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1数字金融促进了突破式创新还是渐进式创新?显示文摘企业突破式创新是决定企业能否掌握核心技术、实现价值链提升的关键。基于双元创新理论,利用2011—2020年A股上市公司数据和北大数字普惠金融指数数据,分析数字金融究竟是促进了企业突破式创新还是渐进式创新。研究发现:数字金融既有利于企业渐进式创新,又有利于企业突破式创新,且对突破式创新的作用大于对渐进式创新的作用;异质性分析表明,这一影响在企业创新需求较大时,即在技术密集型和资本密集型企业以及市场竞争程度高的企业中更显著;机制检验发现,缓解企业融资约束是数字金融实现企业渐进式创新、突破式创新的重要渠道;进一步研究发现,突破式创新可以提升企业价值,而渐进式创新则会损害企业价值。研究结论不仅为评估数字金融对企业突破式创新、渐进式创新的影响提供了一定的经验证据,而且对引导企业掌握核心技术、实现企业价值链提升具有重要的政策启示。郑雨稀 杨蓉 Mohammad Heydari 2022云南财经大学学报2022,38,2:16
2Evaluation on Properties of CaO-BaO-B_2O_3-Al_2O_3-SiO_2 Glass-Ceramic Sealants for Intermediate Temperature Solid Oxide Fuel Cells显示文摘To develop suitable sealants for intermediate temperature solid oxide fuel cells (IT-SOFC), glasseceramics based on the CaO-BaO-B2O3-Al2O3-SiO2 system were studied. Coefficient of thermal expansion (CTE), glass transition temperature (Tg) and dilatometric softening point temperature (Td) of specimens were determined by means of dilatometer analysis and crystallization temperature was measured by differential thermal analysis (DTA). Also, crystallization behavior during prolonged heat-treatment and microstructure properties were studied by means of X-ray diffraction (XRD) and scanning electron microscopy (SEM), respectively. Electrical properties were measured at different temperatures, and the results showed a high resistance (>10 4Ω) at the SOFC operation temperature (600-800℃). Moreover, mechanical properties of heat-treated specimens (1, 10, 30, 50 h) were measured. Microstructure investigation revealed a well-adhered bonding between the sealant glasseceramic electrolyte and glass.Fatemeh Heydari Amir Maghsoudipour Zohreh Hamnabard Sajad Farhangdoust 2013Journal of Materials Science & Technology2013,29,1:10
3The reliability of the Australasian Triage Scale:a meta-analysis显示文摘BACKGROUND: Although the Australasian Triage Scale(ATS) has been developed two decades ago, its reliability has not been def ined; therefore, we present a meta-analyis of the reliability of the ATS in order to reveal to what extent the ATS is reliable.DATA SOURCES: Electronic databases were searched to March 2014. The included studies were those that reported samples size, reliability coefficients, and adequate description of the ATS reliability assessment. The guidelines for reporting reliability and agreement studies(GRRAS) were used. Two reviewers independently examined abstracts and extracted data. The effect size was obtained by the z-transformation of reliability coefficients. Data were pooled with random-effects models, and meta-regression was done based on the method of moment's estimator.RESULTS: Six studies were included in this study at last. Pooled coefficient for the ATS was substantial 0.428(95%CI 0.340–0.509). The rate of mis-triage was less than fifty percent. The agreement upon the adult version is higher than the pediatric version.CONCLUSION: The ATS has shown an acceptable level of overall reliability in the emergency department, but it needs more development to reach an almost perfect agreement.Mohsen Ebrahimi Abbas Heydari Reza Mazlom Amir Mirhaghi 2015World Journal of Emergency Medicine2015,6,2:10
4Time analysis of fatal traffic accidents in Fars Province of Iran显示文摘ObjectiveTo 分析在在 IranMethodsThis 学习的 Fars 省的道路交通事故(RTA ) 的时间因素在 Fars 省被进行,从 2009 年 11 月 22 日的伊朗到 2011 年 11 月 21 日。Victims’信息由年龄,性别,包含汽车的司机或旅客的死亡人数,摩托车和行人组成了,并且损害等等的地点。事故在关系被分析,点亮包括日出的状况今日的小时,一年的季节,日落,白天和 nighttime.ResultsA 3 642 死亡总计(78.3% 是男性,并且到女性的男性的比率关于 3.6:1 ) 关于他们的尸体记录被学习。发生在午夜到 15:59 的致命的事故有稳定的增加。涉及一个致命的交通事故的风险为比在另外的时间在 4:00 之间伤害到 7:59 的那些是更高的(OR  =  2.13, 95% CI 1.85-2.44 ) 。致命的 RTA 的最大的数字发生在夏天。死亡在春天和夏天期间由于 RTA 是在 20:00 读到 23:59 和午夜到 3:59 的更多,而在秋天和冬季的死亡高从 12:00 是更显著的到 15:59 .ConclusionThe RTA 的死亡率是在 Fars 的一个主要公共健康问题省。我们的结果显示时间是贡献道路交通死亡的一个重要因素。Seyed Taghi Heydari 2013Chinese Journal of Traumatology2013,16,2:9
5糖尿病患者血清胱抑素C和急性反应指标与视网膜病变严重程度相关性研究(英文)显示文摘目的:评估糖尿病视网膜病变(DR)严重程度与血清胱抑素C和急性时相反应指标的相关性,包括红细胞沉降率(ESR)和超敏C反应蛋白(hs-CRP)。方法:研究纳入了1mo内就诊的所有糖尿病视网膜病患者。患者均记录人口统计学数据。行眼科检查,同时检测糖化血红蛋白(Hb A1c)、ESR、hs-CRP和血清胱抑素C水平。结果:研究包括67例糖尿病患者,其中19例(28.3%)无视网膜病变患者,22例(32.8%)非增殖型视网膜病变患者和26例(38.8%)增殖型视网膜病变患者。三组间平均年龄、性别分布、平均糖尿病病程、高血压和血脂异常患病率、吸烟状况以及Hb A1c水平无明显差异。随着视网膜病变发展,平均血清胱抑素C水平显著提高,三组分别为1.1±0.48,1.22±0.38,1.71±0.92(P=0.007)。在多元回归分析中,仅血清胱抑素C与糖尿病视网膜病变严重程度有关(P=0.025)。结论:研究表明,在独立于急性时相反应指标,血清胱抑素C水平随DR加重升高。因此,该结论可作为初级医护人员区分高危患者的标志。Joobin Khadamy Gholamhossein Yaghoobi Abbas Hosseini Rad Mahnaz Najafi Saeed Reza Heydari Pardis Khademi 2018国际眼科杂志2018,18,3:8
6Risk factors of gastroesophageal reflux disease in Shiraz,southern Iran显示文摘AIM: To determine the prevalence and symptoms of gastroesophageal reflux disease (GERD) in a healthy general population in relation to demographic,lifestyle and health-seeking behaviors in Shiraz,southern Iran. METHODS: A total of 1978 subjects aged > 35 years who referred to Gastroenterohepatology Research Center and who completed a questionnaire consisting of 27 questions for GERD in relation to demographic,lifestyle and health-seeking behaviors were included in this study for a period of five months. The validity and reliability of the questionnaire were determined. RESULTS: The prevalence of GERD was 15.4%,which was higher in females (17.3%),in rural areas (19.8%),and in illiterate subjects (21.5%) and those with a mean age of 50.25 years. The prevalence was significantly lower in subjects having fried food (14.8%),and fruit and vegetables (14.6%). More symptoms were noticed in subjects consuming pickles (22.1%),taking aspirin (21%) and in subjects with psychological distresses (27.2%) and headaches (22%). The correlation was statistically significant between GERD and halitosis (18.3%),dyspepsia (30.6%),anxiety (19.5%),nightmares (23.9%) and restlessness (18.5%). Their health seeking behavior showed that there was a significant restriction of diet (20%),consumption of herbal medicine (19%),using over-the-counter drugs (29.9%) and consulting with physicians (24.8%). Presence of GERD symptoms was also significantly related to a previous family history of the disease (22.3%).CONCLUSION: GERD is more common in females,rural and illiterate subjects and correlated with consumption of pickles,occurrence of headache,psychological distress,dyspepsia,halitosis,anxiety,nightmare and restlessness,and a family history of GERD and aspirin intake,but the correlation was negative with consumption of fat and fiber intake.Mehdi Saberi-Firoozi Farnaz Khademolhosseini Maryam Yousefi Davood Mehrabani Najaf Zare Seyed Taghi Heydari 2007World Journal of Gastroenterology2007,13,41:7
7Fatal motorcycle accidents in Fars Province, Iran: a com- munity-based survey显示文摘ObjectiveTo 在 Fars 省识别摩托车事故的牺牲品的主要特征, Iran.MethodsThis 代表性的学习在从 2009 年 3 月在伊朗有所有 31 个省的第四张最大的人口到 2010 年 6 月的 Fars 省被进行。我们从所有 542 的 includeddata 由于机动车辆事故记录了死亡的盒子。数据从由人口统计、事故相关的信息组成的法庭的药登记被记录。人口统计的信息由名字,年龄,性别,致命的牺牲品(摩托车驱动程序对旅客) 的地位和 2 345 尸体从法庭的药档案记录的教育 level.ResultsOf 组成了,(23.1%) 542 作为机动车辆事故给了死亡的原因。这些牺牲品的吝啬的年龄是(31.4 ±16.5 ) 年,和男性到女比率是 28。头损害是在这些牺牲品的死亡的最普通的原因,并且总的来说,他们趋于有教育的底层。摩托车事故经常包含了更年轻的年龄组(15-35 年) ,并且与一顶头盔的弃权联系的头损伤是 death.ConclusionsHead 损害的最普通的原因在在我们学习了的省的牺牲品之中是经常的。这种状况可能与 victims’ 有关关于交通法律与他们的弱实施一起导致加速和这些法律的不顾的低社会经济的地位和很少教育。Seyed Taghi Heydari Najmeh Maharlouei Aft Foroutan Yaser Sarikhani Fariborz Ghaffarpasand Arya Hedjazi Mohammad Zarenezhad Ghasem Moafian Mohammad Reza Aghabeigi Payam Peymani Seyed Mehdi Ahmadi Maryam Dehghankhalili Hassan Joulaei Kamran B. Lankarani 2012Chinese Journal of Traumatology2012,15,4:6
8Complementary and alternative medicine use in Iranian patients with diabetes mellitus显示文摘OBJECTIVE: There is increasing interest in complementary and alternative medicine generally, and especially by those affected by chronic diseases, such as diabetes mellitus. We aimed to determine the prevalence and pattern of complementary and alternative medicine use among patients suffering from diabetes mellitus in Shiraz, southern Iran. Another objective was to explore associated factors for use of complementary and alternative medicine among patients with diabetes mellitus.METHODS: A 19-item semi-structured questionnaire(open- and close-ended) was administered to 239 patients with diabetes mellitus in this cross-sectional study. It was carried out in two outpatient diabetes clinics affiliated with the Shiraz University of Medical Sciences, Shiraz, Iran.RESULTS: One hundred and eighty patients(75.3%) used at least one type of complementary and alternative medicine in the last year prior to the interview. Patients with diabetes mellitus who were living in a large family(≥ 5 members), not taking insulin, and believed that complementary and alternative medicine have synergistic effects with conventional medicine, were independently and significantly(P values: 0.02, 0.04, and 0.01, respectively) more likely to use complementary and alternative medicine. Most of the users(97.7%) reported use of herbal preparations, and 89.4% of users did not change their medication, neither in medication schedule nor its dosage.CONCLUSION: The use of complementary and alternative medicine, especially herbal remedies, is popular among diabetes patients in Shiraz, Iran. This use is associated with patients' family size, type of conventional medications and their view about concomitant use of complementary and conventional medicine.Mohammad Hashem Hashempur Mojtaba Heydari Seyed Hamdollah Mosavat Seyyed Taghi Heydari Mesbah Shams 2015Journal of Integrative Medicine2015,13,5:5
9Epidemiological characteristics of fatal pedestrian ac- cidents in Fars Province of Iran: a community-based survey显示文摘ObjectiveTo 决定在 Iran.MethodsThis 代表性的学习的 Fars 省的致命的步行事故的流行病学的特征从 2009 年 3 月在一个 29 月的时期期间在伊朗的 Fars 省被进行到 2011 年 7 月。数据从 Fars 法庭的药登记。在 4 923 记录道路交通事故死亡, 971 死亡由于步行事故。人口统计、事故相关的信息被社会科学统计套装软体版本 11.5 分析。不到 0.05 被认为死者的 significant.ResultsThe 平均数年龄的 P 价值是(47.2 ±26.2 ) 年,从 6 个月到 103 岁。男性们说明了 69.8% 所有死亡。致命的事故在 9 月是很普通的;56.1% 致命的损害发生在 intracity 道路上并且 33.1% 在 extracity 道路上。致命的头损害在 60.54% 盒子中是在场的。损害地点的评估和死亡的原因发现他们显著地与年龄被联系,在损害和死亡之间的间隔。而且,道路的类型在 mortality.ConclusionAlthough 起了一个重要作用损伤病人的临床的管理在最近的十年在我们的国家被改进了,减少损害的负担在损伤系统组织之中需要协作。Payam Peymani Seyed Taghi Heydari Amin Hoseinzadeh Yaser Safikhani Arya Hedjazi Mohammad Zarenezhad Ghasem Moafian Mohammad Reza Aghabeigi Najmeh Maharlouei All Foroutan Seyed Mehdi Ahmadi FariborzGhaffarpasand Hassan Joulaei Kamran B Lankarani 2012Chinese Journal of Traumatology2012,15,5:5
10Interaction between climate and management on beta diversity components of vegetation in relation to soil properties in arid and semi-arid oak forests, Iran显示文摘This study aimed to investigate the interaction between regions with different climatic conditions(arid vs. semi-arid) and management(protected vs. unprotected) on the turnover and nestedness of vegetation in relation to physical, chemical and biological properties of soils in the Ilam Province of Iran. In each of the two regions, we sampled 8 sites(4 managed and 4 unmanaged sites) within each of which we established 4 circular plots(1000 m^2) that were used to investigate woody species, while two micro-plots(1 m×1 m) were established in each 1000-m^2 plot to analyze herbaceous species. In each sample unit, we also extracted three soil samples(0–20 cm depth) for measuring soil properties. The results indicated that the interaction between region and conservational management significantly affected the percent of canopy cover of Persian oak(Quercus brantii Linddl), soil respiration, substrate-induced respiration, as well as beta and gamma diversities and turnover of plant species. The percent of oak canopy cover was positively correlated with soil silt, electrical conductivity, available potassium, and alpha diversity, whereas it was negatively correlated with plant turnover. In addition, plant turnover was positively related to available phosphorus, while nestedness of species was positively related to organic carbon and total nitrogen. According to these results, we concluded that physical, chemical, and biological characteristics of limited ecological niche generally influenced plant diversity. Also, this study demonstrated the major contribution of the beta diversity on gamma diversity, especially in semi-arid region, because of the higher heterogeneity of vegetation in this area.Heydari MEHDI Aazami FATEMEH Faramarzi MARZBAN Omidipour REZA Bazgir MASOUD Pothier DAVID Prévosto BERNARD 2019Journal of Arid Land2019,11,1:3
11Facile synthesis of nanoporous CuS nanospheres for high-performance supercapacitor electrodes显示文摘In recent years, development of high-performance supercapacitor electrode materials has stimulated a great deal of scientific research. The electrochemical performance of a supercapacitor strongly depends on its material structures. Herein, we report a simple strategy for high-performance supercapacitors by building pseudocapacitive CuS nanospheres with nanoporous structures, nanosized walls(<10 nm) and relatively large specific surface area of 65 m^2/g. This electrode demonstrates excellent electrochemical performance including a maximum specific capacitance of 814 F/g at 1 A/g, significant rate capability of 42% capacitance retention at an ultrafast rate of 50 A/g, and outstanding long-term cycling stability at various current densities. The remarkable electrochemical performance of as-prepared nanoporous CuS nanospheres electrode has been attributed to its unique structures that plays a key role in providing short ion and electron diffusion pathways, facilitated ion transport and more active sites for electrochemical reactions. This work sheds a new light on the metal sulfides design philosophy, and demonstrates that nanoporous CuS nanospheres electrode is a promising candidate for application in high-performance supercapacitors.Hamid Heydari Seyyed Ebrahim Moosavifard Mohammad Shahraki Saeed Elyasi 2017Journal of Energy Chemistry2017,26,4:3
12Educational level and age as contributing factors to road traffic accidents显示文摘在 Fars 省的道路交通事故(RTA ) 上的 ObjectiveThis 研究分析数据,其道路在在伊朗的高度危险的之中。它调查涉及 RTA 以便发现能阻止或减少的模式的教育水平和年龄 accidents.MethodsThis 研究使用了数据可视化技术发现模式隐藏。数据在 Fars 省包括了与 RTA 有关的死亡率并且从从 2010 年 3 月 21 日盖住 1 年的一个时期到 2011 年 3 月 21 日的 Fars 法庭的药登记被获得。所有数据用社会科学统计套装软体 11.5 被分析。结果作为象频率(百分比) 那样的描述的索引被报导。Chisquare 测试有关教育水平和年龄被用于数据。不到 0.05 被认为 significant.ResultsIn 的 P 价值提及的时期, 1 831 个人被打死,从谁 un/lowly 教育了人(69.6%) 说明了最高的死亡率。在教育水平和死亡率之间的重要关系被发现(X 2=275.98, P < 0.0001 ) 。另外三是在年龄和死亡率之间的一个重要协会(X 2=371.20, P < 0.0001 ) 。年轻人(在 20 和 29 年之间的年龄) 与另外的年龄 groups.ConclusionThe 相比贡献更高的 RTA 死亡率教育水平和年龄显著地被相关到死亡率。青春和 un/lowly 教育了人承受更多的致命的 RTA。Ashkan Sami Ghasem Moafian Arman Najafi Mohammad Reza Aghabeig Navid Yamin Seyed Taghi Heydari Kamran B Lankarani 2013Chinese Journal of Traumatology2013,16,5:2
13An epidemiologic survey of road traffic accidents in Iran: analysis of driver-related factors显示文摘ObjectiveRoad 交通事故(RTA ) 和它的相关损害在伊朗贡献疾病的负担的重要部分。这份报纸在 countryMethodsThis 探索在司机相关的因素和 RTA 之间的协会代表性的学习从 2010 年 3 月 20 日关于 RTA 在伊朗和所有数据被进行到 2010 年 6 月 10 日从交通警察部门被获得。我们包括了 538 588 RTA 记录,它被分类为主要 confounders 控制:事故类型,事故的最后的原因,事故的时间和司机相关的因素。司机相关的因素包括了性,教育水平,许可证类型,损害的类型,在事故之间的持续时间并且得到驾驶执照和 538 588 位司机的 driver’s 错误 type.ResultsA 总数(91.83% 男性,几乎 13:1 的性比率) 涉及 RTA。在他们之中 423 (78.71%) 932 是未受损伤的;224 (41.74%) 818 有证书度。等级 2 驾驶执照代表了所有驾驶执照的最高的比例(290 811, 54.00%) 。事故的最大的数字发生在 12:00-13:59 (75 024, 13.93%) 。涉及 RTA 的司机的比例在在 10   以后得到一个驾驶执照到 3.13% 的第一年里从 15.90% 减少了; years’驾驶经验。规定的疏忽是交通碰撞的最普通的原因(345 589, 64.17%) 。到前面的优先级和疏忽的违反是死亡的最经常的最后的原因(138 175, 25.66% 和 129 352, 24.02% ,分别地) 。我们发现了在事故和性的类型之间的重要协会,教育,许可证类型,事故的时间,事故的最后的原因,在事故之间的 driver’s 错误以及持续时间并且得到驾驶执照(所有 P  ;<   ; 0.001 ) .ConclusionOur 结果将改进交通法律实施措施,它将改变司机的不恰当的行为并且保护最不富有经验的道路用户。Ghasem Moafian Mohammad Reza Aghabeigi Seyed Taghi Heydari Amin Hoseinzadeh Kamran Bagheri Lankarani Yaser Sarikhani 2013Chinese Journal of Traumatology2013,16,3:2
14Extension of VIKOR method for decision making problem with interval numbers显示文摘Mohammad Kazem Sayadi Majeed Heydari Kamran Shahanaghi 2008Applied Mathematical Modelling2008,,5:2
15翼状胬肉患者血清总抗氧化能力的临床研究(英文)显示文摘目的:评估翼状胬肉患者血清总抗氧化能力与对照组的比较结果。方法:病例对照研究。包括2016年Vali-Asr教学医院眼科患有翼状胬肉的所有患者。对照组来源于Vali-Asr教学医院眼科(非翼状胬肉患者),两组年龄、性别和居住地无统计学差异。通过任意抽样选取66例受试者[31(47%)例患者,35(53%)例对照组]。用铁还原抗氧化法(FRAP)检测所有患者静脉血液样本。FRAP是一种10min快速检测手段,通过检测样本使铁(Fe3+)转化为亚铁(Fe2+)的能力以测定样本的抗氧化能力。通过SPSS 21软件收集数据,使用chi-square和Mann-Whitney进行分析(α=0.05)。结果:研究组患者平均抗氧化能力为842.55±161.46μmol/L,对照组为856.77±209.41μmol/L(P=0.8)。基于性别比较正常个体与翼状胬肉患者平均血清抗氧化能力,结果显示对照组男性平均抗氧化能力为894.05±176.82μmol/L,女性为780.01±118.33μmol/L,差异具有统计学意义(P=0.008)。病例组与对照组的同性别间对比结果无显著性差异。结论:研究结果显示,翼状胬肉患者血清抗氧化能力的总水平低于对照组的平均值,但未观察到显著差异。本研究结果与氧化应激在翼状胬肉发病机制中的影响基本一致。Heydari Behrooz Yaghoobi Gholamhossein Zarban Asghar Hosseini Rad Abbas Feizinohammadi Akram 2018国际眼科杂志2018,18,1:2
16Impact of scientific and technological innovation policies on innovation efficiency of high-technology industrial parks-A dual analysis with linear regression and QCA显示文摘Scientific and technological innovation policies play a critical role in the innovative development of high-technology industrial parks.However,it remains unclear how scientific and technological innovation policies impact the innovation efficiency of hightechnology industrial parks and what the impact pathways are.An in-depth investigation of this topic can give an insight into the inherent relation between the scientific and technological innovation policies and technological innovation.By conducting a theoretical analysis,this study empirically analyzed the impact of scientific and technological innovation policies on the innovation efficiency of high-technology industrial parks.The main research methods applied in this study were linear regression and qualitative comparative analysis(QCA).The results showed that the policy targets drove innovation efficiency in a relatively minor way.Among all policy tools,the demand-based policy tools had the most significant influence on innovation efficiency.The supply-based and environment-based policy tools had notable positive impacts during the lag periods of policies.The policy mix pathways for scientific and technological innovation policies that impact innovation efficiency come in four forms,namely,the targets-directed,demand-driven,supplydominated environment optimization,and environment-dominated comprehensive pathways.Therefore,this study put forward proposals on classifying and refining the scientific and technological innovation policies and optimizing the policy mix-driven models.Jinglei Wang Xiao Ma Yixuan Zhao Jing Zhao Mohammad Heydari 2022International Journal of Innovation Studies2022,6,3:2
17Combinatorial optimization of group key management显示文摘M Eltoweissy M H Heydari L Morales 2004Jotlmal of Network and Systems Management: Special Issue on Network Security2004,12,1:1
18Combinatorial optimization of key management in group eommunieations显示文摘Eltoweisy M Heydari H Morales L 2004Journal ol Network and Systems Management2004,12,1:1
19Age-related alterations in the activation of heat shock transcription factor 1in rat hepatocytes显示文摘Heydari AR You S Takahashi R 2000Exp Cell Res2000,256,1:1
20Polyethylenimine-impregnated mesoporous silica:effect of amine loading and surface alkyl chains on CO2adsorption显示文摘Heydari Gorji A Belmabkhout Y Sayari A 2011Langmuir2011,27,12:1
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