Major Groups Research Articles

Single Nucleotide Polymorphism (SNP) rs2229569 with L Selectin Gene Expression in Iraqi Female during in vitro Fertilization Program.

يُعرف العقم بأنه أحد مشاكل الصحة الإنجابية الرائدة في مناطق مختلفة من العالم. يعتبر الإخصاب في المختبرأحد أكثر علاجات العقم فعالية. في الدراسة الحالية ، تم تحديد دور جين SELL ، وخاصة تعدد الأشكال rs2229569 ، من حيث الانغراس ومستوى التعبير. اشتملت الدراسة على 67 انثى خضعن لدورة إخصاب في المختبر ، مقسمة إلى مجموعتين رئيسيتين: مجموعة الإناث التي فشلت عملية الزرع ومجموعة الإناث الناجحة في عملية الزرع. تم جمع عينات الدم من مجموعتي الاناث. بعد استخلاص الدنا من الدم وتضخيم الحمض النووي عن طريق تفاعل البلمرة المتسلسل ، تم إرسال العينات لتحليل التسلسل ، وتم تحديد SNP rs2229569 التي اظهرت ثلاثة أنماط وراثية. كانت مجموعة الفشل منحرفه عن H.W.E. ، وكانت مجموعة النجاح في اتفاق مع H.W.E. وفقًا لقيم مربع كاي ((X2 = 11.60 1.58، تشير الفروق المعنوية في مجموعة الفشل إلى تأثير العقم في مجتمع الدراسة. تُظهر نسبة الأرجحية لـ rs2229569 أن أليل T كان (2.09) ، لذلك قد يمثل T allele أليل المخاطرة لعمليةفشل الزرع .أخيرًا ، أظهر جين SELL مستوى تعبيرًا منخفضًا لدى الاناث المصابات بفشل الزرع مقارنة بالاناث في مجموعات الزرع الناجحة.

Daytime Functional Usage Versus Night-Time Wearing: Identifying the Optimal Wearing Regimen for a Custom-Made Orthosis in the Treatment of Trapeziometacarpal Osteoarthritis

ObjectiveTo compare the functional (daytime) use to the nightly use of an orthosis for patients affected by trapeziometacarpal osteoarthritis (OA). DesignRandomized, controlled single-blind trial. SettingThe rheumatology outpatient clinic of the University. ParticipantsSixty participants diagnosed with trapeziometacarpal OA. InterventionsParticipants were randomly assigned into 2 groups: a functional group that used a functional hand-based thumb immobilization orthosis during activities of daily living and a night-time group that used the same orthosis at night. Main Outcomes MeasuresThe patients were evaluated at baseline and after 45, 90, 180, and 360 days considering: pain at the base of the thumb and in the hand, range of motion of the thumb, grip, and pinch strength, manual dexterity, and hand function. ResultsThe groups were homogeneous at the beginning of the trial. No statistically significant difference was observed between groups over time for trapeziometacarpal pain (P=.646). For general hand pain, no statistically significant difference was found between groups over time (P=.594). Although both groups improved from baseline, there were no statistically significant differences between the groups in the vast majority of the assessed parameters. Statistically significant differences between the groups were found only in the following outcomes: thumb palmar abduction of the right hand (P=.023), pick-up test with closed eyes of the right hand (P=.048), and tripod grip strength of the right hand (P=.006). ConclusionsBoth groups showed improvement in pain and function from baseline to the end of the intervention. However, there were no reported differences in these outcomes after a 1-year follow-up between the functional (daytime) and night-time use of orthosis in patients with trapeziometacarpal OA. This suggests that both types of usage can be offered to patients.

What is the folk concept of discrimination? Discriminators and comparators

ABSTRACT According to many theorists, discrimination either requires a better treated comparator or can occur only if the discriminator belongs to a socially salient group different from that of the discriminatee. Both claims are philosophically important since they have important implications for which account of the moral wrongness of discrimination is correct, e.g., if no comparator is required, the wrongness of discrimination cannot result from treating different people as unequals since the unequal treatment of persons is not an essential feature of discrimination. Most theorists who have written on the topic see their account as articulating the folk concept of discrimination. However, none have subjected their putative articulations thereof to experimental testing. This is what the present study does. Its results are mixed, interesting, and call for further studies. Regarding comparativity, surprisingly, respondents are more disposed to classify a situation as discriminatory when there is no comparator than when there is one. Regarding reflexivity, respondents are more likely to classify our vignettes as involving discrimination when the discriminator is from another socially salient group than the discriminatee as to ethnicity but not when it comes to gender. Hence, non-reflexivity does not appear to be a conceptual requirement on discrimination. Remarkably, our study also shows that the mere reference to a majority, outgroup person in our vignettes makes respondents more likely to classify the vignette as involving discrimination against a minority person, even when the majority group person does not play the role of a comparator.

Deconfounded Cross-modal Matching for Content-based Micro-video Background Music Recommendation

Object-oriented micro-video background music recommendation is a complicated task where the matching degree between videos and background music is a major issue. However, music selections in user-generated content (UGC) are prone to selection bias caused by historical preferences of uploaders. Since historical preferences are not fully reliable and may reflect obsolete behaviors, over-reliance on them should be avoided as knowledge and interests dynamically evolve. In this article, we propose a Deconfounded Cross-Modal matching model to mitigate such bias. Specifically, uploaders’ personal preferences of music genres are identified as confounders that spuriously correlate music embeddings and background music selections, causing the learned system to over-recommend music from majority groups. To resolve such confounders, backdoor adjustment is utilized to deconfound the spurious correlation between music embeddings and prediction scores. We further utilize Monte Carlo estimator with batch-level average as the approximations to avoid integrating the entire confounder space calculated by the adjustment. Furthermore, we design a teacher–student network to utilize the matching of music videos, which is professionally generated content (PGC) with specialized matching, to better recommend content-matching background music. The PGC data are modeled by a teacher network to guide the matching of uploader-selected UGC data of student network by Kullback–Leibler–based knowledge transfer. Extensive experiments on the TT-150k-genre dataset demonstrate the effectiveness of the proposed method. The code is publicly available on https://github.com/jing-1/DecCM

Relationships between global orientations and attitudes toward integration policies: A sequential explanatory mixed methods approach.

Based upon a mixed methods follow-up explanation model, the present research examined the relationships between global orientations and the attitudes toward integration policies among both locals (majority group) and South Asians (minority group) in Hong Kong. In Study 1, quantitative data were collected from a community sample of 1,614 adults comprising 1,007 locals and 607 South Asians in three minority groups (Indians, Nepalese, and Pakistanis). In Study 2, a follow-up explanation phase of qualitative investigation was conducted, with 12 in-depth semistructured focus group discussions among seven locals and 49 South Asians, generating three main themes and six subthemes. Quantitative results showed that the positive link between multicultural acquisition and instrumental integration policies was significantly stronger for South Asians than for locals, and that ethnic protection was negatively associated with a positive attitude toward symbolic integration policies in the majority group but had no effects in the minority group. The three main themes generated from the qualitative results include alleviating minority disadvantage, preserving majority privilege, and embracing diversity for the common good. The combined quantitative and qualitative results suggest that the differential relationships of multicultural acquisition and ethnic protection with support for specific integration policies can be understood with the underlying structural power asymmetry between the majority and minority groups. (PsycInfo Database Record (c) 2024 APA, all rights reserved).

Kidney collecting system anatomy applied to endourology - a narrative review.

To evaluate the surgical anatomy of the kidney collecting system through a narrative review of the literature, highlighting its importance during diagnosis and its approach during surgical procedures for the treatment of renal stones. We carried out a review about the anatomy of the kidney collecting system. We analyzed papers published in the past 40 years in the databases Pubmed, Embase and Scielo, and we included only papers in English and excluded case reports, editorials and opinions of specialists. Renal collecting system could be divided in four groups: A1 - kidney midzone (KM), drained by minor calyx that are dependent on the superior or the inferior caliceal groups; A2 - KM drained by crossed calyx, one draining into the superior caliceal group and another draining into the inferior caliceal group; B1 - KM drained by a major caliceal group independent of both the superior and inferior groups; and B2 - KM drained by minor calyx entering directly into the renal pelvis. Some details and anatomic variations of the collecting system are related to clinical and radiological aspects, particularly perpendicular calyces, interpyelocalyx space, position of calyces in relation to renal border, classification of the renal collecting system, infundibular diameter and the angle between the lower infundibulum and renal pelvis. The knowledge of intra-renal collecting system divisions and variations as the angle between the renal pelvis and lower infundibula, position of the calices in relationship with renal edge and the diameter and position of the calyces are important for the planning of minimally invasive renal surgeries.

Human Cytomegalovirus Oncoprotection across Diverse Populations, Tumor Histologies, and Age Groups: The Relevance for Prospective Vaccinal Therapy.

The oncogenicity of the human cytomegalovirus (CMV) is currently being widely debated. Most recently, mounting clinical evidence suggests an anti-cancer effect via CMV-induced T cell-mediated tumor destruction. However, the data were mostly obtained from single-center studies and in vitro experiments. Broad geographic coverage is required to offer a global perspective. Our study examined the correlation between country-specific CMV seroprevalence (across 73 countries) and the age-standardized incidence rate (of 34 invasive tumors). The populations studied were stratified according to decadal age periods as the immunologic effects of CMV seropositivity may depend upon age at initial infection. The International Agency for Research on Cancer of the World Health Organization (IARC WHO) database was used. The multivariate linear regression analysis revealed a worldwide inverse correlation between CMV seroprevalence and the incidences of 62.8% tumors. Notably, this inverse link persists for all cancers combined (Spearman's ρ = -0.732, p < 0.001; β = -0.482, p < 0.001, adjusted R2 = 0.737). An antithetical and significant correlation was also observed in particular age groups for the vast majority of tumors. Our results corroborate the conclusions of previous studies and indicate that this oncopreventive phenomenon holds true on a global scale. It applies to a wide spectrum of cancer histologies, additionally supporting the idea of a common underlying mechanism-CMV-stimulated T cell tumor targeting. Although these results further advance the notion of CMV-based therapies, in-depth investigation of host-virus interactions is still warranted.

Incidence of low anterior resection syndrome and its association with the quality of life in patients with lower rectal tumors.

Low anterior resection syndrome (LARS) causes devastating symptoms and impairs the quality of life (QOL). This study investigated the incidence and risk factors of LARS and their association with the QOL in patients with lower rectal tumors. Patients who underwent anus-preserving surgery for lower rectal tumors between 2014 and 2019 and who had anal defecation between 2020 and 2021 were surveyed. The LARS score measured severity, and the QOL was evaluated using the Japanese version of the Fecal Incontinence Quality-of-Life Scale (JFIQL). The primary endpoint was the incidence of Major LARS, and the secondary endpoints were risk factors and association with the JFIQL. Of 107 eligible patients, 82 (76.6%) completed the LARS survey. The incidence of Major LARS was 48%. Independent risk factors included neoadjuvant chemoradiotherapy (CRT) and a short interval (< 24months after surgery; odds ratio, 4.6; 95% confidence interval: 1.1-19, both). The LARS score was moderately correlated with the JFIQL generic score (correlation coefficient: - 0.54). The JFIQL scores were significantly worse in the Minor and Major LARS groups than in the No LARS group. Major LARS was found in 48% of lower rectal tumors, and independent risk factors include neoadjuvant CRT and a short interval. The QOL was significantly impaired in patients with both Minor and Major LARS.

CyanoStrainChip: A Novel DNA Microarray Tool for High-Throughput Detection of Environmental Cyanobacteria at the Strain Level.

Detecting cyanobacteria in environments is an important concern due to their crucial roles in ecosystems, and they can form blooms with the potential to harm humans and nonhuman entities. However, the most widely used methods for high-throughput detection of environmental cyanobacteria, such as 16S rRNA sequencing, typically provide above-species-level resolution, thereby disregarding intraspecific variation. To address this, we developed a novel DNA microarray tool, termed the CyanoStrainChip, that enables strain-level comprehensive profiling of environmental cyanobacteria. The CyanoStrainChip was designed to target 1277 strains; nearly all major groups of cyanobacteria are included by implementing 43,666 genome-wide, strain-specific probes. It demonstrated strong specificity by in vitro mock community experiments. The high correlation (Pearson's R > 0.97) between probe fluorescence intensities and the corresponding DNA amounts (ranging from 1-100 ng) indicated excellent quantitative capability. Consistent cyanobacterial profiles of field samples were observed by both the CyanoStrainChip and next-generation sequencing methods. Furthermore, CyanoStrainChip analysis of surface water samples in Lake Chaohu uncovered a high intraspecific variation of abundance change within the genus Microcystis between different severity levels of cyanobacterial blooms, highlighting two toxic Microcystis strains that are of critical concern for Lake Chaohu harmful blooms suppression. Overall, these results suggest a potential for CyanoStrainChip as a valuable tool for cyanobacterial ecological research and harmful bloom monitoring to supplement existing techniques.

Widening Disparities in COVID-19 Mortality and Life Expectancy Among 15 Major Racial and Ethnic Groups in the United States, 2020-2021.

Persistent and often widening racial/ethnic and socioeconomic inequalities in health have long existed in the US. Although racial/ethnic disparities in COVID-19 mortality are well documented, COVID-19 mortality risks and resultant reductions in life expectancy during the pandemic for detailed racial and ethnic groups in the US, including Asian and Hispanic subgroups, are not known. We used 2020-2021 US mortality data to estimate age-adjusted COVID-19 mortality rates, life expectancy, and the consequent declines in life expectancy due to COVID-19 overall and for the 15 largest racial/ethnic groups. We used standard life table methodology, cause-elimination life tables, and inequality indices to analyze trends in racial/ethnic disparities. The number of COVID-19 deaths increased from 350,827 in 2020 to 416,890 in 2021. COVID-19 death rates varied 7-fold among the racial/ethnic groups; Japanese and Chinese had the lowest mortality rates and Mexicans and American Indians/Alaska Natives (AIANs) had the highest rates. In 2021, life expectancy ranged from 70.3 years for Blacks and 70.6 years for AIANs to 85.2 years for Japanese and 87.7 years for Chinese. The life-expectancy gap was wide- 22.4 years in 2020 and 23.2 years in 2021. COVID-19 mortality had the greatest impact in reducing the life expectancy of Mexicans (3.53 years in 2020 and 3.78 years in 2021), Central/South Americans (4.86 years in 2020 and 3.50 years in 2021), and AIANs (2.51 years in 2020 and 2.38 years in 2021). Racial/ethnic inequalities in COVID-19 mortality, life expectancy, and resultant reductions in life expectancy during the pandemic widened between 2020 and 2021.

Group‐Based Redistribution in Malaysia: Polarization, Incoherence, Stasis

Group‐based redistribution is extensive and embedded in Malaysia, and has comprehensively transformed the country since the introduction of the New Economic Policy (NEP) in 1971. The NEP established a “two‐pronged” framework of poverty reduction irrespective of race and social restructuring to redress racial inequalities primarily through preferential programmes targeting the disadvantaged Bumiputera majority. The debate surrounding the NEP has under‐appreciated its strengths and augmented its omissions and misconceptions, which in turn have shaped policy discourses and attitudes in two ways. First, there is marked polarization, largely along ethnic lines, with the majority group overwhelmingly predisposed in favour of Bumiputera policy and minority groups generally wary of its continuation. The polarization unduly reduces the debate to monolithic pro‐NEP vs anti‐NEP dispositions, and constricts the solutions to a false binary question of continuing vs terminating the NEP. Second, a broad but incoherent consensus has consolidated around the notion that “need‐based” policies should comprehensively replace “race‐based” policies. While “need‐based” policies are widely embraced, they emphatically do not constitute a substitute for “race‐based” policies, or group‐based redistribution more generally. Surveys have captured the ethnic polarization surrounding “Malay privileges,” but also show that Malaysians unanimously support universal basic assistance. A systematic policy reformulation with universal basic needs and group‐based interventions as enduring and distinct domains might hold out possibilities for new and constructive compromise.

Origin of Oxygen in Graphene Oxide Revealed by 17O and 18O Isotopic Labeling.

Wet-chemical oxidation of graphite in a mixture of sulfuric acid with a strong oxidizer, such as potassium permanganate, leads to the formation of graphene oxide with hydroxyl and epoxide groups as the major functional groups. Nevertheless, the reaction mechanism remains unclear and the source of oxygen is a subject of debate. It could theoretically originate from the oxidizer, water, or sulfuric acid. In this study, we employed 18O and 17O labeled reagents to experimentally elucidate the reaction mechanism and, thus, determine the origin of oxo-functional groups. Our findings reveal the multifaceted roles of sulfuric acid, acting as a dispersion medium, a dehydrating agent for potassium permanganate, and an intercalant. Additionally, it significantly acts as a source of oxygen next to manganese oxides. Through 17O solid-state magic-angle spinning (MAS) NMR experiments, we exclude water as a direct reaction partner during oxygenation. With labeling experiments, we conclude on mechanistic insights, which may be exploited for the synthesis of novel graphene derivatives.

Evaluation of molecular typing methods for some scab-causing Streptomyces strains from Turkey

This study was conducted for identifying phylogenetic relationships between 15 scab-causing Streptomyces species including S. bottropensis, S. europaeiscabiei, S. scabiei, S. stelliscabiei and, other 11 Streptomyces sp. All of the strains were originally isolated from symptomatic potatoes in Erzurum Province, The Eastern Anatolia Region of Turkey. Some morphological and biochemical properties of the strains were defined in our former research. Then, 16 s rRNA regions of them were sequenced. After the sequence data assembly, phylogenetic analyzes were performed. The phylogenetic analyses revealed that the strains are involved in the same major group and, substantially similar to reference strains. Additionally, some subgroup formations were also recorded. Moreover, Repetitive element-based PCR (Rep-PCR), Enterobacterial repetitive intergenic consensus (ERIC-PCR), and BOX-PCR fingerprinting molecular typing methods were used for as molecular typing methods. According to our knowledge, this is the first report on phylogenetic relationships of scab-causing Streptomyces species from Turkey. However, the identification of most pathogenic strains remained at the species level.

Strategic Onboarding: Tailoring Gen Z Transition for Workplace Success

Managers and human resource professionals must possess the requisite abilities of generational awareness to effectively match the distinct attributes exhibited by various age cohorts within the overarching objectives of the firm. Organizational leaders must understand the four major age groups that constitute the workforce: the Traditional Generation, the Baby Boomers, Generation X, Generation Y, also known as the Millennials, and Generation Z. A recent study conducted by McKenzie reveals that several factors, namely financial incentives, career advancement opportunities, flexibility in the workplace, and a sense of purpose at work, have a significant impact on employee retention (The Gen Z Equation, 2023). Schroth (2019) suggests that providing appropriate onboarding procedures would result in increased productivity among the Gen Z cohort in the workplace. This study’s primary focus examines Gen Z’s preferences for leadership styles, perceptions regarding organizational culture, and how these affect Gen Z’s learning approaches. The findings are utilized to generate recommendations and strategies for effectively preparing Generation Z for the workforce by implementing strategic orientation and onboarding practices.

Empowering the religious minority: examining the mobilizing role of social media for online political participation in an Asian democracy

ABSTRACT Most current studies examining the mobilizing or reinforcing role of social media for political participation focus on gender and socioeconomic stratifications and are based in Western democratic societies. Attention to religious status as a form of social stratification concerning social media use for political participation, more so in non-Western settings, is nearly absent. This study, through survey data from India, investigates the roles of political interest, social media news use, and religious status in explaining online political participation gaps. Results show that individuals with higher political interest and frequent social media news use are likelier to engage in online political participation. Next, social media news use can moderate the relationship between political interest and online political participation, exacerbating the participatory gaps between politically interested and disinterested citizens. However, we also find that these relationships are further conditional upon the religious status of the citizens. Specifically, we observe that social media mobilizes politically interested members of religious minorities more than the majority group. The findings reveal the subtleties of the effects of social media on online political participation in a non-Western context. We discuss the theoretical and practical implications of political engagement in the digital age.

The United Nations and Sustainable Peace Enforcement in the Rwandan Genocide

The study examined the rationale behind the conflict between two major ethnic group who shared considerable cultural similarities which would have engendered nation-building but turned out to create around for massive killings termed Rwanda Genocide. It also interrogated the narrow UNAMIR mandate which was limited to monitoring, assisting and investigating crime and violence arising from the Arusha Accord. Descriptive study method was utilized which focused on the character and actions of the personages that were involved in all actions which led to sustain and failed in halting the genocide. The ‘just-war theory was the framework for evaluating the ineptitude of the UNO in halting the Genocide. The practice of Anthroprometry deepened segregation between the ethnic groups. The failure of nation-building escalated by the French colonialist exacerbated. The UNO failed to act as at when due perhaps because Rwanda was not considered of strategic importance to the holder of veto powers at the UNO. It then posited the need for Peace-Enforcement rather than Peacekeeping in every situation where the UN facilitates an Accord. This is because when two or more groups are in conflict or at war, it means peace is absent. It would be a grand deception to pursue ‘peace-keeping’ where nonexisted. Every UNO mission must have its communication radio and interpreters to avoid language problem which complicated the problem in Rwanda. There should be a sociological understanding of the problem they have gone resolve in order to be strategic in their operations by knowing hardliners who are ready to sabotage the mission.

Genetic Diversity and Population Structure of Jujube Cultivars in the United States Revealed by Single Nucleotide Polymorphism Markers

The nutritional and medicinal significance of jujube (Ziziphus jujuba) has led to persistent efforts in genomics to accelerate the utilization of its germplasm resources. However, the absence of accurate genetic identity of existing germplasm limits these studies. In the United States, different names were frequently given to the same jujube cultivars because the pedigrees of the imported germplasm are unclear. The present study selected a panel of 147 single nucleotide polymorphism (SNP) markers distributed across the jujube genome to examine genetic identity, genetic diversity, and population structure in 177 jujube cultivars sampled from different locations in the United States. SNP profile multilocus matching reported a total of 23 synonymous groups including 116 samples that were identical to at least one other sample. This led to the detection of 74 unique genotypes for subsequent diversity analysis. Model-based genetic structure analysis divided the distinctive genotypes into three major groups, with some admixtures among the groups. The genetic differentiation among these groups was further validated by analysis of molecular variance (Fst = 0.199, P value &lt; 0.001), principal coordinate analysis, and clustering analysis. Morphological traits were studied in some of the genetically identical commercial cultivar groups, (i.e., Li, Lang, and Jinsi). Results demonstrated significant morphological differences within genetically identical cultivars in the Jinsi group, indicating phenotypic variation resulting from mutations in these clones.

Testing effects of bottom-up factors, grazing, and competition on New Zealand rocky intertidal algal communities.

Top-down and bottom-up factors and their interaction highlight the interdependence of resources and consumer impacts on food webs and ecosystems. Variation in the strength of upwelling-mediated ecological controls (i.e., light availability and herbivory) between early and late succession stages is less well understood from the standpoint of influencing algal functional group composition. We experimentally tested the effect of light, grazing, and disturbance on rocky intertidal turf-forming algal communities. Studies were conducted on the South Island of New Zealand at Raramai on the east coast (a persistent downwelling region) and Twelve Mile Beach on the west coast (an intermittent upwelling region). Herbivory, light availability, and algal cover were manipulated and percent cover of major macroalgal functional groups and sessile invertebrates were measured monthly from October 2017 to March 2018. By distinguishing between algal functional groups and including different starting conditions in our design, we found that the mosaic-like pattern of bare rock intermingled with diverse turf-forming algae at Twelve Mile Beach was driven by a complex array of species interactions, including grazing, predation, preemptive competition and interference competition, colonization rates, and these interactions were modulated by light availability and other environmental conditions. Raramai results contrasted with those at Twelve Mile Beach in showing stronger effects of grazing and relatively weak effects of other interactions, low colonization rates of invertebrates, and light effects limited to crustose algae. Our study highlights the potential importance of an upwelling-mediated 3-way interaction among herbivory, light availability, and preemption in structuring contrasting low rocky intertidal macroalgal communities.

Attitudes towards immigration and unemployment risk cleavages: Untangling the economically rooted group conflict framework

Abstract How do increasing economic risk cleavages amongst natives shape growing negativity towards immigration? Group conflict theory suggests that tension between immigrant and native groups arises as a reaction to the actual or perceived loss of economic privilege by the majority group members. Yet, such an economically rooted formation of sentiments towards immigration is widely debated. This article aims to clarify and more precisely assess the economic threat mechanisms of inter-group conflict, remedying limitations in earlier work. Distinct from the economic threat effects due to immigration, here, I argue and show that being in a relatively worse-off position amongst natives is a separate channel increasing adverse reactions to immigration. To examine this relationship, I use high-quality longitudinal household panel data Socio-Economic Panel from Germany from 1999 to 2016. Results from the German case provide evidence suggesting that even when controlling for exposure to a higher risk of being substituted by immigrants and a higher risk of being fiscally burdened by foreigners, there is a robust effect of exposure to increasingly higher unemployment risks compared to other native workers in the host society raises adversity towards immigration. This effect is independent of geographic differences and actual exposure to the economic impact of immigrants. Overall, this article reconciles existing accounts of economically motivated group conflict. It brings forward a comprehensive theoretical framework and empirical evidence to the study of worsening reactions towards immigration in these past decades.

Association mapping analysis for cultivated and weedy types of Perilla crop collected from South Korea using morphological characteristics and SSR markers

There are two cultivated and weedy types of Perilla crop (TCWTPC), and they are widely distributed and cultivated in East Asia, especially in South Korea and Japan. The objective of this study is to create simple sequence repeat (SSR) markers linked to morphological traits that show differences between accessions of the TCWTPC using recently designed SSR primer sets in Perilla crop. Genetic diversity within 52 accessions of the TCWTPC, gathered from South Korea, was assessed using 28 novel Perilla SSR primer sets. Based on the assessment, a collection of 28 Perilla SSR primer sets were shown to exhibit polymorphism and yielded a total of 142 alleles across the 52 accessions of the TCWTPC. Through inspection of a phylogenetic tree and population structure, the 52 accessions of the TCWTPC were classified into three major groups. Although most accessions of the TCWTPC were relatively clearly distinguished, SSR markers failed to distinguish several accessions belonging to the two weedy types of the Perilla crop. By using an association mapping analysis (AMA) of the 28 Perilla SSR markers and seven morphological characteristics in the 52 TCWTPC accessions, we detected that three of the Perilla SSR markers (KNUPF134, KNUPF137, KNUPF149) were associated with plant and seed characteristics. The novel SSR primer sets developed in Perilla crop should be useful in AMA for assessing genetic diversity and relationships between and within TCWTPC accessions, and this information will be helpful for genetic mapping in breeding programs for Perilla crop.