313 research outputs found
Beyond ANT and Sociomateriality: Explore Symbolic Power to Information System Adoption
IS adoption is inherently a social practice shaped by the immediate social context but capital power does not have a stronger presence in ANT and sociomateriality. The paper describes Bourdieu’s practice theory and suggests that by this lens we can better understand IS adoption (e.g., implementation of MRP II/ERP/ERP II) as symbolic capital changing power relations in an adopted organization. Such shift of power relations is viewed as accepting relation thinking mode and critical realism in IS adoption. From symbolic power perspective, character status and role prestige is ascribed to IS. Implementation of an IS are configuration of power relation designed by IS software vendors. By exploring IS as social inclusion and distinction, we review Ivy University’s Oracle ERP case beyond ANT and Social-materiality theory. We also applied symbolic capital of Bourdieu’s theory to explain“ERP adoption means find dying”by Liu Chuanzhi in Chinese Legend Company
How Does Enterprise Social Software Impact on Employees’ Innovation Behavior? The Role of Symbolic Capital
Organizations are increasingly adopting new technologies, such as enterprise social software (ESS), which afford employees a repertoire of uses. They not simply focused on work but also on socialization and entertainment. Previous research suggested that the implementation of ESS in an organization had an impact on their employee’s creative behavior. However, how does it impact on is still not clear. In the present study, the generative mechanism of the impact on their employee’s innovation behavior is investigated. Based on the practice theory of Bourdieu and theory of critical realism, a large number of interviews within four small medium enterprises was conducted by the grounded theory methodology. The results indicated that the impact on their employee’s creative behavior was accomplished by four steps, i.e., ESS usage, capitals reproduced, being recognized and practice of creation. The managerial implications from our study are discussed finally. Keywords: ESS, Symbolic capital, Innovation behavior, Generative mechanis
Synthesis of a Flexible Freestanding Sulfur/Polyacrylonitrile/Graphene Oxide as the Cathode for Lithium/Sulfur Batteries
Rechargeable lithium/sulfur (Li/S) batteries have received quite significant attention over
the years because of their high theoretical specific capacity (1672 mAh g1) and energy density
(2600 mAh g1) which has led to more efforts for improvement in their electrochemical performance.
Herein, the synthesis of a flexible freestanding sulfur/polyacrylonitrile/graphene oxide (S/PAN/GO)
as the cathode for Li/S batteries by simple method via vacuum filtration is reported. The S/PAN/GO
hybrid binder-free electrode is considered as one of the most promising cathodes for Li/S batteries.
Graphene oxide (GO) slice structure provides effective ion conductivity channels and increases
structural stability of the ternary system, resulting in excellent electrochemical properties of the
freestanding S/PAN/GO cathode. Additionally, graphene oxide (GO) membrane was able to
minimize the polysulfides’ dissolution and their shuttle, which was attributed to the electrostatic
interactions between the negatively-charged species and the oxygen functional groups on GO.
Furthermore, these oxygen-containing functional groups including carboxyl, epoxide and hydroxyl
groups provide active sites for coordination with inorganic materials (such as sulfur). It exhibits the
initial reversible specific capacity of 1379 mAh g1 at a constant current rate of 0.2 C and maintains
1205 mAh g1 over 100 cycles (~87% retention). In addition, the freestanding S/PAN/GO cathode
displays excellent coulombic efficiency (~100%) and rate capability, delivering up to 685 mAh g1
capacity at 2
From Offline to Online: A Study on the Practice of Learners' Self-Regulated Learning Based on Bourdieu's Theory
The research is financed by Reform of the Practical Teaching Mode of Enterprise Resource Planning Based on the Cultivation of Students' Learning Ability(55611219) Abstract At present, the migration of learners from offline classroom to online learning space faces the problem of high dropout rate. Previous research suggested that self-regulated learning practice is a key factor affecting the effectiveness of online learning, but the research on the driving causes of self-regulated learning is still in the exploration stage. In the study, the impact on self-regulated learning practice is investigated. Based on the practice theory of Bourdieu, a large number of interviews was conducted by the grounded theory methodology. The results indicated that the impact on learners' self-regulated learning practice was accomplished by four aspects, i.e., online field structured, capitals reproduced, new habitus generated and practice of self-regulated learning. The managerial implications from our study are discussed finally. Keywords: Bourdieu theory; self-regulated learning; practice DOI: 10.7176/EJBM/11-32-01 Publication date: November 30th 201
Correlative study on retinal microvascular changes and sex hormones in male patients with central serous chorioretinopathy
Central serous chorioretinopathy (CSC) is a
disease in which the outer retinal barrier is damaged with high incidence in
young adult males. We aimed to analyze the correlations between retinal
microvascular changes and sex hormone levels. The vascular density of the
superficial retinal capillary plexus (SCP), deep retinal capillary plexus (DCP),
foveal avascular zone (FAZ) area, choriocapillary blood flow area, and the
subfoveal choroidal thickness (SCT) were investigated by optical coherence
tomography angiography (OCTA). We also determined the levels of sex hormones
(adrenaline (AD), norepinephrine (NE), dopamine (DA), corticosteroids (Cor),
aldosterone (ALD), estradiol (E2) and total testosterone (TT)). The relationship
between sex hormone levels and OCTA parameters was then determined. We detected
significantly higher levels of NE, Cor and TT in serum from the observation group
than in the control group (p < 0.05). Significant correlations were
identified between SCT and choriocapillary blood flow area in the affected eyes,
contralateral eyes and healthy eyes in the control group (p < 0.05).
SCT levels of both eyes in the observation group were higher and the
choriocapillary blood flow area was smaller than in the control group. The SCT in
affected eyes from the observation group were higher than the contralateral eyes
(p < 0.05). The choriocapillary blood flow area was significantly
smaller than in the contralateral eyes (p < 0.05). Correlation
analysis unveiled that NE, Cor and TT levels were positively correlated with SCT
in CSC patients and negatively correlated with choriocapillary blood flow area
(p < 0.05). The serum levels of sex hormone levels in male CSC
patients were different from those in healthy men of the same age. Our findings
suggest that the serum levels of NE, Cor and TT levels may influence the
pathogenesis of CSC by affecting SCT thickness and choriocapillary blood flow
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SUPREME-HN: a retrospective biomarker study assessing the prognostic value of PD-L1 expression in patients with recurrent and/or metastatic squamous cell carcinoma of the head and neck.
BACKGROUND:Programmed cell death ligand-1 (PD-L1) expression on tumor cells (TCs) is associated with improved survival in patients with head and neck squamous cell carcinoma (HNSCC) treated with immunotherapy, although its role as a prognostic factor is controversial. This study investigates whether tumoral expression of PD-L1 is a prognostic marker in patients with recurrent and/or metastatic (R/M) HNSCC treated with standard chemotherapy. METHODS:This retrospective, multicenter, noninterventional study assessed PD-L1 expression on archival R/M HNSCC tissue samples using the VENTANA PD-L1 (SP263) Assay. PD-L1 high was defined as PD-L1 staining of ≥ 25% TC, with exploratory scoring at TC ≥ 10% and TC ≥ 50%. The primary objective of this study was to estimate the prognostic value of PD-L1 status in terms of overall survival (OS) in patients with R/M HNSCC. RESULTS:412 patients (median age, 62.0 years; 79.9% male; 88.2% Caucasian) were included from 19 sites in seven countries. 132 patients (32.0%) had TC ≥ 25% PD-L1 expression; 199 patients (48.3%) and 85 patients (20.6%) had TC ≥ 10% and ≥ 50%, respectively. OS did not differ significantly across PD-L1 expression (at TC ≥ 25% cutoff median OS: 8.2 months vs TC < 25%, 10.1 months, P = 0.55) or the ≥ 10% and ≥ 50% cutoffs (at TC ≥ 10%, median OS: 9.6 months vs TC < 10%, 9.4 months, P = 0.32, and at TC ≥ 50%, median OS 7.9 vs TC < 50%, 10.0 months, P = 0.39, respectively). CONCLUSIONS:PD-L1 expression, assessed using the VENTANA PD-L1 (SP263) Assay, was not prognostic of OS in patients with R/M HNSCC treated with standard of care chemotherapies. Trial registration ClinicalTrials.gov, NCT02543476. Registered September 4, 2015
Effects of Active Components of Fuzi and Gancao Compatibility on Bax, Bcl-2, and Caspase-3 in Chronic Heart Failure Rats
Hypaconitine (HA) and glycyrrhetinic acid (GA) are active components of Fuzi (Aconitum carmichaelii) and Gancao (Glycyrrhiza uralensis Fisch); they have been used in compatibility for chronic heart failure (CHF) from ancient times. The purpose of the present research was to explore whether apoptosis pathways were related with the protective effects of HA + GA against CHF rats or not. The rats were progressed with transverse-aortic constriction (TAC) operation for 4 weeks to build the CHF state, and then the Digoxin (1 mg/kg), HA (2.07 mg/kg), GA (25 mg/kg), and HA (2.07 mg/kg) + GA (25 mg/kg) were orally administrated to rats for 1 week. The levels of BNP and cTnI in the plasma were decreased in the HA + GA group, and the heart/body weight ratio (H/B) and left ventricular (LV) parameters of transthoracic echocardiography were also declined; moreover, the expressions of Bax, Bcl-2, and caspase-3 were all improved in the HA + GA group than other groups in the immunohistochemistry and western blot methods. In general, the data suggested that Fuzi and Gancao compatibility could protect the CHF rats from apoptosis, which provided a strong evidence for further searching for mechanisms of them
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