While from an instrumental perspective stakeholder relations can promote sustained competitive advantage, normative arguments underscore the importance of morally informed principles, especially when relational strategies have uncertain future outcomes and are prone to imitation. This study investigates how such instrumental and normative views can be complementary based on the case study of Natura, a cosmetics company procuring natural inputs from the Amazon rainforest via supplier relations that are open to multiple parties, including competitors. The research shows that Natura developed and reinforced a morally informed normative core specifying how the company and its managers should act. This resulted in a long-term commitment to the open relational strategy, especially when future outcomes were largely uncertain, which in turn promoted emergent instrumental gains via deepened relational attachments and substantive stakeholder engagement. Importantly, the company’s controlling shareholders strongly influenced the normative core, thus underscoring the importance of identifying key shareholders and their values.

We show that productivity at both the firm and employee (i.e., analyst and inventor) level temporarily declines upon announcements of takeover rumors that do not materialize. Such speculative news may hurt productivity because uncertainty and the threat of job loss cause anxiety, distraction, and reduced commitment among employees and managers. Consistently, we observe a more pronounced productivity dip for rumored targets and when the likelihood of job loss is higher. Firm performance mirrors these results. We find no indication of reverse causality. The evidence fosters our understanding of potential real effects of speculative financial news and the costs of takeover threats.

Twins have been popular figures in many fictional works. A review of two well-known twin-based series, and why they fascinate, is presented. This summary is followed by reviews of twinning in low-income countries, oxytocin administration during twin pregnancies, male-female twins and maternal risk of preeclampsia, and the loss of a twin from the controversial 1960s New York City twin study. The final part of this column covers human interest stories involving twins, specifically a monozygotic quadruplet set conceived naturally, the twins born to Cleopatra and Mark Antony, a star basketball player with a twin brother, a twin stabbed at a track meet, and the revelation of another twin hostage held in Gaza.

Labour mobility has garnered considerable attention within the realm of international relations, prompting economic powers such as New Zealand to seek answers for workforce shortages. Industries dependent on physical labour, often entailing exposure to hazardous substances, face pronounced challenges in attracting workers. In this article, we will focus on three crucial elements of the Hazardous Substances and New Organisms Act 1996: ensuring the protection of the Person Conducting Business Undertaking (PCBU), safeguarding Indigenous iTaukei workers, and preserving the environment under the Recognised Seasonal Employer (RSE) scheme. Employing the 3D veivosaki as a culturally sensitive data collection method, the research strategically gained access to iTaukei workers in the South Island of New Zealand (Central Otago and Oamaru, North Otago) where a recent influx of RSE workers has settled. A total of one hundred iTaukei individuals voluntarily participated in the survey – fifty from each location. The research finds that most of the workers do not understand their rights on their access to protective protection equipment. This report presents a detailed exposition of their responses to the survey.

This article examines the 1964 interim constitutions of Egypt, Iraq, and Syria as markers of a two-decade-long shift in Arab constitutional design—moving from individual liberal rights toward a new regional social contract centered on social rights. The vision of a progressive society rested on two principles of collective welfare: solidarity—expressed through constitutional commitments to collective well-being—and social justice, which aimed to ensure equality and better living standards for all. Contrary to common interpretations, these documents were not simply authoritarian bargains or tools for consolidating power. Rather, the interim constitutions were social bargains that reflected legislative social engineering during decolonization and guided both citizens and the state in building a new society. Despite the intense regional rivalries, these constitutions reflected a shared commitment to socioeconomic transformation that transcended political divides. The analysis of these constitutions shows that the difficulties in their execution extended beyond future limitations of political will or economic resources. Rather, they contained inherent legal and ideological tensions about the structure and direction of the progressive society—particularly in their approach to fundamental questions of social organization. These tensions emerged in the complex relationship between family and individual rights, the delicate balance between private and collective ownership, and the role of state patriarchy in providing social welfare.

This study aimed to establish normal reference ranges of combined cardiac output (CCO) and umbilical venous flow volume (UVFV) in twin fetuses at 20 to 28 weeks of gestation and to evaluate the differences between monochorionic and dichorionic twins. CCO and UVFV were prospectively measured by ultrasound at two centers. The following exclusion criteria were applied: age <18 years or >45 years, first hospital visit at >16 weeks of gestation, monochorionic monoamniotic twin pregnancy, fetal structural or chromosomal abnormality, fetal growth restriction, twin-twin transfusion syndrome, twin anemia polycythemia sequence, and severe hypertension or renal disease were excluded. The period was divided into three groups: 20–22 weeks of gestation, 23–25 weeks of gestation, and 26–28 weeks of gestation. The CCO and UVFV were measured at least once during each period. CCO and UVFV were collected from 274 and 269 fetuses and were measured 412 and 424 times, respectively. UVFV and CCO levels increased as gestation progressed. The weight-corrected UVFV (UVFV/kg) and CCO (CCO/kg) remained stable. UVFV and CCO did not differ between monochorionic and dichorionic twin fetuses. The mean ± SD of UVFV/kg and CCO/kg were determined as 127.8 ± 31.8 and 439.4 ± 80.1 mL/kg/min, respectively. The UVFV-to-CCO ratio also remained stable from 20 to 28 weeks of gestation, ranging from 27.7% to 31.8%. The values and ranges of UVFV/kg and mean CCO/kg in twins were similar to those in singletons.

A simple probabilistic argument shows that every r-uniform hypergraph with m edges contains an r-partite subhypergraph with at least $({r!}/{r^r})m$ edges. The celebrated result of Edwards states that in the case of graphs, that is $r=2$, the resulting bound $m/2$ can be improved to $m/2+\Omega(m^{1/2})$, and this is sharp. We prove that if $r\geq 3$, then there is an r-partite subhypergraph with at least $({r!}/{r^r}) m+m^{3/5-o(1)}$ edges. Moreover, if the hypergraph is linear, this can be improved to $({r!}/{r^r}) m+m^{3/4-o(1)}$, which is tight up to the o(1) term. These improve results of Conlon, Fox, Kwan and Sudakov. Our proof is based on a combination of probabilistic, combinatorial, and linear algebraic techniques, and semidefinite programming.

A key part of our argument is relating the energy $\mathcal{E}(G)$ of a graph G (i.e. the sum of absolute values of eigenvalues of the adjacency matrix) to its maximum cut. We prove that every m edge multigraph G has a cut of size at least $m/2+\Omega({\mathcal{E}(G)}/{\log m})$, which might be of independent interest.

Despite being the most prevalent personality disorder, borderline personality disorder remains a diagnosis with many unanswered questions, particularly concerning pharmacological management. Although many clinical practice guidelines suggest not prescribing medication unless there are significant clinical comorbidities, it is one of the psychiatric diagnoses with the highest rates of polypharmacy. This commentary on a BJPsych Advances article aims to raise clinical questions regarding the voids of knowledge and the appropriateness of medicating and, perhaps, overmedicating in this particular group.

Sesquizygotic twinning (SZT) is one of the rarest events that can occur in multiple pregnancies. It has only been reported twice to date. Studies indicate that sesquizygotic twins result from the splitting of a chimeric embryo at an early stage. Theories and studies suggest that SZT represents a third unique twinning mechanism that is different from dizygotic and monozygotic twinning; however, the unique features of SZT have nothing to do with the twinning mechanism. Instead, it resembles more of an atypical monozygotic twinning form according to the twinning mechanism.

Orbit separation dimension ($\mathrm {OSD}$), previously introduced as amorphic complexity, is a powerful complexity measure for topological dynamical systems with pure-point spectrum. Here, we develop methods and tools for it that allow a systematic application to translation dynamical systems of tiling spaces that are generated by primitive inflation rules. These systems share many nice properties that permit the explicit computation of the $\mathrm {OSD}$, thus providing a rich class of examples with non-trivial $\mathrm {OSD}$.

A 3-year-old girl with a large ductus arteriosus had increased pulmonary vascular resistance at cardiac catheterisation. Test occlusion of the ductus arteriosus with a Nit-Occlud PDA-R device and hyperoxia decreased the pulmonary arterial pressure to < 50% of systemic level. The ductus was closed with the same device. Two years later, an echocardiogram showed normal pulmonary arterial pressure.

This theoretical and empirical study describes and explains the patterns of changes in domestic illicit trade and related transnational illicit flows of goods, services and money during the extreme social crises based on the case of the war in Ukraine. Depending on the legal status of the civil circulation of items, illicit trade is categorized into two groups: illicit (criminal) trade outside the economic sphere; and illicit (illegal) trade within the economic sphere. Typical destructive practices and their peculiarities during the war are considered in each group of illicit trade with the use of quantitative and qualitative methods. In terms of the dichotomy “war as a cause and consequence of crime”, this article addresses significant transformations in established criminal activities outside the official economy, such as drug trafficking and human trafficking, while also highlighting newly emerging crimes, specifically the illegal movement of conscripts across national borders. Furthermore, the article explores illegal trade within the economy, focusing on the trade in excisable goods and the new growing issue of abuse of humanitarian aid. The authors discuss the main deficiencies in adequate counteraction related to both war circumstances and systematic problems of state institutions, in particular, the criminal justice system.

In this work, a compact active integrated antenna based on a highly compatible antenna-in-package (AiP) solution is proposed. It consists of two sections, namely, a cover plate integrated with an antenna and a package backplane that carries a GaN power amplifier (PA) die. The proposed AiP solution not only provides efficient interconnection between the antenna and the GaN PA die while providing physical shielding, but also provides impedance compensation for the die to improve the matching performance. Besides, a plated through hole array is designed inside the package backplane to significantly improve heat dissipation performance. The proposed AiP solution is compatible with radio frequency integrated circuit (RFIC) dies with different pin arrangements. Two prototypes are fabricated and measured for validation. The first prototype is the active integrated antenna based on the GaN PA, which shows an impedance bandwidth of 25.7–28.7 GHz, a peak gain of 31 dBi, and a dimension of 8 mm × 8 mm × 1.7 mm. Another prototype is based on a GaN front-end module (FEM) die integrating the PA and low noise amplifier, which demonstrates better EVM and ACPR than the conventional design with separate antenna and FEM.