检索结果-南通市图书馆

The Impact of Shor. Selling Disclosur. r.gulator. Constr.int on the Lending Mar.et and Stock Owner.hip

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Jour.al of Moder. Accounting and Auditing 2024年第3期20卷 99-114页

作者： geoffrey Ducour.au Jinliang Li Yan Li Zigan Wang Qie Ellie Yin Tsinghua Univer.ity BeijingChina The Univer.ity of Hong Kong Hong KongChina Tsinghua Univer.ity ShenzhenChina Hong Kong Baptist Univer.ity Hong KongChina

We examine the impact of the shor. sell disclosur.(SSD)r.gime on the stock lending mar.et and investor.behavior.,employing a stagger.d differ.nce-indiffer.nce(DiD)*** r.sear.h r.veals that the intr.duction of the disclosur. r.gime enhances mar.et tr.nspar.ncy,r.sulting in a diminished appeal of stock owner.hip in the lending mar.et for.active *** shift is accompanied by a r.duction in infor.ation leakage r.sks and longer.loan ***,our.analysis r.veals a significant decr.ase in the r.sk of loan r.call by 4.87%,accompanied by an aver.ge incr.ase of 23.72%in loan dur.tion for.shor. selling ***,the cost associated with shor.-sell disclosur. causes a decline in both lending supply and shor. demand.

关键词： shor. sell disclosur. stock equity lending mar.et stock owner.hip

Low-Level Antibiotic r.sistance among Staphylococcus aur.us and Gr.m-Negative Pathogens fr.m Infected Skin and Soft Tissues in r.r.l Kenya

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Open Jour.al of Medical Micr.biology 2024年第1期14卷 23-38页

作者： Justin Nyasinga Zubair.Munshi Lillian Musila Ephantus Mbugua geoffrey Omuse Guntur. r.vathi Depar.ment of Pathology Aga Khan University Nairobi Kenya Depar.ment of Biomedical Sciences and Technology Technical University of Kenya Nairobi Kenya Institute of Science Technology and Innovation Pan-African University Nairobi Kenya United States Ar.y Medical r.sear.h Dir.ctor.te—Afr.ca Nairobi Kenya

Intr.duction: Bacter.al skin and soft tissue infections (SSTIs) ar. a cause of fr.quent inpatient and outpatient car. visits whose causative agents ar. associated with a high antimicr.bial r.sistance bur.en. For.insights on antimicr.bial susceptibilities in a r.r.l setting, we examined specimens fr.m suspected SSTIs fr.m two public health facilities in Kenya. We additionally assessed antibiotic use, appr.pr.ateness of empir.c ther.py and r.sk factor. for.SSTI. Methodology: Between 2021 and 2023, 265 patients at Kisii and Nyamir. County r.fer.al hospitals wer. enr.lled. Wound swabs/aspir.tes wer. collected and pr.cessed following standar. micr.biological pr.cedur.s. Identification and antimicr.bial susceptibility wer. per.or.ed using the VITEK 2 Compact platfor.. Demogr.phic, clinical, and micr.biological data wer. analyzed with r.Statistical softwar.. r.sults: S. aur.us was isolated in 16.2% (43/265) of patients with a methicillin r.sistance (Mr.A) pr.por.ion of 14% (6/43). While 13/15 dr.gs elicited susceptibilities r.nging fr.m 84% - 100%, penicillin (16%) and tr.methopr.m-sulfamethoxazole [TMP-SXT] (23%) yielded the lowest susceptibilities. Escher.chia coli (n = 33), Klebsiella pneumoniae (n = 8), Pseudomonas aer.ginosa (n = 8), and Citr.bacter.species (n = 4) wer. the most commonly isolated gr.m-negative species. Gr.m-negative str.ins showed high susceptibilities to most of the tested dr.gs (71% - 100%) with the exception of ampicillin (18%), TMP-SXT (33%), and fir.t and second gener.tion cephalospor.ns. Conclusions: The low Mr.A pr.valence and gener.lly high antibiotic susceptibilities for.S. aur.us and gr.m-negative bacter.a pr.sent oppor.unities for.antibiotic stewar.ship in the study setting. Diminished susceptibilities against penicillin/ampicillin and TMP-SXT accor. with pr.vailing local data and add a layer.of evidence for.their.cautious empir.c use.

关键词： S. aur.us Mr.A Gr.m-Negative Bacter.a Antimicr.bial r.sistance SSTIs Kenya

Enhancing Cyber.ecur.ty thr.ugh AI and ML: Str.tegies, Challenges, and Futur. Dir.ctions

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Jour.al of Infor.ation Secur.ty 2024年第3期15卷 320-339页

作者： Mar.am r.shanaei Mahir.r. Khan Natalie N. Sylvester Infor.ation Sciences and Technology Depar.ment Pennsylvania State University Abington USA

The landscape of cyber.ecur.ty is r.pidly evolving due to the advancement and integr.tion of Ar.ificial Intelligence (AI) and Machine Lear.ing (ML). This paper.explor.s the cr.cial r.le of AI and ML in enhancing cyber.ecur.ty defenses against incr.asingly sophisticated cyber.thr.ats, while also highlighting the new vulner.bilities intr.duced by these technologies. Thr.ugh a compr.hensive analysis that includes histor.cal tr.nds, technological evaluations, and pr.dictive modeling, the dual-edged natur. of AI and ML in cyber.ecur.ty is examined. Significant challenges such as data pr.vacy, continuous tr.ining of AI models, manipulation r.sks, and ethical concer.s ar. addr.ssed. The paper.emphasizes a balanced appr.ach that lever.ges technological innovation alongside r.gor.us ethical standar.s and r.bust cyber.ecur.ty pr.ctices. This appr.ach facilitates collabor.tion among var.ous stakeholder. to develop guidelines that ensur. r.sponsible and effective use of AI in cyber.ecur.ty, aiming to enhance system integr.ty and pr.vacy without compr.mising secur.ty.

关键词： Ar.ificial Intelligence Machine Lear.ing Cyber.ecur.ty Data Pr.vacy and Secur.ty Ethical Standar.s

Navigating AI Cyber.ecur.ty: Evolving Landscape and Challenges

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Jour.al of Intelligent Lear.ing Systems and Applications 2024年第3期16卷 155-174页

作者： Mar.am r.shanaei Mahir.r. Khan Natalie N. Sylvester IST Depar.ment Pennsylvania State University Abington Abington USA

The r.pid integr.tion of ar.ificial intelligence (AI) into cr.tical sector. has r.vealed a complex landscape of cyber.ecur.ty challenges that ar. unique to these advanced technologies. AI systems, with their.extensive data dependencies and algor.thmic complexities, ar. susceptible to a br.ad spectr.m of cyber.thr.ats that can under.ine their.functionality and compr.mise their.integr.ty. This paper.pr.vides a detailed analysis of these thr.ats, which include data poisoning, adver.ar.al attacks, and systemic vulner.bilities that ar.se fr.m the AI’s oper.tional and infr.str.ctur.l fr.mewor.s. This paper.cr.tically examines the effectiveness of existing defensive mechanisms, such as adver.ar.al tr.ining and thr.at modeling, that aim to for.ify AI systems against such vulner.bilities. In r.sponse to the limitations of cur.ent appr.aches, this paper.explor.s a compr.hensive fr.mewor. for.the design and implementation of r.bust AI systems. This fr.mewor. emphasizes the development of dynamic, adaptive secur.ty measur.s that can evolve in r.sponse to new and emer.ing cyber.thr.ats, ther.by enhancing the r.silience of AI systems. Fur.her.or., the paper.addr.sses the ethical dimensions of AI cyber.ecur.ty, highlighting the need for.str.tegies that not only pr.tect systems but also pr.ser.e user.pr.vacy and ensur. fair.ess acr.ss all oper.tions. In addition to cur.ent str.tegies and ethical concer.s, this paper.explor.s futur. dir.ctions in AI cyber.ecur.ty.

关键词： AI Cyber.ecur.ty Adver.ar.al Attacks Defensive Str.tegies Ethical AI

Investigating the impact of the univer.al function of the nuclear.pr.ximity potential in heavy-ion fusion cr.ss sections

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Communications in Theor.tical Physics 2024年第5期76卷 86-93页

作者： r.Ghar.ei E Sar.ar. Depar.ment of Physics Sciences FacultyHakim Sabzevari UniversityPO Box 397SabzevarIran Depar.ment of Physics Faculty of ScienceFerdowsi University of MashhadPO Box 91775-1436MashhadIran Science Faculty Department of PhysicsTarbiat Modares UniversityTehranIran

The fusion bar.ier. and cr.ss sections of 15 colliding systems with 320≤Z_(1)Z_(2)≤1512 ar. investigated in detail to under.tand the influence of the univer.al function of pr.ximity potential for.alism in the heavy-ion fusion *** r.alize this goal,we select thr.e ver.ions of the phenomenological pr.ximity potentials,including Pr.x.77,Zhang 2013,and Guo 2013,to calculate the nucleus-nucleus *** exper.mental fusion cr.ss sections for.the selected r.actions ar. analyzed using the standar. coupled-channel calculations,including couplings to the low-lying 2^(+)and 3^(-)states in the tar.et and *** calculated r.sults show that the univer.al functions of the Guo 2013 and Pr.x.77 models pr.vide the lowest and highest fusion bar.ier.,*** addition,it is found that the height of the fusion bar.ier. is enhanced by incr.asing the mass number.of the pr.jectile fr.m light to heavy *** highest sensitivity to the mass number.of the pr.jectile belongs to the r.sults of Pr.x.77.A discussion is also pr.sented on the influence of the univer.al function on the r.dial behavior.of the inter.ction potential in the allowed r.gion for.over.apping *** r.sults r.veal that the best fit to the exper.mental data of the fusion cr.ss sections for.the r.actions involving light and medium nuclei is obtained using the univer.al function of the Zhang 2013 *** the heavier.systems,the r.sults of the Guo 2013 model at sub-bar.ier.ener.ies pr.vide a good descr.ption of the available data.

关键词： fusion r.actions pr.ximity-type potentials univer.al function coupled-channel calculations

Assessment of r.inwater.Quality in War.i and Envir.n, Souther. Niger.a for.Domestic Pur.oses

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Jour.al of Geoscience and Envir.nment Pr.tection 2024年第6期12卷 255-268页

作者： Iwekumo E. Agbozu Tobor. r. Maminor.Uwem Bassey Depar.ment of Envir.nmental Management and Toxicology Federal University of Petroleum Resources Effurun Nigeria Depar.ment of Science Labor.tor. Technology Delta State University Abraka Nigeria

The study aimed at assessing the physiochemical char.cter.stics of r.inwater.in War.i and it envir.n was investigated. Pb, Zn, Cd, Cu and Cr.concentr.tions in r.inwater.fr.m r.of and non-r.of sour.es wer. deter.ined using Atomic Absor.tion Spectr.photometr.. Thr.e geospatial locations compr.sing Jakpa, Udu, and Ubeji wer. selected based on pr.vailing anthr.pogenic activities. The r.inwater.samples wer. systematically collected fr.m (aluminum) r.of and non-r.of sour.es for.the months of Apr.l, June, and August and October.2022, tr.ated and analyzed in the labor.tor. for.sixteen physicochemical par.meter.. r.sults wer. statistically analyzed using ANOVA, and T-test for.the deter.ination of the level of r.lationships and var.ations acr.ss geospatial locations. Significant cor.elations (r.= 0.72) exist between Cr.in r.inwater.fr.m r.of and non-r.of sour.es. Implying point-sour.e contaminations and may be emanating fr.m the influence of r.of mater.als. Fur.her.or., high concentr.tions of Cd and Pb in r.of sour.e above WHO standar.s wer. mostly in Jakpa and Ubeji. Calculated Health r.sk Index (Hr.) for.childr.n and adult is gr.ater.than 1. The r.sults showed that most samples fr.m the locations ar. consider.d not safe (Hr. > 1) especially for.Cd, which means that ther. ar. potential health r.sks consuming r.inwater.fr.m Jakpa, Udu and Ubeji. Ther.for., ther. is need for.pr.mpt sensitization pr.gr.m to dissuade people fr.m dir.ctly dr.nking r.inwater.fr.m these locations.

关键词： Water.Quality Health r.sks r.inwater Heavy Metals War.i Envir.ns

Bior.mediation Potential of the Macr.alga Ulva lactuca (Chlor.phyta) for.Ammonium r.moval in Elastomer.Industr. Wastewater

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advances in Bioscience and Biotechnology 2024年第6期15卷 325-343页

作者： Diego Lelis Alex Enr.ch-Pr.st Camille r. Chaves Thuane Mendes Anacleto r.ber.a r. C. Per.ir. Vinicius P. de Oliveir. Pr.gr.ma de Ps-Gr.duao em Biotecnologia Vegetal e Biopr.cessos Universidade Federal do Rio de Janeiro Rio de Janeiro Brazil Unidade Multiusur.o de Anlises Ambientais Universidade Federal do Rio de Janeiro Rio de Janeiro Brazil Institute of Mar.ne Science Federal University of So Paulo (IMar/UNIFESP) Santos Brazil Depar.ment of Thematic StudiesEnvir.nmental Change and Biogas Solutions r.sear.h Center.(BSr.) Linkping University Linkping Sweden Depar.ment of Mar.ne Biology Institute of Biology Federal University of Rio de Janeiro Rio de Janeiro Brazil

Dur.ng the pr.duction of nitr.le r.bber. significant amounts of nitr.gen in the for. of ammonium ar. gener.ted in the wastewater. The dischar.e of this high-nitr.gen wastewater.can lead to ser.ous envir.nmental issues, including eutr.phication, disr.ption of aquatic ecosystems, and gr.undwater.contamination. To mitigate these impacts, this r.sear.h explor.d the bior.mediation capabilities of the macr.algae Ulva lactuca (Chlor.phyta) for.r.moving nitr.gen fr.m nitr.le r.bber.pr.duction wastewater. The study employed single-phase and Michaelis-Menten decay models based on ammonium consumption, using var.ous dilutions of wastewater.to identify the optimal concentr.tion for.tr.atment. The physiological state of the macr.algae was monitor.d by measur.ng the photosynthetic capacity and specific gr.wth r.te dur.ng the exper.ments. In the pr.sence of U. lactuca, ammonium concentr.tions decr.ased in all tr.atment gr.ups, confir.ing that the ammonium kinetics confor.ed to both applied models. Our.r.sults show that U. lactuca effectively r.duces ammonium concentr.tions, with an appr.ximate r.moval r.te of 0.020 µM·g−1·min−1 acr.ss differ.nt wastewater.concentr.tions (70%, 80%, 90%, and 100%). Notably, the tr.atments with 70%, 80%, and 90% wastewater.str.ngth achieved about 67% r.duction in ammonium, demonstr.ting the alga’s capacity to tr.at high-nitr.gen wastewater. The photosynthetic per.or.ance of U. lactuca initially declined in contr.l conditions but stabilized acr.ss all tr.atments, highlighting its adaptability. The kinetic analysis using the Michaelis-Menten model indicated a Vmax of 1342 μM·g−1·DMh−1, suggesting a r.bust capacity for.ammonium uptake when fully satur.ted. Our.study under.cor.s the potential of Ulva lactuca as a cost-effective and efficient agent for.wastewater.bior.mediation, par.icular.y in settings with high nitr.gen loads.

关键词： Photosynthetic Quantum Yield One-Phase Decay Model Michaelis-Menten Model Nitr.gen Physiological Par.meter. Elastomer.

Pile foundation in alter.ate layer.d liquefiable and non-liquefiable soil deposits subjected to ear.hquake loading

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Ear.hquake Engineer.ng and Engineer.ng Vibr.tion 2024年第2期23卷 359-376页

作者： Pr.veen Huded M Sur.sh r.Dash LEA Associates South East Asia Pvt.Ltd. New Delhi 110044India Indian Institute of Technology Bhubaneswar Khurda 752050India

Pile foundations ar. still the pr.fer.ed foundation system for.high-r.se str.ctur.s in ear.hquake-pr.ne *** foundations have exper.enced failur.s in past ear.hquakes due to *** on pile foundations in liquefiable soils has pr.mar.ly focused on the pile foundation behavior.in two or.thr.e-layer.d soil ***,in natur.l occur.ence,it may occur.in alter.ative layer. of liquefiable and non-liquefiable ***,the exper.mental and/or.numer.cal studies on the layer.d effect on pile foundations have not been widely addr.ssed in the *** of the design codes acr.ss the wor.d do not explicitly mention the effect of sandwiched non-liquefiable soil layer. on the pile *** the pr.sent study,the behavior.of an end-bear.ng pile in layer.d liquefiable and non-liquefiable soil deposit is studied *** study found that the kinematic bending moment is higher.and gover.s the design when the effect of the sandwiched non-liquefied layer.is consider.d in the analysis as opposed to when its effect is ***,ignor.ng the effect of the sandwiched non-liquefied layer.in a liquefiable soil deposit might be a nonconser.ative design appr.ach.

关键词： pile foundation liquefaction alter.ately layer.d soil fixity effect layer.d effect

Modeling Blood Flow in Veins of Unifor. Pr.per.ies (Gir.ffe Jugular.Vein)

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Open Jour.al of Biophysics 2024年第2期14卷 132-153页

作者： r.ger. Omboga Amenya Johanna Kibet Sigey geoffrey Mor.aso Ole Maloiy David Mwangi Theur. Depar.ment of Mathematics and Physical Sciences Dedan Kimathi University of Technology Nyeri Kenya Depar.ment of Pur. and Applied Mathematics School of Mathematical Sciences Jomo Kenyatta Unversity of Agriculture and Technology Kisii Kenya Institute of Animal Physiology and Biotechnology r.sear.h University of Nairobi Nairobi Kenya

This paper.models the gir.ffe’s jugular.veins as a unifor. collapsible tube fr.m a r.gid skull. The equations gover.ing one-dimensional steady flow thr.ugh such a tube for.var.ous conditions have been developed. The effects of iner.ial and inclination angles that have not been discussed pr.viously have been included. It has been shown that differ.nt flows for.a unifor. tube (vein) ar. possible. However. this flow matches that of a jugular.vein which is super.r.tical, and the steady solution has been given by the balance between the dr.ving for.es of gr.vity and the viscous r.sistance to the flow at the r.ght atr.um of the hear. must be sub-cr.tical for.a fixed r.ght-atr.um pr.ssur. which means that an elastic jump is r.quir.d to r.tur. the flow to sub-cr.tical fr.m the super.r.tical flow upstr.am this type of r.lationship gives r.se to flow limitation at the same time given any r.ght atr.um fixed pr.ssur. ther. exists a maximum flow r.te which when exceeded the boundar. conditions of the flow do not hold boundar. conditions at the r.ght atr.um ar. not satisfied hence making the steady flow impossible this mechanism of flow limitation is slightly differ.nt fr.m the other.one in that causes air.ays thr.ugh for.ed expir.tion fr.m the obser.ation made it is clear.y shown that ther. is an intr.vascular.pr.ssur. differ.nce with a change in height.

关键词： Blood Flow Jugular.Vein Cr.ss-Sectional Ar.a Super.r.tical Subcr.tical Jump