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| 1 | 云南省生态资产与生态系统生产总值核算体系研究显示文摘生态系统作为重要的生态资产,为人类提供生态产品和服务,是人类生存和社会经济可持续发展的基础;生态系统生产总值(GEP)是生态资产提供的生态产品与服务价值总和,是生态资产的重要组成部分,也是生态资产对人类福祉的主要贡献。论文以云南省为例,分析了生态资产和GEP的内涵、关联与核算体系,评价了云南省2010年生态资产状况及其为受益者提供生态产品和服务价值的总和。评价结果显示:云南省2010年生态资产状况总体良好,林地、灌丛和草地生态系统的质量水平属于良等级;农田生态系统的质量水平差;生物多样性质量水平优。云南省2010年GEP总量为29 869.51亿元,其中,直接产品价值为4 132.69亿元,间接服务价值为25 736.81亿元。2010年GEP是当年该省国内生产总值(GDP)的4.13倍。研究结果表明,生态资产与GEP的核算,可以定量反映生态系统状况及其对区域社会经济发展的支撑作用,并为评估区域生态系统保护成效及建立生态系统可持续管理与绩效考核机制提供科学依据。 | 白杨 李晖 王晓媛 Juha M.Alatalo 江波 王敏 刘文俊 | 2017 | 自然资源学报2017，32，7： | 69 |
| 2 | 生态系统服务供给与需求的理论与管理方法显示文摘生态系统服务是当前可持续科学研究的热点之一。随着环境保护与管理需求的不断增加,政策制定者希望将生态系统服务信息更多地融入管理实践中。由于理论的不确定性和研究方法的局限性,如何准确地评价生态系统服务、如何考虑不同利益相关者的需求,提取重要的生态系统服务信息给决策者参考,仍然是当前该领域研究的难点。基于生态系统服务的产生、传递和消耗过程,区分生态系统服务的潜在供给、实际供给和人类需求;引入生态系统服务供需比和供给率两个指标,为区域间自然资源资产的比较提供一种方法;以白洋淀流域为案例,采用生态系统服务矩阵法,结合GIS空间模拟技术,揭示生态系统服务供给与需求的空间特征。白洋淀流域2010年生态系统服务的供给率和供需比分别是:0.4966和0.1131,说明流域生态系统服务供给状态较好,且处于盈余状态。对流域内供给率较高且供给处于盈余的区域,应作为生态保护与补偿的主要区域;对生态系统服务需求较大的区域应进行必要的生态建设与修复。研究结果为区域生态环境管理和政策制定提供了实际的科学依据。 | 白杨 王敏 李晖 黄沈发 Juha M.Alatalo | 2017 | 生态学报2017，37，17： | 58 |
| 3 | Systemic inflammation in colorectal cancer: Underlying factors,effects, and prognostic significance显示文摘Systemic inflammation is a marker of poor prognosis preoperatively present in around 20%-40%of colorectal cancer patients.The hallmarks of systemic inflammation include an increased production of proinflammatory cytokines and acute phase proteins that enter the circulation.While the low-level systemic inflammation is often clinically silent,its consequences are many and may ultimately lead to chronic cancer-associated wasting,cachexia.In this review,we discuss the pathogenesis of cancer-related systemic inflammation,explore the role of systemic inflammation in promoting cancer growth,escaping antitumor defense,and shifting metabolic pathways,and how these changes are related to less favorable outcome. | Anne E Tuomisto Markus J Makinen Juha P Vayrynen | 2019 | World Journal of Gastroenterology2019，25，31： | 27 |
| 4 | Expression of von Hippel-Lindau tumor suppressor and tumor-associated carbonic anhydrases IX and XII in normal and neoplastic colorectal mucosa显示文摘AIM: To analyze possible relationships between CA ⅠⅩ/CA Ⅻ and pVHL expression in normal and neoplastic colorectal mucosa.METHODS: Immunohistochemical staining of 42 tissue specimens obtained from 17 cancer patients was performed to evaluate the distribution and semi-quantitatively assess the levels of CA ⅠⅩ, CA Ⅻ and pVHL. VHL mRNAs from 14 fresh-frozen tumors was amplified by RT-PCR and subjected to sequencing. CA9 and CA12 mRNA levels were analyzed by semi-quantitative RT-PCR in comparison with VEGFas an indicator of hypoxia that uncouples the pVHL control.RESULTS: Tumor tissues were associated with a borderline increase of CA ⅠⅩ staining signal and slight but significant decrease of CA Ⅻ immunoreactivity, whereas no association was found for pVHL. Sequence analysis of RT-PCR-amplified VHL mRNAs revealed no deletions/mutations, suggesting that they were VHL-competent. We did not observe any correlation between pVHL and CA ⅠⅩ/CA Ⅻ proteins as well as between VEGF and CA9 mRNAs, but the tumor-associated changes in mRNA levels of VEGF and CA12 showed a significant inverse relationship.CONCLUSION: Our results indicate that CA9 and CA12 are regulated by different intratumoral factors and that lack of apparent relationship between the levels of CA ⅠⅩ/CA Ⅻ and pVHL cannot be fully assigned to uncoupling of negative regulatory function of pVHL by tumor hypoxia signified by induced VEGF transcription. The interplay between the functional pVHL and CA ⅠⅩ/CA Ⅻ in colorectal tumors seems rather complex and is not evident merely at the expression levels. | Antti J. Kivela Seppo Parkkila Juha Saarnio Tuomo J. Karttunen Jyrki Kivela Anna-Kaisa Parkkila Maria Bartosova Vojtech Mucha Michal Novak Abdul Waheed William S. Sly Hannu Rajaniemi Silvia Pastorekova Jaromir Pastorek | 2005 | World Journal of Gastroenterology2005，11，17： | 10 |
| 5 | 青藏高原高寒草地地上生物量对气候变化的响应(英文)显示文摘Aboveground biomass in grasslands of the Qinghai-Tibet Plateau has displayed an overall increasing trend during 2003–2016, which is profoundly influenced by climate change. However, the responses of different biomes show large discrepancies, in both size and magnitude. By applying partial least squares regression, we calculated the correlation between peak aboveground biomass and mean monthly temperature and monthly total precipitation in the preceding 12 months for three different grassland types(alpine steppe, alpine meadow, and temperate steppe) on the central and eastern Qinghai-Tibet Plateau. The results showed that mean temperature in most preceding months was positively correlated with peak aboveground biomass of alpine meadow and alpine steppe, while mean temperature in the preceding October and February to June was significantly negatively correlated with peak aboveground biomass of temperate steppe. Precipitation in all months had a promoting effect on biomass of alpine meadow, but its correlations with biomass of alpine steppe and temperate steppe were inconsistent. It is worth noting that, in a warmer, wetter climate, peak aboveground biomass of alpine meadow would increase more than that of alpine steppe, while that of temperate steppe would decrease significantly, providing support for the hypothesis of conservative growth strategies by vegetation in stressed ecosystems. | 王力 于海英 张强 徐韵佳 陶泽兴 ALATALO Juha 戴君虎 | 2018 | Journal of Geographical Sciences2018，28，12： | 9 |
| 6 | 制浆造纸行业节能型真空系统——Ecopump节能透平机显示文摘通过与制浆造纸行业现有的液环泵和单/多级透平风机两种真空系统进行比较,介绍了芬兰Ecopump节能透平机真空系统技术及其优势所在。Ecopump节能透平机可为纸机真空系统节能30%-70%,同时具有投资回报快、安装维护快且简单等特点。 | Juha Karvinen 杨凤辉 | 2014 | 中华纸业2014，35，12： | 7 |
| 7 | 萌出诱导矫治器治疗儿童上颌中切牙间隙的临床初探及三维数字化技术分析显示文摘目的 探讨萌出诱导矫治器治疗儿童上颌中切牙间隙的效果,并借助三维数字化技术进行分析.方法 对13例存在上颌中切牙间隙的病例应用萌出诱导矫治器进行矫治,应用SmartOptics Activity 880牙颌模型扫描仪,获取患儿治疗前后三维牙颌数字模型,应用三维逆向工程软件测量上、下中切牙在三维方向上的移动变化.对矫治前后覆(牙合)覆盖的测量值,应用配对t检验进行比较,以双侧P<0.05为差异有统计学意义.结果 11例病例上中切牙间隙完全关闭,左右上中切牙平均近中位移量分别为1.17±0.20 mm和1.23±0.22 mm,平均覆(牙合)由治疗前的4.97±1.49 mm减小为治疗后的2.61±0.79 mm(t=8.083,P<0.05),平均覆盖由治疗前的4.95±1.86 mm减小为治疗后的2.66±0.58 mm(t=5.723,P<0.05),差异均有显著性.结论 萌出诱导矫治器可以治疗儿童上颌中切牙间隙,在关闭牙间隙的同时有改善覆(牙合)覆盖的作用. | 王郁 赵一姣 李成皓 王宇光 王勇 Juha Eerik Varrela 岳江 葛立宏 | 2015 | 中华口腔正畸学杂志2015，22，2： | 7 |
| 8 | Overexpression of HSP27 and HSP70 is associated with decreased survival among patients with esophageal adenocarcinoma显示文摘BACKGROUND Overexpression of heat shock proteins(HSPs) is associated with several malignancies and contributes to the development, progression, and metastasis of cancer, in addition to the inhibition of cellular death. In recent years, there has been active research into using HSP inhibitors in several malignancies. Due to the poor prognosis of esophageal adenocarcinoma(EAC), it would be valuable to find new biomarkers for the development of cancer treatments.AIM To evaluate the expressions of HSP27 and HSP70 and their effect on survival in EAC.METHODS Immunohistochemical analyses and evaluations of HSP27 and HSP70 expression were performed on all available samples from 93 patients diagnosed with EACbetween 1990 and 2007 at two university hospitals. Fifteen cases with Barrett's metaplasia and 5 control cases from the same patient population were included in the analysis. HSP expression was quantitatively assessed and classified as high or low. Kaplan-Meier analyses and Cox regression models adjusting for age and sex as well as tumor site, stage, and grade were used to evaluate the effect on survival.RESULTS Tumor stage and surgical treatment were the main prognostic factors. High HSP27 expression in cancer cases was a strong negative predictive factor, with a mean survival of 23 mo compared to the 49 mo in cases with a low expression(P= 0.018). The results were similar for HSP70, with a poorer survival of 17 mo in cases with high HSP70 expression, in contrast to 40 mo(P = 0.006) in cases with a low expression. A Cox regression survival analysis was performed, adjusting for possible confounding factors, and higher HSP27 and HSP70 expressions remained an independent negative prognostic factor. The HSPs' correlation with survival was not affected by cancer treatments. When the analysis was adjusted for all factors, the odds ratios for HSP27 and HSP70 were 3.3(CI: 1.6–6.6, P =0.001) and 2.2(CI: 1.2–3.9, P = 0.02), respectively.CONCLUSION HSP27 and HSP70 overexpression is associated with poor survival in EAC, which is, to the best of our knowledge, reported for the first time. | Henna K S?derstr?m Juha T Kauppi Niku Oksala Timo Paavonen Leena Krogerus Jari R?s?nen Tuomo Rantanen | 2019 | World Journal of Clinical Cases2019，7，3： | 7 |
| 9 | MODIS-based Daily Lake Ice Extent and Coverage dataset for Tibetan Plateau显示文摘The Tibetan Plateau houses numerous lakes,the phenology and duration of lake ice in this region are sensitive to regional and global climate change,and as such are used as key indicators in climate change research,particularly in environment change comparison studies for the Earth three poles.However,due to its harsh natural environment and sparse population,there is a lack of conventional in situ measurement on lake ice phenology.The Moderate Resolution Imaging Spectroradiometer(MODIS)Normalized Difference Snow Index(NDSI)data,which can be traced back 20 years with a 500 m spatial resolution,were used to monitor lake ice for filling the observation gaps.Daily lake ice extent and coverage under clear-sky conditions was examined by employing the conventional SNOWMAP algorithm,and those under cloud cover conditions were re-determined using the temporal and spatial continuity of lake surface conditions through a series of steps.Through time series analysis of every single lake with size greater than 3 km2 in size,308 lakes within the Tibetan Plateau were identified as the effective records of lake ice extent and coverage to form the Daily Lake Ice Extent and Coverage dataset,including 216 lakes that can be further retrieved with four determinable lake ice parameters:Freeze-up Start(FUS),Freeze-up End(FUE),Break-up Start(BUS),and Break-up End(BUE),and 92 lakes with two parameters,FUS and BUE.Six lakes of different sizes and locations were selected for verification against the published datasets by passive microwave remote sensing.The lake ice phenology information obtained in this paper was highly consistent with that from passive microwave data at an average correlation coefficient of 0.91 and an RMSE value varying from 0.07 to 0.13.The present dataset is more effective at detecting lake ice parameters for smaller lakes than the coarse resolution passive microwave remote sensing observations.The published data are available in http://gffzz324c53c67c144612soffp9kpvfn956bfp.ffgz.tsg.suse.edu.cn/repository/uuid:fdfd8c76-6b7c-4bbf-aec8-98ab199d9093 and http://gffzzc14d9fd2be724b39hoffp9kpvfn956bfp.ffgz.tsg.suse.edu.cn/dataSet/handle/744. | Yubao Qiu Pengfei Xie Matti Leppäranta Xingxing Wang Juha Lemmetyinen Hui Lin Lijuan Shi | 2019 | Big Earth Data2019，3，2： | 7 |
| 10 | An assessment of arctic sea ice concentration retrieval based on “HY-2” scanning radiometer data using field observations during CHINARE-2012 and other satellite instruments显示文摘A retrieval algorithm of arctic sea ice concentration(SIC) based on the brightness temperature data of 'HY-2' scanning microwave radiometer has been constructed. The tie points of the brightness temperature were selected based on the statistical analysis of a polarization gradient ratio and a spectral gradient ratio over open water(OW), first-year ice(FYI), and multiyear ice(MYI) in arctic. The thresholds from two weather filters were used to reduce atmospheric effects over the open ocean. SIC retrievals from the 'HY-2' radiometer data for idealized OW, FYI, and MYI agreed well with theoretical values. The 2012 annual SIC was calculated and compared with two reference operational products from the National Snow and Ice Data Center(NSIDC) and the University of Bremen. The total ice-covered area yielded by the 'HY-2' SIC was consistent with the results from the reference products. The assessment of SIC with the aerial photography from the fifth Chinese national arctic research expedition(CHINARE) and six synthetic aperture radar(SAR) images from the National Ice Service was carried out. The 'HY-2' SIC product was 16% higher than the values derived from the aerial photography in the central arctic. The root-mean-square(RMS) values of SIC between 'HY-2' and SAR were comparable with those between the reference products and SAR, varying from 8.57% to 12.34%. The 'HY-2' SIC is a promising product that can be used for operational services. | SHI Lijiang LU Peng CHENG Bin KARVONEN Juha WANG Qimao LI Zhijun HAN Hongwei | 2015 | Acta Oceanologica Sinica2015，34，3： | 6 |
| 11 | 基底动脉末段动脉瘤术中基底动脉的临时阻断显示文摘目的 探讨基底动脉末段动脉瘤显微外科术中采用基底动脉临时阻断(TBAO)的可行性。方法 回顾性分析892例基底动脉末段(基底动脉分叉部和基底动脉—小脑上动脉)非巨大动脉瘤显微外科术中采用TBAO与非TBAO的疗效并进行比较。结果 单次阻断不超过5min比较安全,超时或重复阻断则病残和死亡率增加;TBAO应慎重地用于术前不良分级、老年和多发性动脉瘤的患者,阻断的同期使用低血压(平均动脉压<70mmHg)应视为禁忌。结论 基底动脉动脉瘤早期外科治疗中采用TBAO较非TBAO疗效好。 | 胡深 Juha A.Hernesniemi | 2005 | 中华神经外科疾病研究杂志2005，4，2： | 6 |
| 12 | Estimation of drag forces caused by natural woody vegetation of different scales显示文摘To reliably estimate water levels and velocities in vegetated rivers and floodplains,flow resistance models based on physical plant properties are advantageous.The purpose of this study is(1)to assess the suitable parameterization of woody riparian vegetation in estimating the drag forces,(2)to address the effect of plant scale on the drag estimates and reconfiguration,and(3)to evaluate the applicability of three recently developed flow resistance models.Experiments on four tree species in a towing tank together with detailed characterization of tree properties were carried out to establish a novel dataset.Despite the variability in the tree height(0.9 m-3.4 m),the stem,leaf and total areas proved to be suitable characteristic dimensions for estimating the flow resistance at different scales.Evaluations with independent data revealed that the tested models produced reasonable results.The performance of the models was controlled by the parameter values used rather than the model structure or the plant scale. | JALONEN Johanna JRVEL Juha | 2014 | Journal of Hydrodynamics2014，26，4： | 6 |
| 13 | 高光谱激光雷达:三维生物物理化学生态测量学显示文摘生态测量学为生态学、地理学、林学、野生生物学等提供基础的技术支撑,开发适应上述学科发展的新型生态测量技术日渐重要,尤其随着目前生物地球化学的快速推进,开发三维生物物理化学生态测量技术成为当前的研究热点,然而当前的主流遥感测量技术仍无法做到高效准确。高光谱激光雷达技术的发展为解决该问题提供了可能,这也通过基于连续测量的3种单木高光谱激光雷达数据实现反演光合有效辐射、树冠叶绿素含量与氮含量的三维分布及其昼夜变化趋势得到验证。实验结果预示随着高光谱激光雷达的成熟,三维生物物理化学生态测量学将得以建立,相应的三维生物物理化学生态测量技术将进一步推动地理学、生态学、生物地球化学乃至地球系统科学的发展。 | 林沂 Eetu PUTTONEN Juha HYYPPA | 2017 | 遥感信息2017，32，1： | 6 |
| 14 | 萌出诱导矫治器治疗儿童个别前牙反的三维数字化分析显示文摘目的:探讨萌出诱导矫治器治疗混合牙列期儿童个别前牙反的临床效果。方法:选择10例存在个别前牙反的混合牙列期患儿,共计12颗前牙,用藻酸盐采取上、下颌印模并灌制硬石膏模型,送做萌出诱导矫治器,应用该矫治器进行治疗。通过Smart Optics Activity 880牙颌模型扫描仪,获取患儿治疗前、后的三维牙颌数字模型,应用逆向工程软件Geomagic Studio 2012构建三维重叠模型,利用Imageware 13.2软件测量反的上、下切牙在三维方向上的移动变化,对矫治前、后的覆、覆盖进行测量。应用铜丝测量法直接测量上、下颌牙弓弧长,相应的牙冠宽度(未萌出的恒牙按照X线片法预测牙冠宽度)减去牙弓弧长计算上、下颌牙弓的拥挤程度。使用SPSS17.0软件对同一患儿的术前、术后测量值进行统计学分析,首先对测量指标的术后改变量进行正态性检验,发现符合正态分布,然后采用配对样本t检验,双侧检验,显著性水平为0.05。结果:疗程为(5.6±2.7)个月,矫治过程中,上、下切牙在三维位移上均主要表现为唇倾(P<0.001、P=0.025)。经过萌出诱导矫治器的治疗,覆减少了(1.01±0.9)mm(t=-3.531,P=0.006),差异具有统计学意义,而术前、术后覆盖的差异不具有统计学意义(t=0.771,P=0.460)。上颌拥挤度减少了(1.9±0.99)mm(t=-6.042,P<0.001),下颌拥挤度减少了(1.9±0.74)mm(t=-8.143,P<0.001),差异均具有统计学意义。结论:萌出诱导矫治器可以治疗混合牙列期个别前牙反,同时有建立正常覆、覆盖,排齐牙齿的作用。 | 王旭 章晶晶 原福松 王郁 李成皓 Juha Eerik Varrela 岳江 葛立宏 | 2018 | 北京大学学报(医学版)2018，50，3： | 6 |
| 15 | Natural orifice transluminal endoscopic surgeryvs laparoscopic ovariectomy:Complications and inflammatory response显示文摘AIM:To compare natural orifice transluminal endoscopic surgery (NOTES) vs standard laparoscopic ovariectomy in mini pigs with respect to technical aspects,complications and parameters of systemic inflammatory response.METHODS:This was a randomized,experimental,survival study.Ten female mini pigs underwent NOTES transgastric ovariectomy (NOTES group) and ten female mini pigs underwent laparoscopic ovariectomy (LAP group).A 'percutaneous endoscopic gastrostomy' approach with guidewire and sphincterotome was used for gastrotomy creation.The ovary was resected using standard biopsy forceps and a snare.The access site was closed using a 'KING' closure with a single endoloop and several clips.In the laparoscopic group,a three-port laparoscopy and an ovariectomy were performed with the use of standard laparoscopic devices.C-reactive protein (CRP),white blood count and interleukin (IL)-6 plasma levels were used as indicators of systemic inflammatory response.All animals were euthanized 28 d after surgery.RESULTS:All animals survived without complications.The mean procedure time was 41.3 min ± 17.6 min (NOTES group) and 25.7 min ± 5.25 min (LAP group,P < 0.02).Postmortem examinations demonstrated that 50% and 70% of animals were free of any complications in the NOTES and LAP groups,respectively.The remaining animals developed minor complications (adhesions) in a comparable frequency between the two groups.In the NOTES group,one animal developed a small intramural gastric abscess close to the gastrotomy site.A minor serous exudate that was present in 50% and 40% of the animals in the NOTES and laparoscopy groups,respectively,was not considered a complication.In both groups CRP levels increased significantly on the 2nd and 7th postoperative days (POD) and returned to normal after 28 d.On POD 2,an increase of CRP level was significantly higher in the NOTES group compared to the LAP group.Values of IL-6 did not differ from baseline values in either of the groups postoperatively.Interestingly,the platelet count decreased significantly on POD 2,but returned close to baseline values on POD 7 and PODs 28-30.CONCLUSION:Both NOTES and laparoscopic ovariectomies had a similar frequency of minor complications.However,the NOTES technique produced an increased systemic inflammatory response on POD 2. | Jan Martínek Ondej Ryska Tereza Filípková Radek Dolezel Stefan Juhas Jan Motlík Monika Holubová Vladimír Nosek Barbora Rotnáglová Miroslav Zavoral Miroslav Ryska | 2012 | World Journal of Gastroenterology2012，18，27： | 4 |
| 16 | Inhibition and enhancement of neural regeneration by chondroitin sulfate proteoglycans显示文摘The current dogma in neural regeneration research implies that chondroitin sulfate proteoglycans(CSPGs) inhibit plasticity and regeneration in the adult central nervous system(CNS). We argue that the role of the CSPGs can be reversed from inhibition to activation by developmentally expressed CSPG-binding factors. Heparin-binding growth-associated molecule(HB-GAM; also designated as pleiotrophin) has been studied as a candidate molecule that might modulate the role of CSPG matrices in plasticity and regeneration. Studies in vitro show that in the presence of soluble HB-GAM chondroitin sulfate(CS) chains of CSPGs display an enhancing effect on neurite outgrowth. Based on the in vitro studies, we suggest a model according to which the HB-GAM/CS complex binds to the neuron surface receptor glypican-2, which induces neurite growth. Furthermore, HB-GAM masks the CS binding sites of the neurite outgrowth inhibiting receptor protein tyrosine phosphatase sigma(PTPσ), which may contribute to the HB-GAM-induced regenerative effect. In vivo studies using two-photon imaging after local HB-GAM injection into prick-injury of the cerebral cortex reveal regeneration of dendrites that has not been previously demonstrated after injuries of the mammalian nervous system. In the spinal cord, two-photon imaging displays HB-GAM-induced axonal regeneration. Studies on the HB-GAM/CS mechanism in vitro and in vivo are expected to pave the way for drug development for injuries of brain and spinal cord. | Heikki Rauvala Mikhail Paveliev Juha Kuja-Panula Natalia Kulesskaya | 2017 | Neural Regeneration Research2017，12，5： | 4 |
| 17 | Carbonic anhydrases in normal gastrointestinal tract and gastrointestinal tumours显示文摘Carbonic anhydrases (CAs) catalyse the hydration of CO2to bicarbonate at physiological pH. This chemical interconversion is crucial since HCO3- is the substrate for several biosynthetic reactions. This review is focused on the distribution and role of CA isoenzymes in both normal and pathological gastrointestinal (GI) tract tissues. It has been known for many years that CAs are widely present in the GI tract and play important roles in several physiological functions such as production of saliva, gastric acid, bile, and pancreatic juice as well as in absorption of salt and water in intestine. New information suggests that these enzymes participate in several processes that were not envisioned earlier. Especially, the recent reports on plasma membranebound isoenzymes Ⅸ and Ⅻ have raised considerable interest since they were reported to participate in cancer invasion and spread. They are induced by tumour hypoxia and may also play a role in von Hippel-Lindau (VHL)-mediated carcinogenesis. | Antti J. Kivel Jyrki Kivel Juha Saarnio Seppo Parkkila | 2005 | World Journal of Gastroenterology2005，11，2： | 4 |
| 18 | Fluid dynamic modeling of a free piston engine with labyrinth seals显示文摘Preliminary design and simulation of a free piston engine suitable for small-scale energy production in distributed energy systems is presented in this paper.The properties,particularly the properties of gas seals of the engine are simulated using a simulation program developed for this case,and the results are utilized in preliminary main design parameter selection.The engine simulation program was developed by combining and modifying the source codes of the simulation and calculation programs obtained from Helsinki University of Technology,Tampere University of Technology,and Lappeenranta University of Technology.Because of the contact-free labyrinth seal used in the piston,the efficiency of the motor is lower than the efficiency of a conventional motor with oil lubricated piston rings.On the other hand,the lack of bearing losses,and the lack of losses associated with a crankshaft system and a gearbox,as well as the lack of lubrication oil expenses,compensates this effect.As a net result,this new motor would perform slightly better than the conventional one.Being completely oil-free,it is very environmentally friendly,and its exhaust gases are completely free of oil residuals which are causing problems in normal gas motors. | Jaakko Larjola Juha Honkatukia Petri Sallinen Jari Backman | 2010 | Journal of Thermal Science2010，19，2： | 4 |
| 19 | Real-time recognition of sows in video: A supervised approach显示文摘This paper proposes a supervised classification approach for the real-time pattern recognition of sows in an animal supervision system(asup).Our approach offers the possibility of the foreground subtraction in an asup’s image processing module where there is lack of statistical information regarding the background.A set of 7 farrowing sessions of sows,during day and night,have been captured(approximately 7 days/sow),which is used for this study.The frames of these recordings have been grabbed with a time shift of 20 s.A collection of 215 frames of 7 different sows with the same lighting condition have been marked and used as the training set.Based on small neighborhoods around a point,a number of image local features are defined,and their separability and performance metrics are compared.For the classification task,a feed-forward neural network(NN)is studied and a realistic configuration in terms of an acceptable level of accuracy and computation time is chosen.The results show that the dense neighborhood feature(d.3×3)is the smallest local set of features with an acceptable level of separability,while it has no negative effect on the complexity of NN.The results also confirm that a significant amount of the desired pattern is accurately detected,even in situations where a portion of the body of a sow is covered by the crate’s elements.The performance of the proposed feature set coupled with our chosen configuration reached the rate of 8.5 fps.The true positive rate(TPR)of the classifier is 84.6%,while the false negative rate(FNR)is only about 3%.A comparison between linear logistic regression and NN shows the highly non-linear nature of our proposed set of features. | Ehsan Khoramshahi Juha Hietaoja Anna Valros Jinhyeon Yun Matti Pastell | 2014 | Information Processing in Agriculture2014，1，1： | 3 |
| 20 | A comprehensive and up-to-date web-based interactive 3D emergency response and visualization system using Cesium Digital Earth: taking landslide disaster as an example显示文摘As with the fast advances in the technologies of big Earth data and information communication,Web-based 3D GIS system has come a long way from a few years ago.These advances reflect in many aspects of 3D GIS such as higher real-time performance,enhanced interactivity,more realistic 3D visualization effect and improved user interface.This paper aims to present a comprehensive and upto-date 3D Web GIS for Emergency Response using the current vue.js web application framework and the well-known Cesium APl,taking landslide disaster as an example.Building upon recent advances in WebGL technology,we developed a suite of enhanced 3D spatial analysis functions,including interactive route planning,instant text/image/video messaging being incorporated into both 3D WebGL page and mobile GIS applications,and progressive 3D construction and AR visualization using LiDAR and camera over local emergency network or internet.Moreover,professional functions such as landslide susceptibility mapping,landslide monitoring,spatial temporal contingency plan management,landslide information management,personnel and equipment management,and communication are all implemented and integrated in the 3D GIS system.Most of the functions of the system are implemented using open-source projects,which is beneficial to the development of the 3D GIS research community. | Zhiyuan Yang Jing Li Juha Hyppa Jianhua Gong Jingbin Liu Banghui Yang | 2023 | Big Earth Data2023，7，4： | 3 |
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