scholarly journals Analysis of female drivers’ ECG characteristics within the context of connected vehicles

2019 ◽  
Vol 2 (2) ◽  
pp. 55-66
Author(s):  
Xiaoyuan Wang ◽  
Yongqing Guo ◽  
Chen Chen ◽  
Yuanyuan Xia ◽  
Yaqi Liu
Keyword(s):  
Warning System ◽  
Connected Vehicles ◽  
Emotional States ◽  
Driver Assistance ◽  
S Wave ◽  
Test Analysis ◽  
Content Type ◽  
Ecg Signals ◽  
Significant Difference ◽  
Visual Materials

Purpose This study aims to analyze the differences of electrocardiograph (ECG) characteristics for female drivers in calm and anxious states during driving. Design/methodology/approach The authors used various materials (e.g. visual materials, auditory materials and olfactory materials) to induce drivers’ mood states (calm and anxious), and then conducted the real driving experiments and driving simulations to collect driver’s ECG signal dynamic data. Physiological changes in ECG during the stimulus process were recorded using PSYLAB software. The paired T-test analysis was conducted to determine if there is a significant difference in driver’s ECG characteristics between calm and anxious states during driving. Findings The results show significant differences in the characteristic parameters of female driver’s ECG signals, including (average heart rate), (atrioventricular interval), (percentage of NN intervals > 50ms), (R wave average peak), (Root mean square of successive), (Q wave average peak) and ( S wave average peak), in time domain, frequency domain and waveform in emotional states of calmness and anxiety. Practical implications Findings of this work show that ECG can be used to identify driver’s anxious and calm states during driving. It can be used for the development of personalized driver assistance system and driver warning system. Originality/value Only a few attempts have been made on the influence of human emotions on physiological signals in the transportation field. Hence, there is a need for transport scholars to begin to identify driver’s ECG characteristics under different emotional states. This study will analyze the differences of ECG characteristics for female drivers in calm and anxious states during driving to provide a theoretical basis for developing the intelligent and connected vehicles.

scholarly journals Stakeholder perceptions on critical success factors for public-private partnership projects in Nigeria

2016 ◽  
Vol 6 (1) ◽  
pp. 74-91 ◽  
Author(s):  
Solomon Olusola Babatunde ◽  
Srinath Perera ◽  
Lei Zhou ◽  
Chika Udeaja
Keyword(s):  
Factor Analysis ◽  
Critical Success Factors ◽  
Success Factors ◽  
Public Private Partnership ◽  
Successful Implementation ◽  
Test Analysis ◽  
Private Partnership ◽  
Content Type ◽  
Critical Success ◽  
Significant Difference

Purpose – The purpose of this paper is to identify and assess the perceptions of stakeholders on critical success factors (CSFs) for Public Private Partnership (PPP) projects in Nigeria. Design/methodology/approach – A comprehensive literature review was conducted to identify the CSFs for PPP projects, which were employed to design a questionnaire survey. In order to capture a broad perception of stakeholders, the questionnaires were administered to five different stakeholder organisations involved in different PPP projects implementation in Nigeria. Data collected were analysed using descriptive statistics, mean score, Kruskal-Wallis test, analysis of variance (ANOVA), and factor analysis. Findings – The study revealed the result of mean score ranking, which indicated that all the stakeholders considered the identified 26 CSFs important and crucial for the successful implementation of PPP projects in Nigeria. Thus, the results of Kruskal-Wallis test and ANOVA indicated that except for six (out of 26) identified CSFs, there is no statistically significant difference in the perceptions of the stakeholders on CSFs for PPP projects in Nigeria. The study, through factor analysis, grouped the 26 identified CSFs into six principal factors. Practical implications – This research would be of benefit to stakeholders in PPPs to be aware of CSFs that demand utmost consideration. Also the identified CSFs are expected to enhance the success rate of PPP projects. Originality/value – The findings would be useful for PPP stakeholders in making decisions and in implementing PPP projects towards achieving value for money. This research will also be of interest to other academic researchers intending to investigate CSFs for PPP projects in other locations.

scholarly journals Evaluation of fog warning system on driving under heavy fog condition based on driving simulator

2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Xiaohua Zhao ◽  
Xuewei Li ◽  
Yufei Chen ◽  
Haijian Li ◽  
Yang Ding
Keyword(s):  
Transition Zone ◽  
Driving Simulator ◽  
Warning System ◽  
Subjective Perception ◽  
Traffic Crashes ◽  
Content Type ◽  
Speed Reduction ◽  
Driver Performance ◽  
Significant Difference ◽  
The One

Purpose Heavy fog results in low visibility, which increases the probability and severity of traffic crashes, and fog warning system is conducive to the reduction of crashes by conveying warning messages to drivers. This paper aims at exploring the effects of dynamic message sign (DMS) of fog warning system on driver performance. Design/methodology/approach First, a testing platform was established based on driving simulator and driver performance data under DMS were collected. The experiment route was consisted of three different zones (i.e. warning zone, transition zone and heavy fog zone), and mean speed, mean acceleration, mean jerk in the whole zone, ending speed in the warning zone and transition zone, maximum deceleration rate and mean speed reduction proportion in the transition zone and heavy fog zone were selected. Next, the one-way analysis of variance was applied to test the significant difference between the metrics. Besides, drivers’ subjective perception was also considered. Findings The results indicated that DMS is beneficial to reduce speed before drivers enter the heavy fog zone. Besides, when drivers enter a heavy fog zone, DMS can reduce the tension of drivers and make drivers operate more smoothly. Originality/value This paper provides a comprehensive approach for evaluating the effectiveness of the warning system in adverse conditions based on the driving simulation test platform. The method can be extended to the evaluation of vehicle-to-infrastructure technology in other special scenarios.

Gamma knife radiosurgery for intracranial metastatic melanoma: a 6-year experience

2002 ◽  
Vol 97 ◽  
pp. 494-498 ◽  
Author(s):  
Jorge Gonzalez-martinez ◽  
Laura Hernandez ◽  
Lucia Zamorano ◽  
Andrew Sloan ◽  
Kenneth Levin ◽  
...  
Keyword(s):  
Prognostic Factors ◽  
Brain Metastases ◽  
Metastatic Melanoma ◽  
Gamma Knife Radiosurgery ◽  
Tumor Control ◽  
Karnofsky Performance Scale ◽  
Content Type ◽  
Significant Difference ◽  
The Mean ◽  
Fine Print

Object. The purpose of this study was to evaluate retrospectively the effectiveness of stereotactic radiosurgery for intracranial metastatic melanoma and to identify prognostic factors related to tumor control and survival that might be helpful in determining appropriate therapy. Methods. Twenty-four patients with intracranial metastases (115 lesions) metastatic from melanoma underwent radiosurgery. In 14 patients (58.3%) whole-brain radiotherapy (WBRT) was performed, and in 12 (50%) chemotherapy was conducted before radiosurgery. The median tumor volume was 4 cm3 (range 1–15 cm3). The mean dose was 16.4 Gy (range 13–20 Gy) prescribed to the 50% isodose at the tumor margin. All cases were categorized according to the Recursive Partitioning Analysis classification for brain metastases. Univariate and multivariate analyses of survival were performed to determine significant prognostic factors affecting survival. The mean survival was 5.5 months after radiosurgery. The analyses revealed no difference in terms of survival between patients who underwent WBRT or chemotherapy and those who did not. A significant difference (p < 0.05) in mean survival was observed between patients receiving immunotherapy or those with a Karnofsky Performance Scale (KPS) score of greater than 90. Conclusions. The treatment with systemic immunotherapy and a KPS score greater than 90 were factors associated with a better prognosis. Radiosurgery for melanoma-related brain metastases appears to be an effective treatment associated with few complications.

Gamma knife radiosurgery for metastatic brain tumors from lung cancer: a comparison between small cell and non—small cell carcinoma

2002 ◽  
Vol 97 ◽  
pp. 484-488 ◽  
Author(s):  
Toru Serizawa ◽  
Junichi Ono ◽  
Toshihiko Iichi ◽  
Shinji Matsuda ◽  
Makoto Sato ◽  
...  
Keyword(s):  
Lung Cancer ◽  
Brain Tumors ◽  
Gamma Knife ◽  
Gamma Knife Radiosurgery ◽  
Small Cell ◽  
Metastatic Brain Tumors ◽  
Cell Lung Carcinoma ◽  
Content Type ◽  
Significant Difference ◽  
Fine Print

Object. The purpose of this retrospective study was to evaluate the effectiveness of gamma knife radiosurgery (GKS) for the treatment of metastatic brain tumors from lung cancer, with particular reference to small cell lung carcinoma (SCLC) compared with non-SCLC (NSCLC). Methods. Two hundred forty-five consecutive patients meeting the following five criteria were evaluated in this study: 1) no prior brain tumor treatment; 2) 25 or fewer lesions; 3) a maximum of three tumors with a diameter of 20 mm or larger; 4) no surgically inaccessible tumor 30 mm or greater in diameter; and 5) more than 3 months of life expectancy. According to the same treatment protocol, large tumors (≥ 30 mm) were surgically removed and the other small lesions (< 30 mm) were treated with GKS. New lesions were treated with repeated GKS. Chemotherapy was administered, according to the primary physician's protocol, as aggressively as possible. Progression-free, overall, neurological, qualitative, and new lesion—free survival were calculated with the Kaplan—Meier method and were compared in the SCLC and NSCLC groups by using the log-rank test. The poor prognostic factors for each type of survival were also analyzed with the Cox proportional hazard model. Conclusions. Tumor control rate at 1 year was 94.5% in the SCLC group and 98% in the NSCLC group. The median survival time was 9.1 months in the SCLC group and 8.6 months in the NSCLC group. The 1-year survival rates in the SCLC group were 86.5% for neurological survival and 68.9% for qualitative survival; those in the NSCLC group were 87.9% for neurological and 78.9% for qualitative survival. The estimated median interval to emergence of a new lesion was 6.9 months in the SCLC group and 9.8 months in the NSCLC group. There was no significant difference between the two groups for any type of survival; this finding was verified by multivariate analysis. The results of this study suggest that GKS appears to be as effective in treating brain metastases from SCLC as for those from NSCLC.

ANALISIS KINERJA KEUANGAN PERUSAHAAN PROPERTI YANG TERDAFTAR DI BEI SEBELUM DAN SESUDAH KEBIJAKAN LOAN TO VALUE

2019 ◽  
Vol 4 (1) ◽  
pp. 79-90
Author(s):  
Ghaniy Ridha Prima ◽  
Hermanto Siregar ◽  
Ferry Syarifuddin
Keyword(s):  
Real Estate ◽  
Financial Performance ◽  
Stock Exchange ◽  
Sample Selection ◽  
Test Analysis ◽  
Asset Return ◽  
Return On Equity ◽  
Analysis Technique ◽  
Significant Difference ◽  
Before And After

The purpose of this study is to provide empirical evidence of the effects of the Loan to Value (LTV) policy on the financial performance of property and real estate companies listed on the Indonesia Stock Exchange (IDX). The sample selection uses a purposive sampling method of 42 property and real estate companies that meet the criteria. The research period is divided into 2 namely before the Loan to Value policy (2013-2014) and after the Loan to Value policy (2016-2017) with the Paired Sample t Test analysis technique. The test results show if the current ratio, Return on Asset, Return on Equity and Debt to Asset have significant differences between before and after the LTV policy is applied. While the fast ratio, cash ratio, net profit margin and Debt to Equity did not show a significant difference. Keywords: Financial Performance, Loan to Value, Property and Real Estate, Profitability Ratio, Liquidity Ratio, Solvability Ratio.

Residents’ perception towards tourism impacts in Kashmir

2020 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Asif Hamid Charag ◽  
Asif Iqbal Fazili ◽  
Irfan Bashir
Keyword(s):  
Planning Process ◽  
Economic Impacts ◽  
Tourism Development ◽  
Policy Framework ◽  
Social Implications ◽  
Cultural Economic ◽  
Tourism Impacts ◽  
Content Type ◽  
City Tourism ◽  
Significant Difference

Purpose The purpose of this study is to understand the residents’ perception towards environmental, social, cultural and economic impacts of tourism development in Kashmir. Design/methodology/approach The research instrument containing 27 items pertaining to six variables is adopted from the literature. A mix-method survey approach is used to solicit residents’ perceptions regarding environmental, social, cultural and economic impacts of the current level of tourism development. A total of 326 useful responses were subjected to descriptive statistics, analysis of variance (ANOVA) and post hoc analysis using SPSS (Version 22.0). Findings In general, the negative and positive impacts of tourism development are well perceived by the residents. The results indicate that the residents display positive perception regarding economic impacts, however, social and environmental impacts are negatively perceived. Furthermore, barring level of education, the study found no significant difference in the residents’ perception towards tourism impacts (environmental, social, cultural, economic, quality of life and cost of living). Research limitations/implications The paper identifies perceived impacts and issues of tourism development thereby, proposing possible mitigating measures. Also, the study identifies the need to develop a comprehensive policy framework addressing the issues related to the resident’s negative feelings towards tourism impacts. Further, the study envisages the need for engaging residents in developing a progressive and participatory planning process for future tourism activities in the area. Social implications The study offers critical social implications for city tourism development. It suggests a community-based approach should be adopted to sensitize residents about the positive benefits of tourism. Originality/value The study is a novel attempt concerning residents’ residents perceptual differences towards tourism impacts. Furthermore, this study investigated socio-cultural impacts of tourism under two separate categories for better understanding. in doing so, this study provides finer understanding of perception of residents towards tourism impacts in Indian context. The findings of the study will prove critical for different stakeholders in developing future tourism framework and policies in the region.

Effects of PETTLEP imagery technique on precision skills: a study on drag flick in Pakistan hockey

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Shamsa Hashmi ◽  
Tanveer Akhtar ◽  
Maniha Hashmi
Keyword(s):  
Control Group ◽  
Imagery Ability ◽  
Physical Practice ◽  
Test Analysis ◽  
Skill Levels ◽  
Substantial Impact ◽  
Significant Difference ◽  
Post Test ◽  
Imagery Scripts ◽  
Complex Motor Skills

AbstractPresent study was aimed at investigating the role of Physical, Environmental, Task, Timing, Learning, Emotion and Perspective (PETTLEP) Imagery technique in the improvement of skill precision level of hockey drag flickers. For this purpose, both male (83) and female (38) hockey drag flickers (n=121) of age ranged between 17 and 27 years were selected from different hockey teams belonging to clubs, colleges, universities, departments, regional and national academies of Pakistan. Participants were made to undergo a Pretest-Intervention-Posttest research design consisted of 20 drag flicks and filling of SIAQ questionnaire. Drag Flick Precision Measurement Test (DFPMT) along with Sports Imagery Ability Questionnaire (SIAQ) were used to measure their skill precision levels and their imagery ability. The participants were classified into three categories as per their skill precision levels (Point-based), ranging from 48 Novice (upto12 points), 42 Intermediate (13–18 points) and 31 Elite (19 points and above), and were randomly assigned to one of four intervention groups; Physical Practice (PP), PETTLEP Imagery Practice (IP), Physical Practice+PETTLEP Imagery Practice Combination (CP), and No Practice (NP) Control group. Each group performed their respective tasks for 10 weeks through specially designed physical training programs aided by Imagery scripts. Paired sample t test analysis showed that all groups improved significantly (p<0.05) from pre- to post-test, and the CP group improved more with average improvement value of 8.32 for DFPMT and 5.39 for SIAQ (p<0.05) than the IP, PP and NP groups. However, there was no significant difference found between the PP (Sig. 0.73) and NP (Sig. 0.44) groups in SIAQ. Result extend prior research findings and suggests that PETTLEP Imagery practice used in combination with Physical practice has substantial impact on improving performance of complex motor skills, Present findings showed that PETTLEP imagery model was found to improve player’s precision skill levels, especially when it was combined with physical practice. However, further studies in this connection are needed.

scholarly journals Rural Development Through Non-State Actors in Highlands of Pakistan

SAGE Open ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 215824402110071
Author(s):  
Muhammad Luqman ◽  
Saleem Ashraf ◽  
Babar Shahbaz ◽  
Tahir Munir Butt ◽  
Raheel Saqib
Keyword(s):  
Rural Development ◽  
Mixed Methods Research ◽  
Religious Faith ◽  
Research Area ◽  
Working Mechanism ◽  
Test Analysis ◽  
State Institutions ◽  
Significant Difference ◽  
State Actors ◽  
Household Heads

We explored the contribution and effectiveness of state and non-state institutions in rural development efforts in highlands (Khyber Pakhtunkhwa [KPK] province) of Pakistan. This study employed mixed-methods research design and data were collected from 300 household heads, randomly selected from six villages from two purposively selected districts Mansehra and Nowshehra. Findings showed people in KPK were deprived of due to conflicts, conspiracies and terrorism, poor governance, small landholdings and subsistence farming followed by sluggish marketing system, insufficient education and training for people, and inadequate employment opportunities. Regarding contribution, non-state institutions had more contribution as compared to state institutions. T-test analysis showed that the non-state institutions had an effective provision of agricultural extension and forestry advisory services, education, health services in remote areas, skill development, and provision of microcredit schemes. The results of F-test statistics showed highly significant difference among the perceived effectiveness of rural development activities of different types of non-state actors (localite, cosmopolite, and religious/faith-based) working in the research area. This study recommends state-owned rural development departments revisit their working mechanism and develop synergistic working relationship with the non-state institutions in discharging rural development efforts.

Designing a Cultural Heritage Articulated Warning System (CHAWS) strategy to improve disaster risk preparedness in Brazil

2019 ◽  
Vol 29 (1) ◽  
pp. 65-85
Author(s):  
Victor Marchezini ◽  
Allan Yu Iwama ◽  
Danilo Celso Pereira ◽  
Rodrigo Silva da Conceição ◽  
Rachel Trajber ◽  
...  
Keyword(s):  
At Risk ◽  
Cultural Heritage ◽  
Local Community ◽  
Warning System ◽  
Disaster Risk ◽  
Civil Defense ◽  
Content Type ◽  
Key Factor ◽  
Scientific Challenge ◽  
Risk Preparedness

Purpose The purpose of this paper is to study an articulated warning system that provides information about the heritage at risk and encourages a dialogue between the heritage sector, civil defense agencies and local communities. Design/methodology/approach The databases from the National Heritage Institute, National Civil Defense, National Geological Service and National Early Warning System were investigated and the local community provided input which helped form a participatory risk mapping strategy for a warning system in the heritage sector. Findings There is little knowledge of the Brazilian heritage that is at risk and a lack of coordination between the cultural heritage and DRR sectors. This means that there is a need to organize the geo-referenced databases so that information can be shared and the public provided with broader access. As a result, there can be a greater production, dissemination and application of knowledge to help protect the cultural heritage. Practical implications The findings can be included in the debate about the importance of framing disaster risk management (DRM) policies in the Brazilian heritage sector. Social implications The findings and maps of the case study in the town of São Luiz do Paraitinga involve the heritage sector, civil defense agencies and local people and can be used for disaster risk preparedness. Originality/value A DRM program is being formulated in Brazil. However, the kind of strategy needed to incorporate the heritage sector in this program stills needs to be planned, and the knowledge of the cultural heritage at risk is a key factor when faced with this new social and scientific challenge.

How label and nutritional claims affect consumers’ acceptance, buying intention and quality perception toward a beverage made from cashew nut

2019 ◽  
Vol 49 (6) ◽  
pp. 1243-1251 ◽  
Author(s):  
Marina Cabral Rebouças ◽  
Maria do Carmo Passos Rodrigues ◽  
Silvia Maria de Freitas
Keyword(s):  
New Product ◽  
Quality Attributes ◽  
Attitude Scale ◽  
Content Type ◽  
Cashew Nut ◽  
Significant Difference ◽  
Perception Of Quality ◽  
Two Phases ◽  
Mango Juice ◽  
Hedonic Scale

Purpose The purpose of this paper is to evaluate the influence of the front of a package label and the nutritional claims linked to it over consumers’ expectations as to acceptance, purchase attitude and perception of quality characteristics of a new functional beverage made from cashew nut milk and added with mango juice and prebiotic substances. Design/methodology/approach Three versions of the front label were developed, which differed just by the type of nutritional claim presented (“0 per cent lactose and 0 per cent cholesterol; 0 per cent lactose, 0 per cent cholesterol and source of fibers, 0 per cent lactose, 0 per cent cholesterol and antioxidants”) and were evaluated in two phases, expectation and informed. For the evaluation, consumers used a multi-attribute scale, the nine-point hedonic scale and a nine-point semi-structured buying attitude scale. Findings The labels created a positive expectation on the consumers regarding the quality attributes, overall impression (mean = 6.0 “Like slightly”) and buying attitude (mean = 6.0 “Would probably buy”). After tasting the beverage associated with labels (informed phase), consumers kept a positive evaluation. The t-test performed between the pair of means of both phases showed that there has not been a significant difference regarding the quality attributes (p > 0.05), special, attractive, nutritive, healthy and buying attitude (Label 1, p = 0.26; Label 2, p = 0.18; Label 3, p = 0.26) in all labels. Originality/value The authors evaluated how the influence of label and nutritional claims in regards to a new product, a beverage made from cashew nut, affects its acceptance, buying attitude and characteristics of quality. Until this moment, there are no studies that evaluate how external attributes affect the acceptance of this beverage totally unique in the Brazilian market.

Sign in / Sign up

Export Citation Format

Share Document