疫情防控中的征用补偿:适用范围的思考

疫情防控过程中大量进行的政府征用面临着疫情过后补偿机制的落实任务。厘定征用补偿机制的适用范围成为首要课题。就规范框架所展开的征用补偿机制而言,需要排除"名为征用、实为征收"和"由征用转化而成的征收",并特殊处理国有资产的征用问题。在可能扩充的范围上,可以考虑"名为限制性措施、实为征用"和人力、服务等非有形物的征用。同时,征用导致特定主体的额外"特别牺牲",以及在平台经济模式下电商平台是否可能构成新的征用样态,也值得关注。     

猪圆环病毒2型套式PCR检测方法的建立及应用

根据GenBank登录的猪圆环病毒 2型 (PCV2 )的全基因组序列 ,设计了 2对引物 ,建立了检测PCV2的套式PCR方法。对该方法用序列分析、酶切等方法进行了鉴定。同时用该套式PCR方法对华南地区 2 87个猪场的 15 6 0份样品进行了检测 ,结果 ,983份为PCV2阳性 ,阳性率为6 3%。     

Serious Youth Gun Offenders and the Epidemic of Youth Violence in Boston

Boston, like many other major cities, experienced a sudden increase in youth homicides during the late 1980s and early 1990s. Research evidence suggests that the recent epidemic of urban youth violence was intensely concentrated among criminally active young black males residing in disadvantaged urban neighborhoods rather than all young black males residing in disadvantaged black neighborhoods. Other researchers, however, suggest that there was a diffusion of guns and gun violence from youth involved in street crack markets to youth outside the drug trade who armed themselves primarily for self-protection against the armed criminally active youth. In this paper, criminal history data are analyzed to determine whether the criminal profile of Boston arrested youth gun offenders changed over time and micro-level data on youth gun assault incidents in Boston are examined to unravel whether there were noteworthy changes in the nature of these violent events over time. The results of these analyses suggest that the youth violence epidemic in Boston was highly concentrated among serious youth gun offenders rather than a diffusion of guns away from the street drug trade, gangs, and criminally active youth.     

Controlling Anoutbreak

正China lends strong support alongside the international community to counter the Ebola virus The Ebola epidemic in West Africa has killed 5,459 people since its outbreak in Guinea in December 2013.The virus’rapid spread into neighboring countries led the World Health Organization(WHO)to classify it as an international public health emergency on August 8.The three worst-hit countries are Guinea,Liberia and Sierra Leone.     

新冠肺炎疫情对宏观经济的影响分析及政策建议

该文通过对比分析发现,由于疫情影响地域范围、停复工时间和经济结构等因素存在差异,新冠肺炎疫情对经济的短期影响会大于2003年非典疫情;而且,由于部分民企和居民等微观主体的抗风险能力更弱,存在传导形成次生风险的可能。因此,必须坚持疫情防控和经济托底相结合,发挥逆周期政策作用,切实降低此次疫情的负面经济影响。     

新冠肺炎疫情防控中的“志愿者+社区社会组织”模式服务效力及其反思

在新冠肺炎疫情期间,社区的“志愿者+社区社会组织”实务模式在防控疫情蔓延、平缓居民心态、链接生活物资等方面发挥了重要作用。从志愿者参与途径看,“志愿者+社区社会组织”服务实践主要体现为价值取向中的个体主动、从众压力下的群体驱动、基于科层权威的单位组织、社区自治组织发动的“网格+志愿服务”、注重多元主体协同的混合五种具体模式,并在防疫工作中发挥了各自效力。该实务模式尚存志愿者和社区社会组织工作人员的定位分化、志愿服务风险系数高、志愿者疫情防控能力不足等突出问题。为推进志愿服务参与社区社会组织的疫情防控效率,须明晰组织与志愿者之间的合作基础,实施志愿服务的成本收益分析,筛选合适的志愿服务模式,总结疫情防控的基本经验,推动志愿服务的制度化建设。     

风险社会下农村重大疫情防控策略及其治理逻辑——基于河南省H村新冠肺炎疫情的防控分析

新冠肺炎疫情是时空压缩的现代化中社会风险的突发呈现,具有强传播性、不确定性等特点,这增加了防控和治理难度。农村社会为化解疫情防控资源不足和设施薄弱等问题,实现了由常规治理向运动式治理的快速切换,通过集中资源、快速决策、硬核管控、群众参与等方式,建立起“低成本、高效率”的治理体系,实现了疫情的高效防控。农村高质量的防控源于治理模式的转换,也得益于村庄日常性合作文化的培育、组织载体的建设和群众路线的坚守,这对基层治理能力的提升、乡村振兴的实践及国家应急管理体系的完善都具有重要借鉴意义。     

Medical examiner response to the drug overdose epidemic in King County Washington: “Real-time” surveillance,data science,and applied forensic epidemiology

As the overdose epidemic overwhelmed medicolegal death investigation offices and toxicology laboratories, the King County Medical Examiner's Office responded with “real-time” fatal overdose surveillance to expedite death certification and information dissemination through assembling a team including a dedicated medicolegal death investigator, an information coordinator, and student interns. In-house testing of blood, urine, and drug evidence from scenes was performed using equipment and supplies purchased for surveillance. Collaboration with state laboratories allowed validation. Applied forensic epidemiology accelerated data dissemination. From 2010 to 2022, the epidemic claimed 5815 lives in King County; the last 4 years accounted for 47% of those deaths. After initiating the surveillance project, in-house testing was performed on blood from 2836 decedents, urine from 2807, and 4238 drug evidence items from 1775 death scenes. Time to complete death certificates decreased from weeks to months to hours to days. Overdose-specific information was distributed weekly to a network of law enforcement and public health agencies. As the surveillance project tracked the epidemic, fentanyl and methamphetamine became dominant and were associated with other indicators of social deterioration. In 2022, fentanyl was involved in 68% of 1021 overdose deaths. Homeless deaths increased sixfold; in 2022, 67% of 311 homeless deaths were due to overdose; fentanyl was involved in 49% and methamphetamine in 44%. Homicides increased 250%; in 2021, methamphetamine was positive in 35% of 149 homicides. The results are relevant to the value of rapid surveillance, its impact on standard operations, selection of cases requiring autopsy, and collaboration with other agencies in overdose prevention.     

Evaluating the sensitivity,stability, and cross-reactivity of commercial fentanyl immunoassay test strips

Illicit fentanyl has flooded the United States' drug market, increasing the risk of overdose and poisonings throughout the general population and accidental exposure among law enforcement officers confiscating the increasing number of seizures. Fentanyl test strips (FTS) are used to obtain presumptive information about the presence of fentanyl in a suspected sample. However, their adoption by law enforcement personnel and seized-drug analysts has been limited because most products are advertised for urine testing, not for assays using water solutions. This study presents an evaluation of four commercial FTS: Rapid Response from BTNX, Inc.; T-Dip Fentanyl (FTY) Urine Dip Cards obtained from Amazon.com ; Premier BioDip FYL10 from Premier Biotech Inc.; and MobileDetect Fentanyl strips from DetectaChem, Inc. Performance characteristics curves were used to compare the products' sensitivity, showing that all can reliably detect fentanyl in aqueous solutions at concentrations below 1 μg/mL, with some of the tests able to reliably detect the drug at 200 ng/mL. A stability study demonstrates the performance of all four FTS brands was only slightly affected after 30 days of storage at two extreme environmental conditions. Fentanyl-related substances are also evaluated using the Rapid Response FTS, which showed high cross-reactivity with para-fluorofentanyl and acetylfentanyl, but lower with ortho-chlorofentanyl, carfentanil, and 4-ANPP. Users should be aware that FTS may give false-negative results even when potentially dangerous levels of carfentanil are present. When testing other common drugs, adulterants, and diluents frequently encountered in seized tablets, concentration-dependent results were obtained and multiple instances of false positives were recorded.