Constraints on Asymmetric Dark Matter in Quintessence Model

The modified cosmology like quintessence model with kination phase predicted the Hubble expansion rate of the universe before Big Bang Nucleosynthesis is different from the standard cosmological scenario. The modified expansion rate leaves its imprint on the relic density of asymmetric dark matter. In this work, we review the calculation of relic density of asymmetric WIMP dark matter in the standard cosmological scenario and quintessence model with kination phase. Then we use the Planck data to find constraints on the annihilation cross section and the mass of the asymmetric dark matter in those models.

The Neutron and Dark Matter in the Standard Model of Particle Physics

The existence of the neutron, originally postulated to justify the stability of the nucleus, is very similar to the postulation of Dark Matter to give stability to galaxies and galaxy clusters. However, the existence of the neutron has been proven as an important part of the nucleus that is linked within its integral structure in the Standard Model of Particle Physics. The Standard Model that began with the electron and the proton, currently, with more than one hundred particles, shows in some parts, cracks that induce to reconsider the veracity of the theories and models. Here it is established that all theories are to some extent false and therefore, so will any model, which is always a specific part of the theory. Also, like several other things, by means of a mathematical calculation, it is clarified why, it has not been possible to incorporate the Dark Matter within the Standard Model. Furthermore, it is reliably demonstrated that the introduction of the Dark matter postulate is superfluous and that the high speeds of stellar rotation determined experimentally are analytically explained with the stellar dynamics described here.

欧七排放标准解读及国七排放标准展望

欧盟于2024年5月8日正式发布了欧七排放标准。该标准合并并简化了原轻型车和重型车的欧6/VI排放标准,基于燃料和技术中性的原则,进一步加严了轻型车和重型车的污染物排放限值。新标准增加了对重型车一氧化二氮(N_(2)O)污染物排放的管控,并强化了对车辆排放耐久性的要求,确保车辆在其整个生命周期内维持低排放水平。对于电动汽车,欧七标准提出了电池可靠性的要求,以提升动力电池在实际使用中的性能。此外,欧七标准对车辆在实际道路行驶中的排放控制更加严格,首次对非尾气排放(制动和轮胎磨损颗粒物)提出了要求。在车辆排放管理方面,欧七标准引入了多个新要求,包括车辆环保护照(EVP)、车载远程监控(OBM)系统和车载燃料及能耗监测(OBFCM),通过数字化监控和管理手段提高车辆的环保性能。最后,本文展望了国七排放标准在污染物限值、非尾气排放、温室气体管控、远程监控等方面的制定工作思路和要求,为我国下阶段排放法规的发展提供参考。

水库运行管理标准化评价研究

以翁源县上庙水库为例,基于AHP-物元可拓法构建了水库运行管理标准化评价体系。建立了包含1个目标层、5个准则层、25个指标层的评价模型,对各指标进行一致性检验,并计算指标权重。同时构建物元可拓模型,确定各定性、定量指标的等级标准,并进行物元关联度与等级计算。

企业ESG表现影响关键审计事项披露吗?

基于2017-2021年我国A股上市公司的经验证据,实证检验企业ESG表现对关键审计事项披露的影响。研究发现,企业ESG表现越差,审计师为应对风险披露的关键审计事项越充分,具体表现为披露数量更多、披露内容更详细。进一步分析发现,ESG表现通过影响企业的经营风险和信息风险,从而影响到关键审计事项披露的信息量,并且在审计师具有行业专长和媒体关注度较高的情况下,企业ESG表现对关键审计事项披露的影响更明显。研究结论不仅丰富了企业ESG表现经济后果的相关文献,而且对新审计报告准则实施后审计师更准确地识别审计风险、提供更有效的审计服务具有启示意义。

线上BOPPPS教学模式在放射科住院医师规范化培训中的应用

目的探讨线上导言、学习目标、预评估、参与式学习、后评估和总结(bridge-in,objective/outcome,pre-assessment,participatory learning,post-assessment,summary,BOPPPS)教学模式在放射科住院医师规范化培训中的应用效果,为促进放射影像学的教学改革提供参考。方法2021年9月—2022年9月,选取浙江大学医学院附属第二医院的放射科住院医师规范化培训(住培)学员48名,基于计算机程序随机分配为试验组(n=24)和对照组(n=24)。试验组使用线上BOPPPS教学模式,对照组采用传统线上教学。以脑小血管病(cerebral small vessel disease,CSVD)评估为教学内容,分析比较2组专业理论知识掌握程度和住培学员满意度。结果试验组住培学员在基础部分的脑室旁脑白质高信号评分低于对照组,并且在大多数与脑小血管病相关的高级问题上表现出色,包括半卵圆中心扩大的血管周围间隙、内侧颞叶萎缩和大脑微梗死得分,差异均有统计学意义(P<0.05)。试验组的基础部分总得分与对照组相似,但在高级问题部分以及理论考核总分上优于对照组[(5.38±1.10)分vs.(4.04±1.37)分],差异有统计学意义(P<0.05)。结论采用线上BOPPPS教学模式对放射科住院医师的规范化培训更为有效,相比传统线上教学有一定的优势。

关键审计事项披露的模仿同构与股价同步性

基于组织社会学研究中的制度理论,以2016—2020年我国A股上市公司为样本,使用TF-IDF方法计算文本相似性指标,考察关键审计事项披露同构效应及其对资本市场信息效率的影响。结果表明:关键审计事项披露存在模仿同构效应,模仿导致的样板化披露会释放更多行业层面信息,减少公司特质信息进入股价,提升了个股的股价同步性。进一步的分析表明,关键审计事项披露同构效应对股价同步性的影响机制源于行业信息“过载”而非信息“降噪”,这种机制是通过影响分析师和机构投资者判断而发挥作用的。

Computerized White Matter and Gray Matter Extraction from MRI of Brain Image

Automated segmentation of white matter (WM) and gray matter (GM) is a very important task for detecting multiple diseases. The paper proposed a simple method for WM and GM extraction form magnetic resonance imaging (MRI) of brain. The proposed methods based on binarization, wavelet decomposition, and convexhull produce very effective results in the context of visual inspection and as well as quantifiably. It tested on three different (Transvers, Sagittal, Coronal) types of MRI of brain image and the validation of experiment indicate accurate detection and segmentation of the interesting structures or particular region of MRI of brain image.

Structural Foundation and Geometry of the Material Singularity (and Its Quantum Entanglement)

In this paper we develop and study, as the second part of one more general development, the energy transmutation equation for the material singularity, previously obtained through the symmetrisation of a wave packet, that is, we develop the correlation between the terms of this equation, which accounts for the formation of matter from a previous vibrational state, and the different possible energy species. These energetic species are ascribed, in a simplified form, to the equation E¯ω=E¯k+E¯f, which allows us, through its associated phase factor, to gain an insight into the wave character of the kinetic energy and thus to attain the basis of the matter-wave, and all sorts of related phenomenologies, including that concerning quantum entanglement. The formation of the matter was previously identified as an energetic process, analogous to the kinetic one, in which finally the inertial mass is consolidated as a mass in a different phase, now, in addition, the mass of the material singularity is identified as a volumetric density of waves of toroidal geometry created in the process of singularisation or energy transfer between species, which makes it possible to establish the real relation or correspondence between the corpuscular and photonic energy equation (E=mc2=hν), i.e. to explain through m the intimate sense of the first equivalence, which explains what νis in the second one.

Group Geometric Algebra and the Standard Model

We show how to generalize the Weyl equation to include the Standard Model fermions and a dark matter fermion. The 2 × 2 complex matrices are a matrix ring R. A finite group G can be used to define a group algebra G[R] which is a generalization of the ring. For a group of size N, this defines N Weyl equations coupled by the group operation. We use the group character table to uncouple the equations by diagonalizing the group algebra. Using the full octahedral point symmetry group for G, our uncoupled Weyl equations have the symmetry of the Standard Model fermions plus a dark matter particle. We describe the symmetry properties of dark matter.

Theory of 3F4D Universe (Beyond Standard Model of Particle Physics)

In this theory, “mass is equivalent to length of imaginary straight line segment” and “direction to imaginary line segment is intrinsic property of that particle which is Equivalent to its intrinsic spin”. With this concept, all fundamental particles, fermions and bosons are described as quanta imaginary string particles with a definite direction. For e.g. unidirectional imaginary straight line with fixed length are massive spin 1/2 fermions;while unidirectional imaginary quanta curved lines are massless spin 1 bosons. Thus, it gives co-relation between massless (curved imaginary line) and spin = 1 properties of boson as proved in QED theory. All fundamental particles of standard model and beyond standard model are arranged in one simple diagram in 3 folds (bottom fold, middle upper and lower folds and top fold) and are projected in 4th Imaginary Dimension in order of decreased in Mass from TeV to approx. 0 eV. This theory is beyond standard model because it predicts new fundamental particles viz. dark matter (spin = 0 massive boson) along with gravitons (spin = 2, massless bosons);4th pair of neutrinos, vertical massless boson (VMB) particles and tri-axis massive boson (spin = 0) particle. The discovery of these new particles will act as solid proof to this theory. With this 3F4D representation of the universe at an atomic and sub-atomic level, it solves lots of current problems of SM of particle physics like matter-antimatter asymmetry, origin of mass of hadrons like protons, origin of mass and L.H. nature for neutrinos, wave-particle duality of particles, etc. giving true insight of fundamental particles. With proving that, dark matter is not a quanta particle, rather it is a single entity and spreads/expands throughout the universe in the form of “web of spider”, it shows space-time is not empty, but it is filled with Continuous lines of Dark Matter and we, materialistic massive objects are floating/sailing w.r.t. current of this vast ocean. Correlation of its continuity with time gives new a definition to time: “Time is neither Illusion nor 4th Dimension, but, it represents Continuous Flow of Single Entity, Dark Matter”. Space-time is not Empty and is filled with massive dark matter, hence, we have to add more terms to newtonian gravitational equation to account for gravitational strength of mass of surrounding dark matter which represents curvature of space-time in terms of Increase in its mass-density w.r.t. to mass-density of flat universe. Finally, using an empirical formula (h = k*c*Q;k = boltzmann’s constant = mass in TeV range) and inverse relation of mass-density of DM with age of the universe (H2 = Constant•G•Mass-Density of DM);Unification of Gravity at TeV is achieved without consideration of “Gravitational Constant, G”, hence, Planck’s Scale is not required.

On Gaugino Dominated Dark Matter

Using the neutral gauginos of and hybridization ideas below the GUT scale, we approach the Dark Matter particle within the Minimal Supersymmetric Standard Model. In the energy range where supergravity effects can be ignored, it is proposed that such DM particle could be inter- preted in terms of a mixture of Bino and Wino states with a lower bound mass not far above the electroweak scale to account for the observed Dark Matter density. We establish the theoretical origin of this particle and study as well its compositeness and its mass bound.

The Periodic Table of Elementary Particles for Baryonic Matter and Dark Matter: Upward-Going ANITA Events

This paper posits that the upward-going ANITA events are derived from the cosmic ray of the baryonic-dark matter (BDM) Higgs boson. In the extended standard model (ESM) for baryonic matter and dark matter, the spontaneous symmetry breaking through the Higgs mechanism for the symmetrical massless baryonic matter left-handed neutrinos and massless dark matter right-handed neutrinos produced massless baryonic matter left-handed neutrinos, sterile massive dark matter neutrinos, and the BDM Higgs boson. The BDM Higgs boson is the composite of the high-mass tau neutrino and the high-mass dark matter neutrino. During the passage through the high-density part of the Earth, the BDM Higgs boson is transformed into the oscillating BDM Higgs boson between the composite of the high-mass tau neutrino and the high-mass dark matter neutrino and the composite of the high-mass tau neutrino and the low-mass dark matter neutrino. The oscillating BDM Higgs boson decays into the high-mass tau neutrino with the extra energy and the low-mass dark matter neutrino (27 eV) in the low-density water-ice layer of the Earth. The high-mass tau neutrino is converted into ultra-high-energy tau neutrino which decays into tau lepton through the charged-current interactions, and tau lepton emerges from the surface of ice. Based on the periodic table of elementary particles, the calculated value for the high-mass tau neutrino with the extra energy is 0.47 EeV in good agreement with the observed 0.56 and 0.6 EeV. The periodic table of elementary particles for baryonic matter, dark matter, and gravity is based on the seven principal mass dimensional orbitals for stable baryonic matter leptons (electron and left-handed neutrinos), gauge bosons, gravity, and dark matter and the seven auxiliary mass dimensional orbitals for unstable leptons (muon and tau) and quarks, and calculates accurately the masses of all elementary particles and the cosmic rays by using only five known constants.

Predicted Dark Matter Quantitation in Flat Space Cosmology

The purpose of this paper is to show how the dark matter predictions of FSC differ with respect to the standard cosmology assertion of a universal dark matter-to-visible matter ratio of approximately 5.3-to-1. FSC predicts the correct ratio to be approximately 9-to-1, based primarily on the universal observations of global spatial flatness in the context of general relativity. The FSC Friedmann equations incorporating a Lambda?&Lambda;?cosmological term clearly indicate that a spatially flat universe must have equality of the positive curvature (matter mass-energy) and negative curvature (dark energy) density components. Thus, FSC predicts that observations of the Milky Way and the nearly co-moving galaxies within 100 million light years will prove the 5.3-to-1 ratio to be incorrect. The most recent galactic and perigalactic observations indicate a range of dark matter-to-visible matter ratios varying from essentially zero (NGC 1052-DF2) to approximately 23-to-1 (Milky Way). The latter ratio is simply astonishing and promises an exciting next few years for astrophysicists and cosmologists. Within the next few years, the mining of huge data bases (especially the Gaia catalogue and Hubble data) will resolve whether standard cosmology will need to change its current claims for the cosmic energy density partition to be more in line with FSC, or whether FSC is falsified. A prediction is that standard cosmology must eventually realize the necessity of resolving the tension between their flatness observations and their assertion of dark energy dominance. The author makes the further prediction that FSC will soon become the new paradigm in cosmology.

智能家居互联互通标准化研究

智能家居是多种技术应用融合的产业,产品品类繁多,具有跨行业的特点。从智能家居诞生起,智能家居产品跨品牌互联互通问题就一直是智能家居产业发展过程中的痛点。本文研究总结了智能家居产业情况,国内、国际智能家居标准化现状,并提出了智能家居互联互通标准化存在的问题,同时分析了Matter标准应用现状以及应用风险,提出了智能家居标准化工作建议,为后续智能家居互联互通标准化工作提供参考和依据。

Standard Model Review and a New 5D Multi-Brane Proposition

Based on a comprehensive review of mainly the non-quantum aspects of the standard model of cosmology, the 5 dimensional models, and the analysis here, we propose a 5 dimensional model with expanding 4D multi-branes. A review of the standard model in the context of many new developments and discoveries in cosmology in the recent times, such as the accelerated expansion of the universe, Plank cosmic microwave measurements, dark energy survey, Hubble tension etc. tends to indicate that the standard model is essentially a patchwork of different theoretical models that have been pieced together in an attempt to explain different aspects of the astrophysical observations, which do not necessarily emanate from a full end-to-end understanding of a physical process. The purpose of each individual theoretical piece such as “inflation” is limited to providing an explanation to the problem area or a gap in our understanding. A number of new theories such as the five-dimensional universe, the bulk and brane, extended theories of gravity, and conformal cyclic cosmology offer alternate ways of addressing the existential aspects of the universe but these models too remain hypothetical with shortcomings and a lack of conclusive evidence. The model proposed by us, presents a way forward in addressing dark matter and dark energy as manifestations of the multiple underlying branes in the aftermath of the big-bang. In the process, we present a theorem of the dimensionality of the expanding universe, which necessitates the need for at least one more dimension in addition to the 4 dimensions of spacetime. While carrying out the review of the standard model, we present new analysis and facts that strengthen the case for the 5th dimension. According to the multi-brane hypothesis presented here, our observed universe could be one of the many branes, and it is more likely than not that in the aftermath of the big-bang that generated our brane, more branes were generated, which further points towards a much more prolonged big-bang event than what has been the perception so far.

我国柴油润滑性检测方法标准的发展与变化

2005年之前,我国一直参照国际标准ISO 12156-1-1997《柴油高频往复设备(HFRR)用润滑剂性能评定.第1部分:试验方法》进行柴油润滑性试验,直至2005年9月发布实施了我国的第一个柴油润滑性试验方法:SH/T 0765-2005《柴油润滑性评定法(高频往复试验机法)》,经过多年的积累和我国的实际情况,对第一版试验方法加以调整修改,于2022年5月实施了第二版试验方法NB/SH/T 0765-2021《柴油润滑性的评定高频往复式试验机法》。结合工作实际,对我国两次发布的试验方法加以归纳总结和分析。

闽台两地建筑工程计量计价模式对比与衔接路径研究

闽台两地工程造价管理模式的原理相似,但形成的路径和要素方面有一定的差异。对闽台两地建筑工程计量与计价基础、费用组成与计量基本单元、计量规则与计价程序进行对比,在此基础上,提出两岸房屋建筑工程计量与计价模式的衔接路径,希望通过行业标准的互认互通推动海峡两岸融合发展。

智能家居平台分析与广电业务方向

分析智能家居行业存在标准不统一、各个体系之间不协调,操作繁琐、场景定义与用户需求无法完全切合等问题。探讨智能家居标准Matter制订进展情况,由标准建立到大规模产品推出需要较长时间,为解决各体系相互不通,各App建立的壁垒,提出借鉴Home Assistant的API模式思路,开发广播电视智能家居服务平台,满足用户需求,结合广播电视自身优势,开拓广播电视新业务形态。

AA0+MBR工艺在北方再生水厂中的应用——以北京市某再生水厂为例

北京市某再生水厂设计总规模为2.4×10^(4)m^(3)/d,采用AA0+MBR工艺解决工程用地面积小、排放标准高等问题。实际运行数据表明,该工艺在进水水质波动较大、个别指标超过设计水质、冬季低温等的不利工况下,仍具有良好的有机物降解和脱氮除磷效果。