Beyond incubation: an analysis of firm survival and exit dynamics in the post-graduation period

With regard to the survival rates of business incubator (BI) firms, the literature mainly presents findings of failure rates only during the incubation period. Little is known about the survival or exit dynamics of firms after leaving the incubator facilities. This study approaches this research question by examining the survival of 352 firms from five German BIs after their graduation. The findings suggest that graduation causes an immediate negative effect on survivability that lasts up to 3 years after leaving the incubators. Furthermore, heterogeneous patterns of post-graduation exit dynamics between the BIs were observed. It was also found that performance during the incubation period is an indicator of the propensity of business closure after graduation. This study offers valuable insights and implications for all stakeholders of BI-initiatives.      

A city-level analysis of property crime clearance rates

Theft, burglary, and vehicle theft are among the most frequently committed and least commonly cleared Part I offenses in the United States, but have received disproportionately little attention in the clearance literature. This study contributes to recent efforts to remedy this shortage by presenting offense-specific analyses of burglary, larceny, and vehicle theft clearance rates in a sample of 110 large US cities. Data were gathered from the Uniform Crime Report, the Law Enforcement Management and Administrative Statistics survey, and the American Community Survey. Independent variables comprised social disorganization measures (e.g. residential instability, poverty, etc.) and policing variables, including the use of broken windows policing. Although broken windows policing is related to higher clearance rates in a few prior studies, that effect was not observed in the present work. Racial diversity and police spending per capita (which were negatively associated with clearance rates) were the only variables that were significantly associated with the clearance of all three crimes.     

A model for ranking the punitiveness of the states

There has recently been much interest in the measurement of imprisonment rates. Since this variable has such widespread importance in criminological research and policy, new methods are called for in expanding the procedures for evaluating levels of punitiveness as indicated by imprisonment rates. This paper presents a new model using logarithmic transformations to develop a system for ranking the punitiveness of the states. Comparisons are made between different approaches to specifying imprisonment rates including controls for crime rates and arrest rates. Results of the analyses indicate that the use of this model generates somewhat different rankings of punitiveness compared with those based on sample imprisonment rates or prisoner/arrest ratios.     

论相对刑事责任年龄人在绑架杀人犯罪中的刑法适用——兼谈刑法第十七条第二款的立法根据

本文针对已满十四周岁不满十六周岁的人绑架杀人应如何适用刑法的争论 ,剖析了肯定说、否定说以及全国人大常委会法工委“答复”的错误和不足 ,重新论证已满十四周岁不满十六周岁的人绑架杀人的 ,完全符合故意杀人罪的构成要件 ,应以故意杀人罪定罪处罚。刑法第十七条第二款的立法根据除了考虑犯罪的严重性以及已满十四周岁不满十六周岁的人的辨认控制能力特点之外 ,实际上还考虑到犯罪的常发性和包容性。     

Education and development; females’ education and fertility reduction in Africa: The case of Tigray,Ethiopia

The livelihood of the population in general, and females in particular, is affected by different socio-economic, demographic, environmental, cultural and other factors. the three main demographic variables: fertility, mortality and migration, which are also functions of some other variables, determine the quality of women’s lives. Some of the variables that are expected to determine the levels of fertility, mortality and migration may include literacy status, educational level, occupation, income, place of residence, marital status and other factors. Fertility is the most important variable in the population dynamics. A study was made in tigray, ethiopia, that included 2290 individuals. Of these, 1371 (60%) were females. the method of enumeration was used in order to collect the necessary information from the target population. the age structure, household composition, place of residence, educational level and other background variables were analysed. Results show that the literacy status and educational level were important variables that determined the age at first marriage, the use of family planning services, and antenatal and postnatal care. thus, it was concluded that female education is a key variable that enhances the participation of women in the development process by improving their status through the reduction of fertility.     

Police Manipulations of Crime Reporting: Insiders’ Revelations

Social scientists have theorized about the corruption of crime reports (Bayley, 1983; Campbell, 1976). Yet, scant empirical research has examined the impact of modern policing methods on the accuracy of crime reporting. Our research uses an anonymous survey of 1,770 retired New York City police officers examining retirees’ experiences with crime report manipulations across their years of retirement. This includes retirees from the community policing as well as police performance management eras. We subject the data to various statistical tests including tabular analysis, graphical trends to visualize the data, MANOVA, and logistic regression to explain report manipulations. Results indicate that the misuse of the performance management system and pressures on officers from management are key explanations for manipulating crime reports. Individual explanatory variables such as gender, educational status, rank, race, and marital status had no effect. Our research supports Bayley’s and Campbell’s theories. We recommend greater transparency to remedy this.     

Skunks in an English Woodland: Should England Embrace For‐Profit Higher Education?

The British government is encouraging the growth of for‐profit alternative providers of higher education (HE). While it is true that for‐profits have opened HE access to previously under‐served groups and have been more agile in reacting to market demand, they have done so at a considerable cost to students and the taxpayer because they do not share in the cost of the failure of HE to ensure a payoff for many of their students. The US experience with for‐profits should be a cautionary tale for those supporting their expansion in Britain. Policy is needed to craft a regulatory framework that produces the benefits that for‐profits can provide, but minimises the costs that often accompany them. At present, it is far from clear that expanding alternative providers—that is, for‐profits—would ‘work better’ for students.     

Effects of cocaine and heroin,and their combination,on the development rate of Calliphora vomitoria (Diptera: Calliphoridae)

Insects present on or near decomposing bodies are collected by forensic entomologists and used to estimate the post-mortem interval. Drugs metabolized by a person before death may affect the rate of development of insects feeding on the corpse. This study aimed to determine the effects of cocaine and heroin main metabolites on the development rate of the Calliphora vomitoria (Diptera: Calliphoridae) and their implications on minimum post-mortem interval determination. Groups of 250 eggs each were placed into four separate pots of 150 g of minced pork meat being either un-spiked, or spiked with benzoylecgonine, morphine, or a combination of both. Larval length (mm) and weight (mg) measurements were taken twice daily and the rate of development of the insects’ life cycle was monitored until eclosion. Results show that cocaine-fed larvae developed less in length and weight than the control group. Heroin-fed larvae showed a more fluctuating pattern, being smaller and lighter than the control group for most of their larval cycle, but overtaking them in both parameters towards pupation. Combination-fed larvae seemed to favour the effects of cocaine. The three conditions also had a significant impact on the length of the insects’ life cycle. Cocaine and drug combination treatments increased the length of the second and third instar stages, but led to the shortening of pupation and accelerated eclosion. Conversely, heroin treatment led to lengthier pupation. Interestingly, the effects of the drug combination seemed to mirror more precisely those of cocaine.These findings indicate that both cocaine and heroin, singularly and in combination, have sizable effects on blowflies’ development rates, potentially biasing post-mortem interval estimations.     

How frequently are Autosomal and X-STRs multistep mutations perceived as single-step?

Short tandem repeats (STRs) incur in length mutations that involve the loss or gain of repeats. STR mutation rates are usually estimated considering the rates of observed Mendelian incompatibilities in one generation familial configurations. When considering multistep mutations, for the autosomal and X-chromosomal modes of genetic transmission, underestimations are inevitable when using this approach (MIA), due to the occurrence of mutational events deceptively perceived as involving fewer steps. The rate of this occurrence depends on the mode of genetic transmission considered, the parental origin of the mutation, the type of familial configuration considered, and the genotypic background of the progenitor(s). MIA biases were weighted and compared for the diploid and haplodiploid modes of transmission, using familial genotypic configurations (parent(s)-child duos and trios) generated resorting to Python™ and real population databases from Norway, Somalia, and Spain for 10 Aut-STRs and Argentina, Eastern Asia, and Northern Europe for 12 X-STRs. One two- or one three-step mutation was simulated in each of the 1,000,000 familial configurations. The frequency with which mutations could be interpreted as involving fewer steps, when the most parsimonious reasoning is employed, was computed. Results showed that the magnitude and type of biases depend on the type of familial data and the genetic mode of transmission considered, being higher in duos than in trios, both in autosomes and the X chromosome. Indeed, whether X- or Aut-STRs are analyzed, trios generally provide better estimates and should be favored over duos. The pooling of the two types of data is not advised. The greater the number of steps involved in the mutation, the worst the estimates obtained. In X-chromosomal analyzes, trios with a paternal mutation presented the best estimates and mother-daughter duos the worst; mother-son duos showed similar estimates to trios when a maternal mutation was considered.     

Investment sensitivity to interest rates in an uncertain context: is a positive relationship possible?

This paper shows a non-linear relationship between investment and interest rates under uncertainty. Since the interest rate’s variance is positively related to the investment’s value (through the discount factor) and, generally, is also positively related to the interest rate’s level, then, at the same time, a negative (classical) and a positive (through the interest rate’s variance) relationship links interest rates to investment. Hence, an ultimate and even positive relationship between investment and interest rates’ (expected) level may occur. A specific model is proposed and the conditions upon which the positive effect occurs are derived. Some estimates are also proposed.