est l’un des fondateurs et l’un des plus importants représentants, est conçue dans cet article à partir de la circulation de lettres philosophiques entre la France et l’Allemagne. Une origine possible de cet échange est la Lettre sur l’humanisme de Heidegger qui provoqua les envois-réponses de Lacan, Foucault et Derrida, lesquels suscitèrent, dans l’Allemagne des années 1980, la Medientheorie de Friedrich Kittler. La réponse kittlérienne étant restée à ce jour en grande partie lettre morte en France, il s’agit de reconstruire, par le biais de la correspondance de Kittler avec les poststructuralistes, le trajet de ces lettres théoriques afin de raviver celle de Medientheorie.
The Horizontal Ice Nucleation Chamber (HINC): INP measurements at conditions relevant for mixed-phase clouds at the High Altitude Research Station Jungfraujoch
Authors: Lacher Larissa , Lohmann Ulrike , Boose Yvonne , Zipori Assaf , Herrmann Erik , Bukowiecki Nicolas , Steinbacher Martin , Kanji Zamin A. 
Published: December 2017

Abstract. In this work we describe the Horizontal Ice Nucleation Chamber (HINC) as a new instrument to measure ambient ice-nucleating particle (INP) concentrations for conditions relevant to mixed-phase clouds. Laboratory verification and validation experiments confirm the accuracy of the thermodynamic conditions of temperature (T) and relative humidity (RH) in HINC with uncertainties in T of ±0.4 K and in RH with respect to water (RHw) of ±1.5 %, which translates into an uncertainty in RH with respect to ice (RHi) of ±3.0 % at T > 235 K. For further validation of HINC as a field instrument, two measurement campaigns were conducted in winters 2015 and 2016 at the High Altitude Research Station Jungfraujoch (JFJ; Switzerland, 3580 m a. s. l. ) to sample ambient INPs. During winters 2015 and 2016 the site encountered free-tropospheric conditions 92 and 79 % of the time, respectively. We measured INP concentrations at 242 K at water-subsaturated conditions (RHw = 94 %), relevant for the formation of ice clouds, and in the water-supersaturated regime (RHw = 104 %) to represent ice formation occurring under mixed-phase cloud conditions. In winters 2015 and 2016 the median INP concentrations at RHw = 94 % was below the minimum detectable concentration. At RHw = 104 %, INP concentrations were an order of magnitude higher, with median concentrations in winter 2015 of 2.8 per standard liter (std L−1; normalized to standard T of 273 K and pressure, p, of 1013 hPa) and 4.7 std L−1 in winter 2016. The measurements are in agreement with previous winter measurements obtained with the Portable Ice Nucleation Chamber (PINC) of 2.2 std L−1 at the same location. During winter 2015, two events caused the INP concentrations at RHw = 104 % to significantly increase above the campaign average. First, an increase to 72.1 std L−1 was measured during an event influenced by marine air, arriving at the JFJ from the North Sea and the Norwegian Sea. The contribution from anthropogenic or other sources can thereby not be ruled out. Second, INP concentrations up to 146.2 std L−1 were observed during a Saharan dust event. To our knowledge this is the first time that a clear enrichment in ambient INP concentration in remote regions of the atmosphere is observed during a time of marine air mass influence, suggesting the importance of marine particles on ice nucleation in the free troposphere.
Temperature uniformity in the CERN CLOUD chamber
Authors: Dias António , Ehrhart Sebastian , Vogel Alexander , Williamson Christina , Almeida João , Kirkby Jasper , Mathot Serge , Mumford Samuel , Onnela Antti 
Published: December 2017

Abstract. The CLOUD (Cosmics Leaving OUtdoor Droplets) experiment at CERN (European Council for Nuclear Research) investigates the nucleation and growth of aerosol particles under atmospheric conditions and their activation into cloud droplets. A key feature of the CLOUD experiment is precise control of the experimental parameters. Temperature uniformity and stability in the chamber are important since many of the processes under study are sensitive to temperature and also to contaminants that can be released from the stainless steel walls by upward temperature fluctuations. The air enclosed within the 26 m3 CLOUD chamber is equipped with several arrays (strings) of high precision, fast-response thermometers to measure its temperature. Here we present a study of the air temperature uniformity inside the CLOUD chamber under various experimental conditions. Measurements were performed under calibration conditions and run conditions, which are distinguished by the flow rate of fresh air and trace gases entering the chamber at 20 and up to 210 L min−1, respectively. During steady-state calibration runs between −70 and +20 °C, the air temperature uniformity is better than ±0.06 °C in the radial direction and ±0.1 °C in the vertical direction. Larger non-uniformities are present during experimental runs, depending on the temperature control of the make-up air and trace gases (since some trace gases require elevated temperatures until injection into the chamber). The temperature stability is ±0.04 °C over periods of several hours during either calibration or steady-state run conditions. During rapid adiabatic expansions to activate cloud droplets and ice particles, the chamber walls are up to 10 °C warmer than the enclosed air. This results in temperature differences of ±1.5 °C in the vertical direction and ±1 °C in the horizontal direction, while the air returns to its equilibrium temperature with a time constant of about 200 s.